CN215110770U

CN215110770U - Valve clack reinforcing mechanism of explosion-proof valve

Info

Publication number: CN215110770U
Application number: CN202121467661.7U
Authority: CN
Inventors: 王宁; 张双喜
Original assignee: Suzhou Anding Rupture Disk Manufacturing Co ltd
Current assignee: Suzhou Anding Rupture Disk Manufacturing Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-10
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a valve clack reinforcing mechanism of flame proof valve, including the valve body, the front end of valve body is provided with the import pipe, the rear end of valve body is provided with the outlet pipe, the one end of outlet pipe has seted up the export, the import pipe extends to the valve body inside, extends to the switch that helps the valve clack inside the valve body, the one end of import pipe has seted up the import, the other end of import pipe is the inclined plane, the valve body is inside to be provided with pivot and valve clack, the pivot is installed on the axle support, the axle support is installed on the other end upper portion of import pipe, the pivot is connected with the upper end fixed connection of swing arm, the lower extreme of swing arm is connected with the valve plate through the valve seat, installs the valve clack on the valve plate, be provided with reinforcing means between swing arm and the valve body; the utility model discloses be provided with reinforcing mechanism, can prevent that valve clack and valve plate striking inclined plane from leading to valve clack, valve plate to warp and striking inclined plane bounce-back, play the effect of reinforcing valve clack intensity, realize that the flame proof valve is sealed completely.

Description

Valve clack reinforcing mechanism of explosion-proof valve

Technical Field

The utility model relates to a flame proof valve technical field, concretely relates to valve clack reinforcing mechanism of flame proof valve.

Background

The dust explosion means that the combustible dust meets a heat source within the explosion limit range, the flame instantly spreads in the whole mixed dust space, the chemical reaction speed is extremely high, a large amount of heat is released at the same time, high temperature and high pressure are formed, the energy of the system is converted into mechanical energy and the radiation of light and heat, and the destructive power is very strong.

The dust that produces in large-scale manufacturing factory building, the building inside, especially the transport process of dust can produce the potential safety hazard, china has taken place several major dust explosion accidents to cause major casualties and loss of property, at present, along with the development of national economy, dust explosion protection receives more and more attention, some dust collecting equipment come into play to the right moment of transport, but in the isolating device of dust inlet pipeline installation in the transmission on most dust collecting equipment of current, it is sealed incompletely, flame and the shock wave that the explosion produced can not be kept apart by explosion proof valve completely, and take place to warp and destroy easily. In view of the above drawbacks, it is necessary to design a valve flap enhancement mechanism for an explosion-proof valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve clack reinforcing mechanism of flame proof valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a valve clack reinforcing mechanism of flame proof valve, includes the valve body, the front end of valve body is provided with the import pipe, the rear end of valve body is provided with the outlet pipe, the export has been seted up to the one end of outlet pipe, inside the import pipe extended to the valve body, extended to the inside switch that helps the valve clack of valve body, the import has been seted up to the one end of import pipe, the other end of import pipe is the inclined plane, inside pivot and the valve clack of being provided with of valve body, the pivot is installed on the axle support, the other end upper portion at the import pipe is installed to the axle support, the upper end fixed connection of pivot and swing arm, the lower extreme of swing arm passes through the disk seat and is connected with the valve plate, installs the valve clack on the valve plate, be provided with reinforcing apparatus between swing arm and the valve body.

Preferably, the reinforcing device comprises a first connecting rod and a second connecting rod, the lower end of the first connecting rod is hinged to the upper end of the second connecting rod through a first pin shaft, the connector is installed at the upper end of the first connecting rod and is hinged to a first support through a second pin shaft, and the first support is installed on the inner wall of the valve body.

Preferably, a second support is installed on the first connecting rod, a first positioning pin is installed on the second support, the first positioning pin is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the second positioning pin.

Preferably, the second locating pin is fixed on the third support, the third support is installed on the inner wall of valve body, be provided with the arm of force on the valve body, the arm of force is through pivot and swing arm welded fastening, and is fixed with the balancing weight above the arm of force.

Preferably, the lower end of the second connecting rod is hinged to a fourth support through a third pin shaft, and the fourth support is installed at the lower end of the swing arm.

Preferably, the valve plate includes the nonmetal seal membrane that metal sintering net and metal sintering net both sides were pasted, metal sintering net includes protective layer, control layer, reposition of redundant personnel layer, accuracy control layer and enhancement layer.

Preferably, the protective layer and the reinforcing layer are metal meshes of 10 meshes by 0.8mm, the control layer and the control layer are metal meshes of 40 meshes by 0.15mm, and the shunting layer is metal meshes of 20 meshes by 0.4 mm.

Compared with the prior art, the utility model relates to a valve clack reinforcing mechanism of flame proof valve, when normal work, the air current flows into the valve body through the import, the air current blows open the valve clack through the import pipe, make the valve clack leave the inclined plane completely, the rotation of valve clack drives valve plate and swing arm rotation, thereby drive arm of force and balancing weight rotation on the valve body, the swing arm opens under the drive of balancing weight gravity, the spring shrink simultaneously stimulates first connecting rod to rotate upwards, first connecting rod stimulates the rotation of second connecting rod, make swing arm, valve plate and valve clack rise, thereby increase the opening angle of valve clack, reduce the flow resistance, increase the circulation, the loss of the amount of wind has been reduced; when the dust transmission pipeline is exploded, airflow rushes into the valve body through the outlet pipe, under the impact action of the explosion shock wave, the valve clack is pushed to rotate, so that the valve clack is attached to the inclined surface of the inlet pipe and completely attached to the inclined surfaces of the valve plate and the inlet pipe, the inlet pipe is completely sealed by the valve plate, meanwhile, the valve plate and the swing arm are driven to rotate by the rotation of the valve clack, the force arm and the counterweight block on the valve body of the rotating shaft are driven to rotate, the second connecting rod is pulled by the rotating shaft to rotate, the first connecting rod also rotates along with the rotation of the spring, the spring is stretched to play a buffering role, the valve clack and the valve plate are prevented from impacting the inclined surface, the valve clack, the valve plate is prevented from deforming and impacting the inclined surface to rebound, the strength of the valve clack is enhanced, and the complete sealing of the explosion-proof valve is realized; the utility model discloses paste the non-metallic seal membrane of F46 material in metal sintering net both sides, make the air current through the time, through the sealed effect that non-metallic seal membrane played metal sintering net, drive the normal of whole valve plate and open.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

FIG. 1 is a schematic structural view of a valve flap reinforcement mechanism of a flame-proof valve of the present invention;

FIG. 2 is a schematic diagram of a valve plate structure in a valve clack reinforcing mechanism of the flame-proof valve of the present invention;

fig. 3 is the utility model relates to a metal sintering net structure schematic diagram in valve clack reinforcing mechanism of flame proof valve.

In the drawings:

1. a valve body; 2. an inlet pipe; 3. an outlet pipe; 4. an inlet; 5. a rotating shaft; 6. a valve flap; 7. a shaft support; 8. swinging arms; 9. a valve seat; 10. a first link; 11. a second link; 12. a first pin shaft; 13. a connector; 14. a second pin shaft; 15. a first support; 16. a second support; 17. a first positioning pin; 18. a spring; 19. a second positioning pin; 20. a third support; 21. an outlet; 22. a force arm; 23. a balancing weight; 24. a valve plate; 25. a non-metallic sealing film; 26. sintering the metal net; 261. a protective layer; 262. a control layer; 263. a shunt layer; 264. a precision control layer; 265. a reinforcing layer; 27. a third pin shaft; 28. and a fourth support.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a valve clack reinforcing mechanism of an explosion-proof valve comprises a valve body 1, wherein an inlet pipe 2 is arranged at the front end of the valve body 1, an outlet pipe 3 is arranged at the rear end of the valve body 1, an outlet 21 is formed in one end of the outlet pipe 3, the inlet pipe 2 extends into the valve body 1 and is beneficial to opening and closing of a valve clack 6, one end of the inlet pipe 2 is provided with an inlet 4, the other end of the inlet pipe 2 is an inclined plane, a rotating shaft 5 and the valve clack 6 are arranged in the valve body 1, the rotating shaft 5 is installed on a shaft support 7, the shaft support 7 is installed on the upper portion of the other end of the inlet pipe 2, the rotating shaft 5 is fixedly connected with the upper end of a swing arm 8, the lower end of the swing arm 8 is connected with a valve plate 24 through a valve seat 9, the valve clack 6 is installed on the valve plate 24, a reinforcing device is arranged between the swing arm 8 and the valve body 1 and comprises a first connecting rod 10 and a second connecting rod 11, the lower extreme of first connecting rod 10 is articulated through the upper end of first round pin axle 12 with second connecting rod 11, connector 13 is installed to the upper end of first connecting rod 10, connector 13 is articulated with first support 15 through second round pin axle 14, first support 15 is installed on the inner wall of valve body 1, install second support 16 on the first connecting rod 10, install first locating pin 17 on the second support 16, the one end fixed connection of first locating pin 17 and spring 18, the other end and the 19 fixed connection of second locating pin of spring 18, second locating pin 19 is fixed on third support 20, third support 20 is installed on the inner wall of valve body 1, be provided with the arm of force 22 on the valve body 1, arm of force 22 is through pivot arm 5 and swing arm 8 welded fastening, and is fixed with balancing weight 23 above 22.

In this embodiment, the lower end of the second connecting rod 11 is hinged to a fourth support 28 through a third pin 27, and the fourth support 28 is installed at the lower end of the swing arm 8.

The valve plate 24 in this embodiment includes a metal sintering net 26 and a nonmetal sealing film 25 adhered to both sides of the metal sintering net 26, the metal sintering net 26 includes a protection layer 261, a control layer 262, a shunt layer 263, a precision control layer 264 and a reinforcing layer 265, the protection layer 261 and the reinforcing layer 265 are metal nets of 10 meshes by 0.8mm, the control layer 262 and the control layer 262 are metal nets of 40 meshes by 0.15mm, the shunt layer 263 is metal nets of 20 meshes by 0.4mm, and the protection layer 261, the control layer 262, the shunt layer 263, the precision control layer 264 and the reinforcing layer 265 are laminated and pressed and vacuum-sintered to form the metal sintering net 26. The nonmetal sealing films 25 made of F46 are pasted on two sides of the metal sintering net 26, so that when air flows, the whole valve plate is driven to be normally opened by the sealing effect of the nonmetal sealing films 25 on the metal sintering net 26.

The non-metal sealing film 25 in this embodiment is made of F46 material, and is a copolymer of tetrafluoroethylene and hexafluoropropylene.

The utility model discloses a theory of operation: during normal operation, airflow flows into the valve body 1 through the inlet 4, the valve clack 6 is blown open by the airflow through the inlet pipe 2, the valve clack 6 is enabled to completely leave the inclined plane, the valve plate 24 and the swing arm 8 are driven to rotate by the rotation of the valve clack 6, so that the force arm 22 and the balance weight 23 on the valve body 1 are driven to rotate, the swing arm 8 is driven by the gravity of the balance weight 23 to open, meanwhile, the spring 18 contracts to pull the first connecting rod 10 to rotate upwards, the first connecting rod 10 pulls the second connecting rod 11 to rotate, so that the swing arm 8, the valve plate 24 and the valve clack 6 ascend, the opening angle of the valve clack 6 is increased, the flow resistance is reduced, the circulation is increased, and the loss of the air volume is reduced; when the dust transmission pipeline explodes, the airflow rushes into the valve body 1 through the outlet pipe 3, under the shock wave impact effect of the explosion, the valve flap 6 is pushed to rotate, the valve flap 6 is attached to the inclined plane of the inlet pipe 2, the valve flap 24 is attached to the inclined plane of the inlet pipe 2 completely, the inlet pipe 2 is sealed completely by the valve plate 24, meanwhile, the valve flap 6 rotates, the valve plate 24 and the swing arm 8 are driven to rotate, the force arm 22 and the counter weight 23 on the valve body 1 of the rotating shaft 8 are driven to rotate, the rotating shaft 8 pulls the second connecting rod 11 to rotate, the first connecting rod 10 also rotates along with the rotation, the spring 18 stretches to play a buffering effect, the valve flap 6 and the valve plate 24 are prevented from impacting the inclined plane, the valve flap 6 is caused, the valve plate 24 deforms and rebounds on the inclined plane, the effect of enhancing the strength of the valve flap 6 is achieved, and the explosion-proof valve is completely sealed.

The utility model discloses regard metal sintering net 26 as the main material of valve plate 24, metal sintering net 26 mainly used removes dust and filtering action, and it adopts multilayer metal to weave the silk screen, forms through technology manufacturing such as stromatolite suppression and vacuum sintering, has a novel filtering material of higher mechanical strength and whole rigid structure. When the explosion generates shock waves and flame, the impact force is greater than the suction force of the fan, and acts on the non-metal sealing film 25 on the valve plate at the side of the air outlet pipe, so that the valve plate falls down to be tightly attached to the end part of the air inlet pipe and is locked by the locking mechanism. After the valve is locked, shock waves and flames in the pipeline continue to act on the valve plate, the tensile strength of the non-metal sealing film 25 is greatly reduced under the action of high temperature, and the shock waves and the flames can damage the non-metal sealing film 25 and enter the metal sintering net 26 structure along with the rise of the pressure in the valve body of the explosion-proof valve; the flame extinguishing effect is achieved by utilizing the characteristic that the self structure of the metal sintering net 26 has strong heat absorption performance and the wall effect; the gas flow generated after flame extinguishing rapidly passes through the metal sintering net 26, and when the gas flow passing through the metal sintering net is enough, the non-metal sealing film 25 on the side of the air inlet pipe is broken by the generated pressure, so that the effect of pressure relief is achieved. After the actions are finished, with the subsequent flame generated by explosion, the burning dust particles are filtered by the valve plate of the metal sintering net 26, and the normal gas circulation is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a valve clack reinforcing mechanism of flame proof valve which characterized in that: comprises a valve body (1), an inlet pipe (2) is arranged at the front end of the valve body (1), an outlet pipe (3) is arranged at the rear end of the valve body (1), an outlet (21) is arranged at one end of the outlet pipe (3), the inlet pipe (2) extends into the valve body (1), one end of the inlet pipe (2) is provided with an inlet (4), the other end of the inlet pipe (2) is an inclined plane, a rotating shaft (5) and a valve clack (6) are arranged inside the valve body (1), the rotating shaft (5) is arranged on a shaft support (7), the shaft support (7) is arranged at the upper part of the other end of the inlet pipe (2), the upper end fixed connection of pivot (5) and swing arm (8), the lower extreme of swing arm (8) passes through disk seat (9) and is connected with valve plate (24), installs valve clack (6) on valve plate (24), be provided with reinforcing means between swing arm (8) and valve body (1).

2. The valve clack reinforcing mechanism of the explosion-proof valve in claim 1 is characterized in that: the reinforcing device comprises a first connecting rod (10) and a second connecting rod (11), the lower end of the first connecting rod (10) is hinged to the upper end of the second connecting rod (11) through a first pin shaft (12), a connector (13) is installed at the upper end of the first connecting rod (10), the connector (13) is hinged to a first support (15) through a second pin shaft (14), and the first support (15) is installed on the inner wall of the valve body (1).

3. The valve clack reinforcing mechanism of the explosion-proof valve in claim 2 is characterized in that: install second support (16) on first connecting rod (10), install first locating pin (17) on second support (16), the one end fixed connection of first locating pin (17) and spring (18), the other end and second locating pin (19) fixed connection of spring (18).

4. The valve clack reinforcing mechanism of the explosion-proof valve in claim 3 is characterized in that: second locating pin (19) are fixed on third support (20), third support (20) are installed on the inner wall of valve body (1), be provided with arm of force (22) on valve body (1), arm of force (22) are through pivot (5) and swing arm (8) welded fastening, and arm of force (22) top is fixed with balancing weight (23).

5. The valve clack reinforcing mechanism of the explosion-proof valve in claim 2 is characterized in that: the lower end of the second connecting rod (11) is hinged to a fourth support (28) through a third pin shaft (27), and the fourth support (28) is installed at the lower end of the swing arm (8).