Light dangling valve

Abstract

The utility model discloses a light dangling valve which comprises a door frame, a main door plate is installed on the door frame in a hinged mode, two door handles are arranged on the main door plate, a plurality of ventilation openings are formed in the main door plate, the ventilation openings are vertically arranged, two connecting arms are symmetrically arranged at the upper end of each ventilation opening, and the two connecting arms are connected with the door handles. The lower ends of the two connecting arms are each provided with a movable plate, each connecting arm is in an L shape, and each movable plate is provided with a connecting assembly matched with the main door plate. Through the arrangement of the connecting assembly, when the movable plate collides with the main door plate, the movable plate and the main door plate are connected through the connecting assembly, so that the movable plate and the main door plate are stably attached, the situation that dust, nitrate smoke and the like enter due to inertia rebound or impact weakening is avoided, and the safety of internal personnel is improved.

Description

Technical Field

[0001] This utility model relates to the field of civil defense equipment technology, and in particular to a lightweight swing gate. Background Technology

[0002] In modern industrial and construction engineering, the design and application of explosion-proof systems are of paramount importance. Especially in petrochemical, coal mining, and other flammable and explosive environments, explosion-proof valves are widely used to protect facilities and personnel; their main function is to prevent the propagation of shock waves and flames generated by an explosion, and to reduce the impact of the explosion on the site by effectively closing ventilation openings.

[0003] Existing blast wave valve designs achieve valve closure by utilizing the force of the shock wave. In the event of an explosion or similar incident, the valve should close promptly to prevent the spread of high-temperature gases and harmful substances. However, under normal conditions, the valve plate of many blast wave valves is suspended. While this design can mitigate the impact of corrosion and dust on valve rotation to some extent, it also introduces new safety hazards. When subjected to an blast wave, the valve plate will close rapidly, but due to the powerful force of the shock wave, the valve plate may impact the main valve plate at a high speed, resulting in a rebound phenomenon.

[0004] The rebounding trapdoor may not have closed completely, causing the ventilation opening to reopen. During this process, dust, fumes, and harmful gases generated by the explosion may enter the air-raid shelter through the ventilation opening, posing a threat to the lives of the staff. At the same time, this may also lead to a secondary explosion and fire risk inside the facility, further increasing the safety hazards.

[0005] To address this issue, a lightweight swing valve is proposed to solve the problems existing in the current technology. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems by providing a lightweight swing door. This utility model, through the inclusion of a connecting component, ensures that when the movable plate impacts the main door panel, the connecting component connects the movable plate and the main door panel, resulting in a stable fit between them. This prevents inertial rebound or weakened impact from causing dust, fumes, etc., to enter, thus improving the safety of personnel inside. To achieve the above-mentioned purpose, the technical solution adopted by this utility model is as follows:

[0007] According to one aspect of the present invention, a lightweight swing door is provided, including a door frame, a main door panel hinged to the door frame, two door handles on the main door panel, multiple ventilation openings on the main door panel arranged vertically, two connecting arms symmetrically provided at the upper end of each ventilation opening, and a movable plate at the lower end of each connecting arm, each connecting arm being L-shaped, and a connecting component cooperating with the main door panel on each movable plate.

[0008] Preferably, the connecting assembly includes an extension plate disposed at the lower end of each movable plate, each extension plate having a connecting rod on the side near the main door panel, the connecting rod being perpendicular to the extension plate, the end of the connecting rod being hinged to a locking block, the main door panel having multiple locking slots, each locking slot having a limiting rod cooperating with the locking block.

[0009] Preferably, the card block is an irregularly shaped part, and a V-shaped groove is formed at the lower end of the card block, with the left and right ends of the V-shaped groove having different lengths.

[0010] Preferably, each of the slots has a groove, and each groove has a limiting spring. Each limiting spring is connected to a limiting rod. The back of the main door panel has multiple sliding grooves, each of which communicates with the groove. Each sliding groove has a sliding rod, and each sliding rod extends into the groove and connects to the limiting rod.

[0011] Preferably, the V-groove is divided into a long side and a short side on both sides, and the length of the long side is greater than the width of the limiting rod.

[0012] Preferably, each of the ventilation openings is provided with a limiting inner frame, and each of the movable plates is provided with a limiting outer frame on the side near the main door panel, and the limiting inner frame and the limiting outer frame cooperate with each other.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. The lightweight swing door described in this utility model, by setting a connecting component, when the movable plate hits the main door plate, the connecting component will connect the movable plate and the main door plate, so that the movable plate and the main door plate are stably attached to each other, avoiding inertial rebound or weakened impact that could lead to the entry of dust, fumes, etc., thereby improving the safety of the personnel inside.

[0015] 2. The lightweight swing door described in this utility model, by setting a limiting inner frame and a limiting outer frame, restricts the movement of the movable plate in the vertical and horizontal directions while the connecting components restrict it. This weakens the force of the shock wave on the movable plate in each direction, prevents the movable plate from deviating, prevents gaps between the movable plate and the main door panel, and ensures the stability of the connecting arm. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a three-dimensional rear view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a single movable plate of this utility model;

[0019] Figure 4 This is a utility model Figure 1 A magnified section view;

[0020] Figure 5 This is a state switching diagram of this utility model;

[0021] In the attached diagram, 1 is the door frame; 2 is the main door panel; 3 is the door handle; 4 is the vent; 5 is the connecting arm; 6 is the movable plate; 7 is the extension plate; 8 is the connecting rod; 9 is the locking block; 10 is the locking groove; 11 is the limiting rod; 12 is the groove; 13 is the limiting spring; 14 is the slide groove; 15 is the slide rod; 16 is the V-groove; 17 is the inner limiting frame; and 18 is the outer limiting frame. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0023] Please see Figures 1 to 5 This utility model provides a lightweight swing valve, the technical solution of which is as follows:

[0024] The device includes a door frame 1, on which a main door panel 2 is hinged. The main door panel 2 has two door handles 3 and multiple ventilation openings 4 arranged vertically. Each ventilation opening 4 has two symmetrical connecting arms 5 at its upper end and a movable plate 6 at its lower end. Each connecting arm 5 is L-shaped and each movable plate 6 has a connecting component that cooperates with the main door panel 2.

[0025] In some work areas with potential explosion hazards, explosion-proof valves, also known as swing valves, are installed. When subjected to the impact force of an external explosion, the impact force will cause multiple movable plates 6, which are hinged to the main door panel 2 via connecting arms 5, to impact and adhere to the main door panel 2, blocking multiple ventilation openings 4. This prevents dust, fumes, and other substances generated by the source of the shock wave from entering the main door panel 2 through the ventilation openings 4. However, the movable plates 6 impact the main door panel 2 at a high speed. Due to inertial rebound or weakening of the impact, gaps may appear between the movable door and the ventilation openings 4. Dust, fumes, and other substances can then enter the main door panel 2 through these gaps, posing a health and safety hazard to the personnel inside.

[0026] By setting up a connecting component, when the movable plate 6 impacts the main door plate 2, the connecting component will connect the movable plate 6 and the main door plate 2, so that the movable plate 6 and the main door plate 2 are stably attached, avoiding inertial rebound or weakened impact that could lead to the entry of dust, fumes, etc., thus improving the safety of the personnel inside.

[0027] The connecting assembly includes an extension plate 7 disposed at the lower end of each movable plate 6. Each extension plate 7 is provided with a connecting rod 8 on the side near the main door panel 2, and the connecting rod 8 is perpendicular to the extension plate 7. A locking block 9 is hinged to the end of the connecting rod 8. Multiple slots 10 are provided on the main door panel 2. Each slot 10 is provided with a limiting rod 11 that cooperates with the locking block 9. The locking block 9 is an irregularly shaped part. A V-shaped groove 16 is provided at the lower end of the locking block 9, and the left and right ends of the V-shaped groove 16 have different lengths.

[0028] When the movable plate 6 impacts the main door panel 2, the connecting rod 8, carrying the locking block 9, enters the locking groove 10. Subsequently, the locking block 9 contacts the limiting rod 11. Since the locking block 9 is hinged to the connecting rod 8, and the center of the locking block 9 is above the limiting rod 11, the locking block 9 first contacts the limiting rod 11. The entire locking block 9 moves along the top surface of the limiting rod 11 to the other side of the limiting rod 11. At this time, the movable plate 6 is in contact with the main door panel 2. When the rebound force or impact force is less than the spring restoring force given by the connecting arm 5, the connecting rod 8 follows and returns to its original position. At this time, the shorter side of the V-groove 16 at the lower end of the locking block 9 locks the side of the limiting rod 11, and the longer side is in contact with the upper surface of the limiting rod 11. That is, the locking block 9 is locked with the limiting rod 11, restricting the movable plate 6 and making it fit against the main door panel 2. This prevents external dust and smoke from entering the main door panel 2 through the gap between the movable plate 6 and the main door panel 2, thus improving safety.

[0029] Each of the slots 10 has a groove 12, and each groove 12 has a limiting spring 13. Each limiting spring 13 is connected to a limiting rod 11. The back of the main door panel 2 has multiple sliding grooves 14, and each sliding groove 14 is connected to the groove 12. Each sliding groove 14 has a sliding rod 15, and each sliding rod 15 extends into the groove 12 and connects to the limiting rod 11.

[0030] Once the shock wave weakens to a certain extent and the dust and smoke dissipate, the movable plate 6 can be reopened. Operators can operate the sliding rod 15 inside the main door plate 2 to squeeze the limiting spring 13. During this process, the limiting rod 11 will gradually disengage from the V-groove 16 of the locking block 9. After the limiting rod 11 is completely disengaged, the movable plate 6 will gradually return to its original state under the elastic force of the connecting arm 5, preparing for the next blast wave. This design allows operators to open the movable plate 6 from inside the main door plate 2 without directly contacting the dust and smoke generated by the shock wave, thus improving safety.

[0031] The V-groove 16 is divided into a long side and a short side on both sides, and the length of the long side is greater than the width of the limiting rod 11. When the locking block 9 is locked with the limiting rod 11, the short side is attached to the side of the limiting rod 11, and the long side is attached to the top surface of the limiting rod 11. Through the interaction of forces, the locking block 9 is restricted. The length of the long side is greater than the width of the limiting rod 11 to prevent the elastic force of the connecting arm 5 from being too large and forcibly breaking the long side, thereby opening the movable plate 6 and improving the fault tolerance rate.

[0032] Each of the ventilation openings 4 is provided with a limiting inner frame 17, and each of the movable plates 6 is provided with a limiting outer frame 18 on the side near the main door panel 2. The limiting inner frame 17 and the limiting outer frame 18 cooperate with each other. Under the action of the shock wave, the movable plate 6 adheres to the main door panel 2, and the limiting outer frame 18 covers the limiting inner frame 17. While the connecting components restrict it, the limiting outer frame 18 and the limiting inner frame 17 restrict each other, restricting the vertical and horizontal movement of the movable plate 6, weakening the force of the shock wave on the movable plate 6 in each direction, preventing the movable plate 6 from shifting, preventing gaps between the movable plate 6 and the main door panel 2, and ensuring the stability of the connecting arm 5.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight, pendulum-type valve, characterized by, Include: Door frame (1), the main door plate (2) is hingedly installed on the door frame (1), two door handles (3) are provided on the main door plate (2), a plurality of ventilation openings (4) are formed on the main door plate (2), and the plurality of ventilation openings (4) are vertically arranged, two connecting arms (5) are symmetrically provided on the upper end of each ventilation opening (4), and a movable plate (6) is provided on the lower end of the two connecting arms (5), the shape of each connecting arm (5) is L-shaped, and a connecting assembly cooperating with the main door plate (2) is provided on each movable plate (6); The connecting assembly comprises an extension plate (7) provided on the lower end of each movable plate (6), a connecting rod (8) is provided on the side of each extension plate (7) close to the main door plate (2), and the connecting rod (8) is perpendicular to the extension plate (7), a clamping block (9) is hingedly connected to the end of the connecting rod (8), a plurality of clamping grooves (10) are formed on the main door plate (2), and a limiting rod (11) cooperating with the clamping block (9) is arranged in each clamping groove (10).

2. A lightweight swing check valve according to claim 1, wherein: The clamping block (9) is a special-shaped part, a V-shaped groove (16) is formed in the lower end of the clamping block (9), and the lengths of the left and right ends of the V-shaped groove (16) are different.

3. A lightweight swing check valve according to claim 1, wherein: A groove (12) is formed in each clamping groove (10), a limiting spring (13) is arranged in each groove (12), and a limiting rod (11) is connected to each limiting spring (13), a plurality of sliding grooves (14) are formed on the back of the main door plate (2), each sliding groove (14) is communicated with the groove (12), and a sliding rod (15) is arranged in each sliding groove (14), and each sliding rod (15) extends into the groove (12) and is connected with the limiting rod (11).

4. A lightweight swing check valve according to claim 2, wherein: The two sides of the V-shaped groove (16) are divided into a long side and a short side, and the length of the long side is greater than the width of the limiting rod (11).

5. A lightweight swing check valve according to claim 1 wherein: A limiting inner frame (17) is arranged on each ventilation opening (4), and a limiting outer frame (18) is arranged on the side of each movable plate (6) close to the main door plate (2), and the limiting inner frame (17) and the limiting outer frame (18) cooperate with each other.

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