Method for producing zinc oxide and breaking device thereof

Abstract

The application belongs to the technical field of zinc oxide preparation, and particularly relates to a zinc oxide preparation method, which comprises the following steps: step 1: raw material preparation, wherein zinc mud, sodium hydroxide and carbon dioxide are put into a mixer; step 2: mixing and dissolving, wherein the pretreated zinc mud is mixed with an appropriate amount of sodium hydroxide solution, and is fully stirred and uniformly distributed, so that the zinc mud is dissolved to obtain a mixed solution; and step 3: carbon dioxide is introduced, wherein carbon dioxide gas is introduced into the mixed solution, so that the solution is weakly alkaline, and a chemical reaction occurs to generate basic zinc carbonate precipitate, and the incompletely crushed materials can be re-fed for crushing through the setting of a conveying belt and a scraper.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of zinc oxide preparation, and particularly relates to a zinc oxide preparation method and a crushing device thereof. BACKGROUND

[0002] Zinc oxide is widely used in many fields and is a common chemical additive. It can be used in the production of products such as plastics, silicate products, synthetic rubber, lubricating oil, paint coating, ointment, adhesive, food, battery, and flame retardant.

[0003] A patent with the publication number CN115672460A discloses a preparation device for high-activity nano zinc oxide, which comprises a main body, an inner side surface of the main body is fixedly connected with a partition plate, a first rotating shaft is movably connected in the main body, a roller shaft is fixedly connected to the surface of the first rotating shaft, a conveyor belt is movably connected to the surface of the roller shaft, and a baffle is fixedly connected to the surface of the conveyor belt. The above-mentioned application can effectively continuously convey the zinc oxide not meeting the specifications to the crushing roller for re-crushing through the cooperation of the conveyor belt and the baffle.

[0004] In the above-mentioned prior art, the zinc oxide not meeting the specifications will slide downward through the inclined screen mesh to the partition plate, and then fall above the feeding plate through the opening of the partition plate for re-feeding. Since the inclined direction of the feeding plate is opposite to that of the screen mesh, when the feeding plate moves to the opening of the partition plate, the raw material falling above the feeding plate may slide downward to the opening of the partition plate due to gravity and be accumulated. When one end of the accumulated raw material is stuck in the opening and the other end is above the feeding plate, the feeding plate moves upward and extrudes the raw material, which may cause damage to the feeding plate, so that the feeding plate cannot drive the raw material not fully crushed to move to the inclined plate for feeding operation.

[0005] Therefore, the application provides a zinc oxide preparation method. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the application to solve the technical problems is that the zinc oxide preparation method comprises the following steps:

[0008] Step 1: raw material preparation, put zinc mud, sodium hydroxide and carbon dioxide into a mixer;

[0009] Step 2: mixing and dissolving, mix the pretreated zinc mud with an appropriate amount of sodium hydroxide solution, fully stir and mix, dissolve the zinc mud to obtain a mixed solution;

[0010] Step 3: carbon dioxide is bubbled into the above mixture, the solution is weakly alkaline, and a chemical reaction occurs to form basic zinc carbonate precipitate;

[0011] Step 4: dehydration treatment, the above obtained basic zinc carbonate precipitate is heated to remove water and carbon dioxide to obtain zinc oxide;

[0012] Step 5: washing and impurity removal, the above obtained zinc oxide is washed and impurity removed;

[0013] Step 6: drying, the washed and impurity removed zinc oxide is dried to remove water and other volatile components

[0014] Step 7: calcination, the dried zinc oxide is calcined to promote its crystallization and convert it into active zinc oxide;

[0015] Step 8: crushing, the calcined zinc oxide is placed in the inside of the crushing device, the raw material is crushed by the crushing roller in the inside of the crushing device, and the raw material that is not crushed enough is fed again by the scraper driven by the conveyor belt, so that the raw material is completely crushed and the zinc oxide that meets the specifications is obtained.

[0016] A crushing device for preparing zinc oxide includes a bottom plate, a plurality of support frames are fixedly connected to the four corners of the bottom plate, a plurality of crushing boxes are slidably connected to the interiors of the support frames, an inlet frame is fixedly connected to the upper surface of each crushing box, a discharge frame is arranged on the lower surface of each crushing box, two first rotating rods are rotatably connected to the interior of each crushing box, a crushing roller is fixedly connected to the middle portion of each first rotating rod, a gear is fixedly connected to one end of each first rotating rod, and the two gears are meshed with each other, a crushing motor is fixedly connected to one side of each crushing box, and the output end of the crushing motor is fixedly connected to the other end of one of the first rotating rods.

[0017] Preferably, a vibration motor is fixedly connected to the lower surface of the discharge frame, and the discharge frame is arranged obliquely, and the two crushing rollers are located below the inlet frame.

[0018] Preferably, a connecting rod is slidably connected to the interior of each support frame, one end of each connecting rod is fixedly connected to the side wall of the crushing box, and a first spring is fixedly connected between the side wall of the crushing box and the support frame.

[0019] Preferably, the inside of the crushing box is provided with a plurality of limiting wheels in symmetrical rotation, the plurality of limiting wheels are connected by a transmission belt, a plurality of driving rods are rotatably arranged between the transmission belts, the middle parts of the plurality of driving rods are fixedly connected with scrapers, the inner wall of the crushing box is fixedly connected with a filter plate, the upper surface of the filter plate is fixedly connected with a feeding frame, the surface of the feeding frame is fixedly connected with a baffle, the upper surface of the filter plate and the inner wall of the feeding frame are mutually attached to one end of the scraper, the other end of the scraper is attached to one side of the baffle, the inside of the feeding frame is provided with a feeding port, the inside of the feeding port is fixedly connected with an inclined plate, and one side of the inclined plate is fixedly connected with the surface of the feeding frame.

[0020] Preferably, the rotating end of one of the gears and one end of the first rotating rod are fixedly connected with pulleys, and the two pulleys are connected by a belt.

[0021] Preferably, the two ends of the rotating rod are fixedly connected with limiting frames, one side of the transmission belt is fixedly connected with a fixed plate, the second spring is fixedly connected between one side of the fixed plate and one side of the limiting frame, the inner wall of the crushing box is symmetrically provided with a limiting groove, and one end of the limiting frame is slidably connected with the inside of the limiting groove.

[0022] Preferably, the limiting groove comprises a scraping section, a feeding section, a switching section and a resetting section, and the scraping section and the feeding section are vertically arranged.

[0023] Preferably, the inside of the baffle is fixedly connected with a sliding rod, the surface of the sliding rod is slidably connected with a horizontal plate, the upper surface of the horizontal plate is fixedly connected with a second magnetic block, the back surface of the second magnetic block is fixedly connected with a third spring, the inside of the scraper is fixedly connected with a first magnetic block, and the first magnetic block and the second magnetic block are magnetically repelled.

[0024] Preferably, in a normal state, one end of the horizontal plate is located outside the side wall of the baffle and is attached to one end of the inclined plate, and the extension length of the horizontal plate matches the thickness of the scraper.

[0025] The beneficial effects of the present application are as follows:

[0026] 1. The zinc oxide preparation method, by setting the transmission belt and the scraper, the scraper movement can push the unbroken raw materials on the surface of the filter plate, during the pushing process, the broken raw materials can be filtered by the filter plate, the scraper drives the raw materials to move to the highest position through the feeding frame, at this time, the unbroken raw materials fall on the inclined plate and the horizontal plate by gravity, the unbroken raw materials are sent to the feeding frame again through the inclined plate for crushing, the unbroken materials can be re-fed for crushing, so that the raw materials can be broken to the required size by the filter plate, and the materials can be more fully broken, and the crushing efficiency is improved.

[0027] 2. The preparation method of the zinc oxide, through the limiting groove, when the limiting frame is in the switching section, at this time the limiting frame will drive the driving rod to rotate, the driving rod drives the scraper to rotate, so that the side of the scraper with the first magnetic block is attached to the side of the baffle, when the scraper drives the first magnetic block to move, the first magnetic block contacts the second magnetic block, so that the second magnetic block drives the horizontal plate to be stored in the groove, at this time the baffle and the inclined plate leave a gap, the scraper can pass through the gap, when the scraper passes completely, the third spring drives the horizontal plate to reset to continue the feeding operation, which can avoid the problem that the scraper cannot pass through the inclined plate due to the limiting of the inclined plate, so that the scraper cannot transport the subsequent raw materials which are not completely broken. BRIEF DESCRIPTION OF DRAWINGS

[0028] The application will be further described below in combination with the drawings.

[0029] Figure 1 is the preparation process schematic diagram of the application;

[0030] Figure 2 is the structure schematic diagram of the crushing device of the application;

[0031] Figure 3 is the structure schematic diagram of the crushing box of the application;

[0032] Figure 4 is the structure sectional view of the crushing device of the application;

[0033] Figure 5 is the local enlarged view of A in the application; Figure 4

[0034] Figure 6 is the structure schematic diagram of the scraper of the application;

[0035] Figure 7 is the structure schematic diagram of the elongation mechanism of the application;

[0036] In the figure: 1, bottom plate; 2, crushing box; 21, feeding frame; 22, discharging frame; 23, feeding port; 24, limiting groove; 241, scraping section; 242, feeding section; 243, switching section; 244, resetting section; 3, support frame; 31, connecting rod; 32, first spring; 4, crushing motor; 41, first rotating rod; 42, gear; 43, crushing roller; 5, vibration motor; 6, baffle; 61, limiting wheel; 62, pulley; 63, conveyor belt; 64, scraper; 65, first magnetic block; 66, driving rod; 67, fixed plate; 68, second spring; 69, limiting frame; 610, horizontal plate; 611, groove; 612, sliding rod; 613, third spring; 614, second magnetic block; 7, filter plate; 8, feeding frame; 9, inclined plate. DETAILED DESCRIPTION​

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0038] like Figures 1 to 2 As shown in the embodiment of the present invention, a method for preparing zinc oxide includes the following steps:

[0039] Step 1: Raw material preparation: Place zinc mud, sodium hydroxide, and carbon dioxide into a mixer;

[0040] Step 2: Mixing and dissolving. Mix the pretreated zinc mud with an appropriate amount of sodium hydroxide solution and stir thoroughly to dissolve the zinc mud and obtain a mixed solution.

[0041] Step 3: Carbon dioxide is introduced. Carbon dioxide gas is introduced into the above mixture to make the solution weakly alkaline and to cause a chemical reaction, producing basic zinc carbonate precipitate.

[0042] Step 4: Dehydration treatment. The basic zinc carbonate precipitate obtained above is heated to remove water and carbon dioxide, yielding zinc oxide.

[0043] Step 5: Washing and impurity removal. The zinc oxide obtained above is washed and impurity removed.

[0044] Step 6: Drying. The washed and cleaned zinc oxide is dried to remove moisture and other volatile components.

[0045] Step 7: Calcination. The dried zinc oxide is calcined to promote its crystallization and conversion into active zinc oxide.

[0046] Step 8: Crushing. The calcined zinc oxide is placed inside the crushing device. The crushing rollers inside the crushing device crush the raw material, and the scraper driven by the conveyor belt refeeds the insufficiently crushed raw material, so that the raw material is completely crushed and zinc oxide that meets the specifications is obtained.

[0047] Furthermore, in order to obtain zinc oxide products that meet specifications, the zinc oxide preparation method of the present invention uses a crushing device to automatically refeed incompletely crushed products to the feeding rack for subsequent crushing until they meet the specifications.

[0048] like Figure 2 and Figure 4As shown, a kind of crushing device for zinc oxide preparation, including bottom plate 1, the four corners of the bottom plate 1 are fixedly connected with support frame 3, the inside of multiple support frames 3 are slidably connected with crushing box 2, the upper surface of the crushing box 2 is fixedly connected with feeding frame 21, the lower surface of the crushing box 2 is provided with discharge frame, the inside of the crushing box 2 is rotatably connected with two first rotating rods 41, the middle part of each first rotating rod 41 is fixedly connected with crushing roller 43, one end of each first rotating rod 41 is fixedly connected with gear 42, and two gears 42 are engaged with each other, one side of the crushing box 2 is fixedly connected with crushing motor 4, the output end of the crushing motor 4 is fixedly connected with the other end of one of the first rotating rods 41, a plurality of limit wheels 61 are rotatably arranged symmetrically in the crushing box 2, a plurality of limit wheels 61 are drivingly connected by conveyor belt 63, a plurality of driving rods 66 are rotatably arranged between the conveyor belt 63, the middle part of a plurality of driving rods 66 is fixedly connected with scraper 64, the inner wall of the crushing box 2 is fixedly connected with filter plate 7, the upper surface of the filter plate 7 is fixedly connected with feeding frame 8, the surface of the feeding frame 8 is fixedly connected with baffle 6, the upper surface of the filter plate 7 and the inner wall of the feeding frame 8 are mutually attached to one end of the scraper 64, one side of the baffle 6 is attached to the other end of the scraper 64, the inside of the feeding frame 21 is provided with feeding port 23, the inside of the feeding port 23 is fixedly connected with inclined plate 9, one side of the inclined plate 9 is fixedly connected with the surface of the feeding frame 8.

[0049] Specifically, in the prior art, the broken raw materials are re-fed, generally by the way of conveyor belt, the feeding plate is installed on the surface of the conveyor belt, and the re-feeding process is as follows: the raw materials are crushed by the crushing roller and fall above the filter plate, the filter plate is inclined to screen the raw materials, the broken raw materials slide downward and fall on the feeding plate, the feeding plate rotates with the conveyor belt and drives the raw materials to rise, when the raw materials move to the appropriate height, the raw materials can be sent to the crushing roller for re-crushing through a group of inclined plates.

[0050] The prior art has the following problems: the filter plate sends the broken raw materials to the feeding plate through the opening, when the feeding plate moves to the opening, the inclination direction of the feeding plate is generally opposite to that of the filter plate, at this time, the broken raw materials above the feeding plate may slide down to the opening due to gravity and accumulate, when one end of the accumulated raw materials is stuck in the opening and the other end is above the feeding plate, the feeding plate moves upward and extrudes the raw materials, which may cause damage to the feeding plate, so that the feeding plate cannot drive the broken raw materials to move to the inclined plate for feeding operation;

[0051] When the application is used, the crushing motor 4 is turned on, the first rotating rod 41 is driven to rotate by the crushing motor 4, one of the crushing rollers 43 is driven to rotate by the first rotating rod 41, the gear 42 is driven to rotate by the first rotating rod 41, the gear 42 is engaged with the gear 42 on the other first rotating rod 41, so that the two first rotating rods 41 can drive the crushing rollers 43 to rotate at the same time, at this time, the raw materials are put into the inside of the feeding rack 21, the raw materials fall between the two crushing rollers 43 for crushing, the crushed raw materials fall on the filter plate 7, the completely crushed raw materials are screened through the filter plate 7, at the same time, the limiting wheel 61 can also be driven to rotate, the limiting wheel 61 drives the conveying belt 63 to move, the conveying belt 63 drives the driving rod 66 in the inside to move, the driving rod 66 drives the scraper 64 to move, the scraper 64 pushes the incompletely crushed raw materials above the filter plate 7 and cleans the top of the filter plate 7, the incompletely crushed raw materials are pushed to the feeding rack 8 by the scraper 64, the raw materials slide to one side of the baffle 6 by gravity and move upward along with the scraper 64, when the scraper 64 moves to the top, the incompletely crushed raw materials slide downward by gravity and fall on the inclined plate 9, then slide to the discharge port through the inclined plate 9 and return to the inside of the feeding rack 21 for subsequent crushing operation again, and the completely crushed raw materials are discharged through the discharging rack;

[0052] The device can directly convey the incompletely crushed raw materials to the top of the inclined plate 9 through the cooperation of the feeding rack 8 and the scraper 64, so that the phenomenon of accumulation at the opening caused by the incompletely crushed raw materials sliding off the top surface of the scraper 64 is avoided, and the problem that the scraper 64 cannot continue to feed due to damage of the scraper 64 during feeding is avoided.

[0053] As shown in Figure 4 The lower surface of the discharging rack is fixedly connected with the vibration motor 5, the discharging rack is inclined, the two crushing rollers 43 are located below the feeding rack 21, the inside of the supporting frame 3 is slidably connected with the connecting rod 31, one end of each connecting rod 31 is fixedly connected with the side wall of the crushing box 2, and the first spring 32 is fixedly connected between the side wall of the crushing box 2 and the supporting frame 3.

[0054] Specifically, when crushing, the vibration motor 5 can be turned on, the vibration motor 5 drives the crushing box 2 to reciprocate, the crushing box 2 drives the connecting rod 31 to reciprocate left and right in the inside of the supporting frame 3, and the first spring 32 is compressed for buffering while sliding, the vibration can quickly drive the raw materials to fall and discharge, and can also assist in cleaning the filter holes of the filter plate 7 and facilitate the incompletely crushed raw materials on the top of the inclined plate 9 to quickly fall into the inside of the feeding rack 21 again.

[0055] As shown in Figure 3 The rotating end of one of the gears 42 and one end of the first rotating rod 41 are fixedly connected with the belt pulley 62, and the two belt pulleys 62 are connected through a belt drive.

[0056] Specifically, when the first rotating rod 41 rotates, the first rotating rod 41 drives the pulley 62 on the surface of the first rotating rod 41 to rotate, and the pulley 62 can drive the pulley 62 of the limiting wheel 61 to rotate synchronously through the belt, that is, the conveying belt 63 can be driven to move synchronously when the crushing roller 43 rotates, so that the crushing and feeding can be performed synchronously. Embodiments

[0057] As shown in FIG. 1, the first rotating rod 41 is fixedly connected with the limiting wheel 61, and the limiting wheel 61 is fixedly connected with the conveying belt 63. Figures 4 to 7 As shown in FIG. 2, another embodiment of the present application is that the two ends of the rotating rod are fixedly connected with the limiting frame 69, one side of the conveying belt 63 is fixedly connected with the fixed plate 67, the second spring 68 is fixedly connected between one side of the fixed plate 67 and one side of the limiting frame 69, the inner wall of the crushing box 2 is symmetrically provided with the limiting groove 24, one end of the limiting frame 69 is slidably connected with the inside of the limiting groove 24, the limiting groove 24 comprises the scraping section 241, the feeding section 242, the switching section 243 and the resetting section 244, the scraping section 241 and the feeding section 242 are vertically arranged, the inside of the baffle 6 is fixedly connected with the sliding rod 612, the surface of the sliding rod 612 is slidably connected with the horizontal plate 610, the upper surface of the horizontal plate 610 is fixedly connected with the second magnetic block 614, the back surface of the second magnetic block 614 is fixedly connected with the third spring 613, the inside of the scraper 64 is fixedly connected with the first magnetic block 65, the first magnetic block 65 and the second magnetic block 614 are magnetically repulsive to each other, one end of the horizontal plate 610 is located outside the baffle 6 in the normal state, and is attached to one end of the inclined plate 9, the extension length of the horizontal plate 610 matches the thickness of the scraper 64.

[0058] Specifically, when the conveying belt 63 rotates, the conveying belt 63 drives the driving rod 66 inside the conveying belt 63 to move synchronously, the driving rod 66 drives the limiting frame 69 to move synchronously, and one end of the limiting frame 69 slides synchronously in the inside of the limiting groove 24.

[0059] When one end of the limiting frame 69 is in the scraping section 241, one end of the scraper 64 is attached to the upper surface of the filter plate 7, so as to push the uncrushed raw materials above the filter plate 7, and clean the upper surface of the filter plate 7.

[0060] When one end of the limiting frame 69 is in the feeding section 242, one end of the scraper 64 is attached to the inner wall of the feeding frame 8, and the scraper 64 can push the uncrushed raw materials above the filter plate 7 to the inner wall of the feeding frame 8, and then the raw materials will rise to the highest position on the inner wall of the feeding frame 8 with the scraper 64, and when the raw materials are at the highest position, the raw materials will fall on the inclined plate 9 by gravity, and then be transferred to the feeding port 23 through the inclined plate 9.

[0061] When one end of the limiting frame 69 is in the switching section 243, the limiting frame 69 drives the driving rod 66 to rotate and stretch the second spring 68 through the fixed plate 67. The driving rod 66 rotates and drives the scraper 64 to rotate. The scraper 64 rotates and the side of the scraper 64, on which the first magnetic block 65 is installed, is attached to one side of the baffle 6. With the movement of the limiting frame 69 in the switching section 243, the first magnetic block 65 moves to the second magnetic block 614. Because the first magnetic block 65 and the second magnetic block 614 repel each other, the second magnetic block 614 drives the horizontal plate 610 to slide on the surface of the slide rod 612 and press the third spring 613. The horizontal plate 610 slides to the inside of the groove 611 and is completely accommodated in the inside of the groove 611. At this time, a gap exists between the inclined plate 9 and the baffle 6 due to the accommodation of the horizontal plate 610, and the size of the gap is the same as the thickness of the scraper 64. Therefore, the scraper 64 can pass through the gap. When the scraper 64 completely passes through the gap, the third spring 613 resets, driving the second magnetic block 614 and the horizontal plate 610 to reset. The horizontal plate 610 resets and is attached to one end of the inclined plate 9, thereby blocking the gap to prevent the raw materials from passing through.

[0062] When one end of the limiting frame 69 is in the resetting section 244, the limiting frame 69 rotates and presses the second spring 68, so that the limiting frame 69 drives the scraper 64 on the surface of the driving rod 66 to reset to the initial angle.

[0063] The working principle is that the crushing motor 4 and the vibration motor 5 are turned on, the crushing motor 4 drives the first rotating rod 41 to rotate, the first rotating rod 41 drives one of the crushing rollers 43 to rotate, the first rotating rod 41 drives the gear 42 to rotate, the gear 42 is engaged with the gear 42 on the other first rotating rod 41, so that the two first rotating rods 41 can drive the crushing rollers 43 to rotate at the same time, at this time, the raw materials are put into the inside of the feeding rack 21, the raw materials fall between the two crushing rollers 43 for crushing, the crushed raw materials fall on the filter plate 7, and the filter plate 7 is used for screening the raw materials, when the first rotating rod 41 rotates, the first rotating rod 41 drives the belt pulley 62 on the surface to rotate, when the belt pulley 62 rotates, the belt pulley 62 can drive the limiting wheel 61 to rotate synchronously through the belt, that is, the transmission belt 63 can be driven to move synchronously when the crushing roller 43 rotates, when the transmission belt 63 rotates, the transmission belt 63 drives the driving rod 66 in the inside to move synchronously, the driving rod 66 drives the limiting frame 69 to move synchronously, one end of the limiting frame 69 moves synchronously in the inside of the limiting groove 24, when one end of the limiting frame 69 is in the feeding section 242, one end of the scraper 64 is attached to the inner wall of the feeding rack 8, the scraper 64 can push the raw materials on the filter plate 7 to the inner wall of the feeding rack 8, then the raw materials will rise to the highest position on the inner wall of the feeding rack 8 with the scraper 64, when the raw materials are at the highest position, the raw materials will fall on the inclined plate 9 through gravity and be transmitted to the feeding port 23 through the inclined plate 9, when one end of the limiting frame 69 is in the switching section 243, the limiting frame 69 drives the driving rod 66 to rotate and stretch the second spring 68 through the fixed plate 67, the driving rod 66 rotates and drives the scraper 64 to rotate, the scraper 64 rotates and attaches one side provided with the first magnetic block 65 to one side of the baffle 6, with the movement of the limiting frame 69 in the switching section 243 and the movement of the first magnetic block 65 to the second magnetic block 614, the second magnetic block 614 drives the horizontal plate 610 to slide on the surface of the sliding rod 612 and press the third spring 613, the horizontal plate 610 slides into the inside of the groove 611 and is completely accommodated in the inside of the groove 611, at this time, the gap between the inclined plate 9 and the baffle 6 exists due to the accommodation of the horizontal plate 610, and the size of the gap is the same as the thickness of the scraper 64, so the scraper 64 can pass through the gap, when the scraper 64 completely passes through the gap, the third spring 613 resets, drives the second magnetic block 614 and the horizontal plate 610 to reset, the horizontal plate 610 resets and is attached to one end of the inclined plate 9, that is, the gap is blocked to prevent the raw materials from passing through, when one end of the limiting frame 69 is in the reset section 244, the limiting frame 69 rotates and presses the second spring 68, so that the limiting frame 69 drives the scraper 64 on the surface of the driving rod 66 to reset to the initial angle, at the same time, the vibration motor 5 drives the crushing box 2 to reciprocate, the crushing box 2 drives the connecting rod 31 to slide left and right in the inside of the supporting frame 3, and simultaneously presses the first spring 32 for buffering, the vibration can quickly drive the raw materials to fall and discharge, and also can assist in cleaning the filter holes of the filter plate 7,and the broken and insufficient raw materials above the inclined plate 9 can quickly fall into the inside of the feeding rack 21, and then the broken and sufficient raw materials are discharged through the discharging rack.

[0064] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A crushing device for preparing zinc oxide, characterized in that: Includes a base plate (1), with support frames (3) fixedly connected to the four corners of the base plate (1), and a crushing box (2) slidably connected inside the multiple support frames (3). A feeding frame (21) is fixedly connected to the upper surface of the crushing box (2), and a discharge frame is provided on the lower surface of the crushing box (2). Two first rotating rods (41) are rotatably connected inside the crushing box (2). A crushing roller (43) is fixedly connected to the middle of each first rotating rod (41). A gear (42) is fixedly connected to one end of each first rotating rod (41), and the two gears (42) mesh with each other. A crushing motor (4) is fixedly connected to one side of the crushing box (2), and the output end of the crushing motor (4) is fixedly connected to the other end of one of the first rotating rods (41). The crushing box (2) is symmetrically rotatably equipped with several limiting wheels (61), which are connected by a conveyor belt (63). Several driving rods (66) are rotatably arranged between the conveyor belts (63). Scrapers (64) are fixedly connected to the middle of each of the driving rods (66). A filter plate (7) is fixedly connected to the inner wall of the crushing box (2). A feeding frame (8) is fixedly connected to the upper surface of the filter plate (7). A baffle (6) is fixedly connected to the surface of the feeding frame (8). The upper surface of the filter plate (7) and the inner wall of the feeding frame (8) are both in contact with one end of the scraper (64). One side of the baffle (6) is in contact with the other end of the scraper (64). A feed inlet (23) is provided inside the feeding frame (21). An inclined plate (9) is fixedly connected inside the feed inlet (23). One side of the inclined plate (9) is fixedly connected to the surface of the feeding frame (8). Both ends of the rotating rod are fixedly connected to a limiting frame (69), and one side of the conveyor belt (63) is fixedly connected to a fixing plate (67). A second spring (68) is fixedly connected between one side of the fixing plate (67) and one side of the limiting frame (69). The inner wall of the crushing box (2) is symmetrically provided with limiting grooves (24), and one end of the limiting frame (69) is slidably connected to the inside of the limiting groove (24). The limiting groove (24) includes a scraping section (241), a feeding section (242), a switching section (243) and a reset section (244), wherein the scraping section (241) and the feeding section (242) are arranged vertically; The baffle (6) is fixedly connected to a sliding rod (612), and a horizontal plate (610) is slidably connected to the surface of the sliding rod (612). A second magnetic block (614) is fixedly connected to the upper surface of the horizontal plate (610), and a third spring (613) is fixedly connected to the back of the second magnetic block (614). A first magnetic block (65) is fixedly connected to the inside of the scraper (64), and the first magnetic block (65) and the second magnetic block (614) repel each other magnetically. Under normal conditions, one end of the horizontal plate (610) is located on the outer wall of the baffle (6) and is in contact with one end of the inclined plate (9). The extension length of the horizontal plate (610) matches the thickness of the scraper (64).

2. The crushing device for zinc oxide preparation according to claim 1, characterized in that: A vibration motor (5) is fixedly connected to the lower surface of the discharge rack. The discharge rack is inclined, and the two crushing rollers (43) are located below the feed rack (21).

3. The crushing device for zinc oxide preparation according to claim 2, characterized in that: The support frame (3) is slidably connected with connecting rods (31), one end of each connecting rod (31) is fixedly connected to the side wall of the crushing box (2), and a first spring (32) is fixedly connected between the side wall of the crushing box (2) and the support frame (3).

4. The crushing device for zinc oxide preparation according to claim 3, characterized in that: One of the gears (42) has a pulley (62) fixedly connected to the rotating end of one of the first rotating rods (41), and the two pulleys (62) are connected by belt drive.

5. A method for preparing zinc oxide, characterized in that: The crushing method described in any one of claims 1-4 The apparatus includes the following steps: Step 1: Raw material preparation: Place zinc mud, sodium hydroxide, and carbon dioxide into a mixer; Step 2: Mixing and dissolving. Mix the pretreated zinc mud with an appropriate amount of sodium hydroxide solution, and then... Stir the mixture thoroughly to dissolve the zinc mud and obtain a mixed solution. Step 3: Carbon dioxide is introduced. Carbon dioxide gas is introduced into the above mixture to make the solution weakly alkaline and to cause a chemical reaction, producing basic zinc carbonate precipitate. Step 4: Dehydration treatment. The basic zinc carbonate precipitate obtained above is heated to remove water and carbon dioxide, yielding zinc oxide. Step 5: Washing and impurity removal. The zinc oxide obtained above is washed and impurity removed. Step 6: Drying. The washed and cleaned zinc oxide is dried to remove moisture and volatile components. Step 7: Calcination. The dried zinc oxide is calcined to promote its crystallization and conversion into active zinc oxide. Step 8: Crushing. The calcined zinc oxide is placed inside the crushing device. The crushing rollers inside the crushing device crush the raw material, and the scraper driven by the conveyor belt refeeds the insufficiently crushed raw material, so that the raw material is completely crushed and zinc oxide that meets the specifications is obtained.

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