Shaft type direct-acting electromagnetic valve

Abstract

The utility model discloses a shaft type direct-acting electromagnetic valve which comprises a valve body shell, a valve cavity is formed in the valve body shell, an inlet and an outlet are formed in the two ends of the valve cavity, an inlet end cover and an outlet end cover are installed at the inlet and the outlet respectively, a static iron core is installed in the valve cavity, a coil is arranged on the static iron core in a sleeved mode, and the coil is connected with a wiring terminal. The wiring terminal is installed in the anti-explosion cavity through the wiring terminal support, the anti-explosion cavity is connected with the valve body shell, the movable iron core is arranged on one side of the static iron core, the medium pipeline is connected to the inner side of the movable iron core, the movable iron core can drive the medium pipeline to move back and forth in the valve cavity, and the spring is installed between the movable iron core and the static iron core. And an outlet plugging and sealing assembly is mounted in the outlet end cover. The electromagnetic valve is compact in structure, the medium pipeline is controlled to linearly move in the valve cavity through the movable iron core and the static iron core, and opening or closing of the valve is controlled and high-speed response is achieved through cooperation of the medium pipeline and the plug.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to an axial direct-acting electromagnetic valve. Background Art

[0002] Solenoid valves are electromagnetically controlled devices. They are basic automation components used to control fluids and are actuators. They are often used in industrial automation, medical, chemical, shipbuilding, offshore platforms and other fields. Their main function is to adjust or control the direction, flow, speed and other related parameters of the medium. Solenoid valves can be used with different control circuits to achieve the desired control, and to achieve and ensure the accuracy and flexibility of control. There are many types of solenoid valves, the most commonly used are check valves, safety valves, directional control valves, speed regulating valves, etc. Many existing solenoid valves have complex structures, and the local pressure loss and pressure loss along the valve are serious, which greatly reduces the performance of the solenoid valve, affects the requirements of the production process, and also limits the improvement of production efficiency and product quality. Utility Model Content

[0003] The purpose of the utility model is to provide an axial direct-acting solenoid valve to solve the problems mentioned in the background technology. To achieve the above purpose, the utility model provides the following technical solutions: an axial direct-acting solenoid valve, including a valve body shell, a valve cavity is provided inside the valve body shell, an inlet and an outlet are opened at both ends of the valve cavity, an inlet end cover and an outlet end cover are installed at the inlet and the outlet respectively, a static iron core is installed inside the valve cavity, a coil is sleeved on the static iron core, the coil is connected to the wiring terminal, the wiring terminal is installed inside the explosion-proof cavity through the wiring terminal bracket, the explosion-proof cavity is connected to the valve body shell, a moving iron core is provided on one side of the static iron core, the inner side of the moving iron core is connected to the medium pipeline, the moving iron core can drive the medium pipeline to move back and forth inside the valve cavity, a spring is installed between the moving iron core and the static iron core, an outlet plugging sealing assembly is installed inside the outlet end cover, and the outlet plugging sealing assembly corresponds to the position of the medium pipeline.

[0004] Preferably, the outlet plugging and sealing assembly includes a plugging block, which is installed inside the outlet end cover. An installation groove is opened in the middle of the inner side of the plugging block, and a plug is installed inside the installation groove. The plug corresponds to one end of the medium pipeline, and the plugging block has multiple outlet channels along the circumference.

[0005] Preferably, an inlet main seal and an outlet main seal are respectively installed on the inner sides of the inlet end cover and the outlet end cover, the inlet main seal is located between the inlet end cover and the static iron core, the outlet main seal is located between the outlet end cover and the moving iron core, and a sliding seal is formed between the medium pipeline and the inlet main seal and the outlet main seal.

[0006] Preferably, a bushing is installed between the static iron core and the coil, and the moving iron core is located inside the bushing.

[0007] Preferably, an explosion-proof end cover is installed on the top of the explosion-proof cavity, and an electrical interface is opened on one side of the explosion-proof cavity.

[0008] Preferably, an internal grounding terminal is installed on the terminal bracket, and an external grounding terminal is installed on the explosion-proof cavity.

[0009] The technical effects and advantages of the utility model are as follows: the solenoid valve has a compact structure, and controls the medium pipeline to move linearly inside the valve cavity through the moving iron core and the static iron core, and controls the opening or closing of the valve through the cooperation of the medium pipeline and the plug to achieve high-speed response; the medium passes through in a straight line, with a fast flow rate, no detours, a small pressure drop, and improved efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0011] Figure 2 It is the front view of the utility model;

[0012] Figure 3 It is a top view of the utility model.

[0013] In the figure, 1. valve body shell; 2. valve cavity; 3. inlet end cover; 4. outlet end cover; 5. static iron core; 6. coil; 7. terminal; 8. terminal bracket; 9. explosion-proof cavity; 10. explosion-proof end cover; 11. electrical interface; 12. moving iron core; 13. medium pipeline; 14. spring; 15. sealing block; 16. plug; 17. outlet channel; 18. inlet main seal; 19. outlet main seal; 20. bushing; 21. internal grounding terminal; 22. external grounding terminal. DETAILED DESCRIPTION

[0014] In order to make the technical means for realizing the utility model, creative features, objectives and effects easy to understand, the utility model is further explained below in conjunction with specific diagrams. In the description of the utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two components.

[0015] Example

[0016] like Figure 1-Figure 3The axial direct-acting solenoid valve shown in the figure comprises a valve body shell 1, a valve cavity 2 is arranged inside the valve body shell 1, an inlet and an outlet are opened at both ends of the valve cavity 2, an inlet end cover 3 and an outlet end cover 4 are respectively installed at the inlet and the outlet, and the entire solenoid valve is conveniently installed on the pipeline through the inlet end cover 3 and the outlet end cover 4; a static iron core 5 is installed inside the valve cavity 2, a coil 6 is sleeved on the static iron core 5, the coil 6 is connected to the wiring terminal 7, the wiring terminal 7 is installed in the explosion-proof cavity 9 through the wiring terminal bracket 8, the explosion-proof cavity 9 is connected to the valve body shell 1, and an explosion-proof end cover 10 is installed on the top of the explosion-proof cavity 9, and the explosion-proof end cover 10 can prevent foreign matter from entering the explosion-proof cavity The explosion-proof cavity 9 has an electrical interface 11 on one side, through which the terminal 7 can be connected to the external electrical circuit, so as to realize the power-on control of the solenoid valve; a moving iron core 12 is provided on one side of the static iron core 5, and the inner side of the moving iron core 12 is connected to the medium pipeline 13, and the moving iron core 12 can drive the medium pipeline 13 to move back and forth inside the valve cavity 2, and a spring 14 is installed between the moving iron core 12 and the static iron core 5, and an outlet plugging sealing assembly is installed inside the outlet end cover 4, and the outlet plugging sealing assembly corresponds to the position of the medium pipeline 13, and the outlet plugging sealing assembly can realize the conduction and shutoff of one end of the medium pipeline 13.

[0017] Among them, the outlet plugging sealing assembly includes a plugging block 15, which is installed inside the outlet end cover 4. An installation groove is opened in the middle of the inner side of the plugging block 15, and a plug 16 is installed inside the installation groove. The plug 16 is a rubber plug. The plug 16 corresponds to one end of the medium pipeline 13. The plugging block 15 has multiple outlet channels 17 along the circumference. When the plug 16 is separated from one end of the medium pipeline 13, the medium can flow in from the inlet and flow out from the outlet channel 17 after passing through the medium pipeline 13.

[0018] Among them, the inlet main seal 18 and the outlet main seal 19 are respectively installed on the inner side of the inlet end cover 3 and the outlet end cover 4. The inlet main seal 18 is located between the inlet end cover 3 and the static iron core 5, and the outlet main seal 19 is located between the outlet end cover 4 and the moving iron core 12. The medium pipeline 13 is slidingly sealed with the inlet main seal 18 and the outlet main seal 19. The inlet main seal 18 and the outlet main seal 19 can prevent the medium from penetrating into the static iron core 5 and the coil 6 to avoid damage to the circuit.

[0019] Among them, a bushing 20 is installed between the static iron core 5 and the coil 6. The bushing 20 is a stainless steel bushing. The moving iron core 12 is located inside the bushing 20. The bushing 20 can prevent contact between the coil 6 and the moving iron core 12, which is beneficial to the forward and backward movement of the moving iron core 12.

[0020] Among them, an internal grounding terminal 21 is installed on the terminal bracket 8, and an external grounding terminal 22 is installed on the explosion-proof cavity 9. The grounding of the solenoid valve is achieved through the internal grounding terminal 21 and the external grounding terminal 22, which can prevent the risk of electric shock caused by leakage.

[0021] The process flow and working principle of the utility model are as follows: when the solenoid valve is used, it is installed on the pipeline system through the inlet end cover 3 and the outlet end cover 4. When the coil 6 is not energized, under the action of the spring 14, one end of the medium pipeline 13 is blocked by the plug 16, and the medium flowing into the inlet cannot flow out through the medium pipeline 13, and the solenoid valve is in the off state; when the coil 6 is energized, the static iron core 5 absorbs the moving iron core 12, thereby driving the moving iron core 12 and the medium pipeline 13 to move inward, so that one end of the medium pipeline 13 is separated from the plug 16, so that the medium flowing into the inlet flows through the medium pipeline 13 to the outlet channel 17 and flows out, thereby realizing the opening of the solenoid valve.

[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axial direct-acting solenoid valve, comprising a valve body housing, characterized in that: A valve cavity is provided inside the valve body shell, an inlet and an outlet are opened at both ends of the valve cavity, an inlet end cover and an outlet end cover are respectively installed at the inlet and the outlet, a static iron core is installed inside the valve cavity, a coil is sleeved on the static iron core, the coil is connected to a wiring terminal, the wiring terminal is installed inside the explosion-proof cavity through a wiring terminal bracket, the explosion-proof cavity is connected to the valve body shell, a moving iron core is provided on one side of the static iron core, the inner side of the moving iron core is connected to the medium pipeline, the moving iron core can drive the medium pipeline to move back and forth inside the valve cavity, a spring is installed between the moving iron core and the static iron core, an outlet plugging sealing assembly is installed inside the outlet end cover, and the outlet plugging sealing assembly corresponds to the position of the medium pipeline.

2. The shaft-type direct-acting solenoid valve according to claim 1, characterized in that: The outlet plugging and sealing assembly includes a plugging block, which is installed inside the outlet end cover. A mounting groove is opened in the middle of the inner side of the plugging block. A plug is installed inside the mounting groove. The plug corresponds to one end of the medium pipeline. The plugging block has multiple outlet channels along the circumference.

3. The shaft-type direct-acting solenoid valve according to claim 1, characterized in that: An inlet main seal and an outlet main seal are respectively installed on the inner sides of the inlet end cover and the outlet end cover. The inlet main seal is located between the inlet end cover and the static iron core, and the outlet main seal is located between the outlet end cover and the moving iron core. A sliding seal is formed between the medium pipeline and the inlet main seal and the outlet main seal.

4. The shaft-type direct-acting solenoid valve according to claim 1, characterized in that: A bushing is installed between the static iron core and the coil, and the moving iron core is located inside the bushing.

5. The shaft-type direct-acting solenoid valve according to claim 1, characterized in that: An explosion-proof end cover is installed on the top of the explosion-proof cavity, and an electrical interface is opened on one side of the explosion-proof cavity.

6. The shaft-type direct-acting solenoid valve according to claim 1, characterized in that: An internal grounding terminal is installed on the terminal bracket, and an external grounding terminal is installed on the explosion-proof cavity.

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