CN202852035U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN202852035U CN202852035U CN 201220561371 CN201220561371U CN202852035U CN 202852035 U CN202852035 U CN 202852035U CN 201220561371 CN201220561371 CN 201220561371 CN 201220561371 U CN201220561371 U CN 201220561371U CN 202852035 U CN202852035 U CN 202852035U
- Authority
- CN
- China
- Prior art keywords
- valve
- gland
- gate valve
- sealing
- valve gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A gate valve mainly solves the problem that an existing gate valve is not ideal in sealing effect under a high pressure state and is characterized in that an inclined face is arranged at the radial position of a valve core, the inclined face and the inner wall of a valve body can form a sealing cavity, a sealing ring is arranged in the sealing cavity, the inner lateral side of the lower portion of the sealing ring is attached to the inclined face of the valve cover, the outer lateral side of the lower portion of the sealing ring is attached to the inner wall of the valve body, a press cover is arranged on the upper side of the sealing ring, and the press cover, the sealing ring and the valve cover are fixed through connection parts. The valve cover seal of the gate valve is of a sealing ring abutting type structure, the valve rod filler seal is of a V-shaped spring sealing ring structure, and the sealing effect of the gate valve is greatly enhanced through the sealing structures.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of gate valve.
Background technique
The open-shut device of gate valve is flashboard, and moving direction and the flow direction of flashboard are perpendicular, and gate valve can only be made standard-sized sheet and complete shut-down, can not do to regulate and throttling.Flashboard has two sealing surfaces, and two sealing surfaces of the most frequently used pattern gate valve form wedge shape, key groove is different with the valve parameter.
Gate valve is selected different materials, can be applicable to respectively the mediums such as water, steam, oil product, nitric acid, acetic acid, Oxidant, urea, and uses more at petroleum pipeline.In most cases, gate valve is under the high pressure conditions, if sealing effect is undesirable, will cause medium to be revealed.
The model utility content
In order to overcome the deficiency of background technique, the utility model provides a kind of gate valve, has mainly solved existing gate valve in the undesirable problem of high pressure conditions lower seal effect.
The technological scheme that the utility model adopts is: comprise valve body, flashboard, valve rod, valve gap, operating device, valve gap is positioned at valve body, stem lower portion is passed valve gap and is connected with flashboard, valve rod top is connected with operating device, valve gap radially locates to be provided with the inclined-plane, this inclined-plane and valve interior wall consist of Seal cage, be provided with seal ring in the described Seal cage, fit in sealing circle lower inside surface and valve gap inclined-plane, lower outside face and valve interior wall are fitted, the seal ring upside is provided with gland, and described gland fixes gland, seal ring, valve gap three by link.
Be provided with pressure ring between described gland and the seal ring, the lower end surface of described pressure ring is provided with the projection that cross section is V-arrangement, and the groove that the upper-end surface of described seal ring should be V-arrangement mutually matches with projection.
Described gland is pendant collet.
Be provided with the spring sealed circle of V-type between described valve rod and the valve gap, sealing circle top is provided with gland, and gland top is provided with pressing plate, and described pressing plate is connected by link with valve gap.
Described link is bolt (16).
And be provided with belleville spring between the nut that matches of bolt and the pressing plate.
The beneficial effects of the utility model are: seal ring top-closed structure structure is adopted in the valve bonnet seal of this gate valve, and the spring sealed coil structures of stem packing sealing employing V-type, and both sealing configurations have strengthened the sealing effect of gate valve greatly.
Description of drawings
Fig. 1 is sectional view of the present utility model.
Fig. 2 is the structural representation of the spring sealed circle 11 of V-type among Fig. 1.
Fig. 3 is the structural representation of primary seal circle 7 among Fig. 1.
1-valve body among the figure, 2-flashboard, 3-valve rod, 4-valve gap, 5-operating device, 6-Seal cage, 7-seal ring, 8-pressure ring, 9-gland, 10-link, the spring sealed circle of 11-V-type, 12-gland, 13-pressing plate, 14-nut, 15-belleville spring, 16-bolt.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further:
Such as Fig. 1 in conjunction with Fig. 2, shown in Figure 3, a kind of gate valve, comprise valve body 1, flashboard 2, valve rod 3, valve gap 4, operating device 5, valve gap 4 is positioned at valve body 1, valve rod 3 bottoms are passed valve gap 4 and are connected with flashboard 2, valve rod 3 tops are connected with operating device 5, valve gap 4 radially locates to be provided with the inclined-plane, this inclined-plane and valve body 1 inwall consist of Seal cage 6, be provided with seal ring 7 in the described Seal cage 6, seal ring 7 is metal o-ring, can guarantee sealing in high temperature media, fits in sealing circle 7 lower inside surface and valve gap 4 inclined-planes, lower outside face and valve body 1 inwall are fitted, seal ring 7 upsides are provided with gland 9, and this gland 9 is pendant collet, and described gland 9 makes gland 9 by link 10, seal ring 7, valve gap 4 threes fix.Be provided with pressure ring 8 between described gland 9 and the seal ring 7, the lower end surface of described pressure ring 8 is provided with the projection that cross section is V-arrangement, the groove that the upper-end surface of described seal ring 7 should be V-arrangement mutually matches with projection, can push seal ring from the top of seal ring 7 like this, further strengthen sealing effect.
In the present embodiment, operating device 5 is handwheel, can certainly be hydraulic pressure or pneumatic.When rotating handwheel 5, after flashboard 2 is opened, in the MEDIA FLOW inlet valve body 1, medium has the pressure that presses to valve gap 4 bottoms, this moment, pressure was passed to valve gap 4 inclined-planes by valve gap 4 bottoms, seal ring 7 just has been subject to the extruding force on valve gap 4 inclined-planes like this, is subject to simultaneously the opposition of valve body 1 inwall, causes seal ring 7 distortion wedgings to play seal action.
Be provided with the spring sealed circle 11 of V-type between described valve rod 3 and the valve gap 4, sealing circle 11 tops are provided with gland 12, gland 12 tops are provided with pressing plate 13, and described pressing plate 13 is connected by link 10 with valve gap 4, and the sealing between valve rod 3 and the valve gap 4 is increased greatly.
Described link 10 is bolt.And be provided with belleville spring 15 between the nut 14 that matches of bolt 16 and the pressing plate 13, to reach the reliability of valve rod 3 sealings.
Claims (6)
1. gate valve, comprise valve body (1), flashboard (2), valve rod (3), valve gap (4), operating device (5), valve gap (4) is positioned at valve body (1), valve rod (3) bottom is passed valve gap (4) and is connected with flashboard (2), valve rod (3) top is connected with operating device (5), it is characterized in that: valve gap (4) radially locates to be provided with the inclined-plane, this inclined-plane and valve body (1) inwall consists of Seal cage (6), be provided with seal ring (7) in the described Seal cage (6), fit in sealing circle (7) lower inside surface and valve gap (4) inclined-plane, lower outside face and valve body (1) inwall is fitted, seal ring (7) upside is provided with gland (9), and described gland (9) makes gland (9) by link (10), seal ring (7), valve gap (4) three fixes.
2. gate valve according to claim 1, it is characterized in that: be provided with pressure ring (8) between described gland (9) and the seal ring (7), the lower end surface of described pressure ring (8) is provided with the projection that cross section is V-arrangement, and the groove that the upper-end surface of described seal ring (7) should be V-arrangement mutually matches with projection.
3. gate valve according to claim 1 and 2 is characterized in that: described gland (9) is pendant collet.
4. gate valve according to claim 1, it is characterized in that: be provided with the spring sealed circle of V-type (11) between described valve rod (3) and the valve gap (4), sealing circle (11) top is provided with gland (12), gland (12) top is provided with pressing plate (13), and described pressing plate (13) is connected by link (10) with valve gap (4).
5. gate valve according to claim 4, it is characterized in that: described link (10) is bolt (16).
6. gate valve according to claim 5 is characterized in that: and be provided with belleville spring (15) between the nut (14) that matches of bolt (16) and the pressing plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561371 CN202852035U (en) | 2012-10-29 | 2012-10-29 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561371 CN202852035U (en) | 2012-10-29 | 2012-10-29 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852035U true CN202852035U (en) | 2013-04-03 |
Family
ID=47983240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561371 Expired - Lifetime CN202852035U (en) | 2012-10-29 | 2012-10-29 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775666A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | Gate valve |
-
2012
- 2012-10-29 CN CN 201220561371 patent/CN202852035U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775666A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | Gate valve |
| CN103775666B (en) * | 2013-12-30 | 2016-03-16 | 宁波市天基隆智控技术有限公司 | Gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |