CN202074078U - Plane sealed self-operated flow control valve - Google Patents
Plane sealed self-operated flow control valve Download PDFInfo
- Publication number
- CN202074078U CN202074078U CN2011201861090U CN201120186109U CN202074078U CN 202074078 U CN202074078 U CN 202074078U CN 2011201861090 U CN2011201861090 U CN 2011201861090U CN 201120186109 U CN201120186109 U CN 201120186109U CN 202074078 U CN202074078 U CN 202074078U
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- flow
- plane
- control valve
- valve
- flow control
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Abstract
The utility model provides a plane sealed self-operated flow control valve which comprises a valve body, wherein a liquid inlet and a liquid outlet are arranged on the valve body and are separated by a plane friction pair structure consisting of a plane-shaped movable sheet and a plane-shaped static sheet; the movable sheet and the static sheet are respectively provided with through-flow holes; and a valve shaft is fixedly connected in the axial direction of the movable sheet. The movable sheet is driven by the valve shaft; the coincided area of the through-flow holes of the movable sheet and the static sheet is changed through displacement, so that the overflowing section area is changed to change the flow of the through fluid, and the medium flow can be cut off completely when the fluid needs to be shut down. In the patent of the utility model, a flow setting and regulating function member of the self-operated flow control valve is improved to enable the flow setting and regulating function to be more ideal; meanwhile, the difficulty in shutting down the fluid completely is solved; therefore, the plane sealed self-operated flow control valve is applied to pipe network systems such as central heating, central air-conditioning and the like, and solves the problem of hydraulic disorder and reasonable energy transmission and distribution.
Description
Technical field
The utility model relates to a kind of control valve, is specially a kind of self-operated flow control valve.
Background technique
Self-operated flow control valve has the flow set adjusting and keeps two kinds of functions of constant flow.And the realization of these two functions is finished by two-part member in the valve.Aspect the flow set adjusting, mainly contain the valve of two kinds of structures in the market, a kind of is pivoted housing formula switch regulation structure, this structure relies on pivoted housing radially to change its flow area and change flow at main valve body, because pivoted housing and valve body must have certain interval to be convenient to manually or use electric actuator to drive, the existence in this gap just makes leakage rate inevitably increase, so rotating sleeve is difficult to close fully.Another kind of structure is an awl cock-type structure, and this structure can realize turn-offing but because it is to exert pressure by screw rod, can only determine opening degree by the number of turn-taking when control flow rate, and flow shows very indeterminate.
After flow set is good, by effect drive unsteady valve plug throttling, the pressure regulation of pressure feedback, keep constant flow constant by Regulation spring, diaphragm by second portion.
Traditional self-operated flow control valve is paid attention to the constant performance of assurance rate-of flow, but can not guarantee to cut off rate-of flow under the off state fully, thereby does not have the shutoff effect, and vent flow is still very big under many circumstances.Just must increase a shut-off valve like this on engineering, this will increase cost and installing space.
Summary of the invention
The purpose of this utility model is to realize that on the basis of true what control valve constant current performance valve cuts off rate-of flow down in off position fully, thereby a kind of self-operated flow control valve of plane sealing is provided.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of self-operated flow control valve of plane sealing, comprise valve body, valve body is provided with liquid entering hole and liquid outlet, the planar friction auxiliary structure that liquid entering hole and liquid outlet are made up of the moving plate and the still of plane shape is separated, have through flow hole on still and the moving plate, the axial fixedly connected valve shaft of moving plate.
Implementation method of the present utility model is the fluid outlet at valve, and a still and a moving plate that has through flow hole that has through flow hole is set.It is enough smooth and smooth that want on contacted two planes of still and moving plate, and two planes apply certain pressure when fitting together makes it can relative movement but do not have the gap, and the plain grinding that this situation is general all can be realized with grinding.Moving plate is driven by valve shaft, changes the coincidence area of the through flow hole of still and moving plate by relative displacement, and overflow section is long-pending also to have reached the flow that changes by fluid thereby change, and rate-of flow can be cut off fully when needs turn-off.
Through flow hole on still and the moving plate is rule, symmetry or grading structure form, and the shape of through flow hole can have various ways, its objective is when guaranteeing still with the moving plate relative movement, and two through flow holes have coincidence to communicate and dislocation is closed two states and got final product.
Valve shaft radially is fixed with dial, makes the flow indication more accurate, obvious.
The utility model patent mainly is that the flow set regulatory function member to self-operated flow control valve improves, make its flow set and regulatory function desirable more, and solved the difficult problem that to turn-off fluid fully simultaneously, be applied to solve the problem of hydraulic misadjustment and the reasonable transmission ﹠ distribution of energy in the pipe network systems such as central heat supply, central air-conditioner.Compared with prior art, the beneficial effects of the utility model are: one, reduced the moment of rotation of regulating flow.Because smooth smooth its frictional force of plane processing is just very little, moment of rotation is just little a lot of than traditional pivoted housing formula structure, and this is for can save very big cost with the valve of electric actuator control.Two, the linear properties of flow and valve shaft corner improves, because the hole on the plane is easy to be processed into rule or gradual change form, makes the corresponding flow that turns an angle, and linear properties is controlled easily and realized, makes flow scale more regular.Three, make flow control valve have turn-off function.This type of traditional valve does not possess turn-off function, and vent flow is very big, even flow is transferred to minimum, still can not satisfy usage requirement.When needs turn-off rate-of flow, must install a cutting-off valve again additional, the application of Flow valve is restricted, the also corresponding increase of installing space and overall cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure, 1-valve body, 2-liquid entering hole, 3-liquid outlet, 4-still, 5-moving plate, 6-through flow hole, 7-valve shaft, 8-dial, the 9-valve plug that floats, 10-feedback hole, 11-diaphragm, 12-Regulation spring, 13-first cavity, 14-second cavity.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be specified.
Self-operated flow control valve has the flow set adjusting and keeps two kinds of functions of constant flow.And the realization of these two functions is finished by two-part member in the valve.
The utility model is that the flow set adjusting member is made improvement.The self-operated flow control valve of a kind of plane sealing described in the utility model, comprise valve body 1, valve body 1 is provided with liquid entering hole 2 and liquid outlet 3, liquid entering hole 2 is separated with the planar friction auxiliary structure that liquid outlet 3 is made up of the moving plate 4 and the still 5 of plane shape, have through flow hole 6 on still 4 and the moving plate 5, moving plate 5 connects valve shaft 7.Because still 4 and moving plate 5 are provided with through flow hole 6, when valve shaft 7 drives moving plates 5 rotations, through flow hole is carried out in various degree covering, change its passage section and played the effect of regulating flow.The degree of finish and the flatness of still 4, the processing of moving plate 5 surface of contact are all very high, so there is not the gap after two planes are adjacent to fully, when through flow hole is hidden fully, can thoroughly turn-off fluid.
Through flow hole on still 4 and the moving plate 5 is rule, symmetry or grading structure form.Valve shaft 7 radially is fixed with dial 8.Control valve described in the utility model is rotating 90 °---but standard-sized sheet or full cut-off under 180 ° of corner situations, flow scale indication simultaneously is obviously.Valve shaft 7 drives moving plate 5 and is rotated, and when going to a certain angle, shows corresponding flow on the dial 8.
Keep the member of constant flow same as the prior art, these members comprise fixing valve plug 9, feedback hole 10, diaphragm 11 and the Regulation spring 12 of floating.Valve body 1 inside is provided with first cavity 13 and second cavity 14 of connection, still 4 is located at second cavity, 14 upper ends, the valve plug 9 that floats passes from two holes that communicate between first cavity 13 and second cavity 14, the flow in two holes can be regulated by unsteady valve plug 9, and diaphragm 11 and Regulation spring 12 are equipped with in valve plug 9 lower ends of floating.Liquid outlet 3 is communicated with by feedback hole 10 with the lower end of second cavity 14.When still 4 overlapped with through flow hole on the moving plate 5 or partially overlaps, second cavity 14 promptly was communicated with liquid outlet 3.
The self-operated flow control valve working principle of the utility model plane sealing is as follows:
When fluid by the liquid entering hole 2(direction of arrow) enter after, flow out by the moving plate 4 and the through flow hole on the still 5 of plane sealing in valve plug 9 self-regulating two holes again via floating, rotate the covering amount that changes through flow hole by moving plate 5, thereby change its cross-sectional flow area, realize flow set adjustment and unlatching, so that the function of closing.
When being set at a certain opening, if make its flow keep constant, then determine the factor of its flow, be mainly the pressure P 3 after entering the pressure P 2 before the still and flowing out still, if promptly P2-P3 is constant then its flow just keeps constant.Its principle is when P3 changes, be reduced to example with P3, pressure by feedback hole 10 diaphragms 11 cavity of resorptions also reduces thereupon, at this moment because P2 is constant, diaphragm 11 must be pressed down, driving the valve plug 9 that floats thus moves down, flow by diplopore is reduced and step-down, and P2 also reduces thereupon, makes the value of P2-P3 constant, be that the flow maintenance is constant, vice versa.
Claims (3)
1. the self-operated flow control valve of a plane sealing, comprise valve body (1), valve body (1) is provided with liquid entering hole (2) and liquid outlet (3), it is characterized in that: liquid entering hole (2) is separated with the planar friction auxiliary structure that liquid outlet (3) is made up of the moving plate (4) and the still (5) of plane shape, have through flow hole (6) on still (4) and the moving plate (5), moving plate (5) connects valve shaft (7).
2. the self-operated flow control valve of plane sealing according to claim 1 is characterized in that: the through flow hole on still (4) and the moving plate (5) is rule, symmetry or grading structure form.
3. the self-operated flow control valve of plane sealing according to claim 1 and 2, it is characterized in that: valve shaft (7) radially is fixed with dial (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201861090U CN202074078U (en) | 2011-06-03 | 2011-06-03 | Plane sealed self-operated flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201861090U CN202074078U (en) | 2011-06-03 | 2011-06-03 | Plane sealed self-operated flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202074078U true CN202074078U (en) | 2011-12-14 |
Family
ID=45112181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201861090U Expired - Lifetime CN202074078U (en) | 2011-06-03 | 2011-06-03 | Plane sealed self-operated flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202074078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221104A (en) * | 2011-06-03 | 2011-10-19 | 山西建工申华暖通设备有限公司 | Plane sealed self-operated flow control valve |
| CN102889390A (en) * | 2012-10-23 | 2013-01-23 | 苏州宇东暖通技术有限公司 | Hydraulic power-assistant valve device |
-
2011
- 2011-06-03 CN CN2011201861090U patent/CN202074078U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221104A (en) * | 2011-06-03 | 2011-10-19 | 山西建工申华暖通设备有限公司 | Plane sealed self-operated flow control valve |
| CN102889390A (en) * | 2012-10-23 | 2013-01-23 | 苏州宇东暖通技术有限公司 | Hydraulic power-assistant valve device |
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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: 20111214 |