CN215570457U - Gas proportional valve for full premix combustion - Google Patents
Gas proportional valve for full premix combustion Download PDFInfo
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- CN215570457U CN215570457U CN202121225034.2U CN202121225034U CN215570457U CN 215570457 U CN215570457 U CN 215570457U CN 202121225034 U CN202121225034 U CN 202121225034U CN 215570457 U CN215570457 U CN 215570457U
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Abstract
The utility model discloses a gas proportional valve for full premix combustion, which comprises: the valve body comprises a fuel gas inlet and a fuel gas outlet; a first chamber for receiving gas from the gas inlet; the first cut-off mechanism is used for controlling connection or disconnection; the pressure stabilizing mechanism is communicated with the first cavity and the fuel gas outlet, and is used for stabilizing and outputting fuel gas; the proportion regulating mechanism comprises a regulating gas input port and a proportion regulating component, when the regulating gas input port is cut off, a valve port of the pressure stabilizing mechanism is closed, and when the regulating gas input port is externally connected with regulating gas, the proportion regulating component drives the pressure stabilizing mechanism to be opened and controls the opening degree of the valve port of the pressure stabilizing mechanism. The safety is guaranteed through the first stopping mechanism, the combustion of the gas is guaranteed to be more stable through the pressure stabilizing mechanism, the reaction of the proportion regulation is enabled to be more sensitive through the cooperation of the pressure stabilizing mechanism and the proportion regulating mechanism, the gas pressure is controlled through the air pressure, the premixing ratio of the air and the gas is a constant value, the heat efficiency is improved, and the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The utility model relates to the technical field of gas equipment, in particular to a gas proportional valve for full-premix combustion.
Background
The gas circuit is relatively complicated in the current gas proportional valve on the market, and proportional control is not sensitive enough, and adjusts the gas of back output very unstable, leads to the burning of gas unsafe.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one of the technical problems in the prior art, and provides a gas proportional valve for full-premix combustion, which can control the gas pressure through air pressure to enable the premix ratio of air and gas to be a constant value, improve the heat efficiency and play a role in energy conservation and emission reduction.
According to an embodiment of the first aspect of the utility model, a gas proportional valve for full premix combustion is provided, which comprises:
the valve body comprises a fuel gas inlet and a fuel gas outlet;
the first chamber is arranged in the valve body and is used for receiving the fuel gas input by the fuel gas inlet;
a first shut-off mechanism for controlling communication or disconnection between the gas inlet and the first chamber;
the input end of the pressure stabilizing mechanism is communicated with the first cavity, and the output end of the pressure stabilizing mechanism is communicated with the fuel gas outlet and used for stabilizing and outputting fuel gas;
the proportion adjusting mechanism comprises an adjusting gas input port and a proportion adjusting component, wherein the adjusting gas input port is provided with a cut-off working condition and a working condition used for externally connecting adjusting gas, the adjusting gas input port is in the cut-off working condition, a valve port of the pressure stabilizing mechanism is in a closed state, the adjusting gas input port is externally connected with adjusting gas, the adjusting gas flows into the proportion adjusting component, the proportion adjusting component drives the valve port of the pressure stabilizing mechanism to be opened, and the proportion adjusting component controls the opening degree of the valve port of the pressure stabilizing mechanism according to the air pressure value of the adjusting gas.
Has the advantages that: this gas proportional valve for full premix burning guarantees the security through first stop mechanism, guarantee the burning of gas safer through steady voltage mechanism, and through steady voltage mechanism and proportion adjustment mechanism's cooperation, need not additionally to add the gas circuit structure that the gas regulation needs to use and can realize steady voltage and the effect of adjusting, make the inside gas circuit of valve body simpler, the reaction energy of proportion regulation is more sensitive, through air pressure control gas pressure, make the air and the premixing ratio of gas be the constant value, the thermal efficiency is improved, play energy saving and emission reduction's effect.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the utility model, the pressure stabilizing mechanism includes a pressure regulating disc, a second chamber and a third chamber, the third chamber is configured to receive the gas flowing out from the valve port of the pressure stabilizing mechanism and guide the gas to flow to the gas outlet, the pressure regulating disc is disposed on the valve port of the pressure stabilizing mechanism as a valve in a normally closed manner, the pressure regulating disc is provided with a pressure regulating channel, one end of the pressure regulating channel extends out of the valve port of the pressure stabilizing mechanism, the other end of the pressure regulating channel extends to the second chamber, the proportional regulating assembly further includes a front end, a rear end and a pressure relief channel, the second chamber is communicated with the front end of the proportional regulating assembly, the rear end of the proportional regulating assembly is connected with the regulated gas input port, the pressure relief channel is connected with the gas outlet, and the regulated gas input port is in a working condition, the front end of the proportional regulating component receives the fuel gas input by the second chamber and discharges the fuel gas through the pressure relief channel, the regulating gas input port is externally connected with regulating gas, the proportional regulating component controls the opening of the pressure regulating disc for opening the valve port of the pressure stabilizing mechanism, and the gas pressure value input by the rear end of the proportional regulating component influences the communication condition between the proportional regulating component and the pressure relief channel so as to directly control the fuel gas which flows out through pressure relief of the second chamber, thereby indirectly controlling the fuel gas output by the valve port.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the utility model, the proportional control assembly includes a servo insert and a servo diaphragm, the servo insert is provided with a gas passage, the upper end of the gas passage is communicated with the second chamber, the lower end of the gas passage is communicated with the pressure release channel, the servo diaphragm is arranged between the pressure release channel and the gas passage, an interval exists between the top surface of the servo diaphragm and the lower end of the gas passage, the top surface of the servo diaphragm is arranged as the front end of the proportional control assembly, the bottom surface of the servo diaphragm is arranged as the rear end of the proportional control assembly, and the relative interval between the servo diaphragm and the lower end of the gas passage is influenced by the pressure value of the control gas input port, so as to change the gas amount leaked from the second chamber to the pressure release channel.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the present invention, a portion of the second chamber is provided with a movable adjusting diaphragm, the adjusting diaphragm is fixedly connected to the pressure regulating channel, the adjusting diaphragm moves up and down along with a change in an air pressure value in the second chamber, and drives the pressure regulating channel and the pressure regulating plate to move synchronously, so as to adjust a relative interval between the pressure regulating plate and a valve port of the pressure stabilizing mechanism, so as to change an opening degree of the valve port of the pressure stabilizing mechanism.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the present invention, the pressure stabilizing mechanism further includes a first elastic component, and the first elastic component acts on the adjusting diaphragm to make the movement of the adjusting diaphragm more gradual.
The gas proportional valve for full premix combustion according to the embodiment of the first aspect of the present invention further includes a zero setting mechanism, the zero setting mechanism includes a zero setting component, a spring seat and a second elastic component, the servo diaphragm is supported on the spring seat, the spring seat is provided with air holes respectively communicating the adjusting gas input port and the servo diaphragm, the second elastic component is disposed between the spring seat and the servo diaphragm, and the zero setting component is configured to adjust an initial relative interval between the spring seat and the servo diaphragm to change an elastic potential energy possessed by the second elastic component, so as to adjust a preset gas pressure value.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the utility model, the zero adjustment assembly includes an adjustment rod, a slider, and left and right limit stops, the adjustment rod and the slider form a screw-nut mechanism, an inclined chute guide rail is arranged on the top end of the slider, the spring seat is slidably arranged on the chute guide rail, vertical slotted holes are arranged on the left and right limit stops, the spring seat is arranged in the slotted holes in a penetrating manner, the adjustment rod drives the slider to slide left and right, and the slider drives the spring seat to slide up and down.
The gas proportional valve for full premix combustion according to the embodiment of the first aspect of the present invention further includes a second cut-off mechanism, and the second cut-off mechanism is configured to control connection or disconnection between the pressure stabilizing mechanism and the first chamber.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the utility model, the gas outlet is provided with the flow regulator, the gas inlet is provided with the first pressure measuring nozzle, and the gas outlet is provided with the second pressure measuring nozzle.
According to the gas proportional valve for full premix combustion in the embodiment of the first aspect of the utility model, the flow regulator includes a driving rod, and a left baffle and a right baffle slidably disposed on the driving rod, the left baffle and the right baffle are respectively located at the left end and the right end of the gas inlet, the driving rod is provided with a first thread structure, the left baffle is provided with a second thread structure, the right baffle is provided with a third thread structure, the thread directions of the second thread structure and the third thread structure are opposite, the first thread structure is engaged with the second thread structure and the third thread structure, and the driving rod drives the left baffle and the right baffle to be relatively close to each other or relatively far away from each other synchronously.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an exploded view of a zeroing mechanism in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 2, a gas proportional valve for full premix combustion includes: the gas-operated valve comprises a valve body 10, a first stopping mechanism 21, a pressure stabilizing mechanism and a proportion adjusting mechanism, wherein the valve body 10 comprises a gas inlet 11 and a gas outlet 12, the gas inlet 11 is used for connecting gas, and the gas outlet 12 is used for outputting gas; wherein, the first chamber 13 is arranged in the valve body 10, and the first chamber 13 is used for receiving the fuel gas input by the fuel gas inlet 11; the first stopping mechanism 21 is arranged on the valve body 10, a part of the first stopping mechanism 21 extends into the first chamber 13, the first stopping mechanism 21 is used for controlling the connection or disconnection between the fuel gas inlet 11 and the first chamber 13 to ensure the safety of gas use, and the preferred first stopping mechanism 21 is a first stopping valve; the pressure stabilizing mechanism is arranged in the valve body 10, the input end of the pressure stabilizing mechanism is communicated with the first chamber 13, and the output end of the pressure stabilizing mechanism is communicated with the fuel gas outlet 12 and used for stabilizing and outputting fuel gas; the proportion regulating mechanism is arranged in the valve body 10 and comprises a regulating gas input port 44 and a proportion regulating component, the regulating gas input port 44 has two working conditions of cut-off and external regulation of gas, when the regulating gas input port 44 is in the cut-off working condition, a valve port of the pressure stabilizing mechanism is in a closed state, when the regulating gas input port 44 is externally connected with the regulating gas, the regulating gas is preferably air, the regulating gas flows into the proportion regulating component, and the proportion regulating component controls the opening degree of the valve port of the pressure stabilizing mechanism according to the pressure value of the regulating gas. This gas proportional valve for full premix burning guarantees the security through first stop mechanism 21, the combustion power of guaranteeing the gas through steady voltage mechanism is more stable, and through the cooperation of steady voltage mechanism and proportion adjustment mechanism, need not additionally to add the gas circuit structure that the gas regulation needs to be used and can realize steady voltage and the effect of adjusting, make the inside gas circuit of valve body 10 simpler, the reaction energy of proportion regulation is more sensitive, through air pressure control gas pressure, make the air and the premixing of gas than for the constant value, the thermal efficiency is improved, play energy saving and emission reduction's effect.
Preferably, the pressure stabilizing mechanism includes a pressure regulating plate 31, a second chamber 35 and a third chamber 32, a valve port of the pressure stabilizing mechanism is set as an input end of the pressure stabilizing mechanism, the gas input from the gas inlet 11 flows to the front of the valve port of the pressure stabilizing mechanism, the third chamber 32 is used for receiving the gas flowing out from the valve port of the pressure stabilizing mechanism, the pressure regulating plate 31 is set on the valve port of the pressure stabilizing mechanism as a valve normally closed, when the pressure regulating plate 31 is set on the valve port of the pressure stabilizing mechanism, the third chamber 32 and the valve port of the pressure stabilizing mechanism are in a cut-off state, when the pressure regulating plate 31 leaves from the valve port of the pressure stabilizing mechanism, the third chamber 32 is communicated with the first chamber 13 through the valve port of the pressure stabilizing mechanism, the third chamber 32 is communicated with the gas outlet 12, a pressure regulating channel 33 is provided on the pressure regulating plate 31, one end of the pressure regulating channel 33 extends to the outside of the valve port of the pressure stabilizing mechanism, the other end of the pressure regulating channel 33 extends to the second chamber 35, the proportional regulating assembly further includes a front end, a second end, a third end, a fourth end, a, A rear end and a pressure relief channel 43, in this embodiment, the front end and the rear end refer to two ports of the proportional regulating assembly, the front end is used for receiving the gas input from the pressure regulating channel 33, the rear end is used for receiving the regulated gas, different gas pressure values obtained through the two ports are converted into action signals, so that the proportional regulating assembly performs different actions, the second chamber 35 is communicated with the front end of the proportional regulating assembly, the rear end of the proportional regulating assembly is connected with the regulated gas input port 44, the pressure relief channel 43 is connected with the gas outlet 11, when the regulated gas input port 44 is in a cut-off condition, the front end of the proportional regulating assembly receives the gas input by the second chamber 35 and discharges the gas through the pressure relief channel 43, when the regulated gas input port 44 is externally connected with the regulated gas, the proportional regulating assembly controls the opening of the pressure regulating disc 31 to open the valve port of the pressure stabilizing mechanism, and the gas pressure value input by the rear end of the proportional regulating assembly affects the communication condition between the proportional regulating assembly and the pressure relief channel 43 That is, the effective diameter of the second chamber 35 communicating with the pressure release channel 43 decreases with the increase of the pressure value of the regulated gas input from the rear end of the proportional regulating assembly, so as to directly control the gas flowing out from the second chamber 35 through pressure release, thereby indirectly controlling the gas output from the valve port of the pressure stabilizing mechanism. The pressure regulating channel 33 is not affected by the pressure regulating plate 31 and is always in a communicating state, that is, the air pressure value of the second chamber 35 is equal to the air pressure value of the gas output by the valve port of the pressure stabilizing mechanism, and the air pressure value of the gas output by the valve port of the pressure stabilizing mechanism can be regulated by regulating the air pressure value of the second chamber 35 through the proportion regulating component.
Preferably, the gas-operated safety valve further comprises a second stopping mechanism 22, the second stopping mechanism 22 is preferably a second stopping valve, and the second stopping mechanism 22 is used for controlling the connection or disconnection between the pressure stabilizing mechanism and the first chamber 13 to ensure the gas-operated safety. The gas input from the gas inlet 11 flows to the valve front position of the second stopping mechanism 22 for sealing, at this time, the second stopping mechanism 22 is electrified and opened, and the gas can flow into the pressure regulating channel 33 in the middle of the pressure regulating plate 31.
Preferably, the proportion adjusting component comprises a servo insert 41 and a servo diaphragm 42, an air passage is arranged on the servo insert 41, the upper end of the air passage is communicated with the second chamber 35, the lower end of the air passage is communicated with a pressure relief passage 43, the servo diaphragm 42 is arranged between the pressure relief passage 43 and the air passage, an interval exists between the top surface of the servo diaphragm 42 and the lower end of the air passage, the top surface of the servo diaphragm 42 is arranged at the front end of the proportion adjusting component, the bottom surface of the servo diaphragm 42 is arranged at the rear end of the proportion adjusting component, the relative interval between the servo diaphragm 42 and the lower end of the air passage is influenced by the pressure value of adjusting gas input by the adjusting gas input port 44, and therefore the gas quantity leaked from the second chamber 35 to the pressure relief passage 43 is changed. When the gas in the second chamber 35 flows to the front end of the proportional regulating assembly and the regulated gas inlet 44 is in a cut-off state, the interval between the servo diaphragm 42 and the lower end of the gas passage is at a minimum value, the gas pressure in the second chamber 35 enables the pressure regulating disc 31 to leave from the valve port of the pressure stabilizing mechanism, so that the valve port of the pressure stabilizing mechanism is opened in a state of minimum flow rate, when the regulated gas input from the regulated gas inlet 44 acts on the bottom surface of the servo diaphragm 42, the servo diaphragm 42 has a tendency of being lifted up, so that the interval between the servo diaphragm 42 and the lower end of the gas passage is gradually reduced, the gas flowing to the pressure relief passage 43 is also reduced, the gas pressure in the second chamber 35 is gradually increased, the gas pressure in the second chamber 35 is increased, the opening degree of the valve port of the pressure stabilizing mechanism is gradually increased, and the gas flowing to the third chamber 32 is increased at this time.
Preferably, the second chamber 35 is partially provided with a movable adjusting diaphragm 36, the adjusting diaphragm 36 is fixedly connected with the pressure adjusting channel 33, the pressure adjusting disc 31 and the pressure adjusting channel 33 are of an integrated structure, the adjusting diaphragm 36 moves up and down along with the change of the air pressure value in the second chamber 35, the air pressure value in the second chamber 35 rises, the adjusting diaphragm 36 moves up and down and drives the pressure adjusting channel 33 and the pressure adjusting disc 31 to move synchronously, so that the relative interval between the pressure adjusting disc 31 and the valve port of the pressure stabilizing mechanism is adjusted, the opening degree of the valve port of the pressure stabilizing mechanism is changed, and pressure stabilization is realized.
Preferably, the pressure stabilizing mechanism further comprises a first elastic component 34, and the first elastic component 34 acts on the adjusting diaphragm 36 to make the movement of the adjusting diaphragm 36 smoother. Preferably, the third chamber 32 is divided into an upper third chamber and a lower third chamber, one end of the upper third chamber receives the gas flowing out from the valve port of the pressure stabilizing mechanism, the other end of the upper third chamber outputs the gas to the gas outlet 12, the upper third chamber is communicated with the lower third chamber through a chamber connecting hole, the air pressure in the lower third chamber acts on the top surface of the regulating diaphragm 36, the bottom surface of the regulating diaphragm 36 is a part of the second chamber 35, because the lower third chamber, the upper third chamber and the second chamber 35 are all communicated, the regulating diaphragm 36 can be ensured to be in a stable state in a normal state, when the air pressure in the first chamber 13 is suddenly increased, the movement speed of the regulating diaphragm 36 is reduced through the first elastic component 34 until the air pressures in the lower third chamber, the upper third chamber and the second chamber 35 are equal again, and pressure stabilization is achieved.
The specific voltage-stabilizing embodiment is as follows: when the air pressure of the first chamber 13 is suddenly higher and the air pressure of the input adjustment gas is constant, the air pressure of the third chamber 32 is increased, and specifically, the air pressures of the upper third chamber and the lower third chamber are increased; meanwhile, because the air pressure of the first chamber 13 is suddenly higher, the air pressure flowing into the pressure regulating channel 33 also rises, which will cause the interval between the servo diaphragm 42 and the lower end of the air passage to gradually increase, so that the air pressure value flowing into the pressure relief channel 43 becomes larger, and the air pressure value in the second chamber 35 becomes smaller at this time. Because the air pressure in the third chamber 32 rises at this moment, the air pressure in the second chamber 35 becomes small, the adjusting diaphragm 36 can move downwards, when the adjusting diaphragm 36 moves downwards, the adjusting disc 31 is driven to move downwards synchronously, the opening degree of the main valve becomes small at this moment, the outlet pressure can be reduced, and when the air pressure in the second chamber 35 and the elastic force of the first elastic component 34 reach balance, the pressure stabilizing process is completed. And the first elastic component 34 plays a role in slowing down the movement speed of the regulating membrane 36 in the pressure stabilizing process, so that the gas pressure output from the gas outlet 12 is ensured to be stable, and vice versa. The preferred first resilient member 34 is a spring.
Preferably, the zero setting mechanism further comprises a zero setting mechanism, the zero setting mechanism comprises a zero setting component, a spring seat 51 and a second elastic component 52, the servo diaphragm 42 is borne on the spring seat 51, the spring seat 51 is provided with air holes respectively communicated with the adjusting gas input port 44 and the servo diaphragm 42, the second elastic component 52 is arranged between the spring seat 51 and the servo diaphragm 42, and the zero setting component is used for adjusting the initial relative interval between the spring seat 51 and the servo diaphragm 42 so as to change the elastic potential energy possessed by the second elastic component 52, thereby adjusting a preset air pressure value, wherein the adjusted preset air pressure value is an air pressure value output when the valve port of the pressure stabilizing mechanism is at the minimum flow when the adjusting gas input port 44 is in a cut-off state.
Preferably, the zero-setting subassembly includes adjusting pole 54, slider 53 and control limit stop 55, adjust pole 54 and slider 53 and form screw nut mechanism, be equipped with the spout guide rail of slope on the top of slider 53, spring holder 51 slidable sets up on the spout guide rail, be equipped with vertical slotted hole on the limit stop 55 about, spring holder 51 wears to locate in the slotted hole, guarantee that at least part of spring holder 51 is located the slotted hole all the time, adjust pole 54 drive slider 53 horizontal slip, slider 53 drives spring holder 51 and slides from top to bottom, promote spring holder 51 with the spout guide rail of slope, and limit the direction of motion of spring holder 51 with control limit stop 55, realize accurate regulation.
The specific zero setting example is as follows: gas enters from the gas inlet 11, and pressure-regulating gas is injected from the regulating gas inlet 44, so that the gas pressure of the gas and the pressure-regulating gas are regulated to preset values. If the air pressure in the third chamber 32 is smaller, the rotation adjusting rod 54 rotates clockwise, and the rotation of the adjusting rod 54 drives the sliding block 53 to move linearly, so that the spring seat 51 moves linearly upward. When spring seat 51 produced ascending motion, spring seat 51 can increase to the pressure of second elasticity subassembly 52, forces second elasticity subassembly 52 to increase servo diaphragm 42's thrust, makes servo diaphragm 42 produce ascending motion, and the interval between the lower extreme of servo diaphragm 42 and air flue this moment can correspond diminishes, when the interval diminishes: the air pressure flowing into the pressure relief channel 43 is reduced, so that the air pressure in the second chamber 35 is increased, the air pressure in the second chamber 35 is increased to force the adjusting diaphragm 36 to move upwards, the pressure adjusting disc 31 moves upwards, the opening degree of the valve port of the pressure stabilizing mechanism is increased, and the air pressure flowing into the third chamber 32 is increased; when the air pressure in the third chamber 32 changes to a predetermined value, the rotation of the adjustment lever 54 is stopped, and the proportional zero adjustment is completed, or vice versa. Preferably, the second resilient member 52 is a spring.
Preferably, the gas outlet 12 is provided with a flow regulator 23, the flow regulator 23 can ensure gas safety, the gas inlet 11 is provided with a first pressure measuring nozzle 111, the gas outlet 12 is provided with a second pressure measuring nozzle 121, and the first pressure measuring nozzle 111 and the second pressure measuring nozzle 121 are arranged to conveniently control the input and output of gas.
Preferably, the flow regulator 23 includes a driving rod, a left baffle and a right baffle are slidably disposed on the driving rod, the left baffle and the right baffle are respectively located at the left side and the right side of the gas inlet 12, a first thread structure is disposed on the driving rod, the left baffle is provided with a second thread structure, the right baffle is provided with a third thread structure, the thread directions of the second thread structure and the third thread structure are opposite, the first thread structure is respectively engaged with the second thread structure and the third thread structure, the driving rod drives the left baffle and the right baffle to be synchronously relatively close to or synchronously relatively far away from each other, the relative interval between the left baffle and the right baffle is adjusted through the driving rod, if the driving mechanism drives the left baffle to move towards the right side, the right baffle moves towards the left side, the effective diameter of the gas outlet 12 at the moment is reduced, and the corresponding flow is reduced.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a gas proportional valve for full premix burning which characterized in that includes:
the valve body comprises a fuel gas inlet and a fuel gas outlet;
the first chamber is arranged in the valve body and is used for receiving the fuel gas input by the fuel gas inlet;
a first shut-off mechanism for controlling communication or disconnection between the gas inlet and the first chamber;
the input end of the pressure stabilizing mechanism is communicated with the first cavity, and the output end of the pressure stabilizing mechanism is communicated with the fuel gas outlet and used for stabilizing and outputting fuel gas;
the proportion adjusting mechanism comprises an adjusting gas input port and a proportion adjusting assembly, the adjusting gas input port is provided with two working conditions of cut-off and external connection of adjusting gas, the adjusting gas input port is in the cut-off working condition, a valve port of the pressure stabilizing mechanism is in a closed state, the adjusting gas input port is externally connected with adjusting gas, the adjusting gas flows into the proportion adjusting assembly, and the proportion adjusting assembly controls the opening degree of the valve port of the pressure stabilizing mechanism according to the air pressure value of the adjusting gas.
2. The gas proportional valve for full premix combustion as claimed in claim 1, wherein: the pressure stabilizing mechanism comprises a pressure regulating disc, a second chamber and a third chamber, the third chamber is used for receiving gas flowing out of a valve port of the pressure stabilizing mechanism and guiding the gas to flow to a gas outlet, the pressure regulating disc is arranged on the valve port of the pressure stabilizing mechanism as a valve in a normally closed manner, a pressure regulating channel is arranged on the pressure regulating disc, one end of the pressure regulating channel extends out of the valve port of the pressure stabilizing mechanism, the other end of the pressure regulating channel extends to the second chamber, the proportional regulating assembly further comprises a front end, a rear end and a pressure relief channel, the second chamber is communicated with the front end of the proportional regulating assembly, the rear end of the proportional regulating assembly is connected with a regulated gas inlet, the pressure relief channel is connected with the gas outlet, the regulated gas is in a cut-off working condition, and the front end of the proportional regulating assembly receives the gas input by the second chamber, the gas pressure value input at the rear end of the proportional regulating component influences the communication condition between the proportional regulating component and the pressure relief channel so as to directly control the gas which is decompressed and flows out of the second cavity, and therefore the gas output by the valve port of the pressure stabilizing mechanism is indirectly controlled.
3. The gas proportional valve for full premix combustion as claimed in claim 2, wherein: the proportion adjusting assembly comprises a servo insert and a servo diaphragm, the servo insert is provided with an air passage, the upper end of the air passage is communicated with the second chamber, the lower end of the air passage is communicated with the pressure relief passage, the servo diaphragm is arranged between the pressure relief passage and the air passage, an interval exists between the top surface of the servo diaphragm and the lower end of the air passage, the top surface of the servo diaphragm is arranged at the front end of the proportion adjusting assembly, the bottom surface of the servo diaphragm is arranged at the rear end of the proportion adjusting assembly, and the relative interval between the servo diaphragm and the lower end of the air passage is affected by the pressure value of adjusting gas input by adjusting gas so as to change the gas quantity leaked to the pressure relief passage from the second chamber.
4. The gas proportional valve for full premix combustion as claimed in claim 2, wherein: the part of the second cavity is arranged to be a movable adjusting diaphragm, the adjusting diaphragm is fixedly connected with the pressure adjusting channel, the adjusting diaphragm moves up and down along with the change of the air pressure value in the second cavity and drives the pressure adjusting channel and the pressure adjusting plate to move synchronously, so that the relative interval between the pressure adjusting plate and the valve port of the pressure stabilizing mechanism is adjusted, and the opening degree of the valve port of the pressure stabilizing mechanism is changed.
5. The gas proportional valve for full premix combustion as claimed in claim 4, wherein: the pressure stabilizing mechanism further comprises a first elastic component, and the first elastic component acts on the adjusting diaphragm to enable the movement of the adjusting diaphragm to be smoother.
6. The gas proportional valve for full premix combustion as claimed in claim 3, wherein: the zero setting mechanism comprises a zero setting assembly, a spring seat and a second elastic assembly, the servo diaphragm is borne on the spring seat, the spring seat is provided with air holes which are respectively communicated with the adjusting gas input port and the servo diaphragm, the second elastic assembly is arranged between the spring seat and the servo diaphragm, and the zero setting assembly is used for adjusting the initial relative interval between the spring seat and the servo diaphragm to change the elastic potential energy possessed by the second elastic assembly, so that the preset air pressure value is adjusted.
7. The gas proportional valve for full premix combustion as claimed in claim 6, wherein: the zero setting subassembly includes adjusts pole, slider and controls limit stop, adjust the pole with the slider forms lead screw nut mechanism, be equipped with the spout guide rail of slope on the top of slider, the spring holder slidable ground sets up on the spout guide rail, control limit stop and be equipped with vertical slotted hole, the spring holder is worn to locate in the slotted hole, adjust the pole drive the slider horizontal slip, the slider drive the spring holder slides from top to bottom.
8. The gas proportional valve for full premix combustion according to any one of claims 1 to 7, characterized in that: the first stopping mechanism is used for controlling connection or disconnection between the pressure stabilizing mechanism and the first chamber.
9. The gas proportional valve for full premix combustion according to any one of claims 1 to 7, characterized in that: the gas outlet is provided with a flow regulator, the gas inlet is provided with a first pressure measuring nozzle, and the gas outlet is provided with a second pressure measuring nozzle.
10. The gas proportional valve for full premix combustion as claimed in claim 9, wherein: flow regulator includes the actuating lever, slides set up in left baffle and right baffle on the actuating lever, left side baffle and right baffle are located respectively both ends about in the gas inlet, be equipped with first helicitic texture on the actuating lever, left side baffle is equipped with second helicitic texture, be equipped with third helicitic texture on the baffle of the right side, second helicitic texture with third helicitic texture's screw thread opposite direction, first helicitic texture with second helicitic texture with third helicitic texture meshes respectively, the actuating lever drive left side baffle and right baffle are in step relatively close to or in step relatively keep away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225034.2U CN215570457U (en) | 2021-06-02 | 2021-06-02 | Gas proportional valve for full premix combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225034.2U CN215570457U (en) | 2021-06-02 | 2021-06-02 | Gas proportional valve for full premix combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215570457U true CN215570457U (en) | 2022-01-18 |
Family
ID=79865780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121225034.2U Active CN215570457U (en) | 2021-06-02 | 2021-06-02 | Gas proportional valve for full premix combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215570457U (en) |
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2021
- 2021-06-02 CN CN202121225034.2U patent/CN215570457U/en active Active
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