Soil improvement material applying device

Abstract

The utility model discloses a soil improvement material application device, and relates to the technical field of soil improvement material application. Comprising a mixing frame; the feeding mechanism is arranged at the feeding pipe of the mixing frame; the anti-blocking mechanism is arranged at the bottom of the material mixing frame and is matched with the filtering holes in the bottom wall of the material mixing frame; the stirring mechanism is arranged in the mixing frame; according to the device, through a long-rod eccentric wheel, a first motor and a second spring, a dredging plate ascends and descends in a filter hole in a reciprocating mode and dredges materials blocked in the filter hole, the dredging plate which is integrally in a triangular shape better evacuates the materials blocked in the filter hole, through a sliding rod, a sliding barrel and the first spring, the materials blocked in the filter hole are pushed to be scattered, and the filtering efficiency is improved. In this way, the filtering holes are dredged in time, and rapid discharging of the filtering holes is guaranteed; the problem that in the prior art, the requirement for the uniformity of soil application and distribution after mobility improvement during field use cannot be met is solved.

Description

Technical Field

[0001] This utility model relates to the field of soil amendment material application technology, and in particular to a soil amendment material application device. Background Technology

[0002] Soil improvement mainly refers to the actions of modifying soil through physical, chemical, or microbial means. This involves mixing soil with appropriate soil conditioners or other materials to improve soil fertility or structure. During soil improvement, soil amendment application equipment is needed to ensure thorough mixing. In orchard soil improvement, this equipment typically involves crushing and mixing agricultural organic waste such as livestock manure and crop straw before applying it to the soil area. Earthworms then ingest the organic waste through their gizzards, and their unique enzymes transform the waste into nutrient-rich components, which are then evenly distributed into the soil to promote crop growth and development.

[0003] Traditional soil amendment application equipment mainly includes mixers, which are used to mix and blend materials to achieve soil improvement. However, in field use, these mixers do not meet the requirements for mobility and uniform distribution of the amended soil, thus severely impacting the efficiency of soil amendment in practice.

[0004] Based on this, the present invention proposes a soil amendment material application device to solve the problems existing in the prior art. Utility Model Content

[0005] In view of this, the main objective of this utility model is to provide a soil amendment material application device to solve the problem that the existing technology cannot meet the requirements of portability and uniformity of soil application distribution after amendment when used in the field.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A soil amendment application device, comprising:

[0008] Mixing frame;

[0009] The feeding mechanism is located at the feeding pipe of the mixing frame;

[0010] The anti-clogging mechanism is located at the bottom of the mixing frame and matches the filter holes on the bottom wall of the mixing frame;

[0011] The mixing mechanism is located inside the mixing frame.

[0012] In a preferred embodiment, the feeding mechanism includes:

[0013] A spiral feeding column is set at the drive end of the first motor and matches the guide cylinder set on the lower side of the connecting plate. The guide cylinder is connected to the feeding pipe.

[0014] The first motor is located on the upper side of the connecting plate and is connected to the spiral feeding column;

[0015] The hydraulic rod is mounted on one side of the mixing frame via a connecting bracket and is connected to the connecting plate.

[0016] In a preferred embodiment, the feeding pipe is disposed on a baffle, and the baffle is movably engaged in a relief groove on the mixing frame.

[0017] In a preferred embodiment, the anti-blocking mechanism includes:

[0018] The connecting frame is located at the bottom of the mixing frame;

[0019] The drain cleaning boards are arranged in equal rows on top of the connecting frame, and the drain cleaning boards are triangular in shape as a whole;

[0020] Slide cylinders are arranged in a row on the surface of the drainage plate, and slide rods are slidably connected inside the slide cylinders. A first spring is provided at the end of the slide rod, and the other end of the first spring is provided inside the slide cylinder.

[0021] In a preferred embodiment, the anti-blocking mechanism further includes:

[0022] The mounting frame is located at the bottom of the mixing frame, and the first motor is mounted on the mounting frame;

[0023] A long rod eccentric wheel is rotatably mounted at the lower end of the mounting bracket and connected to the first motor. A second spring is also provided at the opposite end of the connecting bracket and the mounting bracket.

[0024] In a preferred embodiment, the end of the slide bar is conical, and the inner wall of the filter hole is recessed into a rectangular shape.

[0025] In a preferred embodiment, the top of the mounting frame is provided with equally spaced sealing plates, and the connecting frame is slidably connected to the mounting frame and the sealing plates in sequence, with the sealing plates slidably connected to the inner wall of the filter holes.

[0026] In a preferred embodiment, a protective frame is provided on the inner bottom wall of the mixing frame, and a first electric push rod is provided inside the protective frame. The telescopic end of the first electric push rod passes through the mixing frame and is connected to the mounting frame.

[0027] In a preferred embodiment, the opposite ends of the connecting frame and the mounting frame are provided with elastic sleeves, and the second spring is located inside the elastic sleeves.

[0028] In a preferred embodiment, the stirring mechanism includes:

[0029] The third motor is located outside the mixing frame, and its transmission end is connected to the transmission shaft;

[0030] The drive shaft is rotatably mounted inside the mixing frame, and several stirring blades are mounted on the drive shaft.

[0031] Compared with the prior art, the present invention provides a soil amendment material application device, which has the following beneficial effects:

[0032] 1. By using a long rod eccentric wheel, a first motor, and a second spring, the unblocking plate reciprocates within the filter holes to clear blockages. The triangular shape of the unblocking plate further disperses the blockages. The sliding rod, sliding cylinder, and first spring push the blockages away, preventing further clogging. Compared to existing methods where excessive material in the filter holes easily causes blockages, this method promptly clears the holes, ensuring rapid material discharge.

[0033] 2. By setting the first electric push rod and the sealing plate, the filter holes are sealed, preventing the material from being discharged through the open filter holes during the mixing of materials by the feeding mechanism, thus ensuring that the materials are fully mixed.

[0034] 3. With the feeding mechanism, the first motor can drive the spiral feeding column to feed the soil and materials into the mixing frame during use; at the same time, the height of the spiral feeding column and the guide cylinder can be adjusted by the extension of the hydraulic rod to facilitate feeding at different heights during use.

[0035] 4. The mixing mechanism can mix the soil and materials in the mixing box during use, ensuring that the soil and materials are fully mixed and guaranteeing the soil improvement effect.

[0036] This solves the problem that existing technologies cannot meet the requirements of uniformity in soil application after improvement when used in the field, thus hindering the mobility of the technology. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1This is a schematic diagram of the overall structure of the soil amendment material application device of this utility model;

[0039] Figure 2 This is an installation effect diagram of the feeding mechanism of this utility model;

[0040] Figure 3 This is a schematic diagram of the feeding mechanism of this utility model;

[0041] Figure 4 This is a cross-sectional view of the soil amendment material application device of this utility model;

[0042] Figure 5 This is a top view of the anti-blocking mechanism of this utility model.

[0043] Figure 6 This is a structural schematic diagram of the anti-blocking mechanism of this utility model from a downward viewing angle;

[0044] Figure 7 This utility model Figure 5 A magnified view of a portion of point A in the middle.

[0045] [Explanation of Key Component Symbols]

[0046] 1. Mixing frame; 11. Connecting frame; 12. Feeding pipe; 13. Rollers; 14. Baffle;

[0047] 2. Feeding mechanism; 21. Feeding column; 22. First motor; 23. Hydraulic rod; 24. Connecting plate; 25. Guide cylinder;

[0048] 3. Filter holes;

[0049] 4. Anti-blocking mechanism; 41. Connecting frame; 42. Unblocking plate; 43. Slide cylinder; 44. Slide rod; 45. First spring; 46. Long rod eccentric wheel; 47. Second spring; 48. Mounting frame; 49. Sealing plate; 410. First electric push rod; 411. Second motor; 412. Elastic soft sleeve; 413. Protective frame;

[0050] 5. Stirring mechanism; 51. Third motor; 52. Drive shaft; 53. Stirring blade. Detailed Implementation

[0051] The structure of the soil amendment material application device will be further described in detail below with reference to the accompanying drawings and embodiments of the present invention.

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Example 1:

[0057] As per the instruction manual Figures 1-7 As shown, this utility model provides a technical solution:

[0058] A soil amendment material application device includes a movable mixing frame 1, and a feeding mechanism 2, an anti-clogging mechanism 4, and a mixing mechanism 5 disposed on the mixing frame 1; wherein:

[0059] The feeding mechanism 2 is installed at the feeding pipe 12 of the mixing frame 1, and is used to introduce external soil and materials required for soil improvement into the mixing frame 1.

[0060] The anti-clogging mechanism 4 is installed at the bottom of the mixing frame 1 and works in conjunction with the filter holes 3 provided on the bottom wall of the mixing frame 1 to prevent material from clogging the filter holes 3.

[0061] The mixing mechanism 5 is installed inside the mixing frame 1 and is used to mix the substances in the mixing frame 1 or the materials required for soil improvement.

[0062] It should be noted that in this embodiment, the aforementioned mixing frame 1, feeding mechanism 2, anti-clogging mechanism 4, and stirring mechanism 5 form a mobile device for mixing and improving soil in the field or at a material yard. In practical use, the device is moved by rollers located on the lower side of the mixing frame 1. Simultaneously, the feeding mechanism 2 introduces external soil and materials needed for soil improvement into the mixing frame 1. The materials in the mixing frame 1 are mixed under the stirring action of the stirring mechanism 5, thus improving the soil. The improved soil is then discharged into the field through the filter holes 3, achieving the effect of fertilization or soil improvement. During the operation of the filter holes 3, the anti-clogging mechanism 4 cleans the filter holes 3 to prevent material from clogging them.

[0063] Specifically, during use, after mixing, the mixing frame 1 is moved to a suitable position under the tree canopy. A fertilizer trench is dug at the drip line of the orchard tree canopy. Crushed straw is laid at the bottom of the fertilizer trench and discharged, so that the mixed material is composted in trapezoidal stacks between the fruit tree rows under the canopy. After the semi-fermentation time is about 20 to 30 days, earthworms are added to the agricultural waste mixture in a trench for earthworm farming. The earthworm feeding stage can realize the digestion and return of crop and livestock waste such as straw to the field. Moreover, by laying crushed straw at the bottom of the fertilizer trench, the efficiency of returning crop waste such as straw to the field can be further improved.

[0064] The method of returning agricultural waste to the field after it has been processed by earthworms requires that the dry weight ratio of livestock and poultry manure to garden waste be 2:1 to 1:4. The livestock and poultry manure includes at least one of cow manure, pig manure, chicken manure, duck manure, and sheep manure; and the garden waste includes at least one of branches, fallen leaves, weeds, straw, mushroom sticks, vegetables, medicinal residues, fruit peels, and substandard fruits.

[0065] Example 2:

[0066] Based on the above embodiment 1, as follows Figure 1 , Figure 2 and Figure 3 As shown, the feeding mechanism 2 includes a spiral feeding column 21, a first motor 22, and a hydraulic rod 23; wherein:

[0067] The spiral feeding column 21 is a conical structure installed at the drive end of the first motor 22. It is used in conjunction with the guide cylinder 25 installed on the lower side of the connecting plate 24. The upper outlet of the guide cylinder 25 is connected to the feeding pipe 12. Through the action of the guide cylinder 25 and the feeding pipe 12, the material is introduced into the mixing frame 1.

[0068] The first motor 22 is fixedly installed on the upper side of the connecting plate 24 and connected to the spiral feeding column 21;

[0069] The hydraulic rod 23 is installed on one side of the mixing frame 1 via the connecting frame 11 and is connected to the connecting plate 24.

[0070] It should be noted that, in this embodiment, the feeding mechanism 2 allows the first motor 22 to rotate the spiral feeding column 21 during use. The spiral feeding column 21 and the guide cylinder 25 work together to feed the material, which is then guided into the mixing frame 1 via the feeding pipe 12. Simultaneously, the extension of the hydraulic rod 23 adjusts the height of the spiral feeding column 21 and the guide cylinder 25, allowing for feeding at different heights during use.

[0071] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the feeding pipe 12 is mounted on the baffle 14, which is movably engaged in the relief groove on the mixing frame 1. When the hydraulic rod 23 is extended, it drives the baffle 14 to move synchronously in the relief groove, so that the feeding pipe 12 can change according to the position of the guide cylinder 25, and the baffle 14 can block the relief groove to prevent material from flowing out.

[0072] Example 3:

[0073] Based on the above embodiments, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the anti-clogging mechanism 4 is located at the bottom of the mixing frame 1, including a connecting frame 41 located at the bottom of the mixing frame 1. The top of the connecting frame 41 is fixedly connected to a series of equally arranged unblocking plates 42. The unblocking plates 42 are triangular in shape, and equally arranged sliding cylinders 43 are fixedly connected to the surface of the unblocking plates 42. A sliding rod 44 is slidably connected inside the sliding cylinder 43. A first spring 45 is fixedly connected to the end of the sliding rod 44. The other end of the first spring 45 is fixedly connected to the inner wall of the sliding cylinder 43. The end of the sliding rod 44 is conical, and the inner wall of the filter hole 3 is recessed in a rectangular structure.

[0074] like Figure 5 , Figure 6 and Figure 7As shown, the anti-blocking mechanism 4 also includes a mounting frame 48 installed at the bottom of the mixing frame 1. A long rod eccentric wheel 46 is rotatably connected to the lower end of the surface of the mounting frame 48. A second motor 411 is fixedly connected to the front end of the mounting frame 48. The output shaft of the second motor 411 is fixedly connected to one end of the long rod eccentric wheel 46. A second spring 47 is fixedly connected to the opposite end of the connecting frame 41 and the mounting frame 48.

[0075] The long rod eccentric wheel 46 includes a long rod and an eccentric wheel. The surface of the long rod is rotatably connected to the inner wall of the mounting bracket 48. One end of the long rod is fixedly connected to the output shaft of the second motor 411. The inner wall of the eccentric wheel is fixedly connected to the surface of the long rod. The second motor 411 is a servo motor.

[0076] It should be noted that, in this embodiment, with the structure of the anti-blocking mechanism 4 described above, when the mixing frame 1 needs to be discharged, the filter hole 3 is opened, allowing the mixed material in the mixing frame 1 to be discharged through the filter hole 3. The second motor 411 is turned on, and the output shaft of the second motor 411 rotates, driving the long rod eccentric wheel 46 to rotate. As the long rod eccentric wheel 46 rotates, it pushes the connecting frame 41 to move upward within the mounting frame 48 and stretches the second spring 47. The upward movement of the connecting frame 41 drives multiple unblocking plates 42, slide cylinders 43, and slide rods 44 to move upward. The triangular unblocking plates 42 unblock the material blocked in the filter hole 3 and guide the material to be quickly discharged through the side of the unblocking plates 42. The material is dispersed using the slide cylinder 43 and slide rod 44. The material pushes the slide rod 44 into the slide cylinder 43, compressing the first spring 45. The highest point of the long rod eccentric wheel 46 moves away from the connecting frame 41. The elastic force of the second spring 47 pulls the connecting frame 41 downwards, causing the unblocking plate 42, slide cylinder 43, and slide rod 44 to move downwards as well. At this time, the elastic force of the first spring 45 pushes the slide rod 44 back to its original position, dispersing the material blocking the filter holes 3, allowing the material to be quickly discharged from the filter holes 3. After the material is discharged, the second motor 411 is turned off.

[0077] In a preferred embodiment, such as Figure 5 , Figure 6 and Figure 7 As shown, the top of the mounting frame 48 is fixedly connected with equally arranged sealing plates 49. The surface of the connecting frame 41 is slidably connected to the inner wall of the mounting frame 48 and the sealing plates 49 in sequence. The surface of the sealing plates 49 is slidably connected to the inner wall of the filter holes 3. Two protective frames 413 are fixedly connected to the inner bottom wall of the mixing frame 1. The inner top wall of the protective frame 413 is fixedly connected with a first electric push rod 410. The telescopic end of the first electric push rod 410 passes through the mixing frame 1 and is fixedly connected to the top of the mounting frame 48.

[0078] It should be noted that in this embodiment, in the initial state, the sealing plate 49 is located in the inner wall of the filter hole 3, sealing the filter hole 3. When it is necessary to open the filter hole 3, the first electric push rod 410 is manually activated. The telescopic end of the first electric push rod 410 moves down, causing the mounting bracket 48 to move down. The movement of the mounting bracket 48 causes the sealing plate 49, the connecting bracket 41, and the unblocking plate 42 to move down, thereby opening the interior of the filter hole 3.

[0079] like Figure 7 As shown, an elastic sleeve 412 is fixedly connected to the opposite ends of the connecting bracket 41 and the mounting bracket 48, and the surface of the second spring 47 is located inside the elastic sleeve 412. The elastic sleeve 412 is a silicone component.

[0080] Example 4:

[0081] Based on the above embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the stirring mechanism 5 includes a third motor 51 and a drive shaft 52; wherein:

[0082] The third motor 51 is fixedly installed on the outer surface of the mixing frame 1, and its transmission end is connected to the transmission shaft 52;

[0083] The drive shaft 52 is rotatably disposed within the mixing frame 1, and several stirring blades 53 are fixedly installed on the drive shaft 52.

[0084] It should be noted that, in this embodiment, with the structure of the above-mentioned stirring mechanism 5, the third motor 51 can be turned on as needed during use, and the third motor 51 drives the transmission shaft 52 to rotate. During the rotation of the transmission shaft 52, the stirring blades 53 are driven to stir the materials in the mixing frame 1, thereby improving the soil quality.

[0085] When using the soil amendment material application device described in this utility model:

[0086] First, the external soil and the materials required for soil improvement are introduced into the mixing frame 1 through the feeding mechanism 2. The materials in the mixing frame 1 are mixed under the stirring action of the mixing mechanism 5.

[0087] Then, after the materials are thoroughly mixed, push the mixing frame 1 to a suitable position under the tree canopy, open a fertilizer trench at the drip line of the orchard tree canopy, lay crushed straw at the bottom of the fertilizer trench and discharge the material, so that the mixed material is composted and fermented in a trapezoidal stack between the rows of fruit trees under the tree canopy.

[0088] The specific discharge process includes: opening the filter hole 3 to allow the mixed material in the mixing frame 1 to be discharged through the filter hole 3; manually starting the second motor 411; rotating the output shaft of the second motor 411 to drive the long rod eccentric wheel 46 to rotate; rotating the long rod eccentric wheel 46 and the second spring 47 to cause the connecting frame 41, the unblocking plate 42, the slide cylinder 43 and the slide rod 44 to reciprocate up and down; the triangular unblocking plate 42 unblocks the material blocked in the filter hole 3 and guides the material to be discharged quickly through the side of the unblocking plate 42; the slide cylinder 43, the first spring 45 and the slide rod 44 guide and disperse the material, allowing the material in the filter hole 3 to be discharged quickly.

[0089] It should be noted that the mixing frame 1, the first motor 22, the second motor 411, the third motor 51, the hydraulic rod 23, and the first electric push rod 410 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the first motor 22, the second motor 411, the third motor 51, and the first electric push rod 410 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0090] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A soil amendment material applicator characterized by: The utility model relates to a kind of mixing frame and its upper feeding mechanism, stirring mechanism and anti-blocking mechanism. It comprises: Mixing frame (1); Upper feeding mechanism (2) is arranged at the upper feeding pipe (12) of mixing frame (1); Anti-blocking mechanism (4) is arranged at the bottom of mixing frame (1), and is matched with filter hole (3) on the bottom wall of mixing frame (1); 2. A soil amendment material applicator as claimed in claim 1, characterised in that: Stirring mechanism (5) is arranged in mixing frame (1). The upper feeding mechanism (2) comprises: Spiral feeding column (21) is arranged at the driving end of first motor (22), and is matched with guide tube (25) arranged at the lower side of connecting plate (24), and the guide tube (25) is communicated with upper feeding pipe (12); First motor (22) is arranged at the upper side of connecting plate (24), and is connected with spiral feeding column (21); 3. A soil amendment material applicator as claimed in claim 2, characterised in that: Hydraulic rod (23) is arranged at one side of mixing frame (1) through connecting frame (11), and is connected with connecting plate (24).

4. A soil amendment material applicator as claimed in claim 1, wherein: The upper feeding pipe (12) is arranged on baffle (14), and the baffle (14) is clamped in the accommodation slot on mixing frame (1) movably. The anti-blocking mechanism (4) comprises: Connecting frame (41) is arranged at the bottom of mixing frame (1); Clearing plate (42) is arranged at the top of connecting frame (41) in parallel, and the whole clearing plate (42) is triangular; 5. A soil amendment material applicator as claimed in claim 4, characterised in that: Slide cylinder (43) is arranged on the surface of clearing plate (42) in parallel, and slide rod (44) is connected in slide cylinder (43), and the end of slide rod (44) is provided with first spring (45), and the other end of first spring (45) is arranged in slide cylinder (43). The anti-blocking mechanism (4) further comprises: Mounting bracket (48) is arranged at the bottom of mixing frame (1), and first motor (411) is arranged on mounting bracket (48); 6. A soil amendment material applicator as claimed in claim 4, characterised in that: Long rod eccentric wheel (46) is rotatably arranged at the lower end of mounting bracket (48), and is connected with first motor (411), and second spring (47) is further arranged at the opposite end of connecting frame (41) and mounting bracket (48).

7. A soil amendment material applicator as claimed in claim 5, characterised in that: The end of slide rod (44) is conical, and the inner wall of filter hole (3) is concave rectangular.

8. A soil amendment material applicator as claimed in claim 5, characterised in that: Mounting bracket (48) is arranged on the top of mounting bracket (48) in parallel, and connecting frame (41) is slidably connected with mounting bracket (48) and sealing plate (49) in sequence, and sealing plate (49) is slidably connected in the inner wall of filter hole (3).

9. A soil amendment material applicator as defined in claim 5, wherein: The inner bottom wall of mixing frame (1) is provided with protection frame (413), and first electric push rod (410) is arranged in protection frame (413), and the telescopic end of first electric push rod (410) penetrates mixing frame (1) and is connected with mounting bracket (48).

10. A soil amendment material applicator as claimed in claim 1, characterised in that: The opposite end of connecting frame (41) and mounting bracket (48) is provided with elastic sleeve (412), and second spring (47) is located in elastic sleeve (412). The stirring mechanism (5) comprises: Third motor (51) is arranged outside mixing frame (1), and the driving end is connected with transmission shaft (52); Transmission shaft (52) is rotatably arranged in mixing frame (1), and a plurality of stirring blades (53) are arranged on transmission shaft (52).

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