CN116241676A

CN116241676A - Gas proportional valve

Info

Publication number: CN116241676A
Application number: CN202211096953.3A
Authority: CN
Inventors: 黎斌
Original assignee: Zhongshan Jiexite Electric Technology Co ltd
Current assignee: Zhongshan Jiexite Electric Technology Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-06-09

Abstract

The invention discloses a fuel gas proportional valve, which comprises an electromagnetic generating device and a valve seat, wherein a component mounting port is formed in the top of the valve seat, a valve core cavity is formed in the valve seat, and a fuel gas flow valve core seat and an elastic magnetic control valve core device which can be assembled in a separated mode are arranged in the valve core cavity; the bottom of the fuel gas flow valve core seat is connected with the lower part of the valve core cavity in a sealing way and is pressed and fixed by an electromagnetic generating device; the bottom of the fuel gas flow valve core seat is provided with a fuel gas flow hole for movably connecting with the elastic magnetic control valve core device in a penetrating way; the electromagnetic generating device is used for controlling the elastic magnetic control valve core device to move up and down through the magnetic force to adjust the gap size of the gas flowing through hole, so that the gas flowing proportion adjustment is formed; the accessories of the elastic magnetic control valve core device of the product can be preassembled by adopting an automatic production line; and then the elastic magnetic control valve core device and the fuel gas flow through valve core seat are preassembled to form an integrated valve core device assembly, and then the integrated valve core device assembly is assembled into a valve core cavity to form automatic assembly, so that the production efficiency is improved, and the labor cost is reduced.

Description

Gas proportional valve

Technical Field

The invention relates to a fuel gas circulation proportional control valve, in particular to a fuel gas proportional valve.

Background

The Chinese patent document publication No. CN216768361U discloses a gas electromagnetic valve, which comprises a gas circulation control shell A, wherein one side of the gas circulation control shell A is connected with a gas inlet joint A1, a first chamber A2 and a second chamber A3 are arranged in the gas circulation control shell A, a gas outlet flange joint A4 is arranged on the side wall of the other end of the gas circulation control shell A, the gas inlet joint A1 is communicated with the first chamber A2 through an internal gas channel, the gas inlet joint A1, the first chamber A2, the second chamber A3 and the gas outlet flange joint A4 are sequentially communicated through an internal gas channel, an electromagnetic switch valve B is hermetically arranged on the first chamber A2, the specific structure of the electromagnetic switch valve B is the prior art, and the electromagnetic switch valve B is used for opening and closing the internal gas channel opening at the bottom of the first chamber A2 and controlling the on/off of gas;

the second chamber A3 comprises an upper chamber A31 and a lower chamber A33, the upper chamber A31 and the lower chamber A33 vertically correspond to each other, a neck ring wall A32 with a smaller diameter is arranged between the upper chamber A31 and the lower chamber A33, a gas passing hole A321 is arranged in the middle of the neck ring wall A32, the upper chamber A31 is communicated with the first chamber A2 through an internal gas channel, and the lower chamber A33 is communicated with a gas outlet flange joint A4 through the internal gas channel;

The second chamber A3 is provided with a gas proportional control valve C in a sealing manner, the gas proportional control valve C comprises a reset spring C1, a movable core C2, a rubber sealing ring C3, a sealing diaphragm 1, a top support seat C4, a clamp spring C5, a magnet C6, a non-magnetic conduction sealing valve cover C7 and a magnetic induction device C8, and the magnetic induction device C8 is in the prior art;

the movable core C2 is integrally injection molded; the movable core C2 comprises a circular valve plug C21, a main rod body C22 and a central penetrating rod C23, the diameter of the circular valve plug is larger than that of a fuel gas passing hole A321, the bottom end of the main rod body is connected with the circular valve plug, the upper end of the main rod body is connected with the central penetrating rod C23, the top section of the main rod body C21 surrounds the central penetrating rod and is provided with a surrounding groove C24, the circumferential wall body of the circular valve plug C21 is inlaid with a rubber sealing ring C3, and the circular valve plug C21 and the rubber sealing ring C3 are arranged in the lower cavity A33 in the middle and correspond to the central hole of the fuel gas passing hole A321; a reset spring C1 is fixedly embedded in the middle of the inner bottom of the circular valve plug, the bottom of the reset spring C1 is supported on the bottom wall of the lower cavity A33, the movable core C2 is always jacked up by the reset spring C1 in a normal state, the rubber sealing ring C3 seals the fuel gas passing hole A321, an inner protruding locating piece A331 extends from the bottom wall of the lower cavity A33, and the inner protruding locating piece A331 is inserted into the inner bottom of the reset spring C1 to locate and fix the reset spring C1;

The sealing diaphragm 1 is round in whole, the sealing diaphragm 1 is integrally formed, is made of rubber or silica gel and is elastic in whole, has good stretching and resetting properties, and a thickening clamping ring 11 is arranged along the edge of the sealing diaphragm 1; a positioning column 12 extends and protrudes from the middle of the sealing membrane 1, and a movable core C2 penetrating hole 121 is formed in the middle of the positioning column 12 in a penetrating manner; the top column root of the positioning column 12 is provided with a thickened top wall 13 along the annular edge in an extending way, and the opposite outer top of the thickened top wall 13 is provided with a mounting platform 131; a circumferential flexible arch wall 14 is arranged between the thickened top wall 13 and the thickened clamping ring 11, the top of the flexible arch wall 14 is convex, the opposite reverse surface is provided with a groove, and a circular concave part 15 is formed in the middle of the top of the thickened top wall 13, which is surrounded by the flexible arch wall 14;

the central penetrating rod passes through the movable core C2 penetrating hole 121 upwards tightly, the positioning column 12 is inserted into the surrounding groove tightly, the diameter of the thickened top wall 13 is slightly larger than that of the positioning column 12, and the circumferential section of the positioning column 12 is propped against the lower bottom of the thickened top wall 13; the top of the central penetrating rod is fixedly connected with a top bracket seat C4 in a penetrating way, the top bracket seat C4 is embedded in the concave part 15, the mounting platform 131 of the thickened top wall 13 is pressed down, the diameter of the top bracket seat C4 is equal to that of the thickened top wall 13, and the clamp spring C5 is inserted into the central penetrating rod to press the top bracket seat C4 tightly, so that the middle of the sealing membrane 1 is clamped, sealed and fixed; a magnet C6 is fixed at the top of the top support seat C4; the sealing membrane 1 isolates the gas from the magnet C6, and the gas cannot contact the magnet C6 and is too close to the magnetic field; the edge thickening clamping ring 11 of the sealing diaphragm 1 is embedded in a groove at the top cavity edge of the second cavity A3, the non-magnetic conduction sealing valve cover C7 is tightly pressed on the thickening clamping ring 11 and then is screwed on the fuel gas circulation control shell A through a screw, the magnetic induction device C8 is fixedly connected to the outer top of the non-magnetic conduction sealing valve cover C7, and the magnetic induction device C8 is also fixedly connected with the fuel gas circulation control shell A;

The magnetic induction device C8 comprises an electromagnetic coil device C81 and a support C82, the support C82 is fixedly connected with the electromagnetic coil device C81, the electromagnetic coil device C81 is fixedly connected to the outer top of the non-magnetic conduction sealing valve cover C7, and the support C81 is fixedly connected with the fuel gas circulation control shell A.

The gas solenoid valve also comprises a gas proportional control valve C, an upper chamber A31, a neck ring wall A32, a gas passing hole A321 and a lower chamber A33 are arranged in the gas circulation control shell A, then a reset spring C1, a movable core C2, a rubber sealing ring C3, a top support seat C4, a clamp spring C5, a magnet C6, a bottom plate 1331, an inner protruding locating piece A331, a circular valve plug C21, a main rod body C22, a central penetrating rod C23 and a surrounding groove C24 are arranged on the upper chamber A31, the neck ring wall A32, the gas passing hole A321 and the lower chamber A33 together, and the components of the gas proportional control valve core device are sequentially arranged in steps.

Disclosure of Invention

In order to solve the technical problems, the invention provides a fuel gas proportional valve which is characterized in that components of a fuel gas flow valve core seat and an elastic magnetic control valve core device are preassembled through automatic production equipment and then assembled into a valve core cavity in advance, so that the production efficiency is improved.

The scheme for solving the technical problems is as follows:

the fuel gas proportional valve comprises an electromagnetic generating device and a valve seat, wherein the electromagnetic generating device is used for generating magnetic force by electrifying, a component mounting port is formed in the top of the valve seat, a valve core cavity is formed in the valve seat, a fuel gas inlet hole is formed in the upper side wall of the valve core cavity, and a fuel gas outlet hole is formed in the bottom of the valve seat; the electromagnetic generating device is fixedly connected with the top of the valve seat and seals the component mounting opening, the electromagnetic generating device is centrally arranged at the component mounting opening, and a fuel gas flow valve core seat and an elastic magnetic control valve core device which can be assembled in a separating way are arranged in the valve core cavity;

the bottom circumference of the fuel gas flow through valve core seat is fixedly and hermetically connected with the lower circumferential wall of the valve core cavity;

the electromagnetic generating device compresses and fixes the fuel gas circulation valve core seat;

the bottom of the fuel gas flow through valve core seat is provided with a fuel gas flow through hole; the gas flow hole is penetrated and movably connected with an elastic magnetic control valve core device; after entering from the gas inlet hole, the gas only flows through the gas flowing hole and then flows to the gas outlet hole;

The electromagnetic generating device is used for controlling the elastic magnetic control valve core device to move up and down through the magnetic force of the electromagnetic generating device so as to adjust the gap size of the gas flowing through the hole;

the elastic magnetic control valve core device is used for elastically adjusting the gap size of the gas flowing through hole so as to adjust the gas flow quantity, thereby forming the gas flow proportion adjustment.

The fuel gas proportional valve has the beneficial effects that: 1. the valve core cavity of the product is internally provided with the fuel gas flow valve core seat and the elastic magnetic control valve core device which can be assembled in a separated way, so that an automatic production line (automatic production equipment or a robot) is convenient to be adopted for pre-assembly;

the elastic magnetic control valve core device which is convenient to assemble in a separable way is convenient for the fittings to be preassembled by adopting an automatic production line (automatic production equipment or a robot);

the detachable/detachable gas flow through valve core seat is provided with the purpose of conveniently pre-assembling the elastic magnetic control valve core device and the gas flow through valve core seat by adopting an automatic production line (automatic production equipment or a robot) to form an integrated valve core device assembly, and then filling the valve core cavity to form automatic assembly, so that the production efficiency is improved, and the labor cost is reduced. 2. The sealing effect is good after the whole assembly, the gas circulation proportion is regulated stably,

Drawings

Fig. 1 and 2 are perspective views of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIGS. 4, 5 and 6 are exploded views of the present invention;

FIG. 7 is a perspective view of a valve seat of the present invention;

FIG. 8 is a cross-sectional view of a valve seat of the present invention;

FIG. 9 is a split view of the valve seat and electromagnetic generating device, the fuel gas flow through valve core seat, and the elastic magnetic control valve core device of the present invention;

fig. 10 is a perspective view of a valve seat of the present invention.

Electromagnetic generating device 1, mounting hole 11, concave cavity 12, valve seat 2, component mounting hole 21, valve core cavity 22, gas inlet hole 23, gas outlet hole 24, valve seat screw hole 25, and positioning column 26

The lower annular wall step 221, the lower seal ring 222, the upper annular wall step 223, the upper seal ring 224, the spring lower positioning step 225, the gas flow valve core seat 3, the elastic magnetic control valve core device 4, the gas flow hole 31, the surrounding seal groove 32, the gas flow channel 3A, the gas flow cavity 3A1, the gas flow surrounding groove 3A2, the gas inlet hole 3A3, the magnet separation flexible elastic sheet 4A, the central magnet 4B, the middle elastic valve plug device 4C, the magnet movement seal cavity 4D, the upper positioning hole 4E, the positioning spring 4F, the lower positioning step 4G, the return spring 4C1, the rubber plug 4C2, the spring upper positioning step 4C21, the back hook cavity 4C22, the movable core rod 4C3, the back hook 4C31 magnet lock core rod 4C4, the concave hole 4C5, the through core hole 4A1 and the thickened wall ring 4A2.

Detailed Description

The fuel gas proportional valve comprises an electromagnetic generating device 1 and a valve seat 2, wherein the electromagnetic generating device 1 is used for generating magnetic force (generating a magnetic field) by electrifying, and the electromagnetic generating device 1 is an electromagnetic generator; the top of the valve seat 2 is provided with a component mounting port 21, a valve core cavity 22 is arranged in the valve seat, the upper side wall is provided with a gas inlet hole 23, and the bottom is provided with a gas outlet hole 24; the spool chamber 22 is funnel-shaped; the bottom edge of the electromagnetic generating device 1 is screwed and fixedly connected with the top of the valve seat 2 through a screw assembly, and seals the component mounting opening 21, the purpose of the sealing component mounting opening 21 is to prevent gas leakage, and the sealing material of the component mounting opening 21 is generally rubber sealing rings, silica gel sealing rings, sealing glue or the like. The electromagnetic generating device 1 is centrally arranged at the component mounting opening 21 for centrally aligning the elastic magnetic control valve core device 4. A valve seat screw hole 25 is formed in one diagonal corner of four corner positions at the top of the valve seat 2, the number of the valve seat screw holes 25 is two, the other diagonal corner extends upwards to protrude a positioning column 26, and the number of the positioning columns 26 is two; the installation holes 11 are formed in four corners of the bottom of the electromagnetic generating device 1, after the electromagnetic generating device 1 is installed at the top of the valve seat 2, two positioning posts 26 are inserted into the installation holes 11 to be positioned, and the other two installation holes 11 and the two valve seat screw holes 25 vertically correspond to each other and are screwed and fixed at the top of the valve seat 2 through the two holes by using screw assemblies. Therefore, the automatic production robot can position the electromagnetic generating device 1 at the top of the valve seat 2 and then screw the screw, thereby facilitating automatic assembly production.

The technical improvement of the product is as follows: the valve core cavity 22 is internally provided with a fuel gas flow valve core seat 3 and an elastic magnetic control valve core device 4 which can be assembled in a separating way (the valve core cavity 22 is internally provided with the fuel gas flow valve core seat 3 and the elastic magnetic control valve core device 4); the fuel gas flow valve core seat 3 can be just installed in the valve core cavity 22 without loose; the fuel gas circulation valve core seat 3 is used for installing an elastic magnetic control valve core device 4;

the detachable (separated) fuel gas flow through valve core seat 3 is arranged to facilitate the preassembly of the elastic magnetic control valve core device 4 and the fuel gas flow through valve core seat 3 by adopting an automatic production line to form an integrated valve core device assembly, and the integrated valve core device assembly is then filled into the valve core cavity 22;

the detachable fuel gas flow through valve core seat 3 is arranged to facilitate the adoption of an automatic robot to load the integrated valve core device assembly into the valve core cavity 22;

the bottom circumference of the gas flow through valve core seat 3 is fixed and connected with the lower circumferential wall of the valve core cavity 22 in a sealing way, the sealing way is not limited, and a rubber sealing ring, a silica gel sealing ring, a sealant or the like can be adopted;

the electromagnetic generating device 1 compresses the circumference of the fixed gas flow valve core seat 3, the bottom edge of the electromagnetic generating device 1 is screwed on the top of the valve seat 2 through a screw assembly, so that the fixed gas flow valve core seat 3 can be compressed, and the fixed gas flow valve core seat 3 is easy to assemble by a robot;

The bottom of the fuel gas flow through valve core seat 3 is provided with a fuel gas flow through hole 31; the gas flow hole 31 is penetrated and movably connected with an elastic magnetic control valve core device 4, the elastic magnetic control valve core device 4 is also arranged in the middle of the gas flow valve core seat 3, and the elastic magnetic control valve core device 4 is used for elastically adjusting the gap size of the gas flow hole 31;

the bottom circumference of the gas flow valve core seat 3 is fixedly and hermetically connected with the lower circumferential wall of the valve core cavity 22, so that gas can only flow through the gas flow hole 31 and then to the gas outlet hole 24 after entering from the gas inlet hole 23; the gas leakage between the bottom circumference of the gas flow valve core seat 3 and the lower circumference of the valve core cavity 22 is prevented, and the gas proportion adjustment is influenced;

the electromagnetic generating device 1 is used for controlling the elastic magnetic control valve core device 4 to move up and down through the magnetic force to adjust the gap size of the fuel gas flowing through the hole 31;

the elastic magnetic control valve core device 4 is used for elastically adjusting the gap size of the gas flowing through the hole 31, so as to adjust the gas flow rate, thereby forming gas flow proportion adjustment.

Normally, the electromagnetic generating device 1 is not electrified, the elastic magnetic control valve core device 4 is reset by self elasticity, and the elastic magnetic control valve core device 4 magnetically attracts the electromagnetic generating device 1 to close the gas flowing through hole 31; the gas proportion adjustment working principle of the product is as follows: utilizes the principle of homopolar repulsion and heteropolar attraction of magnetic fields. After the electromagnetic generating device 1 is electrified to generate a magnetic field, the elastic magnetic control valve core device 4 obtains a magnetic field (magnetic force) with the same polarity as the electromagnetic generating device 1, so that the electromagnetic generating device 1 is electrified to generate a magnetic field quantity to control the elastic magnetic control valve core device 4 to move up and down; the larger the power-on amount of the electromagnetic generating device 1 is, the larger the generated magnetic field amount is, the larger the magnetic field repulsive force is, the farther the elastic magnetic control valve core device 4 is away from the electromagnetic generating device 1, and the larger the gap of the gas flow through hole 31 is opened by the pushing-down movement of the elastic magnetic control valve core device 4, the larger the gas flow flux is; conversely, the smaller the energization amount of the electromagnetic generating device 1, the smaller the generated magnetic field amount, the smaller the magnetic field repulsive force, and the closer the elastic magnetic control valve core device 4 is to the electromagnetic generating device 1, the smaller the gap in which the elastic magnetic control valve core device 4 is pushed down to open the gas flow hole 31, and the smaller the gas flow amount.

The preferable technical scheme is as follows: the elastic magnetic control valve core device 4 comprises a magnet separation flexible elastic sheet 4A, a center magnet 4B and an intermediate elastic valve plug device 4C; the magnet separation flexible elastic sheet 4A is round and made of rubber material; the magnetic field of the central magnet 4B is the same as the magnetic field generated by energizing the electromagnetic generating device 1, and the electromagnetic generating device 1 is fixedly arranged, so that the elastic magnetic control valve core device 4 is repelled to move up and down;

the peripheral edge of the magnet separation flexible elastic sheet 4A is clamped between the electromagnetic generating device 1 and the fuel gas circulation valve core seat 3, and the magnet separation flexible elastic sheet 4A seals the component mounting opening 21; a magnet movement sealing cavity 4D is formed between the magnet separation flexible elastic sheet 4A and the inner bottom of the electromagnetic generating device 1, the magnet movement sealing cavity 4D provides a space for the magnet separation flexible elastic sheet 4A and the center magnet 4B to move up and down, the center magnet 4B is fixed in the middle of the top of the magnet separation flexible elastic sheet 4A, the center magnet 4B is arranged in the magnet movement sealing cavity 4D, the top of the middle elastic valve plug device 4C is fixedly connected with the middle of the magnet separation flexible elastic sheet 4A, and the middle elastic valve plug device 4C is movably connected with the gas flow through hole 31 in a penetrating mode;

The magnet separation flexible elastic sheet 4A is provided with a central magnet 4B and a central elastic valve plug device 4C which are positioned at the center; the middle elastic valve plug device 4C is arranged in the middle of the gas flow valve core seat 3 in a centering way, and the upper part of the middle elastic valve plug device 4C is not eccentric and deviated due to the fact that the top of the middle elastic valve plug device 4C is fixedly connected with the middle of the magnet separation flexible elastic sheet 4A; the center magnet 4B and the middle elastic valve plug device 4C are concentrically and vertically corresponding to each other, so that the gravity of the center magnet 4B and the middle elastic valve plug device 4C are centered, the center magnet 4B and the middle elastic valve plug device 4C move up and down in a straight line when being pulled/pushed by a magnetic field, the gap size adjustment of the fuel gas flowing through the holes 31 is integrally consistent, and the fuel gas is not eccentric and offset;

the magnet movement sealing cavity 4D is arranged to isolate the central magnet 4B from gas, prevent the central magnet 4B from adhering to gas impurities, prevent gas chemical corrosion and oxidize the central magnet 4B; meanwhile, the magnet movement sealing cavity 4D provides a space for the magnet to separate the flexible elastic sheet 4A and the central magnet 4B from up and down movement and provides a space for the middle elastic valve plug device 4C to adjust the gap size of the gas flowing through the hole 31 to move up and down;

the magnetic field generated by energizing the electromagnetic generating device 1 has the same polarity as the magnetic field of the central magnet 4B to generate repulsive force, the central magnet 4B is repelled, and the central magnet 4B synchronously drives the middle elastic valve plug device 4C to move up and down to adjust the gap size of the gas flowing through the hole 31; namely: the larger the power-on amount of the electromagnetic generating device 1 is, the larger the generated magnetic field amount is, the larger the magnetic field repulsive force is, the more the center magnet 4B is far away from the electromagnetic generating device 1, and the larger the gaps between the center magnet 4B and the middle elastic valve plug device 4C, which are pushed down to open the gas flow holes 31, are, the larger the gas flow flux is; conversely, the smaller the energization amount of the electromagnetic generating device 1, the smaller the generated magnetic field amount, the smaller the magnetic field repulsive force, the magnetic force of the center magnet 4B attracts the ferrous metal of the electromagnetic generating device 1 and the middle elastic valve plug device 4C to lift by self-repulsive force, the closer the center magnet 4B is to the electromagnetic generating device 1, the middle elastic valve plug device 4C lifts, and the smaller the gap of the middle elastic valve plug device 4C opening the gas flow hole 31, the smaller the gas flow amount.

The central magnet 4B and the ferrous metal of the electromagnetic generating device 1 are magnetic fields with opposite attraction, the electromagnetic generating device 1 is not electrified in a normal state, and the middle elastic valve plug device 4C lifts the middle elastic valve plug device 4C through the self elastic reset property and the magnetic force of the central magnet 4B and the ferrous metal magnetic attraction of the electromagnetic generating device 1 to enable the gas to flow through the hole 31 to be closed;

the magnet separation flexible elastic sheet 4A, the center magnet 4B and the middle elastic valve plug device 4C can be assembled by a robot, so that the production efficiency is improved.

The preferable technical scheme is as follows: the middle elastic valve plug device 4C at least comprises a reset spring 4C1, a rubber plug 4C2 and a movable core rod 4C3, and the diameter of the rubber plug 4C2 is larger than that of the fuel gas flowing hole 31, so that the fuel gas flowing hole 31 can be closed and the gap size of the fuel gas flowing hole 31 can be adjusted; the return spring 4C1 is pressed between the rubber plug 4C2 and the bottom of the valve core cavity 22, and the rubber plug 4C2 is arranged at the hole below the fuel gas flow hole 31; the lower section of the movable core rod 4C3 is connected in the middle of the fuel gas flowing hole 31 in a penetrating way, the lower end of the movable core rod 4C3 is fixedly connected with the rubber plug 4C2, and the upper end of the movable core rod is fixedly connected with the middle of the magnet separation flexible elastic sheet 4A; the return spring 4C1 always jacks up the rubber plug 4C2 and the movable core rod 4C3 through self-rebound property, and the movable core rod 4C3 jacks up the magnet separation flexible elastic sheet 4A, so that the rubber plug 4C2 can close the fuel gas flow hole 31; the center magnet 4B moves up and down to synchronously drive the movable core bar 4C3 to move up and down so that the rubber plug 4C2 adjusts the gap size of the gas flow hole 31 to adjust the gas flow rate.

The center magnet 4B moves up and down (moves) synchronously to drive the movable core bar 4C3 to move up and down (move), and the movable core bar 4C3 moves up and down (moves) to drive the rubber plug 4C2 to move up and down, so that the gap size of the fuel gas flowing through the hole 31 is adjusted through the rubber plug 4C 2.

Normally, the electromagnetic generating device 1 is not electrified, the movable core rod 4C3 and the rubber plug 4C2 are pulled and lifted when the central magnet 4B is used for magnetically attracting iron metal of the electromagnetic generating device 1 upwards, and the reset spring 4C1 is used for assisting in jacking the rubber plug 4C2 through the self elastic reset attribute to close the fuel gas flowing through hole 31; the fuel gas flow hole 31 is circular, and the rubber plug 4C2 is conical;

a spring-mounted positioning step 4C21 is arranged at the bottom of the rubber plug 4C2, a spring-mounted positioning step 225 is arranged at the bottom of the valve core cavity 22, the spring-mounted positioning step 225 is just suitable for the return spring 4C1, and two ends of the return spring 4C1 are propped against the corresponding spring-mounted positioning step 4C21 and the spring-mounted positioning step 225 for positioning; when the return spring 4C1 is assembled using an automated apparatus, the return spring 4C1 can be placed on the under-spring positioning step 225 to erect the return spring 4C1 after being grasped in the spool chamber 22; after the gas flow valve core seat 3 and the elastic magnetic control valve core device 4 are grabbed by the automatic equipment and put into the valve core cavity 22, a positioning step 4C21 on the bottom spring of the rubber plug 4C2 is inserted into the top of the reset spring 4C1 for positioning; the return spring 4C1 is assembled by an automated device (robot), and the production efficiency is improved.

The lower end of the movable core rod 4C3 is extended with a back-off hook 4C31, the top of the rubber plug 4C2 is provided with a back-off cavity 4C22, the lower end of the movable core rod 4C3 is inserted into the back-off cavity 4C22 from a top insertion hole of the rubber plug 4C2, and the cavity wall is tightly hooked through the back-off hook 4C31 to form fixed connection; the robot grabs the movable core rod 4C3 and inserts the lower end of the movable core rod into the barb cavity 4C22 of the rubber plug 4C2 for assembly, so that the production efficiency is improved.

The preferable technical scheme is as follows: the middle elastic valve plug device 4C also comprises a magnet lock core rod 4C4 for fixing the center magnet 4B; the central magnet 4B is a central magnetic ring; a core penetrating hole 4A1 is formed in the middle of the magnet separation flexible elastic sheet 4A, a thickened wall ring 4A2 is extended along the reverse surface hole of the core penetrating hole 4A1, and the thickened wall ring 4A2 is used for increasing the sealing area and is clamped and fixedly connected more firmly; the top of the movable core rod 4C3 is provided with a concave hole 4C5, a thickened wall ring 4A2 can be just inserted into the concave hole 4C5, so that the top of the movable core rod 4C3 is more firmly connected with the magnet separation flexible elastic sheet 4A, the anti-falling capability is better, the up-and-down movement pulling anti-falling capability of the magnet separation flexible elastic sheet 4A is better, the central magnetic ring is fixed in the middle of the top of the magnet separation flexible elastic sheet 4A, the annular hole, the core penetrating hole 4A1 and the concave hole 4C5 of the central magnetic ring vertically correspond, and the magnet lock core rod 4C4 is connected with the annular hole, the core penetrating hole 4A1 and the center of the concave hole 4C5 of the central magnetic ring in a penetrating way in a fixed and sealed manner; the magnet lock core rod 4C4 and the movable core rod 4C3 are fixed through clamping; the preferable technical scheme is as follows: the inner bottom of the electromagnetic generating device 1 is provided with a concave cavity 12; the peripheral edge of the magnet-partitioning flexible elastic sheet 4A is clamped at the edge between the electromagnetic generating device 1 and the gas flow valve core holder 3, so that the concave cavity 12 becomes the magnet-moving seal cavity 4D. The concave cavity 12 provides more space for arranging the magnet movement sealing cavity 4D, meanwhile, the center magnet 4B is closer to the magnetic induction coil of the electromagnetic generating device 1, the magnetic field of the electromagnetic generating device 1 is better transmitted to the center magnet 4B, the magnetic distance is closer, and the up-and-down movement of the middle elastic valve plug device 4C is more stable.

In the assembly process, the robot firstly grabs the magnet separation flexible elastic sheet 4A, so that the thickened wall ring 4A2 is inserted into the concave hole 4C5 for positioning, then grabs the central magnetic ring and places the central magnetic ring in the middle of the magnet separation flexible elastic sheet 4A, then grabs the magnet lock core rod 4C4, so that the magnet lock core rod 4C4 is inserted downwards to pass through the central magnetic ring and the through hole 4A1 and then inserted into the concave cavity 12, the bottom of the magnet lock core rod 4C4 is clamped and fixed with the inner wall of the concave cavity 12, and therefore, the magnet lock core rod 4C4 is connected with the movable core rod 4C3 to clamp the central magnetic ring and the magnet separation flexible elastic sheet 4A, and gaps between the central magnetic ring and the magnet separation flexible elastic sheet 4A2 are sealed through the magnet separation flexible elastic sheet 4A and the thickened wall ring 4A 2; the structure ensures that the magnet lock core rod 4C4, the magnet separation flexible elastic sheet 4A and the movable core rod 4C3 are firmly and stably connected; the magnet lock core rod 4C4, the magnet separation flexible elastic sheet 4A, and the movable core rod 4C3 are assembled by a robot for connection.

The preferable technical scheme is as follows: the middle elastic valve plug device 4C further comprises an upper positioning hole 4E, a positioning spring 4F and a lower positioning step 4G, wherein the upper positioning hole 4E is formed in the inner top of the concave cavity 12, the lower positioning step 4G is formed in the top of the magnet lock core rod 4C4, the positioning spring 4F is arranged in the magnet motion sealing cavity 4D, the upper end of the positioning spring 4F is inserted into the upper positioning hole 4E, and the lower end of the positioning spring 4F is inserted into the lower positioning step 4G; because the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 have certain gravity, and the magnet separation flexible elastic sheet 4A is thinner, when the machine vibrates/shakes in the use process, the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 shake somewhat, the rubber plug 4C2 follows up, and the gas circulation clearance is unstable in adjustment, so that the gas flow is unstable; after the positioning spring 4F is installed, when vibration/shake occurs to the machine in the using process, the positioning spring 4F can enable the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 to be more centered and stable, eccentric shake of the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 is greatly reduced, the size of a gas circulation gap is adjusted to be more stable, and the gas flow is stable and constant;

Meanwhile, after the positioning spring 4F is installed, the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 move up and down a little more slowly, are stable a little more, and the size transition of the gas circulation gap is regulated by the rubber plug 4C2 more stably and orderly.

The preferable technical scheme is as follows: the top edge of the gas flow through valve core seat 3 is provided with a surrounding sealing groove 32, the annular periphery of the magnet separation flexible elastic sheet 4A is embedded into the surrounding sealing groove 32 along the annular body, and the annular periphery of the magnet separation flexible elastic sheet 4A is sealed along the annular body by pressing the magnet at the inner bottom of the electromagnetic generating device 1.

When the automatic production robot is used for assembly, the surrounding sealing groove 32 provides positioning for installing the magnet separation flexible elastic sheet 4A, the magnet separation flexible elastic sheet 4A is placed on the top of the gas flow through valve core seat 3 after being grabbed, the periphery of the magnet separation flexible elastic sheet 4A falls into the surrounding sealing groove 32 along the ring body to finish the installation positioning, so that the automatic production robot is convenient to assemble and position, and the assembly efficiency is improved; meanwhile, the up-and-down movement pulling and anti-falling performance of the magnet separation flexible elastic sheet 4A is better, and the magnet separation flexible elastic sheet 4A is prevented from possibly falling off.

The preferable technical scheme is as follows: the wall body of the gas flow through valve core seat 3 is provided with a gas flow channel 3A, a gas inlet hole 23, the gas flow channel 3A, a gas flow hole 31 and a gas outlet hole 24 are communicated, and gas enters the gas flow channel 3A from the gas inlet hole 23 and then only flows through the gas flow hole 31 and then reaches the gas outlet hole 24; the gas flow path is reasonably set according to the structure of the gas flow valve core seat 3.

The preferable technical scheme is as follows: the lower wall body of the valve core cavity 22 is provided with a lower annular wall step 221, a lower sealing ring 222 is embedded on the lower annular wall step 221, the lower sealing ring 222 is made of rubber, and the periphery of the bottom ring of the fuel gas circulation valve core seat 3 is tightly pressed against the lower sealing ring 222, so that the periphery of the bottom of the fuel gas circulation valve core seat 3 is fixedly connected with the peripheral wall of the lower part of the valve core cavity 22 in a sealing manner.

The purpose of the lower annular wall step 221 is to facilitate positioning of the fuel gas flow through valve core seat 3 after being installed in the valve core cavity 22, and the lower seal ring 222 is easy to install and position, so that the bottom annular periphery of the fuel gas flow through valve core seat 3 is pressed against the lower seal ring 222, and the bottom annular periphery of the fuel gas flow through valve core seat 3 and the lower annular wall of the valve core cavity 22 are easy to seal, and the sealing effect is good.

The robot assembly gas flow valve core seat 3 and the lower sealing ring 222 which are convenient for automatic production are positioned.

Preferably: a lower sealing ring groove is formed in the lower annular wall step 221, and after the lower sealing ring 222 is grabbed by an automatic production robot and placed into the valve core cavity 22, the lower sealing ring 222 is automatically guided into the lower sealing ring groove through the lower annular wall step 221 to be positioned, anti-falling and anti-deviation, so that the lower sealing ring 222 is assembled more accurately;

the preferable technical scheme is as follows: an upper annular wall step 223 is formed on the upper wall body of the valve core cavity 22, an upper sealing ring 224 is inlaid on the upper annular wall step 223, and the upper annular periphery of the fuel gas flow through valve core seat 3 is tightly pressed against the upper sealing ring 224, so that the upper annular periphery of the fuel gas flow through valve core seat 3 is fixedly connected with the cavity mouth wall periphery of the valve core cavity 22 in a sealing manner.

The purpose of the upper annular wall step 223 is to facilitate positioning of the fuel gas flow through valve core seat 3 after being installed in the valve core cavity 22, and the upper seal ring 224 is easy to install and position, and the upper annular periphery of the fuel gas flow through valve core seat 3 is pressed against the upper seal ring 224, so that the upper annular periphery of the fuel gas flow through valve core seat 3 and the cavity mouth annular wall of the valve core cavity 22 are easy to seal, and the sealing effect is good.

The robot assembly gas flow valve core seat 3 and the upper sealing ring 224 which are convenient for automatic production are positioned.

Preferably: an upper sealing ring groove is formed in the upper annular wall step 223, and an automatic production robot grabs the upper sealing ring 224 and automatically guides the upper sealing ring 224 into the valve core cavity 22 through the upper annular wall step 223 to position, prevent falling and deviate, so that the upper sealing ring 224 is assembled more accurately;

the preferable technical scheme is as follows: a gas circulation cavity 3A1 is formed in the gas flow through valve core seat 3, the gas circulation cavity 3A1 provides space for installing the elastic magnetic control valve core device 4 and gas circulation, and a magnet separates a flexible elastic sheet 4A to seal a top cavity opening of the gas circulation cavity 3A 1; the outer side wall of the gas flow through valve core seat 3 is provided with a gas flow surrounding groove 3A2, the gas flow surrounding groove 3A2 is horizontally and correspondingly communicated with the gas inlet hole 23, the gas flow surrounding groove 3A2 is used for being in butt joint communication with the gas inlet hole 23 to provide a more spacious gas flow channel 3A and adjust balanced gas flow pressure, the inner concave wall of the gas flow surrounding groove 3A2 is provided with gas inlet holes 3A3, one to three gas inlet holes 3A3 can be arranged, and the gas flow surrounding groove 3A2, the gas inlet holes 3A3 and the gas flow cavity 3A1 form the gas flow channel 3A; the gas inlet hole 23, the gas circulation surrounding groove 3A2, the gas inlet hole 3A3, the gas circulation cavity 3A1, the gas flow hole 31 and the gas outlet hole 24 are communicated. The gas flow chamber 3A1 can adjust the gas flow pressure balance, and the gas flowing into the gas flow chamber 3A1 can pass through the gas flow hole 31 in a relatively balanced manner.

The preferable technical scheme is as follows: the gas flow through valve core seat 3 is integrally injection molded by plastic machinery and is hard, so that the gas flow around the groove 3A2, the gas inlet hole 3A3, the gas flow cavity 3A1, the gas flow through hole 31 and the surrounding sealing groove 32 are integrally injection molded. The valve seat 2 is made of aluminum, and the valve seat 2 is integrally die-cast by an aluminum die-casting machine, whereby the component mounting port 21, the spool chamber 22, the gas inlet port 23, the gas outlet port 24, the lower annular wall step 221, and the upper annular wall step 223 are integrally die-cast.

The specific structure of the product is as follows:

the fuel gas proportional valve comprises an electromagnetic generating device 1 and a valve seat 2, wherein the electromagnetic generating device 1 is used for generating magnetic force (generating a magnetic field) by electrifying, and the electromagnetic generating device 1 is an electromagnetic generator; the top of the valve seat 2 is provided with a component mounting port 21, a valve core cavity 22 is arranged in the valve seat, the upper side wall is provided with a gas inlet hole 23, and the bottom is provided with a gas outlet hole 24; the spool chamber 22 is funnel-shaped; the electromagnetic generating device 1 is arranged in the middle of the component mounting port 21 and is used for aligning the elastic magnetic control valve core device 4 in the middle; the fuel gas proportional valve is mainly suitable for a fuel gas water heater; the shape/external structure of the valve seat 2 is not limited to the shape or external structure of the existing drawings.

A valve seat screw hole 25 is formed in one diagonal corner of four corner positions at the top of the valve seat 2, the number of the valve seat screw holes 25 is two, the other diagonal corner extends upwards to protrude a positioning column 26, and the number of the positioning columns 26 is two; the installation holes 11 are formed in four corners of the bottom of the electromagnetic generating device 1, after the electromagnetic generating device 1 is installed at the top of the valve seat 2, two positioning posts 26 are inserted into the installation holes 11 to be positioned, and the other two installation holes 11 and the two valve seat screw holes 25 vertically correspond to each other and are screwed and fixed at the top of the valve seat 2 through the two holes by using screw assemblies. Therefore, the automatic production robot can position and screw the electromagnetic generating device 1 at the top of the valve seat 2, thereby facilitating automatic assembly production.

The valve core cavity 22 is internally provided with a fuel gas flow valve core seat 3 and an elastic magnetic control valve core device 4 which can be assembled in a separating way; the valve core cavity 22 and the fuel gas flow valve core seat 3 are round, and the fuel gas flow valve core seat 3 can be just arranged in the valve core cavity 22 without loose; the fuel gas circulation valve core seat 3 is used for installing an elastic magnetic control valve core device 4;

the elastic magnetic control valve core device 4 comprises a magnet separation flexible elastic sheet 4A, a central magnet 4B, a return spring 4C1, a rubber plug 4C2, a movable core rod 4C3, a magnet lock core rod 4C4, an upper positioning hole 4E, a positioning spring 4F and a lower positioning step 4G,

The inner bottom of the electromagnetic generating device 1 is provided with a concave cavity 12; the peripheral edge of the magnet-partitioning flexible elastic sheet 4A is clamped at the edge between the electromagnetic generating device 1 and the gas flow valve core holder 3, so that the concave cavity 12 becomes the magnet-moving seal cavity 4D. The magnet movement sealing cavity 4D provides space for the magnet separation flexible elastic sheet 4A and the center magnet 4B to move up and down, the center magnet 4B is fixed in the middle of the top of the magnet separation flexible elastic sheet 4A, and the center magnet 4B is arranged in the magnet movement sealing cavity 4D. The concave cavity 12 provides more space for arranging the magnet movement sealing cavity 4D, meanwhile, the center magnet 4B is closer to the magnetic induction coil of the electromagnetic generating device 1, the magnetic field of the electromagnetic generating device 1 is better transmitted to the center magnet 4B, the magnetic distance is closer, and the up-and-down movement of the middle elastic valve plug device 4C is more stable;

the diameter of the rubber stopper 4C2 is larger than the gas flow hole 31, so that the gas flow hole 31 can be closed and the gap size of the gas flow hole 31 can be adjusted; the return spring 4C1 is pressed between the rubber plug 4C2 and the bottom of the valve core cavity 22, and the rubber plug 4C2 is arranged at the hole below the fuel gas flow hole 31; the lower section of the movable core rod 4C3 is connected with the gas flow hole 31 in a penetrating way, the lower end of the movable core rod 4C3 is fixedly connected with the rubber plug 4C2, and the upper end of the movable core rod is fixedly connected with the middle of the magnet separation flexible elastic sheet 4A; the return spring 4C1 always jacks up the movable core rod 4C3 through the rubber plug 4C2, and the movable core rod 4C3 jacks up the magnet separation flexible elastic sheet 4A; the center magnet 4B moves up and down to synchronously drive the movable core bar 4C3 to move up and down so that the rubber plug 4C2 adjusts the gap size of the gas flow hole 31 to adjust the gas flow rate.

The central magnet 4B is a central magnetic ring; a core penetrating hole 4A1 is formed in the middle of the magnet separation flexible elastic sheet 4A, a thickened wall ring 4A2 is extended along the reverse surface hole of the core penetrating hole 4A1, and the thickened wall ring 4A2 is used for increasing the sealing area and ensuring firm clamping and fixing connection; the top of the movable core rod 4C3 is provided with a concave hole 4C5, a thickened wall ring 4A2 can be just inserted into the concave hole 4C5, so that the top of the movable core rod 4C3 is more firmly connected with the magnet separation flexible elastic sheet 4A, the anti-falling capability is better, the up-and-down movement pulling anti-falling capability of the magnet separation flexible elastic sheet 4A is better, the central magnetic ring is fixed in the middle of the top of the magnet separation flexible elastic sheet 4A, the annular hole of the central magnetic ring, the core penetrating hole 4A1 and the concave hole 4C5 are vertically corresponding, and the magnet lock core rod 4C4 is connected in a penetrating way at the centers of the central magnetic ring, the core penetrating hole 4A1 and the concave hole 4C5 in a fixed and sealed way; the magnet lock core rod 4C4 is connected with the movable core rod 4C3 by screwing, clamping, connecting with the inverted hook 4C31 and the like; after the magnet lock core rod 4C4 is connected with the movable core rod 4C3, the central magnetic ring and the magnet separation flexible elastic sheet 4A are clamped, and gaps between the magnet separation flexible elastic sheet 4A and the thickened wall ring 4A2 are sealed; the structure ensures that the magnet lock core rod 4C4, the magnet separation flexible elastic sheet 4A and the movable core rod 4C3 are firmly and stably connected; the connection of the magnet lock core rod 4C4, the magnet separation flexible elastic sheet 4A and the movable core rod 4C3 can be completed by a robot.

The upper positioning hole 4E is formed in the inner top of the concave cavity 12, the lower positioning step 4G is formed in the top of the magnet lock core rod 4C4, the positioning spring 4F is arranged in the magnet motion sealing cavity 4D, the upper end of the positioning spring 4F is inserted into the upper positioning hole 4E, and the lower end of the positioning spring 4F is inserted into the lower positioning step 4G; because the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 have certain gravity, and the magnet separation flexible elastic sheet 4A is thinner, when the machine vibrates/shakes in the use process, the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 shake somewhat, the rubber plug 4C2 follows up, and the gas circulation clearance is unstable in adjustment, so that the gas flow is unstable; after the positioning spring 4F is installed, when vibration/shake occurs to the machine in the using process, the positioning spring 4F can enable the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 to be more centered and stable, eccentric shake of the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 is greatly reduced, the size of a gas circulation gap is adjusted to be more stable, and the gas flow is stable and constant; meanwhile, after the positioning spring 4F is installed, the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3 move up and down a little more slowly, are stable a little more, and the size transition of the gas circulation gap is regulated by the rubber plug 4C2 more stably and orderly.

The lower wall body of the valve core cavity 22 is provided with a lower annular wall step 221, a lower sealing ring 222 is embedded on the lower annular wall step 221, the lower sealing ring 222 is made of rubber, and the periphery of the bottom ring of the fuel gas circulation valve core seat 3 is tightly pressed against the lower sealing ring 222, so that the periphery of the bottom of the fuel gas circulation valve core seat 3 is fixedly connected with the peripheral wall of the lower part of the valve core cavity 22 in a sealing manner.

The purpose of the lower annular wall step 221 is to facilitate positioning of the fuel gas flow through valve core seat 3 after being installed in the valve core cavity 22, and the lower seal ring 222 is easy to install and position, so that the bottom annular periphery of the fuel gas flow through valve core seat 3 is pressed against the lower seal ring 222, and the bottom annular periphery of the fuel gas flow through valve core seat 3 and the lower annular wall of the valve core cavity 22 are easy to seal, and the sealing effect is good. The robot assembly gas flow valve core seat 3 and the lower sealing ring 222 which are convenient for automatic production are positioned.

An upper annular wall step 223 is formed on the upper wall body of the valve core cavity 22, an upper sealing ring 224 is inlaid on the upper annular wall step 223, and the upper annular periphery of the fuel gas flow through valve core seat 3 is tightly pressed against the upper sealing ring 224, so that the upper annular periphery of the fuel gas flow through valve core seat 3 is fixedly connected with the cavity mouth wall periphery of the valve core cavity 22 in a sealing manner.

The purpose of the upper annular wall step 223 is to facilitate positioning of the fuel gas flow through valve core seat 3 after being installed in the valve core cavity 22, and the upper seal ring 224 is easy to install and position, and the upper annular periphery of the fuel gas flow through valve core seat 3 is pressed against the upper seal ring 224, so that the upper annular periphery of the fuel gas flow through valve core seat 3 and the cavity mouth annular wall of the valve core cavity 22 are easy to seal, and the sealing effect is good. The robot assembly gas flow valve core seat 3 and the upper sealing ring 224 which are convenient for automatic production are positioned.

The top edge of the gas flow through valve core seat 3 is provided with a surrounding sealing groove 32, and the circumferential edge of the magnet separation flexible elastic sheet 4A is embedded into the surrounding sealing groove 32 along the ring body

The surrounding sealing groove 32 provides positioning for installing the magnet separation flexible elastic sheet 4A, the periphery of the magnet separation flexible elastic sheet 4A falls into the surrounding sealing groove 32 along the ring body to finish the installation positioning, thereby being convenient for the assembly positioning of robots in automatic production, improving the assembly efficiency and preventing mistakes or poor positioning; meanwhile, the up-and-down movement pulling and anti-falling performance of the magnet separation flexible elastic sheet 4A is better, and the magnet separation flexible elastic sheet 4A is prevented from possibly falling off.

The bottom of the fuel gas flow through valve core seat 3 is provided with a fuel gas flow through hole 31; a gas circulation cavity 3A1 is formed in the gas flow through valve core seat 3, the gas circulation cavity 3A1 provides space for installing a movable core rod 4C3 and gas circulation, the top of the gas circulation cavity 3A1 is provided with a valve core seat cavity opening, a magnet separation flexible elastic sheet 4A seals the top cavity opening of the gas circulation cavity 3A1, and the valve core seat cavity opening also provides space for the magnet separation flexible elastic sheet 4A to move up and down; the outer side wall of the gas flow through valve core seat 3 is provided with a gas flow surrounding groove 3A2, the gas flow surrounding groove 3A2 is horizontally and correspondingly communicated with the gas inlet hole 23, the gas flow surrounding groove 3A2 is used for being in butt joint communication with the gas inlet hole 23 to provide a more spacious gas flow channel 3A and adjust balanced gas flow pressure, the inner concave wall of the gas flow surrounding groove 3A2 is provided with a gas inlet hole 3A3, two gas inlet holes 3A3 can be arranged, and the gas flow surrounding groove 3A2, the gas inlet hole 3A3 and a gas flow cavity 3A1 form the gas flow channel 3A; the gas inlet hole 23, the gas circulation surrounding groove 3A2, the gas inlet hole 3A3, the gas circulation cavity 3A1, the gas flow hole 31 and the gas outlet hole 24 are communicated. After entering from the gas inlet hole 23, the gas flows through the gas circulation surrounding groove 3A2, the gas inlet hole 3A3 and the gas circulation cavity 3A1, and then only flows through the gas flow hole 31 and then flows to the gas outlet hole 24; the gas leakage between the bottom circumference of the gas flow valve core seat 3 and the lower circumference of the valve core cavity 22 is prevented, and the gas proportion adjustment is influenced; the gas flow chamber 3A1 can adjust the gas flow pressure balance, and the gas flowing into the gas flow chamber 3A1 can pass through the gas flow hole 31 in a relatively balanced manner.

The bottom circumferential bottom wall edge of the electromagnetic generating device 1 is screwed on the top of the valve seat 2 through a screw assembly, the bottom ring Zhou Debi of the electromagnetic generating device 1 is simultaneously pressed on the circumferential edge of the magnet separation flexible elastic sheet 4A along the ring body and the circumferential edge of the gas flow through valve core seat 3 along the top, the electromagnetic generating device 1 can press and fix the gas flow through valve core seat 3, and the gas flow through valve core seat 3 simultaneously transmits pressure to the upper sealing ring 224 and the lower sealing ring 222, so that the upper circumferential edge of the gas flow through valve core seat 3 is sealed with the cavity opening circumferential wall of the valve core cavity 22, and the bottom circumferential edge of the gas flow through valve core seat 3 is sealed with the lower circumferential wall of the valve core cavity 22; thus, the magnet-partitioning flexible elastic sheet 4A seals the component mounting port 21, and finally seals the entire component mounting port 21, and the purpose of the sealing component mounting port 21 is to prevent gas leakage. The gas flow valve core seat 3 and the magnet separation flexible elastic sheet 4A are easy to position and install by corresponding coordination of the valve core cavity 22, the steps and the grooves; the detachable (separable) fuel gas flow through valve core seat 3 is provided for the purpose of facilitating the loading of the integrated valve core device assembly into the valve core cavity 22 by an automated robot; the detachable fuel gas flow valve core seat 3 is arranged, so that the elastic magnetic control valve core device 4 and the fuel gas flow valve core seat 3 are conveniently preassembled by adopting an automatic production line to form an integrated valve core device assembly;

The magnetic field of the central magnet 4B is the same as the magnetic field generated by energizing the electromagnetic generating device 1, and the electromagnetic generating device 1 is fixedly arranged, so that the elastic magnetic control valve core device 4 is repelled to move;

normally, the electromagnetic generating device 1 is not electrified, the reset spring 4C1 jacks up the rubber plug 4C2 through the self elastic reset property, the magnetic force of the center magnet 4B and the iron metal magnetic attraction of the electromagnetic generating device 1 pull the magnet lock core rod 4C4 and the movable core rod 4C3 to be lifted, and therefore the rubber plug 4C2 closes the fuel gas flowing through the hole 31; the gas proportion adjustment working principle of the product is as follows: utilizes the principle of homopolar repulsion and heteropolar attraction of magnetic fields. After the electromagnetic generating device 1 is electrified to generate a magnetic field, the central magnet 4B obtains a magnetic field (magnetic force) with the same polarity as the electromagnetic generating device 1, so that the electromagnetic generating device 1 is electrified to generate the magnetic field to control the central magnet 4B to move up and down; the center magnet 4B moves up and down (moves) synchronously to drive the movable core bar 4C3 to move up and down (move), and the movable core bar 4C3 moves up and down (moves) to drive the rubber plug 4C2 to move up and down, and the gap size of the gas flow through hole 31 is adjusted through the rubber plug 4C2, so that the gas flow rate is adjusted, and the gas flow proportion is adjusted.

The larger the power-on amount of the electromagnetic generating device 1 is, the larger the generated magnetic field amount is, the larger the magnetic field repulsive force is, the more the center magnet 4B is far away from the electromagnetic generating device 1, the larger the gaps between the center magnet 4B, the magnet lock core rod 4C4 and the movable core rod 4C3, which are pushed down to enable the rubber plug 4C2 to open the fuel gas flow through the holes 31, are, and the larger the fuel gas flow flux is; conversely, the smaller the energization amount of the electromagnetic generating device 1, the smaller the generated magnetic field amount, the smaller the magnetic field repulsive force, the magnetic force of the center magnet 4B attracts the ferrous metal of the electromagnetic generating device 1 and the return spring 4C1 to always jack up the rubber stopper 4C2 and the plunger rod 4C3 by self-rebound property, the rubber stopper 4C2 is lifted up, the closer the center magnet 4B is to the electromagnetic generating device 1, the more the center magnet 4B, the magnet plunger rod 4C4, the plunger rod 4C3 and the rubber stopper 4C2 are lifted up as a whole, and the smaller the gap in which the rubber stopper 4C2 opens the gas flow hole 31 is, the smaller the gas flow amount is.

Claims

1. The fuel gas proportional valve comprises an electromagnetic generating device and a valve seat, wherein the electromagnetic generating device is used for generating magnetic force by electrifying, a component mounting port is formed in the top of the valve seat, a valve core cavity is formed in the valve seat, a fuel gas inlet hole is formed in the upper side wall of the valve core cavity, and a fuel gas outlet hole is formed in the bottom of the valve seat; the top fixed connection of electromagnetism generating device and disk seat seals the part installation mouth, and electromagnetism generating device sets up at the part installation mouth between two parties, its characterized in that: the valve core cavity is internally provided with a fuel gas flow valve core seat and an elastic magnetic control valve core device which can be assembled in a separating way;

2. A gas proportioning valve as set forth in claim 1 wherein: the elastic magnetic control valve core device comprises a magnet separation flexible elastic sheet, a center magnet and an intermediate elastic valve plug device;

the peripheral edge of the magnet separation flexible elastic sheet is clamped between the electromagnetic generating device and the fuel gas flow valve core seat, and the magnet separation flexible elastic sheet seals the part mounting opening; a magnet movement sealing cavity is formed between the magnet separation flexible elastic sheet and the inner bottom of the electromagnetic generating device, the magnet movement sealing cavity provides a space for the magnet separation flexible elastic sheet and the up-and-down movement of a center magnet, the center magnet is fixed in the middle of the top of the magnet separation flexible elastic sheet, the center magnet is arranged in the magnet movement sealing cavity, the top of the middle elastic valve plug device is fixedly connected with the middle of the magnet separation flexible elastic sheet, and the middle elastic valve plug device is movably connected in a penetrating manner in a gas flow hole in a penetrating manner;

The electromagnetic generating device is used for controlling the central magnet to move up and down through the magnetic force of the electromagnetic generating device, and the central magnet synchronously drives the middle elastic valve plug device to move up and down to adjust the gap size of the gas flowing through the hole.

3. A gas proportioning valve as set forth in claim 1 wherein: the middle elastic valve plug device at least comprises a return spring, a rubber plug and a movable core rod, wherein the diameter of the rubber plug is larger than that of a fuel gas flowing hole, the return spring is propped between the rubber plug and the bottom of a valve core cavity, the rubber plug is arranged at an orifice below the fuel gas flowing hole, the lower section of the movable core rod is connected with the fuel gas flowing hole in a penetrating way, the lower end of the movable core rod is fixedly connected with the rubber plug, and the upper end of the movable core rod is fixedly connected with the middle of a magnet separation flexible elastic sheet; the reset spring always jacks up the rubber plug and the movable core rod through self rebound property, and the movable core rod jacks up the magnet separation flexible elastic sheet; when the central magnet moves up and down, the movable core rod is synchronously driven to move up and down so that the rubber plug adjusts the gap size of the gas flowing through the hole to adjust the gas flow.

4. A gas proportioning valve as set forth in claim 3 wherein: the middle elastic valve plug device also comprises a magnet lock core rod for fixing the center magnet; the central magnet is a central magnetic ring; a core penetrating hole is formed in the middle of the magnet separation flexible elastic sheet, and a thickened wall ring extends along the reverse surface hole of the core penetrating hole; the top of the movable core rod is provided with a concave hole, a thickened wall ring is inserted into the concave hole, a central magnetic ring is fixed in the middle of the top of the magnet separation flexible elastic sheet, and a magnet lock core rod is connected with the central magnetic ring in a penetrating way, a core penetrating hole and the center of the concave hole in a fixed and sealed way.

5. A gas proportioning valve as set forth in claim 2 wherein: the inner bottom of the electromagnetic generating device is provided with a concave cavity; the peripheral edge of the magnet separating flexible elastic sheet is clamped between the electromagnetic generating device and the fuel gas flow valve core seat, so that the concave cavity is changed into a magnet movement sealing cavity.

6. A gas proportioning valve as set forth in claim 2 wherein: the top edge of the fuel gas flow through valve core seat is provided with a surrounding sealing groove, the periphery of the magnet separating flexible elastic sheet is embedded into the surrounding sealing groove along the ring body, and the periphery of the ring separating flexible elastic sheet is sealed along the ring body by the inner bottom compacting magnet of the electromagnetic generating device.

7. A gas proportioning valve as set forth in claim 1 wherein: the wall body of the gas flow through valve core seat is provided with a gas flow channel, a gas inlet hole, the gas flow channel, a gas flow hole and a gas outlet hole are communicated, and gas enters the gas flow channel from the gas inlet hole and then only flows through the gas flow hole and then reaches the gas outlet hole.

8. The fuel gas proportional valve according to any one of claims 1 to 7, wherein a lower annular wall step is formed in a lower wall body of the valve core cavity, a lower sealing ring is inlaid on the lower annular wall step, and the lower sealing ring is tightly pressed by the peripheral edge of the bottom of the fuel gas circulation valve core seat, so that the bottom periphery of the fuel gas circulation valve core seat is fixedly connected with the peripheral wall of the lower part of the valve core cavity in a sealing manner.

9. A gas proportioning valve as set forth in any one of claims 1-7 wherein: an upper annular wall step is formed in the upper wall body of the valve core cavity, an upper sealing ring is inlaid on the upper annular wall step, and the upper annular periphery of the fuel gas flow valve core seat is tightly pressed against the upper sealing ring, so that the upper annular periphery of the fuel gas flow valve core seat is fixedly connected with the annular periphery of the cavity opening wall of the valve core cavity in a sealing manner.

10. A gas proportioning valve as set forth in any one of claims 1-7 wherein: a fuel gas circulation cavity is formed in the fuel gas circulation valve core seat; the outer side wall of the fuel gas flow through valve core seat is provided with a fuel gas circulation surrounding groove, the fuel gas circulation surrounding groove is horizontally and correspondingly communicated with the fuel gas inlet hole, the inner concave wall of the fuel gas circulation surrounding groove is provided with a fuel gas inlet hole, and the fuel gas circulation surrounding groove, the fuel gas inlet hole and the fuel gas circulation cavity form a fuel gas flow channel; the gas inlet hole, the gas circulation surrounding groove, the gas inlet hole, the gas circulation cavity, the gas flow hole and the gas outlet hole are communicated.