Farmland fertilizer quality detection device

Abstract

The invention discloses a farmland fertilizer quality detection device, and relates to the technical field of farmland fertilizer detection.The farmland fertilizer quality detection device comprises a working bin, a hollow connecting column is fixedly connected to the center of the interior of the working bin, a conveying pipe is fixedly connected to the interior of the connecting column, and a connector is fixedly connected to the top end of the conveying pipe; a fertilizer transfer container is arranged at the top end of the connector. Through the arranged automatic butt joint mechanism, the top end of a pushing strip downwards pushes a pushing block to downwards extrude the interior of a fertilizer transfer container through the pulling force of a connecting ring on the pushing strip, at the moment, a driving strip abuts against the top end of the pushing strip, and the other end of the driving strip tilts downwards to pull a pull rope to move outwards; meanwhile, the other end of the pull rope pulls the control strip from the bottom end of the fertilizer transfer container, waste flows into the detection cup in the limiting ring along the connector and the conveying pipe, automatic fertilizer distribution is facilitated, inaccurate detection caused by excessive contact during manual distribution is avoided, and equipment automation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of farmland fertilizer detection, in particular to a farmland fertilizer quality detection device. Background Art

[0002] Farmland fertilizer quality testing is an important link in ensuring the quality and safety of agricultural production and agricultural products, including sampling, testing, result feedback and handling of unqualified products. Farmland fertilizer quality testing methods mainly include chemical testing, biological testing, physical property testing and specific chemical composition analysis. Chemical testing is one of the most widely used soil fertility and fertilizer testing methods. This method collects farmland soil or fertilizer samples and uses chemical reagents to quantitatively determine various nutrient elements to obtain the content of various nutrients in the soil or fertilizer. Commonly used chemical testing indicators include pH value, organic matter content, total nitrogen content, available nitrogen content, total phosphorus content, available phosphorus content, total potassium content and available potassium content.

[0003] Referring to the Chinese invention patent, the publication number is CN 216144591 U, and the name is: A water-soluble fertilizer quality detection device, including a stirring box. The water-soluble fertilizer quality detection device is provided with a bidirectional threaded rod, a driving rod and a push plate. When the stirring blade stirs the water-soluble fertilizer and water, the water-soluble fertilizer and water will move in a direction away from the stirring blade due to the stirring of the stirring blade. The second motor is powered on, and the output shaft of the second motor drives the bidirectional threaded rod to rotate. The bidirectional threaded rod drives the two sliders to move to opposite sides. The two sliders drive the two driving rods to push the two push plates to move to opposite sides. The two push plates push the water-soluble fertilizer and water away from the stirring blade to gather at the position where the stirring blade is located. The water-soluble fertilizer and water away from the stirring blade gather around the stirring blade and are stirred and fully mixed together by the stirring blade, thereby achieving the effect of mixing all the water-soluble fertilizer and water away from the stirring blade for full stirring. However, there are still some problems in actual use: In actual operation, fertilizers need to be tested with multiple reagents for different qualities. Existing equipment can only perform one test at a time. Secondly, the same amount of fertilizers need to be distributed before testing. There may be deviations in the test results of different qualities. The manual distribution of fertilizers is cumbersome and the distribution amount is uneven. Summary of the invention

[0004] Technical issues solved The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a device for detecting the quality of farmland fertilizer. Technical Solution

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a farmland fertilizer quality detection device, comprising a working chamber, a connecting column fixedly connected to the central position inside the working chamber, and the connecting column is in a hollow state, a delivery pipe is fixedly connected to the inside of the connecting column, and a connecting head is fixedly connected to the top of the delivery pipe, a fertilizer transfer container is arranged on the top of the connecting head, an automatic docking mechanism is movably connected to the bottom end of the fertilizer transfer container, a pushing mechanism is movably connected to the top end of the fertilizer transfer container, and a centrifugal mixing mechanism is movably connected to the bottom end of the working chamber.

[0006] As mentioned above, the automatic docking mechanism includes a closing door, a control bar, a pull rope, a return spring, a fixed block, a driving bar and a push bar. The closing door is provided with two and is arranged in a semicircle. The pull rope is fixedly connected to one end of the control bar, and the other end of the pull rope passes through the fixed block and is fixedly connected to one end of the driving bar. The middle position of the driving bar is movably connected to the middle position of the fixed block through a rotating shaft. The return spring is sleeved on the outside of the pull rope, and the return spring is located on the opposite side of the control bar and the fixed block. The push bar is located directly below the driving bar.

[0007] As mentioned above, the bottom end of the fertilizer transfer container is in the form of a funnel, and the closing door is symmetrically connected to the fertilizer transfer container, one end of the control strip close to the closing door is located inside the fertilizer transfer container, and the other end of the control strip passes through the fertilizer transfer container and extends to the outside thereof, and the bottom end of the push strip is fixedly connected to the outside of the connector.

[0008] As mentioned above, the pushing mechanism includes a servo motor, a main sprocket, a transmission sprocket, a chain and a driving rod. The main sprocket is fixedly connected to the output end of the servo motor. Two transmission sprockets are provided, and the main sprocket and the two transmission sprockets are connected by chain transmission. The driving rods are respectively fixedly connected to the axis of the transmission sprocket, and the outer sides of the driving rods are all provided with threads.

[0009] As mentioned above, the servo motor is fixedly connected to the bottom end of the working chamber, and the end of the driving rod away from the transmission sprocket passes through the working chamber and extends into the interior thereof.

[0010] As mentioned above, the pushing mechanism also includes a connecting ring, a pushing frame and a pushing block. The pushing frame is provided with two and the bottom ends thereof are movably connected to the outer side of the connecting ring through a rotating shaft and a torque spring respectively. The pushing block is semicircular and the pushing block is fixedly connected to the other end of the pushing frame. The connecting ring is located on the outer side of the connecting column and is movably connected to the outer side of the driving rod through a thread.

[0011] As mentioned above, the centrifugal mixing mechanism includes a driving motor, a transmission gear, a transmission ring, a connecting frame and a storage ring. The transmission gear is fixedly connected to the output end of the driving motor, the connecting frame is fixedly connected to the inside of the transmission ring, and the storage rings are arranged in a ring shape and fixedly connected to the top of the connecting frame.

[0012] As mentioned above, the outer side of the transmission ring is provided with saw teeth, the transmission gear is meshed with the transmission ring through the saw teeth, the connecting ring and the transmission gear are both rotatably connected to the bottom end of the working bin, and the driving motor is fixedly connected to the bottom end of the working bin. Beneficial Effects

[0013] Compared with the prior art, this farmland fertilizer quality detection device has the following beneficial effects: First, the present invention is provided with an automatic docking mechanism, and utilizes the pulling force of the connecting ring on the pushing bar, and the top end of the pushing bar pushes the pushing block downward to squeeze the inside of the fertilizer transfer container. At this time, the driving bar supports the top end of the pushing bar, and the other end of the driving bar tilts downward to pull the pull rope to move outward. At the same time, the other end of the pull rope pulls the control bar from the bottom of the fertilizer transfer container. During this process, the reset spring is squeezed and contracted, and then the closed door follows the movement of the control bar downward and slowly opens. The waste flows into the detection cup inside the limit ring along the connecting head and the conveying pipe, which is conducive to realizing automatic distribution of fertilizers, avoiding inaccurate detection caused by excessive contact during manual distribution, and secondly improving the automation of the equipment.

[0014] 2. The present invention sets a pushing mechanism to align the bottom end of the fertilizer transfer container with the connecting head and place it downward, then pull the pushing frame to the opposite side to move the pushing block to the top of the fertilizer transfer container. At this time, the servo motor is controlled to drive the main sprocket to rotate, and the main sprocket drives the transmission sprocket to rotate through the chain. At the same time, the driving rod contracts and rotates to move the connecting ring downward. At this time, the pushing bar is pulled by the connecting ring, and its top end pushes the pushing block downward to squeeze the inside of the fertilizer transfer container, which is beneficial to the accuracy of auxiliary fertilizer distribution and ensures the stability of the equipment.

[0015] 3. The present invention sets up a centrifugal mixing mechanism, which uses a driving motor to slowly drive the transmission gear to drive the connecting ring to rotate, and at the same time, the connecting frame rotates following the trajectory of the connecting ring, so that the detection cup at the bottom end of the conveying tube can be replaced. After the distribution is completed, the speed of the driving motor is accelerated, so that the connecting frame drives the limit ring to rotate at a high speed, and the fertilizer and the reagent in the detection cup are fully mixed, so that the fertilizer and the reagent can be mixed while the detection cup is replaced for filling, which is conducive to performing multiple tests at the same time.

[0016] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a bottom top view of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional connection structure of the fertilizer transfer container of the present invention; Figure 4 It is a schematic diagram of the connection structure of the automatic docking mechanism of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the structure of the pushing mechanism of the present invention; Figure 7 It is a schematic diagram of the top view of the pushing mechanism of the present invention; Figure 8 It is a schematic structural diagram of the centrifugal mixing mechanism of the present invention.

[0018] In the figure: 1. working chamber; 2. connecting column; 3. conveying pipe; 4. connecting head; 5. automatic docking mechanism; 501. closing door; 502. control strip; 503. pull rope; 504. return spring; 505. fixing block; 506. driving strip; 507. pushing strip; 6. fertilizer transfer container; 7. centrifugal mixing mechanism; 701. driving motor; 702. transmission gear; 703. transmission ring; 704. connecting frame; 705. storage ring; 8. pushing mechanism; 801. servo motor; 802. main sprocket; 803. transmission sprocket; 804. chain; 805. driving rod; 806. connecting ring; 807. pushing frame; 808. pushing block. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1-8As shown, the present invention provides a technical solution: a farmland fertilizer quality detection device, including a working bin 1, a connecting column 2 is fixedly connected to the center position of the working bin 1, and the connecting column 2 is hollow, a conveying pipe 3 is fixedly connected to the inside of the connecting column 2, and a connecting head 4 is fixedly connected to the top of the conveying pipe 3, a fertilizer transfer container 6 is arranged on the top of the connecting head 4, an automatic docking mechanism 5 is movably connected to the bottom end of the fertilizer transfer container 6, a pushing mechanism 8 is movably connected to the top end of the fertilizer transfer container 6, and a centrifugal mixing mechanism 7 is movably connected to the bottom end of the working bin 1.

[0021] When in use, align the bottom end of the fertilizer transfer container 6 with the connector 4 and place it downward, then pull the push frame 807 to the opposite side to move the push block to the top of the fertilizer transfer container 6. At this time, the servo motor 801 is controlled to drive the main sprocket 802 to rotate, and the main sprocket 802 drives the transmission sprocket 803 to rotate through the chain 804. At the same time, the driving rod 805 contracts and drives the rotation to move the connecting ring 806 downward. At this time, the pushing bar 507 is pulled by the connecting ring 806, and its top end pushes the pushing block downward to squeeze the inside of the fertilizer transfer container 6, which is conducive to the accuracy of auxiliary fertilizer distribution and ensures the stability of the equipment. At this time, the driving bar 506 supports the top end of the pushing bar 507, and the other end of the driving bar 506 is tilted downward to pull the pull rope 503 to move outward. At the same time, the other end of the pull rope 503 moves the control bar 502 from the fertilizer transfer container to the outside. The bottom end of the container 6 is pulled, and during this process, the return spring 504 is squeezed and contracted, and then the closing door 501 follows the control strip 502 to move downward and slowly open, and the waste flows into the detection cup inside the limit ring along the connector 4 and the conveying tube 3, which is conducive to realizing automatic distribution of fertilizers and avoiding excessive contact during manual distribution to cause inaccurate detection. Secondly, the automation of the equipment is improved. At this time, the drive motor 701 is started to slowly drive the transmission gear 702 to drive the connecting ring 806 to rotate, and the connecting frame 704 rotates following the trajectory of the connecting ring 806, so that the detection cup at the bottom end of the conveying tube 3 is replaced. After the distribution is completed, the speed of the drive motor 701 is accelerated, so that the connecting frame 704 drives the limit ring to rotate at a high speed, and the fertilizer and the reagent in the detection cup are fully mixed, so that the fertilizer and the reagent are mixed while the detection cup is replaced for filling, which is conducive to multiple tests at the same time.

[0022] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the automatic docking mechanism 5 includes a closing door 501, a control bar 502, a pull rope 503, a reset spring 504, a fixed block 505, a driving bar 506 and a pushing bar 507. The closing door 501 is provided with two and arranged in a semicircle. The pull rope 503 is fixedly connected to one end of the control bar 502, and the other end of the pull rope 503 passes through the fixed block 505 and is fixedly connected to one end of the driving bar 506. The middle position of the driving bar 506 is movably connected to the middle position of the fixed block 505 through a rotating shaft. The reset spring 504 is sleeved on The outer side of the pull rope 503, and the return spring 504 is located on the opposite side of the control strip 502 and the fixed block 505, the push strip 507 is located directly below the drive strip 506, the bottom end of the fertilizer transfer container 6 is in the form of a funnel, and the closing door 501 is symmetrically connected to the fertilizer transfer container 6, one end of the control strip 502 close to the closing door 501 is located inside the fertilizer transfer container 6, and the other end of the control strip 502 passes through the fertilizer transfer container 6 and extends to its outside, and the bottom end of the push strip 507 is fixedly connected to the outside of the connector 4.

[0023] The push bar 507 is subjected to the pulling force of the connecting ring 806, and its top end pushes the push block downward to squeeze the inside of the fertilizer transfer container 6. At this time, the driving bar 506 supports the top of the pushing bar 507, and the other end of the driving bar 506 tilts downward to pull the pull rope 503 to move outward. At the same time, the other end of the pull rope 503 pulls the control bar 502 from the bottom of the fertilizer transfer container 6. In this process, the reset spring 504 is squeezed and contracted, and then the closing door 501 follows the control bar 502 to move downward and slowly open, and the waste flows into the detection cup inside the limit ring along the connecting head 4 and the conveying pipe 3, which is conducive to realizing automatic distribution of fertilizers and avoiding inaccurate detection caused by excessive contact during manual distribution, and secondly improving the automation of the equipment.

[0024] like Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the pushing mechanism 8 includes a servo motor 801, a main sprocket 802, a transmission sprocket 803, a chain 804 and a driving rod 805. The main sprocket 802 is fixedly connected to the output end of the servo motor 801. There are two transmission sprockets 803, and the main sprocket 802 and the two transmission sprockets 803 are connected by the chain 804. The driving rod 805 is respectively fixedly connected to the axis of the transmission sprocket 803, and the outer side of the driving rod 805 is provided with a thread. The servo motor 801 is fixedly connected to the bottom end of the working bin 1. The driving rod 805 is fixedly connected to the axis of the transmission sprocket 803. One end of the rod 805 away from the transmission sprocket 803 passes through the working chamber 1 and extends into the interior thereof. The pushing mechanism 8 also includes a connecting ring 806, a pushing rack 807 and a pushing block 808. The pushing rack 807 is provided with two and its bottom ends are movably connected to the outer side of the connecting ring 806 through a rotating shaft and a torque spring respectively. The pushing block 808 is semicircular and is fixedly connected to the other end of the pushing rack 807. The connecting ring 806 is located on the outer side of the connecting column 2 and is movably connected to the outer side of the driving rod 805 through a thread.

[0025] By aligning the bottom end of the fertilizer transfer container 6 with the connecting head 4 and placing it downward, and then pulling the pushing frame 807 to the opposite side, the pushing block is moved to the top of the fertilizer transfer container 6. At this time, the servo motor 801 is controlled to drive the main sprocket 802 to rotate, and the main sprocket 802 drives the transmission sprocket 803 to rotate through the chain 804. At the same time, the driving rod 805 contracts and rotates to move the connecting ring 806 downward. At this time, the pushing bar 507 is pulled by the connecting ring 806, and its top end pushes the pushing block downward to squeeze the inside of the fertilizer transfer container 6, which is beneficial to assist the accuracy of fertilizer distribution and ensure the stability of the equipment.

[0026] like Figure 1 , Figure 2 and Figure 8 As shown, the centrifugal mixing mechanism 7 includes a driving motor 701, a transmission gear 702, a transmission ring 703, a connecting frame 704 and a storage ring 705. The transmission gear 702 is fixedly connected to the output end of the driving motor 701, the connecting frame 704 is fixedly connected to the inside of the transmission ring 703, a number of storage rings 705 are arranged and fixedly connected to the top of the connecting frame 704 in a ring-shaped arrangement, a sawtooth is provided on the outer side of the transmission ring 703, the transmission gear 702 is meshed with the transmission ring 703 through the sawtooth, the connecting ring 806 and the transmission gear 702 are both rotatably connected to the inside of the bottom end of the working chamber 1, and the driving motor 701 is fixedly connected to the bottom end of the working chamber 1.

[0027] The driving motor 701 slowly drives the transmission gear 702 to drive the connecting ring 806 to rotate, and the connecting frame 704 rotates following the trajectory of the connecting ring 806, so that the detection cup at the bottom of the conveying tube 3 is replaced. After the distribution is completed, the speed of the driving motor 701 is accelerated, so that the connecting frame 704 drives the limit ring to rotate at a high speed, and the fertilizer and the reagent in the detection cup are fully mixed, so that the fertilizer and the reagent can be mixed while the detection cup is replaced for filling, which is conducive to performing multiple tests at the same time.

[0028] Working principle: When in use, align the bottom end of the fertilizer transfer container 6 with the connector 4 and place it downward, then pull the push frame 807 to the opposite side to move the push block to the top of the fertilizer transfer container 6. At this time, the servo motor 801 is controlled to drive the main sprocket 802 to rotate, and then the main sprocket 802 drives the transmission sprocket 803 to rotate through the chain 804. At the same time, the driving rod 805 contracts and drives the rotation to move the connecting ring 806 downward. At this time, the pushing bar 507 is pulled by the connecting ring 806, and its top end pushes the pushing block downward to squeeze the inside of the fertilizer transfer container 6. At this time, the driving bar 506 supports the top of the pushing bar 507, and the other end of the driving bar 506 tilts downward to pull the pull rope 5 03 moves outward, and at the same time, the other end of the pull rope 503 pulls the control strip 502 from the bottom of the fertilizer transfer container 6. During this process, the reset spring 504 is squeezed and contracted, and then the closing door 501 follows the control strip 502 to move downward and slowly open, and the waste flows into the detection cup inside the limiting ring along the connecting head 4 and the conveying pipe 3. At this time, the driving motor 701 is started to slowly drive the transmission gear 702 to drive the connecting ring 806 to rotate, and the connecting frame 704 rotates following the trajectory of the connecting ring 806, so that the detection cup at the bottom of the conveying pipe 3 is replaced. After the distribution is completed, the speed of the driving motor 701 is accelerated, so that the connecting frame 704 drives the limiting ring to rotate at a high speed, and the fertilizer and reagent in the detection cup are fully mixed.

[0029] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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 the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A farmland fertilizer quality detection device, comprising a working chamber (1), characterized in that: A connecting column (2) is fixedly connected to the center position of the working bin (1), and the connecting column (2) is in a hollow state. A conveying pipe (3) is fixedly connected to the inside of the connecting column (2), and a connecting head (4) is fixedly connected to the top of the conveying pipe (3). A fertilizer transfer container (6) is arranged at the top of the connecting head (4). An automatic docking mechanism (5) is movably connected to the bottom of the fertilizer transfer container (6). A pushing mechanism (8) is movably connected to the top of the fertilizer transfer container (6). A centrifugal mixing mechanism (7) is movably connected to the bottom of the working bin (1).

2. A farmland fertilizer quality detection device according to claim 1, characterized in that: The automatic docking mechanism (5) comprises a closing door (501), a control bar (502), a pull rope (503), a return spring (504), a fixed block (505), a driving bar (506) and a pushing bar (507). The closing door (501) is provided with two pull ropes (503) arranged in a semicircle. The pull rope (503) is fixedly connected to one end of the control bar (502), and the other end of the pull rope (503) passes through the fixed block (505) and is fixedly connected to one end of the driving bar (506). The middle position of the driving bar (506) is movably connected to the middle position of the fixed block (505) via a rotating shaft. The return spring (504) is sleeved on the outside of the pull rope (503), and the return spring (504) is located on the opposite side of the control bar (502) and the fixed block (505). The pushing bar (507) is located directly below the driving bar (506).

3. A farmland fertilizer quality detection device according to claim 2, characterized in that: The bottom end of the fertilizer transfer container (6) is in the form of a funnel, and the closing door (501) is symmetrically and movably connected to the fertilizer transfer container (6); one end of the control strip (502) close to the closing door (501) is located inside the fertilizer transfer container (6), and the other end of the control strip (502) passes through the fertilizer transfer container (6) and extends to the outside thereof; the bottom end of the push strip (507) is fixedly connected to the outside of the connector (4).

4. The farmland fertilizer quality detection device according to claim 1, characterized in that: The pushing mechanism (8) comprises a servo motor (801), a main sprocket (802), a transmission sprocket (803), a chain (804) and a driving rod (805); the main sprocket (802) is fixedly connected to the output end of the servo motor (801); two transmission sprockets (803) are provided, and the main sprocket (802) and the two transmission sprockets (803) are connected in transmission via the chain (804); the driving rods (805) are respectively fixedly connected to the axis of the transmission sprocket (803), and the outer sides of the driving rods (805) are provided with threads.

5. A farmland fertilizer quality detection device according to claim 4, characterized in that: The servo motor (801) is fixedly connected to the bottom end of the working chamber (1), and one end of the driving rod (805) away from the transmission sprocket (803) passes through the working chamber (1) and extends into the interior thereof.

6. A farmland fertilizer quality detection device according to claim 4, characterized in that: The pushing mechanism (8) further comprises a connecting ring (806), a pushing frame (807) and a pushing block (808); the pushing frame (807) is provided with two and the bottom ends thereof are respectively movably connected to the outside of the connecting ring (806) via a rotating shaft and a torque spring; the pushing block (808) is semicircular and is fixedly connected to the other end of the pushing frame (807); the connecting ring (806) is located on the outside of the connecting column (2) and is movably connected to the outside of the driving rod (805) via a thread.

7. The farmland fertilizer quality detection device according to claim 1, characterized in that: The centrifugal mixing mechanism (7) comprises a driving motor (701), a transmission gear (702), a transmission ring (703), a connecting frame (704) and a storage ring (705); the transmission gear (702) is fixedly connected to the output end of the driving motor (701); the connecting frame (704) is fixedly connected to the inside of the transmission ring (703); and a plurality of storage rings (705) are arranged in a ring-shaped array and fixedly connected to the top end of the connecting frame (704).

8. A farmland fertilizer quality detection device according to claim 7, characterized in that: The transmission ring (703) is provided with saw teeth on its outer side, and the transmission gear (702) is meshed with the transmission ring (703) via the saw teeth. The connection ring (806) and the transmission gear (702) are both rotatably connected to the inside of the bottom end of the working chamber (1), and the drive motor (701) is fixedly connected to the bottom end of the working chamber (1).

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