Wheat crushing device for wheat flour production
The automated design of the pre-grinding, screening, and reflux devices solves the problem of incomplete wheat grinding, achieving efficient grinding and screening, improving flour fineness and production efficiency, and reducing labor consumption.
Patent Information
- Application Number
- CN202520312279.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing wheat crushing equipment requires manual sieving and repeated crushing when the wheat is not completely crushed, resulting in low production efficiency and wasted manpower.
A wheat grinding device was designed, comprising a pre-grinding mechanism, a screening mechanism, and a reflux device. Through the automatic and seamless connection of the pre-grinding, screening, and reflux processes, multiple grinding and fine screening of wheat are achieved, thereby automatically improving the grinding quality and efficiency.
It improved the quality of wheat grinding, increased the fineness of flour, reduced labor costs, and improved production efficiency.
Smart Images
Figure CN223931511U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of crushing devices, specifically relating to a wheat crushing device for wheat flour production. Background Technology
[0002] In the processing of wheat flour, crushing equipment, such as flour mills, is needed to crush and grind the wheat, turning the wheat grains into powder.
[0003] In existing technologies, when using equipment such as flour mills to grind wheat, incomplete grinding often results in some unground particles being discharged from the equipment's outlet along with the wheat flour. This necessitates subsequent screening, and the unground particles must be re-ground. These screening tasks and material transfers between equipment require additional manpower, which reduces production efficiency and consumes more manpower. Utility Model Content
[0004] To address the above problems, the purpose of this utility model is to provide a wheat grinding device for wheat flour production, which can effectively improve the grinding quality of wheat and the fineness of flour. Through the automatic and seamless connection of multiple processes such as sieving, reflux, and re-grinding, it effectively improves production efficiency and reduces labor costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wheat pulverizing device for wheat flour production, comprising a pulverizing mechanism, the bottom of which is connected to a screening mechanism via a pipe, the screening mechanism comprising a screening box shell, a spring damper installed on the inner side of the screening box shell, a second motor installed on the side of the screening box shell, the output end of the second motor connected to an eccentric wheel, the top of the spring damper connected to a screen mounting box, a screen screwed onto the inner side of the screen mounting box, a flour output port penetrating the bottom of the screening box shell, a large particle output port penetrating the side of the screening box shell, one end of the large particle output port connected to a return device, the return device comprising a large particle receiving box, a lifting pipe connected to one side of the large particle receiving box, a spiral conveying shaft rotatably installed on the inner side of the lifting pipe, a third motor installed on the top of the lifting pipe, a return pipe connected to the side of the spiral conveying shaft, and a pre-grinding mechanism above the pulverizing mechanism.
[0006] The beneficial effects of this utility model are as follows: This device is equipped with a pre-grinding mechanism. After the material is fed in, the wheat in the pre-grinding chamber that has not yet entered the conveying pipe can be stirred to make the wheat rub against each other first. In the time before it enters the crusher shell through the conveying pipe, it is pre-grinded, so that when it enters the crusher shell for grinding and crushing, it can be crushed faster.
[0007] This device is equipped with a screening mechanism and a reflux device. Through layers of screening by vibrating screens, the fine flour is finally discharged through the flour outlet, while larger particles in the flour are intercepted by the screens and slide towards the large particle outlet as the screens vibrate, entering the large particle receiving box. A third motor drives the screw conveyor shaft to rotate, which lifts the particles in the large particle receiving box upward through the lifting pipe and then conveys them into the conveying pipe through the reflux pipe, so that they re-enter the crusher shell for further grinding. By screening and automatically returning the unground wheat particles for secondary grinding, the crushing quality of wheat can be effectively improved, and the fineness of the flour can be increased. Through the automatic and seamless connection of multiple processes such as screening, reflux, and re-grinding, production efficiency is effectively improved and labor costs are reduced.
[0008] In order to grind wheat:
[0009] As a further improvement to the above technical solution: the crushing mechanism includes a crusher housing, a first motor is installed on the side of the crusher housing, the output end of the first motor is connected to a first rotating shaft, one end of the first rotating shaft is connected to a grinding disc, one side of the grinding disc is provided with inner and outer crushing blades, an inner grinding ring and an outer grinding ring are installed on the inner side of the crusher housing, a first discharge port and a second discharge port are respectively provided between the inner and outer sides of the inner grinding ring and between the inner and outer sides of the outer grinding ring, crushing teeth are provided on the inner side of both the inner and outer grinding rings, and a filter screen is provided on the outer side of the second discharge port.
[0010] The beneficial effects of this improvement are as follows: After wheat is successively fed into the crusher shell through the conveying pipe, it first enters the inner grinding ring. The crushing blades located inside the inner grinding ring cooperate with the crushing teeth on the inner wall of the inner grinding ring to perform the first crushing process. Then, the wheat that has been crushed for the first time enters the inner grinding ring through the first discharge port on the inner grinding ring. The crushing blades located inside the outer grinding ring cooperate with the crushing teeth on the inner wall of the outer grinding ring to perform a second crushing process, completing the wheat crushing work. The filter screen can block the wheat particles that have not been crushed, allowing them to remain inside the crusher shell for further crushing, while the crushed flour can fall through the mesh of the filter screen into the screen installation box.
[0011] To ensure that the feeding and discharging of the screening mechanism are not affected by the vibration of the screen mounting box:
[0012] As a further improvement to the above technical solution: corrugated pipes are connected between the bottom of the screen installation box and the flour output port, between the side of the screen installation box and the large particle output port, and between the top of the screen installation box and the pipe at the bottom of the crusher shell.
[0013] The beneficial effects of this improvement are: the corrugated pipe can adapt to the vibration of the screen mounting box, so that the screen mounting box can normally receive the material from the crushing mechanism and discharge the material through the flour output port and the large particle output port.
[0014] To allow larger particles of flour to be fed into the large particle receiving box:
[0015] As a further improvement to the above technical solution: the screen is installed at an angle toward the large particle output port.
[0016] The beneficial effects of this improvement are as follows: the screen is installed at an angle toward the large particle output port, so that larger particles in the flour are intercepted by the screen and can slide toward the large particle output port with the vibration of the screen and enter the large particle receiving box.
[0017] To pre-mill the wheat before it enters the grinding mechanism:
[0018] As a further improvement to the above technical solution: the pre-grinding mechanism includes a pre-grinding chamber, a feed hopper at the top of the pre-grinding chamber, a gear receiving chamber installed on the side of the pre-grinding chamber, a first gear and a second gear rotatably mounted on the inner side of the gear receiving chamber, a fourth motor installed on the side of the gear receiving chamber, the output end of the fourth motor connected to the first gear, the first gear and the second gear respectively connected to a second rotating shaft, a connecting rod installed on the outer side of the second rotating shaft, a tilting plate installed on the inner side and end of the connecting rod, a conveying pipe connected to the bottom of the pre-grinding chamber, the other end of the conveying pipe connected to the side of the crusher shell, and one side of the middle section of the conveying pipe connected to a return pipe.
[0019] The beneficial effects of this improvement are as follows: When this device is in use, wheat is fed into the pre-grinding chamber from the feed hopper. The first gear is driven to rotate by the fourth motor. Through the meshing transmission between the first gear and the second gear, the second rotating shaft connected by the first gear and the second gear rotates in opposite directions, thereby driving the connecting rod and the tilting plate to rotate. The rotation of the connecting rod and the tilting plate moves the wheat in the pre-grinding chamber that has not yet entered the conveying pipe, causing friction between the wheat first. Before entering the crusher shell through the conveying pipe, the wheat is pre-grinded, so that the crushing can be completed more quickly when it enters the crusher shell for grinding.
[0020] In order to move the two second rotating shafts to drive the tilting plates to rotate in opposite directions:
[0021] As a further improvement to the above technical solution: the first gear and the second gear mesh with each other.
[0022] The beneficial effects of this improvement are as follows: when the first gear is driven by the fourth motor, it can drive the second gear to rotate in the opposite direction, thereby driving the two second rotating shafts to rotate the turning plates in opposite directions, and turning and pre-grinding the wheat located in the pre-grinding chamber.
[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0025] Figure 2 This is a cross-sectional schematic diagram of the crushing mechanism in this utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the inner grinding ring and the outer grinding ring in this utility model;
[0027] Figure 4 This is a schematic diagram of the installation of the grinding disc in this utility model;
[0028] Figure 5 This is a cross-sectional schematic diagram of the screening mechanism and reflux device in this utility model;
[0029] Figure 6 This is a schematic diagram of the interior of the screening box shell in this utility model;
[0030] Figure 7 This is a side sectional view of the pre-grinding structure in this utility model;
[0031] Figure 8 This is a cross-sectional schematic diagram of the pre-grinding mechanism in this utility model;
[0032] Figure 9 This is a schematic diagram of the flip plate in this utility model.
[0033] In the diagram: 1. Crushing mechanism; 101. Crusher housing; 102. First motor; 103. First rotating shaft; 104. Grinding disc; 105. Crushing blade plate; 106. Inner grinding ring; 107. First discharge port; 108. Outer grinding ring; 109. Second discharge port; 110. Crushing teeth; 111. Filter screen; 2. Screening mechanism; 201. Screening box housing; 202. Spring damper; 203. Second motor; 204. Eccentric wheel; 205. Screen mounting box; 206. Screen; 207. 1. Flour output port; 208. Large particle output port; 209. Corrugated pipe; 3. Return device; 301. Large particle receiving box; 302. Lifting pipe; 303. Screw conveyor shaft; 304. Third motor; 305. Return pipe; 4. Pre-grinding mechanism; 401. Pre-grinding bin; 402. Feed hopper; 403. Gear receiving bin; 404. Fourth motor; 405. First gear; 406. Second gear; 407. Second rotating shaft; 408. Connecting rod; 409. Tilting plate; 410. Conveying pipe. Detailed Implementation
[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.
[0035] like Figure 1-9 As shown, a wheat pulverizing device for wheat flour production includes a pulverizing mechanism 1. The bottom of the pulverizing mechanism 1 is connected to a screening mechanism 2 via a pipe. The screening mechanism 2 includes a screening box shell 201. A spring damper 202 is installed inside the screening box shell 201. A second motor 203 is installed on the side of the screening box shell 201. The output end of the second motor 203 is connected to an eccentric wheel 204. The top end of the spring damper 202 is connected to a screen mounting box 205. A screen 206 is screwed onto the inner side of the screen mounting box 205. The screening box shell 201... The bottom of the sieve box 201 is provided with a flour output port 207. The side of the sieve box shell 201 is provided with a large particle output port 208. One end of the large particle output port 208 is connected to the return device 3. The return device 3 includes a large particle receiving box 301. A lifting pipe 302 is connected to one side of the large particle receiving box 301. A screw conveyor shaft 303 is rotatably installed on the inner side of the lifting pipe 302. A third motor 304 is installed on the top of the lifting pipe 302. A return pipe 305 is connected to the side of the screw conveyor shaft 303. A pre-grinding mechanism 4 is provided above the crushing mechanism 1.
[0036] This device is equipped with a pre-grinding mechanism. After the material is fed in, the wheat in the pre-grinding chamber 401 that has not yet entered the conveying pipe 410 can be moved to make the wheat rub against each other first. In the time before the wheat enters the crusher shell 101 through the conveying pipe 410, it is pre-grinded, so that it can be crushed faster when it enters the crusher shell 101 for grinding.
[0037] This device is equipped with a screening mechanism and a reflux device. Through the vibrating screen 206, the fine flour is finally discharged through the flour output port 207, while the larger particles in the flour are intercepted by the screen 206 and slide towards the large particle output port 208 as the screen 206 vibrates, and enter the large particle receiving box 301. The screw conveyor shaft 303 is driven by the third motor 304 to rotate. The screw conveyor shaft 303 lifts the particles in the large particle receiving box 301 upward through the lifting pipe 302 and conveys them into the conveying pipe 410 through the reflux pipe 305, so that they re-enter the crusher shell 101 for further grinding. By screening and automatically returning the unground wheat particles for secondary grinding, the grinding quality of wheat can be effectively improved and the fineness of the flour can be improved.
[0038] The crushing mechanism 1 includes a crusher housing 101. A first motor 102 is installed on the side of the crusher housing 101. The output end of the first motor 102 is connected to a first rotating shaft 103. One end of the first rotating shaft 103 is connected to a grinding disc 104. Two crushing blades 105 are provided on one side of the grinding disc 104. An inner grinding ring 106 and an outer grinding ring 108 are installed on the inner side of the crusher housing 101. A first discharge port 107 and a second discharge port 109 are respectively provided between the inner and outer sides of the inner grinding ring 106 and between the inner and outer sides of the outer grinding ring 108. Crushing teeth 110 are provided on the inner sides of both the inner grinding ring 106 and the outer grinding ring 108. A filter screen 111 is provided on the outer side of the second discharge port 109.
[0039] After wheat is fed into the crusher housing 101 through the conveying pipe 410, it first enters the inner grinding ring 106. The crushing blades 105 located inside the inner grinding ring 106 cooperate with the crushing teeth 110 on the inner wall of the inner grinding ring 106 to perform the first crushing process. Then, the wheat that has been crushed for the first time enters the inner side of the outer grinding ring 108 through the first discharge port 107 on the inner grinding ring 106. The crushing blades 105 located inside the outer grinding ring 108 cooperate with the crushing teeth 110 on the inner wall of the outer grinding ring 108 to perform a second crushing process, completing the wheat crushing work. The filter screen 111 can block the wheat particles that have not been crushed, so that they remain inside the crusher housing 101 to continue to be crushed, while the crushed flour can fall through the mesh of the filter screen 111 and fall into the screen installation box 205.
[0040] Corrugated pipes 209 are connected between the bottom of the screen mounting box 205 and the flour output port 207, between the side of the screen mounting box 205 and the large particle output port 208, and between the top of the screen mounting box 205 and the pipe at the bottom of the crusher housing 101.
[0041] The corrugated pipe 209 is designed to accommodate the vibration of the screen mounting box 205, so that the screen mounting box 205 can normally receive the material from the crushing mechanism 1 and discharge the material through the flour output port 207 and the large particle output port 208.
[0042] The screen 206 is installed at an angle toward the large particle output port 208.
[0043] The sieve 206 is installed at an angle toward the large particle output port 208. Larger particles in the flour are intercepted by the sieve 206 and can slide toward the large particle output port 208 with the vibration of the sieve 206 and enter the large particle receiving box 301.
[0044] The pre-grinding mechanism 4 includes a pre-grinding chamber 401, a feed hopper 402 at the top of the pre-grinding chamber 401, a gear receiving chamber 403 on the side of the pre-grinding chamber 401, a first gear 405 and a second gear 406 rotatably mounted on the inner side of the gear receiving chamber 403, a fourth motor 404 on the side of the gear receiving chamber 403, the output end of the fourth motor 404 being connected to the first gear 405, the first gear 405 and the second gear 406 being respectively connected to a second rotating shaft 407, a connecting rod 408 on the outer side of the second rotating shaft 407, a tilting plate 409 on the inner side and end of the connecting rod 408, a conveying pipe 410 connected to the bottom of the pre-grinding chamber 401, the other end of the conveying pipe 410 being connected to the side of the crusher housing 101, and one side of the middle section of the conveying pipe 410 being connected to the return pipe 305.
[0045] When using this device, wheat is fed into the pre-grinding chamber 401 from the feed hopper 402. The first gear 405 is driven to rotate by the fourth motor 404. Through the meshing transmission between the first gear 405 and the second gear 406, the second rotating shaft 407 connected to the first gear 405 and the second gear 406 rotates in opposite directions, thereby driving the connecting rod 408 and the tilting plate 409 to rotate. The rotation of the connecting rod 408 and the tilting plate 409 moves the wheat in the pre-grinding chamber 401 before it enters the conveying pipe 410, causing friction between the wheat first. Before entering the crusher housing 101 through the conveying pipe 410, the wheat is pre-grinded, so that it can be crushed more quickly when it enters the crusher housing 101 for grinding.
[0046] The first gear 405 and the second gear 406 mesh with each other.
[0047] When the first gear 405 is driven by the fourth motor 404, it can drive the second gear 406 to rotate in the opposite direction, thereby driving the two second rotating shafts 407 to drive the turning plates 409 to rotate in opposite directions, and turning and pre-grinding the wheat located in the pre-grinding chamber 401.
[0048] The working principle and usage process of this utility model are as follows: When using this device, wheat is fed into the pre-grinding chamber 401 from the feed hopper 402. The first gear 405 is driven to rotate by the fourth motor 404. Through the meshing transmission between the first gear 405 and the second gear 406, the second rotating shaft 407 connected to the first gear 405 and the second gear 406 rotates in opposite directions, thereby driving the connecting rod 408 and the tilting plate 409 to rotate. The rotation of the connecting rod 408 and the tilting plate 409 moves the wheat in the pre-grinding chamber 401 before it enters the conveying pipe 410, causing friction between the wheat particles. Pre-grinding occurs during the time before the wheat enters the crusher housing 101 through the conveying pipe 410, thus allowing for proper grinding before it enters the crusher housing 101. During grinding and pulverizing, the pulverizing process can be completed more quickly. The first motor 102 drives the first rotating shaft 103 to rotate, which in turn drives the grinding disc 104 and the pulverizing blade 105 to rotate. Wheat is successively fed into the pulverizer housing 101 through the conveying pipe 410. It first enters the inner grinding ring 106, where the pulverizing blade 105 on the inner side of the inner grinding ring 106 engages with the pulverizing teeth 110 on the inner wall of the inner grinding ring 106 to perform the first pulverizing process. Subsequently, the wheat, after the first pulverization, enters the inner side of the outer grinding ring 108 through the first discharge port 107 on the inner grinding ring 106. There, the pulverizing blade 105 on the inner side of the outer grinding ring 108 engages with the pulverizing teeth 110 on the inner wall of the outer grinding ring 108 to perform a second pulverization process, completing the final pulverization. In the wheat milling process, the filter screen 111 blocks unground wheat particles, keeping them inside the mill casing 101 for further grinding. The ground flour, however, passes through the mesh of the filter screen 111 and falls into the screen mounting box 205. The second motor 203 drives the eccentric wheel 204 to rotate, causing the screen mounting box 205 to move downwards and compress the spring damper 202. When the off-axis protrusion of the eccentric wheel 204 disengages from the screen mounting box 205, the spring damper 202 causes the screen mounting box 205 to automatically rise and rebound. This reciprocating motion of the screen mounting box 205 drives the screen 206 to grind the flour entering the box. The flour is sieved through layers of sieve 206. The finest flour is discharged through the flour outlet 207, while larger particles are trapped by sieve 206 and slide towards the large particle outlet 208 as the sieve 206 vibrates, entering the large particle receiving box 301. The screw conveyor shaft 303 is driven by the third motor 304 to rotate, and the screw conveyor shaft 303 lifts the particles in the large particle receiving box 301 upward through the lifting pipe 302 and conveys them into the conveying pipe 410 through the return pipe 305, so that they re-enter the crusher shell 101 for further grinding. By sieving and automatically returning the unground wheat particles for secondary grinding, the grinding quality of wheat can be effectively improved, and the fineness of the flour can be increased.
[0049] It should be noted that, in this document, 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 process, method, article, or apparatus.
[0050] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. A wheat grinding device for wheat flour production, characterized in that: The system includes a crushing mechanism (1), the bottom of which is connected to a screening mechanism (2) via a pipe. The screening mechanism (2) includes a screening box shell (201), a spring damper (202) installed on the inner side of the screening box shell (201), a second motor (203) installed on the side of the screening box shell (201), the output end of the second motor (203) connected to an eccentric wheel (204), the top of the spring damper (202) connected to a screen mounting box (205), a screen (206) screwed onto the inner side of the screen mounting box (205), and a flour output through-hole at the bottom of the screening box shell (201). The screening box (201) has a large particle output port (208) through its side. One end of the large particle output port (208) is connected to the return device (3). The return device (3) includes a large particle receiving box (301). A lifting pipe (302) is connected to one side of the large particle receiving box (301). A screw conveyor shaft (303) is rotatably installed on the inner side of the lifting pipe (302). A third motor (304) is installed on the top of the lifting pipe (302). A return pipe (305) is connected to the side of the screw conveyor shaft (303). A pre-grinding mechanism (4) is provided above the crushing mechanism (1).
2. The wheat grinding device for wheat flour production according to claim 1, characterized in that: The crushing mechanism (1) includes a crusher housing (101). A first motor (102) is installed on the side of the crusher housing (101). The output end of the first motor (102) is connected to a first rotating shaft (103). One end of the first rotating shaft (103) is connected to a grinding disc (104). Two crushing blades (105) are provided on one side of the grinding disc (104). An inner grinding ring (106) and an outer grinding ring (108) are installed on the inner side of the crusher housing (101). A first discharge port (107) and a second discharge port (109) are respectively provided between the inner and outer sides of the inner grinding ring (106) and between the inner and outer sides of the outer grinding ring (108). Crushing teeth (110) are provided on the inner sides of both the inner grinding ring (106) and the outer grinding ring (108). A filter screen (111) is provided on the outer side of the second discharge port (109).
3. A wheat grinding device for wheat flour production according to claim 1, characterized in that: Corrugated pipes (209) are connected between the bottom of the screen mounting box (205) and the flour outlet (207), between the side of the screen mounting box (205) and the large particle outlet (208), and between the top of the screen mounting box (205) and the pipe at the bottom of the crusher shell (101).
4. A wheat grinding device for wheat flour production according to claim 1, characterized in that: The screen (206) is installed at an angle toward the large particle output port (208).
5. A wheat grinding device for wheat flour production according to claim 1, characterized in that: The pre-grinding mechanism (4) includes a pre-grinding chamber (401), a feed hopper (402) at the top of the pre-grinding chamber (401), a gear receiving chamber (403) mounted on the side of the pre-grinding chamber (401), a first gear (405) and a second gear (406) rotatably mounted on the inner side of the gear receiving chamber (403), and a fourth motor (404) mounted on the side of the gear receiving chamber (403). The output end of the fourth motor (404) is connected to the first gear (405). Gear (405) and second gear (406) are respectively connected to a second rotating shaft (407). A connecting rod (408) is installed on the outside of the second rotating shaft (407). A flipping plate (409) is installed on the inside and end of the connecting rod (408). A conveying pipe (410) is connected to the bottom of the pre-grinding chamber (401). The other end of the conveying pipe (410) is connected to the side of the crusher housing (101). One side of the middle section of the conveying pipe (410) is connected to the return pipe (305).
6. A wheat grinding device for wheat flour production according to claim 5, characterized in that: The first gear (405) and the second gear (406) mesh with each other.