Collecting and detecting device for pesticide residues at different depths of soil

Abstract

The invention provides a device for collecting and detecting drug residues at different depths of soil, the device comprises a sampling mechanism and a detection mechanism, the sampling mechanism comprises a supporting seat, a sampling cylinder and a plug-in soil sampler, the supporting seat is provided with a sampling hole, and the sampling hole is communicated with the sampling cylinder and the plug-in soil sampler. The sampling cylinder is fixedly arranged on the supporting seat along the vertical direction, and an inner cavity of the sampling cylinder is communicated with the sampling hole; the plug-in type soil sampler is arranged in the sampling cylinder, and the shape of the plug-in type soil sampler is matched with the shape of the cross section of an inner cavity of the sampling cylinder; and the detection mechanism is used for sampling and detecting the soil collected in the sampling cylinder. According to the scheme, after the plug-in soil sampler is pulled out of soil, the inner wall of the sampling cylinder can limit the soil, so that the situation that soil samples at different heights are mixed to affect the accuracy of a detection result due to the fact that the soil falls down after being loosened is prevented, and sampling work of soil layers at different depths can be achieved in one-time operation.

Description

Technical Field

[0001] The invention relates to the technical field of soil detection, and in particular to a device for collecting and detecting the amount of pesticide residues at different depths in the soil. Background Art

[0002] During the production of chemical agents, the soil around the chemical plant will be polluted due to the deposition of chemical agent gases. Therefore, relevant research departments need to regularly sample the soil layers at different depths near the chemical plant and conduct relevant measurements to reasonably control the residual amount of chemical agents in the soil.

[0003] The patent with publication number CN108593881B discloses a soil pesticide residue detection device, which uses a hydraulic cylinder to drive the left sampling plate and the right sampling plate to pass through the sampling port and insert into the soil for sampling. When this sampling method is used to sample soil with low viscosity, the upper soil will fall downward due to gravity, resulting in the mixing of soil layers at different depths, so that the device can only sample and detect soil layers at one depth at a time. When soils at different depths need to be tested, multiple samplings are required, and the work efficiency is low. Summary of the invention

[0004] Based on the above-mentioned problems existing in the prior art, the present invention aims to solve the technical problem that when the soil pesticide residue detection device in the prior art samples soil with low viscosity, the upper layer of soil will fall downward due to gravity, resulting in mixing of soil layers at different depths, so that the device can only sample and detect a coating of one depth at a time. When it is necessary to detect soils of different depths, multiple samplings are required, resulting in low working efficiency.

[0005] The present invention provides a device for collecting and detecting the amount of pesticide residues at different depths in soil, which comprises:

[0006] The sampling mechanism comprises a support base, a sampling tube and an insertable soil extractor, wherein the support base is provided with a sampling hole, the sampling tube is fixedly arranged on the support base in a vertical direction, and the inner cavity of the sampling tube is connected with the sampling hole; the insertable soil extractor is arranged in the sampling tube, and the outer shape of the insertable soil extractor matches the cross-sectional shape of the inner cavity of the sampling tube;

[0007] The detection mechanism is used to sample and detect the soil collected in the sampling cylinder.

[0008] According to one embodiment of the present invention, the sampling mechanism further includes:

[0009] An externally threaded sleeve, both ends of which can be fixedly connected to the top of the insertable soil extractor through detachable connection structures;

[0010] The transmission assembly comprises a main transmission member and a secondary transmission member which are transmission-connected to each other, wherein the secondary transmission member is positioned in the vertical direction and sleeved on the outside of the externally threaded sleeve, and an internal thread is formed on the inner wall of the secondary transmission member, and the secondary transmission member is meshed with the externally threaded sleeve through the internal thread;

[0011] A rotating driving member is fixedly arranged on the supporting seat, and the main transmission member is fixedly connected to the output end of the rotating driving member;

[0012] When the first end of the externally threaded sleeve is fixedly connected to the top of the inserted soil picker through the detachable connecting structure, the externally threaded sleeve can drive the inserted soil picker to move downward; when the second end of the externally threaded sleeve is fixedly connected to the top of the inserted soil picker through the detachable connecting structure, the externally threaded sleeve can drive the inserted soil picker to move upward.

[0013] According to an embodiment of the present invention, the detachable connection structure comprises:

[0014] A connecting rod, fixedly arranged on the top of the insertable soil extractor;

[0015] A pin, fixedly disposed on the outer wall of the connecting rod;

[0016] L-shaped slots are provided at both ends of the externally threaded sleeve; the pin can be inserted into the L-shaped slots to achieve quick connection or disassembly of the insertable soil extractor and the externally threaded sleeve.

[0017] According to an embodiment of the present invention, the sampling mechanism further comprises a thrust bearing fixedly disposed on the top end surface of the sampling tube, and the auxiliary transmission member is fixedly disposed on the top end surface of the thrust bearing.

[0018] According to an embodiment of the present invention, the sampling barrel comprises a sampling barrel body and a cover plate, a side wall of the sampling barrel body is provided with a strip-shaped sampling port along its length direction, and the cover plate is detachably covered on the strip-shaped sampling port.

[0019] According to an embodiment of the present invention, the sampling tube further comprises a scale, which is detachably fixed on the outer surface of the sampling tube body and arranged in parallel on one side of the strip-shaped sampling port.

[0020] According to an embodiment of the present invention, the zero scale line of the scale is flush with the bottom end surface of the support base.

[0021] According to one embodiment of the present invention, the support seat includes a support seat body and an insert plate, the bottom end surface of the support seat body is provided with a sink groove at the sampling hole, the side wall of the sink groove is provided with an insert hole, and one end of the insert plate can be inserted into the insert hole to seal the sampling hole.

[0022] According to one embodiment of the present invention, the detection mechanism includes a measuring cup and a water storage and supply system, and the water storage and supply system includes a water tank, a water pump, a valve and a water pipe fixedly arranged on the support base, and the water tank, the water pump, and the valve are connected in sequence through the water pipe.

[0023] According to an embodiment of the present invention, the detection mechanism further includes an electronic scale fixedly disposed on the upper surface of the support base.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a device for collecting and detecting the amount of residual agents in soil at different depths. After the insertable soil sampler is pulled out of the soil, the inner wall of the sampling tube can restrict the soil to prevent the soil from falling downward after being loosened and causing soil samples at different heights to be mixed, thereby affecting the accuracy of the detection results. Sampling of soil layers at different depths can be achieved in one operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of a device for collecting and detecting the amount of pesticide residues at different depths in soil provided by an embodiment of the present invention;

[0028] Figure 2 It is a front view of a device for collecting and detecting the amount of pesticide residues at different depths in soil provided by an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 Schematic diagram of the middle AA section;

[0030] Figure 4 yes Figure 3 The enlarged schematic diagram of the middle part B;

[0031] Figure 5 Schematic diagram of the connection structure between the insertable soil extractor and the external threaded sleeve in an embodiment of the present invention;

[0032] Figure markings: 1-sampling mechanism; 11-support base; 110-sampling hole; 111-support base body; 112-insert plate; 12-sampling tube; 121-sampling tube body; 122-cover plate; 123-scale; 13-insertion type soil sampler; 14-external threaded sleeve; 140-detachable connection structure; 141-connecting rod; 142-pin; 143-L-shaped slot; 15-transmission assembly; 151-main transmission member; 152-auxiliary transmission member; 16-rotating drive member; 17-thrust bearing; 18-ground nail; 2-detection mechanism; 21-measuring cup; 22-water storage and supply system; 221-water tank; 222-water pump; 223-valve; 224-water pipe; 23-electronic scale. DETAILED DESCRIPTION

[0033] The following descriptions of the embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented.

[0034] The present invention provides a device for collecting and detecting the amount of pesticide residues at different depths in soil, the structure of which is as follows: Figure 1-Figure 3 As shown, it includes a sampling mechanism 1 and a detection mechanism 2, wherein the sampling mechanism 1 includes a support base 11, a sampling tube 12 and an insertable soil sampler 13, the support base 11 is provided with a sampling hole 110 (after collecting soil, the sampling hole 110 can also be used as a soil sampling port), the sampling tube 12 is vertically fixedly arranged on the support base 11, and the inner cavity of the sampling tube 12 is connected to the sampling hole 110, and the diameter of the inner cavity of the sampling tube 12 is the same as the diameter of the sampling hole 110; the insertable soil sampler 13 is arranged in the sampling tube 12, and the outer shape of the insertable soil sampler 13 matches the cross-sectional shape of the inner cavity of the sampling tube 12; the detection mechanism 2 is used to sample and detect the soil collected in the sampling tube 12.

[0035] In this solution, when the insertable soil sampler 13 is collecting soil, the support seat 11 can support the sampling tube 12 to be erected in the collection area, and the inner cavity of the sampling tube 12 is connected to the drilled hole. When the insertable soil sampler 13 is pulled out of the drilled hole, the inner wall of the sampling tube 12 can cooperate with the outer shape of the insertable soil sampler 13 to prevent the collected soil from becoming loose and falling downward after escaping from the hole, thereby allowing the collected soil at different depths to remain in a relatively independent state to avoid the soil falling downward and mixing to affect the detection results, thereby achieving the collection of multiple soils at different depths at one time, thereby improving the efficiency of soil collection and detection.

[0036] It should be noted that the soil sampled by the insertable soil sampler 13 should have a certain viscosity and is not suitable for sampling operations of sandy soil.

[0037] Please continue to refer to Figure 1 , further, the sampling mechanism 1 also includes an externally threaded sleeve 14, a transmission assembly 15 and a rotating drive member 16, wherein the two ends of the externally threaded sleeve 14 can be fixedly connected to the top of the inserted soil sampler 13 through a detachable connection structure 140 respectively; the transmission assembly 15 includes a main transmission member 151 and a secondary transmission member 152 that are mutually transmission-connected, the secondary transmission member 152 is positioned in the vertical direction and sleeved to the outside of the externally threaded sleeve 14, and the inner wall of the secondary transmission member 152 is provided with an internal thread, and the secondary transmission member 152 is meshed with the externally threaded sleeve 14 through the internal thread; the rotating drive member 16 is fixedly arranged on the support seat 11, and the main transmission member 151 is fixedly connected to the output end of the rotating drive member 16; specifically, the rotating drive member 16 is a motor;

[0038] When the first end of the externally threaded sleeve 14 is fixedly connected to the top of the inserted soil extractor 13 through the detachable connecting structure 140, the externally threaded sleeve 14 can drive the inserted soil extractor 13 to move downward, so that soil collection work can be carried out; when the second end of the externally threaded sleeve 14 is fixedly connected to the top of the inserted soil extractor 13 through the detachable connecting structure 140, the externally threaded sleeve 14 can drive the inserted soil extractor 13 to move upward, so that the inserted soil extractor 13 can be pulled out of the hole after the soil collection work is completed.

[0039] It is easy to understand that the rise and fall of the inserted soil taker 13 are driven by the externally threaded sleeve 14. Generally, in order to make the inserted soil taker 13 rise to pull it out, it is only necessary to reverse the rotating drive member 16 (the direction of the rotating drive member 16 when the inserted soil taker 13 rises is opposite to the direction of the rotating drive member 16 when the inserted soil taker 13 descends). Therefore, it is required that the rotating drive member 16 use a forward and reverse motor, but the price of the forward and reverse motor is generally higher than that of an ordinary motor; in this scheme, the externally threaded sleeve 14 is connected to the inserted soil taker through the detachable connecting structure 140. When the externally threaded sleeve 14 When the first end is connected to the inserted soil extractor 13 through the detachable connecting structure 140, the rotation of the rotating driving member 16 can cause the external threaded sleeve 14 to drive the inserted soil extractor 13 to descend, so that the inserted soil extractor 13 can collect soil; when the second end of the external threaded sleeve 14 is connected to the inserted soil extractor 13 through the detachable connecting structure 140, the rotating driving member 16 rotating in the same direction can cause the external threaded sleeve 14 to drive the inserted soil extractor 13 to rise, so as to pull the inserted soil extractor 13 out of the soil after soil collection, without requiring the rotating driving member 16 to have different directions, thereby saving costs.

[0040] Preferably, in the embodiment of the present invention, the transmission assembly 15 is a gear transmission assembly, the main transmission member 151 is a driving gear, and the auxiliary transmission member 152 is a driven gear.

[0041] Please refer to Figure 4 and Figure 5 Furthermore, the detachable connection structure 140 includes a connecting rod 141, a pin 142 and an L-shaped slot 143, wherein the connecting rod 141 is fixedly arranged on the top of the inserted soil extractor 13; the pin 142 is fixedly arranged on the outer wall of the connecting rod 141; both ends of the externally threaded sleeve 14 are provided with the L-shaped slot 143; the pin 142 can be inserted into the L-shaped slot 143 to realize the quick connection or disassembly of the inserted soil extractor 13 and the externally threaded sleeve 14.

[0042] Please continue to refer to Figure 3 Furthermore, in order to realize the vertical positioning of the auxiliary transmission member 152 and the vertical rotation thereof, the sampling mechanism 1 also includes a thrust bearing 17 fixedly arranged on the top end surface of the sampling tube 12 , and the auxiliary transmission member 152 is fixedly arranged on the top end surface of the thrust bearing 17 .

[0043] Furthermore, the sampling mechanism 1 further comprises a plurality of ground spikes 18 fixedly arranged at the bottom end of the support base 1. When the support base 11 is placed on the ground, the ground spikes 18 can be inserted into the soil, thereby improving the overall stability of the device.

[0044] Please continue to refer to Figure 1 According to one embodiment of the present invention, the sampling tube 12 includes a sampling tube body 121 and a cover plate 122. The side wall of the sampling tube body 121 is provided with a strip sampling port (not shown in the figure) along its length direction, and the cover plate 122 is detachably covered on the strip sampling port.

[0045] It is easy to understand that after the soil is collected, when the insertable soil sampler 13 rises into the inner cavity of the sampling tube 12, soil samples of different depths can be sampled through the strip sampling port, so that soils of different depths can be tested.

[0046] Furthermore, in order to know the stratum depth of the sampled soil, the sampling tube 12 further includes a scale 123, which is detachably fixed on the outer surface of the sampling tube body 121 and arranged parallel to one side of the strip sampling port. Preferably, the zero scale line of the scale 123 is flush with the bottom end surface of the support seat 11.

[0047] It is easy to understand that when the inserted soil sampler 13 has finished taking soil and is retracted into the sampling tube 12 (the bottom end of the inserted soil sampler 13 is flush with the bottom end surface of the support seat 11), the zero scale line of the scale 123 corresponds to the maximum soil taking depth, and the topmost soil layer in the sampling tube 12 corresponds to the minimum soil taking depth (referring to the surface soil depth). Therefore, when sampling the soil in the sampling tube 12, the scale corresponding to the topmost soil layer in the sampling tube 12 minus the scale of the soil sample to be taken is the soil layer depth of the soil sample in the soil. Specifically, when the soil height in the sampling tube 12 is 1m, the scale corresponding to the soil sample to be taken is 20cm, and the actual soil layer depth of the soil sample to be taken in the soil is 1m-20cm=80cm.

[0048] According to an embodiment of the present invention, in order to prevent the collected soil from falling through the sampling hole 110, the support base 11 includes a support base body 111 and a plug plate 112. Figure 3 As shown, a trough is provided on the bottom end surface of the support seat body 111 at the sampling hole 110, and an insertion hole is provided on the side wall of the trough. One end of the insertion plate 112 can be inserted into the insertion hole to block the sampling hole 110, thereby preventing the collected soil from falling through the sampling hole 110.

[0049] It should be noted that providing the plug-in plate 112 to detachably block the sampling hole 110 in a plug-in manner is only a preferred embodiment of the present scheme. In other embodiments, the sampling hole 110 can also be blocked in other forms, such as by detachably setting a sealing plate at the bottom end of the sampling hole 110 by screws.

[0050] Please continue to refer to Figure 1 According to an embodiment of the present invention, the detection mechanism 2 includes a measuring cup 21 and a water storage and supply system 22. The water storage and supply system 22 includes a water storage tank 221, a water pump 222, a valve 223 and a water pipe 224 fixedly arranged on the support base 11. The water storage tank 221, the water pump 222 and the valve 223 are sequentially connected through the water pipe 224. After the measuring cup 21 is used to sample the collected soil, water can be added to the measuring cup 21 through the water storage and supply system 22 to dilute the soil, so as to facilitate subsequent soil detection work.

[0051] Furthermore, the detection mechanism 2 also includes an electronic scale 23 fixedly arranged on the upper surface of the support base 11 for quantitatively sampling the soil so that the detection accuracy can be controlled.

[0052] In order to facilitate the understanding of this scheme, the following Figure 1-Figure 5 The working principle of the present invention is described in detail:

[0053] Step 1, open the plug plate 112 to expose the sampling hole 110, place the entire device in the soil area to be tested, the support base 11 is supported on the upper surface of the soil, and the ground nails 18 can be driven into the soil under the action of gravity to improve the stability of the device placement.

[0054] Step 2, start the rotating driving member 16, and the rotating driving member 16 drives the main transmission member 151 and the auxiliary transmission member 152 to rotate in turn. Since the internal thread of the auxiliary transmission member 152 is engaged with the external threaded sleeve 14, and the auxiliary transmission member 152 is fixedly arranged on the top surface of the thrust bearing 17, the rotating auxiliary transmission member 152 will drive the external threaded sleeve 14 to descend, so that the insertion type soil collector 13 is inserted into the soil to collect soil.

[0055] Step 3, after the insertion type soil extractor 13 is inserted into the soil to a certain depth, the rotating drive member 16 is paused, the auxiliary transmission member 152 and the external threaded sleeve 14 are removed, and the external threaded sleeve 14 is inverted and connected to the top of the insertion type soil extractor 13 through the detachable connecting structure 140, and the auxiliary transmission member 152 is adjusted to a suitable height position.

[0056] Step 4, start the rotating driving member 16 again to drive the external threaded sleeve 14 to rise through the transmission assembly 15, so that the insertion type soil extractor 13 can be pulled out from the soil.

[0057] Step 5: close the plug plate 112 to block the sampling hole 110.

[0058] Step 6, remove the cover plate 122, use the measuring cup 21 to sample soil samples of the same mass from different heights of the sampling tube 12 (in order to improve the accuracy of the test results, multiple measuring cups 21 can be used to sample soil at different heights at the same time), and record the height value corresponding to each soil sample (i.e., the depth of the soil layer) based on the scale 123.

[0059] Step 7: Add the same mass of pure water into the measuring cup 21 through the water storage and supply system 22 to dilute and stir, so as to carry out subsequent soil detection work; specifically, the soil detection work can be to add medicine into the measuring cup 21 and detect the color change through the test paper, or to use the corresponding sensor to collect the components of the medicine contained in the soil.

[0060] Compared with the prior art, in a device for collecting and detecting the amount of pesticide residues at different depths in the soil provided by the present invention, after the insertable soil sampler 13 is pulled out of the soil, the inner wall of the sampling tube 12 can restrict the soil to prevent the soil from falling downward after loosening and causing the soil samples at different heights to mix, thereby affecting the accuracy of the detection results, thereby enabling the sampling of soil layers at different depths to be achieved in one operation.

[0061] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A device for collecting and detecting the residual amount of pesticides at different depths in the soil, characterized in that: include: A sampling mechanism (1) comprises a support base (11), a sampling tube (12) and an insertable soil sampler (13); the support base (11) is provided with a sampling hole (110); the sampling tube (12) is fixedly arranged on the support base (11) in a vertical direction, and the inner cavity of the sampling tube (12) is connected to the sampling hole (110); the insertable soil sampler (13) is arranged in the sampling tube (12), and the outer shape of the insertable soil sampler (13) matches the cross-sectional shape of the inner cavity of the sampling tube (12); The detection mechanism (2) is used to sample and detect the soil collected in the sampling cylinder (12).

2. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 1 is characterized in that: The sampling mechanism (1) further comprises: An externally threaded sleeve (14), both ends of which can be fixedly connected to the top of the insertable soil extractor (13) via detachable connection structures (140); A transmission assembly (15), comprising a main transmission member (151) and a secondary transmission member (152) which are connected to each other in a transmission manner, wherein the secondary transmission member (152) is positioned in a vertical direction and sleeved on the outside of the externally threaded sleeve (14), and an internal thread is formed on the inner wall of the secondary transmission member (152), and the secondary transmission member (152) is meshed with the externally threaded sleeve (14) through the internal thread; A rotating driving member (16) is fixedly arranged on the supporting seat (11), and the main transmission member (151) is fixedly connected to the output end of the rotating driving member (16); When the first end of the externally threaded sleeve (14) is fixedly connected to the top end of the inserted soil extractor (13) via the detachable connection structure (140), the externally threaded sleeve (14) can drive the inserted soil extractor (13) to move downward while rotating; when the second end of the externally threaded sleeve (14) is fixedly connected to the top end of the inserted soil extractor (13) via the detachable connection structure (140), the externally threaded sleeve (14) can drive the inserted soil extractor (14) to move upward.

3. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 2 is characterized in that: The detachable connection structure (140) comprises: A connecting rod (141) is fixedly arranged on the top of the insertable soil extractor (13); A pin (142) is fixedly disposed on the outer wall of the connecting rod (141); An L-shaped slot (143) is provided at both ends of the externally threaded sleeve (14); the pin (142) can be inserted into the L-shaped slot (143) to achieve quick connection or disassembly of the inserted soil extractor (13) and the externally threaded sleeve (14).

4. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 2 is characterized in that: The sampling mechanism (1) further comprises a thrust bearing (17) fixedly arranged on the top end surface of the sampling tube (12), and the auxiliary transmission member (152) is fixedly arranged on the top end surface of the thrust bearing (17).

5. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 1 is characterized in that: The sampling cylinder (12) comprises a sampling cylinder body (121) and a cover plate (122); a strip-shaped sampling port is provided on the side wall of the sampling cylinder body (121) along its length direction; and the cover plate (122) is detachably covered on the strip-shaped sampling port.

6. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 5, characterized in that: The sampling cylinder (12) further comprises a scale (123), which is detachably fixedly arranged on the outer surface of the sampling cylinder body (121) and arranged in parallel on one side of the strip-shaped sampling port.

7. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 6 is characterized in that: The zero scale line of the scale (123) is flush with the bottom end surface of the support seat (11).

8. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 1 is characterized in that: The support seat (11) comprises a support seat body (111) and an insert plate (112); a bottom end surface of the support seat body (111) is provided with a sink groove at the sampling hole (110); a side wall of the sink groove is provided with an insert hole; one end of the insert plate (112) can be inserted into the insert hole to block the sampling hole (110).

9. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 1, characterized in that: The detection mechanism (2) comprises a measuring cup (21) and a water storage and supply system (22); the water storage and supply system (22) comprises a water storage tank (221), a water pump (222), a valve (223) and a water pipe (224) fixedly arranged on the support seat (11); the water storage tank (221), the water pump (222), and the valve (223) are connected in sequence via the water pipe (224).

10. The device for collecting and detecting the residual amount of pesticides at different depths in soil according to claim 9, characterized in that: The detection mechanism (2) also includes an electronic scale (23) fixedly arranged on the upper surface of the support base (11).

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