Combined sealing structure of dry vacuum pump

Abstract

The invention relates to the technical field of combined sealing structures of vacuum pumps, and discloses a combined sealing structure of a dry vacuum pump, which comprises a sealing disc, a stress telescopic rod is fixedly connected to the surface of the sealing disc, a contact ring is fixedly connected to one end, far away from the sealing disc, of the stress telescopic rod, and a contact hole is formed in the surface of the sealing disc. And the inner wall of the contact hole is fixedly connected with a sealing ring. By arranging the sealing mechanism, when a sliding rod slides, a fixing frame can be pushed to move in the direction close to each other, in the moving process of the fixing frame, the fixing frame makes contact with the outer wall of a sealing ring so that the sealing ring can be fixed, at the moment, the sealing ring exactly makes contact with the end of the sealing ring, meanwhile, a stress telescopic rod contracts in place, and the sealing ring is fixed. And the sealing disc is limited, the sealing performance of the sealing ring on the inner wall of the vacuum pump main body is effectively improved through contact between the sealing ring and the sealing ring, and the sealing ring is fixed through the fixing frame, so that the overall stability is improved.

Description

Technical Field

[0001] This invention relates to the technical field of combined sealing structure equipment for vacuum pumps, specifically a combined sealing structure for a dry vacuum pump. Background Technology

[0002] A dry vacuum pump is a mechanical vacuum device that does not require oil lubrication. It draws gas directly from atmospheric pressure and discharges it directly through mechanical motion, with an ultimate pressure approaching that of an oil-sealed vacuum pump. Its core feature is oil-free operation, avoiding the media contamination problem of traditional vacuum pumps, and it is widely used in industrial fields with high cleanliness requirements.

[0003] In existing technology, the shaft of a dry vacuum pump is located on the inner wall of the pump body, and a sealing ring is usually installed on the surface of the shaft. The sealing ring is located between the surface of the shaft and the inner wall of the pump, which plays a sealing role. However, the sealing ring will be damaged over time, which will lead to leakage of internal gas in the vacuum pump, thereby reducing the sealing performance of the dry vacuum pump. Summary of the Invention

[0004] The purpose of this invention is to provide a combined sealing structure for a dry vacuum pump to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a combined sealing structure for a dry vacuum pump, comprising a vacuum pump body, an air inlet pipe fixedly connected to the top of the vacuum pump body, a U-shaped plate fixedly connected to the end of the vacuum pump body, a rotating shaft rotatably connected to the inner wall of the U-shaped plate, a rotor fixedly connected to the surface of the rotating shaft, two rotating shafts, each with a rotating gear disk I and a rotating gear disk II fixedly connected to the end of the two rotating shafts away from the U-shaped plate, a power device fixedly connected to the side of the rotating gear disk I near the power device, a base fixedly connected to the bottom of the vacuum pump body, a bidirectional threaded rod rotatably connected to the surface of the base, a sealing ring fixed to the inner wall of the vacuum pump body, and further comprising; A leak prevention mechanism, comprising a detection device, wherein a transmission line is fixedly connected to one end of the detection device, and an alarm device is fixedly connected to the other end of the transmission line away from the detection device. A sealing mechanism, comprising a push plate, wherein a slide rod is rotatably connected to the end of the push plate, and a fixing frame is fixedly connected to the end of the slide rod; A reinforcement mechanism, comprising a support ring, wherein a limit telescopic rod is fixedly connected to the outer wall of the support ring.

[0006] Furthermore, an exhaust hole is provided on the lower surface of the vacuum pump body, the first rotating gear disk and the second rotating gear disk mesh with each other, the bottom of the air inlet pipe communicates with the inner wall of the vacuum pump body, the inner wall of the sealing ring contacts the surface of the rotating shaft, and there are two rotors, which are symmetrically arranged on the surface of the rotating shaft.

[0007] Furthermore, the leak-proof mechanism includes a threaded ring, a right-angle plate is fixedly connected to the surface of the threaded ring, a driven rod is fixedly connected to the end of the right-angle plate away from the threaded ring, a pusher is fixedly connected to the surface of the driven rod, and a leak-proof ring is fixedly connected to the end of the pusher.

[0008] Furthermore, the inner wall of the threaded ring is threadedly connected to the surface of the bidirectional threaded rod, the surface of the detection device is fixedly connected to the inner wall of the leak-proof ring, the bottom of the alarm device is fixedly connected to the top of the vacuum pump body, and the number of leak-proof rings is set to four, divided into two groups of two, with the four leak-proof rings symmetrically arranged at the end of the push frame.

[0009] Furthermore, the sealing mechanism includes a sealing disc, a force-bearing telescopic rod is fixedly connected to the surface of the sealing disc, a contact ring is fixedly connected to the end of the force-bearing telescopic rod away from the sealing disc, a contact hole is opened on the surface of the sealing disc, and a sealing ring is fixedly connected to the inner wall of the contact hole.

[0010] Furthermore, the inner wall of the leak-proof ring is fixedly connected to the outer wall of the sealing disc, the end of the push plate away from the slide rod is rotatably connected to the inner wall of the contact ring, the surface of the sealing disc is provided with a groove, the inner wall of the groove is slidably connected to the slide rod, and the inner wall of the contact hole and the inner wall of the sealing ring are in contact with the surface of the rotating shaft.

[0011] Furthermore, the reinforcement mechanism includes a grooved plate, a slider is slidably connected to the inner wall of the grooved plate, push plates are fixedly connected to both ends of the slider, a reinforcement telescopic ring is fixedly connected to the end of the push plate away from the slider, a pull plate is hinged to the surface of the slider, and a passive plate is hinged to the end of the pull plate away from the slider.

[0012] Furthermore, the driven rod is located near one end of the passive plate and extends through the end of the vacuum pump body, and is fixedly connected to the surface of the passive plate. The surface of the grooved plate is fixedly connected to the inner wall of the vacuum pump body. The inner wall of the support ring is in contact with the surface of the driven rod, and the surface of the reinforcing telescopic ring is in contact with the inner wall of the vacuum pump body.

[0013] The present invention has the following beneficial effects: This invention employs a leak-proof mechanism. First, the operator holds the end of the bidirectional threaded rod and rotates it clockwise. Simultaneously, the rotation of the bidirectional threaded rod causes the threaded rings to move closer together. This movement of the threaded rings drives the right-angle plate to move closer together, which in turn drives the driven rod to move closer together. The driven rod then drives the pusher frame to move closer together, which in turn pushes the leak-proof rings to move closer together. The movement of the leak-proof rings also causes the detection device and transmission line to move closer together, and simultaneously, the movement of the leak-proof rings also causes the sealing disc to move closer together. During the movement of the leak-proof rings, ... When the sealing ring contacts the end of the vacuum pump body, the operator can stop rotating the double-threaded rod. This effectively prevents gas from diffusing into the leak-proof ring when a leak occurs due to prolonged use. When the detection device detects the gas, it transmits the leak signal to the alarm device via a transmission line. Upon receiving the signal, the alarm device sounds an alarm, alerting the operator that there is a gas leak in the vacuum pump body. Through the cooperation between the leak-proof ring and the sealing plate, the gas diffuses into the interior of the leak-proof ring. Because the end of the leak-proof ring contacts the surface of the vacuum pump body, the gas is sealed, preventing it from leaking outward and preventing external air from entering the interior of the vacuum pump body, thus improving the sealing effect.

[0014] This invention employs a sealing mechanism. When the anti-leakage ring moves, it causes the sealing discs to move closer together. The movement of the sealing discs, in turn, pushes the force-bearing telescopic rods closer together, which in turn pushes the contact rings closer together. During this movement, the contact rings come into contact with the surface of the vacuum pump body. After contact, the contact rings remain stationary, while the sealing discs continue to push the force-bearing telescopic rods closer together. At this point, the force-bearing telescopic rods retract, and simultaneously, the sealing discs push the push plate, slide rod, fixing bracket, and sealing ring closer together. During the movement of the push plate, the angle between the push plate and the contact ring changes, pushing the slide rod to slide closer together inside the groove. As the slide rod slides, it pushes the fixing frame to move closer together. During the movement of the fixing frame, it contacts the outer wall of the sealing ring, thus fixing the sealing ring. At this time, the sealing ring is in contact with the end of the sealing ring. At the same time, the force-bearing telescopic rod retracts into place and limits the sealing plate. This effectively improves the sealing performance of the sealing ring to the inner wall of the vacuum pump body through the contact between the sealing rings. Furthermore, the fixing frame fixes the sealing ring, thereby improving the overall stability.

[0015] This invention employs a reinforcement mechanism. When the driven rod moves, it pushes the passive plate towards each other. The passive plate's movement pulls the pull plate towards each other, and simultaneously, the pull plate pulls the slider along the inner wall of the grooved plate towards each other. As the slider slides, it pushes the limiting telescopic rod towards each other, causing it to retract. The sliding of the slider also drives the pushing plate towards each other, which in turn pushes the reinforcing telescopic ring towards each other and retracts. When the reinforcing telescopic ring retracts to its final position, it contacts the other end of the sealing ring, at which point the limiting telescopic rod has retracted. The slider, push plate, and reinforcing telescopic ring are positioned to limit their movement. The reinforcing telescopic ring effectively strengthens the sealing ring, and together with the sealing ring, it reinforces both ends of the sealing ring, thereby improving the overall stability of the sealing ring. At this time, the power unit is started to drive the first rotating gear disk to rotate. When the first rotating gear disk rotates, it will drive the second rotating gear disk to rotate simultaneously. When the first and second rotating gear disks rotate simultaneously, they will drive the rotating shaft to rotate. During the rotation of the rotating shaft, the rotor will rotate. After the rotor rotates, it will draw in external air into the interior of the vacuum pump body and then discharge it through the exhaust port, thus performing a cycle operation.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the bidirectional threaded rod structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the leak-proof mechanism of the present invention; Figure 5 This is a schematic diagram of the detection device of the present invention; Figure 6 This is a schematic diagram of the overall structure of the sealing mechanism of the present invention; Figure 7 This is a schematic diagram of the fixing frame structure of the present invention; Figure 8 This is a schematic diagram of the overall structure of the reinforcement mechanism of the present invention; Figure 9This is a schematic diagram of the limiting telescopic rod structure of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Vacuum pump body; 2. Inlet pipe; 3. U-shaped plate; 4. Rotating shaft; 5. Rotor; 6. Rotating gear disk one; 7. Rotating gear disk two; 8. Power unit; 801. Base; 9. Bidirectional threaded rod; 101. Sealing ring; 10. Leak-proof mechanism; 11. Threaded ring; 12. Right-angle plate; 13. Driven rod; 14. Push frame; 15. Leak-proof ring; 16. Detection device; 17. Transmission line; 18. Alarm device; 30. Sealing mechanism; 31. Sealing disc; 32. Force-bearing telescopic rod; 33. Contact ring; 34. Push plate; 35. Slide rod; 36. Fixing frame; 37. Sealing ring; 50. Reinforcing mechanism; 51. Groove plate; 52. Slider; 53. Push plate; 54. Reinforcing telescopic ring; 55. Pull plate; 56. Passive plate; 57. Support ring; 58. Limiting telescopic rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9 As shown, the present invention is a combined sealing structure for a dry vacuum pump, including a vacuum pump body 1, an air inlet pipe 2 fixedly connected to the top of the vacuum pump body 1, a U-shaped plate 3 fixedly connected to the end of the vacuum pump body 1, a rotating shaft 4 rotatably connected to the inner wall of the U-shaped plate 3, a rotor 5 fixedly connected to the surface of the rotating shaft 4, two rotating shafts 4 are provided, and a rotating gear disk 1 6 and a rotating gear disk 2 7 are fixedly connected to the end of each rotating shaft 4 away from the U-shaped plate 3, a power device 8 is fixedly connected to the side of the rotating gear disk 1 6 near the power device 8, a base 801 is fixedly connected to the bottom of the vacuum pump body 1, a bidirectional threaded rod 9 is rotatably connected to the surface of the base 801, a sealing ring 101 is fixed to the inner wall of the vacuum pump body 1, and also includes; Leak prevention mechanism 10 includes a detection device 16. A transmission line 17 is fixedly connected to the end of the detection device 16. When the leak prevention ring 15 moves, it will drive the detection device 16 and the transmission line 17 to move towards each other. An alarm device 18 is fixedly connected to the end of the transmission line 17 away from the detection device 16. The sealing mechanism 30 includes a push plate 34, and a slide rod 35 is rotatably connected to the end of the push plate 34. During the movement of the push plate 34, the angle between the push plate 34 and the contact ring 33 will change, and push the slide rod 35 to slide in the groove towards each other. A fixing frame 36 is fixedly connected to the end of the slide rod 35. At the same time, the sealing disc 31 will push the push plate 34, the slide rod 35, the fixing frame 36 and the sealing ring 37 to move towards each other. When the slide rod 35 slides, it will push the fixing frame 36 to move towards each other. The reinforcement mechanism 50 includes a support ring 57, and a limit telescopic rod 58 is fixedly connected to the outer wall of the support ring 57. When the slider 52 slides, it will push the limit telescopic rod 58 to retract in the direction of mutual approach.

[0022] The lower surface of the vacuum pump body 1 is provided with an exhaust hole. Rotating gear disk 1 6 and rotating gear disk 2 7 mesh with each other. The bottom of the air inlet pipe 2 is connected to the inner wall of the vacuum pump body 1. The inner wall of the sealing ring 101 is in contact with the surface of the rotating shaft 4. There are two rotors 5, which are symmetrically arranged on the surface of the rotating shaft 4.

[0023] The leak-proof mechanism 10 includes a threaded ring 11. First, the operator holds the end of the bidirectional threaded rod 9 and rotates it clockwise. As the bidirectional threaded rod 9 rotates, the threaded ring 11 moves towards each other. A right-angle plate 12 is fixedly connected to the surface of the threaded ring 11. When the threaded ring 11 moves, it drives the right-angle plate 12 to move towards each other. A driven rod 13 is fixedly connected to the end of the right-angle plate 12 away from the threaded ring 11. At the same time, the right-angle plate 12 drives the driven rod 13 to move towards each other. A pusher 14 is fixedly connected to the surface of the driven rod 13. When the driven rod 13 moves, it drives the pusher 14 to move towards each other. A leak-proof ring 15 is fixedly connected to the end of the pusher 14. As the leak-proof ring 15 moves, it drives the sealing disc 31 to move towards each other. During the movement of the leak-proof ring 15, it will contact the end of the vacuum pump body 1. At this time, the operator can stop rotating the bidirectional threaded rod 9.

[0024] The inner wall of the threaded ring 11 is threadedly connected to the surface of the bidirectional threaded rod 9. The surface of the detection device 16 is fixedly connected to the inner wall of the leak-proof ring 15. The bottom of the alarm device 18 is fixedly connected to the top of the vacuum pump body 1. There are four leak-proof rings 15, divided into two groups of two. The four leak-proof rings 15 are symmetrically arranged at the end of the push frame 14. The push frame 14 will push the leak-proof rings 15 to move closer to each other. This effectively prevents gas from diffusing into the leak-proof ring 15 when the sealing ring 101 leaks after prolonged use. When the detection device 16 detects the gas, it will transmit the leakage signal to the alarm device 18 through the transmission line 17. After receiving the signal, the alarm device 18 will sound an alarm, thus reminding the staff that there is a gas leak in the vacuum pump body 1. Through the cooperation between the leak-proof ring 15 and the sealing plate 31, the gas diffuses into the interior of the leak-proof ring 15. Since the end of the leak-proof ring 15 is in contact with the surface of the vacuum pump body 1, the gas is sealed, preventing the gas from leaking outward and preventing external air from entering the interior of the vacuum pump body 1, thereby improving the sealing effect.

[0025] The sealing mechanism 30 includes a sealing disc 31. When the anti-leakage ring 15 moves, it will drive the sealing disc 31 to move closer to each other. A force-bearing telescopic rod 32 is fixedly connected to the surface of the sealing disc 31. At this time, the force-bearing telescopic rod 32 will retract in the direction of approaching each other. When the sealing disc 31 moves, it will push the force-bearing telescopic rod 32 to move closer to each other. A contact ring 33 is fixedly connected to the end of the force-bearing telescopic rod 32 away from the sealing disc 31. A contact hole is opened on the surface of the sealing disc 31. A sealing ring 37 is fixedly connected to the inner wall of the contact hole. During the movement of the fixing frame 36, it will contact the outer wall of the sealing ring 37, thereby fixing the sealing ring 37. At this time, the sealing ring 37 just contacts the end of the sealing ring 101. At the same time, the force-bearing telescopic rod 32 retracts into place and limits the sealing disc 31.

[0026] The inner wall of the leak-proof ring 15 is fixedly connected to the outer wall of the sealing disc 31. The end of the push plate 34 away from the slide rod 35 is rotatably connected to the inner wall of the contact ring 33. During the movement of the contact ring 33, it will contact the surface of the vacuum pump body 1. After the contact ring 33 contacts the surface of the vacuum pump body 1, it remains stationary, while the sealing disc 31 will continue to push the force-bearing telescopic rod 32 to move towards each other. When the force-bearing telescopic rod 32 moves, it will push the contact ring 33 to move towards each other. The surface of the sealing disc 31 is provided with a groove. The inner wall of the groove is slidably connected to the slide rod 35. The inner wall of the contact hole and the inner wall of the sealing ring 37 are in contact with the surface of the rotating shaft 4. The sealing ring 101 is effectively in contact with the sealing ring 37, thereby improving the sealing performance of the sealing ring 101 to the inner wall of the vacuum pump body 1. The sealing ring 37 is fixed by the fixing bracket 36, thereby improving the overall stability.

[0027] The reinforcement mechanism 50 includes a grooved plate 51, with a slider 52 slidably connected to the inner wall of the grooved plate 51. When the pull plate 55 moves, it pulls the slider 52 to slide closer to each other on the inner wall of the grooved plate 51. Push plates 53 are fixedly connected to both ends of the slider 52. When the slider 52 slides, it drives the push plate 53 to move closer to each other. A reinforcement telescopic ring 54 is fixedly connected to the end of the push plate 53 away from the slider 52. The pull plate 55 is hinged to the surface of the slider 52. When the passive plate 56 moves, it pulls the pull plate 55 to move closer to each other. The passive plate 56 is hinged to the end of the pull plate 55 away from the slider 52. The reinforcement telescopic ring 54 effectively reinforces the sealing ring 101 and, together with the sealing ring 37, reinforces both ends of the sealing ring 101, thereby improving the overall stability of the sealing ring 101.

[0028] The driven rod 13 is located near one end of the passive plate 56 and passes through the end of the vacuum pump body 1. It is fixedly connected to the surface of the passive plate 56. When the driven rod 13 moves, it pushes the passive plate 56 to move closer to each other. The surface of the groove plate 51 is fixedly connected to the inner wall of the vacuum pump body 1. The inner wall of the support ring 57 is in contact with the surface of the driven rod 13. The surface of the reinforcing telescopic ring 54 is in contact with the inner wall of the vacuum pump body 1. When the push plate 53 moves, it pushes the reinforcing telescopic ring 54 to move closer to each other and retracts. When the reinforcing telescopic ring 54 retracts to its position, it contacts the other end of the sealing ring 101. At this time, the limiting telescopic rod 58 retracts to its position, thereby limiting the slider 52, the push plate 53 and the reinforcing telescopic ring 54.

[0029] In use, the operator first holds the end of the bidirectional threaded rod 9 and rotates it clockwise. As the bidirectional threaded rod 9 rotates, the threaded rings 11 move closer together. When the threaded rings 11 move, they cause the right-angle plate 12 to move closer together. Simultaneously, the right-angle plate 12 causes the driven rod 13 to move closer together. When the driven rod 13 moves, it causes the pusher frame 14 to move closer together, which in turn pushes the leak-proof ring 15 closer together. As the leak-proof ring 15 moves, it causes the detection device 16 and the transmission line 17 to move closer together. Simultaneously, the movement of the leak-proof ring 15 also causes the sealing disc 31 to move closer together. During the movement of the leak-proof ring 15... During the process, it will contact the end of the vacuum pump body 1. At this time, the operator can stop rotating the bidirectional threaded rod 9. Effectively, when the sealing ring 101 leaks after prolonged use, the gas will diffuse into the interior of the leak-proof ring 15. When the detection device 16 detects the gas, it will transmit the leak signal to the alarm device 18 through the transmission line 17. After receiving the signal, the alarm device 18 will sound an alarm, thereby reminding the operator that there is a gas leak in the vacuum pump body 1. Through the cooperation between the leak-proof ring 15 and the sealing plate 31, the gas diffuses into the interior of the leak-proof ring 15. Since the end of the leak-proof ring 15 is in contact with the surface of the vacuum pump body 1, the gas is sealed, preventing the gas from leaking outward and preventing external air from entering the interior of the vacuum pump body 1. To improve the sealing effect, when the anti-leak ring 15 moves, it will drive the sealing disc 31 to move closer together. When the sealing disc 31 moves, it will push the force-bearing telescopic rod 32 to move closer together. When the force-bearing telescopic rod 32 moves, it will push the contact ring 33 to move closer together. During the movement of the contact ring 33, it will come into contact with the surface of the vacuum pump body 1. After the contact ring 33 comes into contact with the surface of the vacuum pump body 1, it will remain stationary, while the sealing disc 31 will continue to push the force-bearing telescopic rod 32 to move closer together. At this time, the force-bearing telescopic rod 32 will retract in the direction of moving closer together. At the same time, the sealing disc 31 will push the push plate 34, slide rod 35, fixing frame 36 and sealing ring 37 to move closer together. During the movement of 34, the angle between the push plate 34 and the contact ring 33 changes, pushing the slide rod 35 to slide closer together inside the groove. When the slide rod 35 slides, it pushes the fixing frame 36 to move closer together. During the movement of the fixing frame 36, it contacts the outer wall of the sealing ring 37, thereby fixing the sealing ring 37. At this time, the sealing ring 37 is in contact with the end of the sealing ring 101. At the same time, the force-bearing telescopic rod 32 retracts into place and limits the sealing disc 31. The sealing ring 37 effectively contacts the sealing ring 101, thereby improving the sealing performance of the sealing ring 101 to the inner wall of the vacuum pump body 1. Furthermore, the fixing frame 36 fixes the sealing ring 37, thereby improving the overall stability.As the driven rod 13 moves, it pushes the passive plate 56 to move closer together. When the passive plate 56 moves, it pulls the pull plate 55 to move closer together. Simultaneously, the pull plate 55 pulls the slider 52 to slide closer together on the inner wall of the groove plate 51. As the slider 52 slides, it pushes the limiting telescopic rod 58 to retract closer together. Simultaneously, the slider 52 moves, causing the push plate 53 to move closer together. As the push plate 53 moves, it pushes the reinforcing telescopic ring 54 to move closer together and retract. When the reinforcing telescopic ring 54 retracts to its final position, it contacts the other end of the sealing ring 101. At this moment, the limiting telescopic rod 58 has just retracted to its final position, thus... The slider 52, push plate 53, and reinforcing telescopic ring 54 are limited, effectively reinforcing the sealing ring 101 through the setting of the reinforcing telescopic ring 54. Together with the sealing ring 37, the two ends of the sealing ring 101 are reinforced, thereby improving the overall stability of the sealing ring 101. At this time, the power unit 8 is started, driving the rotating gear disk 6 to rotate. When the rotating gear disk 6 rotates, it will drive the rotating gear disk 7 to rotate simultaneously. When the rotating gear disk 6 and the rotating gear disk 7 rotate simultaneously, they will drive the rotating shaft 4 to rotate. During the rotation of the rotating shaft 4, the rotor 5 will rotate. When the rotor 5 rotates, it will draw in external air into the vacuum pump body 1, and then discharge it through the exhaust port, thus performing a cycle.

[0030] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combined sealing structure for a dry vacuum pump, comprising a vacuum pump body (1), an air inlet pipe (2) fixedly connected to the top of the vacuum pump body (1), a U-shaped plate (3) fixedly connected to the end of the vacuum pump body (1), a rotating shaft (4) rotatably connected to the inner wall of the U-shaped plate (3), a rotor (5) fixedly connected to the surface of the rotating shaft (4), two rotating shafts (4), a rotating gear disk one (6) and a rotating gear disk two (7) fixedly connected to the end of each of the two rotating shafts (4) away from the U-shaped plate (3), a power device (8) fixedly connected to the side of the rotating gear disk one (6) near the power device (8), a base (801) fixedly connected to the bottom of the vacuum pump body (1), a bidirectional threaded rod (9) rotatably connected to the surface of the base (801), and a sealing ring (101) fixedly connected to the inner wall of the vacuum pump body (1), characterized in that, Also includes; Leakage prevention mechanism (10), the leakage prevention mechanism (10) includes a detection device (16), a transmission line (17) is fixedly connected to the end of the detection device (16), and an alarm device (18) is fixedly connected to the end of the transmission line (17) away from the detection device (16). A sealing mechanism (30) includes a push plate (34), the end of which is rotatably connected to a slide rod (35), and the end of which is fixedly connected to a fixing frame (36). The reinforcement mechanism (50) includes a support ring (57), and a limit telescopic rod (58) is fixedly connected to the outer wall of the support ring (57).

2. The combined sealing structure of a dry vacuum pump according to claim 1, characterized in that: The lower surface of the vacuum pump body (1) is provided with an exhaust hole. The first rotating gear disk (6) and the second rotating gear disk (7) mesh with each other. The bottom of the air inlet pipe (2) is in communication with the inner wall of the vacuum pump body (1). The inner wall of the sealing ring (101) is in contact with the surface of the rotating shaft (4). There are two rotors (5), and the two rotors (5) are symmetrically arranged on the surface of the rotating shaft (4).

3. The combined sealing structure of a dry vacuum pump according to claim 2, characterized in that: The leak-proof mechanism (10) includes a threaded ring (11), a right-angle plate (12) is fixedly connected to the surface of the threaded ring (11), a driven rod (13) is fixedly connected to the end of the right-angle plate (12) away from the threaded ring (11), a pusher (14) is fixedly connected to the surface of the driven rod (13), and a leak-proof ring (15) is fixedly connected to the end of the pusher (14).

4. The combined sealing structure of a dry vacuum pump according to claim 3, characterized in that: The inner wall of the threaded ring (11) is threaded to the surface of the bidirectional threaded rod (9), the surface of the detection device (16) is fixedly connected to the inner wall of the leak-proof ring (15), the bottom of the alarm device (18) is fixedly connected to the top of the vacuum pump body (1), and the number of leak-proof rings (15) is four, divided into two groups of two, and the four leak-proof rings (15) are symmetrically arranged at the end of the push frame (14).

5. The combined sealing structure of a dry vacuum pump according to claim 4, characterized in that: The sealing mechanism (30) includes a sealing disc (31), a force-bearing telescopic rod (32) is fixedly connected to the surface of the sealing disc (31), a contact ring (33) is fixedly connected to the end of the force-bearing telescopic rod (32) away from the sealing disc (31), a contact hole is opened on the surface of the sealing disc (31), and a sealing ring (37) is fixedly connected to the inner wall of the contact hole.

6. The combined sealing structure of a dry vacuum pump according to claim 5, characterized in that: The inner wall of the leak-proof ring (15) is fixedly connected to the outer wall of the sealing disc (31). The end of the push plate (34) away from the slide rod (35) is rotatably connected to the inner wall of the contact ring (33). The surface of the sealing disc (31) is provided with a groove. The inner wall of the groove is slidably connected to the slide rod (35). The inner wall of the contact hole is in contact with the inner wall of the sealing ring (37) and the surface of the rotating shaft (4).

7. The combined sealing structure of a dry vacuum pump according to claim 6, characterized in that: The reinforcement mechanism (50) includes a grooved plate (51), a slider (52) is slidably connected to the inner wall of the grooved plate (51), a push plate (53) is fixedly connected to both ends of the slider (52), a reinforcement telescopic ring (54) is fixedly connected to the end of the push plate (53) away from the slider (52), a pull plate (55) is hinged to the surface of the slider (52), and a passive plate (56) is hinged to the end of the pull plate (55) away from the slider (52).

8. The combined sealing structure of a dry vacuum pump according to claim 7, characterized in that: The driven rod (13) is close to one end of the passive plate (56) and passes through the end of the vacuum pump body (1), and is fixedly connected to the surface of the passive plate (56). The surface of the groove plate (51) is fixedly connected to the inner wall of the vacuum pump body (1). The inner wall of the support ring (57) is in contact with the surface of the driven rod (13). The surface of the reinforcing telescopic ring (54) is in contact with the inner wall of the vacuum pump body (1).

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