Split type pilot electromagnetic valve for roller precise subsection cooling injection beam

Abstract

The utility model discloses a split type pilot electromagnetic valve for a roller precise segmented cooling spray beam, which comprises an electromagnet assembly arranged in a rear cavity on the rear side of the spray beam, connected with an inner through hole on the spray beam, and arranged at an interval with a cooling liquid cavity on the spray beam; the valve assembly is arranged in the inner through hole and the cooling liquid cavity, one end of the valve assembly is connected with the electromagnet assembly, and the valve assembly makes contact with cooling liquid in the cooling liquid cavity; one end of the guide pipe is connected with the other end of the valve assembly and extends towards the front side of the spraying beam along the cooling liquid cavity, and the other end of the guide pipe is connected with a first stepped through hole in the front side of the spraying beam; the first sealing piece is connected to the guide pipe, and sealing is formed at the first stepped through hole; the pressing plate is connected to the front panel on the spraying beam; the nozzle penetrates through the pressing plate and is pressed between the guide pipe and the pressing plate; the technical problems that mounting and dismounting operation is inconvenient, wires on the electromagnetic valve make contact with cooling liquid, the electromagnetic valve is corroded, and potential safety hazards exist are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a split-type pilot electromagnetic valve used for a precise segmented cooling spray beam of a rolling mill. Background Art

[0002] At present, in the cold rolling mills of copper and aluminum strips, whether it is a multi-stand continuous rolling mill or a single-stand or double-stand reversible strip production line, the roller cooling and lubrication device is indispensable;

[0003] The cooling and lubrication device is composed of multiple spray beams. The lubricating coolant is sprayed onto the roller surface through the solenoid valves on the spray beams. Through heat exchange, the desired cooling effect is achieved. Therefore, controlling the spray effect of each solenoid valve and the layout of the solenoid valve are necessary conditions to ensure the normal operation of the roller.

[0004] Among them, in order to meet the production quality requirements of battery foil and other products in the new energy industry, in the existing technology, the lateral spacing of the solenoid valves is set very small. Sometimes, a spray beam will be installed with more than 150 solenoid valves. The layout of the solenoid valves is compact, and the wiring space required for so many solenoid valves is relatively large. Moreover, the solenoid valve is an integrated structure. During installation, the solenoid valves are installed from the front panel of the spray beam and connected from the rear cavity of the spray beam. It is easy for the wiring to be entangled or torn. During maintenance, the solenoid valve needs to be taken out as a whole, which is inconvenient to operate. The wiring on the solenoid valve may come into contact with the coolant (the coolant is kerosene-based oil), and the solenoid valve may be corroded, which affects the service life of the solenoid valve. In severe cases, safety hazards such as fire may occur. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the related art, the purpose is to provide a split pilot solenoid valve for the precision segmented cooling spray beam of the rolling mill, so as to solve the technical problems in the related art such as the inconvenient installation and disassembly operations, the wiring on the solenoid valve coming into contact with the coolant, the solenoid valve being corroded, and the existence of safety hazards.

[0006] The technical solution to achieve the purpose is: a split-type pilot solenoid valve for a precision segmented cooling spray beam of a rolling mill, comprising:

[0007] The electromagnet assembly is arranged in the rear cavity on the rear side of the spray beam, connected to the inner through hole on the spray beam, and spaced apart from the cooling liquid cavity on the spray beam;

[0008] a valve assembly, disposed in the inner through hole and the cooling liquid cavity, one end of the valve assembly being connected to the electromagnet assembly, the valve assembly being in contact with the cooling liquid in the cooling liquid cavity;

[0009] a conduit, one end of which is connected to the other end of the valve assembly, extending along the cooling liquid cavity toward the front side of the spray beam, and the other end of which is connected to the first stepped through hole on the front side of the spray beam;

[0010] a first sealing member connected to the conduit to form a seal at the first stepped through hole;

[0011] a pressure plate connected to the front plate on the spray beam;

[0012] and a nozzle passing through the pressing plate and compressed between the conduit and the pressing plate;

[0013] During cooling spraying, the electromagnet assembly is energized, and a part of the valve assembly is linked by the pressure of the electromagnet assembly and the coolant, moving toward the electromagnet assembly, and the part between the valve assembly and the conduit is opened, and the coolant is sprayed out along the conduit and the nozzle.

[0014] Further: the electromagnet assembly includes: an outer shell, one end of which is connected to the inner through hole; a second sealing member connected to the outer shell to form a seal with the inner through hole; a coil, arranged in the outer shell, and the terminal on the coil passes through the outer shell; an inner sleeve, arranged in the outer shell; a first spring, arranged in the inner sleeve; a yoke, arranged in the inner sleeve, one end of which contacts the first spring; an armature, arranged in the inner sleeve, spaced apart from the yoke; and a second spring, arranged in the armature, contacting the other end of the yoke.

[0015] Furthermore: a first inner space is provided on the armature; a filling seal is provided in the first inner space.

[0016] Further: the valve assembly includes: a valve body, one end of which is connected to the outer shell and the inner sleeve, and the valve body has a second inner space; a valve core, which is arranged in the second inner space, divides the second inner space into a first space and a second space, and one end of the valve core contacts and abuts against the filling seal; a third spring, which is sleeved on the valve core, arranged between the valve body and the valve core, and arranged in the first space; a screw plug, which is connected to the threaded through hole on the side wall of the valve body, and the threaded through hole is connected to the first space; a third sealing member, which is connected to the valve core, and forms a seal between the valve core and the valve body; and a fourth sealing member, which is connected to the valve core, and forms a seal between the valve core and the conduit.

[0017] Furthermore: a second stepped through hole is provided in the middle of the valve core.

[0018] Furthermore: a third stepped through hole is provided in the middle of the conduit, and the third stepped through hole is communicated with the second stepped through hole.

[0019] Furthermore, the conduit includes: a joint section connected to the valve body, sleeved on the valve body, with the middle position in contact with the fourth sealing member, the joint section having a plurality of through-holes, the through-holes communicating with the second space and the coolant chamber; a tapered pipe section, one end of which is connected to the joint section; and a plug-in section, connected to the other end of the tapered pipe section, plugged into the first stepped through hole, and having the first sealing member;

[0020] The middle position of the joint section, the tapered pipe section and the plug-in section is provided with the third stepped through hole.

[0021] Furthermore: the first sealing member is an O-ring.

[0022] The above technical solution has the following beneficial effects: a split pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill is provided with an electromagnet assembly, a valve assembly, a conduit, a first seal, a pressure plate and a nozzle compared with the related art; the electromagnet assembly, the valve assembly, the conduit, the first seal, the pressure plate and the nozzle are separately provided, and when installing / disassembling, they can be installed / disassembled one by one, and the installation and disassembly operations are relatively convenient, and the electromagnet assembly is provided in the rear cavity on the rear side of the spray beam, connected to the inner through hole on the spray beam, and spaced apart from the cooling liquid cavity on the spray beam, so that it will not come into contact with the cooling liquid and will not be corroded The invention can realize the situation of relatively safe and smooth spraying of coolant. When the coolant is sprayed, the electromagnet assembly is energized, and the part of the valve assembly is linked to the pressure of the electromagnet assembly and the coolant to move toward the electromagnet assembly. The part of the valve assembly and the conduit are opened, and the coolant is sprayed along the conduit and the nozzle, which is smoother to use. The inconvenience of installation and disassembly, the technical problems of the wiring on the solenoid valve contacting the coolant and the corrosion of the solenoid valve, and the potential safety hazards are overcome. The installation and disassembly operations are relatively convenient, the wiring on the solenoid valve will not contact the coolant, and the technical effect of relative safety is achieved, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the assembly structure;

[0024] In the figure: 10. Electromagnet assembly, 11. Outer shell, 12. Second seal, 13. Coil, 13-1. Terminal block, 14. Inner sleeve, 15. First spring, 16. Yoke, 17. Armature, 18. Second spring, 19. Filling seal, 20. Valve assembly, 21. Valve body, 21-1. First space, 21-2. Second space, 21-3. Threaded through hole, 22. Valve core, 22-1. Second stepped through hole, 23. Third spring, 24. Plug, 25. Third seal, 26. Fourth seal, 30. Conduit, 30-1. Third stepped through hole, 31. Connector section, 31-1. Through-hole, 32. Conical pipe section, 33. Connecting section, 40. First seal, 50. Pressure plate, 60. Nozzle, 100. Spray beam, 101. Rear cavity, 102. Inner through hole, 103. Cooling liquid cavity, 104. First stepped through hole, 105. Front panel. DETAILED DESCRIPTION

[0025] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0026] A split-type pilot solenoid valve for precision segmented cooling of rollers solves the technical problems of inconvenient installation and disassembly in related technologies, such as the wiring on the solenoid valve coming into contact with the coolant, the solenoid valve being corroded, and potential safety hazards. The invention can be manufactured and used, achieving the positive effects of relatively convenient installation and disassembly, preventing the wiring on the solenoid valve from coming into contact with the coolant, and being relatively safe. The overall concept is as follows:

[0027] One implementation method:

[0028] like Figure 1 As shown; a split pilot solenoid valve for a precision segmented cooling spray beam of a rolling mill, comprising:

[0029] The electromagnet assembly 10 is disposed in a rear cavity 101 on the rear side of the spray beam 100, connected to the inner through hole 102 on the spray beam 100, and spaced apart from the cooling liquid cavity 103 on the spray beam 100;

[0030] The valve assembly 20 is disposed in the inner through hole 102 and the cooling liquid cavity 103 , one end of which is connected to the electromagnet assembly 10 , and the valve assembly 20 contacts the cooling liquid in the cooling liquid cavity 103 ;

[0031] A conduit 30 , one end of which is connected to the other end of the valve assembly 20 , extends along the cooling liquid chamber 103 toward the front side of the spray beam 100 , and the other end of which is connected to the first stepped through hole 104 on the front side of the spray beam 100 ;

[0032] a first sealing member 40 connected to the conduit 30 to form a seal at the first stepped through hole 104;

[0033] A pressure plate 50 connected to the front panel 105 on the spray beam 100;

[0034] and a nozzle 60 passing through the pressing plate 50 and being compressed between the conduit 30 and the pressing plate 50;

[0035] During cooling spraying, the electromagnet assembly 10 is energized, and the part of the valve assembly 20 is linked to the electromagnet assembly 10 and the pressure of the coolant, and moves toward the electromagnet assembly 10. The gap between the part of the valve assembly 20 and the conduit 30 is opened, and the coolant is sprayed along the conduit 30 and the nozzle 60.

[0036] Specifically, during implementation, an electromagnet assembly 10, a valve assembly 20, a conduit 30, a first sealing member 40, a pressure plate 50 and a nozzle 60 are provided; the electromagnet assembly 10, the valve assembly 20, the conduit 30, the first sealing member 40, the pressure plate 50 and the nozzle 60 are separately provided, and during installation / disassembly, they can be installed / disassembled one by one, and the installation and disassembly operations are relatively convenient. Moreover, the electromagnet assembly 10 is provided in a rear cavity 101 on the rear side of the spray beam 100, connected to the inner through hole 102 on the spray beam 100, and spaced apart from the coolant cavity 103 on the spray beam 100, so as not to come into contact with the coolant and not to be corroded, which is relatively safe. At the same time, smooth spraying of the coolant is achieved. During cooling spraying, the electromagnet assembly 10 is energized, and a part of the valve assembly 20 is linked by the pressure of the electromagnet assembly 10 and the coolant to move toward the electromagnet assembly 10, and the space between the part of the valve assembly 20 and the conduit 30 is opened, and the coolant is sprayed along the conduit 30 and the nozzle 60, which is smoother to use.

[0037] Another embodiment:

[0038] like Figure 1 As shown; when implemented, the electromagnet assembly 10 includes: an outer shell 11, one end of which is connected to the inner through hole 102; a second sealing member 12, connected to the outer shell 11, and forming a seal with the inner through hole 102; a coil 13, disposed in the outer shell 11, and a terminal 13-1 on the coil 13 passes through the outer shell 11; an inner sleeve 14, disposed in the outer shell 11; a first spring 15, disposed in the inner sleeve 14; a yoke 16, disposed in the inner sleeve 14, one end of which contacts the first spring 15; an armature 17, disposed in the inner sleeve 14, spaced apart from the yoke 16; and a second spring 18, disposed in the armature 17, and contacting the other end of the yoke 16;

[0039] An outer shell 11 is provided to enclose the coil 13 inside, thereby protecting the coil 13 and reducing the probability of the coil 13 contacting the coolant;

[0040] The second sealing member 12 is an O-ring, which is disposed in a groove on the outer shell 11 to form a seal to prevent the coolant from entering the rear cavity 101;

[0041] The coil 13 and the terminal 13 - 1 are common structures in the prior art. After reading the disclosed content, a person skilled in the art can directly and unambiguously know how to configure them without any creative effort or excessive experimentation.

[0042] The inner sleeve 14 is generally cylindrical in shape and is inserted into the outer shell 11. It has a cylindrical inner space. The cylindrical inner space accommodates the first spring 15, the yoke 16, the armature 17, the second spring 18 and the filling seal 19. One end of the valve core 22 can slide along the cylindrical inner space.

[0043] The first spring 15 is a common structure in the prior art, such as a cylindrical spring;

[0044] The yoke 16 and armature 17 are commonly used structures in the prior art and are used to enhance the magnetic attraction of the coil 13 and improve the efficiency of the electromagnet. This is common knowledge and a person skilled in the art can directly and unambiguously know how to configure them after reading the disclosed content without any creative effort or excessive experimentation.

[0045] The second spring 18 is a common structure in the prior art, such as a cylindrical spring, which is used to push the armature 17 back to its original position after the coil 13 is powered off;

[0046] The armature 17 is provided with a first inner space; a filling seal 19 is provided in the first inner space; the filling seal 19 is a rubber lining, which is filled in the first inner space and contacts and abuts against the valve core 22 to form a seal to prevent the coolant from entering the inner sleeve 14;

[0047] An electromagnet assembly 10 is provided, and a DC24 safety power supply is used. By adjusting the pulse width of the electrical signal, the opening or closing of the electromagnet assembly 10 is precisely adjusted, thereby precisely adjusting the amount of coolant sprayed per unit time, thereby ensuring the cooling effect of the precision segmented strip of the roller;

[0048] Another embodiment:

[0049] like Figure 1As shown; during implementation, the valve assembly 20 includes: a valve body 21, one end of which is connected to the outer shell 11 and the inner sleeve 14, and the valve body 21 has a second inner space; a valve core 22, which is arranged in the second inner space, and divides the second inner space into a first space 21-1 and a second space 21-2, and one end of the valve core 22 is in contact with and abuts against the filling seal 19; a third spring 23, which is sleeved on the valve core 22, arranged between the valve body 21 and the valve core 22, and arranged in the first space 21-1; a screw plug 24, which is connected to the threaded through hole 21-3 on the side wall of the valve body 21, and the threaded through hole 21-3 is connected to the first space 21-1; a third sealing member 25, which is connected to the valve core 22, and forms a seal between the valve core 22 and the valve body 21; and a fourth sealing member 26, which is connected to the valve core 22, and forms a seal between the valve core 22 and the conduit 30;

[0050] One end of the valve body 21 is threadedly connected to the inner sleeve 14 and abuts against the outer shell 11, which provides good connection reliability and is relatively easy to install and remove.

[0051] The valve core 22 is made of 022Cr17Ni12Mo2 stainless steel, has a roughly T-shaped structure, and is slidably connected in the second inner space;

[0052] The middle position of the valve core 22 has a second stepped through hole 22-1, which is conducive to the circulation of the coolant;

[0053] The third spring 23 is a common structure in the prior art, such as a cylindrical spring, which is used to push the valve core 22 back to its original position after the electromagnet assembly 10 is powered off;

[0054] The screw plug 24 is threadedly connected to the threaded through hole 21-3. By changing the depth of the screw plug 24 screwed into the threaded through hole 21-3, or changing the volume of the screw plug 24 and the threaded through hole 21-3, the volume of the first space 21-1 is adjusted, thereby adjusting the pressure difference. This is beneficial for better stability when the valve core 22 slides along the second inner space.

[0055] The third sealing member 25 is an O-ring, which forms a seal and separates the first space 21-1 and the second space 21-2 into two disconnected spaces;

[0056] The fourth sealing member 26 is an O-ring that forms a seal. When the electromagnet assembly 10 is powered off, the coolant will not enter the valve core 22 and the conduit 30. The nozzle 60 is in a closed state, which is relatively safe.

[0057] During cooling spraying, the electromagnet assembly 10 is energized, the armature 17 compresses the second spring 18, and moves toward the yoke 16. A closed magnetic circuit is formed between the yoke 16 and the armature 17. At this time, the coolant ( Figure 1 The valve core 22 is pushed in the second space 21-2, the third spring 23 is compressed, the second space 21-2 gradually becomes larger, the first space 21-1 gradually becomes smaller, the fourth sealing member 26 on the valve core 22 and the conduit 30 are opened, and the coolant is ejected along the conduit 30 and the nozzle 60;

[0058] When the cooling spray is stopped, the electromagnet assembly 10 is de-energized, the second spring 18 rebounds, causing the armature 17 to return to its original position, and the third spring 23 to rebound. Under the action of the armature 17 and the third spring 23, the valve core 22 returns to its original position, forming a seal between the fourth sealing member 26 and the guide tube 30, and the nozzle 60 is in a closed state;

[0059] Another embodiment:

[0060] like Figure 1 As shown; in implementation, the middle position of the conduit 30 has a third stepped through hole 30-1, and the third stepped through hole 30-1 is connected to the second stepped through hole 22-1;

[0061] The conduit 30 includes: a joint section 31 connected to the valve body 21, sleeved on the valve body 21, and in contact with the fourth sealing member 26 at its middle position; the joint section 31 has a plurality of through-holes 31-1, and the through-holes 31-1 communicate with the second space 21-2 and the cooling liquid chamber 103; a tapered tube section 32, one end of which is connected to the joint section 31; and a plug section 33 connected to the other end of the tapered tube section 32, plugged into the first stepped through hole 104, and having the first sealing member 40;

[0062] The joint section 31, the tapered pipe section 32 and the plug section 33 are integrally formed; the plug section 33 is plugged into the first stepped through hole 104, and the joint section 31 is threadedly connected to the valve body 21, making installation and disassembly more convenient;

[0063] The third stepped through hole 30-1 is provided in the middle of the joint section 31, the tapered tube section 32 and the plug section 33. The third stepped through hole 30-1 is provided to facilitate the circulation of the coolant.

[0064] A through hole 31-1 is provided to facilitate the circulation of the cooling liquid;

[0065] Another embodiment:

[0066] like Figure 1As shown; when implemented, the first sealing member 40 is an O-ring, which is connected to the groove on the conduit 30 to form a seal to prevent coolant leakage and provide better safety;

[0067] Another embodiment:

[0068] like Figure 1 As shown; when implemented, the pressure plate 50 is a square block structure, connected to the front panel 105 by bolts, which is convenient for installation and disassembly, and is conducive to pressing and limiting the nozzle 60, and has good structural reliability;

[0069] Another embodiment:

[0070] like Figure 1 As shown; when implemented, the shape of the nozzle 60 is roughly a "T"-shaped structure, with a stepped inner through hole in the middle portion, which is beneficial for being limited by the pressing plate 50 and is beneficial for the coolant to be ejected from the stepped inner through hole;

[0071] By changing the specifications of the stepped inner through hole, the amount of coolant sprayed can be adjusted, which provides greater flexibility. After reading the disclosed content, a person skilled in the art can directly and unambiguously know how to change the specifications of the stepped inner through hole without having to make any creative effort or conduct excessive experiments.

[0072] About the Jet Beam 100 structure:

[0073] See Figure 1 The spray beam 100 has a rear cavity 101, an inner through hole 102, a cooling liquid cavity 103, a first stepped through hole 104 and a front panel 105;

[0074] The electromagnet assembly 10 is disposed in a rear cavity 101 on the rear side of the spray beam 100 and is connected to an inner through hole 102 on the spray beam 100. It is spaced apart from the coolant cavity 103 on the spray beam 100 and does not come into contact with the coolant, is not corroded, and is relatively safe.

[0075] A first stepped through hole 104 is provided to facilitate installation of the positioning conduit 30;

[0076] A front panel 105 is provided to facilitate connection of the pressure plate 50;

[0077] After reading the disclosed content, a person skilled in the art can directly and undoubtedly know how to arrange the rear cavity 101, the inner through hole 102, the cooling liquid cavity 103, the first stepped through hole 104 and the front panel 105 without having to make any creative effort or conduct excessive experiments.

[0078] The working principle is as follows: the electromagnet assembly 10, valve assembly 20, conduit 30, first seal 40, pressure plate 50 and nozzle 60 are separately arranged. When installing / disassembling, they can be installed / disassembled one by one, which is relatively convenient. In addition, the electromagnet assembly 10 is arranged in the rear cavity 101 on the rear side of the spray beam 100, connected to the inner through hole 102 on the spray beam 100, and separated from the coolant cavity 103 on the spray beam 100. It will not come into contact with the coolant and will not be corroded, which is relatively safe.

[0079] During cooling spraying, the electromagnet assembly 10 is energized, the armature 17 compresses the second spring 18, and moves toward the yoke 16. A closed magnetic circuit is formed between the yoke 16 and the armature 17. At this time, the coolant ( Figure 1 The valve core 22 is also pushed in the second space 21-2, the third spring 23 is compressed, the second space 21-2 gradually becomes larger, the first space 21-1 gradually becomes smaller, the fourth sealing member 26 on the valve core 22 and the conduit 30 are opened, and the coolant is ejected along the conduit 30 and the nozzle 60;

[0080] When the cooling spray is stopped, the electromagnet assembly 10 is de-energized, the second spring 18 rebounds, causing the armature 17 to return to its original position, and the third spring 23 to rebound. Under the action of the armature 17 and the third spring 23, the valve core 22 returns to its original position, forming a seal between the fourth sealing member 26 and the guide tube 30, and the nozzle 60 is in a closed state;

[0081] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the positional relationships shown in the drawings and are only used to facilitate or simplify the description, and do not necessarily indicate specific directions. The operating procedures described in the embodiments are not absolute steps for use and may be adjusted accordingly in actual use.

[0082] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the relevant art. The terms "first," "second," and similar words used in the specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not necessarily indicate a limit on quantity, but rather indicate the presence of at least one, which shall be determined based on the content of the embodiments.

[0083] The above is only a preferred specific implementation method, but the scope of protection is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the scope of protection.

Claims

1. A split type pilot solenoid valve for precision segmented cooling spray beam of roller, characterized in that: include: An electromagnet assembly (10) is disposed in a rear cavity (101) on the rear side of the spray beam (100), connected to an inner through hole (102) on the spray beam (100), and spaced apart from a cooling liquid cavity (103) on the spray beam (100); a valve assembly (20) disposed in the inner through hole (102) and the cooling liquid cavity (103), one end of which is connected to the electromagnet assembly (10), and the valve assembly (20) contacts the cooling liquid in the cooling liquid cavity (103); A conduit (30), one end of which is connected to the other end of the valve assembly (20), extends along the cooling liquid cavity (103) toward the front side of the spray beam (100), and the other end of which is connected to the first stepped through hole (104) on the front side of the spray beam (100); a first sealing member (40) connected to the conduit (30) and forming a seal at the first stepped through hole (104); A pressure plate (50) connected to a front panel (105) on the spray beam (100); and a nozzle (60) passing through the pressing plate (50) and being compressed between the conduit (30) and the pressing plate (50); During cooling spraying, the electromagnet assembly (10) is energized, and a portion of the valve assembly (20) is linked by the electromagnet assembly (10) and the pressure of the coolant to move toward the electromagnet assembly (10), and the portion of the valve assembly (20) and the conduit (30) is opened, and the coolant is sprayed out along the conduit (30) and the nozzle (60).

2. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 1, characterized in that: The electromagnet assembly (10) comprises: an outer shell (11), one end of which is connected to the inner through hole (102); a second sealing member (12) connected to the outer shell (11) and forming a seal with the inner through hole (102); a coil (13) arranged in the outer shell (11), and a terminal (13-1) on the coil (13) passes through the outer shell (11); an inner sleeve (14) arranged in the outer shell (11); a first spring (15) arranged in the inner sleeve (14); a yoke (16) arranged in the inner sleeve (14), one end of which contacts the first spring (15); an armature (17) arranged in the inner sleeve (14) and spaced apart from the yoke (16); and a second spring (18) arranged in the armature (17) and in contact with the other end of the yoke (16).

3. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 2, characterized in that: A first inner space is provided on the armature (17); a filling seal (19) is provided in the first inner space.

4. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 3, characterized in that: The valve assembly (20) comprises: a valve body (21), one end of which is connected to the outer shell (11) and the inner sleeve (14), and the valve body (21) has a second inner space; a valve core (22), which is arranged in the second inner space and divides the second inner space into a first space (21-1) and a second space (21-2), and one end of the valve core (22) contacts and abuts against the filling seal (19); a third spring (23), which is sleeved on the valve core (22) and is arranged between the valve body (21) and the valve core (22). and is arranged in the first space (21-1); a screw plug (24) connected to a threaded through hole (21-3) on a side wall of the valve body (21), the threaded through hole (21-3) being in communication with the first space (21-1); a third sealing member (25) connected to the valve core (22) to form a seal between the valve core (22) and the valve body (21); and a fourth sealing member (26) connected to the valve core (22) to form a seal between the valve core (22) and the conduit (30).

5. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 4, characterized in that: A second stepped through hole (22-1) is provided at the middle position of the valve core (22).

6. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 5, characterized in that: A third stepped through hole (30-1) is provided at a middle position of the conduit (30), and the third stepped through hole (30-1) is communicated with the second stepped through hole (22-1).

7. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 6, characterized in that: The conduit (30) comprises: a joint section (31), connected to the valve body (21), sleeved on the valve body (21), and in contact with the fourth sealing member (26) at a middle position; the joint section (31) has a plurality of through-holes (31-1), and the through-holes (31-1) communicate with the second space (21-2) and the cooling liquid cavity (103); a tapered pipe section (32), one end of which is connected to the joint section (31); and a plug-in section (33), connected to the other end of the tapered pipe section (32), plugged into the first stepped through hole (104), and having the first sealing member (40); The third stepped through hole (30-1) is provided at a middle position among the joint section (31), the tapered tube section (32) and the plug-in section (33).

8. The split-type pilot solenoid valve for the precision segmented cooling spray beam of a rolling mill according to claim 7, characterized in that: The first sealing member (40) is an O-ring.

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