A crystallization-proof over-current regulating valve for high-salt wastewater treatment system

Abstract

The present invention relates to the technical field of regulating valves, and specifically to an anti-crystallization over-flow regulating valve for a high-salt wastewater treatment system. The regulating valve comprises a valve body, a valve stem assembly, a valve cover, an actuator, and a reflux pipe group. A medium flow channel is provided in the valve body. The valve body comprises an inlet section and an outlet section. The valve stem assembly is inserted into the connection between the inlet section and the outlet section. The valve cover is fixedly connected to the valve body. An actuator is arranged at one end of the valve cover away from the valve body. The valve stem assembly passes through the valve cover. One end of the valve stem assembly is located in the valve body. The other end of the valve stem assembly is transmission-connected to the actuator. The actuator drives the valve stem assembly to move linearly. One end of the reflux pipe group is connected to the side wall of the inlet section, and the other end of the reflux pipe group is connected to the side wall of the outlet section. When medium flows through the regulating valve, the medium pressure at one end of the reflux pipe group connected to the inlet section is lower than that at the other end.

Description

Technical Field

[0001] The invention relates to the technical field of regulating valves, in particular to an anti-crystallization over-flow regulating valve for a high-salt wastewater treatment system. Background Art

[0002] Valves are indispensable components in fluid delivery pipelines and are widely used in the field of fluid delivery.

[0003] In the process of transporting some impure media, valve failure often causes media leakage, which may affect production at the very least, and may also cause dangerous accidents in important scenarios such as chemical industry.

[0004] For fluid transportation in high-concentration salt wastewater treatment systems, the focus should be on preventing the occurrence of medium crystallization. Crystals accumulate in the corners of the pipeline and gradually block the pipeline. For valves, when crystals appear on the sealing surface, it also affects the cut-off effect of the regulating valve and causes leakage. The inlet and outlet of the traditional valve body are in the same straight line, and the flow channel inside the valve body must have a bend or flow-through position. The sealing surface of the valve core that needs to be blocked is often a non-cylindrical conical surface. Not only is the casting relatively complicated, but the adhesion on these special-shaped surfaces is not easy to clean during valve maintenance. It is often necessary to increase the maintenance frequency to ensure reliability. Summary of the invention

[0005] The object of the present invention is to provide an anti-crystallization over-current regulating valve for a high-salt wastewater treatment system to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A crystallization-proof over-current regulating valve for a high-salt wastewater treatment system, the regulating valve comprising a valve body, a valve stem assembly, a valve cover, an actuator, and a reflux pipe group, the valve body having a medium flow channel, the valve body comprising an inlet section and an outlet section, the valve stem assembly being inserted into the connection between the inlet section and the outlet section, the valve cover being fixedly connected to the valve body, an actuator being arranged at one end of the valve cover facing away from the valve body, the valve stem assembly passing through the valve cover, one end of the valve stem assembly being located within the valve body, the other end of the valve stem assembly being transmission-connected to the actuator, the actuator driving the valve stem assembly to linearly displace, one end of the reflux pipe group being connected to a side wall of the inlet section, and the other end of the reflux pipe group being connected to a side wall of the outlet section, when medium flows through the regulating valve, the medium pressure at one end of the reflux pipe group connected to the inlet section is lower than that at the other end.

[0008] High-salt wastewater flows in from the inlet of the inlet section, then enters the outlet section, flows through the valve stem assembly, and flows out from the outlet of the outlet section. The present application adds a reflux pipe group, which allows part of the medium to flow back and re-mix with the incoming medium in the inlet section. The flow rate in the valve body flow channel between the two ends of the reflux pipe group can be higher than the flow rate reflected to the outside. Under a larger flow rate, the crystallization of the medium is greatly reduced, and it is not easy to crystallize and adhere to the inner wall of the valve body, especially at the sealing surface that needs to be controlled on and off, so as to keep the interior of the entire regulating valve clean, improve the service life, and reduce the frequency of maintenance.

[0009] The flow passages of the inlet section and the outlet section are perpendicular, the axis of the valve stem assembly coincides with the axis of the outlet section, one end of the outlet section serves as the outlet of the regulating valve, and the other end of the outlet section is connected to the valve cover for closure.

[0010] The inner walls of all flow channels in the outlet section are standard cylindrical and conical surfaces, and after opening the valve cover, all inner walls can be cleaned by directly inserting components. During maintenance, brushes and other tools can be conveniently inserted to clean crystals. The inner walls of all components in this application are of regular shapes, including cylindrical, conical, and flat surfaces, and the component production process and processing quality are also greatly guaranteed.

[0011] The reflux pipe group uses the flow power of the medium in the valve body as the reflux driving force of the reflux medium, and has a gradually contracting and expanding throat structure in the flow channel of the inlet section.

[0012] There is a throat structure in the inlet section, where the flow spontaneously forms a low-pressure area. The outflow medium pressure in the outflow section is higher than the throat position pressure in the inlet section, forming a reflux force. No external power is required to promote medium reflux. Of course, if the valve is used in a scenario where the external flow is small and the pressure difference between the two ends of the valve is small, then the reflux force generated by the self-flow of the medium will be very small, and the reflux flow rate will also be very small. The anti-crystallization effect obtained by increasing the flow rate will be poor. Under this condition, active medium circulation power can be obtained by adding components such as a reflux pump to the reflux pipe group, so that the flow in the reflux pipe group and the combined flow in the valve body can be adjusted within a larger range.

[0013] The reflux pipe group includes a connecting pipe, a connecting block, and a reflux elbow. A connecting seat is arranged on the side wall of the inlet section, and a reflux hole is arranged on the outer surface of the connecting seat facing the inner wall of the inlet section. The connecting block is installed on the side wall of the outflow section, and the inner wall of the connecting block and the inner wall of the outflow section are connected to form a cylindrical surface. A reflux elbow is arranged on one side of the connecting block located in the outflow section, and the opening of the reflux elbow faces away from the outlet of the outflow section. One end of the connecting pipe is connected to the connecting block, and the other end of the connecting pipe is connected to the reflux hole.

[0014] The connecting block and the reflux elbow connected to it can be removed together from the side wall of the outflow section. The side wall of the outflow section is still in the shape of a conventional cylinder without involving complex curved surfaces. The medium flowing through the valve body partially enters the reflux elbow and is injected into the incoming medium through the reflux hole, thereby achieving the effect of increasing the internal flow velocity of the regulating valve.

[0015] The inlet section is tangentially connected to the side wall at one end of the outlet section.

[0016] The inlet section is tangentially connected to the outlet section, and the medium flowing into the outlet section from the inlet section obtains a circumferential velocity. The medium moves in a spiral in the outlet section. The crystals generated in the pipeline in front of the regulating valve move forward in a spiral in the outlet section, have centrifugal force and move away from the center of the flow channel, so that the medium drained back by the reflux pipe group basically does not contain crystals, which is conducive to flushing the reflux pipeline.

[0017] The valve stem assembly includes a core rod and a valve core member. The upper end of the core rod is connected to the actuator, and the lower end of the core rod applies a lifting force to the valve core member. A valve core groove is arranged in the outflow section, and the valve core groove has a cylindrical side surface and a conical bottom surface.

[0018] The valve core part includes a force-bearing sleeve, a rubber block, and a serrated ring. The rubber block is fixed at one end of the force-bearing sleeve, and the force-bearing sleeve is transmission-connected to the core rod. A plurality of serrated rings are arranged at the bottom of the rubber block. The serrated rings are also made of rubber material, and the outer diameter of the serrated rings is equal to the inner diameter of the valve core groove.

[0019] When the regulating valve needs to be closed, the core rod descends, driving the valve core member to descend. The serrated ring first contacts the inner wall of the valve core groove to wipe off any crystals that may appear on the inner wall of the valve core groove. After the valve core member reaches the bottom, the end face of the serrated ring contacts the bottom surface of the valve core groove. The core rod continues to apply downward pressure, causing the rubber block to deform radially. The outer wall of the rubber block with an enlarged outer diameter contacts the cylindrical side wall of the valve core groove as the main seal. The two components of the main seal do not slide relative to each other, forming a reliable static seal. The serrated ring accommodates the wiped-off crystals in the serrated groove, waiting to be flushed after the regulating valve is opened next time. The sealing surface is wiped once before the regulating valve is closed to prevent particles from affecting the sealing effect and causing micro-flow leakage.

[0020] The valve stem assembly also includes a spring, and the core rod includes a screw section, a pressure plate, a core shaft, a limit shoulder, and a plug. A pressure plate is arranged at one end of the core shaft and a plug is arranged at the other end. A limit shoulder is arranged at the end of the core shaft close to the plug, and a screw section is arranged at the end of the pressure plate away from the core shaft. The core shaft passes through a force-bearing sleeve, and a spring is arranged between the force-bearing sleeve and the pressure plate. The limit shoulder is located on the side of the rubber block away from the force-bearing sleeve, and the upper end of the screw section is transmission-connected to the actuator.

[0021] All parts on the core rod serve as a rigid whole, and they drop as a whole when the regulating valve is closed. When the plug has not yet blocked the reflux elbow, the spring has applied force to the valve core component to drop to the lower limit position. When the core rod continues to move downward, the rubber block is compressed and radially deformed to perform the main seal. At the same time, the plug blocks the reflux elbow and closes all flow positions. When the regulating valve is opened, the core rod moves upward, the limit shoulder hooks the rubber block, and the valve core component is pulled up as a whole to fully open the flow channel.

[0022] The outer diameter tolerance of the serration ring is m8, the inner hole tolerance of the valve core groove is H7, and the outer diameter of the rubber block is 1~2mm smaller than the inner hole of the valve core groove.

[0023] The valve core groove and the serrated ring are matched with a transition match in the hole-shaft matching series, and the effect of wiping the inner wall surface during the lifting process is guaranteed.

[0024] An acute angle is formed between the axis of the reflux hole and the axis of the inlet section, and the flow direction in the reflux hole is toward the downstream of the inlet section.

[0025] The inclined reflux hole reduces the tendency of the incoming flow in the inlet section to directly penetrate into the reflux hole, and allows the two fluids to mix relatively smoothly, reducing the flow resistance loss.

[0026] Compared with the prior art, the beneficial effects of the present invention are: the valve stem assembly can be axially removed from the valve body, and after removal, the position in the valve body that is prone to crystallization is directly exposed, which is convenient for cleaning; the valve core component will clean the sealing surface during the process of opening and closing the regulating valve to prevent crystal accumulation; a reflux component is provided to allow a larger flow rate in the regulating valve, and a higher flow rate is maintained in the valve body flow channel to further prevent crystallization. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the appearance of the outlet of the present invention;

[0028] Figure 2 yes Figure 1 View AA in;

[0029] Figure 3 yes Figure 2 The local view at point B in the figure;

[0030] Figure 4 It is a structural schematic diagram of the valve stem assembly of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the present invention in the cut-off state;

[0032] Figure 6 yes Figure 5 The local view at point C in the figure;

[0033] In the figure: 1. valve body; 11. inlet section; 12. outlet section; 13. valve core groove; 14. reflux hole; 15. connecting seat; 2. valve stem assembly; 21. core rod; 211. screw rod section; 212. pressure plate; 213. core shaft; 214. limit shoulder; 215. plug; 22. valve core member; 221. force sleeve; 222. rubber block; 223. serrated ring; 23. spring; 3. valve cover; 4. actuator; 5. reflux pipe group; 51. connecting pipe; 52. connecting block; 53. reflux elbow. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] A crystallization-proof over-current regulating valve for a high-salt wastewater treatment system, the regulating valve comprising a valve body 1, a valve stem assembly 2, a valve cover 3, an actuator 4, and a reflux pipe group 5, wherein the valve body 1 has a medium flow channel, the valve body 1 comprises an inlet section 11 and an outlet section 12, the valve stem assembly 2 is inserted into the connection between the inlet section 11 and the outlet section 12, the valve cover 3 is fixedly connected to the valve body 1, an actuator 4 is arranged at one end of the valve cover 3 away from the valve body 1, the valve stem assembly 2 passes through the valve cover 3, one end of the valve stem assembly 2 is located in the valve body 1, the other end of the valve stem assembly 2 is transmission-connected with the actuator 4, the actuator 4 drives the valve stem assembly 2 to move linearly, one end of the reflux pipe group 5 is connected to the side wall of the inlet section 11, and the other end of the reflux pipe group 5 is connected to the side wall of the outlet section 12, when medium flows through the regulating valve, the medium pressure at one end of the reflux pipe group 5 connected to the inlet section 11 is lower than that at the other end.

[0036] like Figure 1 , 2 As shown, high-salt wastewater flows in from the inlet of the inlet section 11, then enters the outlet section 12, flows through the valve stem assembly 2, and flows out from the outlet of the outlet section 12. The overall flow rate is Q1. The present application adds a reflux pipe group 5. The reflux pipe group 5 allows part of the medium to flow back and re-mix into the incoming medium in the inlet section 11. The flow rate in the reflux pipe group 5 is defined as Q2. Then, the flow rate Q3=Q1+Q2 in the flow channel of the valve body 1 between the two ends of the reflux pipe group 5. Through a certain flow ratio, Q2 and Q3 can be made greater than Q1. Under a larger flow rate, the crystallization of the medium is greatly reduced, and it is not easy to crystallize and adhere to the inner wall of the valve body 1, especially at the sealing surface that needs to be controlled on and off, so as to keep the entire regulating valve clean, improve the service life, and reduce the maintenance frequency.

[0037] The flow passages of the inlet section 11 and the outlet section 12 are perpendicular, the axis of the valve stem assembly 2 coincides with the axis of the outlet section 12, one end of the outlet section 12 serves as the regulating valve outlet, and the other end of the outlet section 12 is connected to the valve cover 3 for sealing.

[0038] like Figure 2 As shown, the inner walls of all flow channels in the outlet section 12 are standard cylindrical and conical surfaces, and after the valve cover 3 is opened, all inner walls can be cleaned by directly inserting components. During maintenance, brushes and other tools can be conveniently inserted to clean crystals. The inner walls of all components of the present application are of conventional shapes, such as cylindrical, conical, and flat surfaces, and the component production process and processing quality are also greatly guaranteed.

[0039] The reflux pipe group 5 uses the flow power of the medium in the valve body 1 as the reflux driving force of the reflux medium, and the flow channel of the inlet section 11 has a gradually contracting and expanding throat structure.

[0040] like Figure 2 As shown, there is a throat structure in the inlet section 11, where the flow spontaneously forms a low-pressure area, and the outflow medium pressure in the outflow section 12 is higher than the throat position pressure in the inlet section 11, forming a reflux force, and no external power is required to promote the reflux of the medium. Of course, if the valve is used in the scenario where the external flow Q1 is small and the pressure difference between the two ends of the valve is small, then the reflux force generated by the self-flow of the medium will be very small, and the generated reflux flow Q2 will also be very small, and the anti-crystallization effect obtained by increasing the flow rate will be poor. Under this working condition, active medium circulation power can be obtained by adding components such as a reflux pump to the reflux pipe group 5, so that the flow Q2 in the reflux pipe group 5 and the combined flow Q3 in the valve body 1 can be adjusted within a larger range.

[0041] The reflux pipe group 5 includes a connecting pipe 51, a connecting block 52, and a reflux elbow 53. A connecting seat 15 is arranged on the side wall of the inlet section 11, and a reflux hole 14 is arranged on the outer surface of the connecting seat 15 facing the inner wall of the inlet section 11. The connecting block 52 is installed on the side wall of the outlet section 12, and the inner wall of the connecting block 52 is connected to the inner wall of the outlet section 12 to form a cylindrical surface. A reflux elbow 53 is arranged on one side of the connecting block 52 located in the outlet section 12, and the opening of the reflux elbow 53 is facing away from the outlet of the outlet section 12. One end of the connecting pipe 51 is connected to the connecting block 52, and the other end of the connecting pipe 51 is connected to the reflux hole 14.

[0042] like Figure 2 , 3 As shown, the connecting block 52 and the reflux elbow 53 connected thereto can be removed together from the side wall of the outflow section 12. The side wall of the outflow section 12 is still in a conventional cylindrical shape without involving complex curved surfaces. The medium flowing through the valve body 1 partially enters the reflux elbow 53 and is injected into the incoming medium through the reflux hole 14, thereby achieving the effect of increasing the internal flow velocity of the regulating valve.

[0043] The inlet section 11 is tangentially connected to the side wall of one end of the outlet section 12 .

[0044] like Figure 1 As shown, the inlet section 11 is tangentially connected to the outlet section 12, and the medium flowing from the inlet section 11 into the outlet section 12 acquires a circumferential velocity. The medium moves in a spiral motion in the outlet section 12, and the crystals generated in the pipeline in front of the regulating valve move forward in a spiral motion in the outlet section 12, having a centrifugal force and moving away from the center of the flow channel, so that the medium directed back by the reflux pipe group 5 basically does not contain crystals, which is conducive to flushing the reflux pipeline.

[0045] The valve stem assembly 2 includes a core rod 21 and a valve core member 22. The upper end of the core rod 21 is connected to the actuator 4. The lower end of the core rod 21 applies a lifting force to the valve core member 22. A valve core groove 13 is provided in the outflow section 12. The valve core groove 13 has a cylindrical side surface and a conical bottom surface.

[0046] The valve core member 22 includes a force-bearing sleeve 221, a rubber block 222, and a serrated ring 223. The rubber block 222 is fixed at one end of the force-bearing sleeve 221. The force-bearing sleeve 221 is transmission-connected to the core rod 21. A plurality of serrated rings 223 are arranged at the bottom of the rubber block 222. The serrated rings 223 are also made of rubber material, and the outer diameter of the serrated rings 223 is equal to the inner diameter of the valve core groove 13.

[0047] like Figure 4 , 5 As shown in , 6, when the regulating valve needs to be closed, the core rod 21 descends to drive the valve core member 22 to descend, and the serrated ring 223 first contacts the inner wall of the valve core groove 13 to wipe off the crystals that may appear on the inner wall of the valve core groove 13. After the valve core member 22 reaches the bottom, the end face of the serrated ring 223 contacts the bottom surface of the valve core groove 13, and the core rod 21 continues to apply downward pressure, and the rubber block 222 deforms radially. The outer wall of the rubber block 222 with an enlarged outer diameter contacts the cylindrical side wall of the valve core groove 13 as the main seal. The two components of the main seal do not slide relative to each other, forming a reliable static seal. The serrated ring 223 accommodates the wiped-off crystals in the serrated groove, waiting to be flushed after the regulating valve is opened next time. The sealing surface is wiped once before the regulating valve is closed to prevent particulate matter from affecting the sealing effect and causing micro-flow leakage.

[0048] The valve stem assembly 2 also includes a spring 23, and the core rod 21 includes a screw segment 211, a pressure plate 212, a core shaft 213, a limiting shoulder 214, and a plug 215. The pressure plate 212 is set at one end of the core shaft 213, and the plug 215 is set at the other end. The limiting shoulder 214 is set at the end of the core shaft 213 close to the plug 215. The screw segment 211 is set at the end of the pressure plate 212 away from the core shaft 213. The core shaft 213 passes through the force sleeve 221. The spring 23 is set between the force sleeve 221 and the pressure plate 212. The limiting shoulder 214 is located on the side of the rubber block 222 away from the force sleeve 221. The upper end of the screw segment 211 is transmission connected to the actuator 4.

[0049] like Figure 2 , 4As shown, the various parts on the core rod 21 act as a rigid whole, and the whole drops when the regulating valve is closed. When the plug 215 has not yet blocked the return elbow 53, the spring 23 has applied force to the valve core member 22 to drop to the lower limit position. When the core rod 21 continues to move downward, the rubber block 222 is compressed and radially deformed to perform the main seal. At the same time, the plug 215 blocks the return elbow 53 and closes all flow positions. When the regulating valve is opened, the core rod 21 moves upward, the limit shoulder 214 hooks the rubber block 222, and the valve core member 22 is pulled up as a whole to completely open the flow channel.

[0050] The outer diameter tolerance zone of the sawtooth ring 223 is m8, the inner hole tolerance zone of the valve core groove 13 is H7, and the outer diameter of the rubber block 222 is 1~2mm smaller than the inner hole of the valve core groove 13.

[0051] like Figure 5 , 6 As shown, the valve core groove 13 and the serrated ring 223 use a transition fit in the hole-shaft fit series, and the effect of wiping the inner wall surface during the lifting process is guaranteed.

[0052] The axis of the reflow hole 14 and the axis of the inflow section 11 form an acute angle, and the flow direction in the reflow hole 14 is toward the downstream of the inflow section 11 .

[0053] like Figure 2 As shown, the inclined reflow hole 14 reduces the tendency of the incoming flow in the inlet section 11 to directly penetrate into the reflow hole 14, and allows the two fluids to mix relatively smoothly, thereby reducing the flow resistance loss.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An anti-crystallization over-current regulating valve for a high-salt wastewater treatment system, characterized in that: The regulating valve comprises a valve body (1), a valve stem assembly (2), a valve cover (3), an actuator (4), and a return pipe assembly (5). The valve body (1) has a medium flow channel therein. The valve body (1) comprises an inlet section (11) and an outlet section (12). The valve stem assembly (2) is inserted into the connection between the inlet section (11) and the outlet section (12). The valve cover (3) is fixedly connected to the valve body (1). The actuator (4) is arranged at one end of the valve cover (3) facing away from the valve body (1). The valve stem assembly (2 ) penetrates the valve cover (3), one end of the valve stem assembly (2) is located in the valve body (1), the other end of the valve stem assembly (2) is transmission-connected to the actuator (4), the actuator (4) drives the valve stem assembly (2) to move linearly, one end of the return pipe assembly (5) is connected to the side wall of the inlet section (11), and the other end of the return pipe assembly (5) is connected to the side wall of the outlet section (12), and when a medium flows through the regulating valve, the medium pressure at one end of the return pipe assembly (5) connected to the inlet section (11) is lower than that at the other end; The flow passages of the inlet section (11) and the outlet section (12) are perpendicular, the axis of the valve stem assembly (2) coincides with the axis of the outlet section (12), one end of the outlet section (12) serves as an outlet of the regulating valve, and the other end of the outlet section (12) is connected to a valve cover (3) for sealing; The reflux pipe group (5) uses the flow power of the medium in the valve body (1) as the reflux driving force of the reflux medium, and the flow channel of the inlet section (11) has a gradually contracting and expanding throat structure.

2. The anti-crystallization over-current regulating valve for a high-salinity wastewater treatment system according to claim 1 is characterized in that: The reflux pipe group (5) comprises a connecting pipe (51), a connecting block (52), and a reflux elbow (53); a connecting seat (15) is arranged on the side wall of the inlet section (11); a reflux hole (14) is arranged on the outer surface of the connecting seat (15) facing the inner wall of the inlet section (11); the connecting block (52) is mounted on the side wall of the outlet section (12); the inner wall of the connecting block (52) and the inner wall of the outlet section (12) are butted together to form a cylindrical surface; a reflux elbow (53) is arranged on one side of the connecting block (52) located in the outlet section (12); the opening of the reflux elbow (53) faces away from the outlet of the outlet section (12); one end of the connecting pipe (51) is connected to the connecting block (52); and the other end of the connecting pipe (51) is connected to the reflux hole (14).

3. The anti-crystallization over-current regulating valve for a high-salt wastewater treatment system according to claim 1, characterized in that: The inlet section (11) is tangentially connected to a side wall at one end of the outlet section (12).

4. The anti-crystallization over-current regulating valve for a high-salinity wastewater treatment system according to claim 1, characterized in that: The valve stem assembly (2) comprises a core rod (21) and a valve core member (22); the upper end of the core rod (21) is connected to an actuator (4); the lower end of the core rod (21) applies a lifting force to the valve core member (22); a valve core groove (13) is provided in the outflow section (12); the valve core groove (13) has a cylindrical side surface and a conical bottom surface; The valve core member (22) comprises a force-bearing sleeve (221), a rubber block (222), and a sawtooth ring (223); the rubber block (222) is fixed to one end of the force-bearing sleeve (221); the force-bearing sleeve (221) is transmission-connected to the core rod (21); a plurality of sawtooth rings (223) are arranged at the bottom of the rubber block (222); the sawtooth rings (223) are also made of rubber material; and the outer diameter of the sawtooth rings (223) is equal to the inner diameter of the valve core groove (13).

5. The anti-crystallization over-current regulating valve for a high-salinity wastewater treatment system according to claim 4, characterized in that: The valve stem assembly (2) further comprises a spring (23); the core rod (21) comprises a screw rod section (211), a pressure plate (212), a core shaft (213), a limiting shoulder (214), and a plug (215); the pressure plate (212) is arranged at one end of the core shaft (213), and the plug (215) is arranged at the other end; the limiting shoulder (214) is arranged at the end of the core shaft (213) close to the plug (215); the screw rod section (211) is arranged at the end of the pressure plate (212) away from the core shaft (213); the core shaft (213) passes through a force-bearing sleeve (221); a spring (23) is arranged between the force-bearing sleeve (221) and the pressure plate (212); the limiting shoulder (214) is located on the side of the rubber block (222) away from the force-bearing sleeve (221); and the upper end of the screw rod section (211) is drivingly connected to the actuator (4).

6. The anti-crystallization over-current regulating valve for a high-salinity wastewater treatment system according to claim 4, characterized in that: The outer diameter tolerance zone of the sawtooth ring (223) is selected as m8, the inner hole tolerance zone of the valve core groove (13) is selected as H7, and the outer diameter of the rubber block (222) is 1-2 mm smaller than the inner hole of the valve core groove (13).

7. The anti-crystallization over-current regulating valve for a high-salinity wastewater treatment system according to claim 2, characterized in that: The axis of the reflow hole (14) forms an acute angle with the axis of the inflow section (11), and the flow direction in the reflow hole (14) is toward the downstream of the inflow section (11).

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