Ventilation and explosion venting device for closed space

Abstract

The invention relates to a ventilation and explosion venting device for a closed space, and relates to the field of ventilation devices. The device comprises a frame used for being installed on a closed space shell, an opening is formed in the frame, a cover plate is hinged to the frame, and a control assembly used for controlling opening and closing of the cover plate is arranged on the frame so as to control opening and closing of the opening; a limiting seat is fixedly connected to the cover plate, a clamping seat used for being in clamping fit with the limiting seat is arranged on the frame in a sliding mode, and the control assembly drives the clamping seat to move through a linkage unit. In the state that the cover plate is closed and seals the opening, the control assembly and the linkage unit are matched to drive the clamping base to move so as to drive the clamping base to be matched with the limiting base, and then the locking effect on the cover plate is achieved. Therefore, the sealing effect and the stability of the cover plate in the closed state are improved.

Description

Technical Field

[0001] The present application relates to the field of ventilation devices, and in particular to a ventilation and explosion relief device for a closed space. Background Art

[0002] In the field of industrial production and storage, especially in closed working environments involving the release of flammable, explosive or harmful gases, it is crucial to ensure safe pressure relief and effective ventilation. The safety protection needs of such places are urgent, so the installation of ventilation windows has become a key measure to achieve ventilation and pressure relief functions. Ventilation windows can not only effectively promote air circulation in closed spaces and dilute the concentration of combustible materials in a timely manner, but also effectively prevent the risk of explosion caused by gas accumulation, thereby greatly improving the overall safety of the site.

[0003] In order to meet the needs of higher standards of automation, modern ventilation and explosion relief devices generally use electric or pneumatic actuators to accurately control the opening and closing of the flaps. However, it is worth noting that when the flaps of traditional ventilation and explosion relief devices are closed, they often face the risk of accidental opening due to external factors such as external wind pressure fluctuations and mechanical vibrations. This not only damages the sealing performance of the enclosed space, but also poses a potential threat to the safety of the site. Summary of the invention

[0004] In order to improve the sealing effect and stability when the cover is in a closed state, the present application provides a ventilation and explosion relief device for a closed space.

[0005] The present application provides a closed space ventilation and explosion relief device that adopts the following technical solution: A ventilation and explosion relief device for a closed space, comprising a frame for installation on a closed space shell, an opening being arranged in the frame, a cover plate being hingedly connected to the frame, a control assembly for controlling the opening and closing of the cover plate being arranged on the frame, and further controlling the opening and closing of the opening; a limit seat being fixedly connected to the cover plate, a clamping seat for clamping and cooperating with the limit seat being slidably arranged on the frame, and the control assembly driving the clamping seat to move through a linkage unit; When the cover is closed and seals the opening, the control assembly and the linkage unit cooperate to drive the clamping seat to move, so as to drive the clamping seat and the limiting seat to cooperate with each other, thereby achieving a locking effect on the cover.

[0006] By adopting the above technical solution, the control component controls the opening and closing of the cover. In order to ensure that the cover is in a closed state, the control component and the linkage unit cooperate to drive the clamping seat to move, so that the clamping seat and the limit seat are clamped with each other, so as to limit the accidental opening of the cover, thereby improving the sealing effect and stability of the cover in a closed state.

[0007] Optionally, the control component includes a slide seat slidably arranged on the frame and a driving unit arranged on the frame, the driving unit is used to control the movement of the slide seat, a linkage rod is arranged between the slide seat and the cover plate, one end of the linkage rod is hinged to one of the slide seat or the cover plate, and the other end of the linkage rod is movably arranged on the other component through the linkage unit.

[0008] By adopting the above technical solution, the driving unit drives the slide to move, and the cover plate is driven to flip through the linkage rotation of the linkage rod, thereby realizing automatic control of the opening and closing action of the cover plate.

[0009] Optionally, the linkage unit includes a connecting seat, the connecting seat is fixedly connected to one of the components of the slide seat or the cover plate, a slide is provided on the connecting seat, one end of the slide is marked as a flip point, a rotating shaft for being inserted into the slide is fixedly connected to the linkage rod, the connecting seat is provided with an arc groove at one end of the slide close to the flip point, the arc groove is connected to the slide, a limiting shaft is fixedly connected to the linkage rod, and the limiting shaft is slidably provided in the slide or the arc groove; When the rotating shaft is located at the flipping point, the central axis of the arc-shaped groove is collinear with the central axis of the rotating shaft, and the limiting shaft can enter the arc-shaped groove and slide in the limiting shaft; When the cover is in a closed state, the rotating shaft and the limiting shaft are both located in the slideway; when the cover is in an open state, the rotating shaft is located at the flipping point, and the limiting shaft can slide into the arc groove.

[0010] By adopting the above technical solution, when the cover is open, the rotating shaft is located at the flipping point, and the limit shaft is located in the arc groove. The driving unit moves to drive the linkage rod to flip. During the flipping process of the cover, the rotating shaft is always located at the flipping point, and the limit shaft is located in the arc groove.

[0011] The driving unit drives the slide to move and indirectly drives the cover to gradually close. During this process, the limit shaft moves in the arc groove toward the slide. When the cover is closed, the limit shaft is separated from the arc groove and located in the slide. The limit shaft releases the limiting effect on the rotating shaft. The driving unit continues to push the slide to move, so that the limit shaft and the rotating shaft slide linearly in the slide, thereby limiting the flipping of the connecting seat relative to the linkage rod, thereby further limiting the flipping of the cover, which is conducive to improving the stability of the cover in the closed state.

[0012] Optionally, the width of the arc-shaped groove is less than or equal to the width of the slideway.

[0013] By adopting the above technical solution, the width of the arc groove is less than or equal to the width of the slideway, which facilitates the sliding movement of the limit shaft between the arc groove and the slideway.

[0014] Optionally, the clamping seat is fixedly connected to the linkage rod or the sliding seat.

[0015] By adopting the above technical solution, the clamping seat is fixedly connected to the linkage rod or the sliding seat, thereby realizing the linkage control of the opening and closing actions of the lock and the cover.

[0016] When the cover plate flips toward the frame until it is just closed, the limit shaft disengages from the arc groove and is located in the slideway, and the limit shaft releases the limiting effect on the rotating shaft. The driving unit continues to push the slide seat to move, so that the clamping seat moves toward the limit seat, so that the clamping seat and the limit seat are mutually clamped, thereby limiting the flipping of the cover plate, which is beneficial to improving the stability of the cover plate in the closed state.

[0017] Optionally, a limiting rod is provided on the limiting seat, the clamping seat is provided with a limiting groove for clamping the limiting rod, and a guiding inclined surface is provided on the clamping seat, and the guiding inclined surface is used to guide the limiting rod so that the limiting rod can be introduced into the limiting groove.

[0018] By adopting the above technical solution, the setting of the guiding inclined surface enables the limiting rod to smoothly enter the limiting groove, which can alleviate the possibility of locking failure caused by improper operation.

[0019] Optionally, a sleeve is rotatably sleeved on the limiting rod, and the sleeve is used to abut against the limiting groove of the clamping seat.

[0020] By adopting the above technical solution, the sleeve is rotatably connected to the limit rod, and the rolling friction between the sleeve and the limit groove wall replaces the slide friction, which is helpful to alleviate the mutual wear between the limit rod and the limit groove wall and the guide inclined surface.

[0021] Optionally, a mounting opening is provided through the cover plate, and an explosion relief plate is fixedly connected to the cover plate in the mounting opening.

[0022] By adopting the above technical solution, a cover plate is hinged on the frame, and the opening and closing of the cover plate can realize effective ventilation of the enclosed space. When the cover plate is difficult to open in time, once an explosion occurs, the air pressure expands rapidly, and the explosion relief plate on the cover plate can quickly rupture under overpressure to release the internal pressure, thereby alleviating the problem of damage to the outer wall or shell of the enclosed workspace and its internal equipment.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The driving unit drives the slide to move and indirectly drives the cover to close gradually. During this process, the limit shaft moves in the arc groove toward the slide. When the cover is closed, the limit shaft is separated from the arc groove and located in the slide. The limit shaft releases the limiting effect on the rotating shaft. The driving unit continues to push the slide to move, so that the limit shaft and the rotating shaft slide linearly in the slide, thereby limiting the flipping of the connecting seat relative to the linkage rod, thereby further limiting the flipping of the cover, which is conducive to improving the stability of the cover in the closed state; 2. The cover is hinged on the frame to realize effective ventilation of the enclosed space through opening and closing of the cover. When the cover is difficult to open in time, once an explosion occurs, the air pressure expands rapidly. The explosion relief plate on the cover can be quickly broken under overpressure to release the internal pressure and alleviate the problem of damage to the shell of the enclosed workspace and its internal equipment; 3. When the cover is flipped toward the frame until it is just closed, the limit shaft disengages from the arc groove and is located in the slideway. The limit shaft releases the limiting effect on the rotating shaft, and the driving unit continues to push the slide to move, so that the clamping seat moves toward the limit seat, so that the clamping seat and the limit seat are clamped with each other, thereby limiting the flipping of the cover, which is beneficial to improving the stability of the cover in the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0025] Figure 2 It is a cross-sectional view of the driving unit and the connecting socket according to the first embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram of Example 1 of the present application for reflecting the closed state of the cover.

[0027] Figure 4 It is a cross-sectional view of Example 1 of the present application, which is used to reflect the closed state of the cover.

[0028] Figure 5 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0029] Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0030] Figure 7 It is a structural schematic diagram of Example 2 of the present application for reflecting the closed state of the cover.

[0031] Figure 8 It is a cross-sectional view of Example 2 of the present application, which is used to reflect the closed state of the cover.

[0032] Fig. 9 yes Figure 8 Schematic diagram of the enlarged portion B.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. frame; 11. opening; 12. cover plate; 13. mounting opening; 14. explosion venting plate; 2. slide seat; 21. linkage rod; 3. drive unit; 31. electric push rod; 4. connecting seat; 41. slideway; 42. arc groove; 43. rotating shaft; 44. limiting shaft; 45. flipping point; 5. lock; 51. limiting seat; 52. limiting rod; 53. sleeve; 54. snap-in seat; 55. guide slope; 56. limiting groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-9 This application is described in further detail. Example 1

[0035] The present application discloses a ventilation and explosion relief device for a closed space. Figure 1 and Figure 2 The ventilation and explosion relief device for a closed space includes a frame 1, which is designed to be installed on the outer shell or outer wall of the closed space. The closed space in the embodiment of the present application can be industrial equipment, warehouse walls or energy storage containers, etc. The ventilation and explosion relief device is suitable for environments with flammable, explosive or harmful gases.

[0036] An opening 11 is provided inside the frame 1 for achieving ventilation or explosion relief functions. A cover plate 12 is hinged on one side edge of the frame 1, and the cover plate 12 can be flipped around the hinge to control the opening and closing of the opening 11. An installation opening 13 is provided through the cover plate 12, and an explosion relief plate 14 for closing the installation opening 13 is fixedly connected to the cover plate 12. In an emergency, if the cover plate 12 cannot be opened normally, the internal pressure of the enclosed space increases abnormally, and the explosion relief plate 14 will be broken to release the pressure, thereby alleviating the destructive effect of the explosion accident on outdoor workers, indoor equipment and wall shells.

[0037] like Figure 2 and Figure 3 In order to realize the automatic control of the opening, closing and flipping of the cover plate 12, a control component is provided on the frame 1. The control component includes a slide 2 slidably provided on the frame 1, and a drive unit 3 for driving the slide 2 to move. The drive unit 3 can be a motor, a cylinder, a screw nut transmission mechanism or a pulley transmission mechanism. In the embodiment of the present application, the drive unit 3 is an electric push rod 31 fixedly connected to the frame 1, and the moving part of the electric push rod 31 is fixedly connected to the slide 2.

[0038] A linkage rod 21 is arranged between the slide 2 and the cover 12. One end of the linkage rod 21 is hinged to one of the slide 2 and the cover 12, and the other end of the linkage rod 21 is movably arranged on the other of the slide 2 and the cover 12 through a linkage unit.

[0039] When the electric push rod 31 is started, it pushes or pulls the slide seat 2, and then pushes or pulls the cover plate 12 to flip through the linkage rod 21, so as to open and close the opening 11, thereby achieving the effects of airflow exchange, heat dissipation or pressure relief.

[0040] like Figure 2 and Figure 4 The linkage unit includes a connecting seat 4 fixedly connected to the slide 2 or the cover 12. In the embodiment of the present application, one end of the linkage rod 21 is hinged to the slide 2, and the other end of the linkage rod 21 is movably arranged on the cover 12 through the connecting seat 4, and the connecting seat 4 is fixedly connected to the cover 12.

[0041] The connection seat 4 is provided with a slideway 41, the track of the slideway 41 is a straight line, one end of the slideway 41 is marked as a turning point 45, and the connection seat 4 is provided with an arc groove 42 at one end near the turning point 45, the arc groove 42 is in a bad arc shape, and one end of the arc groove 42 is connected to the slideway 41. The linkage rod 21 is fixedly connected with a rotating shaft 43, the rotating shaft 43 is slidably and rotatably arranged in the slideway 41, when the rotating shaft 43 moves to the turning point 45, the central axis of the arc groove 42 is collinear with the central axis of the rotating shaft 43. The linkage rod 21 is also fixedly connected with a limit shaft 44 near the rotating shaft 43, and the limit shaft 44 can be slidably arranged in the slideway 41 or the arc groove 42.

[0042] When the cover 12 is in the open state, the rotating shaft 43 is located at the turning point 45, and the limiting shaft 44 is located in the arc groove 42. The electric push rod 31 moves to drive the linkage rod 21 to turn over, and then drives the cover 12 to turn over. In this process, since the limiting shaft 44 is located in the arc groove 42, the rotating shaft 43 is limited to the turning point 45 of the slide 41. Therefore, during the turning process of the cover 12, the rotating shaft 43 is always located at the turning point 45, and the limiting shaft 44 is located in the arc groove 42.

[0043] The electric push rod 31 indirectly drives the cover plate 12 to gradually close. During this process, the limit shaft 44 moves in the arc groove 42 toward the slideway 41. When the cover plate 12 is just closed, the limit shaft 44 is separated from the arc groove 42 and located in the slideway 41. The limit shaft 44 releases the limiting effect on the rotating shaft 43. The electric push rod 31 continues to push the slide seat 2 to move, so that the limit shaft 44 and the rotating shaft 43 slide linearly in the slideway 41, thereby limiting the turning of the connecting seat 4 relative to the linkage rod 21, thereby further limiting the turning of the cover plate 12, which is conducive to improving the stability of the cover plate 12 in the closed state.

[0044] When the cover 12 is opened, the electric push rod 31 is controlled to drive the slide 2 to move in the opposite direction, so that the limit shaft 44 and the rotating shaft 43 move in the slideway 41 toward the flip point 45, until the rotating shaft 43 moves to the flip point 45, at which time the limit shaft 44 is aligned with the notch of the arc groove 42. The electric push rod 31 continues to push the slide 2 to move, so that the cover 12 flips. During this process, the rotating shaft 43 remains at the flip point 45, and the limit shaft 44 gradually slides into the arc groove 42. As the cover 12 flips, the limit shaft 44 slides in the arc groove 42. The cover 12 is opened for ventilation and pressure relief. Example 2

[0045] like Figure 5 and Figure 6 , the rest of the embodiment 2 of the present application is the same as the embodiment 1, except that, in order to further improve the stability of the cover 12 in the closed state, the present application provides a lock 5 between the frame 1 and the cover 12. The lock 5 includes a limit seat 51 fixedly connected to the cover 12, and a clamping seat 54 slidably arranged on the frame 1, wherein the clamping seat 54 is fixedly connected to the linkage rod 21 or the slide 2. In the embodiment of the present application, the clamping seat 54 is fixedly connected to the slide 2.

[0046] like Figure 7 and Figure 8 The electric push rod 31 drives the slide 2 to move, and then drives the cover 12 to flip and close through the linkage rod 21. When the cover 12 just closes the opening 11, the electric push rod 31 continues to drive the slide 2 to move, so that the cover 12 remains in a closed state, while driving the clamping seat 54 to move toward the limit seat 51, and the two seats cooperate with each other to achieve the locking effect of the cover 12, which is beneficial to further improve the sealing effect between the cover 12 and the frame 1 when the cover 12 is in a closed state.

[0047] like Figure 7 and Fig. 9 Specifically, the limiting seat 51 is fixedly connected to the limiting rod 52, and the limiting rod 52 is rotatably sleeved with a sleeve 53. The clamping seat 54 is provided with a limiting groove 56, and the limiting groove 56 is used to clamp the sleeve 53 on the limiting rod 52. When the cover 12 is closed, the notch of the limiting groove 56 faces the direction of the limiting rod 52. The clamping seat 54 is provided with a guiding inclined surface 55 at the notch position close to the limiting groove 56, and the guiding inclined surface 55 is used to guide the sleeve 53 so that the sleeve 53 can be inserted into the limiting groove 56 more smoothly. When the sleeve 53 on the limiting rod 52 is clamped in the limiting groove 56, the outer wall of the sleeve 53 abuts against the groove wall of the limiting groove 56, so as to limit the opening of the cover 12, thereby further improving the sealing stability between the cover 12 and the frame 1 in the closed state.

[0048] In addition, the width of the arc groove 42 is less than or equal to the width of the slide 41 . In the embodiment of the present application, the width of the arc groove 42 is less than the width of the slide 41 , thereby reducing the possibility of the rotating shaft 43 being stuck in the arc groove 42 .

[0049] When the cover 12 is closed and the lock buckle 5 is locked, the sleeve 53 on the limiting rod 52 is engaged with the limiting groove 56 , and the limiting shaft 44 and the rotating shaft 43 are both located in the slideway 41 and are arranged away from the turning point 45 .

[0050] When ventilation is required, the electric push rod 31 starts and pushes the slide 2 to move, so that the clamping seat 54 gradually moves away from the limiting seat 51, that is, the sleeve 53 of the limiting rod 52 gradually disengages from the limiting groove 56. In this process, the limiting shaft 44 and the rotating shaft 43 gradually move toward the flip point 45. When the rotating shaft 43 moves to abut against the flip point 45, the limiting shaft 44 is aligned with the opening 11 of the arc groove 42. At this time, the limiting rod 52 completely disengages from the limiting groove 56, and the lock 5 is unlocked. The electric push rod 31 continues to push the slide 2 to move, so that the linkage rod 21 pushes the connecting seat 4, and then pushes the cover plate 12 to flip. In this process, the rotating shaft 43 is active at the flip point 45, and the limiting shaft 44 gradually slides into the arc groove 42 and moves in the arc groove 42, so that the cover plate 12 can be opened freely.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ventilation and explosion relief device for a closed space, characterized in that: The invention comprises a frame (1) for being mounted on a closed space shell, an opening (11) being arranged in the frame (1), a cover plate (12) being hingedly connected to the frame (1), and a control component for controlling the opening and closing of the cover plate (12) being arranged on the frame (1), thereby controlling the opening and closing of the opening (11); a limit seat (51) being fixedly connected to the cover plate (12), a clamping seat (54) for clamping and cooperating with the limit seat (51) being slidably arranged on the frame (1), and the control component drives the clamping seat (54) to move via a linkage unit; When the cover plate (12) is closed and seals the opening (11), the control assembly and the linkage unit cooperate to drive the clamping seat (54) to move, so as to drive the clamping seat (54) and the limiting seat (51) to cooperate with each other, thereby achieving a locking effect on the cover plate (12).

2. A ventilation and explosion relief device for a closed space according to claim 1, characterized in that: The control assembly comprises a slide seat (2) slidably arranged on the frame (1) and a drive unit (3) arranged on the frame (1), wherein the drive unit (3) is used to control the movement of the slide seat (2), and a linkage rod (21) is arranged between the slide seat (2) and the cover plate (12), wherein one end of the linkage rod (21) is hinged to one of the slide seat (2) and the cover plate (12), and the other end of the linkage rod (21) is movably arranged on the other part through the linkage unit.

3. A ventilation and explosion relief device for a closed space according to claim 2, characterized in that: The linkage unit comprises a connecting seat (4), the connecting seat (4) being fixedly connected to one of the sliding seat (2) or the cover plate (12), a slideway (41) being arranged on the connecting seat (4), one end of the slideway (41) being marked as a turning point (45), a rotating shaft (43) for being inserted into the slideway (41) being fixedly connected to the linkage rod (21), an arc groove (42) being arranged at one end of the slideway (41) close to the turning point (45), the arc groove (42) being connected to the slideway (41), and a limiting shaft (44) being fixedly connected to the linkage rod (21), the limiting shaft (44) being slidably arranged in the slideway (41) or the arc groove (42); When the rotating shaft (43) is located at the flip point (45), the central axis of the arc-shaped groove (42) is colinear with the central axis of the rotating shaft (43), and the limiting shaft (44) can enter the arc-shaped groove (42) and slide in the limiting shaft (44); When the cover plate (12) is in a closed state, the rotating shaft (43) and the limiting shaft (44) are both located in the slideway (41); when the cover plate (12) is in an open state, the rotating shaft (43) is located at the flip point (45), and the limiting shaft (44) can slide into the arc-shaped groove (42).

4. A ventilation and explosion relief device for a closed space according to claim 3, characterized in that: The groove width of the arc-shaped groove (42) is less than or equal to the width of the slideway (41).

5. The ventilation and explosion relief device for a closed space according to claim 2, characterized in that: The clamping seat (54) is fixedly connected to the linkage rod (21) or the sliding seat (2).

6. The ventilation and explosion relief device for a closed space according to claim 1, characterized in that: The limiting seat (51) is provided with a limiting rod (52), the clamping seat (54) is provided with a limiting groove (56) for clamping the limiting rod (52), and the clamping seat (54) is provided with a guiding inclined surface (55), the guiding inclined surface (55) being used to guide the limiting rod (52) so as to guide the limiting rod (52) into the limiting groove (56).

7. A ventilation and explosion relief device for a closed space according to claim 6, characterized in that: A sleeve (53) is rotatably sleeved on the limiting rod (52), and the sleeve (53) is used to abut against the limiting groove (56) of the clamping seat (54).

8. A ventilation and explosion relief device for a closed space according to any one of claims 1 to 7, characterized in that: The cover plate (12) is provided with a mounting opening (13) extending therethrough, and the cover plate (12) is fixedly connected with an explosion relief plate (14) in the mounting opening (13).

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