Air inlet filter suitable for roots vacuum pump

Abstract

The utility model discloses an air inlet filter suitable for a Roots vacuum pump, which particularly relates to the technical field of air filtration and comprises an air inlet connecting piece, a filter shell arranged on one side of the outer end face of the air inlet connecting piece, a filter locking piece arranged on one side of the outer portion of the filter shell, and an air outlet connecting piece arranged in the middle of the outer end face of the filter locking piece. A separation supporting rod is arranged on one side, close to the air outlet connecting piece, of the inner end surface of the filter locking piece; a mounting supporting plate is arranged on one side of the outer end face of the partition supporting rod. During actual use, the installation supporting plate, the installation limiting block, the supporting limiting block, the filter cotton container and the limiting installation groove are correspondingly arranged, so that the filter cotton container can be conveniently installed and detached, and the filter cotton can be conveniently installed and replaced; meanwhile, in the state that the filter shell, the supporting flange, the external thread, the internal thread and the filter locking piece are installed in a matched mode, the filter shell can be conveniently locked and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration, in particular to an air intake filter suitable for a Roots vacuum pump. Background Art

[0002] During the evacuation process of a Roots vacuum pump, impurities such as welding slag, lint, oil, and moisture from the piping often enter the vacuum pump cavity. The long-term accumulation of welding slag and lint can form a sludge, which can severely wear the walls of the vacuum pump cavity. Moisture can further abrade the vacuum pump, leading to a sharp drop in its vacuuming capacity or even causing it to become stuck. Therefore, a filter is often installed between the vacuum pump and the container being evacuated for protection. When the filter is fixed between the vacuum pump and the container being evacuated, the user needs to remove both ends of the filter before removing the filter cotton for replacement. In order to facilitate the rapid replacement of filter cotton, for example, the patent of prior art announcement number CN27077004U discloses a dry filter with quick-replacement filter cotton, in which two filter cottons are placed on the left side of the filter screen, the magnetic strip and the partition component are attracted, the filter cotton is stuck between the limiting protrusion and the filter screen, and the exhaust gas is passed into the air inlet. The exhaust gas first hits the fluff brush on the inner wall surface of the semi-conical surface, and the fluff brush blocks the larger particles in the exhaust gas, completing the first filtration. The remaining exhaust gas passes through the filter screen assembly in the first filter screen cavity for a second filtration, and then passes through the filter screen assembly in the second filter screen cavity for a third filtration, and then the exhaust gas after the three filtrations is discharged from the air outlet; when the filter cotton needs to be replaced, it is only necessary to rotate the filter screen to make the filter cotton working in the first filter screen cavity and the second filter screen cavity rotate out.

[0003] When the above device is working, it has the beneficial effects of simple structure, good filtering effect, long service life of filter cotton, easy replacement of filter cotton, replacement of filter cotton without stopping the machine, and easy positioning and rotation of filter mesh assembly. However, it is inconvenient to disassemble the filter cotton, and the installation stability and sealing of the filter cotton need to be further improved when it is in use to prevent exhaust gas from overflowing from the edge of the filter cotton. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an air intake filter suitable for a Roots vacuum pump. The technical problem to be solved by the utility model is: how to increase the convenience of disassembly of the filter cotton and the sealing performance of the installation.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: an air intake filter suitable for a Roots vacuum pump, comprising an air intake connector, a filter housing provided on one side of an outer end surface of the air intake connector, a filter locking member provided on one side of an outer portion of the filter housing, an air outlet connector provided in the middle portion of the outer end surface of the filter locking member, and a partition support rod provided on the inner end surface of the filter locking member on a side close to the air outlet connector;

[0006] A mounting support plate is provided on one side of the outer end surface of the partition support rod, a support limit block is provided on the lower side of the outer end of the mounting support plate, a mounting limit block is provided on the side of the outer end surface of the mounting support plate close to the support limit block, a filter cotton container is provided on one side of the outer end of the mounting support plate, filter cotton is provided in the filter cotton container, and a limiting mounting groove is provided on the lower side of one end of the filter cotton container.

[0007] In a preferred embodiment, one side of the filter locking member is processed with an internal thread, and one side of the outer end surface of the air inlet connector and the air outlet connector is provided with a mounting flange;

[0008] A first sealing gasket is provided between the mounting flange on the inner side of the filter housing and the fitting surface of the filter housing, and one side of the filter housing is processed with an external thread.

[0009] In a preferred embodiment, one end of the air outlet connector is connected to the Roots vacuum pump via a vacuum clamp, and the other end is fixedly connected to the contact surface of the filter locking member;

[0010] The outer end surface of the filter housing is provided with second sealing gaskets on both sides close to the external thread. One end of the filter housing is processed with a through hole for allowing the air intake connector to pass through, and the filter housing can move along the axial direction of the air intake connector.

[0011] In a preferred embodiment, the outer side of the other end of the filter housing is processed with a stepped surface, and the surface of the side in contact with the air outlet connector is processed with a sealing groove for placing a second sealing gasket, and the sealing groove cooperates with the first sealing gasket of the mounting flange to achieve a sealing effect;

[0012] The side of the filter cotton container is processed with through holes distributed equidistantly around the center. The inner surface of the filter cotton container is attached with a stainless steel breathable mesh, and the filter cotton is placed in the stainless steel breathable mesh.

[0013] In a preferred embodiment, the first sealing gasket and the second sealing gasket are both made of rubber, and the number of the separating support rods is multiple and arranged in a circular array outside the center point of the filter locking member in the right direction;

[0014] The outer end surface of the mounting support plate in the right viewing direction is coplanar with the outer end surface of the filter cotton container in the right viewing direction, and the filter housing and the filter locking member are adapted to each other through external threads and internal threads.

[0015] In a preferred embodiment, the upper end surface of the support limit block in the right viewing direction is in contact with the lower end surface of the limit installation groove in the right viewing direction;

[0016] Vertical cutting grooves are provided on both sides of the outer end surface of the filter cotton container. There are two installation limit blocks, which are arranged in a mirror state on both sides of the vertical center axis of the installation support plate in the right viewing direction. The vertical cutting grooves on both sides of the filter cotton container are in contact with the inner end surface of the installation limit block.

[0017] The utility model has the following advantages:

[0018] When the utility model is actually used, the filter cotton container can be easily installed and disassembled by installing the support plate, installing the limit block, supporting the limit block, filtering cotton container and the limit installation groove in a corresponding setting state, thereby facilitating the installation and replacement of the filter cotton. At the same time, when the filter housing, supporting flange, external thread, internal thread and filter locking piece are installed in coordination, the filter housing can be conveniently locked and fixed, so that the filter housing can slide from the outer end of the air inlet connector to the other end, and effectively increase the convenience of installing and disassembling the filter cotton container and the filter cotton, which can greatly reduce the time of equipment maintenance personnel to repair and maintain the equipment, thereby reducing equipment downtime, and indirectly improving the equipment utilization efficiency and the enterprise's production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 This is a schematic diagram of the overall main cross-sectional structure of the utility model.

[0023] Figure 3 This is a schematic diagram of the cross-sectional installation structure of the filter cotton container of the utility model.

[0024] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0025] In the figure: 1 air inlet connector, 2 filter housing, 3 filter locking piece, 4 air outlet connector, 5 filter cotton container, 6 mounting flange, 7 support limit block, 8 mounting limit block, 9 mounting support plate, 10 first sealing gasket, 11 filter cotton, 12 external thread, 13 internal thread, 14 second sealing gasket, 15 partition support rod, 16 limit mounting groove. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] The utility model provides an air intake filter suitable for a Roots vacuum pump, such as Figure 1 and 2 As shown, it includes an air inlet connector 1, a filter housing 2 is provided on one side of its outer end surface, a filter locking member 3 is provided on one side of the outside of the filter housing 2, an air outlet connector 4 is provided in the middle of the outer end surface of the filter locking member 3, and a mounting flange 6 is provided on one side of the outer end surface of the air inlet connector 1 and the air outlet connector 4.

[0028] A first sealing gasket 10 is provided between the mounting flange 6 on the inner side of the filter housing 2 and the fitting surface of the filter housing 2. One end of the air outlet connector 4 is connected to the Roots vacuum pump through a vacuum clamp, and the other end is fixedly connected to the contact surface of the filter locking piece 3. A through hole is processed at one end of the filter housing 2 for allowing the air inlet connector 1 to pass through, and the filter housing 2 can move along the axial direction of the air inlet connector 1.

[0029] The side of the filter cotton container 5 is processed with through holes equidistantly distributed around the center. The inner surface of the filter cotton container 5 is attached with a stainless steel breathable mesh. The interior of the filter cotton container 5 is provided with filter cotton 11. The filter cotton 11 can be placed in the stainless steel breathable mesh, which can conveniently filter impurities in the gas through the filter cotton 11. Vertical cutting grooves are opened on both sides of the outer end surface of the filter cotton container 5.

[0030] like Figure 3 and 4 As shown, a partition support rod 15 is provided on the inner end surface of the filter locking member 3 near the air outlet connector 4, a mounting support plate 9 is provided on one side of the outer end surface of the partition support rod 15, and a support limit block 7 is provided on the lower side of the outer end of the mounting support plate 9.

[0031] An installation limit block 8 is provided on the outer end surface of the installation support plate 9 on the side close to the support limit block 7, and a filter cotton container 5 is provided on one side of the outer end of the installation support plate 9. A limited installation groove 16 is provided on the lower side of one end of the filter cotton container 5, and an internal thread 13 is processed on one side of the filter locking piece 3, and an external thread 12 is processed on one side of the filter housing 2.

[0032] The outer end surface of the filter housing 2 is provided with a second sealing gasket 14 on both sides close to the external thread 12. The outer side of the other end of the filter housing 2 is processed with a stepped table, and the surface of this side in contact with the air outlet connector 1 is processed with a sealing groove for placing the second sealing gasket 14.

[0033] The sealing groove and the first sealing gasket 10 of the mounting flange 6 cooperate with each other to perform a sealing function, which can effectively increase the sealing of the air intake connector 1, the filter housing 2 and the filter locking member 3 after installation. The first sealing gasket 10 and the second sealing gasket 14 are both rubber components, and the filter housing 2 and the filter locking member 3 are adapted through the external thread 12 and the internal thread 13.

[0034] The upper end face of the support limit block 7 in the right viewing direction is fitted with the lower end face of the limit installation groove 16 in the right viewing direction. There are two installation limit blocks 8, and they are arranged in a mirror state on both sides of the vertical center axis of the installation support plate 9 in the right viewing direction. The vertical cutting grooves on both sides of the filter cotton container 5 are fitted with the inner end faces of the installation limit blocks 8, which can effectively increase the stability and convenience of the installation of the filter cotton container 5.

[0035] Working principle of this utility model:

[0036] When using the present invention, the staff connects the air inlet connector 1 to the container to be vacuumed through the mounting flange 6 and the vacuum clamp, and then connects the air outlet connector 4 to the Roots vacuum pump through the mounting flange 6. The staff can then slide the filter housing 2 to one side of the outer end face of the air inlet connector 1, and then the staff can install the filter cotton 11 on the inner end of the filter cotton container 5, and then install the filter cotton container 5 on one side of the mounting support plate 9, and align the other end of the filter cotton container 5 with the support flange 6 and install it stably. The staff can then slide the filter housing 2 to the other end of the outer end face of the air inlet connector 1, and then the filter housing 2 and the filter locking piece 3 can be locked and fixed by the external thread 12 and the internal thread 13, and then the filter can be used.

[0037] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. An air intake filter suitable for a Roots vacuum pump, characterized in that: include: An air inlet connector (1) is provided with a filter housing (2) on one side of its outer end surface, a filter locking member (3) is provided on one side of the outside of the filter housing (2), an air outlet connector (4) is provided in the middle of the outer end surface of the filter locking member (3), and a partition support rod (15) is provided on the inner end surface of the filter locking member (3) on a side close to the air outlet connector (4); A mounting support plate (9) is provided on one side of the outer end surface of the partition support rod (15), a support limit block (7) is provided on the lower side of the outer end of the mounting support plate (9), a mounting limit block (8) is provided on the side of the outer end surface of the mounting support plate (9) close to the support limit block (7), a filter cotton container (5) is provided on one side of the outer end of the mounting support plate (9), filter cotton (11) is provided in the filter cotton container (5), and a limit mounting groove (16) is provided on the lower side of one end of the filter cotton container (5).

2. The air intake filter suitable for a Roots vacuum pump according to claim 1, characterized in that: One side of the filter locking member (3) is processed with an internal thread (13), and one side of the outer end surface of the air inlet connector (1) and the air outlet connector (4) is provided with a mounting flange (6); A first sealing gasket (10) is provided on the fitting surface between the mounting flange (6) on the inner side of the filter housing (2) and the filter housing (2), and an external thread (12) is processed on one side of the filter housing (2).

3. The air intake filter suitable for a Roots vacuum pump according to claim 2, characterized in that: One end of the air outlet connector (4) is connected to the Roots vacuum pump via a vacuum clamp, and the other end is fixedly connected to the contact surface of the filter locking member (3); The outer end surface of the filter housing (2) is provided with a second sealing gasket (14) on both sides close to the external thread (12); one end of the filter housing (2) is processed with a through hole capable of allowing the air intake connector (1) to pass through, and the filter housing (2) is capable of moving along the axial direction of the air intake connector (1).

4. The air intake filter suitable for a Roots vacuum pump according to claim 3, characterized in that: The outer side of the other end of the filter housing (2) is processed with a stepped surface, and the surface of the side in contact with the air outlet connector (4) is processed with a sealing groove for placing a second sealing gasket (14), and the sealing groove cooperates with the first sealing gasket (10) of the mounting flange (6) to perform a sealing function; The side of the filter cotton container (5) is processed with through holes distributed equidistantly around the center, and the inner surface of the filter cotton container (5) is attached with a stainless steel air-permeable net, and the filter cotton (11) is placed in the stainless steel air-permeable net.

5. The air intake filter suitable for a Roots vacuum pump according to claim 3, characterized in that: The first sealing gasket (10) and the second sealing gasket (14) are both made of rubber. The number of the separating support rods (15) is plural and they are arranged in a circular array outside the center point of the filter locking member (3) in the right viewing direction. The outer end surface of the mounting support plate (9) in the right-view direction is arranged in a coplanar state with the outer end surface of the filter cotton container (5) in the right-view direction, and the filter housing (2) and the filter locking member (3) are adapted to each other through an outer thread (12) and an inner thread (13).

6. The air intake filter suitable for a Roots vacuum pump according to claim 1, characterized in that: The upper end surface of the support limit block (7) in the right viewing direction is in contact with the lower end surface of the limit installation groove (16) in the right viewing direction; Vertical cutting grooves are provided on both sides of the outer end surface of the filter cotton container (5), and the number of the installation limit blocks (8) is provided to be two, and they are arranged in a mirror image state on both sides of the vertical central axis of the installation support plate (9) in the right viewing direction, and the vertical cutting grooves on both sides of the filter cotton container (5) are in contact with the inner end surface of the installation limit blocks (8).

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