Automatic fertilizer raw material mixing machine with precise proportioning function

Abstract

The invention discloses an automatic fertilizer raw material mixing machine capable of achieving precise proportioning, and belongs to the technical field of fertilizer mixing. The automatic fertilizer raw material mixing machine comprises an outer machine shell, a feeding hopper and a discharging hopper, the feeding hopper and the discharging hopper are installed at the upper end and the lower end of the outer machine shell respectively, a servo motor is installed at the upper end of the outer machine shell, and a material injection pipe is arranged on the side edge of the servo motor; a servo motor is mounted at the lower end of the feeding hopper, a transmission rod is mounted at the output end of the servo motor, a movable mixing component for fully and uniformly mixing fertilizer is mounted on the transmission rod, a sleeving pipe is mounted at the lower end of the feeding hopper, a feeding groove is formed in the circumferential direction of the sleeving pipe, an optical sensor is mounted on the side edge of the feeding hopper, and the optical sensor is electrically connected with an electromagnetic on-off valve. And the electromagnetic on-off valve is mounted on the feeding hopper. According to the automatic fertilizer raw material mixing machine with the precise proportioning function, the raw materials in the hopper can be precisely controlled through electrical connection of the optical sensor and the electromagnetic valve, and meanwhile, the stirring range of a fertilizer is widened through the stirring rod capable of being movably adjusted, so that the raw materials can be fully and uniformly mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer mixing, and specifically 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 for improving the yield and quality of crops. When processing fertilizers, in order to facilitate the mixing of various fertilizer raw materials, corresponding mixers are usually used, and the mixer can improve the mixing efficiency of the raw materials.

[0003] For example, in a Chinese patent with the publication number: CN215086739U, the name: A fertilizer processing device, and the publication date: December 10, 2021, it includes a mixing cylinder. An inner cylinder is provided inside the mixing cylinder, and a cavity is formed between the mixing cylinder and the inner cylinder. Feed inlets are provided on both sides of the top of the mixing cylinder. Inside the inner cylinder, a stirring shaft is connected by a motor. A number of stirring rods are provided on the stirring shaft. A disc is fixed outside the top of the stirring shaft. The disc is close to the inner wall of the top of the mixing cylinder. A number of through holes are circumferentially formed on the disc. The positions of the through holes correspond to those of the feed inlets, and the diameter of the through holes is larger than that of the feed inlets. And the through holes are vertically distributed at 90° with the stirring shaft as the center. Among the above-mentioned prior arts, the following technical problems exist: When the existing fertilizer processing equipment mixes fertilizers, the fertilizers are stirred by the stirring rods inside it. However, the overall mixing method of the stirring rods during mixing is relatively single, and the stirring range is also constant. Therefore, during actual stirring, it is not convenient to fully mix the fertilizers. And in order to control the amount of raw materials added to the processing equipment, only by adding scale lines to the hopper to observe the feeding amount, the overall operation is relatively cumbersome, and visual observation is prone to large errors due to the observation angle.

[0004] Therefore, we propose an automatic mixer for fertilizer raw materials with precise proportioning to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic mixer for fertilizer raw materials with precise proportioning to solve the problems in the above background art that when the existing fertilizer processing equipment in the current market mixes fertilizers, the fertilizers are stirred by the stirring rods inside it. However, the overall mixing method of the stirring rods during mixing is relatively single, and the stirring range is also constant. Therefore, during actual stirring, it is not convenient to fully mix the fertilizers. And in order to control the amount of raw materials added to the processing equipment, only by adding scale lines to the hopper to observe the feeding amount, the overall operation is relatively cumbersome, and visual observation is prone to large errors due to the observation angle.

[0006] To achieve the above object, the present invention provides the following technical solution: An automatic mixer for fertilizer raw materials with precise proportioning, comprising an outer casing, 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 feed pipe is arranged beside the servo motor, and a transmission rod is installed at the output end of the servo motor. An active mixing component for fully mixing the fertilizer is installed on the transmission rod. A sleeve pipe is installed at the lower end of the feed hopper, and a feeding groove is circumferentially formed on the sleeve pipe. An optical sensor is installed beside the feed hopper, and the optical sensor is electrically connected to an electromagnetic on-off valve. The electromagnetic on-off valve is installed on the feed hopper. The sleeve pipe is connected with a linkage gear through a one-way bearing, and a driving gear is meshed and connected to the side of the linkage gear. The driving gear is key-connected to the transmission rod.

[0007] Preferably, the inside of the feed hopper and the sleeve pipe is mutually communicated, and the feed hopper is made of a transparent material that allows light to pass through.

[0008] By adopting the above technical solution, when fertilizer is added to the inside of the feed hopper, the fertilizer can enter the inside of the outer casing through the feed hopper and the sleeve pipe.

[0009] Preferably, the sleeve pipe can rotate at the lower end of the feed hopper, and a plurality of feeding grooves are evenly distributed on the circumference of the sleeve pipe.

[0010] By adopting the above technical solution, through the rotation of the sleeve pipe on the feed hopper, the raw materials can be dispersed by centrifugal force when the sleeve pipe rotates.

[0011] Preferably, the active mixing component includes a positioning frame fixed on the transmission rod. An active frame is installed on the positioning frame, and a guide wheel is connected to the rotating shaft on the active frame. A resisting ring is arranged beside the guide wheel and fixed inside the outer casing. A striking column is installed on the active 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. A branch block is fixed inside the striking column. A pressing ring is fixed on the transmission rod. Adjacent striking columns are connected to each other through a lapping plate, and the lapping plate is connected to the active frame through a reset spring.

[0012] By adopting the above technical solution, through the setting of the built-in spring, the adjusting rod can be reset and rebound after moving on the striking column.

[0013] Preferably, the active frame can rotate on the positioning frame, a scroll spring for providing a reset elastic force is installed outside the rotating shaft on the active frame, and a plurality of striking columns are evenly distributed on the active frame.

[0014] By adopting the above technical solution, when the positioning frame rotates with the transmission rod, it can drive the movable frame and the striking column thereon to rotate synchronously, so as to mix the fertilizer inside the outer shell.

[0015] Preferably, the guide wheel and the inner ring of the resistance ring fit each other, and there are multiple resistance rings evenly distributed inside the outer housing, and adjacent resistance rings are spaced apart, and the contact surface between the resistance ring and the guide wheel is set to a rough surface.

[0016] By adopting the above technical solution, when the guide wheel rotates with the positioning frame, the contact between the guide wheel and the abutment ring is utilized so that the guide wheel can drive the movable frame to rotate.

[0017] Preferably, the interior of the striking column is configured as a hollow structure, and one end of the striking column is configured as an open structure, and the adjusting rod on the striking column is capable of sliding.

[0018] 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.

[0019] Preferably, the striking column and the movable frame are slidably connected, and branch blocks are symmetrically distributed on the inner side of the open end of the striking column.

[0020] By adopting the above technical solution, when the adjusting rod moves inside the striking column and collides with the branch block, the striking column can be driven to move synchronously when the adjusting rod moves subsequently.

[0021] Preferably, one end of the adjusting rod extending out of the striking column is a spherical structure, and the adjusting rod and the pressure ring correspond one to one, and the cross section of the pressure ring is an annular structure.

[0022] By adopting the above technical solution, when the adjusting rod rotates with the movable frame, the spherical end of the adjusting rod can contact with the surface of the pressure ring.

[0023] 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.

[0024] 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.

[0025] Compared with the prior art, the invention has the following beneficial effects: the automatic mixer for fertilizer raw materials with precise proportioning can realize 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; 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; 2. A driving gear is provided, and the rotation of the driving gear can make the meshing linked gears rotate synchronously. Since the linked gears are connected to the sleeve tube 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 tube to rotate at the lower end of the feed hopper. Through the rotation of the sleeve tube, the raw materials discharged from the feed trough can be evenly scattered inside the outer casing by the centrifugal force; 3. A movable frame is provided. After 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. 4. A striking column is provided. When the movable frame rotates on the positioning frame, the striking column can be driven to rotate synchronously. After the striking column rotates, the spherical end of the adjusting rod can be in contact with and separated from the pressure ring, so that the adjusting rod can reciprocate on the striking column. When the adjusting rod moves toward the opening direction of the striking column, the raw materials inside the striking column can be squeezed out. When the adjusting rod moves away from the opening direction of the striking column, the raw materials can re-enter the inside 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 the fertilizer is mixed. 5. An overlap 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 can push the striking column and the overlap plate to move after continuing to move. After the adjusting rod is reset, the striking column and the overlap plate are reset and rebounded under the action of the reset spring. The reset overlap plate can hit 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a front cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the transmission rod and the pressure ring of the present invention; Figure 4This is a schematic diagram of the sleeve pipe and feed trough structure of the present invention; Figure 5 It is a schematic diagram of the structure of the guide wheel and the abutment ring of the present invention; Figure 6 It is a schematic diagram of the structure of the positioning frame and the movable frame of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the striking column and the adjusting rod of the present invention; Figure 8 This is a schematic diagram of the structure of the striking column and branch block of the present invention; Figure 9 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0027] 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. reset spring; 7. sleeve tube; 8. feed trough; 9. optical sensor; 10. electromagnetic on-off valve; 11. one-way bearing; 12. linkage gear; 13. driving gear; 14. injection pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] 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 feeding 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 accurately proportioning fertilizer raw materials, including 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 feeding pipe 14 is arranged 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 mixer for fully mixing the fertilizer is installed on the transmission rod 5. The feeding hopper 2 is provided with a sleeve tube 7, a feeding trough 8 is provided on the circumference of the sleeve tube 7, an optical sensor 9 is provided on the side of the feeding 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 feeding hopper 2, a linkage gear 12 is connected to the sleeve tube 7 through a one-way bearing 11, and a driving gear 13 is meshed and connected to the side of the linkage gear 12, and the driving gear 13 is keyed to the transmission rod 5, the feed hopper 2 and the interior of the sleeve tube 7 are interconnected, 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 feeding hopper 2, and a plurality of feeding troughs 8 are evenly distributed on the circumference of the sleeve tube 7.

[0030] When the fertilizer needs to be processed, the main raw material is added into 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 driving gear 13 can be driven by the transmission rod 5. The driving gear 13 rotates, and the meshing linked gear 12 can be rotated after the rotation. When the rotation direction of the linked gear 12 is the locking direction of the one-way bearing 11, the linked gear 12 can drive the sleeve tube 7 to rotate synchronously through the one-way bearing 11. Since the sleeve tube 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 tube 7 and the side feeding trough 8, and the rotation of the sleeve tube 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.

[0031] 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, but the overall mixing method of the stirring rod during mixing is relatively single, and the stirring range is also constant. Therefore, it is not convenient to fully mix the fertilizer during actual stirring. 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 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, 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 an internal spring 607, and a branch block 608 is fixed inside the striking column 605, 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, and 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 are fitted with each other, and a plurality of resistance rings 604 are evenly distributed inside the outer casing 1, and adjacent resistance rings 604 are distributed at intervals, the contact surface between the resistance ring 604 and the guide wheel 603 is set to a rough surface, and the inside 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 as 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 end of the adjusting rod 606 extending out of 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, 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.

[0032] When the main raw material and the auxiliary raw material are added into 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 direction of the driving gear 13 is used to control the steering direction of the linkage gear 12, so that the rotation direction of the linkage gear 12 is the activity 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 resistance 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 resistance ring 604, the movable frame 602 can be reset under the action of the vortex spring on the rotating shaft, thereby the reciprocating rotation of the movable frame 602 on the positioning frame 601 can further improve the mixing effect of the raw materials, 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. After the adjusting rod 606 moves toward the opening direction of the striking column 605 and contacts the branch block 608, the striking column 605 and the lap plate 6010 can be pushed to move synchronously when the adjusting rod 606 continues to move. After the adjusting rod 606 is reset, the striking column 605 and the lap plate 6010 can also rebound under the action of the reset spring 6011. Since the lap plate 6010 is in contact with the movable frame 602 in the initial state, the lap 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 agglomerated raw materials around it. 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.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] 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 protection scope of the present invention.

Claims

1. An automatic mixer for accurately mixing 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 arranged 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 provided with a movable mixing component (6) for fully mixing the fertilizer, and a sleeve pipe (7) is provided at the lower end of the feed hopper (2), a feeding trough (8) is provided in the circumferential direction of the sleeve pipe (7), an optical sensor (9) is provided 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), a linkage gear (12) is connected to the sleeve pipe (7) via a one-way bearing (11), and a driving gear (13) is meshedly connected to the side of the linkage gear (12), and the driving gear (13) is key-connected to the transmission rod (5).

2. The automatic mixer for accurately proportioning 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 feed grooves (8) are evenly distributed in the circumferential direction of the sleeve tube (7).

4. The automatic mixer for accurately mixing fertilizer raw materials according to claim 1, characterized in that: The movable mixing component (6) comprises 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), an adjusting rod (606) is installed through it, 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 inside the striking column (605), a pressure ring (609) is fixed on 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).

5. The automatic mixer for accurately mixing fertilizer raw materials according to claim 4 is 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).

6. The automatic mixer for accurately mixing fertilizer raw materials according to claim 4, characterized in that: The guide wheel (603) and the inner ring of the resistance ring (604) fit each other, and a plurality of resistance rings (604) are evenly distributed inside the outer housing (1), and adjacent resistance rings (604) are spaced apart from each other, and the contact surface between the resistance ring (604) and the guide wheel (603) is set as a rough surface.

7. The automatic mixer for accurately mixing fertilizer raw materials according to claim 4, 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 adjustment rod (606) on the striking column (605) is capable of sliding.

8. The automatic mixer for accurately mixing fertilizer raw materials according to claim 4, characterized in that: The striking column (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 column (605).

9. The automatic mixer for accurately mixing fertilizer raw materials according to claim 4, characterized in that: One end of the adjusting rod (606) extending out of 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 a ring structure.

10. The automatic mixer for accurately proportioning fertilizer raw materials according to claim 4, 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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