Energy-saving electromagnetic valve suitable for high-pressure system

Abstract

The energy-saving electromagnetic valve comprises an electromagnet assembly and a valve body, the electromagnet assembly is arranged at the upper end of the valve body, a spring and a movable iron core are sequentially arranged in the electromagnet assembly, a small valve, a valve sleeve, a large valve and a valve seat are sequentially arranged in the valve body, one end of the small valve is inserted into the valve sleeve, and the other end of the large valve is inserted into the valve seat. The other end of the small valve is in threaded connection with the movable iron core, the large valve is in sliding connection with the valve sleeve, the end of the small valve is inserted into the large valve, and the large valve abuts against the valve seat in a sealed mode. A small valve, a valve sleeve, a large valve and a valve seat in the valve body form a double-valve sealing structure; a small valve switch is driven in a magnetic connection mode, a control signal can be quickly responded, and the response speed of the electromagnetic valve is remarkably increased; by means of the design, complexity of a hydraulic system is avoided, and opening and closing of the valve are quicker and more accurate. The design of the double-valve sealing structure can better cope with pressure fluctuation in a high-pressure system.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valve energy saving, in particular to an energy-saving solenoid valve suitable for a high-pressure system. Background Art

[0002] In the application of high-pressure systems, the existing solenoid valve technology faces problems such as high power consumption and slow response speed. The traditional direct-acting solenoid valve is large in size and high in power, while the pilot-operated solenoid valve has a complex structure and a long response time, which are not suitable for the requirements of low power and fast response in high-pressure systems. Therefore, a new solenoid valve design is needed that can provide efficient control in high-pressure systems and ensure low power consumption and fast response.

[0003] Chinese patent application No. 202110952524.0 discloses a low-power bistable solenoid valve, which includes a valve body, an inlet connector at the inlet end of the valve body, and an electromagnet assembly at the outlet end of the valve body. A double group (or multiple groups) of coils replace the single group of coil configurations of traditional solenoid valves, and reduce energy consumption by optimizing the design of the electromagnet and the valve structure. It is suitable for micro-electronic systems, but there are still certain limitations in the sealing reliability and durability of high-voltage systems. In particular, the sealing performance may be affected when subjected to long-term high-pressure operation.

[0004] Patent application number US19900585322 discloses a solenoid valve for efficiently controlling high flow capacity, including an armature formed as a sleeve, one end of which is sealed on a valve seat. Although the patent includes hydraulic control and spring force balancing mechanisms, it has poor adaptability to extremely high working pressures. The hydraulic control system and multiple valve elements therein may lead to high manufacturing costs and difficult maintenance. At the same time, it relies on the hydraulic control system to adjust the opening and closing of the valve, which may make it unreliable when dealing with extreme working conditions. The energy conversion process of the hydraulic system will have a certain amount of energy loss, and a higher starting power is required for each switch; resulting in the response speed being affected by the hydraulic pressure regulation.

[0005] Chinese patent application No. 201910353101.X discloses a high-pressure pneumatic reversing solenoid valve, involving the design of a secondary piston and a buffer spring, which optimizes the performance of the valve body under high-pressure working environments. The design focuses on the valve performance in high-pressure environments and the needs of pneumatic reversing control solenoid valves in high-pressure gas pipelines, but does not explicitly involve low power consumption and energy-saving optimization; Chinese patent applications No. 202320518874.0 and 201921160369.3 are both pilot solenoid valve structures, which are not suitable for the requirements of low power and fast response in high-pressure systems; they cannot meet the needs of actual use, so there is an urgent need for improved technologies on the market to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the existing defects and provide an energy-saving solenoid valve suitable for high-pressure systems. The solenoid valve adopts a brand-new double valve. The closing time of the electromagnet is achieved through the combined action of system pressure and spring force. While ensuring that the volume does not increase, the product response time is fast. When the electromagnet is energized, the electromagnetic force directly controls the opening of the small valve. The product response time is controlled by the size of the small hole of the small valve. The small valve has a large hole and the closed cavity releases pressure quickly. The large valve forms a pressure difference quickly and the response time is fast. On the contrary, the small hole is small, which can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving solenoid valve suitable for a high-pressure system, comprising an electromagnet assembly and a valve body, the electromagnet assembly being arranged at the upper end of the valve body, a spring and a moving iron core being arranged in the electromagnet assembly in sequence, a small valve, a valve sleeve, a large valve and a valve seat being arranged in sequence in the valve body, one end of the small valve being inserted into the valve sleeve and in sliding contact with the valve sleeve, the other end of the small valve being threadedly connected with the moving iron core, the large valve being slidably connected with the valve sleeve, and the end of the small valve being inserted into the large valve, the large valve and the valve seat being in abutment and sealing, an inlet being arranged on the outer side of the valve body, an oil chamber being arranged between the valve sleeve and the valve body, the inlet being connected with the oil chamber, and the central hole of the valve seat being arranged as an outlet; the small valve, the valve sleeve, the large valve and the valve seat in the valve body form a double valve sealing structure, the right end of the small valve is conical, and the right end of the small valve forms a seal with the large valve, and the large valve forms another seal with the valve seat through a spherical surface.

[0008] Furthermore, the electromagnet assembly and the valve body are connected via threads, and a sealing ring 1 is provided at the connection between the electromagnet assembly and the valve body.

[0009] Furthermore, the valve seat is threadedly connected to the valve body, and a second sealing ring is provided between the valve seat and the valve body.

[0010] Furthermore, the small valve, the valve sleeve and the large valve form a closed cavity, and a right small hole is provided on the small valve. After the small valve is opened, the small hole is connected with the outlet.

[0011] Furthermore, the small valve is configured with a larger diameter at the left end and a smaller diameter at the right end. The right end of the small valve is inserted into the large valve and is slidably connected to the large valve. The tapered structure at the right end of the small valve corresponds to the center hole of the large valve.

[0012] Furthermore, the left end of the small valve is threadedly connected to the moving iron core, and an adjusting gasket is arranged between the small valve and the moving iron core.

[0013] Furthermore, a connecting cavity is provided between the moving iron core and the valve sleeve, the spring is located in the spring cavity of the moving iron core, an oil channel is provided on the moving iron core, the oil channel connects the connecting cavity with the spring cavity, and the connecting cavity is communicated with the oil cavity.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The solenoid valve adopts a brand-new double valve. The closing time of the electromagnet is achieved through the combined action of system pressure and spring force. Under the condition of ensuring that the volume does not increase, the product response time is guaranteed to be fast. When the electromagnet is energized, the electromagnetic force directly controls the opening of the small valve, and the product response time is controlled by the size of the small valve hole. The small valve hole is large, the closed cavity pressure is released quickly, the large valve forms a pressure difference quickly, and the response time is fast. The small hole is small, and vice versa.

[0015] 2. The small valve switch is driven by magnetic connection, which can quickly respond to the control signal and significantly improve the response speed of the solenoid valve. This design avoids the complexity of the hydraulic system, making the valve opening and closing faster and more accurate, thereby improving the overall control performance of the system. The design of the double valve sealing structure can better cope with the pressure fluctuations in the high-pressure system and provide a more reliable sealing effect. The small valve, valve sleeve, large valve and valve seat inside the valve body form a double seal, and the sealing performance and working stability of the valve can also be guaranteed, which can effectively prevent leakage and ensure the efficiency and reliability of the system in long-term operation.

[0016] 3. This solenoid valve is not only suitable for high-pressure systems, but can also be used in a variety of occasions requiring low power and fast response. It is widely used in hydraulic, pneumatic, chemical and other industrial fields; its high efficiency, energy saving and fast response characteristics make it have broad application prospects in high-pressure working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ; Figure 2 This is a schematic diagram of an enlarged power-off state at location I of the present invention; Figure 3 This is a schematic diagram of an enlarged power-on state of location I of the present invention; Figure 4 The structure of the present invention is shown in FIG. Figure 2 .

[0018] In the figure: 1 electromagnet assembly, 2 spring, 3 moving iron core, 4 sealing ring 1, 5 small valve, 6 valve sleeve, 7 large valve, 8 valve seat, 9 sealing ring 2, 10 valve body, 11 closed chamber, 12 outlet, 13 inlet, 14 oil chamber, 15 small hole, 16 spring chamber, 17 oil channel, 18 connecting chamber, 19 adjusting gasket. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Example 1

[0020] See also Figure 1-4 The present invention provides a technical solution: an energy-saving solenoid valve suitable for a high-pressure system, comprising an electromagnet assembly 1 and a valve body 10, wherein the electromagnet assembly 1 is arranged at the upper end of the valve body 10, wherein a spring 2 and a moving iron core 3 are sequentially arranged in the electromagnet assembly 1, wherein the electromagnet assembly 1 drives the moving iron core 3 to move by electromagnetic force, wherein the function of the spring 2 is to ensure that the small valve 5 can be reset to its original position after power failure, thereby ensuring the reliability of the solenoid valve, wherein a small valve 5, a valve sleeve 6, a large valve 7 and a valve seat 8 are sequentially arranged in the valve body 10, wherein one end of the small valve 5 is inserted into the valve sleeve 6 and is in sliding contact with the valve sleeve 6, wherein the other end of the small valve 5 is threadedly connected to the moving iron core 3, wherein the movement of the moving iron core 3 can drive the small valve 5 to open or close, wherein the large valve 7 is slidably connected to the valve sleeve 6, and The end of the small valve 5 is inserted into the large valve 7, and the large valve 7 is sealed against the valve seat 8. An inlet 13 is provided on the outer side of the valve body 10, and an oil chamber 14 is provided between the valve sleeve 6 and the valve body 10. The inlet 13 is communicated with the oil chamber 14, and the oil enters the oil chamber 14 through the inlet 13 and then fills the valve body 10. The small valve 5 and the moving iron core 3 are connected by a magnetic connection, so that the movement of the moving iron core 3 can overcome the elastic force of the spring 2 to directly drive the opening and closing of the small valve 5, and the center hole of the valve seat 8 is set as an outlet 12; the small valve 5, the valve sleeve 6, the large valve 7, and the valve seat 8 in the valve body 10 form a double valve sealing structure, the right end of the small valve 5 is conical, and the right end of the small valve 5 forms a seal with the large valve 7, and the large valve 7 forms another seal with the valve seat 8 through a spherical surface.

[0021] Furthermore, the electromagnet assembly 1 and the valve body 10 are connected by threads to ensure that the electromagnet assembly 1 can be stably fixed on the valve body 10, and a sealing ring 4 is provided at the connection between the electromagnet assembly 1 and the valve body 10.

[0022] Furthermore, the valve seat 8 is threadedly connected to the valve body 10, and a sealing ring 9 is provided between the valve seat 8 and the valve body 10. The sealing ring 9 plays a role in sealing the valve body 10 to prevent fluid leakage.

[0023] Furthermore, the small valve 5 , the valve sleeve 6 and the large valve 7 form a closed chamber 11 . A right small hole 15 is provided on the small valve 5 . When the small valve 5 is opened, the small hole 15 is communicated with the outlet 12 .

[0024] When the electromagnet assembly 1 is energized, the moving iron core 3 is acted upon by the electromagnetic attraction, and only a very low electromagnetic force is needed to overcome the elastic force of the spring 2 to open the small valve 5. The small hole 15 is designed through the small valve 5 to connect with the system outlet 12, and the pressure in the closed chamber 11 drops. The large valve 7 is opened by the pressure difference. When the electromagnet assembly 1 is de-energized, the moving iron core 3 is acted upon by the spring force and the system pressure to close the small valve 5, thereby driving the large valve 7 to close. Therefore, the solenoid valve only needs very small power to realize the opening function, and the response time is fast.

[0025] Furthermore, the small valve 5 is configured to have a larger diameter at the left end and a smaller diameter at the right end. The right end of the small valve 5 is inserted into the large valve 7 and is slidingly connected to the large valve 7, which is equivalent to the large valve 7 being sleeved on the small valve 5. This can reduce the size of the solenoid valve and meet the needs of structural miniaturization. The conical structure at the right end of the small valve 5 corresponds to the center hole of the large valve 7. When the solenoid valve is closed, the small valve 5 is in contact and sealed with the large valve 7.

[0026] Furthermore, the left end of the small valve 5 is threadedly connected to the moving iron core 3, and an adjustment gasket 19 is provided between the small valve 5 and the moving iron core 3. By changing the thickness or number of the adjustment gasket 19, the matching relationship between the moving iron core 3, the small valve 5 and the large valve 7 can be adjusted to meet the use requirements.

[0027] Furthermore, a connecting chamber 18 is provided between the moving iron core 3 and the valve sleeve 6, the spring 2 is located in the spring chamber 16 of the moving iron core 3, and an oil passage 17 is provided on the moving iron core 3. The oil passage 17 connects the connecting chamber 18 with the spring chamber 16, and the connecting chamber 18 is communicated with the oil chamber 14, so that the oil in the oil chamber 14 enters the connecting chamber 18 and the spring chamber 16 in turn, and the oil fills the valve body 10. The pressure generated by the oil and the spring force drive the moving iron core 3 to move, and then drive the large valve 7 to close through the small valve 5. The device has only one spring 2, and can achieve closing through the combined action of system pressure and spring force. While ensuring a simple structure and a small size, the product has the advantages of fast response time.

[0028] Working principle: When the solenoid valve is energized, the electromagnetic force in the electromagnet assembly 1 takes effect, driving the moving iron core 3 to move downward; the movement of the moving iron core 3 drives the small valve 5 to perform corresponding opening and closing operations; the moving iron core 3 and the small valve 5 are connected by a threaded connection, so that the displacement of the moving iron core directly drives the switch of the small valve; only a very low electromagnetic force is required to overcome the spring force to open the small valve 5, and the small valve 5 is connected to the system outlet 12 through the small hole 15 designed, the pressure in the closed chamber 12 drops, and the large valve 7 is opened by the pressure difference; when the electromagnet assembly 1 is powered off, the moving iron core 3 is acted upon by the spring force and the system pressure to close the small valve 5, thereby driving the large valve 7 to close; therefore, the solenoid valve only needs very little power to achieve the opening function.

[0029] The double valve sealing structure ensures reliable sealing: during operation, the right end of the small valve 5 is tapered to form a seal with the large valve 7; the small valve 5 can accurately control the opening and closing positions through the magnetic connection with the moving iron core 3; and the large valve 7 forms another seal with the valve seat 8 through the spherical surface, thereby effectively preventing oil leakage when the valve is closed; the oil chamber 14 between the valve sleeve 6 and the valve body 10 provides stable hydraulic support to ensure the sealing and stability of the valve under high pressure; through the double sealing structure, the valve can still maintain long-term sealing performance under high-pressure working environment, and effectively prevent leakage, ensuring the reliability and safety of the system; in general, the solenoid valve controls the opening and closing of the small valve through the electromagnet, and uses the double valve sealing structure to ensure efficient and reliable sealing performance, ensuring that the system can operate stably under high-pressure environment.

[0030] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which all fall within the scope of the present invention to be protected.

Claims

1. An energy-saving solenoid valve suitable for a high-pressure system, comprising an electromagnet assembly (1) and a valve body (10), characterized in that: The electromagnet assembly (1) is arranged at the upper end of the valve body (10), and a spring (2) and a moving iron core (3) are arranged in the electromagnet assembly (1) in sequence. A small valve (5), a valve sleeve (6), a large valve (7) and a valve seat (8) are arranged in the valve body (10) in sequence. One end of the small valve (5) is inserted into the valve sleeve (6) and is in sliding contact with the valve sleeve (6). The other end of the small valve (5) is threadedly connected to the moving iron core (3). The large valve (7) is slidably connected to the valve sleeve (6), and the end of the small valve (5) is inserted into the large valve (7). The large valve (7) is in sliding contact with the valve seat (8). The valve body (10) is provided with an inlet (13) on the outer side surface thereof, an oil chamber (14) is provided between the valve sleeve (6) and the valve body (10), the inlet (13) is communicated with the oil chamber (14), and the center hole of the valve seat (8) is provided as an outlet (12); the small valve (5), the valve sleeve (6), the large valve (7), and the valve seat (8) in the valve body (10) form a double valve sealing structure, the right end of the small valve (5) is conical, and the right end of the small valve (5) forms a seal with the large valve (7), and the large valve (7) forms another seal with the valve seat (8) through a spherical surface.

2. The energy-saving solenoid valve suitable for a high-pressure system according to claim 1, characterized in that: The electromagnet assembly (1) and the valve body (10) are connected via threads, and a sealing ring (4) is provided at the connection between the electromagnet assembly (1) and the valve body (10).

3. The energy-saving solenoid valve suitable for a high-pressure system according to claim 1, characterized in that: The valve seat (8) and the valve body (10) are threadedly connected, and a second sealing ring (9) is provided between the valve seat (8) and the valve body (10).

4. The energy-saving solenoid valve suitable for a high-pressure system according to claim 1, characterized in that: The small valve (5), the valve sleeve (6) and the large valve (7) form a closed chamber (11). The small valve (5) is provided with a right small hole (15). When the small valve (5) is opened, the small hole (15) is communicated with the outlet (12).

5. The energy-saving solenoid valve suitable for a high-pressure system according to claim 1, characterized in that: The small valve (5) is arranged with a larger diameter at the left end and a smaller diameter at the right end. The right end of the small valve (5) is inserted into the large valve (7) and is slidably connected to the large valve (7). The tapered structure at the right end of the small valve (5) corresponds to the central hole of the large valve (7).

6. The energy-saving solenoid valve suitable for a high-pressure system according to claim 5, characterized in that: The left end of the small valve (5) is threadedly connected to the moving iron core (3), and an adjustment gasket (19) is provided between the small valve (5) and the moving iron core (3).

7. The energy-saving solenoid valve suitable for a high-pressure system according to claim 1, characterized in that: A connecting chamber (18) is provided between the moving iron core (3) and the valve sleeve (6); the spring (2) is located in the spring chamber (16) of the moving iron core (3); an oil passage (17) is provided on the moving iron core (3); the oil passage (17) connects the connecting chamber (18) with the spring chamber (16); and the connecting chamber (18) is communicated with the oil chamber (14).

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