Assembly type electromagnetic valve

Abstract

A valve seat is connected to the top end inside an upper cover of a valve body through threads, a coil is connected to the outer side of a sleeve in a sleeved mode, a static valve element is installed at the top end inside the sleeve in a sliding mode, a main spring is embedded in the middle of the top face of the static valve element, a movable valve element is installed at the bottom end inside the sleeve in a sliding mode, and an auxiliary spring is embedded in the top end of the movable valve element. The movable valve element and the static valve element are controlled by double springs, the electromagnetic valve is provided with a first working combination point and a second working combination point, the first combination point is abutted through a shorter gap between the movable valve element and the static valve element, and the second combination point is abutted through a lower gap between the movable valve element and the static valve element. The second combination point pushes the sealing assembly through system pressure after abutting through the first combination point, the supporting rod pushes the movable valve element and the static valve element which are in abutting connection to complete abutting of the second combination point, the stroke distance of the first combination point is short, needed electromagnetic force can be reduced, and therefore the size of an electromagnetic coil and the use amount of the coil can be effectively reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to an integrated solenoid valve. Background Technique

[0002] When the solenoid valve is energized, the electromagnetic coil generates an electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, and the spring presses the closing member against the valve seat, and the valve closes. It is an industrial device controlled by electricity and is a basic automation component for controlling fluids. There are many types of solenoid valves, and different solenoid valves play roles in different positions of the control system.

[0003] However, for the solenoid valves on the current market under high-pressure working conditions, it is necessary to drive the moving spool to move. The longer the moving distance, the greater the electromagnetic force required to drive the moving spool to work, so it will lead to an increase in the electromagnetic coil and an increase in cost. Content of the Utility Model

[0004] The utility model provides an integrated solenoid valve, which can effectively solve the problem that when the solenoid valve is under high-pressure working conditions, it is necessary to drive the moving spool to move. The longer the moving distance, the greater the electromagnetic force required to drive the moving spool to work, so it will lead to an increase in the electromagnetic coil and an increase in cost as mentioned in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: an integrated solenoid valve, including an upper valve body cover, the top end inside the upper valve body cover is connected with a valve seat by threads, a magnetic guide cover is clamped and installed at the top end of the upper valve body cover, a sleeve is installed through the middle of the magnetic guide cover, a coil is sleeved outside the sleeve, a static spool is slidably installed at the top end inside the sleeve, a main spring is embedded in the middle of the top surface of the static spool, a moving spool is slidably installed at the bottom end inside the sleeve, a secondary spring is embedded at the top end of the moving spool, a sealing port is opened at the bottom end of the valve seat, the bottom end of the moving spool passes through the sealing port and is connected with a piston, and a conical spring is sleeved at the bottom end of the piston.

[0006] According to the above technical feature, a limiting groove is opened on the outside of the moving spool, and a support rod is clamped inside the limiting groove.

[0007] According to the above technical feature, a sealing ring is sleeved in the middle of the upper valve body cover, a threaded groove is opened at the position of the upper valve body cover below the sealing ring, and water outlet holes are uniformly opened at the bottom end of the upper valve body cover.

[0008] According to the above technical feature, water inlet holes are uniformly opened on the outside of the upper valve body cover, and a water outlet pipe is welded through the bottom end of the upper valve body cover.

[0009] According to the above technical feature, the static spool and the moving spool are in transitional fit with the sleeve, and the diameters of the static spool and the moving spool are equal.

[0010] According to the above technical features, a buffer washer is adhesively bonded to the top end of the static valve core.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: the structure of the present utility model is scientific and reasonable, and it is safe and convenient to use;

[0012] The moving valve core and the static valve core are controlled by double springs. The solenoid valve has a first working engagement point and a second working engagement point. The first working engagement point has a small gap and a short working stroke. The second engagement point does not require electromagnetic force to work and completes the remaining stroke through the system pressure. The first engagement point completes the abutment of the first engagement point through a shorter gap between the moving and static valve cores. After the first engagement point abuts, the second engagement point is pushed by the system pressure to drive the sealing assembly, and the support rod pushes the abutting moving and static valve cores to complete the abutment of the second engagement point. The stroke distance of the first engagement point is short, and the required electromagnetic force can be reduced. In this way, the volume and the amount of the coil of the electromagnetic coil can be effectively reduced, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0014] In the drawings:

[0015] Figure 1 is a schematic structural view of the present utility model;

[0016] Figure 2 is a schematic installation structure view of the sealing ring of the present utility model;

[0017] Figure 3 is a schematic installation structure view of the support rod of the present utility model;

[0018] Figure 4 is a schematic structure view of the opening of the limiting groove of the present utility model;

[0019] The reference numerals in the drawings: 1. upper cover of the valve body; 2. valve seat; 3. sealing ring; 4. magnetic conductive cover; 5. sleeve; 6. coil; 7. static valve core; 8. main spring; 9. moving valve core; 10. auxiliary spring; 11. sealing port; 12. piston; 13. tower-shaped spring; 14. limiting groove; 15. support rod; 16. water inlet hole; 17. water outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following is a description of the preferred embodiments of the present utility model with reference to the drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not used to limit the present utility model.

[0021] Embodiment: AsFigures 1-4 As shown in the figure, the utility model provides a technical solution of an integrated solenoid valve, which includes a valve body upper cover 1. At the inner top end of the valve body upper cover 1, a valve seat 2 is connected by threads. A sealing ring 3 is sleeved in the middle of the valve body upper cover 1. A threaded groove is provided at the position of the valve body upper cover 1 below the sealing ring 3, and water outlet holes are evenly arranged at the bottom end of the valve body upper cover 1, which is convenient for installing the valve body upper cover 1. A magnetic conductive cover 4 is snap-fitted and installed at the top end of the valve body upper cover 1. A sleeve 5 is installed through the middle of the magnetic conductive cover 4. A coil 6 is sleeved outside the sleeve 5. A static valve core 7 is slidably installed at the inner top end of the sleeve 5. A main spring 8 is embedded in the middle of the top surface of the static valve core 7. A moving valve core 9 is slidably installed at the inner bottom end of the sleeve 5. A buffer washer is bonded to the top end of the static valve core 7 to reduce the impact noise generated when the moving valve core 9 returns to its position. A limiting groove 14 is provided on the outside of the moving valve core 9, and a support rod 15 is snap-fitted in the limiting groove 14, so that when the piston 12 rises, the static valve core 7 can be assisted to be pushed by relying on the support rod 15. The static valve core 7 and the moving valve core 9 are in a transition fit with the sleeve 5, and the diameters of the static valve core 7 and the moving valve core 9 are equal, which is convenient for the static valve core 7 and the moving valve core 9 to slide in the sleeve 5. A secondary spring 10 is embedded at the top end of the moving valve core 9. A sealing port 11 is provided at the bottom end of the valve seat 2. The bottom end of the moving valve core 9 penetrates through the sealing port 11 and is connected to a piston 12. A tower-shaped spring 13 is sleeved at the bottom end of the piston 12. Water inlet holes 16 are evenly arranged on the outside of the valve body upper cover 1. A water outlet pipe 17 is welded through the bottom end of the valve body upper cover 1 to facilitate the flow of liquid.

[0022] The working principle and usage process of the utility model: Liquid enters the inside of the valve body upper cover 1 from the water inlet holes 16 and is around the outside of the piston 12. At this time, since the bottom end of the piston 12 tightly presses the top end of the water outlet pipe 17, the solenoid valve is in the closed valve state and no water will flow out;

[0023] When opening the valve, the coil 6 is energized. The coil 6 will drive the moving valve core 9 and the connected piston 12 to rise through electromagnetic force. Due to the blockage of the sleeve 5, the moving valve core 9 rises stably until the secondary spring 10 contracts and the bottom end of the moving valve core 9 abuts against the bottom end of the static valve core 7. At the same time, at both ends of the support rod 15 in the limiting groove 14, at this time, the top end of the support rod 15 abuts against the bottom end of the static valve core 7, and the bottom end of the support rod 15 abuts against the top surface of the piston 12. This is the first working joint point. And a gap appears between the piston 12 and the water outlet pipe 17, and the liquid will enter the water outlet pipe 17. And because the water pressure and the acting force of the coil 6 are greater than the elastic forces of the main spring 8 and the secondary spring 10, the static valve core 7 is pushed by the support rod 15 on the top surface of the piston 12 until the static valve core 7 is pushed to the top end of the sleeve 5. This is the second working joint point. The first working joint point has a small gap and a short working stroke. The work of the second joint point does not require electromagnetic force to work and is completed through the system pressure. The stroke distance of the first joint point is short and the required electromagnetic force can be reduced. In this way, the volume of the coil 6, the amount of the coil 6 and the cost can be effectively reduced;

[0024] When the valve is closed, the acting force of the coil 6 disappears, and the water pressure is less than the sum of the elastic forces of the main spring 8 and the auxiliary spring 10. The static valve core 7 and the dynamic valve core 9 are respectively pushed by the corresponding main spring 8 and auxiliary spring 10, and the bottom end of the piston 12 tightly squeezes the top end of the water outlet pipe 17 to complete the closing operation.

[0025] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated solenoid valve, comprising a valve body upper cover (1), characterized in that: At the inner top end of the valve body upper cover (1), a valve seat (2) is connected by threads. At the top end of the valve body upper cover (1), a magnetic conduction cover (4) is snap-fitted and installed. A sleeve (5) is installed through the middle of the magnetic conduction cover (4). A coil (6) is sleeved outside the sleeve (5). At the inner top end of the sleeve (5), a static spool (7) is slidably installed. In the middle of the top surface of the static spool (7), a main spring (8) is inlaid. At the inner bottom end of the sleeve (5), a dynamic spool (9) is slidably installed. At the top end of the dynamic spool (9), a secondary spring (10) is inlaid. At the bottom end of the valve seat (2), a sealing port (11) is opened. The bottom end of the dynamic spool (9) passes through the sealing port (11) and is connected to a piston (12). A conical spring (13) is sleeved at the bottom end of the piston (12).

2. The integrated solenoid valve according to claim 1, characterized in that, A limit groove (14) is opened on the outside of the dynamic spool (9), and a support rod (15) is snap-fitted in the limit groove (14).

3. The integrated solenoid valve according to claim 1, characterized in that, A sealing ring (3) is sleeved in the middle of the valve body upper cover (1). A thread groove is opened at the position of the valve body upper cover (1) below the sealing ring (3), and water outlet holes are evenly opened at the bottom end of the valve body upper cover (1).

4. The integrated solenoid valve according to claim 1, characterized in that, Water inlet holes (16) are evenly opened on the outside of the valve body upper cover (1), and a water outlet pipe (17) is welded through the bottom end of the valve body upper cover (1).

5. The integrated solenoid valve according to claim 1, characterized in that, The static spool (7) and the dynamic spool (9) are in transition fit with the sleeve (5), and the diameters of the static spool (7) and the dynamic spool (9) are equal.

6. The integrated solenoid valve according to claim 1, characterized in that, A buffer washer is bonded to the top end of the static spool (7).

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