Soil sampler capable of preventing sample pollution

Abstract

The utility model discloses a soil sampler for preventing sample pollution, which belongs to the technical field of soil sampling and comprises a mounting table, a plurality of support units are arranged on the mounting table, a plurality of guide columns are sleeved on the mounting table, the top ends of the guide columns are slidably connected with a driving ring, a push arm is arranged on the upper surface of the driving ring, and the push arm is slidably connected with the guide columns. The inner circumferential surface of the driving ring is connected with a connecting bush through a connecting arm, the inner circumferential surface of the connecting bush is rotatably connected with a driving handle through a connecting piece I, and the mounting table is sleeved with a sampling module for soil sampling. The extension units can drive the sampling unit and the drilling unit to rotate by rotating a driving ring, the sampling unit is controlled to sample soil by rotating a driving handle, and a plurality of extension sections are quickly connected under the cooperation of a first inserting groove and a first inserting block; a worker can conveniently carry the device to a sampling site and then quickly mount and dismount the device, so that the device is convenient to carry and transport.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling, in particular to a soil sampler capable of preventing sample contamination. Background Art

[0002] Heavy metals are particularly prominent among inorganic pollutants in soil, mainly because heavy metals cannot be decomposed by soil microorganisms and are easily accumulated and converted into more toxic methyl compounds. Some even accumulate in the human body at harmful concentrations through the food chain, seriously endangering human health.

[0003] Heavy metal pollutants in soil primarily include mercury, cadmium, lead, copper, chromium, arsenic, nickel, iron, manganese, and zinc. While arsenic is not considered a heavy metal, it is often discussed as such due to its similar behavior, sources, and hazards. Metals can be divided into two categories based on their needs for plants: those that are not essential for plant growth and development, but pose significant risks to human health, such as cadmium, mercury, and lead. Elements that are essential for normal plant growth and development and have certain physiological functions in the human body, such as copper and zinc, can cause pollution and hinder plant growth and development.

[0004] In the research and extraction of heavy metals in soil, more accurate results can only be obtained by observing multiple samples. Therefore, soil from different depths is usually collected for analysis during extraction. However, due to the differences in depth and area, soil from different areas is easily mixed during collection, resulting in cross-contamination.

[0005] For example, the Chinese utility model patent with the announcement number CN220270851U discloses a soil sampler that can prevent sample contamination, including a rotating tube, a handle, a sampling barrel and knife teeth. The handle is symmetrically fixedly connected to the top of the outer side of the rotating tube, the sampling barrel is fixedly connected to the bottom of the rotating tube, the bottom of the sampling barrel is evenly fixedly connected with knife teeth, the inside of the rotating tube is fixedly connected to an ejection mechanism, a threaded rod is sleeved inside the rotating tube, and the bottom end of the threaded rod is fixedly connected to a push plate.

[0006] The above solution has the following shortcomings in actual use:

[0007] This solution limits the connecting disk by rotating the rotating disk and utilizing the limitation of the limit rod to limit the threaded rod. The rotating disk is screwed to the threaded rod. When the rotating disk rotates, the threaded rod descends, driving the push plate to descend, pushing out the soil sample inside the sampling tube and removing the soil sample of the required soil layer. However, in actual use, when the depth of the soil to be sampled is large, the above structure is not easy to carry, and it is also impossible to achieve separate sampling of deep soil. Utility Model Content

[0008] The purpose of the present utility model is to provide a soil sampler that can prevent sample contamination, so as to solve the problems raised in the above background technology.

[0009] To achieve the above objectives, the present invention provides the following technical solutions:

[0010] The top of the guide column is slidably connected to the driving ring, and the upper surface of the driving ring is provided with a push arm, the inner circumference of the driving ring is connected to the connecting bushing through the connecting arm, and the inner circumference of the connecting bushing is rotatably connected to the driving handle through a connecting piece, and a sampling module for soil sampling is sleeved on the mounting platform, and the sampling module comprises an extension unit, a sampling unit and a drilling unit, and the extension unit comprises a plurality of extension sections, the top of the extension section is provided with a plug-in slot 1, the bottom end of the extension section is provided with a plug-in block 1 corresponding to the plug-in slot 1, and a through hole is provided between the bottom wall of the plug-in slot 1 and the lower surface of the plug-in block 1. The extension unit drives the sampling unit and the drilling unit to rotate by rotating the driving ring, and the driving handle is used to control the sampling unit to sample the soil.

[0011] Preferably, the support unit includes an adjusting sleeve, and the internal thread of the adjusting sleeve is connected to two threaded columns, wherein a connecting block is provided at the end of one of the threaded columns, and the connecting block is rotatably connected to the mounting table through a rotating shaft, and the end of the other threaded column is rotatably connected to a fixed block through a rotating shaft, and a fixing cone is provided at the bottom of the fixed block.

[0012] Preferably, the extension unit also includes a transmission column, which is rotatably connected to the inner wall of the through hole through two connecting parts 2, a plug-in block 2 is provided at the bottom end of the transmission column, and a plug-in slot 2 corresponding to the plug-in block 2 is provided at the top end of the transmission column.

[0013] Preferably, the sampling unit includes a sampling section, a plurality of through grooves are opened on the sampling section, the inner walls of the through grooves are rotatably connected to blocks via a rotating shaft, the inner wall of the sampling section is rotatably connected to a drive shaft via a connecting member, a drive disk is provided at the bottom end of the drive shaft, a plurality of push rods are rotatably connected to the drive disk, the ends of the plurality of push rods are respectively rotatably connected to a plurality of blocks, and a collecting bucket is plugged into the sampling section.

[0014] Preferably, the drilling unit comprises a drilling section, a lower portion of which is provided with a plurality of cutting teeth, and the plurality of cutting teeth are arranged axially on the drilling section.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model connects a plurality of extension sections quickly in cooperation with a plug-in slot and a plug-in block, so that a worker can carry the device to a sampling site for quick installation and disassembly, and is convenient for carrying and transportation. By providing a drilling unit, a worker can more easily send the sampling unit to the depth to be sampled. By providing the sampling unit, the sampling unit can be in a sealed state after the soil sampling is completed, thereby avoiding contamination of the sampled soil, thereby improving the accuracy of the sampled soil detection; by providing a supporting unit, the length of each supporting unit can be adjusted as needed, thereby achieving fixed work on uneven ground, so that the sampling module can be vertically drilled into the ground for soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 It is a partial structural diagram of the utility model;

[0020] Figure 4 This is a structural breakdown diagram of the support unit of the present utility model;

[0021] Figure 5 This is a schematic structural diagram of the sampling module of the present invention;

[0022] Figure 6 This is a structural breakdown diagram of the extension unit of the present invention;

[0023] Figure 7 This is a structural breakdown diagram of the sampling unit of the present utility model;

[0024] Figure 8 This is a structural diagram of the drilling unit of the present invention.

[0025] In the picture:

[0026] 1. Mounting table; 2. Support unit; 3. Guide column; 4. Drive ring; 5. Connecting arm; 6. Connecting bushing; 7. Push arm; 8. Connecting piece 1; 9. Drive handle; 10. Sampling module; 11. Through hole; 101. Extension section; 102. Plug slot 1; 103. Plug block 1; 104. Socket; 105. Through hole; 106. Connecting piece 2; 107. Transmission column; 108. Plug block 2; 109. Plug slot 2; 110. Sampling section; 111. Through slot; 112. Block; 113. Connecting piece 3; 114. Drive shaft; 115. Drive disc; 116. Push rod; 117. Collecting bucket; 118. Drilling section; 119. Cutting tooth; 201. Adjusting sleeve; 202. Threaded column; 203. Connecting block; 204. Fixing block; 205. Fixing cone. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-8 , the utility model provides a technical solution:

[0029] like Figure 1-Figure 3 As shown, a soil sampler for preventing sample contamination includes a mounting platform 1, which has a circular structure. A plurality of support units 2 are arranged on the mounting platform 1. The mounting platform 1 and the plurality of support units 2 are rotatably connected. The support units 2 can adjust their own lengths as needed. A plurality of guide columns 3 are sleeved on the mounting platform 1. The top ends of the plurality of guide columns 3 are slidably connected to a driving ring 4. A push arm 7 is provided on the upper surface of the driving ring 4. The inner circumference of the driving ring 4 is connected to a connecting bushing 6 through a connecting arm 5. The inner circumference of the connecting bushing 6 is rotatably connected to a driving handle 9 through a connecting piece 8. A sampling module 10 for soil sampling is sleeved on the mounting platform 1. The driving handle 9 is rotated to control the sampling unit to sample the soil. A through hole 11 corresponding to the sampling module 10 is opened on the mounting platform 1.

[0030] like Figure 4As shown, the support unit 2 includes an adjusting sleeve 201, and the internal thread of the adjusting sleeve 201 is connected to two threaded columns 202. The surface of the adjusting sleeve 201 is covered with protective rubber. By rotating the adjusting sleeve 201, the two threaded columns 202 are retracted or stretched under the action of the thread, thereby achieving fixation on uneven ground, so that the sampling module 10 can be vertically drilled into the ground for soil sampling. A connecting block 203 is provided at the end of one of the threaded columns 202, and the connecting block 203 is rotatably connected to the mounting platform 1 through a rotating shaft. The end of the other threaded column 202 is rotatably connected to a fixing block 204 through a rotating shaft. A fixing cone 205 is provided at the bottom of the fixing block 204. When fixing the device, the fixing cone 205 is inserted into the soil to improve the fixing effect.

[0031] like Figure 5 As shown, the sampling module 10 includes an extension unit, a sampling unit and a drilling unit. The extension unit drives the sampling unit and the drilling unit to rotate by rotating the drive ring 4. The extension unit can be customized according to the depth of soil sample collection required. The extension unit includes a plurality of extension sections 101. The top of the extension section 101 is provided with a plug-in slot 102, and the bottom end of the extension section 101 is provided with a plug-in block 103 corresponding to the plug-in slot 102. A through hole 105 is provided between the bottom wall of the plug-in slot 102 and the lower surface of the plug-in block 103. When splicing two adjacent extension sections 101, the connection of the two extension sections 101 is completed by inserting the plug-in block 103 on the upper extension section 101 into the plug-in slot 102 on the lower extension section 101, and then making the sockets 104 overlap and inserting the axle pin. The axle pin and the socket 104 can be threaded, and the plug-in block 103 is a hexagonal prism structure.

[0032] Further, such as Figure 6 As shown, the extension unit also includes a plurality of transmission columns 107, which are respectively located in the through holes 105. The transmission columns 107 are rotatably connected to the inner wall of the through hole 105 through two connecting pieces 106. A plug-in block 108 is provided at the bottom end of the transmission column 107, and a plug-in groove 109 corresponding to the plug-in block 108 is provided at the top of the transmission column 107. When the connection work of the two adjacent extension sections 101 is completed, the plug-in block 108 at the bottom end of the upper transmission column 107 is inserted into the plug-in groove 109 at the top of the lower transmission column 107, wherein the plug-in block 108 is a hexagonal prism structure, and the transmission column 107 at the top is plugged into the driving handle 9.

[0033] Further, such as Figure 7As shown, the sampling unit includes a sampling section 110, which is provided with a plurality of through grooves 111. The inner walls of the through grooves 111 are rotatably connected to a block 112 through a rotating shaft. One side of the block 112 has an inclined surface, so that when sampling the soil, it is convenient for the block 112 to dig the soil. The inner wall of the sampling section 110 is rotatably connected to a drive shaft 114 through a connecting piece 113. The bottom end of the drive shaft 114 is provided with a drive disk 115. A plurality of push rods 116 are rotatably connected to the drive disk 115. The ends of the plurality of push rods 116 are rotatably connected to the plurality of blockages 112 respectively. A collecting bucket 117 is plugged into the sampling section 110. When sampling, when the sampling section 110 moves to the depth to be sampled, the working The personnel rotates the driving handle 9, and the driving shaft 114 drives the driving disk 115 to start rotating under the transmission of several transmission columns 107. Under the push of the push rod 116, multiple blockages 112 are opened at the same time, and then the driving handle 9 is pulled up and down to make the sampling module 10 move up and down as a whole. The blockage 112 can dig the soil, and the excavated soil falls into the collection bucket 117 under the guidance of the blockage 112. After the sampling is completed, the driving handle 9 is rotated in the opposite direction to close the blockage 112, so that the sampling section 110 forms a relatively sealed environment, thereby avoiding contamination of the sampled soil, thereby improving the accuracy of the sampled soil detection. The collection bucket 117 is located below the driving disk 115, and the driving shaft 114 is plugged into the driving column 107 at the bottom.

[0034] Further, such as Figure 8 As shown, the drilling unit includes a drilling section 118, and a plurality of cutting teeth 119 are provided at the lower part of the drilling section 118. The plurality of cutting teeth 119 are arranged axially on the drilling section 118. By using the cutting teeth 119, it is convenient for the staff to send the sampling unit to the specified depth.

[0035] The working process of this embodiment is as follows: the staff carries the device to the location where sampling is to be carried out, and then ensures that the sampling module 10 is perpendicular to the ground under the action of the support unit 2, and then splices the sampling module 10, and rotates the drive ring 4 to make the extension unit drive the sampling unit and the drilling unit to rotate, and pushes the sampling unit to the specified depth under the cooperation of pressure and the drilling unit, and then controls the sampling unit to sample the soil by rotating the drive handle 9. After the sampling is completed, pull the sampling module 10 to pull the sampling unit out of the soil, and then extract the collection barrel 117 and save the soil therein.

[0036] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampler for preventing sample contamination, comprising a mounting platform, characterized in that: The cam is provided with a plurality of support units, and the mounting platform is provided with a plurality of guide columns, and the top ends of the plurality of guide columns are slidably connected to a driving ring, and the upper surface of the driving ring is provided with a push arm, and the inner circumference of the driving ring is connected to a connecting bushing through a connecting arm, and the inner circumference of the connecting bushing is rotatably connected to a driving handle through a connecting piece. A sampling module for soil sampling is mounted on the mounting platform, and the sampling module includes an extension unit, a sampling unit and a drilling unit. The extension unit includes a plurality of extension sections, and the top end of the extension section is provided with a plug-in slot 1, and the bottom end of the extension section is provided with a plug-in block 1 corresponding to the plug-in slot 1, and a through hole is provided between the bottom wall of the plug-in slot 1 and the lower surface of the plug-in block 1. The extension unit drives the sampling unit and the drilling unit to rotate by rotating the driving ring, and the driving handle is used to control the sampling unit to sample the soil.

2. The soil sampler for preventing sample contamination according to claim 1, characterized in that: The support unit includes an adjusting sleeve, and the internal thread of the adjusting sleeve is connected to two threaded columns, wherein a connecting block is provided at the end of one of the threaded columns, and the connecting block is rotatably connected to the mounting platform through a rotating shaft, and the end of the other threaded column is rotatably connected to a fixed block through a rotating shaft, and a fixing cone is provided at the bottom of the fixed block.

3. The soil sampler for preventing sample contamination according to claim 1, characterized in that: The extension unit also includes a transmission column, which is rotatably connected to the inner wall of the through hole through two connecting pieces 2. A plug-in block 2 is provided at the bottom end of the transmission column, and a plug-in slot 2 corresponding to the plug-in block 2 is provided at the top end of the transmission column.

4. The soil sampler for preventing sample contamination according to claim 1, characterized in that: The sampling unit includes a sampling section, which is provided with a plurality of through grooves. The inner walls of the through grooves are rotatably connected to blocks via a rotating shaft. The inner wall of the sampling section is rotatably connected to a drive shaft via a connecting member. A drive disk is provided at the bottom end of the drive shaft. A plurality of push rods are rotatably connected to the drive disk. The ends of the plurality of push rods are respectively rotatably connected to a plurality of blocks. A collecting bucket is plugged into the sampling section.

5. The soil sampler for preventing sample contamination according to claim 1, characterized in that: The drilling unit comprises a drilling section, a lower portion of which is provided with a plurality of cutting teeth, and the plurality of cutting teeth are arranged axially on the drilling section.

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