Handheld soil sampling device

Abstract

The utility model belongs to the field of soil collection, and discloses a handheld soil sampling device which comprises a hollow rod, a sampling barrel and a sealing mechanism, the sealing mechanism comprises a sleeve, an annular cutter and a sealing unit, the sleeve is sleeved outside the sampling barrel, the bottom of the sleeve is provided with a sampling hole communicated with the sampling barrel, the annular cutter is installed at the bottom of the sleeve, and the sealing unit is connected with the annular cutter. The sealing unit comprises a plurality of sealing assemblies, each sealing assembly comprises a sealing plate, a driving plate, a limiting rod and an elastic piece, the limiting rod is horizontally installed in the sleeve, the driving plate is slidably installed on the limiting rod in a sleeving mode, the elastic piece is installed on the limiting rod and located on the side, away from the sampling hole, of the driving plate, and the sealing plate is fixed to the side, close to the sampling hole, of the driving plate; the bottom of the end, away from the driving plate, of the sealing plate is provided with a sliding guiding face, and the bottom of the sampling barrel abuts against the top of the sealing plate. Through the sealing effect of the sealing mechanism on the bottom of the sampling barrel, the integrity of an internal soil sample is guaranteed when the sampling barrel leaves the soil layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil sampling, and in particular relates to a handheld soil sampling device. Background Art

[0002] Standardized sample collection is a prerequisite for objectively evaluating soil quality. In order to study the physical and chemical properties, pollution status and composition of the soil, it is necessary to use a sampling device to sample the soil.

[0003] A Chinese patent with publication number CN219870381U discloses a handheld soil sampling device, which connects a hollow rod and a sampling tube by inserting a rectangular plug into a rectangular slot, and then fixes the rectangular plug and the rectangular slot with a screw button to fix the hollow rod and the sampling tube. The device is detachable, and after removing the sampling tube, the handle can be pushed to drive the push-pull rod to drive the push plate to push out the soil inside the sampling tube, so that it is convenient to take out the soil inside the sampling tube. When the sampling tube is inserted into the soil to be sampled, a pedal can be added to facilitate pressing and applying force, thereby facilitating the insertion of the sampling tube into the soil to be sampled.

[0004] However, in actual use, since the bottom of the sampling tube in the above scheme is always in an open state, and the sampling tube will go deep into the soil layer when sampling, the user needs to use a large pulling force to remove the sampling tube. In this process, the sampling tube may be subjected to large vibration and shaking, causing the soil at the bottom of the sampling tube to fall off. That is, the integrity of the samples collected by the sampling device is poor and cannot accurately reflect the various data of the soil. Utility Model Content

[0005] The utility model aims to provide a handheld soil sampling device to solve the problem of poor integrity of collected samples in the prior art mentioned above.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a handheld soil sampling device, comprising

[0007] A hollow rod, a mounting seat is mounted at the bottom of the hollow rod;

[0008] The sampling cylinder is mounted on the bottom of the mounting seat, a material pushing assembly is arranged in the sampling cylinder, and the top of the material pushing assembly passes through the mounting seat and extends into the hollow rod;

[0009] The sealing mechanism comprises a sleeve, an annular knife and a sealing unit. The sleeve is sleeved outside the sampling barrel. A sampling hole connected to the sampling barrel is opened at the bottom of the sleeve. The annular knife is installed at the bottom of the sleeve. The sealing unit comprises a plurality of sealing components that evenly divide the sampling holes. The sealing component comprises a fan-shaped sealing plate, an arc-shaped driving plate, a limit rod and an elastic member. The limit rod is horizontally installed in the sleeve. The driving plate is slidably sleeved on the limit rod. The elastic member is installed on the limit rod and is located on the side of the driving plate away from the sampling hole. The sealing plate is fixed to the side of the driving plate close to the sampling hole, and the sealing plate abuts against the bottom of the inner side of the sleeve. The bottom of the sealing plate away from the driving plate has a guide surface, and the bottom of the sampling barrel abuts against the top of the sealing plate.

[0010] The principle and effect of this technical solution:

[0011] 1. The hollow rod drives the mounting base and the sampling tube to penetrate the soil layer for sampling. Then, when the sampling tube is pulled out after the sampling is completed, the bottom of the sampling tube is sealed by the sealing mechanism, thereby ensuring the integrity of the soil sample in the sampling tube and making the subsequent analysis results more accurate. The setting of the pushing assembly facilitates the removal of the soil sample from the sampling tube.

[0012] 2. Through the setting of the sleeve and the annular knife, the sampling tube can be protected when piercing the soil layer, thereby extending the service life of the sampling tube, and by limiting the position of the sleeve and the sampling tube, the sampling tube and the sleeve are connected as a whole. When sampling, the soil passes through the sampling hole and the sealing mechanism in turn, and then enters the sampling tube. When the sampling tube is pulled out, the bottom of the sampling tube is sealed by the sealing mechanism, thereby preventing the soil sample from falling off.

[0013] 3. By abutting the bottom of the sampling tube with the top of the closing plate, the closing plate can control the opening and closing of the sampling tube. By setting a guide surface at the bottom of the closing plate, when the device penetrates the soil layer for sampling, the soil layer abuts against the guide surface to move the closing plate away from the sampling hole, thereby opening the bottom of the sampling tube. At this time, the closing plate drives the driving plate to compress the elastic part. After the sampling is completed, when the sampling tube is pulled out, the bottom of the closing plate is no longer abutted by the soil layer, and will be reset under the action of the elastic force of the elastic part, so that the closing plate closes the sampling hole and the bottom of the sampling tube. Multiple groups of closing components evenly divide the sampling holes to ensure the sealing effect.

[0014] The utility model is further configured as follows: the elastic member is a spring, the spring is sleeved on the limiting rod, and two ends of the spring are respectively in contact with the sleeve and the driving plate.

[0015] The principle and effect of this technical solution: the spring has strong ductility, which can better give way and reset the drive plate.

[0016] The utility model is further configured as follows: there are four groups of closing components.

[0017] The principle and effect of this technical solution: the setting of the four groups of closing components makes the corresponding arc of each closing plate 90°, so that the driving force transmitted by the guide sliding surface can stably drive the closing plate away from the sampling hole, while also controlling the number of closing plates and reducing the number of closing plates, thereby making the movement between the closing plates more stable and less prone to mutual interference.

[0018] The utility model is further configured as follows: a connecting block is fixed on the top of the sampling tube, the pushing assembly passes through the connecting block, a matching section is provided on the top of the sleeve, the sampling tube is slidably inserted into the matching section, the connecting block is adapted to the matching section, a connecting bolt is inserted on the outer side of the matching section, the end of the connecting bolt extends into the inside of the matching section and is threadedly inserted with the connecting block, and the matching section is installed at the bottom of the mounting seat.

[0019] The principle and effect of the technical solution: through the setting of the matching section, the sleeve can limit the position of the sampling barrel and the connecting block to a certain extent, so that the bottom position of the sampling barrel is guaranteed, so that the closing component can play a better closing role, and the sampling barrel can be positionally restricted by the setting of the connecting bolt, so that the sampling barrel can maintain a stable position relative to the sleeve during use, thereby enabling the device to be used stably, and the sampling barrel can be removed from the sleeve by unscrewing the connecting bolt, thereby facilitating the subsequent removal of soil samples from the sampling barrel.

[0020] The utility model is further configured as follows: a mounting cavity is provided at the bottom of the mounting seat, a clearance groove is vertically opened on the inner wall of the mounting cavity, the mating section is slidably matched with the mounting cavity, the head of the connecting bolt slides in the clearance groove, a fixing bolt is inserted on the outer side of the mounting cavity, the end of the fixing bolt extends into the mounting cavity, and is threadedly inserted with the mating section.

[0021] The principle and effect of the technical solution: by setting the give way groove, the position of the connecting bolt can be limited, thereby limiting the position of the threaded hole vacated in the matching section. By limiting the position of the threaded hole, it is easier to insert the fixing bolt into the threaded hole of the matching section, so that the sleeve and the sampling tube as a whole are easier to be connected with the mounting seat and the hollow rod as a whole, which is convenient for assembly. The sleeve can be disassembled by means of the fixing bolt connection, thereby facilitating the removal of the sampling tube from the sleeve.

[0022] The utility model is further configured as follows: the pushing assembly includes a pushing rod, a pushing block and a driving block, the pushing block is slidably fitted in the sampling tube, the bottom of the pushing rod is fixed to the pushing block, the top of the pushing rod is fixed to the driving block, the driving block is slidably fitted in the hollow rod, the top of the mounting seat has a clearance hole with a diameter not less than that of the driving block, the clearance hole is connected to the interior of the hollow rod and the mounting cavity, and the rod body of the pushing rod passes through the bottom of the hollow rod, the clearance hole, the mounting cavity, the connecting block and the top of the sampling tube in sequence.

[0023] The principle and effect of the technical solution are as follows: through the arrangement of the push rod, the push block and the driving block, when the device is sampling, the soil can drive the push block to move upward, thereby driving the push rod to move upward, and then causing the driving block to move upward in the hollow rod, so that the hollow rod can accommodate and store the push rod, and when the sampling tube is removed after the sampling is completed, the push rod can drive the push block to push the soil sample out by pushing the driving block, and because the directness of the give way hole is greater than or equal to the driving block, the driving block can be taken out from the hollow rod and the mounting seat, thereby realizing the disassembly function and being easy to carry.

[0024] The utility model is further configured as follows: a handle is installed on the upper end of the hollow rod, and a pedal is installed on the side wall of the mounting seat.

[0025] The principle and effect of this technical solution: the setting of the handle makes the device easier to carry, and enables the user to better press down or lift the sampling tube by applying force with the hand. The setting of the pedal enables the user to drive the mounting seat and the sleeve at the bottom to penetrate into the soil layer by stepping on the pedal, thereby completing the sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 for Figure 1 A magnified view of the structure at the middle sleeve;

[0028] Figure 3 for Figure 2 Bottom view of the middle mounting seat;

[0029] Figure 4 for Figure 2 The top view of the structure at the middle matching section;

[0030] Figure 5 for Figure 2 Top view of the structure at the closed component in the middle. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0032] The figure marks in the drawings of the specification include: 101, hollow rod; 102, handle; 103, pedal; 201, mounting seat; 202, mounting cavity; 203, make way groove; 204, fixing bolt; 205, make way hole; 301, sampling tube; 302, push block; 303, push rod; 304, drive block; 305, connecting block; 306, connecting bolt; 401, sleeve; 402, annular knife; 403, sampling hole; 404, matching section; 405, closing plate; 406, drive plate; 407, limit rod; 408, spring.

[0033] Example:

[0034] As attached Figure 1-5 As shown, the utility model discloses a handheld soil sampling device, including a hollow rod 101, a sampling tube 301 and a sealing mechanism.

[0035] Handles 102 are installed on both sides of the upper end of the hollow rod 101 , a mounting seat 201 is installed at the bottom of the hollow rod 101 , and a pedal 103 is installed on the side wall of the mounting seat 201 .

[0036] The top of the sampling tube 301 is fixed with a connecting block 305, and a pusher assembly is arranged in the sampling tube 301. The pusher assembly includes a pusher rod 303, a pusher block 302 and a drive block 304. The pusher block 302 is slidably matched in the sampling tube 301. The bottom of the pusher rod 303 is fixed to the pusher block 302, and the top of the pusher rod 303 is fixed to the drive block 304. The drive block 304 is slidably matched in the hollow rod 101. The top of the mounting seat 201 has a diameter of The clearance hole 205 has the same inner diameter as the hollow rod 101, and the diameter of the clearance hole 205 is larger than the diameter of the push rod 303. The clearance hole 205 is connected to the interior of the hollow rod 101. The bottom of the mounting seat 201 is also provided with a mounting cavity 202. The clearance hole 205 is connected to the mounting cavity 202. The rod body of the push rod 303 slides through the bottom of the hollow rod 101, the clearance hole 205, the mounting cavity 202, the connecting block 305 and the top of the sampling tube 301 in sequence.

[0037] The sealing mechanism includes a sleeve 401, an annular knife 402 and a sealing unit.

[0038] The outer shape of the sleeve 401 is a stepped column, and the top is a matching section 404 with a smaller outer diameter. The inner side of the matching section 404 is slidably inserted into the sampling tube 301, and the inner diameter is adapted to the connecting block 305, and the connecting block 305 and the matching section 404 are connected together by the connecting bolt 306. A clearance groove 203 for the head of the connecting bolt 306 is vertically opened in the installation cavity 202, and the side wall of the mounting seat 201 is connected to the matching section 404 of the sleeve 401 by the fixing bolt 204. A sampling hole 403 connected to the sampling tube 301 is opened at the bottom of the sleeve 401, and the annular knife 402 is installed at the bottom of the sleeve 401. The inner diameter of the sleeve 401 is larger than the outer diameter of the sampling tube 301.

[0039] The closing unit includes four groups of closing components that evenly divide the sampling holes 403. The closing components include a 90° fan-shaped closing plate 405, a 90° arc-shaped driving plate 406, a limiting rod 407 and an elastic member. The limiting rod 407 is horizontally installed in the sleeve 401, and the driving plate 406 is slidably mounted on the limiting rod 407. The elastic member is a spring 408, which is mounted on the limiting rod 407, and its two ends are respectively abutted against the sleeve 401 and the driving plate 406. The closing plate 405 is fixed to a side of the driving plate 406 close to the sampling hole 403, and the closing plate 405 is abutted against the bottom of the inner side of the sleeve 401. The bottom of the closing plate 405 away from the driving plate 406 has a guide surface, and the bottom of the sampling tube 301 is abutted against the top of the closing plate 405.

[0040] The specific implementation process is as follows:

[0041] When the device is in use, the handle 102 is pressed and the pedal 103 is stepped on, so that the annular knife 402 penetrates into the soil layer, thereby driving the sleeve 401 and the sampling tube 301 to penetrate into the soil layer, and by pressing down the soil, the soil strength is increased to generate abutment force, which abuts against the guide sliding surface of the closing plate 405, thereby forcing the closing plate 405 to drive the driving plate 406 to compress the spring 408 to make way for the sampling hole 403 and the sampling tube 301, and then as the sleeve 401 penetrates into the soil layer, the soil sample gradually enters the sampling tube 301. After the sampling is completed, the handle 102 is lifted up a short distance, the sample in the sampling tube 301 is disconnected from the soil outside, and the closing plate 405 is no longer pressed down, that is, the bottom of the closing plate 405 is no longer subjected to the abutment force of the soil, and then the closing plate 405 is driven to close under the action of the rebound force of the spring 408, completing the closure of the sampling tube 301, thereby improving the integrity of the soil sample.

[0042] After the sampling tube 301 is pulled out of the ground by the handle 102, the matching section 404 of the sleeve 401 is separated from the mounting seat 201 by rotating the fixing bolt 204, and then the matching section 404 and the connecting block 305 are separated by rotating the connecting bolt 306, so that the sleeve 401 can be inverted and the sampling tube 301 can be taken out of the sleeve 401. At this time, there is no missing soil sample, and the sampling is completed by pushing the driving block 304 to make the pushing block 302 push the soil sample from the sampling tube 301 into the collecting device.

[0043] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A handheld soil sampling device, characterized in that: include A hollow rod, a mounting seat being installed at the bottom of the hollow rod; A sampling cylinder, the sampling cylinder is mounted on the bottom of the mounting seat, a material pushing assembly is arranged in the sampling cylinder, the top of the material pushing assembly passes through the mounting seat and extends into the hollow rod; The sealing mechanism comprises a sleeve, an annular knife and a sealing unit, wherein the sleeve is sleeved outside the sampling barrel, a sampling hole connected to the sampling barrel is opened at the bottom of the sleeve, the annular knife is installed at the bottom of the sleeve, and the sealing unit comprises a plurality of sealing components that equally divide the sampling holes, the sealing components comprise a fan-shaped sealing plate, an arc-shaped driving plate, a limiting rod and an elastic member, the limiting rod is horizontally installed in the sleeve, the driving plate is slidably sleeved on the limiting rod, the elastic member is installed on the limiting rod and is located on the side of the driving plate away from the sampling hole, the sealing plate is fixed to the side of the driving plate close to the sampling hole, and the sealing plate abuts against the bottom of the inner side of the sleeve, the bottom of the sealing plate away from one end of the driving plate has a guide sliding surface, and the bottom of the sampling barrel abuts against the top of the sealing plate.

2. A handheld soil sampling device as claimed in claim 1, characterized in that: The elastic member is a spring, which is sleeved on the limiting rod, and has two ends respectively abutting against the sleeve and the driving plate.

3. A handheld soil sampling device as claimed in claim 1, characterized in that: There are four groups of closure components.

4. A handheld soil sampling device as claimed in claim 1, characterized in that: A connecting block is fixed on the top of the sampling cylinder, the pushing assembly passes through the connecting block, the top of the sleeve has a matching section, the sampling cylinder is slidably inserted into the matching section, the connecting block is adapted to the matching section, a connecting bolt is inserted on the outer side of the matching section, the end of the connecting bolt extends into the inside of the matching section and is threadedly inserted with the connecting block, and the matching section is installed at the bottom of the mounting seat.

5. A handheld soil sampling device as claimed in claim 4, characterized in that: The bottom of the mounting seat is provided with a mounting cavity, the inner wall of the mounting cavity is vertically provided with a clearance groove, the mating section is slidably matched with the mounting cavity, the head of the connecting bolt slides in the clearance groove, a fixing bolt is inserted on the outer side of the mounting cavity, the end of the fixing bolt extends into the mounting cavity and is threadedly inserted with the mating section.

6. A handheld soil sampling device as claimed in claim 5, characterized in that: The pusher assembly includes a pusher rod, a pusher block and a drive block, the pusher block is slidably fitted in the sampling barrel, the bottom of the pusher rod is fixed to the pusher block, the top of the pusher rod is fixed to the drive block, the drive block is slidably fitted in the hollow rod, the top of the mounting seat has a clearance hole with a diameter not less than that of the drive block, the clearance hole is connected to the interior of the hollow rod and to the mounting cavity, and the rod body of the pusher rod passes through the bottom of the hollow rod, the clearance hole, the mounting cavity, the connecting block and the top of the sampling barrel in sequence.

7. A handheld soil sampling device as claimed in claim 1, characterized in that: A handle is installed on the upper end of the hollow rod, and a pedal is installed on the side wall of the mounting seat.

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