CN212040945U

CN212040945U - Safe flame-retardant explosion-proof valve of fan coal mill

Info

Publication number: CN212040945U
Application number: CN202020463009.7U
Authority: CN
Inventors: 李东硕
Original assignee: Shenyang Heavy Power Equipment Manufacture Co ltd
Current assignee: Shenyang Heavy Power Equipment Manufacture Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-01
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a safe flame-retardant explosion-proof valve of a fan coal mill, which belongs to the field of coal mine machinery and comprises an explosion-proof pipe, a branch pipe and an aluminum diaphragm plate; the interior bottom laminating formula of explosion-proof pipe is equipped with the backup pad, and the week side of aluminium lamina membranacea is equipped with the bottom plate of joint in the backup pad top, is fixed with the round sand grip on the backup pad up end, set up on the bottom plate bottom surface with the bayonet socket of sand grip looks adaptation, be fixed with the spring of vertical setting on the bottom plate, the upper end overlap joint of spring has the deflector, the top of deflector is fixed with the adjusting lever that runs through the valve body top, the valve body top is fixed with the lock nut of screw thread suitability suit on the adjusting lever. The utility model utilizes the scalability of the spring, when the coal powder in the cabin reaches certain dangerous pressure, the pressure can be properly decompressed, the safety protection effect is achieved, the workload of the aluminum diaphragm plate is lightened, the service life of the aluminum diaphragm plate is prolonged, the replacement times of the aluminum diaphragm plate are reduced, and the application efficiency is improved; and the pretightening force of the spring is adjustable, so that the device can be suitable for various requirements.

Description

Safe flame-retardant explosion-proof valve of fan coal mill

Technical Field

The utility model relates to a coal mine machinery, specificly relate to a fire-retardant explosion-proof valve of fan coal pulverizer safety.

Background

The fan coal mill explosion-proof equipment that china's production used at present is simple aluminium lamina membranacea mostly, closes fixedly with the bolt, can not adjust, even not explode, because the corruption of steam and environment, also need frequent change, not only consuming time, and increase cost. The existence of these problems has adverse effects on safe production, consumption reduction and energy conservation.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a fire-retardant explosion-proof valve of fan coal pulverizer safety, its scalability that utilizes the spring, when the under-deck buggy reaches certain dangerous pressure, can suitably decompress, can prevent the buggy combustion explosion, played the safety protection effect, alleviateed the work load of aluminium lamina membranacea, be favorable to prolonging the life of aluminium lamina membranacea, reduce its change number of times, improved the application efficiency.

2. Technical scheme

In order to solve the above problem, the utility model adopts the following technical scheme:

a safe flame-retardant explosion-proof valve of a fan coal mill comprises an explosion-proof pipe, a branch pipe connected to the middle of the bottom of the explosion-proof pipe and an aluminum diaphragm plate arranged at the communication position of the branch pipe and the explosion-proof pipe; the inner bottom of the explosion-proof pipe is provided with a supporting plate in a laminating mode, the supporting plate is fixedly connected with the explosion-proof pipe through a bolt, a part of the supporting plate, which is aligned with the branch pipe, is provided with a through hole corresponding to the pipe orifice of the branch pipe, and the aluminum membrane plate is positioned above the supporting plate; the week side of aluminium lamina membranacea is equipped with the joint in the bottom plate of backup pad top, and the aluminium lamina membranacea passes through the bolt fastening on the bottom plate, be fixed with the round on the up end of backup pad and encircle the sand grip of opening, seted up on the bottom surface of bottom plate with the bayonet socket of sand grip looks adaptation, the up end of bottom plate corresponds the both sides of explosion-proof tube both ends side and all is fixed with the spring of a vertical setting, every the upper end of spring all has set up a deflector, the top laminating formula of explosion-proof tube is fixed with a roof, the top of deflector is fixed with an adjusting lever that runs through explosion-proof tube top and roof, just all set up the mouth of wearing that just supplies the adjusting lever to pass on explosion-proof tube top and the roof, the adjusting lever is the threaded rod, the top of roof is fixed with the lock nut of screw thread suitability suit on the adjusting lever.

Furthermore, a rubber ring is fixedly arranged in the clamping opening, and an opening matched with the raised line is formed in the rubber ring. The rubber ring can be attached to the raised line more closely, and the sealing of the cavity below the aluminum film plate is better.

Furthermore, an annular notch for installing the aluminum diaphragm plate is formed in the bottom plate, a gasket pressed on the aluminum diaphragm plate is arranged in the annular notch, and corresponding bolts sequentially penetrate through the gasket, the aluminum diaphragm plate and the bottom plate. The gasket can compress tightly the periphery of aluminium lamina membranacea, can promote to realize the sealed installation of aluminium lamina membranacea week side.

Furthermore, the upper end face of the bottom plate is fixedly provided with guide rods which correspond to the springs one by one and penetrate through the inner sides of the springs, and the guide rods sequentially penetrate through the axes of the guide plate and the adjusting rod and extend to the upper side of the adjusting rod. On one hand, the spring can be ensured to be in a vertical state, and the upper end of the spring is prevented from being separated from the guide plate; on the other hand, when the pulverized coal in the cabin reaches certain dangerous pressure and needs to be decompressed properly, the bottom plate is impacted to move upwards, the guide rod moves upwards along with the impact, and related personnel can see that the upper end of the guide rod moves upwards obviously, so that the corresponding decompression operation is carried out in the explosion-proof valve, and the application is convenient.

Further, the width of the guide plate is larger than the diameter of the adjusting rod. The guide plate is ensured to be positioned in the explosion-proof pipe, and the guide plate is prevented from moving to the position above the top plate under the reaction force of the spring.

3. Advantageous effects

(1) The utility model is provided with a supporting plate which is arranged below an aluminum membrane plate, a bottom plate which is used for installing the aluminum membrane plate and a spring which is connected above the bottom plate, and the periphery type sealing is realized between the bottom plate and the supporting plate through a bayonet and a convex strip, in application, when the coal dust in the fan coal mill cabin reaches certain dangerous pressure, the coal dust can generate an upward driving force to the bottom plate, if the driving force is larger than the elastic force of the spring at the moment, the bottom plate can be driven to move upwards, once the bayonet on the bottom plate is separated from the convex strip on the supporting plate, the coal dust can enter the main body part of the explosion-proof pipe through the clearance between the bottom plate and the supporting plate, along with the rising of the bottom plate, the spring is further compressed, the elastic force of the spring is gradually increased, once the pressure of the coal dust in the cabin is smaller than the elastic force, the one-time proper decompression can be completed, the workload of the aluminum diaphragm plate can be reduced, the service life of the aluminum diaphragm plate can be prolonged, the replacement frequency of the aluminum diaphragm plate can be reduced, and the application efficiency can be improved.

(2) The utility model is connected with the adjusting rod which runs through the top of the valve body at the upper end of the spring and is provided with the locking nut which is fixed at the outer side of the top of the valve body, the locking nut is matched with the adjusting rod through the thread, in application, the adjusting rod is rotated to be enabled to move up and down under the matching of the locking nut, when the adjusting rod moves up, the length of the spring is increased, the elasticity is smaller, and the corresponding danger pressure is smaller; when the adjusting rod moves downwards, the length of the spring is reduced, the elasticity is larger, the corresponding dangerous pressure is larger, and the adjustment of the pre-tightening force of the spring can be realized.

To sum up, the utility model utilizes the scalability of the spring, when the coal powder in the cabin reaches certain dangerous pressure, the pressure can be properly decompressed, the combustion and explosion of the coal powder can be prevented, the safety protection effect is achieved, the workload of the aluminum membrane plate is lightened, the service life of the aluminum membrane plate is prolonged, the replacement times of the aluminum membrane plate are reduced, and the application efficiency is improved; and the pretightening force of the spring is adjustable, so that the device can be suitable for various requirements.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, and the right half side of the diagram is a cross-sectional view.

Reference numerals: 1. a top plate; 2. a bolt; 3. a guide plate; 4. a spring; 5. a guide bar; 6. a protective net; 7. a gasket; 8. an aluminum diaphragm plate; 9. a rubber ring; 10. an explosion-proof tube; 11. a base plate; 12. a support plate; 13. locking the nut; 14. an adjusting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

The safe flame-retardant explosion-proof valve of the fan coal mill shown in figure 1 comprises an explosion-proof pipe 10, a branch pipe connected to the middle of the bottom of the explosion-proof pipe 10 and an aluminum membrane plate 8 arranged at the communication part of the branch pipe and the explosion-proof pipe 10; a support plate 12 is arranged on the inner bottom of the explosion-proof pipe 10 in a laminating mode, the support plate 12 is fixedly connected with the explosion-proof pipe 10 through a bolt 2, a through hole corresponding to the pipe orifice of the branch pipe is formed in the part, aligned with the branch pipe, of the support plate 12, and the aluminum membrane plate 8 is located above the support plate 12; a bottom plate 11 clamped above the support plate 12 is arranged on the periphery of the aluminum diaphragm plate 8, the aluminum diaphragm plate 8 is fixed on the bottom plate 11 through bolts 2, a circle of convex strips surrounding the through holes are fixed on the upper end surface of the supporting plate 12, a bayonet matched with the convex strips is arranged on the bottom surface of the bottom plate 11, two vertically arranged springs 4 are fixed on two sides of the upper end face of the bottom plate 11 corresponding to two end sides of the explosion-proof pipe 10, the upper end of each spring 4 is lapped with a guide plate 3, a top plate 1 is fixed on the top of the explosion-proof tube 10 in a laminating manner, an adjusting rod 14 penetrating through the top of the explosion-proof tube 10 and the top plate 1 is fixed on the top of the guide plate 3, and the top of the explosion-proof pipe 10 and the top plate 1 are both provided with through openings for the adjusting rod 14 to pass through, the adjusting rod 14 is a threaded rod, and a locking nut 13 which is sleeved on the adjusting rod 14 in a thread adaptive manner is fixed at the top of the top plate 1.

In this embodiment, a rubber ring 9 is fixedly arranged in the bayonet, and an opening matched with the convex strip is formed in the rubber ring 9. Rubber ring 9 can be inseparabler and the laminating of sand grip, realize the better sealed of 8 below cavities of aluminium lamina membranacea.

In this embodiment, the bottom plate 11 is provided with an annular recess for mounting the aluminum diaphragm plate 8, the annular recess is provided with a gasket 7 pressed on the aluminum diaphragm plate 8, and the corresponding bolt 2 sequentially penetrates through the gasket 7, the aluminum diaphragm plate 8 and the bottom plate 11. The gasket 7 can press the periphery of the aluminum diaphragm 8, and facilitates the close attachment of the periphery of the aluminum diaphragm 8.

In this embodiment, guide rods 5 corresponding to the springs 4 one by one and penetrating through the springs 4 are fixed on the upper end surface of the bottom plate 11, and the guide rods 5 sequentially penetrate through the axes of the guide plate 3 and the adjusting rod 4 and extend to the upper part of the adjusting rod 4. On one hand, the spring 4 can be ensured to be in a vertical state, and the upper end of the spring 4 is prevented from being separated from the guide plate 3; on the other hand, when the pulverized coal in the chamber reaches certain dangerous pressure and needs to be decompressed properly, the bottom plate 11 is impacted to move upwards, the guide rod 5 moves upwards along with the impact, and related personnel can see that the upper end of the guide rod 5 obviously moves upwards, so that the corresponding decompression operation in the explosion-proof valve can be known, and the application is convenient.

In this embodiment, the width of the guide plate 3 is greater than the diameter of the adjustment rod 14. It is ensured that the guide plate 3 is located inside the explosion proof tube 10, preventing the guide plate 3 from moving above the top plate 1 under the reaction force of the spring 4.

The specific action process of the safe flame-retardant explosion-proof valve of the fan coal mill is as follows:

with the branch pipe and the fan coal pulverizer intercommunication of this safe fire-retardant explosion-proof valve, the pretightning force of the 4 spring of good adjustment in advance, concrete operation is: the adjusting rod 14 is rotated to move up and down under the matching of the locking nut 13, when the adjusting rod 14 moves up, the length of the spring 4 is increased, the elasticity is smaller, and the corresponding dangerous pressure is smaller; when the adjusting lever 14 is moved downwards, the length of the spring 4 is reduced, the spring force is greater, and the corresponding dangerous pressure is greater.

After the fan coal mill works, when the coal dust in the cabin reaches certain dangerous pressure (pressure which is not enough to directly break through the aluminum diaphragm plate 8), the coal dust can generate an upward pushing force on the bottom plate 11, if the pushing force is greater than the elastic force of the spring 4 at the moment, the bottom plate 11 can be pushed to move upwards, once the bayonet on the bottom plate 11 is separated from the convex strip on the support plate 12, the coal dust can enter the main body part of the explosion-proof pipe 10 through the gap between the bottom plate 11 and the support plate 12, along with the rising of the bottom plate 11, the spring 4 is further compressed, the elastic force is gradually increased, once the pressure of the coal dust in the cabin is less than the elastic force of the spring 4, the bottom plate 11 moves downwards under the counter-acting force of the spring 4, the bayonet on the bottom plate 11 is re-clamped with the convex strip on the support plate 12, and then one-time decompression is completed, the workload of the aluminum diaphragm, the replacement frequency is reduced, and the application efficiency is improved.

According to the above, the utility model can properly decompress the pulverized coal when the pulverized coal in the cabin reaches a certain dangerous pressure by utilizing the scalability of the spring, thereby preventing the pulverized coal from burning and exploding, playing a role of safety protection, reducing the workload of the aluminum diaphragm plate, being beneficial to prolonging the service life of the aluminum diaphragm plate, reducing the replacement times of the aluminum diaphragm plate and improving the application efficiency; and the pretightening force of the spring is adjustable, so that the device can be suitable for various requirements.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. A safe flame-retardant explosion-proof valve of a fan coal mill comprises an explosion-proof pipe (10), a branch pipe connected to the middle of the bottom of the explosion-proof pipe (10) and an aluminum membrane plate (8) arranged at the communication position of the branch pipe and the explosion-proof pipe (10); the anti-explosion pipe is characterized in that a supporting plate (12) is arranged on the inner bottom of the anti-explosion pipe (10) in a laminating mode, the supporting plate (12) is fixedly connected with the anti-explosion pipe (10) through a bolt (2), a through hole corresponding to the pipe orifice of the branch pipe is formed in the part, aligned with the branch pipe, of the supporting plate (12), and the aluminum membrane plate (8) is located above the supporting plate (12); the aluminum diaphragm plate (8) is provided with a base plate (11) which is connected above a support plate (12) in a clamping manner in the circumferential direction, the aluminum diaphragm plate (8) is fixed on the base plate (11) through bolts (2), a circle of raised lines surrounding the through hole is fixed on the upper end face of the support plate (12), a bayonet matched with the raised lines is arranged on the bottom face of the base plate (11), two vertically arranged springs (4) are fixed on two sides of the upper end face of the base plate (11) corresponding to two end sides of the explosion-proof pipe (10), a guide plate (3) is arranged at the upper end of each spring (4), a top plate (1) is fixed on the explosion-proof pipe (10) in a top attaching manner, an adjusting rod (14) penetrating through the top of the explosion-proof pipe (10) and the top plate (1) is fixedly connected to the top of the guide plate (3), and penetrating holes for the adjusting rod (14) to penetrate through are arranged on the top of the explosion-proof pipe (10) and the top plate (1), the adjusting rod (14) is a threaded rod, and a locking nut (13) which is sleeved on the adjusting rod (14) in a thread adaptive manner is fixed at the top of the top plate (1).

2. The safe flame-retardant explosion-proof valve for the fan coal mill according to claim 1, wherein a rubber ring (9) is fixedly arranged in the clamping opening, and the rubber ring (9) is provided with an opening matched with the raised strip.

3. The safe flame-retardant explosion-proof valve for the fan coal mill is characterized in that the bottom plate (11) is provided with an annular notch for mounting the aluminum diaphragm plate (8), a gasket (7) pressed on the aluminum diaphragm plate (8) is arranged in the annular notch, and the corresponding bolt (2) penetrates through the gasket (7), the aluminum diaphragm plate (8) and the bottom plate (11) in sequence.

4. The safe flame-retardant explosion-proof valve for the fan coal mill is characterized in that guide rods (5) which correspond to the springs (4) in a one-to-one mode and penetrate through the inner sides of the springs (4) are fixed on the upper end face of the bottom plate (11), and the guide rods (5) penetrate through the axes of the guide plate (3) and the adjusting rod (14) in sequence and extend above the adjusting rod (14).

5. The safe flame-retardant explosion-proof valve for the fan coal mill according to claim 1, wherein the width of the guide plate (3) is larger than the diameter of the adjusting rod (14).