High-wear-resistance sealing ring for dry-type screw vacuum pump

Abstract

The utility model relates to the technical field of screw vacuum pumps, in particular to a high-wear-resistance sealing ring for a dry-type screw vacuum pump, which comprises a high-wear-resistance sealing ring. The outer portion of the high-abrasion-resistance sealing ring is connected with a sealing seat, and a connecting hole is formed in the sealing seat. The high-wear-resistance sealing ring is composed of two semi-sealing rings; the sealing seat is composed of two semi-rings, threaded holes are formed in the outer walls of the two semi-rings, and a first channel hole communicated with the threaded holes is formed in the outer wall of one semi-ring. Threaded rods are in threaded connection with the interiors of the two threaded holes, and limiting plates located in the first channel holes are fixed to one ends of the threaded rods. According to the high-abrasion-resistance sealing ring dismounting device, the high-abrasion-resistance sealing ring can be dismounted conveniently, and therefore the high-abrasion-resistance sealing ring can be replaced and maintained conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of screw vacuum pumps, in particular to a high wear-resistant sealing ring for a dry screw vacuum pump. Background Art

[0002] Screw vacuum pumps are mostly used in industries such as industry, medicine and chemical industry, which have extremely high requirements for sealing. At the connection between the rotor and the transmission shaft, high-wear-resistant sealing rings are required to seal the bearings. High-wear-resistant sealing rings are wearing parts and need to be replaced frequently. The existing high-wear-resistant sealing rings adopt an integrated design, which is inconvenient to disassemble, making it inconvenient to replace and maintain the high-wear-resistant sealing rings.

[0003] Therefore, a high wear-resistant sealing ring for a dry screw vacuum pump is proposed. Summary of the invention

[0004] The utility model aims to provide a high wear-resistant sealing ring for a dry screw vacuum pump.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high wear-resistant sealing ring for a dry screw vacuum pump, comprising:

[0007] High wear-resistant sealing ring;

[0008] The high wear-resistant sealing ring is externally connected to a sealing seat, and a connecting hole is provided on the sealing seat;

[0009] The highly wear-resistant sealing ring is composed of two half sealing rings;

[0010] The sealing seat is composed of two half rings, the outer walls of the two half rings are provided with threaded holes, and the outer wall of one of the half rings is provided with a first channel hole connected with the threaded hole;

[0011] The two threaded holes are internally threadedly connected with a threaded rod, and one end of the threaded rod is fixed with a limiting plate located inside the first channel hole;

[0012] A rotation groove is formed at one end of the limiting plate.

[0013] Preferably, the outer walls of the two semi-sealing rings are provided with limiting grooves;

[0014] The inner sides of the two half rings are fixed with limiting arc bars, and the two limiting arc bars are clamped in the limiting grooves.

[0015] Preferably, the outer walls of the two semi-rings are each provided with a second channel hole, and the second channel hole is provided with a first clamping hole;

[0016] The first clamping hole passes through the semi-ring and the limiting arc strip in sequence.

[0017] Preferably, a second clamping hole matching with the first clamping hole is provided on the outer wall of the semi-sealing ring.

[0018] Preferably, a fixing pin is clamped in the first clamping hole and the second clamping hole, and an auxiliary plate located inside the second channel hole is fixed to one end of the fixing pin.

[0019] Preferably, a compression spring is provided outside the fixing pin, one end of the compression spring is fixed to the auxiliary plate, and the other end of the compression spring is fixed to the inner wall of the second channel hole.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model uses an external tool to cooperate with the rotating groove to rotate the limit plate, and the limit plate will drive the threaded rod to move in the two threaded holes. After the threaded rod is separated from the two threaded holes, the two half rings (sealing seats) can be disassembled, and then the two half sealing rings (high wear-resistant sealing rings) are driven to separate, so that the high wear-resistant sealing ring can be disassembled;

[0022] Compared with the prior art, the utility model is convenient for disassembling the high wear-resistant sealing ring, thereby facilitating replacement and maintenance of the high wear-resistant sealing ring.

[0023] The utility model provides limiting grooves on the outer walls of the two half sealing rings, and the inner sides of the two half rings are fixed with limiting arc strips, and the two limiting arc strips are clamped in the limiting grooves, so the connection stability of the two half sealing rings and the two half rings can be improved under the cooperation of the limiting grooves and the limiting arc strips;

[0024] And under the action of the compression spring, one end of the fixing pin will be driven to be clamped into the second clamping hole, so that the two half sealing rings and the two half rings can be reinforced again, and the connection stability of the two half sealing rings and the two half rings can be further improved. Therefore, the utility model has the function of easy disassembly and good connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0027] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0028] Figure 4 It is a schematic diagram of the structure of the high wear-resistant sealing ring in the utility model.

[0029] In the figure: 1. semi-sealing ring; 2. semi-ring; 3. limiting groove; 4. limiting arc strip; 5. connecting hole; 6. threaded hole; 7. first channel hole; 8. threaded rod; 9. limiting plate; 10. rotating groove; 11. second channel hole; 12. first clamping hole; 13. second clamping hole; 14. fixing pin; 15. auxiliary plate; 16. compression spring. DETAILED DESCRIPTION

[0030] 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.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Example

[0032] See also Figure 1 , 2 4. The utility model provides a technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: A high wear-resistant sealing ring for a dry screw vacuum pump, comprising: a high wear-resistant sealing ring; a sealing seat is connected to the outside of the high wear-resistant sealing ring, and a connecting hole 5 is provided on the sealing seat; the high wear-resistant sealing ring is composed of two half sealing rings 1; the sealing seat is composed of two half rings 2, and threaded holes 6 are provided on the outer walls of the two half rings 2, and a first channel hole 7 connected to the threaded holes 6 is provided on the outer wall of one of the half rings 2; a threaded rod 8 is connected to the inner threads of the two threaded holes 6, and a limit plate 9 located inside the first channel hole 7 is fixed at one end of the threaded rod 8; a rotation groove 10 is provided at one end of the limit plate 9.

[0033] Specifically, the utility model uses an external tool to cooperate with the rotating groove 10 to rotate the limit plate 9, and the limit plate 9 will drive the threaded rod 8 to move in the two threaded holes 6. After the threaded rod 8 is separated from the two threaded holes 6, the two half rings 2 (sealing seats) can be disassembled, and then the two half sealing rings 1 (high wear-resistant sealing rings) are driven to separate, and the high wear-resistant sealing rings can be disassembled;

[0034] Compared with the prior art, the utility model is convenient for disassembling the high wear-resistant sealing ring, thereby facilitating replacement and maintenance of the high wear-resistant sealing ring.

[0035] Furthermore, since the limiting plate 9 is located inside the first channel hole 7, the limiting plate 9 is prevented from being exposed, thereby improving space utilization. Example

[0036] See also Figure 1-3 The utility model provides a technical solution: a high wear-resistant sealing ring for a dry screw vacuum pump, wherein the outer walls of two semi-sealing rings 1 are provided with limiting grooves 3; the inner sides of the two semi-rings 2 are fixed with limiting arc strips 4, and the two limiting arc strips 4 are clamped in the limiting grooves 3; the outer walls of the two semi-rings 2 are provided with second channel holes 11, and the second channel holes 11 are provided with first clamping holes 12; the first clamping holes 12 sequentially penetrate the semi-rings 2 and the limiting arc strips 4, and the outer walls of the semi-sealing rings 1 are provided with second clamping holes 13 matched with the first clamping holes 12, and the first clamping holes 12 and the second clamping holes 13 are clamped with fixing pins 14, one end of the fixing pin 14 is fixed with an auxiliary plate 15 located in the second channel hole 11, and a compression spring 16 is provided outside the fixing pin 14, one end of the compression spring 16 is fixed to the auxiliary plate 15, and the other end of the compression spring 16 is fixed to the inner wall of the second channel hole 11.

[0037] Specifically, the utility model provides limiting grooves 3 on the outer walls of the two half sealing rings 1, and the inner sides of the two half rings 2 are fixed with limiting arc strips 4, and the two limiting arc strips 4 are clamped in the limiting grooves 3, so the connection stability of the two half sealing rings 1 and the two half rings 2 can be improved under the cooperation of the limiting grooves 3 and the limiting arc strips 4;

[0038] And under the action of the compression spring 16, one end of the fixing pin 14 will be driven to be clamped into the second clamping hole 13, so that the two half sealing rings 1 and the two half rings 2 can be reinforced again, and the connection stability of the two half sealing rings 1 and the two half rings 2 can be further improved. Therefore, the utility model has the function of easy disassembly and good connection stability.

[0039] Since the auxiliary plate 15 is located inside the second channel hole 11 , the auxiliary plate 15 will not be exposed, thereby improving space utilization.

[0040] Working principle:

[0041] First, by using an external tool to cooperate with the rotating groove 10 to rotate the limit plate 9, the limit plate 9 will drive the threaded rod 8 to move in the two threaded holes 6. After the threaded rod 8 is separated from the two threaded holes 6, the two half rings 2 (sealing seats) can be disassembled, and then the two half sealing rings 1 (high wear-resistant sealing rings) are driven to separate, and the high wear-resistant sealing rings can be disassembled;

[0042] Secondly, by providing the limiting grooves 3 on the outer walls of the two half sealing rings 1, the limiting arc strips 4 are fixed on the inner sides of the two half rings 2, and the two limiting arc strips 4 are clamped in the limiting grooves 3, so the connection stability of the two half sealing rings 1 and the two half rings 2 can be improved under the cooperation of the limiting grooves 3 and the limiting arc strips 4;

[0043] And under the action of the compression spring 16, one end of the fixing pin 14 will be driven to be clamped into the second clamping hole 13, so that the two half sealing rings 1 and the two half rings 2 can be reinforced again, and the connection stability of the two half sealing rings 1 and the two half rings 2 can be further improved. Therefore, the utility model has the function of easy disassembly and good connection stability.

[0044] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high wear-resistant sealing ring for a dry screw vacuum pump, characterized in that: include: High wear-resistant sealing ring; The high wear-resistant sealing ring is externally connected to a sealing seat, and the sealing seat is provided with a connecting hole (5); The highly wear-resistant sealing ring is composed of two half sealing rings (1); The sealing seat is composed of two half rings (2), the outer walls of the two half rings (2) are both provided with threaded holes (6), and the outer wall of one of the half rings (2) is provided with a first channel hole (7) connected to the threaded hole (6); The two threaded holes (6) are internally threadedly connected to a threaded rod (8), and a limiting plate (9) located inside the first channel hole (7) is fixed to one end of the threaded rod (8); A rotation groove (10) is formed at one end of the limiting plate (9).

2. A high wear-resistant sealing ring for a dry screw vacuum pump according to claim 1, characterized in that: The outer walls of the two semi-sealing rings (1) are both provided with limiting grooves (3); The inner sides of the two half rings (2) are both fixed with limiting arc strips (4), and the two limiting arc strips (4) are clamped inside the limiting grooves (3).

3. A high wear-resistant sealing ring for a dry screw vacuum pump according to claim 1, characterized in that: A second passage hole (11) is provided on the outer wall of each of the two half rings (2), and a first clamping hole (12) is provided in the second passage hole (11); The first clamping hole (12) passes through the semi-ring (2) and the limiting arc strip (4) in sequence.

4. A high wear-resistant sealing ring for a dry screw vacuum pump according to claim 1, characterized in that: A second clamping hole (13) matching with the first clamping hole (12) is provided on the outer wall of the semi-sealing ring (1).

5. A high wear-resistant sealing ring for a dry screw vacuum pump according to claim 4, characterized in that: A fixing pin (14) is clamped in the first clamping hole (12) and the second clamping hole (13), and an auxiliary plate (15) located inside the second channel hole (11) is fixed to one end of the fixing pin (14).

6. A high wear-resistant sealing ring for a dry screw vacuum pump according to claim 5, characterized in that: A compression spring (16) is provided outside the fixing pin (14), one end of the compression spring (16) is fixed to the auxiliary plate (15), and the other end of the compression spring (16) is fixed to the inner wall of the second channel hole (11).

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