A solenoid valve

Abstract

The present invention relates to a solenoid valve, comprising a main pipeline, wherein both ends of the main pipeline are respectively provided with an inlet and an outlet; a control pipeline, wherein the control pipelines are 2N, and the 2N control pipelines are symmetrically connected to both sides of the main pipeline, wherein N is a natural number greater than or equal to 1; the 2N control pipelines, and the control pipelines located on the same side of the main pipeline are connected through a connecting pipe, and each of the connecting pipes is connected to a delivery pipe with a flow outlet; a pull rod and an elastic member connected to the pull rod are provided in each of the control pipelines, and an electromagnet for adsorbing the pull rod is also provided in each of the control pipelines, and when the elastic member is forced to move up and down along the control pipeline, the pull rod approaches or moves away from the electromagnet; the length of the main pipeline is 200mm-400mm. The solenoid valve of the present invention can realize the flow of viscous oil regardless of whether the electromagnet is powered on or off.

Description

Technical Field

[0001] The invention belongs to the technical field of control in liquid circulation, and in particular relates to a solenoid valve. Background Art

[0002] The existing solenoid valve, in use, opens or closes the flow of liquid by the electromagnet. When the diameter of the liquid pipeline is large, the distance between the electromagnet and the adsorbed object is long, and a long reaction time is required to adsorb and achieve opening or closing.

[0003] At the same time, when the existing solenoid valve is used in oil field pumping units, it is difficult to meet the production needs of oil fields in large-caliber, high-pressure, high-sand and high-wax environments. For oil fields, due to the presence of gravel and high wax content in the oil when the liquid is switched, the liquid has high viscosity, many impurities, and hard objects, which makes it easy to get stuck, and the response time in the liquid flow is long.

[0004] In the prior art, when the solenoid valve used in oil fields fails to work or the relay is damaged, the pull rod inside the relay cannot work, and the transportation of the oil fields will be forced to stop. Summary of the invention

[0005] In order to solve the problem that the attraction force of the prior art solenoid valve decreases as the distance from the sucked object increases, the present invention provides a solenoid valve that uses the pressure of the liquid flow itself to squeeze the valve body, thereby driving the spring to move, thereby changing the distance between the valve body and the magnet, thereby achieving control of the liquid flow.

[0006] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0007] A solenoid valve, comprising:

[0008] A main pipeline, wherein an inlet and an outlet are respectively provided at both ends of the main pipeline;

[0009] Control pipelines, the number of the control pipelines being 2N, and the 2N control pipelines being symmetrically connected to both sides of the main pipeline, wherein N is a natural number greater than or equal to 1;

[0010] The 2N control pipelines are connected to each other on the same side of the main pipeline through a connecting pipe, and each of the connecting pipes is connected to a delivery pipe with a flow outlet;

[0011] Each of the control pipelines is provided with a pull rod and an elastic member connected to the pull rod, and each of the control pipelines is also provided with an electromagnet for attracting the pull rod. When the elastic member is forced to move up and down along the control pipeline, the pull rod approaches or moves away from the electromagnet;

[0012] The length of the main pipe is 200mm-400mm.

[0013] Furthermore, a pull rod end is provided at the connection between the pull rod and the elastic member, and the pull rod end is used to block the control pipeline, and the pull rod end assists the pull rod in blocking the control pipeline.

[0014] Furthermore, the pull rod end is a truncated cone structure with a gradually increasing cross-sectional area. In the truncated cone structure, the end with a small cross-sectional area is connected to the pull rod, and the end with a large cross-sectional area is connected to the elastic member. The pull rod end with the truncated cone structure gradually fits tightly with the inside of the control pipeline due to the gradual increase in the cross-sectional area of ​​the cone, thereby avoiding oil leakage.

[0015] Furthermore, it also includes a first fixed plate, and the 2N control pipelines are all fixed on the first fixed plate, and the main pipeline is arranged below the first fixed plate. Through the first fixed plate, on the one hand, the control pipelines are arranged on a plate, and on the other hand, when liquid flows in the control pipelines, the fixed plate has a supporting function.

[0016] Furthermore, it also includes a second fixed plate arranged above the first fixed plate, and each of the control pipelines is divided into two sections by the first fixed plate and the second fixed plate, and the two sections are respectively fixed on the upper surface of the first fixed plate and the lower surface of the second fixed plate, dividing the control pipeline into two sections and fixing them on different fixed plates respectively, which is convenient for controlling the pipeline.

[0017] Furthermore, it also includes a positioning ring sleeved on the outside of the elastic member or the pull rod, and the positioning ring is arranged between the first fixed plate and the second fixed plate. The positioning ring can fix the movement of the elastic member or the pull rod on the one hand, and on the other hand, it plays a role in supporting the first fixed plate and the second fixed plate.

[0018] Furthermore, the control pipeline is connected to an electromagnet mounting sleeve, and the electromagnet is provided on the inner wall of the electromagnet mounting sleeve. Compared with embedding the electromagnet in the control pipeline, the electromagnet mounting sleeve is convenient to install and easy to disassemble.

[0019] Furthermore, it also includes an end cover, which is connected to the pull rod and is arranged on the electromagnet installation sleeve. The end cover can facilitate the disassembly of the electromagnet installation sleeve, and the end cover can drive the pull rod to move.

[0020] Furthermore, among the 2N control pipelines, in the control pipeline near the entrance of the main pipeline, the pull rod is set at the connection between the control pipeline and the main pipeline. Through this setting method, the defect that the control pipeline near the main pipeline is simultaneously transporting oil, making the metering device 8 unable to move, is avoided.

[0021] Furthermore, it also includes a blocking plate and a plug, and the plug passes through the blocking plate and is connected to the elastic member. The elastic member can be blocked in the control pipeline through the blocking plate and the plug, and the elastic member can be easily disassembled for easy maintenance.

[0022] Beneficial effects of the present invention:

[0023] In the present invention, the flow of oil in the oil field can be achieved regardless of whether the electromagnet is energized or not. When the electromagnet is not energized, the oil has flow pressure, which squeezes the elastic member upward or downward to achieve the transportation of the oil; when energized, in conjunction with the metering device, the flow speed of the oil can be better controlled.

[0024] When the present invention is used, due to the pressure of the oil, the oil with high viscosity that is easy to clog the pipeline can be transported through its own squeezing force, thereby avoiding clogging in the pipeline and improving the response time.

[0025] The solenoid valve in the present invention, by utilizing the pressure of the viscous liquid flowing, can control whether the pull rod can be squeezed when the power is on or off, drive the spring on the pull rod to move, and then make the spring on the pull rod compressed or stationary, so as to achieve the effect of the pull rod being pushed or stationary, and the pipeline being connected or disconnected. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a solenoid valve provided by the present invention;

[0027] Figure 2 It is a structural schematic diagram of the solenoid valve provided by the present invention and the metering device used in conjunction with each other;

[0028] Figure 3 It is a structural schematic diagram of the control pipeline group provided by the present invention;

[0029] Figure 4 It is a left view of a working state provided by the present invention;

[0030] Figure 5 It is a right view of a working state provided by the present invention;

[0031] Figure 6 It is a left view of another working state provided by the present invention;

[0032] Figure 7 It is a right side view in another working state provided by the present invention;

[0033] In the figure:

[0034] 1. Main pipeline; 2. Inlet; 3. Outlet; 4. Control pipeline; 401. First control pipeline; 402. Second control pipeline; 403. Third control pipeline; 404. Fourth control pipeline; 5. Connecting pipe; 501. First connecting pipe; 502. Second connecting pipe; 6. Outlet; 7. Delivery pipe; 701. First delivery pipe; 702. Second delivery pipe; 8. Metering device; 9. Pull rod; 10. Elastic member; 11. Electromagnet; 12. End of pull rod; 13. First fixing plate; 14. Second fixing plate; 15. Positioning ring; 16. Support column; 17. Electromagnet mounting sleeve; 18. End cover; 19. Plug plate; 20. Plug. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] See attached Figure 1-3 As shown, the solenoid valve in this embodiment includes a main pipe 1 arranged in the oil field, and an inlet 2 and an outlet 3 are respectively arranged at both ends of the main pipe 1. The main pipe 1 is used for the flow of oil from the oil field. In use, the main pipe 1 is directly placed in the oil field, and the oil in the oil field flows into the main pipe through the inlet 2 of the main pipe 1 to transmit the oil. In this embodiment, a plurality of connecting ports are symmetrically arranged on both sides of the main pipe 1, and a control pipe 4 is arranged on each connecting port. Specifically, there are 2N control pipes 4, and at this time, there are also 2N connecting ports; in this embodiment, the control pipes 4 are symmetrically arranged, and the oil can flow into each control pipe 4 evenly during the flow, and the oil flow speed in the control pipes 4 on both sides at the same position is the same.

[0037] In this embodiment, N is a natural number greater than or equal to 1, and N is preferably 2.

[0038] In this embodiment, the control pipelines 4 located on the same side of the main pipeline 1 are connected through a connecting pipe 5, and each connecting pipe 5 is connected to a delivery pipe 7 with an outlet 6. Since there are 2N control pipelines 4, the number of delivery pipes 7 is 2 (N-1), and the 2 (N-1) delivery pipes 7 are also symmetrically arranged on both sides of the main pipeline;

[0039] This embodiment also includes a metering device 8 for calculating the oil field output. The metering device 8 is provided with a piston. When in use, the upper and lower ends of the piston are respectively connected to the delivery pipes 7 on both sides of the main pipeline 1. By using the metering device 8 in conjunction with the solenoid valve in this embodiment, the solenoid valve in this embodiment can be fully utilized to improve its change in the flow direction of the oil in the pipeline. Of course, the metering device 8 in this embodiment can also be replaced by other devices. In this case, the solenoid valve in this embodiment can work in conjunction with the flow of other devices.

[0040] In this embodiment, refer to the attached Figure 1-3 As shown, each control pipeline 4 is provided with a pull rod 9 and an elastic member 10 connected to the pull rod 9, and each control pipeline 4 is also provided with an electromagnet 11 for adsorbing the pull rod 9. When the elastic member 10 is forced to move up and down along the control pipeline 4, the pull rod 9 approaches or moves away from the electromagnet 11. At this time, by changing the position of the pull rod 9, it is possible to adjust whether the control pipeline 4 is connected, thereby realizing the connection and disconnection between the control pipeline 4 and the main pipeline 1; for example, when power is turned on, the pull rod 9 is adsorbed by the electromagnet 11, and the pull rod 9 is forced to move, that is, the oil pressure exerts force on the elastic member 10. , one end of the control pipeline 4 near the pull rod 9 is still blocked; when the power is off, the electromagnet 11 cannot attract the pull rod 9. At this time, when the elastic member 10 is squeezed and compressed by the oil pressure impact, it can drive the pull rod 9 to move upward or downward, thereby realizing the conduction of the control pipeline 4 body, and then realizing the conduction between the control pipeline 4 and the main pipeline 1, which is convenient for the oil in the main pipeline 1 to flow in. According to this phenomenon, by changing the position of the pull rod 9 and energizing different electromagnets 11 at the same time, the conduction inside different control pipelines 4 and between the control pipeline 4 and the main pipeline 1 can be realized.

[0041] In this embodiment, in the control pipeline 4 connected to both sides of the connecting pipe 5, the pull rod 9 and the elastic member 10 are arranged in opposite directions; that is, when the pull rod 9 in the control pipeline 4 on the left side of the connecting pipe 5 is arranged at the upper part, the elastic member 10 in the control pipeline 4 on the right side of the connecting pipe 5 is arranged at the upper part. If the pull rod 9 and the elastic member 10 are arranged in the same way, when the power is off, when the oil enters, if both elastic members 10 are close to the connecting pipe 5, the elastic members 10 will be squeezed, the pull rod 9 will move downward at the same time, and the oil will flow out through the connecting pipe 5; if the pull rod 9 is arranged near the connecting pipe 5 at the same time, the oil will not easily push the pull rod 9, and the oil will still move.

[0042] In this embodiment, the length of the main pipeline 1 is 200mm-400mm. For general oil field openings, the main pipeline 1 can be set to 200mm-400mm. When the length of the main pipeline 1 is less than 200mm, the precision requirement of the main pipeline 1 is high, especially for oil fields, so it is not easy to process, and the main pipeline 1 is too short, the oil flows too fast, and when the function of changing the flow in this embodiment is realized, the working process is long, and some oil is easy to leak out; when the length of the main pipeline 1 is greater than 400mm, due to the small oil field opening, the length is too long, the applicability is not strong, and it is difficult to place in the oil field, and it is not convenient to disassemble and install.

[0043] When the solenoid valve in this embodiment is used, the oil first flows in through the inlet 2 of the main pipeline 1, and then by turning on different electromagnets 11, the oil enters different delivery pipes 7 through different control pipelines 4, and enters the metering device 8 through the outflow port 6 of the delivery pipe 7; the oil entering the metering device 8 is moved up or down by the oil pressure control piston, and under the action of the piston, the oil entering the metering device 8 flows from the outflow port 6 of the delivery pipe 7 into another delivery pipe 7, and then passes through the main pipeline 1 or the control pipeline 4.

[0044] In this embodiment, a plurality of electromagnets 11 cooperate with the main pipeline 1 to make the piston in the metering device 8 move up and down, and thus reciprocate, so as to achieve the purpose of switching the output of oil.

[0045] In this embodiment, when the electromagnet 11 is not energized, the oil reversal and oil circulation can be achieved through the automatic action of the oil pressure.

[0046] In this embodiment, the effect of oil flow pressure is utilized to make oil with high viscosity less likely to be blocked, and the response time is improved, thereby achieving the effect that viscous oil can flow through the solenoid valve regardless of whether it is powered on or not.

[0047] Example 1

[0048] See attached Figure 1-3 As shown, in this embodiment, four control pipelines 4 are included, which specifically include a first control pipeline 401, a second control pipeline 402, a third control pipeline 403 and a fourth control pipeline 404; at this time, the main pipeline 1 extends toward both sides to form four connecting ports, and the four connecting ports are respectively connected to the above four control pipelines 4. The first control pipeline 401 and the fourth control pipeline 404 are arranged on the same side of the main pipeline 1 and are connected through the first connecting pipe 501; the second control pipeline 402 and the third control pipeline 403 are arranged on the same side of the main pipeline 1 and are connected through the second connecting pipe 502; the first connecting pipe 501 is connected to the upper part of the piston in the metering device 8 through the first delivery pipe 701; the second connecting pipe 502 is connected to the lower part of the piston in the metering device 8 through the second delivery pipe 702.

[0049] See attached Figure 3 As shown, the third control line 403 and the fourth control line 404 exit near the inlet 2, and the pull rod 9 is arranged in the third control line 403 and the fourth control line 404 at one end of the control line 4 near the inlet 2, so as to be able to stop the flow of oil in time; if the elastic member 10 is arranged near one end of the inlet 2, then the oil pressure flowing in from the inlet 2 may directly squeeze the elastic member 10, so that the oil enters the third control line 403 and the fourth control line 404, and then enters the first connecting pipe 501 and the second connecting pipe 502. At this time, it is easy to cause the first delivery pipe 701 and the second delivery pipe 702 to act on the piston at the same time, and the piston in the metering device 8 cannot move; at this time, metering cannot be achieved, but the oil can still flow without clogging.

[0050] At this time, if the solenoid valve is used alone without combining with the metering device 8 or other equipment, it will not be blocked at this time, and the oil flow in the solenoid valve is still guaranteed.

[0051] Due to the above-mentioned defects, in this embodiment, preferably, the pull rod 9 is arranged near the inlet 2 , that is, at the connection between the control pipeline 4 and the main pipeline 1 .

[0052] See attached Figure 3 As shown, in this embodiment, the first control pipeline 401 and the second control pipeline 402 are far away from the inlet 2, and the pull rod 9 is set at the top, that is, far away from the connection between the control pipeline 4 and the main pipeline 1.

[0053] The usage process of this embodiment is as follows:

[0054] 1. The oil enters through the inlet 2 of the main pipeline 1;

[0055] Working status 1: Refer to the attached Figure 4-5 As shown, the electromagnets 11 in the second control pipeline 402 and the fourth control pipeline 404 are both energized, and the oil squeezes the elastic member 10 in the third control pipeline 403 to compress and push open the pull rod in the third control pipeline 403, and then the oil enters the second connecting pipe 502 and flows out through the outflow port 6 on the second delivery pipe 702, enters the lower end of the piston in the metering device 8, and pushes the piston upward, and the oil in the piston enters from the outflow port 6 of the first delivery pipe 701 through the upper end of the piston, and enters the second connecting pipe 502. Since the fourth control pipeline 404 is energized, the electromagnet 11 is sucked by the pull rod 9, and then the oil can only push the pull rod 9 in the first control pipeline 401, and continue to flow downstream into the main pipeline 1, and flow out from the outlet 3 of the main pipeline 1.

[0056] Working status 2: Refer to the attached Figure 6-7As shown, when the electromagnets 11 in the first control pipeline 401 and the third control pipeline 403 are energized, the pull rods 9 in the first control pipeline 401 and the third control pipeline 403 are both attracted by the electromagnets 11, and the oil can only push the pull rod 9 in the fourth control pipeline 404, so that the oil enters the first connecting pipe 501, and then flows out from the outflow port 6 of the first delivery pipe 701 into the upper part of the piston of the metering device 8, pushing the piston downward, and the oil in the piston will enter the second connecting pipe 502 through the outflow port 6 on the second delivery pipe 702. At this time, the oil continues to move, flows to the main pipeline 1 through the second control pipeline 402, and then flows out from the outlet 3 of the main pipeline 1.

[0057] In this embodiment, by controlling the simultaneous switching of two asymmetrically arranged electromagnets among the four electromagnets 11, the oil flows in and out through different control pipelines 4 and from different positions in the metering device 8, thereby achieving the purpose of reversing oil delivery.

[0058] In this embodiment, when the four electromagnets 11 are powered off at the same time, the pull rod 9 does not work. At this time, the oil on both sides flows in at the same time, which easily causes the two connecting pipes 5 and the two delivery pipes 7 to have oil flowing into the metering device 8 at the same time. At this time, the piston in the metering device 8 cannot move, resulting in the metering device 8 being unable to measure, but the oil can still move, that is, the entire device will not be unable to move due to power failure.

[0059] Example 2

[0060] See attached Figure 1-3 As shown, as a further improvement of Example 1, in this embodiment, a tie rod end 12 is provided at the connection between the tie rod 9 and the elastic member 10, and the maximum cross-section of the tie rod end 12 matches the inner diameter of the control line 4, so that the tie rod end 12 can block the control line 4 to prevent the flow of oil.

[0061] Furthermore, in the present embodiment, the tie rod end 12 is a truncated cone structure with a gradually increasing cross-sectional area, in which the end with a small cross-sectional area is connected to the tie rod 9, and the end with a large cross-sectional area is connected to the elastic member 10. Compared with a cylindrical tie rod end 12 or a tie rod end 12 with a uniform cross-sectional area, in the present embodiment, due to the gradually increasing cross-sectional area, from top to bottom, the side of the tie rod end 12 forms a slope with a certain angle. When some oil penetrates, the slope forms a certain angle with the inner wall of the control line 4. When the tie rod 9 moves up and down, the contact between the slope and the control line 4 becomes closer and closer, which makes it easy to seal the inside of the control line 4 and reduces the outflow of oil.

[0062] Example 3

[0063] See attached Figure 1-3As shown, in this embodiment, a first fixing plate 13 is also included, and 2N control pipelines 4 are all fixed on the first fixing plate 13, and the main pipeline 1 is arranged below the first fixing plate 13. The stability of the control pipeline 4 is fixed by the first fixing plate 13. When the pull rod 9 in the control pipeline 4 moves up and down, the stability of the control pipeline 4 deteriorates due to the internal movement of the control pipeline 4, and it is easy to shake left and right. Since they are all arranged on the first fixing plate 13, the first fixing plate 13 has the same function as the foundation, which reduces the shaking during its movement.

[0064] See attached Figure 1 As shown, in this embodiment, it also includes a second fixed plate 14 arranged above the first fixed plate 13, and each control pipeline 4 is divided into two sections by the first fixed plate 13 and the second fixed plate 14, and the two sections are respectively fixed on the upper surface of the first fixed plate 13 and the lower surface of the second fixed plate 14; at the same time, it also includes a positioning ring 15 that is sleeved on the outside of the elastic member 10 or the pull rod 9, and the positioning ring 15 is arranged between the first fixed plate 13 and the second fixed plate 14.

[0065] In this embodiment, gaskets may be further provided at the contact points between the positioning ring 15 and the first fixing plate 13 and the second fixing plate 14 to improve the sealing performance.

[0066] By adding the positioning ring 15, it is equivalent to that the two fixed plates are fixed by the positioning ring 15, and the pipelines at the corresponding upper and lower positions of the two fixed plates are easy to be connected. That is, the positioning ring 15 realizes the positioning of the two fixed plates when connected, avoiding the mutual movement between the two fixed plates during the movement of the pull rod 9; on the other hand, it realizes the connection of the same control pipeline 4 after being segmented.

[0067] In order to improve the stability of the overall structure when the elastic member 10 is stressed and prevent the elastic member 10 from being deflected toward the periphery, in this embodiment, the elastic member 10 is a spring, and a support column 16 is further provided on the pull rod end 12, and the spring is sleeved in the support column 16. When the spring is compressed, due to the presence of the support column 16, it will be mainly compressed along the support column 16 and will not be compressed and deflected to the side of the pull rod end 12.

[0068] For the convenience of installation, in this embodiment, the control pipeline 4 is connected with an electromagnet installation sleeve 17, and the electromagnet 11 is provided on the inner wall of the electromagnet installation sleeve 17. The electromagnet installation sleeve 17 can be connected to the control pipeline 4 by threading. Compared with embedding the electromagnet 11 in the control pipeline 4, the electromagnet installation sleeve 17 is easy to adjust the length, that is, it is easy to adjust the length of the electromagnet 11; the electromagnet installation sleeve 17 can also be directly prepared by the electromagnet 11, which is convenient for production.

[0069] In order to fix the electromagnet installation sleeve 17 and the pull rod 9, an end cover 18 is also included. The end cover 18 is connected to the pull rod 9 and then is arranged on the electromagnet installation sleeve 17. When the pull rod 9 is forced to move upward, the end cover 18 moves upward accordingly; and when the pull rod 9 needs to move downward, the end cover 18 clamps it in the electromagnet installation sleeve 17 to prevent it from moving further downward.

[0070] A gasket is added at the connection between the electromagnet mounting sleeve 17 and the end cover 18 to improve the sealing performance.

[0071] In this embodiment, in order to protect the elastic member 10, a plugging plate 19 and a plugging head 20 are also included. The plugging head 20 passes through the plugging plate 19 and is connected to the elastic member 10. The plugging plate 19 and the plugging head 20 can seal the elastic member 10 to prevent the oil in the control pipeline 4 from leaking through the elastic member 10 and causing pollution.

[0072] When the pull rod 9 moves, the end of the pull rod is covered on the positioning ring 15, and the elastic member 10 is placed in the electromagnet mounting sleeve 17 of the end cover 18, and the plug 20 seals the elastic member 10 to prevent oil leakage.

[0073] In this embodiment, a plurality of connection ports are symmetrically provided on both sides of the main pipeline 1, and an inlet and an outlet are respectively provided at both ends of the main pipeline 1; in order to control the flow of oil, in this embodiment, a control pipeline is respectively connected to each connection port, and the number of control pipelines is 2N, where N is a natural number greater than or equal to 1, in order to form symmetrical control pipelines, which facilitate the uniformity of the outflowing oil.

[0074] During use, when the electromagnet 11 is energized, the electromagnet 11 absorbs the pull rod 9, thereby isolating the main line 1 and the control line 4, causing the liquid in the main line 1 to be unable to pass through, achieving a temporary blockage. At this time, the liquid is forced to flow into other lines, and then into the de-energized control line 4. The flow pressure of the liquid squeezes the pull rod 9 in the de-energized control line 4 and pushes it away from the electromagnet 11, so that the de-energized control line 4 is connected to the main line 1, achieving the effect of liquid entering the de-energized control line 4.

[0075] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A solenoid valve, characterized in that: include: A main pipe (1), wherein two ends of the main pipe (1) are respectively provided with an inlet (2) and an outlet (3); Control pipelines (4), the number of the control pipelines (4) being 2N, the 2N control pipelines (4) being symmetrically connected to two sides of the main pipeline (1), respectively, wherein N is a natural number greater than or equal to 1; The 2N control pipelines (4) and the control pipelines (4) located on the same side of the main pipeline (1) are connected via a connecting pipe (5), and each of the connecting pipes (5) is connected to a delivery pipe (7) with a flow outlet (6); Each of the control pipelines (4) is provided with a pull rod (9) and an elastic member (10) connected to the pull rod (9), and each of the control pipelines (4) is also provided with an electromagnet (11) for attracting the pull rod (9). When the elastic member (10) is forced to move up and down along the control pipeline (4), the pull rod (9) moves closer to or farther from the electromagnet (11); The length of the main pipe (1) is 200 mm-400 mm; A tie rod end (12) is provided at the connection between the tie rod (9) and the elastic member (10), and the tie rod end (12) is used to block the control pipeline (4); The pull rod end (12) is a truncated cone structure with a gradually increasing cross-sectional area, wherein the end with a small cross-sectional area is connected to the pull rod (9), and the end with a large cross-sectional area is connected to the elastic member (10).

2. A solenoid valve according to claim 1, characterized in that: It also comprises a first fixing plate (13), the 2N control pipelines (4) are all fixed on the first fixing plate (13), and the main pipeline (1) is arranged below the first fixing plate (13).

3. The solenoid valve according to claim 1, characterized in that: It also includes a second fixing plate (14) disposed above the first fixing plate (13), and each of the control pipelines (4) is divided into two sections by the first fixing plate (13) and the second fixing plate (14), and the two sections are respectively fixed on the upper surface of the first fixing plate (13) and the lower surface of the second fixing plate (14).

4. A solenoid valve according to claim 3, characterized in that: It also includes a positioning ring (15) sleeved outside the elastic member (10) or the pull rod (9), wherein the positioning ring (15) is arranged between the first fixing plate (13) and the second fixing plate (14).

5. A solenoid valve according to claim 4, characterized in that: The elastic member (10) is a spring, and a support column (16) is also provided on the end of the pull rod (12), and the spring is sleeved in the support column (16).

6. A solenoid valve according to any one of claims 1 to 5, characterized in that: The control pipeline (4) is connected to an electromagnet mounting sleeve (17), and the electromagnet (11) is provided on the inner wall of the electromagnet mounting sleeve (17).

7. A solenoid valve according to claim 6, characterized in that: It also includes an end cover (18), which is connected to the pull rod (9) and then disposed on the electromagnet mounting sleeve (17).

8. A solenoid valve according to any one of claims 1 to 5, characterized in that: Among the 2N control pipelines (4), in a control pipeline (4) near an inlet (2) of the main pipeline (1), a pull rod (9) is arranged at a connection between the control pipeline (4) and the main pipeline (1).

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