Solenoid valve

Abstract

The utility model relates to hydraulic equipment, in particular to an electromagnetic valve, which comprises a valve body and a valve core, a coil is arranged on the valve body, the valve core is connected with an armature matched with the coil, the valve body comprises a connecting frame, a valve sleeve is arranged at a first end of the connecting frame, an end seat is arranged at a second end of the connecting frame, and the valve sleeve is connected with the end seat. An outer connecting sleeve and an inner connecting sleeve are arranged between the connecting frame and the end seat, the armature is matched with the inner connecting sleeve, the connecting frame, the valve sleeve and the end seat are arranged, the valve sleeve and the valve element are selected according to flow and pressure parameters, the end seat is selected according to installation and appearance requirements, then connection is conducted through the connecting frame, and the adaptability of the electromagnetic valve is improved.

Description

Technical Field

[0001] This utility model relates to hydraulic equipment, and more particularly to solenoid valves. Background Technology

[0002] Solenoid valves are fundamental automation components used to control fluids. They are mainly used for fluid control and can be used with different circuits to achieve the desired control. They are characterized by safety, convenience, variety of models, and wide application. There are many types of solenoid valves, including check valves, safety valves, directional control valves, and speed regulating valves. These valves play an important role in industrial control systems. The combination of solenoid valve technology with control technology, computer technology, and electronic technology has enabled a variety of complex controls.

[0003] Existing solenoid valves consist of a valve body and a valve core. A coil is installed on the valve body, and an armature that cooperates with the coil is connected to the valve core. The valve core is controlled by the coil, resulting in high control precision. The coil is installed on the valve body, and a valve core mounting hole is machined on the valve body. The inlet and outlet are machined on the side wall of the valve core mounting hole. The structure is simple, but the adaptability is poor. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a solenoid valve that is easy to assemble.

[0005] This utility model is achieved through the following technical solution: a solenoid valve, including a valve body and a valve core, wherein a coil is provided on the valve body, and an armature cooperating with the coil is connected to the valve core. The valve body includes a connecting frame, a valve sleeve is provided at the first end of the connecting frame, and an end seat is provided at the second end of the connecting frame. An outer connecting sleeve and an inner connecting sleeve are provided between the connecting frame and the end seat, and the armature cooperates with the inner connecting sleeve.

[0006] Furthermore, a valve sleeve is provided at the first end of the connecting frame, and the valve sleeve is provided with an inlet and an outlet. A sealing ring 1 and a retaining ring 1 are provided on the first side of the valve sleeve located at the inlet, with the sealing ring 1 located between the retaining ring 1 and the inlet. A sealing ring 2 and a retaining ring 2 are provided on the second side of the valve sleeve located at the inlet, with the sealing ring 2 located between the retaining ring 2 and the inlet.

[0007] Furthermore, the valve sleeve and the connecting frame are connected by threads, and a support sleeve is also provided between the end of the valve sleeve and the connecting frame.

[0008] Furthermore, the valve core has a tapered head at its first end, a plug on the valve sleeve, an outlet at the plug, a tapered groove at the outlet end that mates with the tapered head, a pressure sleeve at the end of the valve sleeve that mates with the plug, the pressure sleeve being threadedly connected to the valve sleeve, and an adjusting shim between the plug and the valve sleeve.

[0009] Furthermore, the first end of the armature is slidably engaged with the connecting frame, and a pressure relief chamber is formed between the armature and the valve sleeve. The pressure relief chamber is connected to the inlet through a pressure relief hole provided on the valve sleeve.

[0010] The beneficial effects of this utility model are as follows: by setting up a connecting frame, valve sleeve, and end seat, selecting the valve sleeve and valve core according to the flow and pressure parameters, selecting the end seat according to the installation and shape requirements, and then connecting them through the connecting frame, the adaptability of the solenoid valve is improved. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of Example 1.

[0012] The components are as follows: 1. Coil; 2. Valve core; 3. Valve sleeve; 4. Plug; 5. Spring; 6. Armature; 7. Adjusting shim; 8. Outlet; 9. End seat; 10. Outer connecting sleeve; 11. Inner connecting sleeve; 12. Inlet; 13. Connecting frame; 14. Conical head; 15. Pressure relief hole; 16. Sealing ring II; 17. Retaining ring II; 18. Sealing ring I; 19. Retaining ring I; 20. Pressure sleeve; 21. Support sleeve. Detailed Implementation

[0013] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0015] Example 1

[0016] like Figure 1As shown, a solenoid valve includes a valve body, which includes a connecting frame 13. A valve sleeve 3 is fitted onto the first end of the connecting frame 13. The valve sleeve 3 is connected to an inlet 12 and an outlet 8. The inlet 12 is located on the side wall of the valve sleeve 3, and the outlet 8 is located at the end of the valve sleeve 3. A sealing ring 18 and a retaining ring 19 are installed on the side of the valve sleeve 3, on the first side near the inlet 12. The sealing ring 18 is located between the retaining ring 19 and the inlet 12. A sealing ring 16 and a retaining ring 17 are installed on the side of the valve sleeve 3, on the second side near the inlet 12. The sealing ring 16 is located between the retaining ring 17 and the inlet 12. Both the sealing ring 18 and the sealing ring 16 are O-rings. Both the retaining ring 19 and the retaining ring 17 are made of polytetrafluoroethylene (PTFE) with a rectangular cross-section. Because PTFE has high structural strength and corrosion resistance, it can cooperate with the O-rings, thereby reducing the deformation of the O-rings and ensuring the sealing effect. The sleeve 3 and the connecting frame 13 are connected by threads to avoid relative displacement when subjected to axial force. The sealing ring 16 and the retaining ring 17 are installed on the connecting frame 13. A support sleeve 21 is also installed between the end of the valve sleeve 3 and the connecting frame 13 to reduce the gap between the valve sleeve 3 and the connecting frame 13 and support the valve sleeve 3. The valve core 2 is installed inside the valve sleeve 3. The valve core 2 and the valve sleeve 3 are sealed by multiple layers of sealing rings distributed at intervals. The first end of the valve core 2 is integrally formed with a conical head 14. A plug 4 is installed on the valve sleeve 3. The plug 4 is machined with an outlet 8. The end of the outlet 8 is machined with a conical groove that matches the conical head 14. A pressure sleeve 20 that matches the plug 4 is also installed at the end of the valve sleeve 3. The pressure sleeve 20 is threadedly connected to the valve sleeve 3. An adjusting shim 7 is also installed between the plug 4 and the valve sleeve 3 to adjust the position of the conical groove and improve the stability of the fit with the conical head 14.

[0017] The second end of the valve core 2 is connected to the armature 6. The first end of the armature 6 is slidably engaged with the connecting frame 13. A pressure relief chamber is formed between the armature 6 and the valve sleeve 3. The pressure relief chamber is connected to the inlet 12 through the pressure relief hole 15 machined on the valve sleeve 3, thereby stabilizing the pressure in the pressure relief chamber during the movement of the armature 6.

[0018] The second end of the connecting frame 13 is connected to the end seat 9, and the coil 1 is installed on the end seat 9. An inner connecting sleeve 11 and an outer connecting sleeve 10 are installed between the end seat 9 and the connecting frame 13. The inner connecting sleeve 11 is made of polytetrafluoroethylene. The first end of the inner connecting sleeve 11 mates with the second end of the armature 6 to form a seal and guide the armature 6. The outer connecting sleeve 10 is installed on the outside of the end seat 9 and the connecting frame 13 to fix the end seat 9 and the connecting frame 13 coaxially. The outer connecting sleeve 10 can also protect the coil 1.

[0019] A spring 5 that cooperates with the armature 6 is also installed on the end seat 9. The spring 5 groove is machined on both the end seat 9 and the armature 6. The spring 5 groove can also form a large air cavity, thereby forming a pressure buffer during the movement of the armature 6. Under normal conditions, the spring 5 makes the valve core 2 cooperate with the plug 4 to form a seal. In the open state, the coil 1 drives the armature 6 to move against the elastic force of the spring 5, and the inlet 12 is connected to the outlet 8.

[0020] The solenoid valve provided in this embodiment includes a connecting frame, a valve sleeve, and an end seat. The valve sleeve and valve core are selected according to flow and pressure parameters, and the end seat shape is selected according to installation and shape requirements. Then, they are connected through the connecting frame to improve the adaptability of the solenoid valve. In some embodiments, the flow rate is detected at the outlet and fed back to the controller. The controller controls the coil current through a digital current controller, thereby controlling the valve core stroke. However, tests have shown that the control accuracy is low and can only meet some application scenarios. Moreover, it is necessary to continuously adjust the coil current. Currently, the flow rate is controlled by selecting the specifications of the valve sleeve and valve core.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solenoid valve, comprising a valve body and a valve core, wherein a coil is disposed on the valve body, and an armature cooperating with the coil is connected to the valve core, characterized in that, The valve body includes a connecting frame, a valve sleeve is provided at the first end of the connecting frame, an end seat is provided at the second end of the connecting frame, an outer connecting sleeve and an inner connecting sleeve are provided between the connecting frame and the end seat, and the armature cooperates with the inner connecting sleeve.

2. The solenoid valve according to claim 1, characterized in that, The first end of the connecting frame is provided with a valve sleeve, which has an inlet and an outlet. On the side of the valve sleeve, on the first side of the inlet, there is a sealing ring 1 and a retaining ring 1, with the sealing ring 1 located between the retaining ring 1 and the inlet. On the side of the valve sleeve, on the second side of the inlet, there is a sealing ring 2 and a retaining ring 2, with the sealing ring 2 located between the retaining ring 2 and the inlet.

3. The solenoid valve according to claim 1, characterized in that, The valve sleeve and the connecting frame are connected by threads, and a support sleeve is also provided between the end of the valve sleeve and the connecting frame.

4. The solenoid valve according to claim 1, characterized in that, The valve core has a tapered head at its first end, a plug on the valve sleeve, an outlet at the plug, a tapered groove at the outlet end that mates with the tapered head, a pressure sleeve at the end of the valve sleeve that mates with the plug, the pressure sleeve being threadedly connected to the valve sleeve, and an adjusting shim between the plug and the valve sleeve.

5. The solenoid valve according to claim 1, characterized in that, The first end of the armature is slidably engaged with the connecting frame, and a pressure relief chamber is formed between the armature and the valve sleeve. The pressure relief chamber is connected to the inlet through a pressure relief hole provided on the valve sleeve.

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