Horizontal multi-rotor mill

Abstract

The application discloses a kind of horizontal multi-rotor flour mill of flour processing device technical field, including grinding box, grinding unit and powder selecting unit, the grinding box is fixedly installed on support seat, the both ends of the grinding box are respectively detachably installed with first end cover and second end cover, the first end cover is fixedly installed with the hopper of material feeding to grinding box interior, the grinding unit includes the coarse grinding assembly for receiving material from hopper and the fine grinding assembly for receiving the feed port of coarse grinding assembly, the coarse grinding assembly is circulated grinding to material while conveying along axial direction, the fine grinding assembly is further circulated grinding to material not sufficiently ground by coarse grinding assembly while conveying along axial direction, the present application is to solve the problem that the existing horizontal multi-rotor flour mill is difficult to realize meticulous, uniform grinding to material, inconvenient to meet the demand of high-precision grinding, and the grinding efficiency of material is low, it is difficult to control the quality of final product.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically a horizontal multi-rotor grinding mill. Background Technology

[0002] The traditional wheat flour processing flow mainly consists of two steps: dehulling and grinding. The grinding process determines the quality and texture of the finished flour. Traditional flour milling equipment primarily uses a flour milling machine, which is mainly a dual-structure machine consisting of two independent parts. Each part mainly comprises two grinding rollers, two feeding rollers, and some auxiliary mechanisms. When using a traditional flour milling machine to grind moistened wheat, the performance of the two grinding rollers directly determines the processed flour quality and yield.

[0003] Existing horizontal multi-rotor grinding mills, due to the lack of an effective grinding, grading, and screening mechanism, struggle to achieve fine and uniform grinding of materials. This results in a wide range of fineness distribution in the final grinding products, failing to meet the requirements of high-precision grinding. Furthermore, some materials are difficult to grind sufficiently, leading to low grinding efficiency. The inability to effectively separate fully ground powder from under-ground materials during the grinding process also results in unstable final product quality and increased equipment energy consumption. Therefore, those skilled in the art have provided a horizontal multi-rotor grinding mill to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a horizontal multi-rotor grinding mill to solve the problems of existing horizontal multi-rotor grinding mills, which are difficult to achieve fine and uniform grinding of materials, are not convenient to meet the needs of high-precision grinding, have low material grinding efficiency, and are difficult to control the quality of the final product.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a horizontal multi-rotor grinding mill, comprising:

[0006] A grinding box is fixedly installed on a support base. A first end cover and a second end cover are detachably installed at both ends of the grinding box. A feeding hopper for feeding material into the grinding box is fixedly installed on the first end cover.

[0007] The grinding unit includes a coarse grinding component for receiving material from the hopper and a fine grinding component for receiving the feed inlet of the coarse grinding component. The coarse grinding component circulates and grinds the material while conveying it axially. The fine grinding component further circulates and grinds the material that has not been sufficiently ground by the coarse grinding component while conveying it axially. Both the coarse grinding component and the fine grinding component can screen the fully ground powder to the outside of the component during operation.

[0008] The end of the fine grinding component is provided with a discharge port for discharging the ground residue from the grinding box, and a drive mechanism for controlling the fine grinding component and its operation is installed on the outside of the grinding box.

[0009] The powder selection unit is a guide box that can be detachably installed on the top of the grinding box to support the powder selection unit. The powder selection unit is used to extract powder that has been fully ground by the coarse grinding component and the fine grinding component.

[0010] Preferably, the inside of the flow guide box is provided with multiple powder selection units and a speed sensor for detecting the running speed of the multiple powder selection units. The first end cover and the second end cover are equipped with an adjustment mechanism for controlling the distance between the rotor and the stator in the fine grinding assembly.

[0011] Preferably, the coarse grinding assembly includes a first rotating shaft rotatably connected to the first end cover and the second end cover. A coarse grinding roller is fixedly installed on the surface of the first rotating shaft inside the grinding box. Two sets of coarse grinding stators are symmetrically arranged on the outer ring of the coarse grinding roller and fixedly installed between the first end cover and the second end cover.

[0012] The outer rings of the two sets of coarse grinding stators are attached to the first spiral blades. Multiple sets of first deflectors are welded to the first spiral blades and arranged equidistantly along their axial direction. The first end cover is provided with a rotating component that controls the first spiral blades to rotate with the first rotating shaft. A first filter hopper with an open top and attached to the bottom outer ring of the first spiral blades is detachably installed between the first end cover and the second end cover. The bottom of the first filter hopper, away from the feed hopper, is connected to the feed port for feeding materials into the fine grinding assembly.

[0013] Preferably, the fine grinding assembly includes two sets of second rotating shafts rotatably connected to the first end cover and the second end cover. Fine grinding rollers are fixedly installed on the surface of the second rotating shafts inside the grinding box. The outer rings of the two sets of fine grinding rollers are symmetrically provided with two sets of fine grinding stators with end-connected adjustment mechanisms. A fixed bracket is slidably connected to the outside of the fine grinding stator and fixedly installed between the first end cover and the second end cover.

[0014] The outer ring of the fixed bracket is fitted with the second spiral blade. Multiple sets of second deflectors are welded on the second spiral blade and arranged equidistantly along its axial direction. The first end cover is provided with a rotating component that controls the second spiral blade to rotate with the second rotating shaft. A second filter hopper with an open top and fitted with the bottom outer ring of the first spiral blade is detachably installed between the first end cover and the second end cover. The bottom of the second filter hopper, away from the feeding port, is connected to the discharge port that extends movably to the outside of the grinding box.

[0015] Preferably, the rotating component includes a support rod rotatably connected to the first end cover, a first gear is fixedly mounted at the end of the support rod, a second gear meshing with the first gear is fixedly mounted on the outside of the first and second rotating shafts, a support tube is welded on the first end cover, a gear ring meshing with the first gear is rotatably mounted on the inner ring of the support tube, the gear ring is welded to the end of the second or first spiral blade, and baffles close to the outer ring of the coarse grinding roller are welded on the two sets of coarse grinding stators, with the side of the baffles close to the end of the support tube.

[0016] Preferably, the drive mechanism includes a device bracket fixedly mounted on a support base, a first motor whose output end is connected to the end of the first rotating shaft is fixedly mounted on the top of the device bracket, a protective shell is detachably mounted on the top of the support base, and a transmission component for controlling two sets of second rotating shafts to rotate in the opposite direction to the first rotating shaft is installed inside the protective shell.

[0017] Preferably, the transmission assembly includes a rotating rod rotatably mounted inside the protective shell, a third gear and a first sprocket fixedly mounted on the rotating rod, a fourth gear meshing with the third gear fixedly mounted on the first rotating shaft, and a second sprocket fixedly mounted on a second rotating shaft rotatably connected to the protective shell. The first sprocket is connected to two sets of second sprockets via a chain.

[0018] Preferably, the adjustment mechanism includes two detachably connected booster plates extending from the fine grinding stator to the outside of the grinding box. Two sets of mounting plates are detachably mounted on the outer sides of the first end cover and the second end cover. A sliding rod that slides through multiple sets of booster plates is fixedly installed between the two sets of mounting plates. A push-pull member that controls the displacement of the booster plate is rotatably connected to the end of the booster plate away from the end cover.

[0019] Preferably, the push-pull component includes a hydraulic rod fixedly mounted on the end cap, a push-pull plate fixedly mounted on the top of the hydraulic rod, and the top of the push-pull plate connected to the booster plate via a hinged connecting rod.

[0020] Preferably, the powder selection unit includes a discharge box fixedly installed on the top of the guide box. Two sets of symmetrical second motors are fixedly installed on the top of the discharge box. The output end of the second motor is connected to a connecting rod extending into the inside of the guide box. An impeller for pumping powder from inside the grinding box upward is fixedly installed at the bottom of the connecting rod. A speed sensor fixedly installed on the guide box is used to detect the rotation speed of the impellers on both sides.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] Equipped with coarse and fine grinding components for upper and lower grading, these components simultaneously perform screening, tumbling, conveying, and circulating grinding during the actual rotary grinding process. This results in excellent material pulverization, ensuring thorough and uniform grinding. While improving the quality of the final powder product, it also effectively extracts flour from wheat. The cyclic grinding process after grading and screening allows for rapid extraction of the processed powder, effectively avoiding unnecessary energy consumption during operation. The equipment boasts excellent environmental performance, energy saving, and contributes to energy conservation and emission reduction goals. A speed sensor detects impeller rotation, facilitating the control of multiple impeller speeds and ensuring speed consistency. The error in the particle size cutting point for selecting finished powder is minimal between impellers, and a low speed is used to select powder of the same fineness, promoting environmental protection and energy saving. An adjustment mechanism for regulating the grinding gap of the fine grinding component, combined with a speed-controlled powder selection unit, facilitates precise processing and collection of powders of varying fineness. The equipment has a wide range of applications, strong material adaptability, adjustable product fineness, and meets diverse market demands. It also helps improve production efficiency and product quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a side view of the overall structure of the present invention;

[0025] Figure 3 This is a first sectional view of the overall structure of the present invention;

[0026] Figure 4 This is a second sectional view of the overall structure of the present invention;

[0027] Figure 5 This is a third sectional view of the overall structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the first end cap, rotating component, spiral blade, and grinding stator structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the structure of the second end cap, drive mechanism, grinding roller, filter bucket, etc. of the present invention;

[0030] Figure 8 This is a cross-sectional view of the partial structure of the fine grinding assembly and the rough grinding assembly, as well as the structure of the rotating component of the present invention;

[0031] Figure 9 This is a bottom view of the internal structure of the flow guide box of the present invention.

[0032] Legend:

[0033] 10. Grinding box; 11. Support base; 12. First end cover; 13. Second end cover; 14. Feed hopper; 15. Feeding port; 16. Discharge port; 17. Flow guide box; 18. Speed ​​sensor;

[0034] 20. Grinding unit; 201. Coarse grinding assembly; 2011. First rotating shaft; 2012. Coarse grinding roller; 2013. Coarse grinding stator; 2014. First spiral blade; 2015. First filter bucket; 2016. First deflector; 202. Fine grinding assembly; 2021. Second rotating shaft; 2022. Fine grinding roller; 2023. Fine grinding stator; 2024. Fixed bracket; 2025. Second spiral blade; 2026. Second filter bucket; 2027. Second deflector; 203. Drive mechanism; 2031. Equipment bracket; 2032. First motor; 2033. Protective shell; 2035. Rotating rod; 2036. Third gear; 2037. First sprocket; 2038. Fourth gear; 2039. Second sprocket;

[0035] 30. Powder classifier; 301. Discharge box; 302. Second motor; 303. Connecting rod; 304. Impeller;

[0036] 40. Rotating component; 401. Support rod; 402. First gear; 403. Second gear; 404. Support tube; 405. Gear ring; 406. Baffle plate;

[0037] 50. Adjustment mechanism; 501. Push plate; 502. Mounting plate; 503. Slide rod; 504. Hydraulic rod; 505. Push-pull plate; 506. Connecting rod. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-9In this embodiment of the invention, a horizontal multi-rotor grinding mill includes a grinding box 10, a grinding unit 20, and a powder selection unit 30. The grinding box 10 is fixedly installed on a support base 11. The four corners of the bottom of the support base 11 may be provided with support feet for shock absorption and noise reduction. The two ends of the grinding box 10 are respectively detachably installed with a first end cover 12 and a second end cover 13, which facilitates the disassembly of the first end cover 12 and the second end cover 13, and facilitates the inspection and replacement of the internal components of the grinding box 10. A feeding hopper 14 for feeding material into the grinding box 10 is fixedly installed on the first end cover 12. The grinding unit 20 includes a coarse grinding component 201 for receiving material from the feeding hopper 14 and a fine grinding component 202 for receiving material from the feeding port 15 of the coarse grinding component 201.

[0040] The coarse grinding component 201 circulates and grinds the material while conveying it axially. The fine grinding component 202 further circulates and grinds the material that was not fully ground by the coarse grinding component 201 while conveying it axially. Both the coarse grinding component 201 and the fine grinding component 202 can screen the fully ground powder to the outside of the components during operation. The end of the fine grinding component 202 is provided with a discharge port 16 for discharging the ground residue from the grinding box 10. The outside of the grinding box 10 is equipped with a drive mechanism 203 for controlling the operation of the fine grinding component 202. The top of the grinding box 10 is detachably equipped with a guide box 17 for supporting the powder selection unit 30. The powder selection unit 30 is used to extract the powder that was fully ground by the coarse grinding component 201 and the fine grinding component 202.

[0041] In actual use, the drive mechanism 203 of the horizontal multi-rotor grinding mill drives the coarse grinding component 201 and the fine grinding component 202. The material to be ground is fed from the hopper 14 into the grinding chamber 10. The material entering the grinding chamber 10 directly enters one end of the coarse grinding component 201. The material to be ground falls from top to bottom into the coarse grinding component 201. After being ground by the middle component of the coarse grinding component 201, it falls back down. The coarse grinding component 201 can filter the fully ground powder to the outside of the component. During the rotational grinding process, the coarse grinding component 201... The grinding component 202 can simultaneously convey the ground material forward and then feed it to the center of the coarse grinding component 201 for further grinding, thereby achieving simultaneous material conveying, circulating grinding, and screening. The fine grinding component 202 can convey, circulate, finely grind, and screen the material processed by the coarse grinding component 201. Finally, the residue with fully extracted powder is conveyed from the discharge port 16 to the outside of the equipment. To prevent dust from entering from the discharge port 16, a corresponding collection box or other structure can be set at the discharge port 16. However, this is not the focus of this technical solution and will not be elaborated on here.

[0042] The horizontal multi-rotor mill operates with the powder sorting unit 30 running simultaneously with the grinding components. The powder sorting unit 30 can extract the powder screened out after processing by the fine grinding component 202 and the coarse grinding component 201, and can also directly extract the powder exposed inside the fine grinding component 202 and the coarse grinding component 201. During operation, the mill can quickly collect the qualified powder in a timely manner, avoiding further grinding of the qualified powder and thus improving the uniformity of the final powder. It can also fully process the material, efficiently extract flour from wheat, avoid unnecessary material waste, and avoid wasting energy by grinding the processed material multiple times, thus contributing to energy conservation and emission reduction.

[0043] See Figures 1-9 Furthermore, the inside of the guide box 17 is equipped with multiple sets of powder selection units 30 and a speed sensor 18 for detecting the rotational speed of the multiple sets of powder selection units 30 during operation. The first end cover 12 and the second end cover 13 are equipped with an adjustment mechanism 50 for controlling the distance between the rotor and the stator in the fine grinding assembly 202. The multiple sets of powder selection units 30 can facilitate the improvement of powder collection efficiency, and the speed sensor 18 allows the device to automatically adjust the rotational speed of the two sets of powder selection units 30, thereby ensuring the uniformity of powder collection. By using the adjustment mechanism 50 to control the distance between the rotor and the stator in the fine grinding assembly 202, it is possible to make reasonable settings according to the material characteristics, particle size requirements and equipment conditions, so as to balance the grinding effect, efficiency and equipment life.

[0044] In one embodiment, see Figures 3-8 Specifically, the coarse grinding assembly 201 includes a first rotating shaft 2011 rotatably connected to the first end cover 12 and the second end cover 13. A coarse grinding roller 2012 is fixedly installed on the surface of the first rotating shaft 2011 inside the grinding box 10. Two sets of coarse grinding stators 2013 are symmetrically arranged on the outer ring of the coarse grinding roller 2012 and fixedly installed between the first end cover 12 and the second end cover 13. The outer rings of the two sets of coarse grinding stators 2013 are attached to the first spiral blade 2014. Multiple sets of first deflector plates 2016 are welded on the first spiral blade 2014 and are arranged equidistantly along its axial direction. A rotating component 40 is provided on the first end cover 12 to control the first spiral blade 2014 to rotate with the first rotating shaft 2011. A first filter hopper 2015 with an open top and attached to the bottom outer ring of the first spiral blade 2014 is detachably installed between the first end cover 12 and the second end cover 13. The bottom of the first filter hopper 2015 away from the feed hopper 14 is connected to the feed port 15 for feeding materials into the fine grinding assembly 202.

[0045] One end of the grinding stator can be directly welded to the first end cover 12, and the other end of the grinding stator can be detachably connected to the second end cover 13, facilitating the disassembly and assembly of the internal components of the grinding box 10. The coarse grinding roller 2012, which rotates with the first rotating shaft 2011, works with the coarse grinding stator 2013 to grind the material between them. The ground material falls into the first filter hopper 2015, which can screen the processed powder to the outside. The powder selection unit 30 can suck up the powder floating out of the filter hopper. The rotation of the first rotating shaft 2011 can drive the first spiral blade 2 through the rotating part 40. When 014 and the first deflector 2016 rotate, the rotation of the first spiral blade 2014 and the first deflector 2016 can transport the material along the axial direction of the rotating shaft while rotating and flipping the material upward. The material that is flipped upward again by the first deflector 2016 to the top of the two sets of coarse grinding stators 2013 can re-enter between the stator and the rotor for grinding. The rotating first spiral blade 2014 and the first deflector 2016 agitate the ground material, which can improve the powder extraction efficiency of the powder selection unit 30. The material processed by the coarse grinding component 201 can be transported through the feed port 15 to the fine grinding component 202 for further grinding.

[0046] Specifically, the fine grinding assembly 202 includes two sets of second rotating shafts 2021 rotatably connected to the first end cover 12 and the second end cover 13. Fine grinding rollers 2022 are fixedly mounted on the surface of the second rotating shafts 2021 inside the grinding chamber 10. Two sets of fine grinding stators 2023 with end-connected adjustment mechanisms 50 are symmetrically arranged on the outer rings of both sets of fine grinding rollers 2022. A fixed bracket 2024, fixedly installed between the first end cover 12 and the second end cover 13, is slidably connected to the outer side of the fine grinding stator 2023. The outer ring of the fixed bracket 2024 is in contact with the first end cover 12 and the second end cover 13. The second spiral blade 2025 has multiple sets of equidistantly arranged second deflector plates 2027 welded on it. The first end cover 12 is provided with a rotating component 40 that controls the second spiral blade 2025 to rotate with the second rotating shaft 2021. A second filter bucket 2026 with an open top and fitted to the bottom outer ring of the first spiral blade 2014 is detachably installed between the first end cover 12 and the second end cover 13. The bottom of the second filter bucket 2026 away from the feeding port 15 is connected to the discharge port 16 outside the grinding box 10.

[0047] The actual working principle of the fine grinding component 202 is the same as that of the coarse grinding component 201. The gap between the fine grinding stator 2023 and the fine grinding roller 2022 is smaller than the gap between the coarse grinding roller 2012 and the coarse grinding stator 2013, which can facilitate finer grinding of the pre-processed material, thereby facilitating the full extraction of powder from the coarse material. The fine grinding stator 2023 can be slidably adjusted inside the fixed bracket 2024, which can facilitate the extraction of materials of corresponding fineness according to actual processing needs. The fine grinding roller 2022 and the coarse grinding roller 2012 can be selected from the existing grinding roller models used for grinding grain.

[0048] Based on the above embodiments, see [link to relevant documentation] Figures 7-8 Specifically, the rotating component 40 includes a support rod 401 rotatably connected to the first end cover 12. A first gear 402 is fixedly installed at the end of the support rod 401. A second gear 403 meshing with the first gear 402 is fixedly installed on the outside of the first rotating shaft 2011 and the second rotating shaft 2021. A support tube 404 is welded on the first end cover 12. A toothed ring 405 meshing with the first gear 402 is rotatably installed on the inner ring of the support tube 404. A baffle 406 close to the outer ring of the coarse grinding roller 2012 is welded on the two sets of coarse grinding stators 2013. The side of the baffle 406 is close to the end of the support tube 404.

[0049] The rotation of the shaft can drive the second gear 403 on its surface to rotate. The second gear 403 drives the first gear 402 and the support rod 401 to rotate. The gear ring 405 is welded to the end of the second spiral blade 2025 or the first spiral blade 2014. The first gear 402 drives the gear ring 405 and the spiral blade connected to it to rotate. The reasonable transmission ratio between the first gear 402 and the second gear 403 is designed according to the actual processing requirements of the equipment. The rotation speed of the spiral blade and the grinding roller is precisely designed. The rotating second spiral blade 2025 can effectively prevent impurities from entering the interior of the rotating part 40 by carrying the material away from the rotating part 40 and the baffle 406.

[0050] See Figures 1 to 7Specifically, the drive mechanism 203 includes a device bracket 2031 fixedly mounted on the support base 11. A first motor 2032 with its output end connected to the end of the first rotating shaft 2011 is fixedly mounted on the top of the device bracket 2031. A protective shell 2033 is detachably mounted on the top of the support base 11. A transmission assembly for controlling two sets of second rotating shafts 2021 to rotate in the opposite direction to the first rotating shaft 2011 is installed inside the protective shell 2033. The transmission assembly includes a rotating rod 2035 rotatably mounted inside the protective shell 2033. A third gear 2036 and a first sprocket 2037 are fixedly mounted on the rotating rod 2035. A fourth gear 2038 meshing with the third gear 2036 is fixedly mounted on the first rotating shaft 2011. A second sprocket 2039 is fixedly mounted on the second rotating shaft 2021 rotatably connected to the protective shell 2033. The first sprocket 2037 is connected to the two sets of second sprockets 2039 via a chain.

[0051] The motor in the equipment can be a stepper motor or a servo motor. A gearbox can be added to the motor output end according to actual needs. The first motor 2032 is started to drive the first rotating shaft 2011 to rotate. The rotation of the first rotating shaft 2011 drives the third gear 2036, the first sprocket 2037 and the rotating rod 2035 to rotate through the fourth gear 2038. The first sprocket 2037 drives the two sets of second sprockets 2039 and the second rotating shaft 2021 to rotate through the chain. The fourth gear 2038 and the third gear 2036 rotate in opposite directions, while the third gear 2036 and the second sprocket 2039 rotate in the same direction. This can realize that the first rotating shaft 2011 and the second rotating shaft 2021 rotate in opposite directions, so that the material is conveyed in opposite directions inside the coarse grinding component 201 and the fine grinding component 202, which is conducive to the equipment to classify and grind the material thoroughly.

[0052] In one embodiment, see Figures 1-6 Specifically, the adjustment mechanism 50 includes a push plate 501 that is detachably connected to both ends of the fine grinding stator 2023 extending to the outside of the grinding box 10. Two sets of mounting plates 502 are detachably mounted on the outer sides of the first end cover 12 and the second end cover 13. A sliding rod 503 that slides through multiple sets of push plates 501 is fixedly installed between the two sets of mounting plates 502. A push-pull member that controls the displacement of the push plate 501 is rotatably connected to the end away from the end cover. Correspondingly, the push-pull member includes a hydraulic rod 504 fixedly mounted on the end cover. A push-pull plate 505 is fixedly mounted on the top of the hydraulic rod 504. The top of the push-pull plate 505 is connected to the push plate 501 through a hinged connecting rod 506.

[0053] Simultaneously activating the hydraulic rods 504 on both sides of the equipment can drive the push-pull plate 505 to move up and down. The push-pull plate 505 can drive the booster plate 501 to slide on the surface of the slide rod 503 via the connecting rod 506. The first end cover 12 and the second end cover 13 are both provided with sliding grooves for the fine grinding stator 2023 to move. The booster plate 501 slides against the surface of the end cover, which can achieve the sealing of the end cover sliding groove. The fine grinding stators 2023 on both sides of a set of fine grinding rollers 2022 move synchronously in opposite directions, which can accurately control the distance between the fine grinding rollers 2022 and the fine grinding stator 2023. The smaller the distance, the greater the shear force on the material and the finer the grinding particle size. The fine grinding rollers 2022 and the fine grinding stator 2023 with adjustable distance can be used in conjunction with the powder classifier unit 30 with adjustable speed, which is conducive to further precise control of the actual grinding accuracy and also conducive to energy saving and consumption reduction.

[0054] In one embodiment, see Figures 1-9 Specifically, the powder selection unit 30 includes a discharge box 301 fixedly installed on the top of the guide box 17. Two sets of symmetrical second motors 302 are fixedly installed on the top of the discharge box 301. The output end of the second motor 302 is connected to a connecting rod 303 extending into the interior of the guide box 17. An impeller 304 for pumping powder from the inside of the grinding box 10 upward is fixedly installed at the bottom of the connecting rod 303. A speed sensor 18 fixedly installed on the guide box 17 is used to detect the rotation speed of the impellers 304 on both sides.

[0055] Starting the second motor 302 can drive the connecting rod 303 to rotate, which in turn drives the impeller 304 to rotate. The rotating impeller 304 can absorb and extract the powder processed inside the grinding box 10. The top of the discharge box 301 can be connected to the collection device through a flange or other structure. The impeller 304 can be made of technical materials. The speed sensor 18 can be a magnetic or eddy current sensor, etc. The rotational connection mentioned in the description can be achieved through components such as bearings. The detachable connection of the components can be achieved through components such as bolts. All fixed and rotating parts can be assembled in a way that is easy to disassemble, so as to facilitate subsequent maintenance and repair of the equipment.

[0056] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A horizontal multi-rotor grinding mill, characterized in that, include: Grinding box (10), the grinding box (10) is fixedly installed on support base (11), and the two ends of the grinding box (10) are respectively detachably installed with a first end cover (12) and a second end cover (13). The first end cover (12) is fixedly installed with a feeding hopper (14) for feeding material into the grinding box (10). The grinding unit (20) includes a coarse grinding component (201) for receiving material from the feed hopper (14) and a fine grinding component (202) for receiving the feed inlet (15) of the coarse grinding component (201). The coarse grinding component (201) circulates and grinds the material while conveying it axially. The fine grinding component (202) further circulates and grinds the material that has not been sufficiently ground by the coarse grinding component (201) while conveying it axially. Both the coarse grinding component (201) and the fine grinding component (202) can screen the fully ground powder to the outside of the component during operation. The end of the fine grinding component (202) is provided with a discharge port (16) for discharging the ground residue from the grinding box (10). The outside of the grinding box (10) is equipped with a drive mechanism (203) for controlling the operation of the fine grinding component (202). The powder selection unit (30) is provided with a guide box (17) that supports the powder selection unit (30) detachably installed on the top of the grinding box (10). The powder selection unit (30) is used to extract powder that has been sufficiently ground by the coarse grinding component (201) and the fine grinding component (202). The inside of the flow guide box (17) is provided with multiple powder selection units (30) and a speed sensor (18) for detecting the running speed of the multiple powder selection units (30). The first end cover (12) and the second end cover (13) are equipped with an adjustment mechanism (50) for controlling the distance between the rotor and the stator in the fine grinding assembly (202). The coarse grinding assembly (201) includes a first rotating shaft (2011) rotatably connected to the first end cover (12) and the second end cover (13). The coarse grinding roller (2012) is fixedly installed on the surface of the first rotating shaft (2011) inside the grinding box (10). The outer ring of the coarse grinding roller (2012) is symmetrically provided with two sets of coarse grinding stators (2013) fixedly installed between the first end cover (12) and the second end cover (13). The outer rings of the two sets of coarse grinding stators (2013) are attached to the first spiral blade (2014). The first spiral blade (2014) is welded with multiple sets of first deflector plates (2016) arranged at equal intervals and along its axial direction. The first end cover (12) is provided with a rotating component (40) that controls the first spiral blade (2014) to rotate with the first rotating shaft (2011). A first filter hopper (2015) with an open top and attached to the bottom outer ring of the first spiral blade (2014) is detachably installed between the first end cover (12) and the second end cover (13). The bottom of the first filter hopper (2015) away from the feed hopper (14) is connected to the feed port (15) for feeding materials to the fine grinding assembly (202).

2. A horizontal multi-rotor grinding mill according to claim 1, characterized in that: The fine grinding assembly (202) includes two sets of second rotating shafts (2021) rotatably connected to the first end cover (12) and the second end cover (13). The surface of the second rotating shaft (2021) inside the grinding box (10) is fixedly mounted with fine grinding rollers (2022). The outer ring of the two sets of fine grinding rollers (2022) is symmetrically provided with two sets of fine grinding stators (2023) with end-connected adjustment mechanisms (50). The outer side of the fine grinding stator (2023) is slidably connected with a fixed bracket (2024) fixedly installed between the first end cover (12) and the second end cover (13). The outer ring of the fixed bracket (2024) is attached to the second spiral blade (2025). Multiple sets of second baffles (2027) are welded on the second spiral blade (2025) and arranged equidistantly along its axial direction. The first end cover (12) is provided with a rotating component (40) that controls the second spiral blade (2025) to rotate with the second rotating shaft (2021). A second filter bucket (2026) with an open top and attached to the bottom outer ring of the first spiral blade (2014) is detachably installed between the first end cover (12) and the second end cover (13). The bottom of the second filter bucket (2026) away from the feeding port (15) is connected to the discharge port (16) outside the grinding box (10).

3. A horizontal multi-rotor grinding mill according to claim 2, characterized in that: The rotating component (40) includes a support rod (401) rotatably connected to the first end cover (12). A first gear (402) is fixedly installed at the end of the support rod (401). A second gear (403) meshing with the first gear (402) is fixedly installed on the outside of the first rotating shaft (2011) and the second rotating shaft (2021). A support tube (404) is welded on the first end cover (12). A toothed ring (405) meshing with the first gear (402) is rotatably installed on the inner ring of the support tube (404). The toothed ring (405) is welded to the end of the second spiral blade (2025) or the first spiral blade (2014). A baffle (406) close to the outer ring of the coarse grinding roller (2012) is welded on the two sets of coarse grinding stators (2013). The side of the baffle (406) is close to the end of the support tube (404).

4. A horizontal multi-rotor grinding mill according to claim 2, characterized in that: The drive mechanism (203) includes a device bracket (2031) fixedly mounted on a support base (11). A first motor (2032) with its output end connected to the end of a first rotating shaft (2011) is fixedly mounted on the top of the device bracket (2031). A protective shell (2033) is detachably mounted on the top of the support base (11). A transmission assembly for controlling two sets of second rotating shafts (2021) to rotate in the opposite direction to the first rotating shaft (2011) is installed inside the protective shell (2033).

5. A horizontal multi-rotor grinding mill according to claim 4, characterized in that: The transmission assembly includes a rotating rod (2035) rotatably mounted inside the protective shell (2033). A third gear (2036) and a first sprocket (2037) are fixedly mounted on the rotating rod (2035). A fourth gear (2038) meshing with the third gear (2036) is fixedly mounted on the first rotating shaft (2011). A second sprocket (2039) is fixedly mounted on a second rotating shaft (2021) rotatably connected to the protective shell (2033). The first sprocket (2037) is connected to the two sets of second sprockets (2039) via a chain.

6. A horizontal multi-rotor grinding mill according to claim 2, characterized in that: The adjustment mechanism (50) includes a push plate (501) that extends from the fine grinding stator (2023) to the outside of the grinding box (10) and is detachably connected at both ends. Two sets of mounting plates (502) are detachably mounted on the outer sides of the first end cover (12) and the second end cover (13). A sliding rod (503) that slides through multiple sets of push plates (501) is fixedly installed between the two sets of mounting plates (502). A push-pull member that controls the displacement is rotatably connected to the end of the push plate (501) away from the end cover.

7. A horizontal multi-rotor grinding mill according to claim 6, characterized in that: The push-pull component includes a hydraulic rod (504) fixedly mounted on the end cap. A push-pull plate (505) is fixedly mounted on the top of the hydraulic rod (504). The top of the push-pull plate (505) is connected to the booster plate (501) via a hinged connecting rod (506).

8. A horizontal multi-rotor grinding mill according to any one of claims 1-7, characterized in that: The powder selection unit (30) includes a discharge box (301) fixedly installed on the top of the guide box (17). Two sets of symmetrical second motors (302) are fixedly installed on the top of the discharge box (301). The output end of the second motor (302) is connected to a connecting rod (303) extending into the inside of the guide box (17). An impeller (304) for pumping powder from the inside of the grinding box (10) upward is fixedly installed at the bottom of the connecting rod (303). A speed sensor (18) fixedly installed on the guide box (17) is used to detect the rotation speed of the impellers (304) on both sides.

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