Hazelnut oligopeptide extraction and separation structure and extraction method

Abstract

The invention provides a hazelnut oligopeptide extraction and separation structure and an extraction method, and relates to the technical field of hazelnut oligopeptide extraction.The hazelnut oligopeptide extraction and separation structure comprises a grinding sleeve connected to a sealing disc in a sealed mode, a limiting sleeve is coaxially installed on the sealing disc, a middle sleeve is installed on the limiting sleeve, and a plurality of follow-up shafts are installed in the middle sleeve; the extraction and separation structure comprises a grinding sleeve, a plurality of servo shafts are arranged on the grinding sleeve, a conical roller is rotationally mounted on each servo shaft, a round roller is coaxially mounted on each conical roller, a shrinkage groove is formed in the inner wall of the grinding sleeve, and a plurality of sieve holes are formed in the shrinkage groove at equal intervals. The two working procedures of grinding and crushing and extraction and separation which are originally separated are organically combined in one device, the integrated design solves the problem that raw materials need to be transferred among different devices in a traditional process, and continuous treatment from raw material input to product extraction is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hazelnut oligopeptide extraction, and more particularly to a hazelnut oligopeptide extraction and separation structure and an extraction method. Background Art

[0002] In the current food and nutritional supplement industry, hazelnut oligopeptides have attracted much attention due to their unique biological activity and nutritional value. However, their extraction and separation process has its technical defects. The traditional hazelnut oligopeptide extraction and separation technology adopts a step-by-step processing method, that is, the hazelnut raw materials are first physically crushed and ground by special crushing equipment to be processed into fine particles or powder suitable for subsequent processing; then the crushed material is transferred to another special equipment for filtration and separation. The two processes not only increase the transfer link of intermediate materials, but also cause the entire production line to occupy too much space and increase equipment investment costs. At the same time, the materials face risks such as oxidation, contamination and loss of active ingredients during the transfer process, which seriously affects the quality and extraction efficiency of the final product.

[0003] More importantly, this separation process puts higher technical requirements on production operators and increases the complexity of production management. Operators need to master the operating skills of two sets of equipment at the same time. In actual production, there is often a mismatch in the processing capabilities between the two equipment, resulting in an uncoordinated production rhythm. Intermediate materials need to be temporarily stored, which not only extends the production cycle and reduces production efficiency, but may also affect the biological activity of intermediate materials due to prolonged exposure to the air. In addition, the maintenance, cleaning and debugging of the two sets of equipment are also relatively cumbersome, which increases production downtime and maintenance costs. Especially for small and medium-sized production enterprises, this separation process not only raises the production threshold, but also increases operating costs, restricting the widespread application and market promotion of hazelnut oligopeptide products. Summary of the Invention

[0004] (1) Technical problems solved In response to the problems existing in the prior art, the present invention provides a hazelnut oligopeptide extraction and separation structure and extraction method to solve the technical problems mentioned in the background technology.

[0005] (2) Technical solution To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hazelnut oligopeptide extraction and separation structure, comprising a fixed sealing disk; further comprising a crushing mechanism, the crushing mechanism comprising a grinding sleeve sealedly connected to the sealing disk, a limiting sleeve coaxially installed on the sealing disk, an intermediate sleeve installed on the limiting sleeve, a plurality of follower shafts installed in the intermediate sleeve, each of the follower shafts is rotatably mounted with a conical roller, a round roller is coaxially installed on the conical roller, a contraction groove is provided on the inner wall of the grinding sleeve, and a plurality of sieve holes are equidistantly provided in the contraction groove, a plurality of fitting grooves corresponding to the conical roller are provided on the limiting sleeve, and the conical roller and the round roller are fitted in the fitting groove; further comprising a filtering mechanism, the filtering mechanism comprising a discharge sleeve fixedly mounted on the sealing disk, the upper end of the discharge sleeve being sleeved on the grinding sleeve, and a plurality of feed pipes are connected and installed on the discharge sleeve.

[0006] Preferably, the crushing mechanism further comprises a fixedly arranged reducer, a motor is mounted on the reducer, a transmission shaft is mounted on the protruding end of the reducer, the transmission shaft is connected to the intermediate sleeve, a bearing is mounted on the transmission shaft, and a plurality of the round rollers are pressed on the bearings.

[0007] Preferably, a connecting plate is installed on the reducer, a plurality of bottom sleeves are installed on the connecting plate at equal intervals, and a plurality of vertical rods corresponding to the bottom sleeves are installed on the grinding sleeve.

[0008] Preferably, a tension spring is installed at the lower end of each vertical rod, an internal rod is installed on each tension spring, the internal rod is slidably connected in the bottom sleeve, a plurality of tightening grooves are provided on the inner wall of the bottom sleeve, a friction block is slidably connected in each tightening groove, and the plurality of friction blocks respectively abut against the side walls of the internal rod.

[0009] Preferably, a pull rope is installed at the lower end of each friction block, a baffle is installed at the lower end of the plurality of pull ropes, and a synchronization disk is fitted on the plurality of baffles.

[0010] Preferably, a push spring is sleeved and installed on the outside of each pull rope, one end of the push spring is connected to the friction block, and the other end of the push spring is connected to the bottom sleeve, and a handle is coaxially installed at the lower end of the internal rod.

[0011] Preferably, the filtering mechanism further comprises a fixing sleeve mounted on the plurality of the feed pipes, a filtering barrel is threadedly mounted on each of the fixing sleeves, and a water outlet pipe is mounted on each of the filtering barrels.

[0012] Preferably, the plurality of water outlet pipes are respectively connected to external collection equipment.

[0013] Preferably, a water inlet pipe is connected and installed on the side wall of each feed pipe, and the water inlet pipe is connected to external equipment.

[0014] The present invention provides a method for extracting hazelnut oligopeptides, comprising the following steps: Equipment preparation and grinding stage Before use, first confirm that all parts of the equipment are in good condition and install a suitable grinding sleeve. The sieve size and contraction groove slope of the grinding sleeve should be selected according to the required hazelnut powder particle size. Start the motor to drive the reducer to work, the drive shaft begins to rotate and drives the multiple conical rollers in the middle sleeve to rotate, and the hazelnut raw materials to be processed are continuously put into the grinding sleeve. The raw materials gradually fall under the action of gravity. First, they encounter the rotating conical rollers on the upper part of the grinding sleeve for preliminary crushing, and then enter the middle area for further refined grinding. Finally, fine grinding is completed in the lower area. After the ground material particles reach a specific size, they are discharged through the sieve holes on the inner wall of the grinding sleeve, completing the grinding stage.

[0015] Extraction and separation stage The ground hazelnut powder is discharged into the discharge sleeve below through the sieve holes and is diverted into each filter barrel through multiple feed pipes. At this time, the extraction solvent is injected into the filter barrel through the water inlet pipe. The temperature, pH value and concentration of the solvent can be adjusted as needed to optimize the extraction efficiency of the oligopeptide. The solvent is in full contact with the ground hazelnut powder in the filter barrel, so that the oligopeptides in the hazelnut are fully dissolved in the solvent. After a certain period of extraction, the solution containing the oligopeptide is discharged and collected through the outlet pipe. Multiple cycles of extraction can be performed or new solvent can be replaced to continue extraction as needed until the oligopeptides in the hazelnut powder are fully extracted.

[0016] Equipment maintenance and adjustment stage After long-term use, the equipment needs to be cleaned and maintained. First, stop the motor and pull down the synchronous disk to make multiple friction blocks disengage the self-locking state at the same time. Then remove the grinding sleeve for cleaning or replacement. For the filtration system, you can remove the filter barrel by unscrewing the fixed sleeve to remove the accumulated slag inside to avoid blockage and affect the subsequent use efficiency. If you need to adjust the grinding particle size, you can choose to replace the grinding sleeve of different specifications; if you need to optimize the extraction effect, you can adjust the solvent type, temperature or number of cycles. After the equipment is cleaned, reinstall the grinding sleeve. Simply insert the internal rod into the bottom sleeve and pull the handle down to activate the self-locking mechanism to complete the installation and ensure the sealing effect, ready for the next round of production.

[0017] (3) Beneficial effects Compared with the existing technology, the present invention provides a hazelnut oligopeptide extraction and separation structure and extraction method, which has the following beneficial effects: The technological innovation of the hazelnut oligopeptide extraction and separation structure lies in its integrated design, which organically combines the two originally separate processes of grinding and crushing and extraction and separation into one device. This integrated design solves the problem of the need to transfer raw materials between different equipment in traditional processes, and realizes continuous processing from raw material input to product extraction. The grinding and crushing mechanism at the top of the equipment is seamlessly connected with the filtering and extraction mechanism at the bottom. After precise grinding, the raw materials are directly discharged into the filter barrel through the sieve holes for subsequent extraction and separation, without the need for intermediate transfer links. This process optimization not only significantly shortens the production cycle and improves production efficiency, but also minimizes the oxidation, contamination and loss of active ingredients that may occur in the raw materials during the transfer process, thereby ensuring the extraction quality and biological activity of hazelnut oligopeptides.

[0018] The equipment adopts a multi-stage progressive grinding structure to achieve control of the particle size of hazelnut raw materials. A conical gradient contraction groove is designed inside the grinding sleeve, which forms a grinding channel with a gradually decreasing spacing from top to bottom with multiple rotating conical rollers. When the raw material enters the grinding sleeve, it is first preliminarily crushed in the upper area, and then gradually falls under the action of gravity, and passes through the middle and lower areas in turn for finer grinding. In particular, the design of the conical roller forms a changing grinding force between it and the contraction groove. The upper area is mainly coarse crushing, the middle area is fine grinding, and the lower area is finally fine grinding. This progressive grinding process avoids the problem of over-grinding or insufficient grinding of raw materials caused by a single grinding force in traditional equipment, ensuring the uniformity and consistency of the final particle size. At the same time, the sieve holes opened on the inner wall of the grinding sleeve are also gradually denser from top to bottom, ensuring that materials of different particle sizes can be discharged immediately after meeting the requirements, avoiding the loss of nutrients caused by excessive grinding.

[0019] The equipment is equipped with an efficient and convenient grinding sleeve quick-change system, which improves the flexibility, adaptability and ease of use of the equipment. Through the unique synchronization disk, baffle, pull rope and friction block linkage mechanism, the operator only needs to pull the synchronization disk to release the self-locking state of multiple fixed points at the same time, and easily complete the removal of the grinding sleeve. When installing a new grinding sleeve, just insert the internal rod into the bottom sleeve and activate the friction self-locking mechanism by pulling the handle to complete the installation and ensure the sealing effect. This quick-change system makes it possible to adapt to different grinding needs by simply replacing grinding sleeves with different screen hole specifications and shrinkage groove inclinations, without adjusting or replacing the entire equipment.

[0020] In summary, this innovatively designed hazelnut oligopeptide extraction and separation structure solves the problems of low efficiency, unstable quality, complex operation, and high cost in traditional separation processes, and provides a practical technical solution for the efficient extraction and separation of hazelnut oligopeptides, which has significant economic benefits and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a hazelnut oligopeptide extraction and separation structure and extraction method of the present invention; Figure 2 Schematic diagram of the structure of the grinding sleeve and the motor in the present invention; Figure 3 Schematic diagram of the structure of the grinding sleeve and the discharge sleeve in the present invention; Figure 4 Schematic diagram of the structure of the discharge sleeve and the fixed sleeve in the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the grinding sleeve of the present invention; Figure 6 Schematic diagram of the explosion structure of the limiting sleeve and the sealing disk in the present invention; Figure 7 Schematic diagram of the structure of the grinding sleeve and the synchronous disc in the present invention; Figure 8 It is a schematic cross-sectional view of the bottom cover and the handle in the present invention; Figure 9 It is a schematic cross-sectional structural diagram of the bottom sleeve in the present invention.

[0022] In the figure: 11, sealing disk; 21, grinding sleeve; 22, limiting sleeve; 23, intermediate sleeve; 24, follower shaft; 25, tapered roller; 26, round roller; 27, shrinkage groove; 28, sieve hole; 29, fitting groove; 31, discharge sleeve; 32, feed pipe; 33, fixing sleeve; 34, filter barrel; 35, outlet pipe; 36, inlet pipe; 210, reducer; 211, motor; 212, transmission shaft; 213, bearing; 214, connecting plate; 215, bottom sleeve; 216, vertical rod; 217, tension spring; 218, inner rod; 219, tightening groove; 220, friction block; 221, pull rope; 222, baffle; 223, synchronization disk; 224, push spring; 225, handle. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0026] See also Figures 1 to 9 A hazelnut oligopeptide extraction and separation structure includes a fixed sealing disk 11; a crushing mechanism, which includes a grinding sleeve 21 sealed and connected to the sealing disk 11; a limiting sleeve 22 is coaxially mounted on the sealing disk 11; an intermediate sleeve 23 is mounted on the limiting sleeve 22; a plurality of follower shafts 24 are mounted in the intermediate sleeve 23; a conical roller 25 is rotatably mounted on each follower shaft 24; a round roller 26 is coaxially mounted on the conical roller 25; a contraction groove 27 is provided on the inner wall of the grinding sleeve 21, and the contraction groove 27 is provided on the inner wall of the grinding sleeve 21; a ... A plurality of sieve holes 28 are provided at equal intervals in the contraction groove 27, a plurality of fitting grooves 29 corresponding to the tapered rollers 25 are provided on the limiting sleeve 22, the tapered rollers 25 and the round rollers 26 fit in the fitting grooves 29, and the crushing mechanism further comprises a fixed reducer 210, a motor 211 is mounted on the reducer 210, a transmission shaft 212 is mounted on the protruding end of the reducer 210, the transmission shaft 212 is connected to the intermediate sleeve 23, a bearing 213 is mounted on the transmission shaft 212, and a plurality of round rollers 26 are pressed on the bearing 213. The reducer 210 is provided with a connecting plate 214, on which a plurality of bottom sleeves 215 are evenly spaced. The grinding sleeve 21 is provided with a plurality of vertical rods 216 corresponding to the bottom sleeves 215. A tension spring 217 is provided at the lower end of each vertical rod 216. An internal rod 218 is provided on each tension spring 217. The internal rod 218 is slidably connected to the bottom sleeve 215. A plurality of tightening grooves 219 are provided on the inner wall of the bottom sleeve 215. A friction block is slidably connected to each tightening groove 219. 220, multiple friction blocks 220 respectively abut against the side walls of the internal rod 218, and a pull rope 221 is installed at the lower end of each friction block 220, and a baffle 222 is installed at the lower end of the multiple pull ropes 221, and a synchronization disk 223 is fitted on the multiple baffles 222. A push spring 224 is installed on the outside of each pull rope 221, and one end of the push spring 224 is connected to the friction block 220, and the other end of the push spring 224 is connected to the bottom sleeve 215. A handle 225 is coaxially installed at the lower end of the internal rod 218.

[0027] Before the hazelnuts are separated and extracted, they need to be ground to meet the requirements. First, the raw materials are continuously passed into the grinding sleeve 21 through external equipment, and then enter between the contraction groove 27 and the limiting sleeve 22. At this time, the transmission shaft 212 is driven to rotate by the action of the motor 211 and the reducer 210. Since the limiting sleeve 22 is installed on the transmission shaft 212, it will drive multiple conical rollers 25 to rotate accordingly. Since the distance between the upper end of the conical roller 25 and the contraction groove 27 is large, and there is no sieve hole 28 in the contraction groove 27 at the upper end, then with the synchronous rotation of the conical roller 25 and the limiting sleeve 22, The conical roller 25 is driven to press on the hazelnuts and crush them. After the first crushing, the diameter will become smaller and then fall to the lower end. Then the distance between the lower end of the conical roller 25 and the contraction groove 27 is smaller. The conical roller 25 continues to grind the hazelnuts until they are ground to the position of the corresponding sieve hole 28. The hazelnut particles that meet the diameter are discharged into the discharge sleeve 31 through the sieve hole 28, and then discharged into the filter barrel 34 through the feed pipe 32 for extraction and separation, thereby completing the separation process. When the final grinding effect needs to be changed, the adjustment can be completed by replacing the grinding sleeve 21 with different sieve holes 28 and contraction grooves 27 with different slopes.

[0028] When the existing grinding sleeve 21 needs to be unlocked, the synchronization disk 223 is pulled downward. Since multiple synchronization disks 223 are respectively stuck on the baffle 222, they will move downward synchronously. Multiple pull ropes 221 are connected to the baffle 222, thereby driving multiple friction blocks 220 to slide downward, and the friction blocks 220 expand along the contraction groove 27, thereby unlocking the self-locking between the internal rod 218 and the friction block 220. At this time, the grinding sleeve 21 can be removed.

[0029] When a new grinding sleeve 21 needs to be installed, the internal rod 218 on the new grinding sleeve 21 is first inserted into the bottom sleeve 215, and the grinding sleeve 21 is sealed and connected to the sealing disk 11. At this time, since the internal rod 218 passes through the bottom sleeve 215, multiple friction blocks 220 are in contact with the side wall of the internal rod 218. Due to the angle of the contraction groove 27, the friction blocks 220 and the internal rod 218 can be self-locked and fixed. At this time, the internal rod 218 is just inserted into the bottom sleeve 215 and no sealing force has been applied. At this time, the internal rod 218 is pulled downward by pulling the handle 225, and the internal rod 218 moves downward accordingly. Due to the action of the push spring 224, the friction block 220 will always fit on the side wall of the internal rod 218 and will not move accordingly. Therefore, the two will be displaced. As the tension spring 217 is continuously pulled, tension will be generated, thereby generating a corresponding sealing force, thereby completing the fixing process. Multiple handles 225 are pulled downward to complete the fixing process and apply effective sealing force to ensure the sealing effect.

[0030] The filtering mechanism includes a discharge sleeve 31 fixedly mounted on the sealing disc 11, the upper end of the discharge sleeve 31 is sleeved on the grinding sleeve 21, and a plurality of feed pipes 32 are connected and installed on the discharge sleeve 31. The filtering mechanism also includes a fixed sleeve 33 installed on the plurality of feed pipes 32, each fixed sleeve 33 is threadedly mounted with a filter barrel 34, each filter barrel 34 is respectively installed with an outlet pipe 35, and the plurality of outlet pipes 35 are respectively connected to external collection equipment, and a water inlet pipe 36 is respectively installed on the side wall of each feed pipe 32, and the water inlet pipe 36 is connected to external equipment.

[0031] The ground hazelnut powder will flow into the filter barrel 34, and then the corresponding solvent will be introduced through the water inlet pipe 36 to complete the extraction and separation process, and then discharged through the water outlet pipe 35 to complete the extraction and separation process. After long-term use, the filter barrel 34 can be replaced to avoid clogging of the slag, thereby completing the extraction process.

[0032] In all the schemes mentioned above, the connection between the two parts can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be described here one by one. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hazelnut oligopeptide extraction and separation structure, comprising a fixedly arranged sealing disk (11); characterized in that: The invention also includes a crushing mechanism, wherein the crushing mechanism includes a grinding sleeve (21) sealedly connected to the sealing disk (11), a limiting sleeve (22) coaxially mounted on the sealing disk (11), an intermediate sleeve (23) mounted on the limiting sleeve (22), a plurality of follower shafts (24) mounted in the intermediate sleeve (23), a tapered roller (25) rotatably mounted on each follower shaft (24), a round roller (26) coaxially mounted on the tapered roller (25), and a contraction groove (27) opened on the inner wall of the grinding sleeve (21). A plurality of sieve holes (28) are provided at equal intervals in the shrinkage groove (27), a plurality of fitting grooves (29) corresponding to the tapered roller (25) are provided on the limiting sleeve (22), and the tapered roller (25) and the round roller (26) fit in the fitting grooves (29); and a filtering mechanism is also included, the filtering mechanism comprising a discharge sleeve (31) fixedly mounted on the sealing disk (11), the upper end of the discharge sleeve (31) being sleeved on the grinding sleeve (21), and a plurality of feed pipes (32) being connected and mounted on the discharge sleeve (31).

2. A hazelnut oligopeptide extraction and separation structure according to claim 1, characterized in that: The crushing mechanism further comprises a fixedly arranged speed reducer (210), a motor (211) being mounted on the speed reducer (210), a transmission shaft (212) being mounted on the protruding end of the speed reducer (210), the transmission shaft (212) being connected to the intermediate sleeve (23), a bearing (213) being mounted on the transmission shaft (212), and a plurality of the round rollers (26) being pressed on the bearing (213).

3. a hazelnut oligopeptide extraction and separation structure according to claim 2, is characterized in that: A connecting disk (214) is mounted on the reducer (210), a plurality of bottom sleeves (215) are mounted on the connecting disk (214) at equal intervals, and a plurality of vertical rods (216) corresponding to the bottom sleeves (215) are mounted on the grinding sleeve (21).

4. A hazelnut oligopeptide extraction and separation structure according to claim 3, characterized in that: A tension spring (217) is installed at the lower end of each vertical rod (216), and an internal rod (218) is installed on each tension spring (217). The internal rod (218) is slidably connected in the bottom sleeve (215). A plurality of tightening grooves (219) are provided on the inner wall of the bottom sleeve (215). A friction block (220) is slidably connected in each tightening groove (219), and the plurality of friction blocks (220) respectively abut against the side wall of the internal rod (218).

5. A hazelnut oligopeptide extraction and separation structure according to claim 4, characterized in that: A pull rope (221) is installed at the lower end of each friction block (220), a baffle (222) is installed at the lower end of a plurality of the pull ropes (221), and a synchronization disk (223) is fitted on the plurality of the baffles (222).

6. A hazelnut oligopeptide extraction and separation structure according to claim 5, characterized in that: A push spring (224) is sleeved and installed on the outside of each pull rope (221), one end of the push spring (224) is connected to the friction block (220), and the other end of the push spring (224) is connected to the bottom sleeve (215). A handle (225) is coaxially installed at the lower end of the internal rod (218).

7. A hazelnut oligopeptide extraction and separation structure according to claim 6, characterized in that: The filtering mechanism further comprises a fixing sleeve (33) mounted on the plurality of feed pipes (32), a filtering barrel (34) being threadedly mounted on each fixing sleeve (33), and a water outlet pipe (35) being mounted on each filtering barrel (34).

8. A hazelnut oligopeptide extraction and separation structure according to claim 7, characterized in that: The plurality of water outlet pipes (35) are respectively connected to external collection equipment.

9. A hazelnut oligopeptide extraction and separation structure according to claim 8, characterized in that: A water inlet pipe (36) is connected and installed on the side wall of each feed pipe (32), and the water inlet pipe (36) is connected to external equipment.

10. A method for extracting oligopeptides from hazelnuts, using the hazelnut oligopeptide extraction and separation structure according to claim 9, characterized in that: The following steps are involved: Equipment preparation and grinding stage Before use, first confirm that all parts of the equipment are intact and install a suitable grinding sleeve (21). The size of the sieve hole (28) of the grinding sleeve (21) and the slope of the contraction groove (27) should be selected according to the required hazelnut powder particle size. Start the motor (211) to drive the reducer (210) to work, and the transmission shaft (212) starts to rotate and drives the multiple conical rollers (25) in the middle sleeve (23) to rotate. The hazelnut raw materials to be processed are continuously put into the grinding sleeve (21). The raw materials gradually fall under the action of gravity. First, they encounter the rotating conical rollers (25) on the upper part of the grinding sleeve (21) for preliminary crushing, and then enter the middle area for further fine grinding. Finally, fine grinding is completed in the lower area. After the ground material particles reach a specific size, they are discharged through the sieve hole (28) on the inner wall of the grinding sleeve (21), completing the grinding stage. Extraction and separation stage The ground hazelnut powder is discharged into the discharge sleeve (31) below through the sieve hole (28), and is diverted into each filter barrel (34) through multiple feed pipes (32). At this time, the extraction solvent is injected into the filter barrel (34) through the water inlet pipe (36). The temperature, pH value and concentration of the solvent can be adjusted as needed to optimize the extraction efficiency of the oligopeptides. The solvent is fully in contact with the ground hazelnut powder in the filter barrel (34) so that the oligopeptides in the hazelnut are fully dissolved in the solvent. After a certain period of extraction, the solution containing the oligopeptides is discharged and collected through the outlet pipe (35). Multiple cycles of extraction or replacement of new solvent can be performed as needed until the oligopeptides in the hazelnut powder are fully extracted. Equipment maintenance and adjustment stage After long-term use, the equipment needs to be cleaned and maintained. First, stop the motor (211) and pull down the synchronous disk (223) to make multiple friction blocks (220) disengage from the self-locking state at the same time. Then remove the grinding sleeve (21) for cleaning or replacement. For the filtration system, the filter barrel (34) can be disassembled by unscrewing the fixed sleeve (33) to remove the accumulated slag inside to avoid blockage that affects the subsequent use efficiency. If the grinding particle size needs to be adjusted, a grinding sleeve (21) of different specifications can be selected. If the extraction effect needs to be optimized, the solvent type, temperature or number of cycles can be adjusted. After the equipment is cleaned, reinstall the grinding sleeve (21). Simply insert the internal rod (218) into the bottom sleeve (215) and pull down the handle (225) to activate the self-locking mechanism to complete the installation and ensure the sealing effect, ready for the next round of production.

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