Soil VOCs in-situ detection sampling device

Abstract

The utility model discloses a soil VOCs in-situ detection sampling device which comprises an inserting rod, a mounting groove is formed in the bottom of the outer wall of the circumference of the inserting rod, a sampling assembly is mounted in the mounting groove, the sampling assembly comprises a mounting sleeve fixedly connected with the inner wall of the bottom of the mounting groove, and a second lead screw is rotationally connected with the inner wall of one side of the mounting sleeve; a scraper is arranged outside the second lead screw in a threaded and sleeving mode and attached to the inner wall of the mounting sleeve, a blade of the scraper is completely located in the mounting groove, a second bevel gear is coaxially fixed to the end, close to the interior of the mounting groove, of the second lead screw, a limiting groove is formed in the inner wall of the bottom of the mounting groove, and a collecting box is slidably inserted into the limiting groove. Through the arrangement of the sampling assembly, the equipment has an accurate sampling function, and sampling operation can be only carried out on soil at a specified depth according to actual requirements, so that a subsequent tedious backfilling procedure is omitted, and the use convenience is greatly improved.

Description

An in-situ sampling and detection device for soil VOCs Technical Field

[0001] This utility model relates to the field of soil testing technology, specifically to an in-situ soil VOCs detection and sampling device. Background Technology

[0002] Volatile organic compounds (VOCs) are a common type of pollutant in soil, with a wide range of sources. Industrial production activities, such as chemical, petroleum refining, and pharmaceutical industries, generate large amounts of wastewater, waste gas, and waste residue containing VOCs during production. If not properly treated, these pollutants can enter the soil through seepage and leakage. In agricultural production, the unreasonable use of pesticides and fertilizers can also lead to soil VOC pollution. Some pesticides contain volatile organic components, which volatilize into the air or remain on the soil surface during spraying and use, gradually seeping into the soil over time.

[0003] A search revealed a utility model patent with Chinese patent publication number CN222761908U, which discloses a soil sampling device for environmental engineering. The device includes a base plate and wheels. Four wheels are fixedly connected to the bottom of the base plate at intervals. Mounting frames are fixedly connected to the top left and right sides of the base plate. A handle is fixedly connected between the upper parts of two mounting frames. The device also includes a sampling component, a soil-pushing component, and a detection component. A sampling component for soil sampling is provided between the two mounting frames and the base plate. The utility model uses metal detection and warning to prevent the sampling tube from colliding with metal obstacles, ensuring the sampling tube is safely inserted into the soil. A geared motor drives a lead screw to raise and lower the sampling tube for sampling. After sampling, an electric push rod pushes a circular pusher to quickly expel the soil sample. The overall operation is simple and efficient, improving sampling safety and efficiency, and facilitating quick and accurate soil sample collection by staff.

[0004] The aforementioned device samples the soil by driving a sampling tube. If you want to test the soil at a specific depth, you have to remove all the soil from the surface to the specified depth. Then you have to backfill the unwanted soil to avoid damaging the soil structure. It is inconvenient to use and there is room for improvement. Summary of the Invention

[0005] The purpose of this invention is to provide an in-situ soil VOCs detection and sampling device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil VOCs in-situ detection and sampling device, comprising an insertion rod, wherein an installation groove is provided at the bottom of the outer circumference of the insertion rod, and a sampling component is installed inside the installation groove. The sampling component includes an installation sleeve fixedly connected to the inner wall of the bottom of the installation groove, a second lead screw rotatably connected to the inner wall of one side of the installation sleeve, a scraper threaded on the outer side of the second lead screw, the scraper fitting against the inner wall of the installation sleeve, the scraper blade being completely inside the installation groove, a second bevel gear coaxially fixed to one end of the second lead screw near the inside of the installation groove, a limiting groove is provided at the bottom of the installation groove, and a collection box is slidably inserted into the limiting groove, and a transmission structure is provided inside the insertion rod.

[0007] As a further preferred embodiment of this technical solution, the transmission structure includes a transmission rod rotatably connected inside the insert rod, with one end of the transmission rod passing through the insert rod and extending upward. A bevel gear one is coaxially fixed to the outside of the transmission rod, and the bevel gear one meshes with the bevel gear two.

[0008] This device features precise sampling capabilities, allowing for targeted soil sampling at specific depths based on actual needs. This eliminates the need for cumbersome backfilling procedures, significantly improving ease of use. A knob drives the transmission rod to rotate, causing the external bevel gear one to rotate synchronously. Bevel gear one, through its meshing bevel gear two, drives the lead screw two to rotate. The lead screw two then drives the scraper to slide outwards along the mounting sleeve, inserting its blade into the hole wall. This causes the insertion rod to rotate, scraping the soil off the hole wall, which then falls into the collection box. Finally, removing the device completes the targeted sampling.

[0009] As a further preferred embodiment of this technical solution, a positioning component is installed on the outside of the insertion rod. The positioning component includes a connecting frame coaxially fixed to the top outer wall of the insertion rod. A lead screw is rotatably connected to the top outer wall of the connecting frame. A movable sleeve is threaded onto the outside of the lead screw. Several guide rods are fixedly connected to the top outer wall of the connecting frame. The movable sleeve is slidably sleeved on the outside of the several guide rods. A horizontally positioned pedal is provided at the bottom of the circumferential outer wall of the movable sleeve.

[0010] Step on the pedal and apply downward force. The pedal moves the insert rod into the ground via the moving sleeve. When the pedal touches the ground, the operator continues to adjust the height of the pedal. The drive plate drives the lead screw to rotate, which in turn drives the moving sleeve to move upward along the guide rod until the insert rod is inserted to the appropriate depth. The pedal then serves as the positioning tool, eliminating the need for fine-tuning.

[0011] As a further preferred embodiment of this technical solution, two horizontally arranged extension columns are provided at the top of the outer circumference of the insertion rod, so that the rotation of the insertion rod can generate more force.

[0012] As a further preferred embodiment of this technical solution, the guide rod has vertically set scale lines on its outer circumference, which helps to improve the adjustment accuracy of the pedal.

[0013] As a further preferred embodiment of this technical solution, the bottom outer wall of the insertion rod is provided with a threaded hole, and a cone head is threaded inside the threaded hole. If it is necessary to remove the entire soil strip, the cone head can be rotated off and then replaced with a ring tube.

[0014] As a further preferred embodiment of this technical solution, a vertically arranged baffle is fixedly connected to one side of the outer wall of the mounting sleeve, and one end of the second lead screw is rotatably connected inside the baffle, with the baffle positioned on one side of the collection box. The scraped soil will be intercepted by the baffle, thereby preventing the second lead screw from contacting the soil and affecting its normal transmission.

[0015] This invention provides an in-situ soil VOCs detection and sampling device, which has the following beneficial effects:

[0016] (1) By setting up a sampling component, this utility model has a precise sampling function. It can perform sampling operations only on soil at a specified depth according to actual needs, thereby eliminating the tedious backfilling process and greatly improving the convenience of use. The knob drives the transmission rod to rotate, and the bevel gear 1 outside the transmission rod is driven to rotate synchronously. The bevel gear 1 drives the screw 2 to rotate through the bevel gear 2 meshing with it. The screw 2 can drive the scraper to slide outward along the mounting sleeve. The scraper blade will be inserted into the hole wall, and then the insertion rod will be driven to rotate. The scraper can scrape the soil off the hole wall and then fall into the collection box along the hole wall. Finally, the device can be taken out to complete the fixed-point sampling.

[0017] (2) By setting up a positioning component, the operator steps on the pedal and applies downward force. The pedal drives the insertion rod to insert into the ground through the moving sleeve. When the pedal touches the ground, the operator continues to adjust the height of the pedal. The drive plate drives the lead screw to rotate. The lead screw can drive the moving sleeve to move upward along the guide rod until the insertion rod is inserted to the appropriate depth and then stops. The pedal can achieve the positioning effect without the need for detailed adjustment. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 is a magnified schematic diagram of the sampling component of this utility model;

[0021] Figure 4 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model;

[0022] In the diagram: 1. Insert rod; 2. Mounting slot; 3. Extension column; 4. Positioning assembly; 5. Sampling assembly; 6. Cone; 401. Connecting frame; 402. Lead screw one; 403. Guide rod; 404. Moving sleeve; 405. Pedal; 406. Scale line; 501. Transmission rod; 502. Mounting sleeve; 503. Lead screw two; 504. Scraper; 505. Bevel gear one; 506. Bevel gear two; 507. Collection box; 508. Baffle. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: As shown in Figures 2 and 3, in this embodiment, a soil VOCs in-situ detection and sampling device includes a rod 1. The bottom of the outer circumference of the rod 1 is provided with an installation groove 2. A sampling component 5 is installed inside the installation groove 2. The sampling component 5 includes an installation sleeve 502 fixedly connected to the inner wall of the bottom of the installation groove 2. A second lead screw 503 is rotatably connected to the inner wall of one side of the installation sleeve 502. A scraper 504 is threaded on the outside of the second lead screw 503. The scraper 504 fits against the inner wall of the installation sleeve 502. The blade of the scraper 504 is completely inside the installation groove 2. A second bevel gear 506 is coaxially fixed to one end of the second lead screw 503 near the inside of the installation groove 2. A limit groove is provided on the inner wall of the bottom of the installation groove 2, and a collection box 507 is slidably inserted into the limit groove. A transmission structure is provided inside the rod 1.

[0025] The transmission structure includes a transmission rod 501 rotatably connected inside the insert rod 1, with one end of the transmission rod 501 passing through the insert rod 1 and extending upward. A bevel gear 505 is coaxially fixed outside the transmission rod 501, and the bevel gear 505 meshes with the bevel gear 506.

[0026] The transmission rod 501 is rotated by a knob, and the bevel gear 505 outside the transmission rod 501 is driven to rotate synchronously. The bevel gear 505 drives the lead screw 503 to rotate through the bevel gear 506 meshing with it. The lead screw 503 then drives the scraper 504 to slide outward along the mounting sleeve 502. The blade of the scraper 504 will insert into the hole wall, and then drive the insertion rod 1 to rotate. The scraper 504 can scrape the soil off the hole wall and then fall into the collection box 507 along the hole wall. Finally, the device can be taken out to complete the fixed-point sampling.

[0027] As shown in Figures 2 and 4, a positioning component 4 is installed on the outside of the insertion rod 1. The positioning component 4 includes a connecting frame 401 coaxially fixed to the top outer wall of the insertion rod 1. A lead screw 402 is rotatably connected to the top outer wall of the connecting frame 401. A movable sleeve 404 is threaded onto the outside of the lead screw 402. Several guide rods 403 are fixedly connected to the top outer wall of the connecting frame 401. The movable sleeve 404 is slidably sleeved on the outside of the several guide rods 403. A horizontally set pedal 405 is provided at the bottom of the circumferential outer wall of the movable sleeve 404.

[0028] When the foot is pressed on pedal 405 and downward force is applied, pedal 405 drives the insertion rod 1 to insert into the ground through the movable sleeve 404. When pedal 405 contacts the ground, the operator continues to adjust the height of pedal 405. The drive plate drives the lead screw 402 to rotate, and the lead screw 402 drives the movable sleeve 404 to move upward along the guide rod 403 until the insertion rod 1 is inserted to the appropriate depth and stops. Pedal 405 can then play a positioning role without the need for detailed adjustment.

[0029] As shown in Figures 1 and 2, two horizontally positioned extension columns 3 are provided on the top of the outer circumference of the insertion rod 1. The operator only needs to grasp the extension columns 3 and apply forces in opposite directions to the two, and the insertion rod 1 can start to rotate, making the rotation of the insertion rod 1 more effective.

[0030] As shown in Figure 4, the guide rod 403 has vertically set scale lines 406 on its outer circumference, which helps to improve the adjustment accuracy of the pedal 405 and thus ensures more accurate sampling results.

[0031] As shown in Figure 3, the bottom outer wall of the insertion rod 1 has a threaded hole, and a cone head is threaded inside the threaded hole. If it is necessary to remove the entire soil strip, the cone head 6 can be rotated off and then replaced with a ring tube.

[0032] As shown in Figure 3, a vertically arranged baffle 508 is fixedly connected to one side of the outer wall of the mounting sleeve 502. One end of the screw rod 503 is rotatably connected inside the baffle 508, and the baffle 508 is located on one side of the collection box 507. The scraped soil will be intercepted by the baffle 508, thereby preventing the screw rod 503 from contacting the soil and affecting its normal transmission.

[0033] This utility model provides an in-situ soil VOCs detection and sampling device, the specific working principle of which is as follows:

[0034] When the device is in operation, place the insertion rod 1 at the sampling location, then step on the pedal 405 and apply downward force. The pedal 405 drives the insertion rod 1 to insert into the ground through the movable sleeve 404. When the pedal 405 touches the ground, the operator continues to adjust the height of the pedal 405. The drive plate drives the lead screw 402 to rotate, and the lead screw 402 drives the movable sleeve 404 to move upward along the guide rod 403 until the insertion rod 1 is inserted to the appropriate depth and stops. The pedal 405 can play a positioning role without the need for detailed adjustment. After inserting the rod 1 to the appropriate depth, stop operating the pedal 405 and proceed to the next step. Then, use the knob to drive the transmission rod 501 to rotate. The bevel gear 505 outside the transmission rod 501 is driven to rotate synchronously. The bevel gear 505 drives the lead screw 503 to rotate through the bevel gear 506 meshing with it. The lead screw 503 then drives the scraper 504 to slide outward along the mounting sleeve 502. The blade of the scraper 504 will insert into the hole wall, and then drive the rod 1 to rotate. The scraper 504 can scrape the soil off the hole wall and then fall into the collection box 507 along the hole wall. Finally, remove the device to complete the fixed-point sampling.

[0035] 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 soil VOCs in-situ detection and sampling device, comprising an insertion rod (1), characterized in that: The insertion rod (1) has an installation groove (2) at the bottom of its outer circumference. A sampling component (5) is installed inside the installation groove (2). The sampling component (5) includes an installation sleeve (502) fixedly connected to the inner wall of the bottom of the installation groove (2). A screw rod (503) is rotatably connected to one side of the inner wall of the installation sleeve (502). A scraper (504) is threaded on the outside of the screw rod (503). The scraper (504) fits against the inner wall of the installation sleeve (502). The blade of the scraper (504) is completely inside the installation groove (2). A bevel gear (506) is coaxially fixed to one end of the screw rod (503) near the inside of the installation groove (2). A limit groove is opened on the inner wall of the bottom of the installation groove (2), and a collection box (507) is slidably inserted into the limit groove. A transmission structure is provided inside the insertion rod (1).

2. The soil VOCs in-situ detection and sampling device according to claim 1, characterized in that: The transmission structure includes a transmission rod (501) rotatably connected inside the insert rod (1), and one end of the transmission rod (501) passes through the insert rod (1) and extends upward. A bevel gear one (505) is coaxially fixed outside the transmission rod (501), and the bevel gear one (505) meshes with the bevel gear two (506).

3. The soil VOCs in-situ detection sampling device according to claim 1, characterized in that: The insertion rod (1) is externally equipped with a positioning component (4). The positioning component (4) includes a connecting frame (401) coaxially fixed to the top outer wall of the insertion rod (1). A lead screw (402) is rotatably connected to the top outer wall of the connecting frame (401). A movable sleeve (404) is threaded onto the outside of the lead screw (402). Several guide rods (403) are fixedly connected to the top outer wall of the connecting frame (401). The movable sleeve (404) is slidably sleeved on the outside of the several guide rods (403). A horizontally arranged pedal (405) is provided at the bottom of the circumferential outer wall of the movable sleeve (404).

4. The soil VOCs in-situ detection sampling device according to claim 1, characterized in that: The top of the outer circumference of the insertion rod (1) is provided with two horizontally arranged extension columns (3).

5. The soil VOCs in-situ detection and sampling device according to claim 3, characterized in that: The guide rod (403) has vertically set scale lines (406) on its outer circumference.

6. The soil VOCs in-situ detection sampling device according to claim 1, characterized in that: The bottom outer wall of the insertion rod (1) is provided with a threaded hole, and a cone head is threaded inside the threaded hole.

7. The soil VOCs in-situ detection sampling device according to claim 1, characterized in that: A vertically arranged baffle (508) is fixedly connected to one side of the outer wall of the mounting sleeve (502), and one end of the second screw (503) is rotatably connected inside the baffle (508), and the baffle (508) is located on one side of the collection box (507).

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