Multi-stage centrifugal pump for saline injection

Abstract

The invention belongs to the field of food processing, relates to a multistage centrifugal pump for saline injection. The multistage centrifugal pump for saline injection comprises a motor, a water pump shaft, a linkage disc, a base, first impellers, a plurality of pump shell sets and a front disc, wherein one end of the water pump shaft sleeves the outer side of a motor output shaft, the other end of the water pump shaft penetrates the linkage disc and the base, and the first impellers and the pump shell sets are arranged in a closed space formed by the base and the front disc. The pump shellsets comprise pump shells and second impellers, the pump shells are in a half-barrel shape, sealing disc faces are arranged on the bottom sides of the pump shells, spiral water channels are welded tothe inner sides of the sealing disc faces, the second impellers are arranged on the inner sides of the pump shells, and the first impellers and the second impellers sleeve the other end of the waterpump shaft. According to the multistage centrifugal pump for saline water injection, viscous saline water containing insoluble particles can be conveyed, the application process is wide, an experimental small-capacity saline water injection machine can be provided, and high-economic-benefit supply of saline water injection machines for factories in large-batch industrial production can also be achieved.

Description

technical field [0001] The invention belongs to the field of food processing and relates to a multistage centrifugal pump for saline injection. Background technique [0002] The saline pump device is the core liquid supply configuration of the saline injection machine. When the injection machine is running, the injection liquid needs to be pressurized by the saline pump to send the injection liquid in the liquid tank into the liquid pipeline. Through linkage control of the opening time of the liquid valve, it is ensured that the injection liquid is evenly injected into the raw meat to ensure the completion of the marinating process. The different forms and working methods of the brine pump determine the scope of application and performance limitations of the injection machine. [0003] The traditional injection machine brine pump mainly adopts the following forms: [0004] Vortex pump: It transports liquid through the three-dimensional flow momentum exchange of the liquid ...

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Problems solved by technology

However, the pressure of the single-stage centrifugal pump is not high enough to achieve the injection pressure of 7-10 kg required by the injection process. Many manufacturers adopt the structure of adding an energy storage tank at the back, resulting in a complex structure, improper cleaning, easy breeding of bacteria and a large amount of waste of injection fluid.

[0006] Reciprocating pump: The liquid end directly delivers the injection, and the power end uses a hydraulic system or an electromagnetic transmission system to transfer kinetic energy to the liquid end. The disadvantages are: the structure of the power end is complex, the transmission efficiency is low, the injection pressure is unstable, and continuous injection cannot be completed. , the high transport volume of brine cannot be completed at high speed, and the cost performance is not high

[0007] Gear pump: Through the meshing movement of the active and driven gears, the volume of the suction chamber is increased to enter the liquid, and the volume of the discharge chamber is reduced to discharge the liquid. Continuous and stable operation can achieve stable discharge pressure and flow. The gear pump is not suitable for liquid transportation containing solid particles. , so there are great limitations in the application of saline injection machines. When there are protein insoluble particles in the injection, the delivery pump will be severely worn, and the service life of the injection machine will be shortened. The later maintenance costs will remain high.

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