Cooling crystallization process based on alum preparation

Abstract

The invention discloses a cooling crystallization process based on alum preparation, and relates to the technical field of alum preparation, and the cooling crystallization process specifically comprises the following steps: S1, injecting an alum leachate with slurry into a pool body of a crystallization pool, and then injecting a cooling liquid into a jacket located at the left side of the crystallization pool from an inlet pipe; through the designed scraping mechanism, when alum crystals are crystallized on the inner walls of a plurality of tank bodies in the crystallizing tank, scraping plates can move downwards into the tank bodies under the action of hydraulic rods, and then gears are driven to rotate through rotating inner gear rings; and furthermore, the plurality of scraping plates can be indirectly driven to synchronously rotate to scrape alum crystals on the inner wall of the tank body, so that automatic cleaning operation is realized, manual cleaning is not needed, the cleaning quality and the cleaning progress are improved, and the alum preparation progress of the crystallizing tank is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of alum preparation, in particular to a cooling crystallization process based on alum preparation. Background Art

[0002] Alum is a complex salt of potassium sulfate and aluminum sulfate containing water of crystallization. It is soluble in water but insoluble in ethanol. It is often used to purify water in life. During the preparation of alum, it will be cooled and crystallized through a crystallization pool. The slurry-containing alum extract will be injected into the crystallization pool, and the pool body in the crystallization pool will be cooled and naturally precipitated to achieve static crystallization.

[0003] The Chinese patent application No. 201410780996.2 discloses a device for cooling and crystallizing alum. The patent injects alum leachate into a pool body, and then a jacket is installed at the bottom of the pool body. Cooling water enters the jacket to cool the pool body, thereby quickly cooling the alum leachate injected into the pool body. However, after the alum leachate crystallizes in the pool body, it is necessary to manually clean and remove the alum crystals crystallized on the inner wall of the pool body, which will increase the workload of the operators, and manual cleaning will also consume a lot of time, which will reduce the progress of alum preparation in the crystallization pool. For this reason, we propose a cooling crystallization process based on alum preparation. Summary of the invention

[0004] The object of the present invention is to provide a cooling crystallization process based on alum preparation to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a cooling crystallization process based on alum preparation, specifically comprising the following steps:

[0006] S1, injecting the alum leachate with slurry into the pool body in the crystallization pool, and then injecting the coolant into the jacket located on the left side of the crystallization pool from the inlet pipe;

[0007] S2, the cooling liquid enters the jacket to cool and crystallize the alum leachate in the pool body, and the alum leachate in the pool body is discharged through the lower port after the crystallization is completed;

[0008] S3, open the hydraulic rod, the working end of the hydraulic rod moves downward to drive the scraping mechanism and the grinding piece to move into the tank body, the scraper, the vertical grinding roller and the horizontal grinding roller rotate counterclockwise to scrape and grind the crystals on the wall of the tank body into fine particles;

[0009] S4. The crystals ground into fine particles fall from the lower opening into the collecting base below, and the crystals are collected by the collecting base. Finally, the crystals in the collecting base are cleaned out and enter the next process.

[0010] Preferably, a pool body is provided on the crystallization pool, a jacket is provided between the pool body and the crystallization pool, and a coolant is injected to cool the alum leachate therein, and a scraping mechanism is also provided on the crystallization pool;

[0011] The scraping mechanism comprises a cleaning component and a driving component for cleaning alum crystals on the inner wall of the pool body.

[0012] Preferably, the cleaning assembly comprises a hydraulic rod and a scraper located inside the crystallization pool, the scraper is used to scrape the alum crystals on the inner wall of the pool, the working end of the hydraulic rod is fixedly provided with a top ring, and the outside of the top ring is fixedly provided with a lower connecting rod;

[0013] A middle bearing is fixedly provided at the end of the lower connecting rod, a rotating rod is rotatably provided inside the middle bearing for driving a scraper to rotate, the scraper is fixed on the bottom of the rotating rod, an inclined plate is fixedly provided on the scraper, a lower port is fixedly provided at the bottom of the pool body for discharging alum leachate and crystals in the pool body, a sealing plate is provided on the lower port to increase the sealing between the sealing plate and the lower port, and a bottom plate is fixedly provided at the bottom of the hydraulic rod.

[0014] Preferably, the driving assembly comprises a top column and an inner gear ring installed on the top of the top ring, the outer sleeve of the top column is provided with a top bearing, and the outer part of the top bearing is fixedly provided with multiple groups of upper connecting rods for fixing the inner gear ring.

[0015] Preferably, a gear is fixedly provided on the outer side of the top of the rotating rod, an upper motor is fixedly provided on the top of the top ring to drive the rotating rod to rotate, and a rotating wheel is fixedly provided on the working end of the upper motor.

[0016] Preferably, the scraper is provided with a grinding piece for grinding alum crystals on the inner wall of the pool body, the grinding piece includes a vertical grinding roller and a horizontal grinding roller, a mounting rod is provided on the top of the vertical grinding roller, a connecting bearing is provided on the outside of the mounting rod, and an upper rod is fixedly provided between the outer wall of the connecting bearing and the rotating rod.

[0017] Preferably, both ends of the transverse grinding roller are provided with transverse bars, a bottom bearing is provided outside the transverse bar, a T-shaped bar is provided on the outer wall of the bottom bearing, a transverse plate is provided outside the T-shaped bar, and a mounting ring is provided outside the transverse plate.

[0018] Preferably, a connecting spring is sleeved on the outside of the T-shaped rod, and the connecting spring is located between the transverse plate and the mounting ring. An inclined rod is fixedly arranged between the transverse plate and the rotating rod.

[0019] Preferably, a collecting member for collecting alum crystals is provided at the bottom of the crystallization pool, the collecting member comprises a collecting base and a strip plate, two groups of cylinders are fixedly provided on the top of the bottom plate, a bottom ring is fixedly provided on the top of the strip plate, and a plurality of groups of lower rods are fixedly provided on the top of the bottom ring;

[0020] A row pipe is fixedly arranged on the outside of the collecting base, and a valve is arranged on the row pipe.

[0021] Preferably, a plurality of groups of columns are fixedly provided at the bottom of the crystallization pool, the bottoms of the columns are fixedly connected to the collecting base, a connecting pipe is fixedly provided between two groups of the jackets, and an outlet pipe and an inlet pipe are fixedly provided on the jackets, respectively.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The scraping mechanism designed in the present invention can move the scraper downward into the pool body through the action of the hydraulic rod when alum crystals are crystallized on the inner walls of multiple pool bodies in the crystallization pool, and then drive the gear to rotate through the rotating internal gear ring, thereby indirectly driving multiple scrapers to rotate synchronously to scrape the alum crystals on the inner wall of the pool body, thereby realizing automated cleaning operation without the need for manual cleaning, improving the cleaning quality and cleaning progress, and thereby improving the preparation progress of alum in the crystallization pool.

[0024] (2) The present invention adopts a designed grinding piece. When the scraper is rotating to scrape the alum crystals on the inner wall of the pool body, the vertical grinding roller and the horizontal grinding roller can crush the alum crystals on the inner wall of the pool body and the upper surface of the sealing disk in advance, so that the scraper can scrape the alum crystals, and then the alum crystals that fall to the bottom of the pool body are further crushed by the rotating horizontal grinding roller. The scraped alum crystals can be discharged smoothly through the lower port, saving the subsequent process of crushing the alum crystals by crushing equipment.

[0025] (3) The collecting member of the present invention is designed so that when discharging the alum leachate or alum crystals in the pool body, the bottom ring can be moved downward by the cylinder, thereby driving the sealing plate at the bottom of the pool body to descend synchronously. When the sealing plate is covered, it is raised synchronously, which is convenient for opening or closing the sealing plate. The alum leachate in the pool body flows out to the collecting base below and is discharged outward through the discharge pipe, while the alum crystals in the pool body fall into the collecting base to complete the collection of the alum crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection structure between the inner gear ring and the gear of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure between the top bearing and the upper connecting rod of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the vertical grinding roller of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the transverse grinding roller of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the horizontal plate and the inclined rod of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the cell body and the sealing plate of the present invention;

[0034] Fig. 9 This is a schematic diagram of the crystallization pool structure viewed from above of the present invention;

[0035] Fig.10 It is a schematic diagram of the structure of the scraping mechanism of the present invention in working state;

[0036] In the figure: 100, crystallization tank; 101, tank body; 102, jacket; 103, connecting pipe; 104, outlet pipe; 105, inlet pipe; 106, column; 200, top column; 201, inclined plate; 202, bottom plate; 203, rotating rod; 204, top bearing; 205, inner gear ring; 206, lower port; 207, hydraulic rod; 208, upper connecting rod; 209, top ring; 210, gear; 211, lower connecting rod; 212, scraper; 213 , upper motor; 214, rotating wheel; 217, middle bearing; 218, sealing plate; 300, vertical grinding roller; 301, horizontal grinding roller; 302, horizontal plate; 303, connecting bearing; 304, upper rod; 305, oblique rod; 306, T-shaped rod; 307, connecting spring; 308, mounting ring; 309, bottom bearing; 400, collecting base; 401, lower rod; 402, cylinder; 403, strip plate; 404, bottom ring; 405, drainage pipe. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 1-Figure 10 The present invention provides a technical solution: a cooling crystallization process based on alum preparation, specifically comprising the following steps:

[0040] S1, injecting the alum leachate with slurry into the pool body 101 in the crystallization pool 100, then injecting the cooling liquid from the inlet pipe 105 into the jacket 102 located on the left side of the crystallization pool 100, then injecting the cooling liquid into other jackets 102 through the connecting pipe 103, and finally discharging it outward through the outlet pipe 104;

[0041] S2, the cooling liquid enters the jacket 102 to cool and crystallize the alum leachate in the tank body 101. After the crystallization is completed, the cylinder 402 is started, and the working end of the cylinder 402 moves downward to drive the sealing plate 218 to move downward, thereby opening the sealing plate 218, and the alum leachate in the tank body 101 is discharged into the collecting base 400 through the lower port 206, and the valve on the discharge pipe 405 is opened to discharge the alum leachate;

[0042] S3, then under the action of the cylinder 402, the sealing plate 218 moves upward to cover the top position of the lower opening 206, and then the hydraulic rod 207 is turned on, and the working end of the hydraulic rod 207 moves downward to drive the scraping mechanism and the grinding piece to move, and then the scraper 212, the vertical grinding roller 300 and the horizontal grinding roller 301 contact the inner wall of the pool body 101, and by turning on the upper motor 213, the working end of the upper motor 213 drives the rotating wheel 214 to rotate and drive the outer wall of the top bearing 204 and the inner gear ring 205 to rotate, so as to drive the rotating rod 203 to rotate, so that the scraper 212, the vertical grinding roller 300 and the horizontal grinding roller 301 rotate counterclockwise, and the scraper 212 is used to scrape the crystals located on the inner wall of the pool body 101 and the upper surface of the sealing plate 218, and at the same time, the vertical grinding roller 300 and the horizontal grinding roller 301 can grind the crystals on the inner wall of the pool body 101 to make them into fine particles;

[0043] S4. The sealing plate 218 is then driven downward and opened by the hydraulic rod 207, and the crystals ground into fine particles fall from the lower opening 206 into the collecting base 400 below. The crystals are collected by the collecting base 400, and finally the crystals in the collecting base 400 are cleaned out and processed in the next step.

[0044] The crystallization pool 100 is provided with a plurality of pool bodies 101, and a jacket 102 is fixedly provided between the pool body 101 and the crystallization pool 100. By injecting a coolant into the jacket 102, the cooling of the alum leachate in the pool body 101 can be accelerated. The crystallization pool 100 is provided with a scraping mechanism, which includes a cleaning component and a driving component for cleaning the alum crystals on the inner wall of the pool body 101. The cleaning component includes a hydraulic rod 207 and a scraper 212 installed inside the crystallization pool 100. When the scraper 212 moves downward, the scraper 212 moves downward. When the scraper 212 moves into the pool body 101, the bottom of the scraper 212 can scrape the alum crystals on the inner wall of the pool body 101. When the bottom contacts the alum crystals at the bottom of the pool body 101, the hydraulic rod 207 drives the scraper 212 to move downward while the rotating scraper 212 moves downward, thereby effectively cleaning the alum crystals at the bottom area of ​​the inner wall of the pool body 101. The working end of the hydraulic rod 207 is fixedly provided with a top ring 209, and the outside of the top ring 209 is fixedly provided with multiple groups of lower connecting rods 211.

[0045] A middle bearing 217 is fixedly provided at the end of the lower connecting rod 211, and the rotating rotating rod 203 can drive the scraper 212 to rotate. The rotating rod 203 is rotatably provided inside the middle bearing 217. The scraper 212 is fixed to the bottom of the rotating rod 203, and an inclined plate 201 is fixedly provided on the scraper 212. A lower port 206 is fixedly provided at the bottom of the pool body 101, and the alum leachate and the crushed alum crystals in the pool body 101 can be discharged outward through the lower port 206. A sealing plate 218 is provided on the lower port 206, and a bottom plate 202 is fixedly provided at the bottom of the hydraulic rod 207.

[0046] Embodiment 2

[0047] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 ,and Fig.10 The driving assembly includes a top column 200 and an inner gear ring 205 installed on the top of a top ring 209. A top bearing 204 is sleeved on the outside of the top column 200. A plurality of upper connecting rods 208 are fixedly arranged on the outside of the top bearing 204. The ends of the upper connecting rods 208 are fixedly connected to the inner gear ring 205.

[0048] A gear 210 is fixedly provided on the outer side of the top of the rotating rod 203. When the inner gear ring 205 rotates, it can drive the gear 210 to rotate, and then drive the rotating rod 203 to rotate. The outer wall of the gear 210 is meshed with the inner wall of the inner gear ring 205. An upper motor 213 is fixedly provided on the top of the top ring 209. A rotating wheel 214 is fixedly provided on the working end of the upper motor 213. The top bearing 204 is composed of an outer ring, a ball and an inner ring. When the rotating wheel 214 rotates, it can drive the outer ring outside the top bearing 204 to rotate, thereby driving the upper connecting rod 208 to rotate. The outer wall of the rotating wheel 214 is in contact with the outer wall of the top bearing 204.

[0049] The scraping mechanism designed in the present invention can move the scraper 212 downward into the pool body 101 under the action of the hydraulic rod 207 when alum crystals are crystallized on the inner walls of multiple pool bodies 101 in the crystallization pool 100, and then drive the gear 210 to rotate through the rotating inner gear ring 205, thereby indirectly driving the multiple scrapers 212 to rotate synchronously to scrape the alum crystals on the inner wall of the pool body 101, thereby realizing automated cleaning operation without manual cleaning, improving the cleaning quality and cleaning progress, and thereby improving the alum preparation progress of the crystallization pool 100.

[0050] When the alum crystals in the pool body 101 are crystallized, the hydraulic rod 207 is started. At this time, the working end of the hydraulic rod 207 moves downward to drive the top ring 209 to move, and the top ring 209 drives the top column 200, the inner gear ring 205 and the scraper 212 to move. Then the surface of the scraper 212 contacts the inner wall of the pool body 101, and then the upper motor 213 is started. The working end of the upper motor 213 drives the rotating wheel 214 to rotate, which can drive the outer part of the top bearing 204 to rotate, and then the upper connecting rod 208 and the inner gear ring 205 to rotate. The inner gear ring 205 drives the gear 210, the rotating rod 203 and the scraper 212 to rotate. At this time, the scraper 212 can scrape the alum crystals on the inner wall of the pool body 101 and the upper surface of the sealing plate 218, and the alum crystals that fall on the bottom of the pool body 101 are moved closer to the middle position of the pool body 101 through the inclined plate 201, so as to facilitate the subsequent discharge of the alum crystals.

[0051] Embodiment 3

[0052] Based on Example 2, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.10The scraper 212 is provided with a grinding piece for grinding the alum crystals on the inner wall of the pool body 101, and the grinding piece includes a vertical grinding roller 300 and a horizontal grinding roller 301. The vertical grinding roller 300 and the horizontal grinding roller 301 can crush the alum crystals on the inner wall of the pool body 101, saving the subsequent process of crushing the alum crystals separately by crushing equipment. A mounting rod is fixedly provided on the top of the vertical grinding roller 300, and a connecting bearing 303 is provided on the outside of the mounting rod. An upper rod 304 is fixedly provided between the outer wall of the connecting bearing 303 and the rotating rod 203. Both ends of the horizontal grinding roller 301 are fixedly provided with a horizontal rod, and a bottom bearing 309 is provided on the outside of the horizontal rod. A T-shaped rod 306 is fixedly provided on the outer wall of the bottom bearing 309, and a horizontal plate 302 is slidably provided on the outside of the T-shaped rod 306, and a mounting ring 308 is fixedly provided on the outside of the horizontal plate 302;

[0053] A connecting spring 307 is also sleeved on the outside of the T-shaped rod 306. The connecting spring 307 can make the horizontal grinding roller 301 always generate downward force, thereby increasing the compression effect of the horizontal grinding roller 301 on the alum crystals. The connecting spring 307 is fixed between the horizontal plate 302 and the mounting ring 308, and an inclined rod 305 is fixed between the horizontal plate 302 and the rotating rod 203.

[0054] The present invention adopts a designed grinding piece. When the scraper 212 is rotating to scrape the alum crystals on the inner wall of the pool body 101, the vertical grinding roller 300 and the horizontal grinding roller 301 are used to crush the alum crystals on the inner wall of the pool body 101 and the upper surface of the sealing plate 218 in advance, so that the scraper 212 can scrape the alum crystals, and then the rotating horizontal grinding roller 301 can further crush the alum crystals that fall to the bottom of the pool body 101, so that the scraped alum crystals can be smoothly discharged outward through the lower port 206, and the subsequent process of crushing the alum crystals by crushing equipment is saved.

[0055] During use, when the scraper 212 rotates, it will drive the vertical grinding roller 300 and the horizontal grinding roller 301 to rotate. At this time, the vertical grinding roller 300 can crush the alum crystals located on the inner wall of the pool body 101, and the rotating horizontal grinding roller 301 can crush the alum crystals located at the bottom of the pool body 101 and the top of the sealing plate 218. Then, when the scraper plate 212 scrapes the alum crystals on the inner wall of the pool body 101 and the top of the sealing plate 218, the upper motor 213 is reversed, and then the vertical grinding roller 300 and the horizontal grinding roller 301 are rotated in the opposite direction to further crush the alum crystals that fall to the bottom of the pool body 101 and the top of the sealing plate 218. After rotating in the opposite direction for one circle, the upper motor 213 is reversed. This is repeated many times to crush the alum crystals. During the crushing process, the horizontal grinding roller 301 can always maintain a downward force by connecting the spring 307, thereby increasing the effect of the horizontal grinding roller 301 on crushing the alum crystals.

[0056] Embodiment 4

[0057] Based on Example 3, please refer to Figure 1 , Figure 2 , Figure 8 and Fig. 9 A collecting piece for collecting alum crystals is provided at the bottom of the crystallization pool 100, and the collecting piece includes a collecting base 400 and a strip plate 403. Two groups of cylinders 402 are fixedly provided on the top of the bottom plate 202, and the cylinders 402 can indirectly drive multiple sealing plates 218 to synchronously descend and open or ascend and close. The working end of the cylinder 402 is fixedly connected to the strip plate 403, and a bottom ring 404 is fixedly provided on the top of the strip plate 403. Multiple groups of lower rods 401 are fixedly provided on the top of the bottom ring 404, and the top of the lower rod 401 is fixedly connected to the bottom of the sealing plate 218. A discharge pipe 405 is fixedly provided on the outside of the collecting base 400, and the alum leachate flowing into the collecting base 400 can be discharged through the discharge pipe 405, and a valve is provided on the discharge pipe 405.

[0058] The collecting member of the present invention is designed so that when discharging the alum leachate or alum crystals in the pool body 101, the bottom ring 404 can be moved downward by the cylinder 402, thereby driving the sealing plate 218 at the bottom of the pool body 101 to descend synchronously. When the sealing plate 218 is covered, it is raised synchronously, which facilitates opening or closing of the sealing plate 218. The alum leachate in the pool body 101 flows out to the collecting base 400 below and is discharged outward through the discharge pipe 405, while the alum crystals in the pool body 101 fall into the collecting base 400 to complete the collection of the alum crystals.

[0059] In use, before cleaning the alum crystals on the inner wall of the pool body 101, the cylinder 402 is started, and the working end of the cylinder 402 descends to drive the strip plate 403, the bottom ring 404, the lower rod 401 and the multiple sets of sealing plates 218 to descend. When the bottom of the sealing plate 218 is below the lower opening 206, the sealing plate 218 is opened, and then the alum leachate located inside the pool body 101 flows downward through the lower opening 206 to the collecting base 400, and then the valve on the discharge pipe 405 is opened to discharge the alum leachate. After the discharge is completed, the cylinder 402 moves upward to drive the multiple sets of sealing plates to discharge. The sealing plate 218 rises synchronously to cover the bottom area of ​​the pool body 101, and then the alum crystals on the inner wall of the pool body 101 are cleaned. After the alum crystals are scraped and crushed, the cylinder 402 is started again to move the multiple sealing plates 218 downward. Then, after the bottom of the sealing plate 218 is below the lower opening 206, the crushed alum crystals in the pool body 101 are moved closer to the lower opening 206 in the middle of the pool body 101 through the rotating scraper 212 and the inclined plate 201, so that the crushed alum crystals fall from the lower opening 206 to the collection base 400 below to complete the collection of the alum crystals.

[0060] In this embodiment, a plurality of groups of columns 106 are fixedly provided at the bottom of the crystallization pool 100, the bottom of the columns 106 is fixedly connected to the collecting base 400, a connecting pipe 103 is fixedly provided between the two groups of jackets 102, and an outlet pipe 104 and an inlet pipe 105 are fixedly provided on the jacket 102, respectively, the inlet pipe 105 enters the cooling liquid, and the cooling liquid flows out from the outlet pipe 104 after passing through the jacket 102.

[0061] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A cooling crystallization process based on alum preparation, characterized in that: The specific steps include: S1, injecting the alum leachate with pulp into the tank body (101) in the crystallization tank (100), and then injecting the cooling liquid from the inlet pipe (105) into the jacket (102) located on the left side of the crystallization tank (100); S2, the cooling liquid enters the jacket (102) to cool and crystallize the alum leachate in the tank body (101), and after the crystallization is completed, the alum leachate in the tank body (101) is discharged through the lower port (206); S3, the hydraulic rod (207) is turned on, and the working end of the hydraulic rod (207) moves downward to drive the scraping mechanism and the grinding member to move into the tank body (101), and the scraper (212), the vertical grinding roller (300) and the horizontal grinding roller (301) rotate in a counterclockwise direction to scrape and grind the crystals on the inner wall of the tank body (101) to form fine particles; S4. The crystals ground into fine particles fall from the lower opening (206) into the collecting base (400) below. The crystals are collected by the collecting base (400). Finally, the crystals in the collecting base (400) are cleaned out and sent to the next step for processing.

2. A cooling crystallization process based on alum preparation according to claim 1, characterized in that: A crystallization pool (100) is provided with a pool body (101), a jacket (102) is provided between the pool body (101) and the crystallization pool (100), and is used to inject cooling liquid to cool the alum leachate in the pool body (101), and a scraping mechanism is also provided on the crystallization pool (100); The scraping mechanism comprises a cleaning component and a driving component for cleaning alum crystals on the inner wall of the pool body (101).

3. A cooling crystallization process based on alum preparation according to claim 2, characterized in that: The cleaning assembly comprises a hydraulic rod (207) and a scraper (212) located inside the crystallization pool (100), wherein the scraper (212) is used to scrape off alum crystals on the inner wall of the pool body (101), a top ring (209) is fixedly provided at the working end of the hydraulic rod (207), and a lower connecting rod (211) is fixedly provided outside the top ring (209); A middle bearing (217) is fixedly provided at the end of the lower connecting rod (211), a rotating rod (203) is rotatably provided inside the middle bearing (217) for driving the scraper (212) to rotate, the scraper (212) is fixed to the bottom of the rotating rod (203), an inclined plate (201) is fixedly provided on the scraper (212), a lower port (206) is fixedly provided at the bottom of the pool body (101) for discharging alum leaching liquid and crystals in the pool body (101), a sealing plate (218) is provided on the lower port (206) to increase the sealing performance between the sealing plate (218) and the lower port (206), and a bottom plate (202) is fixedly provided at the bottom of the hydraulic rod (207).

4. A cooling crystallization process based on alum preparation according to claim 3, characterized in that: The driving assembly comprises a top column (200) and an inner gear ring (205) mounted on the top of a top ring (209); a top bearing (204) is sleeved on the outside of the top column (200); and a plurality of upper connecting rods (208) are fixedly arranged on the outside of the top bearing (204) for fixing the inner gear ring (205).

5. A cooling crystallization process based on alum preparation according to claim 4, characterized in that: A gear (210) is fixedly provided on the outer side of the top of the rotating rod (203), an upper motor (213) is fixedly provided on the top of the top ring (209) to drive the rotating rod (203) to rotate, and a rotating wheel (214) is fixedly provided on the working end of the upper motor (213).

6. A cooling crystallization process based on alum preparation according to claim 3, characterized in that: The scraper (212) is provided with a grinding piece for grinding alum crystals on the inner wall of the pool body (101), and the grinding piece comprises a vertical grinding roller (300) and a horizontal grinding roller (301). A mounting rod is provided on the top of the vertical grinding roller (300), a connecting bearing (303) is provided on the outside of the mounting rod, and an upper rod (304) is fixedly provided between the outer wall of the connecting bearing (303) and the rotating rod (203).

7. A cooling crystallization process based on alum preparation according to claim 6, characterized in that: Both ends of the transverse grinding roller (301) are provided with transverse bars, a bottom bearing (309) is provided outside the transverse bar, a T-shaped bar (306) is provided on the outer wall of the bottom bearing (309), a transverse plate (302) is provided outside the T-shaped bar (306), and a mounting ring (308) is provided outside the transverse plate (302).

8. A cooling crystallization process based on alum preparation according to claim 7, characterized in that: A connecting spring (307) is also sleeved on the outside of the T-shaped rod (306), and the connecting spring (307) is located between the transverse plate (302) and the mounting ring (308). An inclined rod (305) is fixedly arranged between the transverse plate (302) and the rotating rod (203).

9. A cooling crystallization process based on alum preparation according to claim 2, characterized in that: A collecting member for collecting alum crystals is provided at the bottom of the crystallization pool (100), the collecting member comprising a collecting base (400) and a strip plate (403), two groups of cylinders (402) are fixedly provided on the top of the bottom plate (202), a bottom ring (404) is fixedly provided on the top of the strip plate (403), and a plurality of groups of lower rods (401) are fixedly provided on the top of the bottom ring (404); A drain pipe (405) is fixedly arranged on the outside of the collecting base (400), and a valve is arranged on the drain pipe (405).

10. A cooling crystallization process based on alum preparation according to claim 9, characterized in that: A plurality of groups of columns (106) are fixedly arranged at the bottom of the crystallization pool (100), the bottom of the columns (106) is fixedly connected to the collecting base (400), a connecting pipe (103) is fixedly arranged between two groups of jackets (102), and an outlet pipe (104) and an inlet pipe (105) are respectively fixedly arranged on the jackets (102).

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