Multivalent salt removal reactor with self-cleaning salty mud discharge valve

Abstract

The invention discloses a multivalent salt removal reactor with a self-cleaning salty mud discharge valve, and relates to the technical field of valves, the multivalent salt removal reactor structurally comprises a reaction tank and the salty mud discharge valve connected to the bottom of the reaction tank, a cleaning device is arranged in the salty mud discharge valve, and the cleaning device comprises an inner cylinder, an outer cylinder, paddles, 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 rolling brush, the cleaning device is arranged in the salty mud discharge valve, the whole salty mud discharge valve is driven to rotate through rotation of the paddles, and a vibration motor in the cleaning assembly enables the knocking plate to knock multivalent salt crystal precipitates to loosen the multivalent salt crystal precipitates; the cleaning rolling brush cleans loose sediments to ensure that the interior of the salty mud discharge valve is clean, meanwhile, the contact strength between the cleaning rolling brush and the inner wall of the valve is adjusted through the adjusting assembly, the cleaning effect is ensured, multivalent salt crystal sediments attached to the inner wall of the valve can be continuously removed, and the service life of the salty mud discharge valve is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a multivalent salt removal reactor with a self-cleaning salt mud discharge valve. Background Art

[0002] In the field of landfill leachate treatment, the combined process of "biochemical + MBR (membrane bioreactor) + deep membrane treatment" has become the mainstream treatment method. Deep membrane treatment plays a key role in landfill leachate treatment due to its efficient separation characteristics. However, while achieving efficient separation, this process inevitably produces a large amount of membrane concentrate. Membrane concentrate is extremely difficult to treat, mainly due to its complex composition, containing high concentrations of difficult-to-degrade organic matter and salts, especially polyvalent salts. In material separation and desalination systems, to further increase the concentration factor, the concentrated brine with extremely low organic content after organic matter separation must be subjected to deep 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, which usually 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 and an outlet pipe for collecting clean water at the top, 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] At present, salt mud discharge valves mostly use conventional butterfly valves, ball valves or gate valves. Since polyvalent salt crystals easily adhere to the inner wall of the valve, these valves without cleaning function are not suitable for polyvalent salt removal reactors. During the mud discharge process, polyvalent salt crystals generated in the reactor will adhere to and deposit on the inner wall of the valve. The texture of the attached crystals in the initial stage is relatively soft and can be quickly removed by physical means. Therefore, the crystals attached to the inner wall need to be cleaned simultaneously with the mud discharge valve. If not cleaned in time, the soft crystals will gradually turn into deposits that are difficult to remove, which not only increases the difficulty of cleaning, but also causes the valve sealing performance to decline and the operating resistance to increase due to the continuous adhesion and accumulation of salt mud crystals, thereby shortening the service life of the salt mud discharge valve. Summary of the Invention

[0005] In response to the technical defects in the background technology, the present invention proposes a polyvalent salt removal reactor with a self-cleaning salt sludge discharge valve. In order to further solve the above technical problems and meet actual needs, the specific technical solution is as follows: A polyvalent salt removal reactor with a self-cleaning salt mud discharge valve comprises a reaction tank, an overflow weir arranged on the inner wall of the top of the reaction tank, a central pipe arranged inside the reaction tank, and a salt mud discharge valve connected to the bottom of the reaction tank, the salt mud discharge valve comprising a pipeline portion, a valve plate arranged inside the pipeline portion, a valve stem arranged outside the pipeline portion and connected to the valve plate, a central rod arranged inside the pipeline portion on both sides of the valve plate, and a cleaning device movably sleeved on the central rod, the cleaning device comprising an inner cylinder movably sleeved on the central rod, an outer cylinder coaxially arranged outside the inner cylinder, a connecting plate arranged at both ends of the outer cylinder and connected to the end of the inner cylinder, blades rotationally symmetrically distributed around the axis of the outer cylinder on the outer wall of the outer cylinder, a plurality of cleaning components symmetrically arranged around the outer wall of the outer cylinder, and an adjusting component arranged on the connecting plate and connected to the corresponding cleaning component, the outer walls of the two ends of the outer cylinder are provided with limiting sliding grooves corresponding to the cleaning components, connecting rods connected to the inner wall of the pipeline portion are vertically provided at both ends of the center rod, and a sealed mounting cavity for installing the adjusting component is provided on the connecting plate.

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

[0007] As a further technical solution of the present invention, the adjustment assembly includes a micro-electric cylinder, a first connecting rod, and a second connecting rod arranged inside the sealed mounting cavity of the connecting plate. The two ends of the first connecting rod are respectively hinged to the first mounting seat and the telescopic rod of the micro-electric cylinder, and the two ends of the second connecting rod are respectively hinged to the second mounting seat and the telescopic rod of the micro-electric cylinder. A ring-shaped battery electrically connected to the micro-electric cylinder is arranged 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 sliding groove, and both ends of the spring are respectively connected to the first mounting seat and the second mounting seat.

[0009] As a further technical solution of the present invention, mounting cavities are correspondingly provided inside the first mounting seat and the second mounting seat, and mounting plates are correspondingly provided on the top of the first mounting seat and the second mounting seat, one end of the mounting plate is placed inside the mounting cavity and is installed and connected to a vibration motor, 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 seat is placed outside the mounting cavity and connected to the knocking plate and the connecting steel rope at one end, and the mounting plate of the second mounting seat is placed outside the mounting cavity and connected to the connecting steel rope at one end.

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

[0012] The beneficial effects of the present invention are: By setting a salt mud discharge valve with a self-cleaning function, the self-cleaning function can continuously remove the polyvalent salt crystal deposits attached to the inner wall of the valve, thereby extending the service life of the valve. The cleaning device drives the overall rotation through the rotation of the paddle, and at the same time the vibration motor in the cleaning component generates vibration, so that the knocking plate knocks the polyvalent salt crystal deposits attached to the inner wall of the salt mud discharge valve pipeline by knocking particles and loosens them. 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 mounting seat and the second mounting seat in the same limit slide groove, the contact force between the cleaning roller brush and the inner wall of the salt mud discharge valve can be adjusted, and the cleaning roller brush can always stick to the inner wall of the salt mud discharge valve, thereby ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 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 the Figure 3 A partial enlarged schematic diagram of the AA point 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 the second structural schematic diagram of the cleaning device of the present invention.

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

[0020] Figure 8 It is a structural schematic diagram of the center rod of the present invention.

[0021] Reference numerals: 1-reaction tank; 2-center tube; 3-collision plate; 4-overflow weir; 5-salt mud discharge valve; 51-pipeline portion; 52-valve plate; 53-valve stem; 6-center rod; 61-connecting rod; 7 - Cleaning device; 71 - Inner cylinder; 711 - Mounting channel; 72 - Outer cylinder; 721 - Limiting slide; 73 - Connecting plate; 731 - Sealed mounting chamber; 74 - Paddle; 75 - Cleaning assembly; 750 - Battery; 751a - First mounting seat; 751b - Second mounting seat; 752 - Mounting plate; 753 - Vibration motor; 754 - Knocking plate; 755 - Knocking particles; 756 - Connecting steel rope; 757 - Rotating shaft; 758 - Cleaning roller brush; 759 - Spring; 76-adjustment component; 761-micro electric cylinder; 762-first connecting rod; 763-second connecting rod. DETAILED DESCRIPTION

[0022] like Figures 1 to 8 As shown, the present invention provides a technical solution: a polyvalent salt removal reactor with a self-cleaning salt mud discharge valve, comprising a reaction tank 1, an overflow weir 4 arranged on the top of the reaction tank 1, a central pipe 2 arranged inside the reaction tank 1, and a salt mud discharge valve 5 connected to the bottom of the reaction tank 1, wherein the salt mud discharge valve 5 comprises a pipeline portion 51, a valve plate 52 arranged inside the pipeline portion 51, a valve stem 53 arranged outside the pipeline portion 51 and connected to the valve plate 52, a central rod 6 arranged inside the pipeline portion 51 on both sides of the valve plate 52, and a cleaning device 7 movably sleeved on the central rod 6, wherein the cleaning device 7 comprises an inner cylinder 71 movably sleeved on the central rod 6, a coaxially arranged An outer cylinder 72 is disposed outside the inner cylinder 71; connecting plates 73 are provided at both ends of the outer cylinder 72 and connected to the ends of the inner cylinder 71; paddles 74 are rotationally symmetrically distributed around the axis of the outer cylinder 72 on the outer wall of the outer cylinder 72; a plurality of cleaning components 75 are symmetrically arranged around the outer wall of the outer cylinder 72; and an adjustment component 76 is provided on the connecting plate 73 and connected to the corresponding cleaning components 75. Limiting grooves 721 corresponding to the cleaning components 75 are provided on the outer walls of both ends of the outer cylinder 72. Connecting rods 61 connected to the pipeline portion 51 are perpendicularly provided at both ends of the center rod 6. A sealed installation cavity 731 for installing the adjustment component 76 is provided on the connecting plate 73. Furthermore, in the above structure, the cleaning component 75 includes a first mounting seat 751a and a second mounting seat 751b arranged inside the limiting slide groove 721 on the outer walls at both ends of the outer cylinder 72, a mounting plate 752 in the limiting slide groove 721 on the outer walls at both ends of the outer cylinder 72, a knocking plate 754 connected to the first mounting seat 751a located at both ends of the outer cylinder 72 on one side, 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 arranged 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 that can rotate freely 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 micro electric cylinder 761 to perform corresponding actions, and the battery 750 supplies power to the controller, the vibration motor 753 and the micro electric cylinder 761.

[0024] With regard to the cleaning of the salt mud discharge valve 5 of the present invention, an installation channel 711 is provided inside the inner cylinder 71 for rotating with the center rod 6. The inner cylinder 71 is rotatably connected to the center rod 6 through the installation channel 711. When the liquid passes through the salt mud discharge valve 5, it can push 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, and drives the knocking plate 754 to vibrate through the mounting plate 752. The knocking particles 755 provided on the outer surface of the knocking plate 754 can knock the polyvalent salt crystal precipitate attached to the inner wall of the pipeline portion 51 of the salt mud discharge valve 5 to loosen it. At the same time, the cleaning device 7 rotates and drives the cleaning roller brush 758 to rotate, further cleaning the loosened polyvalent salt crystal precipitate, thereby effectively cleaning the inside of the salt mud discharge valve 5, avoiding the accumulation of polyvalent salt crystal precipitate in the valve, and ensuring the normal operation and service life of the salt mud discharge valve 5.

[0025] The micro-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 slide groove 721 through the hinged 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 be close to the inner wall of the pipeline portion 51 during the process of cleaning the inner wall of the pipeline portion 51 of the salt mud discharge valve 5. The cleaning roller brush 758 can maintain good contact with the inner wall of the pipeline portion 51 through the adjustment of the adjustment component 76, thereby ensuring the cleaning effect and ensuring that the inner wall of the pipeline portion 51 of the salt mud discharge valve 5 is fully cleaned.

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

[0027] like Figures 4 to 7 As shown, as one of the preferred embodiments of the present invention, the adjustment component 76 includes a micro-electric cylinder 761, a first connecting rod 762, and a second connecting rod 763 arranged 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 seat 751a and the telescopic rod of the micro-electric cylinder 761, the two ends of the second connecting rod 763 are respectively hinged to the second mounting seat 751b and the telescopic rod of the micro-electric cylinder 761, and a ring-shaped battery 750 electrically connected to the micro-electric cylinder 761 is arranged inside the side wall of one end of the inner cylinder 71.

[0028] In the adjustment component 76, the telescopic rod of the micro electric cylinder 761 realizes the distance adjustment between the first mounting seat 751a and the second mounting seat 751b in the same limiting slide 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 micro electric cylinder 761, the first mounting seat 751a and the second mounting seat 751b.

[0029] When the controller controls the telescopic rod of the micro electric cylinder 761 to extend outward, since the two ends of the first connecting rod 762 are respectively hinged to the first mounting seat 751a and the telescopic rod of the micro electric cylinder 761, and the two ends of the second connecting rod 763 are respectively hinged to the second mounting seat 751b and the telescopic rod of the micro electric cylinder 761, the first connecting rod 762 and the second connecting rod 763 will push the first mounting seat 751a and the second mounting seat 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] On the contrary, when the controller controls the telescopic rod of the micro electric cylinder 761 to retract inward, the first connecting rod 762 and the second connecting rod 763 will pull the first mounting seat 751a and the second mounting seat 751b in reverse to move closer to each other in the limiting slide groove 721, thereby reducing the distance between the two.

[0031] Due to factors such as salt mud adhesion, the inner wall diameter of the pipe portion 51 of the salt mud discharge valve 5 may change. The spacing between the first mounting seat 751a and the second mounting seat 751b in the same limiting slide groove 721 is adjusted by adjusting the adjustment component 76, thereby changing the bending radius of the connecting steel rope 756, pushing the cleaning roller brush 758 away from or close to the outer cylinder 72, ensuring that the cleaning roller brush 758 can always stick to the inner wall of the pipe portion 51 of the salt mud discharge valve 5 during the process of cleaning the inner wall of the pipe portion 51 of the salt mud discharge valve 5. In this way, no matter how the inner wall diameter of the pipe portion 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 FIG. 7 , as one of the preferred embodiments of the present invention, a spring 759 is correspondingly provided inside the limiting sliding groove 721 , and both ends of the spring 759 are respectively connected to the first mounting seat 751 a and the second mounting seat 751 b .

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

[0034] The vibration motors 753 in the cleaning assembly 75 are respectively installed on one end of the mounting plate 752 placed inside the mounting cavity. When the vibration motor 753 is started, vibration will be generated. 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 knocking plate 754 through the mounting plate 752. The side edge of one side of the knocking plate 754 is connected to the mounting plate 752 in 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, which enables the knocking plate 754 to produce a more obvious vibration effect under the action of vibration. A number of knocking particles 755 are provided on the outer surface of the knocking plate 754. During the vibration process of the knocking plate 754, the knocking particles 755 will knock on the multivalent salt crystal precipitation attached to the inner wall of the pipeline portion 51 of the salt mud discharge valve 5.

[0035] Driven by the vibration motor 753, the knocking plate 754 knocks the multivalent salt crystal precipitates attached to the inner wall of the pipe part 51 of the salt mud discharge valve 5 by knocking the particles 755, so that the multivalent salt crystal precipitates originally tightly attached to the inner wall of the pipe part 51 are loosened. This process creates favorable conditions for subsequent cleaning work because the loosened precipitates are easier to remove.

[0036] When the liquid passes through the salt mud discharge valve 5, the outer wall of the outer cylinder 72 of the cleaning device 7 is provided with paddles 74 distributed in rotational symmetry around the axis of the outer cylinder 72. When the liquid flows, the paddles 74 are pushed, thereby driving the entire cleaning device 7 to rotate. The connecting steel ropes 756 in the cleaning assembly 75 are respectively connected to the rotating shafts 757 at both ends of the outer cylinder 72, and the cleaning roller brush 758 is freely rotatably arranged on the rotating shaft 757. When the cleaning device 7 rotates, the cleaning roller brush 758 is driven to rotate together.

[0037] Under the action of the adjustment component 76, the adjustment 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, so that the connecting steel rope 756 pushes the cleaning roller brush 758 away from the outer cylinder 72, ensuring that the cleaning roller brush 758 is always close to the inner wall of the pipe part 51 of the salt mud discharge valve 5. The cleaning roller brush 758 will brush the loose multivalent salt crystal precipitates during the rotation process.

[0038] The cleaning roller brush 758 rotates under the drive of the cleaning device 7 and always sticks to the inner wall of the pipe part 51 of the salt mud discharge valve 5. It can further clean the loosened polyvalent salt crystal precipitates after being knocked by the knocking plate 754, and brush the precipitates off the inner wall of the pipe part 51. At the same time, the vibration generated by the vibration motor 753 will also be 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 the above-mentioned vibration knocking and rotary brushing, the interior of the salt mud discharge valve 5 is effectively cleaned, and the accumulation of polyvalent salt crystal precipitates in the valve is avoided.

[0039] When the micro-electric cylinder 761 in the adjustment component 76 adjusts the distance between the first mounting seat 751a and the second mounting seat 751b through 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 smoother. At the same time, when the micro-electric cylinder 761 stops working or reverses, the spring 759 can rely on its elastic restoring force to help the first mounting seat 751a and the second mounting seat 751b return to the initial position or close to the initial position, thereby realizing the reset function. In addition, the connecting function of the spring 759 can enhance the structural stability between the first mounting seat 751a and the second mounting seat 751b, preventing them from unnecessary shaking or displacement when the cleaning device 7 rotates or is subjected to other external forces, thereby ensuring the normal operation of the cleaning component 75.

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

[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, and then drive the entire cleaning device 7 to rotate. Since one side edge of the knocking plate 754 is connected to the mounting plate 752 in the first mounting seat 751a at both ends of the outer cylinder 72, during the rotation of the cleaning device 7, the knocking plate 754 will perform a circular motion. The knocking plate 754 performing a circular motion tends to move away from the center of the circle. When the knocking plate 754 rotates, the free end of the side that is not connected to the mounting plate 752 will be affected by centrifugal force. The centrifugal force will cause the free end of the knocking plate 754 to have a tendency to expand outward, so that it always sticks to the inner wall of the pipe portion 51 of the salt mud discharge valve 5.

[0042] The vibration motor 753 is installed on the mounting plate 752 on the top of the first mounting seat 751a and the second mounting seat 751b and is placed at one end inside the mounting cavity. When the vibration motor 753 is started, vibration will be generated, and the vibration will be transmitted to the knocking plate 754 through the mounting plate 752. Since the free end of the knocking plate 754 is close to the inner wall of the pipe part 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 knocking plate 754 to vibrate at a certain frequency and amplitude. At this time, the several knocking particles 755 arranged on the outer surface of the knocking plate 754 will knock the polyvalent salt crystal precipitate attached to the inner wall of the pipe part 51 of the salt mud discharge valve 5 with greater force. Compared with the case where there is no centrifugal force that makes the knocking plate 754 close to the inner wall of the pipe part 51, the knocking force at this time is stronger, which can more effectively destroy the adhesion between the polyvalent salt crystal precipitate and the inner wall of the pipe part 51, making the precipitate easier to loosen.

[0043] The knocking plate 754 is pressed against the inner wall of the pipe portion 51 by centrifugal force, and the vibration motor 753 provides vibration power. The two cooperate with each other so that the knocking particles 755 can continuously and efficiently knock on the multivalent salt crystal precipitate. During the continuous rotation of the cleaning device 7, the knocking plate 754 can quickly knock on the precipitate on the inner wall of the pipe portion 51 multiple times, shortening the time required to loosen the precipitate and improving the 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 portion 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 pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A polyvalent salt removal reactor with a self-cleaning salt sludge discharge valve, comprising a reaction tank (1), an overflow weir (4) arranged on the inner wall of the top of the reaction tank (1), a central tube (2) arranged inside the reaction tank (1), and a salt sludge discharge valve (5) connected to the bottom of the reaction tank (1), characterized in that: The salt mud discharge valve (5) comprises a pipeline portion (51), a valve plate (52) arranged inside the pipeline portion (51), a valve stem (53) arranged outside the pipeline portion (51) and connected to the valve plate (52), a center rod (6) arranged inside the pipeline portion (51) on both sides of the valve plate (52), and a cleaning device (7) movably sleeved on the center rod (6), wherein the cleaning device (7) comprises an inner cylinder (71) movably sleeved on the center rod (6), an outer cylinder (72) coaxially arranged outside the inner cylinder (71), connecting plates (73) arranged at both ends of the outer cylinder (72) and connected to the end of the inner cylinder (71), and a cleaning device (7) on the outer cylinder. The outer wall of the outer cylinder (72) is provided with blades (74) which are rotationally symmetrically distributed around the axis of the outer cylinder (72), a plurality of cleaning components (75) which are symmetrically arranged around the outer wall of the outer cylinder (72), and an adjustment component (76) which is arranged on the connecting plate (73) and connected to the corresponding cleaning component (75). The outer walls of both ends of the outer cylinder (72) are provided with limiting grooves (721) corresponding to the cleaning components (75). The two ends of the center rod (6) are vertically provided with connecting rods (61) which are connected to the inner wall of the pipeline part (51). The connecting plate (73) is provided with a sealed installation cavity (731) for installing the adjustment component (76).

2. The multivalent salt removal reactor with a self-cleaning salt sludge discharge valve according to claim 1, characterized in that: The cleaning assembly (75) comprises a first mounting seat (751a) and a second mounting seat (751b) arranged inside the limiting sliding groove (721) on the outer walls at both ends of the outer cylinder (72), a mounting plate (752) inside the limiting sliding groove (721) on the outer walls at both ends of the outer cylinder (72), a knocking plate (754) connected to the first mounting seat (751a) located at both ends of the outer cylinder (72) on one side, a connecting steel rope (756) for connecting the first mounting seat (751a) and the second mounting seat (751b) in the same limiting sliding groove (721) and symmetrically arranged 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) rotatable on the rotating shaft (757).

3. The multivalent salt removal reactor with a self-cleaning salt sludge discharge valve according to claim 1, characterized in that: The adjustment assembly (76) comprises a micro-electric cylinder (761), a first connecting rod (762), and a second connecting rod (763) arranged 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 seat (751a) and the telescopic rod of the micro-electric cylinder (761); the two ends of the second connecting rod (763) are respectively hinged to the second mounting seat (751b) and the telescopic rod of the micro-electric cylinder (761); and a ring-shaped battery (750) electrically connected to the micro-electric cylinder (761) is provided inside the side wall of one end of the inner cylinder (71).

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

5. The multivalent salt removal reactor with a self-cleaning salt sludge discharge valve according to claim 4, characterized in that: Mounting cavities are correspondingly provided inside the first mounting seat (751a) and the second mounting seat (751b), and mounting plates (752) are correspondingly provided on the tops of the first mounting seat (751a) and the second mounting seat (751b), one end of the mounting plate (752) is placed inside the mounting cavity and is connected to a vibration motor (753), and the other end of the mounting plate (752) is placed outside the mounting cavity.

6. The multivalent salt removal reactor with a self-cleaning salt sludge discharge valve according to claim 5, characterized in that: The mounting plate (752) of the first mounting seat (751a) is placed outside the mounting cavity at one end and is connected to the knocking plate (754) and the connecting steel rope (756), respectively. The mounting plate (752) of the second mounting seat (751b) is placed outside the mounting cavity at one end and is connected to the connecting steel rope (756).

7. The multivalent salt removal reactor with a self-cleaning salt sludge discharge valve according to claim 2, characterized in that: The side edge of one side of the knocking 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 knocking plate (754) not connected to the mounting plate (752) forms a free end; and a plurality of knocking particles (755) are provided on the outer surface of the knocking plate (754).

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