Zinc powder grinding device and control method thereof

Abstract

The invention discloses a zinc powder grinding device and a control method thereof, and relates to the technical field of grinding devices. The device comprises a main frame; a primary crushing bin and a fine grinding assembly are fixedly connected into the main frame, a driving assembly and a distance adjusting assembly are arranged outside the primary crushing bin, and a feeding hopper is mounted at the top of the primary crushing bin; the primary crushing bin comprises a bin body, a plurality of parallel fixed grinding rollers are rotationally connected into the bin body, passing openings located between the adjacent fixed grinding rollers are formed in the two sides of the inner wall of the bin body correspondingly, U-shaped groove plates are fixedly connected to the two sides of the outer portion of the bin body correspondingly, and sliding plates are slidably connected into the two U-shaped groove plates correspondingly. And a plurality of mutually parallel movable grinding rollers are rotationally connected between the two sliding plates. The multiple sets of fixed grinding rollers and the movable grinding rollers are matched to preliminarily crush zinc raw materials entering the bin body, accurate grinding is conducted through the rotary grinding rings and the fixed grinding rings, the grinding efficiency is improved, and zinc powder with the uniform particle size is produced.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding devices, and in particular relates to a zinc powder grinding device and a control method thereof. Background Art

[0002] As the core equipment for deep processing of zinc raw materials, zinc powder grinding device converts lump or granular zinc into fine powder that meets industrial needs through mechanical force. However, existing grinding devices must first crush the bulk zinc raw materials before the grinding process. This step-by-step processing mode not only increases the complexity of the overall processing process, but also reduces the production efficiency of the final zinc powder product.

[0003] To this end, we provide a zinc powder grinding device and a control method thereof to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a zinc powder grinding device and a control method thereof, which solves the problems of low grinding efficiency and complicated pre-treatment process of the existing zinc powder grinding device through a step-by-step grinding method.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention provides a zinc powder grinding device and a control method thereof, comprising a main frame; a primary crushing chamber and a fine grinding assembly are fixedly connected to the interior of the main frame; a driving assembly and a distance adjustment assembly are provided outside the primary crushing chamber; and a feed hopper is installed on the top of the primary crushing chamber; The primary crushing bin includes a bin body fixedly connected to the inside of the main frame, and a plurality of fixed grinding rollers parallel to each other are rotatably connected to the inside of the bin body. Passage openings located between adjacent fixed grinding rollers are opened on both sides of the inner wall of the bin body, and U-shaped groove plates are fixedly connected to both sides of the outside of the bin body, and sliding plates are slidably connected to the inside of the two U-shaped groove plates, and a plurality of movable grinding rollers parallel to each other are rotatably connected between the two sliding plates, and the rotating shafts of the movable grinding rollers are located inside the corresponding passage openings, and a plurality of sliding openings are opened equidistantly in the horizontal direction inside the sliding plate, and the rotating shafts of the fixed grinding rollers are located inside the corresponding sliding openings, and two mounting seats are fixedly connected to the outside of one of the sliding plates, and a mounting frame is fixedly connected to the side of the bin body opposite to the mounting seat.

[0006] The present invention is further configured such that the drive assembly includes a fixed plate fixedly connected to a side perpendicular to the U-shaped groove plate and a drive motor fixedly connected to the outside of the main frame, the internal rotation of the fixed plate is connected to two sleeves, the outsides of the two sleeves are fixedly connected to driven sprockets, the output end of the drive motor is fixedly connected to the drive sprocket, and the drive sprocket and the external transmission of the two driven sprockets are connected by a chain.

[0007] The present invention is further configured such that the interior of the mounting frame is rotatably connected to a first drive shaft, the exterior of the first drive shaft is fixedly connected to a plurality of first drive bevel gears, and the ends of the plurality of fixed grinding rollers adjacent to the first drive bevel gears are fixedly connected to first driven bevel gears meshing with the corresponding first drive bevel gears; The two mounting seats are internally rotatably connected to a second drive shaft, the outside of the second drive shaft is fixedly connected to a plurality of second drive bevel gears, and the ends of the rotating shafts of the plurality of movable grinding rollers close to the second drive bevel gears are fixedly connected to a second driven bevel gear meshing with the corresponding second drive bevel gears.

[0008] The present invention is further configured such that the interior of the sleeve is a through hexagonal channel, and the second drive shaft and the first drive shaft are movably plugged into the interiors of the two sleeves at one end facing the sleeve.

[0009] The present invention is further configured such that the distance adjustment assembly includes an adjustment frame slidably connected to the inside of the two U-shaped groove plates, an adjustment screw rotatably connected to the outside of the warehouse body is threadedly sleeved at the center of the adjustment frame, and a handwheel is fixedly connected to the end of the adjustment screw facing away from the warehouse body.

[0010] The present invention is further configured such that a scale is fixedly connected to the outside of the bin body, and the scale is movably sleeved on the inside of the adjustment frame.

[0011] The present invention is further configured such that the fine grinding assembly includes an outer shell fixedly connected to the inside of the main frame, and the outer shell is communicated with the bottom outlet of the bin body, the inner wall of the outer shell is fixedly connected with a fixed grinding ring, the inside of the main frame is fixedly connected with a base frame, the top of the base frame is fixedly connected with a fixed ring, the outside of the fixed ring is rotatably connected with a rotating frame, the outside of the rotating frame is fixedly connected with a rotating grinding ring, and the rotating grinding ring is located at the center of the fixed grinding ring, a grinding motor is fixedly connected at the top center of the base frame, and the rotating frame is fixedly connected to the output end of the grinding motor.

[0012] The present invention is further configured such that a conical upper air guide cover is fixedly connected to the top of the rotating frame, a lower air guide cover is fixedly connected to the bottom of the rotating frame, a discharge trough is fixedly connected to the outside of the base frame, and the lower edge of the lower air guide cover is located inside the discharge trough, and a vibrator for discharging is installed at the bottom of the discharge trough.

[0013] The present invention also provides a control method for a zinc powder grinding device, which grinds zinc powder according to the following steps: S1. Preparation: According to the characteristics of the zinc raw material to be ground and the required grinding particle size, turn the hand wheel to drive the adjusting screw to rotate, so that the adjusting frame slides in the U-shaped groove plate, and then adjust the distance between the movable grinding roller and the fixed grinding roller. During the adjustment process, you can observe the scale to ensure that the distance meets the requirements; S2. Feeding: Pour the zinc raw material to be ground into the primary crushing bin through the feed hopper; S3, primary crushing: Start the drive motor, and the output end of the drive motor drives the drive sprocket to rotate, and through the chain transmission, the two driven sprockets drive their respective casings to rotate. Since the second drive shaft and the first drive shaft are movably connected to the inside of the two casings, and the first drive bevel gear on the first drive shaft is meshed with the first driven bevel gear on the fixed grinding roller, and the second drive bevel gear on the second drive shaft is meshed with the second driven bevel gear on the movable grinding roller, the fixed grinding roller and the movable grinding roller are driven to rotate in opposite directions, and the zinc powder entering the silo is primary crushed and ground. The crushed zinc powder enters the fine grinding assembly through the bottom of the silo; S4. Fine grinding: Start the grinding motor. The output end of the grinding motor drives the rotating frame to rotate, and then the rotating grinding ring rotates at the center of the fixed grinding ring. The zinc powder after primary crushing enters the outer shell and is finely ground under the action of the fixed grinding ring and the rotating grinding ring. During the grinding process, the upper guide cover guides the zinc powder to the grinding area, and the lower guide cover guides the ground zinc powder to the discharge chute, and finally discharges it through the discharge chute.

[0014] The present invention has the following beneficial effects: The first gear and the second gear are connected with each other to form a circle, and the first gear and the second gear are connected with each other to form a circle, and the first gear and the second gear are connected with each other to form a circle. 2. The present invention enables the operator to rotate the handwheel of the distance adjustment component, which drives the adjusting screw to rotate, and utilizes the threaded transmission to make the adjusting frame slide in the two U-shaped groove plates. The adjusting frame is connected to the sliding plate, which drives the movable grinding roller to slide in the U-shaped groove plates, thereby realizing the adjustment of the distance between the movable grinding roller and the fixed grinding roller, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts. Figure 1 It is a schematic structural diagram of the front side of the present invention; Figure 2 It is a structural schematic diagram of the back side of the present invention; Figure 3 This is a schematic structural diagram of the primary crushing bin of the present invention; Figure 4 It is a schematic structural diagram of the driving assembly and the distance adjustment assembly of the present invention; Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 6 Schematic diagram of the explosion structure of the fine grinding assembly of the present invention; In the accompanying drawings, the components represented by the reference numerals are as follows: 100, main frame; 200, primary crushing chamber; 201, chamber body; 202, through port; 203, U-shaped groove plate; 204, sliding plate; 205, sliding port; 206, mounting seat; 207, mounting frame; 208, fixed grinding roller; 209, movable grinding roller; 300, drive assembly; 301, fixed plate; 302, sleeve; 303, driven sprocket; 304, drive motor; 305, drive sprocket; 306, first drive shaft; 307, first drive bevel gear; 308, first driven bevel gear; 309, second drive shaft Drive shaft; 310, second drive bevel gear; 311, second driven bevel gear; 312, chain; 400, pitch adjustment assembly; 401, adjustment frame; 402, adjustment screw; 403, handwheel; 404, scale; 500, feed hopper; 600, fine grinding assembly; 601, housing; 602, fixed grinding ring; 603, base frame; 604, fixed ring; 605, rotating frame; 606, rotating grinding ring; 607, grinding motor; 608, upper air guide cover; 609, lower air guide cover; 610, discharge chute; 611, vibrator. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example 1

[0017] See also Figures 1 to 6 The present invention provides a zinc powder grinding device and a control method thereof, comprising a main frame 100; a primary crushing chamber 200 and a fine grinding assembly 600 are fixedly connected to the interior of the main frame 100; a driving assembly 300 and a distance adjustment assembly 400 are provided on the exterior of the primary crushing chamber 200; a feed hopper 500 is installed on the top of the primary crushing chamber 200; the combination of the primary crushing chamber 200 and the fine grinding assembly 600 realizes step-by-step processing of zinc powder from preliminary crushing to fine grinding, effectively improving the grinding efficiency; The primary crushing bin 200 includes a bin body 201 fixedly connected to the inside of the main frame 100, a plurality of fixed grinding rollers 208 parallel to each other are rotatably connected to the inside of the bin body 201, and a through hole 202 located between adjacent fixed grinding rollers 208 is opened on both sides of the inner wall of the bin body 201, and a U-shaped groove plate 203 is fixedly connected to both sides of the outside of the bin body 201, and a sliding plate 204 is slidably connected to the inside of the two U-shaped groove plates 203, and a plurality of movable grinding rollers 209 parallel to each other are rotatably connected between the two sliding plates 204, and the rotating shafts of the movable grinding rollers 209 are located inside the corresponding through holes 202, and a plurality of sliding plates 204 are equidistantly opened in the horizontal direction. The movable opening 205 and the rotating shaft of the fixed grinding roller 208 are located inside the corresponding sliding opening 205, and two mounting seats 206 are fixedly connected to the outer side of one sliding plate 204, and a mounting frame 207 is fixedly connected to the side of the bin body 201 opposite to the mounting seat 206. The fixed grinding roller 208 and the movable grinding roller 209 in the primary crushing bin 200 are arranged in coordination to form multiple groups of fixed grinding rollers and movable grinding rollers, thereby improving the grinding efficiency; the movable grinding roller 209 can slide in the U-shaped groove plate 203, and the rotating shaft cooperates with the through opening 202 and the sliding opening 205, so that the position of the movable grinding roller 209 is adjustable, which can adapt to the preliminary grinding of different particle size requirements and improve the applicability of the device.

[0018] Specifically, the drive assembly 300 includes a fixed plate 301 fixedly connected to a surface perpendicular to the U-shaped groove plate 203 and a drive motor 304 fixedly connected to the outside of the main frame 100. The interior of the fixed plate 301 is rotatably connected to two sleeves 302, and the exteriors of the two sleeves 302 are fixedly connected to driven sprockets 303. The output end of the drive motor 304 is fixedly connected to a drive sprocket 305, and the drive sprocket 305 is externally connected to the two driven sprockets 303 via a chain 312. The mounting frame 207 is internally rotatably connected to a first drive shaft 306, and the first drive shaft 306 is externally fixedly connected to a plurality of first drive bevel gears 307. The ends of the plurality of fixed grinding rollers 208 close to the first drive bevel gears 307 are each fixedly connected to a first driven bevel gear 308 meshing with the corresponding first drive bevel gear 307. The two mounting seats 206 are internally rotatably connected to a second drive shaft 309, and the exterior of the second drive shaft 309 is fixedly connected to a plurality of second drive bevel gears 310. The ends of the rotating shafts of the plurality of movable grinding rollers 209 close to the second drive bevel gears 310 are all fixedly connected to second driven bevel gears 311 that mesh with the corresponding second drive bevel gears 310. The fine grinding assembly 600 includes an outer shell 601 fixedly connected to the inside of the main frame 100, and the outer shell 601 is connected to the bottom outlet of the warehouse body 201. The inner wall of the outer shell 601 is fixedly connected to a fixed grinding ring 602. The inside of the main frame 100 is fixedly connected to a base frame 603. The top of the base frame 603 is fixedly connected to a fixed ring 604. The outside of the fixed ring 604 is rotatably connected to a rotating frame 605. The outside of the rotating frame 605 is fixedly connected to a rotating grinding ring 606, and the rotating grinding ring 606 is located at the center of the fixed grinding ring 602. A grinding motor 607 is fixedly connected to the top center of the base frame 603, and the rotating frame 605 is fixedly connected to the output end of the grinding motor 607.

[0019] Furthermore, the interior of the sleeve 302 is a through hexagonal channel, and the second drive shaft 309 and the first drive shaft 306 are movably plugged into the interior of the two sleeves 302 at one end facing the sleeve 302; The top of the rotating frame 605 is fixedly connected to a conical upper air guide cover 608, the bottom of the rotating frame 605 is fixedly connected to a lower air guide cover 609, the outside of the base frame 603 is fixedly connected to a discharge trough 610, and the lower edge of the lower air guide cover 609 is located inside the discharge trough 610. A vibrator 611 for discharging is installed at the bottom of the discharge trough 610.

[0020] The operation process of this embodiment is as follows: when the zinc raw material needs to be ground, the driving motor 304 is started, and the driving sprocket 305 rotates under the drive of the driving motor 304, and the two driven sprockets 303 are driven by the chain 312, so that the two driven sprockets 303 rotate synchronously, thereby driving the sleeve 302 to rotate. Since the interior of the sleeve 302 is a through hexagonal channel, the second driving shaft 309 and the first driving shaft 306 are respectively inserted into the two sleeves 302, so the rotation of the sleeve 302 can drive the first driving shaft 306 and the second driving shaft 309 to rotate synchronously. After that, when the first driving shaft 306 rotates, the multiple second driving shafts 309 fixed thereon rotate synchronously. A driving bevel gear 307 rotates accordingly, and a first driven bevel gear 308 meshing with the first driving bevel gear 307 drives the fixed grinding roller 208 to start rotating. Similarly, the second driving shaft 309 rotates, and the second driving bevel gear 310 on it drives the second driven bevel gear 311 meshing with it, causing the movable grinding roller 209 to start rotating. Multiple sets of fixed grinding rollers 208 and movable grinding rollers 209 can perform preliminary crushing on the zinc raw material entering the bin 201. Multiple sets of fixed grinding rollers 208 and movable grinding rollers 209 work simultaneously, greatly improving the grinding efficiency and being able to quickly crush larger particles of zinc powder into smaller particles. Subsequently, the zinc powder that has been initially crushed by the primary crushing bin 200 enters the fine grinding assembly 600 through the channel connecting the bin body 201 and the outer shell 601, and then the grinding motor 607 is started. The output end of the grinding motor 607 drives the rotating frame 605 to rotate, thereby causing the rotating grinding circle 606 to rotate at the center of the fixed grinding circle 602, and a fine grinding space is formed between the fixed grinding circle 602 and the rotating grinding circle 606, so that the entering zinc powder is further finely ground. During this process, the upper guide cover 608 on the top of the rotating frame 605 can guide the zinc powder to enter the grinding area smoothly, and the lower guide cover 609 at the bottom guides the ground zinc powder to the discharge trough 610 for easy collection. The step-by-step processing method from initial crushing to fine grinding effectively improves the grinding efficiency, and can produce zinc powder with more uniform particle size and better meets the requirements. Example 2

[0021] See also Figure 1 and Figure 4On the basis of the specific embodiment 1, the distance adjustment component 400 includes an adjustment frame 401 slidably connected to the inside of the two U-shaped groove plates 203, and the center of the adjustment frame 401 is threadedly sleeved with an adjustment screw 402 rotatably connected to the outside of the warehouse body 201, and the end of the adjustment screw 402 away from the warehouse body 201 is fixedly connected to a handwheel 403. The distance adjustment component 400 rotates the adjustment screw 402 through the handwheel 403, and uses the principle of thread transmission to drive the adjustment frame 401 to slide in the U-shaped groove plate 203, thereby adjusting the distance between the movable grinding roller 209 and the fixed grinding roller 208, so that the operator can flexibly adjust the grinding gap according to different grinding requirements and achieve precise control of the zinc powder grinding particle size.

[0022] Specifically, a scale 404 is fixedly connected to the outside of the bin body 201, and the scale 404 is movably sleeved on the inside of the adjustment frame 401. The setting of the scale 404 provides an accurate scale reference for the movement of the adjustment frame 401, so that the operator can intuitively obtain the adjustment amount when adjusting the distance between the movable grinding roller 209 and the fixed grinding roller 208, further improving the accuracy and efficiency of the grinding gap adjustment.

[0023] The operation process of this embodiment is as follows: when the grinding particle size needs to be adjusted according to different grinding requirements, the operator rotates the handwheel 403 of the distance adjustment component 400, and the handwheel 403 drives the adjusting screw 402 to rotate. Using the principle of screw transmission, the adjusting frame 401 slides in the two U-shaped groove plates 203. Since the adjusting frame 401 is connected to the sliding plate 204, the sliding plate 204 will drive the movable grinding roller 209 to slide in the U-shaped groove plate 203, thereby adjusting the distance between the movable grinding roller 209 and the fixed grinding roller 208. During the adjustment process, the scale 404 outside the bin body 201 provides the operator with an accurate scale reference. The operator can intuitively obtain the moving distance of the adjusting frame 401, that is, the adjustment amount of the distance between the movable grinding roller 209 and the fixed grinding roller 208, from the scale 404. Through the distance adjustment, the applicability of the device is improved, and the situation where the zinc powder particle size does not meet the requirements due to improper grinding gap is avoided. Example 3

[0024] This embodiment is the third embodiment of the present invention. This embodiment provides a control method for a zinc powder grinding device, which grinds zinc powder according to the following steps: S1. Preparation: According to the characteristics of the zinc raw material to be ground and the required grinding particle size, the adjustment screw 402 is rotated by turning the hand wheel 403, so that the adjustment frame 401 slides in the U-shaped groove plate 203, thereby adjusting the distance between the movable grinding roller 209 and the fixed grinding roller 208. During the adjustment process, the scale 404 can be observed to ensure that the distance meets the requirements; S2. Feeding: Pour the zinc raw material to be ground into the silo 201 of the primary crushing silo 200 through the feed hopper 500; S3, primary crushing: start the drive motor 304, and the output end of the drive motor 304 drives the drive sprocket 305 to rotate, which is transmitted through the chain 312, so that the two driven sprockets 303 drive their respective sleeves 302 to rotate. Since the second drive shaft 309 and the first drive shaft 306 are movably inserted into the two sleeves 302, and the first drive bevel gear 307 on the first drive shaft 306 is meshed with the first driven bevel gear 308 on the fixed grinding roller 208, and the second drive bevel gear 310 on the second drive shaft 309 is meshed with the second driven bevel gear 311 on the movable grinding roller 209, the fixed grinding roller 208 and the movable grinding roller 209 are driven to rotate in opposite directions, thereby performing primary crushing and grinding on the zinc powder entering the bin body 201, and the crushed zinc powder enters the fine grinding assembly 600 through the bottom of the bin body 201; S4, fine grinding: Start the grinding motor 607, and the output end of the grinding motor 607 drives the rotating frame 605 to rotate, thereby causing the rotating grinding ring 606 to rotate at the center of the fixed grinding ring 602. The zinc powder after primary crushing enters the shell 601 and is finely ground under the action of the fixed grinding ring 602 and the rotating grinding ring 606. During the grinding process, the upper guide cover 608 guides the zinc powder to the grinding area, and the lower guide cover 609 guides the ground zinc powder to the discharge chute 610, and finally the zinc powder is discharged from the device through the discharge chute 610.

[0025] In addition, it should be noted that the components not described in detail herein are prior art.

[0026] It is important to note that the configuration and arrangement of the present application as shown in various exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure should readily understand that many modifications are possible (e.g., variations in the size, scale, structure, shape, and proportions of various components, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of an element may be inverted or otherwise altered, and the nature, number, or position of discrete elements may be modified or changed. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a particular embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0027] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0028] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

Claims

1. A zinc powder grinding device, comprising a main frame (100); characterized in that: A primary crushing chamber (200) and a fine grinding assembly (600) are fixedly connected to the interior of the main frame (100); a driving assembly (300) and a pitch adjustment assembly (400) are provided on the exterior of the primary crushing chamber (200); and a feed hopper (500) is installed on the top of the primary crushing chamber (200); The primary crushing bin (200) comprises a bin body (201) fixedly connected to the inside of the main frame (100); a plurality of mutually parallel fixed grinding rollers (208) are rotatably connected to the inside of the bin body (201); passages (202) located between adjacent fixed grinding rollers (208) are provided on both sides of the inner wall of the bin body (201); U-shaped groove plates (203) are fixedly connected to the outside of the bin body (201); sliding plates (204) are slidably connected to the inside of the two U-shaped groove plates (203); and the two sliding plates (204) are slidably connected to the inside of the two U-shaped groove plates (203). There are multiple parallel movable grinding rollers (209) rotatably connected between them, and the rotating shafts of the movable grinding rollers (209) are located inside the corresponding through openings (202). The interior of the sliding plate (204) is provided with multiple sliding openings (205) equidistantly along the horizontal direction, and the rotating shafts of the fixed grinding rollers (208) are located inside the corresponding sliding openings (205). The outer side of one of the sliding plates (204) is fixedly connected to two mounting seats (206), and the side of the bin body (201) opposite to the mounting seat (206) is fixedly connected to a mounting frame (207).

2. A zinc powder grinding device according to claim 1, characterized in that: The driving assembly (300) comprises a fixed plate (301) fixedly connected to a surface perpendicular to the U-shaped groove plate (203) and a driving motor (304) fixedly connected to the outside of the main frame (100); the interior of the fixed plate (301) is rotatably connected to two sleeves (302); the exteriors of the two sleeves (302) are fixedly connected to driven sprockets (303); the output end of the driving motor (304) is fixedly connected to a driving sprocket (305); and a chain (312) is connected to the exterior of the driving sprocket (305) and the two driven sprockets (303).

3. A zinc powder grinding device according to claim 1, characterized in that: The interior of the mounting frame (207) is rotatably connected to a first drive shaft (306), the exterior of the first drive shaft (306) is fixedly connected to a plurality of first drive bevel gears (307), and one end of each of the plurality of fixed grinding rollers (208) close to the first drive bevel gear (307) is fixedly connected to a first driven bevel gear (308) meshing with the corresponding first drive bevel gear (307); The two mounting seats (206) are internally rotatably connected to a second drive shaft (309), the second drive shaft (309) is externally fixedly connected to a plurality of second drive bevel gears (310), and the ends of the rotating shafts of the plurality of movable grinding rollers (209) close to the second drive bevel gear (310) are all fixedly connected to a second driven bevel gear (311) meshing with the corresponding second drive bevel gear (310).

4. A zinc powder grinding device according to claim 2 or 3, characterized in that: The interior of the sleeve (302) is a through hexagonal channel, and the ends of the second drive shaft (309) and the first drive shaft (306) facing the sleeve (302) are movably plugged into the interiors of the two sleeves (302).

5. A zinc powder grinding device according to claim 1, characterized in that: The distance adjustment assembly (400) comprises an adjustment frame (401) slidably connected to the inside of two U-shaped groove plates (203); an adjustment screw (402) rotatably connected to the outside of the warehouse body (201) is threadedly sleeved at the center of the adjustment frame (401); and a handwheel (403) is fixedly connected to one end of the adjustment screw (402) facing away from the warehouse body (201).

6. A zinc powder grinding device according to claim 5, characterized in that: The exterior of the warehouse body (201) is fixedly connected to a scale (404), and the scale (404) is movably sleeved inside the adjustment frame (401).

7. A zinc powder grinding device according to claim 1, characterized in that: The fine grinding assembly (600) comprises a shell (601) fixedly connected to the inside of the main frame (100), and the shell (601) is communicated with the bottom outlet of the bin body (201); the inner wall of the shell (601) is fixedly connected to a fixed grinding ring (602); the inside of the main frame (100) is fixedly connected to a base frame (603); the top of the base frame (603) is fixedly connected to a fixed ring (604); the outside of the fixed ring (604) is rotatably connected to a rotating frame (605); the outside of the rotating frame (605) is fixedly connected to a rotating grinding ring (606), and the rotating grinding ring (606) is located at the center of the fixed grinding ring (602); the top center of the base frame (603) is fixedly connected to a grinding motor (607), and the rotating frame (605) is fixedly connected to the output end of the grinding motor (607).

8. A zinc powder grinding device according to claim 7, characterized in that: A conical upper air guide cover (608) is fixedly connected to the top of the rotating frame (605), a lower air guide cover (609) is fixedly connected to the bottom of the rotating frame (605), a discharge trough (610) is fixedly connected to the outside of the base frame (603), and the lower edge of the lower air guide cover (609) is located inside the discharge trough (610). A vibrator (611) for discharging is installed at the bottom of the discharge trough (610).

9. A control method for a zinc powder grinding device, characterized in that: The zinc powder grinding device according to any one of claims 1 to 8 controls the grinding of zinc powder according to the following steps, specifically comprising the following steps: S1. Preparation: According to the characteristics of the zinc raw material to be ground and the required grinding particle size, the adjusting screw (402) is rotated by turning the hand wheel (403), so that the adjusting frame (401) slides in the U-shaped groove plate (203), thereby adjusting the distance between the movable grinding roller (209) and the fixed grinding roller (208). During the adjustment process, the distance can be ensured to meet the requirements by observing the scale (404); S2. Feeding: Pour the zinc raw material to be ground into the silo (201) of the primary crushing silo (200) through the feed hopper (500); S3, primary crushing: starting the driving motor (304), the output end of the driving motor (304) drives the driving sprocket (305) to rotate, and the two driven sprockets (303) drive their respective sleeves (302) to rotate through the chain (312). Since the second driving shaft (309) and the first driving shaft (306) are respectively movably plugged into the inside of the two sleeves (302), and the first driving bevel gear (307) on the first driving shaft (306) is meshed with the first driven bevel gear (308) on the fixed grinding roller (208), and the second driving bevel gear (310) on the second driving shaft (309) is meshed with the second driven bevel gear (311) on the movable grinding roller (209), the fixed grinding roller (208) and the movable grinding roller (209) are driven to rotate in opposite directions, and the zinc powder entering the silo (201) is primary crushed and ground. The crushed zinc powder enters the fine grinding assembly (600) through the bottom of the silo (201); S4, fine grinding: start the grinding motor (607), the output end of the grinding motor (607) drives the rotating frame (605) to rotate, thereby causing the rotating grinding ring (606) to rotate at the center of the fixed grinding ring (602), and the zinc powder after primary crushing enters the shell (601), and is finely ground under the action of the fixed grinding ring (602) and the rotating grinding ring (606). During the grinding process, the upper guide cover (608) guides the zinc powder to the grinding area, and the lower guide cover (609) guides the ground zinc powder to the discharge chute (610), and finally the zinc powder is discharged through the discharge chute (610) to the discharge device.

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