Triple-effect evaporative crystallization device for zinc sulfate

Abstract

The utility model provides a triple-effect evaporative crystallization device for zinc sulfate, which belongs to the technical field of concentration crystallization and comprises a stirring tank and an evaporating tank, a feeding box for adding secondary zinc oxide and zinc oxide is mounted at the top of the stirring tank, and a feeding hole is formed in the top of the stirring tank; a feeding pipeline for adding concentrated sulfuric acid is fixedly arranged at the top of the stirring tank, and the feeding box corresponds to the feeding hole up and down; a baffle is fixedly arranged at the top of the feeding box; secondary zinc oxide and zinc oxide are put into the feeding box, the driving device drives the rotating shaft to rotate, the rotating shaft drives the material mixing plate to rotate, the secondary zinc oxide and the zinc oxide are mixed together through the material mixing plate, the mixture of the secondary zinc oxide and the zinc oxide is brought into the stirring tank after mixing, and the initial reaction amount of zinc sulfate production can be controlled; the problem of non-uniform stirring caused by excessive zinc sulfate is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of concentrated crystallization, and in particular relates to a triple-effect evaporation crystallization device for zinc sulfate. Background Art

[0002] Zinc sulfate is an inorganic compound in the form of colorless orthorhombic crystals or white crystals, granules or powder. It is a natural mineral resource. In industrial manufacturing, zinc sulfate is the main raw material for producing zinc barium white and zinc salts. It can also be used as a printing and dyeing mordant, a wood and leather preservative, and an important auxiliary raw material for the production of viscose and vinylon fibers. In addition, it is also used in the electroplating and electrolytic industries, and can also be used to manufacture cables. Its application field is very wide. At the same time, in the production and preparation process of zinc sulfate, it also needs to undergo evaporation, crystallization, drying and other process flows to turn it into crystalline zinc sulfate crystals, thereby expanding its application field. However, with the continuous development and progress of society, the equipment used for evaporation, crystallization and drying of zinc sulfate also needs to be improved and upgraded to adapt to changes in the zinc sulfate production process.

[0003] The existing zinc sulfate evaporation and crystallization equipment cannot adjust the initial reaction volume of zinc sulfate production, resulting in excessive zinc sulfate and uneven stirring, which increases the burden of the equipment in the evaporation, crystallization and drying process, and is also not convenient for controlling the quality of the zinc sulfate product. Utility Model Content

[0004] The utility model aims to provide a triple-effect evaporation crystallization device for zinc sulfate, aiming to solve the problem that the initial reaction amount of zinc sulfate production cannot be adjusted in the prior art, resulting in excessive zinc sulfate and uneven stirring.

[0005] To achieve the above object, the utility model provides the following technical solution: a three-effect evaporation crystallization device of zinc sulfate, comprising: a stirring tank and an evaporation tank, a feeding box for adding zinc oxide and zinc oxide is installed on the top of the stirring tank, a feeding port is opened on the top of the stirring tank, a feeding pipeline for adding concentrated sulfuric acid is fixedly provided on the top of the stirring tank, and the feeding box corresponds to the feeding port up and down;

[0006] A baffle is fixedly provided on the top of the feed box, which is used to divide the top of the feed box into two chambers. A rotating shaft is provided at intervals on the left and right inside the feed box, and the front and rear ends of the rotating shaft abut against the inner wall of the feed box. A mixing plate is provided in a circular array on the rotating shaft.

[0007] The mixing plate can slide against the inner wall of the feed box when rotating, and a group of opposite ends of the mixing plates on the left and right rotating shafts can abut against each other to close the lower opening of the feed box when rotating. A driving device is provided on the feed box, and the driving device is connected to the rotating shaft, and the driving device is used to drive the rotating shaft to rotate;

[0008] A stirring mechanism is provided at the bottom of the stirring tank, and the stirring mechanism is used to stir the materials;

[0009] A connecting pipe is provided at the bottom of the stirring tank, and the stirring tank is connected to an evaporation tank through the connecting pipe. The evaporation tank is used to evaporate and crystallize the stirred solution. A water pump is provided on the connecting pipe.

[0010] As a preferred embodiment of the utility model, the driving device includes a first driving motor fixedly mounted on a feed box, an output end of the first driving motor is fixedly connected to one of the rotating shafts, a transmission mechanism is provided on the feed box, and one of the rotating shafts can drive the other rotating shaft to rotate in the opposite direction through the transmission mechanism.

[0011] As a preferred embodiment of the utility model, the transmission mechanism includes a driving gear and a driven gear rotatably arranged on the feed box, the driving gear is fixedly connected to one of the rotating shafts, the driven gear is fixedly connected to the other rotating shaft, and the driving gear and the driven gear are meshed with each other.

[0012] As a preferred embodiment of the utility model, the stirring mechanism includes a stirring shaft rotatably arranged at the bottom of the stirring tank, a plurality of stirring rods are arranged in a circumferential array on the stirring shaft, a second drive motor is fixedly installed at the bottom of the stirring tank, and an output end of the second drive motor is fixedly connected to the stirring shaft.

[0013] As a preferred embodiment of the utility model, at least two heating chambers are provided on the inner wall of the evaporator, a heating device is provided inside the heating chamber, and the heating device is used to heat the inside of the evaporator, an air outlet pipe is provided on the top of the evaporator, and a box door is provided on the outer wall of the evaporator.

[0014] As a preferred embodiment of the present invention, the materials used for the stirring shaft and the stirring rod are both acid-resistant and alkali-resistant materials.

[0015] As a preferred embodiment of the present invention, the heating device is a heating rod arranged inside the heating chamber.

[0016] As a preferred embodiment of the utility model, a first filter plate and a second filter plate are fixedly provided inside the evaporation tank, a gap is left between the first filter plate and the second filter plate, the inner diameter of the filter hole on the first filter plate is larger than the inner diameter of the filter hole on the second filter plate, and the first filter plate and the second filter plate are used to filter crystals in the solution;

[0017] A circulation mechanism is provided on the outer wall of the evaporation tank, and the circulation mechanism is connected to the inside of the evaporation tank. The circulation mechanism is used to drive the solution in the evaporation tank to circulate back and forth.

[0018] As a preferred embodiment of the utility model, the circulation mechanism includes a circulation pipe arranged on the evaporation tank, one end of the circulation pipe is connected to the bottom of the evaporation tank, and the other end of the circulation pipe is connected to the top of the evaporation tank. A circulation pump is provided on the top of the evaporation tank, and the circulation pump is connected to the circulation pipe.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The triple-effect evaporation crystallization device of zinc sulfate puts zinc oxide and zinc oxide into a feed box, a driving device drives a rotating shaft to rotate, the rotating shaft drives a mixing plate to rotate, the mixing plate mixes the zinc oxide and zinc oxide together, and after mixing, the mixture of zinc oxide and zinc oxide is brought into a stirring tank, which can control the initial reaction amount of zinc sulfate production and prevent excessive zinc sulfate from causing uneven stirring.

[0021] 2. The zinc sulfate triple-effect evaporation crystallization device can transport the stirred solution to the evaporation tank through the connecting pipe, and the circulation mechanism can drive the solution to circulate up and down inside the evaporation tank, thereby accelerating the evaporation efficiency of the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a front view of a specific embodiment of the utility model;

[0024] Figure 2 It is a side view of a specific embodiment of the utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0026] In the figure: 10, stirring tank; 11, feed box; 12, baffle; 20, evaporation tank; 21, rotating shaft; 22, mixing plate; 23, driving gear; 24, driven gear; 25, stirring shaft; 26, stirring rod; 31, first filter plate; 32, second filter plate; 33, circulation pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] See also Figure 1-3 The utility model provides the following technical solutions: a three-effect evaporation crystallization device of zinc sulfate, comprising: a stirring tank 10 and an evaporation tank 20, a feeding box 11 for adding zinc oxide and zinc oxide is installed on the top of the stirring tank 10, a feeding port is opened on the top of the stirring tank 10, and the feeding box 11 corresponds to the feeding port up and down.

[0029] A baffle 12 is fixedly provided on the top of the feed box 11, and the baffle 12 is used to divide the top of the feed box 11 into two chambers. The secondary zinc oxide and zinc oxide are respectively placed in the two chambers. Rotating shafts 21 are spaced apart on the left and right sides of the feed box 11. The front and rear ends of the rotating shaft 21 are in contact with the inner wall of the feed box 11, and a mixing plate 22 is arranged in a circular array on the rotating shaft 21.

[0030] The mixing plates 22 can slide against the inner wall of the feed box 11 when rotating, and a group of opposite ends of the mixing plates 22 on the left and right rotating shafts 21 can abut against each other to close the lower opening of the feed box 11 when rotating.

[0031] When the rotating shaft 21 rotates, it can drive the mixing plate 22 to rotate. The two groups of mixing plates 22 rotate in opposite directions at the same time, so as to mix the secondary zinc oxide and zinc oxide together. After mixing, the mixture of secondary zinc oxide and zinc oxide is pushed into the mixing tank 10 under the action of the mixing plates 22.

[0032] A driving device is provided on the feed box 11, and the driving device is connected to the rotating shaft 21. The driving device is used to drive the rotating shaft 21 to rotate. The driving device includes a first driving motor fixedly mounted on the feed box 11, and the output end of the first driving motor is fixedly connected to one of the rotating shafts 21. The first driving motor can drive one of the rotating shafts 21 to rotate.

[0033] See also Figure 1 and 3 A transmission mechanism is provided on the feed box 11, in which one rotating shaft 21 can drive the other rotating shaft 21 to rotate in the opposite direction through the transmission mechanism. The transmission mechanism includes a driving gear 23 and a driven gear 24 rotatably provided on the feed box 11. The driving gear 23 is fixedly connected to one of the rotating shafts 21, and the driven gear 24 is fixedly connected to the other rotating shaft 21. The driving gear 23 and the driven gear 24 are meshed with each other.

[0034] The first driving motor drives one of the rotating shafts 21 to rotate, one of the rotating shafts 21 drives the driving gear 23 to rotate, the driving gear 23 drives the driven gear 24 to rotate, and the driven gear 24 drives the other rotating shaft 21 to rotate, so that the two rotating shafts 21 can simultaneously drive the two groups of mixing plates 22 to rotate relative to each other.

[0035] A feed pipe for adding concentrated sulfuric acid is fixedly provided on the top of the stirring tank 10, and concentrated sulfuric acid can be introduced into the stirring tank 10 through the feed pipe. A stirring mechanism is provided at the bottom of the stirring tank 10, and the stirring mechanism is used to stir the material.

[0036] Please continue reading Figure 1 and 3 The stirring mechanism includes a stirring shaft 25 rotatably arranged at the bottom of the stirring tank 10 , and a plurality of stirring rods 26 are arranged in an annular array on the stirring shaft 25 . A second driving motor is fixedly installed at the bottom of the stirring tank 10 , and an output end of the second driving motor is fixedly connected to the stirring shaft 25 .

[0037] The second driving motor drives the stirring shaft 25 to rotate, and the stirring shaft 25 drives the stirring rod 26 to rotate. The stirring rod 26 stirs the mixture of zinc oxide and zinc oxide and concentrated sulfuric acid in the stirring tank 10. The materials used for the stirring shaft 25 and the stirring rod 26 are both acid-resistant and alkali-resistant materials.

[0038] A connecting pipe is provided at the bottom of the stirring tank 10, and the stirring tank 10 is connected to the evaporation tank 20 through the connecting pipe. The evaporation tank 20 is used to evaporate and crystallize the stirred solution. A water pump is provided on the connecting pipe, and the water pump can transport the solution inside the stirring tank 10 to the inside of the evaporation tank 20.

[0039] See also Figure 1-3 At least two heating chambers are provided on the inner wall of the evaporation tank 20, a heating device is provided inside the heating chamber, and the heating device is used to heat the inside of the evaporation tank 20. An air outlet pipe is provided on the top of the evaporation tank 20, and the gas generated by evaporation can be taken out of the evaporation tank 20 through the air outlet pipe. A box door is provided on the outer wall of the evaporation tank 20. After the evaporation is completed, the box door is opened to obtain the zinc sulfate product. The heating device is a heating rod provided inside the heating chamber.

[0040] A circulation mechanism is provided on the outer wall of the evaporation tank 20, and the circulation mechanism is connected to the inside of the evaporation tank 20. The circulation mechanism is used to drive the solution in the evaporation tank 20 to circulate back and forth. The circulation mechanism includes a circulation pipe 33 provided on the evaporation tank 20, one end of the circulation pipe 33 is connected to the bottom of the evaporation tank 20, and the other end of the circulation pipe 33 is connected to the top of the evaporation tank 20. A circulation pump is provided on the top of the evaporation tank 20, and the circulation pump is connected to the circulation pipe 33.

[0041] The circulation pump can drive the solution in the evaporation tank 20 to circulate through the circulation pipe 33, so as to accelerate the evaporation efficiency of the solution in the evaporation tank 20. The first filter plate 31 and the second filter plate 32 are fixedly provided inside the evaporation tank 20. A gap is left between the first filter plate 31 and the second filter plate 32. The inner diameter of the filter hole on the first filter plate 31 is larger than the inner diameter of the filter hole on the second filter plate 32. The first filter plate 31 and the second filter plate 32 are used to filter crystals in the solution. The first filter plate 31 and the second filter plate 32 can filter out the crystals in the solution to prevent the crystals and the solution from circulating back and forth inside the evaporation tank 20.

[0042] See also Figure 1-3 Working principle: zinc oxide and zinc oxide are put into the feed box 11, the driving device drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the mixing plate 22 to rotate, the mixing plate 22 mixes the zinc oxide and zinc oxide together, and at the same time brings the mixture of zinc oxide and zinc oxide into the stirring tank 10, and adds concentrated sulfuric acid into the stirring tank 10 through the feed pipe, which can control the initial reaction amount of zinc sulfate production and prevent the problem of excessive zinc sulfate and uneven stirring.

[0043] The stirring mechanism stirs the concentrated sulfuric acid and the mixture of zinc suboxide and zinc oxide, the water pump transports the stirred solution to the inside of the evaporation tank 20 through the connecting pipe, the heating rod heats the inside of the evaporation tank 20, and the circulation mechanism circulates the solution in the evaporation tank 20 up and down, thereby improving the evaporation efficiency.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A triple-effect evaporation crystallization device for zinc sulfate, characterized in that: include: A stirring tank (10) and an evaporation tank (20), wherein a feed box (11) for adding zinc oxide and zinc oxide is installed on the top of the stirring tank (10), a feed port is opened on the top of the stirring tank (10), a feed pipe for adding concentrated sulfuric acid is fixedly provided on the top of the stirring tank (10), and the feed box (11) corresponds to the feed port in upper and lower positions; A baffle (12) is fixedly provided on the top of the feed box (11), and the baffle (12) is used to divide the top of the feed box (11) into two chambers. A rotating shaft (21) is provided inside the feed box (11) at intervals on the left and right sides, and the front and rear ends of the rotating shaft (21) are in contact with the inner wall of the feed box (11). A mixing plate (22) is provided in an annular array on the rotating shaft (21); The mixing plates (22) can slide against the inner wall of the feed box (11) when rotating, and a group of opposite ends of the mixing plates (22) on the left and right rotating shafts (21) can abut against each other to close the lower opening of the feed box (11) when rotating. The feed box (11) is provided with a driving device, which is connected to the rotating shaft (21) and is used to drive the rotating shaft (21) to rotate. A stirring mechanism is provided at the bottom of the stirring tank (10), and the stirring mechanism is used to stir the material; A connecting pipe is provided at the bottom of the stirring tank (10). The stirring tank (10) is connected to the evaporation tank (20) via the connecting pipe. The evaporation tank (20) is used to evaporate and crystallize the stirred solution. A water pump is provided on the connecting pipe.

2. A triple-effect evaporation crystallization device for zinc sulfate according to claim 1, characterized in that: The driving device comprises a first driving motor fixedly mounted on the feed box (11), wherein an output end of the first driving motor is fixedly connected to one of the rotating shafts (21), and a transmission mechanism is provided on the feed box (11), wherein one of the rotating shafts (21) can drive the other rotating shaft (21) to rotate in the opposite direction through the transmission mechanism.

3. A triple-effect evaporation crystallization device for zinc sulfate according to claim 2, characterized in that: The transmission mechanism comprises a driving gear (23) and a driven gear (24) rotatably arranged on the feed box (11); the driving gear (23) is fixedly connected to one of the rotating shafts (21); the driven gear (24) is fixedly connected to the other rotating shaft (21); and the driving gear (23) and the driven gear (24) are meshed with each other.

4. A triple-effect evaporation crystallization device for zinc sulfate according to claim 1, characterized in that: The stirring mechanism comprises a stirring shaft (25) rotatably arranged at the bottom of the stirring tank (10), a plurality of stirring rods (26) being arranged in a circumferential array on the stirring shaft (25), a second drive motor being fixedly mounted at the bottom of the stirring tank (10), and an output end of the second drive motor being fixedly connected to the stirring shaft (25).

5. A triple-effect evaporation crystallization device for zinc sulfate according to claim 1, characterized in that: At least two heating chambers are provided on the inner wall of the evaporation tank (20), a heating device is provided inside the heating chamber, and the heating device is used to heat the inside of the evaporation tank (20), an air outlet pipe is provided on the top of the evaporation tank (20), and a box door is provided on the outer wall of the evaporation tank (20).

6. A triple-effect evaporation crystallization device for zinc sulfate according to claim 4, characterized in that: The materials used for the stirring shaft (25) and the stirring rod (26) are both acid-resistant and alkali-resistant materials.

7. A triple-effect evaporation crystallization device for zinc sulfate according to claim 5, characterized in that: The heating device is a heating rod arranged inside the heating chamber.

8. A triple-effect evaporation crystallization device for zinc sulfate according to claim 1, characterized in that: A first filter plate (31) and a second filter plate (32) are fixedly disposed inside the evaporation tank (20), a gap being left between the first filter plate (31) and the second filter plate (32), the inner diameter of the filter holes on the first filter plate (31) being larger than the inner diameter of the filter holes on the second filter plate (32), and the first filter plate (31) and the second filter plate (32) being used to filter crystals in the solution; A circulation mechanism is provided on the outer wall of the evaporation tank (20), the circulation mechanism is connected to the inside of the evaporation tank (20), and the circulation mechanism is used to drive the solution in the evaporation tank (20) to circulate back and forth.

9. A triple-effect evaporation crystallization device for zinc sulfate according to claim 8, characterized in that: The circulation mechanism comprises a circulation pipe (33) provided on the evaporation tank (20), one end of the circulation pipe (33) being connected to the bottom of the evaporation tank (20), and the other end of the circulation pipe (33) being connected to the top of the evaporation tank (20), and a circulation pump being provided on the top of the evaporation tank (20), and the circulation pump being connected to the circulation pipe (33).

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