A circulating crystallization tank facilitating feeding

Abstract

The utility model relates to crystallization device technical field especially for a kind of circulating crystallizing tank of convenient feeding, including tank body, the outside wall of tank body is closely attached and is equipped with cooling jacket, the top surface of tank body is equipped with feed inlet, the inner wall of feed inlet is engaged with the outer wall of feed pipe, the inside of tank body is equipped with stirring assembly, tank body bottom is fixedly connected with solid-liquid separator, the side of solid-liquid separator is provided with discharge gate, the other side of solid-liquid separator is installed and is connected with the liquid inlet end of circulating liquid pump by connecting pipe.The device is provided with the feed inlet and feed pipe of mutual engagement docking installation, when the tube body of feed pipe is inserted into inner tube, inner ring abuts with fluorine rubber pad top surface, so that tube body and inner tube sealing docking, when the clamping block is clamped into the clamping groove, the clamping block is tightly clamped into the clamping groove by rotating outer ring, so as to realize the quick docking of feed pipe and feed inlet, and facilitate quick feeding.

Description

Technical Field

[0001] This utility model relates to the field of crystallization equipment technology, specifically to a circulating crystallizer that facilitates feeding. Background Technology

[0002] Sodium perchlorate is an inorganic compound, a white crystalline powder, hygroscopic, decomposing at 482°C. It is readily soluble in water, ethanol, and acetone, but insoluble in ether. Sodium perchlorate crystals are typically prepared using a chemical synthesis method. This involves the reaction of chlorine and sodium hydroxide to first produce sodium chlorate and sodium chloride. At high temperatures, sodium chlorate is converted to sodium perchlorate. Since the solubility of sodium perchlorate in water increases with temperature, the raw material is first dissolved in hot water to form a saturated solution. Then, by controlling the cooling rate, the solution temperature is lowered, reducing the solubility and causing sodium perchlorate crystals to precipitate. The remaining mother liquor after crystallization still contains a certain amount of sodium perchlorate. This mother liquor is separated from the crystals through separation and filtration. The mother liquor is then recycled back for further cooling and crystallization, achieving solute recycling, improving raw material utilization, and reducing waste emissions.

[0003] Chinese utility model patent CN209490508U discloses a crystallization tank, which includes "a tank body, a stirring motor at the top of the tank body; a stirring motor connected to a stirring shaft; a support column coaxially arranged below the stirring shaft; multiple identical fan-shaped partitions horizontally arranged between the support column and the tank body; a first rotating shaft and a second rotating shaft arranged on the partitions; the second rotating shaft of each partition is coaxial with its first rotating shaft; one end of the second rotating shaft is fixed on the arc-shaped edge of the partition near the inner wall of the tank, and the other end extends out of the tank body and is fixed to a connecting plate; a connecting rod is provided between adjacent connecting plates; a distribution tank is connected to the tank body below the partitions; a liquid circulation pipe is provided on one side of the distribution tank"; however, the connection between the inlet and the feed pipe of this device is mostly fixed by common flange and bolt butt joint installation. When the feed pipe is connected to the inlet for feeding, the operation steps are complicated, the operation process is time-consuming and labor-intensive, affecting the feeding speed and making it inconvenient for the device to feed quickly. Utility Model Content

[0004] The purpose of this invention is to provide a circulating crystallizer that facilitates feeding, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating crystallizer for easy feeding, comprising a tank body, wherein a cooling jacket is tightly fitted to the outer wall of the tank body, and a feed inlet is provided on the top surface of the tank body, wherein the inner wall of the feed inlet is engaged with the outer wall of the feed pipe. The tank is equipped with a stirring assembly inside, and a solid-liquid separator is fixedly connected to the bottom of the tank. The solid-liquid separator has a discharge port on one side and is connected to the inlet of a circulating liquid pump via a connecting pipe on the other side. The tank body has a circulation pipe on the side wall near the top surface, and a discharge port is provided on the bottom surface of the tank body. A control solenoid valve is installed at the bottom end of the discharge port. The feed inlet includes a sleeve and an inner tube. The inner wall of the sleeve is movably connected to the outer wall of the inner tube. A fluororubber pad is fixedly connected to the top surface of the inner tube, and a compression spring is sleeved on the outer wall of the inner tube. The feed tube includes a tube body, an inner ring is fixedly connected to the outer wall of the tube body, and a locking block is fixedly connected to each of the two side walls of the inner ring. The inner ring is fixedly connected to the outer ring through the locking blocks on both sides. The stirring assembly includes a stirring shaft, with multiple stirring rods fixedly connected to both sides of the stirring shaft. Scrapers are fixedly connected to the ends of the stirring rods on both sides, and the top of the stirring shaft is connected to the output end of a servo motor fixedly installed on the top surface of the tank.

[0006] The beneficial effects of this utility model are as follows: This device is equipped with a feed inlet and a feed pipe that are mutually interlocked and installed. When the feed pipe is inserted into the inner tube, the inner ring abuts against the top surface of the fluororubber pad, so that the pipe body and the inner tube are sealed and connected. The pipe body is pressed into the sleeve, and the inner ring presses down on the fixing ring, thereby driving the inner tube to press down. During this process, the spring is compressed. When the locking block is inserted into the slot, the outer ring is rotated to tightly lock the locking block into the slot. The compression spring releases the compression force to limit the feed pipe, thereby realizing convenient connection and installation of the feed pipe and the feed inlet. Through the rotation and interlocking connection, the feed pipe and the feed inlet can be quickly connected, which is convenient for rapid feeding. It is simple to operate and highly practical.

[0007] To achieve the effect of circulating crystallization of sodium perchlorate mother liquor: The following configuration is further provided: the bottom end of the circulation pipe is connected to the outlet of the circulation pump, and the discharge port is connected to the solid-liquid separator.

[0008] By adopting the above technical solution, after the cooling and crystallization in the tank is completed, the discharge port of sodium perchlorate is opened by controlling the solenoid valve to discharge the solid-liquid mixture into the solid-liquid separator. After the solid-liquid separation is completed, the remaining mother liquor is fed into the circulating liquid pump through the connecting pipe, and the remaining mother liquor is pumped back into the tank through the circulating pipe for recycling.

[0009] To achieve a sliding connection between the inner tube and the sleeve, allowing the feed tube to slide into the sleeve: Further configuration: slots are provided on both sides of the sleeve; a limiting piece 1 is fixedly connected to the inner side wall of the bottom surface of the sleeve; a fixing ring 1 is fixedly connected to the top surface of the inner tube; a limiting piece 2 is fixedly connected to the bottom surface of the inner tube; a fixing ring 2 is slidably connected to the outer side wall of the inner tube; and the fixing ring 2 is located above the limiting piece 2.

[0010] By adopting the above technical solution, the inner wall of the fixing ring 2 is slidably connected to the outer wall of the inner tube, and the inner tube slides downward in the sleeve without affecting the fixing ring 2, thereby realizing the docking installation of the feed port and the feed pipe.

[0011] To allow the inner tube to slide into the sleeve without affecting the second retaining ring: The setting is further configured such that: the first limiting piece is located between the second fixing ring and the second limiting piece; the outer wall of the first limiting piece is rotatably connected to the outer walls of the second fixing ring and the second limiting piece; and the compression spring is located between the first fixing ring and the second fixing ring.

[0012] By adopting the above technical solution, the compression spring is located between the first fixed ring and the second fixed ring, the second limiting piece is located on the bottom surface of the first limiting piece, and the second fixed ring is slidably connected to the outer wall of the inner tube. This allows the inner tube to slide into the sleeve without affecting the second fixed ring, and the compression spring is squeezed by the first fixed ring. After the locking block and the locking groove are rotated and locked, the elastic potential energy is released by the squeezed compression spring, and the inner tube is pushed back to its original position by the first fixed ring, thereby limiting the docking installation of the feed pipe and the feed port.

[0013] To achieve a sealing structure after the feed tube is inserted into the feed inlet and to achieve a snap-fit ​​connection between the feed tube and the feed inlet: Further configuration: the outer wall of the tube body is slidably connected to the inner wall of the inner tube, the bottom surface of the inner ring is movably abutting against the top surface of the fluororubber pad, the outer wall of the locking block is engaged with the inner wall of the locking groove, and the inner wall of the outer ring is slidably connected to the outer wall of the sleeve.

[0014] By adopting the above technical solution, the bottom surface of the inner ring and the top surface of the fluororubber pad abut against each other, so that the feed pipe forms a sealed structure after being inserted into the feed port, thus preventing leakage. The feed pipe and the feed port are connected by the locking block and the locking groove, so that the feed pipe and the feed port can be installed in a locking and docking manner.

[0015] To address the issue of crystals adhering to the inner wall of the tank during cooling and crystallization: The scraper is further configured such that its outer side wall is in contact with the inner side wall of the tank.

[0016] By adopting the above technical solution, when the stirring shaft is rotating and stirring, the sliding plates on both sides continuously scrape off the crystals on the inner wall of the tank, thus preventing the crystals from adhering to the inner wall of the tank.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a left-side view of the overall cross-sectional structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the tank body of this utility model; Figure 4 This is a cross-sectional view of the feed inlet of this utility model; Figure 5 This is an exploded structural diagram of the feed inlet of this utility model; Figure 6 This is a schematic diagram of the feed pipe of this utility model; Figure 7 This is a top view of the feed pipe of this utility model. Figure 8 This is a schematic diagram of the structure of the stirring assembly of this utility model.

[0019] In the diagram: 1. Tank body; 11. Circulation pipe; 12. Discharge port; 121. Control solenoid valve; 2. Cooling jacket; 3. Feed port; 31. Sleeve; 311. Slot; 312. Limiting plate one; 32. Inner tube; 321. Fixing ring one; 322. Limiting plate two; 323. Fixing ring two; 33. Fluororubber pad; 34. Compression spring; 4. Feed pipe; 41. Pipe body; 42. Inner ring; 43. Locking block; 44. Outer ring; 5. Stirring assembly; 51. Stirring shaft; 52. Stirring rod; 53. Scraper; 54. Servo motor; 6. Solid-liquid separator; 7. Discharge port; 8. Connecting pipe; 9. Circulating liquid pump. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0021] Please see Figures 1 to 8 A circulating crystallizer for easy feeding includes a tank body 1, a cooling jacket 2 tightly fitted to the outer wall of the tank body 1, a feed inlet 3 on the top surface of the tank body 1, and the inner wall of the feed inlet 3 being engaged with the outer wall of the feed pipe 4. A stirring assembly 5 is installed inside the tank body 1. A solid-liquid separator 6 is fixedly connected to the bottom of the tank body 1. A discharge port 7 is provided on one side of the solid-liquid separator 6. The other side of the solid-liquid separator 6 is connected to the inlet end of the circulating liquid pump 9 through a connecting pipe 8. A circulation pipe 11 is provided on the side wall near the top of the tank body 1, and a discharge port 12 is provided on the bottom surface of the tank body 1. A control solenoid valve 121 is installed at the bottom end of the discharge port 12. The feed inlet 3 includes a sleeve 31 and an inner tube 32. The inner wall of the sleeve 31 is movably connected to the outer wall of the inner tube 32. A fluororubber pad 33 is fixedly connected to the top surface of the inner tube 32. A compression spring 34 is sleeved on the outer wall of the inner tube 32. The feed pipe 4 includes a pipe body 41, an inner ring 42 is fixedly connected to the outer wall of the pipe body 41, and a locking block 43 is fixedly connected to the two side walls of the inner ring 42 respectively. The inner ring 42 is fixedly connected to the outer ring 44 through the locking blocks 43 on both sides. The stirring assembly 5 includes a stirring shaft 51, with multiple stirring rods 52 fixedly connected to the two side walls of the stirring shaft 51. Scrapers 53 are fixedly connected to the ends of the stirring rods 52 on both sides. The top end of the stirring shaft 51 is installed and connected to the output end of a servo motor 54 fixedly installed on the top surface of the tank 1.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the bottom end of the circulation pipe 11 is installed and connected to the outlet of the circulation pump 9, and the discharge port 12 is connected to the solid-liquid separator 6.

[0023] In this embodiment, as Figure 4 and Figure 5 As shown, the sleeve 31 has slots 311 on both sides of its sidewalls. A limiting piece 312 is fixedly connected to the inner sidewall of the bottom surface of the sleeve 31. A fixing ring 321 is fixedly connected to the top surface of the inner tube 32. A limiting piece 322 is fixedly connected to the bottom surface of the inner tube 32. A fixing ring 323 is slidably connected to the outer sidewall of the inner tube 32. The fixing ring 323 is located above the limiting piece 322.

[0024] In this embodiment, as Figure 4 and Figure 5 As shown, the first limiting piece 312 is located between the second fixing ring 323 and the second limiting piece 322. The outer wall of the first limiting piece 312 is rotatably connected to the outer walls of the second fixing ring 323 and the second limiting piece 322. The compression spring 34 is located between the first fixing ring 321 and the second fixing ring 323.

[0025] In this embodiment, as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the outer wall of the tube body 41 is slidably connected to the inner wall of the inner tube 32, the bottom surface of the inner ring 42 is movably abutting against the top surface of the fluororubber pad 33, the outer wall of the locking block 43 is engaged with the inner wall of the locking groove 311, and the inner wall of the outer ring 44 is slidably connected to the outer wall of the sleeve 31.

[0026] In this embodiment, as Figure 2 and Figure 8 As shown, the outer wall of the scraper 53 is in contact with the inner wall of the tank 1.

[0027] The computer software involved in the hardware carriers such as the servo motor, cooling jacket, and control solenoid valve in the technical solution is software technology known to those skilled in the art. It is merely applied to the aforementioned hardware carriers. In other words, the computer software portion of the technical solution is an essential technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for the technical problem solved by this application, but it is not a differentiating technical feature or a point of technical improvement. The applicant has not made any technical improvements to the computer software portion involved in the aforementioned related hardware carriers, nor is it a key technical point of the invention.

[0028] Therefore, the "servo motor," "cooling jacket," and "control motor" involved in this application are physical functional modules that combine existing computer software programs or protocols with the hardware carrier of this application. The computer software programs involved in these physical functional modules are all technologies known to those skilled in the art and are not improvements of this application. The improvement of this application should be the interaction between the various physical functional modules, that is, the improvement of the overall structure of the automatic dipping machine of this application, in order to solve the corresponding technical problems to be solved by this application.

[0029] The working process of this easy-to-feed circulating crystallizer is as follows: First, the body 41 of the feed tube 4 is slidably inserted into the inner tube 32 of the feed port 3. At this time, the bottom surface of the inner ring 42 of the feed tube 4 abuts against the fluororubber gasket 33 on the top surface of the inner tube 32, forming a preliminary seal. As the body 41 continues to be inserted, the locking block 43 is embedded in the locking groove 311 on the side wall of the sleeve 31. At the same time, the inner ring 42 presses down the fixing ring 321, causing the inner tube 32 to move down. During this process, the fixing ring 323 slides along the outer wall of the inner tube 32, and its bottom surface is in contact with the top surface of the limiting piece 312 through the compression spring 34. The compression spring 34 is gradually compressed. After the locking block 43 is fully engaged in the slot 311, the outer ring 44 is rotated to fully lock the locking block 43 and the slot 311, completing the docking installation of the feed pipe 4 and the feed port 3, and realizing rapid feeding. When disassembling, the locking block 43 and the slot 311 are released by rotating the outer ring 44, thereby sliding the feed pipe 4 out. The inner tube 32 is rebounded by the compression spring 34, realizing the rebound reset of the inner tube 32. After the inner tube 32 is reset, the top surface of the limiting piece 2 322 at the bottom of the inner tube 32 abuts against the bottom surface of the limiting piece 1 312, and the elastic force of the compression spring 34 makes the bottom surface of the fixing ring 2 323 abut against the top surface of the limiting piece 1 312, thereby limiting the inner tube 32 to be placed in the sleeve 31. After docking, the saturated sodium perchlorate mother liquor enters the tank 1 through the feed pipe 4. The cooling jacket 2 continuously cools the liquid to promote crystallization. The servo motor 54 drives the stirring shaft 51. Through the synergistic action of the stirring rod 52 and the scraper 53, the crystallization process is promoted and the tank wall is prevented from scaling. After crystallization, the solenoid valve 121 is controlled to open the discharge port 12, and the slurry is discharged into the solid-liquid separator 6 for separation. The crystals are collected from the discharge port 7, and the mother liquor is returned to the tank 1 through the circulating liquid pump 9 via the connecting pipe 8 and the circulating pipe 11, realizing continuous crystallization production.

[0030] The control solenoid valve 121 can be a known corrosion-resistant and high-temperature resistant solenoid valve of model 0124, the cooling jacket 2 can be a known jacketed cooler of model LJ-6W, and the servo motor 54 can be a known model 1PM4105-2LF86-1CS1. All of these are known existing technologies and the above models can be used, but are not limited to these.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A circulating crystallizer for easy feeding, comprising a tank body (1), characterized in that: The outer wall of the tank (1) is fitted with a cooling jacket (2), and the top surface of the tank (1) is provided with a feed inlet (3). The inner wall of the feed inlet (3) is engaged with the outer wall of the feed pipe (4). The tank (1) is equipped with a stirring assembly (5), and a solid-liquid separator (6) is fixedly connected to the bottom of the tank (1). A discharge port (7) is provided on one side of the solid-liquid separator (6), and the other side of the solid-liquid separator (6) is connected to the inlet end of the circulating liquid pump (9) through a connecting pipe (8). The tank (1) has a circulation pipe (11) on the side wall near the top surface, and a discharge port (12) is provided on the bottom surface of the tank (1). A control solenoid valve (121) is installed at the bottom end of the discharge port (12). The feed inlet (3) includes a sleeve (31) and an inner tube (32). The inner wall of the sleeve (31) is movably connected to the outer wall of the inner tube (32). A fluororubber pad (33) is fixedly connected to the top surface of the inner tube (32). A compression spring (34) is sleeved on the outer wall of the inner tube (32). The feed pipe (4) includes a pipe body (41), an inner ring (42) is fixedly connected to the outer wall of the pipe body (41), and a locking block (43) is fixedly connected to the two side walls of the inner ring (42). The inner ring (42) is fixedly connected to the outer ring (44) through the locking blocks (43) on both sides. The stirring assembly (5) includes a stirring shaft (51), and multiple stirring rods (52) are fixedly connected to the two side walls of the stirring shaft (51). Scrapers (53) are fixedly connected to the ends of the stirring rods (52) on both sides respectively. The top end of the stirring shaft (51) is installed and connected to the output end of a servo motor (54) fixedly installed on the top surface of the tank (1).

2. The circulating crystallizer for easy feeding as described in claim 1, characterized in that: The bottom end of the circulation pipe (11) is connected to the outlet of the circulation pump (9), and the discharge port (12) is connected to the solid-liquid separator (6).

3. A circulating crystallizer for easy feeding as described in claim 1, characterized in that: The sleeve (31) has slots (311) on both sides. The inner side wall of the bottom surface of the sleeve (31) is fixedly connected to a limiting piece (312). The top surface of the inner tube (32) is fixedly connected to a fixing ring (321). The bottom surface of the inner tube (32) is fixedly connected to a limiting piece (322). The outer side wall of the inner tube (32) is slidably connected to a fixing ring (323). The fixing ring (323) is located above the limiting piece (322).

4. A circulating crystallizer for easy feeding as described in claim 3, characterized in that: The first limiting piece (312) is located between the second fixing ring (323) and the second limiting piece (322). The outer wall of the first limiting piece (312) is rotatably connected to the outer walls of the second fixing ring (323) and the second limiting piece (322). The compression spring (34) is located between the first fixing ring (321) and the second fixing ring (323).

5. A circulating crystallizer for easy feeding as described in claim 1, characterized in that: The outer wall of the tube body (41) is slidably connected to the inner wall of the inner tube (32), the bottom surface of the inner ring (42) is movably abutting against the top surface of the fluororubber pad (33), the outer wall of the locking block (43) is engaged with the inner wall of the locking groove (311), and the inner wall of the outer ring (44) is slidably connected to the outer wall of the sleeve (31).

6. A circulating crystallizer for easy feeding as described in claim 1, characterized in that: The outer wall of the scraper (53) is in contact with the inner wall of the tank (1).

Images