A control valve and control method for a perfluoroalkylethyl acrylate reaction solvent regeneration apparatus

Abstract

The present application relates to the technical fields of control valve, provide a kind of perfluoroalkyl ethyl acrylate reaction solvent regenerating unit control valve and control method, including: for placing overall control valve bottom plate;Valve shell with streamlined inner wall is provided, the top of the valve shell is provided with top layer passageway, the two sides of the valve shell are fixedly connected with solution pipe group, valve body unit being arranged in the inner wall of valve shell and the execution unit being arranged in the top of valve shell and cooperating with valve body unit work;Scraping brush unit for eliminating high-viscosity solvent remaining in the dead angle between valve body unit and valve shell, solvent will pass through one side solution pipe group and enter into the valve shell, execution unit will control the position of valve core, when valve core enters into valve body unit, will block the flow of solvent, when valve core separates from valve body unit, make solvent flow, in the process of solvent flow, scraping brush unit can eliminate high-viscosity solvent in the dead angle between valve body unit and valve shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of control valves, in particular to a perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve and control method. BACKGROUND

[0002] Perfluoroalkyl ethyl acrylate is a key reaction solvent in the field of polymer synthesis and fine chemical industry. Due to the high fluorine structure of the molecular difluoromethylene chain, it has excellent weather resistance, chemical stability and compatibility with the reaction system, and is widely used in the preparation of high-end materials. However, its high viscosity at 25℃ and weak corrosiveness caused by high fluorine structure bring challenges to the accurate control of the solvent regeneration process: ordinary control valves are prone to flow channel retention and caking, and sealing failure, resulting in insufficient purity of the regenerated solvent, increased loss rate, and difficulty in meeting the efficiency and environmental protection requirements of industrial continuous production. SUMMARY

[0003] The purpose of the present application is to solve the problems of ordinary control valves, such as flow channel retention and caking, and sealing failure, and to provide a perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve and control method.

[0004] The technical solution adopted by the present application to solve its technical problems is: a perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve and control method, comprising: a bottom plate for placing the overall control valve;

[0005] The valve housing is provided with a streamlined inner wall, the bottom of the valve housing is fixedly connected with a supporting base, the top of the valve housing is provided with a top channel, and the two sides of the valve housing are fixedly connected with a solution pipe group, the outer surface of the solution pipe group is fixedly connected with a supporting frame;

[0006] The valve body unit is arranged on the inner wall of the valve housing, and the execution unit is arranged on the top of the valve housing and cooperates with the valve body unit;

[0007] The shovel brush unit is used to remove the high viscosity solvent retained in the dead angle between the valve body unit and the valve housing;

[0008] The valve body unit includes a closed layer, the water side of the closed layer is provided with a streamlined surface, the outer surface of the closed layer is fixedly connected with a valve body plate, the closed layer is arranged symmetrically around the center of the valve body plate, the inner side of the valve body plate is provided with an inner groove, the fluororubber sealing element is placed in the inner groove, the outer surface of the inner groove is provided with an inner extrusion mechanism, and the bottom of the inner groove is also provided with a closing mechanism;

[0009] The bottom of the fluororubber sealing element is provided with a first notch, the top of the inner groove is provided with a second notch, and the first notch and the second notch are matched with the closing mechanism;

[0010] The inner extrusion mechanism extrudes the fluorine rubber seal from inside, avoiding the non-sealing side of the fluorine rubber seal from contacting the perfluoroalkyl ethyl acrylate reaction solvent.

[0011] Further, the bottom of the support frame is fixedly connected with the top of the bottom plate, the bottom of the support base is fixedly connected with the top of the bottom plate, and the end of the closed layer away from the valve body plate is fixedly connected with the inner wall of the valve shell.

[0012] Further, the inner extrusion mechanism comprises a first support column, the outer surface of the first support column is slidably connected with an extrusion block, the outer surface of the extrusion block is fixedly connected with a magnetic ring, and the end of the magnetic ring away from the extrusion block is fixedly connected with a first telescopic spring.

[0013] Further, one end of the first support column is fixedly connected with the outer surface of the inner groove, and the end of the first telescopic spring away from the magnetic ring is fixedly connected with the outer surface of the inner groove.

[0014] Further, the closed mechanism comprises a second support column, the top of the second support column is fixedly connected with a sealing layer, the top of the sealing layer is fixedly connected with a protruding block, and the bottom of the second support column is fixedly connected with a pressure receiving plate.

[0015] Further, the outer surface of the second support column is slidably connected with the inner wall of the valve body plate, the sealing layer is in the inner groove, and the pressure receiving plate is at the bottom of the valve body plate.

[0016] The shape of the protruding block is matched with the first notch and the second notch.

[0017] Further, the execution unit comprises a cylinder body, the top of the cylinder body is fixedly connected with a cylinder device, the output end of the cylinder device is fixedly connected with a first push rod, the output end of the first push rod is fixedly connected with a second push rod, the cylinder device drives the first push rod and the second push rod to move up and down, the top of the first push rod is fixedly connected with a second telescopic spring, the inner wall of the bottom of the cylinder body is fixedly connected with an insulation layer, the bottom of the second push rod is fixedly connected with a valve core block, and the inner wall of the valve core block is fixedly connected with a magnetic block attracting a magnetic ring.

[0018] Further, the bottom end of the cylinder body is fixedly connected with the top of the valve shell, and the outer surface of the second push rod is tightly combined with the outer surface of the insulation layer.

[0019] Further, the shovel brush unit comprises an annular groove arranged at the bottom of the valve shell, an outer surface of the annular groove is fixedly connected with a third supporting column, an outer surface of the third supporting column is slidably connected with a moving block, a top of the moving block is fixedly connected with a trapezoidal block, a bottom of the trapezoidal block is fixedly connected with a micro motor, an output end of the micro motor is fixedly connected with a flow control plate, and the bottom of the trapezoidal block is also fixedly connected with a scraping inner plate.

[0020] The scraping inner plate is in contact with the streamlined inner wall of the valve shell and the dead angle between the sealing layer and the valve shell.

[0021] A control method of a control valve of a perfluoroalkyl ethyl acrylate reaction solvent regeneration device, comprising the following steps:

[0022] S1: when the perfluoroalkyl ethyl acrylate reaction solvent is in the feeding stage, the execution unit adjusts the opening degree of the valve core in advance, thereby controlling the flow of the solvent;

[0023] S2: when the perfluoroalkyl ethyl acrylate reaction solvent is in the rectification stage, the execution unit slows down the speed of the valve core to avoid rapid adjustment causing the sealing surface to wear;

[0024] S3: when the perfluoroalkyl ethyl acrylate reaction solvent is in the discharging stage, the execution unit maintains the fixed opening degree of the valve core to ensure stable flow, and first closes 80% of the opening degree and then slowly closes the remaining 20% when stopping, so as to avoid instantaneous impact of the solvent causing sealing failure;

[0025] S4: when it is necessary to completely close the flow of the perfluoroalkyl ethyl acrylate reaction solvent, the execution unit controls the valve core to tightly adhere to the valve body unit and protects the sealing element.

[0026] The perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve and the control method have the following beneficial effects:

[0027] (1) Since the perfluoroalkyl ethyl acrylate has the characteristic of high viscosity, if the perfluoroalkyl ethyl acrylate solvent stays in the inner wall or dead angle of the valve body, it will mix and agglomerate with residual impurities within 2-3 days, block the flow channel and cause the feeding / reflux to be interrupted, so it is necessary to stop and disassemble for cleaning, therefore, the streamlined inner wall and the streamlined surface are arranged on the inner wall of the valve shell and the water-facing side of the sealing layer respectively, and the roughness of the streamlined inner wall and the streamlined surface is made to be less than 0.8 μm, so that the high-viscosity solvent can flow smoothly;

[0028] (2) Set up the shovel and brush unit, first the miniature motor drives the control flow plate to rotate towards a direction, make the control flow plate and the direction of water flow produce inclination, after in the process of solvent flow, the solvent will pass through the trapezoidal block and produce impact force to the water side of the control flow plate, the impact force will make the moving block move along the third support column, thereby drive the scraping inner plate to shovel and brush the flow line type inner wall and the dead angle between the flow line type inner wall and the flow line type surface, avoid the impurities in the solvent to be stuck in the surface and the dead angle in the solvent feeding stage, hinder the smooth flow of high viscosity solvent;

[0029] (3) By setting fluorine rubber sealing element in the inner groove, ensure zero leakage when cutting off solvent flow, avoid solvent volatilization or impurities mixing, but the conventional control valve is through when the fluid passes through the valve body, the fluid pressure will act on the non-sealing side of the rubber element, further press the rubber element on the sealing surface, the higher the pressure, the closer the fit, realize "self-sealing" effect, while the fluorine rubber sealing element, long-term contact with high viscosity solvent will cause "swelling-hardening", cause the fluorine rubber sealing element to deform, affect the sealing effect, so by setting the inner extrusion mechanism, when the valve core moves downward and is attached with the valve body plate, the inner extrusion mechanism will extrude the fluorine rubber sealing element inside, instead of extruding by the solvent outside.

[0030] (4) At the same time in the process of solvent flow, perfluoroalkyl ethyl acrylate reaction solvent will also contact with the fluorine rubber sealing element, long-term contact will also cause the fluorine rubber sealing element to deform, so the sealing mechanism is set, the impact of solvent flow will make the fluorine rubber sealing element be isolated and cannot contact with the perfluoroalkyl ethyl acrylate reaction solvent. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the schematic diagram of the three-dimensional structure of the present application;

[0032] Figure 2 It is the structure bottom view of the present application;

[0033] Figure 3 It is the overall structure sectional view of the present application;

[0034] Figure 4 It is the structure sectional view of the valve shell of the present application;

[0035] Figure 5 It is the structure schematic diagram of the valve body unit of the present application;

[0036] Figure 6 It is the structure sectional view of the valve body unit of the present application;

[0037] Figure 7 It is the structure schematic diagram of the inner extrusion mechanism of the present application;

[0038] Figure 8 It is the structure schematic diagram of the sealing mechanism of the present application;

[0039] Figure 9 is a structural schematic diagram of the execution unit of the present application;

[0040] Figure 10 is a structural schematic diagram of the valve core block of the present application;

[0041] Figure 11 is a position schematic diagram of the brush unit of the present application;

[0042] Figure 12 is a structural schematic diagram of the brush unit of the present application;

[0043] Figure 13 is a flow chart of the control method of the present application.

[0044] In the figure: 1, bottom plate; 2, valve shell; 3, top layer channel; 4, brush unit; 5, streamlined inner wall; 6, valve body unit; 7, execution unit; 8, solution pipe group; 9, support frame; 10, support base; 61, closing layer; 62, streamlined surface; 63, valve body plate; 64, inner groove; 65, fluorine rubber sealing element; 66, inner extrusion mechanism; 67, closing mechanism; 68, first notch; 69, second notch; 661, first support column; 662, extrusion block; 663, magnetic ring; 664, first extension spring; 671, second support column; 672, sealing layer; 673, protruding block; 674, pressure plate; 71, cylinder body; 73, cylinder device; 74, first push rod; 75, second extension spring; 76, insulation layer; 77, second push rod; 78, valve core block; 79, magnetic block; 41, ring groove; 42, third support column; 43, moving block; 44, trapezoidal block; 45, micro motor; 46, flow control plate; 47, scraping inner plate. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the further examples described herein are only used to explain the present application and do not limit the present application.

[0046] As shown in Figures 1-4 , the control valve can be installed at the solvent feed pipe, rectifying column reflux pipe and solvent discharge pipe of the perfluoroalkyl ethyl acrylate reaction solvent regeneration device, and its functions are respectively adjusting the feed flow, avoiding impurities blocking the subsequent pipeline, controlling the reflux ratio and sealing the cutoff to prevent solvent evaporation, but due to the characteristics of perfluoroalkyl ethyl acrylate reaction solvent, such as high fluorine content, high viscosity, weak corrosion, high temperature decomposition, the ordinary valve body will cause the sealing structure to fail and the flow channel to be stagnant and blocked, so a perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve is designed, which comprises: a bottom plate 1 for placing the whole control valve;

[0047] The valve shell 2 is provided with a streamlined inner wall 5, the bottom of the valve shell 2 is fixedly connected with a support base 10, the top of the valve shell 2 is provided with a top layer channel, and the two sides of the valve shell 2 are fixedly connected with a solution pipe group 8, and the outer surface of the solution pipe group 8 is fixedly connected with a support frame 9;

[0048] The valve body unit 6 is arranged on the inner wall of the valve shell 2, and the execution unit 7 is arranged on the top of the valve shell 2 and cooperates with the valve body unit 6;

[0049] The shovel brush unit 4 is arranged on the bottom of the valve shell 2, and the third support column 42 is fixedly connected with the outer surface of the ring groove 41, the outer surface of the third support column 42 is slidably connected with a moving block 43, the top of the moving block 43 is fixedly connected with a trapezoidal block 44, the bottom of the trapezoidal block 44 is fixedly connected with a micro motor 45, the output end of the micro motor 45 is fixedly connected with a flow control plate 46, and the bottom of the trapezoidal block 44 is further fixedly connected with a scraping inner plate 47;

[0050] In the working process of the present application, the solvent enters the valve shell 2 through the solution pipe group 8 on one side, the execution unit 7 controls the position of the valve core, when the valve core enters the valve body unit 6, the flow of the solvent is blocked, when the valve core is separated from the valve body unit 6, the flow of the solvent is unblocked, and in the process of the flow of the solvent, the shovel brush unit 4 removes the high-viscosity solvent in the dead angle between the valve body unit 6 and the valve shell 2.

[0051] As shown in Figures 5-6 The valve body unit 6 includes a closed layer 61, the water-facing side of the closed layer 61 is provided with a streamlined surface 62, the outer surface of the closed layer 61 is fixedly connected with a valve body plate 63, the closed layer 61 is centrally symmetrically arranged around the valve body plate 63, the inner side of the valve body plate 63 is provided with an inner groove 64, the fluororubber sealing element 65 is placed in the inner groove 64, the outer surface of the inner groove 64 is provided with an inner extrusion mechanism 66, and the bottom of the inner groove 64 is further provided with a sealing mechanism 67.

[0052] Due to the high-viscosity characteristics of perfluoroalkyl ethyl acrylate, if the perfluoroalkyl ethyl acrylate solvent is retained in the inner wall or dead angle of the valve body, it will be mixed and caked with residual impurities within 2-3 days, causing blockage of the flow channel and interruption of feeding / reflow, so the inner wall of the valve shell 2 and the water-facing side of the closed layer 61 are respectively provided with a streamlined inner wall 5 and a streamlined surface 62, and the roughness of the streamlined inner wall 5 and the streamlined surface 62 is made to be less than 0.8 μm, so that the high-viscosity solvent can flow smoothly.

[0053] As shown in Figures 11-12 The shovel brush unit 4 includes a ring groove 41 arranged on the bottom of the valve shell 2, a third support column 42 fixedly connected with the outer surface of the ring groove 41, a moving block 43 slidably connected with the outer surface of the third support column 42, a trapezoidal block 44 fixedly connected with the top of the moving block 43, a micro motor 45 fixedly connected with the bottom of the trapezoidal block 44, a flow control plate 46 fixedly connected with the output end of the micro motor 45, and a scraping inner plate 47 fixedly connected with the bottom of the trapezoidal block 44.

[0054] The scraping inner plate 47 is attached to the streamlined inner wall 5 of the valve shell 2 and contacts the dead angle between the closing layer 61 and the valve shell 2.

[0055] During the solvent feeding stage, impurities exist in the solvent, which further hinders the flowability of the solvent, so the scraping unit 4 is arranged. First, the micro motor 45 drives the flow control plate 46 to rotate in a direction, so that the flow control plate 46 is inclined to the direction of the water flow. Then, during the solvent flow process, the solvent passes through the trapezoidal block 44 and impacts the water side of the flow control plate 46. The impact force moves the moving block 43 along the third supporting column 42, thereby driving the scraping inner plate 47 to scrape the streamlined inner wall 5 and the dead angle between the streamlined inner wall 5 and the streamlined surface 62, avoiding that the impurities in the solvent are stuck on the surface and the dead angle during the solvent feeding stage, and hindering the smooth flow of the high-viscosity solvent.

[0056] As shown in Figures 9-10 , the execution unit 7 includes a cylinder body 71, the top of the cylinder body 71 is fixedly connected with a cylinder device 73, the output end of the cylinder device 73 is fixedly connected with a first push rod 74, the output end of the first push rod 74 is fixedly connected with a second push rod 77, the cylinder device 73 drives the first push rod 74 and the second push rod 77 to move up and down, the top of the first push rod 74 is fixedly connected with a second extension spring 75, the inner wall bottom of the cylinder body 71 is fixedly connected with an insulation layer 76, the bottom of the second push rod 77 is fixedly connected with a valve core block 78, and the inner wall of the valve core block 78 is fixedly connected with a magnetic block 79 of an attractive magnetic ring 663.

[0057] The cylinder device 73 drives the first push rod 74 and the second push rod 77 to move, thereby changing the positional relationship between the valve core block 78 and the valve body plate 63, and further controlling the flow rate and on-off state of the solvent.

[0058] The bottom end of the cylinder body 71 is fixedly connected with the top of the valve shell 2, and the outer surface of the second push rod 77 is tightly attached to the outer surface of the insulation layer 76.

[0059] As shown in Figure 6 , the bottom of the fluororubber sealing piece 65 is provided with a first notch 68, the top of the inner groove 64 is provided with a second notch 69, and the first notch 68 and the second notch 69 are matched with the closing mechanism 67.

[0060] When the execution unit 7 works with the valve body unit 6, the inner extrusion mechanism 66 extrudes the fluororubber sealing piece 65 from the inside, avoiding that the non-sealing side of the fluororubber sealing piece 65 contacts the perfluoroalkyl ethyl acrylate reaction solvent.

[0061] The bottom of the support frame 9 is fixedly connected with the top of the bottom plate 1, the bottom of the support base 10 is fixedly connected with the top of the bottom plate 1, and the end of the closing layer 61 away from the valve body plate 63 is fixedly connected with the inner wall of the valve shell 2.

[0062] As Figure 7 shown, the inner extrusion mechanism 66 includes a first support column 661, the outer surface of the first support column 661 is slidingly connected with an extrusion block 662, the outer surface of the extrusion block 662 is fixedly connected with a magnetic ring 663, and the end of the magnetic ring 663 away from the extrusion block 662 is fixedly connected with a first telescopic spring 664.

[0063] When the fluid passes through the valve body, the conventional control valve is to act on the non-sealing side of the rubber piece by the fluid pressure, and the rubber piece is further pressed on the sealing surface. The higher the pressure, the tighter the fit, and the "self-sealing" effect is achieved. The fluororubber sealing piece 65 will swell and harden when in contact with high-viscosity solvents for a long time, causing the fluororubber sealing piece 65 to deform and affect the sealing effect.

[0064] Therefore, when the valve core block 78 enters the inside of the valve body plate, the magnetic block 79 on the valve core block 78 will attract the magnetic ring 663, so that the extrusion block 662 moves on the first support column 661 and extrudes the fluororubber sealing piece 65, making the fluororubber sealing piece 65 tightly fit with the valve core block 78, avoiding solvent evaporation and leakage, and ensuring zero leakage when the solvent flow is cut off.

[0065] One end of the first support column 661 is fixedly connected with the outer surface of the inner groove 64, and the end of the first telescopic spring 664 away from the magnetic ring 663 is fixedly connected with the outer surface of the inner groove 64.

[0066] As Figure 8 shown, the sealing mechanism 67 includes a second support column 671, the top of the second support column 671 is fixedly connected with a sealing layer 672, the top of the sealing layer 672 is fixedly connected with a protruding block 673, and the bottom of the second support column 671 is fixedly connected with a pressure plate 674.

[0067] At the same time, during the solvent flow process, the perfluoroalkyl ethyl acrylate reaction solvent will also contact the fluororubber sealing piece 65, and long-term contact will also cause the fluororubber sealing piece 65 to deform, so the sealing mechanism 67 is provided, and the solvent flowing will generate an impact force on the pressure plate 674. This force will make the second support column 671 move upwards and drive the sealing layer 672 to close the opening of the inner groove 64, and the protruding block 673 will also enter the second notch 69, so that the inner groove 64 is in a closed state, and the fluororubber sealing piece 65 is isolated and cannot contact the perfluoroalkyl ethyl acrylate reaction solvent.

[0068] Meanwhile, in the process of solvent blocking, the fluororubber sealing piece 65 is pressed to adhere to the valve core block 78, if the sealing is complete, the pressure on the upper and lower sides of the pressure plate 674 is the same, and the supporting column will not move, if there is a leakage, the pressure on the lower side is greater than that on the upper side, so that the protrusion 673 on the sealing layer 672 further extrudes the fluororubber sealing piece 65, and finally enters the first gap 68, realizing double protection of sealing, and further reducing the possibility of solvent leakage.

[0069] The outer surface of the second supporting column 671 is in sliding connection with the inner wall of the valve body plate 63, the sealing layer 672 is in the inner groove 64, and the pressure plate 674 is at the bottom of the valve body plate 63.

[0070] The protrusion 673 is matched with the first gap 68 and the second gap 69 in shape.

[0071] As shown in Figure 13 A control method of a perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve, comprising the following steps:

[0072] S1: When the perfluoroalkyl ethyl acrylate reaction solvent is in the feeding stage, the execution unit 7 adjusts the opening degree of the valve core in advance, so as to control the flow of the solvent;

[0073] S2: When the perfluoroalkyl ethyl acrylate reaction solvent is in the rectification stage, the execution unit 7 slows down the speed of the valve core, so as to avoid that rapid adjustment causes the sealing surface to be worn;

[0074] S3: When the perfluoroalkyl ethyl acrylate reaction solvent is in the discharging stage, the execution unit 7 maintains the fixed opening degree of the valve core, ensures the stable flow, closes 80% of the opening degree first when stopping, and then slowly closes the remaining 20%, so as to avoid that instantaneous impact of the solvent causes the sealing to be invalid;

[0075] S4: When it is necessary to completely close the flow of the perfluoroalkyl ethyl acrylate reaction solvent, the execution unit 7 controls the valve core to tightly adhere to the valve body unit 6 and protects the sealing piece.

[0076] The working process of the perfluoroalkyl ethyl acrylate reaction solvent regeneration device control valve provided by the application is as follows:

[0077] First, the cylinder device 73 drives the first push rod 74 and the second push rod 77 to move, thereby changing the positional relationship between the valve core block 78 and the valve body plate 63, and thus controlling the flow rate and on / off state of the solvent. During the solvent flow, the micro motor 45 drives the flow control plate 46 to rotate in one direction, causing the flow control plate 46 to tilt relative to the direction of the water flow. Then, during the solvent flow, the solvent passes through the trapezoidal block 44 and impacts the water-facing side of the flow control plate 46. This impact causes the moving block 43 to move along the third support column 42, thereby causing the scraping inner plate 47 to scrape and brush the streamlined inner wall 5 and the dead corner between the streamlined inner wall 5 and the streamlined surface 62. The flowing solvent impacts the pressure plate 674, which causes the second support column 671 to move upward and cause the sealing layer 672 to seal the opening of the inner groove 64. The protrusion 673 also enters. Upon reaching the second notch 69, the inner groove 64 is sealed, isolating the fluororubber seal 65. When solvent flow needs to be blocked, the valve core block 78 enters the inner side of the valve body plate, and the magnetic block 79 on the valve core block 78 attracts the magnetic ring 663, causing the extrusion block 662 to move on the first support column 661 and extrude the fluororubber seal 65, making the fluororubber seal 65 fit tightly against the valve core block 78. At the same time, during the solvent blocking process, the fluororubber seal 65 is squeezed and fits against the valve core block 78. If the seal is complete, the pressure on the upper and lower sides of the pressure plate 674 is the same, and the support column will not move. If there is a leak, the pressure below will be greater than the pressure above, causing the protrusion 673 on the sealing layer 672 to further extrude the fluororubber seal 65 and eventually enter the first notch 68, achieving a double guarantee of sealing.

[0078] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, it can refer to a bolted connection, a welded connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0079] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A perfluoroalkylethyl acrylate reaction solvent regeneration apparatus control valve characterized by comprising: Include: The base plate for placing the overall control valve; The valve shell is provided with streamlined inner wall, the bottom of valve shell is fixedly connected with support base, the top of valve shell is provided with top layer channel, both sides of valve shell are fixedly connected with solution pipe group, the outer surface of solution pipe group is fixedly connected with support frame; The valve body unit arranged in the inner wall of the valve shell and the execution unit arranged in the top of the valve shell and cooperating with the valve body unit; The shovel brush unit for eliminating high viscosity solvent stagnated in the dead angle between the valve body unit and the valve shell; The valve body unit includes a closed layer, the water side of the closed layer is provided with a streamlined surface, the outer surface of the closed layer is fixedly connected with a valve body plate, the closed layer is centrally symmetrically arranged around the valve body plate, the inner side of the valve body plate is provided with an inner groove, the inner groove is provided with a fluororubber sealing element, the outer surface of the inner groove is provided with an inner extrusion mechanism, and the bottom of the inner groove is further provided with a closing mechanism; The bottom of the fluororubber sealing element is provided with a first notch, the top of the inner groove is provided with a second notch, and the first notch and the second notch are matched with the closing mechanism; When the execution unit cooperates with the valve body unit, the inner extrusion mechanism extrudes the fluororubber sealing element inside, so that the non-sealing side of the fluororubber sealing element is prevented from being in contact with the perfluoroalkyl ethyl acrylate reaction solvent; The inner extrusion mechanism includes a first support column, the outer surface of the first support column is slidably connected with an extrusion block, the outer surface of the extrusion block is fixedly connected with a magnetic ring, and the end of the magnetic ring away from the extrusion block is fixedly connected with a first telescopic spring; The closing mechanism includes a second support column, the top of the second support column is fixedly connected with a sealing layer, the top of the sealing layer is fixedly connected with a protruding block, and the bottom of the second support column is fixedly connected with a pressure plate; The outer surface of the second support column is slidably connected with the inner wall of the valve body plate, the sealing layer is in the inner groove, and the pressure plate is at the bottom of the valve body plate; The shape of the protruding block is matched with the first notch and the second notch; The execution unit includes a valve core block, and the inner wall of the valve core block is fixedly connected with a magnetic block attracting a magnetic ring.

2. A control valve for a perfluoroalkylethyl acrylate reaction solvent regeneration apparatus according to claim 1, characterized by: The bottom of the support frame is fixedly connected with the top of the base plate, the bottom of the support base is fixedly connected with the top of the base plate, and the end of the closed layer away from the valve body plate is fixedly connected with the inner wall of the valve shell.

3. The control valve for a perfluoroalkylethyl acrylate reactive solvent regeneration apparatus according to claim 1, characterized by: One end of the first support column is fixedly connected with the outer surface of the inner groove, and the end of the first telescopic spring away from the magnetic ring is fixedly connected with the outer surface of the inner groove.

4. The control valve for a perfluoroalkylethyl acrylate reactive solvent regeneration apparatus according to claim 1, characterized by: The execution unit includes a cylinder body, the top of the cylinder body is fixedly connected with a cylinder device, the output end of the cylinder device is fixedly connected with a first push rod, the output end of the first push rod is fixedly connected with a second push rod, the cylinder device drives the first push rod and the second push rod to move up and down, the top of the first push rod is fixedly connected with a second telescopic spring, the inner wall bottom of the cylinder body is fixedly connected with an insulation layer, and the bottom of the second push rod is fixedly connected with the outer surface of the valve core block.

5. A control valve for a perfluoroalkylethyl acrylate reaction solvent regeneration apparatus according to claim 4, characterized by: The bottom end of the cylinder body is fixedly connected with the top of the valve shell, and the outer surface of the second push rod is tightly attached to the outer surface of the insulation layer.

6. A control valve for a perfluoroalkylethyl acrylate reaction solvent regeneration apparatus according to claim 1, characterized by: The shovel brush unit comprises a ring groove arranged at the bottom of the valve shell, an outer surface of the ring groove is fixedly connected with a third supporting column, an outer surface of the third supporting column is slidably connected with a moving block, a top of the moving block is fixedly connected with a trapezoidal block, a bottom of the trapezoidal block is fixedly connected with a micro motor, an output end of the micro motor is fixedly connected with a flow control plate, and the bottom of the trapezoidal block is also fixedly connected with a scraping inner plate. The scraping inner plate is in contact with the streamlined inner wall of the valve shell and the dead angle between the closed layer and the valve shell.

7. A control method of a control valve of a perfluoroalkylethyl acrylate reaction solvent regenerating apparatus, which is suitable for use in a control valve of a perfluoroalkylethyl acrylate reaction solvent regenerating apparatus according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1: when the perfluoroalkyl ethyl acrylate reaction solvent is in the feeding stage, the execution unit adjusts the opening and closing degree of the valve core in advance, thereby controlling the flow of the solvent; S2: when the perfluoroalkyl ethyl acrylate reaction solvent is in the rectification stage, the execution unit slows down the speed of the valve core to avoid rapid adjustment causing the sealing surface to wear; S3: when the perfluoroalkyl ethyl acrylate reaction solvent is in the discharging stage, the execution unit maintains the fixed opening of the valve core to ensure stable flow, closes 80% of the opening first, and then slowly closes the remaining 20% when shutting down, thereby avoiding the instantaneous impact of the solvent on the sealing failure; S4: when the flow of the perfluoroalkyl ethyl acrylate reaction solvent needs to be completely closed, the execution unit controls the valve core to be closely attached to the valve body unit and protects the sealing element.

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