CN215169456U

CN215169456U - Novel explosion-proof overpressure exhaust valve

Info

Publication number: CN215169456U
Application number: CN202120638466.XU
Authority: CN
Inventors: 毛振朋; 彭志强; 刘参军; 魏二华; 张红溥; 郭丽颖; 牛艳; 侯志强
Original assignee: Henan Zhengtong Civil Air Defense Protection Equipment Co ltd
Current assignee: Henan Zhengtong Civil Air Defense Protection Equipment Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-12-14
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a novel explosion-proof overpressure exhaust valve device, which solves the problem that the overpressure exhaust valve is deformed due to air pressure impact in the prior art; the technical scheme includes that the device comprises a vertical cylindrical shell, openings are formed in the upper end and the lower end of the shell, a pressing plate capable of moving up and down is placed in the shell, the pressing plate can seal the opening above the shell when moving to the upper end of the shell, a plurality of connecting rods are hinged to the lower end face of the pressing plate, a baffle capable of moving up and down is placed in the shell below the pressing plate, the baffle can move down to seal the opening below the shell, first telescopic rods with the same number as the connecting rods are hinged to the upper end face of the baffle, the other ends of the first telescopic rods correspond to and are hinged to the other ends of the connecting rods one by one, hinged shafts of the first telescopic rods and the connecting rods can only move left and right in the horizontal direction and can reset, and the baffle can reset after moving upwards under an external force; the utility model discloses the design is novel, and the structure is ingenious, and the practicality is strong, can realize preventing that atmospheric pressure from strikeing and leading to the clamp plate to warp and lose.

Description

Novel explosion-proof overpressure exhaust valve

Technical Field

The utility model belongs to the technical field of civil air defense engineering apparatus technique and specifically relates to a novel explosion-proof superpressure exhaust valve.

Background

At present, an explosion-proof overpressure exhaust valve is an important device of an air-proof basement, is arranged at various air-free parts of a civil air defense project and is used for preventing or weakening the effect of weapon killing and destruction from entering the interior of the project, equipment for ensuring the safety of the interior of the project and playing a role in preventing external chemical toxic gas in order to ensure that the interior of the project has certain overpressure, namely the pressure of gas in the interior of the project is greater than the pressure of atmospheric air outside the project; the anti-shock wave structure has the capability of protecting the engineering exterior from shock waves, so that the engineering exterior can be ensured to have certain anti-shock wave capability, and meanwhile, the engineering interior can also have certain overpressure exhaust capability.

When the overpressure exhaust valve is used, the overpressure exhaust valve is often subjected to violent impact of indoor high-pressure airflow, the conventional overpressure exhaust valve does not have an impact resistance effect, the overpressure exhaust valve is easy to deform due to violent air pressure impact, and the leakage phenomenon occurs.

Disclosure of Invention

To the above-mentioned condition, for solving the problem that exists among the prior art, the utility model aims at providing a novel explosion-proof superpressure exhaust valve device, solve among the prior art atmospheric pressure and strike and lead to superpressure exhaust valve to warp, appear the problem of leakage phenomenon.

The technical scheme for solving the problem is as follows: the utility model comprises a vertically placed cylindrical shell, the axis positions of the upper and lower ends of the shell are both provided with a circular opening, a circular pressing plate is horizontally placed in the shell, the axis of the pressing plate coincides with the axis of the shell, the pressing plate can move up and down in the shell, the opening above the shell can be sealed when the pressing plate moves to the upper end of the shell, and the lower end surface of the pressing plate is hinged with a plurality of connecting rods;

placed a horizontally circular baffle in the casing of clamp plate below, the axis and the coincidence of casing axis of baffle, the baffle can reciprocate in the casing, the opening of the below of sealed casing can be followed when the baffle moves down the lower extreme of casing, and articulated on the baffle up end have the first telescopic link with the same quantity of connecting rod, the other end of first telescopic link and the other end one-to-one of connecting rod are articulated, the articulated shaft of first telescopic link and connecting rod can only be followed the horizontal direction and removed, and the articulated shaft can reset to keeping away from casing lateral wall direction, when reciprocating the clamp plate, the baffle can be along with the clamp plate removes to the opposite direction of clamp plate moving direction, when the baffle receives external force rebound, the baffle can reset.

The bottom end of the shell is fixedly provided with a flange which is coaxially arranged with the shell, a plurality of through holes are uniformly distributed on the periphery of the flange, and the through holes are positioned on the outer side of the shell.

The casing top be fixed with a backup pad, set up a plurality of logical grooves that communicate with casing upper end opening in the backup pad, and the backup pad is installed a thread bush at the logical inslot internal rotation on the axis position of casing, the axis and the casing axis coincidence of thread bush, the thread bush can be rotatory around self axis, be equipped with a vertical screw rod of placing in the thread bush, screw rod and thread bush pass through screw-thread fit, it can make the screw rod reciprocate to rotate the thread bush, the screw rod bottom mounting has a conical connecting plate, the up end of connecting plate is less than down the terminal surface, and the upper end and the screw rod fixed connection of connecting plate, the lower extreme and the clamp plate of connecting plate are connected.

An annular sealing gasket is fixed on the upper end face of the pressing plate, and the axis of the sealing gasket is overlapped with the axis of the shell.

The inside circumference equipartition of casing be fixed with a plurality of slip tables, a horizontally spout has all been seted up on the slip table, the axis of spout intersects a bit and the nodical axis that is located the casing, the equal slidable mounting of articulated shaft of connecting rod and first telescopic link is in the spout, the spout can restrict the articulated shaft and only remove along the horizontal direction, a first pressure spring has all been placed in the spout, first pressure spring one end is fixed on the casing lateral wall, the other end contacts with the articulated shaft of connecting rod and first telescopic link.

The utility model discloses a sealed casing, including clamp plate and baffle, the clamp plate is connected with the clamp plate, the clamp plate is connected with the baffle, when the distance between baffle and the clamp plate changes, the second telescopic link can stretch out and draw back, second telescopic link outside cover has the second pressure spring, clamp plate and baffle are connected to the second pressure spring, when the baffle atress upwards moves, the baffle compresses the second pressure spring, first and second telescopic link shrink, after the baffle atress was finished, the second pressure spring can extend first telescopic link, push up the baffle to sealed casing lower extreme open-ended position simultaneously.

The utility model discloses think about novelty, the structure is ingenious, and the practicality is strong, can realize preventing that atmospheric pressure from strikeing and leading to the clamp plate to warp and decrease, can turn into the impact force sealed casing upper end open-ended pressure simultaneously.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is a diagram illustrating the opening state of the shutter according to the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 2 according to the present invention.

Fig. 5 is an axonometric view of the threaded sleeve of the present invention.

Fig. 6 is a combined structure diagram of the casing, the flange plate and the through hole of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be seen from fig. 1 to 6, the utility model comprises a vertically placed cylindrical casing 1, the axial positions of the upper and lower ends of the casing 1 are both provided with circular openings, a circular pressing plate 2 is horizontally placed in the casing 1, the axial of the pressing plate 2 coincides with the axial of the casing 1, the pressing plate 2 can move up and down in the casing 1, the pressing plate 2 can seal the opening above the casing 1 when moving to the upper end of the casing 1, and the lower end surface of the pressing plate 2 is hinged with a plurality of connecting rods 3;

a horizontally circular baffle 4 has been placed in casing 1 of clamp plate 2 below, the axis of

baffle

4 and 1 axis coincidence of casing, baffle 4 can reciprocate in casing 1, the opening of the below of ability sealed casing 1 when baffle 4 downstream arrives the lower extreme of casing 1, and articulated on the baffle 4 up end have with connecting rod 3 the same quantity first telescopic link 5, the other end of first telescopic link 5 and connecting rod 3's the other end one-to-one and articulated, the articulated shaft of first telescopic link 5 and connecting rod 3 only can be followed the horizontal direction and removed about, and the articulated shaft can reset to keeping away from 1 lateral wall direction of casing, when reciprocating clamp plate 2, baffle 4 can move to the opposite direction of 2 moving directions of clamp plate along with clamp plate 2, when baffle 4 receives external force rebound, baffle 4 can reset.

The bottom end of the shell 1 is fixedly provided with a flange plate 6, the flange plate 6 and the shell 1 are coaxially arranged, a plurality of through holes 7 are uniformly distributed on the flange plate 6 in the circumferential direction, the through holes 7 are located on the outer side of the shell 1, and the shell 1 can be fixed at a use position through the flange plate 6.

A supporting plate 8 is fixed at the top end of the shell 1, a plurality of through grooves communicated with the opening at the upper end of the shell 1 are arranged on the supporting plate 8, and the supporting plate 8 is provided with a thread bushing 9 in a through groove on the axis position of the shell 1 in a rotating way, the axis of the thread bushing 9 is superposed with the axis of the shell 1, the thread bushing 9 can rotate around the axis of the thread bushing 9, a vertically arranged screw rod 10 is arranged in the thread bushing 9, the screw rod 10 is matched with the thread bushing 9 through threads, the screw rod 10 can move up and down by rotating the thread bushing 9, a conical connecting plate 11 is fixed at the bottom end of the screw rod 10, the upper end surface of the connecting plate 11 is smaller than the lower end surface, and the upper end of connecting plate 11 and screw rod 10 fixed connection, the lower extreme of connecting plate 11 is connected with clamp plate 2, and connecting plate 11 can increase clamp plate 2's shock resistance, rotates thread bush 9, and screw rod 10 can drive clamp plate 2 through connecting plate 11 and reciprocate.

An annular sealing gasket 12 is fixed on the upper end face of the pressing plate 2, the axis of the sealing gasket 12 is overlapped with the axis of the shell 1, and when the pressing plate 2 moves upwards, the pressing plate 2 can completely seal the opening in the upper end of the shell 1 by extruding the sealing gasket 12.

1 inside circumference equipartition of casing be fixed with a plurality of slip tables 13, a horizontally spout 14 has all been seted up on the slip table 13, the axis of spout 14 intersects a bit and the nodical axis that is located casing 1, the equal slidable mounting of articulated shaft of connecting rod 3 and first telescopic link 5 is in spout 14, spout 14 can restrict the articulated shaft and only remove along the horizontal direction, a first pressure spring 15 has all been placed in the

spout

14, 15 one end of first pressure spring are fixed on 1 lateral wall of casing, the other end contacts with the articulated shaft of connecting rod 3 and first telescopic link 5, when the direction that articulated axial is close to 1 lateral wall of casing removed, first pressure spring 15 can push against articulated axial and keep away from 1 lateral wall direction of casing and remove.

The utility model discloses a pressure plate 2, baffle 4, the baffle 4, be connected with a vertical second telescopic link 16 of placing between pressure plate 2 and the baffle 4, the upper end and the pressure plate 2 of second telescopic link 16 are connected, the lower extreme is connected with baffle 4, when the distance between baffle 4 and the pressure plate 2 changes, second telescopic link 16 can stretch out and draw back, second telescopic link 16 outside cover has second pressure spring 17, pressure plate 2 and baffle 4 are connected to second pressure spring 17, when baffle 4 atress upwards moves, baffle 4 compresses second pressure spring 17, first and second telescopic link 16 shrink, second telescopic link 16 can prevent that second pressure spring 17 from taking place the bending of horizontal direction when the compression, baffle 4 can push up 1 upper end opening of pressure plate 2 seal housing through second pressure spring 17, after baffle 4 atress is finished, second pressure spring 17 can extend first telescopic link 5, push up baffle 4 to the position of 1 lower extreme opening of seal housing simultaneously.

When the utility model is used, the shell 1 is fixed at the opening of the pipeline through the through hole 7 on the flange 6, the thread bush 9 on the supporting plate 8 is rotated to enable the screw rod 10 to move upwards, the screw rod 10 drives the pressing plate 2 to move upwards through the connecting rod 3, the pressing plate 2 seals the opening of the upper end surface of the shell 1 through the sealing gasket 12, at the moment, the first pressure spring 15 pushes the hinging shaft of the connecting rod 3 and the first telescopic rod 5 to one end of the sliding table 13 away from the side wall of the shell 1 along the sliding groove 14, the second pressure spring 17 pushes the baffle 4 to enable the baffle 4 to be in contact with the opening of the lower end of the shell 1, the first telescopic rod 5 and the second telescopic rod 16 extend, and the openings of the two ends of the shell 1 are sealed;

when the pipeline needs to be communicated with the indoor environment, the threaded sleeve 9 is rotated reversely, the screw rod 10 moves downwards, the screw rod 10 drives the pressing plate 2 and the sealing gasket 12 to move downwards, the opening at the upper end of the shell 1 is opened, when the pressing plate 2 moves downwards, the pressing plate 2 presses the connecting rod 3, the hinged shaft of the connecting rod 3 and the first telescopic rod 5 moves towards the releasing direction close to the inner wall of the shell 1 along the sliding groove 14, at the moment, the first pressure spring 15 and the second pressure spring 17 are compressed, the second telescopic rod 16 is compressed, the baffle 4 is pulled upwards by the first telescopic rod 5, the opening at the lower end of the shell 1 is opened, and the pipeline is communicated with the indoor air;

when the upper opening and the lower opening of the shell 1 are closed, explosion shock waves are generated in the pipeline, the shock waves impact the lower end face of the baffle 4, the baffle 4 moves upwards rapidly, the baffle 4 compresses the second pressure spring 17 gradually, the second telescopic rod 16 is compressed along with the second pressure spring 17, the second pressure spring 17 pushes the pressing plate 2 upwards, the first telescopic rod 16 and the second telescopic rod 16 are compressed, the first pressure spring 15 pushes the connecting rod 3 and the hinging shaft of the first telescopic rod 5, when the first telescopic rod 5 is compressed, the positions of the hinging shafts of the connecting rod 3 and the first telescopic rod 5 are unchanged, meanwhile, the supporting plate 8 pulls the pressing plate 2 through the screw rod 10, the connecting rod 3 cannot pull the pressing plate 2 downwards to open the upper opening of the shell 1 until the shock waves are gradually offset by the baffle 4, the first pressure spring 15 and the second pressure spring 17, the second pressure spring 17 begins to extend and pushes the baffle 4 to move downwards again, the first and second telescoping rods 16 are extended and the baffle 4 reseals the lower end opening of the housing 1.

The device has the advantages that:

1. the utility model discloses a reciprocating of thread bush 9 and screw rod 10 control pressure plate 2 enables casing 1 upper and lower both ends opening and keeps opening or sealed state.

2. The utility model discloses a conical connecting plate 11 is connected screw rod 10 and clamp plate 2, can increase clamp plate 2's shock resistance, makes clamp plate 2 be difficult for losing when suffering the shock wave.

3. The utility model discloses a with second pressure spring 17 cover in the 16 outsides of second telescopic link, can not take place the phenomenon to a lateral bending when making second pressure spring 17 compressed, stability when can increase the device use.

4. The utility model discloses a connecting rod 3 and the articulated shaft of first telescopic link 5 are being pushed against to first pressure spring 15, baffle 4 is being pushed against through second pressure spring 17 to clamp plate 2, when the shock wave arrives, baffle 4 very first time bears the shock wave, and the buffering through first pressure spring 15 and second pressure spring 17, can offset the shock wave gradually, protection clamp plate 2 is not damaged by the shock wave, the impact force that brings the shock wave simultaneously turns into the power of extrusion clamp plate 2 through second pressure spring 17, make clamp plate 2 tighter to the opening seal of casing 1 upper end.

Claims

1. A novel explosion-proof overpressure exhaust valve comprises a vertically placed cylindrical shell (1) and is characterized in that circular openings are formed in the axial line positions of the upper end and the lower end of the shell (1), a circular pressing plate (2) is horizontally placed in the shell (1), the axial line of the pressing plate (2) is overlapped with the axial line of the shell (1), the pressing plate (2) can move up and down in the shell (1), the opening above the shell (1) can be sealed when the pressing plate (2) moves to the upper end of the shell (1), and a plurality of connecting rods (3) are hinged to the lower end face of the pressing plate (2); a horizontal circular baffle (4) is placed in a shell (1) below a pressing plate (2), the axis of the baffle (4) is coincident with the axis of the shell (1), the baffle (4) can move up and down in the shell (1), the baffle (4) can seal an opening below the shell (1) when moving downwards to the lower end of the shell (1), first telescopic rods (5) with the same number as connecting rods (3) are hinged to the upper end face of the baffle (4), the other ends of the first telescopic rods (5) are in one-to-one correspondence with the other ends of the connecting rods (3) and are hinged, hinged shafts of the first telescopic rods (5) and the connecting rods (3) can only move left and right along the horizontal direction, the hinged shafts can reset towards the direction far away from the side wall of the shell (1), when the pressing plate (2) moves up and down, the baffle (4) can move along with the pressing plate (2) towards the opposite direction of the moving direction of the pressing plate (2), when the baffle (4) moves upwards under the external force, the baffle (4) can reset.

2. A novel explosion-proof overpressure exhaust valve as claimed in claim 1, characterized in that a flange (6) is fixed at the bottom end of the housing (1), the flange (6) and the housing (1) are coaxially arranged, a plurality of through holes (7) are evenly distributed on the flange (6) at the circumference, and the through holes (7) are located at the outer side of the housing (1).

3. A novel explosion-proof overpressure exhaust valve as claimed in claim 1, characterized in that the top of the housing (1) is fixed with a support plate (8), the support plate (8) is provided with a plurality of through slots communicating with the upper end opening of the housing (1), and the support plate (8) is rotatably installed with a thread bushing (9) in the through slot on the axis position of the housing (1), the axis of the thread bushing (9) coincides with the axis of the housing (1), the thread bushing (9) can rotate around its own axis, a vertically placed screw rod (10) is installed in the thread bushing (9), the screw rod (10) and the thread bushing (9) are in thread fit, the screw rod (10) can move up and down by rotating the thread bushing (9), a conical connecting plate (11) is fixed at the bottom end of the screw rod (10), the upper end surface of the connecting plate (11) is smaller than the lower end surface, and the upper end of the connecting plate (11) is fixedly connected with the screw rod (10), the lower end of the connecting plate (11) is connected with the pressing plate (2).

4. A novel explosion-proof overpressure vent valve as set forth in claim 1, characterized in that an annular gasket (12) is fixed to the upper end face of the pressure plate (2), and the axis of the gasket (12) coincides with the axis of the housing (1).

5. A novel explosion-proof overpressure exhaust valve according to claim 1, characterized in that, the inside circumference equipartition of casing (1) be fixed with a plurality of slip tables (13), a horizontally spout (14) has all been seted up on slip table (13), the axis of spout (14) intersects a bit and the nodical axis that is located casing (1), the equal slidable mounting of articulated shaft of connecting rod (3) and first telescopic link (5) is in spout (14), spout (14) can restrict the articulated shaft and only remove along the horizontal direction, a first pressure spring (15) has all been placed in spout (14), first pressure spring (15) one end is fixed on casing (1) lateral wall, the other end and the articulated shaft contact of connecting rod (3) and first telescopic link (5).

6. A novel explosion-proof overpressure exhaust valve as claimed in claim 1, characterized in that a second expansion link (16) is vertically arranged between the pressure plate (2) and the baffle (4), the upper end of the second expansion link (16) is connected with the pressure plate (2), the lower end is connected with the baffle (4), when the distance between the baffle (4) and the pressure plate (2) is changed, the second telescopic rod (16) can be telescopic, a second pressure spring (17) is sleeved outside the second telescopic rod (16), the second pressure spring (17) is connected with the pressing plate (2) and the baffle plate (4), when the baffle (4) is forced to move upwards, the baffle (4) compresses the second pressure spring (17), the first and second telescopic rods (16) contract, when the baffle (4) is stressed, the second pressure spring (17) can extend the first telescopic rod (5), meanwhile, the baffle (4) is pushed to the position of the lower end opening of the sealed shell (1).