An automatic mixer for fertilizer raw materials with precise proportions

Abstract

The present invention discloses an automatic mixer for accurately proportioning fertilizer raw materials, which belongs to the field of fertilizer mixing technology. The present invention includes an outer casing and a feed hopper and a discharge hopper respectively installed at the upper and lower ends of the outer casing. A servo motor is installed at the upper end of the outer casing, a material injection pipe is provided on the side of the servo motor, and a transmission rod is installed on the output end of the servo motor. A movable mixing component for fully mixing the fertilizer is installed on the transmission rod, and a sleeve is installed at the lower end of the feed hopper. A feeding trough is provided on the circumference of the sleeve. An optical sensor is installed on the side of the feed hopper, and the optical sensor is electrically connected to an electromagnetic on-off valve, and the electromagnetic on-off valve is installed on the feed hopper. The automatic mixer for accurately proportioning fertilizer raw materials can achieve accurate control of the raw materials inside the hopper through the electrical connection between the optical sensor and the electromagnetic valve, and at the same time, the stirring range of the fertilizer is increased by a movable and adjustable stirring rod, so that the raw materials can be fully mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer mixing, in particular to an automatic mixer for fertilizer raw materials with precise proportioning. Background Art

[0002] In modern agricultural production, the scientific proportioning and mixing of fertilizers are crucial to improving crop yield and quality. When processing fertilizers, in order to facilitate the mixing of various fertilizer raw materials, corresponding mixers are usually used. The mixer can improve the mixing efficiency of the raw materials.

[0003] For example, a Chinese patent with announcement number: CN215086739U, title: A fertilizer processing equipment, and announcement date: 2021-12-10, includes a mixing barrel, an inner barrel is provided inside the mixing barrel, a cavity is formed between the mixing barrel and the inner barrel, and feed ports are provided on both sides of the top of the mixing barrel, the interior of the inner barrel is connected to a stirring shaft through a motor, a plurality of stirring rods are provided on the stirring shaft, a disc is fixed to the outside of the top of the stirring shaft, the disc and the inner wall of the top of the mixing barrel are close to each other, a plurality of through holes are opened around the disc, the through holes correspond to the position of the feed port, and the diameter of the through holes is larger than the diameter of the feed port, and the through holes are vertically distributed at 90° with the stirring shaft as the center. The above-mentioned prior art has the following technical problems:

[0004] Existing fertilizer processing equipment uses a stirring rod inside the equipment to stir the fertilizer when mixing it. However, the overall mixing method of the stirring rod is relatively simple during mixing, and the stirring range is also constant. Therefore, it is not convenient to fully mix the fertilizer during actual mixing. In order to control the amount of raw materials added to the processing equipment, the only way is to add scale lines on the hopper to observe the feed amount. The overall operation is relatively cumbersome, and visual observation is prone to large errors due to the observation angle.

[0005] Therefore, we proposed an automatic mixer for fertilizer raw materials with precise proportions to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide an automatic mixer for fertilizer raw materials with precise proportions, so as to solve the problem raised in the above background technology that the existing fertilizer processing equipment on the market stirs the fertilizer through its internal stirring rod when mixing the fertilizer, but the overall mixing method of the stirring rod is relatively simple during mixing, and the stirring range is also constant. Therefore, it is not convenient to fully mix the fertilizer during actual mixing, and in order to control the amount of raw materials added to the processing equipment, it is only possible to observe the feed amount by adding scale lines on the hopper. The overall operation is relatively cumbersome, and at the same time, naked eye observation is prone to large errors due to the observation angle.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic mixer for fertilizer raw materials with precise proportioning, comprising an outer casing and a feed hopper and a discharge hopper respectively mounted at the upper and lower ends of the outer casing, a servo motor being mounted at the upper end of the outer casing, an injection pipe being provided on the side of the servo motor, and a transmission rod being mounted on the output end of the servo motor, a movable mixing component for fully mixing the fertilizer being mounted on the transmission rod, a sleeve being mounted at the lower end of the feed hopper, a feeding trough being provided on the circumference of the sleeve, an optical sensor being mounted on the side of the feed hopper, and the optical sensor being electrically connected to an electromagnetic on-off valve, the electromagnetic on-off valve being mounted on the feed hopper, a linkage gear being connected to the sleeve through a one-way bearing, and the side of the linkage gear being meshed with a driving gear, and the driving gear being keyed to the transmission rod.

[0008] Preferably, the feed hopper and the interior of the sleeve are interconnected, and the feed hopper is made of a transparent material that allows light to pass through.

[0009] By adopting the above technical solution, when fertilizer is added into the feed hopper, the fertilizer can enter the interior of the outer casing through the feed hopper and the sleeve.

[0010] Preferably, the sleeve tube can rotate at the lower end of the feed hopper, and a plurality of feeding troughs are evenly distributed around the circumference of the sleeve tube.

[0011] By adopting the above technical solution, the sleeve is rotated on the feed hopper, so that the raw materials can be dispersed by utilizing centrifugal force when the sleeve rotates.

[0012] Preferably, the movable mixing component includes a positioning frame, and the positioning frame is fixed on the transmission rod, a movable frame is installed on the positioning frame, and the rotating shaft on the movable frame is connected to a guide wheel, a resistance ring is provided on the side of the guide wheel, and the resistance ring is fixed to the inside of the outer casing, a striking column is installed on the movable frame, and an adjusting rod is installed through the striking column, the adjusting rod is connected to the inside of the striking column through a built-in spring, and a branch block is fixed to the inside of the striking column, a pressure ring is fixed on the transmission rod, adjacent striking columns are connected to each other through a lap plate, and the lap plate is connected to each other with the movable frame through a reset spring.

[0013] By adopting the above technical solution, the setting of the built-in spring can enable the adjusting rod to reset and rebound after moving on the striking column.

[0014] Preferably, the movable frame can rotate on the positioning frame, and a vortex spring providing a reset elastic force is installed on the outer side of the rotating shaft of the movable frame, and a plurality of striking posts are evenly distributed on the movable frame.

[0015] By adopting the above technical solution, when the positioning frame rotates along with the transmission rod, it can drive the movable frame and the striking column thereon to rotate synchronously, thereby mixing the fertilizer inside the outer casing.

[0016] Preferably, the guide wheel and the inner ring of the interference ring fit each other, and there are multiple interference rings evenly distributed inside the outer shell, and adjacent interference rings are spaced apart, and the contact surface between the interference ring and the guide wheel is set to a rough surface.

[0017] By adopting the above technical solution, when the guide wheel rotates along with the positioning frame, the guide wheel can drive the movable frame to rotate by utilizing the contact between the guide wheel and the contact ring.

[0018] Preferably, the interior of the striking post is configured as a hollow structure, one end of the striking post is configured as an open structure, and the adjusting rod on the striking post is capable of sliding.

[0019] By adopting the above technical solution, the fertilizer can easily enter the interior of the striking column through the opening structure at one end of the striking column.

[0020] Preferably, the striking post and the movable frame are slidably connected, and branch blocks are symmetrically distributed on the inner side of the open end of the striking post.

[0021] By adopting the above technical solution, when the adjusting rod moves inside the striking post and collides with the branch block, the striking post can be driven to move synchronously when the adjusting rod moves subsequently.

[0022] Preferably, the end of the adjusting rod extending out of the striking column is a spherical structure, the adjusting rod and the pressure ring correspond one to one, and the cross section of the pressure ring is an annular structure.

[0023] By adopting the above technical solution, when the adjusting rod rotates along with the movable frame, the spherical end of the adjusting rod can contact the surface of the pressure ring.

[0024] Preferably, the lap plate can slide on the movable frame, and the upper end of the lap plate is in contact with the movable frame in an initial state.

[0025] By adopting the above technical solution, the reciprocating movement of the lap plate can impact the movable frame, and the vibration generated by the impact of the movable frame can be used to shake off the fertilizer agglomerated around it.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the automatic mixer for fertilizer raw materials with precise proportioning can achieve precise control of the raw materials inside the hopper through the electrical connection between the optical sensor and the solenoid valve, and at the same time, the stirring range of the fertilizer is increased through the movable and adjustable stirring rod, so that the raw materials can be fully mixed;

[0027] 1. An optical sensor is provided to monitor the amount of raw materials inside the feed hopper. When the amount of raw materials added is reached, the optical sensor controls the electromagnetic on-off valve on the feed hopper to close, thereby closing the feed hopper to achieve accurate addition ratio of raw materials.

[0028] 2. A driving gear is provided, and the rotation of the driving gear can make the meshing linked gear rotate synchronously. Because the linked gear is connected to the sleeve through a one-way bearing, when the linked gear rotates in the direction in which the one-way bearing is locked, the linked gear can use the one-way bearing to drive the sleeve to rotate at the lower end of the feed hopper. Through the rotation of the sleeve, the raw materials discharged from the feed chute can be evenly scattered inside the outer casing by the action of centrifugal force;

[0029] 3. A movable frame is provided. When the transmission rod rotates, it can drive the positioning frame to rotate synchronously. The rotation of the positioning frame can drive the movable frame to rotate synchronously. The raw materials inside the outer casing are stirred by the rotation of the movable frame and the positioning frame. As the positioning frame rotates, the movable frame can contact the guide wheel with the resistance ring, so that the guide wheel drives the movable frame to rotate synchronously. The rotation of the movable frame can further improve the mixing and stirring effect of the raw materials.

[0030] 4. A striking column is provided. When the movable frame rotates on the positioning frame, it can drive the striking column to rotate synchronously. After the striking column rotates, the spherical end of the adjusting rod can be in contact with and disengaged from the pressure ring, so that the adjusting rod can reciprocate on the striking column. When the adjusting rod moves toward the opening of the striking column, the raw materials inside the striking column can be squeezed out. When the adjusting rod moves toward the opening away from the striking column, the raw materials can re-enter the interior of the striking column, thereby further improving the mixing effect of the raw materials. At the same time, the adjusting rod can reciprocate during the rotation of the movable frame. The fertilizer can be mixed by the rotation of the adjusting rod, and the reciprocating movement of the adjusting rod can dynamically change its own stirring range when mixing the fertilizer.

[0031] 5. A lap plate is provided. When the adjusting rod moves toward the opening direction of the striking column and collides with the branch block, the adjusting rod continues to move to push the striking column and the lap plate to move. After the adjusting rod is reset, the striking column and the lap plate are reset and rebounded under the action of the reset spring. The reset lap plate can impact the movable frame, and the vibration generated by the impact on the movable frame can be used to shake off the agglomerated raw materials around it. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention;

[0033] Figure 2 This is a front cross-sectional structural diagram of the present invention;

[0034] Figure 3 Schematic diagram of the transmission rod and pressure ring structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the sleeve pipe and feed trough structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the guide wheel and the interference ring structure of the present invention;

[0037] Figure 6 This is a schematic structural diagram of the positioning frame and the movable frame of the present invention;

[0038] Figure 7 This is a schematic cross-sectional view of the striking column and the adjusting rod of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the striking column and branch block of the present invention;

[0040] Figure 9 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0041] In the figure: 1. Outer casing; 2. Feed hopper; 3. Discharge hopper; 4. Servo motor; 5. Transmission rod; 6. Movable mixing component; 601. Positioning frame; 602. Movable frame; 603. Guide wheel; 604. Resistance ring; 605. Striking column; 606. Adjusting rod; 607. Built-in spring; 608. Branch block; 609. Pressure ring; 6010. Lap plate; 6011. Return spring; 7. Socket tube; 8. Feed trough; 9. Optical sensor; 10. Solenoid on-off valve; 11. One-way bearing; 12. Linkage gear; 13. Driving gear; 14. Injection pipe. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figures 1-9In order to control the amount of raw materials added to the processing equipment, the existing processing equipment can only observe the feed amount by adding scale lines on the hopper. The overall operation is relatively cumbersome. At the same time, naked eye observation is prone to large errors due to the observation angle. In order to solve this technical problem, the following technical content is disclosed in this embodiment: an automatic mixer for fertilizer raw materials with precise proportioning, comprising an outer casing 1 and a feed hopper 2 and a discharge hopper 3 respectively installed at the upper and lower ends of the outer casing 1, a servo motor 4 is installed at the upper end of the outer casing 1, a material injection pipe 14 is provided on the side of the servo motor 4, and a transmission rod 5 is installed on the output end of the servo motor 4, and an active mixing device for fully mixing the fertilizer is installed on the transmission rod 5. The feeding hopper 2 is provided with a sleeve tube 7 and a feeding trough 8 is provided on the circumference of the sleeve tube 7. An optical sensor 9 is installed on the side of the feed hopper 2, and the optical sensor 9 is electrically connected to the electromagnetic on-off valve 10. The electromagnetic on-off valve 10 is installed on the feed hopper 2. The sleeve tube 7 is connected to the linkage gear 12 through a one-way bearing 11, and the side of the linkage gear 12 is meshed with a driving gear 13. The driving gear 13 is keyed to the transmission rod 5. The interiors of the feed hopper 2 and the sleeve tube 7 are connected to each other, and the feed hopper 2 is configured to be a transparent material through which light can pass. The sleeve tube 7 can rotate at the lower end of the feed hopper 2, and a plurality of feeding troughs 8 are evenly distributed on the circumference of the sleeve tube 7.

[0044] When the fertilizer needs to be processed, the main raw material is added to the interior of the outer casing 1 through the injection pipe 14, and then the auxiliary raw material is put into the feed hopper 2. The optical sensor 9 on the side of the feed hopper 2 can monitor the amount of raw materials in the feed hopper 2. When the amount of auxiliary raw materials added reaches the standard, the optical sensor 9 controls the electromagnetic on-off valve 10 on the feed hopper 2 to close, thereby achieving accurate quantitative proportioning of the auxiliary raw materials. In the process of adding the auxiliary raw materials, the servo motor 4 is turned on. After the servo motor 4 is turned on, the transmission rod 5 can be used to drive the driving gear 13 The driving gear 13 rotates, and the meshing linkage gear 12 rotates. When the rotation direction of the linkage gear 12 is the locking direction of the one-way bearing 11, the linkage gear 12 can drive the sleeve pipe 7 to rotate synchronously through the one-way bearing 11. Since the sleeve pipe 7 is connected to the feed hopper 2, the raw materials in the feed hopper 2 can enter the interior of the outer casing 1 through the sleeve pipe 7 and the side feeding trough 8, and the rotation of the sleeve pipe 7 can utilize centrifugal force to evenly scatter the raw materials discharged from the feeding trough 8 into the interior of the outer casing 1.

[0045] Embodiment 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. When the existing fertilizer processing equipment mixes the fertilizer, the fertilizer is stirred by the stirring rod inside it. However, the overall mixing method of the stirring rod is relatively single during mixing, and the stirring range is also constant. Therefore, it is not convenient to fully mix the fertilizer during actual mixing. In order to further solve this technical problem, this embodiment discloses the following technical content: the movable mixing component 6 includes a positioning frame 601, and the positioning frame 601 is fixed on the transmission rod 5, and the positioning frame 601 is installed There is a movable frame 602, and the rotating shaft on the movable frame 602 is connected to the guide wheel 603, the side of the guide wheel 603 is provided with a resistance ring 604, and the resistance ring 604 is fixed to the inside of the outer casing 1, a striking column 605 is installed on the movable frame 602, and an adjusting rod 606 is installed through the striking column 605, the adjusting rod 606 is connected to the inside of the striking column 605 through the built-in spring 607, and the inside of the striking column 605 is fixed with a branch block 608, a pressure ring 609 is fixed on the transmission rod 5, and adjacent striking columns 605 are connected to each other through a lap plate 6010, and the lap plate 6010 is connected to the movable frame 602 through a return spring 6011. The movable frame 602 can rotate on the positioning frame 601, and a vortex spring providing a return elastic force is installed on the outer side of the rotating shaft of the movable frame 602. A plurality of striking posts 605 are evenly distributed on the movable frame 602. The guide wheel 603 and the inner ring of the resistance ring 604 fit each other. There are a plurality of resistance rings 604 evenly distributed inside the outer casing 1, and the adjacent resistance rings 604 are spaced apart. The contact surface between the resistance ring 604 and the guide wheel 603 is set to a rough surface, and the interior of the striking post 605 is set to be hollow. The striking column 605 has a core structure, and one end of the striking column 605 is set to an open structure, and the adjusting rod 606 on the striking column 605 can slide, the striking column 605 and the movable frame 602 are slidably connected, and the branch blocks 608 are symmetrically distributed on the inner side of the open end of the striking column 605, the adjusting rod 606 extending out of the striking column 605 has a spherical structure, and the adjusting rod 606 and the pressure ring 609 correspond one to one, and the cross section of the pressure ring 609 is a ring structure, the lap plate 6010 can slide on the movable frame 602, and the upper end of the lap plate 6010 is in contact with the movable frame 602 in the initial state.

[0046] When the main raw materials and auxiliary raw materials are added to the interior of the outer casing 1, the servo motor 4 is turned on to control the transmission rod 5 to drive the driving gear 13 to rotate. After the driving gear 13 rotates, the linkage gear 12 rotates synchronously. The steering of the driving gear 13 is used to control the steering of the linkage gear 12, so that the rotation direction of the linkage gear 12 is the movable direction of the one-way bearing 11. At this time, the linkage gear 12 will drive the one-way bearing 11 to rotate on the sleeve tube 7, and will not make the sleeve tube 7 rotate synchronously. After the transmission rod 5 rotates, the positioning frame 601 can be rotated. After the positioning frame 601 rotates, the movable frame 602 can be rotated. Through the positioning frame 601 and the movable frame 6 02 rotates, thereby preliminarily stirring and mixing the raw materials inside the outer casing 1, and the movable frame 602 can make the guide wheel 603 on the rotating shaft rotate synchronously after the rotation, and when the guide wheel 603 contacts the friction ring 604 as the movable frame 602 rotates, the guide wheel 603 can drive the movable frame 602 to rotate on the positioning frame 601, and when the guide wheel 603 rotates with the positioning frame 601 and disengages from the friction ring 604, the movable frame 602 can be reset under the action of the vortex spring on the rotating shaft, thereby further improving the mixing effect of the raw materials through the reciprocating rotation of the movable frame 602 on the positioning frame 601, and when the movable frame 602 rotates, it can make its The striking column 605 on the outer casing 1 rotates. When the spherical end of the adjusting rod 606 on the striking column 605 contacts the pressure ring 609 after the striking column 605 rotates, the adjusting rod 606 can move toward the opening direction of the striking column 605. At this time, the movement of the adjusting rod 606 can squeeze the raw material inside the striking column 605 outward. When the adjusting rod 606 is separated from the pressure ring 609 as the striking column 605 rotates, the adjusting rod 606 is reset and rebounded under the action of the built-in spring 607. After the adjusting rod 606 is reset, the raw material inside the outer casing 1 will re-enter the inner part of the outer casing 1. In this way, the stirring effect of the raw material can be improved by the raw material entering and exiting the interior of the striking column 605. 6 After moving toward the opening direction of the striking column 605 and contacting the branch block 608, the adjusting rod 606 can push the striking column 605 and the overlapping plate 6010 to move synchronously when continuing to move. When the adjusting rod 606 is reset, the striking column 605 and the overlapping plate 6010 can also rebound under the action of the reset spring 6011. Since the overlapping plate 6010 is in contact with the movable frame 602 in the initial state, the overlapping plate 6010 can impact the movable frame 602 when rebounding. The vibration generated by the impact on the movable frame 602 can shake off the surrounding agglomerated raw materials. It should be noted that the amount of raw materials added inside the outer casing 1 will not exceed the top of the movable frame 602.

[0047] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic mixer for accurately proportioning fertilizer raw materials, comprising an outer casing (1) and a feed hopper (2) and a discharge hopper (3) respectively mounted at the upper and lower ends of the outer casing (1), a servo motor (4) being mounted at the upper end of the outer casing (1), a material injection pipe (14) being provided on the side of the servo motor (4), and a transmission rod (5) being mounted on the output end of the servo motor (4), characterized in that: The transmission rod (5) is equipped with a movable mixing component (6) for fully mixing the fertilizer, and the lower end of the feed hopper (2) is equipped with a sleeve pipe (7), and a feeding trough (8) is provided on the circumference of the sleeve pipe (7). An optical sensor (9) is installed on the side of the feed hopper (2), and the optical sensor (9) is electrically connected to an electromagnetic on-off valve (10). The electromagnetic on-off valve (10) is installed on the feed hopper (2). The sleeve pipe (7) is connected to a linkage gear (12) through a one-way bearing (11), and the side of the linkage gear (12) is meshed with a driving gear (13), and the driving gear (13) is key-connected to the transmission rod (5); The movable mixing component (6) includes a positioning frame (601), and the positioning frame (601) is fixed on the transmission rod (5), a movable frame (602) is installed on the positioning frame (601), and the rotating shaft on the movable frame (602) is connected to a guide wheel (603), a side of the guide wheel (603) is provided with a resistance ring (604), and the resistance ring (604) is fixed inside the outer casing (1), and a striking column (605) is installed on the movable frame (602), and the striking column (605) is connected to the rotating shaft of the movable frame (602). 05) is provided with an adjusting rod (606), the adjusting rod (606) is connected to the inside of the striking column (605) through a built-in spring (607), and a branch block (608) is fixed to the inside of the striking column (605), a pressure ring (609) is fixed to the transmission rod (5), adjacent striking columns (605) are connected to each other through a lap plate (6010), and the lap plate (6010) is connected to each other through a return spring (6011) and the movable frame (602).

2. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The interiors of the feed hopper (2) and the sleeve (7) are interconnected, and the feed hopper (2) is made of a transparent material that allows light to pass through.

3. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The sleeve tube (7) is capable of rotating at the lower end of the feed hopper (2), and a plurality of feeding troughs (8) are evenly distributed around the circumference of the sleeve tube (7).

4. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The movable frame (602) is capable of rotating on the positioning frame (601), and a vortex spring providing a restoring elastic force is installed on the outer side of the rotating shaft on the movable frame (602), and a plurality of striking posts (605) are evenly distributed on the movable frame (602).

5. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The guide wheel (603) and the inner ring of the interference ring (604) fit together, and a plurality of interference rings (604) are evenly distributed inside the outer housing (1), and adjacent interference rings (604) are spaced apart. The contact surface between the interference ring (604) and the guide wheel (603) is set to a rough surface.

6. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The interior of the striking column (605) is configured as a hollow structure, and one end of the striking column (605) is configured as an open structure, and the adjusting rod (606) on the striking column (605) is capable of sliding.

7. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The striking post (605) and the movable frame (602) are slidably connected, and branch blocks (608) are symmetrically distributed on the inner side of the open end of the striking post (605).

8. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: One end of the adjusting rod (606) extending from the striking column (605) is a spherical structure, and the adjusting rod (606) and the pressure ring (609) correspond one to one, and the cross section of the pressure ring (609) is an annular structure.

9. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The lap plate (6010) is capable of sliding on the movable frame (602), and the upper end of the lap plate (6010) is in contact with the movable frame (602) in an initial state.

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