Sealing device for clean room air pipe

Abstract

The utility model discloses a sealing device for an air pipe of a clean room, which belongs to the technical field of air pipes and comprises a first air pipe and a second air pipe, a connecting plate is fixedly connected between the first air pipe and the second air pipe, a groove is arranged inside the connecting plate, and a sealing component is arranged inside the connecting plate. The air in the air bag enters the air hole from the through hole by pressing the lower pressing plate, at the moment, the sealing rubber strip starts to gradually expand under the action of air pressure, the groove is filled with the sealing rubber strip, seamless connection is achieved, the sealing effect between the first air pipe and the second air pipe is enhanced, and therefore the sealing effect between the first air pipe and the second air pipe is improved. The air pipe sealing device not only can achieve a good sealing effect, but also is suitable for connection of air pipes with various calibers, so that the cost input of the sealing structure is reduced, and the usability and the practicability of the air pipe sealing device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to a sealing device for air ducts in clean rooms. Background Art

[0002] The patent with the published authorization announcement number CN212868863U discloses a sealing device for clean room air ducts, including a first rectangular flange, connecting bolts, brominated butyl rubber strips, compression springs, telescopic frames, first sealing rubber sheets, sealing rubber lining sheets, extruded convex strips and gaskets. The first rectangular flange is welded on the left end face of the first air duct, connecting bolts are symmetrically inserted on the upper and lower sides of the first rectangular flange, a gasket is mounted on the right side of the annular side of the connecting bolt, an extruded convex strip is welded on the left end face of the first rectangular flange, a telescopic frame is clamped on the right end face of the compression spring, and a first sealing rubber sheet is bonded to the right end face of the telescopic frame. The patent solves the problem of poor sealing at the original air duct connection and easy dust entry leading to pollution. It has a reasonable structure, good sealing, easy disassembly and assembly, simple construction and strong practicality.

[0003] However, the sealing device for clean room air ducts in the above patent has low applicability. Since the air ducts have different calibers, when two air ducts are connected, the patent cannot adjust the sealing range of the sealing structure according to the caliber of the air duct. Therefore, it is necessary to increase the cost investment, thereby reducing the practicality and use effect of the air duct sealing device.

[0004] To this end, the present application proposes a sealing device for a clean room air duct. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a sealing device for clean room air ducts, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology; by pressing the lower pressure plate, the gas in the airbag enters into the air hole from the through hole, and at this time, the sealing strip begins to gradually expand under the action of the air pressure, so that the sealing strip fills the groove to achieve a seamless connection, thereby strengthening the sealing effect between the first air duct and the second air duct. As a result, not only a good sealing effect can be achieved, but also it is suitable for connecting air ducts of various calibers, thereby reducing the cost investment of the sealing structure and improving the usability and practicality of the air duct sealing device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing device for a clean room air duct, comprising a first air duct and a second air duct, wherein a connecting plate is fixedly connected between the first air duct and the second air duct, a groove is provided inside the connecting plate, a sealing assembly is arranged inside the connecting plate, the sealing assembly comprises a sealing plate, the sealing plate is arranged inside the connecting plate, and a sealing strip is arranged outside the sealing plate and inside the groove.

[0007] As a preferred technical solution of the utility model, an inflatable component is arranged on the top of the connecting plate, and the inflatable component includes a foldable shell, and the foldable shell is fixedly connected to the top of the connecting plate, and an air bag is arranged inside the foldable shell, and an air hole is opened inside the sealing strip, and a through hole is opened inside the connecting plate, and the top end of the through hole is connected to the air bag, and the bottom end is connected to the air hole;

[0008] The gas in the airbag enters the air hole from the through hole. At this time, the sealing strip begins to gradually expand under the action of the air pressure, so that the sealing strip fills the groove to achieve a seamless connection, thereby strengthening the sealing effect between the first air duct and the second air duct, thereby achieving a good sealing effect.

[0009] As a preferred technical solution of the utility model, the top of the foldable housing is fixedly connected with a pressing assembly, and the pressing assembly includes a pressing plate, and the pressing plate is fixedly connected to the top of the foldable housing. Two threaded holes are provided inside the connecting plate, and the inner thread of the pressing plate is connected with two threaded rods, and the bottom ends of the two threaded rods extend into the threaded holes.

[0010] By setting the lower pressure plate, threaded rod and threaded hole, the lower pressure plate can control the air intake of the airbag. Then, the lower pressure plate is positioned through the cooperation of the threaded rod and the threaded hole, so that the internal gas of the air hole is in a stable state.

[0011] As a preferred technical solution of the utility model, a protective component is detachably connected to the top of the connecting plate and located outside the lower pressing plate, and the protective component includes a protective shell, which is detachably connected to the top of the connecting plate, and the outside of the protective shell is fixedly connected to two mounting blocks;

[0012] By setting up the protective shell, the airbag and the lower pressure plate are protected to prevent accidental contact or accidental touch which may cause gas instability, thereby enhancing the use effect.

[0013] As a preferred technical solution of the utility model, the two mounting blocks are provided with connecting components inside, and the connecting components include limiting rods, the two limiting rods are fixedly connected inside the mounting blocks, the two limiting rods are provided with springs 1 outside, and both ends of the two springs 1 and located outside the limiting rods are fixedly connected with limiting hooks, and two limiting grooves are provided inside the connecting plate, and the bottom end of each limiting hook extends into the limiting groove;

[0014] By moving the two limit hooks in similar directions, the limit hooks can be disengaged from the limit grooves. Subsequently, the protective shell can be removed and the height of the lower pressure plate can be checked to avoid insufficient gas in the sealing strip due to long-term use, which affects the sealing effect. This makes it easier to disassemble, install and inspect later.

[0015] As a preferred technical solution of the utility model, the inside of the two mounting blocks are slidably connected with a pressing assembly, the pressing assembly includes a pressing block, the two pressing blocks are slidably connected inside the mounting block, a spring 2 is arranged inside the two pressing blocks and located on the top of the mounting block, and the bottom of the two pressing blocks is rotatably connected with a plurality of pulleys, and the outside of each pulley is in contact with the outside of the top of the limit hook;

[0016] By pressing the pressing block downward, the pulley will slide outside the limit hook, so that the limit hook can be opened or closed, and then the protective shell can be connected or disassembled.

[0017] The beneficial effects of the utility model are as follows: by pressing the lower pressure plate, the gas in the airbag enters into the air hole from the through hole. At this time, the sealing strip begins to gradually expand under the action of the air pressure, so that the sealing strip fills the groove, achieving a seamless connection, thereby strengthening the sealing effect between the first air duct and the second air duct. As a result, not only a good sealing effect can be achieved, but also it is suitable for connecting air ducts of various calibers, thereby reducing the cost investment of the sealing structure and improving the usability and practicality of the air duct sealing device.

[0018] The utility model presses down the pressing block, and the pulley will slide outside the limit hook, so that the two limit hooks move in similar directions. At this time, the limit hook can be disengaged from the limit groove. Then, the protective shell can be removed and the height of the lower pressure plate can be checked to avoid insufficient gas in the sealing strip during long-term use, which affects the sealing effect. Therefore, it is easy to disassemble, install and check later. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main body of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal side of the utility model;

[0021] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0022] In the figure: 1. first air duct; 2. second air duct; 3. connecting plate; 4. groove; 5. sealing assembly; 51. sealing plate; 52. sealing strip; 6. inflatable assembly; 61. foldable shell; 62. air bag; 63. through hole; 64. air hole; 7. pressing assembly; 71. pressing plate; 72. threaded rod; 73. threaded hole; 8. protective assembly; 81. protective shell; 82. mounting block; 9. connecting assembly; 91. limiting rod; 92. spring one; 93. limiting hook; 94. limiting groove; 10. pressing assembly; 101. pressing block; 102. spring two; 103. pulley. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1 - Figure 3 A sealing device for a clean room air duct includes a first air duct 1 and a second air duct 2. A connecting plate 3 is fixedly connected between the first air duct 1 and the second air duct 2. A groove 4 is formed inside the connecting plate 3.

[0026] A sealing assembly 5 is provided inside the connecting plate 3, and the sealing assembly 5 includes a sealing plate 51, which is provided inside the connecting plate 3, and a sealing strip 52 is provided outside the sealing plate 51 and inside the groove 4; by providing the sealing plate 51 and the sealing strip 52, the sealing plate 51 can achieve a preliminary seal between the first air duct 1 and the second air duct 2, and the sealing strip 52 can strengthen the seal between the first air duct 1 and the second air duct 2, thereby achieving a better sealing effect.

[0027] An inflatable component 6 is provided on the top of the connecting plate 3. The inflatable component 6 includes a foldable shell 61. The foldable shell 61 is fixedly connected to the top of the connecting plate 3. An air bag 62 is provided inside the foldable shell 61. An air hole 64 is opened inside the sealing strip 52. A through hole 63 is opened inside the connecting plate 3. The top end of the through hole 63 is connected to the air bag 62, and the bottom end is connected to the air hole 64. The gas in the air bag 62 enters the air hole 64 from the through hole 63. At this time, the sealing strip 52 begins to expand gradually under the action of air pressure, so that the sealing strip 52 fills the groove 4 to achieve a seamless connection, thereby strengthening the sealing effect between the first air duct 1 and the second air duct 2, thereby achieving a good sealing effect.

[0028] The top of the foldable shell 61 is fixedly connected with a pressing assembly 7, and the pressing assembly 7 includes a pressing plate 71, which is fixedly connected to the top of the foldable shell 61. Two threaded holes 73 are opened inside the connecting plate 3. The internal threads of the pressing plate 71 are connected to two threaded rods 72, and the bottom ends of the two threaded rods 72 extend to the inside of the threaded holes 73. By setting the pressing plate 71, the threaded rod 72 and the threaded hole 73, the pressing plate 71 can control the air intake of the airbag 62. Subsequently, the positioning of the pressing plate 71 is achieved through the cooperation of the threaded rod 72 and the threaded hole 73, so that the internal gas of the air hole 64 is in a stable state.

[0029] A protective component 8 is detachably connected to the top of the connecting plate 3 and located outside the lower pressure plate 71. The protective component 8 includes a protective shell 81. The protective shell 81 is detachably connected to the top of the connecting plate 3. Two mounting blocks 82 are fixedly connected to the outside of the protective shell 81. Through the provision of the protective shell 81, the airbag 62 and the lower pressure plate 71 are protected to prevent accidental contact or accidental touching that may cause gas instability, thereby enhancing the use effect.

[0030] A connecting component 9 is provided inside the two mounting blocks 82, and the connecting component 9 includes a limit rod 91. The two limit rods 91 are fixedly connected to the inside of the mounting blocks 82, and a spring 92 is provided outside the two limit rods 91. The two ends of the two springs 92 and the outside of the limit rods 91 are fixedly connected with limit hooks 93. Two limit grooves 94 are provided inside the connecting plate 3, and the bottom end of each limit hook 93 extends to the inside of the limit groove 94; the two limit hooks 93 move in a similar direction. At this time, the limit hook 93 can be disengaged from the limit groove 94, and then the protective shell 81 can be removed, and the height of the lower pressure plate 71 can be checked to avoid insufficient gas in the sealing strip 52 during long-term use, which affects the sealing effect, thereby facilitating disassembly, installation, and subsequent inspection.

[0031] The inside of the two mounting blocks 82 are both slidably connected with a pressing assembly 10, and the pressing assembly 10 includes a pressing block 101. The two pressing blocks 101 are both slidably connected inside the mounting block 82, and a spring 102 is provided inside the two pressing blocks 101 and at the top of the mounting block 82. The bottom of the two pressing blocks 101 is rotatably connected with a plurality of pulleys 103, and the outside of each pulley 103 is in contact with the outside of the top of the limiting hook 93; by pressing down the pressing block 101, the pulley 103 will slide outside the limiting hook 93, so that the limiting hook 93 can be opened or closed, thereby realizing the connection or disassembly of the protective shell 81.

[0032] Working principle: When in use, by pressing the lower pressure plate 71, the gas in the airbag 62 enters into the air hole 64 from the through hole 63. At this time, the sealing strip 52 begins to expand gradually under the action of the air pressure, so that the sealing strip 52 fills the groove 4 to achieve a seamless connection, thereby strengthening the sealing effect between the first air duct 1 and the second air duct 2. As a result, not only a good sealing effect can be achieved, but also it is suitable for connecting air ducts of various calibers, thereby reducing the cost investment of the sealing structure and improving the usability and practicality of the air duct sealing device.

[0033] By pressing the pressing block 101 downward, the pulley 103 will slide outside the limit hook 93, so that the two limit hooks 93 move in similar directions. At this time, the limit hook 93 can be disengaged from the limit groove 94. Then, the protective shell 81 can be removed and the height of the lower pressure plate 71 can be checked to avoid insufficient gas in the sealing strip 52 due to long-term use, which affects the sealing effect. This facilitates disassembly, installation, and subsequent inspection.

[0034] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sealing device for a clean room air duct, comprising a first air duct (1) and a second air duct (2), characterized in that: A connecting plate (3) is fixedly connected between the first air duct (1) and the second air duct (2); a groove (4) is provided inside the connecting plate (3); a sealing assembly (5) is provided inside the connecting plate (3); the sealing assembly (5) comprises a sealing plate (51); the sealing plate (51) is provided inside the connecting plate (3); and a sealing strip (52) is provided outside the sealing plate (51) and inside the groove (4).

2. A sealing device for a clean room air duct according to claim 1, characterized in that: An inflatable component (6) is arranged on the top of the connecting plate (3), and the inflatable component (6) comprises a foldable shell (61), the foldable shell (61) is fixedly connected to the top of the connecting plate (3), an air bag (62) is arranged inside the foldable shell (61), an air hole (64) is opened inside the sealing strip (52), and a through hole (63) is opened inside the connecting plate (3), and the top end of the through hole (63) is connected to the air bag (62), and the bottom end is connected to the air hole (64).

3. A sealing device for a clean room air duct according to claim 2, characterized in that: The top of the foldable shell (61) is fixedly connected to a pressing assembly (7), and the pressing assembly (7) includes a pressing plate (71), and the pressing plate (71) is fixedly connected to the top of the foldable shell (61). Two threaded holes (73) are provided inside the connecting plate (3), and the inner thread of the pressing plate (71) is connected to two threaded rods (72), and the bottom ends of the two threaded rods (72) extend into the threaded holes (73).

4. A sealing device for a clean room air duct according to claim 3, characterized in that: A protective component (8) is detachably connected to the top of the connecting plate (3) and located outside the lower pressure plate (71). The protective component (8) comprises a protective shell (81). The protective shell (81) is detachably connected to the top of the connecting plate (3). Two mounting blocks (82) are fixedly connected to the outside of the protective shell (81).

5. A sealing device for a clean room air duct according to claim 4, characterized in that: A connecting assembly (9) is provided inside the two mounting blocks (82), and the connecting assembly (9) includes a limiting rod (91). The two limiting rods (91) are fixedly connected inside the mounting blocks (82), and a spring (92) is provided outside the two limiting rods (91). Both ends of the two springs (92) and located outside the limiting rods (91) are fixedly connected to limiting hooks (93), and two limiting grooves (94) are provided inside the connecting plate (3), and the bottom end of each limiting hook (93) extends into the limiting groove (94).

6. A sealing device for a clean room air duct according to claim 5, characterized in that: The interior of the two mounting blocks (82) is slidably connected with a pressing assembly (10), and the pressing assembly (10) includes a pressing block (101). The two pressing blocks (101) are slidably connected inside the mounting block (82), and a spring 2 (102) is provided inside the two pressing blocks (101) and at the top of the mounting block (82). The bottom of the two pressing blocks (101) is rotatably connected with a plurality of pulleys (103), and the outside of each pulley (103) is in contact with the outside of the top of the limiting hook (93).

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