A sheller for grain production

Abstract

The utility model discloses a kind of for grain production's shell throwing machine, belong to grain production field.A kind of for grain production's shell throwing machine, including support, fixed with mounting cover on support, setting up feed inlet on mounting cover, setting up adjusting assembly on feed inlet, setting up fixed plate on adjusting assembly, slidingly connected with slide bar on feed inlet, fixed with pressing plate on slide bar, two guide rods are installed on pressing plate, reset spring is sleeved on the outside of guide rod, a group of bearing seats are fixed on mounting cover, rotationally connected with shaft on bearing seat, cam is fixed on the outside of shaft.The utility model solves the problem that existing grain shell throwing machine lacks pre-extrusion structure, and the problem that shelling efficiency is not high, the utility model is by setting up extrusion structure in feed inlet position and the linkage of shell throwing machine transmission structure, grain can be subjected to uniform mechanical extrusion effect before entering shelling link, make shell produce preliminary crack or looseness, can significantly improve shelling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of grain production, specifically a hulling machine for grain production. Background Technology

[0002] A grain hulling machine is a high-efficiency cleaning device used in grain processing. It is mainly used to separate grains (such as wheat and rice) from hulls, chaff, and other impurities. Its working principle is to separate the light hull from the grains through vibrating screens, airflow separation, or centrifugal force, thereby improving the purity of the grain. It is commonly used in rice milling and threshing processes. It features high automation, large processing capacity, energy saving, and environmental protection, and can significantly improve the efficiency and quality of grain processing. Some models can also adjust the wind speed and screen density to adapt to the needs of different grains. It is widely used in farms, grain depots, and food processing plants and is one of the important machines in modern grain production.

[0003] Existing grain hulling machines primarily rely on high-speed rotating striking rods to beat the grain, breaking the outer shell and separating it from the kernel. However, this design lacks a pre-compression structure, resulting in incomplete shell breakage. Some grains require multiple blows to be hulled, reducing overall hulling efficiency. Furthermore, due to the lack of pre-compression, some outer shells remain tightly adhered to the kernel surface, affecting subsequent sorting and increasing energy consumption and processing time. In addition, relying solely on impact force for hulling may increase kernel breakage rate, affecting the quality of the finished product.

[0004] In summary, in order to improve the dehulling efficiency of the hulling machine and reduce the grain breakage rate, it is necessary to solve the problem of the lack of a pre-extrusion structure in the existing equipment, so that the grain can undergo uniform extrusion pretreatment before entering the high-speed impact, thereby achieving more efficient and complete separation of the outer shell and the kernel. Utility Model Content

[0005] The purpose of this invention is to provide a grain hulling machine. By setting an extrusion structure linked to the transmission structure of the hulling machine at the feed inlet, the machine can extrude the outer shell of the grain before it enters the hulling stage, thereby achieving the function of pre-crushing and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hulling machine for grain production, comprising a support frame, a mounting cover fixed on the support frame, a feed inlet on the mounting cover, an adjusting component on the feed inlet, a fixed plate on the adjusting component, a sliding rod slidably connected to the feed inlet, a pressure plate fixed on the sliding rod, two guide rods mounted on the pressure plate, a return spring sleeved on the outer side of the guide rods, a set of bearing seats fixed on the mounting cover, a rotating shaft rotatably connected to the bearing seats, a cam fixed on the outer side of the rotating shaft, the outer surface of the cam fitting against the end of the sliding rod, a hulling mechanism and an air separation mechanism inside the mounting cover, and a screening component on the support frame.

[0007] Preferably, the adjustment assembly includes a lead screw rotatably connected to the fixed plate, a knob fixed to the end of the lead screw, and two limiting rods mounted on the fixed plate, the limiting rods passing through the side wall of the feed inlet and slidably connected thereto.

[0008] Preferably, the hulling mechanism includes a hulling component and a drive component mounted on a mounting cover. The hulling component is used to hull the grains, and the drive component is used to drive the hulling component to rotate.

[0009] Preferably, the peeling assembly includes a fixed cylinder fixed inside the mounting cover, two guide plates mounted on the top of the fixed cylinder, a screen cylinder disposed inside the fixed cylinder, multiple fixed seats fixed on the screen cylinder, and a striking roller rotatably connected to the fixed cylinder. The guide plates are fixedly connected to the mounting cover through the fixed seats, and the top of the guide plates is connected to the bottom of the feed inlet.

[0010] Preferably, the drive assembly includes a first synchronous disc fixed to the end of the striking roller, a drive motor fixed to the bottom of the mounting cover, a second synchronous disc fixed to the output end of the drive motor, and a first synchronous belt sleeved on the outside of the first and second synchronous discs. The drive motor is used to drive the second synchronous disc to rotate.

[0011] Preferably, the air separation mechanism includes a blowing component and a linkage component, wherein the blowing component is used to generate airflow, and the linkage component is used to drive the blowing component and the rotating shaft to rotate.

[0012] Preferably, the blower assembly includes a collector shroud fixed inside the mounting cover, a rotating rod rotatably connected to the collector shroud, and multiple fan blades fixed to the outside of the rotating rod, the multiple fan blades being circumferentially distributed around the axis of the rotating rod.

[0013] Preferably, the linkage assembly includes a third synchronous disc fixed on the rotating rod, a fourth synchronous disc fixed on the striking roller, a second synchronous belt sleeved on the outside of the third and fourth synchronous discs, a fifth synchronous disc fixed on the rotating rod, a sixth synchronous disc fixed on the rotating shaft, and a third synchronous belt sleeved on the outside of the fifth and sixth synchronous discs. The third and fourth synchronous discs rotate in linkage via the second synchronous belt, and the fifth and sixth synchronous discs rotate in linkage via the third synchronous belt.

[0014] Preferably, the screening assembly includes multiple spring connecting seats fixed on the support, a material dropping frame fixed on the spring connecting seats, a receiving tray fixed on the material dropping frame, and a screen plate fixed on the receiving tray. The top of the material dropping frame is an open structure, and the material dropping frame is driven to vibrate by an external vibration motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention features a compression structure linked to the hulling machine's transmission structure at the feed inlet. This allows the grain to be subjected to uniform mechanical compression before entering the hulling stage, causing initial cracks or loosening of the outer shell. This reduces the difficulty of subsequent high-speed impacts. This pre-crushing process significantly improves hulling efficiency, reduces the number of repeated impacts, lowers energy consumption and processing time. Furthermore, because the outer shell is partially removed during the compression stage, the impact force on the grain during subsequent hulling is more uniform, effectively reducing the breakage rate, improving the integrity of the finished product, and enabling the equipment to adapt to the processing needs of a wider variety of grains. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the pressure plate of this utility model;

[0019] Figure 3 This is a rear-view three-dimensional structural diagram of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the fixed cylinder of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the sieve cylinder of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the screening component of this utility model.

[0023] In the diagram: 1. Bracket; 2. Mounting cover; 3. Feed inlet; 41. Lead screw; 42. Knob; 43. Limiting rod; 5. Fixing plate; 6. Slide rod; 7. Pressure plate; 8. Guide rod; 9. Return spring; 10. Bearing seat; 11. Rotating shaft; 12. Cam; 131. Fixing cylinder; 132. Guide plate; 133. Screen cylinder; 134. Fixing seat; 135. Striking roller; 136. First synchronous disc; 137. Drive motor; 138. Second synchronous disc; 139. First synchronous belt; 141. Flow collector; 142. Rotating rod; 143. Fan blade; 144. Third synchronous disc; 145. Fourth synchronous disc; 146. Second synchronous belt; 147. Fifth synchronous disc; 148. Sixth synchronous disc; 149. Third synchronous belt; 151. Spring connecting seat; 152. Receiving tray; 153. Screen plate; 154. Drop frame. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] Refer to the instruction manual appendix Figures 1 to 6 A grain hulling machine includes a support 1, a mounting cover 2 fixed on the support 1, a feed inlet 3 on the mounting cover 2, an adjusting component on the feed inlet 3, a fixing plate 5 on the adjusting component, a sliding rod 6 slidably connected to the feed inlet 3, a pressure plate 7 fixed on the sliding rod 6, two guide rods 8 mounted on the pressure plate 7, a return spring 9 sleeved on the outer side of the guide rods 8, a set of bearing seats 10 fixed on the mounting cover 2, a rotating shaft 11 rotatably connected to the bearing seats 10, a cam 12 fixed on the outer side of the rotating shaft 11, the outer surface of the cam 12 fitting against the end of the sliding rod 6, a hulling mechanism and an air separation mechanism inside the mounting cover 2, and a screening component on the support 1.

[0026] It should be noted that rubber flexible connections are provided on both the pressure plate 7 and the fixed plate 5, which are connected to the side wall of the feed inlet 3 to ensure that the grains can fall between the pressure plate 7 and the fixed plate 5. When the grains enter from the feed inlet 3, the rotating shaft 11 drives the cam 12 to rotate. The cam 12 periodically pushes the end of the slide rod 6, overcoming the resistance of the return spring 9, so that the slide rod 6 drives the pressure plate 7 to move into the feed inlet 3 to squeeze the grains. When the cam 12 rotates away from the slide rod 6 at its highest point, the slide rod 6 and the pressure plate 7 retract and reset under the action of the return spring 9. The pressure plate 7 moves back and forth in this way, forming a pre-compression on the grains that pass through, causing the outer shell to produce initial cracks or loosening, creating conditions for subsequent efficient hulling.

[0027] Refer to the instruction manual appendix Figure 1 and Figure 2 The adjustment assembly includes a lead screw 41 rotatably connected to the fixed plate 5, a knob 42 fixed to the end of the lead screw 41, and two limiting rods 43 mounted on the fixed plate 5. The limiting rods 43 pass through the side wall of the feed port 3 and are slidably connected to it.

[0028] It should be noted that by rotating the screw 41 by the knob 42, the feed port 3 is driven to slide relative to the fixed plate 5 along the direction of the limiting rod 43, thereby changing the distance between the fixed plate 5 and the pressure plate 7 to accommodate grains of different sizes.

[0029] Refer to the instruction manual appendix Figures 3 to 5 The hulling mechanism includes a hulling component and a drive component mounted on the mounting cover 2. The hulling component is used to hull the grains, and the drive component is used to drive the hulling component to rotate.

[0030] It should be noted that the peeling component applies mechanical force to the grain to completely remove the husk, and the drive component provides the rotational power required for the peeling component to work.

[0031] Refer to the instruction manual appendix Figures 3 to 5 The peeling assembly includes a fixed cylinder 131 fixed inside the mounting cover 2, two guide plates 132 mounted on the top of the fixed cylinder 131, a screen cylinder 133 disposed inside the fixed cylinder 131, multiple fixed seats 134 fixed on the screen cylinder 133, and a striking roller 135 rotatably connected to the fixed cylinder 131. The guide plates 132 are fixedly connected to the mounting cover 2 through the fixed seats 134, and the top of the guide plates 132 is connected to the bottom of the feed inlet 3.

[0032] It should be noted that the guide plate 132 guides the grain falling from the feed inlet 3 to the working area between the screen cylinder 133 and the striking roller 135. The high-speed rotating striking roller 135 strikes the grain, further breaking the pre-compressed outer shell and separating it from the grain. The separated mixture (grain, broken shell, and impurities) falls through the holes of the screen cylinder 133. The operator can replace the screen cylinder 133 with different hole diameters according to actual needs.

[0033] Refer to the instruction manual appendix Figures 3 to 5 The drive assembly includes a first synchronous disc 136 fixed to the end of the striking roller 135, a drive motor 137 fixed to the bottom of the mounting cover 2, a second synchronous disc 138 fixed to the output end of the drive motor 137, and a first synchronous belt 139 sleeved on the outside of the first synchronous disc and the second synchronous disc 138. The drive motor 137 is used to drive the second synchronous disc 138 to rotate.

[0034] It should be noted that the drive motor 137 drives the second synchronous disk 138 to rotate, and then the power is transmitted to the first synchronous disk 136 via the first synchronous belt 139, thereby driving the striking roller 135 to rotate at high speed in the fixed cylinder 131 to complete the shelling operation.

[0035] Refer to the instruction manual appendix Figures 3 to 5The air separation mechanism includes a blowing component and a linkage component. The blowing component is used to generate airflow, and the linkage component is used to drive the blowing component and the rotating shaft 11 to rotate.

[0036] It should be noted that the blowing assembly uses airflow to perform air separation on the dehulled mixture, separating lighter impurities such as broken shells and chaff from heavier grains. The linkage assembly transmits power to the blowing assembly to generate airflow, and simultaneously drives the rotating shaft 11 of the pre-compression component.

[0037] Refer to the instruction manual appendix Figures 3 to 5 The blower assembly includes a collector shroud 141 fixed inside the mounting cover 2, a rotating rod 142 rotatably connected to the collector shroud 141, and multiple fan blades 143 fixed to the outside of the rotating rod 142. The multiple fan blades 143 are circumferentially distributed around the axis of the rotating rod 142.

[0038] It should be noted that when the rotating rod 142 drives the fan blade 143 to rotate at high speed, it generates directional airflow. The function of the flow collecting hood 141 is to guide and gather the airflow, enhance the wind force, and make it act on the mixture falling after hulling, so as to achieve effective separation of light impurities and grains.

[0039] Refer to the instruction manual appendix Figures 3 to 5 The linkage assembly includes a third synchronous disc 144 fixed on the rotating rod 142, a fourth synchronous disc 145 fixed on the striking roller 135, a second synchronous belt 146 sleeved on the outside of the third synchronous disc 144 and the fourth synchronous disc 145, a fifth synchronous disc 147 fixed on the rotating rod 142, a sixth synchronous disc 148 fixed on the rotating shaft 11, and a third synchronous belt 149 sleeved on the outside of the fifth synchronous disc 147 and the sixth synchronous disc 148. The third synchronous disc 144 and the fourth synchronous disc 145 rotate in linkage through the second synchronous belt 146, and the fifth synchronous disc 147 and the sixth synchronous disc 148 rotate in linkage through the third synchronous belt 149.

[0040] It should be noted that the rotational power of the striking roller 135 (fourth synchronous disk 145) is transmitted to the rotating rod 142 (third synchronous disk 144) of the air classifier blade 143 via the second synchronous belt 146. At the same time, the rotational power of the rotating rod 142 (fifth synchronous disk 147) is further transmitted to the rotating shaft 11 (sixth synchronous disk 148) via the third synchronous belt 149, thereby realizing the synchronous driving of the three key actions of shelling, air classification and pre-extrusion by a single drive motor 137.

[0041] Refer to the instruction manual appendix Figure 4 and Figure 6The screening assembly includes multiple spring connecting seats 151 fixed on the support 1, a material drop frame 154 fixed on the spring connecting seats 151, a receiving tray 152 fixed on the material drop frame 154, and a screen plate 153 fixed on the receiving tray 152. The top of the material drop frame 154 is an open structure, and the material drop frame 154 is driven to vibrate by an external vibration motor.

[0042] It should be noted that the material feeding frame 154 vibrates through the spring connecting seat 151 under the action of the vibrating motor, which drives the receiving plate 152 and the screen plate 153 on it to vibrate together. The vibration causes the grains to be further screened on the screen plate 153. Small impurities or fragments fall through the screen holes, while clean grains remain on the screen plate 153 or are collected along a specific path to complete the final cleaning.

[0043] Working principle: Grains fall into the feed inlet 3. The gap between the fixed plate 5 and the pressure plate 7 is adjusted by the screw 41 and the knob 42 to accommodate different particle sizes. The rotating shaft 11 periodically pushes the slide rod 6 through the cam 12, causing the pressure plate 7 to move into the feed inlet 3 against the resistance of the return spring 9, forming a pre-compression on the passing grains. When the cam 12 rotates away from its highest point, the return spring 9 pulls the slide rod 6 and the pressure plate 7 back to their original positions. The pre-compressed grains enter the screen cylinder 133 and the striking roller 135 along the guide plate 132. The drive motor 137 drives the first synchronous disc 136 through the second synchronous disc 138 and the first synchronous belt 139, driving the striking roller 135 to rotate at high speed and strike the grains, causing the outer... The shells and grains are separated, and the shelled mixture falls through the sieve cylinder 133. At the same time, the fourth synchronous disc 145 of the striking roller 135 drives the third synchronous disc 144 to rotate via the second synchronous belt 146. This causes the fan blades 143 on the rotating rod 142 to generate airflow in the collecting hood 141, blowing the broken shells and chaff away from the grains. The fifth synchronous disc 147 of the rotating rod 142 drives the sixth synchronous disc 148 via the third synchronous belt 149, which drives the rotating shaft 11 and the cam 12 to operate synchronously, ensuring that the pre-extrusion and dehulling work together. Finally, the mixture falls into the discharge frame 154 driven by the vibrating motor. The spring connecting seat 151 causes the receiving plate 152 and the sieve plate 153 to vibrate. The clean grains after screening are collected, and the debris is discharged from the sieve holes.

[0044] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, this utility model will not explain the control method and circuit connection in detail. In this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A hulling machine for grain production, comprising a support frame (1), characterized in that, A mounting cover (2) is fixed on the bracket (1). A feed inlet (3) is provided on the mounting cover (2). An adjustment component is provided on the feed inlet (3). A fixing plate (5) is provided on the adjustment component. A slide rod (6) is slidably connected to the feed inlet (3). A pressure plate (7) is fixed on the slide rod (6). Two guide rods (8) are installed on the pressure plate (7). A reset spring (9) is sleeved on the outside of the guide rod (8). A set of bearing seats (10) is fixed on the mounting cover (2). A rotating shaft (11) is rotatably connected to the bearing seat (10). A cam (12) is fixed on the outside of the rotating shaft (11). The outer surface of the cam (12) is in contact with the end of the slide rod (6). A shelling mechanism and an air separation mechanism are provided inside the mounting cover (2). A screening component is provided on the bracket (1).

2. A grain hulling machine according to claim 1, characterized in that, The adjustment assembly includes a lead screw (41) rotatably connected to a fixed plate (5), a knob (42) fixed to the end of the lead screw (41), and two limit rods (43) mounted on the fixed plate (5). The limit rods (43) pass through the side wall of the feed inlet (3) and are slidably connected to it.

3. A grain hulling machine according to claim 1, characterized in that, The hulling mechanism includes a hulling component and a drive component mounted on the mounting cover (2). The hulling component is used to hull the grains, and the drive component is used to drive the hulling component to rotate.

4. A grain hulling machine according to claim 3, characterized in that, The peeling assembly includes a fixed cylinder (131) fixed inside the mounting cover (2), two guide plates (132) mounted on the top of the fixed cylinder (131), a screen cylinder (133) set inside the fixed cylinder (131), multiple fixed seats (134) fixed on the screen cylinder (133), and a striking roller (135) rotatably connected to the fixed cylinder (131). The guide plates (132) are fixedly connected to the mounting cover (2) through the fixed seats (134), and the top of the guide plates (132) is connected to the bottom of the feed inlet (3).

5. A grain hulling machine according to claim 4, characterized in that, The drive assembly includes a first timing disc (136) fixed to the end of the striking roller (135), a drive motor (137) fixed to the bottom of the mounting cover (2), a second timing disc (138) fixed to the output end of the drive motor (137), and a first timing belt (139) sleeved on the outside of the first timing disc (136) and the second timing disc (138). The drive motor (137) is used to drive the second timing disc (138) to rotate.

6. A grain hulling machine according to claim 5, characterized in that, The air separation mechanism includes a blowing component and a linkage component. The blowing component is used to generate airflow, and the linkage component is used to drive the blowing component and the rotating shaft (11) to rotate.

7. A grain hulling machine according to claim 6, characterized in that, The blower assembly includes a collector shroud (141) fixed inside the mounting cover (2), a rotating rod (142) rotatably connected to the collector shroud (141), and multiple fan blades (143) fixed outside the rotating rod (142). The multiple fan blades (143) are circumferentially distributed around the axis of the rotating rod (142).

8. A grain hulling machine according to claim 7, characterized in that, The linkage assembly includes a third synchronous disc (144) fixed on the rotating rod (142), a fourth synchronous disc (145) fixed on the striking roller (135), a second synchronous belt (146) sleeved on the outside of the third synchronous disc (144) and the fourth synchronous disc (145), a fifth synchronous disc (147) fixed on the rotating rod (142), a sixth synchronous disc (148) fixed on the rotating shaft (11), and a third synchronous belt (149) sleeved on the outside of the fifth synchronous disc (147) and the sixth synchronous disc (148). The third synchronous disc (144) and the fourth synchronous disc (145) rotate in linkage through the second synchronous belt (146), and the fifth synchronous disc (147) and the sixth synchronous disc (148) rotate in linkage through the third synchronous belt (149).

9. A grain hulling machine according to claim 1, characterized in that, The screening assembly includes multiple spring connecting seats (151) fixed on the support (1), a dropping frame (154) fixed on the spring connecting seat (151), a receiving tray (152) fixed on the dropping frame (154), and a screen plate (153) fixed on the receiving tray (152). The top of the dropping frame (154) is an open structure, and the dropping frame (154) is driven to vibrate by an external vibration motor.

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