Sealing device for clean room air pipe
By designing a sealing device including a sealing mechanism and a clamping mechanism in the clean room air duct, the problem of lax sealing caused by aging of the sealant is solved, and the sealing property and the purity of the clean air at the air duct are significantly improved.
Patent Information
- Application Number
- CN202422037207.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the clean room air duct, the sealant may age or corrode after long-term use, resulting in gaps between the sealing frames and contaminate the clean air.
A sealing device for clean room air ducts is designed, including two ventilation ducts, a connecting frame, a fixing bolt, a sealing mechanism and a clamping mechanism. The sealing mechanism further seals the gap between the connecting frame through the design of the sealing frame and the sealing tape; the clamping mechanism ensures the correct alignment and fixation of the sealing frame through the cooperation of the supporting block and the limiting assembly.
It effectively improves the sealing of the air duct connection, reduces the pollution of clean air, and extends the service life of the sealing device.
Smart Images
Figure CN222977658U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of clean rooms, and particularly to a sealing device for clean room air ducts. Background Art
[0002] A clean air chamber, also known as a dust-free room or a clean room, is a specially designed enclosed space aimed at controlling pollutants such as dust, microorganisms, chemical vapors, etc., in order to provide a highly clean environment, which is crucial for many industries, especially in the fields of semiconductor manufacturing, biopharmaceuticals, precision machining, aerospace, etc.
[0003] The clean room air duct is an important part of the clean room air conditioning system and is an important passage for air circulation and air purification in the clean room. When installing and fixing the air duct, generally, multiple air ducts are connected end to end for fixation, extending a relatively long air duct passage required for the clean room.
[0004] When air ducts are produced, connection frames for fixation are generally fixed at both ends of the air ducts. The connection frames of two adjacent air ducts are abutted together, and then fixed with fixing bolts to complete the splicing of the air ducts. When the connection frames on two adjacent air ducts are abutted together, although a layer of sealant is fixed on the abutting surface for the airtightness of the air ducts, during long-term use, the sealant may age or be corroded, resulting in gaps between the seal frames, causing the clean air in the air ducts to be polluted. Summary of the Utility Model
[0005] The purpose of this application is to provide a sealing device for clean room air ducts to solve the problem proposed in the above background art that although a layer of sealant is fixed on the abutting surface for the airtightness of the air ducts, during long-term use, the sealant may age or be corroded, resulting in gaps between the seal frames, causing the clean air in the air ducts to be polluted.
[0006] The specific technical solutions adopted by this application to achieve the above purpose are as follows:
[0007] A sealing device for clean room air ducts includes two ventilation ducts. Connection frames are fixed on both of the two ventilation ducts. A fixing bolt is fixedly connected between the two connection frames. A sealing mechanism is arranged on the two connection frames, and a clamping mechanism is arranged on the two connection frames.
[0008] By adopting the above technical solution, two connection frames are fixed together by fixing bolts. Then, between two adjacent ventilation pipes, a sealing mechanism is sleeved on the two connection frames, and then the sealing mechanism is fixed by a clamping mechanism, so that the sealing mechanism sleeves the connection frames and further seals the gap between the two connection frames in contact, thereby further improving the sealing performance between the two connection frames in contact.
[0009] Further, the sealing mechanism includes a first sealing frame arranged on the two connection frames. A second sealing frame is arranged on the first sealing frame. Sealing grooves are formed on both the first sealing frame and the second sealing frame. Sealing rubber strips are fixed on both the first sealing frame and the second sealing frame. The sealing rubber strips are located in the sealing grooves. Grooves corresponding to the connection frames are formed on the sealing rubber strips. A number of uniformly distributed reinforcing ribs are fixed on both sides of the first sealing frame and the second sealing frame.
[0010] By adopting the above technical solution, then the sealing grooves on the first sealing frame and the second sealing frame are faced towards the connection frames, and then the first sealing frame and the second sealing frame are combined together, so that the connection frames enter the sealing grooves. The sealing rubber strips on the first sealing frame and the second sealing frame are in contact with the connection frames, and the connection frames are stuck in the grooves of the sealing rubber strips, thereby reducing the possibility of poor sealing between the two connection frames and improving the sealing performance between the two connection frames.
[0011] Further, limiting strips are fixed on both sides of the ventilation pipe. Limiting grooves are formed on both the first sealing frame and the second sealing frame. One end of the limiting groove facing the limiting strip is open.
[0012] By adopting the above technical solution, the limiting grooves on the first sealing frame and the second sealing frame are made to correspond to the limiting strips fixed on the ventilation pipe, and the limiting strips slide in the limiting grooves, thereby reducing the possibility of deviation when the first sealing frame and the second sealing frame are combined together.
[0013] Further, a flared opening is formed at the open end of the limiting groove.
[0014] By adopting the above technical solution, when the limiting grooves on the first sealing frame and the second sealing frame approach the limiting strips, under the guidance of the flared opening, the limiting strips are inserted into the limiting grooves, thereby facilitating the insertion of the limiting strips into the limiting grooves.
[0015] Further, a slope is formed at the edge of the groove of the sealing rubber strip, and the edge of the groove of the sealing rubber strip facing the connection frame is open.
[0016] By adopting the above technical solution, when the sealing rubber strips on the first sealing frame and the second sealing frame approach the connection frames, under the guidance of the slopes of the sealing rubber strips, the sealing rubber strips are made to face the connection frames directly, thereby reducing the deviation when the sealing rubber strips are in contact with the connection frames.
[0017] Further, the clamping mechanism includes two first support blocks symmetrically fixed on the first sealing frame, two symmetrical second support blocks are fixed on the second sealing frame, and a limiting component is arranged between the first support block and the second support block.
[0018] By adopting the above technical solution, the first support block and the second support block are made to approach each other, and then the limiting component is used for clamping and fixing, so that when the first sealing frame and the second sealing frame are combined together, they can be firmly fixed on the connecting frame.
[0019] Further, the limiting component includes a limiting plate fixed on the first support block, a limiting groove corresponding to the limiting plate is formed on the second support block, a limiting block is arranged in the limiting groove, and limiting teeth are formed on both the limiting block and the limiting plate and face in opposite directions.
[0020] By adopting the above technical solution, after the first support block and the second support block approach each other, the limiting plate is inserted into the limiting groove on the second support block, and then the limiting block fixes the limiting plate, so that it is convenient for the first support block and the second support block to only approach each other and reduce the possibility of the first support block and the second support block moving away from each other.
[0021] Further, the limiting block is slidably connected to the second support block, a limiting spring is arranged between the limiting block and the second support block, and both ends of the limiting spring are fixedly connected to the limiting block and the second support block.
[0022] By adopting the above technical solution, when the first sealing frame and the second sealing frame are completely in contact with each other, the limiting spring pushes the limiting block, so that it is convenient for the limiting block to clamp the limiting plate.
[0023] In summary, the present application includes at least one of the following beneficial effects;
[0024] 1. In the present application, by facing the sealing grooves on the first sealing frame and the second sealing frame towards the connecting frame, then combining the first sealing frame and the second sealing frame together, enabling the connecting frame to enter the sealing grooves, the sealing rubber strips on the first sealing frame and the second sealing frame are in contact with the connecting frame, the connecting frame is stuck in the grooves of the sealing rubber strips, the corresponding first support block and the second support block approach each other, then the limiting plate on the first support block is inserted into the limiting groove on the second support block, and then the inclined surface of the limiting teeth on the limiting plate abuts against the inclined surface of the limiting teeth on the limiting block, and at the same time the limiting block presses the limiting spring. When the first sealing frame and the second sealing frame are completely in contact with each other, the limiting spring pushes the limiting block to make the limiting block clamp the limiting plate, so that the first sealing frame and the second sealing frame are buckled in the corresponding connecting frame, achieving the purpose of improving the sealing performance of the connecting frame used for connecting two ventilation pipes and further reducing the possibility of air leakage and pollution between the two connecting frames.
[0025] 2. In this application, when the first sealing frame and the second sealing frame are moved closer to each other, the limiting grooves on the first sealing frame and the second sealing frame are aligned with the limiting strips fixed on the ventilation pipe, and the limiting strips slide in the limiting grooves to guide the first sealing frame and the second sealing frame, so as to align the first sealing frame and the second sealing frame and reduce the possibility of deviation of the first sealing frame, the second sealing frame and the connecting frame. Description of the Drawings
[0026] Figure 1 is the first three-dimensional structural schematic diagram of the sealing device for the clean room air duct in this application;
[0027] Figure 2 is the partial three-dimensional structural schematic diagram of the sealing device for the clean room air duct in this application;
[0028] Figure 3 is in this application Figure 2 The enlarged schematic diagram at position A;
[0029] Figure 4 is in this application Figure 2 The enlarged schematic diagram at position B.
[0030] Description of the Reference Numerals:
[0031] 1. Ventilation pipe; 2. Connecting frame; 3. Fixing bolt; 4. Sealing mechanism; 41. First sealing frame; 42. Second sealing frame; 43. Sealing rubber strip; 44. Reinforcing rib; 45. Limiting strip; 46. Limiting groove; 5. Clamping mechanism; 51. First support block; 52. Second support block; 53. Limiting component; 531. Limiting plate; 532. Limiting block; 533. Limiting spring. Detailed Description of the Embodiment
[0032] The following further describes this application in detail with reference to Figure 1 —4.
[0033] The embodiment of this application discloses a sealing device for a clean room air duct.
[0034] Referring to Figure 1 , Figure 2 and Figure 3 , the sealing device for the clean room air duct includes two ventilation pipes 1, connecting frames 2 are fixed on both of the two ventilation pipes 1, fixing bolts 3 are fixedly connected between the two connecting frames 2, a sealing mechanism 4 is arranged on the two connecting frames 2, and a clamping mechanism 5 is arranged on the two connecting frames 2.
[0035] When installing the air ducts in the clean room, make the connecting frames 2 between adjacent ventilation ducts 1 abut against each other, then use the fixing bolts 3 to fix the two connecting frames 2 together. Then, between two adjacent ventilation ducts 1, sleuth the sealing mechanism 4 on the two connecting frames 2, and then use the clamping mechanism 5 to fix the sealing mechanism 4, so that the sealing mechanism 4 sleuths the connecting frames 2 to further seal the gap between the two connecting frames 2 in contact, and at the same time reduce the contact between the fixing bolts 3 and the outside world, reduce the corrosion of the fixing bolts 3. By making the connecting frames 2 between two adjacent ventilation ducts 1 abut against each other and using the fixing bolts 3 for fixation, and then on the two connecting frames 2, using the clamping mechanism 5 to fix the sealing mechanism 4, the sealing performance of the contact between the two connecting frames 2 can be further improved, and the possibility of pollution inside the ventilation duct 1 can be reduced.
[0036] Refer to Figure 2 、 Figure 3 and Figure 4 As shown in, the sealing mechanism 4 includes a first sealing frame 41 arranged on the two connecting frames 2. A second sealing frame 42 is arranged on the first sealing frame 41. Sealing grooves are formed on both the first sealing frame 41 and the second sealing frame 42. Sealing rubber strips 43 are fixed on both the first sealing frame 41 and the second sealing frame 42. The sealing rubber strips 43 are located in the sealing grooves. Grooves corresponding to the connecting frames 2 are formed on the sealing rubber strips 43. A number of uniformly distributed reinforcing ribs 44 are fixed on both sides of the first sealing frame 41 and the second sealing frame 42.
[0037] In addition, limiting strips 45 are fixed on both sides of the ventilation duct 1. Limiting grooves 46 are formed on both the first sealing frame 41 and the second sealing frame 42. One end of the limiting groove 46 facing the limiting strip 45 is open.
[0038] And, a flared opening is formed at the open end of the limiting groove 46.
[0039] Moreover, inclined surfaces are formed at the edges of the grooves of the sealing rubber strip 43, and the grooves of the sealing rubber strip 43 are open at the edges facing the connecting frames 2.
[0040] They are pressed against each other between two connecting frames 2, and then fixed with fixing bolts 3. Then, the sealing grooves on the first sealing frame 41 and the second sealing frame 42 are aligned with the connecting frame 2. Next, the first sealing frame 41 and the second sealing frame 42 are joined together, allowing the connecting frame 2 to enter the sealing groove. The sealing rubber strips 43 on the first sealing frame 41 and the second sealing frame 42 are pressed against the connecting frame 2, and the connecting frame 2 is stuck in the groove of the sealing rubber strip 43. At the same time, the reinforcing ribs 44 on the first sealing frame 41 and the second sealing frame 42 are pressed against the ventilation pipe 1 to reduce the offset of the corresponding first sealing frame 41 and second sealing frame 42. When the first sealing frame 41 and the second sealing frame 42 are moved closer to each other, the limiting grooves 46 on the first sealing frame 41 and the second sealing frame 42 are aligned with the limiting strips 45 fixed on the ventilation pipe 1, allowing the limiting strips 45 to slide in the limiting grooves 46. When the two first sealing frame 41 and the second sealing frame 42 are joined together, the sealing rubber strips 43 on the first sealing frame 41 and the second sealing frame 42 are pressed against the connecting frame 2, thereby improving the sealing performance of the connecting frame 2 used for connecting the two ventilation pipes 1 and further reducing the possibility of air leakage between the two connecting frames 2.
[0041] Refer to Figure 2 、 Figure 3 and Figure 4 , the clamping mechanism 5 includes two symmetrically fixed first supporting blocks 51 on the first sealing frame 41, and two symmetric second supporting blocks 52 are fixed on the second sealing frame 42. A limiting component 53 is arranged between the first supporting block 51 and the second supporting block 52.
[0042] In addition, the limiting component 53 includes a limiting plate 531 fixed on the first supporting block 51. A limiting groove 46 corresponding to the limiting plate 531 is formed on the second supporting block 52. A limiting block 532 is arranged in the limiting groove 46. Limiting teeth are formed on both the limiting block 532 and the limiting plate 531, and they face in opposite directions.
[0043] Moreover, the limiting block 532 is slidably connected to the second supporting block 52. A limiting spring 533 is arranged between the limiting block 532 and the second supporting block 52. Both ends of the limiting spring 533 are fixedly connected to the limiting block 532 and the second supporting block 52.
[0044] When the first sealing frame 41 and the second sealing frame 42 approach and are combined on the connecting frame 2, the corresponding first support block 51 and the second support block 52 approach each other. Then, the limiting plate 531 on the first support block 51 is inserted into the limiting groove 46 on the second support block 52. Then, the limiting tooth inclined surface on the limiting plate 531 abuts against the limiting tooth inclined surface of the limiting block 532. At the same time, the limiting block 532 presses the limiting spring 533. When the first sealing frame 41 and the second sealing frame 42 are completely in contact with each other, the limiting spring 533 pushes the limiting block 532 to make the limiting block 532 lock the limiting plate 531, so that the first support block 51 and the second support block 52 can only approach each other. By inserting the limiting plate 531 on the first support block 51 into the limiting groove 46 on the second support block 52 and then using the limiting block 532 for fixation, when the first sealing frame 41 and the second sealing frame 42 are combined, they can be firmly fixed on the connecting frame 2.
[0045] Working principle: When installing the air duct in the clean room, make the connecting frames 2 between adjacent ventilation pipes 1 abut against each other, and then use the fixing bolts 3 to fix the two connecting frames 2 together. Then, combine the first sealing frame 41 and the second sealing frame 42 so that the connecting frame 2 enters the sealing groove. The sealing rubber strips 43 on the first sealing frame 41 and the second sealing frame 42 abut against the connecting frame 2, and the connecting frame 2 is stuck in the groove of the sealing rubber strip 43. At the same time, the reinforcing ribs 44 on the first sealing frame 41 and the second sealing frame 42 abut against the ventilation pipe 1. When the first sealing frame 41 and the second sealing frame 42 are approaching each other, make the limiting grooves 46 on the first sealing frame 41 and the second sealing frame 42 correspond to the limiting strips 45 fixed on the ventilation pipe 1, and make the limiting strips 45 slide in the limiting grooves 46. At the same time, the limiting plate 531 on the first support block 51 is inserted into the limiting groove 46 on the second support block 52. Then, the limiting tooth inclined surface on the limiting plate 531 abuts against the limiting tooth inclined surface of the limiting block 532. At the same time, the limiting block 532 presses the limiting spring 533. When the first sealing frame 41 and the second sealing frame 42 are completely in contact with each other, the limiting spring 533 pushes the limiting block 532 to make the limiting block 532 lock the limiting plate 531, so that the first support block 51 and the second support block 52 can only approach each other, and the first sealing frame 41 and the second sealing frame 42 are firmly buckled on the connecting frame 2 between the two ventilation pipes 1.
Claims
1. A sealing device for a clean room air duct, comprising two ventilation ducts (1), characterized in that: A connecting frame (2) is fixed on each of the two ventilation pipes (1), a fixing bolt (3) is fixedly connected between the two connecting frames (2), a sealing mechanism (4) is provided on the two connecting frames (2), and a clamping mechanism (5) is provided on the two connecting frames (2).
2. The sealing device for clean room air duct according to claim 1, characterized in that: The sealing mechanism (4) comprises a sealing frame 1 (41) arranged on two connecting frames (2), a sealing frame 2 (42) being arranged on the sealing frame 1 (41), a sealing groove being provided on the sealing frame 1 (41) and the sealing frame 2 (42), a sealing strip (43) being fixed on the sealing frame 1 (41) and the sealing frame 2 (42), the sealing strip (43) being located in the sealing groove, a groove being provided on the sealing strip (43) corresponding to the connecting frames (2), and a plurality of evenly distributed reinforcing ribs (44) being fixed on both sides of the sealing frame 1 (41) and the sealing frame 2 (42).
3. The sealing device for clean room air duct according to claim 2, characterized in that: Limiting strips (45) are fixed on both sides of the ventilation pipe (1), and limiting grooves (46) are provided on the sealing frame 1 (41) and the sealing frame 2 (42), wherein the limiting grooves (46) are open towards one end of the limiting strip (45).
4. The sealing device for clean room air duct according to claim 3, characterized in that: The opening end of the limiting groove (46) is provided with a trumpet-shaped opening.
5. The sealing device for clean room air duct according to claim 4, characterized in that: The edge of the groove of the sealing strip (43) is provided with an inclined surface, and the groove of the sealing strip (43) is open towards the edge of the connection frame (2).
6. The sealing device for clean room air duct according to claim 2, characterized in that: The clamping mechanism (5) comprises two support blocks (51) symmetrically fixed on the sealing frame (41), two support blocks (52) symmetrically fixed on the sealing frame (42), and a limit position assembly (53) is arranged between the support blocks (51) and the support blocks (52).
7. The sealing device for clean room air duct according to claim 6, characterized in that: The limiting assembly (53) comprises a limiting plate (531) fixed on the supporting block 1 (51); a limiting groove (46) corresponding to the limiting plate (531) is provided on the supporting block 2 (52); a limiting block (532) is arranged in the limiting groove (46); and limiting teeth are provided on both the limiting block (532) and the limiting plate (531) and face opposite directions.
8. The sealing device for clean room air duct according to claim 7, characterized in that: The limit block (532) is slidably connected to the second support block (52), a limit spring (533) is arranged between the limit block (532) and the second support block (52), and both ends of the limit spring (533) are fixedly connected to the limit block (532) and the second support block (52).