CN218118798U - Current servo pneumatic gas proportional valve - Google Patents
Current servo pneumatic gas proportional valve Download PDFInfo
- Publication number
- CN218118798U CN218118798U CN202222142796.7U CN202222142796U CN218118798U CN 218118798 U CN218118798 U CN 218118798U CN 202222142796 U CN202222142796 U CN 202222142796U CN 218118798 U CN218118798 U CN 218118798U
- Authority
- CN
- China
- Prior art keywords
- pneumatic
- valve
- cavity
- proportional
- seat
- 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
Abstract
A current servo pneumatic type gas proportional valve comprises a valve main body, a control cavity cover, a valve cover, a bottom cover, a first electromagnetic valve component, a second electromagnetic valve component, a pneumatic valve core component, a proportional electromagnetic valve component and a proportional pneumatic control component, wherein a first valve core of the first electromagnetic valve component is matched with a first valve seat; the proportional pneumatic control assembly is arranged in the pneumatic proportional control cavity, the second electromagnetic valve assembly is arranged on the control cavity cover, the second valve core is matched with the second valve seat, the proportional electromagnetic valve assembly is arranged on the control cover, and the proportional valve core is matched with the proportional pneumatic control assembly to control the air output; the circular ring seat is inserted with the interface of the proportional valve seat, and the pneumatic valve core is matched with the proportional valve seat; the base plate covers the opening of the air inlet cavity, the annular bulge extends into the air outlet cavity, the elastic piece is fixed by the bottom cover, and the pneumatic air guide hole, the air guide hole and the pneumatic air guide groove are communicated. The first electromagnetic valve component and the second electromagnetic valve component are adopted to control on-off, so that the safety performance is improved, and the proportional electromagnetic valve component controls the proportional pneumatic control component to realize stable gas supply.
Description
Technical Field
The utility model relates to a gas valve field especially relates to a gas proportional valve.
Background
At present, prior art, chinese patent 202020473844.9, a gas proportional valve, including the proportional valve, the proportional valve includes the housing, even has big fire adjusting device in the housing, and it has the valve rod to limit in the big fire adjusting device, be equipped with two reed framves in the housing, all be fixed with the reed on two reed framves, be fixed with coil assembly one between two reeds, be equipped with the permanent magnet subassembly that the cover was established outside coil assembly one between two reed framves, a passageway has been seted up on reed frame, reed and the coil assembly one, and the valve rod passes this passageway and with coil assembly one rigid coupling. There are problems in that: the gas on-off and pneumatic air guide channel are controlled by one electromagnetic valve core assembly, so that potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the current servo pneumatic gas proportional valve has the characteristics that two stop valves are connected in series, and the potential safety hazard is eliminated by pneumatic independent control.
The utility model discloses a realize like this: a current servo pneumatic gas proportional valve is characterized in that: it comprises a valve main body, a control cavity cover, a valve cover, a bottom cover, a first electromagnetic valve component, a second electromagnetic valve component, a pneumatic valve core component, a proportional electromagnetic valve component and a proportional pneumatic control component,
the valve main body comprises an air inlet interface, an air inlet cavity, a first valve seat arranged in the air inlet cavity, an air guide cavity, an air outlet cavity arranged below the air guide cavity, a proportional valve seat, a second valve cavity, a second valve seat arranged in the second valve cavity, a pneumatic control cavity, a pneumatic air guide hole and a pressure relief hole, wherein the pressure relief hole is communicated with the air outlet cavity and the pneumatic control cavity, and the second valve seat is communicated with the air guide cavity; the second valve cavity and the pneumatic control cavity form a pneumatic proportional control cavity;
the bottom cover comprises a pneumatic air guide groove and a circular cavity with an upper opening,
the pneumatic valve core assembly comprises an elastic part, a tray, a pneumatic valve rod, a pressure spring, a valve rod seat and a pneumatic valve core, wherein the elastic part comprises a base plate, an air guide hole formed in the base plate, a tray cavity and a hollow annular bulge surrounding the tray cavity and provided with a lower opening;
the valve cover covers the air inlet cavity and the upper opening of the air guide cavity, the first electromagnetic valve component is arranged on the valve cover, and a first valve core of the first electromagnetic valve component is matched with the first valve seat; the proportional pneumatic control assembly is arranged in the pneumatic proportional control cavity, the control cavity cover is buckled with the pneumatic proportional control cavity and fixes the proportional pneumatic control assembly, the second electromagnetic valve assembly is arranged on the control cavity cover, the second valve core is matched with the second valve seat, the proportional electromagnetic valve assembly is arranged on the control cover, and the proportional valve core is matched with the proportional pneumatic control assembly to control the air output; the circular ring seat is inserted with the interface of the proportional valve seat, and the pneumatic valve core is matched with the proportional valve seat; the base plate covers the lower opening of the air inlet cavity, the annular protrusion extends into the air outlet cavity, the elastic piece is fixed by the bottom cover, and the pneumatic air guide hole, the air guide hole and the pneumatic air guide groove are communicated.
The current servo pneumatic gas proportional valve is characterized in that: the proportional pneumatic control assembly comprises an upper control piece made of rubber material, a control seat and a bottom sealing piece,
the upper control piece comprises a plate body, a sealing hole arranged at one end of the plate body, an annular seat arranged at the other end of the plate body and a control cavity film with a lower opening arranged on the annular seat, wherein the control cavity film comprises a plane fixing part and an annular cavity part with a lower opening;
the control seat comprises a base plate, an air guide seat arranged at one end of the base plate, a pressure release cavity arranged at the other end of the base plate, a proportional control seat arranged at the center of the pressure release cavity, a pressure release air guide hole, a pneumatic air guide groove and a pressure release air guide groove which are arranged on the lower surface of the base plate, and a pressure release exhaust groove arranged on the upper surface of the base plate, wherein the pneumatic air guide groove comprises a linear part and an arc-shaped part, and is communicated with the air guide seat;
the bottom sealing element comprises an air hole, a circular plate body, and a proportion control air guide hole, a pneumatic air guide hole and a pressure relief air hole which are arranged on the circular plate body;
the bottom plate of the pneumatic proportional control cavity is provided with a gas guide seat with a groove, a pneumatic gas groove 1 and a pressure relief gas groove, and the gas guide seat with the groove is communicated with the pneumatic gas groove; the pneumatic air guide hole and the pressure relief hole are respectively communicated with the pneumatic air groove and the pressure relief air groove;
the upper control piece, the control seat and the bottom sealing piece are sequentially superposed, the proportional control seat, the proportional control air guide hole and the air guide seat correspond to each other, the sealing hole, the air guide seat, the air hole and the second valve core seat correspond to each other, and the pneumatic air guide groove and the pressure relief air guide groove correspond to the pneumatic air groove and the pressure relief air groove respectively; the proportional valve core of the proportional solenoid valve component is fixed with the plane fixing part of the control cavity film and matched with the proportional control seat, and the valve rod of the second solenoid valve component is in sliding fit with the sealing hole, the air guide seat and the air hole.
The current servo pneumatic gas proportional valve is characterized in that: also comprises a second valve seat shell which comprises a shell part with an upper opening, a second valve core seat arranged on the bottom plate and a flange,
the shell part penetrates through the air hole and the flange of the bottom sealing piece to be attached to the bottom sealing piece, and the shell part extends into the second valve seat.
The current servo pneumatic gas proportional valve is characterized in that: the tray is provided with a positioning hole, the tray cavity of the elastic piece is provided with a positioning pin, and the positioning pin is inserted into the positioning hole.
The current servo pneumatic gas proportional valve is characterized in that: and a filter screen is arranged at the position of the air inlet cavity, which is adjacent to the air inlet interface.
The utility model relates to a servo pneumatic type gas proportional valve of electric current adopts first, second solenoid valve subassembly control break-make, has improved the security performance, and proportion solenoid valve subassembly control proportion pneumatic control subassembly realizes stabilizing the air feed.
Drawings
Fig. 1 is one of the exploded perspective views of the present invention.
Fig. 2 is a second exploded perspective view of the present invention.
Fig. 3 is a third exploded perspective view of the present invention.
Fig. 4 is a fourth exploded perspective view of the present invention.
Fig. 5 is a plan view of the valve main body 1 of the present invention.
Fig. 6 is a view a-a of fig. 5.
Fig. 7 is one of the cross-sectional views of the present invention.
Fig. 8 is a second cross-sectional view of the present invention.
Fig. 9 is a view B-B of fig. 8.
Fig. 10 is a view C-C of fig. 8.
Fig. 11 is a perspective sectional view of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in figure 1, the current servo pneumatic gas proportional valve comprises a valve main body 1, a control cavity cover 2, a valve cover 3, a bottom cover 4, a first electromagnetic valve component 5, a second electromagnetic valve component 6, a pneumatic valve core component 7, a proportional electromagnetic valve component 8 and a proportional pneumatic control component 9,
the valve main body 1 comprises an air inlet interface 11, an air inlet cavity 12, a first valve seat 13 arranged in the air inlet cavity 12, an air guide cavity 14, an air outlet cavity 15 arranged below the air guide cavity 14, a proportional valve seat 16, a second valve cavity 17, a second valve seat 171 arranged in the second valve cavity 17, a pneumatic control cavity 18, a pneumatic air guide hole 191 and a pressure relief hole 192,
as shown in fig. 6, the relief hole 192 communicates with the air outlet chamber 15 and the pneumatic control chamber 18, and as shown in fig. 6 and 8, the second valve seat 171 communicates with the air guide chamber 14; the second valve cavity 17 and the pneumatic control cavity 18 form a pneumatic proportional control cavity; the lower end of the first valve seat 13 is communicated with the air guide cavity 14;
as shown in fig. 2 and 6, the air outlet end or lower end of the pneumatic air guide hole 191 is flared;
the bottom cover 4 comprises a pneumatic air guide groove 41 and a circular cavity 42 with an upper opening, the pneumatic air guide groove 41 is communicated with the circular cavity 42,
the pneumatic valve core assembly 7 comprises an elastic member 71, a tray 72, a pneumatic valve rod 73, a pressure spring 74, a valve rod seat 75 and a pneumatic valve core 76, wherein the elastic member 71 comprises a substrate (not identified), an air guide hole 711 arranged on the substrate, a tray cavity 712, and an annular protrusion 713 surrounding a hollow lower opening of the tray cavity, the valve rod seat 75 comprises an annular seat 751, a valve rod guide sleeve 752 and a bracket 753 connecting the annular seat 751 and the valve rod guide sleeve 752; the tray 72 is arranged in the tray cavity 712, the pneumatic valve rod 73 passes through a pressure spring 74, a valve rod guide sleeve 752 and a circular ring seat to be connected with the pneumatic valve core 76, the pressure spring 74 is respectively matched with a spring seat and a bracket 753 at the lower end of the pneumatic valve rod 73, and the lower end of the pneumatic valve rod 73 is in supporting fit with the tray 72;
the valve cover 3 covers the openings of the air inlet cavity 12 and the air guide cavity 14, the first electromagnetic valve component 5 is arranged on the valve cover 3, and the first valve core of the first electromagnetic valve component is matched with the first valve seat 13, as shown in fig. 8; the proportional pneumatic control assembly 9 is arranged in the pneumatic proportional control cavity, the control cavity cover 2 is buckled with the pneumatic proportional control cavity to fix the proportional pneumatic control assembly 9, the second electromagnetic valve assembly 6 is arranged on the control cavity cover 2, the second valve core is matched with the second valve seat 171, the proportional electromagnetic valve assembly 8 is arranged on the control cover, and the proportional valve core is matched with the proportional pneumatic control assembly 9 to control the air output; the circular ring seat 751 is inserted into the interface of the proportional valve seat 16, and the pneumatic valve core 76 is matched with the proportional valve seat 16; the base plate covers the lower opening of the air inlet cavity 12, the annular bulge extends into the air outlet cavity 15, the elastic part 71 is fixed by the bottom cover 4, the circular cavity 42 is opposite to and communicated with the annular bulge 713, and the pneumatic air guide hole 191, the air guide hole 711, the pneumatic air guide groove 41 and the circular cavity 42 are sequentially communicated; the circular cavity 42 and the annular projection 713 form a pneumatic drive cavity;
as shown in fig. 3 and 4, the proportional pneumatic control assembly 9 comprises an upper control member 91 made of rubber material, a control seat 92 and a bottom sealing member 93 made of rubber material,
the upper control piece 91 comprises a plate body, a sealing hole 911 arranged at one end of the plate body, an annular seat 912 arranged at the other end of the plate body and a control cavity film 913 with a lower opening arranged on the annular seat, wherein the control cavity film 913 comprises a plane fixing part and an annular cavity part with a lower opening;
the control seat 92 comprises a base plate, an air guide seat 921 arranged at one end of the base plate, a pressure relief cavity 922 arranged at the other end of the base plate, a proportional control seat 923 arranged at the center of the pressure relief cavity, a pressure relief air guide hole 92A, a pneumatic air guide groove 924 and a pressure relief air guide groove 925 arranged on the lower surface of the base plate, and a pressure relief air exhaust groove 926 arranged on the upper surface of the base plate, wherein the pneumatic air guide groove 924 comprises a linear part and an arc-shaped part, and the pneumatic air guide groove 924 is communicated with the air guide seat 921; the pressure relief air guide hole 92A is communicated with the pressure relief air guide groove 925; the pressure relief and exhaust groove 926 is communicated with the pressure relief and air guide groove 925;
the bottom sealing member 93 comprises air holes, a circular plate body, and a proportion control air hole 931, a pneumatic air hole 932 and a pressure relief air hole 933 which are arranged on the circular plate body;
a bottom plate of the pneumatic proportional control cavity is provided with a grooved air guide seat 193, a pneumatic air groove 194 and a pressure relief air groove 195, and the grooved air guide seat 193 is communicated with the pneumatic air groove 194; the pneumatic air guide hole 191 and the pressure relief hole 192 are respectively communicated with the pneumatic air groove 194 and the pressure relief air groove 195;
the upper control piece 91, the control seat 92 and the bottom sealing piece 93 are sequentially overlapped, the proportional control seat 923, the proportional control air vent 931 and the air guide seat 193 with a groove correspond to each other, the sealing hole 911, the air guide seat 921, the air vent and the second valve core seat 171 correspond to each other, the pneumatic air guide groove 924, the pneumatic air guide hole 932 and the pneumatic air groove 194 correspond to each other, and the pressure relief air guide groove 925, the pressure relief air vent 933 and the pressure relief air groove 195 correspond to each other; the proportional valve core of the proportional solenoid valve assembly 8 is fixed with the plane fixing part of the control cavity film 913 and is matched with the proportional control seat 923, and the valve rod of the second solenoid valve assembly 6 is in sliding fit with the sealing hole 911, the air guide seat 921 and the air hole of the bottom sealing element 93.
As a further improvement of the utility model: and a second valve seat housing 10, the second valve seat housing 10 includes a housing part 101 with an upper opening, a second valve core seat 102 provided on the bottom plate, and a flange 103,
the housing 101 is attached to the bottom seal 93 through the air hole of the bottom seal 93 and the flange 103, and the housing 101 extends into the second valve seat 171.
The tray 72 is provided with a positioning hole 721, the tray cavity 712 of the elastic member 71 is provided with a positioning pin 7121, and the positioning pin 7121 is inserted into the positioning hole 721.
As a further improvement of the utility model: a filter screen 121 is arranged at the position of the air inlet cavity 12 adjacent to the air inlet interface 11.
When the gas-fired boiler is used, the first electromagnetic valve component 5, the second electromagnetic valve component 6 and the proportional electromagnetic valve component 8 are respectively electrified, the first valve core of the first electromagnetic valve component 5 leaves the first valve seat 13, and gas enters the gas inlet cavity 12 from the gas inlet interface 11 and the filter screen 121 and enters the gas guide cavity 14 through the first valve seat 13;
meanwhile, the second valve core of the second solenoid valve assembly 6 leaves the second valve seat 171, the gas in the gas guide cavity 14 enters the second valve seat 171, the gas enters the circular cavity 42 through the gas guide seat 921, the pneumatic gas guide groove 924, the pneumatic gas guide hole 932, the pneumatic gas groove 194, the pneumatic gas guide hole 191, the gas guide hole 711 and the pneumatic gas guide groove 41, the gas pressure acts on the tray cavity 712, and the pneumatic valve rod 73 and the pneumatic valve core 76 move upward, as shown in fig. 7, 9 and 11; the pneumatic valve core 76 leaves the proportional valve seat 16, and the gas enters the gas outlet cavity 15 through the gas guide cavity 14 and the proportional valve seat 16 and is supplied to the gas appliance for combustion through the gas outlet interface;
in a natural state, under the action of the spring 82, the proportional valve core 81 of the proportional solenoid valve assembly 8 is attached to the proportional control seat 923; the proportional solenoid valve assembly 8 maintains the pressure of the gas entering the pneumatic gas groove 194 and between the circular cavity 42 and the annular protrusion 713;
when the set pressure is exceeded, the gas enters the proportional control seat 923 through the pneumatic air groove 194 and the air guide seat 193 with grooves to drive the proportional valve core 81 of the proportional solenoid valve assembly 8, and the gas enters the pressure relief cavity 922 through the proportional control seat 923; then the pressure relief air guide hole 92A, the pressure relief air guide groove 925 and the pressure relief air guide hole 933 enter the pressure relief air guide groove 195 on the bottom plate of the pneumatic proportional control cavity, and the pressure relief hole 192 enters the air outlet cavity 15 for pressure relief, so that the pneumatic pressure is maintained, and the air outlet is kept constant;
the first electromagnetic valve component 5, the second electromagnetic valve component 6 and the proportional electromagnetic valve component 8 are powered off at the same time, the air in the pneumatic driving cavity formed by the circular cavity 42 and the annular protrusion 713 enters the air outlet cavity 15 for pressure relief through the pneumatic air guide groove 41, the pneumatic air guide hole 191, the pneumatic air groove 194, the pneumatic air guide groove 924, the air guide seat 921, the pressure relief air exhaust groove 926, the pressure relief air guide groove 925, the pressure relief air groove 195 and the pressure relief hole 192, and the pneumatic valve core 76 is embedded with the proportional valve seat 16.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. The utility model provides a servo pneumatic type gas proportional valve of electric current which characterized in that: it comprises a valve main body, a control cavity cover, a valve cover, a bottom cover, a first electromagnetic valve component, a second electromagnetic valve component, a pneumatic valve core component, a proportional electromagnetic valve component and a proportional pneumatic control component,
the valve main body comprises an air inlet interface, an air inlet cavity, a first valve seat arranged in the air inlet cavity, an air guide cavity, an air outlet cavity arranged below the air guide cavity, a proportional valve seat, a second valve cavity, a second valve seat arranged in the second valve cavity, a pneumatic control cavity, a pneumatic air guide hole and a pressure relief hole, wherein the pressure relief hole is communicated with the air outlet cavity and the pneumatic control cavity, and the second valve seat is communicated with the air guide cavity; the second valve cavity and the pneumatic control cavity form a pneumatic proportional control cavity;
the bottom cover comprises a pneumatic air guide groove and a circular cavity with an upper opening,
the pneumatic valve core assembly comprises an elastic part, a tray, a pneumatic valve rod, a pressure spring, a valve rod seat and a pneumatic valve core, wherein the elastic part comprises a base plate, an air guide hole formed in the base plate, a tray cavity and a hollow annular bulge surrounding the tray cavity and provided with a lower opening;
the valve cover covers the air inlet cavity and the upper opening of the air guide cavity, the first electromagnetic valve component is arranged on the valve cover, and the first valve core of the first electromagnetic valve component is matched with the first valve seat; the proportional pneumatic control assembly is arranged in the pneumatic proportional control cavity, the control cavity cover is buckled with the pneumatic proportional control cavity and fixes the proportional pneumatic control assembly, the second electromagnetic valve assembly is arranged on the control cavity cover, the second valve core is matched with the second valve seat, the proportional electromagnetic valve assembly is arranged on the control cover, and the proportional valve core is matched with the proportional pneumatic control assembly to control the air output; the circular ring seat is inserted with the interface of the proportional valve seat, and the pneumatic valve core is matched with the proportional valve seat; the base plate covers the lower opening of the air inlet cavity, the annular protrusion extends into the air outlet cavity, the elastic piece is fixed by the bottom cover, and the pneumatic air guide hole, the air guide hole and the pneumatic air guide groove are communicated.
2. A current servo pneumatic gas proportional valve according to claim 1, characterized in that: the proportional pneumatic control assembly comprises an upper control piece made of rubber material, a control seat and a bottom sealing piece,
the upper control piece comprises a plate body, a sealing hole arranged at one end of the plate body, an annular seat arranged at the other end of the plate body and a control cavity film with a lower opening arranged on the annular seat, wherein the control cavity film comprises a plane fixing part and an annular cavity part with a lower opening;
the control seat comprises a base plate, an air guide seat arranged at one end of the base plate, a pressure relief cavity arranged at the other end of the base plate, a proportional control seat arranged in the center of the pressure relief cavity, a pressure relief air guide hole, a pneumatic air guide groove and a pressure relief air guide groove which are arranged on the lower surface of the base plate, and a pressure relief air exhaust groove arranged on the upper surface of the base plate, wherein the pneumatic air guide groove comprises a straight line part and an arc-shaped part and is communicated with the air guide seat;
the bottom sealing element comprises an air hole, a circular plate body, and a proportion control air guide hole, a pneumatic air guide hole and a pressure relief air guide hole which are arranged on the circular plate body;
the bottom plate of the pneumatic proportional control cavity is provided with a gas guide seat with a groove, a pneumatic gas groove 1 and a pressure relief gas groove, and the gas guide seat with the groove is communicated with the pneumatic gas groove; the pneumatic air guide hole and the pressure relief hole are respectively communicated with the pneumatic air groove and the pressure relief air groove;
the upper control piece, the control seat and the bottom sealing piece are sequentially superposed, the proportional control seat, the proportional control air guide hole and the air guide seat correspond to each other, the sealing hole, the air guide seat, the air hole and the second valve core seat correspond to each other, and the pneumatic air guide groove and the pressure relief air guide groove correspond to the pneumatic air groove and the pressure relief air groove respectively; the proportional valve core of the proportional solenoid valve component is fixed with the plane fixing part of the control cavity film and matched with the proportional control seat, and the valve rod of the second solenoid valve component is in sliding fit with the sealing hole, the air guide seat and the air hole.
3. A current servo pneumatic gas proportional valve according to claim 2, characterized in that: also comprises a second valve seat shell which comprises a shell part with an upper opening, a second valve core seat arranged on the bottom plate and a flange,
the shell part penetrates through the air hole and the flange of the bottom sealing piece to be attached to the bottom sealing piece, and the shell part extends into the second valve seat.
4. A current servo pneumatic gas proportional valve according to claim 1, characterized in that: the tray is provided with a positioning hole, the tray cavity of the elastic piece is provided with a positioning pin, and the positioning pin is inserted into the positioning hole.
5. A current servo pneumatic gas proportional valve according to claim 1, 2, 3 or 4, characterized in that: and a filter screen is arranged at the position of the air inlet cavity adjacent to the air inlet interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142796.7U CN218118798U (en) | 2022-08-12 | 2022-08-12 | Current servo pneumatic gas proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142796.7U CN218118798U (en) | 2022-08-12 | 2022-08-12 | Current servo pneumatic gas proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218118798U true CN218118798U (en) | 2022-12-23 |
Family
ID=84523980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222142796.7U Active CN218118798U (en) | 2022-08-12 | 2022-08-12 | Current servo pneumatic gas proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218118798U (en) |
-
2022
- 2022-08-12 CN CN202222142796.7U patent/CN218118798U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8186978B2 (en) | Pump with linear actuator | |
| US20100108927A1 (en) | Silent solenoid valve for fluid regulation system | |
| US5709370A (en) | Magnetically actuated valve | |
| US8050417B2 (en) | Auxiliary electromagnetic valve for a gas servo valve | |
| CN110486527A (en) | A kind of pilot-operated type moving winding gas ratio valve | |
| CN109724236B (en) | water heater | |
| JPS6314238B2 (en) | ||
| CN111288209A (en) | Gas proportional valve | |
| CN218118798U (en) | Current servo pneumatic gas proportional valve | |
| CN109973675B (en) | Gas valve and gas utensil | |
| EP1484512A2 (en) | Electro-pneumatic air pressure regulator | |
| JP2012238196A (en) | Diaphragm type pressure regulator | |
| CN217207747U (en) | Electromagnetic valve and gas equipment | |
| US20030197143A1 (en) | Solenoid valve | |
| WO1990001651A1 (en) | Solenoid valve | |
| CN212203334U (en) | Gas proportional valve | |
| CN114165628A (en) | Gas oven intelligent valve and gas oven | |
| CN212155977U (en) | Motor gas proportional valve | |
| CN212480238U (en) | Integrated gas proportional valve and stove | |
| CN220706557U (en) | Double-valve combined type electric control valve | |
| CN215110842U (en) | Gas proportional valve | |
| CN206410177U (en) | A kind of automatically controlled kitchen range proportioning valve of stable flow type | |
| CN220727281U (en) | Multi-permanent magnet assembly combined control electromagnetic valve | |
| CN219588230U (en) | Novel fuel gas proportional valve and fuel gas water heater thereof | |
| JPH08178109A (en) | Solenoid-driven diaphragm valve structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |