1. A sleeve driving closed tooth type range-fixed sampler is characterized by comprising a hollow outer sleeve (6), an inner sleeve component movably arranged in the outer sleeve (6), a support frame, a precession handle (5) and an opening-closing handle (1), the supporting frame is arranged outside the outer sleeve (6) and the inner sleeve component, the outer sleeve (6) is fixedly connected with the supporting frame, the precession handle (5) is fixedly connected with the support frame, the inner sleeve component is movably connected with the support frame, the opening and closing handle (1) is fixedly connected with the inner sleeve component, the bottom of the inner sleeve component is detachably provided with a petal-shaped closed tooth (7), when the closed teeth (7) are positioned in the outer sleeve (6), the closed teeth (7) are in a folded state, when the closing tooth (7) extends out of the outer sleeve (6), the closing tooth (7) is in an open state.

2. A sleeve driven closed tooth type range sampler according to claim 1, wherein the supporting frame comprises an upper beam (301), a lower beam (302) and a plurality of supporting rods (303), the upper beam (301) and the lower beam (302) are arranged at intervals from top to bottom, the supporting rods (303) are arranged between the upper beam (301) and the lower beam (302), an upper opening for the inner sleeve assembly to move through is arranged in the middle of the upper beam (301), and a lower opening for accommodating the outer sleeve (6) is arranged in the middle of the lower beam (302).

3. A casing driven closed tooth type range sampler according to claim 2, wherein the supporting frame further comprises an open-close scale (4) arranged between the upper beam (301) and the lower beam (302), the open-close scale (4) being arranged along the axial direction of the inner casing assembly.

4. A casing tube driven closed tooth type constant range sampler as claimed in claim 2, wherein the end of the precession handle (5) is provided with an external thread, the lower beam (302) is provided with a handle opening for accommodating the precession handle (5), the inner wall of the handle opening is provided with an internal thread adapted to the precession handle (5), and the handle opening is further provided with a positioning bolt for fixing the precession handle (5).

5. A sleeve driven closed tooth type range sampler according to claim 1 wherein the bottom of the outer sleeve (6) is sharpened.

6. A casing tube driven closed tooth type range sampler according to claim 5 characterized in that the main body of the outer casing tube (6) is cylindrical and the bottom is hollow round table; the sharp edge is a sawtooth-shaped sharp edge.

7. A sleeve driven closed tooth range sampler according to claim 1 in which the outer sleeve (6) has a pointer (8) on its outer wall in the axial direction.

8. A casing tube driven closed tooth type range sampler according to claim 1, wherein the outer casing tube (6) is an integral casing tube or a combined splicing type casing tube, when the outer casing tube (6) is the combined splicing type casing tube, the outer casing tube (6) is formed by sequentially combining and splicing a plurality of outer branch tubes, one end of each outer branch tube is provided with an external thread, and the other end of each outer branch tube is provided with an internal thread.

9. A casing drive closed tooth range sampler according to claim 1 wherein the inner casing assembly comprises an inner casing (9) and a screw (2) disposed at the top of the inner casing (9), the screw (2) is in threaded connection with the support frame, and the opening and closing handle (1) is mounted at the top of the screw (2).

10. A casing tube driven closed tooth type range sampler according to claim 9, wherein the inner casing tube (9) is an integral casing tube or a combined splicing casing tube, when the inner casing tube (9) is a combined splicing casing tube, the inner casing tube (9) is formed by sequentially combining and splicing a plurality of inner branch tubes, one end of each inner branch tube is provided with an external thread, and the other end of each inner branch tube is provided with an internal thread.

Background

In order to guarantee the rapid development of economy, China unreasonably utilizes soil for a long time, so that the contradiction between population-resource-environment becomes sharp, and the problem of soil quality is gradually concerned worldwide. The soil resource is a very fragile resource, has important significance on food safety, human health safety and even environmental safety, and in order to realize stable growth of agriculture, safe and reasonable utilization of construction land and continuous development of ecological environment, the important role of the soil in the environment must be known again, and the mutual relation between the soil quality and the environment is emphasized.

In the fields of ecology, soil science, environmental protection and the like, undisturbed soil at different depths is required to be collected for analysis, and information such as physical and chemical parameters, chemical components, fertility effect and the like of the soil is tested and obtained, so that rationalized and scientific guidance and evaluation are provided for soil pollution, soil fertilization, general soil monitoring and background risk assessment. The standardized and normalized sample collection mode is a precondition for ensuring objective evaluation of soil and is also the basis of laboratory analysis data.

Soil sample's collection mainly has two kinds at present mechanical collection and manual collection, and wherein mechanical collection mainly samples through drilling equipment, has that the sampling rate is fast and physical labor advantage such as little, but mechanical equipment is generally great, the price is expensive, and requires highly to the place, is not suitable for the narrow and small region in space. The manual collection has the advantages of portability, strong applicability and the like, and can make up for the defects of mechanical collection. However, most of the existing manual collection samplers are simple, the sampling steps are complicated, the labor intensity is high, the soil samples are greatly damaged, and the original appearance of the soil samples with specific depths is difficult to maintain.

The invention discloses a Chinese patent with application number of 201810290344.9, which discloses a manual type rotary soil sampler, wherein the sampler consists of a drill rod, a rotary handle and a sampling cylinder, the sampling cylinder is manually driven to sample downwards by rotating the rotary handle, and the invention can be primarily used for soil sampling although the structure is simpler. However, the sampler is not followed by a sleeve, and the sample is easy to be polluted. In addition, this sample thief can't accurate control sampling depth and sample volume, and the sample thief bottom can't seal, and it has certain degree of difficulty to go out the appearance. The requirements for soil sampling in the fields of ecology, soil science and environmental protection cannot be completely met.

Patent CN212275282U discloses a soil bores into sampling device fast, which comprises a supporting fram, the outer tube, interior sampling tube and the blade that opens and shuts, the support frame includes brace table and supporting leg, the supporting leg sets up around the brace table, the brace table middle part is equipped with the screw hole, the outer tube is equipped with big-end-up's truncated cone section and cylinder section, the surface of cylinder section is equipped with and cooperates self-tapping screw thread with the screw hole, the horizontal bull stick of top fixedly connected with of outer tube, the truncated cone section sets up in the bottom of cylinder section, the truncated cone section is equipped with vertical cylinder hole, the aperture in vertical cylinder hole is less than the internal diameter of cylinder section, truncated cone section and cylinder section hookup location form the annular platform, it connects on the annular platform to open and shut the blade rotation, interior sampling tube sets up in the cylinder section and rotates with the angle of injecing, interior sampling tube stirs the blade that opens and shuts or opens and shuts when cylinder section internal rotation. This sampling device adopts interior sampling tube to break ground cutting and sample, causes the damage to interior sampling tube easily, and this sample can't carry out accurate quantitative control to sampling depth and sample volume moreover.

Disclosure of Invention

The invention aims to provide a sleeve driving closed tooth type fixed range sampler which can accurately control sampling depth and sample amount, effectively avoid the problem of secondary pollution caused in the sampling process, ensure that volatile components are not lost and has the advantage of field portable use.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a sleeve pipe drive seals tooth-like range determination sampler, the sampler includes hollow outer tube, movably locates interior sleeve pipe subassembly, support frame, precession handle in the outer tube and the handle that opens and shuts, the support frame is located outside outer tube and the interior sleeve pipe subassembly, outer tube and support frame looks rigid coupling, precession handle and support frame looks rigid coupling, interior sleeve pipe subassembly and support frame swing joint, the handle that opens and shuts and interior sleeve pipe subassembly looks rigid coupling, interior sleeve pipe subassembly's bottom can be dismantled and be equipped with the closed tooth that is the lamella type, when sealing the tooth and being located the outer tube, it is the state of foldeing to seal the tooth, when sealing the tooth and stretching out the outer tube outside, it is the state of opening to seal the tooth. The closed teeth are controlled to open and close by the vertical relative motion between the inner sleeve component and the outer sleeve.

The support frame includes entablature, bottom end rail and a plurality of bracing piece, entablature and bottom end rail interval setting one on the other, the bracing piece is located between entablature and the bottom end rail, the middle part of entablature is equipped with the upper shed that supplies interior sleeve pipe subassembly to run through the removal, the middle part of bottom end rail is equipped with the lower shed that holds the outer tube.

The inner wall of the upper opening is provided with an internal thread matched with the inner sleeve component, the end part of the outer sleeve is provided with an external thread, and the lower opening is provided with an internal thread matched with the outer sleeve.

The support frame is still including locating the scale that opens and shuts between entablature and the bottom end rail, the scale that opens and shuts sets up along interior sleeve pipe assembly's axis direction, and the scale that opens and shuts instructs interior sleeve pipe assembly distance that moves down, and then instructs the distance that the closed tooth stretches out from the outer sleeve, when interior sleeve pipe assembly moved down gradually, the sample just passes through the closed tooth gradually and enters into the inner skleeve, and later upward movement is interior sleeve pipe, makes closed tooth closed, alright make the sample deposit in interior sleeve pipe, consequently, move down the sample size that the distance can be used to control the collection through interior sleeve pipe of control, but the scale that opens and shuts auxiliary control sample collection volume.

The end of the precession handle is provided with external threads, the lower cross beam is provided with a handle opening for accommodating the precession handle, the inner wall of the handle opening is provided with internal threads matched with the precession handle, and the handle opening is also provided with a positioning bolt for fixing the precession handle.

The bottom of the outer sleeve is provided with a sharp edge.

The sharp edge is a sawtooth-shaped sharp edge.

The main body part of the outer sleeve is cylindrical, and the bottom of the outer sleeve is in a hollow round table shape.

The outer wall of the outer sleeve is provided with a pointer along the axis direction, the pointer is arranged in a scale form, the depth of downward movement of the outer sleeve is indicated, the sampling depth is determined, and the drilling depth is controlled in an auxiliary mode.

The inner sleeve assembly is in threaded connection with the closed teeth.

The outer tube is integral type sleeve pipe or combination concatenation formula sleeve pipe, and when the outer tube was combination concatenation formula sleeve pipe, the outer tube was formed by a plurality of outer branch pipes combination concatenation in proper order, and the one end of single outer branch pipe is equipped with the external screw thread, and the other end is equipped with the internal thread. When the outer sleeve is a combined splicing type sleeve, the outer branch pipe can be detached or added according to the actual sampling depth requirement and the soil thickness condition, so that the length of the outer sleeve is adjusted.

The inner sleeve component comprises an inner sleeve and a screw rod arranged at the top of the inner sleeve, the screw rod is in threaded connection with the support frame, and the opening and closing handle is arranged at the top of the screw rod. The screw can control the inner sleeve to move along the vertical direction.

The interior sleeve pipe is the integral type sleeve pipe or makes up concatenation formula sleeve pipe, when interior sleeve pipe is for making up concatenation formula sleeve pipe, interior sleeve pipe is formed by a plurality of inner branch pipes combination concatenation in proper order, and the one end of single inner branch pipe is equipped with the external screw thread, and the other end is equipped with the internal thread. When the inner sleeve is a combined splicing sleeve, the inner branch pipe can be detached or added according to the actual sampling depth requirement and the soil thickness condition, so that the length of the inner sleeve is adjusted.

The opening and closing handle comprises a handle and a force arm, the force arm and the screw are vertically arranged, and the force arm is located at the top of the screw and is rigidly connected with the screw.

The outer sleeve is propelled in a self-rotating or direct-pushing mode through the precession handle, the contact surface of the outer sleeve and a sample has a sharp edge, the sampler can be effectively guaranteed to drill into soil with hard texture or other solid samples, after the sampling depth is reached, the inner sleeve is driven through the opening and closing handle, the closed teeth are opened to sample the sample, and the downward moving degree of the inner sleeve can be displayed by the opening and closing scale at the support frame to control the sampling amount.

Compared with the prior art, the invention has the following advantages:

1) this sampler seals the starting of tooth through opening and shutting handle drive interior sleeve pipe, control lamella type, uses the scale that opens and shuts to have a clear management and control to the sample volume.

2) This sampler adopts whole sleeve pipe follow-up sample, can form the sample sampling space of deciding the scope effectively to avoid sample cross contamination and volatile component's loss, reduce the influence of other thick liquids to the sample, guarantee the original appearance of sample.

3) The pointer (the pointer is the scale) arranged on the outer sleeve of the sampler can assist the sampling personnel to determine the sampling depth and obtain the sample with the specific depth.

4) Due to the design of the sharp edge, autorotation or direct-pushing sampling is easier to realize, so that excavation sampling is replaced, the damage to the soil surface is effectively avoided, labor is saved, and the method has more obvious advantages for collecting deep samples.

5) The length of the inner sleeve and the length of the outer sleeve can be increased or decreased by splicing, so that the deep samples are effectively ensured to be taken, and the method has a wider application range.

6) The sampler has the advantages of simple structure, portability, effective control of manufacturing cost, low requirement on sampling conditions compared with mechanical sampling equipment, and applicability to places where mechanical equipment cannot reach.

In conclusion, the sampler has a compact and simple structure, is convenient and easy to carry, can quickly sample soil and other solid samples in different fields and with different properties, ensures that the appearance of the sample is not damaged and the components are not polluted, and meets the requirements of the fields of ecology, soil science and environmental protection on sample collection.

Drawings

FIG. 1 is a schematic structural view of a casing tube driving closed tooth type fixed range sampler in a closed tooth closing state;

fig. 2 is a schematic structural diagram of the casing tube driving closed tooth type range sampler under the open state of the closed teeth.

In the figure: 1-an opening and closing handle; 2-a screw; 301-upper beam; 302-lower beam; 303-support bar; 4-an opening and closing scale; 5-precession handle; 6-outer sleeve, 7-closed tooth; 8-a pointer; 9-inner sleeve.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. In the following embodiments or examples, functional components that are not specifically described are illustrated as conventional component structures in the art to achieve the corresponding functions.

Examples

As shown in fig. 1 and 2, a casing driving closed tooth type range-fixed sampler comprises a hollow outer casing 6, an inner casing assembly movably arranged in the outer casing 6, a support frame, a precession handle 5 and an opening and closing handle 1, wherein the support frame is arranged outside the outer casing 6 and the inner casing assembly, the outer casing 6 is fixedly connected with the support frame, the precession handle 5 is fixedly connected with the support frame, the inner casing assembly comprises a hollow inner casing 9 (the inner diameter of the outer casing is larger than the outer diameter of the inner casing) and a screw 2 (the inner casing 9 is in threaded connection with the screw 2) arranged at the top of the inner casing 9, the outer casing 6, the inner casing 9 and the screw 2 are coaxially arranged, the screw 2 is in threaded connection with the support frame, the opening and closing handle 1 comprises a handle and an arm, the arm is vertically arranged with the screw 2, the arm is arranged at the top of the screw and is rigidly connected with the screw, the bottom of the inner casing 9 is provided with a detachable closed tooth 7 (in a petal shape), when the closing tooth 7 is positioned in the outer sleeve 6, the closing tooth 7 is in a closed state, and when the closing tooth 7 extends out of the outer sleeve 6, the closing tooth 7 is in an open state.

The support frame comprises an upper beam 301, a lower beam 302, a plurality of support rods 303 (the embodiment is provided with a left support rod 303 and a right support rod 303) and an opening and closing scale 4, the upper beam 301 and the lower beam 302 are arranged at intervals one above the other, the middle part of the upper beam 301 is provided with an upper opening for the screw rod 2 to pass through and move, the inner wall of the upper opening is provided with an internal thread matched with the screw rod 2, the middle part of the lower beam 302 is provided with a lower opening for accommodating an outer sleeve 6 (a bolt is also arranged between the outer sleeve 6 and the lower beam 302), the end part of the outer sleeve 6 is provided with an external thread, the lower opening is provided with an internal thread matched with the outer sleeve 6, the support rods 303 are obliquely arranged between the upper beam 301 and the lower beam 302, the opening and closing scale 4 is arranged along the axial direction of the inner sleeve component, the upper beam 301, the lower beam 302, the plurality of support rods 303 and the opening and closing scale 4 are all rigidly connected.

The end of the precession handle 5 is provided with external threads, the lower beam 302 is provided with a handle opening for accommodating the precession handle 5, the inner wall of the handle opening is provided with internal threads matched with the precession handle 5, and the handle opening is also provided with a positioning bolt (omitted in the figure) for fixing the precession handle 5.

The bottom of the outer sleeve 6 is provided with a serrated sharp edge, the main body part of the outer sleeve 6 is cylindrical, the bottom of the outer sleeve 6 is in the shape of a hollow circular truncated cone, and the outer wall of the outer sleeve 6 is provided with a pointer 8 along the axis direction.

The outer sleeve 6 is an integrated sleeve or a combined splicing sleeve, when the outer sleeve 6 is the combined splicing sleeve, the outer sleeve 6 is formed by sequentially combining and splicing a plurality of outer branch pipes, one end of each outer branch pipe is provided with an external thread, and the other end of each outer branch pipe is provided with an internal thread.

Interior sleeve pipe 9 formula sleeve pipe or combination concatenation formula sleeve pipe as an organic whole, when interior sleeve pipe 9 is the combination concatenation formula sleeve pipe, interior sleeve pipe 9 is formed by a plurality of inner branch pipes combination concatenation in proper order, and the one end of single inner branch pipe is equipped with the external screw thread, and the other end is equipped with the internal thread.

The practical use mode of the invention is as follows:

(1) after the components are assembled on site, the sampler is vertically placed at a sampling point.

(2) By rotating or manually applying a vertical downward pressure to the feeding handle 5, the sawtooth-shaped sharp edge at the bottom of the hollow truncated cone shape on the outer sleeve 6 breaks the soil surface, and continuously applies a force, so that the outer sleeve 6 drills downwards, and whether the specified depth is reached is determined by the pointer 8, as shown in fig. 1.

(3) After reaching appointed degree of depth, rotate handle 1 that opens and shuts, drive screw rod 2 rotatory, interior sleeve pipe 9 downstream that links to each other with screw rod 2, seal the control that tooth 7 breaks away from outer tube 6, under the effect of elastic force, seal tooth 7 and open, in soil sample gets into interior sleeve pipe 9, can confirm the distance that inner skleeve 9 moved downwards through scale 4 that opens and shuts in this process to the fixed range sample, as shown in fig. 2.

(4) After the sample is collected, the opening and closing handle 1 is rotated to drive the inner sleeve 9 to move upwards, and the closed teeth 7 are closed to form a sample collecting space.

(5) After the closing is finished, the sampler is put forward, the closing teeth 7 are opened in the same step, and the sample is taken out, namely the sample with a specific depth and a fixed range is obtained.

(6) When the depth to be sampled is not enough to be completed by depending on the outer sleeve and the inner sleeve with fixed lengths, the multi-section branch pipe connection can be performed through the preset threads of the inner sleeve and the outer sleeve, and the collection of the sample with the required depth is completed in the same steps.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.