A two-way solenoid valve with integrated check valve

Abstract

This utility model belongs to the field of solenoid valve technology, and relates to a two-way solenoid valve with an integrated one-way valve. It includes a main valve body and a one-way valve. The main valve body includes an inlet and an outlet. The one-way valve includes a valve body, a valve core, and a one-way return spring. The one-way valve body has a first splicing valve chamber, and the main valve body has a second splicing valve chamber. The one-way valve body and the main valve body are connected, and the first and second splicing valve chambers are joined to form the one-way valve chamber. This utility model, through the structural design between the one-way valve body and the main valve body, achieves the encapsulation of the one-way valve and the solenoid control within a shared cavity, eliminating the need for additional one-way valve installation space, reducing the number of interfaces, and enhancing sealing. One end of the one-way valve is built into the main valve body, reducing circuits and ensuring timely opening and closing response. The one-way valve and the main valve core are not coaxial, resulting in a simple structure and easy maintenance.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a two-way solenoid valve with an integrated one-way valve. Background Technology

[0002] Traditional two-way solenoid valves cannot withstand reverse pressure and are typically used in conjunction with check valves in multi-pressure systems. Check valves are usually arranged separately and connected via threaded pipe ports, resulting in complex system structures, high installation costs, increased leakage risk, and unsuitability for dense parallel installations. Especially in multi-pressure control systems requiring check valve functionality and frequent opening and closing, traditional structures struggle to meet the dual requirements of compactness and dense installation. Therefore, there is an urgent need for a solenoid valve structure integrating a check valve to simplify system design, increase installation density, and reduce the number of piping components. Utility Model Content

[0003] The purpose of this invention is to solve the technical problems existing in the background art. To this end, a two-way solenoid valve with an integrated one-way valve is provided.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A two-way solenoid valve with an integrated one-way valve includes a main valve body and a one-way valve. The main valve body includes an inlet and a main valve outlet. The one-way valve includes a one-way valve body, a one-way valve core, and a one-way return spring. The one-way valve body has a first splicing valve chamber, and the main valve body has a second splicing valve chamber. The one-way valve body and the main valve body are connected, and the first splicing valve chamber and the second splicing valve chamber are spliced ​​together to form the one-way valve chamber. One end of the one-way valve core elastically abuts against the inner wall of the first splicing valve chamber through the one-way return spring, and the other end of the one-way valve core abuts against or separates from the main valve outlet located in the second splicing valve chamber.

[0006] The following is a further defined technical solution of this utility model: a sealing ring is provided between the one-way valve body and the main valve body.

[0007] The following is a further defined technical solution of this utility model: the one-way valve body has an outlet at one end away from the splicing valve chamber.

[0008] The following is a further defined technical solution of this utility model: an abutment ring is provided at one end of the one-way valve core near the outlet of the main valve, and the abutment ring abuts against or separates from the outlet of the main valve.

[0009] Compared with the prior art, the present invention has the following technical effects:

[0010] This invention achieves encapsulation of the check valve and the electromagnetic control shared cavity (which includes the main valve body and the pilot valve body) through structural design between the check valve body and the main valve body. This eliminates the need for additional check valve installation space, reduces the number of interfaces, and enhances sealing. One end of the check valve is built into the main valve body, reducing the number of circuits and ensuring timely opening and closing response. The check valve and the main valve core are not coaxial, resulting in a simple structure and easy maintenance.

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Reference numerals in the attached diagram: 1. Electromagnetic coil; 2. Pilot valve core; 3. Pilot valve body; 4. Main valve core; 5. Main valve body; 6. Inlet; 7. Main valve return spring; 8. Pilot chamber; 9. Pilot outlet; 10. Main valve outlet; 11. Check valve chamber; 12. Check valve core; 13. Check return spring; 14. Check valve body; 15. Outlet. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] like Figure 1As shown, this embodiment provides a two-way solenoid valve with an integrated one-way valve, mainly composed of a main valve, a pilot valve, and a one-way valve. The main valve consists of a main valve body 5, a main flow channel, a main valve core 4, a main valve return spring 7, an inlet 6, and a main valve outlet 10. The pilot valve consists of an electromagnetic coil 1, a pilot chamber 8, a pilot valve core 2, a pilot valve body 3, and a pilot outlet 9. The one-way valve consists of a one-way valve chamber 11, a one-way valve core 12, a one-way return spring 13, a one-way valve body 14, and an outlet 15. First, the electromagnetic coil 1 drives the pilot valve core 2 to open and close. The main valve core 4 opens and closes under the action of the pilot valve core 2, and the main flow channel achieves fluid flow under the action of the main valve core 4, thus realizing the function of the two-way solenoid valve. Then, the outlet of the two-way solenoid valve (i.e., the main valve outlet 10) is connected to the one-way valve for one-way flow, thereby achieving reverse pressure through the one-way valve.

[0017] like Figure 1 As shown, the one-way valve chamber 11 is formed by splicing two splicing valve chambers. The one-way valve body 14 has a splicing valve chamber 1 at its right end, and the main valve body 5 has a splicing valve chamber 2 at its left end. The right end of the one-way valve body 14 and the left end of the main valve body 5 are fixedly connected (by welding) and a sealing ring 1 is provided between the one-way valve body 14 and the main valve body 5.

[0018] The left end of the one-way valve core 12 elastically abuts against the inner wall of the first splicing valve chamber via a one-way return spring 13, while the right end of the one-way valve core 12 abuts against or separates from the main valve outlet 10 located in the second splicing valve chamber. To improve the sealing performance when the right end of the one-way valve core 12 abuts against the main valve outlet 10, an abutment ring is provided at the right end of the one-way valve core 12, which abuts against or separates from the left end of the main valve outlet 10.

[0019] The working process of this embodiment will be further described below:

[0020] When energized, the electromagnetic coil 1 excites the pilot valve core 2 to move upward, and the fluid in the pilot chamber 8 flows through the pilot valve body 3 and the pilot outlet 9 into the main valve outlet 10; at the same time, the main valve core 4 moves upward, opens the main flow channel, and under the fluid pressure, overcomes the force of the one-way valve reset spring to open the one-way valve, realizing the flow of fluid from the inlet 6 to the outlet 15.

[0021] When the electromagnetic coil 1 is de-energized, the pilot valve core 2 resets under spring force, cutting off the pilot fluid in the pilot chamber 8. Fluid accumulates in the pilot chamber 8, and under the combined action of the main valve return spring 7, the main valve core 4 moves downward, closing the main flow channel, thus stopping the flow of fluid from the inlet 6 to the outlet 15. The check valve closes under the action of the check valve return spring.

[0022] In summary, regardless of whether the electromagnetic coil 1 is energized or de-energized, when the pressure at the outlet 15 is higher than the pressure at the inlet 6, the check valve enters the shut-off state under the combined action of the pressure difference and the check valve reset spring, thus protecting the safety of the system.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A two-way solenoid valve with an integrated one-way valve, comprising a main valve body and a one-way valve, wherein the main valve body includes an inlet and a main valve outlet, and the one-way valve includes a one-way valve body, a one-way valve core, and a one-way return spring, characterized in that, The one-way valve body is provided with a first splicing valve chamber, and the main valve body is provided with a second splicing valve chamber. The one-way valve body and the main valve body are connected, and the first splicing valve chamber and the second splicing valve chamber are spliced ​​together to form a one-way valve chamber. One end of the one-way valve core is elastically abutted against the inner wall of the first splicing valve chamber through a one-way return spring, and the other end of the one-way valve core is abutted against or separated from the main valve outlet located in the second splicing valve chamber.

2. The two-way solenoid valve with an integrated one-way valve as described in claim 1, characterized in that, A sealing ring is provided between the one-way valve body and the main valve body.

3. The two-way solenoid valve with an integrated one-way valve as described in claim 1, characterized in that, The one-way valve body has an outlet at the end away from the splicing valve chamber.

4. A two-way solenoid valve with an integrated one-way valve as described in claim 1, characterized in that, The one-way valve core is provided with an abutment ring at one end near the main valve outlet, and the abutment ring is either in contact with or separate from the main valve outlet.

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