CN208750044U - A kind of dual-seal gate valve - Google Patents
A kind of dual-seal gate valve Download PDFInfo
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- CN208750044U CN208750044U CN201820690896.4U CN201820690896U CN208750044U CN 208750044 U CN208750044 U CN 208750044U CN 201820690896 U CN201820690896 U CN 201820690896U CN 208750044 U CN208750044 U CN 208750044U
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Abstract
The utility model relates to a kind of fluid control valves, it is small to provide a kind of opening and closing torque, valve stem seal is good, dual-seal gate valve with long service life, including valve body, valve deck, valve plate, valve rod and opening device, the valve deck is set to above valve body, water inlet and water outlet are equipped with along axial component on the valve body, the valve plate is set in valve body between water inlet and water outlet, described valve rod one end passes through valve deck and connect with valve plate, airtight and watertight padding is equipped between valve rod and valve deck, the opening device is set on the free end of valve rod, at least one O-ring seal is equipped between the valve rod and valve deck, two sealing surface centers of the valve plate have convex block, the convex block is parallel with the water inlet and the water outlet and is bonded.
Description
Technical field
The utility model relates to a kind of gate valve, in particular to a kind of dual-seal gate valve.
Background technique
Gate valve mainly play a part of in the duct truncation or connect pipeline in fluid, be widely used in tap water, petroleum,
It is used on the fluid lines such as chemical industry, electric power, food, medicine, metallurgy, energy resource system as the device for being truncated or connecting fluid.
Gate valve mainly includes valve body, valve deck, clamp nut, valve plate, valve rod and opening device at present, and the valve deck is set to valve
Above body, the clamp nut is set to above valve deck, is equipped with water inlet and water outlet, the valve along axial component on the valve body
Plate is set between water inlet and water outlet, and described valve rod one end passes through valve deck and connect with valve plate, in order to guarantee the sealing of gate valve, is led to
The filler that seals often is equipped between valve rod and valve deck, the opening device is set on the free end of valve rod, when work,
Using the lifting of flashboard come the opening and closing of control valve, to realize switching on or off for medium in pipeline.Above-mentioned gate valve rod with
Sealing between valve deck is easily abraded, using long using single track packing seal since the opening and closing torque of gate valve is big at valve stem seal
Often there is the phenomenon that dielectric leakage, it is short that there is service lifes, and the bad phenomenon of sealing effect, certain special industries pass through pipeline
Poisonous and harmful substance is conveyed, the leakage of gate valve medium can also endanger environment and the physical and mental health of people.
Existing a variety of solutions for preventing medium from revealing in the prior art, such as Chinese publication
It proposes to be equipped with conduit on two symmetrical sealing surfaces of valve plate periphery in CN202469208U, reduces flashboard periphery
The contact area of sealing surface and valve interior wall sealing surface, flashboard is generated when doing the opening and closing of upper and lower elevating movement control valve to rub
Wiping pressure is small, and gate sealing surface is not easy to abrade, the phenomenon that reducing the wear intensity of sealing surface, further reduce dielectric leakage,
The service life of gate valve is extended, meanwhile, the materials cost of valve plate can be reduced by being equipped with conduit on gate panel body.But above-mentioned side
Formula, because not contacting between flashboard periphery sealing surface and valve interior wall sealing surface, leads to medium leakage corrosion when gate valve is opened
Valve rod, valve deck and sealing ring.
Therefore, in order to solve the above technical problems, medium leakage in inner cavity when being opened the utility model proposes a kind of reduction
Dual-seal gate valve.
Utility model content
In view of the above-mentioned problems, that the utility model proposes a kind of opening and closing torques is small, valve stem seal is good, with long service life double
Resealing gate valve.
To solve this technical problem, the utility model takes following scheme: a kind of dual-seal gate valve, including valve body, valve
Lid, valve plate, valve rod and opening device, the valve deck are set to above valve body, on the valve body along axial component be equipped with water inlet with
Water outlet, the valve plate are set in valve body between water inlet and water outlet, and described valve rod one end passes through valve deck and connect with valve plate, valve
Airtight and watertight padding is equipped between bar and valve deck, the opening device is set on the free end of valve rod, sets between the valve rod and valve deck
There is at least one O-ring seal, two sealing surface centers of the valve plate have a convex block, the convex block and the water inlet and described
Water outlet is parallel and is bonded.
Further improved: the O-ring seal is one, is located under airtight and watertight padding between valve rod and valve deck
Side.
It is further improved: to offer conduit on two symmetrical sealing surfaces of the valve plate periphery.
Further improved: the lateral edge of the conduit is equipped with rounded corner.
By using preceding solution, the beneficial effects of the utility model are: the utility model dual-seal gate valve use with
Water inlet and water outlet be parallel and the convex block of fitting, during valve plate rises and opens, the surface of convex block always with water inlet
And water outlet cooperation, reduce the possibility that medium flows into valve body internal corrosion valve deck, sealing ring and valve rod.It is further improved to be: institute
Two symmetrical sealing surfaces of valve plate periphery are stated equipped with conduit, it is close with valve interior wall to reduce flashboard periphery sealing surface
The contact area of cover, generated friction pressure is small when flashboard does the opening and closing of upper and lower elevating movement control valve, gate sealing surface
The phenomenon that being not easy to abrade, reducing the wear intensity of sealing surface, further reduce dielectric leakage, extend gate valve uses the longevity
Life, meanwhile, the materials cost of valve plate can be reduced by being equipped with conduit on gate panel body.
Detailed description of the invention
Fig. 1 is the utility model embodiment gate valve structure schematic diagram；
Fig. 2 is the utility model embodiment valve board structure schematic diagram.
Specific embodiment
Below in conjunction with schematic diagram to the utility model proposes dual-seal gate valve be described in more detail, wherein table
Shown the preferred embodiment of the utility model, it should be appreciated that those skilled in the art can modify described herein it is practical new
Type, and still realize the advantageous effects of the utility model.Therefore, following description should be understood as those skilled in the art
It is widely known, and be not intended as limitations of the present invention.
Referring to Figure 1 and Figure 2, the present embodiment discloses a kind of dual-seal gate valve, including valve body 1, valve deck 2, valve plate 3, valve rod 4
And opening device, valve deck 2 are set to 1 top of valve body, valve deck 2 is equipped with clamp nut 5, is equipped with and intakes along axial component on valve body 1
Mouth 11 and water outlet 12, valve plate 3 are set between water inlet 11 and water outlet 12, and one end of valve rod 4 passes through clamp nut 5 and valve deck
2 connect with valve plate 3, and airtight and watertight padding 7 is equipped between valve rod 4 and valve deck 2, and positioned at airtight and watertight padding between valve rod 4 and valve deck 2
Lower section is additionally provided with an O-ring seal 8, and opening device is set on the free end of valve rod 4, and opening device is handwheel 6, above-mentioned O-shaped
Sealing ring 8 can be increased by sealing requirements of the actual production to product.Wherein, two sealing surfaces, 31 center of valve plate 3 has
Convex block 33, convex block is parallel with water inlet and water outlet and is bonded.It is offered on two symmetrical sealing surfaces 31 of valve plate periphery
The lateral edge of conduit 32, conduit 32 is equipped with rounded corner.Conduit 32 reduces valve plate periphery sealing surface and valve interior wall sealing surface
Contact area, flashboard do upper and lower elevating movement control valve opening and closing when generated friction pressure it is small, gate sealing surface is not easy
Scratch, reduces sealing surface wear degree.When work, valve plate 3 is set to do oscilaltion by the band rotation of ovable valve stem 4 of opening device handwheel
Movement, the periphery sealing surface of valve plate 3 are separated with valve interior wall sealing surface, and the surface of convex block 33 is sealed with valve interior wall always
Face paste is closed, to realize switching on or off for medium in pipeline, and prevents medium from flowing into valve body internal corrosion valve rod, valve deck and O-shaped
Sealing ring.
The utility model dual-seal gate valve is located at below airtight and watertight padding between valve rod and valve deck and is additionally provided with O-ring seal, rises
Sealing performance to the effect of dual-seal, valve rod is improved, and strengthens the sealing defence line of gate valve, while O-ring seal
The frictional force in valve stem seal face is also reduced, makes to open and close torque reduction, has and open and close laborsaving, good airproof performance, it is with long service life
Advantage.
Conduit 32 is offered on two symmetrical sealing surfaces 31 of valve plate periphery, the lateral edge of conduit 32 is equipped with rounded corner.
Conduit 32 reduces the contact area of flashboard periphery sealing surface Yu valve interior wall sealing surface, and flashboard does upper and lower elevating movement
Generated friction pressure is small when control valve opens and closes, and gate sealing surface is not easy to abrade, and reduces sealing surface wear degree, reduces
The phenomenon that dielectric leakage, extends the service life of gate valve, meanwhile, be equipped on flashboard conduit can reduce the materials of valve plate at
This.
The preferred embodiment that above are only the utility model, does not play the role of any restrictions to the utility model.
Any person of ordinary skill in the field, in the range of not departing from the technical solution of the utility model, to the utility model
The technical solution and technology contents of exposure make the variation such as any type of equivalent replacement or modification, belong to without departing from the utility model
Technical solution content, still fall within the protection scope of the utility model.
Claims (4)
1. a kind of dual-seal gate valve, which is characterized in that including valve body, valve deck, valve plate, valve rod and opening device, the valve deck
Above valve body, it is equipped with water inlet and water outlet along axial component on the valve body, the valve plate is set to water inlet in valve body
Between water outlet, described valve rod one end passes through valve deck and connect with valve plate, and airtight and watertight padding is equipped between valve rod and valve deck, described to open
Opening device be set to valve rod free end on, between the valve rod and valve deck be equipped at least one O-ring seal, the two of the valve plate
Sealing surface (31) center has convex block (33), and the convex block (33) is parallel with the water inlet and the water outlet and is bonded.
2. dual-seal gate valve according to claim 1, it is characterised in that: the O-ring seal is one, is set to valve rod
It is located at the lower section of airtight and watertight padding between valve deck.
3. dual-seal gate valve according to claim 1 or 2, it is characterised in that: the valve plate periphery is symmetrical
Conduit (32) are offered on two sealing surfaces (31).
4. dual-seal gate valve according to claim 3, it is characterised in that: the lateral edge of the conduit (32) is equipped with rounding
Angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820690896.4U CN208750044U (en) | 2018-05-10 | 2018-05-10 | A kind of dual-seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820690896.4U CN208750044U (en) | 2018-05-10 | 2018-05-10 | A kind of dual-seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208750044U true CN208750044U (en) | 2019-04-16 |
Family
ID=66053190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820690896.4U Active CN208750044U (en) | 2018-05-10 | 2018-05-10 | A kind of dual-seal gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208750044U (en) |
-
2018
- 2018-05-10 CN CN201820690896.4U patent/CN208750044U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |