Horizontal multi-rotor flour mill

Abstract

The invention discloses a horizontal multi-rotor flour mill in the technical field of flour milling devices.The horizontal multi-rotor flour mill comprises a grinding box, a grinding unit and a powder selecting unit, the grinding box is fixedly installed on a supporting seat, and a first end cover and a second end cover are detachably installed at the two ends of the grinding box correspondingly; a discharging hopper for feeding materials into the grinding box is fixedly installed on the first end cover, the grinding unit comprises a coarse grinding assembly used for receiving the materials from the discharging hopper and a fine grinding assembly used for being connected with a feeding port of the coarse grinding assembly, and the coarse grinding assembly conveys the materials in the axial direction while circularly grinding the materials. The horizontal multi-rotor flour mill solves the problems that an existing horizontal multi-rotor flour mill is difficult to finely and uniformly grind the materials, the requirement for high-precision grinding is inconvenient to meet, the material grinding efficiency is low, the grinding efficiency is low, and the grinding efficiency is low. And the quality of a final product is difficult to control.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a horizontal multi-rotor grinding machine. Background Art

[0002] The traditional process of wheat flour processing is mainly divided into two steps: peeling and grinding. Among them, the grinding process determines the quality and taste of the flour after grinding. The traditional flour grinding equipment is mainly flour milling machine, which is mainly a compound structure, that is, the whole machine consists of two independent parts, each of which is mainly composed of two grinding rollers, two feeding rollers and some auxiliary mechanisms. When using a traditional mill to grind the tempered wheat, after the material enters the grinding roller, the performance of the two grinding rollers often directly determines the processing quality and output of the flour.

[0003] When the existing horizontal multi-rotor mill is in operation, it is difficult to achieve detailed and uniform grinding of materials due to the lack of effective grinding, grading and screening mechanisms, resulting in a wide distribution range of fineness of the final ground product, which cannot meet the needs of high-precision grinding, and some materials are difficult to be fully ground, resulting in low grinding efficiency of the materials. During the grinding process, the fully ground powder cannot be effectively separated from the inadequately ground material, which also leads to unstable quality of the final product and increased energy consumption of the equipment. Therefore, those skilled in the art provide a horizontal multi-rotor mill to solve the problems raised in the above background technology. Summary of the invention

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

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

[0006] A grinding box, the grinding box is fixedly mounted on a support seat, a first end cover and a second end cover are detachably mounted at both ends of the grinding box, and a lower hopper for feeding materials into the grinding box is fixedly mounted on the first end cover;

[0007] A grinding unit, the grinding unit comprising a coarse grinding assembly for receiving materials from a lower hopper and a fine grinding assembly for receiving a feeding port of the coarse grinding assembly, the coarse grinding assembly cyclically grinding the materials while conveying them in an axial direction, the fine grinding assembly further cyclically grinding the materials that are not fully ground by the coarse grinding assembly while conveying them in an axial direction, and the coarse grinding assembly and the fine grinding assembly can both screen fully ground powder to the outside of the assembly during operation;

[0008] The end of the fine grinding assembly is provided with a discharge port for discharging the ground slag out of the grinding box, and the outside of the grinding box is equipped with a driving mechanism for controlling the fine grinding assembly and the operation of the fine grinding assembly;

[0009] A powder selection unit, a guide box supporting the powder selection unit is detachably mounted on the top of the grinding box, and the powder selection unit is used to extract the fully ground powder of the coarse grinding assembly and the fine grinding assembly.

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

[0011] Preferably, the rough grinding assembly comprises a first rotating shaft rotatably connected to the first end cover and the second end cover, a rough grinding roller is fixedly mounted on the surface of the first rotating shaft located inside the grinding box, and two groups of rough grinding stators are symmetrically arranged on the outer ring of the rough grinding roller and fixedly mounted between the first end cover and the second end cover;

[0012] The outer rings of the two groups of rough grinding stators fit the first spiral blade, and multiple groups of first shift plates are welded on the first spiral blade, which are arranged equidistantly and along its axial direction. The first end cover is provided with a rotating part for controlling the first spiral blade to rotate along the first rotating shaft. A first filter bucket with an open top and fitting the outer ring of the bottom of the first spiral blade is detachably installed between the first end cover and the second end cover, and the bottom of the first filter bucket, at one end away from the lower hopper, is connected to a feeding port for feeding materials into the fine grinding assembly.

[0013] Preferably: the fine grinding assembly comprises two groups of second rotating shafts rotatably connected to the first end cover and the second end cover, the second rotating shaft is located on the surface inside the grinding box and is fixedly mounted with fine grinding rollers, the outer rings of the two groups of fine grinding rollers are symmetrically provided with two groups of fine grinding stators whose ends are connected to the adjustment mechanism, and the outer side of the fine grinding stator is slidably connected with a fixed bracket fixedly mounted between the first end cover and the second end cover;

[0014] The outer ring of the fixed bracket fits the second spiral blade, and a plurality of second shift plates are welded on the second spiral blade, which are arranged equidistantly and along its axial direction. The first end cover is provided with a rotating member for controlling the second spiral blade to rotate along the second rotating shaft. A second filter bucket with an open top and fitting the outer ring of the bottom of the first spiral blade is detachably installed between the first end cover and the second end cover. The bottom of the second filter bucket, at one end away from the feeding port, is connected and movably extends to the discharge port outside the grinding box.

[0015] Preferably: the rotating member includes a support rod rotatably connected to the first end cover, a first gear is fixedly installed on the end of the support rod, a second gear meshing with the first gear is fixedly installed on the outside of the first rotating shaft and the second rotating shaft, a support tube is welded on the first end cover, a gear ring meshing with the first gear is rotatably installed on the inner ring of the support tube, the gear ring is welded to the end of the second spiral leaf or the first spiral leaf, and a baffle plate close to the outer ring of the coarse grinding roller is welded on the two groups of the rough grinding stators, and the side of the baffle plate is close to the end of the support tube.

[0016] Preferably: the driving mechanism includes an equipment bracket fixedly mounted on a support base, a first motor having an output end connected to the end of a first rotating shaft is fixedly mounted on the top of the equipment bracket, a protective shell is detachably mounted on the top of the support base, and a transmission assembly for controlling two groups of second rotating shafts to rotate in the opposite direction to the first rotating shaft is installed in 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 are fixedly mounted on the rotating rod, a fourth gear meshing with the third gear is fixedly mounted on the first rotating shaft, a second sprocket is fixedly mounted on the second rotating shaft rotatably connected to the protective shell, and the first sprocket is transmission-connected to two sets of second sprockets via a chain.

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

[0019] Preferably, the push-pull member comprises a hydraulic rod fixedly mounted on the end cover, a push-pull plate is fixedly mounted on the top of the hydraulic rod, and the top of the push-pull plate is connected to the booster plate via a hinged connecting rod.

[0020] Preferably: the powder selection unit includes a discharge box fixedly mounted on the top of the guide box, two groups of symmetrical second motors are fixedly mounted on the top of the discharge box, the output end of the second motor is connected to a connecting rod extending to the inside of the guide box, the bottom end of the connecting rod is fixedly mounted with an impeller for pumping the powder inside the grinding box upward, and the speed sensor fixedly mounted on the guide box is used to detect the rotation speed of the impellers on both sides.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The machine is equipped with a coarse grinding component and a fine grinding component for upper and lower graded grinding, and the coarse grinding component and the fine grinding component can simultaneously realize screening, stirring, conveying and circulating grinding in the actual rotating grinding process, so that the actual crushing effect of the material is good, the material is crushed fully and evenly, and the flour in the wheat can be fully ground while improving the quality of the final powder product. The material is graded and screened and then cyclically ground, and the processed powder can be quickly extracted during the grinding process, effectively avoiding unnecessary energy consumption during the operation of the equipment. The equipment has good environmental protection performance, energy saving and consumption reduction, and is conducive to achieving the goal of energy saving and emission reduction. A speed sensor is provided for detecting the rotation of the impeller, which is convenient for adjusting the speed and consistency of multiple groups of impellers. The cutting point error of the finished powder particle size selected between the impellers is small, and the speed used for selecting powders of the same fineness is low, which is environmentally friendly and energy-saving. An adjusting mechanism for adjusting the grinding gap of the fine grinding component is provided, and it is used in conjunction with a speed-controlled powder selection unit, which is convenient for accurately processing and collecting powders of different finenesses. The equipment has a wide range of actual applications, strong material adaptability, adjustable product fineness, and meets diverse market needs. The equipment is also conducive to improving production efficiency and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0028] Figure 6 It is a schematic diagram of the first end cover, rotating member, spiral blade and grinding stator structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the second end cover, driving mechanism, grinding roller, filter bucket and other structures of the present invention;

[0030] Figure 8 It is a cross-sectional view of the partial structure of the fine grinding component and the rough grinding component and the rotating part structure of the present invention;

[0031] Fig. 9 It is a bottom view of the internal structure of the guide box of the present invention.

[0032] Legend:

[0033] 10. Grinding box; 11. Support seat; 12. First end cover; 13. Second end cover; 14. Lower hopper; 15. Feeding port; 16. Discharging port; 17. 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 dial plate; 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 dial plate; 203. Driving 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 selection unit; 301. Discharging box; 302. Second motor; 303. Connecting rod; 304. Impeller;

[0036] 40, rotating member; 401, supporting rod; 402, first gear; 403, second gear; 404, supporting tube; 405, gear ring; 406, baffle plate;

[0037] 50. Adjustment mechanism; 501. Boosting plate; 502. Mounting plate; 503. Sliding rod; 504. Hydraulic rod; 505. Push-pull plate; 506. Connecting rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 9In an embodiment of the present 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 mounted on a support seat 11. The four corners of the bottom of the support seat 11 may be provided with supporting feet for shock absorption and noise reduction. The first end cover 12 and the second end cover 13 are detachably mounted at both ends of the grinding box 10, respectively. The first end cover 12 and the second end cover 13 are convenient to disassemble, so as to facilitate the inspection and replacement of the components inside the grinding box 10. A lower hopper 14 for feeding materials into the grinding box 10 is fixedly mounted on the first end cover 12. The grinding unit 20 includes a coarse grinding component 201 for receiving materials from the lower hopper 14 and a fine grinding component 202 for receiving the feeding port 15 of the coarse grinding component 201.

[0040] The coarse grinding component 201 performs cyclic grinding of the material while conveying it axially, and the fine grinding component 202 performs further cyclic grinding of the material that is not fully ground by the coarse grinding component 201 while conveying it axially, and 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, and the end of the fine grinding component 202 is provided with a discharge port 16 for discharging the ground debris from the grinding box 10, and the outside of the grinding box 10 is equipped with a driving mechanism 203 for controlling the operation of the fine grinding component 202 and the fine grinding component 202, and the top of the grinding box 10 is detachably equipped with a guide box 17 supporting a powder selection unit 30, and the powder selection unit 30 is used to extract the fully ground powder of the coarse grinding component 201 and the fine grinding component 202.

[0041] When the horizontal multi-rotor mill is actually used, the driving mechanism 203 is set to drive the rough grinding component 201 and the fine grinding component 202 to operate, and the material to be ground is delivered from the lower hopper 14 to the inside of the grinding box 10. The material entering the grinding box 10 will directly enter the inside of one end of the rough grinding component 201. The material to be ground falls from top to bottom into the inside of the rough grinding component 201, and falls after being ground by the middle component of the rough grinding component 201. The rough grinding component 201 can filter the fully ground powder to the outside of the component, and the rough grinding component 201 is in the process of rotating grinding. The ground material can be conveyed forward and then sent to the center of the coarse grinding component 201 for re-grinding, thereby realizing the simultaneous conveying, cyclic grinding and screening of the material. The fine grinding component 202 can convey, cyclically finely grind and screen the material processed by the coarse grinding component 201, and finally the residue of the fully squeezed powder is conveyed to the outside of the equipment from the discharge port 16. In order to avoid dust entering from the discharge port 16, a corresponding collection box or other structure can be set at the discharge port 16. It is not the focus of the present technical solution and will not be elaborated here.

[0042] The powder selection unit 30 of the horizontal multi-rotor grinding mill is running while the grinding components are running. The powder selection unit 30 can extract upward the powder screened out by the fine grinding component 202 and the coarse grinding component 201 after processing, and can also directly extract the powder exposed inside the fine grinding component 202 and the coarse grinding component 201. When the grinding mill is running, the qualified powder can be quickly collected in time to avoid further grinding of the qualified powder to make it smaller, thereby helping to improve the uniformity of the final powder, and can fully process the material, and can efficiently extract flour from wheat, avoiding unnecessary waste of materials. The equipment also avoids wasting excess energy to grind the processed material multiple times, thereby helping to save energy and reduce emissions.

[0043] See also Figures 1 to 9 Furthermore, a plurality of powder selection units 30 and a speed sensor 18 for detecting the speed of the plurality of powder selection units 30 during operation are provided inside the guide box 17. An adjusting mechanism 50 for controlling the distance between the rotor and the stator in the fine grinding assembly 202 is installed on the first end cover 12 and the second end cover 13. The plurality of powder selection units 30 can improve the efficiency of collecting powder, and the speed sensor 18 can facilitate the device to autonomously adjust the speed of the two groups of powder selection units 30, thereby ensuring the uniformity of powder collection. The adjusting mechanism 50 can be used to control the distance between the rotor and the stator in the fine grinding assembly 202, which can be conveniently set reasonably according to material characteristics, particle size requirements and equipment conditions to balance grinding effect, efficiency and equipment life.

[0044] In one embodiment, see Figure 3 to Figure 8 Specifically, the coarse grinding component 201 includes a first rotating shaft 2011 rotatably connected to the first end cover 12 and the second end cover 13, and a coarse grinding roller 2012 is fixedly installed on the surface of the first rotating shaft 2011 located inside the grinding box 10. The outer ring of the coarse grinding roller 2012 is symmetrically provided with two groups 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 groups of coarse grinding stators 2013 fit the first spiral leaf 2014, and the first spiral leaf 2014 is welded with a plurality of groups of first shift plates 2016 that are equidistantly arranged and arranged along its axial direction. The first end cover 12 is provided with a rotating member 40 for controlling the first spiral leaf 2014 to rotate with the first rotating shaft 2011. A first filtering bucket 2015 with an open top and fitting the outer ring of the bottom of the first spiral leaf 2014 is detachably installed between the first end cover 12 and the second end cover 13, and the bottom of the first filtering bucket 2015, which is away from the lower hopper 14, is connected to the feeding port 15 for feeding materials into the fine grinding component 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, so as to facilitate the disassembly and assembly of the internal components of the grinding box 10. The coarse grinding roller 2012 rotating with the first rotating shaft 2011 cooperates with the coarse grinding stator 2013 to grind the materials between the two. The ground materials can fall into the interior of the first filtering bucket 2015. The first filtering bucket 2015 can screen the processed powder to the outside. The powder selection unit 30 can absorb the powder floating out of the filtering bucket. The rotation of the first rotating shaft 2011 can drive the first spiral blade 2013 through the rotating member 40. 014 and the first paddle 2016 rotate, the first spiral blade 2014 and the first paddle 2016 rotate to transport the material along the axial direction of the rotating shaft while rotating and turning the material upward, and the material turned up again to the top of the two sets of coarse grinding stators 2013 by the first paddle 2016 can enter between the stator and the rotor again for grinding processing, and the rotating first spiral blade 2014 and the first paddle 2016 stir the ground material, which can improve the powder selection unit 30 The efficiency of extracting powder from the material, the material processed by the coarse grinding component 201 can be transported to the fine grinding component 202 through the feeding port 15 for further grinding processing.

[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. The second rotating shaft 2021 is located on the surface of the inner part of the grinding box 10 and is fixedly installed with fine grinding rollers 2022. The outer rings of the two sets of fine grinding rollers 2022 are symmetrically provided with two sets of fine grinding stators 2023 whose ends are connected to the adjustment mechanism 50. The outer side of the fine grinding stator 2023 is slidably connected to 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 fits the first end cover 12 and the second end cover 13. There are two spiral leaves 2025, and multiple groups of second shift plates 2027 are welded on the second spiral leaves 2025, which are arranged equidistantly and along the axial direction. The first end cover 12 is provided with a rotating member 40 for controlling the second spiral leaves 2025 to rotate along the second rotating shaft 2021. A second filter bucket 2026 with an open top and fitting the outer circle of the bottom of the first spiral leaf 2014 is detachably installed between the first end cover 12 and the second end cover 13. The bottom of the second filter bucket 2026, which is away from the feeding port 15, is connected and movably extends 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 larger than the gap between the coarse grinding roller 2012 and the coarse grinding stator 2013, which can facilitate more detailed grinding of the preliminarily processed materials, thereby facilitating the full extraction of powder from the coarse materials. 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 requirements. The fine grinding roller 2022 and the coarse grinding roller 2012 can use the grinding roller model used for grinding grains in the prior art.

[0048] Based on the above embodiments, see Figure 7-Figure 8 Specifically, the rotating member 40 includes a support rod 401 rotatably connected to the first end cover 12, a first gear 402 is fixedly installed on 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 to the first end cover 12, a gear ring 405 meshing with the first gear 402 is rotatably installed on the inner ring of the support tube 404, and a baffle plate 406 close to the outer ring of the coarse grinding roller 2012 is welded on the two sets of rough grinding stators 2013, and the side of the baffle plate 406 is close to the end of the support tube 404.

[0049] The rotation of the rotating shaft can drive the second gear 403 on its surface to rotate, and 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 leaf 2025 or the first spiral leaf 2014, and the first gear 402 drives the gear ring 405 and the spiral leaf connected to it to rotate. A reasonable transmission ratio between the first gear 402 and the second gear 403 is designed according to the actual processing requirements of the equipment, and the rotation speed of the spiral leaf and the grinding roller is accurately designed. The rotating second spiral leaf 2025 brings the material away from the rotating part 40 and the baffle 406, which can effectively prevent impurities from entering the rotating part 40.

[0050] See also Figure 1 to Figure 7Specifically, the driving mechanism 203 includes an equipment bracket 2031 fixedly mounted on the support base 11, a first motor 2032 whose output end is connected to the end of the first rotating shaft 2011 is fixedly mounted on the top of the equipment bracket 2031, a protective shell 2033 is detachably mounted on the top of the support base 11, a transmission assembly for controlling the two groups of second rotating shafts 2021 to rotate in the opposite direction to the first rotating shaft 2011 is installed in the protective shell 2033, wherein 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, and the first sprocket 2037 is transmission-connected to the two groups of second sprockets 2039 through a chain.

[0051] The motor in the equipment can be a stepper motor or a servo motor. According to actual needs, a transmission can be added to the output end of the motor. The first motor 2032 is started to drive the first rotating shaft 2011 to rotate. The first rotating shaft 2011 rotates through the fourth gear 2038 to drive the third gear 2036, the first sprocket 2037 and the rotating rod 2035 to rotate. The first sprocket 2037 can drive 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, and the third gear 2036 and the second sprocket 2039 have the same direction of rotation, which can realize the reverse rotation of the first rotating shaft 2011 and the second rotating shaft 2021, thereby realizing the opposite conveying direction of the material inside the coarse grinding component 201 and the fine grinding component 202, which is conducive to the equipment to achieve full classification and grinding of the material.

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

[0053] At the same time, the hydraulic rods 504 on both sides of the equipment can be started to 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 bar 503 through the connecting rod 506. The first end cover 12 and the second end cover 13 are both provided with a slide groove for the movement of the fine grinding stator 2023. The booster plate 501 slides against the surface of the end cover to achieve sealing at the end cover slide groove. The fine grinding stators 2023 on both sides of a group of fine grinding rollers 2022 move synchronously in opposite directions, and the spacing between the fine grinding rollers 2022 and the fine grinding stators 2023 can be accurately controlled. The smaller the spacing, the greater the shear force on the material and the finer the grinding particle size. The fine grinding rollers 2022 and the fine grinding stators 2023 with adjustable spacing are used in conjunction with the powder selection unit 30 with adjustable speed, which is beneficial to further accurately control the actual accuracy of the grinding and also beneficial to energy saving and consumption reduction.

[0054] In one embodiment, see Figures 1 to 9 Specifically, the powder selection unit 30 includes a discharge box 301 fixedly installed on the top of the guide box 17, and 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 to the inside of the guide box 17, and the bottom end of the connecting rod 303 is fixedly installed with an impeller 304 for pumping the powder inside the grinding box 10 upward. The 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, and the connecting rod 303 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 equipment through structures such as flanges. The impeller 304 can be made of technical materials, and the speed sensor 18 can optionally be a magnetic or eddy current sensor. The rotational connection in the description can be achieved through components such as bearings, and the detachable connection of the components can be achieved with components such as bolts. All fixed and rotatable components can be assembled in a manner that is easy to disassemble, so as to facilitate subsequent inspection and maintenance of the equipment.

[0056] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

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

Claims

1. A horizontal multi-rotor grinding mill, characterized in that: include: A grinding box (10), the grinding box (10) being fixedly mounted on a support seat (11), a first end cover (12) and a second end cover (13) being detachably mounted on both ends of the grinding box (10), and a lower hopper (14) for feeding materials into the grinding box (10) being fixedly mounted on the first end cover (12); A grinding unit (20), the grinding unit (20) comprising a coarse grinding component (201) for receiving material from a lower hopper (14) and a fine grinding component (202) for receiving a feeding port (15) of the coarse grinding component (201), the coarse grinding component (201) cyclically grinding the material while conveying it axially, the fine grinding component (202) further cyclically grinding the material that is not fully ground by the coarse grinding component (201) while conveying it axially, and the coarse grinding component (201) and the fine grinding component (202) are both capable of screening 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 ground slag from the grinding box (10); the outside of the grinding box (10) is provided with a driving mechanism (203) for controlling the operation of the fine grinding component (202) and the fine grinding component (202); A powder selection unit (30), wherein a guide box (17) supporting the powder selection unit (30) is detachably mounted on the top of the grinding box (10), and the powder selection unit (30) is used to extract fully ground powder from the coarse grinding assembly (201) and the fine grinding assembly (202).

2. A horizontal multi-rotor grinding mill according to claim 1, characterized in that: The guide box (17) is provided with a plurality of powder selection units (30) and a rotation speed sensor (18) for detecting the rotation speed of the plurality of powder selection units (30) during operation. The first end cover (12) and the second end cover (13) are provided with an adjustment mechanism (50) for controlling the distance between the rotor and the stator in the fine grinding assembly (202).

3. A horizontal multi-rotor grinding mill according to claim 2, characterized in that: The rough grinding assembly (201) comprises a first rotating shaft (2011) rotatably connected to a first end cover (12) and a second end cover (13); a rough grinding roller (2012) is fixedly mounted on a surface of the first rotating shaft (2011) located inside the grinding box (10); and two groups of rough grinding stators (2013) are symmetrically mounted on the outer ring of the rough grinding roller (2012) and fixedly mounted between the first end cover (12) and the second end cover (13); The outer rings of the two groups of rough grinding stators (2013) fit the first spiral blade (2014); a plurality of groups of first shifting plates (2016) are welded to the first spiral blade (2014) and are arranged equidistantly and along its axial direction; a rotating member (40) is provided on the first end cover (12) for controlling the first spiral blade (2014) to rotate along the first rotating shaft (2011); a first filter hopper (2015) with an open top and fitting the outer ring of the bottom of the first spiral blade (2014) is detachably installed between the first end cover (12) and the second end cover (13); the bottom of one end of the first filter hopper (2015) away from the lower hopper (14) is connected to a feeding port (15) for feeding materials into the fine grinding assembly (202).

4. A horizontal multi-rotor grinding mill according to claim 3, characterized in that: The fine grinding assembly (202) comprises two groups of second rotating shafts (2021) rotatably connected to the first end cover (12) and the second end cover (13); the second rotating shafts (2021) are located inside the grinding box (10) and have fine grinding rollers (222) fixedly mounted on their surfaces; the outer rings of the two groups of fine grinding rollers (2022) are symmetrically provided with two groups of fine grinding stators (223) whose ends are connected to the adjustment mechanism (50); the outer sides of the fine grinding stators (2023) are slidably connected to a fixed bracket (224) fixedly mounted between the first end cover (12) and the second end cover (13); The outer ring of the fixed bracket (224) fits the second spiral blade (2025), and a plurality of second shifting plates (2027) are welded to the second spiral blade (225) and are arranged equidistantly and along its axial direction. The first end cover (12) is provided with a rotating member (40) for controlling the second spiral blade (2025) to rotate along the second rotating shaft (221). A second filter bucket (2026) with an open top and fitting the outer ring of the bottom 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) at one end away from the feeding port (15) is connected to the discharge port (16) outside the grinding box (10) and extends movably.

5. A horizontal multi-rotor grinding mill according to claim 4, characterized in that: The rotating member (40) comprises a support rod (401) rotatably connected to the first end cover (12); a first gear (402) is fixedly mounted on the end of the support rod (401); a second gear (403) meshing with the first gear (402) is fixedly mounted on the outside of the first rotating shaft (2011) and the second rotating shaft (2021); a support tube (404) is welded to the first end cover (12); a toothed ring (405) meshing with the first gear (402) is rotatably mounted on the inner ring of the support tube (404); the toothed ring (405) is welded to the end of the second spiral leaf (2025) or the first spiral leaf (2014); and a baffle plate (406) close to the outer ring of the rough grinding roller (2012) is welded on the two groups of the rough grinding stators (2013); a side surface of the baffle plate (406) is close to the end of the support tube (404).

6. A horizontal multi-rotor grinding mill according to claim 4, characterized in that: The driving mechanism (203) comprises an equipment support (2031) fixedly mounted on a support base (11); a first motor (2032) having an output end connected to an end of a first rotating shaft (211) is fixedly mounted on the top of the equipment support (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 (221) to rotate in the opposite direction to the first rotating shaft (2011) is mounted in the protective shell (2033).

7. A horizontal multi-rotor grinding mill according to claim 6, characterized in that: The transmission assembly comprises 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 (221) rotatably connected to the protective shell (2033); and the first sprocket (2037) is transmission-connected to two sets of second sprockets (2039) via a chain.

8. A horizontal multi-rotor grinding mill according to claim 4, characterized in that: The adjustment mechanism (50) comprises two detachably connected booster plates (501) extending from the fine grinding stator (2023) to the outside of the grinding box (10); two sets of mounting plates (502) are detachably provided on the outer sides of the first end cover (12) and the second end cover (13); a sliding rod (503) is fixedly installed between the two sets of mounting plates (502) and is slidably passed through the multiple sets of booster plates (501); and one end of the booster plate (501) away from the end cover is rotatably connected to a push-pull member for controlling its displacement.

9. A horizontal multi-rotor grinding mill according to claim 8, characterized in that: The push-pull member comprises a hydraulic rod (504) fixedly mounted on the end cover, a push-pull plate (505) fixedly mounted on the top of the hydraulic rod (504), and the top of the push-pull plate (505) is connected to the boosting plate (501) via a hinged connecting rod (506).

10. A horizontal multi-rotor grinding mill according to any one of claims 2 to 9, characterized in that: The powder selection unit (30) comprises a discharge box (301) fixedly mounted on the top of the guide box (17); two sets of symmetrical second motors (302) are fixedly mounted on the top of the discharge box (301); the output ends of the second motors (302) are connected to connecting rods (303) extending into the interior of the guide box (17); the bottom ends of the connecting rods (303) are fixedly mounted with impellers (304) for pumping powder inside the grinding box (10) upward; and the rotation speed sensors (18) fixedly mounted on the guide box (17) are used to detect the rotation speeds of the impellers (304) on both sides.

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