Novel agricultural fertilizer production device

Abstract

The utility model discloses a novel agricultural fertilizer production device, and belongs to the technical field of liquid fertilizer production. The device comprises a tank body, a liquid outlet pipe is arranged at the bottom of the tank body; a valve is arranged on the liquid outlet pipe; a feeding structure for beating solid raw materials is arranged on the top surface of the tank body; the stirring assembly is arranged on the tank body; the degassing assembly comprises an ultrasonic generator, a transducer and a vibration rod; the transducer is arranged on the top surface of the tank body; the transducer penetrates through the tank body and extends into the tank body; one end of the vibrating rod is connected with the transducer; the vibrating rod is positioned in the tank body; and the transducer is in circuit connection with the ultrasonic generator. The liquid fertilizer can be stirred and degassed at the same time, the production process of the liquid fertilizer is effectively simplified, and the production cycle is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of liquid fertilizer production technology, specifically relating to a new type of agricultural fertilizer production device. Background Technology

[0002] Liquid fertilizer is a new type of high-efficiency compound fertilizer. Liquid fertilizers include clear liquid, suspension, and paste types, and have advantages such as easy absorption and high absorption rate, making them one of the current trends in the fertilizer industry. During the production process of liquid fertilizer, it is usually necessary to mix the liquid using stirring equipment. Air is incorporated during this mixing process, resulting in the presence of bubbles in the liquid fertilizer. Additionally, the raw materials of the liquid fertilizer may react, generating bubbles. To prevent bubbles from affecting the quality of the liquid fertilizer, air bubbles are removed during the production process.

[0003] In the prior art, deaerators are commonly used to remove air bubbles from liquid fertilizers. For example, utility model patent publication number CN221601308U discloses a deaerator for liquid fertilizer production. This device includes a supporting base plate, with symmetrical grooves on the upper side wall of the supporting base plate. A moving mechanism is provided inside both grooves. A collection box is fixedly installed at the left end of the upper side wall of the supporting base plate. A filter funnel is fixedly installed on the upper side wall of the collection box. A filter screen is fixedly installed inside the filter funnel. A pump body is fixedly installed inside the collection box, and a return pipe is fixedly installed at the upper end of the pump body.

[0004] The aforementioned device uses a rotating mechanism to drive the processing box to rotate, pouring the internal air bubbles into the air bubble holding box to achieve the effect of air bubble removal and improve the quality of liquid fertilizer production. However, this device can only be used after the liquid fertilizer has been stirred and mixed, not during the liquid fertilizer stirring and mixing process, resulting in cumbersome and time-consuming production steps. Furthermore, the raw materials for liquid fertilizer contain solid substances, which may clump together and have a large volume. When these solid substances enter the mixing equipment through the feed pipe, their large volume prevents them from dissolving quickly, leading to uneven mixing. Therefore, a new type of agricultural fertilizer production device is needed that can stir and mix liquid fertilizer, remove air bubbles, and disperse solid raw materials. Utility Model Content

[0005] This invention provides a novel agricultural fertilizer production device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel agricultural fertilizer production device includes: a tank; a liquid outlet pipe at the bottom of the tank; a valve on the liquid outlet pipe; a feeding structure for agitating solid raw materials on the top surface of the tank; a stirring assembly mounted on the tank; and a degassing assembly including an ultrasonic generator, a transducer, and a vibrating rod; the transducer is located on the top surface of the tank; the transducer penetrates the tank and extends into its interior; one end of the vibrating rod is connected to the transducer; the vibrating rod is located inside the tank; and the transducer is electrically connected to the ultrasonic generator.

[0008] As a further improvement to the technical solution, the stirring assembly includes a first motor, a shaft, and a stirring element; one end of the shaft is vertically rotatably mounted on the top of the tank, and the other end extends toward the interior of the tank; the first motor is mounted on the top of the tank, and its output end is mechanically connected to the shaft to drive the shaft to rotate; the stirring element is mounted on the shaft; the stirring element is located inside the tank.

[0009] As a further improvement to the technical solution, the shaft is located at the center of the top of the tank; the vibration rod is located at the edge of the tank.

[0010] As a further improvement to the technical solution, the stirring component includes a connecting rod and a first frame; one end of the connecting rod is connected to the shaft, and the other end is connected to the first frame; the slots of the first frame are vertically distributed.

[0011] As a further improvement to the technical solution, the stirring component also includes a connecting plate and a second frame; the first frame is connected to the connecting rod through the connecting plate; one side of the connecting plate is connected to the end of the connecting rod away from the shaft, and the other side is connected to the first frame and the second frame; the size of the second frame is smaller than the size of the first frame.

[0012] As a further improvement to the technical solution, the stirring components are distributed in parallel at equal intervals along the circumferential direction of the shaft axis; the stirring components are located at the end of the shaft away from the first motor.

[0013] As a further improvement to the technical solution, the degassing assembly also includes an amplitude transformer; the vibrating rod is connected to the transducer through the amplitude transformer; one end of the amplitude transformer is connected to the transducer, and the other end is connected to the vibrating rod.

[0014] As a further improvement to the technical solution, the feeding structure includes a hopper, a second motor, a rod, and a plate; the hopper is connected to the interior of the tank; the discharge end of the hopper has a rectangular structure; an opening is provided on the side of the discharge end of the hopper; the middle part of the rod is hinged to the hopper through the opening; one end of the rod is located outside the hopper and is connected to the output end of the second motor, and the other end of the rod is located inside the hopper and is hinged to one end of the plate; the end of the plate away from the rod is close to the inner wall of the hopper.

[0015] As a further improvement to the technical solution, the rod and the plate are detachably connected; a protrusion is provided on the top surface of the end of the rod away from the second motor; the protrusion has a rectangular structure; a slot is provided on the end of the plate away from the inner wall of the hopper corresponding to the protrusion; the plate is detachably connected to the rod through the slot.

[0016] As a further improvement to the technical solution, the feeding structure also includes a sliding plate, a disc, and a column; the rod is connected to the output end of the second motor through the sliding plate; a groove is formed on the surface of the sliding plate along its length; the surface of the sliding plate is hinged to the end of the rod away from the plate; the length direction of the sliding plate is consistent with the length direction of the hopper; the second motor is connected to the sliding plate through the disc and the column; the output end of the second motor is connected to the center of the disc surface; one end of the column is connected to the edge of the disc surface away from the second motor, and the other end extends into the groove and is connected to the sliding plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. In this application, raw materials are injected into the tank through the feeding structure. When solid raw materials enter the feeding structure, the feeding structure disperses the solid raw materials, reducing the volume of agglomerated solid raw materials. Then, the first motor and ultrasonic generator are started. The first motor drives the shaft to rotate, which drives the stirring component set on the shaft to stir. The stirring component mixes the components of the liquid fertilizer thoroughly through mechanical shearing force and eddy current action. At the same time, the transducer converts the electrical energy of the ultrasonic generator into mechanical vibration energy. The mechanical vibration energy is transmitted to the liquid fertilizer through the vibrating rod. The cavitation effect of ultrasonic vibration causes the liquid fertilizer to generate a large number of tiny bubbles. The bubbles vibrate violently and break under the sound pressure of the sound waves, causing the gas in the liquid fertilizer to escape. At the same time, the liquid fertilizer is stirred and degassed, which effectively simplifies the production process of liquid fertilizer and shortens the production cycle.

[0019] 2. When this application is used, the second motor is started, and the output end of the second motor rotates. The disc rotates with the output end of the second motor, and the column moves in a circle around the output end of the second motor. When the column moves in a circle, it drives the slide plate to move back and forth left and right. The column moves up and down along the slide groove on the slide plate. When the column is in the middle of the slide groove, the slide plate is located to the left or right of the output end of the second motor. When the column is at the top and bottom of the slide groove, the slide plate is located in the middle of the output end of the second motor. The end of the rod outside the hopper moves back and forth left and right with the slide plate, driving the plate to fan left and right inside the hopper. The fanning plate beats the solid raw materials poured into the hopper, breaking up the clumps of solid raw materials and reducing the volume of solid raw materials. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of a novel agricultural fertilizer production device provided by this utility model. Figure 1 ;

[0022] Figure 2 for Figure 1 Top view;

[0023] Figure 3 for Figure 2 Sectional view at point AA;

[0024] Figure 4 Schematic diagram of the structure of the stirring component provided by this utility model Figure 1 ;

[0025] Figure 5 Schematic diagram of the structure of the stirring component provided by this utility model Figure 2 ;

[0026] Figure 6 Schematic diagram of the feeding structure provided by this utility model Figure 1 ;

[0027] Figure 7 Schematic diagram of the feeding structure provided by this utility model Figure 2 ;

[0028] Figure 8 for Figure 6 Top view;

[0029] Figure 9 for Figure 8 Sectional view at point BB;

[0030] Reference numerals: 1-Tank body, 11-Discharge pipe, 12-Valve, 13-Hopper, 14-Second motor, 15-Rod, 16-Plate, 17-Slide plate, 18-Disc, 19-Column, 2-Agitator assembly, 21-Motor, 22-Shaft, 23-Agitator component, 231-Connecting rod, 232-First frame, 233-Connecting plate, 234-Second frame, 3-Degassing assembly, 31-Transducer, 32-Vibrating rod, 33-Amplitude rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0032] The terms "first," "second," and similar words used in this utility model application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Example 1:

[0035] like Figures 1 to 5 As shown, a novel agricultural fertilizer production device includes: a tank 1, a stirring assembly 2, and a degassing assembly 3; a liquid outlet pipe 11 is provided at the bottom of the tank 1; a valve 12 is provided on the liquid outlet pipe 11 to control the opening and closing of the liquid outlet pipe 11; a feeding structure for beating solid raw materials is provided on the top surface of the tank 1; the stirring assembly 2 is provided on the tank 1 to stir the liquid inside the tank 1; the degassing assembly 3 includes an ultrasonic generator (not shown), a transducer 31, and a vibrating rod 32; the transducer 31 is provided on the top surface of the tank 1; the transducer 31 penetrates the pipe 1 and extends into the interior of the tank 1; one end of the vibrating rod 32 is connected to the transducer 31; the vibrating rod 32 is located inside the tank 1; the ultrasonic generator is provided outside the tank 1, and the ultrasonic generator is electrically connected to the transducer 31. The transducer 31 converts the electrical energy generated by the ultrasonic generator into mechanical energy, causing the vibrating rod 32 to generate ultrasonic vibration. It should also be noted that the connection between the transducer and the ultrasonic generator is a conventional connection. The specific models of the transducer and ultrasonic generator are not improvements in this application and will not be elaborated here.

[0036] like Figures 1 to 3 As shown, preferably, the stirring assembly 2 includes a first motor 21, a shaft 22, and a stirring element 23; one end of the shaft 22 is vertically rotatably mounted on the top of the tank 1, and the other end extends towards the interior of the tank 1; the first motor 21 is mounted on the top of the tank 1, and its output end is mechanically connected to the shaft 22 to drive the shaft 22 to rotate; preferably, the output end of the first motor 21 is directly connected to the shaft 22; the stirring element 23 is mounted on the shaft 22 and rotates with the shaft 22; the stirring element 23 is located inside the tank 1. It should also be noted that the connection between the first motor and the shaft is a conventional connection, and the specific model of the first motor is not an improvement point of this application, and will not be elaborated here.

[0037] like Figure 2 and Figure 3 As shown, the preferred shaft 22 is located at the top center of the tank 1; the vibrating rod 32 is located at the edge of the tank 1 to avoid collision between the vibrating rod 32 and the stirring component 23.

[0038] Work style:

[0039] During use, the raw materials are injected into the tank 1 through the feeding structure. When solid raw materials enter the feeding structure, the feeding structure disperses the solid raw materials, reducing the volume of agglomerated solid raw materials. Then, the first motor 21 and the ultrasonic generator are started. The first motor 21 drives the shaft 22 to rotate, which drives the stirring element 23 set on the shaft 22 to stir. The stirring element 21 mixes the components of the liquid fertilizer thoroughly through mechanical shearing force and eddy current action. At the same time, the transducer 31 converts the electrical energy of the ultrasonic generator into mechanical vibration energy. The mechanical vibration energy is transmitted to the liquid fertilizer through the vibrating rod 32. The cavitation effect of ultrasonic vibration causes the liquid fertilizer to generate a large number of tiny bubbles. The bubbles vibrate violently and break under the sound pressure of the sound waves, causing the gas in the liquid fertilizer to escape. At the same time, the liquid fertilizer is stirred and degassed, which effectively simplifies the production process of liquid fertilizer and shortens the production cycle.

[0040] like Figure 3 As shown, preferably, the degassing assembly 3 further includes an amplitude transformer 33; the vibrating rod 32 is connected to the transducer 31 through the amplitude transformer 33; one end of the amplitude transformer 33 is connected to the transducer 31, and the other end is connected to the vibrating rod 32. The amplitude transformer 33 transmits the ultrasonic energy vibration of the transducer 31 to the vibrating rod 32, and amplifies the amplitude of the vibrating rod 32 through the amplitude transformer 33.

[0041] Example 2:

[0042] like Figures 3 to 5 As shown, the difference from Embodiment 1 is that: a structural form of the stirring component 23 is given; the stirring components 23 are distributed in parallel and at equal intervals along the circumferential direction of the axis of the shaft 22; the stirring component 23 is located at the end of the shaft 22 away from the first motor 21; the stirring component 23 includes a connecting rod 231 and a first frame 232; one end of the connecting rod 231 is connected to the shaft 22, and the other end is connected to the first frame 232; the connecting rod 231 is horizontally arranged; the slots of the first frame 232 are vertically distributed; the first frame 232 is linked to the shaft 22 through the connecting rod 231 and rotates around the central axis of the shaft 22 with the connecting rod 232. During the rotation, the first wide body 232 cuts the liquid, forming high-speed shear, breaking the viscous resistance between the liquid fertilizers, and breaking up the raw materials and bubbles. The vertically distributed first frame 232 pushes the liquid to generate radial flow (diffusion to the outer periphery) and axial flow (circulation up and down along the vertical direction of the tank 1) when rotating, so as to promote the full mixing of liquids at different depths in the tank 1.

[0043] like Figures 3 to 5As shown, preferably, the mixing component 23 further includes a connecting plate 233 and a second frame 234; the first frame 232 is connected to the connecting rod 231 via the connecting plate 233; the plate surface of the connecting plate 233 is connected to one end of the connecting rod 231 away from the shaft 22, and its other plate surface is connected to the first frame 232 and the second frame 234; the first frame 232 and the second frame 234 are on the same horizontal plane, and the size of the second frame 234 is smaller than the size of the first frame 232. When the shaft 22 rotates, the liquid fertilizer passes through the first frame 232 and the second frame 234 in sequence; the second frame 234 further disperses the bubbles and raw materials after they have been dispersed by the first frame 232, refines the remaining tiny bubbles and raw materials, and at the same time enhances the turbulence in the area of ​​the shaft 22, supplements the mixing intensity in the central area, and eliminates the mixing blind zone.

[0044] Example 3:

[0045] Compared with Embodiment 1, the difference lies in that a structural form of the feeding structure is provided; the feeding structure includes a hopper 13, a second motor 14, a rod 15, and a plate 16; the hopper 13 is disposed on the top surface of the tank 1 and communicates with the interior of the tank 1; the discharge end of the hopper 13 has a rectangular structure; an opening is provided on the side of the discharge end of the hopper 13; the middle part of the rod 15 is hinged to the hopper through the opening; one end of the rod 15 is located outside the hopper 13, and the other end is located inside the hopper 13; the end of the rod 15 located outside the hopper 13 is connected to the output end of the second motor 14, and the end of the rod 15 located inside the hopper 13 is connected to the plate 16; the output end of the second motor 14 is connected to the rod 15, driving the rod 15 to reciprocate, so that the plate 16 moves back and forth along the width direction of the hopper 13 inside the hopper 13; the end of the plate 16 away from the rod 15 is close to the inner wall of the hopper 13 to expand the beating range of the plate 16.

[0046] like Figure 5 As shown, preferably, the rod 15 and the plate 16 are detachably connected; a protrusion is provided on the top surface of the end of the rod 15 away from the second motor 14; the protrusion has a rectangular structure; a corresponding slot is opened on the protrusion at the end of the plate 16 away from the inner wall of the hopper 13; the plate 16 is detachably connected to the rod 15 through the slot, and when the plate 16 is connected to the rod 15, the slot is inserted into the protrusion, and the inner wall of the slot fits against the outer wall of the protrusion to facilitate the installation of the plate 16. The protrusion has a rectangular structure, which can prevent the plate 16 and the rod 15 from rotating.

[0047] like Figure 2 , Figure 3 and Figure 5As shown, preferably, the feeding structure further includes a slide plate 17, a disc 18, and a column 19; the rod 15 is connected to the output end of the second motor 14 via the slide plate 17; the surface of the slide plate 17 has a groove along its length; the surface of the slide plate 17 is hinged to the end of the rod 15 away from the plate 16; the length direction of the slide plate 17 is consistent with the length direction of the hopper 13; the tapping assembly 2 also includes a disc 18 and a column 19; the column 19 has a cylindrical structure; the second motor 14 is connected to the slide plate 17 via the disc 18 and the column 19; the output end of the second motor 14 is connected to the center of the disc surface of the disc 18; one end of the column 19 is connected to the edge of the disc surface of the disc 18 away from the second motor 14, and its other end extends into the groove and is connected to the slide plate 17; the output end of the second motor 14 faces the same direction as the length direction of the rod 15. It should also be noted that the specific model of the second motor is not an improvement of this application and will not be elaborated here.

[0048] Work style:

[0049] In use, the second motor 14 is started, and the output end of the second motor 14 rotates. The disc 18 rotates with the output end of the second motor 14, and the column 19 makes a circular motion around the output end of the second motor 14. When the column 19 makes a circular motion, it drives the slide plate 17 to move back and forth left and right. The column 19 moves up and down along the slide groove on the slide plate 17. When the column 19 is in the middle of the slide groove, the slide plate 17 is located to the left or right of the output end of the second motor 14. When the column 19 is at the top and bottom of the slide groove, the slide plate 17 is located in the middle of the output end of the second motor 14. The end of the rod 15 outside the hopper 13 moves back and forth left and right with the slide plate 17, driving the plate 16 to fan left and right inside the hopper 13. The fanning plate 16 beats the solid raw materials poured into the hopper 13, breaking up the clumps of solid raw materials and reducing the volume of solid raw materials.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel agricultural fertilizer production device, characterized in that, include: Tank body (1); a liquid outlet pipe (11) is provided at the bottom of the tank body (1); a valve (12) is provided on the liquid outlet pipe (11); a feeding structure for beating solid raw materials is provided on the top surface of the tank body (1); A stirring assembly (2) is installed on the tank (1); The degassing assembly (3) includes an ultrasonic generator, a transducer (31), and a vibrating rod (32); the transducer (31) is disposed on the top surface of the tank (1); the transducer (31) penetrates the tank (1) and extends into the interior of the tank (1); one end of the vibrating rod (32) is connected to the transducer (31); the vibrating rod (32) is located inside the tank (1); the transducer (31) is electrically connected to the ultrasonic generator. The feeding structure includes a hopper (13), a second motor (14), a rod (15), a plate (16), a sliding plate (17), a disc (18), and a column (19); the hopper (13) is connected to the interior of the tank (1); the discharge end of the hopper (13) is rectangular; an opening is provided on the side of the discharge end of the hopper (13); the middle part of the rod (15) is hinged to the hopper (13) through the opening; one end of the rod (15) is located outside the hopper (13), and this end is connected to the output end of the second motor (14); the other end of the rod (15) is located inside the hopper (13), and this end is hinged to one end of the plate (16); the end of the plate (16) away from the rod (15) is close to the hopper (13). The inner wall of the hopper (13) is connected to the output end of the second motor (14) via the slide plate (17). The slide plate (17) has a groove along its length. The slide plate (17) is hinged to the end of the rod (15) away from the plate (16). The length direction of the slide plate (17) is consistent with the length direction of the hopper (13). The second motor (14) is connected to the slide plate (17) via the disc (18) and the column (19). The output end of the second motor (14) is connected to the center of the disc surface of the disc (18). One end of the column (19) is connected to the edge of the disc surface of the disc (18) away from the second motor (14), and the other end extends into the groove and is connected to the slide plate (17).

2. The novel agricultural fertilizer production device according to claim 1, characterized in that, The stirring assembly (2) includes a first motor (21), a shaft (22), and a stirring element (23); one end of the shaft (22) is vertically rotatably mounted on the top of the tank (1), and the other end extends toward the interior of the tank (1); the first motor (21) is mounted on the top of the tank (1), and its output end is mechanically connected to the shaft (22) to drive the shaft (22) to rotate; the stirring element (23) is mounted on the shaft (22); the stirring element (23) is located inside the tank (1).

3. The novel agricultural fertilizer production device according to claim 2, characterized in that, The shaft (22) is located at the top center of the tank (1); the vibrating rod (32) is located at the edge of the tank (1).

4. The novel agricultural fertilizer production device according to claim 2, characterized in that, The stirring component (23) includes a connecting rod (231) and a first frame (232); one end of the connecting rod (231) is connected to the shaft (22), and the other end is connected to the first frame (232); the slots of the first frame (232) are vertically distributed.

5. The novel agricultural fertilizer production device according to claim 4, characterized in that, The stirring component (23) further includes a connecting plate (233) and a second frame (234); the first frame (232) is connected to the connecting rod (231) through the connecting plate (233); one side of the connecting plate (233) is connected to one end of the connecting rod (231) away from the shaft (22), and the other side is connected to the first frame (232) and the second frame (234); the size of the second frame (234) is smaller than the size of the first frame (232).

6. The novel agricultural fertilizer production device according to claim 5, characterized in that, The stirring components (23) are distributed in parallel at equal intervals along the circumferential direction of the axis of the shaft (22); the stirring components (23) are located at the end of the shaft (22) away from the first motor (21).

7. The novel agricultural fertilizer production device according to claim 1, characterized in that, The degassing assembly (3) also includes an amplitude transformer (33); the vibrating rod (32) is connected to the transducer (31) through the amplitude transformer (33); one end of the amplitude transformer (33) is connected to the transducer (31), and the other end is connected to the vibrating rod (32).

8. The novel agricultural fertilizer production apparatus according to any one of claims 1-7, characterized in that, The rod (15) and the plate (16) are detachably connected; a protrusion is provided on the top surface of the end of the rod (15) away from the second motor (14); the protrusion is rectangular; a slot is provided on the end of the plate (16) away from the inner wall of the hopper (13) corresponding to the protrusion; the plate (16) is detachably connected to the rod (15) through the slot.

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