CN207554923U

CN207554923U - A kind of solenoid valve

Info

Publication number: CN207554923U
Application number: CN201720702056.0U
Authority: CN
Inventors: 俞舟; 林元阳; 王文君
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2018-06-29
Anticipated expiration: 2027-06-16

Abstract

The utility model discloses a kind of solenoid valves, including main valve body, piston component, bonnet assemblies, coil assembly, import is set on main valve body, outlet, connect the valve chamber of inlet and outlet, the connector connected with valve chamber, bonnet assemblies include valve deck, the casing that upper end is fixedly connected with the valve deck, valve deck is connect with connector, coil assembly is installed on the outside of valve deck, outlet is connected by valve port with valve chamber, in described sleeve pipe or part is located in casing and is fixed on the attractor of lower end and the core iron part that can be slided in casing, core iron part includes core iron, needle, needle spring and gasket, core iron is surrounded by cavity with needle, the lower part of needle is equipped with gasket, needle spring pocket is on needle and positioned at gasket top, gap is equipped between needle and gasket.The beneficial effects of the utility model are：Realizing pilot valve valve opening overcomes the corresponding core iron gap of difference force to become smaller, and so as to enhance the utilization of electromagnetic force, improves valve opening ability.

Description

A kind of solenoid valve

Technical field

The utility model is related to a kind of valve gear, more particularly to a kind of solenoid valve.

Background technology

Solenoid valve is electromagnetically controlled element, is mainly used for controlling fluid on-off, is usually used in industrial equipment or refrigeration Circuit.For refrigerating circuit, the main break-make for controlling refrigerant according to the difference of system design scheme, can use high pressure air circuit, liquid Push back road or air-breathing circuit.For the difference in circuit, pressure medium and pressure difference difference, but general standard is unified, solenoid valve Available for any one of three kinds of positions, only according to the difference of pipeline size, specification can different from.According to for occasion Difference is divided into normally open solenoid valve and normally closed solenoid valve.According to the difference of action scheme, can be divided into：Direct-acting electromagnetic valve, coaxial elder generation Guide electromagnetic valve and non-coaxial guide electromagnetic valve.Wherein according to the difference of specification size, multistage pilot-operated type electricity can also be designed Magnet valve.

Guide electromagnetic valve, core iron stroke is big, and for normally close valve, difference force is overcome in big stroke, and corresponding at this time Electromagnetic force is minimum, and poor so as to cause valve opening ability, coil electromagnetism suction utilization ratio is not high.Especially DC coil, Coil power, without linear relationship, is steady state value, therefore electromagnetic attraction is particularly evident with the increase attenuation of stroke, not with stroke In the case of changing coil power, the poor direct current normally closed solenoid valve valve opening ability of ordinary construction is common fault in industry.Also have and change Core iron part after can promote valve opening ability, but balance hole is needed to realize pressure balance between core iron part and needle, add Work difficulty is larger, is also easy to produce burr, and structure is not compact enough.

Invention content

The technical problem to be solved by the utility model is to provide one kind can improve direct current normally closed solenoid valve valve opening ability Solenoid valve.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of solenoid valve, including main valve Body, piston component, bonnet assemblies, coil assembly, setting import on the main valve body, outlet, the valve chamber for connecting inlet and outlet, The connector connected with valve chamber, the casing that the bonnet assemblies include valve deck, upper end is fixedly connected with the valve deck, the valve deck It is connect with connector, the coil assembly is installed on the outside of valve deck, and the outlet is connected with valve chamber by valve port, further includes and be located at In described sleeve pipe or part be located in described sleeve pipe and be fixed on described sleeve pipe lower end attractor and can be in described sleeve pipe The core iron part of interior slip.

The core iron part includes core iron, needle, needle spring and gasket, and the core iron is surrounded by cavity, valve with needle The lower part of needle is equipped with gasket, and needle spring pocket is equipped with gap on needle and positioned at gasket top between the needle and gasket.

Gap between the needle and gasket is more than 0.05mm.

The top of the needle and core iron clearance fit.

The gasket peripheral surface is interference fitted with the core iron.

The needle upper diameter is more than lower diameter and upper and lower boundary is formed with boss.

The beneficial effects of the utility model are：Realizing pilot valve valve opening overcomes the corresponding core iron gap of difference force to become smaller, from And enhance the utilization of electromagnetic force, improve valve opening ability.

Description of the drawings

Fig. 1 is the utility model valve opening original state structure diagram；

Fig. 2 is equipped with the core iron part schematic diagram in gap between the utility model needle and needle seat；

Fig. 3 is the utility model valve opening state schematic diagram；

Fig. 4 is the utility model solenoid valve standard-sized sheet schematic diagram；

Fig. 5 is the schematic diagram that the utility model core iron part is arranged on common level-one guide structure.

In figure：

1. 2. casing of attractor, 3. core iron spring, 4. core iron

5. 6. gasket of lantern ring, 7. piston spring, 8. tabletting

11. piston spring of 9.O shapes 10. valve deck of circle, 12. piston

13. 14. gasket of gasket, 15. valve seat, 16. coil component

17 needle, 18. needle spring, 19. gasket, 20. piston

21. 22. piston ring of piston, 23. screw A. needles and gasket gap

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description：

As shown in Figure 1, a kind of solenoid valve, including main valve body, piston component, bonnet assemblies, coil assembly, the main valve body Upper setting import, outlet, the valve chamber for connecting inlet and outlet, the connector that is connected with valve chamber, the bonnet assemblies including valve deck, The casing that upper end is fixedly connected with the valve deck, the valve deck are connect with connector, and the coil assembly is installed on the outside of valve deck, The outlet is connected by valve port with valve chamber, it is characterized in that：It further includes in described sleeve pipe or part is located at described sleeve pipe Attractor that is interior and being fixed on described sleeve pipe lower end and the core iron part that can be slided in described sleeve pipe, core iron part include core Iron 4, needle 17, needle spring 18 and gasket 19, core iron 4 are surrounded by cavity with needle 17, and core iron is oriented to needle to be coordinated, needle The unilateral gap A of more than 0.05mm is stayed between gasket, realizes that core iron is balanced with the chamber pressure that needle is enclosed during the motion, Without the trepanning at core iron, simplify processing technology, improve product reliability.19 peripheral surface of gasket is interference fitted with the core iron 4, One is formed with iron core 4,17 upper diameter of needle is more than lower diameter and upper and lower boundary is formed with boss, 18, needle spring Between boss and gasket 19.

Fig. 2 show valve opening original state, and coil is powered, and core iron 4 overcomes core iron spring force and needle spring force to transport upwards It is dynamic, state shown in Fig. 3 is moved to, core iron 4 is contacted with needle 17 at this time, and core iron part need to overcome difference force and core iron spring force It can move upwards, and for core iron 4 to the size of the gap very little, about pilot valve stroke of attractor, the suction-combining force is long-range at this time In the actuation starting stage, and core iron 4 has larger kinetic energy at this time, it is easy to realize valve opening, valve opening ability is more than conventional junction Structure is outstanding.

Last core iron 4 is attracted completely, and pilot valve has been switched at this time, and needle 17 continues up fortune under the effect of needle spring 18 Upper limit is moved, ensures the aperture of needle 17 after piston upwards, while second piston and first stage piston move upward to Upper limit realizes the standard-sized sheet of valve.State as shown in Figure 4.

Coil blackout when closing valve, core iron 4 drive needle 17 to move downwardly together, close respectively under the action of core iron spring 18 Second piston and first stage piston are closed, realizes the fully closed of valve.

The utility model is not limited to two-stage guide structure, is applicable in the same old way on traditional level-one guide structure, such as Fig. 5 institutes Show, and also have than traditional core iron modular construction more preferably valve opening ability.

Claims

1. a kind of solenoid valve, set including main valve body, piston component, bonnet assemblies, coil assembly, on the main valve body import, Outlet, the valve chamber of connection inlet and outlet, the connector that is connected with valve chamber, the bonnet assemblies including valve deck, upper end with it is described The casing that valve deck is fixedly connected, the valve deck are connect with connector, and the coil assembly is installed on the outside of valve deck, and the outlet is logical Valve port is crossed to connect with valve chamber, it is characterized in that：It further includes in described sleeve pipe or part is in described sleeve pipe and fixed Attractor and the core iron part that can be slided in described sleeve pipe in described sleeve pipe lower end.

2. a kind of solenoid valve according to claim 1, it is characterized in that：The core iron part includes core iron (4), needle (17), needle spring (18) and gasket (19), the core iron (4) are surrounded by cavity with needle (17), and the lower part of needle (17) is set There is gasket (19), needle spring (18) is sleeved on needle (17) and positioned at gasket (19) top, the needle (17) and gasket (19) gap is equipped between.

3. a kind of solenoid valve according to claim 2, it is characterized in that：Gap between the needle (17) and gasket (19) More than 0.05mm.

4. a kind of solenoid valve according to claim 2, it is characterized in that：The top of the needle (17) and core iron (4) gap Cooperation.

5. a kind of solenoid valve according to claim 2, it is characterized in that：Gasket (19) peripheral surface and the core iron (4) Interference fit.

6. a kind of solenoid valve according to claim 2, it is characterized in that：Needle (17) upper diameter is more than lower diameter And boundary is formed with boss up and down.