CN111255926B

CN111255926B - Gas proportional valve

Info

Publication number: CN111255926B
Application number: CN202010060413.4A
Authority: CN
Inventors: 杜剑明; 余健; 程益冰; 任立权; 罗燊家
Original assignee: Shaoxing Erco Electric Co ltd
Current assignee: Shaoxing Erco Electric Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2021-04-09
Anticipated expiration: 2040-01-19
Also published as: CN111255926A

Abstract

The invention discloses a fuel gas proportional valve which comprises a valve body, a flow cutoff device and an adjusting device, wherein the flow cutoff device and the adjusting device are arranged on the valve body, an air inlet cavity and an air outlet cavity are arranged on the valve body, the air inlet cavity is communicated with the air outlet cavity, a first mounting groove is formed in the top of the valve body, the flow cutoff device comprises a first mounting plate arranged in the first mounting groove, a first electromagnet arranged on the first mounting plate and a first push rod arranged below the first electromagnet, a first through cavity is formed in the top of the air inlet cavity, a first baffle plate is arranged in the air inlet cavity, a sealing plate matched with the first through cavity is arranged at the top of the first baffle plate, a sealing spring is arranged at the top of the sealing plate, a first groove matched with the sealing spring is formed in the inner wall of the first through cavity, and the first push rod penetrates through the first through.

Description

Gas proportional valve

Technical Field

The invention belongs to the technical field of gas equipment, and particularly relates to a gas proportional valve.

Background

The gas valve is a safety matching device for controlling technical parameters such as gas pressure, flow and the like in gas pipeline engineering, is used for cutting off, connecting and adjusting gas in pipelines, has good control characteristics and closing sealing performance, and is suitable for various gas medium pipelines such as city gas, liquefied petroleum, gas, natural gas, oxygen and the like.

When the gas was transported in the pipeline, for preventing that the gas from leaking, only can open the pipeline when needs, current valve switch is comparatively complicated, has more inconvenience during the use, and the practicality is not high.

Disclosure of Invention

The invention provides a reliable gas proportional valve in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a fuel gas proportional valve comprises a valve body, a flow cutoff device and an adjusting device, wherein the flow cutoff device and the adjusting device are arranged on the valve body, an air inlet cavity and an air outlet cavity are formed in the valve body, the air inlet cavity is communicated with the air outlet cavity, a first mounting groove is formed in the top of the valve body, the flow cutoff device comprises a first mounting plate arranged in the first mounting groove, a first electromagnet arranged on the first mounting plate and a first push rod arranged below the first electromagnet, a first through cavity is formed in the top of the air inlet cavity, a first baffle plate is arranged in the air inlet cavity, a sealing plate matched with the first through cavity is arranged at the top of the first baffle plate, a sealing spring is arranged at the top of the sealing plate, a first groove matched with the sealing spring is formed in the inner wall of the first through cavity, and the first push rod penetrates through the first through; when the gas is not required to be conveyed, the first baffle plate seals the gas inlet cavity, the gas cannot be conducted in the gas inlet cavity, and the gas pipeline is sealed under the action of the proportional valve, so that the gas is prevented from leaking; when gas needs to be conveyed, the first electromagnet is electrified to generate magnetic force, the first push rod is pushed to move under the action of the magnetic force, the first push rod drives the first baffle to move, the gas inlet cavity is in an open state, and the gas normally passes through the proportional valve; under the action of the adjusting device, the pressure of the gas discharged from the gas outlet cavity is controlled, so that the gas outlet pressure of the gas is changed according to actual needs, and the gas pipeline is suitable for various occasions; the first baffle is controlled in a mode of electrifying the first electromagnet, manual operation is not needed, the proportional valve is automatically opened and closed, the use difficulty of the proportional valve is reduced, and the proportional valve is more convenient to use; the sealing effect is played to first logical chamber under the closing plate effect, avoids the gas to spill from first logical intracavity, makes the closing plate also can provide sealed effect for the pipeline when removing, guarantees the security of gas pipeline's use.

A second mounting groove is formed in the top of the first through cavity, a first limiting plate matched with the second mounting groove is arranged on the first push rod, a first reset spring is arranged on the first limiting plate, a first cover plate is arranged at the top of the second mounting groove and connected into the second mounting groove through threads, and a first through hole matched with the first push rod is formed in the first cover plate; under the mutual matching of the first limiting plate and the second mounting groove, supporting force is provided for the first push rod, so that the first push rod and the first baffle form good connection and matching, and the first baffle is prevented from being damaged by the first push rod; the first limiting plate is limited under the action of the first cover plate, so that the first push rod is prevented from falling out of the second mounting groove, and the connecting effect of the first push rod and the second mounting groove is improved; under the mutual cooperation of the first return spring and the first cover plate, the movement of the first push rod is limited, and meanwhile, the automatic return capability is provided for the first push rod, so that the first baffle plate is driven to move together under the action of the first push rod; the first through hole provides a movable reserved space for the first push rod, so that the first push rod can normally move upwards to control the opening and closing of the air inlet cavity; through the screw-thread fit of first apron and second mounting groove, the dismouting of the first apron of completion that can be convenient to can directly take out first push pedal from first logical intracavity, reduce proportional valve cost of overhaul.

The top of the sealing plate is provided with a connecting block, the connecting block is provided with a through groove, the bottom of the first push rod is provided with a first movable groove, a first connecting rod is rotatably connected in the first movable groove, the bottom of the first connecting rod is movably connected with a first fixed block matched with the through groove, the inner wall of the first movable groove is provided with a second reset spring, and the inner wall of the first through cavity is provided with a fixed assembly matched with the first fixed block; when the first push rod is installed, the first push rod is inserted into the first through cavity, the first limiting plate is arranged in the second mounting groove, the second mounting groove provides supporting force for the first limiting plate, the first fixing block is arranged on the sealing plate, the second mounting groove is matched with the first limiting plate, the first push rod is positioned, the first fixing block is just arranged on one side of the through groove, the fixing assembly pushes the first fixing block to move towards the direction of the through groove, the first fixing block is inserted into the through groove, the first push rod and the sealing plate are in connection and matching under the mutual matching of the first fixing block and the through groove, the first push rod drives the first baffle to move together when moving, the on-off of the air inlet cavity is controlled, and the proportional valve works normally; make the first connecting rod bottom produce the trend of outside removal all the time under the effect of second reset spring, make fixed subassembly and first fixed block take off the contact back first fixed block and move out from leading to the inslot automatically to tear first push rod out from leading to the intracavity alone, reduce first push rod and maintain the degree of difficulty.

A second movable groove is formed in the inner wall of the first through cavity, a gas storage cavity is formed in the top of the second movable groove, the gas storage cavity is separated from the second movable groove through a first partition plate, a first opening is formed in the first partition plate, a second partition plate is arranged in the second movable groove, a second through hole is formed in the second partition plate, the fixing assembly comprises a second push rod penetrating through the second through hole, an installation block arranged at one end of the second push rod, a first push block arranged on the installation block and a first connecting spring arranged at the other end of the second push rod, a second limiting plate is further arranged at one end of the second push rod, and the first connecting spring is arranged on the second limiting plate; after the first push rod is installed, airflow in the air storage cavity enters the second movable groove, the second push rod is pushed to move outwards under the action of air pressure, the second push rod pushes the first push block to move towards the first fixed block, the first push block pushes the first fixed block to move towards the through groove, the first fixed block is embedded into the through groove, and the first push rod and the sealing plate are connected and matched under the action of the first fixed block so as to drive the first baffle to move together under the action of the first push rod; the second limiting plate has a limiting effect on the second push rod, so that the second push rod is prevented from falling out of the second movable groove, and the connecting effect of the second push rod and the second movable groove is ensured; under the first opening setting, the air storage cavity is guided to the air flow entering the second movable groove, so that the air flow enters one end of the second push rod, and the second push rod is pushed to move under the action of air pressure.

A second through cavity is formed in the top of the gas storage cavity, a first movable cavity is formed in the side wall of the second through cavity, a third push rod penetrates through the second through cavity, a third limiting plate matched with the first movable cavity is arranged on the side wall of the third push rod, and a third reset spring is arranged on the third limiting plate; the bottom of the third push rod is provided with a first push plate which is arranged in the gas storage cavity; after the first push rod is installed, the first installation plate is installed in the first installation groove, the first installation plate pushes the third push rod to move downwards, the third push rod pushes the first push plate to move towards the bottom of the gas storage cavity, airflow in the gas storage cavity is pushed into the second movable groove under the action of the first push plate, air pressure in the second movable groove is increased, the second push rod is conveniently pushed out of the second movable groove, the first fixing block is pushed into the through groove under the action of the second push rod, and the first push rod is matched with the first baffle after connection; the third limiting plate and the first movable cavity are matched with each other to limit the maximum moving distance of the third push rod, so that the third push rod is prevented from falling out of the second through cavity; the mode of packing into first mounting groove through with first mounting panel accomplishes the cooperation of fixed subassembly and first fixed block, need not unnecessary installation procedure, reduces the proportional valve installation degree of difficulty, makes the assembly of proportional valve more convenient.

The mounting block is provided with a second groove, the first push block is arranged in the second groove, the bottom of the second groove is provided with a convex block, and the bottom of the first push block is provided with a third groove matched with the convex block; a third movable groove is formed in the inner wall of the first through cavity, the second movable groove is perpendicular to the third movable groove, a first sliding block is arranged on the first push block, a first sliding groove matched with the first sliding block is formed in the inner wall of the second movable groove, and a third sliding groove matched with the first sliding block is formed in the inner wall of the third movable groove; a fourth return spring is arranged in the third movable groove; under the mutual matching of the third groove and the convex block, the first push block is connected to the mounting block so as to drive the first push block to move together when the mounting block moves; the first sliding block is matched with the first sliding groove to position the first pushing block, so that the connecting effect of the first pushing block and the mounting block is improved, and the first pushing block is prevented from being separated from the mounting block; when the first electromagnet is electrified to generate magnetic force, the first push rod drives the first baffle to move upwards, the sealing plate moves upwards along with the first baffle, the sealing plate pushes the first push block to move upwards, the first slide block enters the third sliding groove, and the first push block moves in the third movable groove, so that the first push block always provides supporting force for the first fixed block, and the connecting effect of the first push rod and the first baffle is ensured; under the mutual matching of the convex block and the third groove, the first push block can move upwards relative to the mounting block, so that the first push block is prevented from blocking the movement of the first baffle, and the air inlet cavity is normally opened; after first electro-magnet outage, first push rod down motion under the effect of second reset spring, first baffle will admit air the chamber and seal, and first ejector pad removes to the second recess on, and in the lug was embedded into the third recess, accomplish being connected of first ejector pad and installation piece, guarantee the reliability that proportional valve used.

The valve body is provided with a third mounting groove, the top of the third mounting groove is provided with a first connecting groove, the inner wall of the third mounting groove is provided with a second connecting groove, the adjusting device comprises a second mounting plate arranged in the first connecting groove, a second electromagnet arranged on the second mounting plate, a first connecting pipe arranged on the second mounting plate and a fourth push rod arranged in the first connecting pipe, and a valve assembly matched with the adjusting device is arranged in the valve body; when the gas outlet pressure in the gas outlet cavity is adjusted, the second electromagnet is electrified, and the fourth push rod is pushed to move under the action of magnetic force, so that the valve assembly is pushed to change the opening under the action of the fourth push rod, the gas outlet pressure at the gas outlet cavity is controlled, and the gas pipeline is suitable for various occasions; the power-on voltage of the second electromagnet is controlled, and the magnetic force of the second electromagnet is controlled, so that the movement stroke of the fourth push rod is controlled, and the purpose of controlling the air outlet pressure of the air outlet cavity is achieved; the first connecting pipe plays a guiding and positioning role in moving the fourth push rod, so that the fourth push rod moves in the vertical direction, and the matching effect of the fourth push rod and the valve assembly is improved.

A sealing film is arranged in the second connecting groove, a first fixing ring matched with the second connecting groove is arranged at the top of the sealing film, the middle part of the sealing film is jacked upwards, a second push plate is arranged at the middle part of the sealing film, a first gasket is arranged at the top of the second push plate, and a second gasket is arranged at the bottom of the second push plate; a fourth limiting plate is arranged at the top of the fourth push rod, a second sliding block is arranged on the side wall of the fourth limiting plate, a second sliding groove matched with the second sliding block is arranged on the first connecting pipe, and a fifth reset spring is sleeved on the outer side of the first connecting pipe; the third mounting groove is sealed under the action of a sealing film, and is isolated from the outside, so that the sealing effect of the proportional valve is ensured; the matching effect of the sealing film and the second connecting groove is improved under the action of the first fixing ring, the sealing film is pressed in the second connecting groove, and the sealing effect of the sealing film on the third mounting groove is improved; under the arrangement of the gasket, the sealing film is prevented from directly contacting with a hard object, the sealing film is protected, and the service life of the sealing film is prolonged; the second slider is mutually supported with the second spout, makes the second slider inlay in the second spout, is located first connecting tube with the fourth push rod, makes fourth push rod bottom plane and first gasket contact, reduces the loss in the gasket use.

The top of the gas storage cavity is provided with a third through cavity, the top of the third through cavity is provided with a fourth mounting groove, the valve assembly comprises a first connecting plate and a second connecting rod, the first connecting plate is arranged in the fourth mounting groove, the second connecting rod is arranged at the bottom of the first connecting plate, the bottom of the second connecting rod is provided with a second baffle, and the second baffle is provided with a plurality of third through holes; a second movable cavity is arranged on the first connecting plate, a fifth push rod is arranged in the second movable cavity, a fourth through cavity communicated with the second movable cavity is arranged on the second connecting rod, the fifth push rod penetrates through the fourth through cavity, a second connecting plate is arranged at the bottom of the fifth push rod, a mounting hole is formed in the second connecting plate, and a sealing block matched with the third through hole is arranged in the mounting hole; when the pipeline is in a closed state, the second electromagnet is not electrified, the sealing block is embedded in the third through hole, the third through hole is sealed under the action of the sealing block and is matched with the first baffle, and the safety and reliability of the proportional valve are guaranteed; when gas needs to be conveyed in the pipeline, the first electromagnet and the second electromagnet are electrified, the first baffle moves upwards to open the gas inlet cavity, the fourth push rod moves downwards to push the sealing film to move downwards, the sealing film pushes the fifth push rod to move downwards, the fifth push rod drives the second mounting plate to move downwards, the sealing block is separated from the third through hole, and the third through hole is in a conducted state, so that the gas normally flows in the proportional valve and is conveyed normally; the sealing block is directly arranged in the mounting hole, so that the sealing block can be conveniently taken out from the second connecting plate, and the assembly difficulty of the sealing block is reduced.

A third movable cavity is arranged on the second connecting plate, a second opening is formed in the side wall of the third movable cavity, a second fixed block matched with the second opening is arranged in the third movable cavity, and a second connecting spring is arranged on the side wall of the second fixed block; a cavity is formed in the side wall of the third movable cavity, a fourth through hole is formed in the top of the cavity, an extension tube is arranged at the top of the fourth through hole, a third push plate is arranged at the top of the extension tube, and a sixth reset spring is arranged at the bottom of the third push plate; third through hole department is in when the open mode, the gas enters into the intracavity of giving vent to anger from the chamber of admitting air, after the atmospheric pressure in the chamber of admitting air increases, the gas directly blows to the second connecting plate on, promote the third push pedal and remove toward second connecting plate direction under the atmospheric pressure effect, air current propelling movement to third movable chamber in flexible pipe and the cavity when the third push pedal removes, the second fixed block stretches out in the second opening under the atmospheric pressure effect, the second fixed block contacts with the intracavity wall of giving vent to anger, play the fixed action to the second connecting plate under the second fixed block effect, avoid the second connecting plate to remove under the gas pressure effect, promote the degree of accuracy to the gas storage chamber pressure control of giving vent to anger, avoid because the gas pressure increases the pressure reduction problem of giving vent to anger in the intracavity, promote the reliability that the proportional valve.

The invention has the following advantages: control is done to first baffle through the mode of first electro-magnet circular telegram, need not manual operation, makes the switch full automatization of proportional valve go on, reduces the proportional valve and uses the degree of difficulty, makes the use of proportional valve more convenient.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a cross-sectional view taken along a-a in fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of fig. 3 at B.

Fig. 6 is an enlarged view of fig. 3 at C.

Fig. 7 is an enlarged view of fig. 3 at D.

Fig. 8 is an enlarged view of fig. 3 at E.

Fig. 9 is an enlarged view of fig. 3 at F.

Fig. 10 is a cross-sectional view taken along G-G in fig. 2.

Fig. 11 is an enlarged view at G in fig. 10.

Fig. 12 is a front view of the present invention.

Fig. 13 is an enlarged view taken along J-J in fig. 12.

Fig. 14 is an enlarged view of fig. 13 at H.

Detailed Description

As shown in fig. 1 to 14, a gas proportional valve comprises a valve body 1, a flow-breaking device and an adjusting device, wherein the flow-breaking device and the adjusting device are arranged on the valve body 1, the valve body 1 is provided with a gas inlet cavity 18 and a gas outlet cavity 19, the gas inlet cavity 18 is communicated with the gas outlet cavity 19, the top of the valve body 1 is provided with a first mounting groove, the flow-breaking device comprises a first mounting plate 2 arranged in the first mounting groove, a first electromagnet 21 arranged on the first mounting plate 2, and a first push rod 11 arranged below the first electromagnet 21, the first mounting plate is fixedly connected in the first mounting groove through a screw, the top of the gas inlet cavity 18 is provided with a first through cavity, a first baffle plate 22 is arranged in the gas inlet cavity 18, the top of the first baffle plate 22 is provided with a sealing plate matched with the first through cavity, the top of the sealing plate is provided with a sealing spring, and the inner wall of the first through cavity, the first push rod 11 penetrates through the first through cavity; when the gas is not required to be conveyed, the first baffle plate seals the gas inlet cavity, the gas cannot be conducted in the gas inlet cavity, and the gas pipeline is sealed under the action of the proportional valve, so that the gas is prevented from leaking; when gas needs to be conveyed, the first electromagnet is electrified to generate magnetic force, the first push rod is pushed to move under the action of the magnetic force, the first push rod drives the first baffle to move, the gas inlet cavity is in an open state, and the gas normally passes through the proportional valve; under the action of the adjusting device, the pressure of the gas discharged from the gas outlet cavity is controlled, so that the gas outlet pressure of the gas is changed according to actual needs, and the gas pipeline is suitable for various occasions; the first baffle is controlled in a mode of electrifying the first electromagnet, manual operation is not needed, the proportional valve is automatically opened and closed, the use difficulty of the proportional valve is reduced, and the proportional valve is more convenient to use; the sealing effect is played to first logical chamber under the closing plate effect, avoids the gas to spill from first logical intracavity, makes the closing plate also can provide sealed effect for the pipeline when removing, guarantees the security of gas pipeline's use.

A second mounting groove is formed in the top of the first through cavity, a first limiting plate 114 matched with the second mounting groove is arranged on the first push rod 11, a first return spring 115 is arranged on the first limiting plate 114, a first cover plate 17 is arranged at the top of the second mounting groove, the first cover plate 17 is connected into the second mounting groove through threads, and a first through hole matched with the first push rod 11 is formed in the first cover plate 17; under the mutual matching of the first limiting plate and the second mounting groove, supporting force is provided for the first push rod, so that the first push rod and the first baffle form good connection and matching, and the first baffle is prevented from being damaged by the first push rod; the first limiting plate is limited under the action of the first cover plate, so that the first push rod is prevented from falling out of the second mounting groove, and the connecting effect of the first push rod and the second mounting groove is improved; under the mutual cooperation of the first return spring and the first cover plate, the movement of the first push rod is limited, and meanwhile, the automatic return capability is provided for the first push rod, so that the first baffle plate is driven to move together under the action of the first push rod; the first through hole provides a movable reserved space for the first push rod, so that the first push rod can normally move upwards to control the opening and closing of the air inlet cavity; through the screw-thread fit of first apron and second mounting groove, the dismouting of the first apron of completion that can be convenient to can directly take out first push pedal from first logical intracavity, reduce proportional valve cost of overhaul.

The top of the sealing plate is provided with a connecting block, the connecting block is provided with a through groove, the bottom of the first push rod 11 is provided with a first movable groove, a first connecting rod 111 is rotatably connected in the first movable groove, the bottom of the first connecting rod 111 is movably connected with a first fixed block 113 matched with the through groove, the inner wall of the first movable groove is provided with a second reset spring 112, and the inner wall of the first through cavity is provided with a fixed assembly matched with the first fixed block 113; when the first push rod is installed, the first push rod is inserted into the first through cavity, the first limiting plate is arranged in the second mounting groove, the second mounting groove provides supporting force for the first limiting plate, the first fixing block is arranged on the sealing plate, the second mounting groove is matched with the first limiting plate, the first push rod is positioned, the first fixing block is just arranged on one side of the through groove, the fixing assembly pushes the first fixing block to move towards the direction of the through groove, the first fixing block is inserted into the through groove, the first push rod and the sealing plate are in connection and matching under the mutual matching of the first fixing block and the through groove, the first push rod drives the first baffle to move together when moving, the on-off of the air inlet cavity is controlled, and the proportional valve works normally; make the first connecting rod bottom produce the trend of outside removal all the time under the effect of second reset spring, make fixed subassembly and first fixed block take off the contact back first fixed block and move out from leading to the inslot automatically to tear first push rod out from leading to the intracavity alone, reduce first push rod and maintain the degree of difficulty.

A second movable groove is formed in the inner wall of the first through cavity, a gas storage cavity is formed in the top of the second movable groove, the gas storage cavity is separated from the second movable groove through a first partition plate, a first opening is formed in the first partition plate, a second partition plate is arranged in the second movable groove, a second through hole is formed in the second partition plate, the fixing assembly comprises a second push rod 121, an installation block 12, a first push block 13 and a first connecting spring 123, the second push rod 121 is arranged in the second through hole in a penetrating mode, the installation block 12 is arranged at one end of the second push rod 121, the first push block 13 is arranged on the installation block 12, the first connecting spring 123 is arranged at the other end of the second push rod 121, a second limiting plate 122 is further arranged at one end of the second push rod 121, and the first connecting spring 123; after the first push rod is installed, airflow in the air storage cavity enters the second movable groove, the second push rod is pushed to move outwards under the action of air pressure, the second push rod pushes the first push block to move towards the first fixed block, the first push block pushes the first fixed block to move towards the through groove, the first fixed block is embedded into the through groove, and the first push rod and the sealing plate are connected and matched under the action of the first fixed block so as to drive the first baffle to move together under the action of the first push rod; the second limiting plate has a limiting effect on the second push rod, so that the second push rod is prevented from falling out of the second movable groove, and the connecting effect of the second push rod and the second movable groove is ensured; under the first opening setting, the air storage cavity is guided to the air flow entering the second movable groove, so that the air flow enters one end of the second push rod, and the second push rod is pushed to move under the action of air pressure.

A second through cavity is formed in the top of the gas storage cavity, a first movable cavity is formed in the side wall of the second through cavity, a third push rod 15 penetrates through the second through cavity, a third limiting plate 151 matched with the first movable cavity is arranged on the side wall of the third push rod 15, and a third reset spring 152 is arranged on the third limiting plate 151; the bottom of the third push rod 15 is provided with a first push plate 16, and the first push plate 16 is arranged in the gas storage cavity; after the first push rod is installed, the first installation plate is installed in the first installation groove, the first installation plate pushes the third push rod to move downwards, the third push rod pushes the first push plate to move towards the bottom of the gas storage cavity, airflow in the gas storage cavity is pushed into the second movable groove under the action of the first push plate, air pressure in the second movable groove is increased, the second push rod is conveniently pushed out of the second movable groove, the first fixing block is pushed into the through groove under the action of the second push rod, and the first push rod is matched with the first baffle after connection; the third limiting plate and the first movable cavity are matched with each other to limit the maximum moving distance of the third push rod, so that the third push rod is prevented from falling out of the second through cavity; the mode of packing into first mounting groove through with first mounting panel accomplishes the cooperation of fixed subassembly and first fixed block, need not unnecessary installation procedure, reduces the proportional valve installation degree of difficulty, makes the assembly of proportional valve more convenient.

A second groove is formed in the mounting block 12, the first pushing block 13 is arranged in the second groove, a convex block 124 is arranged at the bottom of the second groove, and a third groove matched with the convex block 124 is arranged at the bottom of the first pushing block 13; a third movable groove is formed in the inner wall of the first through cavity, the second movable groove is perpendicular to the third movable groove, a first sliding block is arranged on the first push block 13, a first sliding groove matched with the first sliding block is formed in the inner wall of the second movable groove, and a third sliding groove matched with the first sliding block is formed in the inner wall of the third movable groove; a fourth return spring 14 is arranged in the third movable groove; under the mutual matching of the third groove and the convex block, the first push block is connected to the mounting block so as to drive the first push block to move together when the mounting block moves; the first sliding block is matched with the first sliding groove to position the first pushing block, so that the connecting effect of the first pushing block and the mounting block is improved, and the first pushing block is prevented from being separated from the mounting block; when the first electromagnet is electrified to generate magnetic force, the first push rod drives the first baffle to move upwards, the sealing plate moves upwards along with the first baffle, the sealing plate pushes the first push block to move upwards, the first slide block enters the third sliding groove, and the first push block moves in the third movable groove, so that the first push block always provides supporting force for the first fixed block, and the connecting effect of the first push rod and the first baffle is ensured; under the mutual matching of the convex block and the third groove, the first push block can move upwards relative to the mounting block, so that the first push block is prevented from blocking the movement of the first baffle, and the air inlet cavity is normally opened; after first electro-magnet outage, first push rod down motion under the effect of second reset spring, first baffle will admit air the chamber and seal, and first ejector pad removes to the second recess on, and in the lug was embedded into the third recess, accomplish being connected of first ejector pad and installation piece, guarantee the reliability that proportional valve used.

A third mounting groove is formed in the valve body 1, a first connecting groove is formed in the top of the third mounting groove, a second connecting groove is formed in the inner wall of the third mounting groove, the adjusting device comprises a second mounting plate 3 arranged in the first connecting groove, a second electromagnet 32 arranged on the second mounting plate 3, a first connecting pipe 37 arranged on the second mounting plate 3 and a fourth push rod 36 arranged in the first connecting pipe 37, the second mounting plate is fixedly connected into the first connecting groove through a screw, and a valve assembly matched with the adjusting device is arranged in the valve body 1; when the gas outlet pressure in the gas outlet cavity is adjusted, the second electromagnet is electrified, and the fourth push rod is pushed to move under the action of magnetic force, so that the valve assembly is pushed to change the opening under the action of the fourth push rod, the gas outlet pressure at the gas outlet cavity is controlled, and the gas pipeline is suitable for various occasions; the power-on voltage of the second electromagnet is controlled, and the magnetic force of the second electromagnet is controlled, so that the movement stroke of the fourth push rod is controlled, and the purpose of controlling the air outlet pressure of the air outlet cavity is achieved; the first connecting pipe plays a guiding and positioning role in moving the fourth push rod, so that the fourth push rod moves in the vertical direction, and the matching effect of the fourth push rod and the valve assembly is improved.

A sealing film 34 is arranged in the second connecting groove, a first fixing ring 35 matched with the second connecting groove is arranged at the top of the sealing film 34, the middle of the sealing film 34 is jacked up, a second push plate 341 is arranged at the middle of the sealing film 34, a first gasket 342 is arranged at the top of the second push plate 341, and a second gasket 343 is arranged at the bottom of the second push plate 341; a fourth limiting plate is arranged at the top of the fourth push rod 36, a second sliding block 361 is arranged on the side wall of the fourth limiting plate, a second sliding groove matched with the second sliding block 361 is arranged on the first connecting pipe 37, and a fifth return spring 362 is sleeved on the outer side of the first connecting pipe 37; the third mounting groove is sealed under the action of a sealing film, and is isolated from the outside, so that the sealing effect of the proportional valve is ensured; the matching effect of the sealing film and the second connecting groove is improved under the action of the first fixing ring, the sealing film is pressed in the second connecting groove, and the sealing effect of the sealing film on the third mounting groove is improved; under the arrangement of the gasket, the sealing film is prevented from directly contacting with a hard object, the sealing film is protected, and the service life of the sealing film is prolonged; the second slider is mutually supported with the second spout, makes the second slider inlay in the second spout, is located first connecting tube with the fourth push rod, makes fourth push rod bottom plane and first gasket contact, reduces the loss in the gasket use.

First solid fixed ring is the magnet support, and second connecting slot bottom be equipped with the magnetic path, the magnetic path magnetism with first solid fixed ring magnetism attracts mutually, adsorbs first solid fixed ring in the second connecting slot under magnetic force, plays fixed action to the seal membrane.

The top of the first connecting pipe is rotatably connected with a limiting rod 371, when the fourth push rod is installed, a fifth reset spring is sleeved in the first connecting pipe, the fourth push rod is placed in the first connecting pipe, the second sliding block is embedded in the second sliding groove, the top surface of the fourth limiting plate and the top surface of the first connecting pipe are at the same height, the limiting rod is rotated, one end of the limiting rod is rotated to the top of the fourth limiting plate, the limiting effect on the fourth limiting plate is achieved, and the fourth push rod is prevented from being separated from the first connecting pipe; the fourth limiting plate is made of magnets, and magnetic force generated after the second electromagnet is electrified is repellent to the magnetism of the fourth limiting plate, so that the fourth limiting plate can be pushed to move downwards.

A third through cavity is formed in the top of the gas storage cavity, a fourth mounting groove is formed in the top of the third through cavity, the valve assembly comprises a first connecting plate 4 arranged in the fourth mounting groove and a second connecting rod 45 arranged at the bottom of the first connecting plate 4, a second baffle 46 is arranged at the bottom of the second connecting rod 45, and a plurality of third through holes are formed in the second baffle 46; a second movable cavity is arranged on the first connecting plate 4, a fifth push rod 42 is arranged in the second movable cavity, a fourth through cavity communicated with the second movable cavity is arranged on the second connecting rod 45, the fifth push rod 42 is arranged in the fourth through cavity in a penetrating manner, a second connecting plate 47 is arranged at the bottom of the fifth push rod 42, a mounting hole is formed in the second connecting plate 47, and a sealing block 471 matched with the third through hole is arranged in the mounting hole; when the pipeline is in a closed state, the second electromagnet is not electrified, the sealing block is embedded in the third through hole, the third through hole is sealed under the action of the sealing block and is matched with the first baffle, and the safety and reliability of the proportional valve are guaranteed; when gas needs to be conveyed in the pipeline, the first electromagnet and the second electromagnet are electrified, the first baffle moves upwards to open the gas inlet cavity, the fourth push rod moves downwards to push the sealing film to move downwards, the sealing film pushes the fifth push rod to move downwards, the fifth push rod drives the second mounting plate to move downwards, the sealing block is separated from the third through hole, and the third through hole is in a conducted state, so that the gas normally flows in the proportional valve and is conveyed normally; the sealing block is directly arranged in the mounting hole, so that the sealing block can be conveniently taken out from the second connecting plate, and the assembly difficulty of the sealing block is reduced.

A fifth limiting plate 421 is arranged on the fifth push rod, the fifth limiting plate is arranged in the second movable cavity, a supporting spring 44 is arranged at the bottom of the fifth limiting plate, and a guide rod 43 matched with the supporting spring is arranged at the bottom of the second movable cavity; the top of the second movable cavity is connected with a second cover plate 41 through threads, a fourth through hole is formed in the second cover plate, and a second push block 422 matched with the fourth through hole is arranged on the fifth limiting plate; under the arrangement of the second push block, the sealing film normally transmits force to the fifth push rod when deformed, and the sealing block is separated from the third through hole, so that gas is normally discharged from the gas outlet cavity; the fifth limiting plate has a limiting effect on the movement of the fifth push rod, so that the fifth push rod moves in the vertical direction under the action of the second electromagnet, and the matching effect of the sealing block and the third through hole is ensured; supporting spring provides the ability of reseing for the fifth limiting plate, makes the fifth push rod up the motion automatically when the second electro-magnet outage, guarantees the sealed effect of sealed piece to the third through-hole.

The mounting hole is of a conical structure, the shape of the sealing block corresponds to that of the mounting hole, and under the conical structure of the sealing block, the matching effect of the sealing block and the third through hole is improved, so that fuel gas is prevented from leaking out of the third through hole; be equipped with the tighrening ring on the mounting hole inner wall, the tighrening ring is made for rubber, when the sealed piece of installation, in pushing into the mounting hole with sealed piece, makes the tighrening ring produce deformation, increases the cooperation effect of sealed piece and mounting hole under the tighrening ring effect.

A second connecting pipe 32 is arranged on the second mounting plate, a third connecting groove is formed in the inner wall of the second connecting pipe, a second electromagnet is connected into the third connecting groove through threads, a second fixing ring 33 is sleeved on the second electromagnet, a connecting ring is arranged at the bottom of the second fixing ring, a fourth connecting groove matched with the connecting ring is formed in the top of the second connecting pipe, and the second fixing ring is rotatably connected to the second electromagnet; when the second electromagnet is installed, the second electromagnet is installed in the third connecting groove, then the second electromagnet is rotated, the second electromagnet is fixed in the third connecting groove, then the second fixing ring is rotated, the second fixing ring drives the connecting ring to rotate, the connecting ring is fixed in the fourth connecting groove, and under the action of the second fixing ring, the connecting effect of the second electromagnet and the second connecting pipe is improved.

A third movable cavity is arranged on the second connecting plate 47, a second opening is arranged on the side wall of the third movable cavity, a second fixed block 472 matched with the second opening is arranged in the third movable cavity, and a second connecting spring is arranged on the side wall of the second fixed block 472; a cavity is formed in the side wall of the third movable cavity, a fourth through hole is formed in the top of the cavity, an extension tube is arranged at the top of the fourth through hole, a third push plate is arranged at the top of the extension tube, and a sixth reset spring 473 is arranged at the bottom of the third push plate; third through hole department is in when the open mode, the gas enters into the intracavity of giving vent to anger from the chamber of admitting air, after the atmospheric pressure in the chamber of admitting air increases, the gas directly blows to the second connecting plate on, promote the third push pedal and remove toward second connecting plate direction under the atmospheric pressure effect, air current propelling movement to third movable chamber in flexible pipe and the cavity when the third push pedal removes, the second fixed block stretches out in the second opening under the atmospheric pressure effect, the second fixed block contacts with the intracavity wall of giving vent to anger, play the fixed action to the second connecting plate under the second fixed block effect, avoid the second connecting plate to remove under the gas pressure effect, promote the degree of accuracy to the gas storage chamber pressure control of giving vent to anger, avoid because the gas pressure increases the pressure reduction problem of giving vent to anger in the intracavity, promote the reliability that the proportional valve.

Claims

1. The utility model provides a gas proportional valve, includes valve body (1), locates cutoff device and adjusting device on valve body (1), be equipped with air inlet chamber (18) and play gas cavity (19) on valve body (1), air inlet chamber (18) with go out gas cavity (19) and communicate with each other, characterized in that: the top of the valve body (1) is provided with a first mounting groove, the cutoff device comprises a first mounting plate (2) arranged in the first mounting groove, a first electromagnet (21) arranged on the first mounting plate (2) and a first push rod (11) arranged below the first electromagnet (21), the top of the air inlet cavity (18) is provided with a first through cavity, a first baffle plate (22) is arranged in the air inlet cavity (18), the top of the first baffle plate (22) is provided with a sealing plate matched with the first through cavity, the top of the sealing plate is provided with a sealing spring, the inner wall of the first through cavity is provided with a first groove matched with the sealing spring, and the first push rod (11) penetrates through the first through cavity; the top of the sealing plate is provided with a connecting block, the connecting block is provided with a through groove, the bottom of the first push rod (11) is provided with a first movable groove, a first connecting rod (111) is rotatably connected in the first movable groove, the bottom of the first connecting rod (111) is movably connected with a first fixed block (113) matched with the through groove, the inner wall of the first movable groove is provided with a second reset spring (112), and the inner wall of the first through cavity is provided with a fixed assembly matched with the first fixed block (113); a second movable groove is formed in the inner wall of the first through cavity, a gas storage cavity is formed in the top of the second movable groove, the gas storage cavity is separated from the second movable groove through a first partition plate, a first opening is formed in the first partition plate, a second partition plate is arranged in the second movable groove, a second through hole is formed in the second partition plate, the fixing assembly comprises a second push rod (121) penetrating the second through hole, an installation block (12) arranged at one end of the second push rod (121), a first push block (13) arranged on the installation block (12) and a first connecting spring (123) arranged at the other end of the second push rod (121), a second limiting plate (122) is further arranged at one end of the second push rod (121), and the first connecting spring (123) is arranged on the second limiting plate (122); a second through cavity is formed in the top of the gas storage cavity, a first movable cavity is formed in the side wall of the second through cavity, a third push rod (15) penetrates through the second through cavity, a third limiting plate (151) matched with the first movable cavity is arranged on the side wall of the third push rod (15), and a third reset spring (152) is arranged on the third limiting plate (151); and a first push plate (16) is arranged at the bottom of the third push rod (15), and the first push plate (16) is arranged in the air storage cavity.

2. A gas proportioning valve according to claim 1 wherein: first logical chamber top is equipped with the second mounting groove, be equipped with on first push rod (11) with second mounting groove matched with first limiting plate (114), be equipped with first reset spring (115) on first limiting plate (114), second mounting groove top is equipped with first apron (17), first apron (17) pass through threaded connection in the second mounting groove, be equipped with on first apron (17) with first push rod (11) matched with first through-hole.

3. A gas proportioning valve according to claim 1 wherein: a second groove is formed in the mounting block (12), the first push block (13) is arranged in the second groove, a convex block (124) is arranged at the bottom of the second groove, and a third groove matched with the convex block (124) is arranged at the bottom of the first push block (13); a third movable groove is formed in the inner wall of the first through cavity, the second movable groove is perpendicular to the third movable groove, a first sliding block is arranged on the first push block (13), a first sliding groove matched with the first sliding block is formed in the inner wall of the second movable groove, and a third sliding groove matched with the first sliding block is formed in the inner wall of the third movable groove; and a fourth return spring (14) is arranged in the third movable groove.

4. A gas proportioning valve according to claim 1 wherein: be equipped with the third mounting groove on valve body (1), third mounting groove top is equipped with first spread groove, be equipped with the second spread groove on the third mounting groove inner wall, adjusting device is including locating second mounting panel (3) in the first spread groove, locating second electro-magnet (32) on second mounting panel (3), locate first connecting pipe (37) on second mounting panel (3) and locating fourth push rod (36) in first connecting pipe (37), be equipped with in valve body (1) with adjusting device matched with valve component.

5. A gas proportioning valve according to claim 4 wherein: a sealing film (34) is arranged in the second connecting groove, a first fixing ring (35) matched with the second connecting groove is arranged at the top of the sealing film (34), the middle of the sealing film (34) is jacked upwards, a second push plate (341) is arranged at the middle of the sealing film (34), a first gasket (342) is arranged at the top of the second push plate (341), and a second gasket (343) is arranged at the bottom of the second push plate; fourth push rod (36) top is equipped with the fourth limiting plate, be equipped with second slider (361) on the fourth limiting plate lateral wall, be equipped with on first connecting pipe (37) with second slider (361) matched with second spout, first connecting pipe (37) outside cover is equipped with fifth reset spring (362).

6. A gas proportioning valve according to claim 5 wherein: the top of the gas storage cavity is provided with a third through cavity, the top of the third through cavity is provided with a fourth mounting groove, the valve assembly comprises a first connecting plate (4) arranged in the fourth mounting groove and a second connecting rod (45) arranged at the bottom of the first connecting plate (4), the bottom of the second connecting rod (45) is provided with a second baffle (46), and the second baffle (46) is provided with a plurality of third through holes; the improved structure is characterized in that a second movable cavity is arranged on the first connecting plate (4), a fifth push rod (42) is arranged in the second movable cavity, a fourth through cavity communicated with the second movable cavity is arranged on the second connecting rod (45), the fifth push rod (42) is arranged in the fourth through cavity in a penetrating mode, a second connecting plate (47) is arranged at the bottom of the fifth push rod (42), a mounting hole is formed in the second connecting plate (47), and a sealing block (471) matched with the third through hole is arranged in the mounting hole.

7. A gas proportioning valve according to claim 5 wherein: a third movable cavity is arranged on the second connecting plate (47), a second opening is formed in the side wall of the third movable cavity, a second fixed block (472) matched with the second opening is arranged in the third movable cavity, and a second connecting spring is arranged on the side wall of the second fixed block (472); the side wall of the third movable cavity is provided with a cavity, the top of the cavity is provided with a fourth through hole, the top of the fourth through hole is provided with an extension tube, the top of the extension tube is provided with a third push plate, and the bottom of the third push plate is provided with a sixth reset spring (473).