Adjustable seed dressing device

Abstract

The utility model provides an adjustable seed dressing device. The adjustable seed dressing device comprises a tank body, a main shaft and a plurality of fan blades, the upper end of the tank body is connected with an end cover, and the end cover is provided with a feeding hole and is also connected with a surface cover for sealing the feeding hole; and the lower end of the tank body is provided with a discharge port and is also connected with a material blocking assembly for sealing the discharge port. The main shaft is coaxially arranged in the tank body and is in transmission connection with a rotation driving assembly. The multiple fan blades are arranged on the outer surface of the main shaft side by side in the vertical direction, and each fan blade is rotationally connected with the main shaft and connected with the main shaft through a locking structure. In actual use, the swing range of the fan blades in the vertical direction can be adjusted by rotating the fan blades, and then the gaps between the adjacent fan blades are adjusted so as to adapt to seeds of different specifications. According to the adjustable seed dressing device provided by the invention, the distance between the adjacent fan blades can be adjusted, so that the stability of the seed dressing effect on seeds of different specifications is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of seedling processing, and specifically relates to an adjustable seed mixing device. Background Art

[0002] Seed dressing is a method of treating plant seedlings. Specifically, it refers to mixing seeds with materials such as pesticides or micro-fertilizers so that the surface of the seeds is evenly covered with a layer of materials.

[0003] In the prior art, when performing seed mixing operations, seeds and materials are placed into a tank in proportion, and then the rotation of the shaft drives the fan blades to swing, so as to achieve the purpose of uniform mixing of the materials and seeds.

[0004] The inventors discovered that when dressing seeds of different sizes, to ensure effective seed dressing, the spacing between adjacent blades needs to be appropriately adjusted. Specifically, when dressing seeds with larger particle sizes, the blade spacing needs to be increased; when dressing seeds with smaller particle sizes, the blade spacing needs to be decreased. However, the rotating shaft and blades are typically fixedly connected, making them difficult to adjust. Consequently, the rotor cannot match seed dressing operations with different seed sizes and cannot guarantee optimal seed dressing results. Utility Model Content

[0005] An embodiment of the present application provides an adjustable seed dressing device, which is intended to adjust the spacing between adjacent fan blades to ensure the stability of the seed dressing effect for seeds of different specifications.

[0006] To achieve the above objectives, the technical solution adopted in this application is:

[0007] Provided is an adjustable seed dressing device, comprising:

[0008] The tank body is hollow inside and has an upward opening, and the upper end of the tank body is connected to an end cover suitable for closing the opening; the end cover is provided with a feed port, and the end cover is connected to a surface cover suitable for closing the feed port; the lower end of the tank body is provided with a discharge port, and the lower end surface of the tank body is connected to a blocking component suitable for closing or avoiding the discharge port;

[0009] a main shaft, coaxially disposed in the tank body and rotatably connected to the tank body and / or the end cover in an up-and-down direction; and the main shaft is also drivingly connected to a rotation drive assembly for driving the main shaft to rotate; and

[0010] A plurality of fan blades are arranged in parallel along the up and down directions on the outer surface of the main shaft, each of the fan blades is rotatably connected to the main shaft, and the rotation axis is parallel to the direction of the fan blade toward the main shaft; and each of the fan blades and the main shaft has a locking structure to connect the fan blade and the main shaft and limit the rotation of the fan blade relative to the main shaft.

[0011] In one possible implementation, the main shaft has a plurality of through holes spaced apart in the vertical direction and corresponding to the plurality of fan blades one by one; the fan blades have reserved holes extending toward the main shaft and communicating with the corresponding through holes, and an insertion rod is slidably inserted into the reserved holes;

[0012] In which, the insertion rod and the reserved hole both adopt a structure with a polygonal cross-section, and the outer peripheral wall of the insertion rod abuts the inner peripheral surface of the reserved hole to limit the rotation of the insertion rod relative to the fan blade; and, the insertion rod is coaxially connected to a connecting shaft suitable for passing through the through hole and extending out, and the locking structure is arranged between the connecting shaft and the main shaft to connect the connecting shaft and the main shaft and limit the rotation of the fan blade relative to the main shaft.

[0013] In a possible implementation, a first thread groove is formed on an outer end surface of the insertion rod facing away from the main shaft, and the locking structure includes:

[0014] a positioning member fixedly connected to a side of the main shaft facing away from the fan blades, and having a first alignment hole in communication with the through hole, wherein a tooth groove is formed on an inner peripheral wall of the first alignment hole;

[0015] a limiting gear, disposed at the protruding end of the connecting shaft, adapted to be inserted into or withdrawn from the tooth groove; and

[0016] a docking member, slidably connected to the outer side of the fan blade facing away from the main shaft, and having a second alignment hole adapted to communicate with the first thread groove, wherein a positioning bolt adapted to be threadedly connected to the first thread groove is inserted into the second alignment hole;

[0017] Among them, when the positioning bolt is threadedly connected to the first thread groove, the docking piece can limit the movement of the main shaft so that the limiting gear is embedded in the tooth groove and the rotation of the fan blade relative to the main shaft is limited by the positioning piece; when the positioning bolt is separated from the first thread groove, the insertion rod can move toward the main shaft so that the limiting gear exits the tooth groove and the fan blade can rotate with the insertion rod as the axis.

[0018] In one possible implementation, the main shaft is provided with a plurality of sunken grooves suitable for one-to-one corresponding embedding of the plurality of positioning members, and a second thread groove is provided at the bottom of each of the sunken grooves; the positioning member is provided with a through hole suitable for threaded connection with the second thread groove, and the positioning member also includes a mounting bolt inserted into the through hole, with its head abutting against the outer side surface of the positioning member and suitable for threaded connection with the second thread groove.

[0019] In a possible implementation, the fan blade further includes:

[0020] The protective shell is detachably connected to the end surface of the fan blade facing away from the main shaft to limit seeds and materials from falling on the docking piece or entering the first thread groove.

[0021] In one possible implementation, the upper end surface of the tank body has a lower ring body extending radially outward, and the end cover has an upper ring body extending radially outward; wherein the upper ring body and the lower ring body are respectively provided with a first special-shaped hole and a second special-shaped hole, the first special-shaped hole and the second special-shaped hole are interconnected, and the end cover further includes:

[0022] a limiting rod adapted to be inserted into the first and second interconnected special-shaped holes, with an upper end having an end adapted to be supported on the upper ring body and a lower end having a special-shaped portion adapted to pass through the first and second special-shaped holes;

[0023] When the special-shaped portion passes through the first special-shaped hole and the second special-shaped hole and the end head abuts the upper side surface of the upper ring body, the limiting rod can be rotated until the special-shaped portion abuts the lower side surface of the lower ring body to limit the movement of the limiting rod.

[0024] In one possible implementation, the lower ring body has multiple convex ball parts that correspond one-to-one to the multiple second special-shaped holes and are all made of elastic material. Each of the special-shaped parts has a concave ball groove suitable for the convex ball part to be embedded in, so as to limit the rotation of the limit rod.

[0025] In a possible implementation, the blocking component includes:

[0026] A slide, slidably connected to the lower side of the tank body, suitable for closing or avoiding the discharge port;

[0027] a fixing platform fixedly connected to the lower side of the tank body; and

[0028] a spring, disposed between the fixed platform and the sliding platform;

[0029] When the slide moves to avoid the discharge opening, the spring is elastically compressed to drive the slide to move to a position that closes the discharge opening.

[0030] Furthermore, the sliding platform is provided with an anti-bending rod extending toward the fixed platform and slidably connected to the fixed platform, and the anti-bending rod is inserted into the interior of the spring.

[0031] In a possible implementation, the upper end of the main shaft passes through the end cover and extends out, and the rotation drive assembly includes:

[0032] A driven gear coaxially connected to the upper end of the main shaft; and

[0033] The rotating motor is fixedly arranged on the end cover, and the power output axis is parallel to the main shaft; the power output end of the rotating motor is coaxially connected to a driving gear meshing with the driven gear, so that when the rotating motor is started, the driven gear rotates under the drive of the driving gear.

[0034] In a possible implementation, the adjustable seed dressing device further includes:

[0035] a timer, electrically connected to the rotation drive assembly;

[0036] The timer is used to record time, and when the recorded time is reached, the timer sends a stop signal to the rotation drive component to stop the main shaft from rotating.

[0037] In an embodiment of the present application, the feed port of the tank body can be closed by the end cover to prevent the seeds and materials from being discharged from the feed port after the seeds and materials are input into the tank body through the feed port; similarly, the discharge port of the tank body can be closed by the blocking component to prevent the seeds and materials from being discharged during the seed mixing process, and to enable the removal of materials and seeds in the tank body.

[0038] During the seed mixing process, the main shaft can be driven to rotate by rotating the drive assembly, so that multiple blades can swing simultaneously; based on this, by adjusting the rotation angle of the fan blades, the stirring range of the fan blades in the up and down directions can be changed, thereby adjusting the gap between adjacent fan blades.

[0039] Compared with the prior art, the adjustable seed dressing device provided in this embodiment can adjust the spacing between adjacent blades to ensure the stability of the seed dressing effect for seeds of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 This is one of the three-dimensional structural schematic diagrams of the adjustable seed dressing device provided in an embodiment of the present application;

[0042] Figure 2 This is a second schematic diagram of the three-dimensional structure of the adjustable seed dressing device provided in an embodiment of the present application;

[0043] Figure 3 This is a schematic diagram of the exploded structure of the end cover used in the embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the structure of the main shaft and fan blades in the assembled state used in the embodiment of the present application;

[0045] Figure 5 This is one of the schematic cross-sectional views of the main shaft and fan blades in the assembled state used in the embodiment of the present application;

[0046] Figure 6 This is a second schematic cross-sectional view of the main shaft and fan blades in an assembled state used in an embodiment of the present application;

[0047] Figure 7 An exploded schematic diagram of the locking structure used in an embodiment of the present application;

[0048] Figure 8 A schematic diagram of the three-dimensional structure of the main shaft used in the embodiment of the present application;

[0049] Figure 9 This is a schematic diagram of the exploded structure of the insertion rod and the docking member used in the embodiment of the present application;

[0050] Figure 10 A schematic diagram of the exploded structure of the fan blade used in the embodiment of the present application;

[0051] Figure 11 This is a schematic diagram of the exploded structure of the positioning member and the limiting gear used in the embodiment of the present application;

[0052] Figure 12 This is a schematic diagram of the three-dimensional structure of the tank body used in the embodiment of the present application;

[0053] Figure 13 This is one of the structural schematic diagrams of the upper ring body and the lower ring body used in the embodiment of the present application under the explosion perspective;

[0054] Figure 14 This is a second structural diagram of the upper ring body and the lower ring body used in the embodiment of the present application from an explosion perspective;

[0055] Explanation of reference numerals: 1, tank body; 11, end cover; 111, feed port; 112, surface cover; 113, upper ring body; 1131, first special-shaped hole; 12, discharge port; 13, lower ring body; 131, second special-shaped hole; 132, convex ball portion; 14, limit rod; 141, end head; 142, special-shaped portion; 1421, concave ball groove; 2, main shaft; 21, through hole; 22, sinking groove; 221, second thread groove; 3, fan blade; 31, reserved hole; 32, insertion rod; 321, connecting shaft; 3 22. First thread groove; 33. Protective shell; 4. Blocking assembly; 41. Slide; 411. Anti-bending rod; 42. Fixed platform; 43. Spring; 5. Rotation drive assembly; 51. Driven gear; 52. Rotating motor; 521. Driving gear; 6. Locking structure; 61. Positioning piece; 611. First alignment hole; 612. Tooth groove; 613. Through hole; 614. Mounting bolt; 62. Limiting gear; 63. Docking piece; 631. Second alignment hole; 632. Positioning bolt; 7. Timer. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0057] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0058] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0060] Please also refer to Figures 1 to 14 The adjustable seed dressing device provided in the present application is now described. The adjustable seed dressing device proposed in the present application comprises a tank body 1, a main shaft 2 and a plurality of fan blades 3.

[0061] The tank body 1 has a hollow interior and an upward opening, and an end cap 11 suitable for closing the opening is connected to the upper end of the tank body 1 .

[0062] The end cover 11 is provided with a feed port 111 which passes through in the up-down direction, and is connected to a surface cover 112 which is suitable for closing the feed port 111 ; when material needs to be discharged, the surface cover 112 is opened to open the feed port 111 .

[0063] A discharge port 12 is provided at the lower end of the tank body 1 , and a blocking component 4 suitable for closing or avoiding the discharge port 12 is connected to the lower end surface of the tank body 1 ; when material needs to be recycled, the discharge port 12 can be opened by adjusting the blocking component 4 .

[0064] The main shaft 2 is coaxially disposed within the tank body 1 and is vertically rotatably connected to the tank body 1 and / or the end cap 11. Specifically, the main shaft 2 may be connected to the inner bottom surface of the tank body 1, the end cap 11, or both the end cap 11 and the tank body 1. The main shaft 2 is also drivingly connected to a rotation drive assembly 5 for driving its rotation.

[0065] Multiple fan blades 3 are arranged in parallel along the up and down directions on the outer surface of the main shaft 2, each fan blade 3 is rotatably connected to the main shaft 2, and the rotation axis is parallel to the direction of the fan blade 3 toward the main shaft 2; and, each fan blade 3 and the main shaft 2 have a locking structure 6; in actual use, the fan blade 3 and the main shaft 2 can be connected by the locking structure 6, thereby limiting the rotation of the fan blade 3 relative to the main shaft 2.

[0066] In the embodiment of the present application, the feed port 111 of the tank body 1 can be closed by the end cover 11 to prevent the seeds and materials from being discharged from the feed port 111 after the seeds and materials are input into the tank body 1 through the feed port 111; similarly, the discharge port 12 of the tank body 1 can be closed by the blocking component 4 to prevent the seeds and materials from being discharged during the seed mixing process, and to enable the removal of materials and seeds in the tank body 1.

[0067] During the seed mixing process, the main shaft 2 can be driven to rotate by rotating the drive assembly 5, so that multiple blades 3 swing simultaneously; based on this, by adjusting the rotation angle of the blade 3, the stirring range of the blade 3 in the up and down directions can be changed, thereby adjusting the gap between adjacent blades 3.

[0068] Compared with the prior art, the adjustable seed dressing device provided in this embodiment can adjust the spacing between adjacent blades 3 to ensure the stability of the seed dressing effect for seeds of different specifications.

[0069] In some embodiments, as Figures 5 to 8 As shown, the main shaft 2 has a plurality of through holes 21 spaced apart in the up and down directions and corresponding to the plurality of fan blades 3 one by one; the fan blades 3 have a reserved hole 31 passing through the main shaft 2 and communicating with the corresponding through holes 21, and an insertion rod 32 is slidably inserted into the reserved hole 31.

[0070] Both the insertion rod 32 and the reserved hole 31 have a polygonal cross-section, and the outer peripheral wall of the insertion rod 32 abuts the inner peripheral surface of the reserved hole 31 to limit the rotation of the insertion rod 32 relative to the fan blade 3; and, the insertion rod 32 is coaxially connected to a connecting shaft 321 suitable for passing through the through hole 21 and extending out, and a locking structure 6 is arranged between the connecting shaft 321 and the main shaft 2 to connect the connecting shaft 321 and the main shaft 2 and limit the rotation of the fan blade 3 relative to the main shaft 2.

[0071] That is to say, when the insertion rod 32 rotates, the fan blade 3 will also rotate synchronously; based on this, due to the plug-in relationship between the connecting shaft 321 and the through hole 21, the rotational connection between the insertion rod 32 and the main shaft 2 can be achieved, and then the rotational connection between the fan blade 3 and the main shaft 2 can be achieved.

[0072] In some embodiments, as Figure 6 and Figure 7 As shown, a first thread groove 322 is formed on the outer end surface of the insert rod 32 facing away from the main shaft 2 , and the locking structure 6 includes a positioning member 61 , a limiting gear 62 and a docking member 63 .

[0073] The positioning member 61 is fixedly connected to the side of the main shaft 2 facing away from the fan blades 3 and has a first alignment hole 611 communicating with the through hole 21 . A tooth groove 612 is formed on the inner peripheral wall of the first alignment hole 611 .

[0074] The limiting gear 62 is provided at the protruding end of the connecting shaft 321 so as to be adapted to be embedded in or withdrawn from the tooth groove 612 ; when the limiting gear 62 is embedded in the tooth groove 612 , the relative rotation between the positioning member 61 and the connecting shaft 321 can be limited.

[0075] The docking piece 63 is slidably connected to the outer side of the fan blade 3 facing away from the main shaft 2, and has a second alignment hole 631 suitable for communicating with the first thread groove 322. A positioning bolt 632 suitable for threaded connection with the first thread groove 322 is inserted into the second alignment hole 631.

[0076] When the positioning bolt 632 is threadedly connected to the first thread groove 322 , the docking member 63 can limit the movement of the main shaft 2 so that the limiting gear 62 is embedded in the tooth groove 612 and the rotation of the fan blade 3 relative to the main shaft 2 is limited by the positioning member 61 .

[0077] When the positioning bolt 632 is separated from the first thread groove 322 , the insertion rod 32 can move toward the main shaft 2 so that the limiting gear 62 exits the tooth groove 612 and the fan blade 3 can rotate around the insertion rod 32 as the axis.

[0078] In some embodiments, as Figure 7 and Figure 8 As shown, the main shaft 2 is provided with a plurality of sinking grooves 22 suitable for the plurality of positioning members 61 to be embedded in a one-to-one correspondence, and a second thread groove 221 is provided at the bottom of each sinking groove 22 .

[0079] The positioning member 61 is provided with a through hole 613 suitable for threaded connection with the second thread groove 221 , and the positioning member 61 further includes a mounting bolt 614 inserted into the through hole 613 , with its head abutting against the outer side surface of the positioning member 61 and suitable for threaded connection with the second thread groove 221 .

[0080] In some embodiments, as Figure 6 As shown, the fan blade 3 also includes a protective shell 33, which is detachably connected to the end face of the fan blade 3 facing away from the main shaft 2 through bolts and nuts to limit seeds and materials from falling on the docking piece 63 or entering the first thread groove 322.

[0081] In some embodiments, as Figure 13 and Figure 14 As shown, the upper end surface of the tank body 1 has a lower ring body 13 extending radially outward, and the end cover 11 has an upper ring body 113 extending radially outward.

[0082] The upper ring body 113 and the lower ring body 13 are respectively provided with a first special-shaped hole 1131 and a second special-shaped hole 131 , and the first special-shaped hole 1131 and the second special-shaped hole 131 are connected to each other.

[0083] Based on this, the end cover 11 also includes a limiting rod 14, which is suitable for being inserted into the first special-shaped hole 1131 and the second special-shaped hole 131 that are connected to each other, and its upper end has an end head 141 suitable for supporting on the upper ring body 113, and its lower end has a special-shaped portion 142 suitable for passing through the first special-shaped hole 1131 and the second special-shaped hole 131.

[0084] When the special-shaped portion 142 abuts the upper side surface of the upper ring body 113 through the first special-shaped hole 1131 and the second special-shaped hole 131 and the end head 141, the limiting rod 14 can be rotated until the special-shaped portion 142 abuts the lower side surface of the lower ring body 13 to limit the movement of the limiting rod 14.

[0085] In some embodiments, as Figure 13 and Figure 14 As shown, the lower ring body 13 has a plurality of convex ball portions 132 corresponding one-to-one to the plurality of second special-shaped holes 131, and each of the convex ball portions 132 is made of elastic material. Each special-shaped portion 142 has a concave ball groove 1421 suitable for the convex ball portion 132 to be embedded in, so as to limit the rotation of the limit rod 14 under non-human force.

[0086] In some embodiments, as Figure 2 As shown, the blocking assembly 4 includes a sliding platform 41 , a fixed platform 42 and a spring 43 .

[0087] The slide 41 is slidably connected to the lower side of the tank body 1 . As the slide 41 slides, the slide 41 can close or avoid the discharge port 12 .

[0088] The fixed platform 42 is fixedly connected to the lower side of the tank body 1 and is arranged in parallel with the slide platform 41 along the direction thereof toward the slide platform 41 .

[0089] The spring 43 is disposed between the fixed platform 42 and the sliding platform 41 , with both ends of the spring 43 connected to the fixed platform 42 and the sliding platform 41 respectively.

[0090] By adopting the above technical solution, when the slide 41 moves to avoid the discharge opening 12 , the spring 43 is elastically compressed to drive the slide 41 to move to a position to close the discharge opening 12 .

[0091] Based on this embodiment, the sliding platform 41 has an anti-bending rod 411 extending toward the fixing platform 42 and slidably connected to the fixing platform 42 . The anti-bending rod 411 is inserted into the inner portion of the spring 43 .

[0092] In some embodiments, as Figure 3 、 Figure 4 and Figure 8 As shown, the upper end of the main shaft 2 passes through the end cover 11 and extends out, and the rotation drive assembly 5 includes a driven gear 51 and a rotation motor 52.

[0093] The driven gear 51 is coaxially connected to the upper end of the main shaft 2 .

[0094] The rotating motor 52 is fixedly mounted on the end cover 11 , and its power output axis is parallel to the main shaft 2 .

[0095] The power output end of the rotating motor 52 is coaxially connected to a driving gear 521 meshing with the driven gear 51 , so that when the rotating motor 52 is started, the driven gear 51 rotates driven by the driving gear 521 .

[0096] In some embodiments, as Figure 1 As shown, the adjustable seed dressing device further includes a timer 7 , which is electrically connected to the rotation drive assembly 5 .

[0097] In actual use, the timer 7 is used to record time. When the recorded time is reached, the timer 7 can send a stop signal to the rotation drive assembly 5 to stop the main shaft 2 from rotating.

[0098] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. Adjustable seed dressing device, characterized in that: include: The tank body is hollow inside and has an upward opening, and the upper end of the tank body is connected to an end cover suitable for closing the opening; the end cover is provided with a feed port, and the end cover is connected to a surface cover suitable for closing the feed port; the lower end of the tank body is provided with a discharge port, and the lower end surface of the tank body is connected to a blocking component suitable for closing or avoiding the discharge port; a main shaft, coaxially disposed within the tank body and rotatably connected to the tank body and / or the end cover in an up-and-down direction; and the main shaft is also drivingly connected to a rotation drive assembly for driving the main shaft to rotate; as well as A plurality of fan blades are arranged in parallel along the up and down directions on the outer surface of the main shaft, each of the fan blades is rotatably connected to the main shaft, and the rotation axis is parallel to the direction of the fan blade toward the main shaft; and each of the fan blades and the main shaft has a locking structure to connect the fan blade and the main shaft and limit the rotation of the fan blade relative to the main shaft.

2. The adjustable seed dressing device according to claim 1, characterized in that: The main shaft has a plurality of through holes spaced apart in the vertical direction and corresponding to the plurality of fan blades one by one; the fan blades have reserved holes penetrating toward the main shaft and communicating with the corresponding through holes, and an insertion rod is slidably inserted into the reserved holes; In which, the insertion rod and the reserved hole both adopt a structure with a polygonal cross-section, and the outer peripheral wall of the insertion rod abuts the inner peripheral surface of the reserved hole to limit the rotation of the insertion rod relative to the fan blade; and, the insertion rod is coaxially connected to a connecting shaft suitable for passing through the through hole and extending out, and the locking structure is arranged between the connecting shaft and the main shaft to connect the connecting shaft and the main shaft and limit the rotation of the fan blade relative to the main shaft.

3. The adjustable seed dressing device according to claim 2, characterized in that: The outer end surface of the insertion rod facing away from the main shaft is provided with a first thread groove, and the locking structure includes: a positioning member fixedly connected to a side of the main shaft facing away from the fan blades, and having a first alignment hole in communication with the through hole, wherein a tooth groove is formed on an inner peripheral wall of the first alignment hole; a limiting gear, disposed at the protruding end of the connecting shaft, adapted to be inserted into or withdrawn from the tooth groove; and a docking member, slidably connected to the outer side of the fan blade facing away from the main shaft, and having a second alignment hole adapted to communicate with the first thread groove, wherein a positioning bolt adapted to be threadedly connected to the first thread groove is inserted into the second alignment hole; Among them, when the positioning bolt is threadedly connected to the first thread groove, the docking piece can limit the movement of the main shaft so that the limiting gear is embedded in the tooth groove and the rotation of the fan blade relative to the main shaft is limited by the positioning piece; when the positioning bolt is separated from the first thread groove, the insertion rod can move toward the main shaft so that the limiting gear exits the tooth groove and the fan blade can rotate with the insertion rod as the axis.

4. The adjustable seed dressing device according to claim 3, characterized in that: The main shaft is provided with a plurality of sunken grooves suitable for one-to-one corresponding embedding of the plurality of positioning members, and a second thread groove is provided at the bottom of each of the sunken grooves; the positioning member is provided with a through hole suitable for threaded connection with the second thread groove, and the positioning member also includes a mounting bolt inserted into the through hole, with its head abutting against the outer side surface of the positioning member and suitable for threaded connection with the second thread groove.

5. The adjustable seed dressing device according to claim 3 or 4, characterized in that: The fan blades also include: The protective shell is detachably connected to the end surface of the fan blade facing away from the main shaft to limit seeds and materials from falling on the docking piece or entering the first thread groove.

6. The adjustable seed dressing device according to claim 1, characterized in that: The upper end surface of the tank body has a lower ring body extending radially outward, and the end cover has an upper ring body extending radially outward; wherein the upper ring body and the lower ring body are respectively provided with a first special-shaped hole and a second special-shaped hole, the first special-shaped hole and the second special-shaped hole are connected to each other, and the end cover further includes: a limiting rod adapted to be inserted into the first and second interconnected special-shaped holes, with an upper end having an end adapted to be supported on the upper ring body and a lower end having a special-shaped portion adapted to pass through the first and second special-shaped holes; When the special-shaped portion passes through the first special-shaped hole and the second special-shaped hole and the end head abuts the upper side surface of the upper ring body, the limiting rod can be rotated until the special-shaped portion abuts the lower side surface of the lower ring body to limit the movement of the limiting rod.

7. The adjustable seed dressing device according to claim 6, characterized in that: The lower ring body has a plurality of convex ball parts corresponding to the plurality of second special-shaped holes one by one and made of elastic material. Each of the special-shaped parts has a concave ball groove suitable for the convex ball part to be embedded in, so as to limit the rotation of the limit rod.

8. The adjustable seed dressing device according to claim 1, wherein: The blocking component comprises: A slide, slidably connected to the lower side of the tank body, suitable for closing or avoiding the discharge port; a fixing platform fixedly connected to the lower side of the tank body; and a spring, disposed between the fixed platform and the sliding platform; When the slide moves to avoid the discharge opening, the spring is elastically compressed to drive the slide to move to a position that closes the discharge opening. Furthermore, the sliding platform is provided with an anti-bending rod extending toward the fixed platform and slidably connected to the fixed platform, and the anti-bending rod is inserted into the interior of the spring.

9. The adjustable seed dressing device according to claim 1, wherein: The upper end of the main shaft passes through the end cover and extends out, and the rotation drive assembly includes: A driven gear coaxially connected to the upper end of the main shaft; and The rotating motor is fixedly arranged on the end cover, and the power output axis is parallel to the main shaft; the power output end of the rotating motor is coaxially connected to a driving gear meshing with the driven gear, so that when the rotating motor is started, the driven gear rotates under the drive of the driving gear.

10. The adjustable seed dressing device according to claim 1 or 9, characterized in that: The adjustable seed dressing device also includes: a timer, electrically connected to the rotation drive assembly; The timer is used to record time, and when the recorded time is reached, the timer sends a stop signal to the rotation drive component to stop the main shaft from rotating.

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