Dry type mechanical seal vacuum pump

Abstract

The invention relates to the technical field of dry-type mechanical seal vacuum pumps, and discloses a dry-type mechanical seal vacuum pump which comprises a workbench and a dry-type mechanical seal vacuum pump body, and cooling assemblies are arranged on the right side and the upper side of the dry-type mechanical seal vacuum pump body correspondingly. A dust removal assembly is arranged on the left side of the dry type mechanical seal vacuum pump body, through the arranged cooling assembly, an operator starts a first motor to drive a forward threaded rod to rotate, a driven belt wheel and a reverse threaded rod are driven to rotate through a driving belt wheel and a belt, and two sets of air cooling fans move on the outer walls of two sets of threaded rods; meanwhile, a water pump is started to pump cold water in a water cooling box to a cooling pipe, under the synergistic effect of air cooling and water cooling, the temperature of the dry mechanical seal vacuum pump body can be controlled within a suitable range, normal performance of all components is maintained, stable operation of equipment is guaranteed, and the occurrence rate of operation faults is reduced; the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of dry mechanical seal vacuum pumps, in particular to a dry mechanical seal vacuum pump. Background Art

[0002] The oil-sealed vacuum pumps that were widely used in the early days rely on oil for sealing, lubrication and removing operating heat. However, this type of vacuum pump has many thorny problems. On the one hand, oil is prone to leakage, which not only causes oil pollution in the workplace, but also soils peripheral equipment, products and even the ground, increasing cleaning and maintenance costs. The accumulated leakage may also affect the stability of the pump's performance. On the other hand, oil vapor backflow will mix into the pumped gas system. For processes that require a high-purity gas environment, such as electronic chip manufacturing and high-precision optical coating, trace oil vapor contamination is enough to cause a significant drop in product yield, seriously restricting its adaptability in high-end and fine industrial scenarios.

[0003] After searching, the applicant found that a Chinese patent disclosed a "dry mechanical seal vacuum pump", and its publication (announcement) number is "CN114922980A". This patent mainly adopts contact sealing between a dynamic ring seal component and a static ring seal component, which has good sealing effect and small leakage. However, this patent cannot cool down the heat generated by the operation of the dry mechanical seal vacuum pump in time, and cannot maintain the working temperature of the dry mechanical seal vacuum pump in an appropriate range. Therefore, in actual use, it may affect the performance and stability of the dry mechanical seal vacuum pump. For this reason, we propose a dry mechanical seal vacuum pump. Summary of the invention

[0004] The object of the present invention is to provide a dry mechanical seal vacuum pump to solve the problem proposed in the above background technology that the heat generated by the operation of the dry mechanical seal vacuum pump cannot be cooled down in time, and the working temperature of the dry mechanical seal vacuum pump cannot be maintained in an appropriate range, which may affect the performance and stability of the dry mechanical seal vacuum pump during actual use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dry mechanical seal vacuum pump, comprising a workbench and a dry mechanical seal vacuum pump body, a cooling assembly is arranged on the right and the top of the dry mechanical seal vacuum pump body, a dust removal assembly is arranged on the left of the dry mechanical seal vacuum pump body, a dust collection assembly is arranged on the top of the workbench and below the dry mechanical seal vacuum pump body, the cooling assembly comprises a fixed plate, a first motor, a threaded block, an air-cooling fan, a water cooling box and a support block, the first motor is connected to a driving pulley through a forward threaded rod, the driving pulley is connected to a driven pulley through a belt, the driven pulley is connected to a fixed block through a reverse threaded rod, the water cooling box is connected to a water pump through an input pipe, the water pump is connected to a cooling pipe and a circulation pipe through an output pipe, the dust removal assembly comprises a support plate and a handle, the support plate is connected to a bidirectional threaded rod through a second motor, the bidirectional threaded rod is connected to a dust removal cotton piece through a moving block, a slide groove is provided on the top of the workbench, a slider is fixedly connected to the bottom of the support plate, and the slider is slidably connected to the inside of the slide groove.

[0006] As a further solution of the present invention, the fixed plate is fixedly installed on the top right side of the workbench, and the fixed plates are arranged in two groups. The first motor is fixedly installed on the outer wall of one group of fixed plates, one end of the forward threaded rod is fixedly connected to the output shaft of the first motor, and one end of the forward threaded rod away from the first motor is fixedly connected to the surface of the driving pulley, and the driving pulley is rotatably connected to the inner wall of the other group of fixed plates.

[0007] As a further solution of the present invention, the driving pulley and the driven pulley are connected by a belt drive, the driven pulley is rotatably connected to the inner wall of another group of fixed plates, one end of the reverse threaded rod is fixedly connected to the surface of the driven pulley, the end of the reverse threaded rod away from the driven pulley is rotatably connected to the inside of the fixed block, the fixed block is fixedly installed on the outer wall of a group of fixed plates, the threaded blocks are provided in two groups, and the two groups of threaded blocks are respectively threadedly connected to the outer walls of the forward threaded rod and the reverse threaded rod, and the air-cooling fans are provided in two groups, and the two groups of air-cooling fans are respectively fixedly installed on the surfaces of the two groups of threaded blocks.

[0008] As a further solution of the present invention, the water cooling box is fixedly installed on the top rear side of the workbench, one end of the input pipe is fixedly connected to the inner wall of the water cooling box, the other end of the input pipe is fixedly connected to the input port of the water pump, the water pump is fixedly installed on the top of the workbench and located in front of the water cooling box, and one end of the output pipe is fixedly connected to the output port of the water pump.

[0009] As a further solution of the present invention, the other end of the output pipe is fixedly connected to the inner wall of the cooling pipe, one end of the circulation pipe is fixedly connected to the inner wall of the cooling pipe, and the other end of the circulation pipe is fixedly connected to the inner wall of the water cooling box.

[0010] As a further solution of the present invention, the support block is fixedly installed on the top of the workbench and located in front of the water pump, the top inner wall of the support block is fixedly connected to the outer wall of the cooling pipe, and the bottom inner wall of the support block is fixedly connected to the outer wall of the circulation pipe.

[0011] As a further solution of the present invention, the support plate is fixedly installed on the top left side of the workbench, the second motor is fixedly installed on the surface of the support plate, one end of the bidirectional threaded rod is fixedly connected to the output shaft of the second motor, and the other end of the bidirectional threaded rod is rotatably connected to the inner wall of the support plate.

[0012] As a further solution of the present invention, the moving block is threadedly connected to the outer wall of the bidirectional threaded rod, the dust removal cotton sheet is fixedly installed on the circumferential surface of the moving block, the handle is fixedly installed on the top of the support plate, and the dust removal cotton sheet is in contact with the surface of the dry mechanical seal vacuum pump body.

[0013] As a further solution of the present invention, the dust collection assembly includes an electric telescopic rod and a collection box. The electric telescopic rod is fixedly installed on the top of the workbench. A placement groove is opened on the top of the workbench and to the right of the electric telescopic rod.

[0014] As a further solution of the present invention, a sliding rod is fixedly installed inside the accommodating groove, a telescopic spring is sleeved on the outside of the sliding rod, the collecting box is fixedly installed on one end of the telescopic spring close to the dry mechanical seal vacuum pump body, a collecting frame is provided inside the collecting box, and one end of the electric telescopic rod is fixedly connected to the surface of the collecting box.

[0015] Technical effects and advantages of the present invention: Through the cooling assembly, the operator starts the first motor to drive the forward threaded rod to rotate, and drives the driven pulley and the reverse threaded rod to rotate through the active pulley and the belt, so that the two sets of air-cooling fans move on the outer walls of the two sets of threaded rods to cool the upper and lower parts of the dry mechanical seal vacuum pump body. At the same time, the water pump is started to pump the cold water in the water cooling box to the cooling pipe. With the synergistic effect of air cooling and water cooling, the temperature of the dry mechanical seal vacuum pump body can be controlled within an appropriate range, maintaining the normal performance of each component, ensuring the stable and continuous operation of the equipment, reducing the occurrence rate of operating failures and the number of shutdowns for maintenance, and extending the service life of the equipment. Through the dust removal assembly, the operator can start the second motor to drive the bidirectional threaded rod to rotate, driving the two sets of moving blocks and dust removal cotton sheets to move accordingly, so as to scrape the dust on the surface of the dry mechanical seal vacuum pump body. This can prevent dust from accumulating on the surface for a long time, avoid damage to its internal parts, and ensure the smooth operation of the dry mechanical seal vacuum pump body. Through the dust collection assembly, the staff can control the extension and retraction of the electric telescopic rod to pull the collection box out from the supporting platform at the bottom of the dry mechanical seal vacuum pump body. At this time, the dust falls into the collection frame. Then the staff pulls out the collection box and cleans the dust in the collection frame to ensure that the dust is disposed of in an orderly manner and keep the working environment around the equipment clean. After cleaning, the electric telescopic rod is controlled to return to its original position. During the process, the telescopic spring extends and retracts synchronously with the electric telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall local structure of the present invention; Figure 3 This is one of the schematic diagrams of the cooling assembly part of the present invention; Figure 4 This is the second schematic diagram of the cooling component part of the present invention; Figure 5 The third schematic diagram of the cooling component part of the present invention; Figure 6 This is a fourth schematic diagram of the structure of the cooling assembly of the present invention; Figure 7 This is one of the schematic diagrams of the partial structure of the dust removal component of the present invention; Figure 8 This is the second schematic diagram of the structure of the dust removal component of the present invention; Fig. 9 This is one of the partial structural schematic diagrams of the dust collection assembly of the present invention; Fig.10 This is the second partial structural schematic diagram of the dust collection component of the present invention.

[0017] In the figure: 1, workbench; 2, dry mechanical seal vacuum pump body; 3, cooling assembly; 301, fixing plate; 302, first motor; 303, positive threaded rod; 304, driving pulley; 305, belt; 306, driven pulley; 307, reverse threaded rod; 308, fixing block; 309, threaded block; 310, air cooling fan; 311, water cooling box; 312, input pipe; 313, water pump; 314, output pipe; 315 , cooling pipe; 316, circulation pipe; 317, support block; 4, dust removal assembly; 401, support plate; 402, second motor; 403, bidirectional threaded rod; 404, moving block; 405, dust removal cotton sheet; 406, handle; 407, slider; 408, slide; 5, dust collection assembly; 501, electric telescopic rod; 502, collection box; 503, slide rod; 504, telescopic spring; 505, collection frame; 506, placement slot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0019] Please refer to the attached Figure 1 , Attachment Figure 3 - Attachment Figure 6A dry mechanical seal vacuum pump, a workbench 1 and a dry mechanical seal vacuum pump body 2, a cooling assembly 3 is arranged on the right and above the dry mechanical seal vacuum pump body 2, the cooling assembly 3 includes a fixing plate 301, a first motor 302, a threaded block 309, an air-cooling fan 310, a water cooling box 311 and a support block 317, the first motor 302 is connected to a driving pulley 304 through a forward threaded rod 303, the driving pulley 304 is connected to a driven pulley 306 through a belt 305, the driven pulley 306 is connected to a fixing block 308 through a reverse threaded rod 307, the water cooling box 311 is connected to a water pump 313 through an input pipe 312, and the water pump 313 is connected to a water pump 313 through an output pipe 314 is connected with a cooling pipe 315 and a circulation pipe 316. The fixed plate 301 is fixedly installed on the top right side of the workbench 1. The fixed plate 301 is provided with two groups. The first motor 302 is fixedly installed on the outer wall of one group of fixed plates 301. One end of the positive threaded rod 303 is fixedly connected to the output shaft of the first motor 302. The end of the positive threaded rod 303 away from the first motor 302 is fixedly connected to the surface of the driving pulley 304. The driving pulley 304 is rotatably connected to the inner wall of the other group of fixed plates 301. The driving pulley 304 is connected to the driven pulley 306 through the belt 305. The driven pulley 306 is rotatably connected to the inner wall of the other group of fixed plates 301. The reverse threaded rod 303 is fixedly connected to the output shaft of the first motor 302 ... One end of 07 is fixedly connected to the surface of the driven pulley 306, and the end of the reverse threaded rod 307 away from the driven pulley 306 is rotatably connected to the inside of the fixed block 308. The fixed block 308 is fixedly installed on the outer wall of a set of fixed plates 301. There are two groups of threaded blocks 309, and the two groups of threaded blocks 309 are respectively threadedly connected to the outer walls of the forward threaded rod 303 and the reverse threaded rod 307. There are two groups of air-cooling fans 310, and the two groups of air-cooling fans 310 are respectively fixedly installed on the surfaces of the two groups of threaded blocks 309. The water cooling box 311 is fixedly installed on the top rear side of the workbench 1. One end of the input pipe 312 is fixedly connected to the inner wall of the water cooling box 311, and the other end of the input pipe 312 It is fixedly connected to the input port of the water pump 313, the water pump 313 is fixedly installed on the top of the workbench 1 and is located in front of the water cooling box 311, one end of the output pipe 314 is fixedly connected to the output port of the water pump 313, the other end of the output pipe 314 is fixedly connected to the inner wall of the cooling pipe 315, one end of the circulation pipe 316 is fixedly connected to the inner wall of the cooling pipe 315, the other end of the circulation pipe 316 is fixedly connected to the inner wall of the water cooling box 311, the support block 317 is fixedly installed on the top of the workbench 1 and is located in front of the water pump 313, the top inner wall of the support block 317 is fixedly connected to the outer wall of the cooling pipe 315, and the bottom inner wall of the support block 317 is fixedly connected to the outer wall of the circulation pipe 316.

[0020] The two groups of air cooling fans 310 are directed to the upper and lower parts of the dry mechanical seal vacuum pump body 2 to perform air cooling operations, thereby allowing the cooling air to flow more evenly through the surface of the dry mechanical seal vacuum pump body 2, thereby improving the cooling effect and avoiding local overheating.

[0021] Specifically, through the provided cooling assembly 3, the operator starts the first motor 302 to drive the forward threaded rod 303 to rotate, and drives the driven pulley 306 and the reverse threaded rod 307 to rotate through the active pulley 304 and the belt 305, so that the two groups of air-cooling fans 310 move on the outer walls of the two groups of threaded rods, and the upper and lower parts of the dry mechanical seal vacuum pump body 2 are cooled by air. At the same time, the water pump 313 is started to pump the cold water in the water cooling box 311 to the cooling pipe 315. With the synergistic effect of air cooling and water cooling, the temperature of the dry mechanical seal vacuum pump body 2 can be controlled within an appropriate range, thereby ensuring the normal performance of each component, ensuring that the equipment can operate stably and continuously, reducing the occurrence rate of operating failures, and extending the service life of the equipment. Embodiment 2

[0022] Please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 7 And attached Figure 8 , and on the basis of Example 1, it is further obtained that a dust removal component 4 is arranged on the left side of the dry mechanical seal vacuum pump body 2, and the dust removal component 4 includes a support plate 401 and a handle 406, the support plate 401 is connected to a bidirectional threaded rod 403 through a second motor 402, and the bidirectional threaded rod 403 is connected to a dust removal cotton piece 405 through a moving block 404, a slide groove 408 is opened on the top of the workbench 1, and a slider 407 is fixedly connected to the bottom of the support plate 401, and the slider 407 is slidably connected to the inside of the slide groove 408, and the support plate 401 is fixedly installed on On the top left side of the workbench 1, the second motor 402 is fixedly mounted on the surface of the support plate 401, one end of the bidirectional threaded rod 403 is fixedly connected to the output shaft of the second motor 402, the other end of the bidirectional threaded rod 403 is rotatably connected to the inner wall of the support plate 401, the moving block 404 is threadedly connected to the outer wall of the bidirectional threaded rod 403, the dust removal cotton sheet 405 is fixedly mounted on the circumferential surface of the moving block 404, the handle 406 is fixedly mounted on the top of the support plate 401, and the dust removal cotton sheet 405 fits the surface of the dry mechanical seal vacuum pump body 2.

[0023] There are two groups of moving blocks 404 and dust-removing cotton sheets 405. When the two carry out dust removal work on the surface of the dry mechanical seal vacuum pump body 2, a leakage hole groove is opened on the bottom support platform of the dry mechanical seal vacuum pump body 2 to facilitate dust falling. The dust falls into the collection box 502 and the collection frame 505 through the leakage hole groove. At the same time, when the slider 407 slides in the slide groove 408, the dust-removing cotton sheets 405 will not touch the circulation pipe 316.

[0024] Specifically, through the dust removal component 4, the operator can start the second motor 402 to drive the bidirectional threaded rod 403 to rotate, thereby driving the two sets of moving blocks 404 and the dust removal cotton sheets 405 to move accordingly, and scrape off the dust on the surface of the dry mechanical seal vacuum pump body 2. This can prevent dust from accumulating on the surface for a long time, avoid damage to its internal parts, and ensure that the dry mechanical seal vacuum pump body 2 can operate smoothly. Embodiment 3

[0025] Please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Fig. 9 And attached Fig.10 On the basis of the second embodiment, it is further obtained that a dust collection assembly 5 is arranged on the top of the workbench 1 and below the dry mechanical seal vacuum pump body 2, and the dust collection assembly 5 includes an electric telescopic rod 501 and a collection box 502, the electric telescopic rod 501 is fixedly installed on the top of the workbench 1, and a placement groove 506 is opened on the top of the workbench 1 and on the right side of the electric telescopic rod 501, a slide bar 503 is fixedly installed inside the placement groove 506, and a telescopic spring 504 is sleeved on the outside of the slide bar 503, and the collection box 502 is fixedly installed on one end of the telescopic spring 504 close to the dry mechanical seal vacuum pump body 2, a collection frame 505 is arranged inside the collection box 502, and one end of the electric telescopic rod 501 is fixedly connected to the surface of the collection box 502.

[0026] The collecting box 502 moves forward and backward under the telescopic action of the electric telescopic rod 501 . During the movement, the collecting box 502 will not touch the supporting legs of the bottom supporting platform of the dry mechanical seal vacuum pump body 2 .

[0027] Specifically, through the dust collection component 5, the staff can control the extension and retraction of the electric telescopic rod 501, and pull out the collection box 502 from the supporting platform at the bottom of the dry mechanical seal vacuum pump body 2. At this time, the dust falls into the collection frame 505. Then the staff can pull out the collection box 502 and clean the dust in the collection frame 505. This can ensure that the dust is disposed of in an orderly manner and the working environment around the equipment is kept clean. After cleaning, the electric telescopic rod 501 is controlled to return to its original position. During the process, the telescopic spring 504 extends and retracts synchronously with the electric telescopic rod 501.

[0028] Working principle of the present invention: The present invention is a dry mechanical seal vacuum pump. The operator turns on the first motor 302, and the first motor 302 drives the forward threaded rod 303 to rotate. The rotation of the forward threaded rod 303 synchronously drives the driving pulley 304 fixedly connected thereto to rotate. Through the belt 305 transmission, the driving pulley 304 drives the driven pulley 306 to rotate, and then drives the reverse threaded rod 307 to rotate. When the forward threaded rod 303 and the reverse threaded rod 307 rotate, the two groups of threaded blocks 309 respectively threadedly connected thereto move toward or in the opposite direction, so that the two groups of air-cooling fans 310 fixedly installed on the surface of the threaded block 309 have an effect on the dry mechanical seal. The upper and lower parts of the vacuum pump body 2 are air-cooled to make the cooling air flow evenly through the surface of the dry mechanical seal vacuum pump body 2. At the same time, the staff starts the water pump 313. The water pump 313 extracts cold water in the water cooling box 311 through the input pipe 312, and transports it to the cooling pipe 315 through the output pipe 314, and then flows back to the water cooling box 311 through the circulation pipe 316 to realize the water cooling cycle. The synergistic effect of air cooling and water cooling can control the temperature of the dry mechanical seal vacuum pump body 2 within a suitable range to ensure the stable operation of the equipment. When dust accumulates on the surface of the dry mechanical seal vacuum pump body 2, the operator starts the second motor 402, and the second motor 402 drives the double The threaded rod 403 rotates, driving the two sets of moving blocks 404 threadedly connected to the outer wall of the two-way threaded rod 403 to move along the two-way threaded rod 403, and the dust removal cotton piece 405 fixedly installed on the circumferential surface of the moving block 404 moves accordingly to scrape and clean the dust on the surface of the dry mechanical seal vacuum pump body 2. When the dry mechanical seal vacuum pump body 2 does not need to be dusted, the dust removal component 4 can be moved to one side under the action of the slider 407 and the slide groove 408. The dust removal cotton piece 405 will not touch the circulation pipe 316, and the scraped dust falls into the collection box 502 and the dust removal box 503 through the leakage hole groove opened on the bottom support platform of the dry mechanical seal vacuum pump body 2. When the collected dust needs to be cleaned in the collection frame 505, the staff operates the electric telescopic rod 501 to perform a telescopic action. The electric telescopic rod 501 extends, pulls the collection box 502 to overcome the elastic force of the telescopic spring 504, and is pulled a certain distance from the support platform at the bottom of the dry mechanical seal vacuum pump body 2. The dust falls into the collection frame 505 inside the collection box 502. Then the staff pulls out the collection box 502 and cleans the dust in the collection frame 505. After cleaning, put the collection box 502 back to its original position, operate the electric telescopic rod 501 to contract, and the telescopic spring 504 restores its deformation, so that the collection box 502 returns to its initial position.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry mechanical seal vacuum pump, comprising a workbench (1) and a dry mechanical seal vacuum pump body (2), characterized in that: A cooling assembly (3) is arranged on the right and above the dry mechanical seal vacuum pump body (2), a dust removal assembly (4) is arranged on the left of the dry mechanical seal vacuum pump body (2), and a dust collection assembly (5) is arranged on the top of the workbench (1) and below the dry mechanical seal vacuum pump body (2); The cooling assembly (3) comprises a fixing plate (301), a first motor (302), a threaded block (309), an air-cooling fan (310), a water-cooling box (311) and a support block (317); the first motor (302) is connected to a driving pulley (304) via a forward threaded rod (303); the driving pulley (304) is connected to a driven pulley (306) via a belt (305); the driven pulley (306) is connected to a fixing block (308) via a reverse threaded rod (307); the water-cooling box (311) is connected to a water pump (313) via an input pipe (312); the water pump (313) is connected to a cooling pipe (315) and a circulation pipe (316) via an output pipe (314); The dust removal assembly (4) comprises a support plate (401) and a handle (406); the support plate (401) is connected to a bidirectional threaded rod (403) via a second motor (402); the bidirectional threaded rod (403) is connected to a dust removal cotton sheet (405) via a moving block (404); a slide groove (408) is provided on the top of the workbench (1); a slider (407) is fixedly connected to the bottom of the support plate (401); and the slider (407) is slidably connected to the inside of the slide groove (408).

2. A dry mechanical seal vacuum pump according to claim 1, characterized in that: The fixed plate (301) is fixedly mounted on the top right side of the workbench (1); the fixed plate (301) is provided with two groups; the first motor (302) is fixedly mounted on the outer wall of one group of fixed plates (301); one end of the forward threaded rod (303) is fixedly connected to the output shaft of the first motor (302); one end of the forward threaded rod (303) away from the first motor (302) is fixedly connected to the surface of a driving pulley (304); and the driving pulley (304) is rotatably connected to the inner wall of the other group of fixed plates (301).

3. A dry mechanical seal vacuum pump according to claim 2, characterized in that: The driving pulley (304) and the driven pulley (306) are connected to each other via a belt (305); the driven pulley (306) is rotatably connected to the inner wall of another set of fixed plates (301); one end of the reverse threaded rod (307) is fixedly connected to the surface of the driven pulley (306); one end of the reverse threaded rod (307) away from the driven pulley (306) is rotatably connected to the inside of a fixed block (308); the fixed block (308) is fixedly mounted on the outer wall of a set of fixed plates (301); two groups of threaded blocks (309) are provided; the two groups of threaded blocks (309) are respectively threadedly connected to the outer walls of the forward threaded rod (303) and the reverse threaded rod (307); and two groups of air-cooling fans (310) are provided; the two groups of air-cooling fans (310) are respectively fixedly mounted on the surfaces of the two groups of threaded blocks (309).

4. A dry mechanical seal vacuum pump according to claim 3, characterized in that: The water cooling box (311) is fixedly mounted on the top rear side of the workbench (1); one end of the input pipe (312) is fixedly connected to the inner wall of the water cooling box (311); the other end of the input pipe (312) is fixedly connected to the input port of a water pump (313); the water pump (313) is fixedly mounted on the top of the workbench (1) and located in front of the water cooling box (311); and one end of the output pipe (314) is fixedly connected to the output port of the water pump (313).

5. A dry mechanical seal vacuum pump according to claim 4, characterized in that: The other end of the output pipe (314) is fixedly connected to the inner wall of the cooling pipe (315), one end of the circulation pipe (316) is fixedly connected to the inner wall of the cooling pipe (315), and the other end of the circulation pipe (316) is fixedly connected to the inner wall of the water cooling box (311).

6. A dry mechanical seal vacuum pump according to claim 1, characterized in that: The support block (317) is fixedly mounted on the top of the workbench (1) and is located in front of the water pump (313); the top inner wall of the support block (317) is fixedly connected to the outer wall of the cooling pipe (315); and the bottom inner wall of the support block (317) is fixedly connected to the outer wall of the circulation pipe (316).

7. A dry mechanical seal vacuum pump according to claim 1, characterized in that: The support plate (401) is fixedly mounted on the top left side of the workbench (1); the second motor (402) is fixedly mounted on the surface of the support plate (401); one end of the bidirectional threaded rod (403) is fixedly connected to the output shaft of the second motor (402); and the other end of the bidirectional threaded rod (403) is rotatably connected to the inner wall of the support plate (401).

8. A dry mechanical seal vacuum pump according to claim 1, characterized in that: The moving block (404) is threadedly connected to the outer wall of the bidirectional threaded rod (403), the dust removal cotton sheet (405) is fixedly mounted on the circumferential surface of the moving block (404), the handle (406) is fixedly mounted on the top of the support plate (401), and the dust removal cotton sheet (405) is in contact with the surface of the dry mechanical seal vacuum pump body (2).

9. A dry mechanical seal vacuum pump according to claim 1, characterized in that: The dust collection assembly (5) comprises an electric telescopic rod (501) and a collection box (502); the electric telescopic rod (501) is fixedly mounted on the top of the workbench (1); and a placement groove (506) is provided on the top of the workbench (1) and to the right of the electric telescopic rod (501).

10. A dry mechanical seal vacuum pump according to claim 9, characterized in that: A sliding rod (503) is fixedly installed inside the placement groove (506), and a telescopic spring (504) is sleeved outside the sliding rod (503). The collection box (502) is fixedly installed on one end of the telescopic spring (504) close to the dry mechanical seal vacuum pump body (2). A collection frame (505) is arranged inside the collection box (502), and one end of the electric telescopic rod (501) is fixedly connected to the surface of the collection box (502).

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