SQ series fully automatic filtration devices

Thread Content

Working principle: Tap water enters the filter through a distribution tank and is filtered from top to bottom. As the filter media continuously traps the suspended solids in the incoming water, the head loss across the filter media gradually increases, causing siphonic rise and an increase in the water level in the pipe. When the water level rises and enters the ejector within the siphon assist pipe, the hydraulic force carries away the air inside the siphon tube, creating a negative pressure. When the negative pressure reaches the designed value, siphoning occurs, and at this point the water in the tank is flushed from bottom to top to be \"renewed\". Due to the continuous backwashing of the filter layer, when the water level in the tank drops to the specified value, the siphon effect is disrupted, the backwashing comes to an end, and the filtration unit resumes its operation. Features: 1. This device is one of the first in China to eliminate the need for valves (only inlet, outlet, water inlet, and vent valves are used), as well as control instruments. It makes use of the siphon principle to achieve automatic operation. Compared with traditional filtering equipment, it offers advantages such as no need for manual operation, no energy consumption, low operating costs, safety and reliability, and easy management ； 　　2. This device does not have a backwash water pump or water tower outside the system; there is no need for control valves or corresponding electrical control equipment for water intake, water output, backwashing, or waste discharge. This eliminates the need for specialized personnel to operate and maintain the system, resulting in low operating costs. 3. It saves raw water, achieves high water production rates, with a water utilization rate of ≥97% ； 　　4. No backflow prevention device is provided, and the operating head pressure is low (0.06 MPa) ； 　　5. It has a simple structure, requires no additional supporting facilities, is smaller in size compared to valveless filters, thus occupying less floor space. No special manufacturing facilities are needed, which saves on capital investment as well as costs related to auxiliary facilities and installation. 　　6. Integrated design of the equipment: the water storage tank, filter, U-shaped inlet pipe, siphon pipe, drainage tank, etc., are all built-in, giving it an aesthetically pleasing appearance compared to valveless filters and a compact structure. Users only need to prepare the appropriate foundation for the equipment and connect the inlet and outlet pipes before it can be put into use. 　　7. The equipment is made of carbon steel (or as per the customer’s requirements), features excellent corrosion resistance, high manufacturing precision, and is easy to install. The SQ series of fully automatic filtration devices are primarily used to remove particulate impurities, suspended solids, and other solid substances from water, as well as those substances that can cause adsorption and precipitation. They enable the production of industrial and domestic water suitable for various applications. 　　1. Used for the secondary filtration treatment of circulating cooling water in industries such as petroleum, chemicals, metallurgy, power generation, refining, light industry, and textiles ； 　　2. Used for surface water purification, and for removing iron and manganese from groundwater ； 　　3. Used for filtration in urban and rural water treatment plants ； 　　4. Pretreatment for softening and desalination ； 　　5. Used for the purification of swimming pools and fountain landscapes ； 　　6. Used for removing suspended solids from wastewater; subsequent filtration after biochemical treatment and secondary sedimentation of organic wastewater ； Technical specifications
Model | Flow rate (m³/h) | Operating pressure (Mpa) | Applicable water temperature (°C)
---|---|---|---
Domestic wastewater softening and desalination | Swimming pools and water features | Recirculating cooling and reclaimed water systems | Industrial water supply
T/h | T/h | Turbidity before filtration (mg/l) | Turbidity after filtration (mg/l)
| | Turbidity before filtration (mg/l) | Turbidity after filtration (mg/l)
| | Turbidity before filtration (mg/l) | Turbidity after filtration (mg/l)
| | Turbidity before filtration (mg/l) | Turbidity after filtration (mg/l)
SQ10–1000 | 10–1000 | 7.5–700 | 0.1–0.3
10–50 | ≤80 | ≤10 | ≤50
≤5–10 | ≤50 | ≤5–10 | ≤20
≤3–5

SQ-10–100T/h Fully Automatic Filtration Unit
Schematic diagram of the equipment: http://www.lssg.com.cn/images/jsjs/sqxlqzdglzzjt.gif

Selection parameter table for SQ-10–100T/h fully automatic filtration units
Model | Domestic water supply flow rate (m³/h) | Industrial water supply flow rate (m³/h)
Φ | HH1 | H2 | H3 | H4 | Dg1 | Dg2 | Dg3 | Dg4 | Dg5 | Dg6 | Self-weight (kg) | Total weight (kg)
SQ-10 | 7.5 | 10 | 120 | 0 | 410 | 0 | 255 | 0 | 195 | 0 | 280 | 0 | 450 | 0 | 658 | 0 | 1255 | 0 | 195 | 0 | 6900
SQ-15 | 10 | 15 | 140 | 0 | 420 | 0 | 255 | 0 | 200 | 0 | 285 | 0 | 450 | 0 | 808 | 0 | 150 | 0 | 220 | 0 | 8400
SQ-20 | 15 | 20 | 160 | 0 | 425 | 0 | 260 | 0 | 210 | 0 | 290 | 0 | 400 | 0 | 100 | 0 | 150 | 0 | 165 | 0 | 10300
SQ-25 | 18 | 25 | 180 | 0 | 435 | 0 | 265 | 0 | 215 | 0 | 295 | 0 | 400 | 0 | 125 | 0 | 185 | 0 | 254 | 0 | 13800
SQ-30 | 22 | 30 | 200 | 0 | 445 | 0 | 270 | 0 | 225 | 0 | 310 | 0 | 450 | 0 | 150 | 0 | 200 | 0 | 208 | 0 | 17500
SQ-50 | 40 | 50 | 260 | 0 | 485 | 0 | 280 | 0 | 240 | 0 | 350 | 0 | 450 | 0 | 150 | 0 | 200 | 0 | 208 | 0 | 28000
SQ-70 | 70 | 70 | 300 | 0 | 500 | 0 | 290 | 0 | 260 | 0 | 365 | 0 | 200 | 0 | 450 | 0 | 200 | 0 | 250 | 0 | 36500
SQ-100 | 70 | 100 | 360 | 0 | 520 | 0 | 300 | 0 | 275 | 0 | 380 | 0 | 450 | 0 | 200 | 0 | 300 | 0 | 120 | 0 | 49580

Pipe connection table for SQ-10–100T/h fully automatic filtration units
Symbol | Name | Purpose | Connection
A | Outlet pipe | Water outlet flange |
B | Manhole | Installation and maintenance |
C | Vent hole | Air venting |
D | Drain pipe | Drainage and emptying flange |
E | Inlet pipe | Water inlet flange |
F | Emptying pipe | Maintenance and emptying flange |

Foundation diagram for SQ-10–100T/h fully automatic filtration units: http://www.lssg.com.cn/images/jsjs/sqxlqzdglzzjct.gif

Foundation design parameter table for SQ-10–100T/h fully automatic filtration units
Model | Φ1 | A | a | HH1 | h | bb1 | bb2 | bb3 | L | Reinforcement steel | Remarks
SQ-10 | 95 | 0 | 50 | 0 | 300 | 600 | - | 800 | 200 | 200 | 220 | 35 | 150 | 110 | 103 | 0 | 4 | Φ12
SQ-15 | 115 | 0 | 55 | 0 | 300 | 600 | - | 800 | 200 | 200 | 220 | 35 | 150 | 110 | 103 | 0 | 4 | Φ12
SQ-20 | 135 | 0 | 65 | 0 | 350 | 600 | - | 800 | 200 | 250 | 280 | 40 | 200 | 140 | 123 | 0 | 4 | Φ12
SQ-25 | 155 | 0 | 70 | 0 | 350 | 600 | - | 800 | 200 | 250 | 280 | 40 | 200 | 140 | 123 | 0 | 4 | Φ14
SQ-30 | 175 | 0 | 85 | 0 | 400 | 600 | - | 800 | 250 | 300 | 300 | 40 | 220 | 150 | 123 | 0 | 4 | Φ14
SQ-50 | 235 | 0 | 100 | 0 | 450 | 800 | - | 1000 | 250 | 300 | 360 | 40 | 140 | 180 | 123 | 0 | 9 | Φ12 (Reinforcement required for foundation)
SQ-70 | 275 | 0 | 110 | 0 | 450 | 800 | - | 1000 | 300 | 300 | 420 | 40 | 170 | 210 | 143 | 0 | 9 | Φ14 (Reinforcement required for foundation)
SQ-100 | 335 | 0 | 140 | 0 | 500 | 800 | - | 1000 | 350 | 300 | 420 | 45 | 180 | 225 | 143 | 0 | 9 | Φ14 (Reinforcement required for foundation)

http://www.lssg.com.cn/images/jsjs/sqxlqzdglzzcsb.gif
Symbol | Name | Purpose | Connection
a | Outlet pipe | Water outlet flange |
b | Vent hole | Air venting |
c | Manhole | Installation and maintenance |
d | Inlet pipe | Water inlet flange |
e | Drain pipe | Drainage and water outlet flange |
f | Filter media discharge port | Flange for discharging filter media during maintenance |
h | Emptying pipe | Maintenance and emptying flange |

Note: Models above SQ-400T/h are modular types; specific dimensions and layout plans can be obtained from our factory upon request based on application requirements ； Operation Instructions: 1. Before the initial backwashing of the filter, close the control valves for the outlet pipe and the vent pipe, then open the inlet valve and adjust it to the desired water inflow rate ； Perform a trial run by carrying out forced backwashing 3 to 6 times (the outlet valve can be opened again once the water quality from the discharge pipe is similar to that of the incoming water). 　　2. During the initial operation of the filter, it is necessary to regularly check whether the quality of the water flowing out meets the required standards. If the turbidity of the output water is not within the specified limits, it is necessary to check whether the filter media has been lost or contaminated. If there is a loss of filter media, the top layer should be replenished to the designed thickness (approximately 100 millimeters), or new filter media should be installed. Instructions for Equipment Installation and Maintenance 　　1. The construction level of the equipment foundation is required to be accurate; level checking should be carried out again once the equipment is in place to ensure stable installation. The equipment is welded to the pre-installed steel plates in the foundation. 　　2. The flange connections and threaded connections of the siphon system must be leak-free, and strict attention must be paid to the control elevation at the top of the siphon auxiliary pipe. 　　3. In addition to applying special anti-corrosion treatment to the interior of the equipment, the outer surface of the equipment should also be treated against corrosion after it has been installed; the color of this external anti-corrosion coating can be chosen by the user. 　　4. Filter media replacement: The filter media generally do not need to be replaced; the minimum service life of these media is 5 to 8 years. During this period, it is sufficient to add additional material to the upper layer as needed, depending on the quality of the water output. Amount of single-layer filter media: Model, Quartz sand particle size, Gravel cushion particle size – 0.5–1.0 mm, 2–4 mm, 4–8 mm, 8–16 mm. SQ-10: 1.2, 0.13, 0.13, 0.17; SQ-15: 1.8, 0.17, 0.17, 0.23; SQ-20: 2.2, 0.24, 0.24, 0.35; SQ-25: 2.9, 0.29, 0.29, 0.38; SQ-30: 3.6, 0.36, 0.36, 0.48; SQ-50: 6.5, 0.61, 0.61, 0.81; SQ-70: 9.0, 0.81, 0.81, 1.1; SQ-100: 12.4, 1.10, 1.10, 1.60; SQ-200: 24.5, 2.15, 2.15, 3.10; SQ-300: 36.8, 3.33, 3.34, 4.7; SQ-400: 49.0, 4.34, 4.36, 6.2; SQ-500: 62.5, 5.58, 8.0; SQ-800: 98.0, 8.6, 8.6, 12.4; SQ-1000: 124, 11, 11, 16. Note: The figures in the table represent the calculated weight; when placing an order, an additional 5–10% should be added to account for consumption. Technical requirements for filter media: The filter media must comply with the standards specified in GJ24.1-88 issued by the Ministry of Construction. 　　1. The sum of the crushing rate and wear rate of quartz sand filter media should not exceed 1.5%, and its density should not be less than 2.55 g/cm3 ； 　　2. The quartz sand filter media should be free of visible soil, mica, and organic impurities, and the water extract of the filter media should not contain any toxic substances. The silt content should not exceed 1%, and the content of light materials with a density of less than 2 g/cm3 should not be more than 0.2% ； 　　3. The loss on ignition of the quartz filter media should not be greater than 0.7%, and its solubility in hydrochloric acid should not be greater than 3.5% ； 　　4. The effective particle size and coefficient of variation of the quartz filter media are determined by the user; alternatively, conditions can be specified for supply by our factory. Methods for laying the filter media and backing material: 1. After the filter is installed, remove all debris first, then draw horizontal lines on the inner wall of the filter at the desired heights for each layer of backing material and filter media, using these as markers for the laying height. Carefully inspect the backing materials of different particle size ranges, and clean them in descending order of particle size for use in paving. 　　2. When working on the materials, one should stand or walk on the lowest layer of supporting material; it is advisable to work on wooden planks. The upper layer can be laid only after the lines on the lower layer have been completed. The thickness of each layer of backing material should be accurate and uniform, leveled using a scraper. The height should align with the horizontal line of the paving height. 　　3. After all the backing materials have been laid in layers, the filter material is then laid. The laying height of the filter media layer should also be level with the top surface of the filter media layer, and it should be leveled using a scraper. Technical requirements for gravel backing material: 1. Most of the particles in the gravel should be nearly spherical in shape ； 　　2. The gravel backing material shall be free of visible soil, shale, and organic impurities. The water leachate of the backing material should not contain toxic substances. The mud content should not exceed 1%, and the solubility in hydrochloric acid should not be greater than 5% ； Scope of the complete set supply: Serial number, Name, Unit quantity, Remarks: 1. Water inlet distribution box – 1 piece; 2. U-shaped water inlet pipes – 4 pieces; 3. Filters – 1 piece, including a flushing tank and connecting pipes – 4 pieces; 4. Siphon pipes – 4 pieces, including siphon auxiliary pipes and a drainage tank – 5 pieces; 5. Filter fixing accessories – 1 set; 6. Connection flanges and manhole covers – 1 set; 7. Accessories included in the package – 1 set, including bolts, nuts, and gaskets required for the equipment