A sliding valve pulling tool

Abstract

The utility model discloses a kind of slide valve pulling-out tool, belong to slide valve dismounting tool technical field.The tool includes pull rod and drawing assembly, the pull rod is sequentially provided with tensioning drive assembly, sleeve and expansion sleeve in axial direction, the tensioning drive assembly is threadedly connected with pull rod, the sleeve is slidably connected with pull rod, and pull rod only has the freedom of moving along axial direction relative to sleeve, the drawing assembly is sleeved on the sleeve, and is threadedly connected with the sleeve.The threaded connection relationship of drawing assembly and sleeve is used, slide valve is pulled out from shell, and dismounting efficiency is high.

Description

Technical Field

[0001] This utility model relates to a tooling for removing and disassembling a slide valve, belonging to the technical field of slide valve disassembly tools. Background Technology

[0002] Most electric valves use a spool valve structure. When disassembling or repairing an electric valve, disassembly tools are needed to pull the spool valve out of the housing.

[0003] Chinese patent document CN205651288U discloses a disassembly tool for a slide valve bushing of a fuel component in a civil aircraft. The tool includes: a circular tube with a boss at its upper end and a rotating handle symmetrically positioned on the outer circumference of the boss; a threaded hole at the upper end of the tube and several axially elongated notches evenly distributed on the lower end wall; the opening of the lower end of the tube is a tapered opening, wider inside and narrower outside, fitted with a ball bearing a diameter larger than the narrow end of the tapered opening; a push rod, the lower end of which inserts into the inner hole of the circular tube to hold the ball bearing, and the upper end having an external thread that engages with the upper threaded hole of the circular tube; a boss at the very top of the push rod, with an axially threaded hole at the top of the boss; and a striker, the upper end of which has a boss, the lower end having a threaded hole that engages with the threaded hole at the top of the push rod, and the middle being a smooth rod with a striker having a central opening. Using this disassembly tool not only ensures that the sealing ring is not damaged during disassembly but also eliminates the need for other tools and is easy to operate.

[0004] When using the aforementioned disassembly tools to remove the slide valve from the housing, first insert the end of the round tube equipped with ball bearings into the inner hole of the slide valve. Then, using the threaded engagement between the push rod and the round tube, tighten the push rod to push the ball bearings open, causing the round tube to clamp the slide valve. Next, strike the upper end of the impact rod upwards with a hammer to gradually pull the slide valve out of the housing. However, the process of using a hammer to strike the upper end of the impact rod to pull the slide valve out of the housing is time-consuming and laborious, resulting in low disassembly efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a tooling for removing and unloading a slide valve.

[0006] This utility model is achieved through the following technical solution: A slide valve removal tool includes a pull rod and a pulling assembly. The pull rod is provided with a tension drive assembly, a sleeve and a tension sleeve in sequence along the axial direction. The tension drive assembly is threadedly connected to the pull rod. The sleeve is slidably connected to the pull rod, and the pull rod has only one degree of freedom of movement along the axial direction relative to the sleeve. The pulling assembly is fitted onto the sleeve and is threadedly connected to the sleeve.

[0007] Both ends of the expansion sleeve are provided with inner conical surfaces, and the small ends of the inner conical surfaces at both ends of the expansion sleeve are close to each other. Multiple slots A are evenly distributed at both ends of the expansion sleeve in the circumferential direction.

[0008] One end of the pull rod is provided with an outer conical surface A, and the outer conical surface A is in contact with the inner conical surface of the expansion sleeve that is away from the sleeve.

[0009] The sleeve has an outer conical surface B near the expansion sleeve end, and the outer conical surface B is in contact with the inner conical surface of the expansion sleeve near the sleeve.

[0010] The outer circle of the pull rod is provided with a sliding groove along the axial direction, and the sleeve is provided with a threaded hole along the radial direction. A limit pin is connected to the threaded hole, one end of which extends into the sliding groove, and the diameter of the limit pin is adapted to the width of the sliding groove.

[0011] The tensioning drive assembly includes a nut, which is threadedly connected to the tie rod, and has two pins on it.

[0012] The nut has two through holes along the radial direction, and the two through holes are arranged coaxially. One end of each of the two pins is inserted into the two through holes, and they are either transitionally fitted or interference-fitted with the through holes.

[0013] The drawing assembly includes a threaded sleeve and a positioning sleeve. The threaded sleeve is threadedly connected to the sleeve, and the positioning sleeve is movably fitted onto the sleeve and located on the side of the threaded sleeve closer to the expansion sleeve.

[0014] The threaded sleeve has multiple handles evenly distributed in the circumferential direction.

[0015] One end of the positioning sleeve is provided with a round hole, and the round hole is in clearance fit with the sleeve. The positioning sleeve is provided with a bushing receiving cavity, and two slots B are evenly distributed in the circumferential direction on the end of the positioning sleeve away from the round hole.

[0016] The beneficial effects of this utility model are: by utilizing the threaded connection between the pull assembly and the sleeve, the slide valve can be pulled out of the housing in a time-saving and labor-saving manner, resulting in high disassembly efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model after the handle is removed; Figure 2 This is a front view of the expansion sleeve of this utility model; Figure 3 for Figure 2 Sectional view along AA; Figure 4 This is a right view of the expansion sleeve of this utility model; Figure 5 This is a front view of the pull rod of this utility model; Figure 6 This is a schematic diagram of the sleeve structure of this utility model; Figure 7 This is a schematic diagram of the positioning sleeve of this utility model; Figure 8 for Figure 7The left view; Figure 9 This is a schematic diagram of the handle of this utility model.

[0018] In the diagram: 1-expansion sleeve, 11-slot A, 12-inner conical surface, 2-pull rod, 21-slide groove, 22-outer conical surface A, 3-sleeve, 31-outer conical surface B, 32-threaded hole, 4-positioning sleeve, 41-shoulder receiving cavity, 42-slot B, 43-round hole, 5-threaded sleeve, 6-limiting pin, 7-nut, 8-pin, 9-handle. Detailed Implementation

[0019] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0020] like Figures 1 to 9 As shown, the present invention provides a valve removal tooling, comprising a pull rod 2 and a pulling assembly. The pull rod 2 is axially arranged with a tensioning drive assembly, a sleeve 3, and a tension sleeve 1. The tensioning drive assembly is threadedly connected to the pull rod 2, and the sleeve 3 is slidably connected to the pull rod 2. The pull rod 2 has only one degree of freedom of movement relative to the sleeve 3, moving axially. The pulling assembly is fitted onto the sleeve 3 and threadedly connected to it. When the valve needs to be removed from the housing, the tension sleeve 1 of the tooling is first inserted into the valve's inner hole. Then, the tensioning drive assembly is rotated, causing the pull rod 2 to move axially away from the tension sleeve 1 relative to the valve, gradually expanding the tension sleeve 1 and tightening the valve. Next, the pulling assembly is rotated, causing it to move axially towards the housing along the sleeve 3. When the pulling assembly contacts the housing, the pulling assembly is rotated further. The housing, through the pulling assembly, sleeve 3, tensioning drive assembly, and pull rod 2, exerts a reaction force on the tension sleeve 1, thereby pulling the tension sleeve 1 and the valve out of the housing together. By utilizing the threaded connection between the pull assembly and the sleeve 3, the slide valve can be pulled out of the housing in a time-saving and labor-saving manner, resulting in high disassembly efficiency.

[0021] Both ends of the expansion sleeve 1 are provided with inner conical surfaces 12, and the small ends of the inner conical surfaces 12 at both ends of the expansion sleeve 1 are close to each other. Both ends of the expansion sleeve 1 are provided with multiple slots A11 evenly distributed in the circumferential direction.

[0022] One end of the pull rod 2 is provided with an outer conical surface A22, and the outer conical surface A22 is in contact with the inner conical surface 12 on the expansion sleeve 1 that is away from the sleeve 3.

[0023] The sleeve 3 has an outer conical surface B31 at one end near the expansion sleeve 1, and the outer conical surface B31 is in contact with the inner conical surface 12 of the expansion sleeve 1 near the sleeve 3.

[0024] The outer circumference of the pull rod 2 is provided with a groove 21 along the axial direction, and the sleeve 3 is provided with a threaded hole 32 along the radial direction. A limiting pin 6 is threaded into the threaded hole 32, and one end of the limiting pin 6 extends into the groove 21, and the diameter of the limiting pin 6 is adapted to the width of the groove 21. The limiting pin 6 restricts the circumferential degree of freedom of the pull rod 2, so that the pull rod 2 only has the axial degree of freedom relative to the sleeve 3.

[0025] The tensioning drive assembly includes a nut 7, which is threadedly connected to the pull rod 2, and the nut 7 is provided with two pins 8.

[0026] The nut 7 has two through holes arranged radially and coaxially. One end of each of the two pins 8 is inserted into the two through holes, and they are either transition-fitted or interference-fitted with the through holes. This allows the pins 8 to be held by hand to rotate the nut 7.

[0027] The pulling assembly includes a threaded sleeve 5 and a positioning sleeve 4. The threaded sleeve 5 is threadedly connected to the sleeve 3, and the positioning sleeve 4 is movably fitted onto the sleeve 3 and located on the side of the threaded sleeve 5 near the expansion sleeve 1.

[0028] Multiple handles 9 are evenly distributed circumferentially on the threaded sleeve 5.

[0029] One end of the positioning sleeve 4 is provided with a circular hole 43, and the circular hole 43 is clearance-fitted with the sleeve 3. The positioning sleeve 4 is provided with a bushing receiving cavity 41, and two slots B42 are evenly distributed in the circumferential direction on the end of the positioning sleeve 4 away from the circular hole 43. The bushing receiving cavity 41 is provided in the positioning sleeve 4 to facilitate the movement of the slide valve bushing in the slide valve through the bushing receiving cavity 41 during the process of pulling the slide valve out of the housing, so as to avoid interference between the slide valve bushing and the positioning sleeve 4.

[0030] The working principle of the slide valve removal tool described in this utility model is as follows: When it is necessary to remove the slide valve from the housing, first insert the expansion sleeve 1 of the tool into the inner hole of the slide valve, then hold the two pins 8 and rotate the nut 7 to pull the pull rod 2 axially away from the expansion sleeve 1, thereby gradually expanding the expansion sleeve 1 and tightening the slide valve. Then, hold the handle 9 and rotate the screw sleeve 5 to push the positioning sleeve 4 axially towards the housing along the sleeve 3. When the positioning sleeve 4 contacts the housing, continue to rotate the screw sleeve 5 using the handle 9. The housing reacts to the expansion sleeve 1 through the positioning sleeve 4, screw sleeve 5, sleeve 3, nut 7 and pull rod 2, thereby pulling the expansion sleeve 1 and the slide valve out of the housing together.

Claims

1. A tooling for removing and unloading a slide valve, characterized in that: The assembly includes a pull rod (2) and a pulling component. The pull rod (2) is provided with a tension drive component, a sleeve (3) and a tension sleeve (1) in sequence along the axial direction. The tension drive component is threadedly connected to the pull rod (2). The sleeve (3) is slidably connected to the pull rod (2). The pull rod (2) has only the axial movement degree of freedom relative to the sleeve (3). The pulling component is fitted on the sleeve (3) and threadedly connected to the sleeve (3).

2. The slide valve removal tooling as described in claim 1, characterized in that: Both ends of the expansion sleeve (1) are provided with inner conical surfaces (12), and the small ends of the inner conical surfaces (12) at both ends of the expansion sleeve (1) are close to each other. Both ends of the expansion sleeve (1) are provided with multiple slots A (11) evenly distributed in the circumferential direction.

3. The slide valve removal tooling as described in claim 2, characterized in that: One end of the pull rod (2) is provided with an outer conical surface A (22), and the outer conical surface A (22) is in contact with the inner conical surface (12) on the expansion sleeve (1) that is away from the sleeve (3).

4. The slide valve removal tooling as described in claim 2, characterized in that: The sleeve (3) has an outer conical surface B (31) at one end near the expansion sleeve (1), and the outer conical surface B (31) is in contact with the inner conical surface (12) of the expansion sleeve (1) near the sleeve (3).

5. The slide valve removal tooling as described in claim 1, characterized in that: The pull rod (2) has a groove (21) along the axial direction on the outer circle, and the sleeve (3) has a threaded hole (32) along the radial direction. The threaded hole (32) is connected to a limit pin (6) by a thread. One end of the limit pin (6) extends into the groove (21), and the diameter of the limit pin (6) is adapted to the width of the groove (21).

6. The slide valve removal tooling as described in claim 1, characterized in that: The tensioning drive assembly includes a nut (7), which is threadedly connected to the pull rod (2), and the nut (7) is provided with two pins (8).

7. The slide valve removal tooling as described in claim 6, characterized in that: The nut (7) has two through holes along the radial direction, and the two through holes are arranged coaxially. One end of each of the two pins (8) is inserted into the two through holes and is either transitionally fitted or interference-fitted with the through holes.

8. The slide valve removal tooling as described in claim 1, characterized in that: The pulling assembly includes a threaded sleeve (5) and a positioning sleeve (4). The threaded sleeve (5) is threadedly connected to the sleeve (3). The positioning sleeve (4) is movably fitted onto the sleeve (3) and is located on the side of the threaded sleeve (5) near the expansion sleeve (1).

9. The slide valve removal tooling as described in claim 8, characterized in that: Multiple handles (9) are evenly distributed in the circumferential direction on the threaded sleeve (5).

10. The slide valve removal tooling as described in claim 8, characterized in that: One end of the positioning sleeve (4) is provided with a round hole (43), and the round hole (43) is in clearance fit with the sleeve (3). The positioning sleeve (4) is provided with a bushing receiving cavity (41), and two slots B (42) are evenly distributed in the circumferential direction on the end of the positioning sleeve (4) away from the round hole (43).

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