Air valve dismounting tool of reciprocating compressor

Abstract

The utility model discloses an air valve dismounting tool of a reciprocating compressor, and belongs to the technical field of maintenance tools. An air valve disassembling and assembling tool of a reciprocating compressor comprises a first cylinder body, a driving bolt and telescopic cylinders are arranged at the top of the first cylinder body, the two telescopic cylinders are communicated with the first cylinder body and located on the two sides of an air valve cover, and clamping blocks clamped into a gap between the air valve cover and an air valve seat are arranged on the side walls, close to the air valve cover, of the telescopic cylinders. A first piston is arranged on the inner side of the first cylinder body, the top of the first piston is rotationally connected with a driving bolt, the driving bolt is in threaded connection with the first cylinder body, and the bottom of the inner side of the first cylinder body communicates with the telescopic cylinder through a communicating pipe; the tool has the advantages that the air valve cover is convenient to disassemble and assemble, and the number of used tools is reduced.

Description

Technical Field

[0001] This utility model relates to the field of maintenance tool technology, and in particular to a valve disassembly and assembly tool for a reciprocating compressor. Background Technology

[0002] In a reciprocating compressor, the air valve is a core component controlling the compressor's intake air volume. The working state of the air valve directly affects the compressor's performance indicators such as volumetric flow rate and energy consumption. When the air valve performs well, the compressor can operate efficiently and stably, achieving good gas compression and reducing energy consumption.

[0003] The valve is one of the vulnerable parts of a reciprocating compressor. Statistics show that over 60% of reciprocating compressor failures originate from the valve system. Valve failures mainly manifest as valve plate damage, spring breakage, and valve leakage. These three types of failures are often interrelated. Valve plate damage can lead to valve leakage, while spring breakage increases the impact speed and force of the valve plate against the valve stop and valve seat, causing the valve plate to shatter. When the compressor experiences a decrease in discharge volume, an increase in valve cover temperature, large fluctuations in outlet pressure, or abnormal pressure differences, the valve is usually checked first, and then the appropriate internal components are considered for replacement or repair.

[0004] However, due to the sealing requirements of the valve itself, the valve cover and valve seat are tightly fitted. When inspecting and disassembling, two pry bars are needed. The pry bars are plugged into the gap between the valve cover and valve seat from both sides, and then the valve cover is slowly pried up and removed from the valve seat. The whole process is time-consuming and laborious. In particular, there are multiple valves on a reciprocating compressor, and the valve cover disassembly work takes up a lot of maintenance time. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that valve cover disassembly work consumes a lot of maintenance time when disassembling the valves of reciprocating compressors in the prior art, and to propose a valve disassembly and assembly tool for reciprocating compressors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A valve disassembly and assembly tool for a reciprocating compressor, including

[0008] The first cylinder block has a drive bolt on its top.

[0009] The telescopic cylinders are connected to the first cylinder body and are located on both sides of the valve cover. The telescopic cylinders are provided with a locking block on the side wall near the valve cover that can be inserted into the gap between the valve cover and the valve seat.

[0010] Furthermore, a first piston is provided on the inner side of the first cylinder body, and a drive bolt is rotatably connected to the top of the first piston. The drive bolt is screwed to the first cylinder body, and the bottom inner side of the first cylinder body is connected to the telescopic cylinder through a connecting pipe.

[0011] Furthermore, a second piston is provided inside the telescopic cylinder, and a telescopic rod is provided at the bottom of the second piston. The telescopic rod is telescopically installed inside the telescopic cylinder, and a pad is provided at the bottom of the telescopic rod.

[0012] Furthermore, the telescopic cylinder has a snap-fit ​​groove on the side wall near the valve cover, and a snap-fit ​​block is rotatably installed on the inner side of the snap-fit ​​groove. The end face of the snap-fit ​​block near the valve cover has a V-shaped protrusion corresponding to the first chamfer.

[0013] Furthermore, a rotating shaft is provided at the bottom of the card block, and the card block and the carding groove are rotatably connected through the rotating shaft.

[0014] Furthermore, a spring is provided on the side of the locking block away from the valve cover, and the locking block is connected to the locking groove by the spring.

[0015] Furthermore, a limiting structure corresponding to the first through hole is provided on one side of the first cylinder body.

[0016] Furthermore, the limiting structure includes a vertical rod corresponding to the first through hole, and the vertical rod is connected to the first cylinder body by a horizontal rod.

[0017] Furthermore, one end of the crossbar is connected to the first cylinder body, and the other end is detachably connected to the vertical bar.

[0018] Furthermore, the specifications of the drive bolt are the same as those of the first bolt.

[0019] Compared with the prior art, this utility model provides a valve disassembly and assembly tool for a reciprocating compressor, which has the following beneficial effects:

[0020] This utility model discloses a valve disassembly and assembly tool for a reciprocating compressor. In use, first remove the first bolt on the valve cover, then press this device onto the valve cover, causing the locking blocks on the telescopic cylinders on both sides to engage in the gap between the valve cover and the valve seat. Then, turn the drive bolt to move the first cylinder, which in turn moves the telescopic cylinder, causing its working end to extend and press against the outer casing of the reciprocating compressor, thus lifting the valve cover upwards. This replaces the existing method of using two pry bars to disassemble the valve cover, making the operation simpler and faster.

[0021] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a three-dimensional schematic diagram showing the overall effect of the present invention in conjunction with the outer seat of the valve.

[0024] Figure 3 This is a front view schematic diagram showing the overall fit between the present invention and the outer seat of the valve.

[0025] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model from the front view direction;

[0026] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of section A in the middle;

[0027] Figure 6 A schematic diagram illustrating the overall structure of this utility model when used in a reciprocating compressor.

[0028] Figure 7 This is a schematic diagram of the limiting structure of Embodiment 2 of this utility model.

[0029] In the picture:

[0030] 1. First cylinder body; 101. First piston; 102. Connecting pipe; 2. Telescopic cylinder; 201. Second piston; 202. Pad; 203. Telescopic rod; 204. Snap-fit ​​groove; 205. Locking block; 206. V-shaped protrusion; 207. Spring; 208. Rotating shaft; 3. Limiting structure; 301. Horizontal bar; 302. Vertical bar; 303. Disassembly through hole; 4. Drive bolt; 5. Valve cover; 501. First through hole; 502. First bolt; 6. Valve seat; 601. First chamfer; 7. Reciprocating compressor. Detailed Implementation

[0031] 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.

[0032] Example 1

[0033] Reference Figures 1-6This utility model discloses a valve disassembly and assembly tool for a reciprocating compressor, including a first cylinder 1. A drive bolt 4 is installed on the top of the first cylinder 1. In use, the first piston 101 inside the first cylinder 1 is driven to move by the drive bolt 4.

[0034] Telescopic cylinder 2, two telescopic cylinders 2 are connected to the first cylinder body 1, and the first cylinder body 1 drives the two telescopic cylinders 2 to move. The two telescopic cylinders 2 are located on opposite sides of the valve cover 5. The telescopic cylinder 2 is equipped with a locking block 205 on the side wall near the valve cover 5 for locking into the gap between the valve cover 5 and the valve seat 6. A first chamfer 601 is processed on the bottom edge of the valve cover 5 and the top edge of the valve seat 6. The angle of the first chamfer 601 is not greater than 40°. The locking block 205 is mainly locked into the gap between the valve cover 5 and the valve seat 6 through the first chamfer 601.

[0035] After the locking block 205 is engaged with the first chamfer 601, the first cylinder 1 is driven to move by the driving bolt 4. The first cylinder 1 drives the two telescopic cylinders 2 to move. The working end of the telescopic cylinder 2 extends and abuts against the outer shell of the reciprocating compressor 7, pushing the device and the valve cover 5 upward together, so that the valve cover 5 is separated from the valve seat 6. Compared with the prior art, which requires two pry bars to pry the valve cover 5 from both sides during disassembly, the operation is much simpler.

[0036] A piston cylinder is machined on the inner side of the first cylinder body 1. A first piston 101 is slidably and sealed inside the piston cylinder. A drive bolt 4 is rotatably connected to the top of the first piston 101. The drive bolt 4 is screwed to the first cylinder body 1. The bottom inner side of the first cylinder body 1 is connected to the telescopic cylinder 2 through a connecting pipe 102. The space inside the first cylinder body 1 below the first piston 101 is filled with hydraulic oil. When the drive bolt 4 is turned, the drive bolt 4 drives the first piston 101 upward or downward. The first piston 101 slides inside the first cylinder body 1 and transmits pressure to the telescopic cylinder 2 through the hydraulic oil to drive the telescopic cylinder 2.

[0037] The telescopic cylinder 2 also has a piston cylinder inside, in which a second piston 201 is slidably and sealed. The hydraulic oil is located in the space above the second piston 201 and in communication with the connecting pipe 102. The bottom of the second piston 201 is connected to a telescopic rod 203, which is telescopically installed inside the telescopic cylinder 2. The bottom of the telescopic rod 203 is the working end of the telescopic cylinder 2, and a pad 202 is installed on the working end. When the hydraulic oil transmits pressure to the telescopic cylinder 2, the second piston 201 slides downward and the telescopic rod 203 extends. When the pad 202 moves downward and abuts against the outer casing of the reciprocating compressor 7, the device begins to move upward.

[0038] The telescopic cylinder 2 has a locking groove 204 machined on the side wall near the valve cover 5. The locking groove 204 is a recessed groove structure with an opening near the valve cover 5. A locking block 205 is rotatably installed on the inner side of the locking groove 204. The locking block 205 rotates in the direction of moving closer to or away from the valve cover 5. A V-shaped protrusion 206 corresponding to the first chamfer 601 is integrally formed on the end face of the locking block 205 near the valve cover 5. The angle of the tip of the V-shaped protrusion 206 is smaller than the included angle between the two first chamfers 601. When the device moves upward, the V-shaped protrusion 206 is locked between the two first chamfers 601, causing the valve cover 5 to move upward synchronously.

[0039] A rotating shaft 208 is installed at the bottom of the locking block 205. The locking block 205 and the locking groove 204 are rotatably connected through the rotating shaft 208. The locking block 205 is also inclined. Specifically, the top of the locking block 205 is closer to the valve cover 5 than the bottom. In this way, when the V-shaped protrusion 206 is engaged with the first chamfer 601, when the device continues to move downward, the valve seat 6 can push the V-shaped protrusion 206 outward. When the device moves upward, the V-shaped protrusion 206 abuts against the first chamfer 601 on the valve cover 5, so that the V-shaped protrusion 206 and the valve cover 5 are engaged.

[0040] A spring 207 is installed on the side of the locking block 205 away from the valve cover 5. The locking block 205 and the locking groove 204 are connected by the spring 207. When the spring 207 is in its natural state, the locking block 205 remains in an inclined state. When the device is fitted onto the valve cover 5, the V-shaped protrusion 206, under the elastic force of the spring 207, abuts against the side wall surface of the valve cover 5 and slides downward. When it slides to the first chamfer 601, the locking block 205, under the elastic force of the spring 207, drives the V-shaped protrusion 206 to automatically engage in the first chamfer 601 and makes a sound. The sound can indicate to the user that the V-shaped protrusion 206 has engaged in the first chamfer 601.

[0041] A limiting structure 3 corresponding to the first through hole 501 is installed on one side of the first cylinder 1. When the device is fitted onto the valve cover 5, the device is easily rotated passively when the drive bolt 4 is turned. The limiting structure 3 is used to lock the device into the first through hole 501 to prevent the device from rotating.

[0042] Specifically, a first through hole 501 is provided on the valve cover 5, and a bolt hole corresponding to the first through hole 501 is provided on the valve seat 6. When the valve cover 5 is installed, the first bolt 502 passes through the first through hole 501 and then engages with the bolt hole, thereby fastening the valve cover 5 onto the valve seat 6. When in use, the limiting structure 3 extends through the first through hole 501 into the bolt hole, thereby preventing the device and the valve cover 5 from rotating during disassembly.

[0043] The specifications of the drive bolt 4 are the same as those of the first bolt 502. Since there are specific requirements for the tightening degree of the first bolt 502 when installing the valve cover 5, a torque wrench is generally used to tighten the first bolt 502. Since the specifications of the drive bolt 4 are the same as those of the first bolt 502, a torque wrench can be used to tighten the drive bolt 4. The same disassembly tools are used as the first bolt 502, reducing the number of types of tools used.

[0044] Example 2

[0045] Reference Figure 7 This utility model discloses a valve disassembly and assembly tool for a reciprocating compressor. The difference between this embodiment and embodiment 1 is that the limiting structure 3 includes a vertical rod 302 corresponding to the first through hole 501. The vertical rod 302 is connected to the first cylinder 1 through a horizontal rod 301. In use, the device is put on the valve cover 5 from top to bottom. The telescopic cylinder 2 is located on both sides of the valve cover 5, and the vertical rod 302 extends into one of the first through holes 501 and the bolt hole to prevent the device from rotating during use.

[0046] One end of the horizontal bar 301 is connected to the first cylinder 1, and the other end is detachably connected to the vertical bar 302. Specifically, a disassembly through hole 303 is machined at the end of the horizontal bar 301 away from the first cylinder 1. The vertical bar 302 is movably inserted through the disassembly through hole 303. When the valve cover 5 is disassembled, the vertical bar 302 plays a limiting role. When the valve cover 5 is installed, the vertical bar 302 plays a guiding role, so that the first through hole 501 can be accurately aligned with the bolt hole.

[0047] Working principle: When using, first remove the first bolt 502 on the valve cover 5, then put this device on the valve cover 5, rotate this device so that the disassembly through hole 303 is aligned with one of the first through holes 501, then insert the vertical rod 302 into the disassembly through hole 303, the vertical rod 302 passes through the first through hole 501 and extends into the bolt hole of the valve seat 6.

[0048] After the V-shaped protrusion 206 is engaged with the first chamfer 601, the drive bolt 4 is turned using a torque wrench to remove the first bolt 502. The drive bolt 4 drives the first piston 101 to squeeze the hydraulic oil, which drives the telescopic cylinder 2, causing the telescopic rod 203 to extend and press against the outer casing of the reciprocating compressor 7. The drive bolt 4 is turned further, causing the device to raise the valve cover 5 synchronously until the valve cover 5 is moved out of the valve seat 6.

[0049] When installing the valve cover 5, first insert the vertical rod 302 into one of the bolt holes. Then, place the device and the valve cover 5 together on the valve seat 6, ensuring that the vertical rod 302 passes through the disassembly through hole 303. This aligns the first through hole 501 directly with the bolt hole on the valve seat 6. Press the valve cover 5 into the valve seat 6, then remove the vertical rod 302. Laterally (e.g., ...) Figure 3Move the device (perpendicular to the paper surface) so that the V-shaped protrusion 206 slides out along one side of the first chamfer 601 and the device is removed.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A valve disassembly and assembly tool for a reciprocating compressor, characterized in that, include The first cylinder (1) has a drive bolt (4) on its top. Telescopic cylinder (2), the two telescopic cylinders (2) are connected to the first cylinder body (1), the two telescopic cylinders (2) are located on both sides of the valve cover (5), and the telescopic cylinder (2) is provided with a locking block (205) on the side wall near the valve cover (5) to fit into the gap between the valve cover (5) and the valve seat (6).

2. The valve disassembly and assembly tool for a reciprocating compressor according to claim 1, characterized in that, The first piston (101) is provided on the inner side of the first cylinder (1). The top of the first piston (101) is rotatably connected to the drive bolt (4). The drive bolt (4) is screwed to the first cylinder (1). The bottom inner side of the first cylinder (1) is connected to the telescopic cylinder (2) through a connecting pipe (102).

3. The valve disassembly and assembly tool for a reciprocating compressor according to claim 2, characterized in that, The telescopic cylinder (2) is provided with a second piston (201) inside. The bottom of the second piston (201) is provided with a telescopic rod (203). The telescopic rod (203) is telescopically installed inside the telescopic cylinder (2). The bottom of the telescopic rod (203) is provided with a pad (202).

4. The valve disassembly and assembly tool for a reciprocating compressor according to claim 3, characterized in that, The telescopic cylinder (2) has a snap-fit ​​groove (204) on the side wall near the valve cover (5). A snap-fit ​​block (205) is rotatably installed on the inner side of the snap-fit ​​groove (204). A V-shaped protrusion (206) corresponding to the first chamfer (601) is provided on the end face of the snap-fit ​​block (205) near the valve cover (5).

5. The valve disassembly and assembly tool for a reciprocating compressor according to claim 4, characterized in that, The bottom of the card block (205) is provided with a rotating shaft (208), and the card block (205) and the card groove (204) are rotatably connected through the rotating shaft (208).

6. The valve disassembly and assembly tool for a reciprocating compressor according to claim 5, characterized in that, A spring (207) is provided on the side of the locking block (205) away from the valve cover (5), and the locking block (205) is connected to the locking groove (204) by the spring (207).

7. The valve disassembly and assembly tool for a reciprocating compressor according to claim 1, characterized in that, The first cylinder (1) has a limiting structure (3) on one side corresponding to the first through hole (501).

8. The valve disassembly and assembly tool for a reciprocating compressor according to claim 7, characterized in that, The limiting structure (3) includes a vertical rod (302) corresponding to the first through hole (501), and the vertical rod (302) is connected to the first cylinder (1) by a horizontal rod (301).

9. A valve disassembly and assembly tool for a reciprocating compressor according to claim 8, characterized in that, One end of the crossbar (301) is connected to the first cylinder (1), and the other end is detachably connected to the vertical bar (302).

10. A valve disassembly and assembly tool for a reciprocating compressor according to claim 1, characterized in that, The specifications of the drive bolt (4) are the same as those of the first bolt (502).

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