A screw-type disassembly tool

Abstract

The invention provides a screw type disassembling tool which is characterized by comprising a body supporting pressing cap, a tappet lead screw and an adjusting rod. An external thread is arranged at one end of the body supporting pressing cap, wherein the external thread can be connected with an internal thread of a valve box pressing cap hole in a plunger pump fluid end assembly, the other end of the body supporting pressing cap is fixedly connected with a retaining nut, the retaining nut is in threaded connection with the tappet lead screw, a loop is arranged in the body supporting pressing cap, a supporting sleeve and end face bearings are arranged in the loop, wherein the end face bearings are located at the two ends of the supporting sleeve, one end of the tappet lead screw is arranged in the supporting sleeve in a sliding mode, an adjusting handle is arranged on the outer side of the other end of the tappet lead screw, the adjusting rod is arranged in a center hole of the tappet lead screw, one end of the adjusting rod is connected with a pop-rivet, and the pop-rivet is in threaded connection with the loop. Compared with the prior art, the screw type disassembling tool has the advantages that the structure is simple, the problem that a plunger and a gland are difficultly disassembled under practical situations is completely solved, efficiency for disassembling the plunger and the gland on a scene is improved, and replacement time is saved.

Description

technical field [0001] The invention relates to a screw type disassembly tool, which belongs to the tool field of the hydraulic end assembly of a plunger pump of a fracturing vehicle. Background technique [0002] The disassembly tool is a necessary tool for the hydraulic end assembly of the plunger pump of the fracturing vehicle. Since the valve body, valve seat, plunger, and packing seal components in the hydraulic end assembly of the plunger pump are vulnerable parts, It needs to be disassembled and replaced frequently; the plunger is located in the sealing hole of the plunger cylinder of the valve box, and forms an interference fit with the sealing assembly of the packing box, and the interference is about 1.2mm; the suction gland is located at the sealing hole of the valve box gland, and the suction The sealing groove of the gland is equipped with a sealing component, which forms an interference fit with the sealing hole of the gland when assembled, and the interference...

AI Technical Summary

Problems solved by technology

[0002] The disassembly tool is a necessary tool for the hydraulic end assembly of the plunger pump of the fracturing vehicle. Since the valve body, valve seat, plunger, and packing seal components in the hydraulic end assembly of the plunger pump are vulnerable parts, It needs to be disassembled and replaced frequently; the plunger is located in the sealing hole of the plunger cylinder of the valve box, and forms an interference fit with the sealing assembly of the packing box, and the interference is about 1.2mm; the suction gland is located at the sealing hole of the valve box gland, and the suction The sealing groove of the gland is equipped with a sealing component, which forms an interference fit with the sealing hole of the gland when assembled, and the interference is about 1.5mm; when it is necessary to assemble or replace the wearing parts in the valve box, the original disassembly method is used , the tool is very bulky, screw one end of the long pull rod into the thread end of the gland, pull the hammer to cover the long pull rod, hold the pull hammer and repeatedly impact outwards hard, so that the suction gland and sealing components will slowly move out and fall off; especially in the When disassembling the plunger, one end of the plunger is in the deep hole in the valve box, the diameter of the hole is small and the space is narrow, the arm cannot be extended into the hole for operation, and it is difficult to screw the threaded end of the rod into the threaded hole of the plunger accurately; then reinstall the plunger When plugging and glandping, you can only straighten the plunger and gland with your hands, and knock them one by one with a big hammer. The operation is very time-consuming; the entire disassembly process seems simple, but there are many hidden dangers in reality; one is personal safety. 1. During the disassembly process, the suction gland and the plunger are relatively heavy, and the pull hammer is too strong, and the balance force cannot be grasped, which may easily cause safety accidents; second, the product quality is safe, and it is easy to bruise and pull Damage to the sealing hole of the valve box gland, the sealing surface of the suction gland and the plunger, causing the roughness of the sealing surface to fail to meet the standard and resulting in failure and scrapping; third, the sealing components are easily damaged during disassembly and assembly, and are scrapped due to failure of the sealing effect

If there is no special disassembly tool, it is very troublesome to complete the replacement of wearing parts conveniently and quickly; therefore, designing reasonable plunger and gland disassembly tools can improve the efficiency of on-site replacement of wearing parts and save replacement time is a very important technical problem

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