Axial flushing chemical pump with salt-resistant corrosion-resistant pump shaft

Abstract

The invention discloses an axial flushing chemical pump with a salt-resistant corrosion-resistant pump shaft. The axial flushing chemical pump comprises a pump body, a water inlet is formed in one side of the pump body, a water outlet is formed in the top of the pump body, one end of the water outlet is fixedly connected with a water outlet pipe through a flange, one end of the water inlet is fixedly connected with a water inlet pipe through a flange, a second branch pipe is connected to the water outlet pipe in a penetrating mode, a backflow pipe is connected to the water inlet pipe in a penetrating mode, a first branch pipe is arranged on the tops of the backflow pipe and the second branch pipe in a sliding mode, a lifting device is connected to the first branch pipe and comprises a bottom plate, a first motor is fixedly connected to the bottom of the bottom plate through bolts, an output shaft of the first motor penetrates through the bottom plate, one end of the output shaft of thefirst motor is connected with a lead screw through a coupler, a guide rod is correspondingly installed at the top of the bottom plate, and a first electromagnet is installed at the top end of the lead screw. The axial flushing chemical pump has the advantages that throttling damage is prevented and convenience is brought to on-off.

Description

technical field [0001] The invention relates to the technical field of chemical pumps, in particular to an axial flushing chemical pump with salt-resistant and corrosion-resistant pump shafts. Background technique [0002] Various chemical pumps, such as centrifugal pumps, oil transfer pumps and seawater lift pumps, are used in marine engineering consisting of oil production platforms and gathering pipelines. Due to the high corrosiveness of seawater, materials with higher strength are required to adapt to the particularity of offshore oil pumps. [0003] However, during the use of existing petrochemical pumps, once the outlet valve is closed, the loss of the pipeline system will be greatly increased, the flow rate will be greatly reduced and its power will be directly affected. Therefore, the outlet throttling technology is often used on chemical pumps. Install a throttling baffle on the pipeline, and close the baffle if the flow rate needs to be reduced. However, this met...

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Problems solved by technology

[0003] However, during the use of existing petrochemical pumps, once the outlet valve is closed, the loss of the pipeline system will be greatly increased, the flow rate will be greatly reduced and its power will be directly affected. Therefore, the outlet throttling technology is often used on chemical pumps. Install a throttling baffle on the pipeline, and close the baffle if the flow rate needs to be reduced. However, this method is not suitable for petrochemical pumps with steep drop-off performance curves. If there are multi-stage pumps, axial flow may even occur. Power mutation damage and other issues

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