CN116026636B - Quantitative collection sampling device and method for trace elements in farmland soil - Google Patents

Abstract

The invention relates to the technical field of sampling devices, in particular to a quantitative collection sampling device and method for trace elements in farmland soil, wherein a drill bit is fixedly connected to the bottom end of a soil inlet barrel, the soil inlet barrel is arranged in a hollow shape, the soil inlet barrel comprises an upper half section and a lower half section, a sampling window is arranged between the upper half section and the lower half section of the soil inlet barrel, the upper half section and the lower half section of the soil inlet barrel are connected through a connecting rod, the connecting rod is concentrated on one side of the soil inlet barrel, the sampling window can be opened after soil is introduced, a rotary disc is arranged on the inner side of the soil inlet barrel, the rotary disc can move upwards to the sampling window, an elastic metal strip is arranged on the inner side of the rotary disc in a sliding manner, a sliding rail for the elastic metal strip to pass through is arranged on the inner side of the rotary disc, the sliding rail is tangent to the inner side of the rotary disc, an included angle is formed between the sliding rail and the outer side of the rotary disc, the included angle is smaller than 90 degrees, and the soil sampling in the horizontal direction can be realized, and sample errors in vertical distribution of the soil are reduced.

Description

Quantitative collection sampling device and method for trace elements in farmland soil

Technical Field

The invention relates to the technical field of sampling devices, in particular to a farmland soil trace element quantitative collection sampling device and method.

Background

The trace elements in the soil are in a water-soluble state, an exchange state, an oxide binding state (comprising manganese oxide and ferric oxide binding) and a mineral state (comprising primary and secondary mineral binding states), and the trace elements in the soil have the strongest water-soluble and exchange states and only account for about 5% -10% of the trace elements in the soil. Transformation of each morphology in soil is in dynamic equilibrium due to plant uptake and supplements the concentration in the soil solution for normal plant growth.

The trace elements in the farmland are detected, so that the growth vigor of crops can be analyzed in advance, and the crops can be planted more scientifically and effectively.

For farmland of ridging operation, if the ridge is east-west trend, a slope towards the sun and a slope facing away from the sun can appear on the ridge, and for these two places, the difference of temperature can bring great humidity difference, when carrying out quantitative collection, because its density of the great soil of humidity is great relatively, and when quantitative collection, its unit is weight, and the volume can be different when taking a sample, current soil sampling device often all is fixed volume and takes a sample for a fixed value in space, does not accord with above-mentioned requirement, if adopts hollow tube to insert the mode of obtaining column soil in the soil and take a sample.

The different depths have different moisture and organic matters, the difference of the moisture and the organic matters brings about the difference of trace elements, the trace elements have larger change in the vertical direction, and the trace elements can approach to be consistent in the horizontal direction of the soil, so that the horizontally distributed soil with the depth can be obtained to the greatest extent during sampling.

If the hollow tube has a large diameter, the soil cannot be smoothly carried out after the hollow tube is inserted into the soil, and the soil samples obtained by the method for obtaining columnar soil by inserting the hollow tube into the soil are mainly distributed vertically, so that the samples obtained at a fixed depth are less, and more fixed-depth soil samples cannot be obtained.

Therefore, a farmland soil trace element quantitative collection sampling device and a farmland soil trace element quantitative collection sampling method are provided for solving the problems.

Disclosure of Invention

The invention aims to provide a quantitative collection sampling device and method for trace elements in farmland soil, which are used for solving the problems that in the background technology, the density of soil with higher humidity is relatively higher, the unit of the soil is weight during quantitative collection, the volume of the soil is different during quantitative collection, the existing soil sampling device usually samples with fixed quantity, the obtained sample is a fixed value in space, the requirements are not met, the obtained soil sample is vertically distributed, the obtained sample at fixed depth is less, and more fixed-depth soil samples cannot be obtained.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a farmland soil microelement ration collection sampling device, includes an entry section of thick bamboo, the bottom fixedly connected with drill bit of entry section of thick bamboo, entry section of thick bamboo is hollow form setting, entry section of thick bamboo includes first half and second half, open between first half and the second half of entry section of thick bamboo and get the mouth window, connect through the connecting rod between first half and the second half of entry section of thick bamboo, the connecting rod concentrates on one side of entry section of thick bamboo, it can be opened after entering earth to get the mouth window;

the inside of the soil entering barrel is provided with a rotary table, the rotary table can move upwards to the position of the taking window, the inside of the rotary table is provided with an elastic metal strip in a sliding mode, the inside of the rotary table is provided with a sliding rail for the elastic metal strip to pass through, the sliding rail is tangent to the inside of the rotary table, an included angle is formed between the sliding rail and the outside of the rotary table, and the included angle is smaller than 90 degrees;

under the arrangement, the soil sampling in the horizontal direction can be realized, the sample error when the soil is vertically distributed is reduced, when the soil sampling device is used, the soil penetrating cylinder is inserted into the soil to be sampled, the depth of the soil to be inserted is changed according to the depth of the soil to be sampled, and the window of the taking hole is penetrated into the position of the soil to be sampled, wherein the soil penetrating process of the soil penetrating cylinder is realized through the prior art, such as a forced pressing mode;

when sampling, the outer rod is pulled to move upwards to drive the rotary table to move to the window, meanwhile, the inner barrel synchronously moves upwards to open the window, then the limit disc slides upwards out of the clamping groove, the inner rod is rotated anticlockwise, the elastic metal strip is driven by the rotation of the inner rod to move along the inner edge of the rotary table, so that the elastic metal strip is extruded out of the sliding rail, after the elastic metal strip exits the window, the limit disc slides downwards to clamp the clamping groove to prevent the elastic metal strip from rebounding, then the outer rod is rotated, the elastic metal strip rotates along with the rotation of the outer rod to scrape soil near the window, the soil is scraped to enter the inner side of the containing barrel, and collecting and sampling are realized, wherein the movement amplitude of the elastic metal strip is in an arc shape, and after the elastic metal strip moves to the connecting rod, the elastic metal strip needs to rotate in the opposite direction to reset, and then rotates again;

in order to obtain more horizontal samples and accurate amounts of soil, after the first time of elastic metal strip rotation sampling, the above actions can be repeated again, so that the length of the elastic metal strip out of the window is increased to obtain more horizontal soil samples;

under the arrangement, the sliding rail is tangent to the inner side of the turntable, an included angle is formed between the sliding rail and the outer side of the turntable, and the included angle is smaller than 90 degrees, so that the elastic metal strip is inclined to one side, and the scraped soil can move along one side of the elastic metal strip when the turntable rotates, so that the soil is guided, and the effect of facilitating collection is achieved;

the inner side of carousel rotates and is provided with interior pole, the outside fixedly connected with connecting rod of interior pole, the outside and the elastic metal strip fixed connection of connecting rod, the elastic metal strip slides along the inner edge of carousel, be provided with arc portion on the elastic metal strip, the opening part of arc portion is towards the direction of rotation of elastic metal strip, the front end fixedly connected with barb of elastic metal strip.

Under the above-mentioned setting, be provided with arc portion on the elastic metal strip, the stability when the elastic metal strip rotation can be increased to the arc portion of setting, and crooked when preventing the elastic metal strip rotation, wherein, the measuring tape material in the automatic tape measure can be selected to the elastic metal strip material, and the front end fixedly connected with barb of elastic metal strip can be easier will get the soil of mouth window department and scrape down.

As an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the utility model discloses a soil-entering device, including a soil-entering section of thick bamboo, a window department of getting, a window department slides and is provided with the inner tube, be provided with the spring between the top of inner tube and the inboard of soil-entering section of thick bamboo, the inboard of spring is provided with the gag lever post, the bottom of gag lever post and the top fixed connection of inner tube, the inboard setting of gag lever post passes the top outside of inner tube of soil-entering section of thick bamboo, the top fixedly connected with roof, pulls inner tube upward movement through the upward movement of roof, the bottom fixedly connected with clamping lever of inner tube, the lower half section of soil-entering section of thick bamboo can be inlayed to the clamping lever.

Under the arrangement, when the soil inlet barrel is pressed downwards, the opening window is shielded by the inner barrel, the bottom end of the inner barrel is fixedly connected with the clamping rod, the clamping rod can be embedded into the lower half section of the soil inlet barrel, and the arrangement can increase the stability and the integrity between the upper half section and the lower half section of the soil inlet barrel when the soil inlet barrel is pressed downwards, so that the opening window is prevented from being broken;

as an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the inside of the soil entering barrel is provided with an outer rod, the outer rod is fixedly connected with the center of the outer side of the turntable, the outer side of the outer rod is provided with a bulge, and the bulge can drive the top plate to move upwards.

Under the arrangement, the outer rod is fixedly connected with the center of the outer side of the turntable, so that the outer rod can drive the turntable to rotate or move up and down;

as an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the bottom fixedly connected with of outer pole holds a section of thick bamboo, hold a top inboard of section of thick bamboo and be provided with the tilting part.

Under the above arrangement, the inclined part plays a role in guiding, so that the possibility that soil falls between the outer side of the holding cylinder and the inner wall of the soil entering cylinder is reduced.

As an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the inner rod is arranged on the inner side of the outer rod, and the bottom end of the inner rod is rotationally connected with the inner side of the bottom end of the turntable.

As an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the draw-in groove has been seted up to the top inboard of outer pole, the top outside sliding connection of interior pole has a spacing dish, the inboard of draw-in groove can be gone into to the downward card of spacing dish, the cross-section of interior pole and spacing dish all is regular polygon shape setting, can drive interior pole rotation through rotating spacing dish.

Under the arrangement, the clamping groove and the limiting disc can enable the inner rod and the outer rod to form a whole when the inner rod and the outer rod are needed, and the inner rod and the outer rod can be independently operated when the inner rod and the outer rod are not needed;

as an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the utility model discloses a soil barrel, including a soil barrel, a balancing plate, a connecting plate, a hanging piece, a connecting plate and a connecting plate, wherein the upper half section outside fixedly connected with planking of a soil barrel, the top fixedly connected with screw rod of planking, the top of screw rod is connected with the balancing plate through the swivel, the inboard of balancing plate is provided with the spirit level, the both ends of balancing plate are provided with connecting plate and hanging piece respectively, the spout has been seted up to the inboard of connecting plate, the inboard of spout sets up in the outside of outer pole, and the connecting plate can play the supporting role to the outer pole, the one end of connecting plate is rotated and is provided with the telescopic link, the inboard screwed connection of telescopic link and balancing plate.

Under the arrangement, the top end of the screw rod is rotationally connected with the balance plate through the rotary ball and is used for playing a role of balancing weight, the invention can make the samples acquired for many times equal in weight according to weight comparison, thereby playing a role of quantitative sampling, the acquired samples can be stored in the inner side of the holding cylinder, the holding cylinder and the transmission components on the upper side of the holding cylinder, including an outer rod, a limiting disc, a rotary disc and the like, form a lever structure through the balance plate and a hanging piece, and realize quantitative sampling through the balancing weight and the weighing effect of the lever; when the balance weight is carried out, the connecting plate at one side of the balance plate is clamped at the lower side of the top end of the outer rod; the top plate needs to be supported independently through a connecting ring; the connecting ring can change position and direction by rotating;

when soil sampling is carried out, the balance plate and the connecting plate can rotate to one side of the outer rod and are not contacted with the outer rod, and the arranged telescopic rod can enable the position of the connecting plate to be adjustable through rotation, so that the connecting plate and the outer rod can be conveniently separated;

after the connecting plate supports the outer rod, the arranged sliding chute plays a role in distance compensation, so that the connecting plate is prevented from being clamped when the balance plate is inclined;

as an alternative scheme of the farmland soil trace element quantitative collection sampling device, the invention comprises the following steps: the outside spiral connection of screw rod has the go-between, the outside fixedly connected with shelves pole of go-between, the shelves pole can rotate in the downside of roof prevent the inner tube down motion.

The application method of the farmland soil trace element quantitative collection sampling device comprises the following steps of;

step a; the soil barrel is inserted into the soil to be sampled, the depth of the soil to be inserted is changed according to the depth of the sampling, and the window of the taking opening penetrates downwards to the position of the sampling;

step b; the outer rod is pulled to move upwards to drive the rotary table to move to the window, the limiting plate slides upwards out of the clamping groove, the inner rod is rotated anticlockwise, and the elastic metal strip is driven to move along the inner edge of the rotary table by the rotation of the inner rod, so that the elastic metal strip is ejected from the sliding rail;

step c; after the elastic metal strip exits the window, the limiting disc is clamped by the downward sliding clamping groove, the outer rod is rotated, the elastic metal strip rotates, soil near the window is scraped off and enters the inner side of the containing cylinder, and collection and sampling are achieved;

step d; the connecting plate at one side of the balance plate is clamped at the lower side of the top end of the outer rod, and the reference object is hung on the hanging piece at the other side of the balance plate for weight comparison, so that the quantitative acquisition function is realized.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention relates to a farmland soil trace element quantitative collection sampling device, which can realize soil sampling in the horizontal direction and reduce sample errors when soil is vertically distributed.

2. According to the quantitative collection and sampling device for trace elements in farmland soil, the sliding rail is tangent to the inner side of the rotary table, an included angle is formed between the sliding rail and the outer side of the rotary table, and the included angle is smaller than 90 degrees, so that the elastic metal strip is inclined to one side, and the scraped soil can move along one side of the elastic metal strip when the rotary table rotates, so that the effect of guiding the soil is achieved, and the effect of facilitating collection is achieved.

3. This sampling device is gathered to farmland soil microelement ration is provided with arc portion on the elastic metal strip, and the stability when the elastic metal strip rotation can be increased to the arc portion that sets up, prevents that the elastic metal strip from bending when rotating, and wherein, the measuring tape material in the automatic tape measure can be selected to the elastic metal strip material, and the front end fixedly connected with barb of elastic metal strip can be easier will get the soil of mouth window department and scrape down.

4. According to the quantitative collection and sampling device for trace elements in farmland soil, when the soil inlet barrel is pressed down, the opening taking window is shielded by the inner barrel, the bottom end of the inner barrel is fixedly connected with the clamping rod, the clamping rod can be embedded into the lower half section of the soil inlet barrel, and the arrangement can increase the stability and the integrity between the upper half section and the lower half section of the soil inlet barrel when the soil inlet barrel is pressed down, so that the opening taking window is prevented from being broken;

5. the invention relates to a farmland soil trace element quantitative collection sampling device, which is characterized in that the top end of a screw is rotationally connected with a balance plate through a rotary ball to play a role of balance weight, and the invention can make samples obtained for many times be identical in weight according to weight comparison, thereby playing a role of quantitative sampling; when the balance weight is carried out, the connecting plate at one side of the balance plate is clamped at the lower side of the top end of the outer rod; the top plate needs to be supported independently through a connecting ring; the connecting ring can be turned to change position and orientation.

Drawings

FIG. 1 is a schematic view of the appearance structure of the present invention;

FIG. 2 is a schematic cross-sectional mounting structure of the present invention;

FIG. 3 is a schematic view of the internal mounting structure of the turntable of the present invention;

FIG. 4 is a schematic view of the movement structure of the elastic metal strip in the turntable according to the present invention;

FIG. 5 is a schematic diagram of the movement structure of the elastic metal strip in the turntable after being expanded outside the soil entering cylinder;

FIG. 6 is a schematic view of the internal mounting structure of the cartridge of the present invention;

FIG. 7 is a schematic cross-sectional view of an elastic metal strip according to the present invention;

FIG. 8 is a schematic view of the outer structure of the inner cylinder of the present invention;

FIG. 9 is a schematic view of the mounting structure of FIG. 2 at B in accordance with the present invention;

FIG. 10 is a schematic view of the mounting structure of FIG. 1 at A in accordance with the present invention;

fig. 11 is a schematic view of a further mounting structure of the present invention.

In the figure: 1. a soil-entering cylinder; 2. a connecting rod; 3. a window for taking out; 4. a drill bit; 5. an outer plate; 6. a screw; 7. a connecting ring; 8. a limit rod; 9. a top plate; 10. a balance plate; 11. a telescopic rod; 12. a hanging piece; 13. an outer rod; 14. an inner rod; 15. a limiting disc; 16. a containing barrel; 17. a turntable; 18. an elastic metal strip; 18a, an arc-shaped portion; 19. a barb; 20. an inclined portion; 21. a clamping groove; 22. a spring; 23. an inner cylinder; 24. a clamping rod; 25. a connecting rod; 26. a connecting plate; 27. a chute; 28. a level gauge; 29. a slide rail.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-10, the present invention provides a technical solution:

the utility model provides a farmland soil microelement ration collection sampling device, includes a soil entering section of thick bamboo 1, the bottom fixedly connected with drill bit 4 of above-mentioned soil entering section of thick bamboo 1, above-mentioned soil entering section of thick bamboo 1 is hollow form setting, above-mentioned soil entering section of thick bamboo 1 includes first half and second half, take out a window 3 has been seted up between first half and the second half of above-mentioned soil entering section of thick bamboo 1, connect through connecting rod 2 between first half and the second half of above-mentioned soil entering section of thick bamboo 1, above-mentioned connecting rod 2 concentrates on one side of soil entering section of thick bamboo 1, above-mentioned window 3 can open after entering earth;

a turntable 17 is arranged on the inner side of the soil entering barrel 1, the turntable 17 can move upwards to the position of the taking window 3, an elastic metal strip 18 is arranged on the inner side of the turntable 17 in a sliding manner, a sliding rail 29 for the elastic metal strip 18 to pass through is arranged on the inner side of the turntable 17, the sliding rail 29 is tangential to the inner side of the turntable 17, an included angle is formed between the sliding rail 29 and the outer side of the turntable 17, and the included angle is smaller than 90 degrees;

under the arrangement, the invention can realize soil sampling in the horizontal direction, reduce sample errors when the soil is vertically distributed, when in use, the soil inlet barrel 1 is inserted into the soil to be sampled, the depth of the soil to be inserted is changed according to the depth of the sample, and the window 3 is penetrated into the position of the sample, wherein the soil inlet process of the soil inlet barrel 1 is realized by the prior art, such as forced pressing and the like;

when the sampling device is used for sampling, the outer rod 13 is pulled to move upwards, the rotary table 17 is driven to move to the position of the taking window 3, meanwhile, the inner barrel 23 synchronously moves upwards, the taking window 3 is opened, then the limiting disc 15 slides upwards out of the clamping groove 21, the inner rod 14 is rotated anticlockwise, the elastic metal strip 18 is driven by the rotation of the inner rod 14 to move along the inner edge of the rotary table 17, the elastic metal strip 18 is pulled out of the sliding rail 29, after the elastic metal strip 18 is pulled out of the taking window 3, the limiting disc 15 slides downwards to clamp the clamping groove 21, the elastic metal strip 18 is prevented from rebounding, then the outer rod 13 is rotated, the elastic metal strip 18 rotates along with the rotation of the outer rod 13, soil near the taking window 3 is scraped off and enters the inner side of the containing barrel 16, sampling is collected, the movement amplitude of the elastic metal strip 18 is in an arc shape, and after the elastic metal strip 18 moves to the connecting rod 2, the elastic metal strip is required to rotate reversely to reset, and the elastic metal strip is rotated again;

in order to obtain more horizontal samples and to obtain accurate amounts of soil, after the first time of the elastic metal strip 18 rotation sampling, the above-mentioned actions can be repeated again, so that the length of the elastic metal strip 18 emerging out of the access window 3 is increased to obtain more horizontal soil samples;

under the arrangement, the sliding rail 29 is tangent to the inner side of the turntable 17, an included angle is formed between the sliding rail 29 and the outer side of the turntable 17, and the included angle is smaller than 90 degrees, so that the elastic metal strip 18 inclines to one side, and the scraped soil can move along one side of the elastic metal strip 18 when the turntable 17 rotates, so that the soil diversion effect is achieved, and the collection convenience effect is achieved;

the inner side of the turntable 17 is rotatably provided with an inner rod 14, the outer side of the inner rod 14 is fixedly connected with a connecting rod 25, the outer side of the connecting rod 25 is fixedly connected with an elastic metal strip 18, the elastic metal strip 18 slides along the inner edge of the turntable 17, the elastic metal strip 18 is provided with an arc-shaped part 18a, an opening of the arc-shaped part 18a faces the rotation direction of the elastic metal strip 18, and the front end of the elastic metal strip 18 is fixedly connected with a barb 19.

Under the above-mentioned setting, be provided with arc portion 18a on the elastic metal strip 18, the stability when the elastic metal strip 18 rotates can be increased to arc portion 18a that sets up, prevents that the elastic metal strip 18 from crooked when rotating, and wherein, the measuring tape material in the automatic tape measure can be selected to elastic metal strip 18 material, and the front end fixedly connected with barb 19 of elastic metal strip 18 can be easier will get the soil of mouth window 3 department and scrape down.

Specifically, the inner cylinder 23 is slidably disposed at the window 3, a spring 22 is disposed between the top end of the inner cylinder 23 and the inner side of the soil-entering cylinder 1, a stop lever 8 is disposed on the inner side of the spring 22, the bottom end of the stop lever 8 is fixedly connected with the top end of the inner cylinder 23, the stop lever 8 passes through the inner side of the soil-entering cylinder 1 and is disposed on the outer side of the top end of the inner cylinder 23, a top plate 9 is fixedly connected to the top end of the stop lever 8, the inner cylinder 23 is pulled to move upward through upward movement of the top plate 9, a clamping lever 24 is fixedly connected to the bottom end of the inner cylinder 23, and the clamping lever 24 can be embedded into the lower half section of the soil-entering cylinder 1.

Under the arrangement, when the soil inlet barrel 1 is pressed downwards, the opening taking window 3 is shielded by the inner barrel 23, the bottom end of the inner barrel 23 is fixedly connected with the clamping rod 24, the clamping rod 24 can be embedded into the lower half section of the soil inlet barrel 1, and the arrangement can increase the stability and the integrity between the upper half section and the lower half section of the soil inlet barrel 1 when the soil inlet barrel 1 is pressed downwards, so that the opening taking window 3 is prevented from being broken;

specifically, the inner side of the soil-entering barrel 1 is provided with an outer rod 13, the outer rod 13 is fixedly connected with the center of the outer side of the turntable 17, the outer side of the outer rod 13 is provided with a protrusion, and the top plate 9 can be driven to move upwards through the protrusion.

Under the arrangement, the outer rod 13 is fixedly connected with the center of the outer side of the turntable 17, so that the outer rod 13 can drive the turntable 17 to rotate or move up and down;

specifically, the bottom end of the outer rod 13 is fixedly connected with a holding cylinder 16, and an inclined portion 20 is disposed inside the top end of the holding cylinder 16.

In the above arrangement, the inclined portion 20 is provided to act as a guide to reduce the likelihood of soil falling between the outside of the holding cylinder 16 and the inner wall of the soil-entry cylinder 1.

Specifically, the inner rod 14 is disposed inside the outer rod 13, and the bottom end of the inner rod 14 is rotatably connected to the inside of the bottom end of the turntable 17.

Specifically, the inner side of the top end of the outer rod 13 is provided with a clamping groove 21, the outer side of the top end of the inner rod 14 is slidably connected with a limiting disc 15, the limiting disc 15 can be clamped into the inner side of the clamping groove 21 downwards, the sections of the inner rod 14 and the limiting disc 15 are all in a regular polygon shape, and the inner rod 14 can be driven to rotate by rotating the limiting disc 15.

Under the above arrangement, the arrangement of the clamping groove 21 and the limiting disc 15 can enable the inner rod 14 to be integrated with the outer rod 13 when the inner rod 14 and the outer rod 13 can be independently operated when the inner rod is not needed;

example 2

In this embodiment, as a further improvement of embodiment 1, referring to fig. 1-11, an outer plate 5 is fixedly connected to the outer side of the upper half section of the soil-entering barrel 1, a screw 6 is fixedly connected to the top end of the outer plate 5, a balance plate 10 is rotatably connected to the top end of the screw 6 through a ball, a level 28 is provided on the inner side of the balance plate 10, a connecting plate 26 and a hanging member 12 are respectively provided at two ends of the balance plate 10, a chute 27 is provided on the inner side of the connecting plate 26, the inner side of the chute 27 is provided on the outer side of the outer rod 13, the connecting plate 26 can support the outer rod 13, a telescopic rod 11 is rotatably provided at one end of the connecting plate 26, and the telescopic rod 11 is spirally connected with the inner side of the balance plate 10.

Under the arrangement, the top end of the screw rod 6 is rotationally connected with the balance plate 10 through the rotary ball and is used for playing a role of counterweight, and the invention can make samples acquired for multiple times identical in weight according to weight comparison so as to play a role of quantitative sampling;

because the obtained sample can be stored in the inner side of the containing cylinder 16, the containing cylinder 16 and the transmission components on the upper side of the containing cylinder, including the outer rod 13, the limiting disc 15, the rotary disc 17 and the like, can form a lever structure through the balance plate 10 and the hanging piece 12, and quantitative sampling is realized through the weight balancing and weighing actions of the lever; when the balance weight is applied, the connecting plate 26 on one side of the balance plate 10 is clamped on the lower side of the top end of the outer rod 13; the top plate 9 needs to be supported separately by the connecting ring 7; the connection ring 7 can be turned to change position and orientation;

if 200 g of sample is needed, because the total weight of the holding cylinder 16 and the transmission component on the upper side thereof is a constant value, under the condition that the arm lengths of the two ends of the preset balance plate 10 are the same, 200 g of the total weight of the holding cylinder 16 and the transmission component on the upper side thereof can be hung on the hanging piece 12, the sample is obtained by adopting the sample sampling method described in the embodiment 1 and is compared, the balance states of the two sides are observed, and when the two ends are balanced, the needed quantitative sample can be obtained; when soil sampling is carried out, the balance plate 10 and the connecting plate 26 can rotate to one side of the outer rod 13 without contacting with the outer rod 13, and the arranged telescopic rod 11 can enable the position of the connecting plate 26 to be adjustable through rotation, so that the connecting plate 26 is convenient to separate from the outer rod 13;

after the connecting plate 26 supports the outer rod 13, the arranged chute 27 plays a role in distance compensation, so that the connecting plate 26 is blocked when the balance plate 10 is prevented from tilting;

specifically, the outer side of the screw 6 is spirally connected with a connecting ring 7, the outer side of the connecting ring 7 is fixedly connected with a stop lever, and the stop lever can rotate under the top plate 9 to prevent the inner cylinder 23 from moving downwards.

The invention also discloses a using method of the farmland soil trace element quantitative collection sampling device, which comprises the following steps of;

step a; the soil barrel 1 is inserted into the soil to be sampled, the depth of the soil to be inserted is changed according to the depth of the sampling, and the window 3 is penetrated into the sampling position;

step b; the outer rod 13 is pulled to move upwards to drive the rotary table 17 to move to the position of the taking window 3, the limiting disc 15 slides upwards out of the clamping groove 21, the inner rod 14 is rotated anticlockwise, the rotation of the inner rod 14 drives the elastic metal strip 18 to move along the inner edge of the rotary table 17, and the elastic metal strip 18 is ejected from the sliding rail 29;

step c; after the elastic metal strip 18 emerges out of the window 3, the limiting disc 15 is clamped by the downward sliding clamping groove 21, the outer rod 13 is rotated, the elastic metal strip 18 rotates, soil near the window 3 is scraped off and enters the inner side of the containing cylinder 16, and collection and sampling are realized;

step d; the connecting plate 26 at one side of the balance plate 10 is clamped at the lower side of the top end of the outer rod 13, and a reference object is hung on the hanging piece 12 at the other side of the balance plate 10 for weight comparison, so that the quantitative acquisition function is realized.

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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a farmland soil microelement ration collection sampling device, includes an income soil section of thick bamboo (1), its characterized in that: the bottom end of the soil entering barrel (1) is fixedly connected with a drill bit (4), the soil entering barrel (1) is arranged in a hollow shape, the soil entering barrel (1) comprises an upper half section and a lower half section, a taking window (3) is formed between the upper half section and the lower half section of the soil entering barrel (1), the upper half section and the lower half section of the soil entering barrel (1) are connected through a connecting rod (2), the connecting rod (2) is concentrated on one side of the soil entering barrel (1), and the taking window (3) can be opened after soil enters the soil;

the soil inlet device is characterized in that a turntable (17) is arranged on the inner side of the soil inlet barrel (1), the turntable (17) can move upwards to the position of the taking window (3), an elastic metal strip (18) is arranged on the inner side of the turntable (17) in a sliding mode, a sliding rail (29) for the elastic metal strip (18) to pass through is arranged on the inner side of the turntable (17), the sliding rail (29) is tangent to the inner side of the turntable (17), an included angle exists between the sliding rail (29) and the outer side of the turntable (17), and the included angle is smaller than 90 degrees;

the inner side of carousel (17) rotates and is provided with interior pole (14), the outside fixedly connected with connecting rod (25) of interior pole (14), the outside and the elastic metal strip (18) fixed connection of connecting rod (25), elastic metal strip (18) are along the inner edge slip of carousel (17), be provided with arc portion (18 a) on elastic metal strip (18), the rotation direction of opening part orientation elastic metal strip (18) of arc portion (18 a), the front end fixedly connected with barb (19) of elastic metal strip (18).

2. The farmland soil trace element quantitative collection sampling device according to claim 1, characterized in that: the utility model discloses a soil pick-up window, including taking window (3) department, taking window (3) department is provided with inner tube (23), be provided with spring (22) between the top of inner tube (23) and the inboard of going into soil section of thick bamboo (1), the inboard of spring (22) is provided with gag lever post (8), the bottom of gag lever post (8) and the top fixed connection of inner tube (23), the inboard setting of gag lever post (8) is in the top outside of inner tube (23), the top fixedly connected with roof (9) of gag lever post (8), pulls inner tube (23) upward movement through the upward movement of roof (9), the bottom fixedly connected with clamping lever (24) of inner tube (23), lower half section of going into soil section of thick bamboo (1) can be embedded to clamping lever (24).

3. The farmland soil trace element quantitative collection sampling device according to claim 2, characterized in that: the inside of going into soil section of thick bamboo (1) is provided with outer pole (13), the outside center department fixed connection of outer pole (13) and carousel (17), the outside of outer pole (13) is provided with the arch, can drive roof (9) upward movement through this arch.

4. A farmland soil trace element quantitative collection sampling device according to claim 3, characterized in that: the bottom end of the outer rod (13) is fixedly connected with a containing cylinder (16), and an inclined part (20) is arranged on the inner side of the top end of the containing cylinder (16).

5. The farmland soil trace element quantitative collection sampling device according to claim 4, wherein: the inner rod (14) is arranged on the inner side of the outer rod (13), and the bottom end of the inner rod (14) is rotationally connected with the inner side of the bottom end of the turntable (17).

6. The farmland soil trace element quantitative collection sampling device according to claim 5, wherein: clamping grooves (21) are formed in the inner side of the top end of the outer rod (13), limiting plates (15) are slidably connected to the outer side of the top end of the inner rod (14), the limiting plates (15) can be downwards clamped into the inner sides of the clamping grooves (21), the cross sections of the inner rod (14) and the limiting plates (15) are all in regular polygon shapes, and the inner rod (14) can be driven to rotate through rotating the limiting plates (15).

7. The farmland soil trace element quantitative collection sampling device according to claim 6, wherein: the utility model discloses a soil entering section of thick bamboo (1), the top fixedly connected with planking (5) in the upper half outside of going into soil section of thick bamboo (1), the top fixedly connected with screw rod (6) of planking (5), the top of screw rod (6) is connected with balance board (10) through the swivel rotation, the inboard of balance board (10) is provided with spirit level (28), the both ends of balance board (10) are provided with connecting plate (26) and pendant (12) respectively, spout (27) have been seted up to the inboard of connecting plate (26), the inboard of spout (27) sets up in the outside of outer pole (13), and connecting plate (26) can play supporting role to outer pole (13), the one end rotation of connecting plate (26) is provided with telescopic link (11), the inboard screwed connection of telescopic link (11) and balance board (10).

8. The farmland soil trace element quantitative collection sampling device according to claim 7, wherein: the outside spiral of screw rod (6) is connected with go-between (7), the outside fixedly connected with shelves pole of go-between (7), the shelves pole can rotate in the downside of roof (9) prevent inner tube (23) downstream.

9. A method of using the quantitative collection and sampling device for trace elements in farmland soil according to claim 8, characterized in that the method comprises the steps of;

step a; the soil barrel (1) is inserted into the soil to be sampled, the depth of the soil to be inserted is changed according to the depth of the sample, and the window (3) is penetrated into the position of the sample;

step b; the outer rod (13) is pulled to move upwards to drive the rotary table (17) to move to the position of the taking window (3), the limiting disc (15) is slid upwards out of the clamping groove (21), the inner rod (14) is rotated anticlockwise, and the rotation of the inner rod (14) drives the elastic metal strip (18) to move along the inner edge of the rotary table (17), so that the elastic metal strip (18) is ejected from the sliding rail (29);

step c; after the elastic metal strip (18) emerges from the taking window (3), the limiting disc (15) is clamped by the downward sliding clamping groove (21), the outer rod (13) is rotated, the elastic metal strip (18) rotates, soil near the taking window (3) is scraped and enters the inner side of the containing cylinder (16), and collection and sampling are realized;

step d; the connecting plate (26) at one side of the balance plate (10) is clamped at the lower side of the top end of the outer rod (13), and a reference object is hung on the hanging piece (12) at the other side of the balance plate (10) for weight comparison, so that the quantitative acquisition function is realized.

Images