Regenerated nickel sulfate crystallization device

Abstract

The utility model relates to the field of nickel sulfate crystallization, in particular to a regenerated nickel sulfate crystallization device which comprises a crystallization barrel, supporting legs and a discharging pipe are arranged on a bottom plate of the crystallization barrel, a stirring mechanism and a feeding pipe are arranged on a top plate of the crystallization barrel, a cooling pipe is wound on the side wall of the crystallization barrel from top to bottom, and the upper end and the lower end of the cooling pipe are communicated with a cooling box. The cooling box is fixed on the supporting frame, the supporting frame is fixed on the supporting legs, and the outside of the crystallization barrel is wrapped with a heat preservation sleeve. The nickel sulfate solution is comprehensively and fully cooled through the arrangement of the stirring mechanism, and the repeated utilization of the cooling liquid is realized through the arrangement of the cooling box, so that resources are saved; and the crystallization barrel is well protected by winding the cooling pipe on the side wall of the crystallization barrel, a good heat preservation effect is achieved through the arrangement of the heat preservation sleeve, heat exchange between the external environment and the cooling liquid in the process that the cooling liquid flows through the cooling pipe is prevented, and therefore the cooling effect on the nickel sulfate solution is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of nickel sulfate crystallization, in particular to a regenerated nickel sulfate crystallization device. Background Art

[0002] Nickel sulfate is a basic material for making power batteries. In the process of nickel sulfate preparation, nickel sulfate solution needs to be converted into nickel sulfate crystals. In this process, the nickel sulfate solution needs to be heated and evaporated to concentrate the nickel sulfate solution, and then the concentrated solution is cooled and crystallized, and finally separated and dried. In the whole process, the cooling crystallization step is very important. This step directly determines the effect of crystallization, and crystallization requires the use of crystallization equipment. The patent with application number CN202220848466.7 discloses a mixed flow cooling crystallization equipment for nickel sulfate and magnesium sulfate, but the cooling crystallization equipment still has the following disadvantages: 1) The cooling crystallization equipment arranges a lifting screw, an outer double spiral belt and an anchor frame propeller on the periphery of the stirring shaft. Although it can 1) The cooling crystallization equipment cools the nickel sulfate solution by passing the coolant through the gap between the inner cylinder and the outer cylinder, but this method has a relatively poor insulation effect on the coolant in the gap, especially when the outside temperature is very high, the cooling effect is extremely poor, and the coolant is in direct contact with the outer wall of the inner cylinder and the inner wall of the outer cylinder, which can easily cause corrosion damage to the inner cylinder and the outer cylinder; 3) The coolant of the cooling equipment enters from the coolant inlet and finally goes out from the coolant outlet, which causes a huge waste of cooling water and is not conducive to resource conservation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a regenerated nickel sulfate crystallization device, which solves the problems existing in the prior art. The stirring mechanism of the nickel sulfate crystallization device not only has a good stirring effect, but also has a simple structure and will not affect the crystallization of nickel sulfate, but also improves the cooling effect of the nickel sulfate solution, and also plays a good protective role on the crystallization barrel. Finally, the crystallization device realizes the recycling of the coolant through the setting of the cooling box, which greatly saves resources.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a regenerated nickel sulfate crystallization device, comprising a crystallization barrel, the bottom plate of the crystallization barrel is provided with support legs and a feed pipe, the top plate thereof is provided with a stirring mechanism and a feed pipe, the side wall of the crystallization barrel is wound with a cooling pipe from top to bottom, the upper and lower ends of the cooling pipe are connected to a cooling box, the cooling box is fixed on a support frame, the support frame is fixed on the support legs, and the outside of the crystallization barrel is wrapped with an insulation sleeve.

[0007] Preferably, the stirring mechanism includes a motor fixed on the top plate, a stirring rod is fixed on the rotating shaft of the motor, a plurality of stirring paddles are fixed near the lower end of the stirring rod, the stirring paddles are arranged in a sleeve that passes through the top and bottom, the lower end of the fixed rod is fixed on the top edge of the sleeve, and the upper end of the fixed rod is fixed on the top plate.

[0008] Preferably, the diameter of the sleeve gradually decreases from both ends to the middle.

[0009] Preferably, the cooling box includes a box body, a liquid pipe is provided in the box body, the upper end of the liquid pipe is connected to the liquid inlet end of the cooling pipe through a first connecting pipe, the lower end is connected to a second connecting pipe, the second connecting pipe is connected to a liquid pump, the liquid pump is connected to the liquid outlet end of the cooling pipe, and the liquid pump is fixed on the support frame.

[0010] Preferably, the liquid passage pipe is configured to be curved.

[0011] Preferably, a plurality of baffles are fixed on the inner wall of the liquid passage pipe, and adjacent baffles are staggered up and down.

[0012] Preferably, the end of the discharge pipe is detachably connected to a cover body.

[0013] Preferably, the height of the inner bottom surface of the bottom plate gradually decreases from the outside to the lower material pipe.

[0014] (III) Beneficial effects

[0015] 1. The utility model fully and comprehensively cools the nickel sulfate solution by setting a stirring mechanism, and reuses the cooling liquid by setting a cooling box, saving resources. Moreover, the cooling liquid does not directly contact the crystallization barrel by winding a cooling tube around the side wall of the crystallization barrel, thus well protecting the crystallization barrel. The setting of the insulation sleeve plays a good heat preservation role, preventing the external environment from exchanging heat with the cooling liquid during the process of the cooling liquid flowing through the cooling tube, and is well isolated from the external environment, thereby greatly improving the cooling effect of the nickel sulfate solution;

[0016] 2. The utility model sets the stirring mechanism to be composed of a motor, a stirring rod, a sleeve, a stirring paddle arranged in the sleeve and a fixed rod. During the stirring process, the nickel sulfate solution will form Figure 8The water flow motion state shown in the figure can fully and comprehensively mix the nickel sulfate solution in the crystallization barrel, so that the nickel sulfate solution is evenly cooled, and finally the effect of nickel sulfate crystallization is improved. In addition, the stirring mechanism in the nickel sulfate solution only includes a stirring rod, a sleeve, a stirring paddle arranged in the sleeve, and a fixed rod. Compared with the stirring structure in the background technology, this structure greatly reduces the influence on the crystallization process, and it is not easy for nickel sulfate crystals to adhere thereto, thereby improving the final crystallization effect.

[0017] 3. The utility model sets the sleeve to have a structure with large ends and small middle, so that the flow rate of the nickel sulfate solution can be increased when it passes through the middle part of the sleeve, thereby improving the overall convection intensity and enhancing the mixing effect;

[0018] 4. The utility model sets the liquid passage pipe to be curved, and fixes a plurality of baffles on the inner wall of the liquid passage pipe, which greatly increases the distance and time for the cooling liquid to pass through the cooling box, thereby achieving a better cooling effect on the cooling liquid entering the cooling box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the crystallization barrel, cooling pipe, insulation sleeve, feeding pipe, feeding pipe and stirring mechanism of the utility model.

[0021] Figure 3 It is a cross-sectional view of the crystallization barrel, stirring mechanism, feeding pipe and feeding pipe of the utility model.

[0022] Figure 4 It is a schematic diagram of the motor, stirring rod and stirring paddle of the utility model.

[0023] Figure 5 It is a schematic diagram of the sleeve and the fixing rod of the utility model.

[0024] Figure 6 It is a schematic diagram of a cooling box of the utility model.

[0025] Figure 7 It is a schematic diagram of the liquid passing pipe and the baffle plate therein of the utility model.

[0026] Figure 8 This is a schematic diagram of the liquid flow state in the crystallization barrel after the stirring mechanism of the utility model is started.

[0027] In the figure: 1-crystallization barrel, 2-bottom plate, 3-support leg, 4-discharging pipe, 5-top plate, 6-stirring mechanism, 7-feeding pipe, 8-cooling pipe, 9-cooling box, 10-support frame, 11-insulation sleeve, 12-motor, 13-stirring rod, 14-stirring paddle, 15-sleeve, 16-fixed rod, 17-box, 18-liquid pipe, 19-first connecting pipe, 20-liquid inlet end, 21-second connecting pipe, 22-liquid pump, 23-liquid outlet end, 24-baffle, 25-cover body, 26-inner bottom surface. DETAILED DESCRIPTION

[0028] The following will be combined with the attached embodiment of the utility model Figure 1-8 The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides a technical solution: a regenerated nickel sulfate crystallization device comprises a crystallization barrel 1, a bottom plate 2 of the crystallization barrel 1 is provided with a support leg 3 and a feed pipe 4, a top plate 5 thereof is provided with a stirring mechanism 6 and a feed pipe 7, a side wall of the crystallization barrel 1 is wound with a cooling pipe 8 from top to bottom, the upper end and the lower end of the cooling pipe 8 are connected with a cooling box 9, the cooling box 9 is fixed on a support frame 10, the support frame 10 is fixed on the support leg 3, the outside of the crystallization barrel 1 is wrapped with a heat preservation sleeve 11, when working, firstly, the concentrated nickel sulfate solution after being heated and evaporated enters the crystallization barrel 1 through the feed pipe 7, the stirring mechanism 6 is started to stir the nickel sulfate solution, so that the nickel sulfate solution is cooled evenly, and at the same time, the cooling liquid cooled by the cooling box 9 is discharged from the crystallization barrel 1. The upper end of the cooling tube 8 enters and finally comes out from the lower end of the cooling tube 8 to re-enter the cooling box 9 for cooling, and then re-enters the cooling tube 8 to cool the nickel sulfate solution, so that the reuse of the cooling liquid is realized, and resources are saved, and the cooling liquid is not directly in contact with the crystallization barrel 1 by winding the cooling tube 8 on the side wall of the crystallization barrel 1, so that the crystallization barrel 1 is well protected, wherein the setting of the insulation sleeve 11 plays a good heat preservation effect, and the external environment and the cooling liquid are prevented from exchanging heat (especially when the external environment temperature is high) in the process of the cooling liquid flowing through the cooling tube 8, and the external environment is well isolated, thereby greatly improving the cooling effect of the nickel sulfate solution. After the nickel sulfate solution completes crystallization, the solution containing the nickel sulfate crystals is separated and dried from the feed pipe 4 for subsequent separation.

[0030] The stirring mechanism 6 includes a motor 12 fixed on the top plate 5, a stirring rod 13 is fixed on the rotating shaft of the motor 12, and a plurality of stirring paddles 14 are fixed near the lower end of the stirring rod 13. The stirring paddles 14 are arranged in a sleeve 15 that passes through the top and bottom. The lower end of a fixing rod 16 is fixed on the top edge of the sleeve 15, and the upper end of the fixing rod 16 is fixed on the top plate 5. During the stirring process, the nickel sulfate solution will form a Figure 8 The water flow movement state shown in the figure can fully and comprehensively mix the nickel sulfate solution in the crystallization barrel 1, so that the nickel sulfate solution is evenly cooled, and finally the effect of nickel sulfate crystallization is improved. In addition, the stirring mechanism 6 in the nickel sulfate solution only includes the stirring rod 13, the sleeve 15, the stirring paddle 14 arranged in the sleeve 15 and the fixed rod 16. Compared with the stirring structure in the background technology, this structure greatly reduces the influence on the crystallization process, and it is not easy for nickel sulfate crystals to adhere thereto, thereby improving the final crystallization effect.

[0031] The diameter of the sleeve 15 gradually decreases from the two ends to the middle, wherein the sleeve 15 is set to a structure with large ends and small middle, so that the flow rate can be increased when the nickel sulfate solution passes through the middle part of the sleeve 15, thereby improving the overall convection strength and enhancing the mixing effect. The cooling box 9 includes a box body 17, and a liquid pipe 18 is arranged in the box body 17. The upper end of the liquid pipe 18 is connected to the liquid inlet end 20 of the cooling pipe 8 through the first connecting pipe 19, and the lower end thereof is connected to the second connecting pipe 21, and the second connecting pipe 21 is connected to a liquid pump 22, and the liquid pump 22 is connected to the liquid outlet end 23 of the cooling pipe 8. The liquid pump 22 is fixed on the support frame 10, wherein the liquid pipe 18, the first connecting pipe 19, the cooling pipe 8 and the second connecting pipe 21 form a closed loop, and the above closed loop is filled with cooling liquid, such as water, etc., wherein the liquid pump 22 provides power for the circulation of the cooling liquid, wherein the cooling liquid is cooled again after entering the cooling box 9, thereby realizing the reuse of the cooling liquid.

[0032] The liquid pipe 18 is arranged in a curved shape, which increases the distance and time for the cooling liquid to pass through the cooling box 9, thereby achieving a better cooling effect on the cooling liquid entering the cooling box 9. A plurality of baffles 24 are fixed on the inner wall of the liquid pipe 18, and the adjacent baffles 24 are staggered up and down. The arrangement of the staggered baffles 24 further increases the time for the cooling liquid to flow through the liquid pipe 18, thereby further increasing the cooling effect on the cooling liquid.

[0033] The end of the feed tube 4 is detachably connected to a cover body 25 , wherein the cover body 25 and the feed tube 4 may be threadedly connected, which facilitates installation and removal of the cover body 25 .

[0034] The height of the inner bottom surface 26 of the bottom plate 2 gradually decreases from the outside to the lower feed pipe 4. This arrangement has a good diversion effect, which facilitates the nickel sulfate crystals and solution that have finally completed crystallization to come out of the lower feed pipe 4, and there will be no nickel sulfate crystals remaining on the bottom plate 2.

[0035] Working principle: during operation, the concentrated nickel sulfate solution after heating and evaporation is firstly introduced into the crystallization barrel 1 through the feed pipe 7, and the stirring mechanism 6 is started to stir the nickel sulfate solution, so that the nickel sulfate solution is cooled evenly, and the cooling liquid after cooling through the cooling box 9 enters from the upper end of the cooling tube 8 and finally comes out from the lower end of the cooling tube 8 to re-enter the cooling box 9 for cooling, and then re-enters the cooling tube 8 to cool the nickel sulfate solution, so that the recycling of the cooling liquid is realized, and resources are saved, and the cooling liquid is not directly contacted with the crystallization barrel 1 by winding the cooling tube 8 on the side wall of the crystallization barrel 1, so that the crystallization barrel 1 is well protected, wherein the setting of the insulation sleeve 11 plays a good heat preservation effect, and the external environment and the cooling liquid are prevented from exchanging heat (especially when the external environment temperature is high) during the cooling liquid flowing through the cooling tube 8, and the external environment is well isolated, thereby greatly improving the cooling effect of the nickel sulfate solution. After the nickel sulfate solution completes crystallization, the solution containing the nickel sulfate crystals is taken out from the feed pipe 4 for subsequent separation and drying.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A regenerated nickel sulfate crystallization device, characterized in that: The invention comprises a crystallization barrel (1), wherein a bottom plate (2) of the crystallization barrel (1) is provided with support legs (3) and a feed pipe (4), a top plate (5) thereof is provided with a stirring mechanism (6) and a feed pipe (7), a cooling pipe (8) is wound around the side wall of the crystallization barrel (1) from top to bottom, the upper end and the lower end of the cooling pipe (8) are connected to a cooling box (9), the cooling box (9) is fixed on a support frame (10), the support frame (10) is fixed on the support legs (3), and the outside of the crystallization barrel (1) is wrapped with a heat preservation sleeve (11).

2. A regenerated nickel sulfate crystallization device according to claim 1, characterized in that: The stirring mechanism (6) comprises a motor (12) fixed on the top plate (5), a stirring rod (13) being fixed on the rotating shaft of the motor (12), a plurality of stirring paddles (14) being fixed near the lower end of the stirring rod (13), the stirring paddles (14) being arranged in a sleeve (15) penetrating from top to bottom, the lower end of a fixing rod (16) being fixed on the top edge of the sleeve (15), and the upper end of the fixing rod (16) being fixed on the top plate (5).

3. A regenerated nickel sulfate crystallization device according to claim 2, characterized in that: The diameter of the sleeve (15) gradually decreases from both ends to the middle.

4. A regenerated nickel sulfate crystallization device according to claim 1, characterized in that: The cooling box (9) comprises a box body (17), a liquid passing pipe (18) is arranged in the box body (17), the upper end of the liquid passing pipe (18) is connected to the liquid inlet end (20) of the cooling pipe (8) through a first connecting pipe (19), and the lower end is connected to a second connecting pipe (21), the second connecting pipe (21) is connected to a liquid pump (22), the liquid pump (22) is connected to the liquid outlet end (23) of the cooling pipe (8), and the liquid pump (22) is fixed on the support frame (10).

5. A regenerated nickel sulfate crystallization device according to claim 4, characterized in that: The liquid passage pipe (18) is configured to be curved.

6. A regenerated nickel sulfate crystallization device according to claim 4, characterized in that: A plurality of baffles (24) are fixed on the inner wall of the liquid passage pipe (18), and adjacent baffles (24) are arranged in an up-and-down staggered manner.

7. A regenerated nickel sulfate crystallization device according to claim 1, characterized in that: The end of the feed tube (4) is detachably connected to a cover body (25).

8. A regenerated nickel sulfate crystallization device according to claim 1, characterized in that: The height of the inner bottom surface (26) of the bottom plate (2) gradually decreases from the outside to the feed pipe (4).

Images