Aluminum chloride separation and purification device

Abstract

The utility model belongs to the technical field of water purifying agent production, and particularly relates to an aluminum chloride separation and purification device which comprises a reaction kettle and an evaporation tank, the reaction kettle is used for preparing aluminum chloride and connected with the evaporation tank through a material conveying pipe, an infusion pump and a filter are arranged on the material conveying pipe, the filter is used for filtering aluminum chloride, and a heating sleeve is arranged outside the evaporation tank. The evaporation tank is provided with a scraper mechanism and a dredging mechanism, the scraper mechanism comprises a gear motor and a rotating drum, the rotating drum is in transmission connection with an output shaft of the gear motor, the left side and the right side of the rotating drum are connected with scraper frames, and the dredging mechanism comprises a fixed support, a lifting oil cylinder, a servo motor and a rotating rod; a piston rod of the lifting oil cylinder is fixedly connected with a machine shell of the servo motor through a mounting plate, the rotating rod is arranged in the rotating cylinder in a penetrating mode and is in transmission connection with an output shaft of the servo motor, and the bottom end of the rotating rod is connected with a threaded rod. The device not only can prevent the discharge port from being blocked, but also can scrape off residues on the inner wall of the evaporation tank, and is convenient for later cleaning.

Description

Technical Field

[0001] The utility model belongs to the technical field of water purifier production, and specifically relates to an aluminum chloride separation and purification device. Background Art

[0002] Polyaluminium chloride (PAC) is an inorganic substance, an emerging water purification material, an inorganic polymer coagulant, referred to as polyaluminium. In the prior art, the raw materials for the production of polyaluminium chloride are mainly aluminium chips, aluminium ash and bauxite. With the continuous advancement of technology, people have done a lot of work in recent years on the production of polyaluminium chloride using kaolin and coal-based kaolin, and have made great progress. For example: the invention patent with patent number CN1334241 discloses a "process for producing polyaluminium chloride", in which calcined kaolin is reacted with hydrochloric acid and a regulator at 95-100°C and normal pressure to generate polyaluminium chloride liquid in a one-step method.

[0003] However, the aluminum chloride solution generated by the one-step method is not only mixed with unreacted solid particles, such as silicon dioxide, solid impurities, etc., but also contains unreacted hydrochloric acid solution and a large amount of water. Therefore, the aluminum chloride solution needs to be separated and purified. The current purification steps are mainly: first sedimentation, then filtration, concentration, and finally evaporation and crystallization to obtain aluminum chloride powder. However, during the evaporation and crystallization process, a large amount of residue will adhere to the inner wall of the evaporator, which is not only difficult to clean, but also affects the subsequent production quality. In addition, when discharging powder, the discharge port occasionally becomes blocked, the discharge is slow, and the discharge is not smooth.

[0004] Therefore, improvements are urgently needed. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the utility model provides an aluminum chloride separation and purification device, comprising a reactor and an evaporator, the reactor is used to prepare an aluminum chloride solution, a discharge port is arranged at the bottom of the reactor, and the discharge port is connected to a feed pipe, a liquid pump and a filter are arranged on the feed pipe, the filter is used to filter out impurities and solid particles in the aluminum chloride solution, the top of the evaporator is connected to the feed pipe, an air outlet is arranged at the upper part of the evaporator, a feed outlet is arranged at the bottom of the evaporator, a heating jacket is arranged outside the evaporator, and the evaporator is provided with a scraper mechanism and a drainage mechanism.

[0006] The scraper mechanism includes a reduction motor and a drum. The reduction motor is arranged outside the evaporator, and the drum is vertically arranged inside the evaporator. The top end of the drum passes through the top wall of the evaporator and is connected to the output shaft of the reduction motor through a bevel gear transmission pair. Scraper frames are arranged on the left and right sides of the drum, and the drum is fixedly connected to the scraper frame through a fixing rod. The shape of the scraper frame matches the cross-section inside the evaporator. A gap of 3-5 mm can be left between the scraper frame and the inner wall of the evaporator to prevent the scraper frame from shaking when rotating and causing the output shaft of the reduction motor to get stuck.

[0007] The drainage mechanism includes a fixed bracket, a lifting cylinder and a servo motor arranged outside the evaporator, and a rotating rod arranged inside the evaporator, the fixed bracket is fixed above the evaporator, the lifting cylinder is installed above the fixed bracket, the piston rod of the lifting cylinder extends downward and is fixed with a mounting plate, the servo motor is arranged below the fixed bracket, and the housing of the servo motor is fixedly connected to the mounting plate, the rotating rod is passed through the rotating drum, the top end of the rotating rod is drivingly connected to the output shaft of the servo motor, the bottom end of the rotating rod passes through the rotating drum and is fixedly connected with a threaded rod, and the bottom end of the threaded rod is provided with a pointed cone.

[0008] Optionally, a feeding port is provided at the top of the reactor, and the reactor is provided with a stirring mechanism, the stirring mechanism including a stirring motor and a stirring shaft, the stirring motor is arranged outside the reactor, the stirring shaft is arranged inside the reactor, the top end of the stirring shaft passes through the top wall of the reactor and is drivingly connected to the output shaft of the stirring motor, and a plurality of stirring impellers are arranged on the stirring shaft.

[0009] Optionally, a discharge valve is provided at the discharge port at the bottom of the reactor, and a discharge valve is provided at the discharge port at the bottom of the evaporator.

[0010] Optionally, the filter includes a shell, a top cover is sealedly connected to the top of the shell, a filter inlet and a filter outlet are respectively provided at the front and rear ends of the shell, a filter screen is provided inside the shell, a cleaning mechanism is provided on the front side of the filter screen, the cleaning mechanism includes an electric push rod provided on the outside of the shell and a cleaning rod provided on the inside of the shell, the electric push rod is fixed above the top cover, the free end of the electric push rod passes downward through the top cover and is fixedly connected to the cleaning rod, the cleaning rod is arranged horizontally, a brush is provided on the side of the cleaning rod close to the filter screen, and the bristles of the brush are against the front side of the filter screen, a material guide port is provided at the bottom of the shell, and the position of the material guide port corresponds to the front side of the filter screen.

[0011] Specifically, the filter screen is detachably fixedly installed in the shell, and slide grooves can be set on the left and right inner walls of the shell, and slide frames matching the slide grooves are set on the left and right sides of the filter screen, so that the filter screen can be easily removed and replaced; in addition, in the process of controlling the electric push rod to repeatedly stretch and contract the free end, the brush on the cleaning rod can be used to brush off the solid particles retained on the front side of the filter screen. On the one hand, it can prevent the mesh from being blocked and improve the filtering efficiency. On the other hand, the solid particles brushed off will be discharged along the material guide port.

[0012] Optionally, a screw conveyor is also provided below the filter, the feed port of the screw conveyor is connected to the feed guide port of the filter, the discharge port of the screw conveyor is connected to the evaporation tank through a connecting pipe, and a filter plate is provided at the discharge port of the screw conveyor.

[0013] Specifically, the solid particles entering the screw conveyor from the material guide port are continuously conveyed backwards until they are compressed and accumulated at the rear end of the screw conveyor. During this process, the liquid remaining in the solid particles is squeezed out and passes through the plate holes of the filter plate into the connecting pipe and finally flows into the evaporation tank. That is, the aluminum chloride solution remaining in the solid particles is recovered by the screw conveyor and sent back to the evaporation tank for centralized evaporation and crystallization treatment.

[0014] Optionally, the bevel gear transmission pair includes a meshing vertical bevel gear and a horizontal bevel gear, the vertical bevel gear is mounted on the output shaft of the reduction motor, and the horizontal bevel gear is fixedly sleeved on the outside of the drum.

[0015] Optionally, a support frame is further provided in the evaporation tank, the middle portion of the support frame is rotatably connected to the drum, and both ends of the support frame are fixedly connected to the top wall of the evaporation tank via connecting rods.

[0016] Specifically, the support frame can improve the stability of the drum during rotation and reduce shaking.

[0017] The utility model also includes other components that enable the aluminum chloride separation and purification device to be used normally, which are all conventional technical means in the art. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the art, such as liquid pumps, stirring motors, electric push rods, screw conveyors, lifting cylinders, reduction motors, servo motors and heating jackets.

[0018] The working principle of the utility model is that when in use, hydrochloric acid, a regulator and kaolin are added into a reaction kettle for reaction, a stirring mechanism is used to mix and stir the reactants to accelerate the reaction, and after the reaction is completed, the reactants are discharged into a feed pipe, and after being filtered by a filter, solid particles are filtered out, and the filtered aluminum chloride solution flows into an evaporation tank, and a heating jacket starts to work to heat the evaporation tank, so that the water content and residual hydrochloric acid in the aluminum chloride solution are volatilized and discharged through an air outlet, and the air outlet can be connected to a sodium hydroxide solution to react with hydrogen chloride gas. Neutralization recovery is carried out. As the water evaporates continuously, aluminum chloride crystallizes. After the crystallization is completed, the aluminum chloride powder is discharged from the evaporation tank. If the discharge port is blocked during the discharge process, the lifting cylinder can be controlled to stretch the piston rod, lower the mounting plate, servo motor and rotating rod, and start the servo motor at the same time to drive the rotating rod to rotate, so that the threaded rod and the pointed cone can clear the material blocked at the discharge port. After the discharge is completed, the reduction motor can be started to drive the drum to rotate, and then drive the scraper frame to rotate to scrape off the residue adhering to the inner wall of the evaporation tank, which is convenient for later cleaning.

[0019] The beneficial effect of the utility model is that, through the dredging mechanism, the discharge port of the evaporator can be dredged when the discharge is not smooth, so as to avoid blockage of the discharge port and improve the discharge speed; through the scraper mechanism, the residues adhering to the inner wall of the evaporator can be scraped off, which is convenient for later cleaning, provides convenience for subsequent production and ensures product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the filter of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the evaporation tank of the utility model.

[0024] In the figure: 1. reactor, 2. evaporator, 3. feeding port, 4. stirring mechanism, 5. discharge valve, 6. feeding pipe, 7. suction pump, 8. filter, 9. shell, 10. top cover, 11. filter inlet, 12. filter outlet, 13. filter screen, 14. electric push rod, 15. cleaning rod, 16. guide port, 17. screw conveyor, 18. connecting pipe, 19. air outlet, 20. discharge valve, 21. heating sleeve, 22. scraper mechanism, 23. drainage mechanism, 24. reduction motor, 25. drum, 26. bevel gear transmission pair, 27. scraper frame, 28. fixed rod, 29. fixed bracket, 30. lifting cylinder, 31. servo motor, 32. rotating rod, 33. mounting plate, 34. threaded rod, 35. support frame, 36. filter plate. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.

[0026] Example

[0027] like Figure 1-3 As shown, an embodiment of the utility model provides an aluminum chloride separation and purification device, including a reactor 1 and an evaporation tank 2, the reactor 1 is used to prepare an aluminum chloride solution, a feeding port 3 is provided on the top of the reactor 1, the reactor 1 is provided with a stirring mechanism 4, the stirring mechanism 4 includes a stirring motor and a stirring shaft, the stirring motor is arranged outside the reactor 1, the stirring shaft is arranged inside the reactor 1, the top end of the stirring shaft passes through the top wall of the reactor 1 and is drivingly connected to the output shaft of the stirring motor, a plurality of stirring impellers are arranged on the stirring shaft, a discharge port is provided at the bottom of the reactor 1, and a discharge valve 5 is provided at the discharge port, the discharge port is connected to a feed pipe 6, and a liquid pump 7 and a filter 8 are provided on the feed pipe 6.

[0028] The filter 8 is used to filter out impurities and solid particles in the aluminum chloride solution. The filter 8 includes a shell 9. The top of the shell 9 is sealed and connected with a top cover 10. The front and rear ends of the shell 9 are respectively provided with a filter inlet 11 and a filter outlet 12. A filter screen 13 is provided inside the shell 9. A cleaning mechanism is provided on the front side of the filter screen 13. The cleaning mechanism includes an electric push rod 14 provided outside the shell 9 and a cleaning rod 15 provided inside the shell 9. The electric push rod 14 is fixed above the top cover 10. The free end of the electric push rod 14 passes downward through the top cover 10 and is fixedly connected to the cleaning rod 15. The cleaning rod 15 is arranged horizontally. A brush is provided on one side of the cleaning rod 15 close to the filter screen 13, and the bristles of the brush are against the front side of the filter screen 13. A material guide port 16 is provided at the bottom of the shell 9, and the position of the material guide port 16 corresponds to the front side of the filter screen 13.

[0029] Among them, the filter screen 13 is detachably fixedly installed in the shell body 9, and a slide groove can be set on the left and right inner walls of the shell body 9, and a slide frame matching the slide groove is set on the left and right sides of the filter screen 13, so that the filter screen 13 can be conveniently removed and replaced; in addition, in the process of controlling the electric push rod 14 to repeatedly stretch and contract the free end, the brush on the cleaning rod 15 can be used to brush off the solid particles retained on the front side of the filter screen 13. On the one hand, it can prevent the mesh from being blocked and improve the filtering efficiency. On the other hand, the solid particles brushed off will be discharged along the material guide port 16.

[0030] A screw conveyor 17 is also provided below the filter 8. The feed port of the screw conveyor 17 is connected to the guide port 16 of the filter 8. The discharge port of the screw conveyor 17 is connected to the evaporation tank 2 through the connecting pipe 18. A filter plate 36 is provided at the discharge port of the screw conveyor 17. In this way, the solid particles entering the screw conveyor 17 from the guide port 16 are continuously conveyed backward until they are compressed and accumulated at the rear end of the screw conveyor 17. In this process, the liquid remaining in the solid particles is squeezed out and passes through the plate holes of the filter plate 36 into the connecting pipe 18, and finally flows into the evaporation tank 2. That is, the aluminum chloride solution remaining in the solid particles is recovered by the screw conveyor 17 and sent back to the evaporation tank 2 for concentrated evaporation and crystallization treatment.

[0031] The top of the evaporator 2 is connected to the feed pipe 6, an air outlet 19 is provided at the top of the evaporator 2, a feed outlet is provided at the bottom of the evaporator 2, and a discharge valve 20 is provided at the feed outlet, a heating jacket 21 is provided outside the evaporator 2, and the evaporator 2 is provided with a scraper mechanism 22 and a drainage mechanism 23.

[0032] The scraper mechanism 22 includes a reduction motor 24 and a drum 25. The reduction motor 24 is arranged outside the evaporation tank 2, and the drum 25 is vertically arranged inside the evaporation tank 2. The top end of the drum 25 passes through the top wall of the evaporation tank 2 and is connected to the output shaft of the reduction motor 24 through a bevel gear transmission pair 26. Scraper frames 27 are arranged on the left and right sides of the drum 25, and the drum 25 is fixedly connected to the scraper frame 27 through a fixing rod 28. The shape of the scraper frame 27 matches the cross-section inside the evaporation tank 2. A gap of 5 mm can be left between the scraper frame 27 and the inner wall of the evaporation tank 2 to prevent the scraper frame 27 from shaking when rotating and causing the output shaft of the reduction motor 24 to get stuck.

[0033] The drainage mechanism 23 includes a fixed bracket 29, a lifting cylinder 30 and a servo motor 31 arranged outside the evaporation tank 2, and a rotating rod 32 arranged inside the evaporation tank 2. The fixed bracket 29 is fixed above the evaporation tank 2, and the lifting cylinder 30 is installed above the fixed bracket 29. The piston rod of the lifting cylinder 30 extends downward and is fixed with a mounting plate 33. The servo motor 31 is arranged below the fixed bracket 29, and the housing of the servo motor 31 is fixedly connected to the mounting plate 33. The rotating rod 32 is penetrated in the rotating drum 25, and the top end of the rotating rod 32 is drivingly connected to the output shaft of the servo motor 31. The bottom end of the rotating rod 32 passes through the rotating drum 25 and is fixedly connected with a threaded rod 34, and the bottom end of the threaded rod 34 is provided with a pointed cone.

[0034] The bevel gear transmission pair 26 includes a meshing vertical bevel gear and a horizontal bevel gear. The vertical bevel gear is mounted on the output shaft of the reduction motor 24 , and the horizontal bevel gear is fixedly sleeved on the outside of the rotating drum 25 .

[0035] In addition, a support frame 35 is also provided in the evaporator 2. The middle part of the support frame 35 is rotatably connected to the drum 25, and both ends of the support frame 35 are fixedly connected to the top wall of the evaporator 2 through connecting rods. The support frame 35 can improve the stability of the drum 25 during rotation and reduce shaking.

[0036] The working principle of the utility model is that when in use, hydrochloric acid, a regulator and kaolin are added to a reactor 1 for reaction, a stirring mechanism 4 is used to mix and stir the reactants to accelerate the reaction, and after the reaction is completed, the reactants are discharged into a feed pipe 6, and after filtering by a filter 8, solid particles are filtered out, and the filtered aluminum chloride solution flows into an evaporation tank 2, and a heating jacket 21 starts to work to heat the evaporation tank 2, so that the water content and residual hydrochloric acid in the aluminum chloride solution are volatilized and discharged through an air outlet 19, and the air outlet 19 can be connected to a sodium hydroxide solution to neutralize the hydrogen chloride gas. As the water evaporates and decreases, aluminum chloride crystallizes. After the crystallization is completed, the aluminum chloride powder is discharged from the evaporation tank 2; if the discharge port is blocked during the discharge process, the lifting cylinder 30 can be controlled to stretch the piston rod, lower the mounting plate 33, the servo motor 31 and the rotating rod 32, and at the same time, the servo motor 31 is started to drive the rotating rod 32 to rotate, so that the threaded rod 34 and the pointed cone can clear the material blocked by the discharge port; after the discharge is completed, the reduction motor 24 can be started to drive the rotating drum 25 to rotate, thereby driving the scraper frame 27 to rotate, and the residue adhering to the inner wall of the evaporation tank 2 is scraped off, which is convenient for later cleaning.

[0037] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An aluminum chloride separation and purification device, comprising a reactor and an evaporation tank, Features: The reactor is used to prepare aluminum chloride solution. A discharge port is provided at the bottom of the reactor, and a feed pipe is connected to the discharge port. A liquid pump and a filter are provided on the feed pipe. The filter is used to filter out impurities and solid particles in the aluminum chloride solution. The top of the evaporator is connected to the feed pipe. An air outlet is provided at the top of the evaporator. A discharge port is provided at the bottom of the evaporator. A heating jacket is provided outside the evaporator. The evaporator is provided with a scraper mechanism and a drainage mechanism. The scraper mechanism includes a reduction motor and a drum, the reduction motor is arranged outside the evaporation tank, the drum is vertically arranged inside the evaporation tank, the top end of the drum passes through the top wall of the evaporation tank and is connected to the output shaft of the reduction motor through a bevel gear transmission pair, and scraper frames are arranged on the left and right sides of the drum, and the drum is fixedly connected to the scraper frame through a fixing rod, and the shape of the scraper frame matches the cross section inside the evaporation tank; The drainage mechanism includes a fixed bracket, a lifting cylinder and a servo motor arranged outside the evaporator, and a rotating rod arranged inside the evaporator, the fixed bracket is fixed above the evaporator, the lifting cylinder is installed above the fixed bracket, the piston rod of the lifting cylinder extends downward and is fixed with a mounting plate, the servo motor is arranged below the fixed bracket, and the housing of the servo motor is fixedly connected to the mounting plate, the rotating rod is passed through the rotating drum, the top end of the rotating rod is drivingly connected to the output shaft of the servo motor, the bottom end of the rotating rod passes through the rotating drum and is fixedly connected with a threaded rod, and the bottom end of the threaded rod is provided with a pointed cone.

2. The aluminum chloride separation and purification device according to claim 1, Features: A feeding port is arranged on the top of the reactor, and the reactor is provided with a stirring mechanism, which includes a stirring motor and a stirring shaft. The stirring motor is arranged outside the reactor, and the stirring shaft is arranged inside the reactor. The top end of the stirring shaft passes through the top wall of the reactor and is drivingly connected to the output shaft of the stirring motor. A plurality of stirring impellers are arranged on the stirring shaft.

3. The aluminum chloride separation and purification device according to claim 2, Features: A discharge valve is arranged at the discharge port at the bottom of the reactor, and a discharge valve is arranged at the discharge port at the bottom of the evaporator.

4. The aluminum chloride separation and purification device according to claim 3, Features: The filter includes a shell, the top of the shell is sealed and connected with a top cover, the front and rear ends of the shell are respectively provided with a filter inlet and a filter outlet, a filter screen is provided inside the shell, a cleaning mechanism is provided on the front side of the filter screen, the cleaning mechanism includes an electric push rod provided on the outside of the shell and a cleaning rod provided on the inside of the shell, the electric push rod is fixed above the top cover, the free end of the electric push rod passes downward through the top cover and is fixedly connected to the cleaning rod, the cleaning rod is arranged horizontally, a brush is provided on the side of the cleaning rod close to the filter screen, and the bristles of the brush are against the front side of the filter screen, a material guide port is provided at the bottom of the shell, and the position of the material guide port corresponds to the front side of the filter screen.

5. The aluminum chloride separation and purification device according to claim 4, Features: A screw conveyor is also provided below the filter, the feed port of the screw conveyor is connected to the feed guide port of the filter, the discharge port of the screw conveyor is connected to the evaporation tank through a connecting pipe, and a filter plate is provided at the discharge port of the screw conveyor.

6. The aluminum chloride separation and purification device according to claim 5, Features: The bevel gear transmission pair comprises a meshing vertical bevel gear and a horizontal bevel gear. The vertical bevel gear is mounted on the output shaft of the reduction motor, and the horizontal bevel gear is fixedly sleeved on the outside of the drum.

7. The aluminum chloride separation and purification device according to claim 6, Features: A support frame is also provided in the evaporation tank, the middle part of the support frame is rotatably connected to the drum, and the two ends of the support frame are fixedly connected to the top wall of the evaporation tank through connecting rods.

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