What is the production standard of domestic chemical pumps?

GB T 5675-2010 "Centrifugal Pump Classification": This standard divides centrifugal pumps into a series of classifications, including classification methods such as use, structure, and working principle.

GB T 5656-2013 "Centrifugal Pump Performance Test Regulations": This standard specifies the methods and requirements for centrifugal pump performance testing, including the test methods for flow, head, efficiency and other parameters.

JB T 8092-2014 "General Technical Conditions for Chemical Centrifugal Pumps": This standard stipulates the general technical requirements for chemical centrifugal pumps, including requirements for structure, material, performance, etc.

In addition, there may be industry or corporate standards for chemical pumps for specific applications. These standards are usually formulated by national standardization bodies, industry associations or enterprises themselves to ensure that the design, manufacture and use of chemical pumps meet the corresponding requirements, and ensure safety, reliability and performance stability. Specific standards and specifications vary depending on the type of chemical pump and the field of application.

There are generally two types of chemical pumps commonly used: centrifugal pumps and reciprocating pumps. There are others:

Gear pumps, piston pumps, reciprocating pumps, diaphragm pumps, impeller pumps, pipeline pumps, jet pumps, vacuum pumps and so on. Chemical centrifugal pumps and diaphragm pumps are common chemical pumps at present. Centrifugal pumps (types of centrifugal pumps commonly used in chemical industry) According to the nature of the transported liquid, the centrifugal pumps commonly used in chemical production mainly include water pumps, corrosion-resistant pumps, oil pumps, submerged pumps, impurity pumps, and canned pumps.

Chemical pump range of use:

1.Chemical pumps are suitable for pumping corrosive liquids from bottles, drums, cylinders, pools or other containers.

2.The chemical pump has the advantages of stable and reliable performance, good sealing performance, beautiful appearance, easy use and maintenance. It plays a great role in improving product quality, reducing running, running, dripping and leakage to prevent pollution and improve the environment.

3.The chemical pump is suitable for chemical, petroleum, metallurgy, power station, food, pharmaceutical, synthetic fiber and other departments to transport various corrosive media or media with high physical and chemical properties.

4.Chemical pump products mainly include: various glass fiber chemical pumps, corrosion-resistant plastic pumps, high-temperature chemical pumps, standard chemical process pumps, magnetic drive pumps, chemical pumps, etc.

Chemical pumps are used to pump clean water, which contain abrasive, harmful substances to ordinary pump body materials, suspended, corrosive to stainless steel materials, and non-awesome substances.

Commonly used pumps in chemical industry include corrosion-resistant pumps, oil pumps, impurity pumps, submerged pumps, shielded pumps, etc.

1. Corrosion-resistant pump: As the name suggests, the corrosion-resistant pump is a pump with corrosion-resistant performance, which is mainly used for the transportation of corrosive liquids. It is a widely used pump in general-purpose equipment pumps.

2. Oil pump: The oil pump is a kind of pump that is both light and compact, and there are three categories: in-line, distribution and monolithic. The oil pump needs a power source to operate, and the camshaft at the lower part of it is driven by the engine crankshaft gear.

3. Impurity pump: The transmission mode of the pump is connected with the motor through the elastic coupling components. From the direction of the motor, the pump rotates in a clockwise direction.

4. Submerged pump: Submerged pump is a positive pressure conveying vertical pump, which can effectively solve the problems of gas resistance and cavitation. The explosion-proof level of the conveyed material determines that the submerged pump products have different structures, working principles, classifications, scope of application, product advantages and disadvantages and operation methods, which can be simply divided into two categories: traditional submerged pumps (explosion-proof in zone 1 outside the tank, non-explosion-proof in zone 0 in the tank) and new submerged pumps (explosion-proof in zone 1 outside the tank and explosion-proof in zone 0 in the tank).

5. Shielded pump: The drive of the ordinary centrifugal pump is to connect the impeller shaft of the pump with the electric shaft through the coupling, so that the impeller and the motor rotate together and work, while the shielded pump is a sealless pump, the pump and the drive motor are sealed in a pressure vessel filled with pumped medium, this pressure vessel is only statically sealed, and a wire group is used to provide a rotating magnetic field and drive the rotor.

There are centrifugal pumps, reciprocating pumps, piston pumps, magnetic pumps, I was interned in a chemical plant, reciprocating pumps, and centrifugal pumps see a lot, magnetic pumps are okay, piston pumps have not been used, the most common should be centrifugal pumps.

Depending on what kind of chemical plant it is, centrifugal pumps are mainly used to transport water, dilute liquids and the like, and the advantage is that the head is high and the flow rate is large. Progressive cavity pumps are mainly used to transport liquids with high viscosity, and their volume is large. Overall, centrifugal pumps are used with multi-point.

Stainless steel is acid and corrosion resistant.

What working conditions are required? It's just what kind of pump you use.

The chemical pump is a pump specially used to transport various chemicals, and its main feature is that it can withstand special media such as strong corrosiveness, flammability and explosion, high temperature and high pressure. Commonly used chemical pumps include centrifugal pumps, submersible pumps, diaphragm pumps, screw pumps, etc. The technical standards of chemical pumps mainly include the following aspects:

Pump material: According to the nature of the medium and the requirements of Youshansan temperature and pressure, select the corresponding pump body, impeller, seal and other materials.

Flow and head of the pump: According to the process requirements and pipeline parameters, the flow rate and head of the pump are determined.

Pump structure: According to the nature of the medium and the transportation requirements, choose different pump structures, such as single-stage, multi-stage, internal gear, external gear, etc.

Sealing form of pump: According to the nature of the medium and process requirements, select the appropriate sealing form, such as mechanical seal, packing seal, magnetic seal, etc.

Installation and maintenance of pumps: According to the special properties and process requirements of the pump, special installation and maintenance are carried out, such as avoiding pump corrosion, preventing static electricity in the pump operation process, etc.

Chemical pump is a national joint design of energy-saving pump, pump performance, technical requirements, according to the international standard ISO2858 specified in the performance and size design, can be divided into stainless steel chemical pump, plastic chemical pump, fluoroplastic chemical pump, electric chemical pump, pneumatic chemical pump.

The advantages of chemical pumps are that the layout of the whole series of water conservancy performance is reasonable, and the user choice range is wide"Rear open"The structure, easy maintenance, efficiency and suction lift have reached the international advanced level.

It is widely used in industry, urban water supply, drainage, and can also be used for drainage and irrigation of farmland and orchards, for transporting clean water or other liquids with physical and chemical properties similar to clean water.

Collapse the categories in this paragraph.

According to the different materials of chemical pumps, their application fields are classified as follows:

1) Chemical pumps (stainless steel) are widely used in petroleum, chemical, metallurgy, synthetic fiber, pharmaceutical, food, synthetic fiber and other departments to transport alkaline corrosive media;

2) Chemical pump refers to the round collapse (fluoroplastic material) used to transport any acidic, alkaline corrosive medium;

3) Chemical pumps (cast iron) are used for industrial and urban water supply and drainage, and can also be used for drainage and irrigation of farmland and orchards for transporting clean water or other liquids with physical and chemical properties similar to clean water.

According to the different uses of chemical pumps, their classification is described in detail:

1) Process flow chamber grinding pump: including feed pump, return pump, circulation pump, flushing pump, sewage pump, filling round charging pump, output pump, etc.

2) Public works pumps: including boiler pumps, cooling tower pumps, fire pumps, deep well pumps for water sources, etc.

3) Auxiliary pumps: including lubricating oil pumps, sealed oil pumps, hydraulic transmission pumps, etc.

4) Pipeline pump: pump for oil pipeline, pump for loading and unloading truck, etc.

Pump is a machine used to transport liquid and increase its pressure, chemical operation pump is a general term, and chemical pump refers to the special requirements of chemical production for pumps: can meet the needs of chemical process high and low temperature resistance corrosion resistance wear resistance no leakage or less leakage can transport liquid in a critical state Reliable operation mainly refers to the irritation characteristics of the medium, which can improve the requirements of the lead products next to the pump for corrosion caused by all chemicals except pure water through changes in materials or other structures. These pumps are collectively referred to as chemical pumps. The chemical pump is mainly composed of the pump body, impeller, pump cover and other parts.

We usually think that the pumps that are used to transport corrosive, acid-alkaline mediates, electrolytic solvents, oxidizing solvents, etc., can be called chemical pumps, but at the international level, this standard is more stringent, and it must meet the corresponding processing and production technology before it can be called a chemical pump.

The chemical spine pump refers to the special requirements of chemical production for pumps: mainly to meet the following requirements, before it can quietly become a chemical pump.

1) It can meet the needs of chemical processes;

2) High and low temperature resistance.

3) Resistant to corrosion and corrosion.

4) Abrasion resistance.

5) No leakage or less leakage.

6) It can convey liquids in a critical state.

7) Reliable operation.

1. According to the different materials of chemical pumps, chemical pumps are classified as follows:

1) Chemical pumps (not stuffy and rusty steel) are widely used in petroleum, chemical, metallurgy, synthetic fiber, pharmaceutical, food, synthetic fiber and other departments for transporting alkaline corrosive media;

2) Chemical pump (fluoroplastic) is used to transport any acidic, alkaline corrosive medium;

3) Chemical pumps (cast iron) are used for industrial, urban water supply, drainage, and can also be used for drainage and irrigation of farmland and orchards, for selling and transporting clean water or other liquids similar to clear water in physical and chemical properties.

The single-stage single-suction fluoroplastic alloy chemical centrifugal pump is designed and produced in accordance with international standards and combined with the processing technology of non-metallic pumps. The pump body is lined with a metal shell and lined with polyperfluoroethylene propylene (F46), the pump cover, impeller and shaft die coding sleeve are all made of metal inserts and covered with fluoroplastic integral sintering and pressing, the shaft seal is made of PTFE filling material, and the inlet and outlet are made of cast steel body plus danqing nagu.

Green brand explosion-proof chemical submersible pump, machine and pump integration, motor and pump are explosion-proof, are in the storage tank, cover the mountain to distinguish the traditional motor on the ground, explosion-proof grade (EXDS BT4 ga GB, protection level IP68, can be used in the 0 area ** area, widely used in chemical, pharmaceutical, food and other flammable and explosive media underground tanks, is a positive pressure push medium, no air resistance, envy material carbon steel, 304 316 stainless steel. For more details, search for Green Submersible Pumps to learn more about the performance of explosion-proof pumps**.

Sending red envelopes is a kind of technical work, there is no technical standard, just have hands, I recommend everyone to do it.

The chemical pump is a single-stage single-suction fluoroplastic alloy chemical centrifugal pump, which is designed and produced in accordance with international standards and combined with the processing technology of non-metallic pumps.

The leveling of the pump shall meet the following requirements

1. The longitudinal and transverse non-levelness of horizontal and vertical pumps should not be exceeded; When measuring, it should be based on the processing of filial piety;

2. There should be no obvious deviation of the pump for small overall installation.

Article 7 The alignment of the pump shall meet the following requirements:

1. When the driving shaft and the driven shaft are connected by a coupling joint, the different axiality of the two shafts and the gap between the end faces of the two halves of the coupling should be in line with the equipment.

provisions of the technical documentation; If there is no provision in the technical documents of the equipment, it shall comply with the provisions of the General Provisions of the first volume of this specification;

2. The driving shaft and the driven shaft are connected by a belt, and the non-parallelism of the two shafts and the offset of the two wheels should conform to the first volume of the old code "Ventilation Regulations".

Provisions;

3. Before the prime mover is connected to the pump (or transmission), the steering of the prime mover should be tested separately and then connected after confirmation;

Fourth, after the driving shaft and the driven shaft are aligned and connected, they should be turned around to check whether they are flexible;

5. After the pump is connected to the pipeline, the correction should be re-calibrated, and the pipeline should be adjusted if it is not normal due to the connection with the pipeline.

The first is the basic flow head power. Shaft power. Then there is the anti-corrosion level of the pump body, the motor protection level, and the explosion-proof level. energy-saving level, etc.

The main requirement is the material, for the liquid of different media, chemical pumps of different materials must be used.

API610 Appendix G Material Grade User Guide.

Chemical pumps are mainly used to convey corrosive media or liquids without solid particles in various chemical liquids, petroleum, pharmaceutical, food, electronics, electroplating, textiles and other industrial sectors. It has a wide range of uses, including but not limited to the following:

Petrochemical industry: oil refining, fertilizer, lubricating oil, ethylene, styrene and other process uses in the production process of transportation, circulation, pressurization and other processes.

Chemical industry: organic synthesis, chemical thermal cycle, environmental protection engineering, etc.

Pharmaceutical industry: conveying, circulation, filtration, concentration and other process uses in the production process.

Food industry: transportation, circulation, filtration and other workers in the production process of beverages, beer, fruit juices, syrups and other food preparations.

Electronics, electroplating, textile and other industries: liquid transportation, circulation, etc. in the production process.

Chemical pumps are widely used in the above industries, and therefore, the medium, temperature, pressure and other conditions faced by chemical pumps in different industries will be different, so they need to be selected according to the actual situation.

Chemical pumps are suitable for pumping corrosive liquids from bottles, bright drums, cylinders, pools or other containers. Chemical lifting pumps are widely used in chemical, petroleum, metallurgy, light industry, synthetic fiber, environmental protection, food, medicine and other departments. The chemical pump has the advantages of stable and reliable performance, good sealing performance, beautiful appearance, easy use and maintenance.

It is widely used in industry, urban water supply, drainage, and can also be used for farmland, orchard drainage, rent, excavation and irrigation, for transporting clean water or other liquids with similar physical and chemical properties to clean water.