Explosion-wave-proof valve device and protective air-tight door

Abstract

The invention discloses an anti-explosion valve device, and belongs to the technical field related to protective equipment. The explosion-proof wave valve unit is arranged in the outer frame, the explosion-proof wave valve unit comprises a supporting body, a hinge is arranged on the supporting body, the hinge is arranged up and down relative to the supporting body, and the hinge is hinged to the supporting body; the hinges turn over upwards and downwards and abut against the outer frame when subjected to the impact wave effect so as to seal the ventilation channel in the upper portion and the ventilation channel in the lower portion of the supporting body. In addition, the invention further provides the protective air-tight door. According to the invention, the hinges can turn over under the impact of shock waves, so that the ventilation channel of the outer frame is cut off, and the hinges can be opened in a normal state to realize the conduction of the ventilation channel. The whole structure can be completely composed of metal components, bidirectional impact can be borne, and meanwhile the long service life is achieved. And after being impacted, the hinge can be automatically reset, so that the maintenance-free effect in the whole service life is realized.

Description

Technical Field

[0001] The present invention relates to the technical field related to protective equipment, and more specifically, to an explosion-proof valve device and a protective closed door. Background Art

[0002] High-energy electromagnetic pulses can pose a serious threat to sensitive electronic, electrical equipment and systems within the project. In order to ensure the normal operation and operation of electronic equipment and wind power and hydropower equipment within the project, engineering anti-electromagnetic pulse measures must be taken.

[0003] For the main body of the project, since its walls or protective layers are relatively thick, the energy of the electromagnetic pulse that enters the main body of the project through the protective layers is very small. As for the opening structure opened on the main body of the project, the protective structure set at the opening is relatively weak, which easily leads to a reduction in its ability to protect against electromagnetic pulses. The opening structure opened on the main body of the project generally includes vents set by the ventilation and air-conditioning system. In the prior art, explosion-proof valves are set on the vents to ensure the safety of personnel and equipment inside the project when subjected to explosions or impact loads, while also ensuring uninterrupted ventilation of the project. The explosion-proof valve can be closed quickly and automatically under the action of the overpressure of the shock wave, blocking most of the shock wave outside the project. After the shock wave, the explosion-proof valve can be automatically reset in time without affecting the normal ventilation inside the project.

[0004] In the prior art, explosion-proof valves can generally be divided into two types: pendulum valves and hose valves. For pendulum valves, they can only be installed vertically and are gravity-sensitive structures. The verticality of the installation will directly affect their normal ventilation and wave-absorbing performance. In addition, pendulum valves are sensitive to the direction of shock waves and cannot bear bidirectional shock waves. They can only withstand forward shock waves and cannot bear shock waves laterally or in reverse. For hose valves, they are not resistant to high temperatures. The applicable temperature is -34°C to 40°C. The maximum temperature they can withstand cannot be higher than 110°C. They cannot be installed in high-temperature places such as smoke exhaust ports. In addition, hose valves also have the problems of easy aging and short life (generally need to be replaced every 10 years), low resistance to shock waves, and overpressure design value less than 0.6MPa, and they are sensitive to the direction of shock waves. They cannot bear shock waves in both directions and can only withstand forward shock waves. They cannot bear shock waves laterally or in reverse. Summary of the invention

[0005] 1. Technical issues

[0006] In summary, how to provide an explosion-proof wave valve with a new structure that can withstand bidirectional impacts while having a long service life has become an urgent problem to be solved by those skilled in the art.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides an explosion-proof valve device. In the present invention, the explosion-proof valve device comprises:

[0010] An outer frame, the outer frame is a cylindrical structure, and the outer frame has a ventilation channel capable of lateral ventilation;

[0011] An explosion-proof valve unit, the explosion-proof valve unit is arranged in the outer frame and located on the ventilation channel, the explosion-proof valve unit includes a support body, the support body includes a wave-facing surface and a back wave surface, a movable leaf is arranged on the support body, the movable leaf is arranged on the wave-facing surface of the support body and the back wave surface of the support body, the movable leaf is arranged up and down relative to the support body, and the movable leaf is hinged to the support body;

[0012] The movable leaf can be turned up and down in the vertical direction when subjected to the shock wave, and after turning over, the movable leaf can abut against the outer frame to close the ventilation channel at the upper part and the ventilation channel at the lower part of the support body;

[0013] When the movable leaf is not affected by the shock wave, the two movable leaves arranged on the same side have a relative movement tendency and are separated from the outer frame to connect the ventilation channel at the upper part and the ventilation channel at the lower part of the support body.

[0014] Preferably, in the explosion-proof wave valve device provided by the present invention, the ventilation channel is a linear rectangular channel; the support body is arranged at the middle position in the length direction of the ventilation channel and is located at the middle position in the height direction of the ventilation channel; the hinge is a hard structure, the hinge is a rectangular hinge, both ends of the hinge are in sliding contact with the inner side surface of the ventilation channel, one side of the hinge is hinged to the support body, and the other side of the hinge is airtightly abutted against the upper side or lower side surface of the ventilation channel.

[0015] Preferably, in the explosion-proof valve device provided by the present invention, both the windward side and the leeward side of the support body are provided with limiting bodies for supporting the movable leaf under normal conditions.

[0016] Preferably, in the explosion-proof valve device provided by the present invention, a contact surface is provided on the limiting body, and the contact surface is an inclined surface, and the contact surface abuts against the movable leaf.

[0017] Preferably, in the explosion-proof valve device provided by the present invention, the hinge is a curved structure.

[0018] Preferably, in the explosion-proof valve device provided by the present invention, the hinge is a planar structure.

[0019] Preferably, in the explosion-proof valve device provided by the present invention, a flexible filter net is provided on the side of the hinge that abuts against the ventilation channel, and filter holes are provided on the flexible filter net.

[0020] Preferably, in the explosion-proof valve device provided by the present invention, a reinforcing frame is provided on the hinge.

[0021] Preferably, in the explosion-proof valve device provided by the present invention, a return spring is provided on the movable leaf, and the return spring is connected to the support body or the movable leaf on the same side.

[0022] Preferably, in the explosion-proof valve device provided by the present invention, the support body is elastically arranged in the ventilation channel along the airflow direction.

[0023] The present invention also provides a protective airtight door, comprising a door leaf, on which a ventilation valve installation window is arranged. The present invention also includes the explosion-proof valve device as described above, wherein the explosion-proof valve device is arranged on the ventilation valve installation window.

[0024] (III) Beneficial effects

[0025] As can be seen from the above, the present invention provides an explosion-proof valve device, including: an outer frame, the outer frame is a cylindrical structure, the outer frame has a ventilation channel; an explosion-proof valve unit, the explosion-proof valve unit is arranged in the outer frame and is located on the ventilation channel, the explosion-proof valve unit includes a support body, the support body includes a wave-facing surface and a back wave surface, a hinge is arranged on the support body, the hinge is arranged on the wave-facing surface of the support body and the back wave surface of the support body, the hinge is arranged up and down relative to the support body, and the hinge is hinged to the support body; when the hinge is affected by a shock wave, it flips upward and downward and resists against the outer frame to close the ventilation channel at the top and the ventilation channel at the bottom of the support body; when the hinge is not affected by a shock wave, the two hinges arranged on the same side have a relative movement tendency and separate from the outer frame to conduct the ventilation channel at the top and the ventilation channel at the bottom of the support body. In the explosion-proof valve device provided by the present invention, a support body is provided in the outer frame and a loose-leaf is installed through the support body. The loose-leaf can be flipped by the impact of the shock wave to achieve the truncation of the ventilation channel of the outer frame. In addition, the loose-leaf can also be opened to achieve the conduction of the ventilation channel under normal conditions. The overall structure of the present invention can be composed entirely of metal components, which can withstand bidirectional impacts and have a long service life. After the impact, the loose-leaf can also automatically reset, achieving maintenance-free during the entire life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0027] Figure 1 A schematic structural diagram of an explosion-proof valve device in an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the explosion-proof valve device after the hinge structure is changed in the embodiment of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the explosion-proof valve device after one side of the hinge is turned over and closed in the embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the assembly structure between the support body and the outer frame in one embodiment of the present invention;

[0031] Figure 5 The figure is a schematic diagram of the assembly structure between the support body and the outer frame in another embodiment of the present invention.

[0032] exist Figure 1 The length, width and height directions are shown in FIG. , and the impact direction of the shock wave is shown.

[0033] exist Figure 1 The structure of two kinds of return springs are shown, which are respectively located on the left and right sides of the support body.

[0034] exist Figures 1 to 5 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0035] Outer frame 1, supporting body 2, movable leaf 3, return spring 4, limiting body 5. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention encompasses such modifications and variations within the scope of the appended claims and their equivalents.

[0037] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Please refer to Figures 1 to 5 The present invention provides an explosion-proof valve device, which is installed on the ventilation valve installation window of the protective closed door, for achieving ventilation (gas exchange), and can be closed in time when impacted by a shock wave. In the present invention, the explosion-proof valve device mainly includes two parts: 1. an outer frame 1; 2. an explosion-proof valve unit.

[0039] The outer frame 1 is the skeleton structure of the explosion-proof wave valve device, which is made of metal material (stainless steel plate or aluminum alloy profile). The outer frame 1 can be formed by bending a piece of metal plate, or it can be assembled from multiple metal components. In one embodiment of the present invention, the outer frame 1 is a cylindrical structure, specifically, the outer frame 1 can be a rectangular cylindrical structure or a circular cylindrical structure. The outer frame 1 is preferably a rectangular cylindrical structure, and when the ventilation valve installation window is designed as a rectangular window, the number of explosion-proof wave valve devices in the ventilation valve installation window can be adjusted. For example, when the explosion-proof wave valve device is set to one, the outer frame 1 of the explosion-proof wave valve device is adapted to the shape of the ventilation valve installation window, and can be completely filled in the ventilation valve installation window. When a ventilation valve installation window needs to be installed with multiple explosion-proof wave valve devices, for example, two, the width dimension of the outer frame 1 of the explosion-proof wave valve device is consistent with the width dimension of the ventilation valve installation window, but the height dimension of the ventilation valve installation window is at least twice the height dimension of the outer frame 1, so that two explosion-proof wave valve devices can be installed in one ventilation valve installation window (two explosion-proof wave valve devices are arranged in a row in the height direction). When multiple explosion-proof wave valve devices are installed in the ventilation valve installation window, sealing strips or sealing plates need to be arranged between two adjacent explosion-proof wave valve devices and between the explosion-proof wave valve device and the ventilation valve installation window to ensure that the ventilation valve installation window can only be ventilated through the explosion-proof wave valve device. When the outer frame 1 is a circular cylindrical structure, an explosion-proof wave valve device is preferably arranged on a ventilation valve installation window, that is, the ventilation valve installation window is designed as a circular window structure, the shape of the outer frame 1 of the explosion-proof wave valve device is adapted to the shape of the ventilation valve installation window, the outer frame 1 is installed on the ventilation valve installation window and a sealing strip or sealing plate is arranged. Based on this structural design, multiple ventilation valve installation windows can be arranged on the protective closed door to ensure the ventilation volume.

[0040] When the outer frame 1 is installed on the ventilation valve installation window, a sealing strip or a sealing plate needs to be provided to achieve sealing between the outer frame 1 and the ventilation valve installation window or between the outer frame 1 and the outer frame 1, and the airflow can only be circulated and exchanged through the explosion-proof valve device. The outer frame 1 has a ventilation channel for realizing gas flow. Specifically, the outer frame 1 has a ventilation channel capable of transverse ventilation, that is, the ventilation channel is mainly used for the passage of transverse airflow. In the present invention, when the outer frame 1 is a rectangular cylindrical structure, the ventilation channel is a rectangular channel structure, and when the outer frame 1 is a circular cylindrical structure, the ventilation channel is a circular channel structure.

[0041] The explosion-proof valve unit is a component arranged inside the outer frame 1. Its overall contour shape is designed according to the ventilation channel of the outer frame 1, and its design standard is to be able to be installed inside the ventilation channel and to achieve the conduction and cutting off of the ventilation channel (mainly the shape of the hinge 3 of the explosion-proof valve unit is designed).

[0042] The explosion-proof valve unit is fixedly arranged in the outer frame 1 and is located on the ventilation channel. Since the explosion-proof valve unit is mainly used to deal with the impact of external shock waves, the explosion-proof valve unit is arranged close to the inner end of the ventilation channel on the outer frame 1 in the direction from the outside to the inside (for the closed protective door, from the outside to the inside). In this way, when subjected to a shock wave, the shock wave will pass through a longer ventilation channel before impacting the explosion-proof valve unit, which will reduce the impact energy.

[0043] In the present invention, the structure of the explosion-proof valve unit is as follows: it includes a support body 2, which is a rod-shaped structure as a whole, and its cross section is preferably rectangular or square, and can also be circular or elliptical. The support body 2 is made of solid metal profiles, and the support body 2 adopts an integrated structural design, which can improve the structural strength of the support body 2 and meet the high-explosive impact and the reliability of the installation of the loose leaf 3. The support body 2 includes a front wave surface (a side facing the outside in the actual installation state) and a back wave surface (a side facing the inside in the actual installation state). The present invention is provided with a loose leaf 3 on the support body 2, and the loose leaf 3 is arranged on the front wave surface of the support body 2 and the back wave surface of the support body 2. The loose leaf 3 is arranged up and down relative to the support body 2, and the loose leaf 3 is hinged to the support body 2. Specifically, one side edge of the loose-leaf 3 for hinged connection with the support body 2 is provided with a curling structure for forming a circular hole structure, and a corresponding circular hole is provided on the support body 2. A hinge axis is provided through the loose-leaf 3 and the circular hole structure on the support body 2, thereby realizing the hinge connection between the loose-leaf 3 and the support body 2. Its structure is similar to the hinge structure in the prior art.

[0044] According to the different installation positions of the loose-leaf 3 on the support body 2, the loose-leaf 3 can be divided into four types, which are respectively installed at the upper edge of the wave-facing surface, the lower edge of the wave-facing surface, the upper edge of the back wave surface, and the lower edge of the back wave surface. When the support body 2 is installed in the ventilation channel, the four loose-leaf 3 can be turned over to abut against the inner side of the ventilation channel, thereby realizing the cutting off of the ventilation channel.

[0045] Specifically, for the two types of loose-leaf pages 3 arranged above and below the wavefront, when the loose-leaf pages 3 are acted upon by a frontal shock wave (i.e., a shock wave in the direction of the wavefront), the loose-leaf pages 3 arranged above the wavefront can flip upwards, and the loose-leaf pages 3 arranged below the wavefront can flip downwards. After flipping, the loose-leaf pages 3 can abut against the outer frame 1 (i.e., abut against the inner side wall of the ventilation passage), so as to close the upper ventilation passage and the lower ventilation passage of the support body 2. For the two types of loose-leaf pages 3 arranged above and below the back wavefront, when the loose-leaf pages 3 are acted upon by a back shock wave (i.e., a shock wave in the direction of the back wavefront), the loose-leaf pages 3 arranged above the back wavefront can flip upwards, and the loose-leaf pages 3 arranged below the back wavefront can flip downwards. After flipping, the loose-leaf pages 3 can abut against the outer frame 1 (i.e., abut against the inner side wall of the ventilation passage), so as to close the upper ventilation passage and the lower ventilation passage of the support body 2.

[0046] The loose-leaf 3 can be turned up and down in the vertical direction when subjected to the shock wave, and the loose-leaf 3 can be against the outer frame after turning over. The loose-leaf 3 arranged on the upper part of the support body 3 turns up when subjected to the shock wave (turns down when reset), and the loose-leaf 3 arranged on the lower part of the support body 3 turns down when subjected to the shock wave (turns up when reset). For the same ventilation channel, two loose-leafs need to turn over at the same time to achieve the closure of the ventilation channel.

[0047] It should be noted that: the two end edges (the two ends in the horizontal direction) of the loose-leaf 3 are against the ventilation channel and can slide relative to the ventilation channel, so that the two end edges of the loose-leaf 3 can be sealed. Furthermore, the present invention is provided with a concave fan-shaped groove structure in the ventilation channel corresponding to the moving track of the loose-leaf 3, and the two end edges of the loose-leaf 3 extend into the fan-shaped groove structure. The two end edges of the loose-leaf 3 are against the bottom surface (vertical surface) of the fan-shaped groove structure and can slide relatively, so that the sealing of the two end edges of the loose-leaf 3 can be further improved.

[0048] As for the structure of the loose-leaf 3, the loose-leaf 3 is designed according to the shape of the ventilation channel, for example: when the ventilation channel is a rectangular channel structure, the loose-leaf 3 adopts a rectangular structure; when the ventilation channel is a circular or elliptical structure, the loose-leaf 3 adopts a semicircular or semi-elliptical structure. The shape of the loose-leaf 3 is specifically designed to be able to abut against the inner side of the ventilation channel after being flipped by the shock wave to achieve the closure of the ventilation channel (upper or lower ventilation channel). In addition, when the loose-leaf 3 is impacted by the shock wave, it is preferable that the angle between the loose-leaf 3 and the horizontal plane after flipping is maintained at 40° to 50°, and at this time, the loose-leaf 3 can abut against the inner side of the ventilation channel to achieve the closure of the ventilation channel.

[0049] In the present invention, when the loose-leaf 3 is not affected by the shock wave, the two loose-leafs 3 arranged on the same side have a tendency to move relative to each other and are separated from the outer frame 1, so as to conduct the ventilation channel on the upper part of the support body 2 and the ventilation channel on the lower part. The loose-leaf 3 should be separated from the ventilation channel under normal conditions (i.e., when not affected by the shock wave) to achieve the conduction of the ventilation channel, so the loose-leaf 3 needs to have a tendency to tend toward normality. Specifically, the present invention provides a reset spring 4 on the loose-leaf 3, and the reset spring 4 is connected to the support body 2 or the loose-leaf 3 on the same side. The reset spring 4 can be an ordinary spring (a long straight cylindrical spring). When the reset spring 4 is an ordinary spring, one end of the reset spring 4 is connected to the loose-leaf 3, and the other end of the reset spring 4 is connected to the other loose-leaf 3 on the same side, so that the reset spring 4 can apply a pulling force to the two loose-leafs 3, so that the loose-leaf 3 flips toward the middle. In addition, the reset spring 4 can also be a compression spring, which is arranged between the loose-leaf 3 and the support body 2. When the loose-leaf 3 flips over from the normal state, it can apply pressure to the compression spring to deform it. After the shock wave, the compression spring resets and pushes the loose-leaf 3 back to the normal state.

[0050] In the present invention, the loose-leaf 3 may be an integrated structure or a split structure, that is, the loose-leaf 3 includes at least two loose-leaf 3 units, and the two loose-leaf 3 units are arranged in a stacked manner along the width direction of the ventilation channel (that is, the adjacent sides of the two adjacent loose-leaf 3 units overlap).

[0051] On the horizontal plane, the air supply direction of the ventilation channel is the length direction, the width direction is perpendicular to the length direction, and the height direction is the vertical direction. In a specific embodiment of the present invention, the ventilation channel is a straight rectangular channel, that is, the ventilation channel is a straight channel in the length direction, and the cross section in the height direction is a rectangular structure. The support body 2 is arranged in the middle position in the length direction of the ventilation channel and is located in the middle position in the height direction of the ventilation channel. The loose-leaf 3 is a hard structure, and the loose-leaf 3 is preferably a metal loose-leaf 3, such as a stainless steel loose-leaf 3 or an aluminum profile loose-leaf 3. When the ventilation channel is a straight rectangular channel, the loose-leaf 3 is a rectangular loose-leaf 3, and the two ends of the loose-leaf 3 (i.e., the two ends in the width direction of the ventilation channel) are in sliding contact with the inner side surface of the ventilation channel (the inner walls on both sides in the width direction of the ventilation channel), one side of the loose-leaf 3 is hinged to the support body 2, and the other side of the loose-leaf 3 is airtightly offset against the upper side surface or the lower side surface of the ventilation channel.

[0052] As another structural improvement of the present invention: the present invention is provided with a limiter 5 on both the windward side and the leeward side of the support body 2 for supporting the loose-leaf 3 in a normal state so that the loose-leaf 3 maintains a normal state. At the same time, when a reset spring 4 is provided, the limiter 5 can also limit the reset and flipping of the loose-leaf 3 to prevent the loose-leaf 3 from being reset and flipped excessively (the loose-leaf 3 is reset and flipped to horizontal or nearly horizontal) and unable to intercept the shock wave. Specifically, the present invention is provided with a contact surface on the limiter, and the contact surface is an inclined surface (maintaining an angle of 40° to 50° with the horizontal plane), and the contact surface is against the loose-leaf 3, so that the loose-leaf 3 can maintain a normal state (maintaining an angle of 40° to 50° with the horizontal plane).

[0053] In the present invention, the contour shape of the loose-leaf 3 is designed according to the shape (cross-sectional shape) of the ventilation passage. The overall structure of the loose-leaf 3 can be a flat structure or a curved structure. When the loose-leaf 3 is designed with a curved structure, the bending direction of the loose-leaf 3 is: concave toward the port direction of the ventilation passage, that is, viewed from the port direction of the ventilation passage, the opposite loose-leaf 3 is a curved structure convex forward (toward the other port direction). With the curved structure design, when subjected to the impact of the shock wave, due to the increase in the area of ​​the loose-leaf 3, it can more stably offset the inner side of the ventilation passage to achieve the truncation of the ventilation passage. At the same time, when the loose-leaf 3 is in normal state, the airflow can flow through the curved surface of the loose-leaf 3, and the flow influence of the loose-leaf 3 on the airflow can be reduced.

[0054] Under normal conditions, there is a gap between the loose leaf 3 and the inner wall of the ventilation channel for airflow (keeping the internal and external gas exchange unimpeded). In order to achieve gas filtration, the present invention provides a flexible filter net on the side of the loose leaf 3 that is used to abut against the ventilation channel, and provides filter holes on the flexible filter net, so that the airflow will be filtered by the filter net when passing through the loose leaf 3. The filter net is provided with a certain degree of ductility (or a slightly longer length) to ensure that the loose leaf 3 can be turned over smoothly.

[0055] In order to prevent the hinge 3 from deforming and causing the ventilation channel to fail to close when subjected to the impact of the shock wave, the present invention provides a reinforcing frame on the hinge 3. The reinforcing frame is a metal strip and can be arranged on the back of the hinge 3 in a mesh structure.

[0056] As another improvement focus of the present invention, the present invention proposes the following optimized design: the support body 2 is elastically arranged in the ventilation channel along the airflow direction. Specifically, long holes are opened on the two side walls in the width direction of the ventilation channel, and the long holes are horizontally arranged along the length direction of the ventilation channel. A slider is arranged in the long hole, and a baffle is arranged on the outside of the outer frame 1. The baffle covers the long hole, and can close the long hole while ensuring that the slider slides smoothly in the long hole. In the sliding direction of the slider, springs are arranged on both sides of the slider, so that the slider can slide elastically in the long hole, and the two ends of the support body 2 are fixedly connected to the slider, so that the entire explosion-proof valve unit can move elastically in the outer frame 1, and play a buffering role against the impact of the shock wave. Furthermore, the long hole can be designed as a rectangular window, the slider adopts a rectangular block structure, and springs are arranged at the four corners of the slider, and the springs are connected to the four corners of the rectangular window, so that the slider can move in two dimensions within the rectangular window (that is, the slider can move elastically within the vertical range formed by the rectangular window), so that when a certain hinge 3 fails to close, the support body 2 can move and be closed by another hinge 3 on the same side. In this embodiment, the height dimension of the hinge 3 is not less than the height dimension of the ventilation channel, that is, when one hinge 3 on the same side is closed, the hinge 3 and the outer frame 1 are abutted against each other, and the downward component force drives the support body 2 to move until the support body 2 abuts against the inner side of the outer frame 1, at which time the hinge 3 on one side can cut off the ventilation channel.

[0057] Based on the above-mentioned explosion-proof valve device, the present invention further provides a protective closed door, including a door leaf, on which a ventilation valve installation window is arranged, and the present invention also includes the above-mentioned explosion-proof valve device, which is arranged on the ventilation valve installation window. The number of explosion-proof valve devices installed in the ventilation valve installation window is adjustable.

[0058] As can be seen from the above, the present invention provides an explosion-proof valve device. In the present invention, the explosion-proof valve device includes: an outer frame 1, the outer frame 1 is a cylindrical structure, and the outer frame 1 has a ventilation channel; an explosion-proof valve unit, the explosion-proof valve unit is arranged in the outer frame 1 and is located on the ventilation channel, the explosion-proof valve unit includes a support body 2, the support body 2 includes a wave-facing surface and a back wave surface, and a hinge 3 is arranged on the support body 2, the hinge 3 is arranged on the wave-facing surface of the support body 2 and the back wave surface of the support body 2, the hinge 3 is arranged up and down relative to the support body 2, and the hinge 3 is hinged to the support body 2; when the hinge 3 is affected by the shock wave, it flips upward and downward and abuts against the outer frame 1 to close the ventilation channel at the top and the ventilation channel at the bottom of the support body 2; when the hinge 3 is not affected by the shock wave, the two hinges 3 arranged on the same side have a relative movement tendency and are separated from the outer frame 1 to conduct the ventilation channel at the top and the ventilation channel at the bottom of the support body 2.

[0059] Through the above structural design, in the explosion-proof valve device provided by the present invention, a support body 2 is provided in the outer frame 1, and a loose-leaf 3 is installed by the support body 2. The loose-leaf 3 can be flipped by the impact of the shock wave to achieve the truncation of the ventilation channel of the outer frame 1. In addition, under normal conditions, the loose-leaf 3 can also be opened to achieve the conduction of the ventilation channel. The overall structure of the present invention can be composed entirely of metal components, which can withstand bidirectional impacts and have a long service life. After being subjected to an impact, the loose-leaf 3 can also automatically reset, achieving maintenance-free operation during the entire life cycle.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An explosion-proof valve device, characterized in that: include: An outer frame, the outer frame is a cylindrical structure, and the outer frame has a ventilation channel capable of lateral ventilation; An explosion-proof valve unit, the explosion-proof valve unit is arranged in the outer frame and located on the ventilation channel, the explosion-proof valve unit includes a support body, the support body includes a wave-facing surface and a back wave surface, a movable leaf is arranged on the support body, the movable leaf is arranged on the wave-facing surface of the support body and the back wave surface of the support body, the movable leaf is arranged up and down relative to the support body, and the movable leaf is hinged to the support body; The movable leaf can be turned up and down in the vertical direction when subjected to the shock wave, and after turning over, the movable leaf can abut against the outer frame to close the ventilation channel at the upper part and the ventilation channel at the lower part of the support body; When the movable leaf is not affected by the shock wave, the two movable leaves arranged on the same side have a relative movement tendency and are separated from the outer frame to connect the ventilation channel at the upper part and the ventilation channel at the lower part of the support body.

2. The explosion-proof valve device according to claim 1, characterized in that: The ventilation channel is a straight rectangular channel; The support body is arranged at the middle position of the ventilation passage in the length direction and at the middle position of the ventilation passage in the height direction; The hinge is a hard structure, and is a rectangular hinge. Both ends of the hinge are in sliding contact with the inner side of the ventilation channel. One side of the hinge is hinged to the support body, and the other side of the hinge is airtightly against the upper side or lower side of the ventilation channel.

3. The explosion-proof valve device according to claim 2, characterized in that: The windward side and the leeward side of the support body are both provided with limiting bodies for supporting the loose-leaf under normal conditions.

4. The explosion-proof valve device according to claim 3, characterized in that: The limiting body is provided with a contact surface, which is an inclined surface and abuts against the movable leaf.

5. The explosion-proof valve device according to claim 1, characterized in that: The movable leaf is a curved surface structure; Alternatively, the loose-leaf is a planar structure.

6. The explosion-proof valve device according to claim 5, characterized in that: A flexible filter net is arranged on the side of the hinge for contacting with the ventilation channel, and filter holes are arranged on the flexible filter net.

7. The explosion-proof valve device according to claim 1, characterized in that: A reinforcement frame is arranged on the movable leaf.

8. The explosion-proof valve device according to any one of claims 1 to 7, characterized in that: A return spring is arranged on the movable leaf, and the return spring is connected to the supporting body or the movable leaf on the same side.

9. The explosion-proof valve device according to any one of claims 1 to 7, characterized in that: The support body is elastically arranged in the ventilation channel along the air flow direction.

10. A protective closed door, comprising a door leaf, a ventilation valve installation window is arranged on the door leaf, characterized in that: It also includes an explosion-proof valve device as described in any one of claims 1 to 9, wherein the explosion-proof valve device is arranged on the ventilation valve installation window.

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