Environment-friendly solid-liquid separation device based on crystallization, granulation and softening

Abstract

The invention relates to the technical field of hard water softening, and discloses an environment-friendly solid-liquid separation device based on crystallization granulation softening, which comprises a bottom plate, the inner wall of the bottom plate is provided with a main water inlet pipe, the upper surface of the bottom plate is fixedly provided with a PAM adding box and a PAC adding box, and the upper surface of the bottom plate is fixedly provided with a plurality of groups of softening assemblies and solid-liquid separation assemblies respectively. An acid adding box and an alkali adding box are fixed to the upper surface of the bottom plate, a mud storage pool is formed in the inner wall of the bottom plate, a mixing box is fixedly arranged at the output end of the mortar pump, the lower surface of the mixing box is fixed to the upper surface of the bottom plate, and a material storage box is fixed to the upper surface of the bottom plate. Water enters the softening assembly through the main water inlet pipe, the material storage box is matched with the mixing box and the mortar pump to put seed crystals into the solid-liquid separation assembly and the softening assembly, mud and floccules are mixed, the technological process can be shortened while multi-stage treatment can be achieved, and the effect of improving the working efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of hard water softening technology, specifically to an environmentally friendly solid-liquid separation device based on crystallization granulation softening. Background Technology

[0002] The solid-liquid separation device used in crystallization granulation softening is a water treatment equipment that integrates crystallization granulation softening with efficient solid-liquid separation. The core is to first convert the calcium and magnesium hardness in the water into large crystal particles through crystallization granulation, and then quickly achieve solid-liquid separation through the separation unit to obtain softened clean water and discharge high-purity solid particles. It is an integrated equipment of chemical crystallization, fluidized bed granulation and solid-liquid separation. The mainstream is crystallization granulation fluidized bed. The purpose is to remove calcium and magnesium ions from the water, soften the water, and at the same time efficiently separate the generated solid particles, reduce sludge and recover crystals.

[0003] In related technologies, when performing solid-liquid separation on water softened by crystallization and granulation, separate granulation tanks, reagent dosing tanks, and seed crystal dispensing devices are required. The pipeline connections of each unit are complex, the process flow is long, the overall footprint is large, and there is a problem that the connection of multiple units can easily cause water flow dynamic loss and reduce treatment efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an environmentally friendly solid-liquid separation device based on crystallization granulation and softening. This solves the problem in related technologies where separate units are required for solid-liquid separation of water after crystallization granulation and softening, resulting in complex connections, long process flow, and reduced processing efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly solid-liquid separation device based on crystallization granulation and softening, comprising a base plate, a main water inlet pipe provided on the inner wall of the base plate, a PAM dosing tank and a PAC dosing tank fixed on the upper surface of the base plate, multiple sets of softening components and solid-liquid separation components respectively fixed on the upper surface of the base plate, an acid dosing tank and an alkali dosing tank fixed on the upper surface of the base plate, a sludge storage tank provided on the inner wall of the base plate, a slurry pump fixed on the upper surface of the base plate, a mixing tank fixed at the output end of the slurry pump, the lower surface of the mixing tank fixed to the upper surface of the base plate, and a material storage tank fixed on the upper surface of the base plate.

[0006] Preferably, the softening assembly includes a softening tank, the lower surface of which is fixed to the upper surface of a base plate. The lower inner wall of the softening tank is provided with a first reagent dosing pipe, a first drain pipe, and a first water inlet pipe. An inclined plate is fixed to the inner wall of the softening tank, and the inner wall of the inclined plate is fixed to the outer wall of the first drain pipe. The upper inner wall of the softening tank is provided with a crystal nucleus dosing pipe and a first water outlet pipe.

[0007] Preferably, the solid-liquid separation assembly includes a fluidizing tank, the lower surface of which is fixed to the upper surface of a base plate. A stirring assembly is provided on the upper inner wall of the fluidizing tank. A second water outlet pipe is provided on the inner wall of the fluidizing tank. A second reagent dosing pipe, a second sewage pipe, and a second water inlet pipe are provided on the lower inner wall of the fluidizing tank. A support plate is fixed to the inner wall of the fluidizing tank. The inner wall of the support plate is fixed to the outer wall of the second water inlet pipe. A second inner cylinder and a first inner cylinder are respectively fixed to the upper surface of the support plate. The lower sides of both the second inner cylinder and the first inner cylinder adopt an annular filter screen design.

[0008] Preferably, the stirring assembly includes a hollow column, the outer wall of which is fixed to the inner wall of the fluidizing tank, a servo motor is fixed to the upper surface of the hollow column, a rotating column is fixedly provided at the output end of the servo motor, and the outer wall of the rotating column rotates on the inner wall of the hollow column.

[0009] Preferably, the inner wall of the rotating column has a rotatable limiting post, the outer wall of the limiting post has a sliding connecting rod, the outer wall of the connecting rod slides on the inner wall of the rotating column, and a first elastic element is fixed between the bottom end of the limiting post and the inner wall of the connecting rod.

[0010] Preferably, the outer wall of the connecting rod is rotatably equipped with a stirring rod, the outer wall of the stirring rod is rotatably mounted on the inner wall of the hollow column and the rotating column, the outer wall of the stirring rod is fixed with a limit block, the outer wall of the limit block slides on the inner wall of the rotating column, the inner wall of the stirring rod is rotatably equipped with a guide column, and the outer wall of the guide column slides on the inner wall of the hollow column.

[0011] Preferably, the inner wall of the hollow column is provided with a guide groove, the outer wall of the guide column is attached to the inner wall of the guide groove, an annular plate slides on the inner wall of the hollow column, a slider is fixed on the outer wall of the annular plate, and the outer wall of the slider slides on the inner wall of the hollow column.

[0012] Preferably, the inner wall of the annular plate is provided with an annular groove, an electromagnet slides on the inner wall of the annular plate, the outer wall of the electromagnet slides on the inner wall of the annular groove, the outer wall of the electromagnet slides on the inner wall of the rotating column, and the outer wall of the electromagnet is attached to the inner wall of the stirring rod.

[0013] Preferably, the inner wall of the connecting rod has a locking block made of iron material that slides on it, and a second elastic element is fixed between the outer wall of the locking block and the inner wall of the connecting rod. The outer wall of the locking block is engaged with the inner wall of the electromagnet, and the inner wall of the electromagnet has a rectangular groove. The outer wall of the locking block is attached to the inner wall of the rectangular groove.

[0014] Preferably, a first one-way valve is provided on the inner wall of the bottom end of the connecting rod, the inner wall of the connecting rod slides on the outer wall of the second water inlet pipe, a piston rotates on the outer wall of the connecting rod, the outer wall of the piston slides on the inner wall of the first inner cylinder, and a second one-way valve is provided on the inner wall of the piston.

[0015] Working principle: Wastewater enters the softening component through the main inlet pipe for hard water softening. At this time, seed crystals are added into the storage tank and then enter the softening component through the mixing tank and slurry pump. Simultaneously, alkali is added to the softening component from the alkali addition tank. After the particles are discharged, acid is added to the softening component from the acid addition tank to adjust the pH value inside the softening component. When the water discharged from the softening component enters the solid-liquid separation component, PAC is discharged into the solid-liquid separation component, and then PAM is discharged into the solid-liquid separation component together. This can accelerate the coagulation and nucleation of flocs in the water. After the flocs have coagulated and nucleated, they will be discharged into the sludge storage tank for dewatering and sludge removal.

[0016] This invention provides an environmentally friendly solid-liquid separation device based on crystallization granulation and softening. It has the following beneficial effects: 1. This invention allows water to enter the softening component through the main inlet pipe. The storage tank, in conjunction with the mixing tank and slurry pump, adds seed crystals to the solid-liquid separation component and the softening component. The softening component, in conjunction with the acid addition tank and alkali addition tank, adjusts the pH value. The water flows into the solid-liquid separation component and, in conjunction with the PAM addition tank, PAC addition tank, acid addition tank, and alkali addition tank, mixes the sludge and flocculents. The softening component then performs crystallization and granulation softening, while the solid-liquid separation component can separate solids and liquids and remove turbidity. This multi-stage treatment shortens the process flow and improves work efficiency.

[0017] 2. This invention allows wastewater to enter through an inclined plate, and then the storage tank, mixing tank, and slurry pump discharge materials such as seed crystals, quartz sand, or activated carbon into the softening tank through the crystal nucleus dosing pipe. The acid dosing tank and alkali dosing tank discharge the reagents into the softening tank through the first reagent dosing pipe. The inner wall of the softening tank has an upward water flow, which mixes the reagents, seed crystals, and wastewater. The condensed crystals fall onto the inclined plate and are discharged through the first drain pipe. Since the equipment itself has no power source, the failure rate is reduced while maintaining the hardness removal effect.

[0018] 3. This invention allows turbid water to enter the first inner cylinder through the second inlet pipe, and then discharges the seed crystals and reagents into the first inner cylinder through the top of the fluidizing tank. At this time, the seed crystals mix with the flocculents and enter between the second and first inner cylinders. The condensed flocculents pass through the filter screen of the second inner cylinder and enter between the fluidizing tank and the first inner cylinder. The uncondensed flocculents mix with the quartz sand or activated carbon at the bottom of the fluidizing tank and are discharged through the second drain pipe. The uncondensed impurity flocculents re-enter the first inner cylinder through the second inner cylinder for condensation. This allows for multi-stage treatment and simultaneous recycling, improving the sludge removal effect.

[0019] 4. This invention uses a servo motor to drive the rotating column to rotate, while simultaneously using a limiting block to drive the stirring rod to stir. The stirring rod drives the guide column to slide within the guide groove, allowing the stirring rod to reciprocate. This improves the coagulation efficiency of wastewater or flocculent matter while preventing clumping. The annular plate, in conjunction with an electromagnet, allows the connecting rod and stirring rod to slide synchronously back and forth, causing the piston to slide synchronously on the inner wall of the first inner cylinder. This allows water to be drawn from between the first and second inner cylinders, impacting the loose flocculent matter for secondary coagulation and facilitating the removal of impurities. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the inclined plate structure of the present invention; Figure 3 This is a schematic diagram of the fluidizing plate structure of the present invention; Figure 4 This is a schematic diagram of the second inner cylinder structure of the present invention; Figure 5 This is a schematic diagram of the first inner cylinder structure of the present invention; Figure 6 This is a schematic diagram of the hollow column structure of the present invention; Figure 7 This is a schematic diagram of the piston structure of the present invention; Figure 8 This is a schematic diagram of the stirring rod structure of the present invention; Figure 9 This is a schematic diagram of the guide groove structure of the present invention; Figure 10 This is a schematic diagram of the electromagnet structure of the present invention; Figure 11 for Figure 10 Enlarged diagram of point A in the diagram.

[0021] The components include: 1. Base plate; 2. Main water inlet pipe; 3. Softening assembly; 31. Softening tank; 32. First water outlet pipe; 33. Crystal nucleus dosing pipe; 34. First reagent dosing pipe; 35. Inclined plate; 36. First water inlet pipe; 37. First sewage discharge pipe; 4. Solid-liquid separation assembly; 41. Fluidized tank; 42. Second water outlet pipe; 43. Second reagent dosing pipe; 44. Second sewage discharge pipe; 45. Second water inlet pipe; 46. Second inner cylinder; 47. First inner cylinder; 48. Support plate; 49. Stirring assembly; 4901. Hollow column; 4902. Servo motor; 4903. Rotating column; 4904. Limiting... 4905. Positioning column; 4906. Connecting rod; 4907. Stirring rod; 4908. Guide column; 4909. Limiting block; 49000. Guide groove; 4910. First elastic element; 4911. Annular plate; 4912. Electromagnet; 4913. Sliding block; 4914. Second elastic element; 4915. Locking block; 4916. Rectangular groove; 4917. First one-way valve; 4918. Second one-way valve; 4919. Piston; 5. Storage tank; 6. Mixing tank; 7. Mortar pump; 8. PAM dosing tank; 9. PAC dosing tank; 10. Acid dosing tank; 11. Alkali dosing tank; 12. Sludge storage tank. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to the appendix. Figure 1 This invention provides an environmentally friendly solid-liquid separation device based on crystallization granulation softening, including a base plate 1, a main water inlet pipe 2 provided on the inner wall of the base plate 1, a PAM dosing tank 8 and a PAC dosing tank 9 fixed on the upper surface of the base plate 1, multiple sets of softening components 3 and solid-liquid separation components 4 respectively fixed on the upper surface of the base plate 1, an acid dosing tank 10 and an alkali dosing tank 11 fixed on the upper surface of the base plate 1, a sludge storage tank 12 opened on the inner wall of the base plate 1, a slurry pump 7 fixed on the upper surface of the base plate 1, a mixing tank 6 fixed at the output end of the slurry pump 7, the lower surface of the mixing tank 6 fixed on the upper surface of the base plate 1, and a material storage tank 5 fixed on the upper surface of the base plate 1.

[0024] Specifically, when wastewater enters the bottom plate 1 through the main inlet pipe 2, it first enters the softening component 3 for hard water softening. While the softening component 3 is softening, seed crystals are added to the storage tank 5. An automatic feeding valve is installed at the bottom of the storage tank 5, allowing the storage tank 5 to automatically add seed crystals to the mixing tank 6. Quartz sand or activated carbon can also be added to the mixing tank 6. At this time, the slurry pump 7 is started to mix the materials in the mixing tank 6 and discharge them into the softening component 3. At the same time, the alkali addition tank 11 is controlled to add alkali to the softening component 3, causing the water inside the softening component 3 to undergo a chemical reaction to generate crystals. The generated crystals will adhere to the surface of the seed crystals to form particles, which facilitates the removal of impurities by the softening component 3. After the particles are discharged, the acid addition tank 10 is controlled to add acid to the softening component 3 to adjust the pH value inside the softening component 3, thereby softening the water and filtering impurities in the water. The softening component 3 will then discharge the impurities into the sludge storage tank 12 for dewatering, facilitating the removal of sludge. When the water discharged from the softening component 3 enters the solid-liquid separation component 4, the PAC dosing tank 9 discharges PAC into the solid-liquid separation component 4, allowing the PAC to adsorb flocculent matter in the water. At the same time, one of the following is added: seed crystals, quartz sand, or activated carbon, along with PAM discharged from the PAM dosing tank 8, into the solid-liquid separation component 4. This accelerates the coagulation and nucleation of flocculent matter in the water. After the flocculent matter has coagulated and nucleated, it will be discharged into the sludge storage tank 12 for dewatering and sludge removal. At this time, the acid dosing tank 10 adds acid to the solid-liquid separation component 4 to adjust the pH value before the water is discharged. This multi-stage wastewater treatment can shorten the process flow, thereby improving efficiency.

[0025] Please see the appendix Figure 1 and attached Figure 2 The softening component 3 includes a softening tank 31. The lower surface of the softening tank 31 is fixed to the upper surface of the base plate 1. The lower inner wall of the softening tank 31 is provided with a first reagent dosing pipe 34, a first drain pipe 37 and a first water inlet pipe 36. An inclined plate 35 is fixed to the inner wall of the softening tank 31. The inner wall of the inclined plate 35 is fixed to the outer wall of the first drain pipe 37. The upper inner wall of the softening tank 31 is provided with a crystal nucleus dosing pipe 33 and a first water outlet pipe 32.

[0026] Specifically, wastewater enters the softening tank 31 through the first inlet pipe 36, and rises through multiple sets of holes in the inclined plate 35. At this time, the mixing tank 6 and mortar pump 7 discharge seed crystals into the crystal nucleus addition pipe 33. Simultaneously, the alkali addition tank 11 adds alkali compounds into the softening tank 31 through the first reagent addition pipe 34, causing the seed crystals to continuously contact the wastewater and condense into nuclei that fall onto the inclined plate 35. The alkali added by the alkali addition tank 11 accelerates the crystal condensation effect. Because the inclined plate 35 is designed to tilt towards the center of the first drain pipe 37, the first drain pipe 37 can be opened periodically to discharge impurities. A drain pipe 37 is connected to the sludge storage tank 12, which can achieve a stable discharge effect. At this time, the acid dosing tank 10 adds acid to the softening tank 31 through the first reagent dosing pipe 34 to adjust the pH value, so that the water rises to the appropriate position and is discharged through the first outlet pipe 32. This structure only requires the power of the first inlet pipe 36 to discharge water, which can reduce the effect of failure. Moreover, the first outlet pipe 32, the crystal nucleus dosing pipe 33, the first reagent dosing pipe 34, the first drain pipe 37 and the first inlet pipe 36 all use one-way valves and other valves that can be automatically controlled to open and close, which can improve the automation effect.

[0027] Please see the appendix Figure 1 Appendix Figure 3 Appendix Figure 4 and attached Figure 5 The solid-liquid separation component 4 includes a fluidizing tank 41. The lower surface of the fluidizing tank 41 is fixed to the upper surface of the base plate 1. A stirring component 49 is provided on the upper inner wall of the fluidizing tank 41. A second water outlet pipe 42 is provided on the inner wall of the fluidizing tank 41. A second reagent dosing pipe 43, a second sewage pipe 44, and a second water inlet pipe 45 are provided on the lower inner wall of the fluidizing tank 41. A support plate 48 is fixed on the inner wall of the fluidizing tank 41. The inner wall of the support plate 48 is fixed to the outer wall of the second water inlet pipe 45. A second inner cylinder 46 and a first inner cylinder 47 are respectively fixed on the upper surface of the support plate 48. The lower sides of the second inner cylinder 46 and the first inner cylinder 47 are both designed with annular filter screens.

[0028] Specifically, the turbid water discharged from the softening component 3 enters the fluidizing tank 41 through the second inlet pipe 45, causing the turbid water to rise along the inner wall of the first inner cylinder 47. At this time, the seed crystal and PAC dosing box 9 are discharged into the second inner cylinder 46 through the feed port on the upper side of the fluidizing tank 41. The upper side of the second inner cylinder 46 has an arc-shaped design, and the diameter of the bottom of the arc-shaped opening is smaller than the diameter of the first inner cylinder 47. This allows the seed crystal and PAC falling onto the second inner cylinder 46 to enter the inner wall of the first inner cylinder 47 and come into contact with the turbid water. The water continuously added by the second water inlet pipe 45 causes the water inside the first inner cylinder 47 to rise and flow, so that the seed crystals and PAC are mixed with the turbid water. The stirring component 49 is rotated to speed up the mixing and break up bad clumps. Bad clumps may form large flocs due to local overdosing of reagents, uneven water mixing, and excessively high fluidization intensity. These flocs are loose and uneven in density, making them easy to break later. They may also contain unreacted reagents and micro-sand, thereby reducing utilization efficiency. At this point, quartz sand or activated carbon is added to the second reagent dosing pipe 43, and PAM is added to the second reagent dosing pipe 43 by the PAC dosing box 9. When the flocculent material floating inside the first inner cylinder 47 condenses, it will be discharged between the inner walls of the first inner cylinder 47 and the second inner cylinder 46. At this time, due to the height difference between the first inner cylinder 47 and the support plate 48, the condensed flocculent material will be mixed with the unreacted flocculent material a second time. At this time, the stirring component 49 will draw water and unreacted flocculent material between the first inner cylinder 47 and the second inner cylinder 46 through the filter screen at the bottom of the first inner cylinder 47. The stirring component 49 will be controlled again to allow some of the water carrying the flocculent material to return to the first inner cylinder 47 for condensation treatment, while some water will pass through the filter screen at the bottom of the first inner cylinder 47 to impact the deposited impurities between the first inner cylinder 47 and the second inner cylinder 46. At this time, the bad clumps can be broken up and the qualified clumps can be removed. The flocculated material is discharged through the filter screen at the bottom of the second inner cylinder 46 to the inner wall between the second inner cylinder 46 and the fluidizing tank 41, allowing qualified flocculated material to connect with the bottom of the fluidizing tank 41. The broken flocs are pushed by the rising water flow to remix with the quartz sand or activated carbon and accumulate at the bottom of the fluidizing tank 41. The unmixable flocs will re-enter the interior of the first inner cylinder 47 through the arc-shaped surface of the second inner cylinder 46 for secondary mixing. After the water rises to the appropriate position, the second outlet pipe 42 will draw out the water flow, and the second drain pipe 44 will periodically discharge the floc mixture. The annular filter screens at the bottom of the second inner cylinder 46 and the first inner cylinder 47 are different. The filter screen of the first inner cylinder 47 is to prevent the condensed flocs from entering the interior of the first inner cylinder 47, allowing only water flow and uncondensed flocs to pass through. The annular filter screen of the second inner cylinder 46 is designed to allow the condensed flocs to enter the bottom of the fluidizing tank 41.

[0029] Example 2: Please refer to the appendix. Figure 5 Appendix Figure 8 Appendix Figure 9 Appendix Figure 10 and attached Figure 11 The stirring assembly 49 includes a hollow column 4901. The outer wall of the hollow column 4901 is fixed to the inner wall of the fluidizing tank 41. A servo motor 4902 is fixed to the upper surface of the hollow column 4901. A rotating column 4903 is fixedly installed at the output end of the servo motor 4902. The outer wall of the rotating column 4903 rotates on the inner wall of the hollow column 4901. A limiting post 4904 is provided for the rotation of the inner wall of the rotating column 4903. A connecting rod 4905 slides on the outer wall of the limiting post 4904. The outer wall of the connecting rod 4905 slides on the inner wall of the rotating column 4903. A first elastic element 4910 is fixed between the bottom end of the limiting post 4904 and the inner wall of the connecting rod 4905. A stirring rod 4906 rotates on the outer wall of the connecting rod 4905. The outer walls of the stirring rod 4906 rotate on the inner walls of the hollow post 4901 and the rotating post 4903. A limiting block 4908 is fixed to the outer wall of the stirring rod 4906. The outer wall of the limiting block 4908 slides on the inner wall of the rotating post 4903. A guide post 4907 rotates on the inner wall of the stirring rod 4906. The outer wall of the guide post 4907 slides on the hollow post 4901. The inner wall of the hollow column 4901 has a guide groove 4909. The outer wall of the guide column 4907 is attached to the inner wall of the guide groove 4909. An annular plate 4911 slides on the inner wall of the hollow column 4901. A slider 4913 is fixed on the outer wall of the annular plate 4911. The outer wall of the slider 4913 slides on the inner wall of the hollow column 4901. An annular groove is formed on the inner wall of the annular plate 4911. An electromagnet 4912 slides on the inner wall of the annular plate 4911. The outer wall of the electromagnet 4912 slides on the inner wall of the annular groove. The outer wall of the iron 4912 slides on the inner wall of the rotating column 4903, the outer wall of the electromagnet 4912 is attached to the inner wall of the stirring rod 4906, and a locking block 4915 made of iron material slides on the inner wall of the connecting rod 4905. A second elastic element 4914 is fixed between the outer wall of the locking block 4915 and the inner wall of the connecting rod 4905. The outer wall of the locking block 4915 is engaged with the inner wall of the electromagnet 4912. A rectangular groove 4916 is opened on the inner wall of the electromagnet 4912, and the outer wall of the locking block 4915 is attached to the inner wall of the rectangular groove 4916.

[0030] Specifically, when it is necessary to accelerate the mixing of PAC and seed crystals with flocculents, the servo motor 4902 is activated to drive the rotating column 4903 to rotate. The rotating column 4903, in turn, drives the limiting block 4908 to rotate synchronously, while simultaneously driving the stirring rod 4906 to rotate. This allows the stirring rod 4906 to accelerate mixing while breaking up unwanted clumps. Furthermore, the stirring part of the stirring rod 4906 can be made of flexible materials or other materials. Since the rotating column 4903 rotates on the inner wall of the hollow column 4901, and the inner wall of the stirring rod 4906 is connected by a connecting rod 4905, it is possible to prevent the stirring rod 4906 from shifting. As a result, because the outer wall of the stirring rod 4906 is equipped with a guide post 4907, the stirring rod 4906 rotates, causing the guide post 4907 to slide on the inner wall of the guide groove 4909. This allows the stirring rod 4906 to rotate on the outer wall of the connecting rod 4905 while reciprocating, preventing the formation of dead corners on the inner wall of the first inner cylinder 47 that could lead to the accumulation of clumps of flocculent material. The stirring rod 4906 rotates while the rotating column 4903 slides on the inner wall of the rotating column 4903. When synchronous sliding of the stirring rod 4906 is required, the electromagnet 4912 is activated. When energized, the electromagnet 4912 is installed on the inner wall of the stirring rod 4906, causing the locking block 4915 installed on the inner wall of the connecting rod 4905 to be attracted by the electromagnet 4912. This causes the locking block 4915 to lock the rectangular groove 4916, allowing the connecting rod 4905 to connect to the rotating column 4903 through the locking block 4915 and the electromagnet 4912. At this time, when the stirring rod 4906 reciprocates, the stirring rod 4906 and the limiting block 4908 will push the electromagnet 4912 to slide synchronously. The electromagnet 4912 is connected to the locking block 4915 and the connecting rod 4905, causing the connecting rod 4905 to move synchronously. The electromagnet 4912 slides on the inner wall of the annular plate 4911, so that the rotating column 4903 drives the electromagnet 4912 to rotate while the electromagnet 4912 can slide stably on the inner wall of the rotating column 4903. When the connecting rod 4905 slides back and forth, it will compress the first elastic element 4910, and the limiting column 4904 rotates on the inner wall of the rotating column 4903, so that the first elastic element 4910 can push the connecting rod 4905 to reset. When the electromagnet 4912 stops being powered, the second elastic element 4914 will pull the locking block 4915 to reset and disengage from the rectangular groove 4916.

[0031] Please see the appendix Figure 5 - Appendix Figure 7 A first one-way valve 4917 is provided on the inner wall of the bottom end of the connecting rod 4905. The inner wall of the connecting rod 4905 slides on the outer wall of the second water inlet pipe 45. A piston 4919 rotates on the outer wall of the connecting rod 4905. The outer wall of the piston 4919 slides on the inner wall of the first inner cylinder 47. A second one-way valve 4918 is provided on the inner wall of the piston 4919.

[0032] Specifically, during the initial stage of flocculent coagulation, the connecting rod 4905 connects to the second water inlet pipe 45, allowing water supplied by the second water inlet pipe 45 to be discharged into the first inner cylinder 47 through the first one-way valve 4917. Furthermore, the stirring rod 4906 can perform stirring. Because the annular filter screen on the lower side of the first inner cylinder 47 is only half the height of the piston 4919, water in the first inner cylinder 47 will not be discharged from the annular filter screen into the space between the first inner cylinder 47 and the second inner cylinder 46. When the stirring rod 4906 and the piston 4919 move synchronously... When the piston 4919 slides, it draws water from the filter screen on the lower side of the first inner cylinder 47 between the first inner cylinder 47 and the second inner cylinder 46 to the lower side of the piston 4919, and the second water inlet pipe 45 stops supplying water. When the piston 4919 slides down, the water will be discharged through the filter screen on the lower side of the first inner cylinder 47 and the second one-way valve 4918. Moreover, when the piston 4919 slides down, it can prevent the two sets of filter screens from clogging and prevent the accumulation of condensed flocculent matter between the second inner cylinder 46 and the first inner cylinder 47.

[0033] The process involves wastewater entering the softening tank 31 through the main inlet pipe 2 and the first inlet pipe 36. As the wastewater rises within the softening tank 31, alkaline compounds are added to the softening tank 31 through the first reagent dosing pipe 34 via the alkali dosing tank 11. Simultaneously, seed crystals are continuously added from the mixing tank 6 via the crystal nucleus dosing pipe 33. The alkaline compounds accelerate the chemical reaction between the seed crystals and the hard water components in the wastewater. The resulting crystals adhere to the surface of the seed crystals, forming separable particulate impurities. These particulate impurities slide down to the first drain pipe 37 under gravity, discharging the impurities into the sludge storage tank 12 for dewatering treatment. After impurities are discharged, acid is added to the softening tank 31 through the first reagent addition pipe 34 via the acid addition tank 10, adjusting the pH value of the wastewater in the softening tank 31 to a suitable range. The softened water is then discharged into the fluidizing tank 41 through the first outlet pipe 32. The turbid water rises naturally along the inner wall of the first inner cylinder 47 and is fed into the second inner cylinder 46 through the feed inlet on the upper side of the fluidizing tank 41, along with seed crystals, PAC, quartz sand, and activated carbon. PAM is then added through the PAM addition tank 8. When the turbid water is in full contact, the servo motor 4902 is started to drive the rotating column 4903, the limiting block 4908 and the stirring rod 4906 to rotate, which accelerates the mixing speed of the seed crystals, PAC, PAM and turbid water, and at the same time breaks up bad clumps. Meanwhile, the guide post 4907 on the outer wall of the stirring rod 4906 slides on the inner wall of the guide groove 4909, so that the stirring rod 4906 slides back and forth while rotating, thereby avoiding dead corners on the inner wall of the first inner cylinder 47 and causing the accumulation of flocculent matter. When the stirring rod 4906 and the connecting rod 4905 run together, the slider 4913 and the annular plate 4911 are energized, so that the electromagnet 4912 drives the locking block 4915 to lock the rectangular groove 4916, so that the connecting rod 4905 is connected to the rotating column 4903. When the stirring rod 4906 slides back and forth, it drives the connecting rod 4905 to slide synchronously, so that the piston 4919 slides to draw water between the first inner cylinder 47 and the second inner cylinder 46 from the filter screen on the lower side of the first inner cylinder 47 to the lower side of the piston 4919. When the piston 4919 slides down, the water is discharged through the filter screen on the lower side of the first inner cylinder 47 and the second one-way valve 4918, while preventing the two sets of filter screens from clogging and avoiding the accumulation of condensed flocculent matter between the second inner cylinder 46 and the first inner cylinder 47. The dispersed flocculent matter is pushed by the rising water flow and remixed with the quartz sand or activated carbon, and accumulates at the bottom of the fluidizing tank 41. Unmixable flocculent material re-enters the first inner cylinder 47 through the arc-shaped surface of the second inner cylinder 46 for secondary mixing.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly solid-liquid separation device based on crystallization granulation and softening, comprising a base plate (1), characterized in that: The inner wall of the base plate (1) is provided with a main water inlet pipe (2). The upper surface of the base plate (1) is fixed with a PAM dosing box (8) and a PAC dosing box (9). The upper surface of the base plate (1) is fixed with multiple sets of softening components (3) and solid-liquid separation components (4). The upper surface of the base plate (1) is fixed with an acid dosing box (10) and an alkali dosing box (11). The inner wall of the base plate (1) is provided with a mud storage tank (12). The upper surface of the base plate (1) is fixed with a mortar pump (7). The output end of the mortar pump (7) is fixed with a mixing box (6). The lower surface of the mixing box (6) is fixed on the upper surface of the base plate (1). The upper surface of the base plate (1) is fixed with a material storage box (5).

2. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 1, characterized in that: The softening component (3) includes a softening tank (31), the lower surface of which is fixed to the upper surface of the base plate (1). The lower inner wall of the softening tank (31) is provided with a first reagent dosing pipe (34), a first drain pipe (37) and a first water inlet pipe (36). The inner wall of the softening tank (31) is fixed with an inclined plate (35), the inner wall of which is fixed to the outer wall of the first drain pipe (37). The upper inner wall of the softening tank (31) is provided with a crystal nucleus dosing pipe (33) and a first water outlet pipe (32).

3. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 1, characterized in that: The solid-liquid separation component (4) includes a fluidizing tank (41), the lower surface of which is fixed to the upper surface of the base plate (1). The upper inner wall of the fluidizing tank (41) is provided with a stirring component (49). The inner wall of the fluidizing tank (41) is provided with a second water outlet pipe (42). The lower inner wall of the fluidizing tank (41) is provided with a second reagent dosing pipe (43), a second sewage pipe (44), and a second water inlet pipe (45). The inner wall of the fluidizing tank (41) is fixed with a support plate (48). The inner wall of the support plate (48) is fixed with the outer wall of the second water inlet pipe (45). The upper surface of the support plate (48) is respectively fixed with a second inner cylinder (46) and a first inner cylinder (47). The lower sides of the second inner cylinder (46) and the first inner cylinder (47) are both designed with annular filter screens.

4. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 3, characterized in that: The stirring assembly (49) includes a hollow column (4901), the outer wall of which is fixed to the inner wall of the fluidizing tank (41), a servo motor (4902) is fixed on the upper surface of the hollow column (4901), and a rotating column (4903) is fixed at the output end of the servo motor (4902). The outer wall of the rotating column (4903) rotates on the inner wall of the hollow column (4901).

5. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 4, characterized in that: The inner wall of the rotating column (4903) has a rotatable limiting column (4904), and the outer wall of the limiting column (4904) has a sliding connecting rod (4905). The outer wall of the connecting rod (4905) slides on the inner wall of the rotating column (4903). A first elastic element (4910) is fixed between the bottom end of the limiting column (4904) and the inner wall of the connecting rod (4905).

6. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 5, characterized in that: The outer wall of the connecting rod (4905) has a rotating stirring rod (4906). The outer wall of the stirring rod (4906) rotates on the inner wall of the hollow column (4901) and the rotating column (4903). The outer wall of the stirring rod (4906) is fixed with a limiting block (4908). The outer wall of the limiting block (4908) slides on the inner wall of the rotating column (4903). The inner wall of the stirring rod (4906) has a rotating guide column (4907). The outer wall of the guide column (4907) slides on the inner wall of the hollow column (4901).

7. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 6, characterized in that: The hollow column (4901) has a guide groove (4909) on its inner wall. The outer wall of the guide column (4907) is attached to the inner wall of the guide groove (4909). An annular plate (4911) slides on the inner wall of the hollow column (4901). A slider (4913) is fixed on the outer wall of the annular plate (4911). The outer wall of the slider (4913) slides on the inner wall of the hollow column (4901).

8. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 7, characterized in that: The inner wall of the annular plate (4911) is provided with an annular groove, and an electromagnet (4912) slides on the inner wall of the annular plate (4911). The outer wall of the electromagnet (4912) slides on the inner wall of the annular groove, the outer wall of the electromagnet (4912) slides on the inner wall of the rotating column (4903), and the outer wall of the electromagnet (4912) is attached to the inner wall of the stirring rod (4906).

9. The environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 8, characterized in that: The inner wall of the connecting rod (4905) has a sliding block (4915) made of iron material. A second elastic element (4914) is fixed between the outer wall of the block (4915) and the inner wall of the connecting rod (4905). The outer wall of the block (4915) is engaged with the inner wall of the electromagnet (4912). The inner wall of the electromagnet (4912) has a rectangular groove (4916). The outer wall of the block (4915) is attached to the inner wall of the rectangular groove (4916).

10. An environmentally friendly solid-liquid separation device based on crystallization granulation and softening according to claim 9, characterized in that: The inner wall of the bottom end of the connecting rod (4905) is provided with a first one-way valve (4917). The inner wall of the connecting rod (4905) slides on the outer wall of the second water inlet pipe (45). The outer wall of the connecting rod (4905) is provided with a piston (4919). The outer wall of the piston (4919) slides on the inner wall of the first inner cylinder (47). The inner wall of the piston (4919) is provided with a second one-way valve (4918).

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