Non-regrind flour classifying mill
By designing a flour grading and grinding machine that eliminates the need for repeated grinding, and utilizing the cooperation of the first and second grinding mechanisms, the problem of repeated grinding of wheat is solved, thereby improving the grinding efficiency and quality of flour.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DENGZHOU JINMAIWANG FLOUR CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-07-10
AI Technical Summary
In current flour production, wheat needs to be milled repeatedly, which increases production time and energy consumption and may contaminate flour quality.
A flour grading and grinding machine that eliminates the need for repeated grinding was designed. It includes a first grinding mechanism and a second grinding mechanism. The first grinding roller driven by a servo motor cooperates with the second grinding roller to perform preliminary and further grinding. Combined with a scraper and a filter screen, it achieves graded grinding.
This technology enables graded grinding of wheat, reducing production time and energy consumption, improving the grinding effect and quality of flour, and preventing contamination of wheat during the grinding process.
Smart Images
Figure CN224475069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flour grinding technology, specifically to a flour grading and grinding machine that eliminates the need for repeated grinding. Background Technology
[0002] In many flour production and experimental processes, wheat often needs to be milled to obtain flour. Traditional milling machines can usually only mill wheat to a single particle size. The milled wheat often needs to be put into the mill for repeated milling. Therefore, flour grading mills that require repeated milling are used to mill wheat for flour production.
[0003] However, existing technologies still have many shortcomings in practical use. For example, repeatedly grinding wheat used for flour production in a mill not only increases production time and energy consumption, but also lacks the function of grading and grinding wheat for flour production. Repeatedly grinding wheat used for flour production not only prolongs the production cycle and increases energy consumption, but also, due to the lack of a function to avoid repeated grinding, the wheat must undergo multiple grinding processes. This not only increases production time and energy consumption, but may also cause the wheat to be contaminated during the grinding process, thus affecting the quality of the flour. Utility Model Content
[0004] The purpose of this invention is to provide a flour grading and grinding machine that eliminates the need for repeated grinding, thereby solving the problem that existing technologies cannot grade and grind wheat used for flour production. Repeatedly grinding wheat for flour production not only prolongs the production cycle and increases energy consumption, but also, due to the lack of a function that eliminates the need for repeated grinding, wheat must undergo multiple grinding processes, which not only increases production time and energy consumption, but may also cause the wheat to become contaminated during the grinding process.
[0005] This utility model provides the following technical solution: a flour grading and grinding machine that eliminates the need for repeated grinding, including a base, a support frame fixedly installed at the top of the base, a first grinding cylinder fixedly installed on the inner side of the support frame, a feed hopper for feeding wheat on the upper side of the first grinding cylinder, a first grinding mechanism for the initial grinding of wheat inside the first grinding cylinder, and a second grinding mechanism for the secondary grinding of wheat on the lower side of the base near the first grinding cylinder.
[0006] As a preferred embodiment of the above technical solution, a feeding port is provided on one side of the bottom end of the first grinding cylinder, and a filter screen is fixedly installed inside the feeding port.
[0007] Through the above technical solution, wheat grains are filtered through a filter screen and then enter the interior of the second grinding cylinder through the feed port and pipe.
[0008] As a preferred embodiment of the above technical solution, the first grinding mechanism includes a first grinding roller and a servo motor. The bottom end of the first grinding roller is rotatably mounted inside the bottom end of the first grinding cylinder. An installation rod is inserted into the top end of the first grinding roller. A second grinding roller is fixedly mounted on the surface of the installation rod away from the top end of the first grinding roller. Grinding patterns are provided on the top end of the first grinding roller and the bottom end of the second grinding roller. A guide hole is opened on one side inside the second grinding roller. The top end of the guide hole is connected to the bottom end of the feed hopper.
[0009] With the above technical solution, wheat enters the interior of the feed hole through the feed hopper, which facilitates its conveying to the space between the first grinding roller and the second grinding roller.
[0010] As a preferred embodiment of the above technical solution, a connecting vertical rod is fixedly connected to the bottom end of the first grinding roller. The connecting vertical rod extends through the interior of the first grinding cylinder to the lower side of the first grinding cylinder, and a first rotating wheel is fixedly fitted on the surface of the end of the connecting vertical rod away from the first grinding cylinder.
[0011] The above technical solution allows the first grinding roller to rotate inside the first grinding cylinder via a rotating connecting vertical rod.
[0012] As a preferred embodiment of the above technical solution, the bottom end of the servo motor is fixedly installed on one side of the top of the support frame. The output end of the servo motor is fixedly connected to a rotating rod via a shaft. The rotating rod extends through the interior of the support frame to the lower side of the support frame. A second rotating wheel is fitted onto the end of the rotating rod away from the servo motor. A belt is fitted around the surface of the second rotating wheel. The end of the belt away from the second rotating wheel is fitted around the surface of the first rotating wheel. Scrapers are fixedly connected to both sides of the surface of the first grinding roller. One side of each set of scrapers is in contact with the inner wall of the first grinding cylinder, and the bottom ends of each set of scrapers are in contact with the bottom end of the interior of the first grinding cylinder.
[0013] With the above technical solution, when the servo motor is started to rotate, the shaft drives the rotating rod to rotate, the rotating rod drives the second rotating wheel to rotate, and the second rotating wheel drives the first rotating wheel to rotate via a belt. The rotating first rotating wheel drives the first grinding roller to rotate inside the first grinding cylinder via a connecting vertical rod. The rotating first grinding roller cooperates with the second grinding roller to perform preliminary grinding of wheat using the relatively set grinding grooves. At the same time, the scraper can scrape the inner wall and bottom of the first grinding cylinder to prevent wheat from adhering to the inner wall and bottom of the first grinding cylinder.
[0014] As a preferred embodiment of the above technical solution, the second grinding mechanism includes a mounting frame, the bottom end of which is fixedly mounted on the top end of the mounting base, a second grinding cylinder is fixedly mounted on the inner side of the mounting frame, a connecting crossbar is rotatably mounted inside the second grinding cylinder, and a third grinding roller is fixedly fitted onto the surface of the connecting crossbar. Grinding patterns are provided on the inside of the second grinding cylinder and the surface of the third grinding roller.
[0015] Through the above technical solution, after the wheat is initially ground by the first grinding mechanism, it falls into the second grinding cylinder. At this time, the connecting crossbar and the third grinding roller can be driven by an external drive device to rotate inside the second grinding cylinder. The third grinding roller cooperates with the grinding pattern on the inner wall of the second grinding cylinder to further finely grind the wheat, thereby improving the grinding effect and quality of the flour. At the same time, the use of the mounting frame and the fixed mounting base ensures the stability and reliability of the second grinding mechanism.
[0016] As a preferred embodiment of the above technical solution, a drive motor is fixedly installed on one side of the outer wall of the mounting frame via a mounting plate. The output end of the drive motor is fixedly connected to one end of a connecting crossbar via a shaft. A discharge valve is fixedly connected to the bottom end of the second grinding cylinder. The top end of the second grinding cylinder is connected to the bottom end of the discharge port via a pipe.
[0017] The above technical solution allows for the timely discharge of ground flour, preventing flour from accumulating inside the second grinding mechanism and affecting the next grinding effect. At the same time, the pipe at the top of the mounting frame is connected to the bottom of the discharge port, allowing wheat to smoothly enter the second grinding mechanism from the previous grinding stage, ensuring the continuity and efficiency of the entire grinding process.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] This invention uses a first grinding mechanism to initially grind wheat for flour production. After grinding in the first grinding mechanism, the wheat can directly enter the second grinding mechanism for further fine grinding, thus realizing the function of grading and grinding wheat for flour production. This effectively avoids the problem of flour quality degradation caused by repeated grinding of wheat in traditional mills. At the same time, the third grinding roller in the second grinding mechanism works in conjunction with the grinding texture on the inner wall of the second grinding cylinder to improve the grinding effect and quality of the flour, making the ground flour finer and more uniform. Attached Figure Description
[0020] Figure 1 A three-dimensional structural diagram of a flour grading and grinding machine that eliminates the need for repeated grinding;
[0021] Figure 2 A cross-sectional structural diagram of a flour grading and grinding machine designed to eliminate the need for repeated grinding;
[0022] Figure 3 A schematic diagram of the first grinding mechanism of a flour grading and grinding machine designed to eliminate the need for repeated grinding.
[0023] Figure 4 A schematic diagram of the second grinding mechanism of a flour grading and grinding machine designed to avoid repeated grinding.
[0024] In the diagram: 1. Base; 2. Support frame; 3. First grinding cylinder; 301. Feed port; 302. Filter screen; 4. Feed hopper; 5. First grinding mechanism; 501. First grinding roller; 502. Mounting rod; 503. Second grinding roller; 504. Guide hole; 505. Connecting vertical rod; 506. First rotating wheel; 507. Servo motor; 508. Rotating rod; 509. Second rotating wheel; 510. Belt; 511. Scraper; 6. Second grinding mechanism; 601. Mounting frame; 602. Second grinding cylinder; 603. Connecting horizontal rod; 604. Third grinding roller; 605. Drive motor; 606. Discharge valve. Detailed Implementation
[0025] 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.
[0026] like Figures 1-4 As shown, this utility model provides a technical solution: a flour grading and grinding machine that eliminates the need for repeated grinding, including a base 1, a support frame 2 fixedly installed at the top of the base 1, a first grinding cylinder 3 fixedly installed on the inner side of the support frame 2, a feeding port 301 opened on one side of the bottom end of the first grinding cylinder 3, a filter screen 302 fixedly installed inside the feeding port 301, wheat particles are filtered by the filter screen 302 and enter the interior of the second grinding cylinder 602 through the feeding port 301 and the pipe, and a feeding hopper 4 for feeding wheat is provided on the upper side of the first grinding cylinder 3, the operator first pours wheat into the first grinding cylinder 3 through the feeding hopper 4.
[0027] As one implementation method in this embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the first grinding cylinder 3 is equipped with a first grinding mechanism 5 for the initial grinding of wheat. The first grinding mechanism 5 includes a first grinding roller 501 and a servo motor 507. The bottom end of the first grinding roller 501 is rotatably mounted inside the bottom end of the first grinding cylinder 3. A mounting rod 502 is inserted into the top end of the first grinding roller 501. A second grinding roller 503 is fixedly fitted onto the surface of the mounting rod 502 away from the top end of the first grinding roller 501. Both the top end of the first grinding roller 501 and the bottom end of the second grinding roller 503 are provided with grinding patterns. A guide hole 504 is opened on one side inside the second grinding roller 503. The top end of the guide hole 504 is connected to the bottom end of the feed hopper 4. A connecting vertical rod 505 is fixedly connected to the bottom end of the first grinding roller 501. The connecting vertical rod 505 extends through the interior of the first grinding cylinder 3 to the lower side of the first grinding cylinder 3. A first rotating wheel 506 is fixedly fitted onto the surface of the connecting vertical rod 505 away from the first grinding cylinder 3. The bottom end of the servo motor 507 is fixedly installed on one side of the top of the support frame 2. The output end of the servo motor 507 is fixedly connected to a rotating rod 508 via a shaft. The rotating rod 508 extends through the interior of the support frame 2 to the lower side of the support frame 2. A second rotating wheel 509 is fitted onto the end of the rotating rod 508 away from the servo motor 507. A belt 510 is wrapped around the surface of the second rotating wheel 509. One end of the second rotating roller 509 is fitted around the surface of the first rotating roller 506. Scrapers 511 are fixedly connected to both sides of the surface of the first grinding roller 501. One side of each scraper 511 is in contact with the inner wall of the first grinding cylinder 3, and the bottom ends of each scraper 511 are in contact with the bottom of the inside of the first grinding cylinder 3. The rotation of the first grinding roller 501 drives the two scrapers 511 to rotate along the inner wall of the first grinding cylinder 3, thereby scraping off the wheat grains adhering to the inner wall of the first grinding cylinder 3, preventing wheat grains from remaining on the inner wall of the first grinding cylinder 3. Simultaneously, the bottom ends of the two scrapers 511 push the wheat grains accumulated inside the first grinding cylinder 3 to the filter screen 302. At the top, wheat grains are filtered by the filter screen 302 and enter the interior of the second grinding cylinder 602 through the feed port 301 and the pipe. The wheat falls between the second grinding roller 503 and the first grinding roller 501 through the guide hole 504. Then, the servo motor 507 starts and drives the rotating rod 508 to rotate. The second rotating wheel 509 on the rotating rod 508 drives the first rotating wheel 506 to rotate through the belt 510. The rotating first rotating wheel 506 drives the first grinding roller 501 to rotate inside the first grinding cylinder 3 through the connecting vertical rod 505. The rotating first grinding roller 501 and the second grinding roller 503 cooperate to perform preliminary grinding of the wheat using the relatively set grinding grooves.
[0028] As one implementation method in this embodiment, such as Figure 1 , Figure 2 and Figure 4As shown, a second grinding mechanism 6 for secondary grinding of wheat is provided on the lower side of the base 1 near the first grinding cylinder 3. The second grinding mechanism 6 includes a mounting frame 601, the bottom end of which is fixedly mounted to the top end of the base 1. A second grinding cylinder 602 is fixedly mounted on the inner side of the mounting frame 601. A connecting crossbar 603 is rotatably mounted inside the second grinding cylinder 602. A third grinding roller 604 is fixedly fitted onto the surface of the connecting crossbar 603. Grinding patterns are provided on the interior of the second grinding cylinder 602 and the surface of the third grinding roller 604. A drive motor 605 is fixedly mounted on one side of the outer wall of the mounting frame 601 via a mounting plate. The output end of the drive motor 605 is fixedly connected to one end of the connecting crossbar 603 via a shaft. The bottom of the second grinding cylinder 602... The end of the grinding cylinder 602 is fixedly connected to the discharge valve port 606. The top end of the second grinding cylinder 602 is connected to the bottom end of the discharge port 301 through a pipe. The operation of starting the drive motor 605 will immediately unfold the cylinder. Through the transmission action of the shaft, the connecting crossbar 603 will start to rotate inside the second grinding cylinder 602. As the connecting crossbar 603 rotates, the third grinding roller 604 will also start to rotate inside the second grinding cylinder 602. The third grinding roller 604 is closely matched with the grinding pattern carefully set on the inner wall of the second grinding cylinder 602, and together they work on the wheat grains. In this series of precisely matched grinding processes, the wheat grains are gradually refined and finally transformed into fine flour, achieving the purpose of secondary grinding of wheat for flour production.
[0029] Working principle: When wheat needs to be ground into flour, the operator first pours the wheat into the first grinding cylinder 3 through the feed hopper 4. The wheat falls through the guide hole 504 between the second grinding roller 503 and the first grinding roller 501. Subsequently, the servo motor 507 starts, driving the rotating rod 508 to rotate. The second rotating wheel 509 on the rotating rod 508 drives the first rotating wheel 506 to rotate through the belt 510. The rotating first rotating wheel 506 drives the first grinding roller 501 to rotate inside the first grinding cylinder 3 through the connecting vertical rod 505. The rotating first grinding roller 501 cooperates with the second grinding roller 503, utilizing... The opposing grinding grooves perform preliminary grinding of wheat. The ground wheat particles accumulate in the first grinding cylinder 3. The rotating first grinding roller 501 drives two sets of scrapers 511 to rotate along the inner wall of the first grinding cylinder 3, thereby scraping off the wheat particles attached to the inner wall of the first grinding cylinder 3 to prevent wheat particles from remaining on the inner wall of the first grinding cylinder 3. At the same time, the bottom ends of the two sets of scrapers 511 push the wheat particles accumulated inside the first grinding cylinder 3 to the top of the filter screen 302. After being filtered by the filter screen 302, the wheat particles enter the interior of the second grinding cylinder 602 through the discharge port 301 and the pipe.
[0030] When the wheat grains can smoothly enter the internal space of the second grinding cylinder 602, the operation of starting the drive motor 605 is immediately initiated. Through the transmission action of the shaft, the connecting crossbar 603 begins to rotate inside the second grinding cylinder 602. As the connecting crossbar 603 rotates, the third grinding roller 604 also begins to rotate inside the second grinding cylinder 602 accordingly. The third grinding roller 604 closely cooperates with the grinding patterns carefully set on the inner wall of the second grinding cylinder 602, working together to grind the wheat grains. In this series of precisely coordinated grinding processes, the wheat grains are gradually refined and finally transformed into fine flour, achieving the purpose of secondary grinding of wheat for flour production.
[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A flour grading and grinding machine that eliminates the need for repeated grinding, comprising a base (1), characterized in that: A support frame (2) is fixedly installed at the top of the base (1), and a first grinding cylinder (3) is fixedly installed on the inner side of the support frame (2). A feed hopper (4) for feeding wheat is provided on the upper side of the first grinding cylinder (3). A first grinding mechanism (5) for the first grinding of wheat is provided inside the first grinding cylinder (3). A second grinding mechanism (6) for the second grinding of wheat is provided on the lower side of the base (1) near the first grinding cylinder (3). The first grinding mechanism (5) includes a first grinding roller (501) and a servo motor (507). The bottom end of the first grinding roller (501) is rotatably mounted inside the bottom end of the first grinding cylinder (3). A mounting rod (502) is inserted into the top end of the first grinding roller (501). A second grinding roller (503) is fixedly mounted on the surface of the mounting rod (502) away from the top end of the first grinding roller (501). Both the top end of the first grinding roller (501) and the bottom end of the second grinding roller (503) are provided with... The grinding pattern is formed by the following: a guide hole (504) is provided on one side of the interior of the second grinding roller (503). The top end of the guide hole (504) is connected to the bottom end of the feed hopper (4). A connecting vertical rod (505) is fixedly connected to the bottom end of the first grinding roller (501). The connecting vertical rod (505) extends through the interior of the first grinding cylinder (3) to the lower side of the first grinding cylinder (3). A first rotating wheel (506) is fixedly fitted on the surface of the connecting vertical rod (505) away from the first grinding cylinder (3). The second grinding mechanism (6) includes a mounting frame (601), the bottom end of which is fixedly mounted on the top end of the mounting frame (601), a second grinding cylinder (602) is fixedly mounted on the inner side of the mounting frame (601), a connecting crossbar (603) is rotatably mounted inside the second grinding cylinder (602), a third grinding roller (604) is fixedly mounted on the surface of the connecting crossbar (603), grinding patterns are provided on the inside of the second grinding cylinder (602) and the surface of the third grinding roller (604), a drive motor (605) is fixedly mounted on one side of the outer wall of the mounting frame (601) through a mounting plate, the output end of the drive motor (605) is fixedly connected to one end of the connecting crossbar (603) through a shaft, a discharge valve port (606) is fixedly connected to the bottom end of the second grinding cylinder (602), and the top end of the second grinding cylinder (602) is connected to the bottom end of the discharge port (301) through a pipe.
2. The flour grading and grinding machine without repeated grinding according to claim 1, characterized in that: The first grinding cylinder (3) has a feeding port (301) on one side of its bottom end, and a filter screen (302) is fixedly installed inside the feeding port (301).
3. The flour grading and grinding machine without repeated grinding according to claim 1, characterized in that: The bottom end of the servo motor (507) is fixedly installed on one side of the top of the support frame (2). The output end of the servo motor (507) is fixedly connected to a rotating rod (508) through a shaft. The rotating rod (508) extends through the interior of the support frame (2) to the lower side of the support frame (2). A second rotating wheel (509) is fitted at the end of the rotating rod (508) away from the servo motor (507). A belt (510) is fitted around the surface of the second rotating wheel (509). The end of the belt (510) away from the second rotating wheel (509) is fitted around the surface of the first rotating wheel (506). Scrapers (511) are fixedly connected to both sides of the surface of the first grinding roller (501). One side of the two sets of scrapers (511) is in contact with the inner wall of the first grinding cylinder (3). The bottom ends of the two sets of scrapers (511) are in contact with the bottom end inside the first grinding cylinder (3).