CN210265893U

CN210265893U - Pneumatic dome valve

Info

Publication number: CN210265893U
Application number: CN201921111169.9U
Authority: CN
Inventors: 王洋
Original assignee: Zhuozhou Fenghe Mechanical Equipment Co Ltd
Current assignee: Zhuozhou Fenghe Mechanical Equipment Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-07
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a pneumatic dome valve, which comprises a valve body, an upper flange and a cylinder, wherein the upper flange is positioned above the valve body, the middle part of the upper flange is provided with a through hole, the cylinder is fixed on the side wall of the valve body, a spherical valve core is arranged inside the valve body, lugs at two ends of the valve core are connected with a driving shaft fixed in fixing holes at two sides of the valve body, and the outside of the driving shaft is connected with a piston rod of the cylinder through a rotating arm; the outer side of the valve core is sleeved with a sealing ring, a lining ring and a plug ring which are mutually connected, and the inner surface of the upper flange is provided with a limit groove matched with the lining ring, the plug ring and the sealing ring; the plug ring is connected with the inner edge of the valve body through a first fixing surface and is connected with the upper flange through a second fixing surface. The utility model adopts the above structure pneumatic dome valve, simple structure, during the case action and between the sealing washer running resistance is little, long service life.

Description

Pneumatic dome valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a pneumatic dome valve.

Background

The dome valve is usually applied to pipelines and tanks for blowing or conveying gas and solid phases to realize the functions of cutting off or closing. The blanking dome valve enables accumulated ash in the ash buckets to fall into the bin pump in a timed and quantitative mode, and the bin pump of each ash bucket is provided with the blanking dome valve. Once the dome valve is out of order, if the treatment is not timely, the accumulated dust cannot be output, the material level in the dust hopper is higher and higher, an alarm can be given after the dust hopper passes through the material level meter, the dust hopper can be seriously burst or the electric field can be jacked off, and even the shutdown accident of a unit can be caused.

In the prior art, the dome valve is sealed mainly by combining an inner spherical surface with an inflatable air bag surface, and air is rapidly fed and discharged through an air inlet and outlet on the side surface of the dome valve, so that the air bag is expanded and contracted. The sealing form has short service life and cannot meet the service life under severe working condition environments. The soft seal of the air bag is easy to age, break and other phenomena under the high temperature condition, so that the air bag can not be used finally.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pneumatic dome valve, simple structure, during the case action and between the sealing washer running resistance is little, long service life.

In order to achieve the purpose, the utility model provides a pneumatic dome valve, which comprises a valve body, an upper flange and a cylinder, wherein the upper flange is positioned above the valve body, the middle part of the upper flange is provided with a through hole, the cylinder is fixed on the side wall of the valve body, a spherical valve core is arranged inside the valve body, lugs at two ends of the valve core are connected with a driving shaft fixed in fixing holes at two sides of the valve body, and the outside of the driving shaft is connected with a piston rod of the cylinder through a rotating arm;

the outer side of the valve core is sleeved with a sealing ring, a lining ring and a plug ring which are mutually connected, and the inner surface of the upper flange is provided with a limit groove matched with the lining ring, the plug ring and the sealing ring;

the plug ring is connected with the inner edge of the valve body through a first fixing surface and connected with the upper flange through a second fixing surface, the first fixing surface and the second fixing surface are circular, the first fixing surface is smaller than the second fixing surface, the arc of the inner side wall of the first fixing surface is matched with the arc of the outer side of the valve core, the arc surface of the inner side of the second fixing surface is connected with the sealing ring, the circle diameter of the inner side arc of the first fixing surface is smaller than the circle diameter of the inner side arc of the second fixing surface, the groove of the outer edge of the sealing ring is provided with the lining ring, and the lining ring is located on the upper surface of the plug ring.

Preferably, an air joint on the shell of the air cylinder is connected with an in-place switch inside the shell of the air cylinder, the in-place switch is located at the maximum position of the extension displacement of the piston rod, the air joint is connected with the sealing ring, and the sealing ring is a pneumatic sealing ring.

Preferably, the rotating arm is connected with the driving shaft through a bayonet, and the driving shaft is connected with the hanging lug through a bayonet.

Preferably, the inner spherical surface of the valve core is provided with reinforcing ribs, the reinforcing ribs comprise a first reinforcing rib and a second reinforcing rib which are criss-cross, and the first reinforcing rib is connected with the hanging lug.

Preferably, the bottom of the valve body is provided with a mounting disc, and the size of the mounting disc is larger than that of the upper flange.

Therefore, the utility model adopts the above structure a pneumatic dome valve, simple structure, during the case action and between the sealing washer running resistance is little, long service life.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a front view of an embodiment of a pneumatic dome valve of the present invention;

FIG. 2 is a bottom view of an embodiment of a pneumatic dome valve of the present invention;

FIG. 3 is a schematic view of an embodiment of a cartridge in a pneumatic dome valve of the present invention;

FIG. 4 is a schematic view of an embodiment of a seal ring in a pneumatic dome valve of the present invention;

figure 5 is a cross-sectional view of an embodiment of a seal ring in a pneumatic dome valve of the present invention.

Reference numerals

1. A valve body; 2. an upper flange; 3. a cylinder; 4. a valve core; 5. a drive shaft; 6. a rotating arm; 7. a piston rod; 8. a seal ring; 9. a liner ring; 10. a plug ring; 11. a first fixing surface; 12. a second stationary surface; 13. a gas joint; 14. an in-place switch; 15. a first reinforcing rib; 16. a second reinforcing rib; 17. and (7) mounting a disc.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 is the utility model relates to a front view of pneumatic dome valve embodiment, fig. 2 is the utility model relates to a bottom view of pneumatic dome valve embodiment, fig. 3 is the utility model relates to a schematic diagram of case embodiment in the pneumatic dome valve, fig. 4 is the utility model discloses a schematic diagram of sealing washer embodiment in the pneumatic dome valve, fig. 5 is the utility model relates to a cross-sectional view of sealing washer embodiment in the pneumatic dome valve, as shown in the figure, a pneumatic dome valve, including valve body 1, upper flange 2 and cylinder 3, upper flange 2 is located the top of valve body 1, and the middle part of upper flange 2 is equipped with the through-hole, and the bottom of valve body 1 is equipped with mounting disc 17, and upper flange 2 and mounting disc 17 have realized the connection at dome valve both ends. The size of the mounting plate 17 is larger than the size of the upper flange 2, and the mounting plate 17 provides support for the whole.

A spherical valve core 4 is arranged in the valve body 1, lugs at two ends of the valve core 4 are connected with a driving shaft 5 fixed in fixing holes at two sides of the valve body 1, the driving shaft 5 is connected with the lugs through clamping pins, and the driving shaft 5 rotates to drive the lugs to rotate, so that the rotation of the valve core 4 is realized. The outside of the driving shaft 5 is connected with a piston rod 7 of the cylinder 3 through a rotating arm 6, the cylinder 3 provides power for the rotating arm 6 through the piston rod 7, the rotating arm 6 is connected with the driving shaft 5 through a bayonet, and the rotating arm 6 can drive the driving shaft 5 to rotate. The cylinder 3 is fixed on the side wall of the valve body 1, and the valve body 1 provides support for the cylinder 3. When the valve is used, the cylinder 3 controls the piston rod 7 to reciprocate, and the piston rod 7 drives the driving shaft 5 to rotate through the rotating arm 6, so that the valve core 4 is opened and closed.

The interior sphere of case 4 is equipped with the strengthening rib, and the strengthening rib includes vertically and horizontally staggered's first strengthening rib 15 and second strengthening rib 16, and first strengthening rib 15 is connected with the hangers, and setting up of strengthening rib has strengthened holistic intensity, has prolonged life.

The outside cover of case 4 is equipped with interconnect's sealing washer 8, backing ring 9 and cock ring 10, and the internal surface of going up flange 2 is equipped with the spacing groove that matches with backing ring 9, cock ring 10 and sealing washer 8, goes up flange 2 with backing ring 9, cock ring 10 and sealing washer 8 zonulae occludens in inside, reduces the space between the spare part.

The plug ring 10 is connected with the inner edge of the valve body 1 through the first fixing surface 11 and connected with the upper flange 2 through the second fixing surface 12, the plug ring 10 achieves connection of the valve body 1 and the upper flange 2, and sealing performance between the valve body 1 and the upper flange 2 is enhanced. The first and

second fixing surfaces

11, 12 are both circular and the first fixing surface 11 is smaller than the second fixing surface 12 so that the plug ring 10 is stably attached inside the dome valve. The arc of 11 inside walls of first stationary plane matches with the arc in the 4 outsides of case, and the inboard arcwall face of second stationary plane 12 is connected with sealing washer 8, and the inboard arc place circle diameter of first stationary plane 11 is less than the inboard arc place circle diameter of second stationary plane 12, and the inside wall of first stationary plane 11 provides the support for case 4, and second stationary plane 12 provides the support for sealing washer 8. The groove on the outer edge of the sealing ring 8 is provided with a lining ring 9, the lining ring 9 is positioned on the upper surface of the plug ring 10, the stable connection of the lining ring 9 is ensured, and the sealing strength of the sealing ring 8 is ensured.

The air joint 13 on the shell of the air cylinder 3 is connected with the in-place switch 14 in the shell of the air cylinder 3, the in-place switch 14 is positioned at the maximum extension displacement position of the piston rod 7, when the valve core 4 is closed, the piston rod 7 of the air cylinder 3 extends to the maximum displacement position, and at the moment, the in-place switch 14 is triggered. The air joint 13 is connected with the sealing ring 8, the sealing ring 8 is a pneumatic sealing ring, the sealing ring 8 is directly inflated, and the sealing of the sealing ring 8 on the valve core 4 is ensured. The middle part of case 4 is connected with sealing washer 8, and after sealing washer 8 aerifyd, sealing washer 8 zonulae occludens is in the middle part of case 4, guarantees its leakproofness. Because the spherical end of the valve core 4 is connected with the plug ring 10, the plug ring 10 is tightly connected with the valve core 4 and provides support for the valve core 4, the friction between the valve core 4 and the sealing ring 8 is reduced, namely, the running resistance brought by the sealing ring 8 is reduced while the sealing performance of the valve core 4 is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a pneumatic dome valve, includes valve body, upper flange and cylinder, the upper flange is located the top of valve body, the middle part of upper flange is equipped with through-hole, its characterized in that: the air cylinder is fixed on the side wall of the valve body, a spherical valve core is arranged in the valve body, lugs at two ends of the valve core are connected with a driving shaft fixed in fixing holes at two sides of the valve body, and the outside of the driving shaft is connected with a piston rod of the air cylinder through a rotating arm;

2. A pneumatic dome valve as set forth in claim 1 wherein: the pneumatic sealing device comprises a cylinder, a piston rod, a sealing ring, a pneumatic sealing ring and a pneumatic connector, wherein the cylinder is arranged in a shell of the cylinder, the pneumatic connector on the cylinder shell is connected with an in-place switch in the shell of the cylinder, the in-place switch is located at the maximum position of the extension displacement of the piston rod, the pneumatic connector is connected with the sealing ring, and the sealing ring is the.

3. A pneumatic dome valve as set forth in claim 1 wherein: the rotating arm is connected with the driving shaft through a bayonet lock, and the driving shaft is connected with the hanging lug through the bayonet lock.

4. A pneumatic dome valve as set forth in claim 1 wherein: the inner spherical surface of the valve core is provided with reinforcing ribs, the reinforcing ribs comprise first reinforcing ribs and second reinforcing ribs which are criss-cross, and the first reinforcing ribs are connected with the hanging lugs.

5. A pneumatic dome valve as set forth in claim 1 wherein: the bottom of the valve body is provided with a mounting disc, and the size of the mounting disc is larger than that of the upper flange.