Water pump classification

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1. According to the direction of the pump shaft, it can be divided into: Horizontal, vertical, oblique type 2. Divided according to the shell split type: Radial split type and axial split type 3. Divided according to series: Single stage and multi-stage (multi-stage) 4. Divided according to inhalation form: Single suction and double suction 5. According to the form of water pump, it is divided into: Center supported type, pipeline type, shared seat type, separate seat type, removable type 6. Divided according to driving mode: Direct connection, gear transmission type, hydraulic coupling transmission type, belt transmission type and coaxial type 7. Divided according to special structure: Submersible type, cylinder type, double-walled shell type, pit cylinder type, pull-out type, self-priming type, submersible type and shielded type 8. Divided according to axial force balance method: Balance drum type, balance disc type, self-balancing type and balance hole type 9. They are mainly divided into: Boiler feed water pump, circulating water pump, sewage pump, impurity pump, sand pump, slurry pump, mud pump, sewage pump, clean water pump, fire pump, process pump, booster pump, corrosion-resistant pump, etc. 10. Divided according to different materials: Cast iron pumps, stainless steel pumps, plastic pumps, fluoroplastic pumps, engineering plastic pumps 11. Divided according to structural form: Centrifugal pumps, diaphragm pumps, gear pumps, plunger pumps, reciprocating pumps, vacuum pumps, jet pumps · Centrifugal pumps and centrifugal pump models: Centrifugal pump models, varieties, specifications and their variants are the largest among agricultural pumps. Depending on the way water flows into the impeller, the number of impellers, whether the pump itself can be self-priming, and the size and type of supporting power, centrifugal pumps include single-stage single-suction centrifugal pumps, single-stage double-suction centrifugal pumps, multi-stage centrifugal pumps, self-priming pumps, electric motor pumps, and diesel engine pumps. 1. Single-stage single-suction centrifugal pump. The old pump models include BA and B-type single-stage single-suction centrifugal pumps. In the 1980s, our country carried out upgrading and development work on centrifugal pump products based on international standards and the actual situation of drainage and irrigation machinery, and produced IB type and IQ type (now renamed IS type) single-stage centrifugal pump series products, which have been listed as * * Professional standards and industry standards. In a single-stage single-suction centrifugal pump, water enters the impeller from one side in the axial direction. There is only one impeller, so it is called a single-stage single-suction centrifugal pump. Its characteristics are that compared with mixed flow pumps and axial flow pumps, it has a higher head, smaller flow rate, simple structure and easy use. IQ type (IS type) single-stage single-suction centrifugal pump (also known as light and small centrifugal pump) is designed according to my country's national conditions and to meet the user's requirements for simple structure, light weight, low price, good performance and convenient matching. There are 84 types of products, divided into 3 derivative series and 413 specifications and models. (1) Performance range: The pump diameter is 50 to 200 mm, the flow rate is 12.5 to 400 cubic meters/hour, and the head is 8 to 125 meters. The supporting power includes direct-coupled diesel engine, belt drive, and direct-coupled electric motor. The power is 1.1-110 kilowatts, and the speed is 1450-2900 rpm. (2) Structural type The light and small centrifugal pump is an axial suction single-stage single-suction suspension centrifugal pump. The pump body opens the door at the back, and the outlet is located in the center. The back cover is a press-fit type. The bearing body is directly connected to the pump body. The pump feet are located under the pump body. The bearings are lubricated with butter. The shaft seals are divided into three types: soft packing, mechanical seal, and rubber oil seal. The impellers are all closed type, and the transmission is divided into two types: coupling transmission and belt transmission. Pump impeller steering: Viewed from the direction of the pump inlet, the impeller turns clockwise, and when the pump is directly driven by the diesel engine, it turns counterclockwise. A manual pump can be installed at the pump outlet, and the bottom valve can be removed to reduce hydraulic loss and make the pump self-priming. 2. Double-suction centrifugal pump It is a double-suction centrifugal pump that enters water from both sides of the impeller. Because the pump cover and pump body are assembled with horizontal joints, it is also called a horizontal split centrifugal pump. Compared with single-stage single-suction centrifugal pumps, it has high efficiency, large flow rate and higher head. However, it is large and heavy, and is generally used for fixed operations. It is suitable for medium-sized irrigation areas in hills and plateaus, as well as for factories, mines, urban water supply and drainage, etc. Double-suction centrifugal pumps include S-type, SH-type, SA-type, and SLA-type. The difference between S-type and SH-type is that, viewed from the driving end, the S-type pump rotates clockwise, while the SH-type pump rotates counterclockwise. SLB type is a vertical removable double-suction pump. The performance range of S-type series pumps is 160 to 18,000 cubic meters per hour, head 12 to 125 meters, water inlet diameter 150 to 1,400 millimeters, and rotational speeds of 2950, ​​1450, 970, 730, 585, 485, and 360 rpm. 3. Compared with single-stage pumps, the difference between a multi-stage centrifugal pump and a single-stage pump is that the multi-stage pump has more than two impellers, which can absorb and pressurize water in multiple stages, thereby lifting the water to a very high position. The lift can be increased or decreased according to the number of stages required. Multi-stage pumps are mainly used for mine drainage, urban and factory water supply, and are rarely used for agricultural irrigation. They are only suitable for water lifting in high-lift, small-flow mountainous areas to solve the drinking water problem for humans and animals. Multi-stage high centrifugal pumps are available in vertical and horizontal types. The main models include D-type and DL-type multi-stage centrifugal pumps, and DW-type and DWL-type small multi-stage centrifugal pumps. (1) D-type multi-stage pump performance range flow rate 6.3 ~ 720 cubic meters / hour, head 16 ~ 600 meters, water inlet diameter: 50, 75, 100, 125, 150, 200 mm, among which the 50-125 mm pump type has a high speed of 2950 rpm, and the 150-200 mm pump type has a high speed of 1480 rpm. (2) Structural type D-type multi-stage centrifugal pump is a horizontal multi-stage (2 to 12 stages), the impeller is single-suction, and the pump body is segmented. When the first-stage impeller is double-suction, it is represented by DS. When two speeds are specified at the same time, the low speed is represented by DA. The multi-stage centrifugal pump used for boiler feed water is represented by DG. 4. Self-priming pump A self-priming pump is a single-stage single-suction centrifugal pump that relies on the special structure of the pump itself to produce self-priming. It is called a self-priming centrifugal pump. Compared with ordinary centrifugal pumps, there are significant differences in the structure of the pump body: First, the pump inlet position is raised, and sometimes a suction valve is installed; second, a gas-water separation chamber is set up on the water outlet side. A self-priming pump outside the pump has a self-priming device outside the pump, such as a vortex pump, a water ring vacuum pump, a jet pump, a manual pump, etc. Compared with ordinary centrifugal pumps, self-priming pumps have a compact structure and are simple to use and operate. They not only save the trouble of pouring a large amount of water before starting, but also eliminate the need for a low valve in the water inlet pipe, which reduces the water inlet resistance and increases the water output of the pump. However, the efficiency is 3% to 5% lower than that of ordinary centrifugal pumps of the same specification. Self-priming pumps are mostly used in light and small sprinkler irrigation units and pipeline irrigation units. There are many varieties and specifications of self-priming centrifugal pumps, including ZX type, TC type, BPZ type and ZB type, etc. (1) ZB type performance ranges from flow rate 2 to 200 m3/h, lift from 8 to 100 m, and supporting power from 0.25 to 45 kilowatts. (2) Structural type characteristics: According to the type of the pump's supporting power machine, it is divided into a self-priming pump matching an electric motor and a self-priming pump matching a diesel engine. According to the structure and working characteristics of realizing the self-priming function, it can be divided into internal sliding type, external sliding type, water ring wheel type and other types. The transmission modes include direct transmission (including inner shaft) and belt transmission. The import diameter is 25 to 200 mm, with a total of 10 calibers and 54 specifications. · Centrifugal pump model: There are many models of centrifugal pumps. Here we only introduce some of them. If you want to know the meaning of particularly detailed models, you need to consult the centrifugal pump manufacturer. Let’s first look at the meanings represented by a set of model letters for all pump products. - B: Single-stage single-suction cantilever centrifugal pump. - D: Segmented multi-stage pump. - DG: Segmental multi-stage boiler feed water pump. - DL: Vertical shaft multi-stage pump. - DS: Segmented multi-stage pump with double suction impeller in the first stage. - F: Corrosion resistant pump. - JC: Long shaft deep well pump. - KD: Split case multi-stage pump. - KDS: Split-case multi-stage pump with double-suction impeller in the first stage. - QJ: Submersible pump for well. - QX.: Single phase dry submersible pump. - QS: Water-filled submersible pump. - QY: Oil-filled top-pump submersible pump. - R: Hot water pump. - S: Single-stage double-suction centrifugal pump. - WB: High lift horizontal axis sewage pump. - Y: Hydraulic pump. - YG: Pipeline hydraulic pump. - ZB: Self-priming centrifugal pump. At present, there are 32 types of centrifugal pump product models, namely: ISG pipeline centrifugal pump, ISW horizontal pipeline centrifugal pump, QDLF stainless steel multi-stage centrifugal pump, GC boiler feed water centrifugal pump, DL vertical multi-stage centrifugal pump, GDL multi-stage pipeline centrifugal pump, PBG shielded pipeline centrifugal pump, YG vertical pipeline oil pump, ISWR horizontal hot water pump, ISWH horizontal chemical pump, ISWB horizontal pipeline oil pump, ISG vertical pipeline centrifugal pump Pump, IRG vertical hot water circulation pump, IHG vertical pipeline chemical pump, ISGB removable pipeline centrifugal pump, ISGD low-speed centrifugal pump, ISWD low-speed centrifugal pump, IS single-stage single-suction clean water centrifugal pump, IH single-stage single-suction chemical centrifugal pump, FS horizontal FRP centrifugal pump, S-type FRP centrifugal pump, GBW concentrated sulfuric acid centrifugal pump, FSB type fluoroplastic alloy centrifugal pump, AFB, FB corrosion-resistant centrifugal pump, TSWA horizontal multi-stage centrifugal pump, ZX self-priming centrifugal pump, S, Sh single-stage double-suction centrifugal pump, LG high-rise building water supply multi-stage centrifugal pump, CDLF stainless steel vertical multi-stage centrifugal pump, D multi-stage centrifugal pump, CYZ-A self-priming centrifugal pump, IHF fluoroplastic alloy chemical centrifugal pump. Let’s take the ISG pipeline centrifugal pump as an example to briefly explain the meaning of each part of the centrifugal pump model.: 1. ISG series vertical pipeline centrifugal pumps are divided into six categories: ISG, IRG, GRG, IHG, YG and ISGD. ISG is a single-stage single-suction pipeline centrifugal pump, IRG single-stage single-suction hot water pipeline centrifugal pump, GRG single-stage single-suction high-temperature pipeline centrifugal pump, IHG single-stage single-suction chemical pump, YG single-stage single-suction pipeline centrifugal oil pump, ISGD single-stage single-suction low-speed centrifugal pump. ISG 50 - 160 (I) A (B) ISG represents ISG type vertical single-stage single-suction centrifugal pump. 50 represents the nominal diameter of the pump inlet and outlet, the unit is MM. 160 represents the nominal outer diameter of the impeller, the unit is MM. (I) represents the flow classification. A indicates the first cutting of the impeller. B indicates the second cutting of the impeller. 2. ISGB type detachable vertical pipeline centrifugal pump, ISGB detachable vertical centrifugal pump. ISGB 150 - 50 (I) (A) (B) (C)ISGB is divided into three models, respectively expressed as: ISGB detachable vertical centrifugal pump, IRGB detachable vertical hot water pump, IHGB detachable vertical chemical pump, YGB detachable vertical oil pump. 150 represents the nominal diameter of the inlet and outlet of the pump, in MM. 50 represents the rated head of the centrifugal pump, in M. (I) represents traffic classification. (A) (B) (C) respectively indicate that the impeller has undergone the first cutting, the second cutting, and the third cutting. 　　3. There are five models of horizontal pipeline centrifugal pumps, namely: ISW horizontal centrifugal pump, ISWR horizontal hot water centrifugal pump, ISWH horizontal chemical centrifugal pump, ISWB horizontal explosion-proof centrifugal pump, ISWHB horizontal explosion-proof chemical centrifugal pump. ISW type horizontal pipeline centrifugal pump: ISW 150 - 160 (I) A (B)150 represents the inlet nominal diameter and outlet nominal diameter of the centrifugal pump, in MM. 160 represents the nominal outer diameter of the impeller in MM. (I) represents traffic classification. A (B) indicates that the impeller has undergone the first cutting and the second cutting respectively. · Sewage pump series model meaning: Q: Diving W: Sewage G: Pipeline Y: Under liquid N: Mud Z: Self-priming L: Vertical AS: Tear JY: Stir evenly P: Stainless steel B: Explosion-proof QW (WQ) non-clogging submersible sewage pump example: 80WQ(QW)P40-15-4 80 WQ(QW) P 40 - 15 - 4 │ │ │ │ │ └—-Pump motor (KW) │ │ │ │ └——--Pump lift (m) │ │ │ └————————-Pump flow rate (m3/h) │ │ └————————-Stainless steel material│ └——————————-Submersible sewage pump└————————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) Examples of JYWQ and JPWQ automatic mixing sewage pumps: 80JY (P) WQ50-10-1600-3 80 JY (P) WQ 50 - 10 - 1600 - 3 │ │ │ │ │ │ │ └—Pump motor (KW) │ │ │ │ │ │ └——————Mixing range of the pump (mm) │ │ │ │ └————————Head of the pump (m) │ │ │ │ └——————————Flow rate of the pump (m3/h) │ │ │ └—————————— W: Sewage Q: Diving P: Stainless steel │ │ └————————————-P: Stainless steel material│└——————————————-JY: Stir well└————————————The diameter of the pump represents the nominal diameter of the pump discharge (mm) Example of GW non-clogging pipeline sewage pump: 100GWP(B)100-15-7.5 100 GWP B 100 - 15 - 7.5 │ │ │ │ │ └—-Pump motor (KW) │ │ │ │ └——--Pump lift (m) │ │ │ └——————-Pump flow rate (m3/h) │ │ └————————-Explosion-proof motor│ └————————————-G: Pipe type W: Sewage pump P: Stainless steel└————————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) LW (WL) non-clogging vertical sewage pump example: 100LW(WL)PB100-15-7.5 100 LW(WL) PB 100 - 15 - 7.5 │ │ ││ │ │ └—Pump motor (KW) │ │ ││ │ └—--Pump lift (m) │ │ ││ └——————-Pump flow rate (m3/h) │ │ │└——————Explosion-proof motor│ │ └————————Stainless steel│ └————————————L: Upright W: Sewage discharge└————————————————-The nominal diameter of the pump discharge is the diameter (mm) YW non-clogging liquid submersible sewage pump example: 100GWP(B)100-15-7.5 100 GWP B 100 - 15 - 7.5 │ │ │ │ │ └——Pump motor (KW) │ │ │ │ └————Pump lift (m) │ │ │ └————————Pump flow rate (m3/h) │ │ └——————————Explosion-proof motor│ └——————————-G: Pipe type W: Sewage pump P: Stainless steel└————————————The diameter of the pump represents the nominal diameter of the pump discharge (mm) Example of ZW non-clogging self-priming sewage pump: 100ZW15-30PB 100 ZW 15 - 30 PB │ │ │ ││└————Pump motor (KW) │ │ │ │└————Stainless steel material│ │ │ └——————Pump head (m) │ │ └——————————Pump flow rate (m3/h) │ └——————————(non-clogging self-priming sewage pump) Z: self-priming W: sewage └————————————The diameter of the pump represents the nominal diameter of the pump discharge (mm) AS cutting type submersible sewage pump example: AS10-2WCB AS 10 - 2 W CB │ │ │ │└————Anti-blocking and tearing mechanism│ │ │ └——————Voltage is 220V │ │ └——————————Motor series│ └——————————-Power P2 * 100 └————————————Example of single blade impeller NL type vertical sewage slurry pump: NL76A-9 NL (CFW)76 A - 9 ││ │││ │ │ └——Pump head (m) ││ │││ │ └————Mechanical seal││ │││ └——————-Outlet diameter (mm) ││ ││└————————Horizontal ││ │└————————Stainless steel ││ └——————————Extended type │└————————————Vertical └————————————- Mud pump WQK/QG series sewage pump with cutting device example: WQK20-20QG WQK (X, D) 20 - 20 QG ││││ │ │ │ └—With cutting device││││ │ │ └—--Pump lift (m) ││││ │ └——————Pump flow rate (m3/h) ││││ └——————Single channel impeller││┈└————————Vortex impeller││└——————————Open impeller│└————————————Submersible└——————————————Sewage · Pipeline pump model meaning: ISG series vertical pipeline centrifugal pump example: ISG50-160(I)A ISG 50 - 160 (I) A(B) │ │ │ │ └—The impeller is cut for the first time│ │ │ └—--Flow classification, (I) is large flow, │ │ └—————— Impeller nominal outer diameter (mm) │ └————————Pump diameter (mm) │ ┌ ISG type vertical centrifugal pump └————————┼ IRG type vertical hot water pump ├ IHG type vertical stainless steel chemical pump └ YG type vertical explosion-proof oil pump ISGD series low-speed vertical pipeline centrifugal pump example: ISGD80-160(I)A ISGD 80 - 160 (I) A(B) │ │ │ │ └—The impeller is cut for the first time│ │ │ └—-——Flow classification, (I) is large flow, │ │ └——————Impeller nominal outer diameter (mm) │ └————————Pump diameter (mm) │ ┌ ISGD type low-speed vertical centrifugal pump └————————┼ IRGD type low-speed vertical hot water pump ├ IHGD type low-speed vertical stainless steel chemical pump └ YGD type low-speed vertical explosion-proof oil pump IGSB series removable pipeline centrifugal pump example: ISGB50-160(I)A ISGB 50 - 160 (I) AB │ │ │ │ │└—The impeller is cut for the first time│ │ │ │ └——Flow classification, (I) is large flow, │ │ │ └—————— Impeller nominal outer diameter (mm) │ │ └——————Pump diameter (mm) │ └———————— │ ┌ ISGD type low-speed vertical centrifugal pump └————————┼ IRGD type low-speed vertical hot water pump ├ IHGD type low-speed vertical stainless steel chemical pump └ YGD type low-speed vertical explosion-proof oil pump ISW series horizontal pipeline centrifugal pump example: ISW65-160(I)A ISW 65 - 160 (I) A(B) │ │ │ │ └—The impeller is cut for the first time│ │ │ └—--Flow classification, (I) is large flow, │ │ └—————— Impeller nominal outer diameter (mm) │ └————————Pump diameter (mm) │ ┌ ISW type horizontal pipeline centrifugal pump └————————┼ ISWR type horizontal pipeline hot water centrifugal pump └ ISWH type horizontal stainless steel pipeline centrifugal chemical pump SG series pipeline pump example: 50SG15-30 50 SG 15 - 30 │ │ │ └—The impeller is cut for the first time│ │ └—-——Flow classification, (I) is large flow, │ └————┬SG type pipeline centrifugal pump│ └SGR type hot water pipeline centrifugal pump└-——————Pump caliber SPG series pipeline canned pump example: SPG80-200(I)A SPG (R) 80 - 200 (I) A (B) (C) │ │ │ │ │ │ │ └—-The impeller has been cut for the third time│ │ │ │ │ │ └—--The impeller has been cut for the second time│ │ │ │ │ └——————The impeller is cut for the first time│ │ │ └ ————————Flow classification│ │ │ └————————Impeller nominal outer diameter (mm) │ │ └————————————Pump inlet and outlet nominal diameter (mm) │ └————————————┬Fluid category (no injection for ordinary, R for hot water) │ └T for corrosive fluids, B for explosion-proof └————————————————-Shielded pipeline centrifugal pump·Fire pump model meaning: XBD series fire pump example: XBD10.4/5-50LG │ │ │ │ │ └┼ISG vertical single-stage single-suction fire pump│ │ │ │ │ │TSWA horizontal multi-stage fire pump│ │ │ │ │ │ISW horizontal single-stage single-suction fire pump│ │ │ │ │ └GDL vertical multi-stage pipeline fire pump│ │ │ │ └——-Pump diameter (mm) │ │ │ └————Flow rate (L/s) │ │ └——————Fire pump pressure (head (50m)) │ └——————————Electric└——————————Fire pump·Magnetic drive centrifugal pump model meaning: CQ series magnetic drive centrifugal pump example: 32CQ-15 32 CQ - 15 │ │ └—Lift│ └—-——Magnetic force transmission centrifugal pump└————Inlet diameter (mm) CQF series magnetic transmission centrifugal pump example: 32CQF-15 32 CQ F - 15 │ ││ └—Lift (m) │ │└—-——Current parts are made of plastic │ └————-Magnetic force transmission centrifugal pump└——————Inlet diameter (mm) Example of CQB series magnetic transmission centrifugal pump: CQB50-32-160 CQ B 50 - 32 - 160 │ │ │ │ └—Impeller nominal diameter│ │ │ └—--Pump outlet diameter│ │ └——————-Pump inlet diameter│ └————————Current parts are made of stainless steel└————————Magnetic drive centrifugal pump CQB-F series magnetic drive centrifugal pump example: CQB50-32-160F CQB 50 - 32 - 160 F │ │ │ │ └—Fluoroplastic (F46) lining│ │ │ └——-Impeller nominal diameter│ │ └——————-Pump outlet diameter│ └————————Pump inlet diameter└————————Magnetic drive centrifugal pump ZCQ series self-priming magnetic drive centrifugal pump example: ZCQ50-40-145 Z CQ 50 - 40 - 145 │ │ │ │ └—Impeller diameter (mm) │ │ │ └————Outlet diameter (mm) │ │ └——————Inlet diameter (mm) │ └——————————Magnetic drive centrifugal pump└——————————Self-priming multi-stage centrifugal pump series model meaning DL, DLR series vertical multi-stage centrifugal pump examples: 100DDLR100-20×4 100 D DL R 100 - 20 × 4 │ │ ││ │ │ └—-Number of pump stages│ │ ││ │ └————Single-stage impeller lift (m) │ │ ││ └————————Flow rate (m3/h) │ │ └————————-Hot water│ └——————————-Vertical multi-stage│ └——————————Multiple outlets└——————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) Example of TSWA series horizontal multi-stage centrifugal pump: 50TSWA×5 50TSWA×5 │││││ └——————Pump stages│┈┈┈└————————-New generation product│┈┈└——————————Transport low-temperature media similar to clean water│┈└——————————Single suction impeller│└——————————-Turbine type└————————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) Examples of LG and LGB series removable multi-stage centrifugal pumps for water supply in high-rise buildings: 100LG-B(R)72-20×6 100 LG-B (R) 72 - 20 × 6 │ │ │ │ │ └—Number of pump stages│ │ │ │ └————-New generation product│ │ │ └————————-Transport low-temperature media similar to clean water│ └————————-Single suction impeller│ └——————————-Turbine type└——————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) Example of GDL series removable pipeline multi-stage centrifugal pump: 50GDL18-15×5 50 GDL 18 - 15 × 5 │ │ │ │ └—Number of pump stages│ │ │ └———-Single-stage head at design point 15(mm) │ │ └——————-Design point flow rate 18 (m3/h) │ └————————GDL removable pipeline multi-stage centrifugal pump└——————————-The diameter of the pump represents the nominal diameter of the pump discharge (mm) GC type water pump is a horizontal single-suction multi-stage centrifugal pump example: 21/2GC-6×5 21/2 GC - 6 × 5 │ │ │ └-The number of impellers or stages│ │ └————Reduced to 1/10 the specific speed of the pump, that is, the specific speed is 60 │ └——————Boiler feed water pump└————————The suction inlet diameter (mm) is divided by 25 and the value is rounded up CDLF series light stainless steel vertical multi-stage centrifugal pump Example: CDLF4-160 CDL F 4 - 160 │ │ │ └-160-stage * 10 | │ └-Number of impellers│ └——————Single suction lift (m) │ └——————Single suction multi-stage segmented centrifugal pump└————————-Suction inlet diameter