CN112284797B - Sampling device is detected to farming soil pH valve - Google Patents
Sampling device is detected to farming soil pH valve Download PDFInfo
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- CN112284797B CN112284797B CN202011204208.7A CN202011204208A CN112284797B CN 112284797 B CN112284797 B CN 112284797B CN 202011204208 A CN202011204208 A CN 202011204208A CN 112284797 B CN112284797 B CN 112284797B
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- 238000005070 sampling Methods 0.000 title claims abstract description 87
- 239000002689 soil Substances 0.000 title claims abstract description 77
- 238000009313 farming Methods 0.000 title description 2
- 238000001514 detection method Methods 0.000 claims description 11
- 230000012010 growth Effects 0.000 abstract description 7
- 239000002585 base Substances 0.000 description 20
- 238000012856 packing Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- 238000005527 soil sampling Methods 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000003553 Leptospermum scoparium Species 0.000 description 1
- 235000015459 Lycium barbarum Nutrition 0.000 description 1
- 240000004658 Medicago sativa Species 0.000 description 1
- 235000017587 Medicago sativa ssp. sativa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000021232 nutrient availability Nutrition 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a device for detecting and sampling the pH value of agricultural planting soil, which comprises a base, wherein a plurality of first fixing cones are fixedly connected to the lower side wall of the base, a plurality of first openings are formed in the base, a plurality of second openings are formed in the base, a lead screw is rotatably connected to the upper side wall of the base, a screw sleeve is arranged on the lead screw, a rotary table is fixedly connected to one end, far away from the base, of the lead screw, a plurality of bearing plates are fixedly connected to the side wall of the screw sleeve, and a plurality of second fixing cones are fixedly connected to the side wall, close to the base, of each bearing plate. The soil sampler has the advantages that the soil of different lands can be sampled by the same device through the plurality of sampling devices without causing the problem that the collected soil samples are impure, the collected soil samples are close to the roots of crops, the soil data detected by the hidden thorns are more suitable for the growth condition of the crops, and the workers can master more accurate crop growth data.
Description
Technical Field
The invention relates to the technical field of soil detection, in particular to a device for detecting and sampling the pH value of agricultural planting soil.
Background
Soil acidity (soil acidity) includes both acid strength and acidity amount, or active acidity and latent acidity. The acid strength means the concentration of H in the soil solution in equilibrium with the solid phase of the soil expressed as pH. The acidity amount refers to the total amount of acid and the buffering performance, and represents the total amount of exchangeable hydrogen and aluminum contained in the soil. Generally expressed in terms of the amount of exchangeable acid. The pH value of soil has great influence on soil fertility and plant growth, and the pH value of soil in northwest and north of China is large, and the pH value of red soil in south China is small. Therefore, crops and plants which are suitable for the pH value of the soil can be planted. For example, in red soil areas, acid-loving tea trees can be planted, and the alkali resistance of alfalfa is strong. The influence of the pH value of the soil on the nutrient availability is also great, such as the phosphorus availability in neutral soil; trace elements (manganese, copper, zinc, etc.) in alkaline soil are poor in effectiveness. Therefore, for the planting industry or agriculture, the pH value of soil must be paid attention to, measures are actively taken to adjust, and in the activity of the agricultural planting field, the pH value degree of the soil often influences the normal growth condition of crops, so that before the crops are planted, the soil sampling detection is usually carried out on the planting field, the pH value of the soil is conveniently known, and a sampling device is usually required to be used for collecting soil samples.
Present soil sampling device uses when carrying out soil sampling to different lands all is same set of device, it remains to have soil in the device after sampling like this, lead to multiple soil to mix together, the soil pH value data that obtains after detecting is inaccurate, consequently wrong judgement the growth condition of crops leads to crops output to reduce, and the sampling device who has now in the soil collection process often only gathers surface soil sample, less to darker soil sampling volume, and crops grow mainly depends on the soil of root, consequently only gather the soil on surface and be not good to pH value detection effect, can not obtain the soil data of the crops of laminating more.
Therefore, the agricultural planting soil pH value detection sampling device is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems that soil is easy to remain in a sampling device and the sampling device is not easy to collect deeper soil in the prior art, and provides a soil acidity and alkalinity detection and sampling device for agricultural planting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sampling device for detecting the pH value of agricultural planting soil comprises a base, wherein a plurality of first fixing cones are fixedly connected to the lower side wall of the base, a plurality of first openings are formed in the base, a plurality of second openings are formed in the base, a lead screw is rotatably connected to the upper side wall of the base, a screw sleeve is arranged on the lead screw, a rotary disc is fixedly connected to one end, away from the base, of the lead screw, a plurality of bearing plates are fixedly connected to the side wall, close to the base, of each bearing plate, a plurality of second fixing cones are fixedly connected to the side wall, close to the base, of each bearing plate, the second fixing cones penetrate through the plurality of first openings, the bearing plates are slidably connected with a plurality of first threaded rods, a plurality of first threaded rods penetrate through the bearing plates, a sampling device is arranged at one end, close to the base, of each first threaded rod is rotatably connected with a second threaded rod through threads, and the second threaded rods respectively extend into the sampling devices, the one end that the base was kept away from to the lead screw is through bearing fixedly connected with fixed plate, and is a plurality of first threaded rod runs through the fixed plate, and is a plurality of first threaded rod is connected with a plurality of connecting rods through the screw thread rotation, every the one end that first threaded rod was kept away from to the connecting rod is equipped with connecting device.
Preferably, every sampling device is equipped with the sampling tube, every the one end that the sampling tube is close to first threaded rod is equipped with the screw cap, every the screw cap is connected with first threaded rod joint.
Preferably, it is a plurality of the second threaded rod runs through inside a plurality of screw caps stretch into a plurality of sampling barrels, every the second threaded rod stretches into the inside part fixedly connected with auger of sampling barrel, and is a plurality of the size of auger matches with the size of a plurality of sampling barrels.
Preferably, every one end that first threaded rod was kept away from to the sampling tube is connected with a plurality of conical covers through torsion spring rotation, and a plurality of conical covers on the same sampling tube offset, and is a plurality of sampling device runs through a plurality of second openings respectively.
Preferably, a plurality of threaded holes are formed in the side walls, close to the connecting device, of the bearing plate and the fixing plate, and each threaded hole is rotatably connected with a threaded strip.
Preferably, one end of each connecting rod, which is close to the connecting device, is provided with an inner groove, each inner groove is provided with a strip-shaped opening, and a plurality of the thread strips penetrate through the inner grooves.
Preferably, each side wall of the thread strip is fixedly connected with a first bevel gear, each second bevel gear is rotatably connected with a second bevel gear, each first bevel gear and each side wall of the second bevel gear are rotatably connected with a rotating bearing, and a plurality of rotating bearings of the same inner groove are fixedly connected through a support rod.
Preferably, each second bevel gear is fixedly connected with a rotating rod, each rotating rod penetrates through the strip-shaped opening, and one end, far away from the second bevel gear, of each rotating rod is fixedly connected with a handle.
Compared with the prior art, the invention has the beneficial effects that:
1. different sampling devices can be used for sampling different soils by arranging the plurality of sampling devices, so that the inaccurate test data result of the soil caused by soil residue in the sampling devices is prevented, the same sampling device can be used for sampling different soils, the use is convenient, and the sampling result is pure;
2. the sampling cylinder can be stretched into the ground through the structures such as the first threaded rod, the conical cover and the like, and underground soil can be sampled through the auger, so that the sampling device can sample the soil close to the roots of crops, the obtained soil data is more suitable for the growth condition of the crops, and people can implement a more effective method for processing the crops;
3. can adjust different sampling device through connecting device and stretch into the underground sample, consequently when a sampling device moves down, other sampling device can not move down and stretch into the underground, reduce the work load of sample, the auger can be guaranteed with the size phase-match of sampler barrel that the auger once can get more soil samples, reduce work load, improve work efficiency, can guide the bull stick through the slide bar and slide in the inside of the inside groove, the bull stick takes place the dislocation when preventing to rotate the handle, thereby make things convenient for people to rotate the bull stick.
Drawings
FIG. 1 is a schematic structural view of a sampling device for detecting pH of agricultural planting soil according to the present invention;
fig. 2 is a schematic structural diagram at a in fig. 1.
FIG. 3 is a schematic view of a top view of a sampling device for detecting pH of agricultural planting soil according to the present invention;
FIG. 4 is a schematic view of the bottom view of a sampling device for detecting pH of agricultural planting soil according to the present invention;
fig. 5 is a schematic structural diagram of a sampling cylinder and a second threaded rod of the agricultural planting soil acidity and alkalinity detection sampling device provided by the invention.
In the figure: the device comprises a base 1, a first fixed cone 2, a lead screw 3, a lead screw sleeve 4, a bearing plate 5, a second fixed cone 6, a first threaded rod 7, a second threaded rod 8, a rotary table 9, a fixing plate 10, a connecting rod 11, a threaded strip 12, a first bevel gear 13, a second bevel gear 14, a rotating bearing 15, a supporting rod 16, a rotating rod 17, a handle 18, a threaded cover 19, a sampling cylinder 20, a packing auger 21, a conical cover 22 and a torsion spring 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an agricultural planting soil pH value detection sampling device comprises a base 1, a plurality of first fixing cones 2 fixedly connected to the lower side wall of the base 1, a plurality of first openings formed in the base 1, a plurality of second openings formed in the base 1, a lead screw 3 rotatably connected to the upper side wall of the base 1, a screw sleeve 4 arranged on the lead screw 3, a rotary disc 9 fixedly connected to one end of the lead screw 3 away from the base 1, a plurality of bearing plates 5 fixedly connected to the side wall of the screw sleeve 4, a plurality of second fixing cones 6 fixedly connected to the side wall of the bearing plate 5 close to the base 1, a plurality of second fixing cones 6 penetrating through the plurality of first openings, a plurality of first threaded rods 7 slidably connected to the bearing plates 5, a plurality of first threaded rods 7 penetrating through the bearing plates 5, a sampling device arranged at one end of each first threaded rod close to the base 1, and a second threaded rod 8 rotatably connected to the inside each first threaded rod 7, the plurality of second threaded rods 8 respectively extend into the plurality of sampling devices, each sampling device is provided with a sampling cylinder 20, one end, close to the first threaded rod 7, of each sampling cylinder 20 is provided with a threaded cover 19, each threaded cover 19 is connected with the first threaded rod 7 in a clamping mode, the plurality of second threaded rods 8 penetrate through the plurality of threaded covers 19 and extend into the plurality of sampling cylinders 20, the part, extending into the sampling cylinder 20, of each second threaded rod 8 is fixedly connected with an auger 21, and the sizes of the plurality of augers 21 are matched with the sizes of the plurality of sampling cylinders 20, so that the auger 21 can be guaranteed to take more soil samples at one time, the workload is reduced, and the working efficiency is improved;
one end of each sampling cylinder 20, which is far away from the first threaded rod 7, is rotatably connected with a plurality of conical covers 22 through a torsion spring 23, the conical covers 22 on the same sampling cylinder 20 are abutted, a plurality of sampling devices respectively penetrate through a plurality of second openings, the sampling cylinder 20 can extend into the ground through structures such as the first threaded rod 7 and the conical covers 22, underground soil can be sampled through an auger 21, therefore, the sampling devices can sample soil close to the roots of crops, the obtained soil data is more suitable for the growth condition of the crops, and people can implement a more effective crop processing method, one end of the lead screw 3, which is far away from the base 1, is fixedly connected with a fixing plate 10 through a bearing, the first threaded rods 7 penetrate through the fixing plate 10, the first threaded rods 7 are rotatably connected with a plurality of connecting rods 11 through threads, and one end of each connecting rod 11, which is far away from the first threaded rod 7, is provided with a connecting device, the side walls of the bearing plate 5 and the fixing plate 10 close to the connecting device are provided with a plurality of threaded holes, each threaded hole is rotatably connected with a threaded strip 12, one end of each connecting rod 11 close to the connecting device is provided with an inner groove, and each inner groove is provided with a strip-shaped opening;
the plurality of screw strips 12 penetrate through the inner groove, the side wall of each screw strip 12 is fixedly connected with a first bevel gear 13, each second bevel gear 14 is rotatably connected with a second bevel gear 14, the side wall of each first bevel gear 13 and each second bevel gear 14 is rotatably connected with a rotating bearing 15, the plurality of rotating bearings 15 of the same inner groove are fixedly connected through a support rod 16, each second bevel gear 14 is fixedly connected with a rotating rod 17, each rotating rod 17 penetrates through the strip-shaped opening, one end of each rotating rod 17, far away from the second bevel gear 14, is fixedly connected with a handle 18, the rotating rod 17 can slide on the sliding rod, so that the rotating rod 17 cannot be dislocated when the handle 18 is rotated by people, the use of people is facilitated, different sampling devices can be adjusted to extend into the underground for sampling through a connecting device, therefore, when one sampling device moves downwards, other sampling devices cannot move downwards to the underground, and the sampling workload is reduced, prevent other sampling device from being infected with the soil at this place to guarantee the purity of soil.
When the sampling device is used, the whole sampling device is placed on soil to be sampled, the whole sampling device can be preliminarily fixed through a plurality of first fixing cones 2, one handle 18 is rotated, the handle 18 drives a rotating rod 17 to rotate, the rotating rod 17 drives a second bevel gear 14 to rotate, the second bevel gear 14 drives a first gear to rotate, the first gear drives a threaded strip 12 to rotate, the threaded strip 12 gradually extends into a threaded cylinder of a bearing plate 5 from a threaded hole of a fixing plate 10 when rotating, at the moment, a connecting rod 11 is fixed with the bearing plate 5 through the threaded strip 12, a rotating disc 9 is rotated, the rotating disc 9 drives a screw rod 3 to rotate, a plurality of screw sleeves 4 move along the screw rod 3 when the screw rod 3 rotates, the bearing plate 5 drives the connecting rod 11 to move, the bearing plate 5 is controlled to move downwards, when the bearing plate 5 gradually moves downwards, a plurality of second fixing cones 6 penetrate through a plurality of first openings and are pricked into the soil, the whole sampling device is further fixed, the connecting rod 11 fixed with the bearing plate 5 is driven to move downwards when the bearing plate 5 moves downwards, and the plurality of sampling devices are driven to penetrate through the second openings and extend into the soil when the connecting rod 11 moves downwards;
at the moment, the first threaded rod 7 can be rotated, the first threaded rod 7 moves downwards along the connecting rod 11 when rotating, so as to control the depth of the sampling device extending into the ground, after the position of the sampling device is adjusted, the second threaded rod 8 is rotated, the second threaded rod 8 moves downwards along the first threaded rod 7 when rotating, meanwhile, the second threaded rod 8 drives the packing auger 21 to rotate, therefore, the packing auger 21 moves downwards while rotating, when the packing auger 21 supports against a plurality of conical covers 22, the packing auger 21 can support the plurality of conical covers 22 through the action of the torsion spring 23, so that the packing auger 21 extends into the ground to start collecting soil, the second threaded rod 8 is fixed after the collection is finished, the first threaded rod 7 moves downwards along the second threaded rod 8 until the packing auger 21 returns to the inside of the sampling cylinder 20 again, the second threaded rod 8 is loosened, the first threaded rod 7 is rotated reversely, so as to reset the sampling cylinder 20, at the moment, the conical covers 22 are reset through the torsion springs 23 so as to cover the sampling cylinder 20, the screw rods 3 are reversely rotated to reset the bearing plates 5, the rotating rods 17 are reversely rotated to enable the connecting rods 11 and the fixing plates 10 to be clamped through the thread strips 12, when soil at another position needs to be collected, the rotating rods 17 at the other position can be rotated to enable the connecting rods 11 and the bearing plates 5 to be clamped through the thread strips 12, and the steps are repeated to collect the soil;
soil that whole collection process was collected is very pure, there is not other soil to mix with the soil of gathering, and the soil of gathering is close to the root of crops, consequently, the soil data that obtains more accords with the growth situation of crops, production observation effect to crops is better, when needs take off sampler barrel 20, separate threaded cover 19 and first threaded rod 7, rotate sampler barrel 20, auger 21 rotates out along the opening on auger cover 19 this moment and the soil sample on auger 21 can be stayed inside sampler barrel 20, lift off sampler barrel 20 after open screw cover 19 and can take out the detection with the soil sample, and sampler barrel 20 then can lift the washing off, reduce abluent degree of difficulty, improve abluent efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The agricultural planting soil pH value detection sampling device comprises a base (1) and is characterized in that a plurality of first fixing cones (2) are fixedly connected to the side wall of the base (1), a plurality of first openings are formed in the base (1), a plurality of second openings are formed in the base (1), a lead screw (3) is rotatably connected to the side wall of the base (1), a screw sleeve (4) is arranged on the lead screw (3), a rotary disc (9) is fixedly connected to one end, far away from the base (1), of the lead screw (3), a plurality of bearing plates (5) are fixedly connected to the side wall of each bearing plate (5), close to the base (1), of each bearing plate (5), a plurality of second fixing cones (6) are fixedly connected to the side wall of each bearing plate, the second fixing cones (6) penetrate through a plurality of first openings, and a plurality of first threaded rods (7) are slidably connected to each bearing plate (5), the multiple first threaded rods (7) penetrate through the bearing plate (5), one end, close to the base (1), of each first threaded rod (7) is provided with a sampling device, a second threaded rod (8) is connected to the interior of each first threaded rod (7) in a rotating mode through threads, the multiple second threaded rods (8) extend into the multiple sampling devices respectively, one end, far away from the base (1), of the lead screw (3) is fixedly connected with a fixing plate (10) through a bearing, the multiple first threaded rods (7) penetrate through the fixing plate (10), the multiple first threaded rods (7) are connected with multiple connecting rods (11) in a rotating mode through threads, and one end, far away from the first threaded rods (7), of each connecting rod (11) is provided with a connecting device;
a plurality of threaded holes are formed in the side walls, close to the connecting device, of the bearing plate (5) and the fixing plate (10), and each threaded hole is rotatably connected with a threaded strip (12);
one end of each connecting rod (11) close to the connecting device is provided with an inner groove, each inner groove is provided with a strip-shaped opening, and a plurality of thread strips (12) penetrate through the inner grooves;
the side wall of each thread strip (12) is fixedly connected with a first bevel gear (13), each first bevel gear (13) is rotatably connected with a second bevel gear (14), each first bevel gear (13) and the side wall of each second bevel gear (14) are rotatably connected with a rotating bearing (15), and a plurality of rotating bearings (15) in the same inner groove are fixedly connected through a support rod (16);
each second bevel gear (14) is fixedly connected with a rotating rod (17), each rotating rod (17) penetrates through the strip-shaped opening, and one end, far away from the second bevel gear (14), of each rotating rod (17) is fixedly connected with a handle (18); the rotating rod (17) can slide on the sliding rod, so that the rotating rod (17) can not be dislocated when the handle (18) is rotated by people, the use of the people is facilitated, and the sampling devices penetrate through the second openings respectively.
2. The agricultural planting soil pH value detection sampling device of claim 1, wherein each sampling device is provided with a sampling cylinder (20), one end of each sampling cylinder (20) close to the first threaded rod (7) is provided with a threaded cover (19), and each threaded cover (19) is connected with the first threaded rod (7) in a clamping mode.
3. The agricultural planting soil pH value detects sampling device of claim 2, characterized in that, a plurality of the second threaded rod (8) run through a plurality of screw caps (19) and stretch into a plurality of sampling barrels (20), every second threaded rod (8) stretch into the inside part fixedly connected with auger (21) of sampling barrel (20), a plurality of the size of auger (21) and the size of a plurality of sampling barrels (20) match.
4. The agricultural planting soil pH value detection sampling device of claim 2, wherein one end of each sampling cylinder (20) far away from the first threaded rod (7) is rotatably connected with a plurality of conical covers (22) through torsion springs (23), and the conical covers (22) on the same sampling cylinder (20) are abutted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011204208.7A CN112284797B (en) | 2020-11-02 | 2020-11-02 | Sampling device is detected to farming soil pH valve |
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| CN202011204208.7A CN112284797B (en) | 2020-11-02 | 2020-11-02 | Sampling device is detected to farming soil pH valve |
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| CN112284797A (en) | 2021-01-29 |
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