Multi-stage grinding and crushing device for lime powder preparation
By designing a multi-stage grinding device, including pre-milling and multi-stage screening components, the problems of limestone blockage and separation in the prior art are solved, and efficient multi-stage grinding and quality improvement of lime powder are achieved.
Patent Information
- Application Number
- CN202421094783.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing grinding and crushing devices lack pre-milling measures for limestone, which leads to limestone being prone to clogging the device during grinding, and the grinding lime powder and lime particles cannot be effectively separated, affecting the practicality of multi-stage grinding.
A multi-stage grinding device is designed, including a crushing motor, a grinding motor, a screening assembly, etc. The limestone is primary crushed through a pre-milling device to avoid clogging, and the grinded lime powder and lime particles are separated through the multi-stage screening assembly to achieve multi-stage grinding.
It effectively avoids the clogging problem of limestone during grinding, improves the grinding efficiency, and improves the quality of lime powder through multi-stage screening, achieving multi-stage grinding of lime particles of different sizes.
Smart Images
Figure CN222658770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lime powder grinding, in particular to a multi-stage grinding and crushing device for preparing lime powder. Background Art
[0002] Lime powder is a white powder with calcium carbonate as the main component. It has a wide range of applications. The most common one is used in the construction industry, that is, industrial calcium carbonate. Another is food-grade calcium carbonate, which is widely used as a common calcium supplement.
[0003] However, in the prior art, the existing grinding and crushing devices lack measures for pre-crushing the limestone. Usually, the limestone is directly placed in the grinding and crushing device, which easily causes the larger limestone to block the grinding device during grinding, making it inconvenient to use; secondly, the existing grinding and crushing devices are relatively simple and cannot collect the ground lime powder and lime particles separately, making it inconvenient to perform multi-stage grinding of unground lime particles, and are not very practical.
[0004] Therefore, a multi-stage grinding and crushing device for lime powder preparation is proposed to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a multi-stage grinding and crushing device for preparing lime powder.
[0006] In order to achieve the above-mentioned objectives, the utility model adopts the following technical scheme: a multi-stage grinding and crushing device for preparing lime powder, comprising: a base, four ends of the bottom of the base are equipped with supporting legs, a box body is fixedly embedded in the surface of the base, baffle plates are fixedly installed on both sides of the inner cavity of the box body, an L-shaped support plate is fixedly installed on one side of the inner cavity of the box body, a mounting groove is provided on the surface of the L-shaped support plate, a feed bin is installed on the top of the box body, the inner cavity of the feed bin is provided with two crushing devices, the inner cavity of the box body is provided with two grinding devices, the inner cavity of the box body is provided with a screening component 1, and the bottom of the inner cavity of the box body is provided with a screening component 2, discharge bins are fixedly installed on both sides of the box body, the bottoms of the inner cavities of the two discharge bins are provided with placement grooves, the inner cavities of the two discharge bins are movably provided with collecting boxes, and handles are installed on the surfaces of the two collecting boxes.
[0007] Preferably, a control terminal is installed on the surface of the box, a switch door is installed on the surface of the box through a hinge, a handle is installed on the surface of the switch door, a discharge bin is installed at the bottom of the box, discharge ports are provided on both sides of the box, movable groove 1 is provided at one end of both sides of the inner wall of the box, a movable groove is provided on one side of the inner wall of the box, movable groove 2 is provided on both sides of the inner wall of the box, the feed bin and the discharge bin are communicated with the interior of the box, and the two discharge bins are located on one side of the two discharge ports.
[0008] Preferably, the crushing device includes a crushing motor, which is fixedly embedded in one side of the feed bin, and a rotating rod is fixedly installed on the output end of the crushing motor, one end of the rotating rod is connected to one side of the inner wall of the feed bin through a bearing, and a plurality of crushing knives are installed on the surface of the rotating rod.
[0009] Preferably, the grinding device includes a grinding motor, which is fixedly embedded in the top of one side of the box, and a grinding roller is fixedly installed on the output end of the grinding motor. One end of the grinding roller is connected to the inner wall of the box through a bearing, and a plurality of grinding blocks are installed on the surface of the grinding roller.
[0010] Preferably, the screening component 1 includes two vibration motors 1, a screening plate 1 is installed on the top of the two vibration motors 1, a plurality of screen holes 1 are opened on the surface of the screening plate 1, connecting plates are installed on both sides of the screening plate 1, two springs 1 are installed on one side of the two connecting plates, one end of the four springs 1 are installed on the bottom of the inner cavity of two movable grooves 1, four springs 2 are installed on one side of the bottom end of the screening plate 1, one end of the four springs 2 are installed on the bottom of the inner cavity of the mounting groove, the two connecting plates are movable inside the two movable grooves 1, one side of the screening plate 1 moves inside the mounting groove, and the other side of the screening plate 1 moves inside one of the discharge ports and the discharge bin.
[0011] Preferably, the screening component 2 includes a screening plate 2, fixed plates are installed on both sides of the screening plate 2, vibration motors 2 are installed on the bottom of the two fixed plates, springs 3 are installed at both ends of the bottom of the two fixed plates, one end of four springs 3 are connected to the bottom of the inner cavity of the two movable grooves 2, a plurality of screen holes 2 are opened on the surface of the screening plate 2, the two fixed plates and the two vibration motors 2 are movable inside the two movable grooves 2, one side of the screening plate 2 moves inside the movable groove, and the other side of the screening plate 2 moves inside another discharge port and a discharge bin.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) In the utility model, the crushing motor, the grinding motor, the vibration motor 1 and the vibration motor 2 are electrically connected to the control terminal. When lime powder is prepared, the limestone is placed in the feed bin. The crushing motor and the grinding motor can be started through the control terminal. The two crushing motors operate and rotate the rotating rod. The two rotating rods can drive multiple crushing knives on the surface to rotate inward at the same time. At this time, the input limestone can be pre-crushed by the multiple crushing knives. The multiple crushing knives can squeeze and crush the limestone while the two rotating rods rotate inward. The crushed lime can fall downward through the installation gaps of the multiple crushing knives, so that the crushed lime can fall slowly. By setting up a crushing device, the lime can be crushed before grinding. Large limestone can be crushed and then ground, which can avoid the blockage of the grinding device caused by direct grinding of large limestone. The limestone is pre-grinded and crushed by the crushing device, and then ground and crushed by the grinding device. Multi-stage grinding and crushing can be achieved, which can improve the grinding efficiency.
[0014] (2) In the present invention, the grinding motor operates and drives the two grinding rollers to rotate inward. At this time, the crushed lime blocks can be ground by the multiple grinding blocks on the surface of the two grinding rollers, and the lime blocks can be ground into powder. The ground lime powder can fall downward. The two vibration motors 1 and 2 are started by the control terminal. The two vibration motors 1 operate and drive the screening plate 1 to shake up and down. At this time, the ground lime powder can be screened by the multiple sieve holes 1, so that the lime particles that are not completely ground are retained on the surface of the screening plate 1, and the ground lime powder can fall downward through the multiple sieve holes 1. At this time, the lime particles on the surface of the screening plate 1 can be shaken and rolled down under the action of the vibration motor 1, so that the lime particles roll into the collection box on the right. The operation of the two vibration motors 2 can drive the screening plate 2 to shake. At this time, the fallen lime powder can be shaken and screened again on the surface of the second screening plate, so that the residual lime particles in the lime powder can roll through the surface of the second screening plate to the collecting box on the left, and the fine lime powder can be discharged downward through multiple screen holes, so that the lime powder is discharged outward through the discharge bin into the collecting trough placed below. After the grinding is completed, the two collecting boxes can be drawn out, so that the residual lime particles in the two collecting boxes can be put into the box body from the feed bin again for grinding. The ground lime powder can be screened by setting the screening component one and the screening component two, which is convenient for separately collecting the unground lime particles and lime powder in the lime powder, so that the unground lime particles can be ground again, and the separately collected lime particles of different sizes can be ground in multiple stages, thereby improving the quality of the ground lime powder. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.
[0016] Figure 1 This is a front perspective structural schematic diagram of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0017] Figure 2 This is a rear perspective structural schematic diagram of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0018] Figure 3 This is a schematic diagram of a front split stereoscopic structure of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0019] Figure 4 This is a schematic diagram of a side-view split stereoscopic structure of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0020] Figure 5 This is a schematic diagram of a front split stereoscopic structure of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0021] Figure 6 This is a three-dimensional structural schematic diagram of a screening component of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of a screening component of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of a collecting box of a multi-stage grinding and crushing device for preparing lime powder proposed by the utility model;
[0024] Fig. 9 This is an enlarged view of point A of a multi-stage grinding and crushing device for preparing lime powder proposed in the utility model.
[0025] Legend:
[0026] 1. Base; 101. Legs; 2. Box; 201. Control terminal; 202. Door; 203. Handle; 204. Feed bin; 205. Discharge bin; 206. Discharge port; 207. Movable slot 1; 208. Moving slot; 209. Movable slot 2; 3. Baffle plate; 301. L-shaped support plate; 302. Mounting slot; 4. Crushing device; 401. Crushing motor; 402. Rotating rod; 403. Crushing knife; 5. Grinding device; 501. Grinding motor; 502, grinding roller; 503, grinding block; 6, screening component one; 601, vibration motor one; 602, screening plate one; 603, sieve hole one; 604, connecting plate; 605, spring one; 606, spring two; 7, screening component two; 701, screening plate two; 702, fixing plate; 703, vibration motor two; 704, spring three; 705, sieve hole two; 8, discharge bin; 801, placement slot; 9, collection box; 901, handle. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0028] Please refer to Figure 1-9 The utility model provides a technical solution: a multi-stage grinding and crushing device for preparing lime powder, comprising: a base 1, four ends of the bottom of the base 1 are equipped with legs 101, a box 2 is fixedly embedded on the surface of the base 1, both sides of the inner cavity of the box 2 are fixedly equipped with baffle plates 3, an L-shaped support plate 301 is fixedly installed on one side of the inner cavity of the box 2, a mounting groove 302 is opened on the surface of the L-shaped support plate 301, and a feed bin 204 is installed on the top of the box 2. ， Feeding bin 204 的 The inner cavity is provided with two crushing devices 4, the inner cavity of the box body 2 is provided with two grinding devices 5, the inner cavity of the box body 2 is provided with a screening component 1 6, and the bottom of the inner cavity of the box body 2 is provided with a screening component 2 7. Discharge bins 8 are fixedly installed on both sides of the box body 2, and the bottom of the inner cavity of the two discharge bins 8 is provided with a placement groove 801. The inner cavity of the two discharge bins 8 is movably installed with a collecting box 9, and the surface of the two collecting boxes 9 is installed with a handle 901.
[0029] Specifically: four legs 101 support the base 1, which is convenient for the base 1 to support the installation of the box 2, and the two baffle plates 3 can prevent the ground lime powder from falling to the center of the inner cavity of the box 2. The surface of the L-shaped support plate 301 is provided with a mounting groove 302, which is convenient for setting and using the screening component 1 6. The ground lime powder can be shaken and screened through the screening component 1 6, so that the lime powder is screened by the screening component 1 6 and falls to the surface of the screening component 2 7, and the lime particles that are not ground in the lime powder are shaken and rolled into the collection box 9 on the right side by the screening component 1 6. The collection box 9 can be manually taken out using the handle 901, so that the collected lime particles can be collected again. The limestone is put into the box 2 for grinding again, and the screened lime can be shaken and screened again through the screening component 27, so that the fine lime powder screened out can be discharged from the discharge bin 205, and the remaining lime particles in the lime powder can be shaken and rolled into the collecting box 9 on the left through the screening component 27. By using the handle 901, the lime particles in the collecting box 9 can be put into the interior of the box 2 for grinding again. The placement groove 801 opened at the bottom of the inner cavity of the discharge bin 8 is convenient for placing the collecting box 9, and can limit the placement of the collecting box 9. One side of the collecting box 9 is higher than the other side, which can block the lime particles when they roll down to prevent the limestone from rolling out.
[0030] In this embodiment: a control terminal 201 is installed on the surface of the box body 2, a switch door 202 is installed on the surface of the box body 2 through a hinge, a handle 203 is installed on the surface of the switch door 202, a discharge bin 205 is installed at the bottom end of the box body 2, discharge ports 206 are opened on both sides of the box body 2, movable grooves 1 207 are opened at one end of both sides of the inner wall of the box body 2, a movable groove 208 is opened on one side of the inner wall of the box body 2, movable grooves 209 are opened on both sides of the inner wall of the box body 2, the feed bin 204 and the discharge bin 205 are interconnected with the interior of the box body 2, and the two discharge bins 8 are located on one side of the two discharge ports 206.
[0031] Specifically, the control terminal 201 is electrically connected to each electrically controlled device, and the switch door 202 can be opened using the handle 203, thereby facilitating the cleaning of the lime retained in the inner cavity of the box body 2. The limestone to be ground can be placed in the interior of the box body 2 through the feed bin 204, and the ground lime powder can be discharged into the collecting trough placed below the discharge bin 205 through the discharge bin 205. The two discharge ports 206 can discharge the lime particles left after the first screening and the second screening to the outside, and discharge them into the collecting boxes 9 movably placed inside the two discharge bins 8 respectively. The two movable troughs 1 207 are convenient for setting up the screening component 1 6, and the movable trough 208 and the movable trough 209 are convenient for setting up and using the screening component 2 7.
[0032] In this embodiment: the crushing device 4 includes a crushing motor 401, which is fixedly embedded in one side of the feed bin 204, and a rotating rod 402 is fixedly installed at the output end of the crushing motor 401. One end of the rotating rod 402 is connected to one side of the inner wall of the feed bin 204 through a bearing, and a plurality of crushing knives 403 are installed on the surface of the rotating rod 402.
[0033] Specifically, two crushing motors 401 can be started through the control terminal 201, and the crushing motor 401 operates and drives the rotating rod 402 to rotate. While the rotating rod 402 is rotating, multiple crushing knives 403 on its surface can crush the put in limestone. The two rotating rods 402 respectively drive the multiple crushing knives 403 on the surface to rotate inward, so that the put in limestone can be crushed and fall, and the two rotating rods 402 drive the crushing knives 403 during the crushing process, which can slow down the falling speed of the crushed lime, so as to facilitate better grinding and screening of the lime.
[0034] In this embodiment: the grinding device 5 includes a grinding motor 501, which is fixedly embedded in the top of one side of the box body 2, and a grinding roller 502 is fixedly installed at the output end of the grinding motor 501. One end of the grinding roller 502 is connected to the inner wall of the box body 2 through a bearing, and a plurality of grinding blocks 503 are installed on the surface of the grinding roller 502.
[0035] Specifically, two grinding motors 501 can be started through the control terminal 201. The grinding motors 501 operate and drive the two grinding rollers 502 to rotate inward respectively, so that the crushed and falling limestone is ground by multiple grinding blocks 503, so that the limestone is ground into powder by the opposite sides of the two grinding rollers 502.
[0036] In this embodiment: the screening component 6 includes two vibration motors 601, a screening plate 602 is installed on the top of the two vibration motors 601, a plurality of screening holes 603 are provided on the surface of the screening plate 602, connecting plates 604 are installed on both sides of the screening plate 602, two springs 605 are installed on one side of the two connecting plates 604, one end of the four springs 605 are installed on the bottom of the inner cavity of the two movable grooves 207, four springs 606 are installed on one side of the bottom end of the screening plate 602, one end of the four springs 606 are installed on the bottom of the inner cavity of the mounting groove 302, the two connecting plates 604 are movable inside the two movable grooves 207, one side of the screening plate 602 is movable inside the mounting groove 302, and the other side of the screening plate 602 is movable inside one of the discharge ports 206 and the discharge bin 8.
[0037] Specifically, two vibration motors 601 can be started synchronously through the control terminal 201. The operation of the vibration motor 601 can drive the screening plate 602 to vibrate up and down. While the screening plate 602 is vibrating, the ground and falling lime powder can be screened through the multiple sieve holes 603. At this time, the lime particles that are not completely ground remain on the surface of the screening plate 602, while the lime powder falls through the multiple sieve holes 603. When the screening plate 602 vibrates, the multiple springs 605 and spring 2 606 can rebound by vibration, and the two connecting plates 604 can rebound and move inside the movable groove 207 under the action of a spring 605. When the two connecting plates 604 move inside the movable groove 207, the movable groove 207 can limit the movable range of the connecting plates 604, and can support the screening plate 602 to vibrate. One side of the screening plate 602 can move inside the mounting groove 302 during vibration, and the size of the mounting groove 302 is consistent with the shaking range of the screening plate 602.
[0038] In this embodiment: the screening component 2 7 includes a screening plate 2 701, fixed plates 702 are installed on both sides of the screening plate 2 701, vibration motors 2 703 are installed at the bottom of the two fixed plates 702, springs 3 704 are installed at both ends of the bottom of the two fixed plates 702, one end of the four springs 3 704 is connected to the bottom of the inner cavity of the two movable grooves 209, a plurality of sieve holes 2 705 are opened on the surface of the screening plate 2 701, the two fixed plates 702 and the two vibration motors 2 703 are all movable inside the two movable grooves 209, one side of the screening plate 2 701 is movable inside the movable groove 208, and the other side of the screening plate 2 701 is movable inside another discharge port 206 and the discharge bin 8.
[0039] Specifically, the two vibration motors 2 703 can be started synchronously through the control terminal 201, and the vibration motor 2 703 can drive the screening plate 2 701 to shake up and down, and the sieve hole 2 705 can screen the screened lime powder again to obtain fine lime powder. When the screening plate 2 701 is shaking and screening, the four springs 3 704 on both sides can drive the fixed plate 702 to shake and rebound, so that the two fixed plates 702 can move inside the two movable grooves 209. The size of the movable groove 209 is in line with the shaking range of the screening plate 2 701, and does not affect the operation of the two vibration motors 2 703. One side of the screening plate 2 701 can move inside the movable groove 208 when shaking, and the movable groove 208 can provide space for the shaking range of the screening plate 2 701.
[0040] Working principle: the crushing motor 401, the grinding motor 501, the vibration motor 1 601, and the vibration motor 2 703 are electrically connected to the control terminal 201. When lime powder is prepared, the limestone is placed inside the feed bin 204. The crushing motor 401 and the grinding motor 501 can be started through the control terminal 201. The two crushing motors 401 operate and rotate the rotating rod 402. The two rotating rods 402 can drive the multiple crushing knives 403 on the surface to rotate inward at the same time. At this time, the input limestone can be pre-crushed by the multiple crushing knives 403. The multiple crushing knives 403 can squeeze and crush the limestone while the two rotating rods 402 rotate inward. The crushed lime can be passed through the installation gaps of the multiple crushing knives 403. The crushed limestone falls down, so that the crushed lime can fall slowly. By setting the crushing device 4, the crushing treatment can be performed before the lime is ground, and the larger limestone can be crushed before grinding, which can avoid the blockage of the grinding device 5 caused by direct grinding of the larger limestone. The limestone is pre-grinded and crushed by the crushing device 4, and then the grinding device 5 performs secondary grinding and crushing to achieve multi-stage grinding and crushing, which can improve the grinding efficiency; the grinding motor 501 operates and drives the two grinding rollers 502 to rotate inward. At this time, the crushed lime block can be ground by multiple grinding blocks 503 on the surface of the two grinding rollers 502, and the lime block can be ground into powder. The ground lime powder can fall downward, and the two vibration motors are started by the control terminal 201 One 601 and two vibration motors 703, the two vibration motors 601 operate and drive the screening plate 602 to shake up and down, at this time the ground lime powder can be screened through multiple sieve holes 603, so that the lime particles that are not completely ground are retained on the surface of the screening plate 602, and the ground lime powder can pass through multiple sieve holes 603 and fall downward, at this time the lime particles on the surface of the screening plate 602 can be shaken and rolled down under the action of the vibration motor 601, so that the lime particles roll into the collection box 9 on the right, the two vibration motors 703 operate to drive the screening plate 701 to shake, at this time the fallen lime powder can be shaken and screened again on the surface of the screening plate 701, so that the lime particles remaining in the lime powder The surface of the screening plate 2 701 rolls down to the collecting box 9 on the left, and the fine lime powder can be discharged downward through a plurality of screen holes 2 705, so that the lime powder is discharged outward through the discharge bin 205 into the collecting trough placed below. After grinding, the two collecting boxes 9 can be drawn out, so that the lime particles remaining in the two collecting boxes 9 can be put into the interior of the box body 2 from the feed bin 204 for grinding again. The ground lime powder can be screened by setting the screening component 1 6 and the screening component 2 7, so that the unground lime particles and lime powder in the lime powder can be collected separately, so that the unground lime particles can be ground again, and the separately collected lime particles of different sizes can be ground in multiple stages, thereby improving the quality of the ground lime powder.
[0041] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.
Claims
1. A multi-stage grinding and crushing device for preparing lime powder, characterized in that: include: A base (1), wherein four ends of the bottom of the base (1) are all equipped with supporting legs (101), a box body (2) is fixedly embedded on the surface of the base (1), and material blocking plates (3) are fixedly installed on both sides of the inner cavity of the box body (2), an L-shaped support plate (301) is fixedly installed on one side of the inner cavity of the box body (2), and a mounting groove (302) is opened on the surface of the L-shaped support plate (301), and a feed bin (204) is installed on the top of the box body (2) ， The inner cavity of the feed bin (204) is provided with two crushing devices (4), the inner cavity of the box body (2) is provided with two grinding devices (5), the inner cavity of the box body (2) is provided with a screening component one (6), and the bottom of the inner cavity of the box body (2) is provided with a screening component two (7), both sides of the box body (2) are fixedly installed with discharge bins (8), the bottom of the inner cavity of the two discharge bins (8) are provided with placement grooves (801), the inner cavities of the two discharge bins (8) are movably installed with collection boxes (9), and the surfaces of the two collection boxes (9) are installed with handles (901).
2. A multi-stage grinding and pulverizing device for preparing lime powder according to claim 1, characterized in that: A control terminal (201) is installed on the surface of the box (2); a switch door (202) is installed on the surface of the box (2) via a hinge; a handle (203) is installed on the surface of the switch door (202); a discharge bin (205) is installed at the bottom end of the box (2); discharge ports (206) are provided on both sides of the box (2); movable grooves (207) are provided at one end of both sides of the inner wall of the box (2); a movable groove (208) is provided on one side of the inner wall of the box (2); movable grooves (209) are provided on both sides of the inner wall of the box (2); the feed bin (204) and the discharge bin (205) are interconnected with the interior of the box (2); and the two discharge bins (8) are located on one side of the two discharge ports (206).
3. The multi-stage grinding and pulverizing device for preparing lime powder according to claim 1, characterized in that: The pulverizing device (4) comprises a pulverizing motor (401), the pulverizing motor (401) being fixedly embedded in one side of a feed bin (204), a rotating rod (402) being fixedly mounted on the output end of the pulverizing motor (401), one end of the rotating rod (402) being connected to one side of an inner wall of the feed bin (204) via a bearing, and a plurality of pulverizing knives (403) being mounted on the surface of the rotating rod (402).
4. The multi-stage grinding and pulverizing device for preparing lime powder according to claim 1, characterized in that: The grinding device (5) comprises a grinding motor (501), the grinding motor (501) being fixedly embedded in the top of one side of a box body (2), a grinding roller (502) being fixedly mounted on the output end of the grinding motor (501), one end of the grinding roller (502) being connected to the inner wall of the box body (2) via a bearing, and a plurality of grinding blocks (503) being mounted on the surface of the grinding roller (502).
5. The multi-stage grinding and pulverizing device for preparing lime powder according to claim 1, characterized in that: The screening component (6) comprises two vibration motors (601), a screening plate (602) is installed on the top of the two vibration motors (601), a plurality of screening holes (603) are provided on the surface of the screening plate (602), connecting plates (604) are installed on both sides of the screening plate (602), two springs (605) are installed on one side of the two connecting plates (604), and one end of the four springs (605) is installed on two movable grooves (207). At the bottom of the inner cavity, four springs (606) are installed on one side of the bottom end of the screening plate (602), one end of each of the four springs (606) is installed at the bottom of the inner cavity of the mounting groove (302), the two connecting plates (604) are movable inside the two movable grooves (207), one side of the screening plate (602) is movable inside the mounting groove (302), and the other side of the screening plate (602) is movable inside one of the discharge ports (206) and the discharge bin (8).
6. The multi-stage grinding and pulverizing device for preparing lime powder according to claim 1, characterized in that: The screening component 2 (7) comprises a screening plate 2 (701), both sides of which are provided with fixed plates (702), the bottoms of the two fixed plates (702) are provided with vibration motors 2 (703), both ends of the bottoms of the two fixed plates (702) are provided with springs 3 (704), one end of the four springs 3 (704) is connected to the bottom of the inner cavity of the two movable grooves 2 (209), a plurality of screening holes 2 (705) are provided on the surface of the screening plate 2 (701), the two fixed plates (702) and the two vibration motors 2 (703) are movable inside the two movable grooves 2 (209), one side of the screening plate 2 (701) is movable inside the movable groove (208), and the other side of the screening plate 2 (701) is movable inside another discharge port (206) and a discharge bin (8).