Vacuum filter for dry vacuum pump

Abstract

The utility model relates to the technical field of dry vacuum pumps, and discloses a vacuum filter for a dry vacuum pump, which comprises a bottom plate and a filter cartridge, the left side of the top of the bottom plate is fixedly connected with a filter box, the top of the filter box is fixedly connected with a placing box, and the right side of the top of the bottom plate is fixedly connected with a transition box. And clamping seats are fixedly connected to the top and the bottom of the inner wall of the filter box. According to the vacuum filter for the dry vacuum pump, the filter screen is arranged, gas can be preliminarily filtered, a crankshaft is matched with a movable sleeve and a connecting rod in the rotating process, a scraping plate is driven to move up and down according to the crank mechanism principle, and dust accumulated on the windward side of the filter screen is scraped away in cycles; the influence of excessive dust accumulated on the windward side of the filter screen on the filtering efficiency is avoided, so that air can smoothly pass through, the efficient filtering effect is kept, the overall service life is prolonged, the replacement and maintenance cost is reduced, and the normal operation of filtering equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of dry vacuum pumps, in particular to a vacuum filter used for dry vacuum pumps. Background Art

[0002] A dry screw vacuum pump is a device for extracting gas. Similar to the working principle of a screw compressor, the working process of a dry screw vacuum pump can be divided into three processes: suction, compression and exhaust. Before the dry screw vacuum pump's exhaust operation, the extracted gas needs to be filtered with a filter device, otherwise the solid and liquid impurities in the gas will cause damage to the interior of the vacuum pump.

[0003] Although the existing technology has met the users' needs to a certain extent, there are still certain defects in the use process. The specific problems are as follows: during the filtration process, a filter is needed to retain and adsorb the dust and harmful substances mixed in the gas. After the filter is used for a long time, dust is easily accumulated on its surface. Excessive dust accumulation will hinder the air flow through the filter, resulting in a decrease in filtration efficiency and an inability to effectively remove harmful particles and pollutants, thereby affecting the normal working state of the filtration equipment. At the same time, the accumulated dust will increase the resistance of the gas through the filter, which will make the filtration device require more energy to maintain normal exhaust operation, increasing the energy consumption and operating costs of the equipment.

[0004] In order to solve the above problems, we have made improvements and proposed a vacuum filter for a dry vacuum pump. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a vacuum filter for a dry vacuum pump, comprising a base plate and a filter cartridge, a filter box is fixedly connected to the left side of the top of the base plate, a placement box is fixedly connected to the top of the filter box, a transition box is fixedly connected to the right side of the top of the base plate, the top and bottom of the inner wall of the filter box are fixedly connected to a holder, a filter screen is clamped in the inner cavity of the holder, a servo motor is fixedly connected to the front surface of the placement box, a crankshaft is fixedly connected to the output end of the servo motor, a movable sleeve is movably connected to the surface of the crankshaft, the bottom of the movable sleeve is movably connected to a connecting rod via a rotating shaft, the bottom of the connecting rod is movably connected to a mounting seat via a rotating shaft, a scraper is clamped in the inner cavity of the mounting seat, and the right side of the scraper is in contact with the left side of the filter screen.

[0006] Preferably, a longitudinal slide groove is provided on the back side of the inner wall of the filter box, a longitudinal slider is fixedly connected to the back side of the left side of the mounting seat, and the back side of the longitudinal slider is slidably connected to the inner cavity of the longitudinal slide groove.

[0007] Preferably, the left side of the filter box is connected to an air inlet pipe, the right side of the filter box is connected to a connecting pipe, and the right side of the connecting pipe is connected to the bottom of the left side of the transition box.

[0008] Preferably, a sealing ring is fixedly connected to the left side of the filter cartridge, a mounting plate is fixedly connected to the left side of the sealing ring, a limiting plate is fixedly connected to the top and bottom of the inner wall of the filter box, and a mounting box is fixedly connected to the right side of the limiting plate.

[0009] Preferably, a return spring is fixedly connected to the right side of the inner cavity of the installation box, a movable block is fixedly connected to the left side of the return spring, an insert block is fixedly connected to the left side of the movable block, and the left side of the insert block sequentially penetrates the limit plate, the sealing ring and the inner surface of the mounting plate and extends to the left side of the mounting plate.

[0010] Preferably, the top and bottom of the inner wall of the installation box are provided with transverse sliding grooves, the top and bottom of the movable block are fixedly connected with transverse sliders, the outer side of the transverse slider is slidably connected to the inner cavity of the transverse sliding groove, the front surface of the movable block is fixedly connected with a pull rod, the front surface of the installation box is provided with a through groove, and the front side of the pull rod passes through the inner cavity of the through groove and extends to the front side of the installation box.

[0011] Compared with the prior art, the utility model provides a vacuum filter for a dry vacuum pump, which has the following beneficial effects:

[0012] 1. The vacuum filter for the dry vacuum pump can perform preliminary filtration on the gas by setting a filter screen. The crankshaft cooperates with the movable sleeve and the connecting rod during the rotation process, and uses the crank mechanism principle to drive the scraper to move up and down, repeatedly, so as to scrape off the dust accumulated on the windward side of the filter screen, so as to avoid excessive dust accumulation on the windward side of the filter screen affecting the filtration efficiency, thereby ensuring smooth passage of air and maintaining high-efficiency filtration effect, extending the overall service life, reducing replacement and maintenance costs, and ensuring the normal operation of the filtration equipment.

[0013] 2. The vacuum filter for the dry vacuum pump can further filter the gas by setting a filter cartridge to improve the overall filtering effect. The reset spring uses the elastic force to drive the movable block to move to the left, and the movable block drives the insert block to move to the left, so as to connect the mounting plate and the limit plate, thereby facilitating the fixation of the filter cartridge and facilitating the subsequent disassembly of the filter cartridge for cleaning or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter box of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the placement box of the utility model in the left-side state;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the installation box of the utility model.

[0019] Among them: 1. bottom plate; 2. filter box; 3. placement box; 4. transition box; 5. intake pipe; 6. holder; 7. filter screen; 8. limit plate; 9. installation box; 10. filter cartridge; 11. installation plate; 12. connecting pipe; 13. installation seat; 14. scraper; 15. longitudinal slide groove; 16. longitudinal slider; 17. through groove; 18. connecting rod; 19. servo motor; 20. crankshaft; 21. movable sleeve; 22. reset spring; 23. movable block; 24. plug-in block; 25. pull rod; 26. transverse slide groove; 27. transverse slider; 28. sealing ring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 A vacuum filter for a dry vacuum pump comprises a bottom plate 1 and a filter cartridge 10. A filter box 2 is fixedly connected to the left side of the top of the bottom plate 1. A placement box 3 is fixedly connected to the top of the filter box 2. A transition box 4 is fixedly connected to the right side of the top of the bottom plate 1. A holder 6 is fixedly connected to the top and bottom of the inner wall of the filter box 2. A filter screen 7 is clamped in the inner cavity of the holder 6. A servo motor 19 is fixedly connected to the front surface of the placement box 3. A crankshaft 20 is fixedly connected to the output end of the servo motor 19. The crankshaft 20 The surface of the filter box 2 is movably connected with a movable sleeve 21, the bottom of the movable sleeve 21 is movably connected with a connecting rod 18 through a rotating shaft, the bottom of the connecting rod 18 is movably connected with a mounting seat 13 through a rotating shaft, the inner cavity of the mounting seat 13 is clamped with a scraper 14, and the right side of the scraper 14 is in contact with the left side of the filter screen 7, a longitudinal slide groove 15 is opened on the back side of the inner wall of the filter box 2, and a longitudinal slider 16 is fixedly connected to the back side of the left side of the mounting seat 13, and the back side of the longitudinal slider 16 is slidably connected to the inner cavity of the longitudinal slide groove 15.

[0022] Through the above technical scheme, by setting the filter 7, the gas can be initially filtered, and the crankshaft 20 cooperates with the movable sleeve 21 and the connecting rod 18 during the rotation process, and utilizes the crank mechanism principle to drive the scraper 14 to move up and down, repeatedly, so as to scrape off the dust accumulated on the windward surface of the filter 7, and avoid excessive dust accumulation on the windward surface of the filter 7 affecting the filtering efficiency, thereby ensuring smooth passage of air and maintaining high-efficiency filtering effect, extending the overall service life, reducing replacement and maintenance costs, and ensuring the normal operation of the filtering equipment. By setting the longitudinal slide groove 15 and the longitudinal slider 16, the smoothness of the mounting seat 13 and the scraper 14 during the up and down movement can be effectively improved.

[0023] Specifically, the left side of the filter box 2 is connected to the air inlet pipe 5, the right side of the filter box 2 is connected to the connecting pipe 12, and the right side of the connecting pipe 12 is connected to the bottom of the left side of the transition box 4, the left side of the filter cartridge 10 is fixedly connected to the sealing ring 28, the left side of the sealing ring 28 is fixedly connected to the mounting plate 11, the top and bottom of the inner wall of the filter box 2 are fixedly connected to the limit plate 8, the right side of the limit plate 8 is fixedly connected to the mounting box 9, the right side of the inner cavity of the mounting box 9 is fixedly connected to the return spring 22, the left side of the return spring 22 is fixedly connected to the movable block 23, and the left side of the movable block 23 is fixedly connected to the It is connected with an insert block 24, the left side of which passes through the limit plate 8, the sealing ring 28 and the inner surface of the mounting plate 11 in sequence and extends to the left side of the mounting plate 11, the top and bottom of the inner wall of the mounting box 9 are provided with transverse slide grooves 26, the top and bottom of the movable block 23 are fixedly connected with transverse sliders 27, the outer side of the transverse slider 27 is slidably connected to the inner cavity of the transverse slide groove 26, the front surface of the movable block 23 is fixedly connected with a pull rod 25, the front surface of the mounting box 9 is provided with a through groove 17, the front side of the pull rod 25 passes through the inner cavity of the through groove 17 and extends to the front side of the mounting box 9.

[0024] Through the above technical solution, by setting up the filter cartridge 10, the gas can be further filtered to improve the overall filtering effect. The reset spring 22 uses the elastic force to drive the movable block 23 to move to the left, and the movable block 23 drives the plug block 24 to move to the left, so as to connect the mounting plate 11 and the limit plate 8, thereby facilitating the fixation of the filter cartridge 10 and facilitating the subsequent disassembly of the filter cartridge 10 for cleaning or replacement. By setting the transverse slider 27 and the transverse slide groove 26, the stability of the movable block 23 during the left and right movement can be effectively improved to avoid displacement during the movement.

[0025] When in use, first pull the pull rod 25 to the right, the pull rod 25 drives the movable block 23 to move to the right, the movable block 23 drives the return spring 22 to deform and squeeze to the right, then push the filter cartridge 10 to the back side, so that the mounting plate 11 fits with the limit plate 8, and the sealing ring 28 is located between the mounting plate 11 and the limit plate 8, so as to improve the installation sealing between the two, and then release the pull rod 25, at this time the return spring 22 recovers its deformation and extends to the left due to the influence of the loss of force, and drives the movable block 23 to move to the left, so that the left side of the plug block 24 successively penetrates the limit plate 8, the sealing ring 28 and the inner surface of the mounting plate 11 and extends to the left side of the mounting plate 11, and the filter cartridge 10 is installed;

[0026] During the filtering process, the gas enters the inner cavity of the filter box 2 through the air inlet pipe 5, the gas is initially filtered through the filter screen 7, and the gas is secondarily filtered through the filter cartridge 10 to improve the filtering effect of the gas. The filtered gas is transported to the vacuum pump through the connecting pipe 12 and the transition box 4. During the filtering process, the output end of the servo motor 19 drives the crankshaft 20 to rotate, and the crankshaft 20 drives the scraper 14 to move up and down repeatedly through the movable sleeve 21 and the connecting rod 18 to scrape off the dust accumulated on the windward surface of the filter screen 7 to avoid excessive dust accumulation on the windward surface of the filter screen 7 affecting the filtering efficiency (the above is the working process of the entire device, and the content not described in detail in this manual belongs to the existing technology known to professional and technical personnel in this field).

[0027] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, for technicians in this field, they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A vacuum filter for a dry vacuum pump, comprising a bottom plate (1) and a filter cartridge (10), characterized in that: The left side of the top of the base plate (1) is fixedly connected to a filter box (2), the top of the filter box (2) is fixedly connected to a placement box (3), the right side of the top of the base plate (1) is fixedly connected to a transition box (4), the top and bottom of the inner wall of the filter box (2) are fixedly connected to a holder (6), the inner cavity of the holder (6) is clamped with a filter screen (7), the front surface of the placement box (3) is fixedly connected to a servo motor (19), the output end of the servo motor (19) is fixedly connected to a crankshaft (20), the surface of the crankshaft (20) is movably connected to a movable sleeve (21), the bottom of the movable sleeve (21) is movably connected to a connecting rod (18) via a rotating shaft, the bottom of the connecting rod (18) is movably connected to a mounting seat (13) via a rotating shaft, the inner cavity of the mounting seat (13) is clamped with a scraper (14), and the right side of the scraper (14) is in contact with the left side of the filter screen (7).

2. A vacuum filter for a dry vacuum pump according to claim 1, characterized in that: A longitudinal slide groove (15) is provided on the back side of the inner wall of the filter box (2), a longitudinal slide block (16) is fixedly connected to the back side of the left side of the mounting seat (13), and the back side of the longitudinal slide block (16) is slidably connected to the inner cavity of the longitudinal slide groove (15).

3. A vacuum filter for a dry vacuum pump according to claim 1, characterized in that: The left side of the filter box (2) is connected to an air intake pipe (5), the right side of the filter box (2) is connected to a connecting pipe (12), and the right side of the connecting pipe (12) is connected to the bottom of the left side of the transition box (4).

4. A vacuum filter for a dry vacuum pump according to claim 1, characterized in that: The left side of the filter cartridge (10) is fixedly connected to a sealing ring (28), the left side of the sealing ring (28) is fixedly connected to a mounting plate (11), the top and bottom of the inner wall of the filter box (2) are fixedly connected to a limiting plate (8), and the right side of the limiting plate (8) is fixedly connected to a mounting box (9).

5. A vacuum filter for a dry vacuum pump according to claim 4, characterized in that: A return spring (22) is fixedly connected to the right side of the inner cavity of the installation box (9), a movable block (23) is fixedly connected to the left side of the return spring (22), an insert block (24) is fixedly connected to the left side of the movable block (23), and the left side of the insert block (24) sequentially penetrates the inner surface of the limit plate (8), the sealing ring (28) and the installation plate (11) and extends to the left side of the installation plate (11).

6. A vacuum filter for a dry vacuum pump according to claim 5, characterized in that: The top and bottom of the inner wall of the installation box (9) are both provided with transverse sliding grooves (26), the top and bottom of the movable block (23) are both fixedly connected with transverse sliding blocks (27), the outer side of the transverse sliding block (27) is slidably connected to the inner cavity of the transverse sliding groove (26), the front surface of the movable block (23) is fixedly connected with a pull rod (25), the front surface of the installation box (9) is provided with a through groove (17), and the front side of the pull rod (25) passes through the inner cavity of the through groove (17) and extends to the front side of the installation box (9).

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