A type of explosion-proof door with good locking effect

Abstract

This application relates to an explosion-proof door with good locking effect, comprising a door panel and a door frame. A rotating ring of the door panel is connected to the door frame. A cavity is formed inside the door panel, and a locking assembly is disposed within the cavity. The locking assembly includes four push rods, four connecting rods, a screw, and a rotating sleeve. The four push rods correspond to the four side walls of the door panel and slide along the direction close to or away from the inner side wall of the cavity. The screw is rotatably connected to the cavity, and the rotating sleeve is threadedly connected to the screw. The four connecting rods correspond to the four push rods, with one end rotatably connected to the push rod and the other end rotatably connected to the rotating sleeve. A limiting post is provided on the push rod for passing through the door panel, and a limiting groove is formed on the door frame for engaging the limiting post. When the door panel is locked, the connecting rod and the rotating sleeve are located in the same plane. This application improves the locking effect of the explosion-proof door.

Description

Technical Field

[0001] This application relates to the field of explosion-proof doors, and in particular to an explosion-proof door with good locking effect. Background Technology

[0002] Explosion-proof doors are explosion-proof protective devices designed to resist accidental explosions of external equipment in industrial buildings, ensuring the safety of personnel and the integrity of internal equipment, protecting them from the shockwaves of the explosion, and effectively preventing the continuation of the explosion's harmful effects.

[0003] Currently, Chinese utility model patent CN222526141U discloses a rack-and-pinion movable explosion-proof door, including a door body. A rotating gear is movably connected to the middle of the rear wall of the door body. An upper horizontal moving rack is provided above the rotating gear, and a lower horizontal moving rack is provided below the rotating gear. The teeth on the bottom surface of the upper horizontal moving rack mesh with the rotating gear, and the teeth on the top surface of the lower horizontal moving rack mesh with the rotating gear. A right vertical plate is fixed to the right end of the upper horizontal moving rack, and a left vertical plate is fixed to the left end of the lower horizontal moving rack. Multiple transverse limiting posts are fixed on the outer walls of both the left and right vertical plates. This utility model reduces the deformation of the explosion-proof door.

[0004] When an explosion-proof door is subjected to an impact, the door panel will vibrate, which may cause the moving rack to rotate relative to the rotating gear, or even cause the limit post to detach from the door frame. Utility Model Content

[0005] In order to improve the locking effect of explosion-proof doors, this application provides an explosion-proof door with good locking effect.

[0006] This application provides an explosion-proof door with good locking effect, which adopts the following technical solution:

[0007] An explosion-proof door with good locking effect includes a door panel and a door frame. The door panel is rotatably connected to the door frame. A cavity is formed inside the door panel, and a locking assembly is provided in the cavity. The locking assembly includes four push rods, four connecting rods, a screw, and a rotating sleeve. The four push rods correspond to the four side walls of the door panel. The push rods slide along the direction close to or away from the inner side wall of the cavity and are connected to the cavity. The screw is rotatably connected to the cavity, and the rotating sleeve is threadedly connected to the screw. The four connecting rods correspond to the four push rods. One end of the connecting rod is rotatably connected to the push rod, and the other end of the connecting rod is rotatably connected to the rotating sleeve. A limiting post is provided on the push rod for passing through the door panel. A limiting groove is formed on the door frame for engaging the limiting post. When the door panel is locked, the connecting rod and the rotating sleeve are located in the same plane.

[0008] By adopting the above technical solution, when the explosion-proof door needs to be closed, the operator can first assemble the door panel with the door frame, and then rotate the screw. The screw drives the rotating sleeve to move along the thickness direction of the door panel. The movement of the rotating sleeve drives the connecting rod to rotate. The connecting rod drives the push rod to move towards the inner side wall of the cavity until the limiting post is engaged in the limiting groove of the door frame. At this time, the connecting rod and the rotating sleeve are on the same plane, and the connecting rod is at the dead point position. At this time, the effective rotational torque of the connecting rod is zero, which reduces the occurrence of the limiting post disengaging from the limiting groove during the vibration of the explosion-proof door.

[0009] Optionally, a fitting sleeve is provided on the inner sidewall of the cavity, and the limiting post is slidably connected to the fitting sleeve along the sliding direction of the push rod.

[0010] By adopting the above technical solution, the movement of the limiting post is guided by the sleeve, and the limiting post is restricted from detaching from the sleeve, thus better guiding the limiting post into the limiting groove, resulting in a more reasonable structure.

[0011] Optionally, the door panel is provided with a limiting component for restricting the movement of the push rod. The limiting component includes four limiting blocks, a push plate, and a limiting spring. The push rod has a limiting groove. The push plate slides along the thickness direction of the door panel and is connected to the door panel. The four limiting blocks correspond to the four push rods. The limiting blocks are disposed on the push plate. When the limiting post is located in the limiting groove, the limiting block is located in the limiting groove.

[0012] By adopting the above technical solution, when the limiting post is located in the limiting groove, the connecting rod and the rotating sleeve are on the same plane. At this time, the limiting spring will drive the push plate to move in the direction of the push rod until the limiting block is located in the limiting groove, reducing the possibility of workers accidentally touching the screw and causing the limiting post groove to move away from the limiting groove.

[0013] Optionally, the limiting block is provided with a guide slope to facilitate the movement of the push plate away from the limiting groove.

[0014] By adopting the above technical solution, when the limiting post is engaged with the limiting groove, the push rod moves. At this time, the guide slope abuts against the push rod, and the guide slope guides the push plate to overcome the elastic force of the limiting spring and move away from the limiting groove until the limiting block is aligned with the limiting groove. The limiting spring drives the push plate to move towards the push rod until the limiting block is engaged in the limiting groove. When the limiting block is in the limiting groove, the push rod cannot move towards the inner side wall of the cavity, ensuring that the limiting post is engaged in the limiting groove.

[0015] Optionally, the sidewall of the door panel is provided with a multi-layer elastic rubber buffer pad for shock absorption.

[0016] By adopting the above technical solution, when the explosion-proof door is closed, the multi-layer elastic rubber buffer pad is located between the door panel and the door frame. When the explosion-proof door encounters a sudden situation that causes vibration, the multi-layer elastic rubber buffer pad can reduce the hard impact between the door panel and the door frame, thereby reducing the wear and tear on the door panel and the door frame.

[0017] Optionally, the door panel is provided with sound-absorbing cotton for noise absorption.

[0018] By adopting the above technical solutions, sound insulation cotton is usually made of materials such as polyester fiber, glass fiber or rock wool, which contains a large number of interconnected tiny pores. When sound waves enter these pores, they will repeatedly rub and collide with the fibers, converting sound energy into heat energy and consuming it.

[0019] Optionally, the cavity is provided with a sliding strip, the length direction of which is parallel to the thickness direction of the door panel, and the rotating sleeve is slidably connected to the sliding strip.

[0020] By adopting the above technical solution, the rotating sleeve is slidably connected to the sliding strip, so that the rotating sleeve slides along the length direction of the sliding strip, thereby reducing the relative rotation of the rotating sleeve with the screw, and the structure is more reasonable.

[0021] Optionally, the push plate is provided with a grip for easy handling by the user.

[0022] By adopting the above technical solution, when the originally sealed door panel is opened, the staff can hold the handle to drive the push plate to move against the elastic force of the limiting spring, so that the limiting block is disengaged from the limiting groove.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the door panel needs to seal the door frame, align the limiting post with the limiting groove, rotate the screw to drive the rotating sleeve to move, so that the connecting rod and the rotating sleeve are on the same plane. At this time, the limiting post is located in the limiting groove, and the connecting rod is at the dead point position, which reduces the limit post from leaving the limiting groove when the explosion-proof door vibrates.

[0025] 2. When the limiting post is engaged with the limiting groove, the limiting block is located inside the limiting groove, thereby reducing the risk of the limiting post disengaging from the limiting groove due to accidental contact with the screw by the operator;

[0026] 3. The side walls of the door panel are equipped with multiple layers of elastic rubber buffer pads, thereby extending the service life of the door panel and door frame. The sound insulation cotton reduces noise passing through the door panel when the surrounding environment explodes. Attached Figure Description

[0027] Figure 1 It is an explosion-proof door with good locking effect.

[0028] Figure 2 yes Figure 1 A cross-sectional view of the middle door panel, used to show the locking assembly.

[0029] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle limiting component.

[0030] Reference numerals: 1. Door panel; 11. Cavity; 12. Sliding strip; 2. Door frame; 3. Locking assembly; 31. Push rod; 311. Limiting groove; 32. Connecting rod; 33. Screw; 34. Rotating sleeve; 35. Turning handle; 36. Limiting post; 37. Limiting groove; 4. Mating sleeve; 5. Multi-layer elastic rubber buffer pad; 6. Receiving groove; 61. Sound insulation cotton; 7. Limiting component; 71. Limiting block; 72. Push plate; 73. Limiting spring; 74. Guide slope; 75. Handle. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail.

[0032] This application discloses an explosion-proof door with good locking effect. (Refer to...) Figure 1 and Figure 2 An explosion-proof door with good locking effect includes a door panel 1 and a door frame 2. The door panel 1 is rotatably connected to the door frame 2. A cavity 11 is opened inside the door panel 1. A locking assembly 3 is installed in the cavity 11. The locking assembly 3 includes four push rods 31, four connecting rods 32, a screw 33, and a rotating sleeve 34. The length direction of the screw 33 is parallel to the thickness direction of the door panel 1. One end of the screw 33 is rotatably connected to the cavity 11. The other end of the screw 33 passes through the door panel 1 and is fixedly provided with a handle 35. Four sliding strips 12 are provided in the cavity 11. The four sliding strips 12 are evenly distributed circumferentially along the axis of the screw 33. The length direction of the sliding strips 12 is parallel to the thickness direction of the door panel 1. The rotating sleeve 34 is coaxially arranged with the screw 33 and threadedly connected to the screw 33. The rotating sleeve 34 slides along the length direction of the sliding strips 12 and is connected to the sliding strips 12.

[0033] Reference Figure 1 and Figure 2Four push rods 31 correspond to the four inner walls of the cavity 11. The length direction of the push rods 31 is parallel to the length direction of the corresponding inner wall of the cavity 11. The push rods 31 slide and connect to the cavity 11 along the length direction close to or away from the corresponding inner wall of the cavity 11. Four connecting rods 32 correspond one-to-one with the four push rods 31. One end of the connecting rod 32 is rotatably connected to the push rod 31, and the other end of the connecting rod 32 is rotatably connected to the rotating sleeve 34. Several limiting posts 36 are fixedly provided on the end of the push rod 31 away from the screw 33. The limiting posts 36 penetrate the door panel 1. The inner wall of the door frame 2 is provided with a limiting groove 37 for engaging with the limiting posts 36. When the connecting rod 32 and the rotating sleeve 34 are on the same plane, that is, when the connecting rod 32 is at the dead point position, the limiting post 36 remains engaged in the limiting groove 37.

[0034] Reference Figure 2 and Figure 3 The inner wall of the cavity 11 is fixedly provided with several mating sleeves 4, which correspond to several limiting posts 36. The length direction of the mating sleeves 4 is parallel to the length direction of the limiting posts 36. The limiting posts 36 are slidably connected in the mating sleeves 4. The outer wall of the door panel 1 is also fixedly provided with multiple layers of elastic rubber buffer pads 5. The cavity 11 of the door panel 1 is also provided with several receiving grooves 6, which are used to place sound insulation cotton 61 for absorbing noise.

[0035] Reference Figure 2 and Figure 3 The door panel 1 is provided with a limiting member 7 that restricts the movement of the push rod 31. The limiting member 7 includes four limiting blocks 71, a push plate 72, and four limiting springs 73. The push plate 72 is located on one side of the handle 35 and slides along the thickness direction of the door panel 1. The push rod 31 has a limiting groove 311 on the side facing the push plate 72. The limiting groove 311 extends along the thickness direction of the door panel 1. The four limiting blocks 71 correspond to the four push rods 31 and are fixedly mounted on the push plate 72. Above, the limiting block 71 passes through the door panel 1 and enters the cavity 11. The end of the limiting block 71 facing the limiting groove 311 and the end of the limiting block 71 facing the screw 33 are provided with guide slopes 74. Four limiting springs 73 are evenly distributed on the push plate 72. The length direction of the limiting springs 73 is parallel to the sliding direction of the push plate 72. One end of the limiting spring 73 is fixedly set on the push plate 72, and the other end of the limiting spring 73 is fixedly set on the door panel 1. The push plate 72 is provided with a handle 75 for easy gripping.

[0036] The implementation principle of an explosion-proof door with good locking effect according to an embodiment of this application is as follows: When the explosion-proof door needs to be closed, the operator can rotate the door panel 1 so that the door panel 1 is located inside the door frame 2, and the elastic rubber buffer pads abut against the door frame 2. Then the operator can rotate the handle 35, the handle 35 drives the screw 33 to rotate, the screw 33 drives the rotating sleeve 34 to move, the rotating sleeve 34 drives the connecting rod 32 to rotate, and the connecting rod 32 drives the push rod 31 to move until the limiting post 36 on the push rod 31 is engaged in the limiting groove 37 at the door, until the connecting rod 32 and the rotating sleeve 34 are in the same position. At this time, the connecting rod 32 is in the dead point position, which reduces the movement of the push rod 31 when the explosion-proof door vibrates. When the connecting rod 32 is in the dead point position, the limiting block 71 enters the limiting groove 311 under the action of the limiting spring 73, which reduces the rotation of the handle 35 due to accidental contact and improves the reliability of the explosion-proof door.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A type of explosion-proof door with good locking effect, characterized in that: Includes a door panel (1) and a door frame (2). The door panel (1) is rotatably connected to the door frame (2). A cavity (11) is provided in the door panel (1). A locking assembly (3) is provided in the cavity (11). The locking assembly (3) includes four push rods (31), four connecting rods (32), a screw (33), and a rotating sleeve (34). The four push rods (31) correspond to the four side walls of the door panel (1). The push rods (31) slide along the direction close to or away from the inner side wall of the cavity (11) and are connected to the cavity (11). The screw (33) is rotatably connected to the cavity (11). 1) Inside, the rotating sleeve (34) is threaded to the screw (33), and the four connecting rods (32) correspond to the four push rods (31). One end of the connecting rod (32) is rotatably connected to the push rod (31), and the other end of the connecting rod (32) is rotatably connected to the rotating sleeve (34). The push rod (31) is provided with a limiting post (36) for passing through the door panel (1), and the door frame (2) is provided with a limiting groove (37) for engaging the limiting post (36). When the door panel (1) is locked, the connecting rod (32) and the rotating sleeve (34) are located in the same plane.

2. The explosion door with good locking effect according to claim 1, characterized in that: The inner wall of the cavity (11) is provided with a fitting sleeve (4), and the limiting post (36) slides and connects to the fitting sleeve (4) along the sliding direction of the push rod (31).

3. The explosion-proof door with good locking effect according to claim 1, characterized in that: The door panel (1) is provided with a limiting member (7) for limiting the movement of the push rod (31). The limiting member (7) includes four limiting blocks (71), a push plate (72) and a limiting spring (73). The push rod (31) is provided with a limiting groove (311). The push plate (72) slides along the thickness direction of the door panel (1) and is connected to the door panel (1). The four limiting blocks (71) correspond to the four push rods (31). The limiting blocks (71) are provided on the push plate (72). When the limiting post (36) is located in the limiting groove (37), the limiting block (71) is located in the limiting groove (311).

4. The explosion-proof door with good locking effect according to claim 3, characterized in that: The limiting block (71) has a guide slope (74) that facilitates the movement of the push plate (72) away from the limiting groove (311).

5. The explosion-proof door with good locking effect according to claim 1, characterized in that: The side wall of the door panel (1) is provided with a multi-layer elastic rubber buffer pad (5) for shock absorption.

6. The explosion-proof door with good locking effect according to claim 1, characterized in that: The door panel (1) is provided with sound insulation cotton (61) for absorbing noise.

7. The explosion-proof door with good locking effect according to claim 1, characterized in that: The cavity (11) is provided with a sliding strip (12), the length direction of the sliding strip (12) is parallel to the thickness direction of the door panel (1), and the rotating sleeve (34) is slidably connected to the sliding strip (12).

8. The explosion-proof door with good locking effect according to claim 3, characterized in that: The push plate (72) is provided with a handle (75) for easy gripping by the user.

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