CN212360925U

CN212360925U - Explosion-proof valve for explosive dust environment

Info

Publication number: CN212360925U
Application number: CN202020528194.3U
Authority: CN
Inventors: 盛旭华
Original assignee: Foshan Xuyin Safety Explosion Proof System Technology Co ltd
Current assignee: Foshan Xuyin Safety Explosion Proof System Technology Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-01-15
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a flame-proof valve used in explosive dust environment, which comprises a box body, wherein the front end and the rear end of the box body are respectively provided with an outlet and an inlet; the inside valve clack structure that is used for control that is equipped with of box the import opens and shuts be provided with eccentric cover link assembly on the inner wall of box, still box outer wall top-down has set gradually the counter weight subassembly, be used for with counter weight subassembly and eccentric cover link assembly cooperation control the hasp subassembly that the valve clack structure opened and shut, wherein, eccentric cover link assembly one end with valve clack structure fixed connection, the eccentric cover link assembly other end stretches out behind the box with the counter weight subassembly is connected. The utility model has the advantages of convenient opening and adjusting, and can effectively cut off the shock wave generated by explosion and the flame propagation.

Description

Explosion-proof valve for explosive dust environment

Technical Field

The utility model relates to an explosion-proof isolating device technical field of dust, more specifically say, in particular to flame proof valve for explosive dust environment.

Background

The dust explosion is easy to occur in the industries of grain and agricultural product dust, metal dust, coal dust, pharmaceutical engineering powder, petrochemical dust, textile industry fiber, wood processing and the like. Especially the dust produced by large-scale manufacturing factory building, the dust produced in the building and the dust transportation process all can produce the potential safety hazard, along with the development of national economy, the dust explosion protection is more and more taken seriously, in order to prevent the occurrence of fire and explosion accidents, the relevant departments of the state require the relevant workplaces to take strict explosion-proof measures, the explosion-proof valve can block pressure waves and flame from extending to other process equipment along the installation pipeline from the process equipment of dust explosion through the special design, the explosion is isolated at the local part, the loss caused by the inevitable dust explosion accidents is reduced to the minimum, however, the existing explosion-proof valve, because the locking piece for locking the valve clack during explosion is arranged in the cavity of the explosion-proof valve, when in use, not only the opening adjustment is difficult, but also the dust is easily accumulated at the locking piece, and the locking piece is blocked, when dust explosion happens, explosion shock waves and flames cannot be separated easily due to locking failure of the locking piece, so that safety accidents are caused, and the actual application requirements are difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an open and adjust convenient, can effectively cut off the blast wave and the flame propagation that the explosion produced and be used for explosive dust environment's flame proof valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an explosion-proof valve for explosive dust environment comprises a box body, an outlet, an inlet and a valve clack structure, wherein the front end and the rear end of the box body are respectively provided with the outlet and the inlet, and the valve clack structure is arranged in the box body and used for controlling the inlet to open and close; the valve clack structure comprises a first ball bearing seat arranged on the inner wall of the rear end of the box body, a rotating shaft penetrating through the first ball bearing seat, a valve clack fixing piece sleeved on the rotating shaft, and a valve clack arranged on the valve clack fixing piece and capable of rotating around the rotating shaft; the valve clack opening and closing mechanism is characterized in that an eccentric sleeve connecting rod assembly is arranged on the inner wall of the front end of the box body, a balance weight assembly and a locking assembly which controls the opening and closing of the valve clack in a matched mode are sequentially arranged on the outer wall of one side end of the box body from top to bottom, one end of the eccentric sleeve connecting rod assembly is fixedly connected with the valve clack, and the other end of the eccentric sleeve connecting rod assembly extends out of one side end of the box body and is connected and matched with the balance weight assembly.

Preferably, the rotating shaft is sleeved with a torsion spring, the torsion spring can provide a reaction force to offset the weight of the valve clack when in work, one end of the torsion spring is installed on the inner wall of the rear end of the box body, and the other end of the torsion spring is installed on the first ball bearing seat.

Preferably, eccentric cover link assembly is including installing second ball bearing seat on the box front end inner wall, inlay and establish third ball bearing seat on the box lateral wall, wear to establish connecting rod pivot, cover on second ball bearing seat and the third ball bearing seat are established in the connecting rod pivot is gone up and is located connecting rod in the second ball bearing seat, wherein, eccentric cover link assembly pass through the connecting rod with the valve clack is connected, eccentric cover link assembly pass through the connecting rod pivot with the counter weight subassembly is connected.

Preferably, the connecting rod is established including the cover the epaxial dead lever of connecting rod pivot, setting are in the first eccentric bearing housing of dead lever bottom, install scalable adjusting bolt on the first eccentric bearing housing, wherein, the connecting rod is through scalable adjusting bolt with the valve clack is connected.

Preferably, the counter weight assembly comprises a second eccentric bearing sleeve arranged on the connecting rod rotating shaft, a counter weight swing arm arranged on the second eccentric bearing sleeve in a penetrating mode, and a counter weight arranged at the top end of the counter weight swing arm, wherein the counter weight assembly is matched with the lock catch assembly in a lock catch mode through the counter weight swing arm.

Preferably, the lock catch assembly comprises a fixed seat, a lock catch body arranged on the fixed seat, a lock catch groove formed in the lock catch body, and a sliding tongue lock catch which is arranged on the lock catch body and is in locking fit with the lock catch groove in a normal state, wherein the lock catch assembly is arranged on the outer wall of one side end of the box body through the fixed seat, and the lock catch assembly is in locking fit with the balance hammer swing arm through the lock catch groove and the sliding tongue lock catch.

Preferably, a limit baffle plate for controlling the maximum opening degree of the valve clack is arranged at the top of the front end in the box body.

Preferably, a plurality of reinforcing ribs are arranged on the valve flap.

Preferably, the valve flap is made of stainless steel material.

Compared with the prior art, the utility model discloses the beneficial effect who has as follows:

1. the utility model adopts the structure that the valve clack structure for controlling the opening and closing of the inlet is arranged in the box body, the eccentric sleeve connecting rod component is arranged on the inner wall of the box body, the balance weight component and the locking component for controlling the opening and closing of the valve clack structure by matching with the balance weight component and the eccentric sleeve connecting rod component are also arranged in turn on the outer wall of the box body from top to bottom, one end of the eccentric sleeve connecting rod component is fixedly connected with the valve clack structure, the other end of the eccentric sleeve connecting rod component extends out of the box body and is connected with the balance weight component, when explosion occurs, the valve clack structure is closed by the action of shock wave, at the moment, the valve clack structure drives the balance weight component to move towards the locking component through the eccentric sleeve connecting rod component, the balance weight component is locked through the locking component, and then the valve clack structure is locked, at the moment, the, thereby effectively isolating shock waves generated by explosion and flame propagation.

2. The utility model discloses a cover is equipped with the torsional spring in the axis of rotation, and the one end of torsional spring is installed on the inner wall of box rear end, and the other end of torsional spring is installed on first ball bearing frame, adopts foretell structure, makes the torsional spring can provide the weight that the valve clack was offset to the reaction force at the during operation, and then reduces energy loss.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic perspective view of a flameproof valve for explosive dust environment according to the present invention;

FIG. 2 is a schematic cross-sectional view of a flameproof valve for explosive dust environment according to the present invention;

FIG. 3 is a schematic diagram of a valve clack structure and an eccentric bushing connecting rod assembly of the explosion suppression valve for explosive dust environment according to the present invention;

FIG. 4 is a balance weight subassembly, hasp subassembly sketch map of a flame proof valve for explosive dust environment.

Description of reference numerals: 1. the box, 2 exports, 3, import, 4, valve clack structure, 41, first ball bearing seat, 42, axis of rotation, 43, valve clack mounting, 44, valve clack, 5, eccentric bushing link assembly, 51, second ball bearing seat, 52, third ball bearing seat, 53, connecting rod pivot, 54, the connecting rod, 541, the dead lever, 542, first eccentric bearing housing, 543, scalable adjusting bolt, 6, the balance weight subassembly, 61, second eccentric bearing housing, 62, the balance weight swing arm, 63, the balance weight, 7, the hasp subassembly, 71, the fixing base, 72, the hasp body, 73, the hasp groove, 74, the tongue-and-groove hasp, 8, the torsional spring, 9, limit baffle, 100, the strengthening rib.

Detailed Description

Referring to fig. 1 to 4, the explosion-proof valve for explosive dust environment comprises a box body 1, wherein an outlet 2 and an inlet 3 are respectively arranged at the front end and the rear end of the box body 1; the utility model provides a box, including box 1, eccentric cover link assembly 5, counterweight assembly 6, be used for and eccentric cover link assembly 5 cooperation control are set gradually from top to bottom to 1 outer wall of box 1 the hasp subassembly 7 that valve clack structure 4 opened and shut, wherein, eccentric cover link assembly 5 one end with valve clack structure 4 fixed connection, the eccentric cover link assembly 5 other end stretches out behind the box 1 with counterweight assembly 6 connects to be provided with eccentric cover link assembly 5 on the inner wall of box 1.

The valve flap structure 4 comprises a first ball bearing seat 41 arranged on the inner wall of the rear end of the box body 1, a rotating shaft 42 arranged on the first ball bearing seat 41 in a penetrating manner, a valve flap fixing piece 43 sleeved on the rotating shaft 42, and a valve flap 44 arranged on the valve flap fixing piece 43 and capable of rotating around the rotating shaft 42; one end of the eccentric sleeve connecting rod component 5 is fixedly connected with the valve clack 44 of the valve clack structure 4.

The rotating shaft 42 is sleeved with a torsion spring 8, the torsion spring 8 can provide a reaction force to offset the weight of the valve clack 44 when in working, one end of the torsion spring 8 is installed on the inner wall of the rear end of the box body 1, and the other end of the torsion spring 8 is installed on the first ball bearing seat 41.

Eccentric bushing link assembly 5 is including installing second ball bearing frame 51 on the inner wall of box 1 front end, inlay and establish third ball bearing frame 52 on a lateral wall of box 1, wear to establish connecting rod pivot 53, cover on second ball bearing frame 51 and the third ball bearing frame 52 are established connecting rod 54 in the second ball bearing frame 51 is gone up and is located in connecting rod pivot 53, wherein, eccentric bushing link assembly 5 is connected with valve clack 44 through connecting rod 54, eccentric bushing link assembly 5 through connecting rod pivot 53 with counter weight subassembly 6 is connected.

The connecting rod 54 comprises a fixing rod 541 arranged on the connecting rod rotating shaft 53, a first eccentric bearing sleeve 542 arranged at the bottom end of the fixing rod 541, and a telescopic adjusting bolt 543 arranged on the first eccentric bearing sleeve 542, wherein the connecting rod 54 is connected with the valve flap 44 through the telescopic adjusting bolt 543.

The counterweight assembly 6 comprises a second eccentric bearing sleeve 61 installed on the connecting rod rotating shaft 53, a counterweight swing arm 62 arranged on the second eccentric bearing sleeve 61 in a penetrating mode, and a counterweight 63 arranged at the top end of the counterweight swing arm 62, wherein the counterweight assembly 6 is in locking fit with the locking assembly 7 through the counterweight swing arm 62.

The lock catch assembly 7 comprises a fixed seat 71, a lock catch body 72 arranged on the fixed seat 71, a lock catch groove 73 formed in the lock catch body 72, and a sliding tongue lock catch 74 arranged on the lock catch body 72 and in locking fit with the lock catch groove 73 in a normal state, wherein the lock catch assembly 7 is arranged on the outer wall of one side end of the box body 1 through the fixed seat 71, and the lock catch assembly 7 is in locking fit with the balance hammer swing arm 62 through the lock catch groove 73 and the sliding tongue lock catch 74.

And a limiting baffle 9 for controlling the maximum opening degree of the valve clack structure 4 is arranged at the top of the front end in the box body 1.

A plurality of ribs 100 are provided on the valve flap 44.

The valve flap 44 is made of stainless steel material.

Adopt foretell structure, make the utility model has the advantages of open the regulation convenient, can effectively cut off the shock wave and the flame propagation that the explosion produced.

When the explosion-proof valve is used, the opening and closing stroke of the valve clack can be adjusted through the telescopic adjusting bolt 543, the box body 1 is communicated with a working pipeline communicated with a ventilator through the outlet 2 and the inlet 3, the sliding tongue lock 74 is manually pulled to enable the sliding tongue lock 74, the lock groove and the balance weight swing arm 62 to be no longer in a locking state, a reaction force is provided through the torsion spring 8 to offset the weight of the valve clack, the telescopic adjusting bolt 543 is pushed to drive the connecting rod rotating shaft 53 to rotate, the balance weight swing arm 62 is enabled to leave the position of the lock groove 73 under the action of the balance weight 63, so that the valve clack 44 is in an opening state, then the ventilator is started, during normal work, the explosion-proof valve for explosive dust environment is driven to be opened by airflow, materials enter from the ventilator inlet 3 and are discharged from the outlet 2, and during the whole work, the opening state of the valve clack 44 is controlled by the, when explosion occurs, the valve flap 44 is closed under the action of shock waves, at the moment, the valve flap 44 drives the fixing rod 541 to move forwards through the telescopic adjusting bolt 543, the connecting rod rotating shaft 53 is pushed to rotate through the fixing rod 541, the balance weight swing arm 62 is further pushed to move towards the lock catch groove 73 and the sliding tongue lock catch 74, the balance weight swing arm 62 is pushed to open the sliding tongue lock catch 74 to enter the lock catch groove 73 under the action of pushing force, the sliding tongue lock catch 74 is matched with the lock catch groove 73 to lock the balance weight swing arm 62 under the action of resetting force, so that the valve flap 44 is locked, at the moment, the valve flap 44 cannot be opened again due to negative pressure generated by explosion, the explosion-proof valve for the explosive dust environment can effectively cut off the shock waves and flame propagation generated by explosion, secondary explosion is avoided, the safety of personnel and equipment at the upstream of the explosion-.

In a word, the utility model adopts the above structure, have open the shock wave that the regulation is convenient, can effectively cut off the explosion production and the advantage of flame propagation.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A flame-proof valve for explosive dust environment comprises a box body (1), wherein an outlet (2) and an inlet (3) are respectively arranged at the front end and the rear end of the box body (1); the method is characterized in that: the utility model provides a box, including box (1) inside be equipped with and be used for control import (3) valve clack structure (4) that open and shut be provided with eccentric cover link assembly (5) on the inner wall of box (1) still box (1) outer wall top-down has set gradually counter weight subassembly (6), be used for with counter weight subassembly (6) and eccentric cover link assembly (5) cooperation control the hasp subassembly (7) that valve clack structure (4) opened and shut, wherein, eccentric cover link assembly (5) one end with valve clack structure (4) fixed connection, the eccentric cover link assembly (5) other end stretches out box (1) back with counter weight subassembly (6) are connected.

2. The explosion suppression valve for the explosive dust environment according to claim 1, wherein the valve flap structure (4) comprises a first ball bearing seat (41) installed on the inner wall of the rear end of the box body (1), a rotating shaft (42) penetrating through the first ball bearing seat (41), a valve flap fixing member (43) sleeved on the rotating shaft (42), and a valve flap (44) installed on the valve flap fixing member (43) and capable of rotating around the rotating shaft (42); one end of the eccentric sleeve connecting rod component (5) is fixedly connected with the valve clack (44) of the valve clack structure (4).

3. The explosion suppression valve for the explosive dust environment according to claim 2, wherein a torsion spring (8) is sleeved on the rotating shaft (42) and the torsion spring (8) can provide a reaction force to offset the weight of the valve flap (44) when in work, wherein one end of the torsion spring (8) is installed on the inner wall of the rear end of the box body (1), and the other end of the torsion spring (8) is installed on the first ball bearing seat (41).

4. The explosion suppression valve for the explosive dust environment according to claim 1, wherein the eccentric sleeve connecting rod assembly (5) comprises a second ball bearing seat (51) installed on the inner wall of the front end of the box body (1), a third ball bearing seat (52) embedded on one side wall of the box body (1), a connecting rod rotating shaft (53) arranged on the second ball bearing seat (51) and the third ball bearing seat (52) in a penetrating manner, and a connecting rod (54) sleeved on the connecting rod rotating shaft (53) and located in the second ball bearing seat (51), wherein the eccentric sleeve connecting rod assembly (5) is connected with the valve clack (44) through the connecting rod (54), and the eccentric sleeve connecting rod assembly (5) is connected with the balance weight assembly (6) through the connecting rod rotating shaft (53).

5. The explosion suppression valve for the explosive dust environment according to claim 4, wherein the connecting rod (54) comprises a fixing rod (541) sleeved on the connecting rod rotating shaft (53), a first eccentric bearing sleeve (542) arranged at the bottom end of the fixing rod (541), and a telescopic adjusting bolt (543) installed on the first eccentric bearing sleeve (542), wherein the connecting rod (54) is connected with the valve flap (44) through the telescopic adjusting bolt (543).

6. The explosion suppression valve for the explosive dust environment according to claim 4, wherein the balance weight assembly (6) comprises a second eccentric bearing sleeve (61) installed on the connecting rod rotating shaft (53), a balance weight swing arm (62) arranged on the second eccentric bearing sleeve (61) in a penetrating mode, and a balance weight (63) arranged at the top end of the balance weight swing arm (62), wherein the balance weight assembly (6) is in lock catch fit with the lock catch assembly (7) through the balance weight swing arm (62).

7. The explosion suppression valve for the explosive dust environment according to claim 6, wherein the latch assembly (7) comprises a fixed seat (71), a latch body (72) installed on the fixed seat (71), a latch groove (73) formed in the latch body (72), and a sliding tongue latch (74) which is arranged on the latch body (72) and is in locking fit with the latch groove (73) in a normal state, wherein the latch assembly (7) is installed on the outer wall of one side end of the box body (1) through the fixed seat (71), and the latch assembly (7) is in locking fit with the balance hammer swing arm (62) through the latch groove (73) and the sliding tongue latch (74).

8. The explosion suppression valve for the explosive dust environment according to claim 1, wherein a limit baffle (9) for controlling the maximum opening degree of the valve flap structure (4) is arranged at the top of the front end in the box body (1).

9. An explosion suppression valve for explosive dust environment according to claim 2, characterized in that a plurality of reinforcing ribs (100) are arranged on the valve flap (44).

10. Explosion suppression valve for explosive dust environments according to claim 9, characterized in that the valve flap (44) is made of stainless steel material.