Grain multi-stage grinding device and method thereof

Abstract

The invention discloses a multi-stage grain grinding device and a method thereof, and relates to the field of grain grinding equipment. Comprising a grinding rack, a crushing mechanism, a grinding mechanism and a feeding mechanism, the grinding rack comprises a machine shell, a crushing chamber and a grinding chamber which are communicated through a material guide plate are arranged in the machine shell, and the height of the crushing chamber is larger than that of the grinding chamber; the crushing mechanism is mounted in the crushing chamber and can crush grains, and the crushed grains can be conveyed into the grinding chamber through the guide plate; the grinding mechanism is arranged in the grinding chamber and comprises a grinding head and a grinding seat which are arranged up and down, and the grinding head can grind the crushed grains in the grinding seat through rotation; the feeding mechanism is arranged below the grinding base and can drive the grinding base to move up and down in the axial direction. According to the grinding method based on the multi-stage grain grinding device, the required fineness can be achieved without long time, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grain grinding equipment, and in particular to a grain multi-stage grinding device and a method thereof. Background Art

[0002] The grain grinder in the prior art can grind the grains after they are crushed, but during grinding, a continuous static grinding method with two grinding discs is adopted. When processing grains with higher hardness, due to the single grinding method, it often takes a long time to reach the required fineness, which not only reduces production efficiency, but also increases energy consumption. Summary of the invention

[0003] The object of the present invention is to provide a multi-stage grain grinding device and method thereof to solve the problems existing in the above-mentioned prior art, so as to achieve the required fineness without a long time and improve the production efficiency.

[0004] To achieve the above object, the present invention provides the following solutions: The present invention provides a multi-stage grain grinding device, comprising: A grinding frame, comprising a housing, wherein a crushing chamber and a grinding chamber connected via a material guide plate are arranged in the housing, and the height of the crushing chamber is greater than the height of the grinding chamber; A crushing mechanism is installed in the crushing chamber and can crush the grains. The crushed grains can be transported to the grinding chamber through the guide plate. A grinding mechanism is disposed in the grinding chamber, comprising a grinding head and a grinding seat arranged up and down, wherein the grinding head can grind the crushed grains in the grinding seat by rotating; The feeding mechanism is arranged below the grinding seat and can drive the grinding seat to move up and down along the axial direction.

[0005] Furthermore, the grinding frame also includes a bracket and a controller, the casing is fixedly mounted on the bracket, the controller is mounted on the front end surface of the casing, the casing is provided with a feed port and a discharge port, the feed port is located on the side of the crushing chamber and is connected to the crushing chamber, and the discharge port is located at the bottom of the grinding chamber.

[0006] Furthermore, the crushing mechanism includes a motor, a driving shaft, a first bushing and a crushing blade; a truncated cone-shaped first filter is arranged in the crushing chamber, the motor is mounted at the bottom of the casing, the driving shaft is fixedly mounted on the output shaft of the motor, and the driving shaft passes through the first filter; the first bushing is fixedly mounted on the driving shaft, the crushing blade is evenly mounted on the side wall of the first bushing, and the crushing blade is located above the first filter; the motor is connected to the controller.

[0007] Furthermore, a first synchronous wheel is provided on the top of the driving shaft, a first rotating shaft is provided on the top of the grinding head, the grinding head is rotatably connected to the casing through the first rotating shaft, a second synchronous wheel is provided on the top of the first rotating shaft, and the first synchronous wheel and the second synchronous wheel are connected through a closed synchronous belt drive.

[0008] Furthermore, the upper end surface of the grinding seat is provided with a concave truncated cone-shaped grinding groove, the bottom of the grinding head is a spherical top structure, the bottom of the grinding head is fitted with the upper end surface of the grinding groove of the grinding seat, and the bottom of the grinding groove is provided with a second filter screen connected to the bottom of the grinding groove.

[0009] Furthermore, the feeding mechanism includes a lifting sleeve, which includes a push rod and a bull's eye ball. The bull's eye ball is provided on the top of the push rod, and a corrugated slide is provided on the outer bottom ring of the grinding seat. The lower end surface of the corrugated slide is a centrally symmetrical wave-shaped structure; the bull's eye ball is connected to the corrugated slide in a rolling contact manner, and the lifting sleeve can rotate.

[0010] Furthermore, a second rotating shaft is fixedly provided at the bottom of the grinding seat, and the second rotating shaft passes through the center of the grinding seat; the lifting sleeve also includes a second shaft sleeve, and the second rotating shaft passes through the grinding seat and is fixedly connected to the second shaft sleeve, and the second shaft sleeve side wall is fixedly connected to the push rod; the bottom of the second rotating shaft is fixedly connected to an auger rod, and the auger rod is movably inserted in the discharge port.

[0011] Furthermore, the push rod is an L-shaped structure, the horizontal portion of the push rod is fixedly connected to the side wall of the second sleeve, the top of the vertical portion of the push rod away from one end of the second sleeve is provided with the bull's eye ball, and the horizontal portion of the push rod is provided with bristles that fit with the bottom of the second filter screen, and the diameter of the bristles is smaller than the filtering aperture of the second filter screen.

[0012] Furthermore, the feeding mechanism also includes a material distribution plate, which includes a partition and a fixed ring. The fixed ring is fixedly installed in the casing, and a plurality of vertically arranged partitions are evenly arranged on the fixed ring; the bottom of the grinding seat is provided with a plurality of guide grooves corresponding to the positions of the partitions, and the partitions are inserted in the corresponding guide grooves, and the partitions are slidably connected to the grinding seat, and the upper end surface of the partition is flush with the inner bottom of the grinding groove when it rises to the highest position.

[0013] Furthermore, it also includes a knocking mechanism installed on the bottom of the guide plate, the knocking mechanism includes a third sleeve, a spiral spring and a roller, the third sleeve is fixedly mounted on the drive shaft, the spiral spring is ringed on the side wall of the third sleeve, and the roller is provided at the end of the spiral spring. When the roller rotates with the third sleeve and the spiral spring, it can knock the bottom of the guide plate.

[0014] The present invention also provides a multi-stage grain grinding method, comprising the following steps: Turn on the controller, start the motor, and slowly and evenly add the grain raw materials to be ground through the feed inlet; The motor controls the driving shaft to rotate, driving the crushing blade to initially cut and crush the grains entering the crushing chamber. The crushed grain particles pass through the first filter screen and fall onto the guide plate, and then slide along the guide plate to the grinding chamber. The grinding head rotates under the transmission of the synchronous belt and closely cooperates with the grinding seat below to grind the grains entering the grinding chamber. During this process, the grinding seat reciprocates up and down due to the action of the lifting sleeve; After grinding, the grain powder passes through the second filter screen and falls into the discharge port at the bottom of the grinding chamber for discharge; After grinding, turn off the power and clean the grinding chamber and crushing chamber.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: The present invention realizes efficient and fine processing of grains by cooperating with a crushing mechanism and a grinding mechanism; the present invention can quickly crush large grain raw materials into smaller grains through the crushing mechanism, and these fine grains are more easily processed by the subsequent grinding mechanism, thereby significantly improving the efficiency of the entire grinding process and the quality of the final product; the grinding seat of the present invention can produce reciprocating motion in the up and down directions, and when the grinding seat moves downward, a large amount of grain particles enter the grinding seat, and when it rises, it cooperates with the rotating grinding head to apply pressure for grinding, which greatly improves the grinding efficiency, and during the grinding process, since the grinding seat moves up and down and the grinding head rotates, the grains are subjected to horizontal and longitudinal pressures at the same time, which on the one hand promotes the uniform distribution of the material in the grinding tank, and on the other hand also strengthens the physical force in the grinding process, further improving the grinding efficiency and fineness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a cross-sectional schematic diagram of a multi-stage grain grinding device in one embodiment of the present invention; Figure 2 It is a schematic diagram of the overall structure of a multi-stage grain grinding device in one embodiment of the present invention; Figure 3It is a cross-sectional front view of a multi-stage grain grinding device in one embodiment of the present invention; Figure 4 This is a schematic diagram of the transmission connection structure between the first rotating shaft and the driving shaft of the grain multi-stage grinding device in one embodiment of the present invention; Figure 5 A schematic diagram of a feeding mechanism of a multi-stage grain grinding device in one embodiment of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of point A; Figure 7 for Figure 3 An enlarged schematic diagram of point B; Figure 8 for Figure 3 Enlarged schematic diagram of point C.

[0018] In the figure: 1-grinding frame, 101-casing, 1011-feeding port, 1012-discharging port, 1013-material guide plate, 1014-first filter screen, 1015-crushing chamber, 1016-grinding chamber, 102-bracket, 103-controller, 2-crushing mechanism, 201-motor, 202-drive shaft, 2021-first synchronous wheel, 2022-synchronous belt, 203-crushing blade, 204-first shaft sleeve, 3-grinding mechanism, 301-grinding head, 3011-first rotating shaft, 3012- The second synchronous wheel, 302-grinding seat, 3021-guide groove, 3022-second filter, 3023-second rotating shaft, 3024-corrugated slide, 3025-grinding groove, 303-auger rod, 4-feeding mechanism, 401-distribution plate, 4011-partition plate, 4012-fixing ring, 402-lifting sleeve, 4021-thrust rod, 4022-bull's eye ball, 4023-brush, 4024-second shaft sleeve, 5-beating mechanism, 501-third shaft sleeve, 502-spiral spring, 503-roller. DETAILED DESCRIPTION

[0019] 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.

[0020] The object of the present invention is to provide a multi-stage grain grinding device and method thereof to solve the problems existing in the above-mentioned prior art, so as to achieve the required fineness without a long time and improve the production efficiency.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The grain grinder in the prior art grinds the grains after crushing them. However, during grinding, it takes a long time to achieve the required fineness due to continuous static grinding, which not only reduces production efficiency but also increases energy consumption. In addition, the grains will be continuously heated during the grinding process, affecting the grain quality. In order to solve this problem, the present invention provides a multi-stage grain grinding device, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the device includes a grinding frame 1, in which a crushing mechanism 2, a grinding mechanism 3, a feeding mechanism 4 and a knocking mechanism 5 are arranged; the grinding frame 1 includes a housing 101, in which a crushing chamber 1015 and a grinding chamber 1016 connected by a guide plate 1013 are arranged, and the height of the crushing chamber 1015 is greater than the height of the grinding chamber 1016, and the crushing mechanism 2 and the grinding mechanism 3 are separated by a certain distance, so that the grains can be cooled during the sliding process to avoid the grains from being denatured at a continuous high temperature; the crushing mechanism 2 is installed in the crushing chamber 1015, and can crush the grains, and the crushed grains can be transported to the grinding chamber 1016 through the guide plate 1013; the grinding mechanism 3 is arranged in the grinding chamber 1016, including a grinding head 301 and a grinding seat 302 arranged up and down, and the grinding head 301 can grind the crushed grains in the grinding seat 302 by rotating; the feeding mechanism 4 is arranged below the grinding seat 302, and can drive the grinding seat 302 to move up and down along the axial direction. Through the cooperation of the crushing mechanism 2, the grinding mechanism 3 and the feeding mechanism 4, the grinding seat 302 can generate reciprocating motion in the up and down directions. When the grinding seat 302 moves downward, a large amount of grain particles enter the grinding groove 3025 of the grinding seat 302. When the grinding seat 302 rises, it approaches the grinding head 301. The rotating grinding head 301 applies pressure for rapid grinding, which greatly improves the grinding efficiency. In the grinding process, the grains are simultaneously subjected to the horizontal pressure provided by the rotation of the grinding head 301 and the longitudinal pressure provided by the up and down movement of the grinding seat 302. On the one hand, this promotes the uniform distribution of the material in the grinding groove 3025. On the other hand, it also strengthens the physical force in the grinding process, further improves the grinding efficiency and fineness, and solves the problems of low grinding efficiency, uneven fineness, poor discharge and difficult maintenance of existing grinding equipment.

[0023] In one embodiment, the grinding frame 1 further includes a bracket 102 and a controller 103, the housing 101 is fixedly mounted on the bracket 102, the controller 103 is mounted on the front end surface of the housing 101, a crushing chamber 1015 and a grinding chamber 1016 are arranged in the housing 101, a guide plate 1013 is arranged between the crushing chamber 1015 and the grinding chamber 1016, a feed port 1011 is arranged on the side of the crushing chamber 1015, and a discharge port 1012 is arranged at the bottom of the grinding chamber 1016; The crushing mechanism 2 includes a motor 201, a drive shaft 202, a first sleeve 204 and a crushing blade 203. The crushing mechanism 2 is installed in a crushing chamber 1015. A truncated cone-shaped first filter 1014 is provided in the crushing chamber 1015. The motor 201 is installed at the bottom of the housing 101. The drive shaft 202 is fixedly installed on the output shaft of the motor 201, and the drive shaft 202 passes through the first filter 1014. The first sleeve 204 is fixedly installed on the drive shaft 202. The crushing blade 203 is evenly installed on the side wall of the first sleeve 204, and the crushing blade 203 is located at the first filter 1014. 14 above; the motor 201 is connected to the controller 103, so that the motor 201 can be controlled by the controller 103; the grinding mechanism 3 includes a grinding head 301 and a grinding seat 302, the grinding mechanism 3 is installed in the grinding chamber 1016, the upper end surface of the grinding seat 302 is provided with a concave truncated cone-shaped grinding groove 3025, the bottom of the grinding head 301 is a spherical top structure, the bottom of the grinding head 301 is in contact with the upper end surface of the grinding groove 3025 of the grinding seat 302, and the bottom of the grinding groove 3025 is provided with a second filter 3022 connected to the bottom of the grinding groove 3025; the feeding mechanism 4 includes The material distribution plate 401 and the lifting sleeve 402, the bottom of the grinding head 301 is provided with a second rotating shaft 3023, the second rotating shaft 3023 passes through the grinding seat 302 and is fixedly connected with the second shaft sleeve 4024 of the lifting sleeve 402, the grinding seat 302 is slidably connected with the housing 101, so that the grinding seat 302 can slide up and down; the top rod 4021 of the lifting sleeve 402 is fixedly arranged on the side wall of the second shaft sleeve 4024, the top of the top rod 4021 is provided with a bull's eye ball 4022, and the outer bottom ring of the grinding seat 302 is provided with a corrugated slide 3024, and the lower end surface of the corrugated slide 3024 is a centrally symmetrical wave shape Structure; the bull's eye ball 4022 is connected to the corrugated slide 3024 in rolling contact, and the lifting sleeve 402 can rotate, so that the bull's eye ball 4022 rotates along the corrugated slide 3024. Since the corrugated slide 3024 is a wave-shaped structure with ups and downs, the lifting sleeve 402 is fixed in the up and down directions and only makes rotational movement. Therefore, when the bull's eye ball 4022 rotates along the corrugated slide 3024, the grinding seat 302 of the corrugated slide 3024 with a wave-shaped structure will reciprocate up and down; thereby, the feeding mechanism 4 installed at the lower end of the grinding mechanism 3 realizes the lifting of the grinding seat 302. The knocking mechanism 5 of this embodiment includes a third sleeve 501, a spiral spring 502 and a roller 503. The knocking mechanism 5 is installed at the bottom of the guide plate 1013 to knock it. The spiral spring 502 and the roller 503 continuously knock the guide plate 1013 to ensure the stable flow of materials, promote the effective discharge of the filter screen, reduce the risk of blockage, and extend the service life of the equipment.

[0024] When the present invention is working, after grains are put into the casing 101, the grains are first crushed into fine particles by the crushing mechanism 2, and then enter the grinding chamber 1016 to be ground by the grinding mechanism 3. The grinding seat 302 of the grinding mechanism 3 is driven by the feeding mechanism 4 to move back and forth up and down to improve the grinding efficiency, and the knocking mechanism 5 is used to improve the overall discharge effect of the equipment.

[0025] In order to make grinding and crushing synchronous and reduce the number of driving structures, this embodiment adopts a motor 201, which can synchronously drive crushing and grinding operations. In order to achieve this function, a first rotating shaft 3011 is provided on the top of the grinding head 301, and the grinding head 301 is rotatably connected with the housing 101 through the first rotating shaft 3011. A second synchronous wheel 3012 is provided on the top of the first rotating shaft 3011 of the grinding head, and a first synchronous wheel 2021 is provided on the top of the driving shaft 202. A synchronous belt 2022 is provided on the first synchronous wheel 2021 and the second synchronous wheel 3012, and the diameter ratio of the first synchronous wheel 2021 and the second synchronous wheel 3012 is 1:5. The motor 201 drives the driving shaft 202 to rotate, and the driving shaft 202 drives the grinding head 301 to rotate through the first synchronous wheel 2021, the second synchronous wheel 3012 and the synchronous belt 2022, so that the equipment can be crushed and ground at the same time.

[0026] In order to enable the material to be smoothly transferred between the crushing chamber 1015 and the grinding chamber 1016, a knocking mechanism 5 is designed. The third sleeve 501 of the knocking mechanism 5 is fixedly mounted on the driving shaft 202, and the spiral spring 502 is evenly mounted on the third sleeve 501. The end of the spiral spring 502 is provided with a roller 503 that is in sliding contact with the guide plate 1013. When the motor 201 drives the driving shaft 202 to rotate, the driving shaft 202 drives the spiral spring 502 to rotate, and the roller 503 on the spiral spring 502 continuously knocks the guide plate 1013, thereby accelerating the grain particles on the guide plate 1013 to slide toward the grinding chamber 1016, and at the same time drives the overall shaking of the housing 101, promoting the discharge of the first filter screen 1014 and the second filter screen 3022, and the roller 503 reduces the friction between the guide plate 1013 and the guide plate 1013, thereby improving the service life of the equipment.

[0027] In order to keep the grains in the crushing chamber 1015 before crushing, and to separate the crushed grain particles from the uncrushed grains, in a specific embodiment, a first filter screen 1014 is provided in the crushing chamber 1015. The first filter screen 1014 is a truncated cone structure. The motor 201 is mounted at the bottom of the housing 101, the drive shaft 202 is fixedly mounted on the output shaft of the motor 201, the first sleeve 204 is fixedly mounted on the drive shaft 202, and the crushing blades 203 are evenly mounted on the side of the first sleeve 204 and are located above the first filter screen 1014. The motor 201 drives the drive shaft 202 to rotate, thereby driving the crushing blades 203 to cut and crush the materials in the crushing chamber 1015, cutting the grains into fine particles, which then enter the grinding chamber 1016 through the first filter screen 1014 for grinding, thereby improving the grinding fineness.

[0028] In one embodiment, the grinding seat 302 is installed at the lower end of the grinding head 301, and the upper end surface of the grinding seat 302 is provided with a grinding groove 3025. The bottom of the grinding head 301 is a spherical top structure, and the grinding groove 3025 is a concave truncated cone-shaped notch. The bottom of the grinding head 301 fits the upper end surface of the grinding seat 302, and the bottom of the grinding groove 3025 is provided with a second filter 3022. When the grinding head 301 rotates, the grain particles in the grinding groove 3025 are ground into powder, and the grinding head 301 with a spherical top structure is adapted to the truncated cone-shaped notch of the grinding groove 3025. The grinding mechanism 3 adopts a design combining a spherical top structure grinding head 301 with a truncated cone-shaped grinding groove 3025. This design not only makes the distance between the grinding head 301 and the grinding groove 3025 gradually decrease from the outside to the inside, but also ensures that the material is gradually subjected to greater pressure during the grinding process, thereby achieving a higher grinding accuracy.

[0029] During the rotation of the grinding head 301, the lifting sleeve 402 is driven to rotate, so that the bull's eye ball 4022 slides along the annular corrugated slide 3024. Since the lower end surface of the annular corrugated slide 3024 is a wavy structure, the grinding seat 302 will slide back and forth up and down under the action of gravity. As a result, during the downward movement of the grinding seat 302, the grains enter the grinding groove 3025. During the upward movement, the grinding seat 302 and the grinding head 301 squeeze the grains for grinding, and the grains are ground into powder and fall from the second filter 3022. Through the clever use of the lifting sleeve 402 and the corrugated slide 3024, the grinding seat 302 can produce reciprocating motion in the up and down directions. In conjunction with the partition 4011 structure, when the grinding seat 302 moves downward, a large amount of grain particles enter the grinding seat 302. When rising, the grinding head 301 applies pressure for grinding, which greatly improves the grinding efficiency. During the grinding process, the grains are subjected to horizontal and longitudinal pressures at the same time. On the one hand, this promotes the uniform distribution of the material in the grinding groove 3025. On the other hand, it also strengthens the physical force during the grinding process, further improving the grinding efficiency and fineness.

[0030] In the current grinding machine, during the grinding process, fine materials are easy to clog the filter screen, resulting in poor discharge. In order to solve this problem, in the embodiment of the present invention, the upper end surface of the top rod 4021 is provided with bristles 4023 that fit the second filter screen 3022. The diameter of the bristles 4023 is smaller than the filter aperture of the second filter screen 3022, and the bristles 4023 are made of steel wire. During the rotation of the top rod 4021, the bristles 4023 are also driven to brush the second filter screen 3022, pushing the grain particles stuck in the second filter screen 3022 upward, returning them to the grinding tank 3025 for re-grinding, and at the same time improving the permeability of the second filter screen 3022.

[0031] The material distribution plate 401 of this embodiment includes a partition 4011 and a fixing ring 4012. The partition 4011 is evenly installed on the upper end surface of the fixing ring 4012. The fixing ring 4012 is fixedly installed in the casing 101. The bottom of the grinding seat 302 is provided with a guide groove 3021 corresponding to the position of the partition 4011. The partition 4011 is inserted into the guide groove 3021 and is slidably connected with the grinding seat 302. The upper end surface of the partition 4011 is flush with the bottom of the grinding groove 3025. When the grinding seat 302 slides downward, the partition 4011 divides the grinding groove 3025 into several fan-shaped areas connected at the center; when the grinding seat 302 moves upward, the top of the partition 4011 is flush with the bottom of the grinding groove 3025 of the grinding seat 302, and will not interfere with the relative rotation of the grinding head 301 and the grinding groove 3025, so that the grinding head 301 squeezes the grains from the upper end; the partition 4011 plays a limiting role, so that the grinding seat 302 can only move up and down along the partition 4011 and cannot be offset, thereby ensuring the accuracy of the grinding position.

[0032] In a preferred embodiment, an auger rod 303 is provided at the bottom of the second rotating shaft 3023, and the auger rod 303 is inserted into the discharge port 1012 and is rotatably connected to the housing 101. The auger rod 303 is driven to rotate by the second rotating shaft 3023, thereby increasing the discharge pressure, and when the discharge port 1012 is connected to a horizontal discharge pipe, the discharge can also be smooth.

[0033] The present invention also provides a multi-stage grain grinding method, comprising the following steps: Make sure the equipment is in a safe working environment, then connect the equipment to a stable power source, turn on the switch on the controller 103, and start the motor 201. At this time, slowly and evenly add the grain raw materials to be ground through the feed port 1011 of the crushing chamber 1015. It is particularly important to control the feeding speed to avoid abnormal operation or damage of the equipment due to overload.

[0034] After starting, the motor 201 controls the driving shaft 202 to rotate, driving the crushing blade 203 to perform preliminary cutting and crushing on the grains entering the crushing chamber 1015. The grain particles after preliminary processing become smaller. These fine particles can smoothly pass through the first filter 1014 and slide along the guide plate 1013 to the grinding chamber 1016. At this stage, the particle size of the grains has been greatly reduced, which is fully prepared for the subsequent fine grinding.

[0035] The motor 201 works continuously, and drives the roller 503 on the spiral spring 502 to rotate through the drive shaft 202. The roller 503 continuously strikes the bottom of the guide plate 1013 during rotation, thereby forming a vibration effect, which effectively accelerates the transfer process of grain particles along the guide plate 1013 to the grinding chamber 1016. The striking action of the roller 503 also causes slight vibration of the casing 101, which helps to accelerate the falling of residual materials on the first filter screen 1014 and the second filter screen 3022, thereby ensuring the smooth operation of the entire system.

[0036] When the grain particles successfully enter the grinding chamber 1016, the first rotating shaft 3011 of the grinding head 301 starts to rotate under the transmission action of the synchronous belt 2022. The first rotating shaft 3011 is installed on the casing 101 with bearings and bearing seats at a position close to the grinding head 301, thereby ensuring that the installation position of the grinding head 301 and the first rotating shaft 3011 is stable and reliable, thereby driving the grinding head 301 to rotate and cooperate closely with the grinding seat 302 below to perform a more refined grinding process on the grains. During this process, the grinding seat 302 will produce up and down reciprocating motion due to the action of the lifting sleeve 402. This design not only helps the grain particles in the central area to be more evenly distributed in the grinding groove 3025, but also can enhance the physical force during the grinding process, thereby achieving a better grinding effect.

[0037] After grinding is completed, fine grain powder will fall into the bottom of the grinding chamber 1016 through the second filter screen 3022. At this time, the auger rod 303 located at the discharge port 1012 continues to rotate. By increasing the discharge pressure, smooth discharge is ensured even when the discharge port 1012 is connected to a transverse discharge pipe. This design not only improves the discharge efficiency, but also helps to keep the working environment clean.

[0038] After use, turn off the power supply and clean the grinding chamber 1016 and the crushing chamber 1015 in time to maintain the cleanliness of the equipment. This can also prevent residual substances from affecting the quality of grains used next time. Regular maintenance and care are essential to keep the equipment in good condition, which can not only extend the service life of the equipment, but also ensure that the best grinding effect can be obtained every time it is used.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-stage grain grinding device, characterized in that: include: A grinding frame, comprising a housing, wherein a crushing chamber and a grinding chamber connected via a material guide plate are arranged in the housing, and the height of the crushing chamber is greater than the height of the grinding chamber; A crushing mechanism is installed in the crushing chamber and can crush the grains. The crushed grains can be transported to the grinding chamber through the guide plate. A grinding mechanism is disposed in the grinding chamber, comprising a grinding head and a grinding seat arranged up and down, wherein the grinding head can grind the crushed grains in the grinding seat by rotating; The feeding mechanism is arranged below the grinding seat and can drive the grinding seat to move up and down along the axial direction.

2. The multi-stage grain grinding device according to claim 1, characterized in that: The grinding frame also includes a bracket and a controller, the casing is fixedly mounted on the bracket, the controller is mounted on the front end surface of the casing, the casing is provided with a feed port and a discharge port, the feed port is located on the side of the crushing chamber and is communicated with the crushing chamber, and the discharge port is located at the bottom of the grinding chamber.

3. The multi-stage grain grinding device according to claim 2, characterized in that: The crushing mechanism includes a motor, a driving shaft, a first bushing and a crushing blade; a truncated cone-shaped first filter is arranged in the crushing chamber, the motor is mounted on the bottom of the casing, the driving shaft is fixedly mounted on the output shaft of the motor, and the driving shaft passes through the first filter; the first bushing is fixedly mounted on the driving shaft, the crushing blade is evenly mounted on the side wall of the first bushing, and the crushing blade is located above the first filter; the motor is connected to the controller; a first synchronous wheel is arranged on the top of the driving shaft, a first rotating shaft is arranged on the top of the grinding head, the grinding head is rotatably connected to the casing through the first rotating shaft, a second synchronous wheel is arranged on the top of the first rotating shaft, and the first synchronous wheel and the second synchronous wheel are connected by a closed synchronous belt transmission.

4. The multi-stage grain grinding device according to claim 2, characterized in that: The upper end surface of the grinding seat is provided with a concave truncated cone-shaped grinding groove, the bottom of the grinding head is a spherical top structure, the bottom of the grinding head is fitted with the upper end surface of the grinding groove of the grinding seat, and the bottom of the grinding groove is provided with a second filter screen connected to the bottom of the grinding groove.

5. The multi-stage grain grinding device according to claim 4, characterized in that: The feeding mechanism includes a lifting sleeve, which includes a push rod and a bull's eye ball. The bull's eye ball is provided on the top of the push rod, and a corrugated slide is provided on the outer bottom ring of the grinding seat. The lower end surface of the corrugated slide is a centrally symmetrical wave-shaped structure; the bull's eye ball is connected to the corrugated slide in a rolling contact manner, and the lifting sleeve can rotate.

6. The multi-stage grain grinding device according to claim 5, characterized in that: A second rotating shaft is fixedly provided at the bottom of the grinding seat, and the second rotating shaft passes through the center of the grinding seat; the lifting sleeve also includes a second shaft sleeve, and the second rotating shaft is fixedly connected to the second shaft sleeve after passing through the grinding seat, and the second shaft sleeve side wall is fixedly connected with the push rod; the bottom of the second rotating shaft is fixedly connected with an auger rod, and the auger rod is movably inserted in the discharge port.

7. The multi-stage grain grinding device according to claim 6, characterized in that: The push rod is an L-shaped structure, the horizontal portion of the push rod is fixedly connected to the side wall of the second sleeve, the top of the vertical portion of the push rod away from one end of the second sleeve is provided with the bull's eye ball, and the horizontal portion of the push rod is provided with bristles that fit with the bottom of the second filter screen, and the diameter of the bristles is smaller than the filtering aperture of the second filter screen.

8. The multi-stage grain grinding device according to claim 5, characterized in that: The feeding mechanism also includes a material distribution plate, which includes a partition and a fixed ring. The fixed ring is fixedly installed in the casing, and a plurality of vertically arranged partitions are evenly arranged on the fixed ring; the bottom of the grinding seat is provided with a plurality of guide grooves corresponding to the positions of the partitions, and the partitions are inserted in the corresponding guide grooves, and the partitions are slidably connected to the grinding seat, and the upper end surface of the partition is flush with the inner bottom of the grinding groove when it rises to the highest position.

9. The multi-stage grain grinding device according to claim 3, characterized in that: It also includes a knocking mechanism installed on the bottom of the guide plate, the knocking mechanism includes a third sleeve, a spiral spring and a roller, the third sleeve is fixedly mounted on the drive shaft, the spiral spring is annularly arranged on the side wall of the third sleeve, and the roller is arranged at the end of the spiral spring. When the roller rotates with the third sleeve and the spiral spring, it can knock the bottom of the guide plate.

10. A method for multi-stage grain grinding using the multi-stage grain grinding device according to any one of claims 1 to 9, characterized in that: The steps include: Turn on the controller, start the motor, and slowly and evenly add the grain raw materials to be ground through the feed inlet; The motor controls the driving shaft to rotate, driving the crushing blade to initially cut and crush the grains entering the crushing chamber. The crushed grain particles pass through the first filter screen and fall onto the guide plate, and then slide along the guide plate to the grinding chamber. The grinding head rotates under the transmission of the synchronous belt and closely cooperates with the grinding seat below to grind the grains entering the grinding chamber. During this process, the grinding seat reciprocates up and down due to the action of the lifting sleeve; After grinding is completed, the grain powder falls through the second filter screen into the discharge port at the bottom of the grinding chamber for discharge; After grinding, turn off the power and clean the grinding chamber and crushing chamber.

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