Automatic drying and grading grinding equipment for peanut powder production

Abstract

This invention relates to the technical field of equipment for peanut flour production, and more particularly to an automatically drying, grading, and grinding device for peanut flour production. The device includes a base, a support frame connected to the upper surface of the base, and a support rod connected to the inner surface of the through hole at the upper end of the support frame. This automatically drying, grading, and grinding device for peanut flour production, through the arrangement of a rolling screening mechanism and a vibration mechanism, uses two sets of rollers with different screening apertures within the heating module. When peanut kernels are fed into the inner roller from the feeding hopper, the inner roller rotates. Under the screening of the relatively smaller aperture, smaller peanut kernels fall into the outer roller. The inner and outer rollers rotate in opposite directions, simultaneously screening out different types of peanut kernels according to size and removing impurities. Furthermore, by using different drying conditions, the drying effect of all peanut kernels is ensured to be relatively consistent.

Description

Technical Field

[0001] This invention relates to the technical field of equipment for peanut flour production, and in particular to an automatic drying, grading, and grinding equipment for peanut flour production. Background Technology

[0002] Peanut powder is a powdered food ingredient made from peanut kernels through processes such as roasting, peeling, and grinding. It is mainly divided into three categories: full-fat type, semi-defatted type, and fully defatted type. Full-fat type retains natural oils and has a rich aroma, but it is easily oxidized. Semi-defatted type partially removes oils, balancing flavor and stability. Full-defatted type contains almost no oils, has a long shelf life, but has a milder flavor. The production of peanut powder involves steps such as screening, roasting, cooling, peeling, grinding, sieving, and sterilization to form a fine powder. Peanut powder is widely used in the food processing industry. It can be used as a natural flavor enhancer and nutritional fortifier (rich in protein and dietary fiber) in baked goods, as well as as a base for seasoning sauces or instant drinks, enhancing the flavor and nutritional value of food. In the production of full-fat peanut powder, drying before grinding is a crucial step to ensure grinding efficiency and fineness. The moisture content of the peanut kernels must be precisely controlled within a safe and suitable range. The drying module in common peanut powder grinding equipment dries the incoming peanut kernels uniformly during use. However, due to the different sizes of the peanut kernels, the drying conditions vary. Under the same drying conditions, it is easy for some peanut kernels to be over-dried and others under-dried.

[0003] To address the aforementioned issues, a search revealed a patent with publication number CN112547174A that discloses a peanut crushing and grinding device. The patent states that, "Compared with existing technologies, the advantages of this invention are: firstly, in this invention, the outer grinding disc is sleeved outside the inner grinding disc. The outer grinding disc rotates, and the peanuts are ground in the gap between the inner and outer grinding discs. The size of the gap between the inner and outer grinding discs determines the size of the peanut fragments. Furthermore, the disassembly of the inner grinding disc is very simple; just lift the outer and inner grinding discs upwards to move them out of the slot and into the sliding groove, then pull them to move them within the sliding groove." The outer and inner grinding discs can be easily removed, allowing for a simple change of the inner grinding disc size to alter the size of the ground peanuts. This effectively solves the technical problem in existing machines that can only produce one size of peanut crumbs. Secondly, after the grinding process is complete, the inner and outer grinding discs are lifted out of their slots and placed in a sliding groove. Pulling them along the sliding groove allows for easy removal of the ground peanuts and facilitates cleaning of the inner and outer grinding discs. Similarly, the inner and outer grinding discs are secured before use. The ring slides along the sliding groove, and the inner and outer grinding discs fall naturally after reaching the slot, locking them in place. This makes disassembly of the inner and outer grinding discs easy, facilitating cleaning after each peanut processing session and preventing peanut oil residue from remaining and deteriorating on the grinding device, which would be detrimental to subsequent food processing hygiene. Thirdly, this invention features a shaking protrusion below the hopper. When peeling peanuts, a rotary motor rotates the shaking protrusion, causing the hopper to shake up and down. When the hopper is lifted, the hopper and push block crush the peanuts more thoroughly, and the shaking of the hopper further enhances the crushing effect. The peanuts constantly change position, thus making the peeling of peanuts more thorough. Although the shaking protrusions 27 and the rotary motor 28 set below the hopper 22 cause the hopper 22 to vibrate continuously during the peeling and unloading process, this vibration helps to tumble and mix peanut particles of different sizes in the hopper, avoids stratification, and promotes the smooth discharge of all particles (regardless of size) from the movable door 221 into the grinding device 3, which improves the versatility of unscreened raw materials to a certain extent, this vibration only solves the material flow problem and does not perform any grading or control of particle size.

[0004] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic drying and grading grinding device for peanut powder production, in order to solve the problem mentioned in the background art that in the existing grinding equipment for peanut powder production, the drying module uniformly dries the fed peanut kernels during use. In this process, due to the different sizes of the peanut kernels, the drying conditions required are different. Under the same drying conditions, it is easy to cause some peanut kernels to be over-dried and some peanut kernels to be under-dried.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic drying and grading grinding device for peanut flour production, comprising a base, a rolling screening mechanism, and a vibration mechanism.

[0007] A support frame is connected to the upper surface of the base, and a support rod is connected to the inner ring surface of the through hole at the upper end of the support frame. A rolling screening mechanism is provided on the outer side of the support rod.

[0008] The rolling screening mechanism includes a first support, an inner roller connected to the outer surface of the first support, a third support connected to the outer ring surface of the support rod, and an outer roller connected to one side surface of the third support.

[0009] The outer roller is equipped with a vibration mechanism.

[0010] The vibration mechanism includes a connecting column, and a first connecting shaft is provided at one end of the connecting column.

[0011] Preferably, the outer ring surface of the support rod is fixedly connected to the inner ring surface of the first bracket, and the inner roller is provided with a spiral blade.

[0012] Preferably, a second bracket is connected to one side surface of the inner roller, and a funnel is connected to one side surface of the second bracket.

[0013] Preferably, two sets of funnels are provided, the lateral distance between the two sets of funnels is slightly greater than the diameter of the support rod, and a discharge bin is connected to the upper surface of the funnel.

[0014] Preferably, the outer ring surface of the support rod is rotatably connected to the inner ring surface of the third bracket, the side of the inner roller is provided with sieve holes, the side of the outer roller is provided with sieve holes, and the side sieve holes of the inner roller are larger than the side sieve holes of the outer roller.

[0015] Preferably, the inner ring surface of the outer roller is connected to a sleeve post, and the inner ring surface of the sleeve post is slidably connected to the outer ring surface at the upper end of the connecting post.

[0016] Preferably, a roller is fitted on the outer ring surface of the first connecting shaft, a spring is connected to the upper surface of the connecting post, and the other end of the spring is connected to the bottom surface of the inner ring of the post.

[0017] Preferably, the outer ring surface of the inner roller is connected with a protrusion, and the outer surface of the protrusion abuts against the outer ring surface of the roller.

[0018] Preferably, a transmission mechanism is provided above the base. The transmission mechanism includes a fourth bracket. A motor is installed in the mounting groove at the upper end of the fourth bracket. A track is fitted onto the output end of the motor. A second connecting shaft is connected to the inner ring surface of the other end of the track. A first gear is fitted onto the outer ring surface of one end of the second connecting shaft. A second gear is fitted onto the outer ring surface of the support rod. A third gear is fitted onto the outer ring surface of the support rod. The second gear and the third gear are respectively meshed with the first gear. One side surface of the second gear is fixedly connected to one side surface of the third bracket. A fifth bracket is fitted onto the outer ring surface of the second connecting shaft. One side surface of the fifth bracket is connected to one side surface of the support frame.

[0019] Preferably, a dust collection box is connected to the upper surface of the base, and the dust collection box is located directly below the outer roller. A material collection box is connected to the upper surface of the base, and the material collection box is located directly below the discharge ports of the inner and outer rollers.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This peanut powder production equipment features an automatic drying and grading grinding system. Through the setup of a rolling screening mechanism and a vibration mechanism, the heating module contains two sets of rollers with different screening apertures. When peanut kernels are fed into the inner roller from the feeding hopper, the inner roller rotates. Under the screening of the relatively smaller aperture, smaller peanut kernels fall into the outer roller. The inner and outer rollers rotate in opposite directions, screening different types of peanut kernels according to size and removing impurities. Simultaneously, different drying conditions ensure that all peanut kernels are dried to a relatively consistent effect. Furthermore, to prevent peanut kernels from getting stuck in the inner roller's screen holes, the rollers in the vibration mechanism periodically contact protrusions while rotating on the outer wall of the inner roller. These protrusions are released after compressing the springs, colliding with the outer wall of the inner roller to achieve vibration and prevent peanut kernels from getting stuck in the inner roller's screen holes.

[0022] 2. This peanut powder production equipment is an automatic drying and grading grinding device. Through the setting of the transmission mechanism, during use, the drive motor realizes the inner and outer rollers to rotate in opposite directions on the same axis under the action of the first gear, the second gear and the third gear. In addition, the dust collection box and the material collection box can collect the screened impurities and collect the dried peanut kernels. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure in which the base and dust collection box of the present invention cooperate.

[0025] Figure 3 This is a schematic diagram of the structure in which the motor and track cooperate with each other according to the present invention;

[0026] Figure 4 This is a schematic diagram of the interlocking structure of the first gear and the second gear of the present invention;

[0027] Figure 5 This is a schematic diagram of the interaction between the inner roller and the protrusion in this invention;

[0028] Figure 6 This is a schematic diagram of the interlocking structure of the sleeve column and the connecting column of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure in which the funnel and the discharge bin of the present invention cooperate.

[0030] In the diagram: 1. Base; 2. Support frame; 3. Support rod; 4. Rolling screening mechanism; 401. First support; 402. Inner roller; 403. Second support; 404. Funnel; 405. Discharge bin; 406. Third support; 407. Outer roller; 5. Vibration mechanism; 501. Sleeve column; 502. Connecting column; 503. First connecting shaft; 504. Roller; 505. Spring; 506. Protrusion; 6. Transmission mechanism; 601. Fourth support; 602. Motor; 603. Track; 604. Second connecting shaft; 605. First gear; 606. Second gear; 607. Third gear; 608. Fifth support; 7. Dust collection box; 8. Material collection box. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0032] Please see Figure 1-7 This invention provides a technical solution: an automatic drying and grading grinding device for peanut flour production, comprising a base 1, a rolling screening mechanism 4, and a vibration mechanism 5.

[0033] A support frame 2 is connected to the upper surface of the base 1, and a support rod 3 is connected to the inner ring surface of the through hole at the upper end of the support frame 2. A rolling screening mechanism 4 is provided on the outer side of the support rod 3.

[0034] The rolling screening mechanism 4 includes a first support 401, an inner roller 402 connected to the outer surface of the first support 401, a third support 406 connected to the outer ring surface of the support rod 3, and an outer roller 407 connected to one side surface of the third support 406.

[0035] The outer roller 407 is equipped with a vibration mechanism 5 inside;

[0036] The vibration mechanism 5 includes a connecting column 502, and a first connecting shaft 503 is provided at one end of the connecting column 502.

[0037] Furthermore, the outer ring surface of the support rod 3 is fixedly connected to the inner ring surface of the first bracket 401. The inner roller 402 is equipped with a spiral blade. Through the arrangement of the support rod 3, the first bracket 401, the inner roller 402, and the spiral blade, the inner roller 402 can be stabilized and coaxially supported during use, and the internal material can be driven to be axially transported. The support rod 3 is the core rotating shaft, and the first bracket 401 fixes it to the inside of the inner roller 402 to ensure that the two rotate coaxially, thus stabilizing the inner roller 402. The spiral blade (or spiral guide vane) inside rotates together with the inner roller 402, which can continuously push the peanut kernels entering from one end forward. During the pushing process, smaller peanut kernels and impurities will fall through the sieve holes on the side wall of the inner roller 402, thereby achieving preliminary screening and axial movement of the material, preventing accumulation at the inlet.

[0038] Furthermore, a second bracket 403 is connected to one side surface of the inner roller 402, and a funnel 404 is connected to one side surface of the second bracket 403. Through the arrangement of the inner roller 402, the second bracket 403 and the funnel 404, an inlet can be provided for material discharge during use. The second bracket 403 is used to fix the funnel 404, and the funnel 404 is the inlet for material (peanut kernels) to enter the inner roller 402.

[0039] Furthermore, two sets of funnels 404 are provided, with the lateral distance between the two sets of funnels 404 being slightly greater than the diameter of the support rod 3. A discharge bin 405 is connected to the upper surface of the funnels 404. Through the arrangement of the funnels 404, support rod 3, and discharge bin 405, raw materials can be fed during use. The two sets of funnels 404 facilitate the rapid feeding of materials (peanut kernels) into the inner roller 402. The discharge bin 405 provides a connection base for the external feed port. The two sets of funnels 404 are connected to the lower side of the discharge bin 405 to facilitate the rapid and directional entry of materials into the inner roller 402. The lateral distance between the two sets of funnels 404 being slightly greater than the support rod 3 facilitates the installation and maintenance of the funnels 404.

[0040] Furthermore, the outer ring surface of the support rod 3 is rotatably connected to the inner ring surface of the third bracket 406. The inner roller 402 has sieve holes on its side, and the outer roller 407 has sieve holes on its side. The sieve holes on the side of the inner roller 402 are larger than those on the side of the outer roller 407. Through the arrangement of the support rod 3, the third bracket 406, the inner roller 402, the outer roller 407, and the sieve holes, the inner and outer rollers 407 can rotate in opposite directions during use, enabling two-stage sieving of the peanut kernels. The third bracket 406 can rotate on the support rod 3, thereby causing the outer roller 407 to rotate independently of the inner roller 402. The inner drum 402 has larger sieve holes, allowing smaller peanut kernels and most impurities to pass through, thus achieving peanut kernel screening by size. The outer drum 407 has smaller sieve holes. After the small peanut kernels that pass through the inner drum 402 enter the outer drum 407, the smallest peanut kernels and fine impurities will fall through its smaller sieve holes during the rotation of the outer drum 407, while peanut kernels that are slightly larger but still smaller than the inner drum sieve holes are left inside the outer drum 407. By controlling the size difference between the inner and outer drum sieve holes, peanut kernels can be accurately graded by size, laying the foundation for subsequent differentiated drying of peanut kernels of different sizes.

[0041] Furthermore, a sleeve 501 is connected to the inner ring surface of the outer roller 407. The inner ring surface of the sleeve 501 is slidably connected to the outer ring surface of the upper end of the connecting column 502. Through the arrangement of the outer roller 407, the sleeve 501 and the connecting column 502, the installation foundation of the vibration mechanism 5 can be realized during use, and the connecting column 502 is allowed to reciprocate in the vertical direction. The sleeve 501 is fixed on the inner wall of the outer roller 407 as a stationary frame for the vibration component. The connecting column 502 can slide up and down in the inner ring of the sleeve 501. This sliding connection provides physical space for the vibration action, so that the connecting column 502 and the roller 504 at its lower end can be periodically lifted and lowered under the action of the protrusion 506 on the outer wall of the inner roller 402.

[0042] Furthermore, a roller 504 is fitted onto the outer ring surface of the first connecting shaft 503, and a spring 505 is connected to the upper surface of the connecting post 502. The other end of the spring 505 is connected to the bottom surface of the inner ring of the sleeve post 501. Through the arrangement of the first connecting shaft 503, roller 504, connecting post 502, spring 505, and sleeve post 501, the rotational motion of the inner roller 402 can be converted into the periodic reciprocating vibration of the connecting post 502 during use. The roller 504 is installed at the lower end of the connecting post 502 via the first connecting shaft 503 and can engage with the protrusion 506 on the outer wall of the inner roller 402. When the inner roller 402 rotates, the protrusion 506 passes the roller 504, which will push the roller 504 and the connecting post 502 upward, compressing the spring 505. After the protrusion 506 has rotated, the connecting post 502 and the connecting post 502 will be pushed upward by the protrusion 506, compressing the spring 505. After the protrusion 506 has rotated, the connecting post 502 and the roller 504 will fall back to their original positions under the restoring force of the spring 505. This "push-fall" cycle generates periodic impact vibration.

[0043] Furthermore, the outer surface of the inner roller 402 is connected to a protrusion 506. The outer surface of the protrusion 506 abuts against the outer surface of the roller 504. Through the arrangement of the inner roller 402, protrusion 506, roller 504, spring 505, and connecting column 502, vibration can be triggered during use, and the vibration force can be directly transmitted to the inner roller 402. Multiple protrusions 506 are irregularly distributed on the outer wall of the inner roller 402. When the inner roller 402 rotates, each passing protrusion 506 will push up the roller 504 and connecting column 502, compressing the spring 505. At the moment when the protrusion 506 passes the apex of the roller 504, the restoring force of the spring 505 drives the connecting column 502 and roller 504 to violently strike the outer wall of the inner roller 402, generating instantaneous vibration. This vibration is transmitted to the screen through the wall of the inner roller 402, which can effectively shake off the peanut kernels stuck in the screen holes, prevent the screen holes from clogging, and ensure that the screening process is continuously and efficiently carried out.

[0044] Furthermore, a transmission mechanism 6 is provided above the base 1. The transmission mechanism 6 includes a fourth bracket 601. A motor 602 is installed in the mounting slot at the upper end of the fourth bracket 601. A track 603 is sleeved on the output end of the motor 602. A second connecting shaft 604 is connected to the inner ring surface of the other end of the track 603. A first gear 605 is sleeved on the outer ring surface of one end of the second connecting shaft 604. A second gear 606 is sleeved on the outer ring surface of the support rod 3. A third gear 607 is sleeved on the outer ring surface of the support rod 3. The third gear 607 meshes with the first gear 605. One side surface of the second gear 606 is fixedly connected to one side surface of the third bracket 406. The outer ring surface of the second connecting shaft 604 is fitted with a fifth bracket 608. One side surface of the fifth bracket 608 is connected to one side surface of the support frame 2. The system is connected via the base 1, fourth bracket 601, motor 602, track 603, second connecting shaft 604, first gear 605, support rod 3, second gear 606, third gear 607, third bracket 406, and fifth bracket 608. The bracket 608 and support frame 2, during use, allow the inner and outer rollers 407 to rotate coaxially in opposite directions, driven by a single motor 602. The motor 602 transmits power to the second connecting shaft 604 via the track 603, driving the first gear 605 to rotate. The first gear 605 simultaneously meshes with the second gear 606 and the third gear 607. The second gear 606 is fixed to the third bracket 406, thereby driving the outer roller 407 to rotate. The third gear 607 is fixed to the support rod 3, thereby driving the inner roller 402 to rotate. Since the second gear 606 and the third gear 607 mesh with the same first gear 605, their rotation directions must be opposite, thus realizing the reverse rotation of the inner roller 402 and the outer roller 407. This design simplifies the transmission system, and a single motor 602 can complete the complex differential reverse drive, allowing peanut kernels of different sizes to be more fully turned and screened in the inner and outer rollers 407, improving grading efficiency and drying uniformity. The model of the motor 602 is: Dedong three-phase asynchronous motor YE3-90S-4.

[0045] Furthermore, a dust collection box 7 is connected to the upper surface of the base 1, which is located directly below the outer roller 407. A material collection box 8 is also connected to the upper surface of the base 1, which is located directly below the discharge ports of the inner roller 402 and the outer roller 407. Through the arrangement of the base 1, the dust collection box 7, and the material collection box 8, impurities screened out and graded peanut kernels can be collected separately during use. The dust collection box 7, located directly below the outer roller 407, is specifically used to collect the finest powder, dust, and tiny impurities falling from the smallest sieve hole of the outer roller 407, keeping the working environment clean. The material collection box 8, located below the inner roller 402 and the outer roller 407, is used to collect peanut kernels of different particle sizes that fall from their respective outlets after screening and drying, facilitating subsequent grinding.

[0046] Working principle: First, the peanut kernels to be processed are fed into the feeding hopper 405, passing through the funnel 404 into the inner drum 402. The drying module on the outside of the outer drum 407 is started, and then the motor 602 of the transmission mechanism 6 is started. The motor 602 drives the second connecting shaft 604 to rotate through the track 603 at its output end. The second connecting shaft 604 drives the first gear 605 on it to rotate. The first gear 605 meshes with the second gear 606 and the third gear 607 fixed on the support rod 3. Since the second gear 606 is fixedly connected to the third bracket 406 and the third gear 607 is fixed to the support rod 3, the third bracket 406 drives the outer drum 407 to rotate, while the support rod 3 drives the first bracket 401 and the inner drum 402 to rotate in the opposite direction. During the rotational drying process, the spiral blades inside the inner drum 402 push the peanut kernels towards the discharge port of the inner drum 402. Smaller peanut kernels and impurities fall through the larger sieve holes on the side of the inner drum 402 into the outer drum 407, while larger peanut kernels... Peanut kernels remain inside the inner drum 402 for further drying and movement, falling from its outlet into the collection box 8. Peanut kernels entering the outer drum 407 undergo further screening during reverse rotation. Fine dust falls through smaller sieve holes on the side of the outer drum 407 into the dust collection box 7 below. Smaller peanut kernels remain inside the outer drum 407 for continued drying and fall from its outlet into the collection box 8, thus achieving drying by size grading. During this process, peanut kernels of different sizes after grading pass through the inner drum 402 and outer drum 407... Drying is carried out under different drying conditions to avoid over- or under-drying caused by uniform drying. In addition, the protrusions 506 on the outer ring surface of the inner drum 402 periodically push up the rollers 504 of the vibration mechanism 5 during rotation. The rollers 504 drive the connecting column 502 to slide upward along the sleeve column 501 through the first connecting shaft 503 and compress the spring 505. After the protrusions 506 have rotated, the springs 505 rebound and drive the connecting column 502 and the rollers 504 to fall and hit the outer wall of the inner drum 402, generating vibration to prevent the screen holes from clogging.

[0047] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic drying and grading grinding device for peanut flour production, comprising a base (1), a rolling screening mechanism (4), and a vibration mechanism (5), characterized in that: The upper surface of the base (1) is connected to a support frame (2), and the inner surface of the through hole at the upper end of the support frame (2) is connected to a support rod (3). A rolling screening mechanism (4) is provided on the outer side of the support rod (3). The rolling screening mechanism (4) includes a first support (401), an inner roller (402) is connected to the outer surface of the first support (401), a third support (406) is connected to the outer ring surface of the support rod (3), and an outer roller (407) is connected to one side surface of the third support (406). The outer roller (407) is equipped with a vibration mechanism (5); The vibration mechanism (5) includes a connecting column (502), and a first connecting shaft (503) is provided at one end of the connecting column (502).

2. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: The outer ring surface of the support rod (3) is fixedly connected to the inner ring surface of the first bracket (401), and the inner roller (402) is provided with a spiral blade inside.

3. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: A second support (403) is connected to one side surface of the inner roller (402), and a funnel (404) is connected to one side surface of the second support (403).

4. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 3, characterized in that: Two sets of funnels (404) are provided, and the lateral distance between the two sets of funnels (404) is slightly greater than the diameter of the support rod (3). The upper surface of the funnel (404) is connected to the discharge bin (405).

5. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: The outer ring surface of the support rod (3) is rotatably connected to the inner ring surface of the third bracket (406). The inner roller (402) has a sieve hole on its side, and the outer roller (407) has a sieve hole on its side. The sieve hole on the side of the inner roller (402) is larger than the sieve hole on the side of the outer roller (407).

6. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: The inner ring surface of the outer roller (407) is connected to a sleeve (501), and the inner ring surface of the sleeve (501) is slidably connected to the outer ring surface of the upper end of the connecting column (502).

7. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: A roller (504) is sleeved on the outer ring surface of the first connecting shaft (503), and a spring (505) is connected to the upper surface of the connecting post (502). The other end of the spring (505) is connected to the bottom surface of the inner ring of the sleeve post (501).

8. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: The outer ring surface of the inner roller (402) is connected to a protrusion (506), and the outer surface of the protrusion (506) abuts against the outer ring surface of the roller (504).

9. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: A transmission mechanism (6) is provided above the base (1). The transmission mechanism (6) includes a fourth bracket (601). A motor (602) is installed at the upper mounting slot of the fourth bracket (601). A track (603) is sleeved on the output end of the motor (602). A second connecting shaft (604) is connected to the inner ring surface of the other end of the track (603). A first gear (605) is sleeved on the outer ring surface of one end of the second connecting shaft (604). A second gear (606) is sleeved on the outer ring surface of the support rod (3). A third gear (607) is sleeved on the outer ring surface of the support rod (3). The second gear (606) and the third gear (607) are respectively meshed with the first gear (605). One side surface of the second gear (606) is fixedly connected to one side surface of the third bracket (406). A fifth bracket (608) is sleeved on the outer ring surface of the second connecting shaft (604). One side surface of the fifth bracket (608) is connected to one side surface of the support frame (2).

10. The automatically drying, grading, and grinding equipment for peanut flour production according to claim 1, characterized in that: A dust collection box (7) is connected to the upper surface of the base (1), and the dust collection box (7) is located directly below the outer roller (407). A material collection box (8) is connected to the upper surface of the base (1), and the material collection box (8) is located directly below the discharge ports of the inner roller (402) and the outer roller (407).

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