Combustible gas exhaust device capable of being opened and closed periodically and circularly

Abstract

The utility model belongs to the technical field of exhaust, and particularly relates to a combustible gas exhaust device capable of being opened and closed periodically and circularly, which comprises an air pipe, a cross beam is fixedly mounted in the air pipe, a fan is fixedly mounted on the surface of the cross beam, and a first sealing plate and a second sealing plate are rotatably connected to two sides in the air pipe respectively. A first sealing gasket is fixedly mounted on one side of the second sealing plate; the control module can play a role in timing circulation opening and closing, the fan exhausts air in the air pipe after being opened, the first sealing plate and the second sealing plate rotate towards the fan under the action of air pressure so that combustible gas in the indoor space and other spaces can be exhausted from the air pipe, and after the combustible gas is exhausted, the fan stops rotating, so that the combustible gas in the indoor space can be exhausted from the air pipe. And the torsional spring drives the first sealing plate and the second sealing plate to reset, so that the first sealing plate and the second sealing plate seal the air pipe, and therefore the situation that frequent starting and stopping occur due to the air return situation is avoided, and the influence on the service life and energy consumption of equipment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, specifically a combustible gas ventilation device that is timed to cycle and open / close. Background Technology

[0002] The timed cyclic start-stop combustible gas exhaust device is an intelligent safety device that integrates timed control and gas concentration monitoring. It automatically starts and stops the fan through a preset cycle, detects the combustible gas concentration in real time and starts and stops in conjunction with it. It also has functions such as gas leak alarm, energy-saving operation and vibration reduction and noise reduction. It is widely used in industrial pump rooms, laboratories, residences and other scenarios, effectively preventing the risk of gas leakage and improving environmental safety and energy utilization efficiency.

[0003] Currently, existing timed cyclic start-stop combustible gas exhaust devices are prone to backflow in confined or poorly ventilated spaces, resulting in incomplete exhaust of combustible gas. Especially in timed start-stop mode, backflow may cause the system to misjudge the environmental state. After exhaust stops, backflow causes a temporary decrease in gas concentration, but subsequent accumulation of backflow not only triggers unplanned start-ups of the timed cyclic start-stop combustible gas exhaust device, but frequent use of this device increases energy consumption. Furthermore, to offset the effects of backflow, the system may need to extend the exhaust time or increase power, leading to increased energy consumption. Therefore, a timed cyclic start-stop combustible gas exhaust device is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the existing timed cyclic opening and closing combustible gas exhaust device has the problem that the return air causes the timed cyclic opening and closing combustible gas exhaust device to start and stop frequently, and the extended exhaust time and increased power lead to increased energy consumption. This utility model proposes a timed cyclic opening and closing combustible gas exhaust device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a combustible gas exhaust device with timed cyclic opening and closing, including a duct, a crossbeam fixedly installed inside the duct, a fan fixedly installed on the surface of the crossbeam, a first sealing plate and a second sealing plate rotatably connected to both sides inside the duct, a first sealing gasket fixedly installed on one side of the second sealing plate, the surface of the first sealing gasket abutting against the surface of the second sealing plate, a plurality of vertical rods fixedly installed inside the duct, a torsion spring rotatably sleeved on the surface of the vertical rods, the torsion springs cooperating with the first sealing plate and the second sealing plate, a first bracket and a second bracket fixedly installed on both sides of the surface of the crossbeam, a support component provided at one end of the first bracket and the second bracket, the support component cooperating with the first sealing plate and the second sealing plate, a control module fixedly installed on the surface of the duct, a fixing frame fixedly installed on the inner wall of the duct, a support rod fixedly connected to the surface of the fixing frame, and a combustible gas sensor fixedly installed at one end of the support rod.

[0006] Preferably, a baffle is fixedly connected to the inner wall of the duct, and a sleeve is fixedly installed in the inner cavity of the baffle. The sleeve is used in conjunction with a fan.

[0007] Preferably, the top and bottom of the first and second sealing plates are fixedly connected to rotating rods, one end of which is fixedly connected to a positioning block, and the surface of the positioning block is slidably connected to the inner cavity of the air duct.

[0008] Preferably, a number of limiting blocks are fixedly installed on the surface of the vertical rod, and the limiting blocks are used in conjunction with the torsion spring.

[0009] Preferably, the support assembly includes an opening at one end of the first bracket and the second bracket, a connecting frame is rotatably connected inside the opening, a support plate is fixedly installed at one end of the connecting frame, and a rubber pad is fixedly installed on the surface of the support plate. The rubber pad is used in conjunction with the first sealing plate and the second sealing plate.

[0010] Preferably, a connecting rod is fixedly installed inside the opening, and the connecting frame is rotatably sleeved on the surface of the connecting rod.

[0011] Preferably, both the surface of the first bracket and the second bracket are fixedly connected with limit rods, one end of which is used in conjunction with the support plate.

[0012] Preferably, a second sealing gasket is fixedly installed on the surface of the fixing frame, and the surface of the second sealing gasket abuts against the surfaces of the first sealing plate and the second sealing plate.

[0013] The advantages of this utility model are:

[0014] 1. This utility model can play a timed cyclic opening and closing function through the control module. After opening, the fan rotates and exhausts the air in the duct. Under the action of air pressure, the first sealing plate and the second sealing plate rotate in the direction of the fan so that the combustible gas in the room or other spaces can be discharged from the duct. After the combustible gas is discharged, the fan stops rotating, and the torsion spring drives the first sealing plate and the second sealing plate to reset so that the first sealing plate and the second sealing plate can close the duct. This avoids the situation of back air and frequent start and stop, so as to avoid affecting the service life and energy consumption of the equipment.

[0015] 2. By setting up a support component, after the first and second sealing plates are opened, the first and second brackets support the first and second sealing plates through the support component. The length of the second bracket is greater than that of the first bracket, so that the first and second sealing plates are staggered, so as to avoid misalignment and gaps when the first and second sealing plates are reset. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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.

[0017] Figure 1 This is a schematic diagram of the combustible gas exhaust device with timed cyclic opening and closing according to the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the vertical rod structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the beam structure of this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified structural diagram of part A.

[0022] In the diagram: 1. Air duct; 101. Crossbeam; 102. Fan; 103. Baffle; 104. Sleeve; 2. First sealing plate; 3. Second sealing plate; 31. First sealing gasket; 4. Rotating rod; 41. Positioning block; 5. Vertical rod; 51. Torsion spring; 52. Limiting block; 6. First bracket; 7. Second bracket; 8. Support assembly; 81. Opening; 82. Connecting frame; 83. Connecting rod; 84. Support plate; 85. Rubber pad; 86. Limiting rod; 9. Fixing frame; 91. Second sealing gasket; 10. Control module; 11. Support rod; 12. Combustible gas sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] This application discloses a combustible gas exhaust device with timed cyclic opening and closing. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A combustible gas exhaust device with timed cyclic opening and closing includes a duct 1, a crossbeam 101 fixedly installed inside the duct 1, a fan 102 fixedly installed on the surface of the crossbeam 101, a first sealing plate 2 and a second sealing plate 3 rotatably connected to both sides inside the duct 1, a first sealing gasket 31 fixedly installed on one side of the second sealing plate 3, the surface of the first sealing gasket 31 abutting against the surface of the second sealing plate 3, a plurality of vertical rods 5 fixedly installed inside the duct 1, a torsion spring 51 rotatably sleeved on the surface of the vertical rods 5, the torsion spring 51 cooperating with the first sealing plate 2 and the second sealing plate 3, and a fan 102 fixedly installed on both sides of the surface of the crossbeam 101. There are a first bracket 6 and a second bracket 7. Each of the first bracket 6 and the second bracket 7 is provided with a support component 8 at one end. The support component 8 is used in conjunction with the first sealing plate 2 and the second sealing plate 3. A control module 10 is fixedly installed on the surface of the air duct 1. A fixing frame 9 is fixedly installed on the inner wall of the air duct 1. A support rod 11 is fixedly connected to the surface of the fixing frame 9. A combustible gas sensor 12 is fixedly installed at one end of the support rod 11. The control module 10 also includes a timer, a control module, a gas leak alarm, etc., which are existing technologies and will not be described in detail here. In addition, the length of the second bracket 7 is greater than the length of the first bracket 6.

[0026] When the control module 10 turns on the fan 102, the fan 102 exhausts the air in the duct 1. Under the action of air pressure, the first sealing plate 2 and the second sealing plate 3 rotate toward the fan 102. They are supported and limited by the first bracket 6, the second bracket 7, and the support assembly 8 to prevent the first sealing plate 2 and the second sealing plate 3 from contacting the crossbeam 101. At the same time, the first sealing plate 2 and the second sealing plate 3 open alternately. By controlling the opening and closing degree of the first sealing plate 2 and the second sealing plate 3, the air inlet of the duct 1 is smaller than the air outlet to improve the exhaust efficiency. After the exhaust is completed, the fan 102 stops, and the torsion spring 51 drives the first sealing plate 2 and the second sealing plate 3 to reset and close the duct 1. Since the length of the second bracket 7 is greater than that of the first bracket 6, the second sealing plate 3 resets before the first sealing plate 2 to avoid misalignment of the first sealing plate 2 and the second sealing plate 3, which would affect the sealing effect and thus effectively prevent backflow.

[0027] Reference Figure 2 A baffle 103 is fixedly connected to the inner wall of the air duct 1, and a sleeve 104 is fixedly installed in the inner cavity of the baffle 103. The sleeve 104 is used in conjunction with the fan 102. By setting the baffle 103 and the sleeve 104, it is possible to prevent outside air from entering the air duct 1 when the fan 102 is rotating, which would make it difficult to open the first sealing plate 2 and the second sealing plate 3.

[0028] Reference Figure 2 The top and bottom of the first sealing plate 2 and the second sealing plate 3 are both fixedly connected to a rotating rod 4. One end of the rotating rod 4 is fixedly connected to a positioning block 41. The surface of the positioning block 41 is slidably connected to the inner cavity of the air duct 1. The positioning block 41 stabilizes the position of the rotating rod 4 and prevents the rotating rod 4 from shifting, so that the rotating rod 4 can stabilize the position of the first sealing plate 2 and the second sealing plate 3, prevent the first sealing plate 2 and the second sealing plate 3 from shifting, and allow the first sealing plate 2 and the second sealing plate 3 to rotate inside the air duct 1.

[0029] Reference Figure 2 and Figure 3 Several limiting blocks 52 are fixedly installed on the surface of the vertical rod 5. The limiting blocks 52 are used in conjunction with the torsion spring 51. The limiting blocks 52 can effectively stabilize the position of the torsion spring 51 to avoid displacement of the torsion spring 51, thereby avoiding affecting the supporting effect of the torsion spring 51 on the first sealing plate 2 and the second sealing plate 3.

[0030] Reference Figure 3 , Figure 4 and Figure 5The support assembly 8 includes an opening 81 at one end of the first bracket 6 and the second bracket 7. A connecting frame 82 is rotatably connected inside the opening 81. A support plate 84 is fixedly installed at one end of the connecting frame 82. A rubber pad 85 is fixedly installed on the surface of the support plate 84. The rubber pad 85 is used in conjunction with the first sealing plate 2 and the second sealing plate 3. After the first sealing plate 2 and the second sealing plate 3 are opened, the first sealing plate 2 and the second sealing plate 3 respectively adhere to the rubber pad 85, avoiding rigid contact between the first sealing plate 2, the second sealing plate 3 and the support plate 84. The support plate 84 is rotatably connected inside the opening 81 through the connecting frame 82, so that the support plate 84 can adapt to the angle of the first sealing plate 2 and the second sealing plate 3 to ensure the support effect of the first sealing plate 2 and the second sealing plate 3.

[0031] Reference Figure 4 and Figure 5 A connecting rod 83 is fixedly installed inside the opening 81, and a connecting frame 82 is rotatably sleeved on the surface of the connecting rod 83. By rotating the connecting frame 82 onto the surface of the connecting rod 83, the position of the connecting frame 82 inside the opening 81 is effectively stabilized, preventing the connecting frame 82 from separating from the opening 81 and affecting the supporting function of the support plate 84.

[0032] Reference Figure 4 and Figure 5 Limiting rods 86 are fixedly connected to the surfaces of the first bracket 6 and the second bracket 7. One end of the limiting rod 86 is used in conjunction with the support plate 84. The limiting block 52 can support the support plate 84, preventing the support plate 84 from flipping to the other side of the first bracket 6 and the second bracket 7, thereby preventing the support plate 84 from being misaligned and affecting the support distance between the first bracket 6 and the second bracket 7.

[0033] Reference Figure 3 A second sealing gasket 91 is fixedly installed on the surface of the fixing frame 9. The surface of the second sealing gasket 91 abuts against the surfaces of the first sealing plate 2 and the second sealing plate 3. The second sealing gasket 91 can seal the contact position between the fixing frame 9 and the first sealing plate 2 and the second sealing plate 3, and prevent air leakage at the docking position between the first sealing plate 2, the second sealing plate 3 and the fixing frame 9.

[0034] Working principle: When the control module 10 turns on the fan 102, the fan 102 exhausts the air in the duct 1, and the baffle 103 and sleeve 104 prevent outside air from entering the duct 1. Under the action of air pressure, the positioning block 41 stabilizes the position of the rotating rod 4, causing the first sealing plate 2 and the second sealing plate 3 to rotate towards the fan 102 via the rotating rod 4, and causing the first sealing plate 2 and the second sealing plate 3 to abut against the rubber pad 85. The limiting rod 86 prevents the support plate 84 from shifting position, so that the first bracket 6 and the second bracket 7 support the position of the support plate 84 through the opening 81, the connecting rod 83 and the connecting frame 82. The support plate 84 supports and limits the first sealing plate 2 and the second sealing plate 3 through the rubber pad 85, preventing the first sealing plate 2 and the second sealing plate 3 from contacting the crossbeam 101. At the same time, the first sealing plate 2 and the second sealing plate 3 open alternately. By controlling the first sealing plate 2 and the second sealing plate 3 to open alternately, the position of the first sealing plate 2 and the second sealing plate 3 can be adjusted. The opening and closing degree of the first sealing plate 2 and the second sealing plate 3 is adjusted so that the air inlet of the duct 1 is smaller than the air outlet to improve the exhaust efficiency. After exhaust is completed, when the combustible gas sensor 12 can no longer detect combustible gas, the fan 102 is stopped by the control module 10. The position of the torsion spring 51 on the surface of the vertical rod 5 is stabilized by the limit block 52 so that the torsion spring 51 drives the first sealing plate 2 and the second sealing plate 3 to reset and seal the duct 1. The length of the second bracket 7 is greater than that of the first bracket 6 so that the second sealing plate 3 resets before the first sealing plate 2 and the first sealing gasket 31 seals the contact position between the first sealing plate 2 and the second sealing plate 3 to avoid misalignment of the first sealing plate 2 and the second sealing plate 3, which would affect the sealing effect. The second sealing gasket 91 seals the contact position between the fixing frame 9 and the first sealing plate 2 and the second sealing plate 3 to ensure the sealing effect of the duct 1 and effectively prevent backflow.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A combustible gas exhaust device with timed cyclic opening and closing, characterized in that: The system includes a duct (1), inside which a crossbeam (101) is fixedly installed. A fan (102) is fixedly installed on the surface of the crossbeam (101). A first sealing plate (2) and a second sealing plate (3) are rotatably connected to both sides inside the duct (1). A first sealing gasket (31) is fixedly installed on one side of the second sealing plate (3). The surface of the first sealing gasket (31) abuts against the surface of the second sealing plate (3). Several vertical rods (5) are fixedly installed inside the duct (1). A torsion spring (51) is rotatably sleeved on the surface of the vertical rods (5). The torsion spring (51) is connected to the first sealing plate (2). The second sealing plate (3) is used in conjunction with the first bracket (6) and the second bracket (7) fixedly installed on both sides of the surface of the crossbeam (101). The first bracket (6) and the second bracket (7) are each provided with a support component (8) at one end. The support component (8) is used in conjunction with the first sealing plate (2) and the second sealing plate (3). The surface of the air duct (1) is fixedly installed with a control module (10). The inner wall of the air duct (1) is fixedly installed with a fixing frame (9). The surface of the fixing frame (9) is fixedly connected with a support rod (11). One end of the support rod (11) is fixedly installed with a combustible gas sensor (12).

2. The combustible gas exhaust device with timed cyclic opening and closing according to claim 1, characterized in that: The inner wall of the air duct (1) is fixedly connected to a baffle (103), and a sleeve (104) is fixedly installed in the inner cavity of the baffle (103). The sleeve (104) is used in conjunction with the fan (102).

3. A combustible gas exhaust device with timed cyclic opening and closing as described in claim 1, characterized in that: The top and bottom of the first sealing plate (2) and the second sealing plate (3) are fixedly connected with rotating rods (4), and one end of the rotating rod (4) is fixedly connected with a positioning block (41). The surface of the positioning block (41) is slidably connected to the inner cavity of the air duct (1).

4. A combustible gas exhaust device with timed cyclic opening and closing as described in claim 1, characterized in that: Several limiting blocks (52) are fixedly installed on the surface of the vertical rod (5), and the limiting blocks (52) are used in conjunction with the torsion spring (51).

5. A combustible gas exhaust device with timed cyclic opening and closing as described in claim 1, characterized in that: The support assembly (8) includes an opening (81) at one end of the first bracket (6) and the second bracket (7). A connecting frame (82) is rotatably connected inside the opening (81). A support plate (84) is fixedly installed at one end of the connecting frame (82). A rubber pad (85) is fixedly installed on the surface of the support plate (84). The rubber pad (85) is used in conjunction with the first sealing plate (2) and the second sealing plate (3).

6. A combustible gas exhaust device with timed cyclic opening and closing as described in claim 5, characterized in that: A connecting rod (83) is fixedly installed inside the opening (81), and the connecting frame (82) is rotatably sleeved on the surface of the connecting rod (83).

7. A combustible gas exhaust device with timed cyclic opening and closing according to claim 5, characterized in that: The surfaces of the first bracket (6) and the second bracket (7) are fixedly connected with limit rods (86), and one end of the limit rods (86) is used in conjunction with the support plate (84).

8. A combustible gas exhaust device with timed cyclic opening and closing as described in claim 1, characterized in that: The surface of the fixing frame (9) is fixedly installed with a second sealing gasket (91), and the surface of the second sealing gasket (91) abuts against the surfaces of the first sealing plate (2) and the second sealing plate (3).

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