Sampling device for soil fertilizer nutrient detection

Abstract

The utility model provides a sampling device for soil fertilizer nutrient detection, which is characterized in that a sampling rod is connected with an output shaft of a driving device, a drilling barrel is arranged in the sampling barrel, and the outer wall of the sampling barrel is tightly attached to the inner wall of the drilling barrel; an annular clamping groove is formed in the top in the sampling barrel, an ejector plate is arranged in the clamping groove, the upper end of the sampling barrel is inserted into the clamping groove, the ejector plate is located above the sampling barrel, a plurality of arc-shaped openings which are evenly distributed in the circumferential direction are formed in the top of the sampling barrel, the arc-shaped openings are communicated with the clamping groove, and the lower ends of a plurality of ejector rods penetrate through the arc-shaped openings to be fixedly connected with the ejector plate. A movable lantern ring is arranged in the middle of the sampling rod, the upper end of the ejector rod is fixedly connected with the lantern ring, and the sum of the length of the ejector rod and the length of the sampling barrel is larger than the length of the drilling barrel. The sampling device is provided with the detachable sampling barrel, the sampling barrel is placed in the drilling barrel, after sampling is completed, the drilling barrel can be ejected out and taken down through the ejection plate, then the drilling barrel is directly placed in the temporary storage box, and a new sampling barrel is placed in the drilling barrel so that sampling can be conducted again.

Description

Technical Field

[0001] The utility model relates to the field of soil detection, in particular to a sampling device for soil fertilizer nutrient detection. Background Art

[0002] In modern agricultural production, rational fertilization is one of the key means to ensure crop growth and increase yield. To achieve precise fertilization, accurate measurement of soil nutrients such as nitrogen, phosphorus, and potassium is necessary. Traditional soil sampling methods often use manual tools such as shovels or drills, which are not only labor-intensive but also inefficient. Samples are easily contaminated, affecting the accuracy of test results. Utility Model Content

[0003] Based on the above technical problems, the utility model proposes a sampling device for soil fertilizer nutrient detection.

[0004] The top of the sampling tube is provided with an annular groove, and the groove is provided with an annular ejection plate, and the upper end of the sampling tube is inserted into the groove, and the ejection plate is located above the sampling tube, and the top of the sampling tube is provided with a plurality of arc openings evenly distributed on the circumference, the arc openings are communicated with the grooves, and the lower ends of the plurality of ejector rods pass through the arc openings and are connected and fixed to the ejection plate, and one of the ejector rods passes through each of the arc openings. A movable ring is provided in the middle of the sampling rod, and the upper end of the ejector rod is connected and fixed to the ring. The sum of the lengths of the ejector rod and the sampling tube is greater than the length of the drill tube.

[0005] Preferably, the driving device is a driving motor, and a handle is provided on each of the two opposite sides of the driving device.

[0006] Preferably, the bottom end of the drill barrel is provided with sharp teeth evenly distributed around the circumference.

[0007] Preferably, the cross section of the push rod is an arc-shaped support plate having the same shape as the arc-shaped opening.

[0008] Beneficial effect: The sampling device is provided with a detachable sampling tube, which is placed in the drill tube. After the sampling is completed, the ejection plate can eject the drill tube and remove it, and then directly place it in a temporary storage box. A new sampling tube is placed in the drill tube for sampling again;

[0009] Using different sampling tubes for sampling can prevent the residual soil in the drill barrel from contaminating the new sample. When the sampling tube is taken out, since the sampling tube is tightly connected to the inner wall of the drill barrel, the sampling tube will push out the soil at the bottom of the drill barrel, reducing the residual soil in the drill barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Shows a schematic structural diagram of the utility model;

[0011] Figure 2 Shows a cross-sectional view of the drill barrel of the present invention;

[0012] Figure 3 A schematic diagram of the temporary storage structure of the sampling cylinder is shown. DETAILED DESCRIPTION

[0013] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0014] like Figures 1 to 3 The sampling device for soil fertilizer nutrient detection shown in the figure includes: a driving device 1, a sampling rod 2, a drill tube 3, and a sampling tube 5. The driving device 1 can use a driving motor or other driving device that can drive the sampling rod 2 to rotate. A handle 4 is provided on each side of the driving device 1. During operation, the handles 4 are held with both hands for sampling.

[0015] The sampling rod 2 is connected to the output shaft of the driving device 1, and the driving device 1 drives the sampling rod 2 to rotate. The drill barrel 3 is fixed to the lower end of the sampling rod 2. The drill barrel 3 rotates under the drive of the driving device 1. At this time, the operator applies downward force and the drill barrel 3 will drill into the soil. In order to facilitate drilling, sharp teeth 10 are provided at the bottom end of the drill barrel 3.

[0016] The drill barrel 3 is movably installed in the sampling barrel 5, and the outer wall of the sampling barrel 5 is close to the inner wall of the drill barrel 3; the top of the sampling barrel 5 is provided with an annular groove, and the groove is provided with an annular ejection plate 6. The upper end of the sampling barrel 5 is inserted into the groove, and the ejection plate 6 is located above the sampling barrel 5. The top of the sampling barrel 5 is provided with a plurality of arc-shaped openings 9 evenly distributed around the circumference, and the arc-shaped openings 9 are connected to the groove. The lower ends of a plurality of ejector rods 7 pass through the arc-shaped openings 9 and are connected and fixed to the ejection plate 6. A ejector rod 7 passes through each arc-shaped opening 9, and a movable collar 8 is provided in the middle of the sampling rod 2. The upper end of the ejector rod 7 is connected and fixed to the collar 8. The sum of the lengths of the ejector rod 7 and the sampling barrel 5 is greater than the length of the drill barrel 3, and the cross section of the ejector rod 7 is an arc-shaped support plate with the same shape as the arc-shaped opening 9.

[0017] After the sampling is completed, push the ring 8 downward, and the ejector rod 7 will eject the ejection plate 6 from the card slot. The outward movement of the ejection plate 6 will push the sampling tube 5. The sampling tube 5 moves slowly outward to guide the sampling tube 5 to be completely ejected, or the sampling tube 5 is partially ejected, and then the sampling tube 5 is pulled out from the outer end. There will be some extended soil at the bottom of the sampling tube 5. After removing this part, it can be placed on the storage plate 11 of the temporary storage box.

[0018] In order to facilitate storage, a plunger 12 that matches the inner diameter of the sampling tube 5 is provided on the storage plate 11. The plunger 12 is fixed on the storage plate 11, and the sampling tube 5 is aligned with the plunger 12 and pressed to fix it. A ring clamp 13 can also be provided on the outside of the plunger 12, and the side wall of the sampling tube 5 is clamped between the plunger 12 and the ring clamp 13; similarly, in order to prevent soil from spilling out, a top cover 14 is also inserted into the top of the sampling tube 5.

[0019] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sampling device for soil fertilizer nutrient detection, characterized in that: include: The top of the sampling tube is provided with an annular groove, and the annular ejection plate is provided in the groove, and the upper end of the sampling tube is inserted into the groove, and the ejection plate is located above the sampling tube. The top of the sampling tube is provided with a plurality of arc openings evenly distributed on the circumference, and the arc openings are connected with the slots, and the lower ends of the plurality of ejector rods pass through the arc openings and are connected and fixed to the ejection plate, and each of the arc openings has one ejector rod passing through. A movable ring is provided in the middle of the sampling rod, and the upper end of the ejector rod is connected and fixed to the ring, and the sum of the lengths of the ejector rod and the sampling tube is greater than the length of the drill tube.

2. The sampling device for soil fertilizer nutrient detection according to claim 1, characterized in that: The driving device is a driving motor, and a handle is provided on each of the two opposite sides of the driving device.

3. The sampling device for soil fertilizer nutrient detection according to claim 1, characterized in that: The bottom end of the drill tube is provided with sharp teeth evenly distributed around the circumference.

4. The sampling device for soil fertilizer nutrient detection according to claim 1, characterized in that: The cross section of the push rod is an arc-shaped support plate with the same shape as the arc-shaped opening.

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