A high-pressure plunger pump one-way valve body dismounting device

Abstract

The utility model discloses a high pressure plunger pump one -way valve body dismounting device belongs to pump body overhauling tool technical field. Including dismounting screw rod, and the dismounting screw rod one end is equipped with traction screw section and the dismounting thread hole of valve body screwing, and the other end is equipped with transmission screw section, and the transmission screw section is sequentially slid and is equipped with the locating disc, the antifriction bearing and is screwed pressure -bearing nut. A plurality of thread protection sleeves are welded on the locating disc, are used for setting on the gland stud of valve body and realize positioning and protection. When working, rotating pressure -bearing nut pushes the abutment of antifriction bearing and locating disc, and then drives dismounting screw rod to pull out valve body steadily. The utility model discloses through the design of sliding locating disc and multiple protection sleeves, realizes positioning and comprehensive protection, utilizes screw rod nut force increasing mechanism, and safely, efficiently completes dismounting operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of pump body maintenance tools, specifically relating to a valve body disassembly device for a high-pressure plunger pump check valve. Background Technology

[0002] Vertical plunger pumps are mainly used in high-pressure, high-flow, and flow-regulating applications. Their check valves, being vulnerable components, require regular maintenance. Current maintenance procedures typically utilize pre-drilled disassembly threads on the valve body to remove the check valve from the pump cylinder by impact. This method relies heavily on the impact force of tools like hammers, which is limited by the weight of the hammer, resulting in low disassembly efficiency. Furthermore, when the fit between the valve body and cylinder is too tight, disassembly is often difficult. Improper operation can easily damage the threads on the valve body or cylinder, and may even lead to accidents causing crush injuries to operators. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a one-way valve body disassembly device for a high-pressure plunger pump, which can quickly and safely remove the one-way valve body from the cylinder, effectively avoiding thread damage and personal injury, and improving disassembly efficiency.

[0004] The present invention relates to a valve body disassembly device for a high-pressure plunger pump check valve, comprising a disassembly screw, wherein the disassembly screw is provided with a traction thread section and a transmission thread section in sequence, the traction thread section is screwed into the disassembly thread hole of the valve body, and the transmission thread section is provided with a positioning plate and a thrust bearing in sequence and screwed into a pressure-bearing nut. The positioning disc end face is fixedly connected with a bolt protective sleeve corresponding to the gland bolt on the plunger pump cylinder body to achieve positioning; Rotating the pressure nut pushes the thrust bearing against the positioning plate, thereby driving the disassembly screw and the valve body connected thereto to produce a pull-out displacement.

[0005] The positioning plate is a disc-shaped component with a through hole in the center, which is clearance-fitted with the body of the disassembly screw.

[0006] The bolt protective sleeve is a cylindrical structure and is welded to the positioning plate.

[0007] The pressure-bearing nut is a hexagonal nut.

[0008] The end of the disassembly screw is provided with a hexagonal head to prevent it from rotating.

[0009] The beneficial effects of this utility model are: Compared with the prior art, this utility model can simultaneously cover all the cap studs by using a sliding positioning plate and multiple threaded protective sleeves fixed thereto, so as to achieve centering and protection during the disassembly process and effectively avoid misalignment and thread damage. The screw nut force-enhancing mechanism generates a stable and powerful axial tensile force by rotating the pressure-bearing nut, which replaces dangerous impact operations, ensures the safety of operators, and significantly improves disassembly efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0011] Figure 1 This is a schematic diagram of the overall structure of the disassembly device in the embodiment.

[0012] Figure 2 This is a schematic diagram showing the usage state of the disassembly device in the embodiment.

[0013] Figure 3 This is a cross-sectional view of the disassembly device in use in the embodiment.

[0014] In the attached diagram, the structural names represented by each number are as follows: 1-Disassembly screw, 11-Traction threaded section, 12-Transmission threaded section, 13-Hexagonal head, 2-Positioning plate, 3-Bolt protective sleeve, 4-Thrust bearing, 5-Pressure bearing nut, 6-Valve body, 7-Plunger pump cylinder body, 8-Gland bolt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1 See Figures 1 to 3 As shown, a valve body disassembly device for a high-pressure plunger pump check valve is provided, including a disassembly screw 1, a positioning plate 2, a bolt protective sleeve 3, a thrust bearing 4, and a pressure-bearing nut 5.

[0017] One end of the disassembly screw 1 is a traction thread section 11, which is used to screw into the disassembly threaded hole in the center of the valve body 6; the other end is a transmission thread section 12, and its end is fixed with a hexagonal head 13.

[0018] The positioning disc 2 is a disc-shaped component with a through hole in its center. This through hole is clearance-fitted with the transmission thread section 12, allowing the positioning disc 2 to move on the disassembly screw 1. Multiple cylindrical bolt protective sleeves 3 are welded to the end face of the positioning disc 2, and their number and position correspond to the gland bolts 8 on the plunger pump cylinder body 7.

[0019] The thrust bearing 4 and the pressure nut 5 are sequentially installed on the transmission thread section 12 and located behind the positioning plate 2. The thrust bearing 4 is slidably sleeved on the transmission thread section 12; the pressure nut 5 is a hexagonal nut, threadedly connected to the transmission thread section 12, which facilitates the application of torque through tools.

[0020] Working principle: First, the traction threaded section 11 at the front end of the disassembly screw 1 is bolted to the disassembly threaded hole in the center of the check valve body 6 using a hexagonal head 13. The positioning disc 2 is then fitted onto the transmission threaded section 12, and the multiple bolt protective sleeves 3 welded onto it are respectively fitted onto each pressure cap bolt 8, completing the centering and thread protection. Next, the thrust bearing 4 is fitted onto the screw 1 behind the positioning disc 2, and then the pressure nut 5 is bolted onto the thrust bearing 4. The inner diameter of the thrust bearing 4 is slightly larger than the outer diameter of the screw 1, and the pressure nut 5 prevents it from not contacting the positioning disc 2.

[0021] Rotate the pressure nut 5 to move the lead screw 1 outward, thereby smoothly pulling the valve body 6 out of the plunger pump cylinder 7.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. A high-pressure plunger pump check valve body dismounting device, characterized by, The device includes a disassembly screw (1), which is provided with a traction thread section (11) and a transmission thread section (12) in sequence. The traction thread section (11) is screwed into the disassembly thread hole of the valve body (6). The transmission thread section (12) is provided with a positioning plate (2) and a thrust bearing (4) in sequence and screwed into a pressure nut (5). The end face of the positioning plate (2) is fixedly connected with a bolt protection sleeve (3) corresponding to the gland bolt (8) on the piston pump cylinder body (7); Rotate the pressure nut (5) to push the thrust bearing (4) to abut against the positioning plate (2), thereby driving the disassembly screw (1) and the valve body (6) connected thereto to produce a pull-out displacement.

2. The high-pressure plunger pump check valve body disassembly device according to claim 1, characterized in that, The positioning plate (2) is a disc-shaped component with a through hole in the center, which is in clearance fit with the body of the disassembly screw (1).

3. The valve body disassembly device for the high-pressure plunger pump check valve according to claim 1, characterized in that, The bolt protective sleeve (3) is a cylindrical structure and is welded to the positioning plate (2).

4. The valve body disassembly device for the high-pressure plunger pump check valve according to claim 1, characterized in that, The pressure-bearing nut (5) is a hexagonal nut.

5. The valve body disassembly device for the high-pressure plunger pump check valve according to claim 1, characterized in that, The end of the disassembly screw (1) is provided with a hexagonal head (13).

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