Bag filter
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Four sizes, compatible with 01#02#03#04# filter bags ； An adjustable-height stand is available as an option. The main body is made of SS304, SS316, or SS316L. It offers a high flow rate for filtering and excellent efficiency; the filtering capacity of one filter bag is equivalent to that of 5–10 filters of the same type, which helps to **reduce costs** ； It has a wide range of applications and can be used for coarse filtration, medium filtration, or fine filtration. A variety of high-quality stainless steel materials are available, as well as filter containers made from various special materials. Classified by the number of filter bags: there are single-bag, double-bag, and multi-bag types. Classified by the flow pattern of the liquid: there are side-in type and side-in with top injection type. Typical application areas for filtration products: 1. Automotive coating, coatings, and paint industries: filtration of latex paints, electrophoretic paints, pretreatment solutions, topcoats, as well as paint raw materials and solvents. 2. Petrochemical industry: filtration of various solutions used in the production of lubricants and various oils, adhesives, and chemical fibers. 3. Oil and gas industry: Amine sweetening, dehydration solvent filtration, oilfield water injection, completion fluid filtration. 4. Edible oil and soap-making industries: polishing and purification of edible oils, raw materials for soaps, and water filtration. 5. Textile, dyeing and printing, and papermaking industries: filtration of spinning solutions, dyes, fluxes, water, additives, and binders. 6. Food and beverage industry: clarification treatment and CIP water filtration for beer, wine, fruit wine, sake, liquor, yellow rice wine, fruit juices, bottled water, tea beverages, soy milk, syrups, dairy products, food additives, etc. 7. Electronics and electroplating industries: various electroplating solutions and water filtration. 8. Pharmaceutical industry: various pharmaceutical intermediates, pharmaceutical raw materials, solvent filtration. 9. Machining industry: filtration of various cutting fluids, coolants, and cleaning solutions.
I. General safety procedures for automated instruments 1. All automated instruments must be inspected regularly; they may only be used after passing such inspections. During use, it is necessary to frequently check whether the indicators of these instruments are sensitive and whether they are functioning properly. Operation beyond the specified range is strictly prohibited, as is any unauthorized handling by unqualified personnel. 2. Under normal circumstances, working on live electrical equipment is not allowed; if it is necessary to do so, insulating shoes and gloves must be worn, and the operation must be carried out by at least two people. When necessary, approval from the relevant department of the workshop or branch factory is required before proceeding with the operation. 3. Automation instrument technicians should be well-versed in the electrical aspects related to the automation instruments under their responsibility, as well as in safety procedures concerning toxic and hazardous substances. 4. Effective preventive measures. When working with automated instrument pipelines that handle toxic or similar gases, it is necessary to turn on the ventilation system or stand in the upwind direction, wear the required personal protective equipment and tools, and implement a two-person operation system. 5. Operations inside towers, tanks, and other vessels shall be carried out in accordance with the safety regulations for work within such vessels. 6. Equipment not under the management of professionals shall not be started, stopped, or repaired arbitrarily. 7. Before starting work, automation instrument technicians must carefully check whether all the maintenance tools, instruments, automation devices, and equipment in use are in good condition; otherwise, they may not begin working. 8. When servicing automatic instruments, it is necessary to check in advance whether all safety facilities are in good condition; otherwise, the servicing cannot be commenced. 9. When it is necessary to stop the meter or cut off power supply for on-site work, it is essential to contact the operators and obtain their permission before proceeding. 10. When maintaining automated instruments, the residual pressure and materials in the equipment should be removed, water, electricity, gas, and supply sources should be cut off, the temperature should be brought to normal levels, and signs indicating “Under maintenance” should be displayed; where necessary, a dedicated person should be assigned to supervise the process. 11. When using a soldering iron, do not connect wires while it is still powered; power should be supplied only after welding is complete. The use of electric tools that can generate sparks in flammable and explosive areas is strictly prohibited; if such tools must be used, a fire permit must be obtained first. 12. Automated instruments and their electrical equipment must have proper grounding. 13. For any automated instrument or equipment, it should be treated as being powered until it is confirmed that it is not powered. Whenever the wiring at the terminals is not clear, it should be treated as a high-voltage power source. 14. The wires of automated instrumentation, electrical, and lighting equipment shall be free from damage or leakage. 15. The power switch for automated instruments shall not be shared with the switches for lighting or power supply; in explosion-proof areas, explosion-proof switches must be used. 16. For automated instruments and their associated equipment, before powering them on, it is necessary to check whether the power source and voltage level meet the requirements of the instruments. Then, the insulation condition should be inspected, and power can be supplied only after confirming that the wiring is correct and the connections are good. 17. It is strictly prohibited to place conductors and magnetic items on automated instruments and electrical equipment. 18. It is strictly prohibited to touch any terminal of the transformer after it has been powered on. 19. For the automated instruments on site, as well as the intermediate junction boxes and distribution boxes, measures must be taken to protect them from water, moisture, freezing, and corrosion, in order to ensure their safe operation. 20. The casings of electric tools and electrical equipment used must be properly grounded. It is strictly prohibited to use wires without plugs; they should be connected to sockets instead. 21. The voltage of electrical equipment should meet the requirements. If the equipment malfunctions while in use, the power supply should be turned off first before notifying maintenance personnel; unqualified individuals must not touch it arbitrarily. 22. Without the consent of the automation instrument technician at the branch plant, the operating conditions of all automated instruments shall not be altered arbitrarily (such as differential pressure, pressure, or temperature ranges). Once the operating range is changed, it must be reported to the automation instrument technician at the branch plant for record-keeping, and this change must be clearly documented in the technical records. 23. When adjusting automated instruments filled with mercury, it should be done away from areas where people are gathered. Blowing on the mercury or touching it directly with hands is prohibited. A layer of water must cover the surface of mercury; it is strictly forbidden for nitrogen or liquid ammonia to come into contact with mercury in order to prevent corrosion. 24. When working in high-altitude pipelines or areas with flammable and explosive materials, the pressure tapping points or valves should be closed first. Strictly adhere to the safety operating procedures for \"work at heights\" and \"work in hot and explosive environments\". 25. When operating under high-temperature conditions, necessary protective and insulating measures must be installed around the work area to prevent burns or scalds. 26. It is prohibited to place equipment, wires, pipes, etc., around the automation instrument rooms (panels) that may affect the sensitivity of the automation instruments, nor shall chemical substances that produce corrosive gases be stored there. II. Safe operating procedures for the maintenance of automatic instruments
1. Comply with the “General Safety Operating Procedures for Automatic Instruments”. 2. When performing maintenance or troubleshooting, it is necessary to contact the process operators and implement safety measures; close cooperation is required. For critical components and interlock control systems that could cause the plant to stop operating, work must be carried out only after consulting with the workshop and dispatch team. 3. During the maintenance of automated instruments, specialized tool kits and dedicated calibration benches must be used. 4. When dealing with faults in automatic control systems, interlocks must be disabled first; the regulator should be switched from \"automatic\" to \"manual\" mode. However, the regulator should not have its power or gas supply cut off to ensure proper operation in manual mode. 5. If it is determined that the fault originates from the regulator or actuator itself, follow the procedures specified in the previous item: have the operator perform manual operations on site, and then carry out fault resolution. 6. Maintenance personnel must have a clear understanding of the process flow, automatic systems, and the composition and structure of the detection systems, as well as ensure that all terminal numbers match those on the drawings, before proceeding with any repairs. Safety preparations must be made before dealing with faults; the resolution of major faults requires approval from the shift leader or the workshop duty officer, and a plan must be developed before any action can be taken. 7. When performing normal maintenance or accessing the control panel, careful handling is required – handle it gently, push and pull softly, and avoid dropping any wires, plugs, or components of the automated instruments. During normal driving, knocking is strictly prohibited to prevent faults in the operation of interlocks, buttons, or relay contacts. 8. When using a soldering iron, it should be placed on a heat-insulating stand. When not in use, unplug the power cord. Before leaving work, make sure to cut off the power supply to all testing equipment. 9. When disassembling or assembling automated instruments, it is necessary to close the valves of such instruments to release pressure in various pipelines and valves that are under pressure or contain materials. Disassembly and assembly can only be carried out after all pressure has been released. During these operations, work should be done from the side, and all pipelines must be treated as being under pressure when dealing with issues at the site. 10. If an abnormal operation of an automated instrument is detected and the cause has not yet been identified, but the instrument resumes working on its own, the cause must be found before it can be used; otherwise, it should be disabled. If such an instrument poses a threat to production and it cannot be shut down, contact the chief production supervisor. 11. For the maintenance of automated instruments, it is necessary to take measures such as preventing freezing and providing insulation to ensure that these instruments are not damaged by freezing or suffer from excessive heating, which could lead to accidents. 12. When removing items from the electric furnace, it must be done after turning off the power. The voltage for local lighting shall not exceed 36V. 13. The maintenance, disassembly, and inspection of automated instruments on equipment handling flammable, explosive, or toxic media must be carried out by two persons, one of whom acts as a safety supervisor. These tasks should be performed after cleaning or pressure release is complete. When welding is required, the necessary procedures must be followed, and the work must be conducted under the supervision of a supervisor. 14. When working on the steam system, precautions must be taken to avoid burns and overheating of automated instruments; oils and fireworks are strictly prohibited when in contact with oxygen or acetylene or when working in their vicinity. 15. Upon completion of on-site repair and calibration work, the original pipelines must be restored and put back into service. Only after completing the “Safety Maintenance Work Permit” may personnel leave the site. III. Safe Operating Procedures for the Installation of Automated Instruments 1. Comply with the \"General Safety Operating Procedures for Automated Instruments.\" 2. When installing field automation instruments, two people must work together. 3. When removing automated instruments dealing with hazardous media such as dust, toxic, flammable, or explosive substances, construction may only proceed after successful cleaning and displacement have been verified. 4. Strictly enforce the management regulations regarding the use, storage, and custody of flammable and explosive materials. 5. During the installation of automatic instruments, when it is necessary to use mechanical equipment, welding equipment, and pneumatic or electric tools, the relevant safety technical operating procedures for such equipment must be observed. 6. Tighten the foundation bolts immediately after the automated instruments are installed in place to prevent them from toppling over, especially when multiple automated instrument panels are arranged side by side. Fingers must not be placed on the joint. 7. Flammable and explosive materials are strictly prohibited from being stored around electric furnaces, ovens, and other heating equipment. When using an oil bath apparatus, the automatic temperature regulator must be functional and reliable; the heating temperature must not exceed the ignition point of the oil used. The upper cover must not be opened during heating to prevent burns, and two persons must be present when operating it at night. 8. The DC power supply and voltage level used for calibrating automated instruments should be clearly marked. The electrical insulation resistance should not be less than 20 MΩ. The power supply and other wiring must comply with the requirements specified in the automation instrument diagrams; they shall not be altered arbitrarily. If changes are necessary, approval from the competent department of the workshop or branch factory is required. 9. When leaving the work area, the power supply and other relevant energy sources must be turned off. Electrical equipment must not be installed under doors or pipelines to prevent damage to the equipment due to dripping ； 10. It is strictly prohibited to place tools or other items on the panel top and automated instruments. When making a cut with a jigsaw, no one should be near the back of the disc. 11. When working at heights, scaffolding or platforms must be set up; it is not allowed to sit on pipes while drilling holes or sawing them. It is prohibited to make holes in pipes that already contain a medium or are under pressure. 12. When laying the cable, the supports must be stable and able to rotate smoothly, to prevent the cable from coming loose or falling over; the nails in the wooden shafts should be bent or removed. At turns, the operator should stand on the outside to avoid being crushed. 13. Gauge tubes such as single-tube and U-tube gauges should be stored properly to prevent breakage; the mercury surface should be sealed with substances such as water or glycerin to avoid evaporation. 14. Automating mercury-based measuring instruments should be carried out in a dedicated workshop; the workshop must be well-ventilated, containers holding mercury should be tightly sealed, any spilled mercury must be cleaned up promptly, and workwear and masks should be worn during operations. 15. Before commissioning, the automated instruments should be recalibrated and system tests should be conducted, and the signals and interlock devices should undergo power-on testing. 16. After the installation of automated instruments is completed, and upon passing the inspections in accordance with relevant regulations and design requirements, joint commissioning can be carried out. Once all automated instruments and automatic control devices have passed the testing, they must not be used arbitrarily without prior approval. IV. Safe Operating Procedures for Calibrating Automated Instruments 1. Comply with the \"General Safety Operating Procedures for Automated Instruments.\" 2. It is necessary to understand the operating instructions, principles, and performance of the automated instrument being tested before operating it. 3. When using vibration tables, ovens, cryogenic equipment, or other devices for performance tests, the safety and technical operating procedures for such devices must be followed. Concentration is required during the experiment; one must not leave without permission, and should constantly monitor the progress of the experiment while keeping accurate records. 4. When cleaning components of automated instruments using oils or other solvents, ventilation equipment must be turned on, and the use of open flames is strictly prohibited. Attention should be paid to the surrounding environment; operators must not leave the area. Any remaining solvent after use must be properly packaged and stored in accordance with the regulations for handling flammable and explosive materials. 5. It is prohibited to use electric ovens or dryers to heat flammable materials such as oil. A dedicated person should be assigned to manage electric heating equipment. 6. Before verification, the schematic diagram or other relevant materials should be carefully checked according to the wiring diagram; testing may only begin after confirming that everything is correct. 7. Any calibrated automated instrument must be fitted with a certification of successful maintenance, and calibration records must be kept; otherwise, it is prohibited from being used in the field. 8 The removal of automated instruments or field automation instruments that have stopped operating must be recorded in the production workshop to prevent accidents caused by improper operations by workers. 9. When the power supply supplied to automated instruments exceeds the safe voltage level, strict insulation measures must be in place. It is strictly prohibited to insert wires directly into sockets without plugs. 10. When using equipment to test the voltage resistance or vacuum performance of automated instruments, it is necessary to observe carefully. The voltage testing area must have protective partitions or barriers to prevent accidents.
1. Comply with the “General Safety Operating Procedures for Automatic Instruments”. 2. When performing maintenance or troubleshooting, it is necessary to contact the process operators and implement safety measures; close cooperation is required. For critical components and interlock control systems that could cause the plant to stop operating, work must be carried out only after consulting with the workshop and dispatch team. 3. During the maintenance of automated instruments, specialized tool kits and dedicated calibration benches must be used. 4. When dealing with faults in automatic control systems, interlocks must be disabled first; the regulator should be switched from \"automatic\" to \"manual\" mode. However, the regulator should not have its power or gas supply cut off to ensure proper operation in manual mode. 5. If it is determined that the fault originates from the regulator or actuator itself, follow the procedures specified in the previous item: have the operator perform manual operations on site, and then carry out fault resolution. 6. Maintenance personnel must have a clear understanding of the process flow, automatic systems, and the composition and structure of the detection systems, as well as ensure that all terminal numbers match those on the drawings, before proceeding with any repairs. Safety preparations must be made before dealing with faults; the resolution of major faults requires approval from the shift leader or the workshop duty officer, and a plan must be developed before any action can be taken. 7. When performing normal maintenance or accessing the control panel, careful handling is required – handle it gently, push and pull softly, and avoid dropping any wires, plugs, or components of the automated instruments. During normal driving, knocking is strictly prohibited to prevent faults in the operation of interlocks, buttons, or relay contacts. 8. When using a soldering iron, it should be placed on a heat-insulating stand. When not in use, unplug the power cord. Before leaving work, make sure to cut off the power supply to all testing equipment. 9. When disassembling or assembling automated instruments, it is necessary to close the valves of such instruments to release pressure in various pipelines and valves that are under pressure or contain materials. Disassembly and assembly can only be carried out after all pressure has been released. During these operations, work should be done from the side, and all pipelines must be treated as being under pressure when dealing with issues at the site. 10. If an abnormal operation of an automated instrument is detected and the cause has not yet been identified, but the instrument resumes working on its own, the cause must be found before it can be used; otherwise, it should be disabled. If such an instrument poses a threat to production and it cannot be shut down, contact the chief production supervisor. 11. For the maintenance of automated instruments, it is necessary to take measures such as preventing freezing and providing insulation to ensure that these instruments are not damaged by freezing or suffer from excessive heating, which could lead to accidents. 12. When removing items from the electric furnace, it must be done after turning off the power. The voltage for local lighting shall not exceed 36V. 13. The maintenance, disassembly, and inspection of automated instruments on equipment handling flammable, explosive, or toxic media must be carried out by two persons, one of whom acts as a safety supervisor. These tasks should be performed after cleaning or pressure release is complete. When welding is required, the necessary procedures must be followed, and the work must be conducted under the supervision of a supervisor. 14. When working on the steam system, precautions must be taken to avoid burns and overheating of automated instruments; oils and fireworks are strictly prohibited when in contact with oxygen or acetylene or when working in their vicinity. 15. Upon completion of on-site repair and calibration work, the original pipelines must be restored and put back into service. Only after completing the “Safety Maintenance Work Permit” may personnel leave the site. III. Safe Operating Procedures for the Installation of Automated Instruments 1. Comply with the \"General Safety Operating Procedures for Automated Instruments.\" 2. When installing field automation instruments, two people must work together. 3. When removing automated instruments dealing with hazardous media such as dust, toxic, flammable, or explosive substances, construction may only proceed after successful cleaning and displacement have been verified. 4. Strictly enforce the management regulations regarding the use, storage, and custody of flammable and explosive materials. 5. During the installation of automatic instruments, when it is necessary to use mechanical equipment, welding equipment, and pneumatic or electric tools, the relevant safety technical operating procedures for such equipment must be observed. 6. Tighten the foundation bolts immediately after the automated instruments are installed in place to prevent them from toppling over, especially when multiple automated instrument panels are arranged side by side. Fingers must not be placed on the joint. 7. Flammable and explosive materials are strictly prohibited from being stored around electric furnaces, ovens, and other heating equipment. When using an oil bath apparatus, the automatic temperature regulator must be functional and reliable; the heating temperature must not exceed the ignition point of the oil used. The upper cover must not be opened during heating to prevent burns, and two persons must be present when operating it at night. 8. The DC power supply and voltage level used for calibrating automated instruments should be clearly marked. The electrical insulation resistance should not be less than 20 MΩ. The power supply and other wiring must comply with the requirements specified in the automation instrument diagrams; they shall not be altered arbitrarily. If changes are necessary, approval from the competent department of the workshop or branch factory is required. 9. When leaving the work area, the power supply and other relevant energy sources must be turned off. Electrical equipment must not be installed under doors or pipelines to prevent damage to the equipment due to dripping ； 10. It is strictly prohibited to place tools or other items on the panel top and automated instruments. When making a cut with a jigsaw, no one should be near the back of the disc. 11. When working at heights, scaffolding or platforms must be set up; it is not allowed to sit on pipes while drilling holes or sawing them. It is prohibited to make holes in pipes that already contain a medium or are under pressure. 12. When laying the cable, the supports must be stable and able to rotate smoothly, to prevent the cable from coming loose or falling over; the nails in the wooden shafts should be bent or removed. At turns, the operator should stand on the outside to avoid being crushed. 13. Gauge tubes such as single-tube and U-tube gauges should be stored properly to prevent breakage; the mercury surface should be sealed with substances such as water or glycerin to avoid evaporation. 14. Automating mercury-based measuring instruments should be carried out in a dedicated workshop; the workshop must be well-ventilated, containers holding mercury should be tightly sealed, any spilled mercury must be cleaned up promptly, and workwear and masks should be worn during operations. 15. Before commissioning, the automated instruments should be recalibrated and system tests should be conducted, and the signals and interlock devices should undergo power-on testing. 16. After the installation of automated instruments is completed, and upon passing the inspections in accordance with relevant regulations and design requirements, joint commissioning can be carried out. Once all automated instruments and automatic control devices have passed the testing, they must not be used arbitrarily without prior approval. IV. Safe Operating Procedures for Calibrating Automated Instruments 1. Comply with the \"General Safety Operating Procedures for Automated Instruments.\" 2. It is necessary to understand the operating instructions, principles, and performance of the automated instrument being tested before operating it. 3. When using vibration tables, ovens, cryogenic equipment, or other devices for performance tests, the safety and technical operating procedures for such devices must be followed. Concentration is required during the experiment; one must not leave without permission, and should constantly monitor the progress of the experiment while keeping accurate records. 4. When cleaning components of automated instruments using oils or other solvents, ventilation equipment must be turned on, and the use of open flames is strictly prohibited. Attention should be paid to the surrounding environment; operators must not leave the area. Any remaining solvent after use must be properly packaged and stored in accordance with the regulations for handling flammable and explosive materials. 5. It is prohibited to use electric ovens or dryers to heat flammable materials such as oil. A dedicated person should be assigned to manage electric heating equipment. 6. Before verification, the schematic diagram or other relevant materials should be carefully checked according to the wiring diagram; testing may only begin after confirming that everything is correct. 7. Any calibrated automated instrument must be fitted with a certification of successful maintenance, and calibration records must be kept; otherwise, it is prohibited from being used in the field. 8 The removal of automated instruments or field automation instruments that have stopped operating must be recorded in the production workshop to prevent accidents caused by improper operations by workers. 9. When the power supply supplied to automated instruments exceeds the safe voltage level, strict insulation measures must be in place. It is strictly prohibited to insert wires directly into sockets without plugs. 10. When using equipment to test the voltage resistance or vacuum performance of automated instruments, it is necessary to observe carefully. The voltage testing area must have protective partitions or barriers to prevent accidents.