A crystallization tank

Abstract

The utility model discloses a kind of crystallization tanks, comprising: shell, cavity, liquid inlet, liquid outlet, a pair of bracket and transmission assembly. Inner container is fixed in shell, multiple stirring tubes are evenly installed on the inner wall of inner container. Cavity is located between shell and inner container, and cooling medium is circulated in cavity. Liquid inlet and liquid outlet are fixed at the both ends of shell respectively, and are communicated with cavity. A pair of bracket is respectively arranged at liquid inlet and liquid outlet, and is rotatably arranged between liquid inlet and liquid outlet. Transmission assembly is installed between bracket and shell, for driving shell to rotate, cavity includes: baffle and cooling zone, the baffle is separated into multiple cooling zones, the inside of stirring tube is hollow pipe, and every adjacent two cooling zones are communicated by stirring tube. The utility model is designed by coherence structure, effectively stirs solution in crystallization process, improves the flow effect of solution, and improves heat exchange efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of crystallization cell technology, and specifically relates to a crystallization cell. Background Technology

[0002] Crystallization tanks are core equipment in chemical production for achieving solution crystallization. They are mainly used to induce crystal precipitation from solutes through a controlled supersaturation state. The performance of the crystallization tank directly determines the purity, particle size, and production efficiency of the crystal product. Technological advancements in crystallization tanks will continue to drive material upgrades in fields such as new energy and pharmaceuticals.

[0003] Chinese patent CN219376116U discloses a lithium hexafluorophosphate crystallization tank, including an outer cylinder and an inner cylinder. An inlet is located at the center of the top surface of both the outer and inner cylinders, and an outlet is located on one side of the bottom of both. The tank features an internal condenser tube inside the inner cylinder and a hollow structure between the outer and inner cylinders. Coolant circulates between the outer and inner cylinders via a coolant inlet and outlet, overcoming the shortcomings of existing lithium hexafluorophosphate crystallization tanks, such as slow cooling and excessively long crystallization time.

[0004] However, this device guides the lithium hexafluorophosphate solution through a material distribution plate, but it cannot stir the solution that has already entered the cylinder. Therefore, the crystallization of lithium hexafluorophosphate solution in this device is relatively static. Static crystallization may cause the crystals to form large clumps, which are not only difficult to handle, but may also affect product quality.

[0005] Therefore, it is necessary to provide a crystallization cell to address the aforementioned technical problems.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a crystallization tank that can solve the problem that existing crystallization tanks lack stirring of the solution, resulting in the formation of large lumps of static crystallized crystals.

[0008] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0009] A crystallization tank includes: a shell, a cavity, an inlet, an outlet, a pair of supports, and a transmission assembly. An inner liner is fixed inside the shell, and multiple stirring tubes are evenly installed on the inner wall of the inner liner. The cavity is located between the shell and the inner liner, and a cooling medium flows through the cavity. The inlet and outlet are fixed to both ends of the shell and communicate with the cavity. The pair of supports are respectively located at the inlet and outlet and are rotatably configured to rotate between them. The transmission assembly is installed between the supports and the shell and is used to drive the shell to rotate.

[0010] In one embodiment of the present invention, a sliding bearing is installed between the pair of brackets and the inlet and outlet, and the brackets are slidably connected to the inlet and outlet via the sliding bearings.

[0011] In one embodiment of the present invention, the cavity includes a partition and a cooling zone. The partition divides the cavity into multiple cooling zones. On the one hand, the partition is used to divide the cavity into multiple cooling zones, and on the other hand, it is fixed between the outer shell and the inner liner, providing a fixed support between the outer shell and the inner liner.

[0012] In one embodiment of this utility model, the stirring tube is a hollow pipe, and each pair of adjacent cooling zones is connected by the stirring tube. Multiple cooling zones are interconnected by the stirring tube, so that the inlet, cavity and outlet are in a connected state. The cooling medium enters the first cooling zone through the inlet, flows to the next cooling zone through the stirring tube, and finally flows out from the outlet. When the cooling medium flows through the stirring tube, the stirring tube stirs the solution in the inner tank, and the cooling medium also exchanges heat with the solution in the inner tank in the stirring tube, thereby increasing the heat exchange efficiency between the cooling medium and the solution in the inner tank.

[0013] In one embodiment of this utility model, a rotary joint is connected to both the liquid inlet and the liquid outlet. The liquid inlet and the liquid outlet are rotatably connected to the pipe of the external cooling medium through the rotary joint, thereby preventing the cooling medium pipe connected to the liquid inlet and the liquid outlet from getting tangled when the outer casing rotates.

[0014] In one embodiment of this utility model, the rotary joint is connected to both the inlet and outlet via flanges.

[0015] In one embodiment of this utility model, the transmission assembly includes: a transmission shaft, a first belt gear, and a second belt gear. The transmission shaft is rotatably mounted on a bracket. The first belt gear and the second belt gear are respectively installed on the transmission shaft and the outer casing near the transmission shaft, and the first belt gear and the second belt gear drive each other. When this device is in use, the transmission shaft needs an external drive device to rotate. The transmission shaft drives the second belt gear to rotate through the first belt gear, thereby rotating the outer casing. When the outer casing rotates, the solution in the inner liner is stirred through the stirring tube.

[0016] In one embodiment of the present invention, a belt is installed between the first belt gear and the second belt gear, and the first belt gear and the second belt gear drive each other through the belt.

[0017] In one embodiment of this utility model, the outer shell is fixed with an inlet and an outlet, and the inlet and outlet are connected to the inner liner. The solution to be crystallized is added into the inner liner from the inlet, and after crystallization is completed, it is discharged through the outlet.

[0018] In one embodiment of this utility model, control valves are installed on both the feed inlet and the discharge outlet to control the opening and closing of the feed inlet and the discharge outlet.

[0019] Compared with the prior art, this utility model effectively stirs the solution during the crystallization process through relevant structural design, thereby improving the flow effect of the solution and increasing the heat exchange efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a crystallization tank according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a crystallization cell in one embodiment of the present invention.

[0023] Explanation of key figure labels:

[0024] 1-Outer shell, 101-Inner liner, 102-Cavity, 103-Baffle, 104-Cooling zone, 105-Stirring tube, 106-Support, 107-Transmission assembly, 108-Drive shaft, 109-First belt gear, 110-Second belt gear, 111-Belt, 112-Inlet, 113-Outlet, 114-Liquid inlet, 115-Liquid outlet, 116-Rotary joint. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0026] like Figures 1 to 2 As shown, a crystallization tank according to one embodiment of the present invention includes: a shell 1, a cavity 102, a liquid inlet 114, a liquid outlet 115, a pair of supports 106, and a transmission assembly 107. An inner liner 101 is fixed inside the shell 1, and multiple stirring tubes 105 are evenly installed on the inner wall of the inner liner 101. The cavity 102 is located between the shell 1 and the inner liner 101, and a cooling medium flows through the cavity 102. The liquid inlet 114 and the liquid outlet 115 are respectively fixed to both ends of the shell 1 and communicate with the cavity 102. The pair of supports 106 are respectively located at the liquid inlet 114 and the liquid outlet 115, and are rotatably arranged between the liquid inlet 114 and the liquid outlet 115. The transmission assembly 107 is installed between the supports 106 and the shell 1, and is used to drive the shell 1 to rotate.

[0027] In use, the solution to be crystallized is added to the inner liner 101. Then, the inlet 114 and outlet 115 are connected to the cooling medium flow pipe, allowing the cooling medium to flow from the inlet 114 into the cavity 102 and out of the outlet 115, thus exchanging heat between the cooling medium in the cavity 102 and the solution in the inner liner 101. Additionally, the transmission assembly 107 drives the outer shell 1 to rotate. During this rotation, the stirring tube 105 stirs the solution in the inner liner 101, thereby crystallizing the solution within the inner liner 101.

[0028] like Figures 1 to 2As shown, a pair of brackets 106 are each equipped with sliding bearings between the inlet 114 and the outlet 115, and the brackets 106 are slidably connected to the inlet 114 and the outlet 115 via the sliding bearings. The cavity 102 includes a partition 103 and a cooling zone 104. The partition 103 divides the cavity 102 into multiple cooling zones 104. The partition 103 serves two purposes: firstly, it divides the cavity 102 into multiple cooling zones 104; secondly, it is fixed between the outer shell 1 and the inner liner 101, providing a fixed support between the outer shell 1 and the inner liner 101.

[0029] like Figures 1 to 2 As shown, the stirring tube 105 is a hollow pipe, and each pair of adjacent cooling zones 104 is connected by the stirring tube 105. Multiple cooling zones 104 are interconnected by the stirring tube 105, so that the inlet 114, the cavity 102 and the outlet 115 are in a connected state. The cooling medium enters the first cooling zone 104 through the inlet 114 and flows to the next cooling zone 104 through the stirring tube 105. Finally, it flows out from the outlet 115. When the cooling medium flows through the stirring tube 105, the stirring tube 105 stirs the solution in the inner tank 101, and the cooling medium also exchanges heat with the solution in the inner tank 101 in the stirring tube 105, thereby increasing the heat exchange efficiency between the cooling medium and the solution in the inner tank 101.

[0030] like Figures 1 to 2 As shown, both the inlet 114 and the outlet 115 are connected to a rotary joint 116. The inlet 114 and the outlet 115 are rotatably connected to the external cooling medium pipes through the rotary joints 116, thereby preventing the cooling medium pipes connected to the inlet 114 and the outlet 115 from becoming entangled when the outer casing 1 rotates. The rotary joint 116 is connected to both the inlet 114 and the outlet 115 via flanges.

[0031] like Figures 1 to 2 As shown, the transmission assembly 107 includes a transmission shaft 108, a first belt gear 109, and a second belt gear 110. The transmission shaft 108 is rotatably mounted on the bracket 106. The first belt gear 109 and the second belt gear 110 are respectively mounted on the transmission shaft 108 and the end of the outer casing 1 closest to the transmission shaft 108, and the first belt gear 109 and the second belt gear 110 drive each other. When this device is in use, the transmission shaft 108 requires an external drive device to rotate. The transmission shaft 108 drives the second belt gear 110 to rotate via the first belt gear 109, thereby causing the outer casing 1 to rotate. When the outer casing 1 rotates, the solution inside the inner liner 101 is stirred through the stirring tube 105.

[0032] like Figures 1 to 2As shown, a belt 111 is installed between the first belt gear 109 and the second belt gear 110, and the first belt gear 109 and the second belt gear 110 are mutually driven by the belt 111. An inlet 112 and an outlet 113 are fixed on the outer casing 1, and the inlet 112 and outlet 113 are connected to the inner liner 101. The solution to be crystallized is added to the inner liner 101 through the inlet 112, and after crystallization, it is discharged through the outlet 113. Control valves are installed on both the inlet 112 and the outlet 113 to control the opening and closing of the inlet 112 and outlet 113.

[0033] Working principle: During use, the solution to be crystallized is added into the inner liner 101 through the inlet 112. Then, the inlet 114 and outlet 115 are connected to the external cooling medium through the rotary joint 116. The cooling medium enters the first cooling zone 104 through the inlet 114 and flows to the next cooling zone 104 through the stirring tube 105. Finally, it flows out from the outlet 115, so that the cooling medium in the cooling zone 104 and the stirring tube 105 exchanges heat with the solution in the inner liner 101.

[0034] Subsequently, the drive device connected to the drive shaft 108 drives it to rotate. The drive shaft 108 drives the first belt gear 109 to rotate. The first belt gear 109 drives the second belt gear 110 to rotate through the belt 111, thereby causing the outer shell 1 to rotate. When the outer shell 1 rotates, the solution in the inner liner 101 is stirred through the stirring tube 105, thereby crystallizing the solution in the inner liner 101.

[0035] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crystallization tank, characterized in that, include: The outer shell has an inner liner fixed inside it, and multiple stirring tubes are evenly installed on the inner wall of the inner liner; A cavity is located between the outer shell and the inner liner, and a cooling medium flows through the cavity; The liquid inlet and liquid outlet are fixed to both ends of the outer shell and are connected to the cavity; A pair of brackets are respectively located at the inlet and outlet of the liquid, and are rotatably configured between the inlet and outlet of the liquid; and The transmission component, installed between the bracket and the housing, is used to drive the housing to rotate.

2. The crystallization tank according to claim 1, characterized in that, Each of the aforementioned brackets is equipped with a sliding bearing between the inlet and outlet.

3. A crystallization tank according to claim 1, characterized in that, The cavity includes a partition and a cooling zone, wherein the partition divides the cavity into multiple cooling zones.

4. A crystallization tank according to claim 3, characterized in that, The stirring tube is a hollow pipe, and every two adjacent cooling zones are connected by the stirring tube.

5. A crystallization tank according to claim 1, characterized in that, Rotary joints are connected to both the inlet and outlet.

6. A crystallization tank according to claim 5, characterized in that, The rotary joint is connected to both the inlet and outlet via flanges.

7. A crystallization tank according to claim 1, characterized in that, The transmission assembly includes: The drive shaft is rotatably mounted on the bracket. The first belt gear and the second belt gear are respectively installed on the drive shaft and the housing at the end near the drive shaft, and the first belt gear and the second belt gear drive each other.

8. A crystallization tank according to claim 7, characterized in that, A belt is installed between the first belt gear and the second belt gear, and the first belt gear and the second belt gear drive each other through the belt.

9. A crystallization tank according to claim 1, characterized in that, The outer shell is fixed with a feed inlet and a discharge outlet, and the feed inlet and discharge outlet are connected to the inner liner.

10. A crystallization tank according to claim 9, characterized in that, Control valves are installed on both the inlet and outlet.

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