Strong-aroma squeezed rapeseed oil processing device

Abstract

The invention relates to the technical field of squeezed rapeseed oil processing, in particular to a strong-fragrance squeezed rapeseed oil processing device which comprises an outer frame, a stirring mechanism, a squeezing mechanism, a squeezing mechanism, a squeezing mechanism, a squeezing mechanism and a squeezing mechanism. The heating assemblies are arranged on the two sides of the heating frame; the filter screen is obliquely arranged and located below the discharging pipe, and vibration assemblies are installed on the left side wall and the right side wall of the filter screen; the driving device is fixedly installed on the outer wall of one side of the outer frame, the output end of the driving device is located in the outer frame, and multiple sets of rotating rollers are installed at the output end of the driving device; and the crushing mechanism is arranged below the filter screen. According to the device, on one hand, the rapeseeds can be rapidly cooled, aroma components of the rapeseeds are prevented from being volatilized, on the other hand, the rapeseeds with different particle sizes can be classified, subsequent single smashing is facilitated, and the quality of squeezed oil is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of pressed rapeseed oil processing, in particular to a device for processing rich-flavor pressed rapeseed oil. Background Art

[0002] Rapeseed oil is what we commonly call rapeseed oil, also known as rapeseed oil, coriander oil, canola oil, sesame oil, and canola oil. It is an edible oil squeezed from rapeseed and is one of the main edible oils in my country. Rapeseed oil needs to be crushed during the processing. In order to improve the quality of the oil, the rapeseed needs to be crushed separately according to particles of different sizes to ensure the crushing effect, thereby improving the quality of the rapeseed oil after pressing.

[0003] For example, a patent application document with Chinese patent publication number CN217042830U discloses a rapeseed crushing device for rapeseed oil production and processing, the device includes a tank body, the right end of the top of the tank body is fixedly connected to a feed pipe, and a filtering component and a crushing component are arranged inside the tank body. By arranging the filtering component inside the tank body, the material can be quickly filtered through the filtering component after entering the tank body to avoid impurities being mixed with the material and then crushed, and the filtering and crushing are integrated into the tank body. However, the device still has the following problems during use, that is, it can only screen rapeseed and impurities, and cannot classify different particle sizes to facilitate subsequent single crushing. Crushing rapeseed of different sizes together is easy to cause uneven crushing, larger particles are crushed, and smaller particles are not crushed, thereby affecting the quality of the oil after pressing. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a rich and fragrant rapeseed oil processing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A fragrant pressed rapeseed oil processing device comprises an outer frame, a heating frame is fixedly installed on the upper part of the outer frame, a feeding pipe connected to the interior of the heating frame is fixedly installed on the top wall of the outer frame, a discharging pipe connected to the interior of the heating frame is fixedly installed at the lower end of the heating frame, and further comprises: A stirring mechanism, which is installed on the outer frame and is used to stir the material inside the heating frame; Heating components, which are arranged on both sides of the heating frame and are used to heat the materials inside the heating frame; A filter screen, the filter screen is tilted and located below the discharge pipe, and vibration components are installed on the left and right side walls of the filter screen; A driving device, wherein the driving device is fixedly mounted on an outer wall of one side of the outer frame, an output end of the driving device is located inside the outer frame and is equipped with a plurality of groups of rotating rollers, the plurality of groups of rotating rollers are all located below the filter screen and are arranged obliquely, and the inclination direction of the plurality of groups of rotating rollers is consistent with the filter screen, a cavity is arranged inside the rotating roller, a blower fan is fixedly mounted inside the cavity, and a plurality of air holes connected to the interior of the rotating roller are evenly distributed on the side wall of the rotating roller; The crushing mechanism is arranged below the filter screen, and a collecting frame located at the lower end of the filter screen is arranged on one side of the crushing mechanism, and the collecting frame is communicated with the inside of the crushing mechanism.

[0006] Preferably, the heating frame is wider at the top and narrower at the bottom.

[0007] Preferably, the stirring mechanism includes a second motor fixedly mounted on the top of the outer frame, the output end of the second motor is keyed to a connecting rod, the lower end of the connecting rod extends into the interior of the heating frame after rotating through the top wall of the outer frame, and multiple stirring rods are fixedly connected from top to bottom.

[0008] Preferably, the heating assembly comprises a microwave emitter fixedly mounted on the inner wall of the outer frame, and the working end of the microwave emitter faces one side of the heating frame.

[0009] Preferably, the vibration assembly comprises a vibration device fixedly mounted on the inner side wall of the outer frame, and the working end of the vibration device is connected to the left and right side walls of the filter screen.

[0010] Preferably, a blower fixedly mounted on the inner wall of the outer frame is arranged above the filter screen, and the output end of the blower faces the outlet side below the discharge pipe.

[0011] Preferably, a liquid storage tank fixedly mounted on the inner wall of the outer frame is provided on one side below the heating frame, and the diluted ethanol solution is stored in the liquid storage tank. A plurality of atomizing nozzles are installed on the liquid storage tank, and the output end of the atomizing nozzle faces the filter screen side.

[0012] Preferably, the crushing mechanism comprises a crushing frame placed on the inner bottom wall of the outer frame, two groups of crushing rollers are installed inside the crushing frame, and the crushing rollers are driven by two groups of first motors fixedly installed on the side walls of the outer frame.

[0013] Preferably, a feeding frame connected to the interior of the collecting frame is provided on one side of the collecting frame close to the crushing frame, and the feeding frame is inclined and the lower end of the feeding frame is located above the crushing roller.

[0014] Preferably, a material drop opening is provided on the bottom wall of the crushing frame, a notch corresponding to the position of the material drop opening is provided on the bottom wall of the outer frame, and a storage frame corresponding to the position of the notch is placed on the inner bottom wall of the outer frame.

[0015] Compared with the prior art, the advantages of the present invention are: 1. In the present application, by setting up a blower, an atomizing nozzle, a filter screen and a vibration device, the wind blown by the blower can timely cool the rapeseed falling from the discharge pipe. At the same time, when the filter screen throws the rapeseed up, the wind of the blower can also increase the aerial time of the rapeseed, and the rapeseed can be more evenly exposed to the diluted ethanol droplets in the air. The ethanol droplets evaporate rapidly on the surface of the rapeseed, quickly taking away the temperature of the rapeseed surface, preventing the aroma components of the rapeseed from volatilizing, and enhancing the cooling effect. In addition, the ethanol treatment significantly affects the relative content of flavor compounds in the rapeseed protein isolate and the overall flavor characteristics.

[0016] 2. In the present application, by setting the rotating roller, air holes and blower fan, when rapeseed of appropriate size falls from the filter, the rapeseed will be lightly squeezed by the filter and the rotating roller for a short time due to the high-frequency up and down reciprocating motion of the filter, thereby causing some cracks in the outer shell and internal cell structure of the rapeseed. On the one hand, it is beneficial to improve its subsequent crushing efficiency, and on the other hand, it can also make the oil distribution inside the rapeseed more even, which is beneficial to the outflow of oil during the oil pressing process. The gas blown out from the air holes can cool the rapeseed on the one hand to ensure that the aroma substances will not volatilize, and on the other hand, it can also protect the rapeseed by blowing away the lightly squeezed rapeseed to prevent the rapeseed from being excessively squeezed and adhering to the rotating roller. At the same time, the presence of the rotating roller slows down the feeding speed in the crushing frame to prevent a large amount of rapeseed from entering at once, resulting in a decrease in the crushing efficiency and crushing effect of the crushing roller.

[0017] 3. The present application classifies the particle size of rapeseed by means of a filter screen. The rapeseed with smaller particle size is first crushed by a crushing roller, and then the rapeseed with larger particle size is crushed by a crushing roller. On the one hand, it avoids the blockage of the particle size between the two sets of crushing rollers by larger particles of rapeseed. On the other hand, it avoids the rapeseed that cannot be crushed at one time due to its large size and needs to be crushed repeatedly, thereby affecting the overall crushing speed. At the same time, after the rapeseed of appropriate size and the rapeseed with larger particles are crushed separately, their particle sizes are more uniform, which can provide more consistent pressing conditions during the oil extraction process.

[0018] In summary, through the setting of the above-mentioned structure, the present application can, on the one hand, quickly cool the rapeseed to prevent the volatilization of the aroma components of the rapeseed, and on the other hand, classify rapeseed of different particle sizes to facilitate subsequent single crushing, thereby ensuring the quality of the oil after pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall back structure of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0020] Figure 2This is a schematic diagram of the internal structure of the outer frame of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0021] Figure 3 This is a schematic diagram of the connecting rod and stirring rod structure of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of a filter screen and a vibration device of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of a blower and a liquid storage tank of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0024] Figure 6 This is a schematic diagram of the crushing frame and crushing roller structure of a rich-flavor pressed rapeseed oil processing device proposed by the present invention.

[0025] In the figure: 1 outer frame, 2 storage frame, 3 feeding pipe, 4 driving device, 5 first motor, 6 second motor, 7 heating frame, 8 microwave transmitter, 9 connecting rod, 10 stirring rod, 11 discharging pipe, 12 blower, 13 liquid storage tank, 14 atomizing nozzle, 15 filter, 16 vibration device, 17 rotating roller, 18 air vent, 19 blowing fan, 20 collecting frame, 21 unloading frame, 22 crushing frame, 23 crushing roller. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figures 1 to 6 A fragrant pressed rapeseed oil processing device comprises an outer frame 1, a plurality of supporting columns are fixedly installed on the lower end surface of the outer frame 1, a heating frame 7 is fixedly installed on the upper part of the inner part of the outer frame 1, the heating frame 7 is wide at the top and narrow at the bottom, a discharge pipe 11 connected with the inner part of the heating frame 7 is fixedly installed on the lower end of the heating frame 7, a second motor 6 fixedly installed on the top of the outer frame 1 is arranged directly above the heating frame 7, the output end of the second motor 6 is keyed to a connecting rod 9, the lower end of the connecting rod 9 extends to the inner part of the heating frame 7 after rotating through the top wall of the outer frame 1, and a plurality of stirring rods 10 are fixedly connected from top to bottom, a feed pipe 3 connected with the inner part of the outer frame 1 is fixedly installed on the top wall of the outer frame 1, and the lower outlet of the feed pipe 3 is located above the inner part of the heating frame 7, so that when the rapeseed enters the inner part of the heating frame 7 through the feed pipe 3, the second motor 6 is started to rotate through the connecting rod 9, thereby stirring the rapeseed.

[0028] In order to heat the rapeseed during the stirring process, microwave emitters 8 fixedly mounted on the inner wall of the outer frame 1 are arranged on both sides of the heating frame 7. The microwave emitter 8 is of prior art and its working end faces one side of the heating frame 7. Its specific structural design is not described here. The rapeseed can be evenly heated by the arrangement of the microwave emitter 8.

[0029] A filter screen 15 placed at an angle is arranged below the discharge pipe 11, and a vibration device 16 is installed on the left and right side walls of the filter screen 15. The vibration device 16 is fixedly installed on the side wall of the outer frame 1, and it is a prior art. The specific structural design is not repeated here. A blower 12 fixedly installed on the inner wall of the outer frame 1 is arranged above the filter screen 15, and the output end of the blower 12 faces the outlet side below the discharge pipe 11, so that when the rapeseed is thrown up by the filter screen 15, the wind blown out by the blower 12 can cool the rapeseed on the one hand, and increase the air time of the rapeseed on the other hand.

[0030] A liquid storage tank 13 fixedly mounted on the inner wall of the outer frame 1 is provided on one side below the heating frame 7. The diluted ethanol solution is stored in the liquid storage tank 13. A plurality of atomizing nozzles 14 are installed on the liquid storage tank. The output end of the atomizing nozzle 14 faces the filter 15. Through the setting of the atomizing nozzle 14, the ethanol solution in the liquid storage tank 13 can be sprayed out in the form of mist so as to fully contact the rapeseed thrown into the air. The ethanol droplets evaporate quickly on the surface of the rapeseed, quickly take away the temperature of the surface of the rapeseed, prevent the aroma components of the rapeseed from volatilizing, and enhance the cooling effect.

[0031] A driving device 4 is fixedly installed on the outer wall of one side of the outer frame 1. The output end of the driving device 4 is located inside the outer frame 1 and is installed with multiple groups of rotating rollers 17. The multiple groups of rotating rollers 17 are all located below the filter screen 15 and are arranged obliquely, and the inclination direction of the multiple groups of rotating rollers 17 is consistent with the filter screen 15. The directions of the multiple groups of rotating rollers 17 during rotation are consistent, and they can rotate clockwise or counterclockwise as needed. A cavity is provided inside the rotating roller 17, and a blower fan 19 is fixedly installed inside the cavity. Multiple air holes 18 connected to the interior are evenly distributed on the side walls of the rotating roller 17, so that when the blower fan 19 is running, outside air can be sucked in from one side of the cavity and then discharged through the air holes 18. It should be noted that the power of the blower 12 should not be too large to avoid the wind blown out from the air holes 18 blowing the rapeseed away, but the rapeseed can be displaced to a certain extent.

[0032] A crushing frame 22 placed on the inner bottom wall of the outer frame 1 is arranged below the filter screen 15, and two groups of crushing rollers 23 are installed inside the crushing frame 22. The crushing rollers 23 are driven by two groups of first motors 5 fixedly installed on the side walls of the outer frame 1. A collecting frame 20 located at the lower end of the filter screen 15 is arranged on one side of the crushing frame 22, and a feeding frame 21 connected to the interior of the collecting frame 20 is arranged close to the crushing frame 22. The feeding frame 21 is inclined and its lower end is located above the crushing rollers 23, so that the rapeseed with larger particle size entering the collecting frame 20 can flow through the feeding frame 21 to the surface of the crushing rollers 23 to be crushed.

[0033] A material drop opening is provided on the bottom wall of the crushing frame 22, a notch corresponding to the position of the material drop opening is provided on the bottom wall of the outer frame, and a storage frame 2 corresponding to the position of the notch is placed on the inner bottom wall of the outer frame.

[0034] The specific working principle of the present invention is as follows: first start the microwave transmitter 8 to preheat the heating frame 7, ensure that the temperature in the heating frame 7 is about 150°C, fill the liquid storage tank 13 with diluted ethanol solution, start the second motor 6, drive the stirring rod 10 to rotate through the connecting rod 9, add the rapeseed raw material to be crushed into the heating frame 7 through the feed pipe 3, and the rapeseed is added to the heating frame 7, which is wide at the top and narrow at the bottom, and is evenly heated by microwaves, then evenly stirred by the stirring rod 10, and finally discharged from the narrow discharge pipe 11. The rapeseed is evenly heated for 5-7 seconds during the whole process. Such treatment can inactivate the enzyme inside the rapeseed without losing the aroma of the rapeseed.

[0035] Rapeseed itself contains a variety of enzymes, such as lipase and peroxidase. During the rapeseed crushing process, the cell structure is destroyed, these enzymes are released, and it becomes easier for them to contact substrates (such as oils, aroma precursors, etc.). Lipase catalyzes the hydrolysis of oils and produces free fatty acids, which may change the smell of rapeseed. Peroxidase accelerates the oxidation reaction, resulting in the destruction of aroma components, so these enzymes need to be inactivated in advance.

[0036] The rapeseed needs to be cooled down in time after being heated, otherwise the aroma substances inside will volatilize. Therefore, after coming out of the discharge pipe 11, the blower 12, the atomizing nozzle 14 and the vibration device are started, and the rapeseed falling on the filter 15 will be screened, and the rapeseed with a smaller diameter will fall from the filter 15, and the rapeseed with a larger diameter will enter the collection frame 20 at the lower end of the filter 15 for temporary storage. The vibration device 16 causes the filter 15 to produce high-frequency up and down reciprocating motion, and the rapeseed on the filter 15 will be thrown up and cooled by the blower 12 at the same time (the power of the blower here is moderate and will not be too large to blow the rapeseed away). The atomizing nozzle 14 sprays the diluted ethanol solution in a mist form, which contacts the rapeseed thrown in the air. Such a design has the following advantages.

[0037] First, the blower 12 is located above the filter 15 and is aligned with the outlet of the discharge pipe 11, so that the rapeseed can be cooled in time. At the same time, when the filter 15 throws the rapeseed up, the wind from the blower 12 can increase the air time of the rapeseed.

[0038] Second: the rapeseed's staying time in the air increases, and the rapeseed can be more evenly exposed to the diluted ethanol droplets in the air. The ethanol droplets evaporate quickly on the surface of the rapeseed, quickly taking away the temperature of the rapeseed surface, preventing the aroma components of the rapeseed from volatilizing, and enhancing the cooling effect.

[0039] Third: Ethanol treatment significantly affected the relative content of flavor compounds and the overall flavor characteristics in rapeseed protein isolate. This treatment not only weakened the pungent odor, but also enhanced the pleasant aroma, thus achieving a flavor enhancement effect.

[0040] Fourth: Low temperature environment can reduce the loss of volatile aroma components in rapeseed.

[0041] The driving device 4 is started to rotate the rotating roller 17; the blower fan 19 is started to allow gas to be ejected from the air vent 18. After rapeseeds of suitable size fall from the filter screen 15, the rapeseeds will be slightly squeezed by the filter screen 15 and the rotating roller 17 for a short time due to the high-frequency up-and-down reciprocating motion of the filter screen 15. This has the following advantages.

[0042] First, light squeezing before crushing can create some cracks in the outer shell and internal cell structure of the rapeseed. Just like squeezing a walnut gently to create cracks in the outer shell, these cracks help the subsequent crushing equipment to better act on the inside of the rapeseed, improving crushing efficiency. At the same time, light rolling can also make the oil inside the rapeseed more evenly distributed, which is conducive to the outflow of oil during the oil extraction process.

[0043] Second: In order to ensure a light squeeze, larger rapeseeds will not pass through the filter screen 15 and contact the rotating roller 17, but will directly enter the collection frame 20 for temporary storage.

[0044] Third: The air holes 18 will also spray gas to cool the rapeseed to ensure that the aroma substances will not volatilize.

[0045] Fourthly, the gas ejected from the air holes 18 also protects the rapeseeds by blowing away the slightly squeezed rapeseeds, thereby preventing the rapeseeds from being excessively squeezed and adhering to the rotating roller 17 .

[0046] Fifth, the existence of the rotating roller 17 slows down the feeding speed in the crushing frame 22, preventing a large amount of rapeseed from entering at once, which would reduce the crushing efficiency and crushing effect of the crushing roller 23.

[0047] Finally, the rapeseed entering the crushing roller 23 is crushed and enters the storage frame 2 at the bottom to prepare for subsequent oil pressing. After the rapeseed of appropriate size is crushed, the spacing of the crushing rollers 23 is adjusted, and the valve in the discharge frame 21 is opened to allow the larger particles of rapeseed to enter the crushing frame 22 for crushing. For the crushing roller 23, rapeseed of appropriate size can smoothly enter the gap between the rollers and be effectively crushed, but rapeseed of larger particles may block the gap, or cannot be crushed at one time due to its large size, and needs to be crushed repeatedly, thereby affecting the overall crushing speed; after the rapeseed of appropriate size and the larger particles of rapeseed are crushed separately, their particle sizes are more uniform, which can provide more consistent pressing conditions during the oil pressing process.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fragrant rapeseed oil processing device, comprising an outer frame (1), a heating frame (7) fixedly mounted on the upper part of the inner part of the outer frame (1), a feed pipe (3) connected to the inner part of the heating frame (7) fixedly mounted on the top wall of the outer frame (1), and a discharge pipe (11) connected to the inner part of the heating frame (7) fixedly mounted on the lower end of the heating frame (7), characterized in that: Also included are: A stirring mechanism, the stirring mechanism being mounted on the outer frame (1) and being used to stir the material inside the heating frame (7); Heating components, which are arranged on both sides of the heating frame (7) and are used to heat the material inside the heating frame; A filter screen (15), the filter screen (15) being arranged in an inclined manner and being located below the discharge pipe (11), and a vibration assembly being installed on the left and right side walls of the filter screen (15); A driving device (4), the driving device (4) being fixedly mounted on an outer wall of one side of the outer frame (1), the output end of the driving device (4) being located inside the outer frame (1) and being installed with a plurality of groups of rotating rollers (17), the plurality of groups of rotating rollers (17) being located below the filter screen (15) and being arranged in an inclined manner, and the inclination direction of the plurality of groups of rotating rollers (17) being consistent with the filter screen (15), the rotating roller (17) being provided with a cavity inside, a blower fan (19) being fixedly mounted inside the cavity, and a plurality of air holes (18) being evenly distributed on the side wall of the rotating roller (17) and being in communication with the interior thereof; A crushing mechanism, wherein the crushing mechanism is arranged below the filter screen (15), and a collecting frame (20) located at the lower end of the filter screen (15) is arranged on one side of the crushing mechanism, and the collecting frame (20) is communicated with the inside of the crushing mechanism.

2. The fragrant pressed rapeseed oil processing device according to claim 1, characterized in that: The heating frame (7) is arranged to be wide at the top and narrow at the bottom.

3. The fragrant pressed rapeseed oil processing device according to claim 1, characterized in that: The stirring mechanism comprises a second motor (6) fixedly mounted on the top of the outer frame (1); the output end of the second motor (6) is keyed to a connecting rod (9); the lower end of the connecting rod (9) extends into the interior of the heating frame (7) after rotating through the top wall of the outer frame (1), and is fixedly connected to a plurality of stirring rods (10) from top to bottom.

4. The rich aroma pressed rapeseed oil processing device according to claim 1, characterized in that: The heating assembly comprises a microwave emitter (8) fixedly mounted on the inner wall of the outer frame (1), wherein the working end of the microwave emitter (8) faces one side of the heating frame (7).

5. The fragrant pressed rapeseed oil processing device according to claim 1, characterized in that: The vibration assembly comprises a vibration device (16) fixedly mounted on the inner wall of the outer frame (1), wherein a working end of the vibration device (16) is connected to the left and right side walls of the filter screen (15).

6. The rich aroma pressed rapeseed oil processing device according to claim 1, characterized in that: A blower (12) fixedly mounted on the inner wall of the outer frame (1) is arranged above the filter screen (15), and the output end of the blower (12) faces the outlet side below the discharge pipe (11).

7. The fragrant pressed rapeseed oil processing device according to claim 1, characterized in that: A liquid storage tank (13) fixedly mounted on the inner wall of the outer frame (1) is provided on one side below the heating frame (7), wherein the diluted ethanol solution is stored in the liquid storage tank (13), and a plurality of atomizing nozzles (14) are mounted on the liquid storage tank, wherein the output ends of the atomizing nozzles (14) face toward the filter screen (15).

8. The rich and fragrant pressed rapeseed oil processing device according to claim 1, characterized in that: The crushing mechanism comprises a crushing frame (22) placed on the inner bottom wall of the outer frame (1), two groups of crushing rollers (23) are installed inside the crushing frame (22), and the crushing rollers (23) are driven by two groups of first motors (5) fixedly installed on the side walls of the outer frame (1).

9. The rich and fragrant pressed rapeseed oil processing device according to claim 8, characterized in that: A material discharge frame (21) is provided on one side of the collecting frame (20) close to the crushing frame (22) and is communicated with the interior of the collecting frame (20). The material discharge frame (21) is arranged in an inclined manner and its lower end is located above the crushing roller (23).

10. The rich and fragrant pressed rapeseed oil processing device according to claim 9, characterized in that: The bottom wall of the crushing frame (22) is provided with a material drop opening, the bottom wall of the outer frame is provided with a notch corresponding to the position of the material drop opening, and the inner bottom wall of the outer frame is provided with a storage frame (2) corresponding to the position of the notch.

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