A cleanroom air supply filter

Abstract

This utility model discloses an air supply filter for cleanrooms, including a first filter housing. An air inlet pipe is fixedly connected to the upper left end of the first filter housing, and a first opening groove is formed at the upper right end of the first filter housing. The first filter housing is connected to a second filter housing through the first opening groove. The second filter housing is fixedly disposed at the right end of the first filter housing. The lower end of the second filter housing is connected to a processing housing through a connecting pipe at the right side. Under the action of a second motor and a lead screw, a movable frame moves and adjusts on the lead screw. High-pressure flushing water is sprayed out through the flushing pipe head to backwash and clean the primary and intermediate filter parts. Then, high-pressure gas is blown out through the air blowing pipe head to backwash and clean the flushed filter parts again, improving the cleaning effect. At the same time, the flushed parts are dried, thereby cleaning and regenerating the primary and intermediate filter parts and reducing the waste of consumables.

Description

Technical Field

[0001] This utility model relates to the field of air supply filter technology, specifically an air supply filter for cleanrooms. Background Technology

[0002] Air supply filters in cleanrooms are the core equipment for maintaining air cleanliness. They are mainly used to remove particulate matter and other pollutants from the air to ensure that the cleanroom reaches a specific cleanliness level (such as ISO 1-9 or GMPA-D). Most air supply filters improve the filtration effect of particulate matter through a graded filtration method, which includes primary filtration, intermediate filtration, advanced filtration and ultra-advanced filtration according to filtration requirements. Among them, the primary and intermediate filtration stages are prone to clogging because they filter larger impurities, which affects the air volume and ventilation effect, and requires more frequent replacement and material consumption. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the above and / or existing air supply filters used in cleanrooms, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an air supply filter for cleanrooms. Under the action of a first motor and a drive shaft, the two first filter frames on the left and right are rotated and adjusted through a transmission frame, a connecting frame, and a connecting shaft, so that the upper and lower parts of the primary and intermediate filters are rotated and swapped, and the upper filtered part and the lower unfiltered part are interchanged. Under the action of a second motor and a lead screw, the movable frame moves and adjusts on the lead screw. The external high-pressure flushing water is sprayed out through the flushing pipe head to backwash and clean the primary and intermediate filter parts. Then, the external high-pressure gas is blown out through the air blowing pipe head to backwash and clean the flushed filter parts again, improving the cleaning effect. At the same time, the flushed parts are dried, thereby cleaning and regenerating the primary and intermediate filter parts and reducing the waste of consumables.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] An air supply filter for a cleanroom includes a first filter housing. An air inlet pipe is fixedly connected to the upper left end of the first filter housing. A first opening groove is formed at the upper right end of the first filter housing. The first filter housing is connected to a second filter housing through the first opening groove. The second filter housing is fixedly disposed at the right end of the first filter housing. The lower end of the second filter housing is connected to a processing housing via a connecting pipe at the right side. The processing housing is fixedly disposed at the right end of the first filter housing. A second opening groove is formed at the right side of both the upper end of the processing housing and the lower end of the second filter housing. An air outlet pipe is fixedly connected to the right end of the processing housing. A through-hole groove is formed at the lower end of the first filter housing. A dirt collection pipe is fixedly connected to the lower end of the first filter housing. A discharge pipe is connected to the lower end of the dirt collection pipe.

[0008] The first filter housing includes a drive shaft rotatably connected to the left and right side walls inside the first filter housing. The drive shaft on the left side passes through the first filter housing and is connected to the output shaft of the first motor. A drive frame is fixedly connected to the inner end of the drive shaft. A connecting frame is fixedly connected to the outer ring of the drive frame near the right side. The outer end of the connecting frame is fixedly set on the inner wall of the first filter frame. A lead screw is rotatably connected to the front and rear side walls inside the first filter housing. The rear end of the lead screw passes through the first filter housing and is connected to the second motor. A movable frame is installed through the lead screw. A flushing pipe head and an air blowing pipe head are installed at the lower end of the movable frame.

[0009] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, the first filter frame has a first mounting groove, and a first bolt hole is provided on the right side of the first mounting groove. The left and right transmission frames are connected by a connecting shaft. The primary filter screen is installed in the first mounting groove on the left side by a first external fastening bolt and the corresponding first bolt hole, and the intermediate filter screen is installed in the first mounting groove on the right side by a first external fastening bolt and the corresponding first bolt hole.

[0010] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, a support guide rod and a baffle frame are fixedly provided on the front and rear side walls inside the first filter housing. The support guide rod is located below the lead screw, the lead screw is located below the baffle frame, the baffle frame is located on the outside of the first filter frame, and the support guide rod passes through the movable frame.

[0011] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, the second filter housing includes a first sealing plate disposed on the right side of the second filter housing, and a first bolt is disposed through the first sealing plate, with one end of the first bolt threadedly connected to the second filter housing.

[0012] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, the second filter housing further includes a first connecting rod fixedly disposed on the left side of the first sealing plate, and the left end of the first connecting rod is fixedly connected to the second filter frame on the right side. The second filter frame on the right side is connected to the second filter frame on the left side through the second connecting rod.

[0013] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, the second filter frame has a second mounting groove, and the inner wall of the second mounting groove has a second bolt hole. The high-grade filter screen is installed in the second mounting groove on the left side by means of a second external fastening bolt and the corresponding second bolt hole, and the ultra-high-grade filter screen is installed in the second mounting groove on the right side by means of a second external fastening bolt and the corresponding second bolt hole.

[0014] As a preferred embodiment of the air supply filter for cleanrooms described in this utility model, the processing housing includes a first partition fixedly disposed on the right side wall inside the processing housing, and second partitions are fixedly disposed on the upper and lower side walls inside the processing housing and at the upper and lower ends of the first partition.

[0015] As a preferred embodiment of the air supply filter for a cleanroom described in this utility model, the processing housing further includes a second sealing plate disposed on the front and rear sides of the processing housing, a second bolt being disposed through the second sealing plate, one end of the second bolt being threaded to the processing housing, and an ultraviolet germicidal lamp being installed on the inner end side of the second sealing plate, the ultraviolet germicidal lamp being disposed through the processing housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Under the action of the first motor and the transmission shaft, the left and right first filter frames are rotated and adjusted through the transmission frame, connecting frame and connecting shaft, so that the upper and lower parts of the primary and intermediate filters are rotated and swapped, and the upper filtered part and the lower unfiltered part are swapped for use. Under the action of the second motor and the lead screw, the moving frame moves and adjusts on the lead screw. The external high-pressure flushing water is sprayed out through the flushing pipe head to backwash and clean the primary and intermediate filter parts. Then, the external high-pressure gas is blown out through the air blowing pipe head to backwash and clean the flushed filter parts again, improving the cleaning effect. At the same time, the flushed parts are dried, so that the primary and intermediate filter parts can be cleaned and regenerated for use, reducing the waste of consumables. The filtered air is sterilized by the ultraviolet germicidal lamp, improving the quality of the supplied air. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the first filter housing, the second filter housing, and the processing housing of this utility model;

[0020] Figure 3 This is a schematic diagram of the first filter housing and the second motor structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the transmission frame, connecting frame, and first filter frame of this utility model;

[0022] Figure 5 This is a schematic diagram of the mobile frame structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the first sealing plate, the first connecting rod, the second filter frame, and the second connecting rod of this utility model.

[0024] In the diagram: 1. First filter housing; 101. Drive shaft; 102. First motor; 103. Transmission frame; 104. Connecting frame; 105. First filter frame; 106. First mounting slot; 107. First bolt hole; 108. Connecting shaft; 109. Lead screw; 110. Second motor; 111. Moving frame; 112. Support guide rod; 113. Flushing pipe head; 114. Air blowing pipe head; 115. Baffle frame; 2. Air inlet pipe; 3. 4. First opening slot; 5. Second filter housing; 6. First sealing plate; 7. First bolt; 8. First connecting rod; 9. Second filter frame; 10. Second connecting rod; 11. Second mounting slot; 12. Second bolt hole; 13. Connecting pipe; 14. Processing housing; 15. First partition; 16. Second partition; 17. Second sealing plate; 18. Second bolt; 19. Ultraviolet germicidal lamp; 20. Second opening slot. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] This utility model provides an air supply filter for cleanrooms. Under the action of a first motor and a drive shaft, the two left and right first filter frames are rotated and adjusted through a transmission frame, a connecting frame, and a connecting shaft, so that the upper and lower parts of the primary and intermediate filters are rotated and swapped, and the upper filtered part and the lower unfiltered part are used interchangeably. Under the action of a second motor and a lead screw, the movable frame moves and adjusts on the lead screw. High-pressure external flushing water is sprayed out through the flushing pipe to backwash and clean the primary and intermediate filter parts. Then, high-pressure external gas is blown out through the air blowing pipe to backwash and clean the flushed filter parts again, improving the cleaning effect. At the same time, the flushed parts are dried, thereby cleaning and regenerating the primary and intermediate filter parts and reducing the waste of consumables.

[0029] Figures 1-6 The diagram shown is an overall structural schematic of one embodiment of the air supply filter for a cleanroom according to this utility model. Please refer to [link / reference]. Figures 1-6 This embodiment of an air supply filter for a cleanroom includes a first filter housing 1. An air inlet pipe 2 is fixedly connected to the upper left end of the first filter housing 1. A first opening groove 3 is opened at the upper right end of the first filter housing 1. The first filter housing 1 is connected to a second filter housing 4 through the first opening groove 3. The second filter housing 4 is fixedly disposed at the right end of the first filter housing 1. The lower end of the second filter housing 4 is connected to a processing housing 6 through a connecting pipe 5 at the right side. The processing housing 6 is fixedly disposed at the right end of the first filter housing 1. A second opening groove 7 is opened at the upper right end of the processing housing 6 and the lower right end of the second filter housing 4. An air outlet pipe 8 is fixedly connected to the right end of the processing housing 6. A through-hole groove 9 is opened at the lower end of the first filter housing 1. A dirt collection pipe 10 is fixedly connected to the lower end of the first filter housing 1. A discharge pipe 11 is connected to the lower end of the dirt collection pipe 10.

[0030] The cleaning water generated during the cleaning of the primary and intermediate filtration sections falls into the sludge collection pipe 10 through the inlet groove 9, and is finally discharged through the outlet pipe 11.

[0031] The first filter housing 1 includes drive shafts 101 rotatably connected to the left and right side walls inside the first filter housing 1. The drive shaft 101 on the left side passes through the first filter housing 1 and is connected to the output shaft of the first motor 102. A drive frame 103 is fixedly connected to the inner end of the drive shaft 101. A connecting frame 104 is fixedly connected to the outer ring of the drive frame 103 near the right side. The outer end of the connecting frame 104 is fixedly mounted on the inner wall of the first filter frame 105. A lead screw 109 is rotatably connected to the front and rear side walls inside the first filter housing 1. The rear end of the lead screw 109 passes through the first filter housing 1 and is connected to the second motor 110. A movable frame 111 is mounted through the lead screw 109. A flushing pipe head 113 and an air blowing pipe head 114 are provided at the lower end of the movable frame 111. The first filter frame 105 is open A first mounting groove 106 is provided, and a first bolt hole 107 is provided on the right side of the first mounting groove 106. The left and right transmission frames 103 are connected by a connecting shaft 108. The primary filter screen is installed in the first mounting groove 106 on the left side by a first external fastening bolt and the corresponding first bolt hole 107. The intermediate filter screen is installed in the first mounting groove 106 on the right side by a first external fastening bolt and the corresponding first bolt hole 107. The front and rear side walls of the first filter housing 1 are fixedly provided with a support guide rod 112 and a baffle frame 115. The support guide rod 112 is located below the lead screw 109, the lead screw 109 is located below the baffle frame 115, and the baffle frame 115 is located on the outside of the first filter frame 105. The support guide rod 112 passes through the movable frame 111.

[0032] The flushing head 113 is connected to an external high-pressure water supply device, and the air blowing head 114 is connected to an external high-pressure air blowing device. The primary filter and the intermediate filter are both composed of upper and lower parts, with the center line of the transmission frame 103 as the dividing line. The direction of this dividing line is the same as that of the connecting frame 104. When the upper part of the filter needs to be cleaned, it is rotated to the lower part, and the unfiltered part below is rotated to the upper part for filtration. Differential pressure sensors are installed at each stage of the filter. The differential pressure sensor monitors the change in differential pressure to determine whether the filter is clogged and needs to be cleaned or replaced. This differential pressure detection part is a prior art structure. The primary and intermediate filters are washable and regenerable metal filters such as stainless steel sintered felt. A baffle frame 115 is installed to separate the upper filter cavity and the lower cleaning cavity.

[0033] The second filter housing 4 includes a first sealing plate 401 disposed on the right side of the second filter housing 4. A first bolt 402 is disposed through the first sealing plate 401. One end of the first bolt 402 is threaded to the second filter housing 4. The second filter housing 4 also includes a first connecting rod 403 fixedly disposed on the left side of the first sealing plate 401. The left end of the first connecting rod 403 is fixedly connected to the second filter frame 404 on the right side. The second filter frame 404 on the right side is connected to the second filter frame 404 on the left side through a second connecting rod 405. A second mounting groove 406 is provided in the second filter frame 404. A second bolt hole 407 is provided on the inner wall of the second mounting groove 406. A high-grade filter screen is installed in the second mounting groove 406 on the left side through a second external fastening bolt in conjunction with the corresponding second bolt hole 407. An ultra-high-grade filter screen is installed in the second mounting groove 406 on the right side through a second external fastening bolt in conjunction with the corresponding second bolt hole 407.

[0034] Remove the first bolt 402, and pull out the second filter frame 404 through the first sealing plate 401, the first connecting rod 403 and the second connecting rod 405 to replace and maintain the high-grade or ultra-high-grade filter part. A first sealing ring is provided between the first sealing plate 401 and the second filter housing 4.

[0035] The processing housing 6 includes a first partition 601 fixedly disposed on the right side wall inside the processing housing 6. Second partitions 602 are fixedly disposed on the upper and lower side walls inside the processing housing 6 and at the upper and lower ends of the first partition 601. The processing housing 6 also includes a second sealing plate 603 disposed on the front and rear sides of the processing housing 6. A second bolt 604 is disposed through the second sealing plate 603. One end of the second bolt 604 is threaded to the processing housing 6. An ultraviolet germicidal lamp 605 is installed on the inner end side of the second sealing plate 603. The ultraviolet germicidal lamp 605 is disposed through the processing housing 6.

[0036] A second sealing ring is provided between the housing 6 and the second sealing plate 603. The filtered air is sterilized by the ultraviolet germicidal lamp 605 to improve the quality of the incoming air. The second bolt 604 is removed and the ultraviolet germicidal lamp 605 is inspected, maintained or replaced through the second sealing plate 603.

[0037] Combination Figures 1-6The specific usage process of the air supply filter for a cleanroom according to this embodiment is as follows: After passing through multiple stages of filtration, the filtered air is sterilized by an ultraviolet germicidal lamp 605 to improve the quality of the incoming air. The first baffle 601 and the second baffle 602 extend the flow time of the gas in the treatment housing 6, thereby improving the sterilization effect. The flushing pipe head 113 is connected to an external high-pressure water supply device, and the blowing pipe head 114 is connected to an external high-pressure air blowing device. Under the action of the first motor 102 and the drive shaft 101, the two left and right first filter frames 105 are rotated and adjusted through the drive frame 103, the connecting frame 104, and the connecting shaft 108, so that the primary and intermediate filtration sections... The upper and lower parts are rotated and interchanged, and the upper filter part and the lower unfiltered part are swapped. Under the action of the second motor 110 and the lead screw 109, the moving frame 111 moves and adjusts on the lead screw 109. The external high-pressure flushing water is sprayed out through the flushing pipe head 113 to backwash and clean the primary and intermediate filter parts. Then, the external high-pressure gas is blown out through the air blowing pipe head 114 to back-blow and clean the flushed filter parts again, improving the cleaning effect. At the same time, the flushed parts are dried. The first bolt 402 is removed, and the second filter frame 404 is pulled out through the first sealing plate 401, the first connecting rod 403 and the second connecting rod 405 to replace and maintain the high-grade or ultra-high-grade filter parts.

[0038] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An air supply filter for a cleanroom, comprising a first filter housing (1), characterized in that: An air inlet pipe (2) is fixedly connected to the left end of the first filter housing (1) near the top. A first opening groove (3) is opened at the right end of the first filter housing (1) near the top. The first filter housing (1) is connected to the second filter housing (4) through the first opening groove (3). The second filter housing (4) is fixedly installed at the right end of the first filter housing (1). The lower end of the second filter housing (4) is connected to the processing housing (6) through a connecting pipe (5) near the right side. The processing housing (6) is fixedly installed at the right end of the first filter housing (1). A second opening groove (7) is opened at the upper end of the processing housing (6) near the right side and at the lower end of the second filter housing (4) near the right side. An air outlet pipe (8) is fixedly connected at the right end of the processing housing (6). A through slot (9) is opened at the lower end of the first filter housing (1). A dirt collection pipe (10) is fixedly connected at the lower end of the first filter housing (1). A discharge pipe (11) is connected at the lower end of the dirt collection pipe (10). The first filter housing (1) includes a drive shaft (101) rotatably connected to the left and right side walls inside the first filter housing (1). The drive shaft (101) on the left side passes through the first filter housing (1) and is connected to the output shaft of the first motor (102). A drive frame (103) is fixedly connected to the inner end of the drive shaft (101). A connecting frame (104) is fixedly connected to the outer ring of the drive frame (103) near the right side. The outer end of the connecting frame (104) is fixedly set on the inner wall of the first filter frame (105). A lead screw (109) is rotatably connected to the front and rear side walls inside the first filter housing (1). The rear end of the lead screw (109) passes through the first filter housing (1) and is connected to the second motor (110). A movable frame (111) is provided through the lead screw (109). A flushing pipe head (113) and an air blowing pipe head (114) are provided at the lower end of the movable frame (111).

2. The air supply filter for a cleanroom according to claim 1, characterized in that: The first filter frame (105) has a first mounting groove (106) and a first bolt hole (107) on the right side of the first mounting groove (106). The left and right transmission frames (103) are connected by a connecting shaft (108). The primary filter screen is installed in the first mounting groove (106) on the left side by a first external fastening bolt and the corresponding first bolt hole (107). The intermediate filter screen is installed in the first mounting groove (106) on the right side by a first external fastening bolt and the corresponding first bolt hole (107).

3. The air supply filter for a cleanroom according to claim 1, characterized in that: The first filter housing (1) is fixedly provided with a support guide rod (112) and a baffle frame (115) on the front and rear side walls. The support guide rod (112) is located below the lead screw (109), the lead screw (109) is located below the baffle frame (115), the baffle frame (115) is located on the outside of the first filter frame (105), and the support guide rod (112) passes through the movable frame (111).

4. The air supply filter for a cleanroom according to claim 1, characterized in that: The second filter housing (4) includes a first sealing plate (401) disposed on the right side of the second filter housing (4), and a first bolt (402) is disposed through the first sealing plate (401), one end of the first bolt (402) being threadedly connected to the second filter housing (4).

5. The air supply filter for a cleanroom according to claim 4, characterized in that: The second filter housing (4) also includes a first connecting rod (403) fixedly disposed on the left side of the first sealing plate (401). The left end of the first connecting rod (403) is fixedly connected to the second filter frame (404) on the right side. The second filter frame (404) on the right side is connected to the second filter frame (404) on the left side through the second connecting rod (405).

6. The air supply filter for a cleanroom according to claim 5, characterized in that: The second filter frame (404) has a second mounting groove (406) and a second bolt hole (407) on the inner wall of the second mounting groove (406). The high-grade filter screen is installed in the second mounting groove (406) on the left side by means of a second external fastening bolt and the corresponding second bolt hole (407). The ultra-high-grade filter screen is installed in the second mounting groove (406) on the right side by means of a second external fastening bolt and the corresponding second bolt hole (407).

7. The air supply filter for a cleanroom according to claim 1, characterized in that: The processing housing (6) includes a first partition (601) fixedly disposed on the right side wall inside the processing housing (6), and a second partition (602) is fixedly disposed on the upper and lower side walls inside the processing housing (6) and the upper and lower ends of the first partition (601).

8. The air supply filter for a cleanroom according to claim 1, characterized in that: The processing housing (6) further includes a second sealing plate (603) disposed on the front and rear sides of the processing housing (6). A second bolt (604) is disposed through the second sealing plate (603). One end of the second bolt (604) is threaded to the processing housing (6). An ultraviolet germicidal lamp (605) is installed on the inner end side of the second sealing plate (603). The ultraviolet germicidal lamp (605) is disposed through the processing housing (6).

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