A device for detecting plant nutrients

CN224933720UActive Publication Date: 2026-11-03INSTITUTE OF MICROBIOLOGY JIANGXI ACADEMY OF SCIENCES (JIANGXI INSTITUTE OF WATERSHED ECOLOGY) +2
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Patent Information

Application Number
CN202522557795.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-11-03
Estimated Expiration
2035-12-02

AI Technical Summary

Technical Problem

In existing technologies, incomplete disruption of plant cell walls affects the accuracy of detection of plant active substance extracts.

Method used

The method employs tamping and rotary grinding, with a servo motor driving a rotating threaded rod and a stepper motor to achieve repeated tamping and rotation of the tamping cylinder within the crushing tank. Combined with an electric telescopic rod pushing an annular wiping disc, this ensures that the plant samples are uniformly and completely crushed.

Benefits of technology

It improves the uniformity of plant sample fragmentation and the accuracy of detecting extracted liquid substances, avoiding detection deviations caused by sample residues on the inner wall.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of detection devices for plant nutrient substance, including base, the top of base is fixedly arranged with protective frame, the inside of protective frame is provided with detection microscope. The detection device for plant nutrient substance, through servo motor drives rotating screw hanger rod to rotate cyclically, make its U type fixed frame cyclically up and down reciprocating motion, through stamping and crushing cylinder repeatedly crushes in the inside of stamping and crushing jar, while cooperating with stepping motor stamping and crushing cylinder rotates in its inside, stamping and crushing cylinder is formed with the state of rotating and crushing plant sample by the cone wall of vertebral body and stamping and crushing jar inside, again cooperate with electric telescopic rod drive annular rubbing dish reciprocating displacement on the surface of push supporting cylinder, residual plant sample attached or pushed up on its stamping and crushing jar inner wall upper side is pushed to the area of stamping and crushing jar rotating and crushing and is crushed multiple times, to guarantee that plant sample in stamping and crushing jar can be fully crushed, in turn make its plant sample crush more uniform completely.
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Description

Technical Field

[0001] This utility model relates to the field of plant substance detection technology, specifically to a device for detecting plant nutrients. Background Technology

[0002] Plant nutrient composition detection involves the detection and analysis of the content of various nutrients within plants to assess their nutritional value and quality. This includes the separation and purification of bioactive substances, commonly achieved through gel permeation chromatography (GPC). GPC primarily utilizes molecular sieving, separating compounds based on the pore size of the gel and the size of the molecules being separated. Currently, most commercially available devices for separating and purifying plant bioactive substances employ GPC. This method involves introducing a plant mixture into a gel for separation. However, this process requires disrupting the plant cell walls, necessitating the use of a stirring rod to break down the cells.

[0003] Among them, the Chinese patent with announcement number CN 116990296 A, which is a detection device and detection method for plant extracts, only uses the up-and-down displacement of a fixed frame to push and control the drive motor to drive the stirring rod to stir and break the plant sample inside the mixing cylinder when extracting plant nutrients using the device. However, in actual operation, it is difficult to completely break the plant cell walls inside the mixing cylinder, and a large amount of incompletely broken plant samples will adhere to the inner wall of the mixing cylinder, resulting in incomplete breaking and thus affecting the accuracy of the detection of active liquid substances extracted from plants.

[0004] Therefore, in order to address the above problems, this application presents an invention for detecting plant nutrients, which can effectively crush plant samples more evenly and completely through tamping and grinding, making the extraction and detection of plant liquid substances more accurate. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a device for detecting plant nutrients, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: A device for detecting plant nutrients, comprising a base, a protective frame fixedly mounted on the top of the base, a detection microscope disposed inside the protective frame, the base plate of the detection microscope placed on the base, a limiting bottom cylinder fixedly mounted on the top left side of the base, a buffer seat inserted into the bottom of the limiting bottom cylinder, a crushing vessel slidably inserted into the top of the buffer seat, threaded fasteners threaded into both sides of the limiting bottom cylinder, a support frame disposed on the left side of the protective frame, a sliding member fixedly mounted on the right side of the support frame, a limiting groove for use with the sliding member being opened on the left side of the protective frame, the right side of the sliding member being inserted into the limiting groove opened on the left side of the sliding member and slidably connected to the inner wall of the limiting groove opened on the left side of the sliding member, a servo motor fixedly mounted on the top of the support frame, the output shaft of the servo motor being fixedly connected to the top end of a rotating threaded rod, the bottom end of the rotating threaded rod passing through the middle of the rotating threaded rod and extending to the groove inside the U-shaped fixed frame. A positioning block is threadedly fitted into the middle of the rotating threaded rod. The surface of the positioning block is fixedly embedded in the grooves of the two side wing plates of the U-shaped fixing frame. A stepper motor is fixedly installed in the groove of the U-shaped fixing frame. A rotating shaft is fixedly mounted on the output shaft of the stepper motor. The bottom end of the rotating shaft passes through the middle of the horizontal plate of the U-shaped fixing frame, and the end is fixedly connected to the top of the push-support cylinder. An annular troweling disc is movably fitted onto the surface of the push-support cylinder. The top of the annular troweling disc is fixedly connected to the push rod of the electric telescopic rod. The top cylinder of the electric telescopic rod... The top of the device is fixedly installed at the bottom of the U-shaped fixed frame. The top of the annular trowel is hinged with two lower support hinge rods, and the top ends of the lower support hinge rods are hinged with upper support hinge rods. The top ends of the two upper support hinge rods are hinged to the bottom surface of the U-shaped fixed frame. The bottom of the push support cylinder is fixedly provided with a tamping cylinder. The inner wall of the tamping tank is set into a conical space that cooperates with the tamping cylinder. The left side of the groove of the protective frame is fixedly installed with a placement sleeve. The inner ring of the placement sleeve is fitted with a temporary storage tank. The bottom of the temporary storage tank is equipped with a liquid discharge control valve.

[0009] Preferably, the support frame has side wing blocks fixedly installed on both the front and back sides, and an adjusting push screw passes through the side of the side wing block. The surface of the adjusting push screw is threaded to the inner wall of the side wing block, and the end of the adjusting push screw is rotatably connected to a resistance flat push plate.

[0010] Preferably, the front and back of the crushing jar are fixedly provided with limiting protrusions, and the front and back of the buffer seat are evenly provided with sliding grooves that cooperate with the limiting protrusions. The surface of the limiting protrusions is slidably connected to the inner wall of the sliding grooves opened inside the buffer seat. Two powerful return springs are fixedly provided inside the buffer seat, and the other end of the powerful return springs is fixedly connected to the inner wall of the groove opened at the bottom of the crushing jar.

[0011] Preferably, the end of the threaded fastener is rotatably provided with an arc-shaped pressure plate, and the inner wall of the arc-shaped pressure plate is in pressure contact with the surface of the buffer seat.

[0012] Preferably, the bottom surface of the support frame is fixedly provided with two positioning and fixing slide rods, and the surfaces of the two positioning and fixing slide rods slide through the surface of the positioning and fixing slide rod.

[0013] (III) Beneficial Effects

[0014] This invention provides a device for detecting plant nutrients. It has the following beneficial effects:

[0015] (1) The device for detecting plant nutrients uses a servo motor to drive the rotating threaded rod to rotate in both directions at a frequency. Utilizing the thread displacement principle of the rotating threaded rod and the positioning block, the U-shaped fixed frame moves up and down in a cyclical manner. This causes the tamping cylinder at the bottom of the pusher cylinder to repeatedly crush the sample inside the crushing jar. At the same time, a stepper motor drives the pusher cylinder and the tamping cylinder to rotate inside the crushing jar via a rotating shaft. This allows the tamping cylinder to rotate and crush the plant sample by means of the cone body and the conical wall inside the crushing jar. Meanwhile, an electric telescopic rod drives the annular wiping disc to move up and down on the surface of the pusher cylinder, pushing the residual plant sample attached to or pushed up around the inner wall of the crushing jar to the area of ​​rotation and crushing in the crushing jar. This ensures that the plant sample inside the crushing jar is fully crushed, resulting in more uniform and complete crushing of the plant sample, thus ensuring more accurate detection of extracted plant liquid substances. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of a partial structure of the present invention;

[0018] Figure 3 The structure of this utility model Figure 1 Enlarged view of point A;

[0019] Figure 4 The structure of this utility model Figure 3 Enlarged view of point B;

[0020] Figure 5 The structure of this utility model Figure 3 Enlarged internal view of point B;

[0021] Figure 6 The structure of this utility model Figure 3 Enlarged view of point C;

[0022] Figure 7 The structure of this utility model Figure 3 Enlarged diagram of point D;

[0023] Figure 8 The structure of this utility model Figure 4 Enlarged view of point E;

[0024] Figure 9 The structure of this utility model Figure 5 Enlarged schematic diagram at point F.

[0025] In the diagram: 1. Base; 2. Protective frame; 3. Detection microscope; 4. Limiting bottom cylinder; 5. Buffer seat cylinder; 6. Crushing tank; 7. Limiting protrusion; 8. Threaded fastener; 9. Arc-shaped pressure plate; 10. Powerful return spring; 11. Support frame; 12. Sliding component; 13. Side wing block; 14. Adjusting push screw; 15. Resistance flat push plate; 16. Servo motor; 17. Rotating threaded rod; 18. Positioning block; 19. Positioning and fixing slide rod; 20. U-shaped fixing frame; 21. Stepper motor; 22. Rotating shaft; 23. Pushing cylinder; 24. Annular troweling disc; 25. Lower support hinge rod; 26. Upper support hinge rod; 27. Crushing cylinder; 28. Electric telescopic rod; 29. ​​Placement sleeve; 30. Temporary storage tank; 31. Liquid discharge control valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-9As shown, this utility model provides a technical solution: a device for detecting plant nutrients, including a base 1, a protective frame 2 fixedly installed on the top of the base 1, a detection microscope 3 installed inside the protective frame 2, the base plate of the detection microscope 3 placed on the base 1, a limiting bottom cylinder 4 fixedly installed on the top left side of the base 1, a buffer seat cylinder 5 inserted into the bottom of the limiting bottom cylinder 4, a crushing jar 6 slidably inserted into the top of the buffer seat cylinder 5, limiting protrusions 7 fixedly installed on both the front and back of the crushing jar 6, and sliding grooves evenly opened on the front and back of the buffer seat cylinder 5 to cooperate with the limiting protrusions 7. The surface of the limiting protrusions 7 is slidably connected to the inner wall of the sliding grooves opened inside the buffer seat cylinder 5. Through the setting of the limiting protrusions 7, the device achieves the function of limiting the protrusions 7 to pass through the buffer seat cylinder 5. 7. The crushing tank 6 is vertically displaced within the internal groove, allowing it and the buffer seat 5 to move vertically and horizontally while being synchronously positioned in the rotational direction. Threaded fasteners 8 are threaded into both sides of the limiting bottom cylinder 4. An arc-shaped pressure plate 9 is rotatably mounted at the end of each threaded fastener 8. The inner wall of the arc-shaped pressure plate 9 presses against the surface of the buffer seat 5. Through the threaded fasteners 8 and the arc-shaped pressure plate 9, the buffer seat 5 is positioned by the threaded push-pressure principle between the threaded fasteners 8 and the limiting bottom cylinder 4. Two powerful return springs 10 are fixedly installed inside the buffer seat 5. The other end of each powerful return spring 10 is fixedly connected to the inner wall of a groove at the bottom of the crushing tank 6. The arrangement of 10 and buffer seat 5 ensures that the crushing pot 6 is in a downward buffer displacement space when subjected to downward crushing. This prevents the plant inside the crushing pot 6 from being gradually crushed by the crushing cylinder 27 until the limiting protrusion 7 on the outside of the crushing pot 6 moves to the lowest limit of the groove in the buffer seat 5, thus completing the lowest-level crushing. This also prevents the servo motor 16 from being directly subjected to hard contact pressure when it drives the rotating threaded rod 17 to rotate. The strong return spring 10 provides downward constraint buffer space for the crushing pot 6, preventing overload damage to the servo motor 16 and ensuring its continuous normal operation. A support frame 11 is provided on the left side of the protective frame 2. A sliding member 12 is fixedly installed on the right side of the protective frame 2. A limiting groove for use with the sliding member 12 is opened on the left side of the protective frame 2. The right side of the sliding member 12 is inserted into the limiting groove opened on the left side of the sliding member 12 and is slidably connected with the inner wall of the limiting groove opened on the left side of the sliding member 12. Side wing blocks 13 are fixedly installed on both the front and back of the support frame 11. An adjusting push screw 14 passes through the side of the side wing block 13. The surface of the adjusting push screw 14 is threadedly connected to the inner wall of the side wing block 13. The end of the adjusting push screw 14 is rotatably connected to a resistance flat push plate 15. Through the arrangement of the sliding member 12, the side wing block 13, the adjusting push screw 14 and the resistance flat push plate 15, the sliding member 12 can slide up and down in the side wall groove of the protective frame 2.The height of the rotating threaded rod 17 is adjusted to allow for adjustment of the vertical displacement range of the U-shaped fixed frame 20 according to actual conditions. The height of the support frame 11 is positioned by adjusting the screw thread of the push screw 14, utilizing the resistance of the push plate 15 and the opposing support resistance of the protective frame 2. A servo motor 16 is fixedly installed on the top of the support frame 11, and the output shaft of the servo motor 16 is fixedly connected to the top of the rotating threaded rod 17. The bottom end of the rotating threaded rod 17 passes through the middle of the rotating threaded rod 17 and extends to the groove inside the U-shaped fixed frame 20. A positioning block 18 is threadedly fitted into the middle of the rotating threaded rod 17, and the surface of the positioning block 18 is fixedly embedded on both sides of the U-shaped fixed frame 20. Within the groove of the wing plate, two positioning and fixing slide rods 19 are fixedly installed on the bottom surface of the support frame 11. The surfaces of the two positioning and fixing slide rods 19 slide through each other. By setting the positioning and fixing slide rods 19, the positioning block 18 is prevented from rotating when pushed up and down. That is, in conjunction with the rotation of the threaded hanging rod 17, the positioning block 18 can be driven to move stably in the vertical direction. A stepper motor 21 is fixedly installed in the groove of the U-shaped fixing frame 20. The output shaft of the stepper motor 21 is fixedly provided with a rotating shaft 22. The bottom end of the rotating shaft 22 passes through the middle of the horizontal plate of the U-shaped fixing frame 20, and the end is fixedly connected to the top of the push support cylinder 23. An annular troweling disc 24 is movably sleeved on the surface of the push support cylinder 23. The top of the annular wiping disc 24 is fixedly connected to the push rod of the electric telescopic rod 28. The top of the top cylinder of the electric telescopic rod 28 is fixedly installed at the bottom of the U-shaped fixed frame 20. Through the arrangement of the annular wiping disc 24 and the electric telescopic rod 28, the annular wiping disc 24 is moved back and forth on the surface of the push cylinder 23 by the electric telescopic rod 28. This pushes the residual plant samples attached or pressed up to the upper and lower sides of the inner wall of the crushing tank 6 to the area of ​​the crushing tank 6 for multiple crushing. This ensures that the plant samples in the crushing tank 6 can be fully crushed, avoiding the situation where the residual plant samples on the inner wall of the crushing tank 6 are difficult to crush. The top of the annular wiping disc 24 is hinged with two lower support hinge rods 25. The top end of the lower support hinge rods 25 is hinged. The frame is equipped with upper support hinge rods 26, the tops of which are hinged to the bottom surface of the U-shaped fixed frame 20. Through the upper and lower support hinge rods 26 and 25, the annular trowel disc 24 can be stably pushed and displaced vertically by the hinge extension of the lower and upper support hinge rods 25 and 26. A tamping cylinder 27 is fixedly installed at the bottom of the push-support cylinder 23. The inner wall of the tamping tank 6 is designed as a conical space to cooperate with the tamping cylinder 27. The conical design of the tamping cylinder 27 and the inner wall of the tamping tank 6 allows the servo motor 16 to drive the rotating threaded rod 17 to rotate forward and backward at a specific frequency. Utilizing the threaded displacement principle of the rotating threaded rod 17 and the positioning block 18, the U-shaped fixed frame 20 is driven to move up and down cyclically.This means that the pushing cylinder 23, with its bottom-mounted tamping cylinder 27, crushes the plant sample inside the crushing tank 6. Simultaneously, the stepper motor 21, via the rotating shaft 22, drives the pushing cylinder 23 and the tamping cylinder 27 to rotate inside the crushing tank 6. This allows the cone-shaped part of the tamping cylinder 27 to rotate and crush the plant sample completely against the conical wall inside the crushing tank 6, resulting in more efficient crushing. A placement sleeve 29 is fixedly installed on the left side of the groove in the protective frame 2. A temporary storage tank 30 is fitted inside the placement sleeve 29. A liquid discharge control valve 31 is installed at the bottom of the temporary storage tank 30. The temporary storage tank 30 allows for the temporary storage of the plant liquid to be tested. The liquid discharge control valve 31 allows for the stable and efficient dripping of a fixed amount of the plant liquid onto the testing glass plate, facilitating testing.

[0028] In use, the plant sample to be crushed is first placed inside the crushing jar 6. Then, the servo motor 16 drives the rotating threaded rod 17 to rotate forward and backward at a certain frequency. Utilizing the thread displacement principle of the rotating threaded rod 17 and the positioning block 18, the U-shaped fixed frame 20 is driven to move up and down cyclically. This causes the crushing cylinder 27 at the bottom of the push-support cylinder 23 to repeatedly crush the plant sample inside the crushing jar 6. Simultaneously, the stepper motor 21 drives the push-support cylinder 23 and the crushing cylinder 27 to rotate inside the crushing jar 6 via the rotating shaft 22. This allows the cone of the crushing cylinder 27 to rotate and crush the plant sample completely against the cone wall inside the crushing jar 6, making the crushing of the plant sample more efficient. At the same time, the electric telescopic rod 28 drives the annular troweling disc 24 to move up and down on the surface of the push-support cylinder 23, further crushing the plant sample. The residual plant samples attached or pushed up to the upper part of the inner wall of the crushing jar 6 are pushed to the area of ​​the crushing jar 6 for crushing to ensure that the plant samples in the crushing jar 6 are fully crushed. After crushing, the threaded fasteners 8 on both sides of the limiting bottom cylinder 4 are loosened by rotating, and then the crushing jar 6 is moved out from the top. Then the crushed plant liquid material in the crushing jar 6 is poured into the temporary storage tank 30 set on the protective frame 2 for later use. When it is necessary to take the sampled plant liquid, take out the glass slide dedicated to the detection microscope 3, and drip the plant liquid in the temporary storage tank 30 onto the glass slide in a certain amount through the liquid discharge control valve 31. Then place it on the detection stage of the detection microscope 3 for detection. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0029] In summary, this device for detecting plant nutrients uses a servo motor 16 to drive a rotating threaded rod 17 to rotate in both directions at a specific frequency. Utilizing the thread displacement principle between the rotating threaded rod 17 and the positioning block 18, it drives the U-shaped fixed frame 20 to move up and down cyclically. This causes the tamping cylinder 27, located at the bottom of the push-support cylinder 23, to repeatedly crush the sample inside the crushing jar 6. Simultaneously, a stepper motor 21, via a rotating shaft 22, drives the push-support cylinder 23 and the tamping cylinder 27 to rotate inside the crushing jar 6. This allows the tamping cylinder 27 to rotate and crush the plant sample against the conical wall inside the crushing jar 6. Furthermore, an electric telescopic rod 28 drives an annular wiping disc 24 to move up and down on the surface of the push-support cylinder 23, pushing any remaining plant samples that have adhered to or been pushed onto the inner wall of the crushing jar 6 back to the rotating crushing area for further crushing. This ensures that the plant sample inside the crushing jar 6 is thoroughly crushed, resulting in more uniform and complete crushing and more accurate detection of extracted plant liquid substances.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting plant nutrients, comprising a base (1), characterized in that: A protective frame (2) is fixedly installed on the top of the base (1). A detection microscope (3) is installed inside the protective frame (2). The bottom plate of the detection microscope (3) is placed on the base (1). A limiting bottom cylinder (4) is fixedly installed on the top left side of the base (1). A buffer seat cylinder (5) is inserted into the bottom of the limiting bottom cylinder (4). A crushing tank (6) is slidably inserted into the top of the buffer seat cylinder (5). Threaded fastening bolts (8) are threaded into both sides of the limiting bottom cylinder (4). A support frame (11) is provided on the left side of the protective frame (2), and a sliding member (12) is fixedly provided on the right side of the support frame (11). A limiting groove for use with the sliding member (12) is opened on the left side of the protective frame (2). The right side of the sliding member (12) is inserted into the limiting groove opened on the left side of the sliding member (12) and is slidably connected to the inner wall of the limiting groove opened on the left side of the sliding member (12). A servo motor (16) is fixedly installed on the top of the support frame (11). The output shaft of 16) is fixedly connected to the top end of the rotating threaded rod (17). The bottom end of the rotating threaded rod (17) passes through the middle part of the rotating threaded rod (17) and extends to the groove of the U-shaped fixed frame (20). The middle part of the rotating threaded rod (17) is threaded with a positioning block (18). The surface of the positioning block (18) is fixedly embedded in the groove of the two side wing plates of the U-shaped fixed frame (20). A stepper motor (21) is fixedly installed in the groove of the U-shaped fixed frame (20). The output shaft of the stepper motor (21) is fixedly equipped with a rotating shaft (22). The bottom end of the rotating shaft (22) passes through the middle of the horizontal plate of the U-shaped fixed frame (20), and the end is fixedly connected to the top of the push support cylinder (23). An annular troweling disc (24) is movably sleeved on the surface of the push support cylinder (23). The top of the annular troweling disc (24) is fixedly connected to the push rod of the electric telescopic rod (28). The top end of the top cylinder of the electric telescopic rod (28) is fixedly installed on... At the bottom of the U-shaped fixed frame (20), the top of the annular troweling disc (24) is hinged with two lower support hinge rods (25), the top end of the lower support hinge rods (25) is hinged with an upper support hinge rod (26), the top ends of the two upper support hinge rods (26) are hinged to the bottom surface of the U-shaped fixed frame (20), the bottom of the push support cylinder (23) is fixedly provided with a tamping cylinder (27), and the inner wall of the tamping tank (6) is set as a cone-shaped space to cooperate with the tamping cylinder (27); A placement sleeve (29) is fixedly installed on the left side of the groove of the protective frame (2). A temporary storage tank (30) is fitted inside the placement sleeve (29). A liquid discharge control valve (31) is installed at the bottom of the temporary storage tank (30).

2. The device for detecting plant nutrients according to claim 1, characterized in that: Side wing blocks (13) are fixedly provided on both the front and back of the support frame (11). An adjusting push screw (14) passes through the side of the side wing block (13). The surface of the adjusting push screw (14) is threadedly connected to the inner wall of the side wing block (13). A resistance flat push plate (15) is rotatably connected to the end of the adjusting push screw (14).

3. The device for detecting plant nutrients according to claim 1, characterized in that: The front and back of the crushing jar (6) are fixedly provided with limiting protrusions (7). The front and back of the buffer seat (5) are evenly provided with sliding grooves that cooperate with the limiting protrusions (7). The surface of the limiting protrusions (7) is slidably connected to the inner wall of the sliding grooves opened inside the buffer seat (5). Two powerful return springs (10) are fixedly provided inside the buffer seat (5). The other end of the powerful return springs (10) is fixedly connected to the inner wall of the groove opened at the bottom of the crushing jar (6).

4. The device for detecting plant nutrients according to claim 1, characterized in that: The end of the threaded fastener (8) is rotatably provided with an arc-shaped pressure plate (9), and the inner wall of the arc-shaped pressure plate (9) is in contact with the surface of the buffer seat (5).

5. The device for detecting plant nutrients according to claim 1, characterized in that: The bottom surface of the support frame (11) is fixedly provided with two positioning and fixing slide rods (19), and the surfaces of the two positioning and fixing slide rods (19) slide through the surface of the positioning and fixing slide rods (19).

Citation Information

Patent Citations

  • Device and method for detecting plant extract

    CN116990296A