Vacuum pump air filter element assembly

Abstract

The utility model discloses an air filter element assembly of a vacuum pump, and relates to the technical field of filter elements. The filter element comprises a shell, a sealing cover, locking assemblies and a filter element body, the shell is of a hollow tubular structure, an outlet and an inlet are formed in the two ends of the shell respectively, a lateral frame is fixed to the side wall of the shell in a penetrating mode, the sealing cover covers the outer side of the lateral frame, and the locking assemblies distributed at equal intervals are arranged on the four outer walls of the lateral frame; and a filter element main body is also arranged in the shell. Through the arrangement of the lateral frame, the sealing cover, the shell and the locking assembly, the problems that an upper cover bin opening structure is small in operation area, low in cleaning efficiency and inconvenient to operate, and the flow direction of air filtration is relatively constant are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to filter elements, and in particular relates to an air filter element assembly for a vacuum pump. Background Art

[0002] An air filter is a type of filter, also known as an air filter cartridge, air cleaner, or style. It's primarily used for air filtration in construction vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms. Air filters are often added to various fans to filter and output clean air, or they're installed on various vacuum pumps to purify air during extraction. However, these air filters still have the following drawbacks in actual use:

[0003] Conventional centrifugal fan air filter assemblies are constructed with an upper cover that opens, and an internal filter support ring that is fixed. During the filter opening process (i.e., the filter replacement process, which involves opening the upper cover, removing the old filter, cleaning the housing cavity, and installing a new filter), replacement can only be performed by opening the upper cover, resulting in a small operating area, low cleaning efficiency, and inconvenient operation.

[0004] Secondly, the air flow direction in conventional air filter elements is constant, that is, it enters from one end cover, passes through the filter element, and is then discharged from the other end cover. The entire air flow direction is relatively constant. Once the flow rate is too large, it can easily lead to insufficient filtration efficiency, or cause blockage on the filter element, or increase the pressure outside the filter element. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum pump air filter element assembly, which solves the problems of small operating area, low cleaning efficiency, inconvenient operation and relatively constant flow direction of air filtration in the upper cover opening structure by arranging a lateral frame, a sealing cover, an outer shell and a locking component.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a vacuum pump air filter element assembly, comprising a housing, a sealing cover, a locking assembly and a filter element body. The housing is a hollow tubular structure, with an outlet and an inlet provided at both ends of the housing, and a lateral frame is fixedly passed through the side wall of the housing. The outer cover of the lateral frame is provided with a sealing cover, and the four outer walls of the lateral frame are all provided with locking assemblies distributed at equal distances. The filter element body is also provided in the housing.

[0008] Each of the locking components consists of two locking ear plates fixed on the outer wall of the lateral frame, and a rotating shaft is rotatably connected between the two locking ear plates. A screw is threadedly connected to the middle of the rotating shaft. The four side walls of the cover are all provided with limiting slots equal in number to the locking components and corresponding in position. The end of the screw away from the rotating shaft passes through the limiting slot close to it and is fixed with a locking ring.

[0009] Furthermore, flanges are fixed to the outsides of the ports of the outlet and inlet that are away from each other, and the inner cavity diameters of the inlet and outlet are equal to the diameter of the filter element body.

[0010] Furthermore, an I-shaped bracket is fixed on an outer end wall of the lateral frame close to the outlet, and symmetrical mounting ear plates are fixed on the side of the I-shaped bracket facing the closing plate, and a hinge shaft is rotatably connected between the two mounting ear plates; a handle and a hinge ear plate are fixed on the side of the cover away from the lateral frame, and one end of the hinge ear plate extends out of the cover and is sleeved outside the hinge shaft.

[0011] Furthermore, a sealing ring is fixed on the side of the cover close to the lateral frame, and a sealing inner ring is also provided inside the sealing ring. The sealing ring is located between the opposite surfaces of the cover and the lateral frame and contacts the two. The sealing inner ring extends into the inner cavity of the lateral frame, and the outer wall of the sealing inner ring portion extending out of the sealing ring contacts the inner wall of the lateral frame.

[0012] Furthermore, a limiting block is fixed on the outer periphery of the screw, and the limiting block is closer to the locking ring, and the limiting block abuts against the outer surface of the cover outside the limiting groove.

[0013] Furthermore, two symmetrically distributed internal thread rings are fixed on the inner wall of the shell, and equidistantly distributed positioning rings are also fixed on the inner wall of the shell between the two internal thread rings, and the inner cavity diameters of the internal thread rings and the positioning rings are equal to the inner cavity diameters of the inlet and outlet.

[0014] Furthermore, the filter element body includes end cover one, end cover two, and filter material, and an exoskeleton is fixed between end cover one and end cover two, filter material is arranged in the exoskeleton, a water outlet is opened through end cover one, end cover one is close to the outlet, and the water outlet is facing the outlet direction, two symmetrical buckle grooves are opened on the end of end cover two away from end cover one, and end cover two is close to the inlet, end cover one is screwed into the internal threaded ring near the outlet, end cover two is screwed into the internal threaded ring near the inlet, and a through air hole is also opened in the internal threaded ring near the inlet.

[0015] The utility model has the following beneficial effects:

[0016] The utility model solves the problems of small working area, low cleaning efficiency and inconvenient operation of the upper cover opening structure by arranging side frames, sealing covers, shells and locking components; the traditional upper cover opening structure is changed, and when the filter element needs to be replaced, not only the channel at the shell inlet is opened, but also the sealing covers are opened to open the side frames. The side frames are additionally provided on the side walls of the shell, and the sealing covers are locked by the locking components and can be sealed and fixed with the side frames. After the sealing covers are opened, the filter element inside the shell can be assisted to be removed within the side frames, and the inside of the shell can be cleaned, the working area is increased, and disassembly, cleaning, maintenance and the like are convenient, which is more practical; the utility model has a large market demand (dust blower, vacuum pump, centrifugal blower) and can be used; the structure is compact and space-saving; the appearance is reasonable and aesthetically pleasing; after-sales maintenance is convenient, saving time and effort.

[0017] The utility model solves the problem of relatively constant flow direction of air filtration by providing an outer shell and a lateral frame; because the lateral frame is additionally added to the outer shell, when the air enters the interior of the outer shell and the outside of the filter element, the airflow distribution is uneven, which will change the internal airflow direction and cause confusion, thereby changing the constant filtering state of the airflow. Due to the constant flow of the airflow, the filtering process will not be carried out at a specific position of the filter element for a long time, and a better filtering effect can be achieved in the same space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0019] Figure 1 It is a three-dimensional diagram of a vacuum pump air filter assembly;

[0020] Figure 2 for Figure 1 Structural diagram from another perspective;

[0021] Figure 3 for Figure 1 A magnified view of the structure at point A;

[0022] Figure 4 This is the state diagram after the cover is opened;

[0023] Figure 5 This is a cross-sectional view of the connection between the housing and the filter element body;

[0024] Figure 6 is a cross-sectional view of the housing;

[0025] Figure 7 The structure diagram of the filter element;

[0026] Figure 8 for Figure 7 Another perspective of the structure diagram.

[0027] Reference numerals:

[0028] 1. Housing; 101. Outlet; 102. Inlet; 103. Flange; 104. Lateral frame; 105. I-beam bracket; 106. Mounting ear plate; 107. Hinge shaft; 108. Internal thread ring; 109. Positioning ring; 2. Closing cover; 201. Hinge ear plate; 202. Handle; 203. Limiting notch; 204. Sealing ring; 205. Sealing inner ring; 3. Locking assembly; 301. Locking ear plate; 302. Rotating shaft; 303. Screw; 304. Limiting block; 305. Locking ring; 4. Filter element body; 401. End cap 1; 4011. Water outlet; 402. End cap 2; 4021. Buckle groove; 403. Exoskeleton; 404. Filter material. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-8 As shown, the utility model is a vacuum pump air filter element assembly, including a housing 1, a cover 2, a locking assembly 3 and a filter element body 4. The housing 1 is a hollow tubular structure, with an outlet 101 and an inlet 102 respectively provided at both ends of the housing 1. A lateral frame 104 is fixed through the side wall of the housing 1, and the outer cover of the lateral frame 104 is provided with a cover 2. The four outer walls of the lateral frame 104 are all provided with locking assemblies 3 distributed equidistantly. The filter element body 4 is also provided in the housing 1.

[0031] During filtration, air enters the housing 1 from the inlet 102, is filtered by the filter element body 4 in the housing 1, and is then discharged from the outlet 101. At the same time, a lateral frame 104 is provided on the side wall of the housing 1, changing the layout of the conventional filter element housing 1. The cover 2 is locked outside the lateral frame 104 through the locking assembly 3. The lateral frame 104 is closed by the cover 2 during operation. For maintenance and other operations, the cover 2 can be opened.

[0032] Each locking assembly 3 comprises two locking lugs 301 fixed to the outer wall of the lateral frame 104. A rotating shaft 302 is rotatably connected between the two locking lugs 301. A screw 303 is threadedly connected to the middle of the rotating shaft 302. The four side walls of the cover 2 are each provided with a number of limiting notches 203 equal to the number of locking assemblies 3 and corresponding in position. The end of the screw 303, away from the rotating shaft 302, passes through the limiting notch 203 adjacent to the rotating shaft 302 and is fixed with a locking ring 305.

[0033] A limiting block 304 is also fixed to the outer periphery of the screw 303, and the limiting block 304 is closer to the locking ring 305. The limiting block 304 abuts against the outer surface of the cover 2 outside the limiting notch 203;

[0034] When using the locking assembly 3 to lock the cover 2, first place the cover 2 outside the outer port of the lateral frame 104, then rotate the screw 303 in each locking assembly 3 together with the rotating shaft 302, so that the end of the screw 303 away from the rotating shaft 302 is located in the limiting groove 203 on the outside of the cover 2, and then rotate the screw 303 through the locking ring 305 to make it approach the rotating shaft 302 until the limiting block 304 abuts against the outer surface of the cover 2, completing the locking.

[0035] Flanges 103 are fixed outside the ports of the outlet 101 and the inlet 102 that are away from each other, and the inner cavity diameters of the inlet 102 and the outlet 101 are equal to the diameter of the filter element body 4; the flanges 103 are used to connect to external air pipes.

[0036] An I-shaped bracket 105 is fixed to an outer end wall of the lateral frame 104 near the outlet 101. Symmetrical mounting lugs 106 are fixed to the side of the I-shaped bracket 105 facing the cover plate. A hinge shaft 107 is rotatably connected between the two mounting lugs 106. A handle 202 and a hinged lug 201 are fixed to the side of the cover 2 away from the lateral frame 104. One end of the hinged lug 201 extends out of the cover 2 and is sleeved outside the hinge shaft 107.

[0037] The I-shaped bracket 105 serves as the mounting carrier, and a mounting ear plate 106 and a hinge shaft 107 are provided on its side. A hinge ear plate 201 is installed on the outer side of the cover 2, and the hinge ear plate 201 is hinged outside the hinge shaft 107, so that when the cover 2 is opened, it rotates open with the hinge shaft 107 as the center.

[0038] A sealing ring 204 is fixed on the surface of the cover 2 close to the lateral frame 104, and a sealing inner ring 205 is also provided inside the sealing ring 204. The sealing ring 204 is located between the opposite surfaces of the cover 2 and the lateral frame 104 and contacts the two. The sealing inner ring 205 extends into the inner cavity of the lateral frame 104, and the outer wall of the part of the sealing inner ring 205 extending out of the sealing ring 204 contacts the inner wall of the lateral frame 104.

[0039] When the cover 2 is placed outside the lateral frame 104, the sealing ring 204 is located between the opposite surfaces of the cover 2 and the lateral frame 104 to ensure the sealing between the cover 2 and the lateral frame 104, and then the sealing inner ring 205 extends into the lateral frame 104 to increase the sealing.

[0040] Two symmetrically distributed internal thread rings 108 are fixed on the inner wall of the housing 1, and an equidistantly distributed positioning ring 109 is also fixed on the inner wall of the housing 1 between the two internal thread rings 108. The inner cavity diameters of the internal thread rings 108 and the positioning rings 109 are equal to the inner cavity diameters of the inlet 102 and the outlet 101;

[0041] The filter element body 4 includes an end cap 1 401, an end cap 2 402, and a filter material 404, and an exoskeleton 403 is fixed between the end cap 1 401 and the end cap 2 402, and the filter material 404 is arranged in the exoskeleton 403. A water outlet 4011 is provided through the end cap 1 401, and the end cap 1 401 is close to the outlet 101, and the water outlet 4011 is facing the outlet 101. The end of the end cap 2 402 away from the end cap 1 401 is provided with two symmetrical buckle grooves 4021, and the end cap 2 402 is close to the inlet 102. The end cap 1 401 is screwed into the internal threaded ring 108 near the outlet 101, and the end cap 2 402 is screwed into the internal threaded ring 108 near the inlet 102. The internal threaded ring 108 near the inlet 102 is also provided with a through air hole.

[0042] When installing the filter element body 4, first, the outer frame 403 is installed by the end cap 1 401 and the end cap 2 402 to form the skeleton structure of the filter element body 4, and then the filter material 404 is filled in the outer frame 403 for filtering. When installing, hold the buckle groove 4021, grab the end cap 2 402, and extend the filter element body 4 from the inlet 102 into the housing 1. Then rotate the filter element body 4 so that the end cap 1 401 and the end cap 2 402 are respectively connected to the two internal threaded rings 108 in the housing 1 to complete the installation;

[0043] During filtering, air enters from the inlet 102 , passes through the air holes of the internal threaded ring 108 outside the second end cover 402 , enters the housing 1 , is filtered by the filter element body 4 , and then is discharged from the outlet 101 .

[0044] The specific working principle of the present invention is as follows: first, the skeleton structure of the filter element body 4 is formed by installing the outer skeleton 403 by the end cover 1 401 and the end cover 2 402, and then the filter material 404 is filled in the outer skeleton 403. When installing the filter element body 4, hold the buckle groove 4021, grab the end cover 2 402 and extend the filter element body 4 from the inlet 102 direction into the shell 1, then rotate the filter element body 4 so that the end cover 1 401 and the end cover 2 402 are respectively connected to the two internal threaded rings 108 in the shell 1 to complete the installation. Subsequently, when it is necessary to close the side frame 104, the cover 2 is placed on the outside of the side frame 104, and the sealing ring 204 is located between the opposite surfaces of the cover 2 and the side frame 104, and then cooperates with the sealing inner ring 2 05 extends into the lateral frame 104 to ensure the sealing between the cover 2 and the lateral frame 104, and then the screw 303 in each locking assembly 3 is rotated together with the rotating shaft 302, so that the end of the screw 303 away from the rotating shaft 302 is located in the limiting groove 203 at the outside of the cover 2, and then the screw 303 is rotated by the locking ring 305 to make it approach the direction of the rotating shaft 302 until the limiting block 304 abuts against the outer surface of the cover 2, completing the locking. During filtering, air enters from the inlet 102, passes through the air holes of the internal threaded ring 108 outside the end cover 2 402, enters the outside of the filter element main body 4, enters the outer shell 1, is filtered by the filter element main body 4, and then is discharged from the outlet 101.

[0045] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.

Claims

1. A vacuum pump air filter element assembly, comprising a housing (1), a cover (2), a locking assembly (3) and a filter element body (4), characterized in that: The housing (1) is a hollow tubular structure, with an outlet (101) and an inlet (102) provided at both ends of the housing (1), and a lateral frame (104) is fixedly passed through the side wall of the housing (1), the outer cover of the lateral frame (104) is provided with a sealing cover (2), and locking components (3) are equidistantly distributed on the four outer walls of the lateral frame (104); a filter element body (4) is also provided in the housing (1); Each of the locking components (3) comprises two locking ear plates (301) fixed on the outer wall of the lateral frame (104), and a rotating shaft (302) is rotatably connected between the two locking ear plates (301), a screw rod (303) is threadedly connected to the middle of the rotating shaft (302), and the four side walls of the cover (2) are provided with limiting slots (203) equal in number to the number of the locking components (3) and corresponding in position, and one end of the screw rod (303) away from the rotating shaft (302) passes through the limiting slot (203) adjacent to the rotating shaft and is fixed with a locking ring (305).

2. The vacuum pump air filter element assembly according to claim 1, characterized in that: Flanges (103) are fixed to the outsides of the ports of the outlet (101) and the inlet (102) that are separated from each other, and the inner cavity diameters of the inlet (102) and the outlet (101) are equal to the diameter of the filter element body (4).

3. The vacuum pump air filter element assembly according to claim 1, characterized in that: An I-shaped bracket (105) is fixed to an outer end wall of the lateral frame (104) close to the outlet (101), and symmetrical mounting ear plates (106) are fixed to the side of the I-shaped bracket (105) facing the sealing plate, and a hinge shaft (107) is rotatably connected between the two mounting ear plates (106); a handle (202) and a hinged ear plate (201) are fixed to the side of the sealing cover (2) away from the lateral frame (104), and one end of the hinged ear plate (201) extends out of the sealing cover (2) and is sleeved outside the hinge shaft (107).

4. The vacuum pump air filter element assembly according to claim 1, characterized in that: A sealing ring (204) is fixed on a surface of the cover (2) close to the lateral frame (104), and a sealing inner ring (205) is further provided inside the sealing ring (204). The sealing ring (204) is located between the opposite surfaces of the cover (2) and the lateral frame (104) and contacts the two. The sealing inner ring (205) extends into the inner cavity of the lateral frame (104), and the outer wall of the portion of the sealing inner ring (205) extending out of the sealing ring (204) contacts the inner wall of the lateral frame (104).

5. The vacuum pump air filter element assembly according to claim 1, characterized in that: A limiting block (304) is also fixed to the outer periphery of the screw rod (303), and the limiting block (304) is closer to the locking ring (305). The limiting block (304) abuts against the outer surface of the cover (2) outside the limiting notch (203).

6. The vacuum pump air filter element assembly according to claim 1, characterized in that: Two symmetrically distributed internal thread rings (108) are fixed on the inner wall of the shell (1), and equidistantly distributed positioning rings (109) are also fixed on the inner wall of the shell (1) between the two internal thread rings (108), and the inner cavity diameters of the internal thread rings (108) and the positioning rings (109) are equal to the inner cavity diameters of the inlet (102) and the outlet (101).

7. The vacuum pump air filter element assembly according to claim 6, characterized in that: The filter element body (4) includes an end cap 1 (401), an end cap 2 (402), and a filter material (404), and an outer frame (403) is fixed between the end cap 1 (401) and the end cap 2 (402), and the filter material (404) is arranged in the outer frame (403). A water outlet (4011) is provided through the end cap 1 (401), and the end cap 1 (401) is close to the outlet (101), and the water outlet (4011) faces the outlet (101). The end cover 2 (402) is provided with two symmetrical buckle grooves (4021) at one end away from the end cover 1 (401), and the end cover 2 (402) is close to the inlet (102). The end cover 1 (401) is screwed into the internal threaded ring (108) near the outlet (101), and the end cover 2 (402) is screwed into the internal threaded ring (108) near the inlet (102). A through air hole is also provided in the internal threaded ring (108) near the inlet (102).

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