CN103925399A - Diaphragm-type pneumatic proportional pressure reducing valve of edge cam driven by servo motor directly - Google Patents
Diaphragm-type pneumatic proportional pressure reducing valve of edge cam driven by servo motor directly Download PDFInfo
- Publication number
- CN103925399A CN103925399A CN201410190889.4A CN201410190889A CN103925399A CN 103925399 A CN103925399 A CN 103925399A CN 201410190889 A CN201410190889 A CN 201410190889A CN 103925399 A CN103925399 A CN 103925399A
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- Prior art keywords
- valve
- valve body
- spring
- end surface
- diaphragm
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
Abstract
The invention provides a diaphragm-type pneumatic proportional pressure reducing valve of an edge cam driven by a servo motor directly. An output shaft of the serve motor is in clearance fit with a sun gear of a planetary reducer, a planet gear of the planetary reducer is connected with an upper edge cam body, the upper edge cam body is matched with a lower edge cam body, the lower portion of the lower edge cam body is connected with a pressure adjusting spring, the lower end of the pressure adjusting spring is connected onto a spring end cover, a diaphragm is fixed between an upper valve body and a lower valve body in a compressed mode and located on the lower portion of the spring end cover, an overflow valve is installed in the middle of the spring end cover, a valve rod penetrates through the diaphragm to butt against a valve port of the overflow valve, the lower end of the valve rod is connected with a valve element, an air inlet and an air outlet are formed in the two sides of a lower valve body, an air feedback hole is formed in the lower valve body, the outer portion of the valve element is connected with a reset spring, and the valve element, the reset spring and a lower end cover are connected in a sealed mode. The servo motor directly drives the edge cam to compress the springs so as to achieve linear motion of the valve element, the structure is compact, transmission is stable, and dynamic control can be achieved.
Description
Technical field
The invention belongs to pneumatic proportional pressure-reducing valve technical field, particularly a kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam.
Background technique
Reduction valve is by changing orifice size, make fluid by time produce pressure drop, inlet pressure is reduced to the outlet pressure of a certain needs, and relies on the energy of medium itself, make the automatically stable pressure controlled valve of maintenance of outlet pressure.Traditional reduction valve by pilot pressure situation point has definite value, fixed than, surely differ from three kinds, can be divided into direct-acting type reduce pressure two kinds of relief valve and piloted reducers according to structure and working principle.They are mechanical Manual pressure modulating valve, and degree of regulation is not high enough.Such as direct-acting type spring film piston reduction valve downstream pressure excursion is generally 15%-20% left and right, its downstream pressure excursion of piloted reducer is also in 5%-10% left and right.Secondly, traditional relief valve can only realize static cost control, when the working pressure of output need to be along with load in real time, while changing quickly and accurately, traditional reduction valve just can not meet the requirement of work.
Electro-pneumatic proportional pressure valve is on the basis of traditional relief valve, adopts electromechanical conversion equipment to convert electrical signals to displacement signal, and continuous control spool stroke is realized control to working medium pressure in pneumatic system.Electro-pneumatic proportional pressure valve is a kind of dynamic adjustments pressure valve of analog amount, compared with can only working under static mode with traditional relief valve, electro-pneumatic proportional pressure valve can need to carry out in real time, control rapidly according to load output gas pressure, response ratio is very fast, stable working, automaticity is higher, can carry out Open loop and closed loop control.But, the conventional electrical proportional pressure valve adopting in current industrial reality often adopts custom-designed direct current proportion electro-magnet to realize the adjusting of valve delivery pressure, this traditional Proportional valve cost is high, dynamic and static properties is all more inferior, there are certain dead band and stagnant ring, and the linearity is poor, in incompressible air, the pollution capacity of oil and water is poor, and during opposing lathe uses, the performance of vibratory impulse is lower.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of actuating motor directly to drive the diaphragm type pneumatic proportional pressure-reducing valve of end cam, pass through driven by servomotor, can accurately automatically regulate the aperture of reduction valve, realize the problem of accurately controlling downstream pressure, improve the dynamic performance of valve.
In order to achieve the above object, technological scheme of the present invention is as follows:
A kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam, comprise shell 8, actuating motor 1 is fixed on the upper end cap 3 of shell 8 tops connections, sun gear 2 Spielpassung of actuating motor 1 output shaft and planetary reducer, the planet wheel 4 of planetary reducer is connected with upper-end surface cam 10, tapered roller bearing 7 outer rings and inner ring are located by gear ring 31 and upper-end surface cam 10 respectively, deep groove ball bearing 29 outer rings and inner ring are located by upper valve body 13 and upper-end surface cam 10 respectively, upper valve body 13 tops and shell 8 are connected, upper-end surface cam 10 coordinates with the lower end surface cam 12 that is positioned at upper valve body 13, cam 12 bottoms in lower end surface are connected with pressure adjusting spring 25, pressure adjusting spring 25 lower ends are connected on spring end cap 24, upper valve body 13 is connected with lower valve body 16, diaphragm 21 is pressed abd fixed between upper valve body 13 and lower valve body 16, be positioned at below spring end cap 24, relief valve 23 is housed in the middle of spring end cap 24, valve rod 20 withstands on relief valve 23 valve ports through diaphragm 21, valve rod 20 lower ends are connected with spool 19, lower valve body 16 both sides are provided with suction port and air outlet, lower valve body 16 inside are provided with gas feedback hole 15, spool 19 is outside to be connected with Returnning spring 17, spool 19, Returnning spring 17 is connected with lower valve body 16 lower seal by lower end cap 18.
Between described upper-end surface cam 10 and lower end surface cam 12, ball 11 is housed, sliding friction is converted into rolling friction, the second key 27 is housed on lower end surface cam 12, upper valve body 13 1 sides have guiding groove 26, the second keys 27 and slide along guiding groove 26.
In the time that the closed loop that adopts computer to carry out pressure is controlled automatically, at the air outlet place of lower valve body 16, sensor is installed; Or at the air outlet place of lower valve body 16 dress pressure gauge, artificially by the speed of actuating motor 1, adjust the rolling reduction of pressure adjusting spring 25 on diaphragm 21, reach required delivery pressure.
The present invention compared with prior art, has the following advantages: the direct Driving plane cam of actuating motor Compress Spring, realize spool straight line motion, compact structure, stable drive; By detecting valve export pressure, build automatically controlled servo-system, realize closed loop control, can be in real time, fast, the delivery pressure of fine adjustment valve, realize dynamically control, improve the dynamic performance of valve.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is upper-end surface of the present invention cam 10, lower end surface cam 12, ball 11 connection diagrams.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to Fig. 1, a kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam, comprise shell 8, actuating motor 1 is fixed on the upper end cap 3 of shell 8 tops connections, the sun gear 2 of actuating motor 1 output shaft and planetary reducer is by first key 32 Spielpassung, the planet wheel 4 of planetary reducer is connected with upper-end surface cam 10 with bearing pin 6 by axle sleeve 5, drive upper-end surface cam 10 to rotate, tapered roller bearing 7 outer rings and inner ring are located by gear ring 31 and upper-end surface cam 10 respectively, deep groove ball bearing 29 outer rings and inner ring are located by upper valve body 13 and upper-end surface cam 10 respectively, upper valve body 13 tops and shell 8 are connected by the first pin 9 and the first hex head bolt 28, upper-end surface cam 10 coordinates with the lower end surface cam 12 that is positioned at upper valve body 13, cam 12 bottoms in lower end surface are connected with pressure adjusting spring 25, pressure adjusting spring 25 lower ends are connected on spring end cap 24, upper-end surface cam 10 promotes lower end surface cam 12 and compresses pressure adjusting spring 25, upper valve body 13 is connected with lower valve body 16 by the second pin 14 and the second hex head bolt 22, diaphragm 21 is pressed abd fixed between upper valve body 13 and lower valve body 16, be positioned at below spring end cap 24, relief valve 23 is housed in the middle of spring end cap 24, valve rod 20 withstands on relief valve 23 valve ports through diaphragm 21, valve rod 20 lower ends are connected with spool 19, pressure adjusting spring 25 promotes diaphragm 21 by spring end cap 24, band ovable valve stem 20 and spool 19 move up and down, lower valve body 16 both sides are provided with suction port and air outlet, lower valve body 16 inside are provided with gas feedback hole 15, by gas feedback hole 15, air outlet gas pressure change is fed back to diaphragm 21, spool 19 is outside to be connected with Returnning spring 17, spool 19, Returnning spring 17 is connected with lower valve body 16 lower seal by lower end cap 18.
Actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve that end cam drives, when work, inner axial force is delivered on upper end cap 3 by tapered roller bearing 7, actuating motor 1 is by first key 32 and sun gear 2 Spielpassung, and 1 transmitting torque of actuating motor, does not bear thrust load like this.
With reference to Fig. 2, rotatablely moving of actuating motor 1 output shaft is converted into axial linear movement by described upper-end surface cam 10 and lower end surface cam 12, compact structure, stable drive, between upper-end surface cam 10 and lower end surface cam 12, ball 11 is housed, sliding friction is converted into rolling friction, and transmission efficiency is high; The second key 27 is housed on lower end surface cam 12, and upper valve body 13 1 sides have guiding groove 26, the second keys 27 and slide along guiding groove 26, have limited lower end surface cam 12 and have rotated, and ensure that it only has axial motion.
In the time that the closed loop that adopts computer to carry out pressure is controlled automatically, at the air outlet place of lower valve body 16, sensor is installed; Or at the air outlet place of lower valve body 16 dress pressure gauge, artificially by the speed of actuating motor 1, adjust the rolling reduction of pressure adjusting spring 25 on diaphragm 21, reach required delivery pressure.
Working principle of the present invention is:
Before work, need to preset decompression pressure, after system starts, actuating motor 1 reception control signal, by planetary reducer drive upper-end surface cam 10 promote lower end surface cam 12 move up and down compression pressure adjusting spring 25, pressure adjusting spring 25 promotes diaphragm 21 by spring end cap 24 and is with movable valve plug straight line motion Shang Xia 19, thereby realizes the adjusting to valve outlet port gas pressure.The closed loop control of outlet pressure is equipped with pressure transducer detected pressures and is realized at reduction valve air outlet place.Actuating motor 1 is by key and sun gear 2 Spielpassung, and 1 transmitting torque of actuating motor, does not bear thrust load like this, has ensured the reliably working of system.
Claims (3)
1. an actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam, comprise shell (8), it is characterized in that: actuating motor (1) is fixed on the upper end cap (3) of shell (8) top connection, sun gear (2) Spielpassung of actuating motor (1) output shaft and planetary reducer, the planet wheel (4) of planetary reducer is connected with upper-end surface cam (10), tapered roller bearing (7) outer ring and inner ring are respectively by gear ring (31) and upper-end surface cam (10) location, deep groove ball bearing (29) outer ring and inner ring are respectively by upper valve body (13) and upper-end surface cam (10) location, upper valve body (13) top and shell (8) are connected, upper-end surface cam (10) and be positioned at upper valve body (13) lower end surface cam (12) coordinate, lower end surface cam (12) bottom is connected with pressure adjusting spring (25), pressure adjusting spring (25) lower end is connected on spring end cap (24), upper valve body (13) is connected with lower valve body (16), diaphragm (21) is pressed abd fixed between upper valve body (13) and lower valve body (16), be positioned at spring end cap (24) below, relief valve (23) is housed in the middle of spring end cap (24), valve rod (20) withstands on relief valve (23) valve port through diaphragm (21), valve rod (20) lower end is connected with spool (19), lower valve body (16) both sides are provided with suction port and air outlet, lower valve body (16) inside is provided with gas feedback hole (15), spool (19) is outside to be connected with Returnning spring (17), spool (19), Returnning spring (17) is connected with lower valve body (16) lower seal by lower end cap (18).
2. a kind of actuating motor according to claim 1 directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam, it is characterized in that: between described upper-end surface cam (10) and lower end surface cam (12), ball (11) is housed, sliding friction is converted into rolling friction, the second key (27) is housed on lower end surface cam (12), upper valve body (13) one sides have guiding groove (26), and the second key (27) slides along guiding groove (26).
3. a kind of actuating motor according to claim 1 directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam, it is characterized in that: in the time that the closed loop that adopts computer to carry out pressure is controlled automatically, at the air outlet place of lower valve body (16), sensor is installed; Or at the air outlet place of lower valve body (16) dress pressure gauge, artificially by the speed of actuating motor (1), adjust the rolling reduction of the upper pressure adjusting spring (25) of diaphragm (21), reach required delivery pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190889.4A CN103925399B (en) | 2014-05-07 | 2014-05-07 | A kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190889.4A CN103925399B (en) | 2014-05-07 | 2014-05-07 | A kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925399A true CN103925399A (en) | 2014-07-16 |
| CN103925399B CN103925399B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410190889.4A Expired - Fee Related CN103925399B (en) | 2014-05-07 | 2014-05-07 | A kind of actuating motor directly drives the diaphragm type pneumatic proportional pressure-reducing valve of end cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103925399B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847948A (en) * | 2015-05-07 | 2015-08-19 | 北京航空航天大学 | High-precision automatic control pressure reducer |
| CN111577495A (en) * | 2020-04-10 | 2020-08-25 | 一汽解放汽车有限公司 | Low-response diesel electric switch valve with double oil tanks completely isolated from air |
| CN111936778A (en) * | 2018-03-26 | 2020-11-13 | 株式会社富士金 | Overflow valve |
| CN113958743A (en) * | 2021-10-24 | 2022-01-21 | 浙江大学 | Gas proportion regulating valve insensitive to inlet pressure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1222430A (en) * | 1967-03-25 | 1971-02-10 | Patinvest Patent Und Invest A | Flow control valve |
| JP3482635B2 (en) * | 1998-09-24 | 2003-12-22 | 太陽鉄工株式会社 | Regulator pressure regulation mechanism |
| CN2709053Y (en) * | 2004-02-25 | 2005-07-13 | 易剑飞 | Cold ring rolling machine servo electric machinery driving cam feeding device |
| CN102748449A (en) * | 2012-07-02 | 2012-10-24 | 西南大学 | Planetary intelligent self-adaptive two-gear multi-cam automatic speed change driver |
| CN203272902U (en) * | 2013-04-22 | 2013-11-06 | 宁波星箭航天机械有限公司 | Combined type gas bottle valve |
-
2014
- 2014-05-07 CN CN201410190889.4A patent/CN103925399B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1222430A (en) * | 1967-03-25 | 1971-02-10 | Patinvest Patent Und Invest A | Flow control valve |
| JP3482635B2 (en) * | 1998-09-24 | 2003-12-22 | 太陽鉄工株式会社 | Regulator pressure regulation mechanism |
| CN2709053Y (en) * | 2004-02-25 | 2005-07-13 | 易剑飞 | Cold ring rolling machine servo electric machinery driving cam feeding device |
| CN102748449A (en) * | 2012-07-02 | 2012-10-24 | 西南大学 | Planetary intelligent self-adaptive two-gear multi-cam automatic speed change driver |
| CN203272902U (en) * | 2013-04-22 | 2013-11-06 | 宁波星箭航天机械有限公司 | Combined type gas bottle valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847948A (en) * | 2015-05-07 | 2015-08-19 | 北京航空航天大学 | High-precision automatic control pressure reducer |
| CN111936778A (en) * | 2018-03-26 | 2020-11-13 | 株式会社富士金 | Overflow valve |
| CN111577495A (en) * | 2020-04-10 | 2020-08-25 | 一汽解放汽车有限公司 | Low-response diesel electric switch valve with double oil tanks completely isolated from air |
| CN113958743A (en) * | 2021-10-24 | 2022-01-21 | 浙江大学 | Gas proportion regulating valve insensitive to inlet pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103925399B (en) | 2016-02-24 |
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Granted publication date: 20160224 Termination date: 20190507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |