CN113519487A

CN113519487A - Throwing device and plant protection equipment

Info

Publication number: CN113519487A
Application number: CN202010318212.XA
Authority: CN
Inventors: 李晟华; 李杰孙
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-10-22

Abstract

The invention relates to the technical field of plant protection equipment, and particularly discloses a throwing device and plant protection equipment. The throwing device comprises a shell, a throwing assembly and a driving mechanism for driving the throwing assembly to rotate, and the shell is provided with a first material outlet; the throwing assembly is arranged in the shell and comprises a material container and a spiral piece, a material inlet and a second material outlet which are communicated with the containing cavity are arranged on the material container at intervals, and the material conveying direction is the direction from the material inlet to the second material outlet; the material container can rotate to the position that the second material outlet is communicated with the first material outlet. The material moves to the side where the second material outlet is located gradually along the extension of the spiral piece, and when the second material outlet is opposite to the first material outlet, the material is thrown out. The scattering device is simple in structure, and the scattering amount can be accurately controlled.

Description

Throwing device and plant protection equipment

Technical Field

The invention relates to the technical field of plant protection equipment, in particular to a throwing device and plant protection equipment.

Background

With the gradual maturity of the control technology of the unmanned equipment, the unmanned equipment is applied to agricultural production and is responsible for various stages such as cultivation, management and collection. The throwing device loaded on the unmanned equipment greatly improves the operation efficiency on the premise of ensuring the operation effect, and is widely applied to throwing operation of seeds, chemical fertilizers, pesticides, fish and shrimp feeds and the like. The throwing device in the prior art has low control accuracy on the throwing amount and cannot meet the requirements of users.

Disclosure of Invention

The invention aims to provide a scattering device and plant protection equipment, which are simple in structure and high in scattering precision.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, there is provided a dispensing device comprising:

the shell is provided with a first material outlet;

the throwing assembly is rotationally arranged in the shell and comprises a material container and a spiral piece, the material container is provided with an accommodating cavity, the spiral piece is spirally wound on the inner wall of the material container along a material conveying direction, a material inlet and a second material outlet are arranged on the material container at intervals, the material conveying direction is the direction from the material inlet to the second material outlet, and the material inlet and the second material outlet are communicated with the accommodating cavity; the material container can rotate to a position where the second material outlet is communicated with the first material outlet;

and the driving mechanism is connected with the scattering assembly so as to drive the scattering assembly to rotate along a fixed axis.

As a preferred embodiment of the spreading device, the cross-sectional area of the receiving chamber increases in the direction of material transport.

As a preferred embodiment of the spreading device, the cross-sectional area of the receiving space is uniform in the material conveying direction.

As a preferred scheme of the throwing device, a middle shaft is arranged at the axis position in the material container, one end of the spiral piece is tightly attached to the inner wall of the material container, and the other end of the spiral piece is tightly attached to the middle shaft.

As a preferred scheme of the throwing device, the inner wall of the shell is further provided with a retaining ring for resisting materials, the retaining ring is provided with a third material outlet, and the third material outlet is opposite to the first material outlet.

As a preferable scheme of the throwing device, the retainer ring comprises a retainer ring body and a plurality of flexible protrusions, and the flexible protrusions are arranged on the inner wall of the retainer ring body at intervals; the retainer ring body is connected to the inner wall of the shell, and the flexible bulge abuts against the outer wall of the material container.

As a preferable scheme of the throwing device, the second material outlet is provided with a material guide plate, the length of the material guide plate extends along the radial direction of the accommodating cavity, and the material guide plate is located inside the accommodating cavity.

As a preferable scheme of the throwing device, a hollow guide cylinder is arranged at the first material outlet, a first end of the guide cylinder is connected with the outer wall of the shell, a second end of the guide cylinder is arranged outside the shell in a suspended mode, and the first end and the second end are arranged oppositely.

As a preferable scheme of the throwing device, the axis of the guide cylinder is arranged at an acute angle with the horizontal plane, and the first end is lower than the second end.

As a preferred scheme of the throwing device, at least two arc-shaped plates are uniformly distributed on the inner wall of the guide cylinder in an annular mode.

As a preferred embodiment of the device, the housing and the dispensing assembly are connected by a bearing.

As a preferable scheme of the throwing device, the material inlet is arranged on an end face of one end of the material container, the throwing device is further provided with a feeding pipe, one end of the feeding pipe is positioned outside the shell, and the other end of the feeding pipe is communicated with the material inlet.

As a preferred embodiment of the throwing device, a first cover plate is arranged on the end face of the housing adjacent to the material inlet, and the feeding pipe is arranged on the first cover plate.

As a preferred embodiment of the dispensing device, the housing comprises a first group of segments and a second segment connected to each other, the driving mechanism is accommodated in the second segment, and the material container is accommodated in the first group of segments and the second segment, or the material container is accommodated in the first group of segments.

As a preferable scheme of the throwing device, the first material outlet is arranged at the first group of sections or the second section; or the first group of sections are provided with a rear half groove, the second section is provided with a front half groove, and the rear half groove and the front half groove form the first material outlet.

In a second aspect, a plant protection device is provided, which comprises the above-mentioned throwing device.

The invention has the beneficial effects that:

in the rotating process of the throwing assembly, the materials are mainly distributed near the inner wall of the material container under the action of centrifugal force, and due to the guiding action of the spiral pieces, the materials gradually move to the side where the second material outlet is located along the extension of the spiral pieces. When the materials move to the second material outlet of the material container and the second material outlet is opposite to the first material outlet, the materials are thrown out. The propelling quantity of the material in unit time is accurately determined by the screw pitch of the spiral sheet. The larger the pitch is, the larger the propelling quantity of the material in unit time is; and vice versa. The throwing assembly is driven by the driving mechanism to rotate, so that the rotating speed of the throwing assembly is accurately controlled, the opposite arrangement time of the first material outlet and the second material outlet is always the same, and the total amount of thrown materials is the same when the first material outlet and the second material outlet are opposite arrangement each time. Therefore, the invention achieves the purpose of accurately controlling the throwing amount through the rotary throwing assembly.

Drawings

FIG. 1 is a schematic structural diagram of a dispensing device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a dispensing device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a dispensing assembly according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

FIG. 6 is an enlarged view of a portion of FIG. 1 at B;

FIG. 7 is a schematic view of another embodiment of a dispensing device;

FIG. 8 is a side view of the dispensing device of FIG. 7;

fig. 9 is a sectional view taken along line D-D in fig. 8.

In the figure:

1. a housing;

11. a first material outlet; 111. a guide cylinder; 112. an arc-shaped plate;

12. a barrel; 121. a second stage; 122. a middle section; 123. a first stage;

13. a first cover plate; 14. a second cover plate; 15. a fixed shaft;

2. a throwing assembly; 21. a material container; 22. a spiral sheet; 23. a second material outlet; 24. an accommodating chamber; 25. a material guide plate; 26. an intermediate shaft;

3. a retainer ring; 31. a retainer ring body; 32. a flexible protrusion; 33. a third material outlet;

4. a drive mechanism; 41. a drive plate; 42. a drive member;

5. a bearing;

6. a feed pipe; 61. a pipe body is arranged; 62. a lower pipe body;

7. a support mechanism; 71. a support; 72. a base plate.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, the terms of orientation such as "upper", "lower", "left", "right", "inner" and "outer" are used in the case where no description is made on the contrary, and these terms of orientation are used for easy understanding, and thus do not limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the invention provides a throwing device which is used for being connected to plant protection equipment such as an unmanned aerial vehicle, an agricultural tractor and the like to realize material throwing, wherein the material can be granular plant seeds, agricultural fertilizers, agricultural chemicals and other substances.

As shown in fig. 1 and 2, the present embodiment provides a dispensing device including a housing 1, a dispensing assembly 2, and a drive mechanism 4. The driving mechanism 4 is connected with the scattering assembly 2 and is used for driving the scattering assembly 2 to rotate along a fixed axis. The housing 1 is adapted to receive and support the dispensing assembly 2 to facilitate mounting of the dispensing assembly 2 on a plant protection apparatus.

The spreading device further comprises a supporting mechanism 7, the supporting mechanism 7 comprises two brackets 71 and a bottom plate 72, the bottom plate 72 is fixed on the plant protection equipment, the lower ends of the two brackets 71 are connected to the bottom plate 72, and the upper ends of the two brackets 71 are respectively connected with the two ends of the shell 1 to support the shell 1. Of course, in other embodiments, the supporting mechanism 7 may also be in other forms, and is not limited herein.

In order to continuously supply the throwing assembly 2 with material, the throwing device further comprises a feed pipe 6. Preferably, the feeding pipe 6 comprises an upper pipe body 61 and a lower pipe body 62 which are communicated up and down, and the upper pipe body 61 and the lower pipe body 62 are connected in an obtuse angle, so that the inner walls of the upper pipe body 61 and the lower pipe body 62 are smoothly connected. The upper pipe body 61 can be vertically arranged, and the upper pipe body 61 can also be of a funnel-shaped structure, so that blanking is facilitated. The lower cylinder 12 is arranged obliquely, so that the material can flow into the scattering assembly 2 conveniently.

As shown in fig. 2, the housing 1 includes a cylinder 12 opened front and rear, a first cover 13, and a second cover 14. The first cover 13 is fixed to the rear end of the cylinder 12, and the second cover 14 is fixed to the front end of the cylinder 12. Preferably, a step portion is provided in the cylinder 12 at a position close to the rear end, and the step portion may be used to position the first cover 13, and the first cover 13 abuts against the step portion. The feed pipe 6 is fixed in the middle part of first apron 13, and behind the first apron 13 of wearing to locate of one end of feed pipe 6, with shed subassembly 2 intercommunication.

The cylinder 12 is preferably a cylinder, and the first cover 13 and the second cover 14 are circular plates. Of course, the cylinder 12 may also be in other shapes such as a rectangular parallelepiped, a hexagonal prism, etc., the shapes of the first cover plate 13 and the second cover plate 14 are changed accordingly, and the cover is disposed at the opening of the cylinder 12, which is not limited herein.

For ease of processing, the barrel 12 includes a first set of segments and a second segment 121 connected. Preferably, to facilitate the manufacture of the first set of segments, the first set of segments comprises a first segment 123 and a middle segment 122, wherein the first segment 123, the middle segment 122 and the second segment 121 are connected in sequence. The first cover plate 13 covers the rear end of the first section 123, the second cover plate 14 covers the front end of the second section 121, and the driving mechanism 4 is fixed on the second cover plate 14 and accommodated in the second section 121. Preferably, one bracket 71 is integrally formed with the first segment and the other bracket 71 is integrally formed with the second segment 121 to improve the efficiency of the installation of the dispensing device. Further, the bracket 71 is integrally formed with the first section 123. Of course, in other embodiments, the bracket 71 and the first segment 123 and the second segment 121 may also be connected by other means such as a connector connection or an interference fit, and are not limited herein.

Preferably, the drive mechanism 4 comprises a drive plate 41 and a driver 42. The driving member 42 may be a motor, etc., the driving member 42 is fixed on the second cover plate 14, an output shaft of the driving member 42 is fixedly connected with the driving plate 41, the driving plate 41 is fixed with the scattering assembly 2, and the driving member 42 drives the scattering assembly 2 to rotate through the driving plate 41.

In this embodiment, in order to allow the material in the throwing assembly 2 to be thrown out of the housing 1, the housing 1 is provided with a first material outlet 11. Preferably, the front end of the middle section 122 of the first group of sections is provided with a rear half groove, the rear end of the second section 121 is provided with a front half groove, and after the middle section 122 is connected with the first section 123, the rear half groove and the front half groove form the first material outlet 11. This form of the first material outlet 11 facilitates processing. At this time, the material container 21 is accommodated in the first and second sections 121. Of course, in other embodiments, the first material outlet 11 may be formed on the first set of sections or on the second section 121, and the material container 21 is accommodated in the first set of sections.

As shown in fig. 1 and 2, the scattering assembly 2 is rotatably disposed within the housing 1. As shown in fig. 2, the housing 1 and the dispensing assembly 2 are preferably connected by a bearing 5 for improved rotational stability of the dispensing assembly 2. In the present embodiment, an annular support plate is disposed in the first section 123 of the housing 1, and a plurality of fixing shafts 15 are disposed on a side of the annular support plate close to the first cover plate 13, for example, two, three, four or more fixing shafts 15 may be uniformly distributed along the circumference of the annular support plate. Each fixed shaft 15 is sleeved with a bearing 5, a plurality of bearings 5 surround to form an installation space, and the scattering assembly 2 is arranged in the installation space and is abutted to the outer ring of the bearing 5. The arrangement of the bearing 5 changes the sliding friction between the scattering assembly 2 and the housing 1 into rolling friction, reduces the friction force between the two, reduces the driving force of the driving mechanism 4, and improves the stability of the scattering assembly 2.

Of course, in other embodiments, only one bearing may be provided, the inner ring of the bearing is sleeved outside the scattering assembly 2, and the outer ring of the bearing is connected with the inner wall of the housing 1, so as to realize the relative rotation of the housing 1 and the scattering assembly 2.

As shown in fig. 3 and 4, the scattering assembly 2 includes a material container 21 and a spiral piece 22, the material container 21 having a receiving chamber 24, the spiral piece 22 spirally wound around an inner wall of the material container 21 in a material conveying direction. The containing cavity 24 is mainly used for containing materials, and the spiral piece 22 is used for guiding the materials. Specifically, the spiral piece 22 is disposed on the inner wall of the material container 21, for example, the spiral piece 22 may be connected to the inner wall of the material container 21 by welding or screwing; the material container 21 and the spiral piece 22 can be integrally formed in a mode of injection molding and the like; the throwing assembly 2 may be divided into two symmetrical parts along its axis, and the two parts are fixedly connected by welding or connecting members, and the like, which is not limited herein.

As shown in fig. 2 and 4, the material container 21 is provided with a material inlet and a second material outlet 23 at intervals, and both the material inlet and the second material outlet 23 are communicated with the accommodating cavity 24. The material container 21 is rotatable to a position where the second material outlet 23 communicates with the first material outlet 11. It will be appreciated that the material transport direction is the direction of the material inlet towards the second material outlet 23.

Preferably, a material inlet is provided on an end surface of one end of the material container 21, one end of the feed pipe 6 is located outside the housing 1, and the other end is communicated with the material inlet to introduce the material into the receiving chamber 24. Preferably, the first cover plate 13 is disposed on an end surface adjacent to the material inlet, for example, one end of the cylinder 12 is the material inlet, and the first cover plate 13 covers the material inlet.

It will be appreciated that one end of the material container 21 is a feeding end, the other end is a discharging end, the material container 21 and the spiral pieces 22 extend from the feeding end to the discharging end of the material container 21, the feeding pipe 6 is connected with the feeding end of the material container 21, and the second material outlet 23 is opened at the discharging end.

During rotation of the scattering assembly 2, the material is distributed under centrifugal force mainly near the inner wall of the material container 21, and due to the guiding action of the flights 22, the material gradually moves along the extension of the flights 22 to the side of the second material outlet 23. When the material moves to the second material outlet 23 of the material container 21 and the second material outlet 23 is arranged opposite to the first material outlet 11, the material is thrown out. The amount of material propelled per unit time is precisely determined by the pitch of the flights 22. The larger the pitch is, the larger the propelling quantity of the material in unit time is; and vice versa. Because the throwing assembly 2 is driven by the driving mechanism 4 to rotate, the rotating speed of the throwing assembly 2 is accurately controlled, the opposite arrangement time of the first material outlet 11 and the second material outlet 23 is always the same, and the total amount of the thrown materials is the same when the first material outlet 11 and the second material outlet 23 are oppositely arranged each time. Therefore, the present embodiment achieves the purpose of precisely controlling the throwing amount through the rotary throwing assembly 2.

Preferably, the cross-sectional area of the accommodating cavity 24 gradually increases along the conveying direction of the materials, for example, the accommodating cavity 24 has a conical structure. The material is by the in-process that the feed end removed the discharge end gradually, and the centrifugal force that receives increases gradually, and the linear velocity is bigger and bigger, and consequently, the structure that holds chamber 24 helps improving the initial velocity when the material flies out. Of course, in other embodiments, it is also possible that the cross-sectional area of the receiving chamber 24 is uniform in the conveying direction of the material.

Preferably, the material container 21 has a conical structure, so as to form a receiving cavity 24 with a conical structure. Of course, in other embodiments, it is also possible that the outer wall of the material container 21 forms a cylindrical structure and the inner wall encloses a conical structure, i.e. the wall thickness of the material container 21 decreases from the feeding end to the discharging end. The material container 21 may have another structure as long as the accommodating chamber 24 having a conical structure is opened.

As shown in fig. 4 and 5, preferably, to further increase the speed of the materials as they fly out, the second material outlet 23 is provided with a guide plate 25, the length of the guide plate 25 extends in the radial direction of the accommodating chamber 24, and the guide plate 25 is located inside the accommodating chamber 24. After the material moves to the end of the spiral piece 22, the material is guided by the material guide plate 25, and the moving direction of the material is changed from the spiral direction of the spiral piece 22 to the tangential direction, so that the linear speed of the material to be flown out is further increased, and the spreading range of the material is improved.

As shown in fig. 1 and 6, preferably, a hollow guide cylinder 111 is provided at the first material outlet 11, and the guide cylinder 111 can guide the material to optimize the spreading range of the material. The first end of guide cylinder 111 is connected with the outer wall of housing 1, and the second end of guide cylinder 111 is arranged outside housing 1 in the air. It will be appreciated that the first end is disposed opposite the second end.

Furthermore, the guiding cylinder 111 is disposed at an acute angle with the horizontal plane, and the first end is lower than the second end. The movement track of the material is a parabola, the height of the vertex of the parabola can be increased by the guide cylinder 111 which is obliquely arranged, the retention time of the material in the air is increased, the scattering distance of the material is increased, and the scattering range of the material is further expanded. The guide cylinder 111 may be a cylinder, a rectangular parallelepiped cylinder, or other polyhedral cylinder as long as it can guide the material.

In this embodiment, guide cylinder 111 is formed by two semicircular arc boards, and one of them semicircular arc board is connected with latter half groove, and another semicircular arc board is connected with former half groove, and after middle section 122 and first section 123 were connected, two semicircular arc board concatenations formed first material export 11. In other embodiments, the guide cylinder 111 may not be disposed to be inclined upward, but the guide cylinder 111 may have a horn shape, and a small-section end of the guide cylinder 111 is connected to the housing 1.

As shown in fig. 6, two arc plates 112 are uniformly distributed on the inner wall of the guide cylinder 111. Preferably, both arcuate plates 112 are curved downward, with the inner sides of the arcuate plates 112 facing downward. The arcuate plate 112 may change and reduce the direction and speed of movement of the portion of material. If the arcuate plate 112 is not provided, all material will fly out at maximum velocity and less material will fall in the area adjacent the material outlet 11, resulting in an uneven distribution of material falling on the ground. After the arc-shaped plate 112 is arranged, some materials can collide with the arc-shaped plate 112, and the materials colliding with the arc-shaped plate 112 rebound and fall off or fly out along the arc line of the lower surface of the arc-shaped plate 112 and fall at a closer position. The material throwing area distribution can be more uniform. Of course, in other embodiments, the number of the arc-shaped plates 112 may also be more than two, for example, three, four or more arc-shaped plates 112 may be provided, a plurality of arc-shaped plates 112 are annularly and uniformly distributed on the inner wall of the guide cylinder 111, and the arc-shaped plates 112 may be bent downwards or upwards or bent towards other directions, as long as they can collide with a part of the material to change the moving direction or speed of the material.

As shown in fig. 2, in order to make the scattering assembly 2 easy to rotate, a space is provided between the scattering assembly 2 and the housing 1, and when the scattering assembly 2 rotates until the second material outlet 23 is not arranged opposite to the first material outlet 11, in order to prevent the material from entering the housing 1 from the second material outlet 23, the inner wall of the housing 1 is further provided with a retaining ring 3 for retaining the material. The retainer ring 3 can fill the space between the scattering assembly 2 and the housing 1, and plays a role of stopping materials. The retainer ring 3 is provided with a third material outlet 33, and the third material outlet 33 is arranged opposite to the first material outlet 11, so that when the scattering assembly 2 rotates to the position that the second material outlet 23 is arranged opposite to the first material outlet 11, the material can be scattered; on the contrary, the material is retained by the collar 3 and remains inside the throwing assembly 2. Preferably, the first material outlet 11 is larger than or equal to the size of the third material outlet 33, and when the rotation speed of the throwing assembly 2 is high, the third material outlet 33 can enlarge the first material outlet 11, so that the throwing of the materials is facilitated.

It will be appreciated that the width of the collar 3 may be slightly greater than the width of the second material outlet 23, e.g. 5mm-10mm greater than the width of the second material outlet 23, so that the collar 3 neither interferes with the rotation of the dispensing assembly 2, but also acts as a stop for the material.

Preferably, in order to further reduce the friction force between the retainer ring 3 and the scattering assembly 2 and improve the smoothness of rotation of the scattering assembly 2, the retainer ring 3 comprises a retainer ring body 31 and a plurality of flexible protrusions 32, and the plurality of flexible protrusions 32 are arranged on the inner wall of the retainer ring body 31 at intervals. The flexible projections 32 act as stops for the material. The flexible protrusions 32 are made of rubber or plastic, and may be made of metal wire, which is not limited herein. Optionally, the retainer body 31 is connected to the inner wall of the housing 1 to fix the retainer 3, and the flexible protrusion 32 abuts against the outer wall of the material container 21 to stop the material.

The overall working principle of the scattering device provided by the embodiment is as follows: the material is guided into the throwing assembly 2 from the feeding pipe 6, the linear velocity of the material is continuously increased in the rotating process of the throwing assembly 2, and when the material moves to the second material outlet 23 of the throwing assembly 2 and the second material outlet 23 is aligned with the first material outlet 11, the material is thrown out. The distance the material is thrown depends on the initial velocity of the material being thrown and whether it hits the arcuate plate 112. After being thrown out, the materials fall onto the ground under the action of gravity and air resistance and are uniformly distributed.

The throwing device provided by the embodiment can accurately control the throwing amount in real time by driving the rotary throwing assembly 2 by the driving mechanism 4. Meanwhile, the throwing device abandons a pneumatic structure, the first material outlet 11 and the second material outlet 23 are used for throwing the materials, the material guide plate 25 and the guide cylinder 111 can greatly improve the throwing distance, and the arc-shaped plate 112 can greatly improve the uniformity of material throwing.

The invention also provides plant protection equipment which comprises the throwing device. The plant protection equipment that this embodiment provided can improve the accuracy of material volume of scattering. The plant protection equipment can also comprise an equipment main body and a material box, wherein the material box is connected to the equipment main body and is communicated with the scattering device so as to provide materials for the scattering device. Plant protection equipment can be unmanned aerial vehicle etc. and also can be equipment such as tractor. For example, the scattering device can be connected with unmanned equipment through the supporting mechanism 7, and when the scattering device is installed on unmanned equipment such as unmanned aerial vehicles, the operation efficiency can be greatly improved.

In other embodiments, as shown in fig. 7 to 9, an intermediate shaft 26 is disposed at an axial position of the material container 21, and one end of the spiral piece 22 is closely attached to the inner wall of the material container 21, and the other end is closely attached to the intermediate shaft 26. It can be understood that the feeding pipe 6 is communicated with the space enclosed by the intermediate shaft 26 and the spiral piece 22, and the material spirally advances in the space enclosed by the intermediate shaft 26 and the spiral piece 22, and the design is to prevent the material at a higher position in the material container 21 from falling to a lower position in the material container 21 due to gravity when the material container 21 rotates at a slower speed, and the material cannot be conveyed from the side where the material inlet is located to the second material outlet 23.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dispensing device, comprising:

the shell is provided with a first material outlet;

2. A dispensing device as claimed in claim 1, wherein the cross-sectional area of the holding chamber increases progressively in the direction of material transport.

3. A dispensing device as claimed in claim 1, wherein the cross-sectional area of the receiving chamber is uniform in the direction of material transport.

4. The throwing device of claim 1 wherein an intermediate shaft is disposed along the axis of the material container, one end of the spiral piece being in close contact with the inner wall of the material container and the other end of the spiral piece being in close contact with the intermediate shaft.

5. The dispensing device of claim 1 wherein the inner wall of the housing further comprises a retainer ring for retaining the material, the retainer ring defining a third material outlet, the third material outlet being opposite the first material outlet.

6. The dispensing device of claim 5 wherein the retainer ring comprises a retainer ring body and a plurality of flexible projections spaced apart on an inner wall of the retainer ring body; the retainer ring body is connected to the inner wall of the shell, and the flexible bulge abuts against the outer wall of the material container.

7. The scattering device as claimed in claim 1, wherein the second material outlet is provided with a guide plate, the length of which extends in a radial direction of the receiving chamber, and the guide plate is located inside the receiving chamber.

8. The scattering device as claimed in any of claims 1-7, wherein a hollow guiding cylinder is provided at the first material outlet, a first end of the guiding cylinder is connected to the outer wall of the housing, a second end of the guiding cylinder is suspended outside the housing, and the first end is opposite to the second end.

9. A dispensing apparatus according to claim 8, wherein the axis of the guide cylinder is disposed at an acute angle to the horizontal and the first end is lower than the second end.

10. The dispensing device of claim 8 wherein the guide cylinder has at least two arcuate plates circumferentially disposed on an inner wall thereof.

11. The dispensing device of claim 1, wherein said housing and said dispensing assembly are connected by a bearing.

12. A dispensing device according to claim 1, wherein the material inlet is provided on an end face of one end of the material container, the dispensing device further being provided with a feed tube, one end of which is located outside the housing and the other end of which communicates with the material inlet.

13. A dispensing device as claimed in claim 12, wherein a first cover plate is provided on an end face of the housing adjacent the material inlet, the feed tube being provided on the first cover plate.

14. A dispensing device according to claim 1, wherein the housing comprises a first set of segments and a second segment connected, the drive mechanism being received in the second segment, the material container being received in the first set of segments and the second segment, or the material container being received in the first set of segments.

15. A dispensing device according to claim 14, wherein the first material outlet is provided in the first group of segments or the second segment; or

The first group of sections are provided with a rear half groove, the second group of sections are provided with a front half groove, and the rear half groove and the front half groove form the first material outlet.

16. Plant protection equipment, characterized in that it comprises a spreading device according to any of claims 1-15.