CN108302232B - Improved structure of energy-saving precision pressure regulating valve - Google Patents
Improved structure of energy-saving precision pressure regulating valve Download PDFInfo
- Publication number
- CN108302232B CN108302232B CN201710026197.XA CN201710026197A CN108302232B CN 108302232 B CN108302232 B CN 108302232B CN 201710026197 A CN201710026197 A CN 201710026197A CN 108302232 B CN108302232 B CN 108302232B
- Authority
- CN
- China
- Prior art keywords
- pressure
- pressure regulating
- channel
- diaphragm
- feedback channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
- F16K17/085—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with diaphragm
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model provides an energy-saving precision pressure regulating valve improvement structure, it includes a body, and inside is equipped with main diaphragm and balanced diaphragm, this main diaphragm is mainly linked by the overflow pipe, and this balanced diaphragm is then linked by pressure regulating straight pole, after atmospheric pressure fluid got into the body, through the passageway that links to each other, feedback channel, and pressure regulating channel, cooperation this feedback channel inside orifice and the steel ball, use and control atmospheric pressure fluid with one-way circulation, and the straight pole rubber coating on the pressure regulating straight pole is located in the cooperation, and the diaphragm rubber coating on the main diaphragm, make whole in the fluidic circulation of atmospheric pressure more quick, and can cooperate overflow pipe and overflow hole to carry out quick pressure boost, the decompression with provide high accuracy output pressure.
Description
Technical Field
The invention relates to an improved structure of an energy-saving precision pressure regulating valve, which mainly utilizes a feedback channel to realize one-way circulation to regulate the flow of air pressure fluid, so that the feedback channel and the pressure regulating channel are in a balanced state, and an overflow pipe is matched with an overflow hole to achieve the purposes of quickly increasing and reducing pressure and providing high-precision output pressure.
Background
Generally, a common pressure regulating valve consumes a large amount of air pressure fluid in the process of pressure regulation, in order to meet the requirement of more precise automatic processing in the future, various factories and businessmen are concentrating on researching and developing relevant technologies capable of saving energy consumption in the process of manufacturing, and the inventor sets a passage in the structure in the precision pressure regulating valve of the prior novel patent M513296, so that the pressure regulating valve generates equal pressure and can feed back mutually, further, the energy can greatly reduce the consumption, and when redundant fluid is removed, the precision pressure regulating valve can be quite quiet.
The following inventor improves the above-mentioned patent, such as the "energy-saving precise pressure regulating valve" of taiwan new patent M523033, in which a pressure regulating straight rod is provided with a balance diaphragm and a main diaphragm at two ends, and the pressure regulating straight rod can prop against the balance diaphragm by pressure flowing into a corresponding channel, so that the internal pressure is formed without overflow, and can be continuously regulated, and the high-precision output pressure can be maintained.
Therefore, the aforesaid structure still has the disadvantage of being improved after practical application and research.
Disclosure of Invention
The invention relates to an improved structure of an energy-saving precision pressure regulating valve, which mainly aims to achieve the technical purpose that a plurality of channels arranged in a body are utilized, and a feedback channel throttling hole is matched with a steel ball, so that the flow of air pressure fluid can be regulated, the channels in the body are in a balanced state, and an overflow pipe is matched with an overflow hole, so that the invention can achieve the purpose of rapid pressure reduction.
The invention relates to an improved structure of an energy-saving precision pressure regulating valve, which is formed by connecting a pressure regulating air seat, a middle valve seat and a base, wherein a main diaphragm and a balance diaphragm are arranged in a body, and through a pressure fluid channel, a feedback channel and a pressure regulating channel, the pressure fluid can be balanced in the body by utilizing a steel ball arranged in the feedback channel and a throttling hole of the feedback channel, so that the balance diaphragm can vertically displace corresponding to a pressure regulating straight rod and a main diaphragm corresponding to an overflow pipe.
Through the linkage between the structures, the purposes of quick pressurization, pressure reduction and high-precision output pressure maintenance can be achieved besides no overflow and energy conservation when the pressure is regulated, and the pressure regulating valve is applied to pressure regulating valves with different capacities and can also maintain the function of precise pressure regulation.
Drawings
FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention showing a structure of a rapid exhaust shut-off device.
FIG. 2 is an enlarged partial view of the cross-section (A) of the structure of FIG. 1 according to the preferred embodiment of the present invention.
FIG. 3 is an enlarged partial view of the cross-section (B) of the structure of FIG. 1 according to the preferred embodiment of the present invention.
FIG. 4 is a schematic diagram of a preferred embodiment of the present invention.
FIG. 5 is a cross-sectional view illustrating the quick exhaust opening according to the preferred embodiment of the present invention.
Fig. 6 is an enlarged partial view (a1) of the cross-section of the structure of fig. 5 according to the preferred embodiment of the present invention.
Fig. 7 is an enlarged partial view of the cross-section of the structure shown in fig. 5 (B1), according to the preferred embodiment of the present invention.
Fig. 8 is a schematic diagram of the straight bar wrapping of the pressure regulating straight bar according to the preferred embodiment of the invention.
Fig. 9 is a schematic diagram of the encapsulation of the main membrane in accordance with the preferred embodiment of the present invention.
FIG. 10 is a schematic cross-sectional view of another embodiment of the present invention.
The reference numbers are as follows:
10-body, 11-input end, 12-output end, 13-channel, 131-channel orifice, 14-pressure regulating channel, 15-feedback channel, 16-steel ball, 20-pressure regulating air seat, 21-overflow hole, 22-knob, 23-main spring, 30-middle valve seat, 31-balance diaphragm, 32-piston, 33-pressure regulating straight rod, 331-straight rod rubber coating, 34-main diaphragm, 341-diaphragm rubber coating, 40-base, 41-overflow pipe, 42-valve port, P-air pressure fluid, PT-balance pressure, P1-primary side pressure and P2-secondary side pressure.
Detailed Description
In general, the best possible embodiment, detailed description of which follows with reference to FIGS. 1-7, will enhance understanding of the present invention;
the invention is an energy-saving precision pressure regulating valve improved structure, have a body 10, it has an input end 11 and an output end 12 used for supplying a pressure fluid P to pass in and out, this pressure fluid P includes the equilibrium pressure, primary side pressure P1, secondary side pressure P2, its body 10 is mainly by a pressure regulating air base 20, a middle valve base 30, a base 40 is connected from top to bottom and formed, and the pressure regulating air base 20 is still equipped with a equilibrium diaphragm 31 between the middle valve base 30 and the bottom, the base and the middle valve base 30 are equipped with a main diaphragm 34 below the middle valve base, this main diaphragm 34 is wrapped up a layer of diaphragm rubber coating 341;
the middle valve seat 30 is further provided with a channel 13, a pressure regulating channel 14, a feedback channel 15 and a pressure regulating straight rod 33, which are communicated with each other and can guide the air pressure fluid P, the pressure regulating straight rod 33 is wrapped by a straight rod wrapping rubber 331, wherein the channel 13 is arranged from the input end 11 of the base 40 to the pressure regulating straight rod 33, the channel 13 is further provided with a channel orifice 131, when the air pressure fluid P enters from the input end 11, a primary side pressure P1 is formed to pass through the channel 13 to the pressure regulating straight rod 33, and the redundant primary side pressure P1 can be reduced by matching with the channel orifice 131, the pressure regulating air seat 20 is matched with the knob 22 to regulate the pressure, so as to drive the main spring 23 to push the balance diaphragm 31 and the pressure regulating straight rod 33 downwards, and the pressure regulating straight rod 33 is used for enabling the primary side pressure P1 to flow to the main diaphragm 34, so as to form;
the feedback channel 15 is disposed in the middle valve seat 30 and adjacent to one side of the channel 13, when the balanced pressure PT is guided to the main diaphragm 34, the balanced pressure PT pushes the main diaphragm 34 to be linked with the overflow pipe 41 downward, so that the valve port 42 disposed in the overflow pipe 41 is opened together, and the primary pressure existing at the input end 11 flows to the valve port 42 to the output end 12, and a secondary pressure P2 is formed;
the pressure regulating channel 14 is connected to the position of the balance diaphragm 31 through the output end 12 of the base 40, and the secondary pressure P2 has partial pressure moving to the balance diaphragm 31 through the pressure regulating channel 14, when the secondary pressure P2< the balance pressure PT, the partial balance pressure PT in the primary diaphragm 34 will push the steel ball 16 through the feedback channel orifice 151 and the feedback channel 15, and then enter the secondary pressure P2, so that the secondary pressure P2 of the pressure regulating channel 14 is balanced;
referring to fig. 6 again, the end of the feedback channel 15 above the secondary pressure P2 is designed as a circular hole, and the end of the balance pressure PT below the steel ball 16 is designed as a conical hole, when the secondary pressure P2> the balance pressure PT, the secondary pressure P2 pushes the steel ball 16 to abut against the conical hole, only a very small portion of the secondary pressure P2 flows into the balance pressure PT, is discharged to the overflow hole 21 of the pressure regulating air seat 20 through the central hole of the piston 32, and is then discharged to the outside of the main body 10, most of the secondary pressure P2 pushes away the main diaphragm 34, and the excess pressure directly passes through the overflow pipe 41 and is discharged from the main body 10 through the base 40, and the pressure reduction inside the main body 10 can be rapidly achieved, so the balance pressure PT can be kept larger than the secondary pressure P2, and the pressure of the main body 10 is rapidly; when the circular area between the steel ball 16 and the feedback channel 15 is minimized, the flow rate of the pneumatic fluid P can be minimized, and when the pressure end of the secondary side of the feedback channel 15 faces downward, the secondary side pressure P2 can still push the steel ball 16 to prop against the conical hole of the end of the balance pressure PT, so as to achieve the same effect; the whole process is that the pressure fluid P can be balanced as the pressure fluid P flows among all the channels, so that the pressure regulation of the body 10 can keep certain high-precision output pressure;
when the set pressure of the body 10 is completed, the increase or decrease in the equilibrium pressure PT affects the axial movement of the main diaphragm 34, and the secondary pressure P2 has a dynamic response of rapid pressure increase in a very short time, as described in paragraph 0014: the pneumatic fluid P flows among all the channels to obtain balance, and the transient boosting dynamic response is rapidly stabilized; the secondary pressure P2 will generate a dynamic response of rapid pressure increase in a very short time when the output end 12 opens and stops the output pressure, which is similar to the situation of performing the set pressure, but is limited by the fact that the response after the parts are assembled cannot be completely the same every time, so the secondary pressure P2 and the set pressure will keep a tiny error range, which is the repetitive pressure accuracy of the main body 10, and after the repeated implementation and test of the inventor, the error range is within the maximum set pressure ± 0.5%, and the same predetermined efficacy can be maintained when the pressure regulator is applied to a large-capacity pressure regulating valve.
When the pressure of the body 10 is reduced, the knob 22 is rotated to reduce the compression amount of the main spring 23, so that after the force of the main spring 23 is reduced, the balance diaphragm 31 is pushed by the secondary side pressure P2 and the balance pressure PT to open the central hole of the piston 32, the balance pressure PT is discharged from the central hole to the overflow hole 21 of the pressure regulating air seat 20 and then discharged to the outside of the body 10, and rapid exhaust and pressure reduction are achieved; at this time, the pressure-regulating straight rod 33 is pushed by the bottom spring to close the valve port, and also close the passage 13, and the primary diaphragm 34 is affected by the reduction of the equilibrium pressure PT and returns to the original position, at this time, the valve port 41 is in a closed state, as shown in fig. 5, when the secondary pressure P2 is larger than the area of the primary diaphragm 34 by the area of the equilibrium pressure PT, the secondary pressure P2 can push the primary diaphragm 34 open, and is directly and rapidly discharged from the base 40 through the overflow pipe 41 out of the body 10, and as in the aforementioned 0014 section, a very small part of the secondary pressure P2 will enter the equilibrium pressure PT through the pressure-regulating passage 14, the feedback passage 15 and the steel balls 16, and will flow through the central hole of the piston 32 in the middle of the equilibrium diaphragm 31 to the overflow hole 21 of the pressure-regulating air seat 20 and be discharged out of the body 10, so that the body 10 can exhaust from two places, and reduce the equilibrium pressure PT and the secondary pressure, the efficiency is more rapid, and the same preset efficacy can be maintained when the pressure regulator is applied to a high-capacity pressure regulating valve.
Referring to fig. 8, it is shown that a schematic diagram of the pressure regulating straight rod 33 is shown, it can be seen that the straight rod rubber coating 331 coated on the outer layer of the pressure regulating straight rod 33, the straight rod rubber coating 331 on the left side a is thicker, the straight rod rubber coating 331 on the right side is thinner, the thickness of the straight rod rubber coating is increased or decreased during design mainly according to conditions such as the capacity of the pressure regulating valve and the accuracy of the output pressure of …, the thickness of the straight rod rubber coating mainly affects the extrusion amount of the piston 32 in the middle of the balance diaphragm 31 and the straight rod rubber coating 331, the thinner the extrusion amount is, the easier the central hole of the piston 10 is opened, so that the exhaust of the balance pressure PT is accelerated, the hysteresis phenomenon when the balance pressure PT is reduced, the hysteresis phenomenon is also minimized when the volume occupied by the balance pressure PT is minimized, the pressure reduction and pressure increase of the balance pressure PT are both rapidly achieved, so that the pressure regulation of the body 10, the same predetermined efficacy can be maintained.
Referring to fig. 9, the thickness of the membrane encapsulation 341 formed on the surface of the main membrane 34 affects the extrusion amount of the overflow pipe 41, the left side c of the membrane encapsulation 341 in the figure is thinner, and the right side d is thicker, however, the thinner the membrane encapsulation 341 is, the lower the extrusion amount is, the faster the exhaust of the secondary side pressure P2 is made, and the hysteresis phenomenon when the secondary side pressure P2 is reduced, so that the pressure regulation of the main body 10 can maintain a certain high precision output pressure, and the same predetermined efficacy can be maintained when applied to a large-capacity pressure regulating valve; so far, it is known that the integral structure is used for carrying out the speed of air exhaust of the pneumatic fluid P, the straight-bar encapsulation 331 and the membrane encapsulation 341 have considerable influence, and the inventor repeatedly carries out the implementation and the test to obtain the membrane encapsulation 341, the optimal thickness in the structure of the invention is between 0.1 and 0.15mm, while the thickness of the straight-bar encapsulation 331 is between 0.1 and 0.15mm, and the parts of the straight-bar encapsulation 331 can be increased or decreased according to the actual production requirements, and the invention is not limited to the above; during production, the surfaces of the piston 32 and the overflow pipe 41 are not required to be polished to be smooth surfaces, the exhaust sensitivity of the slightly unsmooth surfaces is better than that of the smooth surfaces, the processing and the manufacturing are convenient, the leakage can be prevented, and the effect of circulation of the air pressure fluid P is improved.
Referring to fig. 10, another embodiment of the present invention is similar to the previous embodiments in structure and operation principle, and the difference is that the main diaphragm 34 is replaced with a design having a central through hole, and the overflow pipe 41 is used to perforate the side near the input end 11, and after the secondary pressure P2 is flowed to the bottom of the overflow pipe 41, when the pressure is reduced, the pressure is discharged, and enters the balance pressure PT through the central hole of the main diaphragm 34, and then is directly discharged through the overflow hole 21 by matching the balance pressure PT, so that the present invention is suitable for use in pressure regulating valves with small flow rate, the discharge time is not too long, and the discharge noise can be effectively reduced.
In summary, the improved structure of the energy-saving precision pressure regulating valve of the present invention has the feedback channel 15 inside the structure to match with the pressure regulating channel 14 and the channel 13, so that the three are in a balanced state, and when the pressure is regulated, the improved structure not only has the effects of no overflow and energy saving, but also can achieve the purposes of rapid pressurization, pressure reduction and high precision output pressure maintenance, and can be applied to pressure regulating valves with different capacities to maintain the function of precision pressure regulation.
Claims (7)
1. An improved structure of an energy-saving precision pressure regulating valve comprises: a body, which has an input end and an output end for the inlet and outlet of air pressure fluid, and the body is mainly composed of a pressure regulating air seat, a middle valve seat and a base, a balance diaphragm is arranged between the pressure regulating air seat and the middle valve seat, a main diaphragm is arranged between the base and the middle valve seat, the main diaphragm is coated with a diaphragm rubber coating, a channel, a pressure regulating channel and a feedback channel which can guide air pressure fluid and are communicated with each other are arranged in the middle valve seat, and a pressure regulating straight rod is arranged in the feedback channel, a feedback channel orifice and steel balls are arranged in the feedback channel, the pressure regulating straight rod is coated with a straight rod rubber coating, and the base is provided with an overflow pipe, a valve port and a channel orifice communicated with the channel; the method is characterized in that: the air pressure fluid flows to the feedback channel in a one-way mode through the channel, the flow of the air pressure fluid is directly adjusted through the throttling hole of the feedback channel and the steel ball, the air pressure fluid between the feedback channel and the pressure regulating channel is balanced, the channel, the feedback channel and the pressure regulating channel are connected and communicated, the film encapsulation and the straight rod encapsulation are matched with each other to be of proper thickness, and the overflow pipe and the overflow hole of the pressure regulating air seat can be selectively subjected to rapid pressurization, depressurization and high-precision output pressure.
2. The improved structure of an energy-saving type precision pressure regulating valve as claimed in claim 1, wherein the thickness of the membrane encapsulation is adjusted from 0.1 to 0.15mm, and the thinner the thickness is, the faster the air discharge of the air pressure fluid from the balance membrane can be.
3. The improved structure of an energy-saving type precision pressure regulating valve as claimed in claim 1, wherein the thickness of the straight rod rubber coating is adjusted from 0.1 to 0.15mm, and the thinner the thickness of the straight rod rubber coating, the faster the air discharge of the air pressure fluid from the overflow pipe is.
4. The improved structure of an energy-saving type precision pressure regulating valve as claimed in claim 1, wherein the balance diaphragm further comprises: and the piston is arranged in the center of the balance diaphragm and can be used for abutting against the pressure regulating straight rod with the surface being a non-smooth surface, so that the pressure regulating straight rod can exhaust more smoothly.
5. The improved structure of an energy-saving type precision pressure regulating valve as claimed in claim 1, wherein the feedback channel is configured with a round hole at the top and a conical hole at the bottom, when the secondary pressure is greater than the equilibrium pressure, the secondary pressure pushes the steel ball against the conical hole, a very small portion of the secondary pressure is circulated to the equilibrium pressure and discharged out of the body through the piston, and most of the secondary pressure pushes away the main diaphragm and is discharged out of the base through the overflow pipe, thereby rapidly realizing the internal pressure reduction of the body.
6. The improved structure of an energy-saving type pressure regulating valve as claimed in claim 5, wherein when the steel ball is engaged with the feedback channel and abutted against each other, a circular ring is formed to limit the flow rate of the pneumatic fluid to a minimum, thereby ensuring the steel ball to maintain the adjustment of vertical displacement.
7. The improved structure of an energy-saving type precision pressure regulating valve as claimed in claim 1, wherein the top end of the overflow pipe is pressed against the surface of the main diaphragm to form a non-smooth surface, and the overflow pipe is matched with the main diaphragm to smoothly exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026197.XA CN108302232B (en) | 2017-01-13 | 2017-01-13 | Improved structure of energy-saving precision pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026197.XA CN108302232B (en) | 2017-01-13 | 2017-01-13 | Improved structure of energy-saving precision pressure regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108302232A CN108302232A (en) | 2018-07-20 |
| CN108302232B true CN108302232B (en) | 2020-01-21 |
Family
ID=62872368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710026197.XA Active CN108302232B (en) | 2017-01-13 | 2017-01-13 | Improved structure of energy-saving precision pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302232B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140667B (en) * | 2018-11-05 | 2024-05-24 | 上海气立可气动设备有限公司 | Two-section type air inlet and two-section type air exhaust structure of electric control proportional valve |
| CN112326438B (en) * | 2020-09-16 | 2022-03-25 | 北京北机机电工业有限责任公司 | High-efficient testing arrangement of diaphragm material pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261468A1 (en) * | 1974-02-18 | 1975-09-12 | Huba Control Ag | Hydraulic or pneumatic servo-controlled valve - uses permanent magnet and soft iron yoke to open pilot valve |
| CN101603599A (en) * | 2008-06-10 | 2009-12-16 | 藤仓橡胶工业株式会社 | Reduction valve |
| RU2406903C1 (en) * | 2009-09-17 | 2010-12-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Reducing valve |
| CN201748004U (en) * | 2010-05-13 | 2011-02-16 | 高新区益腾净水设备研发中心 | Pressure reducing valve |
| DE102012221047A1 (en) * | 2012-11-19 | 2014-05-22 | Hansgrohe Se | Valve head for a sanitary fitting |
| CN204900968U (en) * | 2015-08-20 | 2015-12-23 | 宁波市华益气动工程有限公司 | Improve accurate relief pressure valve of case structure |
| CN206503981U (en) * | 2017-01-13 | 2017-09-19 | 上海气立可气动设备有限公司 | Energy-saving precision pressure regulator valve structure-improved |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218458A (en) * | 2005-07-12 | 2008-07-09 | 株式会社伊奈 | Pilot type water discharging/stopping and flow regulating valve device |
| US8485221B2 (en) * | 2007-09-19 | 2013-07-16 | Zurn Industries, Llc | Flush valve handle and check valve assembly |
-
2017
- 2017-01-13 CN CN201710026197.XA patent/CN108302232B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261468A1 (en) * | 1974-02-18 | 1975-09-12 | Huba Control Ag | Hydraulic or pneumatic servo-controlled valve - uses permanent magnet and soft iron yoke to open pilot valve |
| CN101603599A (en) * | 2008-06-10 | 2009-12-16 | 藤仓橡胶工业株式会社 | Reduction valve |
| RU2406903C1 (en) * | 2009-09-17 | 2010-12-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Reducing valve |
| CN201748004U (en) * | 2010-05-13 | 2011-02-16 | 高新区益腾净水设备研发中心 | Pressure reducing valve |
| DE102012221047A1 (en) * | 2012-11-19 | 2014-05-22 | Hansgrohe Se | Valve head for a sanitary fitting |
| CN204900968U (en) * | 2015-08-20 | 2015-12-23 | 宁波市华益气动工程有限公司 | Improve accurate relief pressure valve of case structure |
| CN206503981U (en) * | 2017-01-13 | 2017-09-19 | 上海气立可气动设备有限公司 | Energy-saving precision pressure regulator valve structure-improved |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108302232A (en) | 2018-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108302232B (en) | Improved structure of energy-saving precision pressure regulating valve | |
| CN102287412B (en) | Ultra-high pressure proportional relief valve | |
| CN201363330Y (en) | Plate-type one-way speed-regulating valve | |
| CN105952953A (en) | Response time-adjustable pilot electromagnetic valve structure | |
| CN202301250U (en) | Ultrahigh pressure proportional relief valve | |
| CN207961658U (en) | Vacuum energy-saving type large capacity precise pressure regulating valve | |
| CN210830634U (en) | Low-temperature precise pressure regulating valve | |
| US10352464B2 (en) | Structure of energy-saving precision pressure adjusting valve | |
| CN206503981U (en) | Energy-saving precision pressure regulator valve structure-improved | |
| TWI613384B (en) | Energy-saving precision pressure regulating valve improved structure | |
| CN109611399B (en) | Throttle valve and pressure relief system | |
| CN207715840U (en) | A kind of pressure reduction structure with flow controller | |
| TW201802384A (en) | Energy-saving type precise vacuum pressure regulating valve having an effect of saving energy from a vacuum source | |
| CN207715860U (en) | A kind of pressure reduction structure with check-valves | |
| TWI576526B (en) | Energy - saving large - capacity fine regulating valve | |
| CN205806562U (en) | Energy-saving Large Copacity precise pressure regulating valve | |
| TWM528392U (en) | Energy saving type large capacity precision pressure regulating valve | |
| CN109990108B (en) | Multi-specification valve core combined type accurate flow regulating valve | |
| TWM568310U (en) | Energy-saving large-capacity direct-acting precision pressure regulating filter valve | |
| CN107300023B (en) | Energy-saving large capacity precise pressure regulating valve | |
| CN221054374U (en) | Multistage pressure reducing regulating valve | |
| CN212804241U (en) | Integrally-processed multi-channel valve body | |
| TWM556807U (en) | Structure improvement of energy-saving large-capacity precise pressure regulating valve | |
| TW202006281A (en) | Filter-included energy-saving large-capacity direct-acting precision pressure regulation valve capable of achieving the purpose of precise regulation of pressure | |
| CN105114675B (en) | A kind of adjustable constant pressure difference valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |