CN105299279A - Pressure balance type electric valve - Google Patents
Pressure balance type electric valve Download PDFInfo
- Publication number
- CN105299279A CN105299279A CN201410376143.2A CN201410376143A CN105299279A CN 105299279 A CN105299279 A CN 105299279A CN 201410376143 A CN201410376143 A CN 201410376143A CN 105299279 A CN105299279 A CN 105299279A
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- Prior art keywords
- valve
- spool
- fluid
- screw rod
- pressure
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Abstract
The invention discloses a pressure balance type electric valve. The pressure balance type electric valve consists of a valve body, a valve cover, a driving mechanism, a water seal, a screw rod, a valve core leather bowl and a valve core, wherein the valve body has a fluid inlet and a fluid outlet; and the valve core is provided with a fluid channel. The valve core, the valve core leather bowl, the water seal, the screw rod and the valve rod are formed to a relatively closed balance cavity; and the balance cavity is communicated with the fluid inlet through a runner of the valve core. The screw rod is connected with the driving mechanism; and the driving mechanism can drive the valve core to perform a linear motion through the screw rod. The valve core downwards moves to stop the motion of a fluid between the fluid inlet and the fluid outlet to achieve a valve opening and closing effect. Because of the existence of the balance cavity, the pressure of the fluid on the valve core is balanced, so that the motion resistance of the valve core is reduced, and the torque and the energy consumption needed to open and close the valve are reduced. The pressure balance type electric valve is simple and compact in structure, small in volume, high in transmission efficiency, precise in control and stronger in reliability.
Description
Technical field
The present invention relates to mortor operated valve technology, be specially a kind of pressure balance type mortor operated valve.
Background technique
Existing pipeline valve many employings butterfly valve, ball valve and pilot valve, butterfly valve and ball valve exist opens moment greatly, can produce and use wearing and tearing, the shortcoming that working life is limited.
Pilot valve effectively solves this two shortcomings.But owing to adopting fluid pressure itself to promote valve body action, therefore there are the following problems.
1, valve crushing is serious.
2, valve body opening and closing is unreliable, there is the problem cannot normally closing and open valve body when hydrodynamic pressure is too low.
3, there is the phenomenon that valve body resonance damages valve during fluid pressure fluctuations.
4, control runner easily to block.
5, pilot valve is difficult to accomplish fluid pressure regulation by self valve-opening mechanism.
6, valve flowing channel is complicated, Design and manufacture high expensive.
Summary of the invention
Hydrodynamic pressure is introduced spool bellows by the employing spool inner flow passage of the present invention's innovation, reaches spool pressure balance.Simultaneously by screw rod by External Force Acting on spool, open and close valve.
Because the downforce acting on spool of bellows is identical in the lifting force of spool with fluid matasomatism, therefore open and close external force required for valve just very little, reach the object that little moment is opened.Employ conducting and cut-off that mode that pilot valve epithelium spool closes valve port controls fluid simultaneously, therefore there is the working life that pilot valve is the same.
Because the present invention adopts screw rod to control the enable possition of spool, control spool opening and closing without the need to hydrodynamic pressure, therefore there is not the valve crushing caused thus.It also avoid the problem that pilot fluid hypotony cannot normally use simultaneously.
The present invention adopts screw rod to control spool opening and closing, and due to the localization characteristics of screw rod, spool is fixed on control position relatively, by the pressure influence of fluid, therefore can not thoroughly solve valve body resonance problem during fluid pressure fluctuations.
Owing to adopting screw rod to control spool opening and closing, therefore can rotate the aperture of adjustment spool according to screw rod, reach fluid voltage regulation function.
The present invention does not adopt the fluid control principle of pilot valve, does not have valve control chamber runner and relevant control valve, therefore has valve flowing channel simple, and overall structure is simple, the feature that design and manufaction cost is relatively on the low side.
Accompanying drawing explanation
Accompanying drawing is a kind of schematic diagram of pressure balance type mortor operated valve
Mark in accompanying drawing: 1, valve body, 2, valve gap, 3, driving mechanism, 4, water seal, 5, screw rod, 6, spool leather cup, 7, spool, 8, lower flow channel, 9, upper runner, 10, counter balance pocket, 11, fluid output, 12, fluid input.
Embodiment
Be connected with spool 7 by spool leather cup 6 as shown in drawings, spool leather cup 6 and spool 7 are arranged in valve body 1.
Screw rod 5 is screwed in spool 7, and the length ratio of external screw rod 5 in adjustment spool 7 can be rotated by screw rod 5.
Valve gap 2 is fixed to valve body 1 top, screw rod 5 is connected with driving mechanism 3 by water seal 4.
Valve gap 2, spool leather cup 6, spool 7, screw rod 5 and water seal 4 is made jointly to form one only by upper runner 9, lower flow channel 8 and the outside counter balance pocket 10 closed communicated.
Driving mechanism 3 drives screw rod 5 to rotate, and is screwed in, screws out by screw rod 5 in spool 7, controls spool 7 and axially do straight line motion along screw rod 5 in valve body 1.
Claims (4)
1. a pressure balance type mortor operated valve, comprise the valve body 1 with fluid input 12 and fluid output 11, screw rod 5, spool leather cup 6 and spool 7 are installed in valve body 1, spool 7 has lower flow channel 10 and upper runner 9 respectively, be arranged on the water seal 4 on valve body 1 top, valve gap 2 and driving mechanism 3, it is characterized in that: spool 7, spool leather cup 6, screw rod 5, water seal 4 and valve gap 2 form an airtight counter balance pocket 10, counter balance pocket 10 communicates with the fluid input 12 of valve body 1 by means of only the upper runner 9 of spool 7, lower flow channel 10.
2. a kind of pressure balance type mortor operated valve according to claim 1, it is characterized in that: the pressure of counter balance pocket 10 pairs of spools 7 keeps proportional relationship with the pressure of fluid input 12 pairs of spools 7 all the time, utilize counter balance pocket 10 inner fluid to reduce to control the moment needed for spool 7 to the mode that spool 7 pressure is cancelled out each other to spool 7 pressure and fluid input 12 fluid, and use external force (power beyond fluid) to carry out the method for Open valve.
3. a kind of pressure balance type mortor operated valve according to claim 2, it is characterized in that: spool 7 does straight line motion along the axial of screw rod 5 in valve body 1 inside, use screw rod 5 to adjust the position of spool 7 in valve body 1 to control the method for the hydrodynamic pressure of fluid output 11.
4. a kind of pressure balance type mortor operated valve according to claim 3, it is characterized in that: driving mechanism 3 can drive screw rod 5 do clockwise and be rotated counterclockwise, thus band movable valve plug 7 upwards runs or moves downward, the fluid that the motion of spool 7 can block in valve body 1 between fluid input 12 and fluid output 11 runs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410376143.2A CN105299279A (en) | 2014-08-02 | 2014-08-02 | Pressure balance type electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410376143.2A CN105299279A (en) | 2014-08-02 | 2014-08-02 | Pressure balance type electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105299279A true CN105299279A (en) | 2016-02-03 |
Family
ID=55196884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410376143.2A Pending CN105299279A (en) | 2014-08-02 | 2014-08-02 | Pressure balance type electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105299279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090389A (en) * | 2016-08-29 | 2016-11-09 | 杨安旭 | The electrically operated valve that a kind of big model can quantitatively regulate |
| CN107327619A (en) * | 2017-01-19 | 2017-11-07 | 王大海 | Booster type valve mechanism and the control method of keying |
-
2014
- 2014-08-02 CN CN201410376143.2A patent/CN105299279A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090389A (en) * | 2016-08-29 | 2016-11-09 | 杨安旭 | The electrically operated valve that a kind of big model can quantitatively regulate |
| CN107327619A (en) * | 2017-01-19 | 2017-11-07 | 王大海 | Booster type valve mechanism and the control method of keying |
| CN107327619B (en) * | 2017-01-19 | 2024-04-12 | 王大海 | Power-assisted valve structure and opening and closing control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |