A multi-valent salt removal reactor having a self-cleaning salt sludge discharge valve

Abstract

The application discloses a multi-valent salt removal reactor with a self-cleaning salt mud discharge valve and relates to the technical field of valves.The multi-valent salt removal reactor comprises a reaction tank and a salt mud discharge valve connected to the bottom of the reaction tank, and a cleaning device is arranged in the salt mud discharge valve.The cleaning device comprises an inner cylinder, an outer cylinder, a paddle, a cleaning assembly and an adjusting assembly.The cleaning assembly comprises a first mounting seat, a second mounting seat, a knocking plate, a connecting steel rope, a rotating shaft and a cleaning roller brush.The cleaning device is arranged in the salt mud discharge valve, the paddle is rotated to drive the whole to rotate, the vibration motor in the cleaning assembly makes the knocking plate knock the multi-valent salt crystallization and precipitation to loosen the multi-valent salt crystallization and precipitation, the loosened precipitation is cleaned by the cleaning roller brush, the inside of the salt mud discharge valve is ensured to be clean, meanwhile, the contact force of the cleaning roller brush and the inner wall of the valve is adjusted by the adjusting assembly, and the cleaning effect is ensured.The multi-valent salt crystallization and precipitation adhered to the inner wall of the valve can be continuously removed, and the service life of the salt mud discharge valve is prolonged.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a multivalent salt removal reactor with a self-cleaning salt mud discharge valve. Background Technology

[0002] In the field of landfill leachate treatment, the combined process of "biochemical treatment + MBR (membrane bioreactor) + advanced membrane treatment" has become the mainstream treatment method. Advanced membrane treatment plays a crucial role in landfill leachate treatment due to its high-efficiency separation characteristics. However, while achieving efficient separation, this process inevitably generates a large amount of membrane concentrate. Membrane concentrate is extremely difficult to treat, mainly due to its complex composition, containing high concentrations of recalcitrant organic matter and salts, especially polyvalent salts. In the material separation and desalination system, to further increase the concentration ratio, the concentrated brine with extremely low organic matter content after organic matter separation needs to undergo advanced desalination treatment to promote the crystallization and precipitation of polyvalent salts, thereby reducing the salt content in the material circulation system.

[0003] The device used to achieve the above-mentioned desalination function is a multivalent salt removal reactor. The reactor typically includes an inlet pipe, a central pipe, a bell mouth for diffusion and mixing, a collision plate for changing the flow direction, an overflow weir for collecting clean water at the top and an outlet pipe, and a mud hopper and mud discharge pipe for collecting and discharging salt mud at the bottom. The salt mud discharge valve is a key control component on the mud discharge pipe, and its reliability and stability directly affect the continuous operation efficiency of the reactor.

[0004] Currently, most salt sludge discharge valves use conventional butterfly valves, ball valves, or gate valves. Because polyvalent salt crystals easily adhere to the inner wall of the valve, these valves, which lack cleaning functions, are not suitable for polyvalent salt removal reactors. During the sludge discharge process, polyvalent salt crystals generated in the reactor will adhere to and deposit on the inner wall of the valve. Initially, the attached crystals are relatively soft and can be quickly removed by physical means. Therefore, it is necessary to clean the attached crystals on the inner wall simultaneously while the salt sludge discharge valve is discharging sludge. If not cleaned in time, the soft crystals will gradually turn into sediments that are difficult to remove, which not only increases the difficulty of cleaning but also leads to a decrease in valve sealing performance and an increase in operating resistance due to the continuous adhesion and accumulation of salt sludge crystals, thereby shortening the service life of the salt sludge discharge valve. Summary of the Invention

[0005] To address the technical deficiencies in the background art, this invention proposes a multivalent salt removal reactor with a self-cleaning salt mud discharge valve. To further solve the aforementioned technical problems and meet practical needs, the specific technical solution is as follows: A multivalent salt removal reactor with a self-cleaning sludge discharge valve includes a reaction tank, an overflow weir on the inner wall of the top of the reaction tank, a central pipe inside the reaction tank, and a sludge discharge valve connected to the bottom of the reaction tank. The sludge discharge valve includes a pipe section, a valve plate inside the pipe section, a valve stem outside the pipe section and connected to the valve plate, a central rod inside the pipe section on both sides of the valve plate, and a cleaning device movably sleeved on the central rod. The cleaning device includes an inner cylinder movably sleeved on the central rod, an outer cylinder coaxially disposed outside the inner cylinder, connecting plates at both ends of the outer cylinder and connected to the ends of the inner cylinder, paddles distributed rotationally symmetrically around the outer cylinder axis on the outer wall of the outer cylinder, a plurality of cleaning components symmetrically disposed around the outer wall of the outer cylinder, and adjusting components disposed on the connecting plates and connected to the corresponding cleaning components. Limiting grooves corresponding to the cleaning components are provided on the outer walls at both ends of the outer cylinder. Connecting rods connected to the inner walls of the pipe section are vertically disposed at both ends of the central rod. Sealed mounting cavities for installing adjusting components are provided on the connecting plates.

[0006] As a further technical solution of the present invention, the cleaning assembly includes a first mounting seat and a second mounting seat disposed inside the limiting grooves on the outer walls at both ends of the outer cylinder, a mounting plate disposed inside the limiting grooves on the outer walls at both ends of the outer cylinder, a striking plate connected on one side to the first mounting seat located at both ends of the outer cylinder, a connecting steel rope for connecting the first mounting seat and the second mounting seat in the same limiting groove and symmetrically disposed at both ends of the outer cylinder, a rotating shaft connected to the connecting steel rope at both ends of the outer cylinder, and a cleaning roller brush disposed on the rotating shaft that can rotate freely.

[0007] As a further technical solution of the present invention, the adjustment assembly includes a miniature electric cylinder, a first connecting rod, and a second connecting rod disposed inside the sealed mounting cavity of the connecting plate. The two ends of the first connecting rod are respectively hinged to the first mounting base and the telescopic rod of the miniature electric cylinder. The two ends of the second connecting rod are respectively hinged to the second mounting base and the telescopic rod of the miniature electric cylinder. A ring-shaped storage battery electrically connected to the miniature electric cylinder is disposed inside the side wall of one end of the inner cylinder.

[0008] As a further technical solution of the present invention, a spring is correspondingly provided inside the limiting groove, and the two ends of the spring are respectively connected to the first mounting base and the second mounting base.

[0009] As a further technical solution of the present invention, the first mounting base and the second mounting base are respectively provided with mounting cavities inside, and the top of the first mounting base and the second mounting base are respectively provided with mounting plates. One end of the mounting plate is placed inside the mounting cavity and a vibration motor is installed and connected thereto, and the other end of the mounting plate is placed outside the mounting cavity.

[0010] As a further technical solution of the present invention, the mounting plate of the first mounting base is placed at one end outside the mounting cavity and is connected to the striking plate and the connecting steel rope respectively, and the mounting plate of the second mounting base is placed at one end outside the mounting cavity and is connected to the connecting steel rope.

[0011] As a further technical solution of the present invention, one side of the striking plate is connected to the mounting plate located in the first mounting seat at both ends of the outer cylinder, the side of the striking plate not connected to the mounting plate forms a free end, and a plurality of striking particles are provided on the outer surface of the striking plate.

[0012] The beneficial effects of this invention are as follows: By incorporating a self-cleaning salt mud discharge valve, the self-cleaning function continuously removes polyvalent salt crystal deposits adhering to the inner wall of the valve, thereby extending the valve's service life. The cleaning device rotates via a paddle, while a vibration motor in the cleaning assembly vibrates, causing a striking plate to loosen the polyvalent salt crystal deposits adhering to the inner wall of the salt mud discharge valve's pipe section through striking particles. The cleaning roller brush cleans the loosened polyvalent salt crystal deposits during rotation, ensuring the cleanliness of the inside of the salt mud discharge valve. By adjusting the distance between the first and second mounting seats within the same limit groove, the contact force between the cleaning roller brush and the inner wall of the salt mud discharge valve is adjustable, ensuring that the cleaning roller brush always remains in close contact with the inner wall of the salt mud discharge valve, thus guaranteeing the cleaning effect. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the reactor of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the salt mud discharge valve of the present invention.

[0015] Figure 3 This is a cross-sectional view of the internal structure of the salt mud discharge valve of the present invention.

[0016] Figure 4 For along Figure 3 A magnified view of a portion of point AA in the middle.

[0017] Figure 5 This is one of the structural schematic diagrams of the cleaning device of the present invention.

[0018] Figure 6 This is a second schematic diagram of the cleaning device structure of the present invention.

[0019] Figure 7 This is the third schematic diagram of the cleaning device structure of the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the central rod of the present invention.

[0021] Attached reference numerals: 1-Reaction vessel; 2-Central pipe; 3-Collision plate; 4-Overflow weir; 5-Salt mud discharge valve; 51-Pipeline section; 52-Valve plate; 53-Valve stem; 6-Central rod; 61-Connecting rod; 7-Cleaning device; 71-Inner cylinder; 711-Installation channel; 72-Outer cylinder; 721-Limiting groove; 73-Connecting plate; 731-Sealed mounting cavity; 74-Paddle; 75-Cleaning assembly; 750-Battery; 751a-First mounting base; 751b-Second mounting base; 752-Mounting plate; 753-Vibration motor; 754-Striking plate; 755-Striking particles; 756-Connecting steel rope; 757-Rotating shaft; 758-Cleaning roller brush; 759-Spring; 76-Adjustment component; 761-Miniature electric cylinder; 762-First connecting rod; 763-Second connecting rod. Detailed Implementation

[0022] like Figures 1 to 8 As shown, the present invention provides a technical solution: a multivalent salt removal reactor with a self-cleaning salt sludge discharge valve, comprising a reaction tank 1, an overflow weir 4 disposed on the top of the reaction tank 1, a central pipe 2 disposed inside the reaction tank 1, and a salt sludge discharge valve 5 connected to the bottom of the reaction tank 1. The salt sludge discharge valve 5 includes a pipe section 51, a valve plate 52 disposed inside the pipe section 51, a valve stem 53 disposed outside the pipe section 51 and connected to the valve plate 52, a central rod 6 disposed inside the pipe section 51 on both sides of the valve plate 52, and a cleaning device 7 movably sleeved on the central rod 6. The cleaning device 7 includes an inner cylinder 71 movably sleeved on the central rod 6, and a coaxially arranged... The outer cylinder 72 is placed outside the inner cylinder 71; the connecting plates 73 are set at both ends of the outer cylinder 72 and connected to the ends of the inner cylinder 71; the paddles 74 are distributed in a rotationally symmetrical manner around the axis of the outer cylinder 72 on the outer wall of the outer cylinder 72; a number of cleaning components 75 are symmetrically arranged around the outer wall of the outer cylinder 72; and the adjusting components 76 are set on the connecting plates 73 and connected to the corresponding cleaning components 75. The outer walls at both ends of the outer cylinder 72 are provided with limiting grooves 721 corresponding to the cleaning components 75. The two ends of the central rod 6 are vertically provided with connecting rods 61 connected to the pipe section 51. The connecting plate 73 is provided with a sealed mounting cavity 731 for installing the adjusting components 76. Further, in the above structure, the cleaning component 75 includes a first mounting seat 751a and a second mounting seat 751b disposed inside the limiting slide grooves 721 on the outer walls at both ends of the outer cylinder 72, a mounting plate 752 disposed inside the limiting slide grooves 721 on the outer walls at both ends of the outer cylinder 72, a striking plate 754 connected on one side to the first mounting seat 751a located at both ends of the outer cylinder 72, a connecting steel rope 756 for connecting the first mounting seat 751a and the second mounting seat 751b in the same limiting slide groove 721 and symmetrically disposed at both ends of the outer cylinder 72, a rotating shaft 757 connected to the connecting steel ropes 756 at both ends of the outer cylinder 72, and a cleaning roller brush 758 rotatably disposed on the rotating shaft 757.

[0023] It should be noted that the structure of the salt mud discharge valve 5 of the present invention should also include a controller for controlling the vibration motor 753 and the miniature electric cylinder 761 to perform corresponding actions, and the storage battery 750 supplies power to the controller, the vibration motor 753 and the miniature electric cylinder 761.

[0024] In terms of cleaning the salt mud discharge valve 5 of the present invention, the inner cylinder 71 is provided with an installation channel 711 that rotates with the central rod 6. The inner cylinder 71 is rotatably sleeved on the central rod 6 through the installation channel 711. When liquid passes through the salt mud discharge valve 5, it can drive the paddle 74 to rotate, thereby driving the entire cleaning device 7 to rotate. During the rotation, the vibration motor 753 in the cleaning component 75 generates vibration, which drives the striking plate 754 to vibrate through the mounting plate 752. The striking particles 755 provided on the outer surface of the striking plate 754 can knock the polyvalent salt crystal deposits attached to the inner wall of the pipe part 51 of the salt mud discharge valve 5, loosening them. At the same time, the rotation of the cleaning device 7 drives the cleaning roller brush 758 to rotate, further cleaning the loosened polyvalent salt crystal deposits, thereby effectively cleaning the inside of the salt mud discharge valve 5, avoiding the accumulation of polyvalent salt crystal deposits in the valve, and ensuring the normal operation and service life of the salt mud discharge valve 5.

[0025] The miniature electric cylinder 761 in the adjustment component 76 of the present invention can adjust the distance between the first mounting seat 751a and the second mounting seat 751b in the same limiting groove 721 through the hinge action of the first connecting rod 762 and the second connecting rod 763. When the distance changes, the connecting steel rope 756 will push the cleaning roller brush 758 away from the outer cylinder 72, so that the cleaning roller brush 758 can always stick to the inner wall of the pipe section 51 during the cleaning of the inner wall of the pipe section 51 of the salt mud discharge valve 5. The cleaning roller brush 758 can maintain good contact with the inner wall of the pipe section 51 through the adjustment of the adjustment component 76, thereby ensuring the cleaning effect and ensuring that the inner wall of the pipe section 51 of the salt mud discharge valve 5 is thoroughly cleaned.

[0026] The reactor of the present invention includes a reaction tank 1, an overflow weir 4 disposed on the inner wall of the top of the reaction tank 1, a central pipe 2 disposed inside the reaction tank 1, and a salt mud discharge valve 5 connected to the bottom of the reaction tank 1. The central pipe 2 is disposed in the center of the reaction tank 1, and the lower part of the central pipe 2 is provided with a bell mouth for releasing a mixture of polyvalent salt concentrated brine and crystallizing agent. A collision plate 3 is disposed below the bell mouth of the central pipe 2. The collision plate 3 is connected to the inner wall of the reaction tank 1 by a connecting rod. The flow direction of the mixture is changed by the collision reflection effect of the collision plate 3. The polyvalent salt concentrated brine and crystallizing agent are fully mixed and reacted in the reaction tank 1 to generate salt mud precipitate. An overflow weir 4 is provided on the top wall of the reaction tank 1 for collecting the treated clear water. A clear water outlet pipe is provided on the outer wall of the overflow weir 4 for discharging the clear liquid. A mud hopper is provided at the bottom of the reaction tank 1. The bottom of the mud hopper is connected to a mud discharge pipe for discharging salt mud. A salt mud discharge valve 5 is installed on the mud discharge pipe.

[0027] like Figures 4 to 7 As shown, in one of the preferred embodiments of the present invention, the adjustment assembly 76 includes a miniature electric cylinder 761, a first connecting rod 762, and a second connecting rod 763 disposed inside the sealed mounting cavity 731 of the connecting plate 73. The two ends of the first connecting rod 762 are respectively hinged to the first mounting base 751a and the telescopic rod of the miniature electric cylinder 761. The two ends of the second connecting rod 763 are respectively hinged to the second mounting base 751b and the telescopic rod of the miniature electric cylinder 761. A ring-shaped storage battery 750 electrically connected to the miniature electric cylinder 761 is disposed inside one side wall of the inner cylinder 71.

[0028] In the adjustment assembly 76, the telescopic rod of the miniature electric cylinder 761 adjusts the distance between the first mounting seat 751a and the second mounting seat 751b within the same limiting groove 721 through telescopic movement. The first connecting rod 762 and the second connecting rod 763 play the role of transmission and connection, and are respectively hinged to the telescopic rod of the miniature electric cylinder 761, the first mounting seat 751a and the second mounting seat 751b.

[0029] When the controller controls the telescopic rod of the miniature electric cylinder 761 to extend outward, since the two ends of the first connecting rod 762 are respectively hinged to the first mounting base 751a and the telescopic rod of the miniature electric cylinder 761, and the two ends of the second connecting rod 763 are respectively hinged to the second mounting base 751b and the telescopic rod of the miniature electric cylinder 761, the first connecting rod 762 and the second connecting rod 763 will push the first mounting base 751a and the second mounting base 751b away from each other in the limiting slide groove 721 as the telescopic rod extends, that is, the distance between the two increases.

[0030] Conversely, when the controller controls the telescopic rod of the micro electric cylinder 761 to retract inward, the first link 762 and the second link 763 will pull the first mounting seat 751a and the second mounting seat 751b closer to each other in the limiting slide groove 721, thereby reducing the distance between them.

[0031] Due to factors such as salt mud adhesion, the inner diameter of the pipe section 51 of the salt mud discharge valve 5 may change. By adjusting the distance between the first mounting seat 751a and the second mounting seat 751b in the same limiting groove 721 through the adjusting component 76, the curvature of the connecting steel rope 756 is changed, pushing the cleaning roller brush 758 away from or closer to the outer cylinder 72. This ensures that the cleaning roller brush 758 can always be in close contact with the inner wall of the pipe section 51 of the salt mud discharge valve 5 during the cleaning process. In this way, no matter how the inner diameter of the pipe section 51 of the salt mud discharge valve 5 changes, the cleaning roller brush 758 can maintain a good contact state, thereby ensuring the cleaning effect.

[0032] like Figures 4 to 7 As shown, in one of the preferred embodiments of the present invention, a spring 759 is correspondingly provided inside the limiting groove 721, and the two ends of the spring 759 are respectively connected to the first mounting base 751a and the second mounting base 751b.

[0033] Furthermore, in the above structure, the first mounting base 751a and the second mounting base 751b are respectively provided with mounting cavities inside, and the tops of the first mounting base 751a and the second mounting base 751b are respectively provided with mounting plates 752. One end of the mounting plate 752 is placed inside the mounting cavity and is connected to a vibration motor 753. The other end of the mounting plate 752 is placed outside the mounting cavity. The mounting plate 752 of the first mounting base 751a is connected to the striking plate 754 and the connecting steel rope 756 at the end outside the mounting cavity, and the mounting plate 752 of the second mounting base 751b is connected to the connecting steel rope 756 at the end outside the mounting cavity.

[0034] The vibration motors 753 in the cleaning assembly 75 are respectively installed at one end of the mounting plate 752 inside the mounting cavity. When the vibration motors 753 are started, they will generate vibration. Since the mounting plate 752 is installed and connected to the first mounting seat 751a (or the second mounting seat 751b), the vibration will be transmitted to the striking plate 754 through the mounting plate 752. One side of the striking plate 754 is connected to the mounting plate 752 inside the first mounting seat 751a located at both ends of the outer cylinder 72, and the side not connected to the mounting plate 752 forms a free end. This allows the striking plate 754 to produce a relatively obvious vibration effect under the action of vibration. Several striking particles 755 are provided on the outer surface of the striking plate 754. During the vibration of the striking plate 754, the striking particles 755 will knock the polyvalent salt crystal precipitate attached to the inner wall of the pipe section 51 of the salt mud discharge valve 5.

[0035] Driven by the vibration motor 753, the tapping plate 754 taps the polyvalent salt crystal deposits attached to the inner wall of the pipe section 51 of the salt mud discharge valve 5 through the tapping particles 755, causing the polyvalent salt crystal deposits that were originally tightly attached to the inner wall of the pipe section 51 to loosen. This process creates favorable conditions for subsequent cleaning work, because the loosened deposits are easier to remove.

[0036] When the liquid passes through the salt mud discharge valve 5, the outer cylinder 72 of the cleaning device 7 has paddles 74 that are rotationally symmetrically distributed around the axis of the outer cylinder 72. When the liquid flows, it will push the paddles 74, thereby driving the entire cleaning device 7 to rotate. The connecting steel ropes 756 in the cleaning component 75 are connected to the rotating shafts 757 at both ends of the outer cylinder 72 respectively. The cleaning roller brush 758 is rotatably mounted on the rotating shaft 757. When the cleaning device 7 rotates, it will drive the cleaning roller brush 758 to rotate together.

[0037] Under the action of the adjusting component 76, the adjusting component 76 can adjust the distance between the first mounting seat 751a and the second mounting seat 751b in the same limiting slide groove 721, thereby causing the connecting steel rope 756 to push the cleaning roller brush 758 away from the outer cylinder 72, ensuring that the cleaning roller brush 758 is always in close contact with the inner wall of the pipe part 51 of the salt mud discharge valve 5. During the rotation, the cleaning roller brush 758 will brush the loose polyvalent salt crystal precipitate.

[0038] The cleaning roller brush 758 rotates under the drive of the cleaning device 7 and always stays in close contact with the inner wall of the pipe section 51 of the salt mud discharge valve 5. It can further clean the loosened polyvalent salt crystal deposits after being struck by the striking plate 754, and brush the deposits off the inner wall of the pipe section 51. At the same time, the vibration generated by the vibration motor 753 is also transmitted to the cleaning roller brush 758 through the mounting plate 752 and the connecting steel rope 756, thereby further increasing the cleaning ability of the cleaning roller brush 758. Through the combination of vibration and rotating brushing, the inside of the salt mud discharge valve 5 is effectively cleaned, and the accumulation of polyvalent salt crystal deposits in the valve is prevented.

[0039] When the micro electric cylinder 761 in the adjusting assembly 76 adjusts the distance between the first mounting base 751a and the second mounting base 751b via the first connecting rod 762 and the second connecting rod 763, the spring 759 can play an auxiliary adjustment role, making the adjustment of the distance more stable. At the same time, when the micro electric cylinder 761 stops working or reverses its action, the spring 759 can help the first mounting base 751a and the second mounting base 751b return to their initial position or close to their initial position by means of its elastic restoring force, realizing the reset function. In addition, the connecting effect of the spring 759 can enhance the structural stability between the first mounting base 751a and the second mounting base 751b, preventing them from shaking or shifting unnecessarily when the cleaning device 7 rotates or is subjected to other external forces, thereby ensuring the normal operation of the cleaning assembly 75.

[0040] like Figures 5 to 7 As shown, in one of the preferred embodiments of the present invention, one side of the striking plate 754 is connected to the mounting plate 752 located in the first mounting seat 751a at both ends of the outer cylinder 72, the side of the striking plate 754 not connected to the mounting plate 752 forms a free end, and a plurality of striking particles 755 are provided on the outer surface of the striking plate 754.

[0041] When the liquid passes through the salt mud discharge valve 5, it will push the paddle 74 on the cleaning device 7 to rotate, thereby driving the entire cleaning device 7 to rotate. Since one side of the striking plate 754 is connected to the mounting plate 752 located in the first mounting seat 751a at both ends of the outer cylinder 72, the striking plate 754 will make a circular motion during the rotation of the cleaning device 7. The striking plate 754 that is making a circular motion tends to move away from the center. When the striking plate 754 rotates, the free end of the side of the striking plate 754 that is not connected to the mounting plate 752 will be subjected to centrifugal force. This centrifugal force will cause the free end of the striking plate 754 to tend to expand outward, so that it always sticks tightly to the inner wall of the pipe section 51 of the salt mud discharge valve 5.

[0042] The vibration motor 753 is mounted on the mounting plate 752 at the top of the first mounting base 751a and the second mounting base 751b, which is located inside the mounting cavity. When the vibration motor 753 is started, it will generate vibration. The vibration is transmitted to the striking plate 754 through the mounting plate 752. Since the free end of the striking plate 754 is in close contact with the inner wall of the pipe section 51 of the salt mud discharge valve 5 under the action of centrifugal force, the vibration generated by the vibration motor 753 will cause the striking plate 754 to vibrate at a certain frequency and amplitude. At this time, the several striking particles 755 set on the outer surface of the striking plate 754 will strike the polyvalent salt crystal precipitate attached to the inner wall of the pipe section 51 of the salt mud discharge valve 5 with greater force. Compared with the case where there is no centrifugal force and the striking plate 754 is in close contact with the inner wall of the pipe section 51, the striking force is stronger at this time, which can more effectively destroy the adhesion between the polyvalent salt crystal precipitate and the inner wall of the pipe section 51, making the precipitate easier to loosen.

[0043] Centrifugal force causes the striking plate 754 to adhere tightly to the inner wall of the pipe section 51, while the vibration motor 753 provides vibration power. The two work together to enable the striking particles 755 to continuously and efficiently strike the polyvalent salt crystals and precipitates. During the continuous rotation of the cleaning device 7, the striking plate 754 can quickly strike the precipitates on the inner wall of the pipe section 51 multiple times, shortening the time required to loosen the precipitates and improving cleaning efficiency. Compared with the cleaning method of simply using the cleaning roller brush 758, the cleaning work of the inner wall of the pipe section 51 of the salt mud discharge valve 5 can be completed in a shorter time.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multivalent salt removal reactor with a self-cleaning salt mud discharge valve, comprising a reaction tank (1), an overflow weir (4) disposed on the inner wall of the top of the reaction tank (1), a central pipe (2) disposed inside the reaction tank (1), and a salt mud discharge valve (5) connected to the bottom of the reaction tank (1), characterized in that: The salt mud discharge valve (5) includes a pipe section (51), a valve plate (52) disposed inside the pipe section (51), a valve stem (53) disposed outside the pipe section (51) and connected to the valve plate (52), a central rod (6) disposed on both sides of the valve plate (52) inside the pipe section (51), and a cleaning device (7) movably sleeved on the central rod (6). The cleaning device (7) includes an inner cylinder (71) movably sleeved on the central rod (6), an outer cylinder (72) coaxially disposed outside the inner cylinder (71), a connecting plate (73) disposed at both ends of the outer cylinder (72) and connected to the ends of the inner cylinder (71), and a connecting plate (73) on the outer cylinder. (72) A blade (74) is distributed in a rotationally symmetrical manner around the axis of the outer cylinder (72) on the outer wall; a number of cleaning components (75) are symmetrically arranged around the outer wall of the outer cylinder (72); an adjustment component (76) is arranged on the connecting plate (73) and connected to the corresponding cleaning component (75); a limiting groove (721) corresponding to the cleaning component (75) is provided on the outer wall at both ends of the outer cylinder (72); a connecting rod (61) connected to the inner wall of the pipe section (51) is vertically arranged at both ends of the central rod (6); and a sealed mounting cavity (731) for installing the adjustment component (76) is provided on the connecting plate (73). The cleaning assembly (75) includes a first mounting seat (751a) and a second mounting seat (751b) disposed inside the limiting slide groove (721) on the outer walls at both ends of the outer cylinder (72), a mounting plate (752) disposed inside the limiting slide groove (721) on the outer walls at both ends of the outer cylinder (72), a striking plate (754) connected on one side to the first mounting seat (751a) located at both ends of the outer cylinder (72), a connecting steel rope (756) for connecting the first mounting seat (751a) and the second mounting seat (751b) in the same limiting slide groove (721) and symmetrically disposed at both ends of the outer cylinder (72), a rotating shaft (757) connected to the connecting steel rope (756) at both ends of the outer cylinder (72), and a cleaning roller brush (758) disposed on the rotating shaft (757) that can rotate freely. The side edge of the striking plate (754) is connected to the mounting plate (752) inside the first mounting base (751a) located at both ends of the outer cylinder (72). The side of the striking plate (754) not connected to the mounting plate (752) forms a free end. A plurality of striking particles (755) are provided on the outer surface of the striking plate (754). The adjustment assembly (76) includes a miniature electric cylinder (761), a first connecting rod (762), and a second connecting rod (763) disposed inside the sealed mounting cavity (731) of the connecting plate (73). The two ends of the first connecting rod (762) are respectively hinged to the telescopic rod of the first mounting base (751a) and the miniature electric cylinder (761). The two ends of the second connecting rod (763) are respectively hinged to the telescopic rod of the second mounting base (751b) and the miniature electric cylinder (761). A ring-shaped battery (750) electrically connected to the miniature electric cylinder (761) is disposed inside one side wall of the inner cylinder (71).

2. The multivalent salt removal reactor with a self-cleaning salt mud discharge valve according to claim 1, characterized in that: A spring (759) is correspondingly provided inside the limiting slide groove (721), and the two ends of the spring (759) are respectively connected to the first mounting base (751a) and the second mounting base (751b).

3. A multivalent salt removal reactor with a self-cleaning salt mud discharge valve according to claim 2, characterized in that: The first mounting base (751a) and the second mounting base (751b) are respectively provided with mounting cavities inside. The top of the first mounting base (751a) and the second mounting base (751b) are respectively provided with mounting plates (752). One end of the mounting plate (752) is placed inside the mounting cavity and a vibration motor (753) is installed and connected thereto. The other end of the mounting plate (752) is placed outside the mounting cavity.

4. A multivalent salt removal reactor with a self-cleaning salt mud discharge valve according to claim 3, characterized in that: The mounting plate (752) of the first mounting base (751a) is located outside the mounting cavity and is connected to the striking plate (754) and the connecting steel rope (756) respectively. The mounting plate (752) of the second mounting base (751b) is located outside the mounting cavity and is connected to the connecting steel rope (756).

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