Malt crushing device for brewing and crushing method thereof

Abstract

The application provides a malt crushing device for brewing and a crushing method thereof, and relates to the field of mechanical engineering. The device comprises a machine body, a feeding hopper arranged on the machine body, a crushing roller rotatably arranged in the machine body, and a discharging hopper arranged on the machine body. In the prior art, when a large amount of malt is crushed simultaneously, part of the malt is not completely crushed, and the crushing quality of the malt is low. The transfer mechanism is arranged to drive the filter screen to rotate and make the malt that is not completely crushed fall into the working area of the two pairs of crushing rollers again, so that the malt that is not completely crushed is crushed again, and the crushing quality of the malt is improved. The transfer mechanism is arranged to solve the problem of low crushing efficiency caused by the accumulation of materials on the surface of the crushing roller in the prior art. The transfer mechanism is arranged to solve the problem of low filtering efficiency caused by the accumulation of materials in the prior art.

Description

Technical Field

[0001] This invention relates to the field of mechanical engineering, and more specifically, to a malt crushing device and a crushing method for brewing. Background Technology

[0002] In the brewing process, to ensure the smooth progress of brewing, malt needs to undergo pretreatment. The malt needs to pass through a permanent magnet drum to remove iron impurities, a destoner to remove heavy impurities such as stones, and a dust collector to remove dust, in order to ensure the purity of the malt and the smooth progress of subsequent processing. A brewing malt crushing device is a special device used to crush pretreated malt. Its main function is to provide malt raw materials suitable for fermentation in the brewing process. Existing brewing malt crushing devices include roller crushers. However, when too many malts are crushed at the same time, some malt will not be completely crushed, resulting in lower crushing quality.

[0003] For example, the specification of the "Craft Beer Malt Crushing Device" disclosed in Chinese Utility Model Patent (Application No.: 202420761918.7) states that: in the process of crushing craft beer malt, when too many craft beer malts are crushed at the same time, some craft beer malt will not be completely crushed, resulting in poor crushing effect of craft beer malt and thus affecting the crushing quality of the crushing device; the above patent can corroborate the defects of the prior art.

[0004] Therefore, we have made improvements to this by proposing a malt crushing device and crushing method for brewing. Summary of the Invention

[0005] The purpose of this invention is to address the problem that existing malt grinders, when grinding too many malts simultaneously, sometimes fail to grind all the malt completely, resulting in low-quality malt grinding.

[0006] To achieve the above-mentioned objectives, the present invention provides a malt crushing device and a crushing method for brewing, in order to improve the aforementioned problems.

[0007] The application is as follows: It includes a machine body, a feed hopper mounted on the machine body, a crushing roller rotatably mounted on the machine body, a discharge hopper mounted on the machine body, a motor mounted on the machine body, and a transfer mechanism mounted on the machine body; The transfer mechanism includes a filter screen rotatably disposed within the machine body, an arc-shaped groove disposed on the machine body, a sliding column slidably disposed on the arc-shaped groove, a drive shaft rotatably disposed on the machine body, transmission wheels disposed on the drive shaft and the crushing roller respectively, a conveyor belt disposed on the two transmission wheels, a triangular seat disposed on the drive shaft, and a flipping plate rotatably disposed on the triangular seat.

[0008] As a preferred technical solution of this application, the motor output end is connected to the crushing roller, and the sliding column is connected to the filter screen.

[0009] As a preferred technical solution of this application, a rectangular block is provided on the triangular seat, an adjusting shaft is rotatably provided on the rectangular block, a flipping plate is provided on the adjusting shaft, the adjusting shaft and the rectangular block are connected by a torsion spring, and the flipping plate is adapted to the crushing roller.

[0010] As a preferred technical solution of this application, the triangular base is provided with a strip groove, the rectangular block is slidably disposed on the strip groove, and springs are provided on the corresponding surfaces of the strip groove and the rectangular block.

[0011] As a preferred technical solution of this application, the material of the flipping plate is rubber.

[0012] As a preferred technical solution of this application, a second filter screen is provided inside the machine body, and the first filter screen and the second filter screen are compatible.

[0013] As a preferred technical solution of this application, a cylinder is provided on the machine body, a synchronous shaft is rotatably provided on the machine body, a connecting rod is provided on the synchronous shaft, and a sliding column is provided on the connecting rod.

[0014] As a preferred technical solution of this application, the cylinder output end is provided with a transmission plate, the transmission plate is slidably disposed on the synchronous shaft, the synchronous shaft is provided with a spiral groove, the transmission plate is provided with a pusher column, and the pusher column is slidably disposed on the spiral groove.

[0015] As a preferred technical solution of this application, a wedge-shaped block is provided on the filter screen, and the wedge-shaped block is adapted to the flipping plate.

[0016] The method for crushing malt for brewing is as follows: Step S1: Place the malt into the feed hopper. The malt enters the central area of ​​the two crushing rollers. The motor drives the two crushing rollers to rotate relative to each other. The relatively rotating crushing rollers crush the malt. The crushed malt enters the surface of the first filter screen. The crushing rollers drive the transmission wheel to rotate synchronously. The transmission wheel drives the conveyor belt to rotate synchronously. The conveyor belt drives the drive shaft and the transmission wheel to rotate synchronously. The drive shaft drives the triangular seat and the tilting plate to rotate synchronously. The tilting plate stirs the malt that falls onto the surface of the first filter screen. Step S2: Start the cylinder. When the cylinder drives the transmission plate to move along the synchronous shaft, the push column on the transmission plate moves synchronously. The push column slides along the spiral groove and squeezes the spiral groove, causing the synchronous shaft to rotate. The synchronous shaft drives the connecting rod to rotate, and the connecting rod drives the sliding column to slide along the arc groove. When the sliding column moves to the other end of the arc groove, the filter screen and the sliding column move synchronously. At this time, the malt on the surface of the filter screen that has not been completely crushed falls back into the working area of ​​the two pairs of crushing rollers, so that the malt that has not been completely crushed is crushed a second time. In step S3, when the malt that has not been completely crushed is crushed a second time, the crushed malt falls onto filter screen two. Filter screen two filters the crushed malt. If there is still malt that has not been completely crushed on the surface of filter screen two, the cylinder output end is reset, which in turn resets the sliding column and filter screen one. Filter screen one is reset and pushes the malt that has not been completely crushed onto the surface of the crushing roller. The motor drives the crushing roller to rotate, and the two pairs of crushing rollers crush the malt that has not been completely crushed. This method ensures that the malt discharged from the hopper is completely crushed. In step S4, when the two crushing rollers rotate relative to each other, the elasticity of the torsion spring causes the flipping plate to press tightly against the surface of the crushing rollers. At this time, the flipping plate cleans the surface of the crushing rollers. When the crushing rollers and the flipping plate come into contact, the elasticity of the spring causes the rectangular block, the adjusting shaft and the flipping plate to self-adaptively move, so that the flipping plate maintains uniform contact while cleaning the crushing rollers.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. In order to solve the problem that some malt is not completely crushed when crushing too many malts at the same time in the existing malt crusher, resulting in low malt crushing quality, this application sets up a transfer mechanism, which drives the filter screen to rotate and causes the incompletely crushed malt to fall back into the working area of ​​two pairs of crushing rollers, thereby realizing secondary crushing of the incompletely crushed malt and improving the crushing quality of malt. 2. By using a transfer mechanism, the surface of the crushing roller is cleaned by a flipping plate, preventing malt powder and impurities from accumulating on the surface of the crushing roller, thus improving the crushing efficiency of the crushing roller and solving the problem of low crushing efficiency caused by material accumulation on the surface of the crushing roller in the prior art. 3. The set transfer mechanism, through the rotation of the flipping plate, realizes the stirring of the crushed malt, improves the filtration efficiency of the first filter screen, and solves the problem of low filtration efficiency caused by material accumulation in the existing technology. Attached Figure Description

[0018] Figure 1 A schematic diagram of the malt grinding device for brewing provided in this application; Figure 2The brewing malt grinding apparatus provided in this application Figure 1 Schematic diagram of the other side; Figure 3 A schematic diagram of the internal structure of the brewing malt crushing device provided in this application; Figure 4 A two-dimensional structural diagram of the internal structure of the brewing malt crushing device provided in this application; Figure 5 A schematic diagram of the overall structure of the arc-shaped trough of the brewing malt crushing device provided in this application; Figure 6 A schematic diagram of the overall structure of the crushing roller of the brewing malt crushing device provided in this application; Figure 7 The brewing malt grinding apparatus provided in this application Figure 6 Enlarged structural diagram of area A in the middle; Figure 8 A schematic diagram of the rotating structure of the filter screen of the brewing malt crushing device provided in this application; Figure 9 A partial cross-sectional schematic diagram of the triangular base of the brewing malt crushing device provided in this application.

[0019] The image shows: 1. Machine body; 101. Feed hopper; 102. Crushing roller; 103. Discharge hopper; 104. Motor; 2. Transfer mechanism; 201. Filter screen one; 202. Arc groove; 203. Sliding column; 204. Drive shaft; 205. Transmission wheel; 206. Conveyor belt; 207. Triangular seat; 208. Flipping plate; 209. Rectangular block; 210. Adjusting shaft; 211. Torsion spring; 212. Strip groove; 213. Spring; 214. Filter screen two; 215. Cylinder; 216. Synchronous shaft; 217. Connecting rod; 218. Transmission plate; 219. Spiral groove; 220. Pushing column; 221. Wedge block. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0021] As described in the background section, when a malt grinder grinds too many malts at the same time, some malts will not be completely ground, resulting in lower grinding quality.

[0022] To solve this technical problem, the present invention provides a malt crushing device and a crushing method for brewing, which is applied to mechanical engineering.

[0023] For details, please refer to Figures 1-9 As shown, the brewing malt crushing device specifically includes: a machine body 1, a feed hopper 101 mounted on the machine body 1, a crushing roller 102 rotatably mounted inside the machine body 1, a discharge hopper 103 mounted on the machine body 1, a motor 104 mounted on the machine body 1, and a transfer mechanism 2 mounted on the machine body 1. In the prior art, the feed hopper 101 is used to guide the malt to be crushed, ensuring that the malt can enter the machine body 1 evenly. It is provided with two relatively rotating crushing rollers 102, and the malt is squeezed between the two crushing rollers 102 to achieve the crushing of the malt. The discharge hopper 103 is used to receive the crushed malt powder and guide it to the discharge. The transfer mechanism 2 includes a filter screen 201 rotatably disposed inside the machine body 1, an arc-shaped groove 202 disposed on the machine body 1, a sliding column 203 slidably disposed on the arc-shaped groove 202, a drive shaft 204 rotatably disposed on the machine body 1, transmission wheels 205 respectively disposed on the drive shaft 204 and the crushing roller 102, a conveyor belt 206 disposed on the two transmission wheels 205, a triangular seat 207 disposed on the drive shaft 204, and a flipping plate 208 rotatably disposed on the triangular seat 207.

[0024] The malt crushing device and crushing method for brewing provided by this invention address the problem in the prior art where some malt is not completely crushed when crushing too many malts at the same time, resulting in low malt crushing quality. This application improves the malt crushing quality by setting a transfer mechanism 2, which drives the filter screen 201 to rotate and causes the incompletely crushed malt to fall back into the working area of ​​the two pairs of crushing rollers 102. The transfer mechanism 2 is set up to clean the surface of the crushing roller 102 by the flipping plate 208, which prevents malt powder and impurities from accumulating on the surface of the crushing roller 102, improves the crushing efficiency of the crushing roller 102, and solves the problem of low crushing efficiency caused by material accumulation on the surface of the crushing roller 102 in the prior art. By using the transfer mechanism 2 and the rotation of the flipping plate 208, the crushed malt is stirred, which improves the filtration efficiency of the filter screen 201 and solves the problem of low filtration efficiency caused by material accumulation in the prior art.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a malt crushing device for brewing has a motor 104 output terminal connected to a crushing roller 102, and a sliding column 203 connected to a filter screen 201. In use, malt is placed in the feed hopper 101, and the malt enters the central area of ​​the two crushing rollers 102. The motor 104 drives the two crushing rollers 102 to rotate relative to each other. The relatively rotating crushing rollers 102 crush the malt, and the crushed malt enters the surface of the filter screen 201. The crushing rollers 102 drive the drive wheel 205 to rotate synchronously, the drive wheel 205 drives the conveyor belt 206 to rotate synchronously, the conveyor belt 206 drives the drive shaft 204 to rotate synchronously along with the drive wheel 205, and the drive shaft 204 drives the triangular seat 207 and the tilting plate 208 to rotate synchronously. The tilting plate 208 then drops the malt into the filter screen. The malt on the surface of screen 201 is stirred to prevent the crushed malt from accumulating on the surface of screen 201. In the prior art, the relatively rotating crushing roller 102 causes the machine body 1 to vibrate during crushing. By vibrating and stirring the crushed malt, the filtration efficiency of screen 201 is improved, allowing screen 201 to quickly screen out malt that has not been completely crushed. By rotating the sliding column 203, the sliding column 203 slides along the arc-shaped groove 202. When the sliding column 203 moves to the other end of the arc-shaped groove 202, screen 201 and the sliding column 203 move synchronously. Figure 8 As shown, the malt that was not completely crushed on the surface of the filter screen 201 then falls back into the working area of ​​the two pairs of crushing rollers 102, so that the malt that was not completely crushed is crushed a second time, which improves the crushing quality of the malt. Furthermore, a rectangular block 209 is provided on the triangular seat 207, and an adjusting shaft 210 is rotatably provided on the rectangular block 209. A flipping plate 208 is provided on the adjusting shaft 210. The adjusting shaft 210 and the rectangular block 209 are connected by a torsion spring 211. The flipping plate 208 is compatible with the crushing roller 102. like Figure 4As shown, when the two crushing rollers 102 rotate relative to each other, the elasticity of the torsion spring 211 causes the flipping plate 208 to be in close contact with the surface of the crushing rollers 102. At this time, the flipping plate 208 cleans the surface of the crushing rollers 102 to prevent malt powder and impurities from accumulating on the surface of the crushing rollers 102, thereby preventing the accumulated material from affecting the contact area of ​​the crushing rollers 102 during operation, which would cause some malt to not be fully crushed. This method improves the crushing efficiency. Furthermore, a strip groove 212 is provided on the triangular base 207, and a rectangular block 209 is slidably disposed on the strip groove 212. A spring 213 is provided on the corresponding surfaces of the strip groove 212 and the rectangular block 209. When the crushing roller 102 and the flipping plate 208 come into contact, the elasticity of the spring 213 causes the rectangular block 209, the adjusting shaft 210 and the flipping plate 208 to adapt to the displacement, so that the flipping plate 208 maintains uniform contact while cleaning the crushing roller 102, preventing uneven contact between the flipping plate 208 and the surface of the crushing roller 102 from causing local wear. Furthermore, the flip plate 208 is made of rubber. Rubber material has good flexibility and can better adapt to the uneven and bumpy parts of the surface of the crushing roller 102, so that the flip plate 208 can fit tightly against the surface of the crushing roller 102 and ensure the cleaning effect of the crushing roller 102. The flip plate 208 is detachable, which makes it convenient for staff to replace it. The transfer mechanism 2 drives the filter screen 201 to rotate, causing the incompletely crushed malt to fall back into the working area of ​​the two pairs of crushing rollers 102, thus achieving secondary crushing of the incompletely crushed malt and improving the crushing quality of the malt. The flipping plate 208 cleans the surface of the crushing rollers 102, preventing malt powder and impurities from accumulating on the surface of the crushing rollers 102 and improving the crushing efficiency of the crushing rollers 102. The rotation of the flipping plate 208 also stirs the crushed malt, improving the filtration efficiency of the filter screen 201.

[0029] Example 2 further optimizes the brewing malt grinding device provided in Example 1, specifically, as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a second filter screen 214 is installed inside the body 1, and the first filter screen 201 and the second filter screen 214 are compatible. When the malt that has not been completely crushed undergoes a secondary crushing, the crushed malt falls onto filter screen 214. Filter screens 201 and 214 have the same pore size. Filter screen 214 filters the secondary crushed malt. If there is still malt that is not completely crushed on the surface of filter screen 214, the sliding column 203 and filter screen 201 are reset. Filter screen 201 resets and pushes the malt that is not completely crushed onto the surface of the crushing roller 102. The motor 104 drives the crushing roller 102 to rotate. The crushing roller 102 crushes the incompletely crushed malt. This method ensures that the malt discharged from the hopper 103 is completely crushed. When the filter screen 1 201 and the filter screen 214 are completely overlapped, all the holes on the filter screen 1 201 and the filter screen 214 are completely overlapped. At this time, the malt particles passing through the holes of the filter screen 1 201 and the filter screen 214 are the largest. When the filter screen 1 201 is moved, the malt particles passing through the holes of the filter screen 1 201 and the filter screen 214 gradually decrease, thereby controlling the size of the crushed malt particles. Furthermore, a cylinder 215 is provided on the machine body 1, a synchronous shaft 216 is rotatably provided on the machine body 1, a connecting rod 217 is provided on the synchronous shaft 216, and a sliding column 203 is provided on the connecting rod 217. When the synchronous shaft 216 rotates, the synchronous shaft 216 drives the connecting rod 217 to rotate, and the connecting rod 217 drives the sliding column 203 to slide along the arc groove 202. Furthermore, a transmission plate 218 is provided at the output end of the cylinder 215. The transmission plate 218 is slidably mounted on the synchronous shaft 216. A spiral groove 219 is provided on the synchronous shaft 216. A pusher post 220 is provided on the transmission plate 218. The pusher post 220 is slidably mounted on the spiral groove 219. When the cylinder 215 drives the transmission plate 218 to move along the synchronous shaft 216, the pusher post 220 on the transmission plate 218 moves synchronously. The pusher post 220 slides along the spiral groove 219 and presses the spiral groove 219, causing the synchronous shaft 216 to rotate. Furthermore, a wedge block 221 is provided on the filter screen 201. The wedge block 221 is adapted to the flipping plate 208. When the filter screen 201 is displaced, the flipping plate 208 rotates and pushes the malt that has not been completely crushed. The wedge block 221 blocks the malt that has not been completely crushed, preventing the malt that has not been completely crushed from being pushed off the surface of the filter screen 201 by the flipping plate 208. Example 3: A method for pulverizing malt for brewing, comprising the following steps: Step S1: Place malt into the feed hopper 101. The malt enters the central area of ​​the two crushing rollers 102. The motor 104 drives the two crushing rollers 102 to rotate relative to each other. The relatively rotating crushing rollers 102 crush the malt. The crushed malt enters the surface of the filter screen 201. The crushing rollers 102 drive the transmission wheel 205 to rotate synchronously. The transmission wheel 205 drives the conveyor belt 206 to rotate synchronously. The conveyor belt 206 drives the drive shaft 204 to rotate synchronously together with the transmission wheel 205. The drive shaft 204 drives the triangular seat 207 and the flipping plate 208 to rotate synchronously. The flipping plate 208 stirs the malt that falls onto the surface of the filter screen 201. Step S2: Start cylinder 215. When cylinder 215 drives transmission plate 218 to move along synchronous shaft 216, push column 220 on transmission plate 218 moves synchronously. Push column 220 slides along spiral groove 219 and push column 220 squeezes spiral groove 219, causing synchronous shaft 216 to rotate. Synchronous shaft 216 drives connecting rod 217 to rotate. Connecting rod 217 drives sliding column 203 to slide along arc groove 202. When sliding column 203 moves to the other end of arc groove 202, filter screen 201 and sliding column 203 move synchronously. At this time, the malt that is not completely crushed on the surface of filter screen 201 falls back into the working area of ​​two pairs of crushing rollers 102, so that the malt that is not completely crushed is crushed a second time. In step S3, when the malt that has not been completely crushed is crushed a second time, the crushed malt falls onto filter screen 214. Filter screen 214 filters the crushed malt. If there is still malt that has not been completely crushed on the surface of filter screen 214, the cylinder 215 is reset at the output end, which in turn resets the sliding column 203 and filter screen 201. Filter screen 201 is reset and pushes the malt that has not been completely crushed onto the surface of crushing roller 102. The motor 104 drives the crushing roller 102 to rotate. The two pairs of crushing rollers 102 crush the malt that has not been completely crushed. This method ensures that the malt discharged from the hopper 103 is completely crushed. In step S4, when the two crushing rollers 102 rotate relative to each other, the elasticity of the torsion spring 211 causes the flipping plate 208 to be in close contact with the surface of the crushing rollers 102. At this time, the flipping plate 208 cleans the surface of the crushing rollers 102. When the crushing rollers 102 and the flipping plate 208 come into contact, the elasticity of the spring 213 causes the rectangular block 209, the adjusting shaft 210 and the flipping plate 208 to adaptively shift, so that the flipping plate 208 maintains uniform contact while cleaning the crushing rollers 102.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A malt crushing device for brewing, comprising a body, a feed hopper disposed on the body, a crushing roller rotatably disposed on the body, a discharge hopper disposed on the body, and a motor disposed on the body, characterized in that, It also includes a transfer mechanism disposed on the body; The transfer mechanism includes a filter screen rotatably disposed within the machine body, an arc-shaped groove disposed on the machine body, a sliding column slidably disposed on the arc-shaped groove, a drive shaft rotatably disposed on the machine body, transmission wheels disposed on the drive shaft and the crushing roller respectively, a conveyor belt disposed on the two transmission wheels, a triangular seat disposed on the drive shaft, and a flipping plate rotatably disposed on the triangular seat.

2. The malt grinding device for brewing according to claim 1, characterized in that, The motor output is connected to the crushing roller, and the sliding column is connected to the filter screen.

3. The malt crushing device for brewing according to claim 2, characterized in that, A rectangular block is provided on the triangular seat, and an adjusting shaft is rotatably provided on the rectangular block. The flipping plate is provided on the adjusting shaft, and the adjusting shaft and the rectangular block are connected by a torsion spring. The flipping plate is adapted to the crushing roller.

4. The malt crushing device for brewing according to claim 3, characterized in that, The triangular base is provided with a strip groove, the rectangular block is slidably disposed on the strip groove, and springs are provided on the corresponding surfaces of the strip groove and the rectangular block.

5. A malt grinding device for brewing according to claim 4, characterized in that, The flip plate is made of rubber.

6. A malt grinding device for brewing according to claim 5, characterized in that, The machine body is equipped with a second filter screen, which is compatible with the first filter screen and the second filter screen.

7. A malt grinding device for brewing according to claim 6, characterized in that, A cylinder is installed on the machine body, a synchronous shaft is rotatably mounted on the machine body, a connecting rod is mounted on the synchronous shaft, and a sliding column is mounted on the connecting rod.

8. A malt grinding device for brewing according to claim 6, characterized in that, The cylinder output end is provided with a transmission plate, which is slidably mounted on the synchronous shaft. The synchronous shaft is provided with a spiral groove, and the transmission plate is provided with a pusher column, which is slidably mounted on the spiral groove.

9. A malt grinding device for brewing according to claim 7, characterized in that, A wedge-shaped block is provided on the filter screen, and the wedge-shaped block is adapted to the flipping plate.

10. A method for grinding brewing malt, using a brewing malt grinding apparatus as described in claim 8, characterized in that, Includes the following steps: Step S1: Place the malt into the feed hopper. The malt enters the central area of ​​the two crushing rollers. The motor drives the two crushing rollers to rotate relative to each other. The relatively rotating crushing rollers crush the malt. The crushed malt enters the surface of the first filter screen. The crushing rollers drive the transmission wheel to rotate synchronously. The transmission wheel drives the conveyor belt to rotate synchronously. The conveyor belt drives the drive shaft and the transmission wheel to rotate synchronously. The drive shaft drives the triangular seat and the tilting plate to rotate synchronously. The tilting plate stirs the malt that falls onto the surface of the first filter screen. Step S2: Start the cylinder. When the cylinder drives the transmission plate to move along the synchronous shaft, the push column on the transmission plate moves synchronously. The push column slides along the spiral groove and squeezes the spiral groove, causing the synchronous shaft to rotate. The synchronous shaft drives the connecting rod to rotate, and the connecting rod drives the sliding column to slide along the arc groove. When the sliding column moves to the other end of the arc groove, the filter screen and the sliding column move synchronously. At this time, the malt on the surface of the filter screen that has not been completely crushed falls back into the working area of ​​the two pairs of crushing rollers, so that the malt that has not been completely crushed is crushed a second time. In step S3, when the malt that has not been completely crushed is crushed a second time, the crushed malt falls onto filter screen two. Filter screen two filters the crushed malt. If there is still malt that has not been completely crushed on the surface of filter screen two, the cylinder output end is reset, which in turn resets the sliding column and filter screen one. Filter screen one is reset and pushes the malt that has not been completely crushed onto the surface of the crushing roller. The motor drives the crushing roller to rotate, and the two pairs of crushing rollers crush the malt that has not been completely crushed. This method ensures that the malt discharged from the hopper is completely crushed. In step S4, when the two crushing rollers rotate relative to each other, the elasticity of the torsion spring causes the flipping plate to press tightly against the surface of the crushing rollers. At this time, the flipping plate cleans the surface of the crushing rollers. When the crushing rollers and the flipping plate come into contact, the elasticity of the spring causes the rectangular block, the adjusting shaft and the flipping plate to self-adaptively move, so that the flipping plate maintains uniform contact while cleaning the crushing rollers.

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