Filter for gas distribution pipeline of clean room

Abstract

The utility model provides an air distribution pipeline filter of a clean room, which relates to the technical field of air distribution filtering and comprises an air inlet pipe, an air outlet pipe and a filtering piece arranged between the air inlet pipe and the air outlet pipe, and the air inlet pipe, the filtering piece and the air outlet pipe are communicated in sequence. The filter part comprises an outer pipe, an opening formed in the upper end of the outer pipe and an upper cover arranged on the opening, a filter element is embedded in the outer pipe, a lower sealing ring is arranged at the lower end of the inner wall of the outer pipe, a plurality of upper sealing rings are installed in the inner wall of the upper cover, and the lower sealing rings and the upper sealing rings are all semi-ring-shaped and are arranged in a mirror image mode; fixing rings are arranged at the two ends of the filter element respectively and located between the close ends of the upper sealing ring and the lower sealing ring. According to the utility model, the opening is formed in the outer pipe, so that the filter element is convenient to replace, and the upper sealing ring in the upper cover is driven to get close to and get away from each other in the opening and closing processes of the upper cover, so that the filter element is unlocked and fixed, and the unlocking and the fixing of the replacement of the filter element are quickly realized.

Description

Technical Field

[0001] The utility model relates to the technical field of air distribution and filtering, in particular to a filter for a clean room air distribution pipeline. Background Art

[0002] Cleanrooms are dust-free workshops and clean rooms. Their main function is to control pollution at high standards in the environment. Without cleanrooms, pollution-sensitive parts cannot be mass-produced. The cleanliness of cleanrooms and the continuous stability of pollution control are the core standards for testing the quality of cleanroom operations. In the process of controlling the cleanliness of the environment in the cleanroom area, the cleanroom air distribution system plays an important role in the replacement of the indoor environment. High-cleanliness air distribution can effectively control the concentration of airborne particles, thereby achieving an appropriate particle cleanliness level.

[0003] In the prior art, the air distribution system of a clean room usually draws air into the air duct through a fan, filters it through a filter, and then discharges the filtered air from the air outlet duct into the clean room. Since the clean room has extremely high requirements for the cleanliness of the discharged air, the filter element in the filter needs to be replaced frequently; however, the seal of the filter element in the existing filter during replacement and installation is only sealed by a sealing ring or a sealant, which is a relatively simple sealing form and has poor sealing performance. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a clean room air distribution duct filter which can quickly and conveniently realize filter core replacement and maintain high sealing performance of the filter core after installation.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A clean room air distribution duct filter comprises an air inlet pipe, an air outlet pipe and a filter element arranged between the air inlet pipe and the air outlet pipe, wherein the air inlet pipe, the filter element and the air outlet pipe are sequentially connected to each other;

[0007] The filter element includes an outer tube, an opening on the outer tube and an upper cover arranged on the opening. A filter core is embedded in the outer tube, a lower sealing ring is arranged at the lower end of the inner wall of the outer tube, and multiple upper sealing rings are installed in the inner wall of the upper cover. The multiple lower sealing rings and the multiple upper sealing rings are all semi-annular and mirror-imaged. Fixed rings are respectively arranged at both ends of the filter core, and the fixed rings are located between the upper sealing ring and the end close to the lower sealing ring.

[0008] Furthermore, the ends of the two fixing rings facing away from each other are respectively abutted against the plug-in rings, the two plug-in rings are both arranged in a cone shape, the ends with smaller diameters of the two plug-in rings face away from each other, and are respectively installed with connecting rings, and the ends with larger diameters of the two plug-in rings are located between the ends close to the upper sealing ring and the lower sealing ring.

[0009] Furthermore, the opening ends of the lower sealing rings are respectively provided with inner convex parts, and the opening ends of the upper sealing rings are respectively provided with outer convex parts, and two adjacent inner convex parts and outer convex parts are plugged into each other.

[0010] Furthermore, the inner rings of the lower sealing ring and the upper sealing ring are both provided with convex rings inserted into the outer rings of the fixed ring and the plug-in ring, and the outer rings of the fixed ring and the plug-in ring are respectively provided with grooves plugged into the convex rings in the inner rings of the lower sealing ring and the upper sealing ring.

[0011] Furthermore, the outer rings of the fixed ring and the plug-in ring are respectively provided with convex rings, and the inner rings of the lower sealing ring and the upper sealing ring are respectively provided with grooves plugged with the convex rings on the outer rings of the fixed ring and the plug-in ring.

[0012] Furthermore, the convex ring includes a hard base and a rubber layer wrapped around the hard base, and the outer ring of the rubber layer is in an arc shape for easy insertion into the groove.

[0013] Furthermore, a fixing ring is installed at one end of the air inlet pipe and the air outlet pipe close to the outer pipe, and the two fixing rings are respectively connected and communicated with a plug nozzle at one end close to the outer pipe. The plug nozzle is conical, and the end with a smaller diameter of the plug nozzle is inserted into the plug ring. The connecting ring and the fixing ring are connected to the outer pipe by multiple locking bolts, and threaded holes threadedly connected to the multiple locking bolts are respectively provided at both ends of the connecting ring, the fixing ring and the outer pipe.

[0014] Furthermore, a first fixing block is provided at one end of the upper cover away from the hinge, and a second fixing block is provided on the outer surface of the outer tube. The first fixing block is located directly above the second fixing block. The first fixing block and the second fixing block are connected by a fixing bolt, and both the first fixing block and the second fixing block are provided with internal threads that are screwed with the fixing bolts.

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

[0016] In the present application, an opening is provided on the outer tube to facilitate replacement of the filter element, and the filter element is unlocked and fixed by moving the upper sealing ring in the upper cover closer or farther away during the process of opening and closing the upper cover, thereby quickly and conveniently achieving unlocking and fixing for replacement of the filter element; and two plug-in rings are provided in the outer tube to achieve large-range positioning of the filter element, and precise positioning is achieved through the lower sealing ring, thereby facilitating rapid installation of the filter element; wherein the provision of the plug-in ring can achieve an isolated state between the filter element and the inner wall of the outer tube during the process of air inlet and outlet, thereby preventing impurities in the filter element from being adsorbed on the inner wall of the outer tube, and preventing impurities from escaping from the inner wall of the outer tube when the upper cover is opened.

[0017] The present application enables the lower sealing ring and the upper sealing ring to have better tight contact at the fracture by means of the inner convex part and the outer convex part interlocking and plugging with each other, thereby further improving the sealing performance of the lower sealing ring and the upper sealing ring.

[0018] The present application can realize the positioning of the filter element by inserting the convex ring into the groove, and can also improve the sealing performance of the cooperation between the lower sealing ring and the upper sealing ring.

[0019] The present application makes the rubber layer more directional by setting a hard base, avoids curling of the rubber layer when it is inserted into the groove, and avoids crushing of the rubber layer to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0021] Figure 2 It is the front view of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the lower sealing ring in the utility model

[0023] Figure 4 This is a schematic diagram of the structure of the upper sealing ring in the utility model;

[0024] Figure 5 For this utility model Figure 2 Enlarged view of point A in the middle.

[0025] In the figure: 1, air inlet pipe; 2, air outlet pipe; 3, filter element; 31, outer tube; 32, upper cover; 33, lower sealing ring; 34, upper sealing ring; 35, inner convex part; 36, outer convex part; 37, convex ring; 371, hard base; 372, rubber layer; 38, groove; 39, plug-in ring; 4, connecting ring; 5, fixing ring; 51, plug-in nozzle; 6, filter element; 61, fixing ring. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] Example 1: Figure 1-5 A clean room air distribution duct filter shown in the figure comprises an air inlet pipe 1, an air outlet pipe 2 and a filter element 3 arranged between the air inlet pipe 1 and the air outlet pipe 2, wherein the air inlet pipe 1, the filter element 3 and the air outlet pipe 2 are sequentially connected to each other;

[0028] The filter element 3 comprises an outer tube 31, an opening provided on the outer tube 31 and an upper cover 32 rotatably arranged on the opening by hinges, a filter element 6 is embedded in the outer tube 31, a lower sealing ring 33 is arranged at the lower end of the inner wall of the outer tube 31, a plurality of upper sealing rings 34 are installed in the inner wall of the upper cover 32, the plurality of lower sealing rings 33 and the plurality of upper sealing rings 34 are all semi-annular and are arranged in a mirror image, a fixing ring 61 is respectively arranged at both ends of the filter element 6, the fixing ring 61 is located between the ends close to the upper sealing ring 34 and the lower sealing ring 33; the ends of the two fixing rings 61 which are away from each other are respectively in contact with the plug-in rings 39, the two plug-in rings 39 are both arranged in a cone shape, the ends of the two plug-in rings 39 with smaller diameters are away from each other, and a connecting ring 4 is respectively installed, and the ends of the two plug-in rings 39 with larger diameters are located between the ends close to the upper sealing ring 34 and the lower sealing ring 33;

[0029] Specifically, an opening is provided on the outer tube 31 to facilitate replacement of the filter element 6, and the upper sealing ring 34 in the upper cover 32 is moved closer and further away during opening and closing of the upper cover 32 to unlock and fix the filter element 6, so that the filter element 6 can be unlocked and fixed for replacement quickly and conveniently, and the filter element 6 can be positioned over a large range by means of two plug-in rings 39 provided in the outer tube 31, and then precise positioning is achieved by means of the lower sealing ring 33, so as to facilitate rapid installation of the filter element 6, wherein the provision of the plug-in ring 39 can achieve an isolated state between the filter element 6 and the inner wall of the outer tube 31 during the process of air intake and exhaust, thereby preventing impurities in the filter element 6 from being adsorbed on the inner wall of the outer tube 31, and preventing impurities from overflowing from the inner wall of the outer tube 31 when the upper cover 32 is opened.

[0030] Furthermore, the opening ends of the lower sealing ring 33 are respectively provided with inner convex parts 35, and the opening ends of the upper sealing ring 34 are respectively provided with outer convex parts 36, and two adjacent inner convex parts 35 and outer convex parts 36 are plugged into each other;

[0031] Specifically, the inner convex portion 35 and the outer convex portion 36 are engaged with each other so that the lower sealing ring 33 and the upper sealing ring 34 can be in better close contact at the fracture, further improving the sealing performance of the lower sealing ring 33 and the upper sealing ring 34.

[0032] Furthermore, the inner rings of the lower sealing ring 33 and the upper sealing ring 34 are provided with convex rings 37 inserted into the outer rings of the fixed ring 61 and the plug-in ring 39, and the outer rings of the fixed ring 61 and the plug-in ring 39 are respectively provided with grooves 38 that are plugged into the convex rings 37 in the inner rings of the lower sealing ring 33 and the upper sealing ring 34.

[0033] Furthermore, the outer rings of the fixing ring 61 and the plug-in ring 39 are respectively provided with convex rings 37, and the inner rings of the lower sealing ring 33 and the upper sealing ring 34 are respectively provided with grooves 38 for plugging with the fixing ring 61 and the convex ring 37 on the outer rings of the plug-in ring 39;

[0034] Specifically, the insertion of the protruding ring 37 and the groove 38 can realize the positioning of the filter element 6 and improve the sealing performance of the cooperation between the lower sealing ring 33 and the upper sealing ring 34.

[0035] Furthermore, the convex ring 37 includes a hard base 371 and a rubber layer 372 wrapped around the hard base 371, and the outer ring of the rubber layer 372 is an arc shape for easy insertion into the groove 38;

[0036] Specifically, the hard base 371 is provided to make the rubber layer 372 more directional, thereby preventing the rubber layer 372 from curling when inserted into the groove 38 , thereby greatly avoiding the phenomenon of crushing the rubber layer 372 .

[0037] Furthermore, a fixing ring 5 is installed at one end of the air inlet pipe 1 and the air outlet pipe 2 close to the outer pipe 31. The two fixing rings 5 ​​are respectively connected and communicated with a plug nozzle 51 at one end close to the outer pipe 31. The plug nozzle 51 is conical, and the end with a smaller diameter of the plug nozzle 51 is inserted into the plug ring 39. The connecting ring 4 and the fixing ring 5 are connected to the outer pipe 31 through a plurality of locking bolts. The connecting ring 4, the fixing ring 5 and the two ends of the outer pipe 31 are respectively provided with threaded holes threadedly connected to the plurality of locking bolts.

[0038] Furthermore, a first fixing block is provided at one end of the upper cover 32 away from the hinge, and a second fixing block is provided on the outer surface of the outer tube 31. The first fixing block is located directly above the second fixing block. The first fixing block and the second fixing block are connected by fixing bolts. Both the first fixing block and the second fixing block are provided with internal threads that are screwed with the fixing bolts.

[0039] Although the preferred embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications and substitutions may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Clean room gas distribution duct filter, characterized by: It comprises an air inlet pipe (1), an air outlet pipe (2), and a filter element (3) arranged between the air inlet pipe (1) and the air outlet pipe (2), wherein the air inlet pipe (1), the filter element (3) and the air outlet pipe (2) are sequentially connected to each other; The filter element (3) comprises an outer tube (31), an opening formed on the outer tube (31) and an upper cover (32) arranged on the opening; a filter core (6) is embedded in the outer tube (31); a lower sealing ring (33) is arranged at the lower end of the inner wall of the outer tube (31); a plurality of upper sealing rings (34) are installed in the inner wall of the upper cover (32); the plurality of lower sealing rings (33) and the plurality of upper sealing rings (34) are both semi-annular and arranged in a mirror image; fixing rings (61) are respectively arranged at both ends of the filter core (6); the fixing ring (61) is located between the upper sealing ring (34) and one end of the lower sealing ring (33) that is close to the other.

2. The clean room air distribution duct filter according to claim 1, characterized in that: The ends of the two fixing rings (61) facing away from each other are respectively in contact with the plug-in rings (39); the two plug-in rings (39) are both arranged in a conical shape; the ends of the two plug-in rings (39) with smaller diameters face away from each other and are respectively provided with connecting rings (4); the ends of the two plug-in rings (39) with larger diameters are located between the ends close to the upper sealing ring (34) and the lower sealing ring (33).

3. The clean room air distribution duct filter according to claim 2, characterized in that: The opening ends of the lower sealing ring (33) are respectively provided with inner convex parts (35), and the opening ends of the upper sealing ring (34) are respectively provided with outer convex parts (36), and two adjacent inner convex parts (35) and outer convex parts (36) are plugged into each other.

4. The clean room air distribution duct filter according to claim 3, characterized in that: The inner rings of the lower sealing ring (33) and the upper sealing ring (34) are both provided with convex rings (37) inserted into the outer rings of the fixing ring (61) and the plug-in ring (39), and the outer rings of the fixing ring (61) and the plug-in ring (39) are respectively provided with grooves (38) plugged into the convex rings (37) in the inner rings of the lower sealing ring (33) and the upper sealing ring (34).

5. The clean room air distribution duct filter according to claim 4, characterized in that: The outer rings of the fixing ring (61) and the plug-in ring (39) are respectively provided with convex rings (37), and the inner rings of the lower sealing ring (33) and the upper sealing ring (34) are respectively provided with grooves (38) for plugging with the convex rings (37) on the outer rings of the fixing ring (61) and the plug-in ring (39).

6. The clean room air distribution duct filter according to claim 5, characterized in that: The convex ring (37) comprises a hard base (371) and a rubber layer (372) wrapped around the hard base (371), and the outer ring of the rubber layer (372) is in an arc shape.

7. The clean room air distribution duct filter according to claim 6, characterized in that: A fixing ring (5) is installed at one end of the air inlet pipe (1) and the air outlet pipe (2) close to the outer pipe (31); the ends of the two fixing rings (5) close to the outer pipe (31) are respectively connected and communicated with a plug nozzle (51); the plug nozzle (51) is conical, and the end with a smaller diameter of the plug nozzle (51) is inserted into the plug ring (39); the connecting ring (4) and the fixing ring (5) are connected to the outer pipe (31) by a plurality of locking bolts; threaded holes threadedly connected to the plurality of locking bolts are respectively provided at both ends of the connecting ring (4), the fixing ring (5) and the outer pipe (31).

8. The clean room air distribution duct filter according to claim 1, characterized in that: A first fixing block is disposed at one end of the upper cover (32), and a second fixing block is disposed on the outer surface of the outer tube (31); the first fixing block is located directly above the second fixing block, and the first fixing block and the second fixing block are connected via fixing bolts, and the first fixing block and the second fixing block are both provided with internal threads that are screwed with the fixing bolts.

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