Proportional electromagnetic regulating valve applied to severe environment

Abstract

The invention discloses a proportional electromagnetic regulating valve applied to a harsh environment, and relates to the technical field of pressure regulation of harsh liquid media, the proportional electromagnetic regulating valve comprises a valve body module, a regulating module and a driving module, the valve body module is used for circulating media, the regulating module is installed on the valve body module, and the regulating module is arranged corresponding to a valve cavity of the valve body module; a sealing assembly is arranged at the lower end of the adjusting module and used for isolating components in the adjusting module from media in the valve body module, a valve rod of the adjusting module is filled with lubricating oil, and the driving module is installed on the periphery of the adjusting module and used for driving the adjusting module to act. The pressure regulating valve can meet the pressure regulating requirement of a harsh liquid medium, and meanwhile is good in reliability and long in service life.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure regulation for harsh liquid media, and particularly to a proportional electromagnetic control valve applied to a harsh environment. Background Art

[0002] Pressure regulation technology has been widely applied in industries such as semiconductors, pharmaceuticals, petroleum, chemical engineering, power, and new energy. Currently, small-diameter pipeline pressure regulation technology is mainly applied to the pressure regulation of gas media, and there is less application of small-diameter pipeline pressure regulation technology for liquid media in the industry. In particular, there is almost no pressure regulation for harsh liquid media such as strong acids, strong alkalis, high salts, and seawater.

[0003] Therefore, there is an urgent need to design a proportional electromagnetic control valve that can be applied to a harsh environment to solve the problem of pressure regulation for harsh liquid media such as strong acids, strong alkalis, high salts, and seawater. Summary of the Invention

[0004] The object of the present invention is to provide a proportional electromagnetic control valve applied to a harsh environment to solve the problems existing in the above-mentioned prior art, meet the pressure regulation requirements of harsh liquid media, and at the same time, have good reliability and a long service life.

[0005] To achieve the above object, the present invention provides the following solution:

[0006] The present invention provides a proportional electromagnetic control valve applied to a harsh environment, including a valve body module, an adjustment module, and a drive module. The valve body module is used for the flow of the medium. The adjustment module is installed on the valve body module and is arranged corresponding to the valve cavity of the valve body module. A sealing component is provided at the lower end of the adjustment module, and the sealing component is used to isolate the components inside the adjustment module from the medium inside the valve body module. The valve stem of the adjustment module is filled with lubricating oil. The drive module is installed on the outer periphery of the adjustment module, and the drive module is used to drive the adjustment module to act.

[0007] Preferably, the valve body module includes a valve seat and a valve nozzle. Medium inlets and medium outlets are respectively provided on both sides of the valve seat. A medium channel is provided in the middle of the valve seat. A valve cavity is provided at the upper end of the valve seat. One end of the medium inlet communicates with the outside, and the other end of the medium inlet communicates with the medium channel. The upper end of the medium channel communicates with the valve cavity, and the valve cavity communicates with the medium outlet. The valve nozzle is installed in the medium channel, and there is a gap between the lower end of the valve nozzle and the lower end surface of the medium channel.

[0008] Preferably, the adjustment module includes a sealing assembly, a rubber pad, a rubber fixing ring, a spring piece, a fixing pin, a valve core and a valve stem. The sealing assembly is installed on the inner bottom surface of the valve cavity, and the lower end of the valve stem extends into the valve cavity and is connected to the upper end of the sealing assembly. The rubber fixing ring is installed in the sealing assembly, and the lower end of the rubber fixing ring is arranged close to the inner bottom surface of the valve cavity. The rubber pad is installed at the rubber plugging opening at the lower end of the rubber fixing ring. The spring piece is located in the cavity of the valve stem, and the spring piece is installed at the lower end of the cavity of the valve stem through the fixing pin. The fixing pin is located above the rubber pad. The valve core is movably installed in the valve stem. The shoulder of the fixing pin can abut against the lower end of the spring piece, and the upper end of the fixing pin can pass through the spring piece and be connected to the lower end of the valve core.

[0009] Preferably, the sealing assembly includes a sealing ring, a sealing diaphragm and a sealing piece support. The upper end of the sealing piece support is threadedly connected to the lower end of the valve stem. The sealing ring is installed on the inner bottom surface of the valve cavity, and an opening is provided at the lower end of the sealing ring. The sealing diaphragm plugs the opening at the inner bottom surface of the sealing ring. The lower end of the sealing piece support is connected to the inside of the sealing ring, and the sealing piece support can press the sealing diaphragm tightly in the sealing ring.

[0010] Preferably, the sealing diaphragm is made of soluble polytetrafluoroethylene material, and the thickness of the sealing diaphragm gradually decreases from the middle of the sealing diaphragm to the outer edge of the sealing diaphragm.

[0011] Preferably, an annular sealing groove is provided on the outer side wall of the valve stem. The annular sealing groove is arranged close to the lower end of the valve stem. A valve stem sealing ring is embedded in the annular sealing groove, and the outer ring of the valve stem sealing ring contacts the inner wall of the valve cavity.

[0012] Preferably, a limiting step is provided on the inner wall of the valve stem. The limiting step is used to limit the upward movement stroke of the valve core.

[0013] Preferably, the driving module includes a coil base, a coil shaft and a coil body. The coil base is installed on the upper end of the valve body module, and the coil base is sleeved on the outer periphery of the valve stem. The coil shaft is located at the upper end of the coil base, and the coil shaft is sleeved on the outer periphery of the valve stem. The coil body is wound around the outer periphery of the coil shaft, and the coil body can control the movement of the valve core in the adjustment module. A control chip is built in the coil body.

[0014] Preferably, a heat dissipation component is further provided on the driving module. The heat dissipation component includes a heat sink, a refrigeration element, and a temperature detection element. The heat sink is sleeved on the outer periphery of the coil body, and the inner wall of the heat sink is tightly attached to the outer wall of the coil body through a thermal conductive silicone layer. The temperature detection element is installed on the coil body and is electrically connected to the refrigeration element. The refrigeration element is installed on the heat sink.

[0015] Preferably, the heat sink is made of aluminum alloy material, and the refrigeration element is a Peltier.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The proportional electromagnetic regulating valve applied to a harsh environment provided by the present invention includes a valve body module, an adjustment module, and a driving module. The valve body module is used for the medium to flow through. The adjustment module is installed on the valve body module and is arranged corresponding to the valve cavity of the valve body module. A sealing component is provided at the lower end of the adjustment module. The sealing component is used to isolate the components in the adjustment module from the medium in the valve body module, thereby preventing the medium entering the valve body module from directly contacting the core metal components in the adjustment module. When the introduced medium is strong acid, strong base, high salt, seawater, etc., the medium will not erode the core metal components in the adjustment module, prolonging the overall service life. The valve stem of the adjustment module is filled with lubricating oil. Through the setting of the lubricating oil, it can be used for lubricating the components and absorbing the working heat, and is also beneficial to improving the overall service life and reliability, facilitating installation and maintenance. The driving module is installed on the outer periphery of the adjustment module and is used to drive the adjustment module to act. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the proportional electromagnetic regulating valve applied to a harsh environment in the present invention;

[0020] Figure 2 It is an exploded view of the proportional electromagnetic regulating valve applied to a harsh environment in the present invention;

[0021] Figure 3 It is a schematic structural diagram of the valve seat in the present invention;

[0022] Figure 4 It is a schematic structural diagram of the valve nozzle in the present invention;

[0023] Figure 5 This is the front view of the sealing ring in the present invention;

[0024] Figure 6 This is the top view of the sealing ring in the present invention;

[0025] Figure 7 This is the front view of the sealing diaphragm in the present invention;

[0026] Figure 8 This is the top view of the sealing diaphragm in the present invention;

[0027] Figure 9 This is the front view of the sealing piece support in the present invention;

[0028] Figure 10 This is the top view of the sealing piece support in the present invention;

[0029] Figure 11 This is the structural schematic diagram of the rubber fixing ring in the present invention;

[0030] Figure 12 This is the structural schematic diagram of the rubber pad in the present invention;

[0031] Figure 13 This is the structural schematic diagram of the fixing pin in the present invention;

[0032] Figure 14 This is the front view of the spring piece in the present invention;

[0033] Figure 15 This is the top view of the spring piece in the present invention;

[0034] Figure 16 This is the structural schematic diagram of the valve core in the present invention;

[0035] Figure 17 This is the structural schematic diagram of the valve stem in the present invention;

[0036] Figure 18 This is the front view of the sealing ring in the present invention;

[0037] Figure 19 This is the top view of the sealing ring in the present invention;

[0038] Figure 20 This is the structural schematic diagram of the coil base in the present invention;

[0039] Figure 21 This is the structural schematic diagram of the coil shaft in the present invention;

[0040] Figure 22 This is the structural schematic diagram of the coil body in the present invention;

[0041] Figure 23 This is the structural schematic diagram of the heat sink in the present invention;

[0042] In the figure: 1-valve seat, 101-medium inlet, 102-medium passage, 103-valve cavity, 104-medium outlet, 2-valve nozzle, 3-sealing ring, 4-sealing diaphragm, 5-sealing piece support, 6-rubber fixing ring, 601-rubber plug, 7-rubber gasket, 8-fixed pin, 9-spring piece, 10-valve core, 1001-internal thread, 11-valve stem, 1101-annular sealing groove, 12-sealing ring, 13-coil base, 14-coil shaft, 15-coil body, 16-radiating fin, 17-cavity, 18-refrigeration element, 19-temperature detection element. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] The purpose of the present invention is to provide a proportional electromagnetic control valve applied to harsh environments to solve the problems existing in the prior art, meet the pressure regulation requirements of harsh liquid media, and at the same time, have good reliability and long service life.

[0045] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] As Figures 1 - 23 shown, this embodiment provides a proportional electromagnetic control valve applied to harsh environments, which is related to the pressure regulation of harsh liquid media such as strong acids, strong alkalis, high salts, and seawater, and is particularly suitable for applications in small-diameter pipelines and high pressures. The proportional electromagnetic control valve applied to harsh environments provided in this embodiment includes a valve body module, an adjustment module, and a drive module. The valve body module is used for circulating the medium. The adjustment module is installed on the valve body module, and the adjustment module is arranged corresponding to the valve cavity 103 of the valve body module. A sealing assembly is provided at the lower end of the adjustment module. The sealing assembly is used to isolate the components in the adjustment module from the medium in the valve body module, thereby preventing the medium entering the valve body module from directly contacting the core metal components in the adjustment module, ensuring that when the introduced medium is strong acids, strong alkalis, high salts, and seawater, etc., the medium will not erode the core metal components in the adjustment module, extending the overall service life. The valve stem 11 of the adjustment module is filled with lubricating oil, and the lubricating oil is preferably silicone oil, which can be used for lubricating the components and absorbing working heat, and is also beneficial to improving the overall service life and reliability, and facilitating installation and maintenance. The drive module is installed on the outer periphery of the adjustment module, and the drive module is used to drive the adjustment module to act.

[0047] Specifically, the valve body module includes a valve seat 1 and a valve nozzle 2. Medium inlets 101 and a medium outlet 104 are respectively provided on both sides of the valve seat 1. A medium passage 102 is provided in the middle of the valve seat 1. A valve cavity 103 is provided at the upper end of the valve seat 1. One end of the medium inlet 101 communicates with the outside, and the other end of the medium inlet 101 communicates with the medium passage 102. The upper end of the medium passage 102 communicates with the valve cavity 103. The valve cavity 103 communicates with the medium outlet 104. The valve nozzle 2 is threadedly connected in the medium passage 102, and there is a gap between the lower end of the valve nozzle 2 and the lower end surface of the medium passage 102. As a preferred solution, the diameter of the valve nozzle 2 can be adjusted according to the actual requirements at the rear end. The adjustment range of the diameter is generally designed to be 1 mm to 4 mm.

[0048] The adjustment module includes a sealing component, a rubber pad 7, a rubber fixing ring 6, a spring piece 9, a fixing pin 8, a valve core 10 and a valve stem 11. The sealing component is installed on the inner bottom surface of the valve cavity 103, and the lower end of the valve stem 11 extends into the valve cavity 103 and is connected to the upper end of the sealing component. The rubber fixing ring 6 is installed in the sealing component, and the lower end of the rubber fixing ring 6 is arranged close to the inner bottom surface of the valve cavity 103. The rubber pad 7 is installed at the rubber plug 601 at the lower end of the rubber fixing ring 6, and the rubber pad 7 and the rubber fixing ring 6 are in an interference fit. The spring piece 9 is located in the cavity 17 of the valve stem 11, and the spring piece 9 is installed at the lower end of the cavity 17 of the valve stem 11 through the fixing pin 8. The spring piece 9 is provided with holes. The material of the spring piece 9 is selected as high-strength stainless steel, and the pore area of the holes is small, about 1 / 3. While ensuring the required elasticity of the spring piece 9, it can also ensure the required strength of the spring piece 9, meeting the requirement of pressure resistance ≥ 1 Mpa, and thus meeting the working conditions requirements of small diameter and high pressure, which is beneficial to controlling higher pressure adjustment requirements; The fixing pin 8 is located above the rubber pad 7. The valve core 10 is movably installed in the valve stem 11, and a clearance fit is adopted between the inner wall of the valve stem 11 and the outer wall of the valve core 10. The shoulder of the fixing pin 8 can abut against the lower end of the spring piece 9, and the upper end of the fixing pin 8 can pass through the spring piece 9 and be connected to the lower end of the valve core 10.

[0049] As a preferred solution, an external thread is provided on the upper part of the fixing pin 8. During installation, the spring piece 9 is sleeved on the external thread of the fixing pin 8 and is stuck at the shoulder of the fixing pin 8, and then the inner thread 1001 at the lower end of the valve core 10 is connected by using the external thread.

[0050] The sealing assembly includes a sealing ring 3, a sealing diaphragm 4 and a sealing disc holder 5. The upper end of the sealing disc holder 5 is threadedly connected to the lower end of the valve stem 11. Both ends of the sealing disc holder 5 are designed with recesses and threaded buckles. One end is connected to the lower end of the valve stem 11, and the other end is connected to the sealing ring 3. The sealing ring 3 is installed on the inner bottom surface of the valve cavity 103, and the lower end of the sealing ring 3 is provided with an opening. The sealing diaphragm 4 is sealed at the inner bottom opening of the sealing ring 3, thereby ensuring that the sealing diaphragm 4 can effectively isolate the medium and the metal components in the valve stem 11. The lower end of the sealing disc holder 5 is connected to the inside of the sealing ring 3, and the inside of the sealing ring 3 has a recess and a threaded buckle design to facilitate the connection between the sealing disc holder 5 and the sealing ring 3. The sealing disc holder 5 can press the sealing diaphragm 4 into the sealing ring 3. As a preferred solution, the sealing diaphragm 4 and the sealing disc holder 5 are formed by adhesive thermoplastic molding. The sealing ring 3 is stuck at the edge where the sealing diaphragm 4 and the sealing disc holder 5 are combined. Combined with the design of the sealing diaphragm 4, secondary sealing can be achieved, ensuring the reliability of the design.

[0051] The sealing diaphragm 4 is made of soluble polytetrafluoroethylene, which not only meets the regulation requirements of harsh liquid media such as strong acids, strong bases, high salts, and seawater, but also ensures a sealing function based on pressure regulation accuracy. Specifically, the sealing diaphragm 4 separates the medium from the valve core 10 within the valve stem 11, ensuring that the valve core 10 is not corroded by strong acids, strong bases, high salts, and seawater. The thickness of the sealing diaphragm 4 gradually decreases from the middle to the outer edge of the sealing diaphragm 4.

[0052] An annular sealing groove 1101 is provided on the outer wall of the valve stem 11. The annular sealing groove 1101 is provided close to the lower end of the valve stem 11. The valve stem 11 sealing ring 12 is embedded in the annular sealing groove 1101, and the outer ring of the valve stem 11 sealing ring 12 contacts the inner wall of the valve cavity 103.

[0053] The inner wall of the valve stem 11 is provided with a limiting step, which is used to limit the upward movement of the valve core 10.

[0054] The drive module includes a coil base 13, a coil shaft 14, and a coil body 15. The coil base 13 is installed at the upper end of the valve body module, and the coil base 13 is sleeved on the outer periphery of the valve stem 11. The coil shaft 14 is located at the upper end of the coil base 13, and the coil shaft 14 is sleeved on the outer periphery of the valve stem 11. The coil body 15 is wound around the outer periphery of the coil shaft 14, and the coil body 15 can control the movement of the valve core 10 in the regulating module. The coil body 15 has a built-in control chip, and then the signal feedback is performed through the control chip. The control module determines whether the working status of the coil body 15 requires protective measures based on the signal feedback of the control chip, so as to avoid the performance degradation of the coil body 15 due to long-term operation. As a preferred solution, the coil body 15 is equipped with a control chip at the winding end.

[0055] The driving module is also provided with a heat dissipation component. The setting of the heat dissipation component can ensure the overall temperature of the coil body 15 to be stable during operation. The heat dissipation component includes a heat sink 16, a refrigeration element 18 and a temperature detection element 19. The heat sink 16 is sleeved on the outer periphery of the coil body 15, and the inner wall of the heat sink 16 is tightly attached to the outer wall of the coil body 15 through a thermal conductive silicone layer. The temperature detection element 19 is installed on the coil body 15 and is electrically connected to the refrigeration element 18. Furthermore, the control module controls the working state of the refrigeration element 18 according to the signal feedback of the temperature detection element 19, so as to ensure the overall temperature of the coil body 15 to be stable during operation.

[0056] The refrigeration element 18 is installed on the heat sink 16, and the refrigeration element 18 and the temperature detection element 19 are located on the opposite sides, which can improve the authenticity of temperature detection.

[0057] The heat sink 16 is made of aluminum alloy material, and the refrigeration element 18 is a Peltier.

[0058] In this embodiment, for the materials of the valve seat 1, the valve nozzle 2, the sealing ring 3, the sealing piece bracket 5, the rubber fixing ring 6 and the fixing pin 8, high-strength and anti-corrosion materials such as polyether ether ketone (PEEK) are preferably used; the material of the sealing diaphragm 4 is preferably a material with strong corrosion resistance, strong anti-creep property, good compressive strength and tensile strength, such as soluble polytetrafluoroethylene (PFA); the material of the spring piece 9 is preferably a high-strength stainless steel material; the material of the valve iron core 10 is preferably a soft magnetic alloy material with excellent performance; the material of the valve stem 11 is a welded body of soft magnetic alloy and stainless steel material, wherein the top of the valve stem 11 is made of soft magnetic alloy material and the middle and lower parts are made of stainless steel material.

[0059] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A proportional electromagnetic regulating valve applied to a harsh environment, characterized in that: It includes a valve body module, an adjustment module, and a drive module. The valve body module is used for the flow of the medium. The adjustment module is installed on the valve body module and is arranged corresponding to the valve cavity of the valve body module. A sealing component is provided at the lower end of the adjustment module, and the sealing component is used to isolate the components inside the adjustment module from the medium inside the valve body module. Lubricating oil is filled in the valve stem of the adjustment module. The drive module is installed on the outer periphery of the adjustment module and is used to drive the adjustment module to act.

2. The proportional electromagnetic control valve applied to a harsh environment according to claim 1, characterized in that: The valve body module includes a valve seat and a valve nozzle. A medium inlet and a medium outlet are respectively provided on both sides of the valve seat. A medium channel is provided in the middle of the valve seat. A valve cavity is provided at the upper end of the valve seat. One end of the medium inlet communicates with the outside, and the other end of the medium inlet communicates with the medium channel. The upper end of the medium channel communicates with the valve cavity, and the valve cavity communicates with the medium outlet. The valve nozzle is installed in the medium channel, and there is a gap between the lower end of the valve nozzle and the lower end surface of the medium channel.

3. The proportional electromagnetic control valve applied to harsh environments according to claim 1, wherein: The adjustment module includes a sealing component, a rubber pad, a rubber fixing ring, a spring piece, a fixing pin, a valve core, and a valve stem. The sealing component is installed on the inner bottom surface of the valve cavity, and the lower end of the valve stem extends into the valve cavity and is connected to the upper end of the sealing component. The rubber fixing ring is installed inside the sealing component, and the lower end of the rubber fixing ring is arranged close to the inner bottom surface of the valve cavity. The rubber pad is installed at the rubber plugging opening at the lower end of the rubber fixing ring. The spring piece is located inside the cavity of the valve stem, and the spring piece is installed at the lower end of the cavity of the valve stem through the fixing pin. The fixing pin is located above the rubber pad. The valve core is movably installed inside the valve stem. The shoulder of the fixing pin can abut against the lower end of the spring piece, and the upper end of the fixing pin can pass through the spring piece and be connected to the lower end of the valve core.

4. The proportional electromagnetic control valve applied to a harsh environment according to claim 3, characterized in that: The sealing component includes a sealing ring, a sealing diaphragm, and a sealing piece support. The upper end of the sealing piece support is threadedly connected to the lower end of the valve stem. The sealing ring is installed on the inner bottom surface of the valve cavity, and an opening is provided at the lower end of the sealing ring. The sealing diaphragm plugs the opening at the inner bottom surface of the sealing ring. The lower end of the sealing piece support is connected to the inside of the sealing ring, and the sealing piece support can press the sealing diaphragm tightly inside the sealing ring.

5. The proportional electromagnetic control valve applied to a harsh environment according to claim 4, characterized in that: The sealing diaphragm is made of a soluble polytetrafluoroethylene material, and the thickness of the sealing diaphragm gradually decreases from the middle of the sealing diaphragm to the outer edge of the sealing diaphragm.

6. The proportional electromagnetic control valve applied to a harsh environment according to claim 3, characterized in that: An annular sealing groove is provided on the outer side wall of the valve stem, and the annular sealing groove is arranged close to the lower end of the valve stem. A valve stem sealing ring is embedded in the annular sealing groove, and the outer ring of the valve stem sealing ring contacts the inner wall of the valve cavity.

7. The proportional electromagnetic control valve applied to a harsh environment according to claim 3, wherein: A limiting step is provided on the inner wall of the valve stem, and the limiting step is used to limit the upward movement stroke of the valve core.

8. The proportional electromagnetic control valve applied to a harsh environment according to claim 1, wherein: The driving module includes a coil base, a coil shaft and a coil body. The coil base is installed at the upper end of the valve body module, and the coil base is sleeved on the outer periphery of the valve stem. The coil shaft is located at the upper end of the coil base, and the coil shaft is sleeved on the outer periphery of the valve stem. The coil body is wound around the outer periphery of the coil shaft, and the coil body can control the movement of the valve iron core in the adjustment module. A control chip is built in the coil body.

9. The proportional electromagnetic regulating valve applied to a harsh environment according to claim 8, characterized in that: A heat dissipation component is further provided on the driving module. The heat dissipation component includes a heat sink, a refrigeration element and a temperature detection element. The heat sink is sleeved on the outer periphery of the coil body, and the inner wall of the heat sink is tightly attached to the outer wall of the coil body through a thermal conductive silicone layer. The temperature detection element is installed on the coil body, and the temperature detection element is electrically connected to the refrigeration element. The refrigeration element is installed on the heat sink.

10. The proportional electromagnetic control valve applied to a harsh environment according to claim 9, wherein: The heat sink is made of aluminum alloy material, and the refrigeration element is a Peltier.

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