Plunger cavity copper bush disassembling and assembling device

Abstract

The utility model discloses a plunger cavity copper bush dismounting device which comprises a supporting frame (1), a handle assembly (2) is rotationally installed on the supporting frame (1), one end of a driving rod (4) is in threaded connection with the handle assembly (2), and the other end of the driving rod (4) is fixedly connected with a clamping block (5). The plunger cavity copper bush assembling and disassembling device can achieve integration of assembling and disassembling of the plunger cavity copper bush, is convenient to use, enables the plunger cavity copper bush to be evenly stressed, and can guarantee coaxiality and straightness of assembling and disassembling of the plunger cavity copper bush.

Description

Technical Field

[0001] The utility model relates to a disassembly and assembly device, in particular to a plunger cavity copper sleeve disassembly and assembly device. Background Art

[0002] Under high temperature and high pressure working conditions, scale will form on the inner wall of the plunger cavity, affecting the performance of the plunger. When replacing the packing or copper sleeve, the scale increases friction and makes it difficult to remove it.

[0003] In order to facilitate maintenance personnel to inspect, repair and replace the copper sleeve, the existing copper sleeve disassembly device using knocking is used as an auxiliary tool. However, in actual use, the use of the knocking device to disassemble and assemble will affect the coaxiality of the copper sleeve and the plunger cavity, and the change of knocking force will cause uneven force on the copper sleeve, which will cause the copper sleeve to deform during the disassembly and assembly process, and the sealing effect will be deteriorated. Utility Model Content

[0004] The purpose of the utility model is to provide a plunger cavity copper sleeve disassembly and assembly device to solve the technical problems in the prior art. The utility model can realize the integrated disassembly and assembly of the plunger cavity copper sleeve, is easy to use, and makes the plunger cavity copper sleeve evenly stressed, and the coaxiality and straightness of the disassembly and assembly of the plunger cavity copper sleeve can be guaranteed.

[0005] The utility model provides a plunger cavity copper sleeve disassembly and assembly device, comprising a support frame, on which a handle assembly is rotatably mounted, one end of a driving rod is threadedly connected to the handle assembly, and the other end of the driving rod is fixedly connected to a clamping block.

[0006] In the aforementioned plunger chamber copper sleeve disassembly and assembly device, preferably, the support frame includes a plunger pump connecting plate and a mounting rod, the mounting rod is fixedly arranged at the middle position of one side of the plunger pump connecting plate, a mounting hole is provided on the mounting rod, the handle assembly is rotatably connected to the mounting hole, a first through hole is provided at the center position of the plunger pump connecting plate, the mounting hole is coaxial with the first through hole, and a second through hole is respectively provided at the four corners of the plunger pump connecting plate.

[0007] In the aforementioned plunger chamber copper sleeve disassembly and assembly device, preferably, the mounting rod is composed of two vertical rods and a horizontal rod, the two vertical rods are vertically fixed on the plunger pump connecting plate, the two ends of the horizontal rod are respectively fixedly connected to the two vertical rods, the horizontal rod is parallel to the plunger pump connecting plate, and the mounting hole is opened in the middle position of the horizontal rod.

[0008] In the aforementioned plunger cavity copper sleeve disassembly and assembly device, preferably, an open groove is formed at one end of the drive rod connected to the handle assembly, and a rectangular plate is fixed between the two vertical rods, and the rectangular plate passes through the open groove.

[0009] In the aforementioned plunger cavity copper sleeve disassembly and assembly device, preferably, the handle assembly includes a tube body, the lower end of the tube body is plug-connected to the mounting hole, a first limiting ring is formed on the outer wall of the tube body, a second limiting ring is welded and fixed to the lower end of the tube body, the cross bar is located between the first limiting ring and the second limiting ring, two handle rods are symmetrically fixed on the outer wall of the upper end of the tube body, and a thread is formed on the inner wall of the tube body.

[0010] In the aforementioned plunger cavity copper sleeve disassembly and assembly device, preferably, the clamping block is a cylindrical structure, a boss is formed on the outer wall of the clamping block, the diameter of the boss is larger than the inner diameter of the copper sleeve and smaller than the diameter of the plunger cavity, and the clamping block and the copper sleeve are gap-matched.

[0011] Compared with the prior art, the utility model includes a support frame, on which a handle assembly is rotatably mounted, one end of a driving rod is threadedly connected to the handle assembly, and a clamping block is rotatably mounted on the other end of the driving rod. The utility model can be fixedly connected to the end cover of the plunger pump through the support frame, so that the driving rod is coaxial with the plunger cavity. In this way, when the driving rod is raised or lowered by the handle assembly, the coaxiality of the clamping block and the copper sleeve can be ensured, and the copper sleeve can be pushed out of the plunger cavity to realize the removal of the copper sleeve or pulled into the plunger cavity to realize the installation of the copper sleeve. The utility model can effectively protect the copper sleeve and the plunger cavity whether the copper sleeve is removed or installed, and prevent the two from being damaged. It not only improves the efficiency of disassembly and assembly, but also effectively ensures the sealing effect of the copper sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric drawing of the utility model;

[0013] Figure 2 is an axonometric view of the support frame and handle assembly;

[0014] Figure 3 It is an axonometric view of the drive rod.

[0015] Explanation of the accompanying drawings: support frame 1, handle assembly 2, third through hole 3, drive rod 4, block 5, plunger pump connecting plate 6, mounting rod 7, mounting hole 8, first through hole 9, second through hole 10, tube body 11, first limiting ring 12, second limiting ring 13, handle rod 14, boss 15, opening groove 16, rectangular plate 17. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0017] Embodiment 1 of the present utility model: Figure 1-Figure 3 As shown, a plunger cavity copper sleeve disassembly and assembly device includes a support frame 1, a handle assembly 2 is rotatably mounted on the support frame 1, one end of a drive rod 4 is threadedly connected to the handle assembly 2, and the other end of the drive rod 4 is fixedly connected to a clamping block 5.

[0018] The support frame 1 is used to be fixedly connected with the end cover of the plunger pump, so that the driving rod 4 is coaxial with the plunger cavity of the plunger pump, and the position of the driving rod 4 is changed by the handle assembly 2, and the copper sleeve in the plunger cavity is pushed by the clamping block 5 to realize the disassembly function, or the copper sleeve is pulled by the clamping block 5 to realize the installation function of the copper sleeve. In this embodiment, the diameter of the clamping block 5 is equal to the inner diameter of the plunger cavity. In this way, the coaxiality and straightness of the copper sleeve can be ensured.

[0019] Specifically, the support frame 1 includes a plunger pump connecting plate 6 and a mounting rod 7. The mounting rod 7 is fixed at the middle position of one side of the plunger pump connecting plate 6. A mounting hole 8 is opened on the mounting rod 7. The handle assembly 2 is rotatably connected to the mounting hole 8. A first through hole 9 is opened at the center position of the plunger pump connecting plate 6. The mounting hole 8 is coaxial with the first through hole 9. A second through hole 10 is opened on each of the four corners of the plunger pump connecting plate 6.

[0020] The plunger pump connecting plate 6 is fixedly connected to the plunger pump end cover by four bolts passing through the four second through holes 10 on the plunger pump connecting plate 6, and the plunger pump connecting plate 6 is fixed to the plunger pump end cover. The function of the mounting rod 7 is to install the handle assembly 2. The handle assembly 2 can rotate on the mounting rod 7 but cannot be removed from the mounting rod 7.

[0021] Furthermore, the mounting rod 7 is composed of two vertical rods and a horizontal rod. The two vertical rods are vertically fixed on the plunger pump connecting plate 6. The two ends of the horizontal rod are respectively fixedly connected to the two vertical rods. The horizontal rod is parallel to the plunger pump connecting plate 6. The mounting hole 8 is opened in the middle position of the horizontal rod.

[0022] An open slot 16 is formed at one end of the driving rod 4 connected to the handle assembly 2 , and a rectangular plate 17 is fixed between the two vertical rods, and the rectangular plate 17 passes through the open slot 16 .

[0023] The thickness of the rectangular plate 17 is equal to the opening width of the opening slot 16 . Through the cooperation between the rectangular plate 17 and the opening slot 16 , the driving rod 4 can only move along the axial direction but cannot rotate.

[0024] Furthermore, the handle assembly 2 includes a tube body 11, the lower end of the tube body 11 is plugged into the mounting hole 8, a first limiting ring 12 is formed on the outer wall of the tube body 11, a second limiting ring 13 is welded and fixed to the lower end of the tube body 11, a cross bar is located between the first limiting ring 12 and the second limiting ring 13, two handle rods 14 are symmetrically fixed on the outer wall of the upper end of the tube body 11, and a thread is formed on the inner wall of the tube body 11.

[0025] When installing the handle assembly 2, the tube body 11 is plugged and connected with the mounting hole 8, so that the first limiting ring 12 contacts the top surface of the cross bar, and then the second limiting ring 13 is sleeved on the tube body 11, so that the second limiting ring 13 contacts the bottom surface of the cross bar, and then the second limiting ring 13 is welded and fixed to the tube body 11. In order for the handle assembly 2 to rotate smoothly, the spacing between the first limiting ring 12 and the second limiting ring 13 is slightly larger than the thickness of the cross bar, and the outer diameter of the tube body 11 is slightly smaller than the diameter of the mounting hole 8. The outer wall of the driving rod 4 has threads, and the driving rod 4 is threadedly connected to the tube body 11.

[0026] Embodiment 2 of the present utility model: The difference between this embodiment and embodiment 1 is only that the structure of the block 5 is different. In this embodiment, the block 5 is a cylindrical structure, and a boss 15 is formed on the outer wall of the block 5. The diameter of the boss 15 is larger than the inner diameter of the copper sleeve and smaller than the diameter of the plunger cavity. The block 5 and the copper sleeve are clearance-matched. In this embodiment, the diameter of the boss 15 is preferably designed to be 1 mm smaller than the diameter of the plunger cavity.

[0027] The clamping block 5 in this embodiment can be plugged into and matched with the copper sleeve, and the boss 15 on the clamping block 5 is used to push or pull the copper sleeve. This solution can further improve the coaxiality and straightness of the clamping block 5 and the copper sleeve.

[0028] The working principle of the utility model is as follows: when removing the copper sleeve, the tube body 11 is rotated by the handle rod 14 to make the driving rod 4 rise, and then the block 5 is inserted into the copper sleeve to make the boss 15 on the block 5 contact with the end of the copper sleeve, and then the tube body 11 is continued to be rotated to make the plunger pump connecting plate 6 contact with the plunger pump end cover, and four bolts are used to pass through the second through hole 10 and threadedly connected with the plunger pump end cover. After fixing the plunger pump connecting plate 6, the tube body 11 is rotated in the opposite direction to make the driving rod 4 descend, and the copper sleeve is pressed down by the boss 15. Since the block 5 and the boss 15 are coaxial with the copper sleeve, the copper sleeve is evenly thrust until the copper sleeve is pushed out of the plunger cavity.

[0029] When installing the copper sleeve, first completely remove the drive rod 4, connect the copper sleeve to the drive rod 4, and make the upper end of the block 5 plug and match with the copper sleeve, support the copper sleeve through the boss 15, fix the plunger pump connecting plate 6 to the plunger pump end cover by bolts, and then insert the drive rod 4 from the bottom of the plunger cavity and install it on the tube body 11, rotate the tube body 11 to make the drive rod 4 rise with the block 5 and the boss 15, and slowly pull the copper sleeve into the plunger cavity. After the copper sleeve is installed in place, remove the drive rod 4 from the tube body 11, and remove the block 5, the boss 15 and the drive rod 4 from the copper sleeve.

[0030] The above describes in detail the structure, features and effects of the utility model based on the embodiments shown in the drawings. The above is only a preferred embodiment of the utility model, but the utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the utility model, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and the drawings, should be within the protection scope of the utility model.

Claims

1. A plunger cavity copper sleeve disassembly and assembly device, comprising a support frame (1), characterized in that: A handle assembly (2) is rotatably mounted on the support frame (1); one end of a driving rod (4) is threadedly connected to the handle assembly (2); and the other end of the driving rod (4) is fixedly connected to a clamping block (5); The support frame (1) comprises a plunger pump connecting plate (6) and a mounting rod (7), wherein the mounting rod (7) is fixedly arranged at a middle position on one side of the plunger pump connecting plate (6), a mounting hole (8) is provided on the mounting rod (7), the handle assembly (2) is rotatably connected to the mounting hole (8), a first through hole (9) is provided at a central position of the plunger pump connecting plate (6), the mounting hole (8) is coaxial with the first through hole (9), and a second through hole (10) is provided at each of the four corners of the plunger pump connecting plate (6).

2. The plunger cavity copper sleeve disassembly and assembly device according to claim 1, characterized in that: The mounting rod (7) is composed of two vertical rods and a horizontal rod. The two vertical rods are vertically fixed on the plunger pump connecting plate (6). The two ends of the horizontal rod are respectively fixedly connected to the two vertical rods. The horizontal rod is parallel to the plunger pump connecting plate (6). The mounting hole (8) is opened in the middle position of the horizontal rod.

3. The plunger cavity copper sleeve disassembly and assembly device according to claim 2, characterized in that: An open slot (16) is formed at one end of the driving rod (4) connected to the handle assembly (2), and a rectangular plate (17) is fixed between the two vertical rods, and the rectangular plate (17) passes through the open slot (16).

4. The plunger cavity copper sleeve disassembly and assembly device according to claim 3, characterized in that: The handle assembly (2) comprises a tube body (11), the lower end of the tube body (11) is plug-connected with the mounting hole (8), a first limiting ring (12) is formed on the outer wall of the tube body (11), a second limiting ring (13) is welded and fixed to the lower end of the tube body (11), the cross bar is located between the first limiting ring (12) and the second limiting ring (13), two handle rods (14) are symmetrically fixed on the outer wall of the upper end of the tube body (11), and a thread is formed on the inner wall of the tube body (11).

5. The plunger cavity copper sleeve disassembly and assembly device according to claim 4, characterized in that: The clamping block (5) is a cylindrical structure, and a boss (15) is formed on the outer wall of the clamping block (5). The diameter of the boss (15) is larger than the inner diameter of the copper sleeve and smaller than the diameter of the plunger cavity. The clamping block (5) is clearance-matched with the copper sleeve.

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