Combined electromagnetic regulating valve

Abstract

The invention provides a combined electromagnetic regulating valve, and belongs to the technical field of electromagnetic valves, the combined electromagnetic regulating valve comprises a base and an electromagnetic valve assembly mounted on the base, and the electromagnetic valve assembly comprises a plurality of electromagnetic valves arranged side by side; the electromagnetic valve comprises a valve body, a valve rod and an electromagnetic coil; an acting part is arranged at the end, located in the flow channel, of the valve rod and comprises a magnetic piece, a sliding sleeve and an elastic piece. Wherein the magnetic sheet is fixedly arranged on the top wall of the flow channel; the sliding sleeve is located below the magnetic piece, the valve rod is sleeved with the sliding sleeve, the sliding sleeve is in sliding connection with the valve rod, and the sliding sleeve and the magnetic piece can be attracted. The two ends of the elastic piece are connected with the sliding sleeve and the bottom of the valve rod respectively, and the elastic piece can pull the sliding sleeve to be separated from the magnetic piece after the valve rod is attached to the sealing sleeve. According to the combined type electromagnetic regulating valve, the impact force of the bottom of the valve rod to the sealing sleeve is released in a segmented mode, the impact borne by the sealing sleeve is reduced, abrasion is reduced, and it is guaranteed that the sealing sleeve can bear enough pressing force to guarantee the sealing performance.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valves, and in particular to a combined electromagnetic regulating valve. Background Art

[0002] The solenoid control valve is an industrial equipment controlled by electromagnetics. It is an automated basic component used to control fluids. It is an actuator and is not limited to hydraulic or pneumatic. It is used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. The solenoid control valve can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many types of solenoid control valves, and different solenoid control valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, speed control valves, etc. In the prior art, the electromagnetic force of the solenoid valve will cause the valve stem to hit the valve body. Excessive impact force will cause wear on the valve stem and the valve body, which will affect the sealing effect in the long run and cause the solenoid valve to leak.

[0003] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] Based on this, it is necessary to provide a combined electromagnetic regulating valve to solve the problem of wear caused by the collision between the valve stem and the valve body inside the existing electromagnetic valve.

[0005] The above purpose is achieved through the following technical solutions: A combined electromagnetic regulating valve comprises a base and an electromagnetic valve assembly mounted on the base, wherein the electromagnetic valve assembly comprises a plurality of electromagnetic valves arranged side by side; Wherein, the solenoid valve comprises a valve body, a valve stem and a solenoid coil; The valve body has a flow channel inside, at least part of the structure of the valve stem is located in the flow channel, a sealing sleeve is provided in the flow channel, and the valve stem can fit with the end of the sealing sleeve to close the flow channel; The valve stem is slidably disposed inside the valve body, the electromagnetic coil is disposed on one side of the valve body, and the electromagnetic coil is configured to drive the valve stem to move closer to the sealing sleeve when it is energized; An action part is provided at one end of the valve stem located inside the flow channel, and the action part includes a magnetic sheet, a sliding sleeve and an elastic member; Wherein, the magnetic sheet is fixedly arranged on the top wall of the flow channel; The sliding sleeve is located below the magnetic sheet, the sliding sleeve is sleeved on the valve stem and is slidably connected to the valve stem, and the sliding sleeve can be attracted to the magnetic sheet; The two ends of the elastic member are respectively connected to the sliding sleeve and the bottom of the valve stem. The elastic member can pull the sliding sleeve to separate from the magnetic sheet after the valve stem and the sealing sleeve are in contact with each other.

[0006] Furthermore, the action part also includes a piston, which is fixedly connected to the sleeve, and the edge of the piston is in contact with the inner wall of the flow channel. The piston is configured to be able to move toward one side of the sealing sleeve under the drive of the sleeve, so that a pressure chamber is formed between the piston and the sealing sleeve.

[0007] Furthermore, the action part also includes a sealing plate, an air bag and a connecting ring; Wherein, the sealing plate is fixedly arranged at the bottom of the valve stem; The connecting ring is fixedly arranged at the bottom of the sealing plate, and the connecting ring can fit with the end of the sealing sleeve; The two airbags are provided with two airbags, which are respectively located at the inner side and the outer side of the sealing sleeve, and the two airbags are connected through the connecting ring.

[0008] Furthermore, both inner and outer sides of the end of the sealing sleeve are provided with chamfered structures, the airbag is an annular structure and its cross section is a D-shaped structure, and the side wall of the airbag can fit with the chamfered structure.

[0009] Furthermore, the connecting ring is a hollow structure, and through holes are provided on the inner ring surface and the outer ring surface of the connecting ring, and the connecting ring is connected with the airbag through the through holes.

[0010] Furthermore, the elastic member includes a first spring, and the first spring is sleeved on the valve stem.

[0011] Furthermore, the valve body has a reset cavity, the part of the valve stem located in the reset cavity is sleeved with a second spring, the part of the valve stem located in the reset cavity is fixedly connected with a connecting plate, and the second spring is respectively connected to the connecting plate and the top wall of the reset cavity.

[0012] Furthermore, the valve stem includes a blocking section and a pressing section which are arranged away from each other, the blocking section can fit with the end of the sealing sleeve, and the pressing section can be attracted by the electromagnetic coil.

[0013] Furthermore, the solenoid valve is a normally open solenoid valve. When the solenoid valve is in an open state, the pressing section is located above the solenoid coil, and the cross-sectional area of ​​the pressing section is larger than the cross-sectional area of ​​the valve stem structure below it.

[0014] Furthermore, the base has a total liquid inlet channel and a total liquid outlet channel, the liquid inlet end of the solenoid valve is connected to the total liquid inlet channel, and the liquid outlet end of the solenoid valve is connected to the total liquid outlet channel.

[0015] The beneficial effects of the present invention are: In the combined electromagnetic regulating valve of the present invention, after the electromagnetic coil is energized, it attracts the valve stem to move downward until the bottom of the valve stem seals the sealing sleeve. During this process, the valve stem drives the elastic member to stretch, and conversely the elastic member applies a pulling force to the valve stem to hinder the downward movement of the valve stem, thereby reducing the impact force of the bottom of the valve stem on the sealing sleeve, reducing the wear of the contact part between the bottom of the valve stem and the sealing sleeve, extending the service life of the valve stem and the sealing sleeve, and ensuring the sealing of the electromagnetic valve.

[0016] In the combined electromagnetic regulating valve of the present invention, when the bottom of the valve stem is in contact with the sealing sleeve, the elastic member is stretched and the pulling force of the elastic member is greater than the attractive force between the magnetic sheet and the sliding sleeve, so the elastic member pulls the sliding sleeve downward. During this process, the resistance of the elastic member to the valve stem disappears, and the valve stem can further press the sealing sleeve to ensure the sealing performance of the electromagnetic valve.

[0017] In the combined electromagnetic regulating valve of the present invention, the impact force of the bottom of the valve stem on the sealing sleeve is released in sections, which not only reduces the impact on the sealing sleeve and reduces the wear, but also ensures that the sealing sleeve can be subjected to sufficient pressing force to ensure the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a combined electromagnetic regulating valve according to an embodiment of the present invention; Figure 2 A front view of a combined electromagnetic regulating valve according to an embodiment of the present invention; Figure 3 For the present invention Figure 2 AA section view of the combined electromagnetic regulating valve in the open state; Figure 4 For the present invention Figure 3 A cross-sectional view of the combined electromagnetic regulating valve in a closed state; Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle; Figure 6 For the present invention Figure 4 A partial enlarged view of point C in the middle.

[0019] in: 100. Base; 101. Liquid outlet; 102. Liquid inlet; 200. Solenoid valve assembly; 210. Solenoid coil; 220. Valve stem; 221. Sealing section; 222. Second spring; 223. Pressing section; 230. Action part; 231. Piston; 232. Sliding sleeve; 233. Magnetic sheet; 234. First spring; 235. Sealing plate; 236. Air bag; 237. Connecting ring; 240. Valve body; 241. Sealing sleeve; 250. First chamber; 260. Second chamber. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, 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 to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In some embodiments, reference Figures 1 to 3 The combined electromagnetic regulating valve includes a base 100 and an electromagnetic valve assembly 200 installed on the base 100. The electromagnetic valve assembly 200 includes a plurality of electromagnetic valves arranged side by side. The number of the electromagnetic valves can be selected from 2 to 6, and the number of the electromagnetic valves can be increased or decreased according to actual needs.

[0024] The solenoid valve includes a valve body 240, a valve stem 220 and an electromagnetic coil 210. The valve body 240 has a flow channel inside, at least part of the structure of the valve stem 220 is located in the flow channel, a sealing sleeve 241 is provided in the flow channel, and the valve stem 220 can fit with the end of the sealing sleeve 241 to close the flow channel. The valve stem 220 is slidably arranged inside the valve body 240, and the electromagnetic coil 210 is arranged on one side of the valve body 240. The electromagnetic coil 210 is configured to drive the valve stem 220 to move closer to the sealing sleeve 241 when it is energized. It should be noted that gas or liquid can pass through the solenoid valve, and the following description takes liquid as an example.

[0025] Reference Figure 3 , the liquid enters the flow channel from the liquid inlet 102 at the bottom of the valve body 240. When the valve stem 220 and the sealing sleeve 241 are in a separated state, the liquid can flow out from the liquid outlet 101 through the flow channel. At this time, the solenoid valve is in an open state; when the valve stem 220 and the sealing sleeve 241 are in a fitted state, the liquid cannot flow out from the liquid outlet 101 through the flow channel. At this time, the solenoid valve is in a closed state.

[0026] Reference Figure 5 and Figure 6 , an end of the valve stem 220 located inside the flow channel is provided with an action part 230, and the action part 230 includes a magnetic sheet 233, a sleeve 232 and an elastic member. Among them, the magnetic sheet 233 is fixedly arranged on the top wall of the flow channel; the sleeve 232 is located below the magnetic sheet 233, the sleeve 232 is sleeved on the valve stem 220 and is slidably connected to the valve stem 220, and the sleeve 232 can be attracted to the magnetic sheet 233; the two ends of the elastic member are respectively connected to the sleeve 232 and the bottom of the valve stem 220, and the elastic member can pull the sleeve 232 and the magnetic sheet 233 apart after the valve stem 220 is attached to the sealing sleeve 241.

[0027] Specifically, in this embodiment, after the electromagnetic coil 210 is energized, the valve stem 220 is attracted to move downward until the bottom of the valve stem 220 blocks the sealing sleeve 241. In this process, the valve stem 220 drives the elastic member to lengthen, and the elastic member exerts a pulling force on the valve stem 220 to hinder the valve stem 220 from moving downward, thereby reducing the impact force of the bottom of the valve stem 220 on the sealing sleeve 241, reducing the wear of the contact part between the bottom of the valve stem 220 and the sealing sleeve 241, extending the service life of the valve stem 220 and the sealing sleeve 241, and ensuring the sealing performance of the electromagnetic valve. Further, when the bottom of the valve stem 220 and the sealing sleeve 241 are fitted, since the elastic member is stretched, the pulling force of the elastic member is greater than the attraction between the magnetic sheet 233 and the sliding sleeve 232, and the elastic member pulls the sliding sleeve 232 downward. In this process, the resistance of the elastic member to the valve stem 220 disappears, and the valve stem 220 can further press the sealing sleeve 241 to ensure the sealing performance of the electromagnetic valve. In this example, the impact force of the bottom of the valve stem 220 on the sealing sleeve 241 is released in sections, which has a buffering effect, reducing the impact on the sealing sleeve 241 and reducing wear, while ensuring that the sealing sleeve 241 can be subjected to sufficient compression force to ensure sealing performance.

[0028] In some embodiments, the action portion 230 also includes a piston 231, which is fixedly connected to the sleeve 232, and the edge of the piston 231 is in contact with the inner wall of the flow channel. The piston 231 is configured to move toward the side of the sealing sleeve 241 under the drive of the sleeve 232, so that a pressure chamber is formed between the piston 231 and the sealing sleeve 241.

[0029] In the above embodiment, the solenoid valve is normally open. Liquid will exist in the flow channel before the solenoid valve is closed. The sliding sleeve 232 drives the piston 231 to move downward, squeezing the liquid in the flow channel, so that a high-pressure chamber is formed between the piston 231 and the sealing sleeve 241. The high-pressure chamber can increase the pressure of the bottom of the valve stem 220 on the sealing sleeve 241, which helps to improve the sealing performance.

[0030] In some embodiments, reference Figure 5 and Figure 6 The action part 230 further includes a sealing plate 235, an airbag 236 and a connecting ring 237. The sealing plate 235 is fixedly arranged at the bottom of the valve stem 220. The connecting ring 237 is fixedly arranged at the bottom of the sealing plate 235, and the connecting ring 237 can be fitted with the end of the sealing sleeve 241. Two airbags 236 are provided, and the two airbags 236 are respectively located at the inner side and the outer side of the sealing sleeve 241, and the two airbags 236 are connected through the connecting ring 237.

[0031] Specifically in this embodiment, during the downward movement of the valve stem 220, the sealing plate 235 is driven to make the two airbags 236 respectively fit the inner side and the outer side of the sealing sleeve 241. The airbags 236 are made of elastic material, such as rubber. After being squeezed, the airbags 236 produce a certain amount of deformation and fit closely with the sealing sleeve 241, thereby enhancing the sealing performance.

[0032] In addition, the solenoid valve in the prior art has a high risk of leakage in some cases, such as when the pressure difference between the two sides of the valve stem is too large, which affects the safety of the solenoid control valve. Figure 6 When the sealing plate 235 is fitted with the sealing sleeve 241, a first chamber 250 and a second chamber 260 are formed inside the flow channel, and the second chamber 260 is connected to the external liquid. Since the two air bags 236 are connected to each other, the two air bags 236 can adjust the pressure difference between the first chamber 250 and the second chamber 260 when the external liquid pressure fluctuates, so that the pressure difference between the first chamber 250 and the second chamber 260 is reduced, thereby improving the impact resistance of the fitting part of the sealing plate 235 and the sealing sleeve 241, and preventing the leakage of the solenoid valve caused by the sudden change of liquid pressure in the second chamber 260.

[0033] In some embodiments, both inner and outer sides of the end of the sealing sleeve 241 are provided with chamfered structures, the airbag 236 is an annular structure and its cross section is a D-shaped structure, and the side wall of the airbag 236 can fit with the chamfered structure. The plane side of the airbag 236 fits with the chamfered structure, and the two airbags 236 and the connecting ring 237 completely wrap and seal the end of the sealing sleeve 241, thereby enhancing the sealing performance and preventing leakage. Specifically, the two airbags 236 can be integrally formed, and the connecting ring 237 is located inside the airbag structure. Such a configuration allows the sealing plate 235 and the sealing sleeve 241 to fit at the parts thereof that are elastic, thereby further enhancing the sealing performance.

[0034] In some embodiments, the connecting ring 237 is a hollow structure, and through holes are provided on the inner and outer surfaces of the connecting ring 237, and the connecting ring 237 is connected to the airbag 236 through the through holes. The connecting ring 237 is made of a hard material to prevent deformation under the pressure of the sealing plate 235 to block the through holes and affect the flow of gas between the airbags 236.

[0035] In some embodiments, the elastic member includes a first spring 234, and the first spring 234 is sleeved on the valve stem 220. A sleeve may be provided at the bottom of the first spring 234, and the bottom of the first spring 234 is connected to the sealing plate 235 through the sleeve.

[0036] In some embodiments, the valve body 240 has a reset cavity, the part of the valve stem 220 located in the reset cavity is sleeved with a second spring 222, the part of the valve stem 220 located in the reset cavity is fixedly connected with a connecting piece, and the second spring 222 is respectively connected to the connecting piece and the top wall of the reset cavity. The second spring 222 has a pulling force, and when the electromagnetic coil 210 is powered off, the second spring 222 pulls the valve stem 220 to move up and reset.

[0037] In some embodiments, the valve stem 220 includes a blocking section 221 and a pressing section 223 which are arranged away from each other, the blocking section 221 can fit with the end of the sealing sleeve 241, and the pressing section 223 can be attracted by the electromagnetic coil 210. The pressing section 223 can be made of materials such as iron, stainless steel, and nickel steel that can be attracted by magnets.

[0038] In some embodiments, the solenoid valve is a normally open solenoid valve. When the solenoid valve is in the open state, the pressing section 223 is located above the electromagnetic coil 210, and the cross-sectional area of ​​the pressing section 223 is larger than the cross-sectional area of ​​the valve stem 220 structure below it. When the electromagnetic coil 210 is energized, a magnetic force is generated. Under the action of the magnetic force, the electromagnetic coil 210 attracts the pressing section 223, so that the entire valve stem 220 moves downward to drive the blocking section 221 to block the sealing sleeve 241.

[0039] In some embodiments, reference Figure 4 The base 100 has a total liquid inlet channel and a total liquid outlet channel. The liquid inlet end of the solenoid valve is connected to the total liquid inlet channel, and the liquid outlet end of the solenoid valve is connected to the total liquid outlet channel. The base 100 has a liquid outlet 101 and a liquid inlet 102. The flow rate and pressure of the liquid outlet 101 are adjusted by controlling the opening and closing of each solenoid valve.

[0040] The working process of the combined electromagnetic regulating valve in the above embodiment is as follows: the electromagnetic valve is a normally open electromagnetic valve. When the electromagnetic valve needs to be closed, the electromagnetic coil 210 is energized to attract the valve stem 220 to move downward until the sealing plate 235 and the air bag 236 at the bottom of the valve stem 220 block the sealing sleeve 241. In this process, the valve stem 220 drives the first spring 234 to lengthen, and conversely, the first spring 234 applies a pulling force to the valve stem 220 to hinder the valve stem 220 from moving downward, thereby reducing the sealing plate 235 and the air bag 236 at the bottom of the valve stem 220. 5 and the impact force of the airbag 236 on the sealing sleeve 241, reducing the wear of the contact part between the bottom of the valve stem 220 and the sealing sleeve 241; when the bottom of the valve stem 220 and the sealing sleeve 241 are in contact, since the first spring 234 is stretched, the pulling force of the first spring 234 is greater than the attraction between the magnetic sheet 233 and the sliding sleeve 232, and the first spring 234 pulls the sliding sleeve 232 downward. In this process, the valve stem 220 can further press the sealing sleeve 241 to ensure the sealing performance of the solenoid valve. The sliding sleeve 232 drives the piston 231 to move downward, so that a high-pressure chamber is formed between the piston 231 and the sealing sleeve 241, which helps to improve the sealing performance. The two airbags 236 can also reduce the pressure difference between the first chamber 250 and the second chamber 260, preventing the leakage of the solenoid valve caused by the sudden change of the liquid pressure in the second chamber 260.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A combined electromagnetic regulating valve, characterized in that: It comprises a base (100) and a solenoid valve assembly (200) mounted on the base (100), wherein the solenoid valve assembly (200) comprises a plurality of solenoid valves arranged side by side; Wherein, the solenoid valve comprises a valve body (240), a valve stem (220) and a solenoid coil (210); The valve body (240) has a flow channel inside, at least a part of the structure of the valve stem (220) is located in the flow channel, a sealing sleeve (241) is provided in the flow channel, and the valve stem (220) can fit with the end of the sealing sleeve (241) to close the flow channel; The valve stem (220) is slidably disposed inside the valve body (240), the electromagnetic coil (210) is disposed on one side of the valve body (240), and the electromagnetic coil (210) is configured to drive the valve stem (220) to move closer to the sealing sleeve (241) when it is energized; An action portion (230) is provided at one end of the valve stem (220) located inside the flow channel, and the action portion (230) comprises a magnetic sheet (233), a sliding sleeve (232) and an elastic member; Wherein, the magnetic sheet (233) is fixedly arranged on the top wall of the flow channel; The sliding sleeve (232) is located below the magnetic sheet (233), the sliding sleeve (232) is sleeved on the valve stem (220) and is slidably connected to the valve stem (220), and the sliding sleeve (232) can be attracted to the magnetic sheet (233); Two ends of the elastic member are respectively connected to the sliding sleeve (232) and the bottom of the valve stem (220), and the elastic member can pull the sliding sleeve (232) and the magnetic sheet (233) apart after the valve stem (220) and the sealing sleeve (241) are in contact with each other; The action portion (230) further comprises a piston (231), wherein the piston (231) is fixedly connected to the sliding sleeve (232), an edge of the piston (231) is in contact with an inner wall of the flow channel, and the piston (231) is configured to be able to move toward one side of the sealing sleeve (241) under the drive of the sliding sleeve (232), so that a pressure chamber is formed between the piston (231) and the sealing sleeve (241); The action portion (230) further comprises a sealing plate (235), an air bag (236) and a connecting ring (237); Wherein, the sealing plate (235) is fixedly arranged at the bottom of the valve stem (220); The connecting ring (237) is fixedly arranged at the bottom of the sealing plate (235), and the connecting ring (237) can fit with the end of the sealing sleeve (241); Two airbags (236) are provided, and the two airbags (236) are respectively located on the inner side and the outer side of the sealing sleeve (241), and the two airbags (236) are connected via the connecting ring (237).

2. The combined electromagnetic regulating valve according to claim 1, characterized in that: Chamfered structures are provided on both inner and outer sides of the end of the sealing sleeve (241); the airbag (236) is an annular structure and its cross-section is a D-shaped structure; the side wall of the airbag (236) can fit in the chamfered structure.

3. The combined electromagnetic regulating valve according to claim 1, characterized in that: The connecting ring (237) is a hollow structure, and through holes are provided on both the inner ring surface and the outer ring surface of the connecting ring (237), and the connecting ring (237) is connected to the airbag (236) through the through holes.

4. The combined electromagnetic regulating valve according to claim 1, characterized in that: The elastic member comprises a first spring (234), and the first spring (234) is sleeved on the valve stem (220).

5. The combined electromagnetic regulating valve according to claim 1, characterized in that: The valve body (240) has a reset cavity, a portion of the valve stem (220) located in the reset cavity is sleeved with a second spring (222), a portion of the valve stem (220) located in the reset cavity is fixedly connected to a connecting plate, and the second spring (222) is respectively connected to the connecting plate and the top wall of the reset cavity.

6. The combined electromagnetic regulating valve according to claim 1, characterized in that: The valve stem (220) comprises a blocking section (221) and a pressing section (223) which are arranged away from each other, the blocking section (221) can fit with the end of the sealing sleeve (241), and the pressing section (223) can be attracted by the electromagnetic coil (210).

7. The combined electromagnetic regulating valve according to claim 6, characterized in that: The solenoid valve is a normally open solenoid valve. When the solenoid valve is in an open state, the pressing section (223) is located above the solenoid coil (210), and the cross-sectional area of ​​the pressing section (223) is larger than the cross-sectional area of ​​the valve stem (220) structure below it.

8. The combined electromagnetic regulating valve according to claim 1, characterized in that: The base (100) has a total liquid inlet channel and a total liquid outlet channel, the liquid inlet end of the solenoid valve is connected to the total liquid inlet channel, and the liquid outlet end of the solenoid valve is connected to the total liquid outlet channel.

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