CN204900839U - Globe valve - Google Patents
Globe valve Download PDFInfo
- Publication number
- CN204900839U CN204900839U CN201520538523.1U CN201520538523U CN204900839U CN 204900839 U CN204900839 U CN 204900839U CN 201520538523 U CN201520538523 U CN 201520538523U CN 204900839 U CN204900839 U CN 204900839U
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- Prior art keywords
- soft seal
- flap
- valve
- isolation
- stop valve
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Abstract
The utility model discloses a globe valve of good leakproofness. The utility model provides a: a globe valve, include valve body, valve clack and be used for driving the valve clack do about linear motion's valve rod, be provided with in the valve body and have open -ended isolation inner wall, the both sides that keep apart the inner wall constitute imported chamber and outlet chamber respectively, import chamber and outlet chamber switch on through the opening mutually, the valve clack is including sealed inclined plane, sealed inclined plane including can with keep apart inner wall contradict anterior segment of being connected and the back end that is connected with the soft seal piece, the soft seal piece can be contradicted with the isolation inner wall jointly with the anterior segment and is connected, one side that the inner wall is kept apart to soft seal piece orientation is for being the spherical portion of exerting pressure. The utility model discloses a be the sealed sealed double sealing mode that combines together as the second sealing layer of the conical surface as sphere face on first sealing layer and the soft seal piece and isolation inner wall of the conical surface by the sealed optimization of traditional single conical surface between valve clack and the isolation inner wall, guaranteed that globe valve has good sealing performance.
Description
Technical field
The utility model relates to valve technology field, particularly a kind of stop valve.
Background technique
Stop valve refers to the valve of closure member (flap) along the movement of valve seat center line, flap is along the center line moving linearly of valve seat, due to such valve valve rod open or shutoff stroke relatively short, and there is cutting function very reliably, again due to the change of valve seat port and the stroke direct proportionality of flap, be very suitable for the adjustment to flow, therefore, such shutoff valve that dams is suitable as and cuts off or regulate and throttling use very much.At present, stop valve generally includes valve body, flap and the valve rod for driving flap to do upper and lower straight line motion, the isolation inwall with opening is provided with in valve body, isolation inwall both sides form snout cavity and outlet plenum respectively, snout cavity and outlet plenum are conducted by opening, valve rod comprises the built-in portion being placed in valve inner and the external portion being placed on valve body outside, the other end and the flap in relatively external portion of the built-in portion of described valve body are connected, and described flap is placed in conducting place of snout cavity and outlet plenum and can conflicts with isolation inwall and arrange formation and be tightly connected.Flap is all adopt plane to plane with the sealing means of isolation inwall, or adopt the conical surface to the sealing configuration of the conical surface, even if traditional plane sealing still needs to grind after numerical control fine finishing ensure that the sealing pair of valve seat flap has good surface roughness, and very high sealing force is needed to ensure that the microcosmic gap that the seal pressure of sealing surface is filled up between sealing pair by sealing surface resiliently deformable makes valve seal realize.That is, such sealing surface structure, the sealability that easily there is sealing surface is not up to standard, medium in valve body goes out from the clearance portion bit stream of sealing surface, if it is strong to want to make sealability, requirement on machining accuracy is just higher, needs to carry out high-precision cooperation to valve base sealing portion and flap sealed department, complex process, makes the labor intensity of operator excessive.
Summary of the invention
For prior art exist deficiency, main purpose of the present utility model be to provide a kind of good airproof performance and sealing configuration be simply easy to manufacture stop valve.
For achieving the above object, the utility model provides following technological scheme, a kind of stop valve, comprise valve body, flap and the valve rod for driving flap to do upper and lower straight line motion, the isolation inwall with opening is provided with in described valve body, the both sides of described isolation inwall form snout cavity and outlet plenum respectively, described snout cavity and outlet plenum are conducted by opening, described flap comprises sealing inclined-plane, described sealing inclined face comprises can to conflict the leading portion be connected and the back segment being connected with soft seal with isolation inwall, described soft seal jointly can be conflicted with isolation inwall with leading portion and is connected, described soft seal is pressure portion spherical in shape towards the side of isolation inwall.
Preferably, described leading portion is in below back segment relative to isolation inwall.
Preferably, on described isolation inwall, relative soft seal place is provided with circular groove, and the radius of described circular groove is less than the radius of pressure portion.
Preferably, on described soft seal, the other end of relative pressure portion is joint, and described soft seal is removably connected by joint and flap.
Preferably, described joint is provided with protruding ring, is provided with the groove matched with described protruding ring in described flap, described soft seal and flap realize clamping by protruding ring and cooperatively interacting of groove.
Preferably, described joint is provided with outside thread, described flap is provided with the tapped hole matched with the outside thread on joint, described soft seal is threaded with flap.
Preferably, described soft seal is made up of nylon material.
Preferably, described leading portion is provided with nickel metal layer or nickel alloy layer with isolation inner contacts.
The utility model has the following advantages relative to prior art tool, soft seal can be connected with common to conflict with isolation inwall of leading portion, and flap is optimized for by traditional single conical surface seal the dual sealing manner that conical surface seal combines as the first sealing layer with the conical surface seal of isolating inwall with the spherical on soft seal as the second sealing layer with isolating between inwall.Due to the setting spherical in shape of the pressure portion on soft seal, so when flap does upper and lower straight line motion under the drive of valve rod, the spherical of pressure portion can be formed tangent with the conical surface of isolation inwall, this just turn increases linear sealing structure on the basis of conical surface seal, and for linear sealing structure, isolation inwall only needs just can realize under the effect of low sealing force through numerical control fine finishing, realizes the sealing of valve.Therefore, for Double sealing globe valve of the present utility model, flap does not need just can directly assemble through the grinding process of complexity with the sealing surface of isolation inwall in fact, even if because the first sealing layer and soft seal after using for a long time and the linear sealing sealing structure between isolation inwall strong not, and the second sealing layer and the sealing between leading portion and isolation inwall also as a kind of remedial measure, can ensure that the fluid in stop valve can not be revealed.
Accompanying drawing explanation
Fig. 1 is the sectional view of stop valve of the present utility model;
Fig. 2 is A portion enlarged diagram in Fig. 1;
Fig. 3 is the linkage structure schematic diagram of soft seal and flap.
In figure: 1, valve body; 2, flap; 3, valve rod; 4, inwall is isolated; 5, snout cavity; 6, outlet plenum; 7, inclined-plane is sealed; 8, soft seal; 9, leading portion; 10, back segment; 11, pressure portion; 12, joint; 13, circular groove; 14, protruding ring; 15, groove.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As described in Figure 1, a kind of stop valve, comprise valve body 1, flap 2 and the valve rod 3 for driving flap 2 to do upper and lower straight line motion, wherein be provided with the isolation inwall 4 with opening in valve body 1, the both sides of isolation inwall 4 form snout cavity 5 and outlet plenum 6 respectively, snout cavity 5 and outlet plenum 6 are conducted by opening, flap 2 comprises sealing inclined-plane 7, sealing inclined-plane 7 comprises can to conflict the leading portion 9 be connected and the back segment 10 being connected with soft seal 8 with isolation inwall 4, soft seal 8 jointly can be conflicted with isolation inwall 4 with leading portion 9 and is connected, soft seal 8 is pressure portion 11 spherical in shape towards the side of isolation inwall 4.
By adopting technique scheme, soft seal 8 can be connected with common to conflict with isolation inwall 4 of leading portion 9, and flap 2 is optimized for by traditional single conical surface seal the dual sealing manner that conical surface seal combines as the first sealing layer with the conical surface seal of isolating inwall 4 with the spherical on soft seal 8 as the second sealing layer with isolating between inwall 4.Due to pressure portion 11 setting spherical in shape on soft seal 8, so when flap 2 does upper and lower straight line motion under the drive of valve rod 3, the spherical of pressure portion 11 can be formed tangent with the conical surface of isolation inwall 4, this just turn increases linear sealing structure on the basis of conical surface seal, and for linear sealing structure, isolation inwall 4 only needs just can realize under the effect of low sealing force through numerical control fine finishing, realizes the sealing of valve.Therefore, for Double sealing globe valve of the present utility model, flap 2 does not need just can directly assemble through the grinding process of complexity with the sealing surface of isolation inwall 4 in fact, even if because the first sealing layer and soft seal 8 after using for a long time and the linear sealing sealing structure between isolation inwall 4 strong not, and the second sealing layer and the sealing between leading portion 9 and isolation inwall 4 also as a kind of remedial measure, can ensure that the fluid in stop valve can not be revealed.
Leading portion 9 is in below back segment 10 relative to isolation inwall 4, with reference to Fig. 2, in the present embodiment, traditional flap 2 and the sealing and conical surface seal isolating inwall 4 are played important sealing and salvage as the second sealing layer, and also can preferentially work to make present segment 9 and isolating the first sealing layer when inwall 4 is conflicted, so be preferably, soft seal 8 is arranged on top.
On isolation inwall 4, soft seal 8 place is provided with circular groove 13 relatively, the radius of described circular groove 13 is less than the radius of pressure portion 11, the setting of circular groove 13 is to form good circle when enabling the pressure portion 11 of soft seal 8 be that isolation inwall 4 contacts, namely the effect that restriction soft seal 8 is distorted is played, and the radius that the radius of circular groove 13 is less than pressure portion 11 is that to arrange be in order to while being distorted in restriction pressure portion 11, pressure portion 11 is fitted tightly with the inwall of circular groove 13, further ensure the seal action of soft seal 8.
On soft seal 8, the other end of relative pressure portion 11 is joint 12, and described soft seal 8 is removably connected by joint 12 and flap 2, and soft seal 8 and flap 2 removably connect the assembling and maintenance that can facilitate valve or change soft seal 8.
As the above-mentioned a kind of mode removably connected, with reference to Fig. 3, on joint 12, be provided with protruding ring 14 in the present embodiment, be provided with the groove 15 matched with described protruding ring 14 in flap 2, soft seal 8 realizes clamping with flap 2 by protruding ring 14 and cooperatively interacting of groove 15.In the process that flap 2 moves up and down, prevent soft seal 8 from coming off from flap 2 by protruding ring 14 and groove 15 between soft seal 8 and isolation inwall 4, with because the quality of soft seal 8 is relatively soft, there is good elasticity, can be more convenient when also can meet manual assembly.
In addition, the one be connected with clamping between flap 2 as above-mentioned soft seal 8 is out of shape, stop valve of the present utility model can also realize removably connecting between soft seal 8 and flap 2 by following structure, namely joint 12 is provided with outside thread, flap 2 is provided with the tapped hole matched with the outside thread on joint 12, soft seal 8 is threaded with flap 2 (not drawing in the accompanying drawings)
Soft seal 8 is made up of nylon material, and soft seal 8 can be made to possess good elasticity and decay resistance, is more suitably in valve pocket and uses.
Leading portion 9 is provided with nickel metal layer or nickel alloy layer with isolation inner contacts, and nickel metal layer or nickel alloy layer can improve the surface hardness of isolation inwall 4, extend the working life of isolation inwall 4.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a stop valve, comprise valve body, flap and the valve rod for driving flap to do upper and lower straight line motion, the isolation inwall with opening is provided with in described valve body, the both sides of described isolation inwall form snout cavity and outlet plenum respectively, described snout cavity and outlet plenum are conducted by opening, it is characterized in that: described flap comprises sealing inclined-plane, described sealing inclined face comprises can to conflict the leading portion be connected and the back segment being connected with soft seal with isolation inwall, described soft seal jointly can be conflicted with isolation inwall with leading portion and is connected, described soft seal is pressure portion spherical in shape towards the side of isolation inwall.
2. a kind of stop valve according to claim 1, is characterized in that: described leading portion is in below back segment relative to isolation inwall.
3.> a kind of stop valve according to claim 1 and 2, is characterized in that: on described isolation inwall, relative soft seal place is provided with circular groove, and the radius of described circular groove is less than the radius of pressure portion.
4. a kind of stop valve according to claim 3, is characterized in that: on described soft seal, the other end of relative pressure portion is joint, and described soft seal is removably connected by joint and flap.
5. a kind of stop valve according to claim 4, it is characterized in that: described joint is provided with protruding ring, be provided with the groove matched with described protruding ring in described flap, described soft seal and flap realize clamping by protruding ring and cooperatively interacting of groove.
6. a kind of stop valve according to claim 4, is characterized in that: described joint is provided with outside thread, described flap is provided with the tapped hole matched with the outside thread on joint, described soft seal is threaded with flap.
7. a kind of stop valve according to claim 6, is characterized in that: described soft seal is made up of nylon material.
8. a kind of stop valve according to claim 7, is characterized in that: described leading portion is provided with nickel metal layer or nickel alloy layer with isolation inner contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538523.1U CN204900839U (en) | 2015-07-23 | 2015-07-23 | Globe valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538523.1U CN204900839U (en) | 2015-07-23 | 2015-07-23 | Globe valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204900839U true CN204900839U (en) | 2015-12-23 |
Family
ID=54923016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520538523.1U Active CN204900839U (en) | 2015-07-23 | 2015-07-23 | Globe valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204900839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090530A (en) * | 2015-07-23 | 2015-11-25 | 苏州科迪流体控制设备有限公司 | Stop valve |
-
2015
- 2015-07-23 CN CN201520538523.1U patent/CN204900839U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090530A (en) * | 2015-07-23 | 2015-11-25 | 苏州科迪流体控制设备有限公司 | Stop valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |