Valve pulling tool for augmented injection pump

Abstract

The invention relates to the field of tools and equipment for assembling or separating parts or articles, in particular to a valve pulling tool for an augmented injection pump. The valve pulling tool for the augmented injection pump comprises a valve pulling tool body, a center hole is formed in the valve pulling tool body, a rotor is installed in the center hole of the valve pulling tool body, an axial middle through hole is formed in the rotor, a valve pulling screw rod is installed in the middle through hole, and the valve pulling screw rod and the rotor are matched through threads. A connector used for being connected with a valve element of the augmented injection pump is arranged at the lower end of the valve pulling screw rod, the rotor is installed in the valve pulling tool body in an anti-disengaging mode through a blocking cap, and a rotating disc is fixedly connected to the outer wall of the rotor. According to the augmented injection pump valve pulling tool, more time and labor are saved during valve pulling, the working efficiency is improved, the length and the position of the supporting leg can be flexibly adjusted so that the augmented injection pump valve pulling tool can be suitable for various working environments, and the augmented injection pump valve pulling tool is further provided with a variable-diameter head so that the augmented injection pump valve pulling tool can be suitable for augmented injection pumps of different models.

Description

Technical Field

[0001] This invention relates to the field of tools and equipment for assembling or separating parts or articles, and more particularly to a valve removal tool for a booster pump. Background Technology

[0002] In the field of oilfield production, injection pumps are a common type of high-pressure and ultra-high-pressure water injection equipment. The aging of injection pump equipment and corrosion by sewage are serious problems, requiring frequent replacement of valve body seals. However, the gap between the valve core and the valve body is small and the liquid viscosity is high, making it difficult to remove the valve core. Removing the valve core usually takes 1-2 hours, which is time-consuming, labor-intensive, and inefficient.

[0003] Chinese utility model patent CN203804897U, published on September 3, 2014, discloses a multifunctional puller. The device includes a crossbar, a lead screw, and two vertical support rods. The lower end of the lead screw is provided with a threaded joint with the opposite thread direction to the lead screw thread. The lead screw and the threaded joint are fixedly connected. In use, the threaded joint is installed on the valve core that needs to be disassembled, and the valve core is pulled out by rotating the lead screw. However, since the thread direction of the threaded joint is opposite to the thread direction of the lead screw, the valve core will rotate synchronously when the lead screw is rotated. However, due to the large friction between the valve core and the valve body, the valve core is difficult to rotate within the valve body, and it is relatively difficult to rotate the lead screw. Summary of the Invention

[0004] The purpose of this invention is to provide a valve removal tool for booster pumps to solve the problem that existing valve removal tools require considerable effort to rotate the lead screw when removing the valve due to the large friction between the valve core and the valve body.

[0005] To achieve the above objectives, the injection pump valve removal tool of the present invention adopts the following technical solution:

[0006] A valve removal tool for a booster pump includes a valve removal tool body with a central hole. A rotor is installed inside the central hole of the valve removal tool body. The rotor has an axial through hole in the middle, and a valve removal screw is installed inside the through hole. The valve removal screw and the rotor are connected by a thread. The lower end of the valve removal screw is provided with a connector for connecting to the valve core of the booster pump. The rotor is installed inside the valve removal tool body with a stop cap to prevent it from detaching. A turntable is fixedly connected to the outer wall of the rotor.

[0007] Furthermore, the valve-pulling tool body is equipped with rollers and steel rings, which cooperate to form a bearing mechanism, which is installed below the rotor.

[0008] Furthermore, the rotor has a two-layer frustum structure, with the diameter of the lower frustum being larger than that of the upper frustum, and the stop cap is fitted onto the upper end of the lower frustum.

[0009] Furthermore, the turntable is mounted on the outer wall of the upper frustum of the rotor.

[0010] Furthermore, an assist rod is installed on the outer wall of the turntable, and the assist rod is threadedly connected to the turntable.

[0011] Furthermore, the stop cap and the valve-pulling tool body are fixedly connected by screws.

[0012] Furthermore, a support leg is installed on the valve-pulling tool body. The support leg passes through a hole in the valve-pulling tool body. Nuts are provided at both ends of the hole in the valve-pulling tool body. The support leg is fastened to the valve-pulling tool body through the nuts at both ends of the hole in the valve-pulling tool body.

[0013] Furthermore, the outrigger is connected to a foot, and the foot is connected to the outrigger by a universal joint.

[0014] Furthermore, the booster pump valve removal tool is also equipped with a reducing head, which has a central hole. The inner wall of the central hole of the reducing head has an internal thread for connecting with the connector, and the outer wall surface of the reducing head has an external thread for connecting with the booster pump valve core.

[0015] Furthermore, the top of the valve pull screw has a mounting hole for an anti-rotation rod to prevent the valve pull screw from rotating.

[0016] Beneficial Effects: This invention, a valve removal tool for a booster pump, is an improved invention. Specifically, the valve removal tool of this invention installs a connecting head or reducing head on the valve removal screw onto the valve core inside the booster pump. The valve removal screw is threadedly engaged with the rotor, and the turntable is fixedly connected to the rotor. During operation, rotating the turntable causes the valve removal screw to rise and pull out the valve core. The valve removal screw does not rotate during the valve removal process, making it more time-saving and labor-saving. The support legs installed on the main body of the valve removal tool can be flexibly adjusted in length and position, making this booster pump valve removal tool suitable for various working environments. This booster pump valve removal tool of this invention saves more time and labor when removing valves, improves work efficiency, and allows for flexible adjustment of the length and position of the support legs to suit various working environments. Furthermore, the booster pump valve removal tool of this invention has a reducing head to accommodate different models of booster pumps. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the injection pump valve removal tool of the present invention;

[0018] Figure 2 This is a schematic diagram of the main body of the valve removal tool of the injection pump valve removal tool of the present invention;

[0019] Figure 3 This is a top view of the valve removal tool body of the injection pump valve removal tool of the present invention;

[0020] Figure 4 This is a schematic diagram of the rotor structure of the injection pump valve removal tool of the present invention;

[0021] Figure 5 This is a top view of the rotor of the injection pump valve removal tool of the present invention;

[0022] Figure 6 This is a schematic diagram of the rotor cap of the injection pump valve removal tool of the present invention;

[0023] Figure 7 This is a top view of the rotor stop cap of the injection pump valve removal tool of the present invention;

[0024] Figure 8 This is a schematic diagram of the valve-pulling screw of the injection pump valve-pulling tool of the present invention;

[0025] Figure 9 This is a bottom view of the valve-pulling screw of the injection pump valve-pulling tool of the present invention;

[0026] Figure 10 This is a schematic diagram of the support leg of the injection pump valve removal tool of the present invention;

[0027] Figure 11 This is a top view of the support leg of the injection pump valve removal tool of the present invention.

[0028] In the diagram: 1. Valve pulling tool body; 2. Turntable; 3. Rotor; 4. Rotor stop cap; 5. Valve pulling screw; 6. Anti-rotation hole; 7. Assist rod; 8. Hexagonal socket positioning screw; 9. Stop cap fixing screw; 10. Steel ring; 11. Roller; 12. Support leg fixing nut; 13. Support leg limit adjusting nut; 14. Support leg; 15. Support leg limit fixing nut; 16. Support leg universal ball; 17. Support leg base; 18. Connector; 19. Variable diameter head. Detailed Implementation

[0029] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0030] This invention addresses the problem that existing injector pump valve removal tools require considerable effort to rotate the lead screw due to significant friction between the valve core and valve body during valve removal. It proposes a more time-saving and labor-saving injector pump valve removal tool with adjustable leg length and position. Furthermore, this injector pump valve removal tool features a variable diameter head to accommodate different injector pump models.

[0031] In a basic embodiment, such as Figure 1As shown, the valve-pulling screw 5 is mounted on the rotor 3, and the valve-pulling screw 5 and the rotor 3 are threaded together. The rotor 3 is installed inside the valve-pulling tool body 1. The lower end of the valve-pulling screw 5 is provided with a connector 18, which is connected to the valve core inside the injection pump. A rotor cap 4 is provided on the rotor 3, and the rotor cap 4 is fixedly connected to the valve-pulling tool body 1 by a cap fixing screw 9. A turntable 2 is fixedly connected to the outer wall of the rotor 3. When performing the valve-pulling operation, the rotor 3 is rotated by rotating the turntable 2, which in turn drives the valve-pulling screw 5 to rise, thereby pulling the valve core out of the valve body.

[0032] In a preferred embodiment, such as Figure 4 , 5 As shown, rotor 3 is a two-layer frustum structure. The inner diameter of rotor cap 4 is larger than the outer diameter of the upper layer of rotor 3 but smaller than the outer diameter of the lower layer of rotor 3, so that rotor cap 4 can block rotor 3 and prevent rotor 3 from moving upward and falling off. Rotor 2 is fixedly connected to the upper layer of rotor 3 by hexagonal positioning screws 8. A booster rod 7 is installed on the turntable 2 and is fastened to the turntable 2 by threads. The booster rod 7 makes the rotation of rotor 3 easier. In use, connector 18 is connected to the valve core in the booster pump. Rotating turntable 2 drives rotor 3 to rotate, thereby causing valve pull screw 5 to rise and pull out the valve core in the booster pump.

[0033] In a preferred embodiment, such as Figure 1-7 As shown, the valve-pulling screw 5 is mounted on the rotor 3, and the valve-pulling screw 5 and the rotor 3 are connected by a thread. The rotor 3 is installed inside the valve-pulling tool body 1. A steel ring 10 and a roller 11 are provided at the lower end of the rotor 3. The roller 11 and the steel ring 10 cooperate to form a bearing mechanism. The roller 11 and the steel ring 10 can reduce the friction between the rotor 3 and the valve-pulling tool body 1, making the valve-pulling process more effortless. A connector 18 is provided at the lower end of the valve-pulling screw 5. The connector 18 is connected to the valve core in the injection pump. A rotor is mounted on the rotor 3. The rotor stop cap 4 is fixedly connected to the valve-pulling tool body 1 by the stop cap fixing screw 9. The rotor 3 is a two-layer frustum structure. The inner diameter of the rotor stop cap 4 is larger than the outer diameter of the upper layer of the rotor 3 and smaller than the outer diameter of the lower layer of the rotor 3, so that the rotor stop cap 4 can block the rotor 3 and prevent the rotor 3 from moving upward and falling off. The upper layer of the rotor 3 is fixedly connected to the turntable 2 by the internal hexagonal positioning screw 8. The turntable 2 is equipped with an assist rod 7, which is fastened to the turntable 2 by threads. The assist rod 7 makes the rotation of the rotor 3 easier. In use, the connector 18 is connected to the valve core in the booster pump. Rotating the turntable 2 drives the rotor 3 to rotate, thereby causing the valve-pulling screw 5 to rise and pull out the valve core in the booster pump.

[0034] In other embodiments, the assist rod 7 can be directly welded to the outer wall of the turntable 2.

[0035] In a preferred embodiment, such as Figure 1-3As shown in Figures 10 and 11, round holes are provided at the four corners of the valve-pulling tool body 1. Support legs 14 are respectively inserted into these holes. The support legs 14 are securely connected to the valve-pulling tool body 1 via support leg fixing nuts 12 and support leg limiting adjusting nuts 13. The support leg fixing nuts 12 and support leg limiting adjusting nuts 13 can adjust the length of the support legs 14. A support leg limiting fixing nut 15 is fixedly installed at the lower end of the support leg 14 to limit the support leg limiting adjusting nut 13. A support leg universal ball 16 is also installed at the lower end of the support leg 14, and a support leg base 17 is provided below the support leg universal ball 16. The support leg universal ball 16 and the support leg base 17 are rotatably engaged. During use, the length of the support legs can be adjusted via the support leg limiting adjusting nut 13, and the position of the support legs can be flexibly adjusted via the support leg universal ball 16, making the valve-pulling tool of this invention suitable for various working environments.

[0036] In a preferred embodiment, such as Figure 1 , 8 As shown in Figure 9, an anti-rotation hole 6 is machined at the top of the valve-pulling screw 5. The valve-pulling screw 5 is mounted on the rotor 3, and the valve-pulling screw 5 and the rotor 3 are connected by a thread. The rotor 3 is installed inside the valve-pulling tool body 1. In use, an anti-rotation rod is inserted into the anti-rotation hole 6 to prevent the valve-pulling screw 5 from rotating. Rotating the assist rod 7 causes the turntable 2 to rotate, which in turn drives the rotor 3 to rotate, causing the valve-pulling screw 5 to rise. Lifting the valve-pulling screw 5 and connecting head 18 completes the valve-pulling operation.

[0037] In a preferred embodiment, the connector 18 and the valve-pulling screw 5 are integrated, and a reducing head 19 is also provided. The reducing head 19 has an internal thread that can connect with the connector 18, and an external thread on its outer circumference that can connect with the valve core of the booster pump. The reducing head can be replaced with a corresponding model according to the different models of valve cores. The position of the support leg limit adjusting nut 13 is adjusted, and the support leg limit fixing nut 15 is fixed to complete the adjustment of the four support legs 14 to different lengths. An anti-rotation rod is inserted into the anti-rotation hole 6 to prevent the valve-pulling screw 5 from rotating. The connector 18 or the reducing head 19 is connected to the booster pump valve core. After connection, the booster rod 7 is rotated to make the turntable 2 and the rotor 3 rotate, which drives the valve-pulling screw 5 to rise, so that the valve can be pulled out.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A pump pull valve tool for a stimulation pump, comprising a pull valve tool body having a central bore, wherein, A rotor is installed in the central hole of the valve removal tool body. The rotor has an axial through hole in the middle. A valve removal screw is installed in the central through hole. The valve removal screw and the rotor are connected by a thread. The lower end of the valve removal screw is provided with a connector for connecting to the valve core of the injection pump. The rotor is installed inside the valve removal tool body by a stop cap to prevent it from falling off. A turntable is fixedly connected to the outer wall of the rotor.

2. The pump pull valve tool of claim 1, wherein, The valve-pulling tool body is equipped with rollers and steel rings, which cooperate to form a bearing mechanism, which is installed below the rotor.

3. The pump pull valve tool of claim 1, wherein, The rotor is a two-layered frustum structure, with the diameter of the lower frustum being larger than that of the upper frustum. The stop cap is fitted onto the upper end of the lower frustum.

4. The pump pull valve tool of claim 3, wherein, The turntable is mounted on the outer wall of the upper frustum of the rotor.

5. The pump pull valve tool of claim 4, wherein, An assist rod is installed on the outer wall of the turntable, and the assist rod is threadedly connected to the turntable.

6. The injection pump valve removal tool according to claim 1, characterized in that, The stop cap is fixedly connected to the valve-pulling tool body by screws.

7. The pump pull valve tool of claim 1, wherein, A support leg is installed on the valve-pulling tool body. The support leg is inserted into a hole on the valve-pulling tool body. Nuts are provided at both ends of the hole on the valve-pulling tool body. The support leg is fastened to the valve-pulling tool body through the nuts at both ends of the hole on the valve-pulling tool body.

8. The pump pull valve tool of claim 7, wherein, The outrigger is connected to a foot, and the foot and the outrigger are connected by a universal joint.

9. The pump pull valve tool of claim 1, wherein, The injector pump valve removal tool is also equipped with a reducing head, which has a central hole. The inner wall of the central hole of the reducing head has an internal thread for connecting with the connector, and the outer wall surface of the reducing head has an external thread for connecting with the injector pump valve core.

10. The pump pull valve tool of claim 1, wherein, The valve-pulling screw has a mounting hole at its top for preventing the valve-pulling screw from rotating.

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