Waste residue crushing device for preparing zinc calcine from zinc-containing waste residues

Abstract

The utility model discloses a waste residue crushing device for preparing zinc calcine from zinc-containing waste residues, and relates to the technical field of zinc calcine production. The crushing device comprises a crushing box and a return pipe, a crushing motor is arranged on the outer side of the crushing box, crushing rollers penetrate through and are clamped to the two sides in the crushing box, the return pipe is arranged on one side of the crushing box, a screen penetrates through and is clamped to the peripheral surface of the return pipe, and a spiral conveying assembly penetrates through and is inserted into the top of the return pipe. By arranging the smashing box and the backflow pipe, the problems that after waste residues are difficult to smash by a smashing device, the waste residues with small particles are prone to escaping in the air in the screening process, and the production cost and expenditure are increased due to the fact that powder is continuously humidified through a spraying structure are solved; and the problems of powder backflow, screen cleaning and the like need to be considered, the structure of the device is complex, and the cost and maintenance expenditure are high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of zinc calcine production, and particularly relates to a waste residue crushing device for preparing zinc calcine from zinc-containing waste residue. Background Technique

[0002] Zinc calcine is the product obtained after roasting zinc concentrate, which is a brown microgranular solid, mainly containing zinc oxide, zinc sulfate, zinc sulfide, etc. It is the raw material for the production of direct-process zinc oxide, electrolytic zinc, electric furnace zinc powder, etc. During the production and processing of zinc calcine, in order to avoid environmental pollution caused by the discharge of zinc-containing waste residue, the zinc-containing waste residue is usually treated to extract zinc from the waste residue, and at the same time, the production volume of zinc calcine is increased. In order to improve the extraction efficiency of zinc-containing waste residue, a crushing device is usually used to crush the zinc-containing waste residue to increase the surface area of the zinc-containing waste residue, so that the treatment liquid can react quickly with the zinc-containing waste residue. However, it still has the following disadvantages in actual use:

[0003] The utility model with the publication number CN216459086U discloses an environment-friendly circulating crushing device for zinc calcine production. An outlet is opened at the bottom of one side wall of the crushing box. The top inside the crushing box is rotatably connected with crushing rollers, and the two crushing rollers are meshed with each other. A sieve plate is arranged below the two crushing rollers. The sieve plate is obliquely placed, and the upper surface of the sieve plate is flush with the outlet. Although the device can ensure the crushing of zinc calcine and improve the discharging efficiency, in actual use, the crushed zinc calcine is of light quality and is easy to escape into the air along with the vibration of the sieve mesh, which may cause environmental pollution, and it is necessary to manually feed the zinc calcine that does not reach the size again, which is time-consuming and laborious;

[0004] The crushing device can reflux the powder that does not reach the size through the reflux structure, improving the convenience of the device. However, the device also needs to use a sieve mesh to screen and discharge the crushed powder, and improve the screening efficiency of the powder through a vibration structure, etc. At the same time, it is necessary to consider the problem that the sieve mesh is easy to be blocked during use, resulting in a decrease in screening efficiency. Therefore, the structure of the crushing device is often relatively complex, increasing the production cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a waste residue crushing device for preparing zinc calcine from zinc-containing waste residue. Through the crushing box and the reflux pipe, the problems that after the waste residue is crushed by the crushing device, the waste residue with smaller particles is easy to escape into the air during the screening process, and continuously humidifying the powder with a spray structure increases the production cost and expenses, and the device needs to consider problems such as the reflux of the powder and the cleaning of the sieve mesh, and the structure of the device is relatively complex, and the cost and maintenance expenses are relatively high are solved.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model discloses a slag crushing device for preparing zinc roasted sand from zinc-containing waste slag, comprising a crushing box and a reflux pipe, wherein a crushing motor is arranged outside the crushing box, crushing rollers are penetrated and connected on both sides of the crushing box, a reflux pipe is arranged on one side of the crushing box, a screen is penetrated and connected on the outer peripheral surface of the reflux pipe, and a spiral feeding assembly is penetrated and connected on the top of the reflux pipe;

[0008] The crushing motor can drive the crushing roller to rotate, crush the zinc-containing waste slag, and improve the degree of automation of the device. The rotation of the spiral feeding component can drive the powder entering the inner side of the reflux pipe to be transported along the reflux pipe. Powder that reaches the corresponding size can be sieved through the screen under the action of gravity and discharged, while powder that does not reach the size flows back to the crushing box for crushing again. At the same time, the rotating spiral feeding component can clean the surface of the screen to avoid clogging of the screen. A certain amount of water can be poured into the inside of the reflux pipe so that the crushed powder can be humidified after entering the reflux pipe, increasing the weight of the powder, avoiding the escape of the powder, and ensuring that the heavier powder can be quickly sieved through the screen. Secondly, the powder containing water can cool and lubricate the crushing roller when it is crushed again, extending the service life of the crushing roller, and at the same time solving the problems of powder escape, screen cleaning, and difficulty in quickly screening the powder. The device has a simple structure, and is relatively convenient to operate, inspect and maintain, reducing production costs and maintenance expenses.

[0009] Furthermore, a top cover is fixedly connected to the top of the crushing box, a feed hopper is welded through the top of the top cover, a discharge hopper is welded through the bottom of the crushing box, and a support frame is welded and fixed around the bottom of the crushing box;

[0010] The zinc-containing waste slag enters the crushing box through the feed hopper, and after being crushed by the crushing roller, it can enter the inner side of the reflux pipe along the discharge hopper for humidification, screening and reflux treatment. The structure is simple, and the zinc-containing waste slag can be fed at any time.

[0011] Furthermore, one end of the pulverizing motor is clamped with a transmission assembly, the transmission assembly is clamped on one side of the pulverizing box, one end of the pulverizing roller is clamped on the other side of the transmission assembly relative to the pulverizing motor, and the pulverizing roller is connected to the pulverizing motor through the transmission assembly;

[0012] The crushing motor drives the crushing roller to rotate through the transmission component to crush the waste residue and improve the automation level of the device.

[0013] Furthermore, a first connecting pipe is welded through the top of the outer peripheral surface of the return pipe, a feeding pipe is welded through the outer peripheral surface of the return pipe, the screen is located between the feeding pipe and the first connecting pipe, a drain pipe and a second connecting pipe are welded through the bottom of the outer peripheral surface of the return pipe, the top of the feeding pipe is connected to the bottom of the discharge hopper, and the bottom of the first connecting pipe is connected to the top of one side of the crushing box;

[0014] Water can be poured into the crushing box through the feeding hopper. Under the action of gravity, the water enters the return pipe. After the powder enters the blanking pipe, it can be humidified by the water, increasing the weight of the powder and preventing the powder from escaping. When the powder returns through the screw conveyor assembly and the return pipe, the powder that reaches the specified size can be screened and discharged through the sieve. Moreover, the moisture increases the weight of the powder, improving the screening efficiency of the powder and preventing the powder from being too light to be screened quickly. At the same time, the powder containing moisture can cool and lubricate the crushing roller during the re-crushing process, extending the service life of the crushing roller. It can also humidify the waste residue that has not been crushed, increasing the weight of the crushed powder so that it can quickly enter the return pipe and further preventing the escape of dry powder.

[0015] Further, a water drainage tank is welded through the other end of the second connecting pipe relative to the return pipe. A water drainage and material collection frame is inserted into the top of the water drainage tank. The water drainage and material collection frame is located at the top of the second connecting pipe. A filter screen is fixedly clamped in the return pipe. The filter screen is located between the blanking pipe and the drain pipe. The filter screen fits against the bottom of the screw conveyor assembly. The screw conveyor assembly fits against the inner wall of the return pipe. A feeding motor is clamped to the top of the return pipe. The screw conveyor assembly is rotationally clamped to the bottom of the feeding motor.

[0016] After the powder enters the inner side of the return pipe, the feeding motor can drive the screw conveyor assembly to rotate, causing the water-containing powder to move along the return pipe. The filter screen can filter the fine dust in the powder, and the rotation of the screw conveyor assembly can clean the surfaces of the sieve and the filter screen, preventing the sieve and the filter screen from being blocked and ensuring the screening and filtering efficiency.

[0017] Further, a discharge sleeve is clamped and fixed to the outer peripheral surface of the return pipe. A discharge pipe is welded through the bottom of the outer peripheral surface of the discharge sleeve. The discharge sleeve is located on the outer peripheral surface of the sieve. The bottom of the discharge pipe hangs above the water drainage and material collection frame.

[0018] The discharge sleeve can guide the powder that has passed through the sieve, causing the powder to fall into the inner side of the water drainage and material collection frame through the discharge pipe under the action of gravity. Through the water drainage and material collection frame, a large amount of moisture falls into the water drainage tank, preventing a large amount of moisture loss, reducing the number of water replenishment times, and facilitating subsequent drying treatment of the powder.

[0019] The utility model has the following beneficial effects:

[0020] The utility model solves the problems that although the device can ensure the crushing of zinc calcine and improve the discharging efficiency, in actual use, the crushed zinc calcine is light in weight and easy to escape into the air with the vibration of the sieve, which may cause environmental pollution, and it is necessary to manually feed the zinc calcine that does not reach the size again, which is time-consuming and laborious. Before the waste residue is crushed and processed, water is poured into the crushing box and the water level is lower than the bottom of the sieve. When the waste residue is crushed, the crushed powder falls into the water in the reflux pipe to humidify the powder, avoiding the escape of the powder during sieving, and increasing the weight of the powder, further improving the sieving efficiency of the powder. At the same time, when the powder containing moisture enters the crushing box again through the reflux pipe, it can cool down and lubricate the crushing roller, prolonging the service life of the crushing roller, and can humidify the waste residue that has not been crushed, increasing the weight of the crushed powder, enabling it to quickly enter the reflux pipe, and further avoiding the escape of dry powder.

[0021] The utility model solves the problems that the crushing device can reflux the powder that does not reach the size through the reflux structure, improving the convenience of the device, but the device also needs to use a sieve to screen and discharge the crushed powder, and uses a vibration structure, etc. to improve the screening efficiency of the powder. At the same time, it is necessary to consider the problem that the sieve is easy to be blocked during use, resulting in a decrease in the screening efficiency. Therefore, the structure of the crushing device is often more complex, increasing the production cost. When the powder is crushed and enters the reflux pipe, the powder is humidified by water, and the rotation of the spiral feeding component conveys the powder along the reflux pipe. The powder that reaches the corresponding size passes through the sieve and is discharged under the action of gravity, while the powder that does not reach the size flows back into the crushing box for further crushing and processing. At the same time, the rotating spiral feeding component can clean the surface of the sieve to avoid blockage of the sieve, and the powder with increased weight due to wetting can quickly pass through the sieve. Secondly, the powder containing moisture can cool down and lubricate the crushing roller during the re-crushing process. At the same time, it solves the problems of powder escape, sieve cleaning, and difficult and slow sieving of the powder, and the device has a simple structure, is convenient for operation, inspection and maintenance, reducing the production cost and maintenance expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural effect diagram of the utility model;

[0023] Figure 2 is the structural diagram of the crushing box of the utility model;

[0024] Figure 3 is the structural diagram of the crushing roller and the crushing motor of the utility model;

[0025] Figure 4 is the structural diagram of the reflux pipe of the utility model;

[0026] Figure 5This is a cross-sectional view of the return pipe of the utility model.

[0027] Reference numerals:

[0028] 1. Crushing box; 101. Feeding hopper; 102. Top cover; 103. Crushing motor; 104. Transmission assembly; 105. Support frame; 106. Discharge hopper; 107. Crushing roller; 2. Return pipe; 201. Discharge sleeve; 202. Feeding motor; 203. Drainage tank; 204. Feeding pipe; 205. First connecting pipe; 206. Discharge pipe; 207. Screen; 208. Drain pipe; 209. Drainage and material collection rack; 210. Second connecting pipe; 211. Screw feeding assembly; 212. Filter screen. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0030] Please refer to Figures 1-5 As shown, the present utility model is a waste residue crushing device for preparing zinc calcine from zinc-containing waste residue, including a crushing box 1 and a return pipe 2. A crushing motor 103 is arranged outside the crushing box 1. Crushing rollers 107 are penetrated and clamped on both sides inside the crushing box 1. A return pipe 2 is arranged on one side of the crushing box 1. A screen 207 is penetrated and clamped on the outer peripheral surface of the return pipe 2. A screw feeding assembly 211 is penetrated and inserted at the top of the return pipe 2;

[0031] Before crushing the waste residue, pour a certain amount of water into the crushing box 1 and make the water level lower than the bottom of the screen 207. Pour the waste residue to be crushed into the crushing box 1 and start the crushing device. The crushing motor 103 drives the crushing rollers 107 to rotate to crush the waste residue. The crushed waste residue falls into the return pipe 2 under the action of gravity, and the powder is humidified by water. The feeding motor 202 drives the screw feeding assembly 211 to rotate, so that the powder moves upward along the return pipe 2. The powder that reaches the size passes through the screen 207 by gravity and falls into the drainage and material collection rack 209 for drainage and collection. The powder that does not reach the size flows back into the crushing box 1. The water in the powder cools and lubricates the crushing rollers 107, and is crushed again by the crushing rollers 107. The rotating screw feeding assembly 211 scrapes off the particles blocked in the screen 207 to ensure the screening efficiency.

[0032] Among them, as Figures 1-3As shown in the figure, a top cover 102 is clamped and fixed to the top of the crushing box 1. A feeding hopper 101 is welded through the top of the top cover 102. A discharging hopper 106 is welded through the bottom of the crushing box 1. Support frames 105 are welded and fixed around the bottom of the crushing box 1. One end of a crushing motor 103 is clamped with a transmission assembly 104. The transmission assembly 104 is clamped to one side of the crushing box 1. One end of a crushing roller 107 is clamped to the other side of the transmission assembly 104 relative to the crushing motor 103. The crushing roller 107 is drivingly connected to the crushing motor 103 through the transmission assembly 104.

[0033] When crushing zinc-containing waste residue, the waste residue is poured into the crushing box 1 through the feeding hopper 101. The crushing motor 103 drives the crushing roller 107 to rotate through the transmission assembly 104 to crush the waste residue. The crushed powder falls into the return pipe 2 along the discharging hopper 106 and the feeding pipe 204 under the action of gravity.

[0034] As shown in Figure 1 , 4 , and Figure 5, a first connecting pipe 205 is welded through the top of the outer peripheral surface of the return pipe 2. A feeding pipe 204 is welded through the outer peripheral surface of the return pipe 2. A screen 207 is located between the feeding pipe 204 and the first connecting pipe 205. A drain pipe 208 and a second connecting pipe 210 are welded through the bottom of the outer peripheral surface of the return pipe 2. The top of the feeding pipe 204 is clamped through the bottom of the discharging hopper 106. The bottom of the first connecting pipe 205 is clamped through the top of one side of the crushing box 1. The other end of the second connecting pipe 210 relative to the return pipe 2 is welded with a water draining box 203. A water draining and material collecting frame 209 is inserted into the top of the water draining box 203. The water draining and material collecting frame 209 is located on the top of the second connecting pipe 210. A filter screen 212 is clamped and fixed in the return pipe 2. The filter screen 212 is located between the feeding pipe 204 and the drain pipe 208. The filter screen 212 is attached to the bottom of the screw feeding assembly 211. The screw feeding assembly 211 is attached to the inner wall of the return pipe 2. A feeding motor 202 is clamped to the top of the return pipe 2. The screw feeding assembly 211 is rotationally clamped to the bottom of the feeding motor 202.

[0035] An outlet sleeve 201 is clamped and fixed to the outer peripheral surface of the return pipe 2. An outlet pipe 206 is welded through the bottom of the outer peripheral surface of the outlet sleeve 201. The outlet sleeve 201 is located on the outer peripheral surface of the screen 207. The bottom of the outlet pipe 206 hangs over the upper side of the water draining and material collecting frame 209.

[0036] When the powder enters the inner side of the return pipe 2 through the feeding pipe 204, the powder is humidified by water. The dust in the powder precipitates at the bottom of the inner side of the return pipe 2 through the filter screen 212. The feeding motor 202 drives the spiral feeding assembly 211 to rotate, so that the powder moves upward along the return pipe 2. The powder that reaches the size is sieved through the sieve mesh 207 under the action of gravity, and is guided by the discharge sleeve 201 and falls along the discharge pipe 206 into the water-draining and material-collecting rack 209 for water draining and collection. The drained water enters the water-draining tank 203 and returns to the return pipe 2 through the first connecting pipe 205. The powder that does not reach the size returns to the pulverizing box 1 through the second connecting pipe 210. The powder containing water cools down and lubricates the pulverizing roller 107. The rotation of the spiral feeding assembly 211 cleans the surfaces of the sieve mesh 207 and the filter screen 212, avoiding the blockage of the sieve mesh 207 and the filter screen 212.

[0037] The specific working principle of the present utility model is as follows: Before pulverizing the zinc-containing waste residue, a certain amount of water is poured into the pulverizing box 1, and the water level is lower than the bottom of the sieve mesh 207. The waste residue is poured into the pulverizing box 1 through the feeding hopper 101. The pulverizing device is started to pulverize the waste residue. The pulverizing motor 103 drives the pulverizing roller 107 to rotate through the transmission assembly 104 to pulverize the waste residue. The pulverized powder enters the return pipe 2 along the discharge hopper 106 and the feeding pipe 204 under the action of gravity, and the powder is humidified by water. The dust in the powder precipitates at the bottom of the inner side of the return pipe 2 through the filter screen 212. The feeding motor 202 drives the spiral feeding assembly 211 to rotate, so that the powder moves upward along the return pipe 2. The powder that reaches the size is sieved through the sieve mesh 207 under the action of gravity, and is guided by the discharge sleeve 201 and falls along the discharge pipe 206 into the water-draining and material-collecting rack 209 for water draining and collection. The drained water enters the water-draining tank 203 and returns to the return pipe 2 through the first connecting pipe 205. The powder that does not reach the size returns to the pulverizing box 1 through the second connecting pipe 210. The powder containing water cools down and lubricates the pulverizing roller 107. The rotation of the spiral feeding assembly 211 cleans the surfaces of the sieve mesh 207 and the filter screen 212, avoiding the blockage of the sieve mesh 207 and the filter screen 212. After the pulverizing process of the waste residue is completed, the water-draining and material-collecting rack 209 is taken off to further process the powder, and the drain pipe 208 is opened to pour out the sewage.

[0038] The above are only the preferred embodiments of the present utility model, which do not limit the present utility model. Any modification of the technical solutions recorded in the foregoing embodiments, any equivalent replacement of some technical features, and any modification, equivalent replacement, and improvement made all fall within the protection scope of the present utility model.

Claims

1. A waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag, comprising a crushing box (1) and a reflux pipe (2), characterized in that: A pulverizing motor (103) is arranged outside the pulverizing box (1), pulverizing rollers (107) are inserted through the two sides of the pulverizing box (1), a return pipe (2) is arranged on one side of the pulverizing box (1), a screen (207) is inserted through the outer peripheral surface of the return pipe (2), and a spiral feeding assembly (211) is inserted through the top of the return pipe (2).

2. The waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag according to claim 1, characterized in that: A top cover (102) is fixedly fastened to the top of the pulverizing box (1), a feed hopper (101) is welded through the top of the top cover (102), a discharge hopper (106) is welded through the bottom of the pulverizing box (1), and a support frame (105) is welded and fixed around the bottom of the pulverizing box (1).

3. The waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag according to claim 1, characterized in that: One end of the pulverizing motor (103) is clamped with a transmission assembly (104), the transmission assembly (104) is clamped to one side of the pulverizing box (1), one end of the pulverizing roller (107) is clamped to the other side of the transmission assembly (104) relative to the pulverizing motor (103), and the pulverizing roller (107) is transmission-connected to the pulverizing motor (103) via the transmission assembly (104).

4. The waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag according to claim 2, characterized in that: A first connecting pipe (205) is welded through the top of the outer peripheral surface of the return pipe (2), a discharge pipe (204) is welded through the outer peripheral surface of the return pipe (2), the screen (207) is located between the discharge pipe (204) and the first connecting pipe (205), a drainage pipe (208) and a second connecting pipe (210) are welded through the bottom of the outer peripheral surface of the return pipe (2), the top of the discharge pipe (204) is connected to the bottom of the discharge hopper (106), and the bottom of the first connecting pipe (205) is connected to the top of one side of the crushing box (1).

5. The waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag according to claim 4, characterized in that: A drain box (203) is welded through the other end of the second connecting pipe (210) relative to the return pipe (2), and a drain receiving rack (209) is inserted on the top of the drain box (203). The drain receiving rack (209) is located on the top of the second connecting pipe (210). A filter screen (212) is fixedly connected inside the return pipe (2). The filter screen (212) is located between the discharge pipe (204) and the drain pipe (208). The filter screen (212) is attached to the bottom of the spiral feeding assembly (211). The spiral feeding assembly (211) is attached to the inner wall of the return pipe (2). A feeding motor (202) is attached to the top of the return pipe (2), and the spiral feeding assembly (211) is rotatably connected to the bottom of the feeding motor (202).

6. The waste slag crushing device for preparing zinc roasted sand from zinc-containing waste slag according to claim 5, characterized in that: A discharge sleeve (201) is fixedly fastened to the outer circumference of the return pipe (2), a discharge pipe (206) is welded through the bottom of the outer circumference of the discharge sleeve (201), the discharge sleeve (201) is located on the outer circumference of the screen (207), and the bottom of the discharge pipe (206) is suspended on the upper side of the draining and collecting rack (209).

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