CN213982232U - Pneumatic air valve for flue gas - Google Patents

Abstract

The utility model provides a pneumatic air valve for flue gas, the utility model relates to the technical field of pneumatic air valves, a pneumatic air valve for flue gas, which comprises a cylinder body, a valve body and a bottom block, wherein the cylinder body is arranged at the top of the valve body, the top of the cylinder body is provided with an air inlet communicated with the inside of the cylinder body, the left side and the right side of the inner wall of the cylinder body are both provided with chutes, the tops of the inner walls of the chutes are both fixed with cushion pads, the bottoms of the inner walls of the chutes are both provided with notches, springs are fixed in the notches, and the upper ends of the springs extend out of the notches; the bottom of the inner wall of the sliding groove is provided with an annular groove, the notch is positioned at the inner side of the annular groove, the upper end of the spring is sleeved with a moving pipe, and the lower end of the moving pipe extends into the annular groove and is in sliding connection with the annular groove; the beneficial effects of the utility model reside in that: the piston can be prevented from rigidly colliding with the top of the inner wall of the sliding groove or the bottom of the inner wall, so that the service life of the piston can be prolonged, and the dust removing work of the filter screen is facilitated for workers to prevent the filter screen from being blocked and affecting the emission of smoke.

Description

Pneumatic air valve for flue gas

Technical Field

The utility model belongs to the technical field of pneumatic blast gate technique and specifically relates to a pneumatic blast gate for flue gas is related to.

Background

The pneumatic air valve adopts a top-mounted structure, connecting bolts of the valve body are reduced under the conditions of high pressure and large caliber, the reliability of the valve is enhanced, and the influence of the dead weight of the system on the normal work of the valve can be overcome. The pneumatic air valve is widely applied to the coal chemical industry, the petrochemical industry, the rubber, the papermaking, the pharmacy and other pipelines as the flow dividing and converging or flow direction switching device of the medium.

At present, be used for the pneumatic blast gate of flue gas, its inside is equipped with piston and spout, the piston slides in the spout, easy direct and spout inner wall top or inner wall bottom rigid collision when piston longitudinal sliding, and then shorten the life of piston easily, be accompanied with the dust in the flue gas in addition, easy adhesion is on the filter screen in pneumatic blast gate, it carries out the deashing work to the filter screen regularly to need the staff, however current pneumatic blast gate, the filter screen deashing operation degree of difficulty is big, inconvenient staff carries out the deashing to the filter screen.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pneumatic blast gate for flue gas can avoid piston and spout inner wall top or inner wall bottom rigidity collision to can prolong the life of piston, the staff of being convenient for carries out the deashing work to the filter screen, in order to prevent that the filter screen from blockking up and influencing the emission of flue gas, in order to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a pneumatic air valve for smoke comprises an air cylinder body, a valve body and a bottom block;

the cylinder body is arranged at the top of the valve body, the top of the cylinder body is provided with an air inlet communicated with the inside of the cylinder body, the left side and the right side of the inner wall of the cylinder body are respectively provided with a sliding chute, the top of the inner wall of each sliding chute is fixed with a cushion pad, the bottom of the inner wall of each sliding chute is provided with a notch, a spring is fixed in each notch, and the upper end of each spring extends out of each notch;

the bottom of the inner wall of the sliding groove is provided with an annular groove, the notch is positioned on the inner side of the annular groove, the upper end of the spring is sleeved with a moving pipe, the lower end of the moving pipe extends into the annular groove and is in sliding connection with the annular groove, and the upper end of the moving pipe is fixed with a hemispherical block;

the bottom block welds in the valve body bottom, the bottom block surface is link up there is the opening that is longitudinal distribution, the opening is narrow form under the width, just be equipped with the brush in the opening, the brush left and right sides all imbeds a plurality of brush hairs, just the welding of brush bottom has the brush holder.

Preferably, a piston is arranged in the cylinder body, and the left end and the right end of the piston are respectively connected with the two sliding grooves in a sliding manner.

Preferably, the bottom block is provided with a base below, a spiral pipe is welded above the base, the outer wall of the bottom block is provided with threads, and the spiral pipe is connected with the bottom block through the threads.

Preferably, the inner side of the upper end of the spiral pipe is provided with a circular groove, a sealing ring is embedded in the circular groove, and the inner wall of the sealing ring is in contact with the outer wall of the bottom block.

Preferably, the square opening that distributes about the valve body lower extreme link up has, the square opening communicates with each other with the opening, just the filter screen has all been embedded into about the square opening is inside, the brush hair is located the filter screen inboard.

Preferably, a through hole is formed in the middle of the top of the valve body, the lower end of the through hole penetrates through the top of the inner wall of the square opening, and a piston rod is fixed at the bottom of the piston.

Preferably, the lower end of the piston rod extends into the through hole, a sealing block is fixed at the bottom of the piston rod, and the height of the sealing block is larger than the distance from the upper surface of the brush to the lower end of the through hole.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the pneumatic air valve for the flue gas, when the piston moves to the lower part of the inner part of the sliding groove, the piston can be firstly contacted with the hemispherical block and then pressed down, the hemispherical block can press down the moving pipe under the pressure, the moving pipe can slide down in the circular groove, and meanwhile, the spring is compressed, so that the downward impact force of the piston can be buffered under the action of the elastic force of the spring, the rigid collision between the piston and the bottom of the inner wall of the sliding groove can be avoided, and the service life of the piston can be prolonged;

when the piston slides upwards, the cushion pad is fixed at the top of the inner wall of the sliding groove and has elasticity, so that the piston elastically collides with the top of the inner wall of the sliding groove to protect the piston;

when the brush hair removed the square mouth in, the brush hair contacted with the filter screen inboard to can clean the dust on the filter screen, clean the in-process, the dust of sweeping down can drop in the opening, then arrange to the bottom block outside through the opening, operation process is simple, and the staff of being convenient for carries out the deashing work to the filter screen, in order to prevent that the filter screen from blockking up and influencing the emission of flue gas.

Drawings

Fig. 1 is a schematic view of the overall front sectional structure of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic view of a partial structure at B of fig. 1 according to the present invention.

The labels in the figure are: 1-a base; 2-a coil; 3-bottom block; 4-through opening; 5-a brush; 6-brush handle; 7-sealing ring; 8-filtering the net; 9-bristles; 10-a through hole; 11-a valve body; 12-a moving tube; 13-a hemispherical block; 14-a cylinder block; 15-air inlet; 16-a chute; 17-a piston; 18-a piston rod; 19-a sealing block; 20-notch; 21-a circular groove; 22-a spring; 23-buffer pad.

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, embodiments of the present invention will be further described;

a pneumatic air valve for smoke comprises a cylinder body 14, a valve body 11 and a bottom block 3;

the cylinder body 14 is arranged at the top of the valve body 11, the top of the cylinder body 14 is provided with an air inlet 15 communicated with the inside of the cylinder body, the left side and the right side of the inner wall of the cylinder body 14 are both provided with sliding chutes 16, the tops of the inner walls of the sliding chutes 16 are both fixed with cushion pads 23, the bottoms of the inner walls of the sliding chutes 16 are both provided with notches 20, springs 22 are fixed in the notches 20, and the upper ends of the springs 22 extend out of the notches 20;

the bottom of the inner wall of the sliding groove 16 is provided with an annular groove 21, the notch 20 is positioned on the inner side of the annular groove 21, the upper end of the spring 22 is sleeved with the moving pipe 12, the lower end of the moving pipe 12 extends into the annular groove 21 and is in sliding connection with the annular groove 21, and the upper end of the moving pipe 12 is fixed with a hemispherical block 13;

a piston 17 is arranged in the cylinder block 14, and the left end and the right end of the piston 17 are respectively connected with the two sliding chutes 16 in a sliding manner;

specifically, an air source is injected into an air inlet 15 at the top of the cylinder block 14, the air source enters the cylinder block 14 and pushes a piston 17 downwards, the left end and the right end of the piston 17 slide downwards in two sliding grooves 16 respectively, when the piston 17 moves to the lower part of the inside of the sliding grooves 16, the piston 17 contacts with a hemispherical block 13 firstly and then presses the hemispherical block 13, the hemispherical block 13 presses a moving pipe 12 downwards under pressure, the moving pipe 12 slides downwards in an annular groove 21, meanwhile, a spring 22 is compressed, the downward impact force of the piston 17 can be buffered under the elastic force of the spring 22, the rigid collision between the piston 17 and the bottom of the inner wall of the sliding groove 16 can be avoided, and the service life of the piston 17 can be prolonged;

when the piston 17 slides upwards, the cushion pad 23 is fixed at the top of the inner wall of the sliding groove 16, and the cushion pad 23 has elasticity, so that the piston 17 elastically collides with the top of the inner wall of the sliding groove 16 to protect the piston 17;

the bottom block 3 is welded at the bottom of the valve body 11, through holes 4 which are longitudinally distributed are arranged on the surface of the bottom block 3 in a penetrating manner, the through holes 4 are wide at the top and narrow at the bottom, brushes 5 are arranged in the through holes 4, a plurality of bristles 9 are embedded in the left side and the right side of each brush 5, and brush handles 6 are welded at the bottoms of the brushes 5;

a base 1 is arranged below the bottom block 3, a spiral pipe 2 is welded above the base 1, threads are formed in the outer wall of the bottom block 3, and the spiral pipe 2 is connected with the bottom block 3 through the threads;

a circular groove is formed in the inner side of the upper end of the spiral pipe 2, a sealing ring 7 is embedded in the circular groove, and the inner wall of the sealing ring 7 is in contact with the outer wall of the bottom block 3;

square openings distributed left and right are communicated with the through opening 4, filter screens 8 are embedded in the square openings on the left and right sides, and the bristles 9 are positioned on the inner sides of the filter screens 8;

specifically, the pneumatic air valve is used for discharging smoke, the filter screen 8 can filter the smoke, then dust is adhered to the surface of the filter screen 8, the filter screen 8 needs to be cleaned regularly to avoid the blockage of the filter screen 8, at the moment, a worker can rotate the spiral pipe 2 downwards, so that the screw tube 2 and the base 1 are separated from the bottom of the bottom block 3, then a worker can extend into the through hole 4 by hands and hold the brush handle 6 to move up and down, can drive the brush 5 and the brush hair 9 to move together, when the brush hair 9 moves into the square opening, the brush hair 9 is contacted with the inner side of the filter screen 8, thereby cleaning the dust on the filter screen 8, the cleaned dust can fall into the through hole 4 in the cleaning process, then the smoke is discharged to the outside of the bottom block 3 through the through hole 4, the operation process is simple, and workers can conveniently perform dust cleaning work on the filter screen 8 to prevent the filter screen 8 from being blocked to influence the discharge of smoke;

a through hole 10 is formed in the middle of the top of the valve body 11, the lower end of the through hole 10 penetrates through the top of the inner wall of the square opening, and a piston rod 18 is fixed at the bottom of the piston 17;

the lower end of the piston rod 18 extends into the through hole 10, a sealing block 19 is fixed at the bottom of the piston rod 18, and the height of the sealing block 19 is larger than the distance from the upper surface of the brush 5 to the lower end of the through hole 10;

specifically, when piston rod 18 moved down, can drive sealed piece 19 and remove to the square mouth direction, because sealed piece 19 highly be greater than brush 5 upper surface to the distance of through-hole 10 lower extreme, so when sealed piece 19 bottom contacted brush 5 upper surface, the inside left and right sides of square mouth is the separation, prevents from this the flue gas emission, otherwise, sealed piece 19 shifts up under the drive of piston rod 18 and keeps away from when brush 5, the square mouth is opened, the flue gas can be smoothly from the square mouth left hand to the square mouth right hand, realize the flue gas emission.

Claims (7)

1. A pneumatic air valve for flue gas, including cylinder block (14), valve body (11) and bottom block (3), its characterized in that:

the cylinder body (14) is arranged at the top of the valve body (11), the top of the cylinder body (14) is provided with an air inlet (15) communicated with the inside of the cylinder body, sliding chutes (16) are formed in the left side and the right side of the inner wall of the cylinder body (14), cushion pads (23) are fixed on the tops of the inner walls of the sliding chutes (16), notches (20) are formed in the bottoms of the inner walls of the sliding chutes (16), springs (22) are fixed in the notches (20), and the upper ends of the springs (22) extend out of the notches (20);

the bottom of the inner wall of the sliding groove (16) is provided with an annular groove (21), the notch (20) is positioned on the inner side of the annular groove (21), the upper end of the spring (22) is sleeved with a moving pipe (12), the lower end of the moving pipe (12) extends into the annular groove (21) and is in sliding connection with the annular groove, and the upper end of the moving pipe (12) is fixed with a hemispherical block (13);

bottom block (3) weld in valve body (11) bottom, bottom block (3) surface is link up has opening (4) that are longitudinal distribution, opening (4) are narrow form down wide, just be equipped with brush (5) in opening (4), brush (5) left and right sides all imbeds a plurality of brush hairs (9), just brush (5) bottom butt fusion has brush holder (6).

2. A pneumatic damper for flue gases according to claim 1, wherein: a piston (17) is arranged in the cylinder body (14), and the left end and the right end of the piston (17) are respectively in sliding connection with the two sliding grooves (16).

3. A pneumatic damper for flue gases according to claim 1, wherein: the base is characterized in that a base (1) is arranged below the bottom block (3), a solenoid (2) is welded above the base (1), threads are formed in the outer wall of the bottom block (3), and the solenoid (2) is connected with the bottom block (3) through the threads.

4. A pneumatic damper for flue gases according to claim 3, wherein: the inner side of the upper end of the spiral pipe (2) is provided with a circular groove, a sealing ring (7) is embedded in the circular groove, and the inner wall of the sealing ring (7) is in contact with the outer wall of the bottom block (3).

5. A pneumatic damper for flue gases according to claim 1, wherein: the square opening that distributes about valve body (11) lower extreme link up has, the square opening communicates with each other with opening (4), just right-hand left side of square opening inside all is embedded into has filter screen (8), brush hair (9) are located filter screen (8) inboardly.

6. A pneumatic damper for flue gases according to claim 2, wherein: a through hole (10) is formed in the middle of the top of the valve body (11), the lower end of the through hole (10) penetrates through the top of the inner wall of the square opening, and a piston rod (18) is fixed at the bottom of the piston (17).

7. A pneumatic damper for flue gases according to claim 6, wherein: the lower end of the piston rod (18) extends into the through hole (10), a sealing block (19) is fixed at the bottom of the piston rod (18), and the height of the sealing block (19) is larger than the distance from the upper surface of the brush (5) to the lower end of the through hole (10).

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