CN205559924U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN205559924U CN205559924U CN201620192274.XU CN201620192274U CN205559924U CN 205559924 U CN205559924 U CN 205559924U CN 201620192274 U CN201620192274 U CN 201620192274U CN 205559924 U CN205559924 U CN 205559924U
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- China
- Prior art keywords
- valve
- ring
- pad
- gate valve
- external diameter
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Abstract
The utility model discloses a gate valve, including valve gap, lid at the gland of valve gap upper end, run through the rotatable valve rod of gland, gate valve still further is used for on the valve rod valve rod along the holding ring of axial fixity on the valve gap including installing to and install the first sealing washer between gland and holding ring, be equipped with first gasket between holding ring and the first sealing washer, first gasket overcoat is equipped with the second sealing washer, and this gate valve has structure safe and reliable, sealing performance advantage such as good.
Description
[technical field]
This utility model relates to valve field, particularly to the gate valve of a kind of valve rod positioning and mounting structure improvement.
[background technology]
Gate valve is a kind of conventional valve, and opening and closing element is flashboard, and generally described gate valve includes valve gap, the cover plate being installed on valve gap and the valve rod running through cover plate and with the flashboard driven by valve rod.The direction of motion of flashboard is perpendicular with flow direction, by handwheel and the rotation of valve stem nut, the forward and back of the threaded engagement with ovable valve stem, thus realize rising or falling of the flashboard with valve rod linkage, and then reach the effect opened and closed, during this, locating ring is for fixing the relative position between valve rod with valve gap, valve rod is only capable of relative to valve gap rotate and can not valve gap relatively up and down, therefore, valve rod is the carrier transmitting lifting force during valve opening and closing, and cover plate is then subject to counteracting force when flashboard cuts out.Generally, between locating ring and cover plate, it is provided with sealing ring, easily damages sealing ring when locating ring rotates with valve rod, thus significantly lower service life and the reliability of gate valve.
In consideration of it, be necessary to design that a kind of structural safety is reliable, the gate valve of favorable sealing property to be to solve the problems referred to above.
【Utility model content]
It is reliable that technical problem to be solved in the utility model is to provide one to have structural safety, the gate valve of favorable sealing property.
Technical problem to be solved in the utility model is achieved through the following technical solutions: provide a kind of gate valve, including valve gap, cover the gland in valve gap upper end, run through the rotating valve rod of gland, described gate valve still further comprises the locating ring being installed on valve rod for being axially fixed on valve gap by valve rod, and the first sealing ring being arranged between gland and locating ring, it is provided with the first pad between described locating ring and the first sealing ring, outside described first pad, is arranged with the second sealing ring.
Further, described gate valve also includes the second pad being arranged between the first pad and locating ring, and described second pad has the external diameter identical with locating ring.
Further, the both sides up and down of described locating ring are separately installed with second pad.
Further, described first pad is that metal material is made, and the external diameter of described second pad is less than the external diameter of the first pad.
Further, described first sealing ring includes the O-ring seals of two formed objects, is provided with separation sleeve between said two O-ring seals.
Further, described second sealing ring is O-ring seals, and the external diameter of described second sealing ring is more than the external diameter of the first sealing ring.
Further, described locating ring is made up of the snap ring of two semicircular metal manufactures, and has the thickness more than the first pad at the axis direction of valve rod, and described valve rod is provided with the draw-in groove installing snap ring, and the external diameter of described locating ring is more than the external diameter of valve rod.
Compared to prior art, the gate valve disclosed by this utility model has the advantages such as reliable, the favorable sealing property of structural safety.
[accompanying drawing explanation]
Fig. 1 is the partial sectional view of the gate valve of prior art.
Fig. 2 is the phantom meeting gate valve of the present utility model.
[detailed description of the invention]
As shown in Figure 1, existing gate valve 200 is included valve gap 21 and is fixed on the gland 24 of valve gap 21 upper end by bolt 26, through collecting one valve rod 25 in the middle of described gland 24, being relatively fixed on above-below direction (i.e. valve rod 25 is axial) is kept by locating ring 22 between valve rod 25 and valve gap 21, being provided with a stepped hole (non-label) in described gland 24 to be used for housing the sealing ring 23 being set on valve rod 25, this sealing ring 23 directly contacts with locating ring 22.In order to save manufacturing cost, the locating ring 22 of copper material is generally designed to the least by prior art, the stepped hole (non-label) of sealing ring 23 is installed simultaneously because devise on gland 24 and causes locating ring 22 upper side and the contact surface of gland 24 to diminish, and then make locating ring 22 local pressure, easily wear and tear；And owing to locating ring 22 is typically to be made up of two semicircular ring, the operating process of rotation valve rod is easily cut the sealing ring 23 in gland 24 and then affects the axial sealing of product.On the other hand in order to prevent latasuture between gland 24 and valve gap 21 from revealing, prior art generally arranges sealing ring 27 between gland 24 and valve gap 21.
As shown in Figure 2, meet gate valve 100 of the present utility model to include valve gap 1, cover the gland 4 in valve gap 1 upper end, run through the rotating valve rod 5 of gland 4, described gate valve 100 still further comprises and is installed on valve rod 5 for valve rod 5 is installed on the locating ring 2 between valve gap 1 and gland 4 with being axially fixed, and the first sealing ring 3 being arranged between gland 4 and locating ring 2.Described valve rod 5 is provided with the draw-in groove (non-label) installing locating ring 2, described locating ring 2 is made up of the snap ring of two semicircular metal manufactures, preferably, use copper material makes, two semicircular snap rings form one after closing up and have in the draw-in groove that certain thickness annulus is stuck in valve rod 5, wherein, the external diameter of locating ring 2 is more than the external diameter of valve rod 5.
It is positioned the technical problem that ring 22 is cut to solve sealing ring 23 in prior art; gate valve 100 described in the present embodiment still further comprises the first pad 7 being arranged between the first sealing ring 3 and locating ring 2; described first pad 7 is preferably used the wear-resisting hard metals such as rustless steel and makes; be conducive to protection the first sealing ring 3; generally, the thickness of the first pad 7 of selection is less than the thickness of locating ring 22.It addition, gate valve 100 also includes the second sealing ring 9 being set in the O shape of the first pad 7 periphery, the external diameter of described second sealing ring 9 is more than external diameter and the external diameter of the first sealing ring 3 of the first pad 7, is possible to prevent fluid from the gap leakage between valve gap 1 and gland 4.Preferably, described gate valve 100 also includes the second pad 8 being arranged between the first pad 7 and locating ring 2, described second pad 8 has the external diameter identical from locating ring 2 and different internal diameters, in the installing hole (non-label) being all housed in valve gap 1, further, so that locating ring 2 rotates smooth and easy in valve gap 1, the downside of the locating ring 2 in the present embodiment is also equipped with second pad (non-label), the i.e. both sides up and down of locating ring 2 and is mounted on the second pad 8.Wherein, the external diameter of described second pad 8 is less than the external diameter of the first pad 7, and described first sealing ring 3 includes the O-ring seals of two formed objects, is provided with separation sleeve 6 between said two O-ring seals 3, reaches to increase the effect of sealing property extending sealing area.In sum, meet gate valve 100 of the present utility model and there is structural safety reliably, the advantage of favorable sealing property.
Claims (7)
1. a gate valve, including valve gap, cover the gland in valve gap upper end, run through the rotating valve rod of gland, described gate valve still further comprises the locating ring being installed on valve rod for being axially fixed on valve gap by valve rod, and the first sealing ring being arranged between gland and locating ring, it is characterized in that: be provided with the first pad between described locating ring and the first sealing ring, outside described first pad, be arranged with the second sealing ring.
2. gate valve as claimed in claim 1, it is characterised in that: also including the second pad being arranged between the first pad and locating ring, described second pad has the external diameter identical with locating ring.
3. gate valve as claimed in claim 1, it is characterised in that: the both sides up and down of described locating ring are mounted on the second pad.
4. the gate valve as described in Claims 2 or 3 any one, it is characterised in that: described first pad is that metal material is made, and the external diameter of described second pad is less than the external diameter of the first pad.
5. gate valve as claimed in claim 1, it is characterised in that: described first sealing ring includes the O-ring seals of two formed objects, is provided with separation sleeve between said two O-ring seals.
6. gate valve as claimed in claim 5, it is characterised in that: described second sealing ring is O-ring seals, and the external diameter of described second sealing ring is more than the external diameter of the first sealing ring.
7. gate valve as claimed in claim 1, it is characterized in that: described locating ring is made up of the snap ring of two semicircular metal manufactures, and at the axis direction of valve rod, there is the thickness more than the first pad, described valve rod is provided with the draw-in groove installing snap ring, and the external diameter of described locating ring is more than the external diameter of valve rod.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521117361 | 2015-12-30 | ||
| CN2015211173610 | 2015-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559924U true CN205559924U (en) | 2016-09-07 |
Family
ID=56817820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192274.XU Active CN205559924U (en) | 2015-12-30 | 2016-03-14 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833203A (en) * | 2021-02-04 | 2021-05-25 | 安徽红星阀门有限公司 | Novel gate valve and assembling method thereof |
-
2016
- 2016-03-14 CN CN201620192274.XU patent/CN205559924U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833203A (en) * | 2021-02-04 | 2021-05-25 | 安徽红星阀门有限公司 | Novel gate valve and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |