Auxiliary installation tool for sealing static ring

Abstract

The utility model provides an auxiliary mounting tool for a sealing static ring, which comprises a suction chamber, a push rod, a positioning ring and a sleeve, and the axes of the suction chamber, a mounting chamber, the sealing static ring and a mounting hole coincide; according to the utility model, firstly, the sealing static ring is sucked by the suction chamber and is positioned by the positioning ring, so that the sealing static ring and the mounting hole are coaxial, and then all parts of the sealing static ring are synchronously pushed into the mounting hole along the axis direction by knocking the push rod, so that the conventional mounting form of slowly knocking all parts is eliminated; the sealing static ring is prevented from being damaged, the cost of accessories is reduced, and meanwhile the time of overhaul operation is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of installation equipment, in particular to an auxiliary installation tool for a sealing static ring. Background Art

[0002] Roots vacuum pump is a positive displacement vacuum pump, and it is allowed to withstand a large input power. The rotor of the pump has a very special cross-sectional shape, which allows gas to enter and reach a stable vacuum state. There is cooling water between the drive bearing seat and the two oil tanks. All mechanical seals are used. The seal on the rotor is a lifting ring seal and only mechanical seals are used on the drive shaft. Roots vacuum pump has a compact structure. When replacing the seal, the installation method for the sealing static ring is generally to align the sealing static ring with the mounting hole first, and then slowly tap the sealing static ring to press the sealing static ring into the mounting hole in the installation chamber. However, this method is more difficult and easy to damage the sealing static ring. Since most of the sealing static rings are imported, about 30,000 yuan per set, installing in this way not only increases the cost of accessories, but also increases the time of maintenance operations. Utility Model Content

[0003] The purpose of the utility model is to design a sealing static ring auxiliary installation tool to solve the problems raised by the background technology. To achieve the above purpose, the utility model provides the following technical solutions: including a suction chamber for sucking the sealing static ring, a push rod for pressing the sealing static ring into the installation hole, and a positioning ring with a clearance fit with the installation chamber, the suction chamber is arranged inside the sleeve, the push rod is slidably connected with the sleeve and the push rod passes through the sleeve, the bottom of the push rod is in contact with the sealing static ring, and the axes of the suction chamber, the installation chamber, the sealing static ring and the installation hole coincide.

[0004] Furthermore, a hole is provided on the inner wall of the suction chamber, and a permanent magnet for absorbing the sealing static ring is embedded in the hole.

[0005] Furthermore, the sleeve includes a first circular column provided with the suction chamber and a second circular column connected to the top of the first circular column, the push rod includes a push column and a knocking column, the push column is slidably connected to the suction chamber, the knocking column is slidably connected to the second circular column, and the bottom of the push column is tightly attached to the top of the sealing static ring.

[0006] Furthermore, a first limiting platform is provided inside the suction chamber, and the top of the push column is in contact with the first limiting platform.

[0007] Furthermore, the top of the push pin is connected to the top of the suction chamber through a spring.

[0008] Furthermore, a first chamfer is provided between the first circular column and the second circular column.

[0009] Furthermore, the positioning ring is threadedly connected to the sleeve.

[0010] Furthermore, a second limiting platform is provided on the sleeve, and the bottom of the positioning ring is in contact with the second limiting platform.

[0011] Furthermore, a scale bar is provided on the upper portion of the push rod, and a zero scale line of the scale bar is flush with the top plane of the sleeve.

[0012] Furthermore, the positioning ring and the lower end surface of the suction chamber are both provided with a second chamfer.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model firstly absorbs the sealing static ring through the suction chamber and positions the sealing static ring through the positioning ring so that the sealing static ring and the mounting hole are coaxial, and then the push rod can be knocked so that various parts of the sealing static ring are synchronously pushed into the mounting hole along the axial direction, thereby eliminating the previous installation form of slowly knocking at various places, preventing damage to the sealing static ring, reducing the cost of accessories and also reducing the time of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional schematic diagram during the installation process of the utility model.

[0018] Among them: 1. push rod; 2. second circular ring column; 3. first circular ring column; 4. sleeve; 5. positioning ring; 6. first chamfer; 7. scale bar; 8. spring; 9. suction chamber; 10. first limit platform; 11. second chamfer; 12. sealing static ring; 13. mounting hole; 14. permanent magnet; 15. mounting chamber; 16. second limit platform; 17. push column; 18. knock column. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figure 1-2 , a sealing static ring auxiliary installation tool, including a suction chamber 9 for sucking a sealing static ring 12, a push rod 1 for pressing the sealing static ring 12 into a mounting hole 13, and a positioning ring 5 with a clearance fit with the mounting chamber 15, the suction chamber 9 is arranged inside a sleeve 4, the push rod 1 is slidably connected with the sleeve 4 and the push rod 1 passes through the sleeve 4, the bottom of the push rod 1 is in contact with the sealing static ring 12, the axes of the suction chamber 9, the mounting chamber 15, the sealing static ring 12 and the mounting hole 13 coincide, wherein the sliding connection method adopts the form of clearance fit, and a hole is provided on the inner wall of the suction chamber 9, a permanent magnet 14 for sucking the sealing static ring 12 is embedded in the hole, and the permanent magnet 14 can be bonded to the hole by glue; when it is necessary to install When installing the sealing static ring 12, it is only necessary to put the sealing static ring 12 into the suction chamber 9, and under the positioning of the bottom end of the push rod 1 and the adsorption of the permanent magnet 14, the sealing static ring 12 is stabilized and will not fall from the suction chamber 9 when the sealing static ring 12 is transferred. Then the positioning ring 5 is matched with the installation chamber 15, so that the installation hole 13 and the sealing static ring 12 are coaxial, and then the end of the sleeve 4 is aligned with the bottom of the installation chamber 15, and then the push rod 1 is knocked, and the sealing static ring 12 can be pushed into the installation hole 13 synchronously along the axial direction. This eliminates the previous installation method of slowly knocking at various places, prevents damage to the sealing static ring 12, reduces the cost of accessories, and also reduces the time of maintenance operations.

[0021] In this embodiment, the sleeve 4 includes a first circular column 3 provided with a suction chamber 9 and a second circular column 2 connected to the top of the first circular column 3, the push rod 1 includes a push column 17 and a knock column 18, the push column 17 is slidably connected to the suction chamber 9, the knock column 18 is slidably connected to the second circular column 2, the bottom of the push column 17 is tightly attached to the top of the sealing static ring 12, thereby ensuring the compactness of the tooling structure, wherein the sliding connection adopts a clearance fit method; a first limiting platform 10 is provided inside the suction chamber 9, the top of the push column 17 is attached to the first limiting platform 10, which plays a limiting role on the push column 17, thereby ensuring the accurate positioning of the sealing static ring 12; and the top of the push column 17 is connected to the top of the suction chamber 9 through the spring 8, thereby ensuring that the top of the push column 17 is always tightly attached to the first limiting platform 10 in the initial state, which is convenient for the suction and positioning of the sealing static ring 12; A first chamfer 6 is provided between the first circular column 3 and the second circular column 2, which reduces the volume of the tooling and eliminates local stress concentration, thereby extending the service life of the tooling; the positioning ring 5 is threadedly connected to the first circular column 3. When the diameter of the installation chamber 15 changes, the positioning ring 5 of different sizes can be replaced to adapt to the change of the installation chamber 15, thereby improving the flexibility of the tooling; a second limit platform 16 is provided on the first circular column 3, and the bottom of the positioning ring 5 is in contact with the second limit platform 16, which is convenient for the rapid installation and positioning of the positioning ring 5; a scale bar 7 is provided on the knocking rod, and the zero scale line of the scale bar 7 is flush with the top plane of the sleeve 4, which is convenient for observing the knocking depth of the sealing static ring 12; and a second chamfer 11 is provided on the lower end surface of the positioning ring 5 and the suction chamber 9, which is convenient for the positioning ring 5 to enter the installation chamber 15 and the push column 17 and the sealing static ring 12 to enter the suction chamber 9.

[0022] How it works

[0023] When it is necessary to install the sealing static ring 12, it is only necessary to put the sealing static ring 12 into the suction chamber 9, and release the sealing static ring 12 when it is pushed to the bottom end of the push column 17. The sealing static ring 12 is adsorbed on the inner wall of the suction chamber 9 under the action of the permanent magnet 14, and then the positioning ring 5 is embedded in the installation chamber 15, and the end of the first circular ring column 3 is made to fit the bottom of the installation chamber 15, and then the knocking column 18 is hammered to simultaneously push the sealing static ring 12 into the installation hole 13 along the axial direction. When it is observed that the top plane of the second circular ring column 2 coincides with the scale line in the scale bar 7 that is consistent with the height of the sealing static ring 12, the installation of the sealing static ring 12 is completed; therefore, the utility model eliminates the previous installation form of slowly knocking at various places, prevents damage to the sealing static ring 12, reduces the cost of accessories, and also reduces the time of maintenance operations.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sealing stationary ring auxiliary installation tool, characterized in that: The invention comprises a suction chamber (9) for sucking a sealing static ring (12), a push rod (1) for pressing the sealing static ring (12) into a mounting hole (13), and a positioning ring (5) which is clearance-matched with the mounting chamber (15); the suction chamber (9) is arranged inside a sleeve (4); the push rod (1) is slidably connected to the sleeve (4) and the push rod (1) passes through the sleeve (4); the bottom of the push rod (1) is in contact with the sealing static ring (12); the suction chamber (9), the mounting chamber (15), and the sealing static ring (12) are arranged inside a sleeve (4); the push rod (1) is slidably connected to the sleeve (4) and passes through the sleeve (4); the bottom of the push rod (1) is in contact with the sealing static ring (12); The axis of the static sealing ring (12) and the mounting hole (13) coincide with each other; the sleeve (4) comprises a first circular column (3) provided with the suction chamber (9) and a second circular column (2) connected to the top of the first circular column (3); the push rod (1) comprises a push column (17) and a knock column (18); the push column (17) is slidably connected to the suction chamber (9); the knock column (18) is slidably connected to the second circular column (2); the bottom of the push column (17) is in close contact with the top of the static sealing ring (12).

2. The sealing stationary ring auxiliary installation tool according to claim 1 is characterized in that: The inner wall of the suction chamber (9) is provided with a hole, in which a permanent magnet (14) for sucking the sealing static ring (12) is embedded.

3. The sealing stationary ring auxiliary installation tool according to claim 1 is characterized in that: A first limiting platform (10) is provided inside the suction chamber (9), and the top of the push column (17) is in contact with the first limiting platform (10).

4. The sealing stationary ring auxiliary installation tool according to claim 1 is characterized in that: The top of the push column (17) is connected to the top of the suction chamber (9) via a spring (8).

5. The auxiliary installation tool for the sealing stationary ring according to claim 3 is characterized in that: A first chamfer (6) is provided between the first circular column (3) and the second circular column (2).

6. The sealing stationary ring auxiliary installation tool according to claim 1, characterized in that: The positioning ring (5) is threadedly connected to the sleeve (4).

7. The sealing stationary ring auxiliary installation tool according to claim 6 is characterized in that: The sleeve (4) is provided with a second limiting platform (16), and the bottom of the positioning ring (5) is in contact with the second limiting platform (16).

8. The sealing stationary ring auxiliary installation tool according to claim 1, characterized in that: A scale bar (7) is provided on the upper part of the push rod (1), and the zero scale line of the scale bar (7) is flush with the top plane of the sleeve (4).

9. The sealing stationary ring auxiliary installation tool according to claim 1, characterized in that: The lower end surfaces of the positioning ring (5) and the suction chamber (9) are both provided with a second chamfer (11).

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