Limiting mechanism of anti-explosion valve

Abstract

The utility model discloses a limit mechanism of an explosion-proof valve, and particularly relates to the technical field of explosion-proof valves, the limit mechanism comprises a door plate, a sliding table and a limit seat, one side of the door plate is provided with an air duct, the top end of one side of the door plate is provided with a top frame, the inner side of the top frame is movably provided with a connecting rod, and the bottom end of the connecting rod is provided with a cover plate. A limiting assembly is arranged on one side of the cover plate and comprises a limiting rod, a sliding table, a limiting base and a spring, the sliding table is arranged on one side of the cover plate, the limiting rod is installed on one side of the sliding table, and the limiting base is arranged on the outer side of the limiting rod. The limiting rod and the sliding table are arranged, the sliding table at the front end of the limiting rod makes contact with the back face of the cover plate, the tail end of the limiting rod makes contact with the spring in the limiting base, when wind power is small, the limiting rod abuts against the back position of the cover plate due to the influence of the spring, the cover plate can be prevented from being closed, and protection performance is achieved when the limiting mechanism of the anti-explosion valve is used.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof wave valves, in particular to a limiting mechanism of explosion-proof wave valves. Background Art

[0002] The explosion-proof valve refers to the protective ventilation equipment used in civil air defense projects to ensure uninterrupted ventilation in the project in the event of an air raid. It is generally used in combination with a diffusion chamber. It is divided into two types: pendulum type and hose type according to different materials. The main body is a steel structure. It will automatically close when it is hit by a shock wave to protect the ventilation equipment inside the project from being damaged. This device is the limit mechanism of the explosion-proof valve;

[0003] When the swing-type explosion-proof valve is in use, the cover is hung on the outside of the door body and is installed movably. Under the influence of wind, the cover is forced to contact the door body, blocking the channel on the surface of the door body. If the wind is small, the cover contacts the door body, which will affect the overall ventilation.

[0004] Therefore, a limiting mechanism of an explosion-proof wave valve is needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a limit mechanism for an explosion-proof valve, so as to solve the problem that the auxiliary effect of the limit of the explosion-proof valve is poor in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a limiting mechanism of an explosion-proof wave valve, comprising a door panel, a sliding platform and a limiting seat, wherein an air duct is arranged on one side of the door panel, a top frame is installed at the top end of one side of the door panel, a connecting rod is movably installed on the inner side of the top frame, a cover plate is installed at the bottom end of the connecting rod, a limiting assembly is arranged on one side of the cover plate, the limiting assembly comprises a limiting rod, a sliding platform, a limiting seat and a spring, a sliding platform is arranged on one side of the cover plate, a limiting rod is installed on one side of the sliding platform, a limiting seat is arranged on the outer side of the limiting rod, a first limiting plate is installed on one side of the limiting rod, a rubber ring is installed on the outer side of the limiting rod on one side of the first limiting plate, a first positioning platform is fixed on the other side of the first limiting plate, and a spring is arranged on the outer side of the first positioning platform.

[0007] Preferably, an air hole is provided on one side of the bottom end of the limiting seat.

[0008] Preferably, a tail stage is fixed to one side of the limiting seat, an adjusting rod is arranged inside the tail stage, and a knob is installed on one side of the adjusting rod.

[0009] Preferably, the other side of the adjusting rod extends to the inside of the limiting seat, a second limiting plate is installed on the other side of the adjusting rod, and a second positioning platform is fixed to one side of the second limiting plate.

[0010] Preferably, the interior of the tail stage is provided with an internal thread, and the surface of the adjusting rod is provided with an external thread.

[0011] Preferably, a mounting seat is installed at the bottom end of the other side of the door panel, an adjustment platform is installed on one side of the mounting seat, and a ball core is arranged inside the adjustment platform.

[0012] Preferably, a connecting block is installed on one side of the ball core, and one side of the connecting block is fixedly connected to the bottom end of the limiting seat.

[0013] Preferably, a fixing platform is fixed to the bottom end of the adjusting platform, a fixing bolt is arranged inside the fixing platform, and a top end of the fixing bolt extends to the inside of the adjusting platform.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by setting a limit rod and a slide, the slide at the front end of the limit rod contacts the back of the cover plate, and the rear end contacts the spring inside the limit seat. When the wind force is small, the limit rod is affected by the spring and abuts against the back of the cover plate, which can prevent the cover plate from closing, thereby realizing the protectiveness of the limit mechanism of the explosion-proof valve when in use;

[0015] By providing an adjusting rod, the adjusting rod is located at the tail end of the limit seat and is connected with the tail stage thread. When the adjusting rod is caught, the adjusting rod cooperates with the tail stage thread to push the second limit plate inside the limit seat to move. The second limit plate cooperates with the first limit plate to compress the spring, thereby adjusting the elastic force of the spring when in use, thereby realizing the adjustability of the limit force of the limit mechanism of the explosion-proof wave valve;

[0016] By providing an adjustment platform and a ball core, the ball core on the bottom side of the limit seat is movably connected to the adjustment platform. After the fixing bolt on the bottom side of the adjustment platform is loosened, the use angle position of the limit seat can be adjusted with the help of the cooperation of the ball core and the adjustment platform, thereby realizing the adjustability of the use position of the limit mechanism of the explosion-proof wave valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the adjustment rod of the utility model;

[0020] Figure 4 It is a schematic diagram of the front cross-sectional structure of the adjustment platform of the utility model.

[0021] In the figure: 1. door panel; 2. air duct; 3. top frame; 4. connecting rod; 5. cover plate; 6. limit rod; 7. slide; 8. limit seat; 9. rubber ring; 10. first limit plate; 11. first positioning platform; 12. spring; 13. air hole; 14. tail platform; 15. adjustment rod; 16. knob; 17. second limit plate; 18. second positioning platform; 19. mounting seat; 20. adjustment platform; 21. ball core; 22. connecting block; 23. fixing platform; 24. fixing bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides an embodiment: a limiting mechanism of an explosion-proof wave valve, including a door panel 1, a slide 7 and a limiting seat 8, a duct 2 is arranged on one side of the door panel 1, a top frame 3 is installed on the top of one side of the door panel 1, a connecting rod 4 is movably installed on the inner side of the top frame 3, a cover plate 5 is installed on the bottom end of the connecting rod 4, a limiting component is arranged on one side of the cover plate 5, the limiting component includes a limiting rod 6, a slide 7, a limiting seat 8 and a spring 12, a slide 7 is arranged on one side of the cover plate 5, a limiting rod 6 is installed on one side of the slide 7, a limiting seat 8 is arranged on the outer side of the limiting rod 6, a first limiting plate 10 is installed on one side of the limiting rod 6, a rubber ring 9 is installed on the outer side of the limiting rod 6 on one side of the first limiting plate 10, a first positioning platform 11 is fixed on the other side of the first limiting plate 10, a spring 12 is arranged on the outer side of the first positioning platform 11, and an air hole 13 is arranged on one side of the bottom end of the limiting seat 8;

[0024] Specifically, Figure 1 and Figure 2 As shown, when in use, the slide 7 at the front end of the limit rod 6 is in direct contact with the back of the cover plate 5. When the cover plate 5 is affected by the wind and contacts the air duct 2, pressure can be applied to the limit rod 6. When the wind force is strong, the limit rod 6 can be pushed and the spring 12 at the rear end of the limit rod 6 can be pressed to complete the closing operation. On the contrary, when the wind force is weak, the pressure is difficult to press the spring 12, which can prevent the closing operation of the cover plate 5.

[0025] A tail stage 14 is fixed to one side of the limiting seat 8, an adjusting rod 15 is arranged inside the tail stage 14, an internal thread is arranged inside the tail stage 14, an external thread is arranged on the surface of the adjusting rod 15, a knob 16 is installed on one side of the adjusting rod 15, the other side of the adjusting rod 15 extends to the inside of the limiting seat 8, a second limiting plate 17 is installed on the other side of the adjusting rod 15, and a second positioning stage 18 is fixed to one side of the second limiting plate 17;

[0026] Specifically, Figure 1 and Figure 3 As shown, when in use, the spring 12 is located between the first limit plate 10 and the second limit plate 17, and the adjusting rod 15 at the tail end of the limit seat 8 is rotated. The adjusting rod 15 cooperates with the tail stage 14 to push the second limit plate 17 to move, and the second limit plate 17 cooperates with the first limit plate 10 to assist in adjusting the elastic force of the spring 12 when in use;

[0027] A mounting seat 19 is installed at the bottom end of the other side of the door panel 1, an adjusting platform 20 is installed on one side of the mounting seat 19, a ball core 21 is arranged inside the adjusting platform 20, a connecting block 22 is installed on one side of the ball core 21, one side of the connecting block 22 is fixedly connected to the bottom end of the limiting seat 8, a fixing platform 23 is fixed to the bottom end of the adjusting platform 20, a fixing bolt 24 is arranged inside the fixing platform 23, and the top end of the fixing bolt 24 extends to the inside of the adjusting platform 20;

[0028] Specifically, Figure 1 and Figure 4 As shown, when in use, the limit seat 8 is connected to the ball core 21 inside the adjustment platform 20 through the connecting block 22. After the fixing bolt 24 on the bottom side of the adjustment platform 20 is loosened, the use position and angle of the limit seat 8 are adjusted with the help of the ball core 21 and the adjustment platform 20, so as to adjust the position direction of the limit rod 6 at the front end of the limit seat 8, and assist the limit rod 6 to better cooperate with the cover plate 5.

[0029] Working principle: When in use, the cover plate 5 is movably mounted on the front end of the door panel 1 for use, and the limit seat 8 is mounted on the back of the door panel 1 for use with the assistance of the mounting seat 19. The fixing bolt 24 on the bottom side of the adjustment platform 20 is loosened, and the angle and position of the limit seat 8 can be manually adjusted under the cooperation of the ball core 21 and the adjustment platform 20. The limit rod 6 at the front end of the auxiliary limit seat 8 is placed in a natural hanging state. The back of the cover plate 5 and the sliding table 7 at the front end of the limit rod 6 are in contact with the back of the cover plate 5. When the cover plate 5 is affected by wind pressure and approaches the door panel 1, with the help of the limit rod 6, the sliding table 7 at the front end of the limit rod 6 is in contact with the back of the cover plate 5. The positioning rod 6 can compress the spring 12 inside the limiting seat 8. If the wind force is small and the pressure is less than the elastic force of the spring 12, the cover plate 5 can be prevented from approaching the air duct 2. On the contrary, when the wind force is large, the cover plate 5 can push the limiting rod 6 to move and cover the air duct 2 for blocking. The adjusting rod 15 at the tail end of the limiting seat 8 is rotated. The adjusting rod 15 and the tail platform 14 can threadably cooperate to push the second limiting plate 17 inside the limiting seat 8. The spring 12 inside the limiting seat 8 is compressed by the second limiting plate 17, which can assist in adjusting the elastic force used by the spring 12.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A limit mechanism for an explosion-proof valve, comprising a door panel (1), a slide (7) and a limit seat (8), characterized in that: An air duct (2) is provided on one side of the door panel (1), a top frame (3) is installed on the top of one side of the door panel (1), a connecting rod (4) is movably installed on the inner side of the top frame (3), a cover plate (5) is installed on the bottom end of the connecting rod (4), and a limit position assembly is provided on one side of the cover plate (5); The limit assembly comprises a limit rod (6), a slide (7), a limit seat (8) and a spring (12); a slide (7) is arranged on one side of the cover plate (5); a limit rod (6) is installed on one side of the slide (7); a limit seat (8) is arranged on the outer side of the limit rod (6); a first limit plate (10) is installed on one side of the limit rod (6); a rubber ring (9) is installed on the outer side of the limit rod (6) on one side of the first limit plate (10); a first positioning platform (11) is fixed on the other side of the first limit plate (10); and a spring (12) is arranged on the outer side of the first positioning platform (11).

2. The limiting mechanism of the explosion-proof valve according to claim 1 is characterized in that: An air hole (13) is provided on one side of the bottom end of the limiting seat (8).

3. The limiting mechanism of the explosion-proof valve according to claim 1 is characterized in that: A tail stage (14) is fixed to one side of the position limiting seat (8), an adjusting rod (15) is arranged inside the tail stage (14), and a knob (16) is installed on one side of the adjusting rod (15).

4. The limiting mechanism of the explosion-proof valve according to claim 3 is characterized in that: The other side of the adjusting rod (15) extends to the interior of the limiting seat (8), a second limiting plate (17) is installed on the other side of the adjusting rod (15), and a second positioning platform (18) is fixed on one side of the second limiting plate (17).

5. The limiting mechanism of the explosion-proof valve according to claim 3 is characterized in that: The interior of the tail stage (14) is provided with an internal thread, and the surface of the adjusting rod (15) is provided with an external thread.

6. The limiting mechanism of the explosion-proof valve according to claim 1, characterized in that: A mounting seat (19) is installed at the bottom end of the other side of the door panel (1), an adjustment platform (20) is installed on one side of the mounting seat (19), and a ball core (21) is arranged inside the adjustment platform (20).

7. The limiting mechanism of the explosion-proof valve according to claim 6, characterized in that: A connecting block (22) is installed on one side of the ball core (21), and one side of the connecting block (22) is fixedly connected to the bottom end of the limiting seat (8).

8. The limiting mechanism of the explosion-proof valve according to claim 6, characterized in that: A fixing platform (23) is fixed to the bottom end of the adjusting platform (20), a fixing bolt (24) is arranged inside the fixing platform (23), and the top end of the fixing bolt (24) extends to the inside of the adjusting platform (20).

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