CN103398179A - Electric control valve - Google Patents
Electric control valve Download PDFInfo
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- CN103398179A CN103398179A CN2013103643022A CN201310364302A CN103398179A CN 103398179 A CN103398179 A CN 103398179A CN 2013103643022 A CN2013103643022 A CN 2013103643022A CN 201310364302 A CN201310364302 A CN 201310364302A CN 103398179 A CN103398179 A CN 103398179A
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- valve
- spool
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- control valve
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Abstract
The invention provides an electric control valve, belongs to the technical field of valves, and solves the problem that valve elements produce larger resistance to fluids due to the fact that the fluids inside conventional valves vertically impact blocking surfaces of the valve elements. The electric control valve comprises a valve body provided with a valve cavity, wherein a valve element and a valve rod are arranged in the valve body, the valve rod is connected with the valve element and can push the valve element to move in the valve cavity, one end of the valve rod extends out of the valve body to be connected with an actuator, the valve body is provided with a water inlet and a water outlet and communicated with the valve cavity, and an upper valve seat and a lower valve seat are arranged inside the valve body. When the upper end of the valve element is propped against the upper valve seat and the lower end of the valve element is propped against the lower valve seat, the water inlet and the water outlet are isolated, and an inclined part which can reduce the resistance of the fluids is arranged on the valve element; the inclined part is arranged on the valve element and guides the fluids in the flowing direction instead of vertical arrangement to block the fluids, so that the resistance of the surface of the valve element to the fluids can be reduced.
Description
Technical field
The invention belongs to valve technology field, relate to a kind of electric control valve.
Background technique
Electric control valve is the important performance element instrument in the industrial automation process control., along with the automaticity of industrial field is more and more higher, just be applied in more and more in various field of industrial productions.Compare and have obvious advantage with traditional pneumatic control valve: energy-conservation of electric control valve just consumes electric energy when work, non-carbon-emitting is environmental protection more, need not the complicated gentle pump work of pneumatic pipeline station, convenience quick for installation.The Flow characteristics of electric control valve is that MEDIA FLOW is through the relative discharge of electric control valve and its aperture Relations Among under valve two ends pressure reduction keeps constant condition.The Flow characteristics of electric control valve has three kinds: linear performance, equal percentage characteristics and parabolic characteristic.
Electric control valve generally comprises final controlling element, valve, and valve rod and the final controlling element of valve link, and by final controlling element, come control valve to regulate, and also can form the intelligent network control system according to controlling needs, and optimization control realizes remote monitoring.Working principle: there is controller the final controlling element the inside, and controller is converted to current signal the angle stroke signal of stepper motor, electric machine rotation, and by gear, lever, perhaps gear adds lever, and the band ovable valve stem operates, and realizes rectilinear path or the rotation angle stroke of spool.
a kind of electric control valve patent [application number: CN201220571237.1] as China's announcement, this electric control valve comprises the inner valve body of cavity that is, the two ends of valve body are respectively entrance point and outlet end, valve body is provided with guide cylinder, bottom in valve body has fixed base one, middle part in valve body has fixed base two, the guide cylinder bottom is connected on fixed base one, the guide cylinder middle part is connected in fixed base two places, the guide cylinder sidepiece has water port, spool is positioned at guide cylinder, valve rod is inner to link with spool, the valve rod outer end is stretched out valve body and is linked with the electric actuator that is connected in the valve body outside.Spool coordinates with guide cylinder, also can close when making the entrance point of valve body and outlet end have large pressure reduction, has higher closing force, and spool does not directly coordinate with valve body simultaneously, greatly reduces the accuracy of manufacturing of valve body.But in this valve pocket, the flow direction of fluid is perpendicular to the prevent surface of spool, no matter open, still closes, and fluid is all vertically to impinge upon the spool prevent surface, and the convection cell resistance is larger.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed the little electric control valve of a kind of fluid resistance.
purpose of the present invention can realize by following technical proposal: a kind of electric control valve, comprise the valve body with valve pocket, be provided with spool in valve body, be connected with spool and can promote spool moves in valve pocket valve rod, described valve rod one end stretches out valve body and is used for linking with final controlling element, described valve body has water intake and water outlet is connected with valve pocket, it is characterized in that, have upper valve base and lower valve base in described valve body, when spool upper end and upper valve base lean, when spool lower end and lower valve base lean, described water intake and water outlet are in the partition state, has the rake that can reduce fluid resistance on described spool.
This electric control valve moves up and down by final controlling element band ovable valve stem, and the band movable valve plug moves up and down in valve pocket, and the position of spool and upper and lower valve seat changes, thereby reaches the purpose of regulating valve flow.Have rake on spool, rake guides along the inflow direction of fluid, rather than vertically arranges and stop that fluid passes through, so can reduce the resistance of spool face convection cell.
In above-mentioned electric control valve, described rake comprises on spool the curved surface one to water intake direction protrusion that is circular arc, and described curved surface one tilts to the water intake direction.When final controlling element band ovable valve stem makes spool move up and down, can make rating curve become equal percentage, and because curved surface one surface ratio of spool is more smooth and steeper, guiding direction of flow water outlet, so the convection cell resistance is little.
As another kind of scheme, in above-mentioned electric control valve, described rake comprises the inclined-plane that is positioned at the spool sidepiece, and described inclined-plane tilts to the water intake direction.Due to spool chamfered surface more smooth and steeper, guiding direction of flow water outlet, so the convection cell resistance is little.
In above-mentioned electric control valve, described upper valve base have can with the contacted curved surface two in the upper end of spool.Curved surface two can reduce with spool on frictional force during end in contact, reduce wear, improve the life-span; Between valve inner, part is without other structure simultaneously, and valve body is easy to casting.
In above-mentioned electric control valve, described lower valve base have can with the contacted curved surface three in the lower end of spool.Curved surface three can reduce with spool under frictional force during end in contact, reduce wear, improve the life-span; Between valve inner, part is without other structure simultaneously, and valve body is easy to casting.
In above-mentioned electric control valve, described valve core outer surface closely is enclosed with rubber layer.The encapsulate sealing is adopted in the sealing of spool and upper valve base and lower valve base, and rubber layer has been evaded the requirement higher to the spool machining accuracy, and sealing is reliable, and the rubber layer rub resistance, improves spool working life.
In above-mentioned electric control valve, the thickness of described rubber layer is 1mm-3mm.
In above-mentioned electric control valve, offer the mounting hole that is communicated with valve pocket on described valve body, described valve rod passes mounting hole and is threaded with spool, is arranged with on described valve rod can be connected with valve body screw thread and with the pressure cap of mounting hole shutoff.The mounting hole that valve rod passes the upper end of valve body is connected with spool by screw thread, and pressure cap is connected with valve body by screw thread.
In above-mentioned electric control valve, be arranged with successively Graphite pad, packing ring and spring on described valve rod, described Graphite pad, packing ring and spring all are arranged in mounting hole and described Graphite pad one end face and pressure cap and lean, and have the gear of protrusion on described valve body along with the spring lower end, leaning and spring is blocked in mounting hole.Spring, packing ring, Graphite pad are placed in the mounting hole of the upper end of valve body successively, and spring action on packing ring, is pressed on pressure cap Graphite pad.The seal ring of the relative common material of Graphite pad can be high temperature resistant, extends sealing life.
Compared with prior art, this electric control valve has the following advantages:
1. upper valve base is by curved surface two and seal spool, and lower valve base is by curved surface three and seal spool, and valve inner is without other structures, and is simple in structure, and valve body is easily cast.
2. the rake of spool uniqueness design, not only can make flow become equal percentage curve, and have the little characteristics of flow resistance.
3. spool face, with rubber layer parcel and upper and lower valve base sealing, has been evaded the requirement higher to the spool machining accuracy, and sealing is reliable.
4. use Graphite pad replacement seal circle, high temperature resistant, sealing life is long.
Description of drawings
Fig. 1 is embodiment one structural representation.
Fig. 2 is embodiment two structural representation.
In figure, 1, valve body; 1a, valve pocket; 1b, water intake; 1c, water outlet; 1d, mounting hole; 1e, gear edge; 2, final controlling element; 3, spool; 3a, curved surface one; 3b, inclined-plane; 4, valve rod; 5, upper valve base; 5a, curved surface two; 6, lower valve base; 6a, curved surface three; 7, rubber layer; 8, pressure cap; 9, Graphite pad; 10, packing ring; 11, spring.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
More difficult during 1 casting of existing motorized adjustment valve body, usually spool 3 to close end face vertical with flow direction, cause the resistance of spool 3 convection cells larger; And the effect that spool 3 plays is also fewer, and sealing effect is unreliable, and is higher to the machining accuracy of spool 3, and the seal ring that seals is easily aging under high-temperature condition, causes valve to leak.As shown in Figure 1, this electric control valve comprises the valve body 1 with valve pocket 1a, is provided with spool 3 in valve body 1, with spool 3, is connected and can promotes spool 3 moves in valve pocket 1a valve rod 4, and valve rod 4 one ends stretch out valve body 1 and are used for linking with final controlling element 2.Valve body 1 has water intake 1b and water outlet 1c is connected with valve pocket 1a, have upper valve base 5 and lower valve base 6 in valve body 1, when spool 3 upper ends and upper valve base 5 leans, when spool 3 lower ends and lower valve base 6 lean, described water intake 1b and water outlet 1c are in the partition state, have the rake that can reduce fluid resistance on spool 3.
Rake comprises on spool 3 curved surface one 3a to water intake 1b direction protrusion that is circular arc, and curved surface one 3a tilts to water intake 1b direction.Rake comprises on spool 3 curved surface one 3a to water intake 1b direction protrusion that is circular arc, and curved surface one 3a tilts to water intake 1b direction.When final controlling element 2 band ovable valve stems 4 make spool 3 move up and down, can make rating curve become equal percentage, and because curved surface one 3a of spool 3 is more smooth and steeper, the convection cell resistance reduce.Upper valve base 5 have can with contacted curved surface two 5a in the upper end of spool 3, lower valve base 6 have can with contacted curved surface three 6a in the lower end of spool 3.When valve was in closed condition, curved surface two 5a and curved surface three 6a can fit with spool 3 appearances, and on curved surface two 5a and curved surface one 3a, contacted part is complementary, the sealing effect while improving valve closing.
Spool 3 intimate are enclosed with rubber layer 7, and the profile of rubber layer 7 is consistent with spool 3 outer surfaces, and the thickness of rubber layer 7 is 1mm-3mm, and rubber layer 7 thickness of the present embodiment are 1.5mm.Rubber layer 7 adopts the encapsulate techniques to be coated on spool 3 outer surfaces,, because rubber material is softer and flexible, by soft seal, evaded the higher requirement of spool 3 machining accuracies, and with upper valve base 5, seal when lower valve base 6 contact more reliable and stable.
Offer the mounting hole 1d that is communicated with valve pocket 1a on valve body 1, valve rod 4 one ends pass mounting hole 1d and are threaded with spool 3, and the other end and final controlling element 2 link, and are arranged with on valve rod 4 can be connected with valve body 1 screw thread and with the pressure cap 8 of mounting hole 1d shutoff.Be arranged with successively Graphite pad 9, packing ring 10 and spring 11 on valve rod 4, Graphite pad 9, packing ring 10 and spring 11 all are arranged in mounting hole 1d and Graphite pad 9 one end faces and pressure cap 8 and lean, and the gear that has protrusion on valve body 1 leans and spring 11 is blocked in mounting hole 1d along 1e and spring 11 lower ends.Graphite pad 9 is used for sealing mounting hole 1d, and the seal ring of common material can be high temperature resistant relatively, extends sealing life.
Embodiment two
As shown in Figure 2, with embodiment's one difference, be that rake comprises the inclined-plane 3b that is positioned at spool 3 sidepieces, inclined-plane 3b tilts to water intake 1b direction.Have same plane relative to inclined-plane 3b, an angle of inclination on upper valve base 5, when spool 3 moves down, when its lower end and lower valve base 6 leant, inclined-plane 3b also leant with the plane of upper valve base 5, and valve is in closed condition at this moment.When spool 3 moves up while opening valve, because inclined-plane 3b tilts to water intake 1b direction, so fluid is along the channeling direction of inclined-plane 3b to water outlet 1c direction, the effect by inclined-plane 3b namely can reduce fluid resistance, makes again processing more simple and convenient.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (9)
1. electric control valve, comprise the have valve pocket valve body (1) of (1a), be provided with spool (3) in valve body (1), be connected with spool (3) and can promote spool (3) moves in valve pocket (1a) valve rod (4), described valve rod (4) one ends stretch out valve body (1) and are used for linking with final controlling element (2), described valve body (1) has water intake (1b) and water outlet (1c) is connected with valve pocket (1a), it is characterized in that, have upper valve base (5) and lower valve base (6) in described valve body (1), when spool (3) upper end and upper valve base (5) lean, spool (3) lower end and lower valve base (6) while leaning described water intake (1b) and water outlet (1c) be in the partition state, described spool has the rake that can reduce fluid resistance on (3).
2. electric control valve according to claim 1, is characterized in that, described rake comprises on spool (3) curved surface one (3a) to water intake (1b) direction protrusion that is circular arc, and described curved surface one (3a) tilts to water intake (1b) direction.
3. electric control valve according to claim 1, is characterized in that, described rake comprises the inclined-plane (3b) that is positioned at spool (3) sidepiece, and described inclined-plane (3b) tilts to water intake (1b) direction.
4. electric control valve according to claim 2, is characterized in that, described upper valve base (5) have can with the contacted curved surface two in the upper end of spool (3) (5a).
5. electric control valve according to claim 3, is characterized in that, described lower valve base (6) have can with the contacted curved surface three in the lower end of spool (3) (6a).
6. according to claim 1 and 2 or 3 or 4 or 5 described electric control valves, is characterized in that, described spool (3) intimate is enclosed with rubber layer (7).
7. electric control valve according to claim 6, is characterized in that, the thickness of described rubber layer (7) is 1mm-3mm.
8. electric control valve according to claim 7, it is characterized in that, offer the mounting hole (1d) that is communicated with valve pocket (1a) on described valve body (1), described valve rod (4) passes mounting hole (1d) and is threaded with spool (3), is arranged with on described valve rod (4) can be connected with valve body (1) screw thread and with the pressure cap (8) of mounting hole (1d) shutoff.
9. electric control valve according to claim 8, it is characterized in that, be arranged with successively Graphite pad (9), packing ring (10) and spring (11) on described valve rod (4), described Graphite pad (9), packing ring (10) and spring (11) all are arranged in mounting hole (1d) and described Graphite pad (9) one end faces and pressure cap (8) and lean, and the gear that has protrusion on valve body (1) leans and spring (11) is blocked in mounting hole (1d) with spring (11) lower end along (1e).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103643022A CN103398179A (en) | 2013-08-20 | 2013-08-20 | Electric control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103643022A CN103398179A (en) | 2013-08-20 | 2013-08-20 | Electric control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103398179A true CN103398179A (en) | 2013-11-20 |
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ID=49561864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103643022A Pending CN103398179A (en) | 2013-08-20 | 2013-08-20 | Electric control valve |
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| Country | Link |
|---|---|
| CN (1) | CN103398179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211461A (en) * | 2018-03-20 | 2018-06-29 | 倪秀秀 | Switching valve and the backwash fore filter with switching valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230248A (en) * | 1996-09-12 | 1999-09-29 | Ksb股份公司 | Short life valve |
| CN1464948A (en) * | 2001-07-14 | 2003-12-31 | Ari阿尔伯特瑞斯特配件有限及两合公司 | Gate valve |
| CN201521656U (en) * | 2009-10-29 | 2010-07-07 | 黄育进 | Stop type regulating valve |
-
2013
- 2013-08-20 CN CN2013103643022A patent/CN103398179A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230248A (en) * | 1996-09-12 | 1999-09-29 | Ksb股份公司 | Short life valve |
| CN1464948A (en) * | 2001-07-14 | 2003-12-31 | Ari阿尔伯特瑞斯特配件有限及两合公司 | Gate valve |
| CN201521656U (en) * | 2009-10-29 | 2010-07-07 | 黄育进 | Stop type regulating valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211461A (en) * | 2018-03-20 | 2018-06-29 | 倪秀秀 | Switching valve and the backwash fore filter with switching valve |
| CN108211461B (en) * | 2018-03-20 | 2023-09-19 | 倪秀秀 | Switching valve and back flush prefilter with switching valve |
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Application publication date: 20131120 |