Fertilizer mixing and stirring device and use method thereof

Abstract

The invention provides a fertilizer mixing and stirring device and a use method thereof, the fertilizer mixing and stirring device comprises a tank body, a stirring unit pivotally connected in the tank body, and a driving part for driving the stirring unit to rotate, and the stirring unit comprises a rotating shaft, a support radially connected to the rotating shaft, and a first spiral plate and a second spiral plate connected to the support. The rotating diameter of the first spiral plate is smaller than that of the second spiral plate, the spiral directions of the first spiral plate and the second spiral plate are opposite, and a radial stirring space is defined between the first spiral plate and the second spiral plate. The stirring unit comprises a plurality of stirring assemblies connected to an inner cavity of the tank body, a plurality of fixing shafts arranged in the radial direction are arranged in the tank body, the stirring assemblies are connected to the fixing shafts in a sleeving mode, and a driving assembly is arranged between the fixing shafts and the rotating shaft and drives the stirring assemblies to slide in the radial stirring space in a reciprocating mode. The material mixing effect is improved, material accumulation caused by the arrangement characteristic of the spiral plate is avoided, and then the fertilizer mixing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer mixing and stirring, and in particular to a fertilizer mixing and stirring device. The present invention also relates to a method for using the fertilizer mixing and stirring device. Background Art

[0002] Mixed fertilizer, also known as compound fertilizer, is obtained by mechanically mixing several single fertilizers, or a single fertilizer with a binary or ternary compound fertilizer. Sometimes some fillers can be added to improve the physical and chemical properties of the fertilizer, such as to prevent excessive acidification of mixed fertilizers made of ammonium nitrate and ordinary superphosphate. Its main functions are to improve soil fertility, promote crop growth, increase crop yields and improve the quality of agricultural products.

[0003] The production process of mixed fertilizer generally includes raw material preparation, mixing, granulation, drying and cooling, packaging and storage, etc. Among them, mixing the prepared raw materials is the key step in the production of mixed fertilizer. The product after mixing must ensure that the raw materials are evenly mixed to achieve the nutrient ratio designed in the formula.

[0004] If the fertilizer composition is uneven and the microorganisms and pathogens contained in the fertilizer are easy to reproduce, it may lead to a decrease in the quality of farmers' crops, and even affect the quality of crops in serious cases. Most of the existing fertilizer mixing equipment uses a ribbon mixer. Due to the setting structure of the ribbon, it is difficult to mix the materials in the middle evenly, especially for some materials with high viscosity or containing particles. The mixing uniformity is worse, and for materials with large density differences, stratification is easy to occur, which affects the stirring effect and the mixing quality of the fertilizer. Summary of the invention

[0005] In view of this, the present invention aims to provide a fertilizer mixing and stirring device to improve the stirring effect and mixing quality of the fertilizer.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A fertilizer mixing and stirring device comprises a tank body, a stirring unit pivotally connected in the tank body, and a driving part for driving the stirring unit to rotate;

[0008] The stirring unit comprises a rotating shaft, a bracket connected to the rotating shaft in a radial direction, and a first spiral plate and a second spiral plate connected to the bracket;

[0009] The rotation diameter of the first spiral plate is smaller than that of the second spiral plate, the spiral directions of the first spiral plate and the second spiral plate are opposite, and a radial stirring space is formed between the first spiral plate and the second spiral plate;

[0010] The stirring unit further comprises a plurality of stirring components connected to the inner cavity of the tank body, the tank body is provided with a plurality of radially arranged fixed shafts, and the stirring components are sleeved on the fixed shafts;

[0011] A driving assembly is provided between the fixed shaft and the rotating shaft, and the driving assembly drives the stirring assembly to slide back and forth in the radial stirring space.

[0012] Further, the stirring assembly includes a telescopic cylinder slidably connected to the fixed shaft, a retaining frame connected to the upper end of the telescopic cylinder, and a plurality of rotating units radially connected to the retaining frame;

[0013] A circular cavity is formed in the fixed shaft, and a sliding plug is also provided in the fixed shaft, the sliding plug divides the circular cavity into an upper cavity and a lower cavity, a ventilation pipeline is formed in the tank body, and the upper cavity is communicated with the ventilation pipeline;

[0014] The vent hole is connected to an external air source, and a flexible connecting piece is provided between the sliding plug and the retaining frame.

[0015] Furthermore, a telescopic rod extending toward the circular cavity is connected to the tank body, the other end of the telescopic rod is connected to the sliding plug, and one end of the retaining frame is connected to the telescopic rod;

[0016] An air supply pipe is arranged inside the telescopic rod, and a through vent hole is arranged on the telescopic rod, and the vent hole is communicated with the upper cavity.

[0017] Furthermore, a sealing plate is provided in the fixed shaft, an elastic member is provided between the sealing plate and the sliding plug, and a through hole for the flexible connecting member to pass through is provided on the sealing plate.

[0018] Furthermore, the driving assembly includes a first bevel gear sleeved on the rotating shaft, and a second bevel gear connected to one end of the telescopic tube, and the second bevel gear is meshedly connected with the first bevel gear.

[0019] Furthermore, the other end of the telescopic tube is pivotally connected to a third bevel gear;

[0020] The rotating unit comprises a toothed cylinder meshing with the third bevel gear for transmission, and a stirring head is provided at one end of the toothed cylinder away from the third bevel gear;

[0021] The toothed cylinder is pivotally connected to the retaining frame, and the third bevel gear is fixedly sleeved on the fixed shaft.

[0022] Furthermore, a receiving cavity is provided in the retaining frame, and the meshing portion between the third bevel gear and the toothed cylinder is provided in the receiving cavity;

[0023] A deep groove ball bearing is arranged between the toothed cylinder and the retaining frame.

[0024] Furthermore, the stirring head includes a guide shaft inserted into the toothed cylinder, a connecting sleeve connected to the outer end of the guide shaft, and a plurality of stirring blades connected to the connecting sleeve;

[0025] A deep groove ball bearing is provided between the guide shaft and the toothed cylinder.

[0026] Furthermore, a scraper is provided at one end of the bracket away from the rotating shaft, and the scraper abuts against the tank body;

[0027] The upper part of the tank body is provided with a plurality of feeding ports, the lower part of the tank body is provided with a discharging port, the discharging ports are provided with two hinged doors opposite to each other, and the tank body is provided with a cylinder for driving the hinged doors to pivot.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The fertilizer mixing and stirring device described in the present invention sets the diameters of the first spiral plate and the second spiral plate to different values ​​and makes the spiral directions of the two opposite, so that the materials are transported in opposite directions by the first spiral plate and the second spiral plate for mixing, and sets a stirring assembly and a driving assembly on the tank body, so that the rotating shaft drives the stirring assembly to slide back and forth in the radial stirring space while rotating, and radially mixes the materials between the first spiral plate and the second spiral plate, which not only improves the mixing effect of the materials, but also avoids the accumulation of materials caused by the characteristics of the spiral plate setting due to the radial sliding of the stirring assembly, thereby improving the movement smoothness of the stirring device, and is suitable for mixing different forms of solid waste and water-soluble fertilizers.

[0030] Another object of the present invention is to provide a method for using a fertilizer mixing and stirring device, wherein the method uses the fertilizer stirring device as described above for stirring, and the steps of using the method are as follows:

[0031] Step 1: feeding, transporting fertilizers of different proportions into the tank through a conveyor;

[0032] Step 2: stirring: start the driving unit, the driving unit drives the rotating shaft and the first spiral plate and the second spiral plate to rotate, and the fertilizer is driven to move axially along the rotating shaft to mix; at the same time, the driving component drives the stirring component to slide back and forth in the radial stirring space;

[0033] Step three, unloading, when step two continues for a preset time, the driving unit is stopped, the cylinder drives the hinged door to open, and the mixed fertilizer is unloaded to the entrance of the screw conveyor.

[0034] The method for using the fertilizer mixing and stirring device of the present invention only requires feeding according to the proportion, and fully automatic stirring is achieved by starting the driving unit, and no new power source is needed to achieve stirring of the material in the axial and radial directions of the rotating shaft, and the material is automatically unloaded after stirring without manual operation. In addition, during the stirring step, due to the reciprocating sliding of the stirring component and the conveying of materials at different heights in the directions of the first spiral plate and the second spiral plate, the materials in the radial stirring space are quickly mixed, which shortens the stirring and mixing time of the ribbon mixer in the prior art and can meet the needs of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the fertilizer mixing and stirring device according to an embodiment of the present invention from a first viewing angle;

[0037] Figure 2 A schematic diagram of the three-dimensional structure of the fertilizer mixing and stirring device according to an embodiment of the present invention from a second viewing angle;

[0038] Figure 3 This is a schematic diagram of the top view of the fertilizer mixing and stirring device according to an embodiment of the present invention;

[0039] Figure 4 for Figure 3 Schematic cross-sectional view at AA in the middle;

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating shaft, the first spiral plate, the second spiral plate, the bracket and the driving assembly according to the embodiment of the present invention;

[0041] Figure 6 It is a cross-sectional schematic diagram of the driving assembly, the fixed shaft, part of the tank body, and the rotating shaft according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the connection structure between the third bevel gear and the stirring assembly according to an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 1. Tank body; 2. Mixing unit; 3. Driving unit; 4. Driving assembly; 5. Sliding plug; 6. Flexible connector; 7. Telescopic rod; 8. Air supply pipe; 9. Sealing plate; 10. Elastic member; 11. Scraper; 12. Feeding port; 13. Hinged door; 14. Cylinder;

[0045] 101. fixed shaft; 102. ventilation pipeline;

[0046] 201, rotating shaft; 202, bracket; 203, first spiral plate; 204, second spiral plate; 205, stirring assembly;

[0047] 401, first bevel gear; 402, second bevel gear; 403, third bevel gear;

[0048] 701, vent;

[0049] 1011, circular cavity;

[0050] 2051, telescopic cylinder; 2052, retaining frame; 2053, rotating unit; 2054, toothed cylinder; 2055, stirring head;

[0051] 20521, accommodating chamber;

[0052] 20551. guide shaft; 20552. connecting sleeve; 20553. stirring blade. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0054] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] This embodiment relates to a fertilizer mixing and stirring device. As a whole, Figures 1 to 4As shown, the fertilizer mixing and stirring device comprises a tank body 1, a stirring unit 2 pivotally connected in the tank body 1, and a driving part 3 for driving the stirring unit 2 to rotate, wherein the stirring unit 2 comprises a rotating shaft 201, a bracket 202 radially connected to the rotating shaft 201, and a first spiral plate 203 and a second spiral plate 204 connected to the bracket 202. The rotation diameter of the first spiral plate 203 is smaller than that of the second spiral plate 204, the spiral directions of the first spiral plate 203 and the second spiral plate 204 are opposite, and a radial stirring space is formed between the first spiral plate 203 and the second spiral plate 204.

[0058] Among them, the stirring unit 2 also includes a plurality of stirring components 205 connected to the inner cavity of the tank body 1. A plurality of radially arranged fixed shafts 101 are provided in the tank body 1. The stirring components 205 are sleeved on the fixed shafts 101. A driving component 4 is provided between the fixed shafts 101 and the rotating shaft 201. The driving component 4 drives the stirring components 205 to slide back and forth in the radial stirring space.

[0059] The fertilizer mixing and stirring device of the present embodiment sets the diameters of the first spiral plate 203 and the second spiral plate 204 to different values ​​and makes the spiral directions of the two opposite, so that the materials are transported in opposite directions by the first spiral plate 203 and the second spiral plate 204 for mixing, and sets a stirring assembly 205 and a driving assembly 4 on the tank body 1, so that the rotating shaft 201 drives the stirring assembly 205 to slide back and forth in the radial stirring space while rotating, and radially mixes the materials between the first spiral plate 203 and the second spiral plate 204, which can not only improve the mixing effect of the materials, but also avoid the accumulation of materials caused by the characteristics of the spiral plate setting due to the radial sliding of the stirring assembly 205, thereby improving the movement smoothness of the stirring device, and is suitable for mixing different forms of solid waste and water-soluble fertilizers.

[0060] Based on the above overall introduction, Figures 1 to 4 As shown, as an exemplary structure of the fertilizer mixing device of this embodiment, the tank body 1 is formed into a horizontally placed cylindrical structure, a support frame is provided below both ends of the tank body 1, the driving part 3 is connected to one side of the tank body 1, and a mounting plate connected to the support frame is provided below the driving part 3 for support. The driving part 3 of this embodiment adopts a servo motor with a reducer. Bearing seats are provided on both sides of the rotating shaft 201, and the bearing seats are installed on both sides of the tank body 1.

[0061] As a preferred implementation mode, Figures 5 to 7As shown, the stirring assembly 205 includes a telescopic cylinder 2051 slidably connected to the fixed shaft 101, a retaining frame 2052 connected to the upper end of the telescopic cylinder 2051, and a plurality of rotating units 2053 radially connected to the retaining frame 2052. A circular cavity 1011 is formed in the fixed shaft 101, and a sliding plug 5 is also provided in the fixed shaft 101. The sliding plug 5 divides the circular cavity 1011 into an upper cavity and a lower cavity. A ventilation pipeline 102 is formed in the tank body 1. The upper cavity is connected to the ventilation pipeline 102. The ventilation hole 701 is connected to an external air source. A flexible connector 6 is provided between the sliding plug 5 and the retaining frame 2052.

[0062] Still Figures 5 to 7 As shown, the holder 2052 of this embodiment adopts a rectangular cuboid structure, the four rotating units 2053 are respectively connected to four different planes of the holder 2052, the fixed shaft 101 adopts a cylindrical structure, the circular cavity 1011 penetrates the fixed shaft 101 from top to bottom, the sliding plug 5 is made of rubber, and the external gas source injects gas into the upper cavity through the vent 701, thereby pushing the sliding plug 5 to move in the direction close to the rotating shaft 201. The flexible connector 6 of this embodiment adopts steel wire, and two steel wires are provided on both sides of the holder 2052, and the other end of the steel wire is fixedly connected to the sliding plug 5.

[0063] Preferably, if Figure 6 As shown, the tank body 1 is connected with a telescopic rod 7 extending toward the circular cavity 1011, the other end of the telescopic rod 7 is connected to the sliding plug 5, one end of the retaining frame 2052 is connected to the telescopic rod 7, an air supply pipe 8 is arranged inside the telescopic rod 7, and a through vent hole 701 is arranged on the telescopic rod 7, and the vent hole 701 is connected to the upper cavity. In order to improve the movement stability of the sliding plug 5, the telescopic rod 7 is arranged between the sliding plug 5 and the tank body 1, and the air supply pipe 8 adopts a telescopic hose. When the sliding plug 5 is driven to slide back and forth, the telescopic rod 7 plays a role in positioning and supporting.

[0064] In addition, if Figure 6 As shown, a sealing plate 9 is also provided in the fixed shaft 101, an elastic member 10 is provided between the sealing plate 9 and the sliding plug 5, and a circular hole is provided on the sealing plate 9 for the flexible connector 6 to penetrate. By providing the sealing plate 9, a sealed cavity is defined between the sealing plate 9 and the piston to avoid leakage and reduce the driving force of the gas. The sealing plate 9 of this embodiment is made of rubber material, and a rubber sleeve with a steel ring needs to be added at the circular hole, and the flexible connector 6 slides relative to the inner hole of the rubber sleeve. A through hole is formed on the rod wall of the telescopic rod 7 to connect the upper cavity and the air supply pipe 8, so as to facilitate inflation into the upper cavity.

[0065] As a preferred implementation mode, Figures 5 and 6As shown, the driving assembly 4 includes a first bevel gear 401 sleeved on the rotating shaft 201, and a second bevel gear 402 connected to one end of the telescopic tube, and the second bevel gear 402 is meshed and connected with the first bevel gear 401. By providing the first bevel gear 401 and the second bevel gear 402, the rotational power of the rotating shaft 201 is used to drive the rotating unit 2053 to rotate, without adding a power source, saving energy consumption.

[0066] In addition, if Figure 6 As shown, the other end of the telescopic tube of this embodiment is connected to the third bevel gear 403, and the rotating unit 2053 includes a toothed cylinder 2054 meshing with the third bevel gear 403. A stirring head 2055 is provided at one end of the toothed cylinder 2054 away from the third bevel gear 403, and the toothed cylinder 2054 is pivotally connected to the retaining frame 2052.

[0067] The specific process is as follows: the rotational power of the second bevel gear 402 is transmitted to the telescopic rod 7, and the telescopic rod 7 drives the retaining frame 2052 and the rotating unit 2053 to rotate. The toothed cylinder 2054 on the rotating unit 2053 is meshed with the third bevel gear 403 for transmission, so that the toothed cylinder 2054 not only rotates along the fixed axis 101 with the rotation of the retaining frame 2052, but also rotates along its own axis, so that the materials passing through the stirring assembly 205 can be fully mixed in the radial and axial directions of the tank body 1, and the uniform stirring effect is quickly achieved.

[0068] It is worth noting that the diameter of the second spiral plate 204 of this embodiment is larger than the diameter of the rotating shaft 201, and the difference between the two is between 10 mm and 20 mm, so as to avoid excessive accumulation of materials outside the rotating shaft 201 and cause blockage. The spiral assembly is arranged in the radial stirring space, and the first spiral plate 203 and the second spiral plate 204 are used to push the material along the axial direction of the tank body 1, and the overall stirring effect is achieved by stirring in the radial direction, without multiple and long-term stirring, thereby improving production efficiency.

[0069] Furthermore, if Figure 6 to Figure 7 As shown, a receiving cavity 20521 is provided in the retainer 2052, and the meshing portion between the third bevel gear 403 and the toothed cylinder 2054 is provided in the receiving cavity 20521 of the retainer 2052, and a deep groove ball bearing is provided between the toothed cylinder 2054 and the retainer 2052. A powder metallurgy bearing is provided between the retainer 2052 and the fixed shaft 101. Such an arrangement improves the smoothness and flexibility of the rotation of the toothed cylinder 2054.

[0070] In addition, if Figure 6 to Figure 7As shown, the stirring head 2055 includes a guide shaft 20551 inserted into a toothed cylinder 2054, a connecting sleeve 20552 connected to the outer end of the guide shaft 20551, and a plurality of stirring blades 20553 connected to the connecting sleeve 20552. A deep groove ball bearing is provided between the guide shaft 20551 and the toothed cylinder 2054. By providing the guide shaft 20551, support can be provided for the connecting sleeve 20552 for fixing the stirring blade 20553, thereby increasing the structural strength of the stirring blade 20553. In this embodiment, four stirring blades 20553 with circular shafts evenly distributed on the connecting sleeve 20552 are provided, and the height of each stirring blade 20553 is different, thereby increasing the stirring range.

[0071] Preferably, a scraper 11 is provided at one end of the bracket 202 away from the rotating shaft 201, and the scraper 11 abuts against the tank body 1. A plurality of feed ports 12 are provided at the upper part of the tank body 1, and a discharge port is provided at the lower part of the tank body 1. Two hinged doors 13 are provided opposite to the discharge port, and a cylinder 14 is provided on the tank body 1 to drive the hinged door 13 to pivot. The scraper 11 is usually arranged along the axial direction of the tank body 1, and the scraping of the scraper 11 can prevent the material from adhering to the side wall of the tank body 1. The hinged door 13 is driven to pivot by the cylinder 14 to realize automatic unloading, thereby meeting the automation requirements.

[0072] In addition, the present embodiment also relates to a method for using the fertilizer mixing and stirring device, which uses the fertilizer stirring device as described above for stirring, and the steps of use are as follows:

[0073] Step 1: First, you need to prepare various fertilizer raw materials, including fertilizers with different nutrient elements such as nitrogen, phosphorus, and potassium. These raw materials need to be inspected to ensure that their quality meets the requirements. Weigh the fertilizer raw materials of different ingredients according to a certain proportion, usually using weighing sensors and measuring instruments to ensure the accuracy of the mixing ratio. Feeding: The weighed fertilizer raw materials are transported to different feed ports through a conveyor and enter the tank 1;

[0074] Step 2: stirring. The driving unit 3 is started. The driving unit 3 drives the rotating shaft 201, the first spiral plate 203 and the second spiral plate 204 to rotate, and the fertilizer is driven to move axially along the rotating shaft 201 for mixing. At the same time, the driving component 4 drives the stirring component 205 to slide back and forth in the radial stirring space.

[0075] Step three, unloading. When step two continues for a preset time, the driving unit 3 is stopped, and the cylinder 14 drives the hinged door 13 to open, and the mixed fertilizer is unloaded to the entrance of the screw conveyor.

[0076] The method for using the fertilizer mixing and stirring device of this embodiment only requires feeding according to the proportion, and fully automatic stirring is achieved by starting the driving unit 3, and there is no need to add a new power source to achieve stirring of the material in the axial and radial directions of the rotating shaft 201, and automatic unloading after stirring without manual operation. In addition, during the stirring step, due to the reciprocating sliding of the stirring component 205, and the conveying of materials at different heights in the directions of the first spiral plate 203 and the second spiral plate 204, the materials in the radial stirring space are quickly mixed, which shortens the stirring and mixing time of the ribbon mixer in the prior art and can meet the needs of large-scale production.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fertilizer mixing and stirring device, characterized in that: It comprises a tank body (1), a stirring unit (2) pivotally connected inside the tank body (1), and a driving unit (3) for driving the stirring unit (2) to rotate; The stirring unit (2) comprises a rotating shaft (201), a bracket (202) radially connected to the rotating shaft (201), and a first spiral plate (203) and a second spiral plate (204) connected to the bracket (202); The rotation diameter of the first spiral plate (203) is smaller than that of the second spiral plate (204); the spiral directions of the first spiral plate (203) and the second spiral plate (204) are opposite; and a radial stirring space is formed between the first spiral plate (203) and the second spiral plate (204); The stirring unit (2) further comprises a plurality of stirring components (205) connected to the inner cavity of the tank body (1); a plurality of radially arranged fixed shafts (101) are provided in the tank body (1); and the stirring components (205) are sleeved on the fixed shafts (101); A driving assembly (4) is provided between the fixed shaft (101) and the rotating shaft (201), and the driving assembly (4) drives the stirring assembly (205) to slide back and forth in the radial stirring space.

2. The fertilizer mixing and stirring device according to claim 1, characterized in that: The stirring assembly (205) comprises a telescopic cylinder (2051) slidably connected to the fixed shaft (101), a retaining frame (2052) connected to the upper end of the telescopic cylinder (2051), and a plurality of rotating units (2053) radially connected to the retaining frame (2052); A circular cavity (1011) is formed in the fixed shaft (101), a sliding plug (5) is also provided in the fixed shaft (101), the sliding plug (5) divides the circular cavity (1011) into an upper cavity and a lower cavity, a ventilation pipeline (102) is formed in the tank body (1), and the upper cavity is connected to the ventilation pipeline (102); The vent hole (701) is connected to an external air source, and a flexible connecting piece (6) is provided between the sliding plug (5) and the retaining frame (2052).

3. The fertilizer mixing and stirring device according to claim 2, characterized in that: The tank body (1) is connected to a telescopic rod (7) extending toward the circular cavity (1011); the other end of the telescopic rod (7) is connected to the sliding plug (5); and one end of the retaining frame (2052) is connected to the telescopic rod (7); An air supply pipe (8) is provided inside the telescopic rod (7), and a through vent hole (701) is provided on the telescopic rod (7), wherein the vent hole (701) is communicated with the upper cavity.

4. The fertilizer mixing and stirring device according to claim 3, characterized in that: A sealing plate (9) is also provided inside the fixed shaft (101), an elastic member (10) is provided between the sealing plate (9) and the sliding plug (5), and a through hole for the flexible connecting member (6) to pass through is provided on the sealing plate (9).

5. The fertilizer mixing and stirring device according to claim 4, characterized in that: The driving assembly (4) comprises a first bevel gear (401) sleeved on the rotating shaft (201), and a second bevel gear (402) connected to one end of the telescopic tube, wherein the second bevel gear (402) is meshingly connected with the first bevel gear (401).

6. The fertilizer mixing and stirring device according to claim 4, characterized in that: The other end of the telescopic tube is pivotally connected to a third bevel gear (403); The rotating unit (2053) comprises a toothed cylinder (2054) meshing with the third bevel gear (403) for transmission, and a stirring head (2055) is provided at one end of the toothed cylinder (2054) away from the third bevel gear (403); The toothed cylinder (2054) is pivotally connected to the retaining frame (2052), and the third bevel gear (403) is fixedly sleeved on the fixed shaft (101).

7. The fertilizer mixing and stirring device according to claim 6, characterized in that: The retaining frame (2052) is provided with a receiving cavity (20521), and the meshing portion between the third bevel gear (403) and the toothed cylinder (2054) is provided in the receiving cavity (20521); A deep groove ball bearing is provided between the toothed cylinder (2054) and the retaining frame (2052).

8. The fertilizer mixing and stirring device according to claim 7, characterized in that: The stirring head (2055) comprises a guide shaft (20551) inserted into the toothed cylinder (2054), a connecting sleeve (20552) connected to the outer end of the guide shaft (20551), and a plurality of stirring blades (20553) connected to the connecting sleeve (20552); A deep groove ball bearing is provided between the guide shaft (20551) and the toothed cylinder (2054).

9. The fertilizer mixing and stirring device according to claim 1, characterized in that: A scraper (11) is provided at one end of the bracket (202) away from the rotating shaft (201), and the scraper (11) abuts against the tank body (1); The upper part of the tank body (1) is provided with a plurality of feed ports (12), the lower part of the tank body (1) is provided with a discharge port, the discharge port is provided with two hinged doors (13) opposite to each other, and the tank body (1) is provided with a cylinder (14) for driving the hinged doors (13) to pivot.

10. A method for using a fertilizer mixing and stirring device, characterized in that: The fertilizer stirring device according to claim 9 is used for stirring, and the use steps are as follows: Step 1: feeding, feeding fertilizers of different proportions into the tank (1) through a conveyor; Step 2: stirring, the driving unit (3) is started, the driving unit (3) drives the rotating shaft (201), the first spiral plate (203) and the second spiral plate (204) to rotate, and the fertilizer is driven to move axially along the rotating shaft (201) for mixing; at the same time, the driving component (4) drives the stirring component (205) to slide back and forth in the radial stirring space; Step three, unloading. When step two continues for a preset time, the driving unit (3) is stopped, and the cylinder (14) drives the hinged door (13) to open, and the mixed fertilizer is unloaded to the entrance of the screw conveyor.

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