CN218094314U

CN218094314U - Pneumatic gate valve with good sealing performance

Info

Publication number: CN218094314U
Application number: CN202222300620.XU
Authority: CN
Inventors: 姜宏伟; 韩辉
Original assignee: Shandong Fengwei Environmental Protection Technology Co ltd
Current assignee: Shandong Fengwei Environmental Protection Technology Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-20
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to a pneumatic push-pull valve field discloses a pneumatic push-pull valve that leakproofness is good, comprising a main body, the up end center department of main part is provided with protective structure, the inside wall center department of main part is provided with the spread groove, the inside wall center department of main part is provided with two horizontal poles, two fixed connection is on two inside walls of main part around the horizontal pole around both ends difference, two be provided with the valve plate between the horizontal pole, the lower inner wall of spread groove is provided with seal structure by the lower extreme punishment respectively with two inside walls around with. The utility model discloses in, the lower inner wall of spread groove is provided with seal structure by the lower extreme punishment respectively with front and back both sides wall center, when the valve plate is closed and carry out butt joint between the recess on the closing plate sealed, and the spring on the closing plate lateral wall receives the compression simultaneously, thereby the power bounce-back that will receive according to the inertia of spring pushes up the closing plate on the lower extreme and the both sides wall of valve plate to play good sealed effect.

Description

Pneumatic gate valve with good sealing performance

Technical Field

The utility model relates to a pneumatic push-pull valve field especially relates to a good pneumatic push-pull valve of leakproofness.

Background

Gate valves are also known as hand knife gate valves. The knife gate valve is a valve with a flashboard and a valve seat which are always in close contact and sealed, the principle is that a round opening with the same drift diameter is formed in the flashboard, the round opening on the flashboard is completely separated from and matched with the drift diameter by opening and closing the flashboard, and the application range of the knife gate valve is expanded from the common field to more extensive various industries. Coal dressing, gangue discharge and slag discharge from mine power plants. The pneumatic gate valve mainly comprises a frame, a gate plate, a screw rod, a nut and other parts, compressed air is used as power, the direction of an air path is changed by reversing through an electromagnetic valve, a cylinder piston is pushed, the gate plate is driven to reciprocate along the horizontal direction, and the purpose of opening and closing the gate is achieved.

Through retrieval, chinese patent discloses a pneumatic gate valve (publication number: CN 206130266U) with good sealing performance, although grease can be injected into the through hole through the oil injection hole, the grease can not only lubricate the roller, but also fill the gaps among the valve plate, the through hole and the roller to achieve the sealing effect, but not all the use environments can be sealed by injecting the grease during actual use, so that the use environment is limited, meanwhile, the outer side of the pneumatic pump at the upper end is not provided with any protective structure, so that the pneumatic pump is easily damaged during use, normal use is affected, and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the good pneumatic push-pull valve of leakproofness that proposes, establish the protecting crust through the outside cover at the cylinder, with protecting crust fixed connection on the up end of main part, play fine protecting effect to the cylinder whole, the cylinder is avoided receiving the damage when using, the lower inner wall of spread groove respectively is provided with seal structure by the lower extreme punishment with front and back both sides wall center simultaneously, when the valve plate is closed and carry out butt joint between the recess on the closing plate and seal, the spring on the closing plate lateral wall receives the compression simultaneously, thereby the power rebound that will receive according to the inertia of spring pushes up the closing plate on the lower extreme and the both sides wall of valve plate, thereby play good sealed effect.

In order to achieve the above purpose, the utility model provides a following technical scheme: a pneumatic gate valve with good sealing performance comprises a main body, wherein a protective structure is arranged at the center of the upper end face of the main body, a connecting groove is formed in the center of the inner side wall of the main body, two cross rods are arranged at the center of the inner side wall of the main body, the front end and the rear end of each cross rod are fixedly connected to the front inner side wall and the rear inner side wall of the main body respectively, a valve plate is arranged between the two cross rods, a sealing structure is arranged on the lower inner wall of the connecting groove and on the positions, close to the lower ends, of the front inner side wall and the rear inner side wall of the connecting groove respectively, the protective structure comprises a sealing cover, a first fixing bolt, a fixing block, a third fixing bolt, a cylinder, a positioning block and a protective shell, a protective shell is arranged at the center of the upper end face of the main body, an air cylinder is arranged inside the protective shell, fixed blocks are connected to the positions, close to the lower ends, of the front side wall and the rear side wall of the protective shell respectively, third fixing bolts are arranged on the upper end faces of the two fixing blocks respectively, the lower ends of the sealing plates respectively penetrate through the upper end faces of the two fixing blocks, the sealing plates are in a threaded connection way, the sealing structure and a sealing plate, a sealing plate is provided with a groove arranged on the upper end face of the sealing plate, a groove is arranged on the upper end face of the sealing plate, and a sealing plate, a groove is arranged on the sealing ring is arranged on the sealing plate, and a groove arranged on the upper end face of the sealing plate respectively, and a sealing plate, and a groove arranged on the sealing plate respectively, the sealing plate, and a groove is arranged on the sealing plate respectively;

through the technical scheme, establish the protecting crust through the outside cover at the cylinder, with protecting crust fixed connection on the up end of main part, play fine safeguard effect to the cylinder is whole, avoid the cylinder to receive the damage when using, lean on lower extreme punishment to do not be provided with seal structure at the lower inner wall of spread groove and front and back both sides wall center simultaneously, when the valve plate is closed and carry out butt joint between the recess on the closing plate sealed, the spring on the closing plate lateral wall receives the compression simultaneously, thereby the power that will receive according to the inertia of spring is rebounded and is pushed up the closing plate on the lower extreme and the both sides wall of valve plate, thereby play good sealed effect.

Furthermore, a connecting block is arranged in the center of the upper end face of the valve plate, and the lower end of the connecting block is fixedly connected to the upper end face of the valve plate;

through above-mentioned technical scheme, set up to detachable the connection between valve plate and the valve rod, the structure on the valve rod is mainly used to connect to the connecting block, makes things convenient for dismouting at the back.

Furthermore, the output end of the air cylinder sequentially penetrates through the lower inner wall of the protective shell and the upper end face of the main body, the end part of the air cylinder is fixedly connected with a valve rod, the lower end of the valve rod is fixedly connected with a connecting piece, and the connecting piece is connected with the connecting block through a second fixing bolt;

through above-mentioned technical scheme, be connected through second fixing bolt between connecting piece and the connecting block, have easy dismounting, characteristics such as maintenance are simple.

Furthermore, sealing strips are respectively arranged at the centers of one side wall of each of the two cross rods;

through above-mentioned technical scheme, play and reduce the clearance between two horizontal poles and the valve plate lateral wall, improve holistic sealed effect.

Furthermore, the two fixing blocks are connected with the side wall of the protective shell in a welding mode;

through above-mentioned technical scheme, welded connection's stability is better, guarantees that the protecting crust can not produce when using and rock.

Further, the gap between the two cross rods is consistent with the thickness of the valve plate;

through above-mentioned technical scheme, the lateral wall cooperation sliding connection of valve plate plays good retaining effect between two horizontal poles, prevents that the valve plate from producing the skew when using.

Furthermore, the positioning block is made of sponge;

through above-mentioned technical scheme, the sponge has fine shock-absorbing capacity, stability when can effectual assurance inside cylinder uses.

Furthermore, the connecting piece is C-shaped;

through above-mentioned technical scheme, can be fine and the connecting block between the cooperation be connected, connect more stably.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, establish the protecting crust through the outside cover at the cylinder, with protecting crust fixed connection on the up end of main part, wholly play fine protecting effect to the cylinder, avoid the cylinder to receive the damage when using, increase its life indirectly, reduce the cost of maintenance and later maintenance.

2. The utility model discloses in, lean on lower extreme punishment to be provided with seal structure respectively through lower wall center in the lower inner wall of spread groove and front and back both sides wall, when the valve plate is closed and carry out butt joint between the recess on the closing plate and seal, the spring on the closing plate lateral wall receives the compression simultaneously, thereby bounce-back according to the power that the inertia of spring will receive pushes up the closing plate on the lower extreme and the both sides wall of valve plate, thereby play good sealed effect, the spring is rapid again when the valve plate lifts up resumes the former state, but have the advantage that does not influence the leakproofness in the repetitious usage process.

Drawings

Fig. 1 is an axonometric view of a pneumatic gate valve with good sealing performance provided by the utility model;

fig. 2 is a front sectional view of a pneumatic gate valve protection structure with good sealing performance provided by the utility model;

fig. 3 is a front sectional view of a pneumatic gate valve main body with good sealing performance provided by the utility model;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Illustration of the drawings:

1. sealing the cover; 2. a first fixing bolt; 3. connecting grooves; 4. a connecting member; 5. a second fixing bolt; 6. a cross bar; 7. a valve plate; 8. connecting blocks; 9. a valve stem; 10. a fixed block; 11. a third fixing bolt; 12. a cylinder; 13. positioning blocks; 14. a sealing strip; 15. a main body; 16. a seal ring; 17. a gasket; 18. sealing plates; 19. a spring; 20. and (4) a protective shell.

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. 1-4, the present invention provides an embodiment: the utility model provides a pneumatic push-pull valve that leakproofness is good, includes main part 15, and the up end center department of main part 15 is provided with protective structure, and the inside wall center department of main part 15 is provided with spread groove 3, and the inside wall center department of main part 15 is provided with two horizontal poles 6, and both ends difference fixed connection is provided with valve plate 7 around two horizontal poles 6 on two inside walls of main part 15 around two horizontal poles 6, and the lower inner wall of spread groove 3 is provided with seal structure by lower extreme punishment with two inside walls around with.

The protection structure comprises a sealing cover 1, a first fixing bolt 2, fixing blocks 10, third fixing bolts 11, a cylinder 12, a positioning block 13 and a protection shell 20, a protection shell 20 is arranged at the center of the upper end face of a main body 15, the cylinder 12 is arranged inside the protection shell 20, the fixing blocks 10 are respectively connected to the front side wall and the rear side wall of the protection shell 20 by the lower ends, the third fixing bolts 11 are respectively arranged on the upper end faces of the two fixing blocks 10, the lower ends of the two third fixing bolts 11 respectively penetrate through the upper end faces of the two fixing blocks 10, the end portions are respectively in threaded connection with the upper end face of the main body 15, the sealing cover 1 is arranged at the upper end of the protection shell 20, the sealing cover 1 is connected with the protection shell 20 through the first fixing bolts 2, the protection shell 20 has a good protection effect on the whole internal cylinder 12, the cylinder 12 is prevented from being damaged when in use, meanwhile, the positioning block 13 on the lower end face of the sealing cover 1 can prevent the cylinder 12 from shaking in use, the stability of the cylinder 12 in the use process is ensured, and the positioning block 13 has a good shock absorption effect.

The sealing structure comprises a sealing ring 16, a sealing gasket 17, a sealing plate 18 and a spring 19, the sealing plate 18 is arranged inside the connecting groove 3, the lower end of the sealing plate 18 is provided with the spring 19, the center of the upper end face of the sealing plate 18 is provided with a groove, the two inner side walls of the groove are respectively provided with the sealing gasket 17, the centers of the upper end face of the sealing plate 18 are respectively provided with the sealing ring 16 by the front edge and the rear edge, when the valve plate 7 is closed, the sealing plate 18 is in butt joint with the groove in the sealing plate 18, meanwhile, the spring 19 on the side wall of the sealing plate 18 is compressed, the sealing plate 18 is ejected on the lower end and the two side walls of the valve plate 7 according to the rebounding force of the spring 19, so that a good sealing effect is achieved, when the valve plate 7 is lifted, the spring 19 can rapidly recover the original shape, and the sealing structure has the advantage that the sealing performance is not influenced in the multi-use process.

The up end center department of valve plate 7 is provided with connecting block 8, the lower extreme fixed connection of connecting block 8 is on the up end of valve plate 7, the output of cylinder 12 runs through the lower inner wall of protecting crust 20 and the up end of main part 15 in proper order, and tip fixedly connected with valve rod 9, the lower extreme fixedly connected with connecting piece 4 of valve rod 9, the shape of connecting piece 4 is the C style of calligraphy, be connected through second fixing bolt 5 between connecting piece 4 and the connecting block 8, 6 a lateral wall center punishment of two horizontal poles do not are provided with sealing strip 14, all adopt welded connection between the lateral wall of two fixed blocks 10 and protecting crust 20, the clearance between two horizontal poles 6 is unanimous with the thickness of valve plate 7, the material sponge of locating piece 13.

The working principle is as follows: in the utility model, establish protecting crust 20 through the outside cover at cylinder 12, with protecting crust 20 fixed connection on the up end of main part 15, play fine safeguard effect to cylinder 12 is whole, avoid cylinder 12 to receive the damage when using, indirectly increase its life, reduce the cost of maintenance and later maintenance, two inside walls lean on the lower extreme punishment to be provided with seal structure simultaneously in the lower inner wall of spread groove 3 and front and back, when valve plate 7 closes and carry out butt joint between the recess on the closing plate 18 sealed, spring 19 on the closing plate 18 lateral wall receives the compression simultaneously, thereby bounce-back with the power that receives according to spring 19 inertia pushes up closing plate 18 on the lower extreme and the both sides wall of valve plate 7, thereby play good sealed effect, sealed pad 17 can further seal between valve plate 7 and closing plate 18, the effectual emergence leakage that prevents to use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a good pneumatic push-pull valve of leakproofness, includes main part (15), its characterized in that: a protective structure is arranged at the center of the upper end face of the main body (15), a connecting groove (3) is arranged at the center of the inner side wall of the main body (15), two cross rods (6) are arranged at the center of the inner side wall of the main body (15), the front end and the rear end of each of the two cross rods (6) are fixedly connected to the front inner side wall and the rear inner side wall of the main body (15) respectively, a valve plate (7) is arranged between the two cross rods (6), and sealing structures are arranged on the lower ends of the lower inner wall of the connecting groove (3) and the front inner side wall and the rear inner side wall respectively;

the protective structure comprises a sealing cover (1), first fixing bolts (2), fixing blocks (10), third fixing bolts (11), air cylinders (12), positioning blocks (13) and a protective shell (20), wherein the protective shell (20) is arranged at the center of the upper end face of a main body (15), the air cylinders (12) are arranged inside the protective shell (20), the fixing blocks (10) are respectively connected to the positions, close to the lower ends, of the front side wall and the rear side wall of the protective shell (20), the third fixing bolts (11) are respectively arranged on the upper end faces of the two fixing blocks (10), the lower ends of the two third fixing bolts (11) respectively penetrate through the upper end faces of the two fixing blocks (10), the end portions of the two third fixing bolts are respectively in threaded connection with the upper end face of the main body (15), the sealing cover (1) is arranged on the upper end of the protective shell (20), and the sealing cover (1) is connected with the protective shell (20) through the first fixing bolts (2);

the sealing structure comprises a sealing ring (16), a sealing gasket (17), a sealing plate (18) and a spring (19), the sealing plate (18) is arranged inside the connecting groove (3), the spring (19) is arranged at the lower end of the sealing plate (18), a groove is formed in the center of the upper end face of the sealing plate (18), the sealing gasket (17) is arranged on the two inner side walls of the groove respectively, and the sealing ring (16) is arranged at the edge of the front side and the back side of the center of the upper end face of the sealing plate (18).

2. The pneumatic gate valve with good sealing performance according to claim 1, is characterized in that: the valve plate is characterized in that a connecting block (8) is arranged in the center of the upper end face of the valve plate (7), and the lower end of the connecting block (8) is fixedly connected to the upper end face of the valve plate (7).

3. The pneumatic gate valve with good sealing performance according to claim 1, is characterized in that: the output of cylinder (12) runs through the up end of the lower inner wall of protecting crust (20) and main part (15) in proper order, and tip fixedly connected with valve rod (9), the lower extreme fixedly connected with connecting piece (4) of valve rod (9), be connected through second fixing bolt (5) between connecting piece (4) and connecting block (8).

4. The pneumatic gate valve with good sealing performance according to claim 1, is characterized in that: and sealing strips (14) are respectively arranged at the centers of one side wall of the two cross rods (6).

5. The pneumatic gate valve with good sealing performance according to claim 1, is characterized in that: and the two fixing blocks (10) are connected with the side wall of the protective shell (20) in a welding manner.

6. The pneumatic gate valve with good sealing performance according to claim 1, is characterized in that: the gap between the two cross rods (6) is consistent with the thickness of the valve plate (7).

7. The pneumatic gate valve with good sealing performance according to claim 1, wherein: the positioning block (13) is made of sponge.

8. A good-tightness pneumatic gate valve according to claim 3, characterized in that: the connecting piece (4) is C-shaped.