Special tools for repairing vacuum roots pump seal components

Abstract

The utility model relates to a special tool for repairing a sealing assembly of a vacuum Roots pump, comprising a pump body, a sealing device for repairing the pump body being arranged on the outside, the sealing device for repairing the pump body comprising a shaft sleeve and a skeleton oil seal, a shaft sleeve being arranged on the inside of the mounting sleeve, the skeleton oil seal being movably connected to the inside of the mounting sleeve, and a first sleeve being sleeved on the outer surface of the shaft sleeve. The special tool for repairing a sealing assembly of a vacuum Roots pump comprises the steps of first installing the skeleton oil seal into the inside of the mounting sleeve, then sleeve the first sleeve and the second sleeve into the outside of the shaft sleeve in sequence, pulling the movable rod inside the main frame, installing the main frame on the right side of the support ring through four limit rods, then loosening the movable rod, fixing the movable rod inside the limit rod through the action force of the spring body and the magnetic force of the first magnet and the second magnet, then rotating the handle and the screw rod, installing the device through the screw rod, thereby achieving the purpose of smoothly installing the repair tool.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum Roots pump sealing component repair, in particular to a special tool for repairing the vacuum Roots pump sealing component. Background Art

[0002] Special tools for repairing vacuum Roots pump seal components are mainly used to repair and replace the seal components of Roots pumps. These tools are specially designed to adapt to the maintenance work such as disassembly, installation and adjustment of Roots pump seal components. By using these special tools, maintenance personnel can perform maintenance tasks more efficiently and ensure maintenance quality and operational safety.

[0003] However, the installation of the existing special tools for repairing the sealing components of vacuum Roots pumps is mainly carried out by supporting with a metal rod, and then hammering by employees. This method is easy to deviate, thereby causing damage to the sealing ring and damage to the skeleton oil seal. It is not only time-consuming and labor-intensive, but also easy to cause damage to parts, resulting in increased operation and maintenance costs. Therefore, a special tool for repairing the sealing components of vacuum Roots pumps is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a special tool for repairing a vacuum Roots pump sealing assembly, which has the advantages of smoothly installing the repair tool and solves the problem that the prior repair tool needs to be hammered before it can be installed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special tool for repairing a vacuum Roots pump seal assembly, comprising a pump body, a mounting sleeve fixedly installed on the right side of the pump body, a repair-friendly sealing device arranged on the outside of the pump body, and a fixing device arranged on the outside of the pump body;

[0006] The easy-to-repair sealing device comprises a shaft sleeve, a skeleton oil seal, a first sleeve, a second sleeve, a support ring, a limit rod, a main frame, a screw sleeve, a screw and a handle, wherein the shaft sleeve is arranged inside the mounting sleeve, the skeleton oil seal is movably connected inside the mounting sleeve, the first sleeve is sleeved on the outer surface of the shaft sleeve, the second sleeve is sleeved on the outer surface of the first sleeve, the support ring is fixedly installed on the right side of the mounting sleeve, the limit rod is fixedly installed on the right side of the support ring, the main frame is slidably connected to the outer surface of the limit rod, the screw sleeve is fixedly installed on the right side of the main frame, the screw sleeve is threadedly connected to the screw inside, and the handle is fixedly installed on the right side of the screw;

[0007] The fixing device includes a movable rod, a limit plate, a spring body, a first magnet and a second magnet. The movable rod is movably connected inside the main frame, the limit plate is fixedly installed on the outer surface of the movable rod, the spring body is fixedly installed inside the main frame, the first magnet is fixedly installed outside the movable rod, and the second magnet is fixedly installed inside the limit rod.

[0008] Furthermore, a sealing ring is arranged inside the shaft sleeve, and a plug-in hole matching the outer surface of the screw is arranged on the right side of the first sleeve and the right side of the second sleeve.

[0009] Furthermore, the right side of the skeleton oil seal is movably connected to the left side of the second sleeve, and the interior of the skeleton oil seal is slidably connected to the outer surface of the shaft sleeve.

[0010] Furthermore, the left side of the screw rod passes through the right side of the screw sleeve and the right side of the main frame, and extends to the interior of the mounting sleeve.

[0011] Furthermore, the number of the limit rods is four, and the four limit rods are all located on the right side of the support ring. The outer surfaces of the four limit rods are all movably connected to the inner part of the main frame. The number of the movable rods and the limit plates are four, and the inner parts of the four limit plates are respectively fixedly connected to the outer surfaces of the four movable rods.

[0012] Furthermore, the number of the spring bodies is four, the sides of the four spring bodies close to the limiting rod are fixedly connected to the sides of the four limiting plates away from the limiting rod, and the number of the first magnet and the second magnet are both four.

[0013] Beneficial Effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The special tool for repairing the vacuum Roots pump sealing assembly comprises the following steps: firstly, installing the skeleton oil seal into the interior of the installation sleeve, then inserting the first sleeve into the exterior of the shaft sleeve, and then inserting the second sleeve into the exterior of the first sleeve, and then pulling the movable rod inside the main frame, and through the movement of the movable rod, the spring body is squeezed in cooperation with the limit plate, and then the main frame is installed on the right side of the support ring through four limit rods, and then the movable rod is loosened, and the movable rod is fixed inside the limit rod through the action force of the spring body and the magnetic force of the first magnet and the second magnet, so as to fix the main frame, and then the screw is driven to rotate by turning the handle, so as to insert the left side of the screw into the plug-in hole of the second sleeve, and pressure is applied to the second sleeve and the first sleeve, so as to achieve the purpose of smoothly installing the repair tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the structure of the right side view of the main frame of the utility model.

[0020] In the figure: 1. pump body; 2. mounting sleeve; 3. easy-to-repair sealing device; 301. shaft sleeve; 302. skeleton oil seal; 303. first sleeve; 304. second sleeve; 305. support ring; 306. limit rod; 307. main frame; 308. screw sleeve; 309. screw rod; 310. handle; 4. fixing device; 401. movable rod; 402. limit plate; 403. spring body; 404. first magnet; 405. second magnet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , a special tool for repairing a vacuum Roots pump seal assembly, comprising a pump body 1, a mounting sleeve 2 is fixedly installed on the right side of the pump body 1, a repair-friendly sealing device 3 is arranged outside the pump body 1, and a fixing device 4 is arranged outside the pump body 1;

[0023] The repairable sealing device 3 includes a sleeve 301, a skeleton oil seal 302, a first sleeve 303, a second sleeve 304, a support ring 305, a limit rod 306, a main frame 307, a screw sleeve 308, a screw rod 309 and a handle 310. The sleeve 301 is arranged inside the mounting sleeve 2, the skeleton oil seal 302 is movably connected inside the mounting sleeve 2, the first sleeve 303 is sleeved on the outer surface of the sleeve 301, the second sleeve 304 is sleeved on the outer surface of the first sleeve 303, the support ring 305 is fixedly installed on the right side of the mounting sleeve 2, the limit rod 306 is fixedly installed on the right side of the support ring 305, the main frame 307 is slidably connected on the outer surface of the limit rod 306, the screw sleeve 308 is fixedly installed on the right side of the main frame 307, the screw sleeve 308 is internally threadedly connected to the screw rod 309, and the handle 310 is fixedly installed on the right side of the screw rod 309;

[0024] The fixing device 4 includes a movable rod 401, a limiting plate 402, a spring body 403, a first magnet 404 and a second magnet 405. The movable rod 401 is movably connected inside the main frame 307, the limiting plate 402 is fixedly installed on the outer surface of the movable rod 401, the spring body 403 is fixedly installed inside the main frame 307, the first magnet 404 is fixedly installed outside the movable rod 401, and the second magnet 405 is fixedly installed inside the limiting rod 306.

[0025] Specifically, Figure 2 As shown, when the device needs to be removed, the movable rod 401 is pulled to squeeze the spring body 403, thereby pulling the movable rod 401 out of the limiting rod 306, and separating the first magnet 404 and the second magnet 405, and then taking the main frame 307 out of the limiting rod 306, and then removing the second sleeve 304 and the first sleeve 303.

[0026] Specifically, Figure 2 As shown, the first sleeve 303 and the second sleeve 304 are both provided with plug-in holes inside, and the first sleeve 303 can also directly insert the screw 309 into the plug-in hole and directly install it under the pressure of the screw 309.

[0027] Specifically, Figure 3 As shown, the material of the spring body 403 is beryllium bronze, which contains 1.7-2.5% beryllium. The addition of beryllium has excellent elasticity. Beryllium bronze is a precipitation hardening alloy with good strength, hardness, elasticity and fatigue resistance. The beryllium bronze spring can still maintain excellent mechanical properties at high temperatures.

[0028] When implementing, follow these steps:

[0029] 1) First install the skeleton oil seal 302 into each part of the installation sleeve 2, and insert the first sleeve 303 and the second sleeve 304 respectively;

[0030] 2) Then, the movable rod 401 is pulled to squeeze the spring body 403 under the action of the limiting plate 402;

[0031] 3) The main frame 307 is then installed through the four limit rods 306, and the four movable rods 401 are loosened. Under the action of the spring body 403, the four movable rods 401 are inserted into the four limit rods 306;

[0032] 4) Finally, the handle 310 is rotated to drive the screw rod 309 to rotate, so that the second sleeve 304 and the first sleeve 303 are pressurized and installed through the screw rod 309 .

[0033] In summary, the vacuum Roots pump seal assembly maintenance tool first installs the skeleton oil seal 302 into the interior of the installation sleeve 2, then inserts the first sleeve 303 into the exterior of the shaft sleeve 301, and then inserts the second sleeve 304 into the exterior of the first sleeve 303, and then pulls the movable rod 401 inside the main frame 307, and through the movement of the movable rod 401, cooperates with the limit plate 402 to squeeze the spring body 403, and then installs the main frame 307 on the support ring 307 through the four limit rods 306. 5, and then loosen the movable rod 401, and fix the movable rod 401 inside the limiting rod 306 through the force of the spring body 403 and the magnetic force of the first magnet 404 and the second magnet 405, so as to fix the main frame 307, and then drive the screw rod 309 to rotate by turning the handle 310, so as to insert the left side of the screw rod 309 into the plug-in hole of the second sleeve 304, and apply pressure to the second sleeve 304 and the first sleeve 303, so as to achieve the purpose of smoothly installing the maintenance tool.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool for repairing a vacuum Roots pump seal assembly, comprising a pump body (1), characterized in that: A mounting sleeve (2) is fixedly mounted on the right side of the pump body (1), a sealing device (3) for easy maintenance is arranged outside the pump body (1), and a fixing device (4) is arranged outside the pump body (1); The easy-to-repair sealing device (3) comprises a shaft sleeve (301), a skeleton oil seal (302), a first sleeve (303), a second sleeve (304), a support ring (305), a limit rod (306), a main frame (307), a screw sleeve (308), a screw rod (309) and a handle (310). The shaft sleeve (301) is arranged inside the installation sleeve (2), and the skeleton oil seal (302) is movably connected inside the installation sleeve (2). The outer surface of the shaft sleeve (301) is sleeved with the first sleeve (303). The outer surface of the sleeve (303) is sleeved with a second sleeve (304); a support ring (305) is fixedly installed on the right side of the installation sleeve (2); a limit rod (306) is fixedly installed on the right side of the support ring (305); a main frame (307) is slidably connected to the outer surface of the limit rod (306); a screw sleeve (308) is fixedly installed on the right side of the main frame (307); a screw rod (309) is internally threadedly connected to the screw sleeve (308); and a handle (310) is fixedly installed on the right side of the screw rod (309); The fixing device (4) comprises a movable rod (401), a limiting plate (402), a spring body (403), a first magnet (404) and a second magnet (405); the movable rod (401) is movably connected inside the main frame (307); the limiting plate (402) is fixedly installed on the outer surface of the movable rod (401); the spring body (403) is fixedly installed inside the main frame (307); the first magnet (404) is fixedly installed outside the movable rod (401); and the second magnet (405) is fixedly installed inside the limiting rod (306).

2. The special tool for repairing the vacuum Roots pump seal assembly according to claim 1, characterized in that: A sealing ring is arranged inside the shaft sleeve (301), and the right side of the first sleeve (303) and the right side of the second sleeve (304) are both provided with plug-in holes that match the outer surface of the screw rod (309).

3. The special tool for repairing the vacuum Roots pump seal assembly according to claim 1, characterized in that: The right side of the skeleton oil seal (302) is movably connected to the left side of the second sleeve (304), and the interior of the skeleton oil seal (302) is slidably connected to the outer surface of the shaft sleeve (301).

4. The special tool for repairing the vacuum Roots pump seal assembly according to claim 1, characterized in that: The left side of the screw rod (309) passes through the right side of the screw sleeve (308) and the right side of the main frame (307), and extends to the inside of the installation sleeve (2).

5. The special tool for repairing the vacuum Roots pump seal assembly according to claim 1, characterized in that: There are four limit rods (306), and the four limit rods (306) are all located on the right side of the support ring (305). The outer surfaces of the four limit rods (306) are all movably connected to the inside of the main frame (307). There are four movable rods (401) and four limit plates (402), and the insides of the four limit plates (402) are respectively fixedly connected to the outer surfaces of the four movable rods (401).

6. The special tool for repairing the vacuum Roots pump seal assembly according to claim 1, characterized in that: The number of the spring bodies (403) is four, and the sides of the four spring bodies (403) close to the limiting rod (306) are fixedly connected to the sides of the four limiting plates (402) away from the limiting rod (306), and the number of the first magnet (404) and the second magnet (405) are both four.

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