An energy-saving solenoid valve suitable for high-pressure systems

Abstract

The present invention discloses an energy-saving solenoid valve suitable for a high-pressure system, comprising an electromagnet assembly and a valve body, wherein the electromagnet assembly is arranged at the upper end of the valve body, a spring and a moving iron core are sequentially installed 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 is in sliding contact with the valve sleeve, the other end of the small valve is threadedly connected to the moving iron core, the large valve is slidably connected to the valve sleeve, the end of the small valve is inserted into the large valve, and the large valve is in contact and sealed with the valve seat; the small valve, valve sleeve, large valve and valve seat in the valve body form a double valve sealing structure; 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 more rapid and accurate; the design of the double valve sealing structure can better cope with pressure fluctuations in the high-pressure system.

Description

Technical Field

[0001] The present 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 high-pressure system applications, existing solenoid valve technology faces challenges such as high power consumption and slow response. Traditional direct-acting solenoid valves are bulky and require high power, while pilot-operated solenoid valves are complex and have long response times. Neither design is suitable for the low power and fast response requirements of high-pressure systems. Therefore, a new solenoid valve design is needed that can provide efficient control in high-pressure systems while ensuring 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 located at the inlet end of the valve body, and an electromagnet assembly located 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, when subjected to long-term high-pressure operation, the sealing performance may be affected.

[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 the 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 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 number 201910353101.X discloses a high-pressure pneumatic reversing solenoid valve, involving the design of a secondary piston and buffer spring, which optimizes the performance of the valve body in high-pressure working environments. This design focuses on valve performance in high-pressure environments and the requirements 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 number 202320518874.0 and 201921160369.3 both use pilot-operated solenoid valve structures, which are not suitable for the low power and fast response requirements of high-pressure systems. They cannot meet the needs of actual use, so there is an urgent need for improved technologies 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, ensuring that the product response time is fast while ensuring that the volume does not increase; 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 large small valve hole can quickly release the pressure in the closed cavity, and the large valve can quickly form a pressure difference and a fast response time. The small hole is opposite, which can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned objectives, 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 sequentially installed in the electromagnet assembly, a small valve, a valve sleeve, a large valve and a valve seat being sequentially arranged 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 to the moving iron core, the large valve being slidably connected to 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 contact and sealed, an inlet being provided on the outer side of the valve body, an oil chamber being provided between the valve sleeve and the valve body, the inlet being connected to the oil chamber, and the center hole of the valve seat being provided as an outlet; the small valve, valve sleeve, large valve and 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 and the valve body are threadedly connected, 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. The small valve is provided with a right small hole. When the small valve is opened, the small hole is communicated 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 slidingly 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 provided 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:

[0015] 1. The solenoid valve adopts a 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. The product response time is controlled by the size of the small valve hole. The larger the small valve hole, the faster the pressure relief of the closed cavity. The larger the valve hole, the faster the pressure difference and the faster the response time. The smaller the hole, the worse the response time.

[0016] 2. The magnetic connection method drives the small valve switch, 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 precise, thereby improving the overall control performance of the system. The double valve sealing structure design can better cope with 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, which can also ensure the sealing performance and working stability of the valve, effectively prevent leakage, and ensure the efficiency and reliability of the system in long-term operation.

[0017] 3. This solenoid valve is not only suitable for high-pressure systems, but can also be used in a variety of situations 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

[0018] Figure 1 Schematic diagram of the structure of the present invention Figure 1 ;

[0019] Figure 2 This is an enlarged schematic diagram of the power-off state at position 1 of the present invention;

[0020] Figure 3 This is an enlarged schematic diagram of the power-on state of location 1 of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the present invention Figure 2 .

[0022] 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 closing 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

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example 1

[0024] 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, the electromagnet assembly 1 being arranged at the upper end of the valve body 10, a spring 2 and a moving iron core 3 being sequentially installed in the electromagnet assembly 1, the electromagnet assembly 1 drives the moving iron core 3 to move by electromagnetic force, 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, 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, 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 movement of the moving iron core 3 can drive the small valve 5 to open or close, 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 connected to 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 magnetically connected, 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. The center hole of the valve seat 8 is set as an outlet 12; the small valve 5, valve sleeve 6, large valve 7, and 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 the spherical surface.

[0025] 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.

[0026] Furthermore, the valve seat 8 and the valve body 10 are threadedly connected, 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.

[0027] 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 .

[0028] When the electromagnet assembly 1 is energized, the moving iron core 3 is subjected to electromagnetic attraction. 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 designed through the small valve 5 is connected to the system outlet 12. The pressure in the closed chamber 11 drops, and the large valve 7 is opened by the pressure difference. When the electromagnet assembly 1 is de-energized, the moving iron core 3 is subjected to the spring force and 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 has a fast response time.

[0029] 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.

[0030] 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 usage requirements.

[0031] 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 channel 17 is provided on the moving iron core 3. The oil channel 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, which can be closed by the joint action of system pressure and spring force. While ensuring a simple structure and a small size, the product has the advantage of fast response time.

[0032] Working principle:

[0033] 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 opening and closing 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 de-energized, the moving iron core 3 is acted upon by the spring force and the system pressure, closing 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.

[0034] The double valve sealing structure ensures reliable sealing: during operation, the right end of the small valve 5 is conical, forming a seal with the large valve 7; the small valve 5 can accurately control the opening and closing positions through a 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 in a 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 an electromagnet, and uses a double valve sealing structure to ensure efficient and reliable sealing performance, ensuring that the system can operate stably under high-pressure environments.

[0035] 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 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 the spring (2) and the moving iron core (3) are sequentially installed in the electromagnet assembly (1). The small valve (5), the valve sleeve (6), the large valve (7) and the valve seat (8) are sequentially arranged in the valve body (10). 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) and the valve seat (8) are in contact and sealed. The outer side of the valve body (10) is provided with an inlet (13). The valve sleeve (6) is in contact with the valve body (1 0) is provided between the oil chamber (14), the inlet (13) is communicated with the oil chamber (14), and the center hole of the valve seat (8) is provided as the 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 tapered, 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 the spherical surface, and the small valve (5), the valve sleeve (6) and the large valve (7) form a closed chamber (11), and 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).

2. The energy-saving solenoid valve suitable for high-pressure systems 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 high-pressure systems 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 high-pressure systems according to claim 1, characterized in that: 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 slidably connected to the large valve (7). The tapered structure at the right end of the small valve (5) corresponds to the center hole of the large valve (7).

5. The energy-saving solenoid valve suitable for high-pressure systems according to claim 4, 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).

6. The energy-saving solenoid valve suitable for high-pressure systems according to claim 1, characterized in that: A connecting cavity (18) is provided between the moving iron core (3) and the valve sleeve (6), the spring (2) is located in the spring cavity (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 cavity (18) with the spring cavity (16), and the connecting cavity (18) is communicated with the oil cavity (14).

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