Pressure self-adaptive bidirectional sealing electromagnetic stop valve

Abstract

The invention belongs to the related technical field of stop valves, and discloses a pressure self-adaptive bidirectional sealing electromagnetic stop valve which comprises an electromagnet, an electromagnet connector and a stop valve body, and the electromagnet is connected with the stop valve body through the electromagnet connector; the stop valve comprises a valve body, a guide pressing plate, a guide screw plug assembly, an ejector rod, a valve seat, a valve element, a valve sleeve and a lower pressing plate. The through-flow hole is formed in the valve element, so that the stop valve has a self-adaptive adjusting function under different pressures, the problem that the sealing specific pressure of the stop valve is increased along with the increase of the external pressure is solved, and the light weight of the stop valve is effectively achieved. Meanwhile, the special design of the valve element structure enables the stop valve to have a good bidirectional sealing effect, compared with a traditional one-way sealing stop valve, the stop valve is more flexible and more convenient to use, and a high-pressure port and a low-pressure port of the stop valve do not need to be distinguished. Compared with a traditional electromagnetic stop valve, the electromagnetic stop valve is more flexible and more convenient to use, smaller in size and lighter in weight.

Description

Technical Field

[0001] The present invention belongs to the technical field related to globe valves, and more specifically, relates to a pressure - adaptive two - way sealing electromagnetic globe valve. Background Art

[0002] Currently, existing globe valves usually consist of structures such as valve bodies and valve cores, and the opening or closing of the valve port is achieved by the up - and - down movement of the valve core within the valve body. In existing solenoid valves, the opening and closing of the globe valve are controlled by the energization or de - energization of an electromagnet. When the electromagnet is energized, a magnetic force is generated to push the valve core downward or upward to open, achieving the function of fluid passage. When the electromagnet is de - energized, the magnetic force disappears, and under the action of the spring force, the valve core is pushed to move in the reverse direction, realizing the function of flow interception.

[0003] However, in such electromagnetic globe valves, they are designed to intercept and seal only in a single direction. In addition, due to the relatively complex overall structure of the valve body, it is often difficult during the actual processing of the valve body and the overall assembly of the globe valve, resulting in an increase in processing costs. In terms of application, with the increase of the external pressure, the sealing performance of this type of globe valve will decline. To ensure sufficient sealing, the valve needs to be redesigned and the volume and weight of the valve will increase accordingly, which is not conducive to the lightweight of the valve.

[0004] Therefore, there is an urgent need to design a pressure - adaptive two - way sealing electromagnetic globe valve, which has a pressure - adaptive adjustment function, enabling it to maintain good sealing performance under different pressures and greatly reducing the volume and weight of the valve. Summary of the Invention

[0005] Aiming at the above - mentioned defects or improvement requirements of the prior art, the present invention provides a pressure - adaptive two - way sealing electromagnetic globe valve, thereby solving the technical problems that the solenoid valve can only intercept in a single direction and its sealing performance declines with the increase of the external pressure.

[0006] To achieve the above object, the present invention provides a pressure - adaptive two - way sealing electromagnetic globe valve, including an electromagnet, an electromagnet connector, and a globe valve. The electromagnet is connected to the globe valve through the electromagnet connector; the globe valve includes a valve body, a guide pressure plate, a guide plug assembly, a push rod, a valve seat, a valve core, a valve sleeve, and a lower pressure plate; the valve sleeve, the valve seat, the guide plug assembly, and the guide pressure plate are in close contact in sequence and are arranged in the cavity of the valve body; one end of the valve sleeve is in contact with the lower pressure plate, and the other end is in contact with the valve seat; the lower pressure plate is fixedly connected to the valve body by screws; one end of the push rod is in contact with the push - rod groove of the valve core, and the other end passes through the valve seat, the guide bolt assembly, and the guide pressure plate in sequence; the valve core is arranged in the valve sleeve and is in close contact with the inner wall of the cavity of the valve sleeve through a sealing ring; a flow - through hole is arranged in the valve core, and it is in close contact with the valve seat under the action of a spring at its bottom.

[0007] Preferably, the valve body includes a first water inlet / outlet, a second water inlet / outlet, and a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity arranged in sequence. The valve sleeve is arranged in the first, second, and third cavities, the valve seat is arranged in the third cavity, and the guiding pressing plate and the guiding bolt assembly are sequentially arranged in the fourth cavity; the inner wall of the fifth cavity is provided with threads for connecting with the electromagnet connector to achieve axial pressing; the first water inlet / outlet is opened on the periphery of the second cavity, and the second water inlet / outlet is opened on the periphery of the third cavity.

[0008] Preferably, the valve sleeve has a cylindrical shape. A fifth sealing ring groove is opened on its top surface, and a seventh cavity, an eighth cavity, and a valve seat limiting groove are sequentially arranged inside from top to bottom; a plurality of second flow-through windows are evenly distributed along the circumference of the eighth cavity. The eighth cavity is used to accommodate the valve seat and the valve core, and the seventh cavity is used to accommodate the valve core.

[0009] Preferably, the valve core has a cylindrical shape and includes a large diameter and a small diameter; a flow-through hole is arranged in the center of the valve core, a push rod groove is opened in the center of the large diameter end face, and a fourth sealing ring groove is arranged circumferentially on the small diameter; the small diameter is closely attached to the inner wall of the seventh cavity through a sealing ring to achieve sealing and positioning.

[0010] Preferably, the valve seat has a cylindrical shape. A first sealing ring groove, a second sealing ring groove, and a push rod guiding hole are opened on its top surface, and a cavity is arranged inside it. A plurality of first flow-through windows are evenly distributed along the circumference of the cavity; the valve seat is closely attached to the inner wall of the valve sleeve through a sealing ring circumferentially; one end of the valve seat is attached to the valve seat limiting groove, and the other end is attached to the guiding plug assembly.

[0011] Preferably, the push rod includes a thin rod and a thick rod, and a cross-shaped first flow-through hole is opened at the bottom of the thick rod; the thin rod is inserted into the push rod guiding hole of the valve seat.

[0012] Preferably, the guiding plug assembly includes a guiding plug and a guiding copper sleeve. The guiding plug includes a large circular boss and a small circular boss. A sealing ring groove is arranged circumferentially on the large circular boss for placing a sealing ring. A guiding copper sleeve groove is opened in the center of the large circular boss, and a push rod guiding hole is opened in the center of the small circular boss. The guiding copper sleeve is press-fitted into the guiding copper sleeve groove.

[0013] Preferably, the electromagnet connector includes a cylindrical boss, a central hole, and a hexagonal boss; a relief groove is arranged between the cylindrical boss and the hexagonal boss. The central hole is arranged at the center inside the electromagnet connector, and a central hole thread is machined on the surface of the central hole for connecting with the electromagnet; a first chamfer is arranged on the end face of the cylindrical boss.

[0014] Preferably, the lower pressing plate includes a large circular boss, a square boss, and a small circular boss arranged in sequence from top to bottom. Four screw holes are evenly opened circumferentially on the square boss, and a ninth cavity is opened in the center of the lower pressing plate, which is used to accommodate a spring.

[0015] Preferably, the ratio of the large diameter to the small diameter is set to 1.1, the valve seat material is set to a metal material, preferably stainless steel or titanium alloy, and the valve core material is preferably set to a special engineering plastic.

[0016] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, a pressure self-adaptive two-way sealing electromagnetic cut-off valve provided by the present invention mainly has the following beneficial effects:

[0017] 1. For the pressure self-adaptive two-way sealing electromagnetic cut-off valve of the present invention, the opening and closing of the cut-off valve are controlled by the energization or de-energization of the electromagnet. When the electromagnet is energized, a magnetic field force is generated to push the push rod downward or upward, and then the valve core is opened to achieve the function of fluid passage. When the electromagnet is de-energized, the magnetic field force disappears, and under the action of the spring force, the valve core is pushed to move in the reverse direction to achieve the function of flow interception. Since there is a fluid passage hole in the center of the valve core of this electromagnetic cut-off valve, the pressures at both ends are balanced, so that it has good sealing performance under different pressures and has a pressure self-adaptive adjustment function.

[0018] 2. The special design of the valve core structure enables it to have a two-way sealing effect, and it is not necessary to distinguish the high-pressure port and the low-pressure port of the cut-off valve during use. Moreover, the valve core and the valve seat adopt a soft-to-hard matching method, which can well compensate for the errors caused by processing, maintain the consistency of the product, and is very beneficial to improving the sealing performance.

[0019] 3. The internal structure of the electromagnetic cut-off valve of the present invention is relatively simple, easy to process, small in size, light in weight, easy to assemble, highly efficient in the actual production process, and flexible and convenient in the use process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the pressure self-adaptive two-way sealing electromagnetic cut-off valve of the present invention;

[0021] Figure 2 is a cross-sectional view of the pressure self-adaptive two-way sealing electromagnetic cut-off valve of the present invention;

[0022] Figure 3 is a schematic structural diagram of the electromagnet joint of the present invention;

[0023] Figure 4 is a schematic structural diagram of the valve body of the present invention;

[0024] Figure 5 is a schematic structural diagram of the guide plug of the present invention;

[0025] Figure 6 is a schematic structural diagram of the push rod of the present invention;

[0026] Figure 7 is a schematic structural diagram of the valve seat of the present invention;

[0027] Figure 8 is a schematic structural view of the valve core of the present invention;

[0028] Figure 9 is a schematic structural view of the valve sleeve of the present invention;

[0029] Figure 10 is a schematic structural view of the lower pressing plate of the present invention;

[0030] In all the drawings, the same reference numerals are used to denote the same elements or structures, where:

[0031] 1 - Electromagnet; 2 - Electromagnet joint; 3 - Check valve; 201 - Cylindrical boss; 202 - Central hole; 203 - Central hole thread; 204 - Hexagonal boss; 205 - Chamfer 1; 206 - Relief groove; 301 - Valve body, 30101 - Cavity 1; 30102 - Cavity 2; 30103 - Water inlet / outlet 1; 30104 - Water inlet / outlet 2; 30105 - Cavity 3; 30106 - Cavity 4; 30107 - Cavity 5; 30108 - Screw hole 1; 302 - Guide pressing plate; 303 - Guide plug, 30301 - Small circular boss 1; 30302 - Large circular boss 1; 30303 - Sealing ring groove; 30304 - Thumb rod guide hole; 30305 - Guide copper sleeve groove; 304 - Guide copper sleeve; 305 - Thumb rod, 30501 - Thin rod; 30502 - Thick rod; 30503 - Flow through hole 1; 306 - Valve seat, 30601 - Sealing ring groove 1; 30602 - Sealing ring groove 2; 30603 - Thumb rod guide hole; 30604 - Flow through window 1; 30605 - Cavity 6; 30606 - Sealing ring groove 3; 30607 - Chamfer 2; 307 - Valve core, 30701 - Thumb rod groove; 30702 - Chamfer 3; 30703 - Large diameter; 30704 - Small diameter; 30705 - Sealing ring groove 4; 30706 - Flow through hole; 30707 - Chamfer 4; 308 - Valve sleeve, 30801 - Sealing ring groove 5; 30802 - Cavity 7; 30803 - Sealing ring groove 6; 30804 - Flow through window 2; 30805 - Cavity 8; 30806 - Valve seat limit groove; 309 - Lower pressing plate, 30901 - Cavity 9; 30902 - Screw hole 2; 30903 - Large circular boss 2; 30904 - Square boss; 30905 - Small circular boss 2; 310 - Screw; 311 - Spring; 312 - Sealing ring. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. 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. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Please refer to Figure 1 and Figure 2 , a pressure-adaptive two-way sealed electromagnetic stop valve in this embodiment includes an electromagnet 1, an electromagnet connector 2, and a stop valve 3. The electromagnet 1 is connected to the stop valve 3 through the electromagnet connector 2; the stop valve 3 includes a valve body 301, a guiding pressing plate 302, a guiding plug assembly, a push rod 305, a valve seat 306, a valve core 307, a valve sleeve 308, and a lower pressing plate 309; the valve sleeve 308, the valve seat 306, the guiding plug assembly, and the guiding pressing plate 302 are in close contact in sequence and are arranged in the cavity of the valve body 301; one end of the valve sleeve 308 is in contact with the lower pressing plate 309, and the other end is in contact with the valve seat 306; the lower pressing plate 309 and the valve body 301 are fixedly connected by screws 310; one end of the push rod 305 is in contact with the push rod groove 30701 of the valve core 307, and the other end passes through the valve seat 306, the guiding bolt assembly, and the guiding pressing plate 302 in sequence; the valve core 307 is arranged in the valve sleeve 308 and is in close contact with the inner wall of the cavity of the valve sleeve 308 through a sealing ring; a flow-through hole 30706 is arranged in the valve core 307, and under the action of a spring 311 at its bottom, it is in close contact with the valve seat 306. The pressure-adaptive two-way sealed electromagnetic stop valve in this example further includes a plurality of sealing rings 312 for ensuring the sealing performance of the whole structure.

[0034] Please refer to Figure 3 , the electromagnet connector 2 includes a cylindrical boss 201, a central hole 202, and a hexagonal boss 204; a relief groove 206 is arranged between the cylindrical boss 201 and the hexagonal boss 204, the central hole 202 is arranged at the center inside the electromagnet connector 2, and a central hole thread 203 is machined on the surface of the central hole 202 for connecting the electromagnet 1; a chamfer 205 is arranged on the end face of the cylindrical boss 201.

[0035] Please refer to Figure 4, the valve body 301 includes a first water inlet / outlet 30103, a second water inlet / outlet 30104, and a first cavity 30101, a second cavity 30102, a third cavity 30105, a fourth cavity 30106, and a fifth cavity 30107 arranged in sequence. The valve sleeve 308 is arranged in the first cavity 30101, the second cavity 30102, and the third cavity 30105. The valve seat 306 is arranged in the third cavity 30105. The guiding pressing plate 302 and the guiding bolt assembly are arranged in the fourth cavity 30106 in sequence; the inner wall of the fifth cavity 30107 is provided with threads for connecting with the electromagnet joint 2 to achieve axial pressing; the first water inlet / outlet 30103 is opened on the periphery of the second cavity 30102, and the second water inlet / outlet 30104 is opened on the periphery of the third cavity 30105.

[0036] Please refer to Figure 5 , the guiding plug assembly includes a guiding plug 303 and a guiding copper sleeve 304. The guiding plug 303 includes a large circular boss 30302 and a small circular boss 30301. The large circular boss 30302 is circumferentially provided with a sealing ring groove 30303 for placing a sealing ring. A guiding copper sleeve groove 30305 is opened at the center of the large circular boss 30302, and a push rod guiding hole 30304 is opened at the center of the small circular boss 30301. The guiding copper sleeve 304 is press-fitted in the guiding copper sleeve groove 30305.

[0037] Please refer to Figure 6 , the push rod 305 includes a thin rod 30501 and a thick rod 30502. A cross-shaped first through-flow hole 30503 is opened at the bottom of the thick rod 30502; the thin rod 30501 is inserted into the push rod guiding hole 30603 of the valve seat 306.

[0038] Please refer to Figure 7 , the valve seat 306 has a cylindrical shape. A first sealing ring groove 30601, a second sealing ring groove 30602, and a push rod guiding hole 30603 are opened on its top surface. A cavity 30605 is arranged inside it. A plurality of first through-flow windows 30604 are evenly distributed along the circumference of the cavity 30605; the valve seat 306 is in close fit with the inner wall of the valve sleeve 308 through a sealing ring circumferentially; one end of the valve seat 306 is in fit with the valve seat limiting groove 30806, and the other end is in fit with the guiding plug assembly. The valve seat 306 is machined with a second chamfer 30607 at the end face close to the cavity 30605.

[0039] Please refer to Figure 8, the valve core 307 has a cylindrical shape and includes a large diameter 30703 and a small diameter 30704; a flow-through hole 30706 is provided at the center of the valve core 307, a push rod groove 30701 is opened at the center of the end face of the large diameter 30703, and a sealing ring groove four 30705 is circumferentially provided on the small diameter 30704; the small diameter 30704 is in close fit with the inner wall of the cavity seven 30802 through a sealing ring to achieve sealing and positioning. The diameter ratio of the large diameter 30703 to the small diameter 30704 is set to 1.1. Chamfers three 30702 and chamfers four 30707 are respectively machined at both ends of the valve core 307.

[0040] Please refer to Figure 9 , the valve sleeve 308 has a cylindrical shape, a sealing ring groove five 30801 is opened on its top surface, and a cavity seven 30802, a cavity eight 30805, and a valve seat limiting groove 30806 are sequentially arranged inside from top to bottom; a plurality of flow-through windows two 30804 are evenly distributed along the circumference of the cavity eight 30805, the cavity eight 30805 is used to accommodate the valve seat 306 and the valve core 307, and the cavity seven 30802 is used to accommodate the valve core 307.

[0041] Please refer to Figure 10 , the lower pressure plate 309 includes a large circular boss 30903, a square boss 30904, and a small circular boss 30905 arranged in sequence from top to bottom. Four screw holes 30902 are equidistantly opened in the circumferential direction of the square boss 30904, and a cavity nine 30901 is opened at the center of the lower pressure plate 309, which is used to accommodate the spring 311.

[0042] The working process of this embodiment is as follows: First, place the valve sleeve 308 with the sealing ring 312 installed in the first cavity 30101, the second cavity 30102, and the third cavity 30105 in the valve body 301. One end of the valve sleeve 308 is in close contact with the inner wall of the first cavity 30101 through the sealing ring 312 to achieve sealing and positioning. The other end of the valve sleeve 308 is in close contact with the inner wall of the third cavity 30105 through the sealing ring 312 to achieve sealing and positioning. At this time, the flow-through window 30804 of the valve sleeve 308 is exactly in the second cavity 30102. Then, place the valve core 307 with the sealing ring 312 installed in the valve sleeve. The small-diameter end 30704 of the valve core 307 is in close fit with the inner wall of the seventh cavity 30802 of the valve sleeve 308 through the sealing ring 312 to achieve sealing and positioning. Insert the thin rod 30501 of the ejector rod 305 into the ejector rod guiding hole 30603 of the valve seat 306, and then place the whole in the third cavity 30105 of the valve body 301. One end of the valve seat 306 is in close fit with the inner wall of the eighth cavity 30805 of the valve sleeve 308 through the sealing ring 312 to achieve sealing and positioning. Then, place the guide plug 303, the guide copper sleeve 304, and the guide pressing plate 302 in the guide plug assembly in the fourth cavity 30106 of the valve body 301 in sequence. Place the spring 311 in the ninth cavity 30901 of the lower pressing plate 309, and then fixedly connect the lower pressing plate 309 to the valve body 301 through the screw 310. Finally, screw the electromagnet connector 2 into the fifth cavity 30107 of the valve body 301 to achieve axial compression.

[0043] As Figure 2 , 4 shown, assume that the first water inlet / outlet 30103 in the valve body 301 is the water inlet, and the second water inlet / outlet 30104 is the water outlet. The working medium enters the pressure self-adaptive regulating two-way sealing electromagnetic stop valve through the first water inlet / outlet 30103, then enters the sixth cavity 30605 through the first flow-through window 30604 of the valve seat 306, then passes through the cross-shaped first flow-through hole 30503, and finally reaches the cavity 30901 through the flow-through hole 30706 of the valve core 307, so as to achieve pressure balance at both ends of the valve core. At this time, the valve core 307 is in close fit with the valve seat 306 under the action of the spring force of the bottom spring 311, achieving sealing, and the working medium in the first water inlet / outlet 30103 cannot flow into the second water inlet / outlet 30104. If it is necessary to make the working medium in the first water inlet / outlet 30103 flow into the second water inlet / outlet 30104, just energize the electromagnet 1. After the electromagnet 1 is energized, it pushes the ejector rod 305 to the right, so that the valve core 307 moves to the right against the spring force, and the valve opens. It can be seen that the pressure of the first water inlet / outlet 30103 can be balanced through the flow-through hole 30706, and the pressure of the second water inlet / outlet 30104 can be balanced through the structure of the valve core 307 itself, so that the pressure difference on both sides of the sealing part of the valve orifice of the pressure self-adaptive regulating two-way sealing electromagnetic stop valve is 0.

[0044] In summary, the pressure self-adaptive regulation two-way seal electromagnetic cut-off valve in this embodiment has the function of self-adaptive pressure regulation under different sea depth pressures, can be unaffected by the sea depth pressure, and always maintains good sealing performance. In addition, it also has a good two-way sealing effect, is convenient and flexible to use, and there is no need to distinguish between the high-pressure port and the low-pressure port of the electromagnetic cut-off valve. This valve has been applied to actual projects and has good application value and prospects.

[0045] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-adaptive bidirectional sealing electromagnetic stop valve, characterized in that: The invention comprises an electromagnet (1), an electromagnet connector (2) and a stop valve (3), wherein the electromagnet (1) is connected to the stop valve (3) via the electromagnet connector (2); the stop valve (3) comprises a valve body (301), a guide pressure plate (302), a guide screw plug assembly, a push rod (305), a valve seat (306), a valve core (307), a valve sleeve (308) and a lower pressure plate (309); the valve sleeve (308), the valve seat (306), the guide screw plug assembly and the guide pressure plate (302) are in close contact with each other in sequence and are arranged in a cavity of the valve body (301); one end of the valve sleeve (308) is in contact with the lower pressure plate (309), and the other end is in contact with the lower pressure plate (309). One end is in contact with the valve seat (306); the lower pressure plate (309) is fixedly connected to the valve body (301) by means of screws (310); one end of the push rod (305) is in contact with the push rod groove (30701) of the valve core (307), and the other end is sequentially inserted through the valve seat (306), the guide bolt assembly, and the guide pressure plate (302); the valve core (307) is arranged in the valve sleeve (308), and is in close contact with the inner wall of the cavity of the valve sleeve (308) through a sealing ring; a flow hole (30706) is arranged in the valve core (307), and is in close contact with the valve seat (306) under the action of a spring (311) located at the bottom thereof.

2. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 1, characterized in that: The valve body (301) comprises a water inlet and outlet 1 (30103), a water inlet and outlet 2 (30104), and a cavity 1 (30101), a cavity 2 (30102), a cavity 3 (30105), a cavity 4 (30106), and a cavity 5 (30107) which are arranged in sequence. The valve sleeve (308) is arranged in the cavity 1 (30101), the cavity 2 (30102), and the cavity 3 (30105). The valve seat (306 ) is arranged in cavity three (30105), and the guide pressure plate (302) and the guide bolt assembly are arranged in cavity four (30106) in sequence; the inner wall of cavity five (30107) is provided with a thread for connecting with the electromagnet connector (2) to achieve axial compression; the water inlet and outlet one (30103) is opened on the periphery of cavity two (30102), and the water inlet and outlet two (30104) is opened on the periphery of cavity three (30105).

3. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 1, characterized in that: The valve sleeve (308) is cylindrical in shape, with a sealing ring groove five (30801) on its top surface, and a cavity seven (30802), a cavity eight (30805), and a valve seat limiting groove (30806) are arranged in sequence from top to bottom inside; a plurality of flow windows two (30804) are evenly distributed along the circumference of the cavity eight (30805), the cavity eight (30805) is used to accommodate the valve seat (306) and the valve core (307), and the cavity seven (30802) is used to accommodate the valve core (307).

4. A pressure-adaptive bidirectional sealing electromagnetic stop valve as claimed in claim 3, characterized in that: The valve core (307) is cylindrical in shape, including a major diameter (30703) and a minor diameter (30704); a flow hole (30706) is arranged at the center of the valve core (307), a push rod groove (30701) is opened at the center of the end face of the major diameter (30703), and a sealing ring groove four (30705) is arranged circumferentially on the minor diameter (30704); the minor diameter (30704) is tightly fitted with the inner wall of the cavity seven (30802) through the sealing ring to achieve sealing and positioning.

5. A pressure-adaptive bidirectional sealing electromagnetic stop valve as claimed in claim 4, characterized in that: The valve seat (306) is cylindrical in shape, and its top surface is provided with a sealing ring groove 1 (30601), a sealing ring groove 2 (30602), and a push rod guide hole (30603), and a cavity (30605) is arranged inside, and a plurality of flow windows 1 (30604) are evenly distributed along the circumference of the cavity (30605); the valve seat (306) is tightly fitted to the inner wall of the valve sleeve (308) through the sealing ring; one end of the valve seat (306) is fitted to the valve seat limit groove (30806), and the other end is fitted to the guide screw plug assembly.

6. A pressure-adaptive bidirectional sealing electromagnetic stop valve as claimed in claim 5, characterized in that: The push rod (305) comprises a thin rod (30501) and a thick rod (30502); a cross-shaped flow hole (30503) is provided at the bottom of the thick rod (30502); the thin rod (30501) is inserted into the push rod guide hole (30603) of the valve seat (306).

7. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 1, characterized in that: The guide screw plug assembly comprises a guide plug (303) and a guide copper sleeve (304). The guide plug (303) comprises a large circular boss (30302) and a small circular boss (30301). The large circular boss (30302) is circumferentially provided with a sealing ring groove (30303) for placing a sealing ring. The large circular boss (30302) is provided with a guide copper sleeve groove (30305) at the center. The small circular boss (30301) is provided with a push rod guide hole (30304) at the center. The guide copper sleeve (304) is interference fitted in the guide copper sleeve groove (30305).

8. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 1, characterized in that: The electromagnet connector (2) comprises a cylindrical boss (201), a center hole (202), and a hexagonal boss (204); a tool-retracting groove (206) is provided between the cylindrical boss (201) and the hexagonal boss (204); the center hole (202) is provided at the center of the electromagnet connector (2); a center hole thread (203) is processed on the surface of the center hole (202) for connecting the electromagnet (1); and a chamfer (205) is provided on the end face of the cylindrical boss (201).

9. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 1, characterized in that: The lower pressure plate (309) includes a large circular boss (30903), a square boss (30904) and a small circular boss (30905) arranged in sequence from top to bottom, and the square boss (30904) is provided with four screw holes (30902) equidistantly arranged in the circumferential direction, and a cavity nine (30901) is provided in the center of the lower pressure plate (309) for accommodating a spring (311).

10. A pressure-adaptive bidirectional sealing electromagnetic stop valve according to claim 4, characterized in that: The ratio of the diameters of the major diameter (30703) and the minor diameter (30704) is set to 1.1.

Images