CN204201133U - V-type mouth regulation gate valve - Google Patents
V-type mouth regulation gate valve Download PDFInfo
- Publication number
- CN204201133U CN204201133U CN201420443789.3U CN201420443789U CN204201133U CN 204201133 U CN204201133 U CN 204201133U CN 201420443789 U CN201420443789 U CN 201420443789U CN 204201133 U CN204201133 U CN 204201133U
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Abstract
The utility model discloses a kind of V-type mouth regulation gate valve, comprise modulating valve body and flap, modulating valve body is provided with valve port, it is characterized in that: described flap is square structure, the mouth of pipe is shape wide at the top and narrow at the bottom, and the width of orifice configuration increases from down to up successively.The shape of described valve port is triangular design or V-shaped design.The base angle of the valve port of described triangular design or V-shaped design is between 15-175 °.Lineal shape, arc line shaped, curvilinerar figure or fold-line-shaped can be used in the both sides of the valve port of described V-shaped design.Described flange type sluice valve, butt-holding sluice valve and welding type gate valve, everyly have employed V-arrangement valve port, all in protection domain of the present utility model.The utility model flap gets square structure, valve port is got V-type or is claimed triangular structure to match and makes the change of small guide vane down-off little, and the requirement that large aperture changes in flow rate is fast, ensure that sealability, also overcome the direct effect of pressure reduction, during use, greatly reduce switch thrust.
Description
Technical field
The utility model belongs to regulation gate valve field, specifically, relates to a kind of V-type mouth regulation gate valve.
Background technique
Conventional stop valve switch force needs the thrust overcoming inlet outlet pressure differential generation, and consumption is large, cost is high.In order to avoid differential pressure action, people devise two kinds of solutions:
One is double seated valve, medium equipartition is become two strands, respectively to opposite direction flowing, counteracts differential pressure action.But because two valves are coaxial, production precision is difficult to accomplish strictly to close simultaneously, closes to produce after a valve must be had and leak.
Two is balanced type sleeve valves, balance pressure reduction, but this spool must establish stuffing box packing on flap, creates wearing and tearing, will cause leakage by the through hole on flap.
Above-mentioned valve medium all flows through sealing valve port face, to erosion failure easy under large pressure reduction working environment, causes leaking, must not take other remedial measures, as established multistage throttle or add restricting orifice etc. on valve preceding pipeline.Multistage throttle and so-called mazy type, can not reduce the pressure reduction starting moment, so can not solve the problem of washing away completely.The area of restricting orifice is fixed value, can affect effective regulation range of modulating valve.
Also have a kind of common gate valve in addition, although overcome above-mentioned deficiency, it is not good that its round valve port determines its control characteristic, industry can not be met and regulate requirement, major defect is that the change of small guide vane down-off is too fast, and large aperture down-off change is too slow, and the characteristic requirements of modulating valve just in time in contrast.
Model utility content
The technical problems to be solved in the utility model overcomes above-mentioned defect, the V-type mouth regulation gate valve of the switch thrust that provides a kind of reasonable in design, good seal performance, overcomes differential pressure action, greatly reduces.
For solving the problem, the technological scheme that the utility model adopts is:
V-type mouth regulation gate valve, comprises modulating valve body, and modulating valve body is symmetrically arranged with flap, flap is provided with valve port, it is characterized in that: described flap is square structure, and valve port is shape wide at the top and narrow at the bottom, and the diameter of port shape increases from down to up successively.
As a kind of technological scheme of optimization, the shape of described valve port is triangular design or V-shaped design.
As a kind of technological scheme of optimization, the base angle of the valve port of described triangular design or V-shaped design is between 15-175 °.
As a kind of technological scheme of optimization, lineal shape, arc line shaped, curvilinerar figure or fold-line-shaped can be used in the both sides of the valve port of described V-shaped design.
Owing to have employed technique scheme, compared with prior art, the utility model flap gets square structure, valve port is got V-type or is claimed triangular structure, and these two kinds of structures match, and small guide vane down-off is changed little, the requirement that large aperture changes in flow rate is fast, ensure that sealability, also overcome the effect of pressure reduction, during use, greatly reduce switch thrust.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of flap and valve port in a kind of embodiment of the utility model;
Fig. 2 is the characteristic curve of typical circular valve port;
Fig. 3 is the structural representation of flap and valve port in the another kind of embodiment of the utility model.
Embodiment
Embodiment:
As shown in Figure 1, V-type mouth regulation gate valve, comprises modulating valve body, modulating valve body is symmetrically arranged with flap, flap is provided with valve port.At this, what modulating valve body adopted is existing modulating valve.Described flap 1 is square structure, and valve port 2 is in shape wide at the top and narrow at the bottom, and the diameter of valve port 2 shape increases from down to up successively.
In the present embodiment, the shape of described valve port 2 is triangular design or V-shaped design.The base angle 3 of the valve port of described triangular design or V-shaped design is between 15-175 °.Lineal shape, arc line shaped, curvilinerar figure or fold-line-shaped can be used in the both sides of the valve port 2 of described V-shaped design.
In the present embodiment, the flap of gate valve itself does not bear differential pressure action, and gate valve only has a valve port, closing problem when there is not difference.The flap of gate valve does not establish stuffing box packing, is integrated design, there is not wear and leakage problem, and gate valve medium does not flow through sealing valve port face, do not exist and seriously wash away problem.
Key point of the present utility model is the optimization of the valve port to gate valve, and flap gets square structure, and valve port is got V-type or claimed triangular structure, and these two kinds of structures match, and small guide vane down-off is changed slow, the requirement that large aperture changes in flow rate is fast.As Fig. 2, wherein the characteristic curve (aperture discharge relation line) of typical circular valve port is very large at valve opening earlier ramp, and when aperture is larger, slope is very little, and principle is that flow is directly proportional to flow area, the sensitivity of adjustment and accuracy can be made so all very poor, can not need of production be met.And improve after, characteristic curve can make wait slope or elder generation little rear large slope, the effect of adjustment can be made like this to be greatly improved.The best angle at V-type angle can be drawn according to accurate Calculation.Certainly, V-type both sides also can be curved lines.
In order to reduce cost of production further, also can improve with traditional gate valves, the valve port scheme of improvement as shown in Figure 3.In figure 3,1 represents the valve port of traditional gate valves and the shape of valve clack sealing surface, and 2 is the shape forming " V " font valve port after being improved by the valve port of former valve.
The utility model flap gets square structure, and valve port is got V-type or claimed triangular structure, and these two kinds of structures match, and small guide vane down-off is changed slow, the requirement that large aperture changes in flow rate is fast.
Such improvement, not only ensure that sealability, also overcomes the effect of pressure reduction simultaneously, greatly reduces switch thrust during use.
The utility model is not limited to above-mentioned preferred implementation, and anyone should learn the structural change made under enlightenment of the present utility model, and every have identical or akin technological scheme with the utility model, all belongs to protection domain of the present utility model.
Claims (4)
1.V type mouth regulation gate valve, comprises modulating valve body, modulating valve body is symmetrically arranged with flap, flap is provided with valve port, it is characterized in that: described flap is square structure, and valve port is shape wide at the top and narrow at the bottom, and the diameter of port shape increases from down to up successively.
2. V-type mouth regulation gate valve according to claim 1, is characterized in that: the shape of described valve port is triangular design or V-shaped design.
3. V-type mouth regulation gate valve according to claim 2, is characterized in that: the base angle of the valve port of described triangular design or V-shaped design is between 15-175 °.
4. V-type mouth regulation gate valve according to claim 3, is characterized in that: lineal shape, arc line shaped, curvilinerar figure or fold-line-shaped can be used in the both sides of the valve port of described V-shaped design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443789.3U CN204201133U (en) | 2014-08-06 | 2014-08-06 | V-type mouth regulation gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443789.3U CN204201133U (en) | 2014-08-06 | 2014-08-06 | V-type mouth regulation gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201133U true CN204201133U (en) | 2015-03-11 |
Family
ID=52659097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420443789.3U Expired - Fee Related CN204201133U (en) | 2014-08-06 | 2014-08-06 | V-type mouth regulation gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204201133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223879A (en) * | 2017-12-15 | 2018-06-29 | 河南航天液压气动技术有限公司 | Proportioning valve and its valve seat |
-
2014
- 2014-08-06 CN CN201420443789.3U patent/CN204201133U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223879A (en) * | 2017-12-15 | 2018-06-29 | 河南航天液压气动技术有限公司 | Proportioning valve and its valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20160806 |