CN219639603U

CN219639603U - Gas proportional valve

Info

Publication number: CN219639603U
Application number: CN202320082781.8U
Authority: CN
Inventors: 谢喜; 朱晓伟; 陈龙
Original assignee: JIANGYIN LINGE TECHNOLOGY CO LTD
Current assignee: JIANGYIN LINGE TECHNOLOGY CO LTD
Priority date: 2023-01-28
Filing date: 2023-01-28
Publication date: 2023-09-05
Anticipated expiration: 2033-01-28

Abstract

The utility model relates to a gas proportional valve, which comprises a valve body arranged on a valve seat (1), wherein a static iron core (5) and a movable iron core (6) are arranged in the valve body, an air inlet hole (1.2) communicated with a valve cavity (1.1) is arranged on the bottom surface of the valve seat (1), the bottom of a valve rod (6.1) of the movable iron core (6) is positioned in the cavity (1.1), and a sealing gasket (6.2) is sleeved on the valve rod (6.1) and then is vertically pressed downwards on the air inlet hole (1.2). The gas proportional valve has the advantages of quick response and long service life.

Description

Gas proportional valve

Technical Field

The utility model relates to a proportional valve, in particular to a valve for controlling gases such as hydrogen and the like, and belongs to the technical field of electromagnetic valves.

Background

Currently, valves are required for fluid control, such as chinese patent CN202021041562.8, "a proportional control valve", and CN202121330083.2, "a proportional pressure reducing valve", developed and filed by the present company. However, when the patent is applied to the oil liquid control occasion, the valve rod is in sliding contact with the air inlet hole, so that the situation of loose sealing during closing exists, and the use safety of the valve rod is affected; in addition, for the gas control occasions such as a hydrogen proportional valve applied to a hydrogen fuel cell, compared with oil liquid control, the volume of the gas can generate great fluctuation along with the temperature fluctuation, so that the control and the adjustment of the proportional valve applied to the gas occasions are very frequent, and the movable iron core and the static iron core are in frequent contact collision in the frequent adjustment process of the proportional pressure reducing valve structure, so that two problems are caused: (1) the contact surface of the movable iron core and the static iron core is deformed due to the contact, so that the service life of the movable iron core is influenced; (2) because the volume change is extremely sensitive in the gas control process, the proportional valve is required to have a faster response capability, but after the conventional movable iron core and the conventional static iron core are in collision contact, the contact surfaces can be attached together under the action of pressure and can be separated after a certain delay time, so that the quick response capability is influenced, and the popularization of the proportional valve in a gas application scene is seriously influenced by the defect.

In view of the foregoing, there is a need for a proportional valve for use in a gaseous environment that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to overcome the defects and provide the gas proportional valve which has the advantages of quick response and long service life.

The purpose of the utility model is realized in the following way:

the utility model provides a gaseous proportional valve, includes the valve body of installing on the disk seat, is provided with quiet iron core and movable iron core in the valve body, is provided with the inlet port that communicates with the valve pocket on the bottom surface of disk seat, and the valve rod bottom of movable iron core is located the valve pocket, and vertical downward pressfitting is on the inlet port behind the sealing pad on the valve rod suit.

Preferably, an air inlet lip is formed at one end of the air inlet hole, which is positioned in the valve cavity, in a protruding mode, and the sealing gasket is pressed on the air inlet lip.

Preferably, a spring is arranged between the static iron core and the movable iron core.

Preferably, the top of the movable iron core is vertically inserted with a push rod, the top of the through hole of the static iron core is inserted with a locking piece, the top of the push rod is slidably inserted into a guide counter bore of the locking piece, the spring is sleeved on the push rod, the upper part of the spring is positioned in the through hole of the static iron core, the top of the spring is contacted with the locking piece, and the bottom of the spring is contacted with the top of the movable iron core.

Preferably, a spring seat is provided at the top of the movable iron core, and the bottom of the spring is embedded into the spring seat.

Preferably, the coil assembly comprises a coil frame, a coil winding is wound on the coil frame, a plurality of silicon steel sheets are stacked at the top and the bottom of the coil frame, the silicon steel sheets positioned above and the silicon steel sheets positioned below are connected through connecting sheets, the coil frame, the coil winding, the silicon steel sheets and the connecting sheets are molded to form an injection molding shell, and wiring needle legs of the coil winding penetrate through the injection molding shell to form an inserting port.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the dynamic and static iron cores can be rapidly separated by the elasticity of the spring, so that the response rate is improved; meanwhile, the area of the contact surface between the movable iron core and the fixed iron core is reduced due to the existence of the spring seat, and the attaching area of the movable iron core and the fixed iron core is reduced when the movable iron core and the fixed iron core are attached, so that attaching force is reduced, and response speed is improved more favorably. In addition, because the spring seat is adopted, the movable iron core is not in direct contact with the static iron core, and at the moment, the spring seat can be made of the same hard alloy material as the static iron core (the material strength of the movable iron core is generally lower than that of the static iron core), so that the deformation probability is reduced, and the service life is prolonged; finally, the spring seat can be positioned, maintained and replaced, so that the service life of the spring seat is prolonged.

Drawings

FIG. 1 is a schematic diagram of a gas proportional valve according to the present utility model.

Fig. 2 is an enlarged view of a portion of fig. 1 according to the present utility model.

Fig. 3 is an enlarged view of a portion of the utility model at B of fig. 1.

Fig. 4 is a schematic structural view of a coil assembly according to the present utility model.

Fig. 5 is a schematic view of an external structure of a coil assembly according to the present utility model.

Wherein:

valve seat 1, locking seat 2, sleeve 3, coil assembly 4, static iron core 5, movable iron core 6, spring seat 7, push rod 8, spring 9, locking piece 10, bearing 11;

the valve cavity 1.1, the air inlet hole 1.2, the air outlet hole 1.3 and the air inlet lip 1.4;

coil frame 4.1, coil winding 4.2, wiring stitch 4.3, silicon steel sheet 4.4, connecting piece 4.5, injection molding shell 4.6;

perforating 5.1;

valve rod 6.1, sealing gasket 6.2, and mounting counter bore 6.3;

lock nut 10.1, elastic gasket 10.2, sealing washer 10.3, guiding counter bore 10.4, exhaust hole 10.5.

Description of the embodiments

Referring to fig. 1-3, the gas proportional valve comprises a valve seat 1, a valve body is rotatably arranged on a valve cavity 1.1 of the valve seat 1 through a locking seat 2, an air inlet hole 1.2 is arranged on the valve seat 1, the air inlet hole 1.2 is communicated with the valve cavity 1.1, an air inlet lip 1.4 is formed by protruding one end of the air inlet hole 1.2, which is positioned in the valve cavity 1.1, a plurality of air outlet holes 1.3 are arranged on the valve seat 1 around the air inlet hole 1.2, and the air outlet holes 1.3 are also communicated with the valve cavity 1.1.

The valve body comprises a sleeve 3 with isolation and guiding functions in the middle, a movable iron core 6 is arranged in the sleeve 3 in a sliding mode, a static iron core 5 is arranged at the top of the sleeve 3, a coil assembly 4 is sleeved outside the sleeve 3 and the static iron core 5, and the coil assembly 4 and the static iron core 5, the sleeve 3 and the locking seat 2 form an integral structure in an injection molding mode, so that the valve seat 1 is conveniently arranged in a rotating mode.

The valve rod 6.1 is formed at the bottom of the movable iron core 6 in a protruding mode, the sealing gasket 6.2 is nested at the bottom of the valve rod 6.1, and along with the movement of the movable iron core 6, the valve rod 6.1 on the movable iron core 6 is pressed on the air inlet lip 1.4 of the air inlet hole 1.2 with the sealing gasket 6.2, so that the sliding fit mode of the original valve rod and the air inlet hole is changed, and the sealing effect is greatly improved by adopting a front sealing mode.

Meanwhile, the top of the movable iron core 6 is provided with a mounting counter bore 6.3, the bottom of a vertically arranged push rod 8 is fixedly embedded in the mounting counter bore 6.3, the push rod 8 is positioned in a through hole 5.1 of the static iron core 5, the top of the push rod 8 is slidably arranged in a guiding counter bore 10.4 of a locking piece 10, and the locking piece 10 is arranged at the top of the through hole 5.1 of the static iron core 5; simultaneously, a spring holder 7 is installed at the top of moving iron core 6, and spring 9 suit is on push rod 8, and the top of spring 9 contacts with retaining member 10, and the bottom of spring 9 contacts with spring holder 7, makes moving iron core 6 and quiet iron core 5 can quick analysis through spring 9, avoids laminating the back because of pressure bonding together. Further, the side wall of the locking member 10 is provided with an air vent 10.5, and the air vent 10.5 is communicated with the guiding counter bore 10.4, so that when the push rod 8 slides in the guiding counter bore 10.4, sliding cannot be affected due to air resistance, and then response curves of the push rod 8 are affected.

Preferably, referring to fig. 4 and 5, the coil assembly 4 includes a coil frame 4.1, a coil winding 4.2 is wound on the coil frame 4.1, a wire connection pin 4.3 is led out laterally, a plurality of silicon steel sheets 4.4 are stacked on the top and bottom of the coil frame 4.1, a through hole penetrating through a central hole of the coil frame 4.1 is formed in the center of the silicon steel sheets 4.4, the silicon steel sheets 4.4 located above and the silicon steel sheets 4.4 located below are connected through a connecting sheet 4.5, meanwhile, the coil frame 4.1, the coil winding 4.2, the silicon steel sheets 4.4 and the connecting sheet 4.5 are injection molded to form an injection molding shell 4.6 with an integral plastic package structure, and the wire connection pin 4.3 penetrates out of the injection molding shell 4.6 to form an inserting port.

Preferably, the perforation 5.1 of the static iron core 5 is a step hole, and the top of the movable iron core 6 is provided with a boss which is inserted into the large aperture end of the step hole in a sliding way, and the spring seat 7 is arranged on the top surface of the boss of the movable iron core 6. Further, the spring seat 7 is of an annular structure, the push rod 8 is inserted into the central annular hole, the inner edge of the spring seat 7 of the annular structure is provided with a positioning protrusion embedded into the annular positioning notch on the top surface of the boss downwards, and the outer edge of the spring seat 7 of the annular structure is provided with a contact ring in contact with the step surface of the through hole 5.1 of the static iron core 5 in an upward protruding mode.

Preferably, the locking member 10 is sleeved with an elastic gasket 10.2 and a sealing gasket 10.3, the elastic gasket 10.2 and the sealing gasket 10.3 are located in a stepped hole at the top of the coil assembly 4, and then a locking nut 10.1 is screwed at the top of the locking member 10 to achieve the locking and sealing effects.

In addition: it should be noted that the above embodiment is only one of the optimization schemes of this patent, and any modification or improvement made by those skilled in the art according to the above concepts is within the scope of this patent.

Claims

1. The utility model provides a gas proportional valve, includes the valve body of installing on disk seat (1), is provided with quiet iron core (5) and movable iron core (6) in the valve body, its characterized in that: an air inlet hole (1.2) communicated with the valve cavity (1.1) is formed in the bottom surface of the valve seat (1), the bottom of a valve rod (6.1) of the movable iron core (6) is positioned in the valve cavity (1.1), and a sealing gasket (6.2) is sleeved on the valve rod (6.1) and then vertically pressed down on the air inlet hole (1.2);

one end of the air inlet hole (1.2) positioned in the valve cavity (1.1) is provided with an air inlet lip (1.4) in a protruding mode, and the sealing gasket (6.2) is pressed on the air inlet lip (1.4); a spring (9) is arranged between the static iron core (5) and the movable iron core (6); push rod (8) has been pegged graft vertically at movable iron core (6) top, peg graft at fixed iron core (5) perforation (5.1) top has a retaining member (10), in guide counter bore (10.4) of retaining member (10) are slided at push rod (8) top, spring (9) suit is on push rod (8), and the upper portion of spring (9) is located fixed iron core (5) perforation (5.1), the top and the retaining member (10) of this spring (9) contact, the bottom and the top of movable iron core (6) of spring (9) contact.

2. A gas proportioning valve as set forth in claim 1 wherein: the top of the movable iron core (6) is provided with a spring seat (7), and the bottom of the spring (9) is embedded into the spring seat (7).

3. A gas proportioning valve as set forth in claim 1 wherein: coil pack (4) suit is in the outside of sleeve pipe (3) and quiet iron core (5), coil pack (4) are including coil former (4.1), coil winding (4.2) twine on coil former (4.1), multi-disc silicon steel sheet (4.4) pile up at the top and the bottom of coil former (4.1), be connected through connection piece (4.5) between silicon steel sheet (4.4) that are located the top and silicon steel sheet (4.4) that are located the below, above-mentioned coil former (4.1), coil winding (4.2), silicon steel sheet (4.4) and connection piece (4.5) mould plastics and form injection molding shell (4.6), wiring stitch (4.3) of coil winding (4.2) wear out injection molding shell (4.6) and form the interface.