CN203037491U - Portable deep in-situ soil sampling device - Google Patents

Abstract

The utility model relates to a portable deep in-situ soil sampling device, which comprises a hammering handle, a threaded joint, a connecting rod and a sampling head which are sequentially connected from top to bottom, one end of the connecting rod is threaded on the threaded joint, and the other end The thread is connected to the sampling head, the connecting rod and the outer casing of the sampling head are used to limit the straightness device. The straightness limiting device includes a cylindrical sleeve. An annular block is arranged at the bottom port of the sleeve, and a perforation is arranged in the center of the annular block, and the sampling head and the connecting rod pass through the cylindrical sleeve and the perforation. The utility model is capable of layered sampling and deep sampling, and the straight limiting device ensures that the sampling head and the connecting rod enter the soil layer vertically, prevents the sampling head and the connecting rod from disturbing other soil layers when they enter the soil layer, and does not damage the original soil Layer, detachable, easy to carry, greatly improving the efficiency of soil sample collection.

Description

A portable deep in-situ soil sampling device

technical field

The utility model relates to a portable deep in-situ soil sampling device, which belongs to the technical field of soil sampling equipment.

Background technique

China is a large agricultural country with only 7% of the world's arable land, but it needs to feed 22% of the world's population. In order to obtain high yields to meet the growing population needs, China's production and use of chemical fertilizers currently rank first in the world. In 2008, the national fertilizer application The amount used is 52.39 million tons, with an average of 430.4kg/hm ² , far exceeding the safety upper limit of 225kg/hm ² set by developed countries to prevent water pollution from chemical fertilizers. The average utilization rate of chemical fertilizers is only about 40%. The application of a large amount of chemical fertilizers brings about the problem of excessive fertilizer pollution: on the one hand, high-volume fertilizer input can easily lead to the enrichment of soil nutrients, resulting in eutrophication of the soil; on the other hand, a large amount of lost chemical fertilizers enter the groundwater and Surface water aggravates the eutrophication of water bodies. In addition, the excessive input of organic fertilizer in the production of protected vegetables can not only obviously cause the accumulation of nitrogen, phosphorus and potassium nutrients in the soil, but also the accumulation of heavy metals in organic fertilizers in the protected vegetable field has become a major hidden danger to the environmental safety of the protected vegetable field industry . Therefore, understanding the soil nutrient status of different soil layers is the primary task of soil, plant nutrition and agricultural environmental protection researchers, so as to "prescribe the right medicine" and truly solve the problems of soil pollution and environmental safety.

Whether the soil nutrient measurement and analysis results are true and reliable, and whether the related issues can be explained scientifically, the focus is on the collection and processing of soil samples, among which the collection of soil samples is the premise and basis of the entire analysis work, so scientific research is carried out according to the purpose of the experiment. Soil sample collection is very important to understand the soil nutrient status of different soil layers. During the soil sample collection process, stratified sampling should be performed as accurately as possible. In the process of collecting soil stratified samples, manual excavation is often used. Manual excavation is often destructive, time-consuming and labor-intensive, and it is difficult to accurately control the depth of the soil layer during manual operation. With the advancement of technology, the emergence of earth-borrowing devices has solved the technical problem of labor time and labor. At present, domestic soil-borrowing devices mainly include direct pressing, hammering and pressing, and pressing and rotating. The direct pressure type soil fetching device is mainly suitable for collecting soil samples of the plow layer with relatively soft soil layer, and the soil fetching depth is relatively shallow, generally 0-20cm; the hammer pressurized soil fetching device is suitable for relatively hard soil, and the soil fetching depth exceeds 40cm Above, the opening of the drill bit is generally about 50cm. The disadvantage is that because the soil is deep and the soil is hard, it is easy to cause damage to the soil borrower when hammering as power, which is labor-intensive and expensive; and the drill bit pressed into the rotary soil removal device is helical. Although It can reduce the resistance when taking soil, but it cannot maintain the soil layer structure of the in-situ soil, so it is not suitable for the research purpose of taking soil in layers.

Chinese patent CN101832883 discloses a layered soil scraping sampler, the structure of which includes a rectangular sampling frame and a rectangular scraper that can slide along the sampling frame to scrape soil, and depth-limiting devices are arranged on both sides of the scraper. It can precisely control the thickness of soil layers, obtain a large number of soil samples at one time, and is easy to operate and carry. But this soil layer scraping sampler has the following defects in use: (1), when in use, the horizontal frame is driven into the ground first, then scrape the soil back and forth along the horizontal frame with a scraper, and use a small shovel, etc. at any time The tool collects the scraped soil samples. When the scraping reaches the preset single-layer sample sampling depth, it slides back and forth to scrape the soil until all the soil samples at the set depth are scraped. This device requires repeated scraping by manpower. The soil layer is time-consuming, laborious, slow, and inefficient. Due to the long-term accumulation of fertilization, the accumulation of nutrients in the soil has gradually moved down. This device is only suitable for collecting samples of the soft soil layer. Layer samples cannot be collected. (2) After sampling, large soil pits will be left on the surface, which will seriously damage the surface topography.

Chinese patent CN201527361 discloses a portable soil sample collection drill, which includes a tubular drill bit and a drill rod, and the drill rod is composed of two parts connected by threads. The portable soil sample collection drill adjusts the length of the drill rod through ingenious design, which is convenient to carry and meets the needs of sample collection at different depths. It has the advantages of convenient operation and low cost. However, the disadvantage of this patent is that when the soil is taken from deep layers and the soil quality is hard, when hammering is used as the power, the power directly acts on the drill bit and drill pipe of the collection drill, and the drill bit and drill pipe are easily damaged, and the drill pipe is longer , it is easy to tilt when entering the soil layer, resulting in inaccurate sampling of the soil layer during sampling, and the soil sample is easily polluted.

Invention content:

Aiming at the deficiencies of the prior art, the utility model provides a portable deep in-situ soil sampling device, which can sample layers and deep samples. The straight limiting device ensures that the sampling head and the connecting rod enter the soil layer vertically, preventing the sampling head and the The connecting rod tilts and disturbs other soil layers when entering the soil layer, does not destroy the original soil layer of the soil, is detachable, and is easy to carry, which greatly improves the efficiency of soil sample collection.

The technical scheme of the utility model is as follows:

A portable deep in-situ soil sampling device, comprising a hammering handle, a threaded joint, a connecting rod and a sampling head sequentially connected from top to bottom, the hammering handle is fixedly connected to the threaded joint, and the connecting rod One end is threaded on the threaded joint, and the other end is threaded on the sampling head. It is characterized in that the connecting rod and the outer casing of the sampling head have a straight limiting device, and the straight limiting device includes a cylindrical sleeve, and the cylindrical sleeve The outer periphery of the bottom end of the cylinder is provided with a horizontal plate, the cylindrical sleeve is perpendicular to the horizontal plate, the horizontal plate is fixedly connected with the bottom periphery of the cylindrical sleeve, and the bottom port of the cylindrical sleeve is provided with a ring Blocking platform, the center of the annular blocking platform is provided with a perforation, the sampling head and the connecting rod pass through the cylindrical sleeve and the perforation, and the outer surface of the connecting rod is provided with a scale mark. The cooperation of the ring stopper and the straight limiting device makes the sampling head and the connecting rod vertically enter the soil layer, prevents the sampling head and the connecting rod from disturbing other soil layers when they enter the soil layer, and makes the sampling head more accurate in sampling in each soil layer ; When the sampling is completed and the connecting rod is pulled out vertically, the sampling head and the connecting rod are pulled out from the perforation in the center of the ring stop to play a guiding role. The purpose of cleaning the connecting rod does not require manual secondary cleaning.

The bottom of the horizontal plate is provided with protruding points, and the thorn points of the protruding points face downward. When in use, the protruding tip is inserted into the soil to play the role of fixing the straightening device, preventing the straightening device from shaking during use and affecting the collection of soil samples.

The horizontal plate forms a circular horizontal plate on the outer periphery of the bottom end of the cylindrical sleeve. The circular horizontal plate increases the contact area with the ground, and the cooperation of the circular horizontal plate and the cylindrical sleeve makes the straight limiting device more stable and vertically stand on the ground surface.

The horizontal plate forms a square horizontal plate on the outer periphery of the bottom end of the cylindrical sleeve.

The middle part of the hammering handle is provided with a cross-grip bar passing through the hammering handle transversely, the two ends of the cross-grip bar are located on both sides of the hammering handle, and two Reinforcement bracket, one end of the reinforcement bracket is fixed on the hammering handle, and the other end is fixedly connected to the cross grip bar; the hammering handle and the two reinforcement brackets form a triangle.

The outer surface of the connecting rod is provided with external threads, and the connecting rod is threaded with a limit device, and the limit device includes a limit clamp and a connecting ring, one end of the limit clamp is fixedly connected with the connecting ring, and the connecting ring There is a connection hole inside, the inner wall of the connecting ring is provided with an internal thread that matches the external thread on the surface of the connecting rod, an axial slot is provided on the side wall of the cylindrical sleeve, and the other end of the limit clamp is located at In the card slot and can move up and down along the card slot.

There are two limiting clips, which are arranged symmetrically on both sides of the connecting ring, and there are correspondingly two locking grooves on the side wall of the cylindrical sleeve.

The cross-section of the sampling head is c-shaped, the bottom of the sampling head is arc-shaped, and the height of the sampling head is 15 ~ 35cm. The side wall of the sampling head is provided with an axial soil pouring hole. The height is 12~33cm, and the width is 15~20mm.

A long observation hole is provided on the side wall of the cylindrical sleeve. The position of the limit device in the cylindrical sleeve can be observed through the observation hole.

After use, in order to facilitate the extraction of the straight limiting device, the cylindrical sleeve is provided with a handle.

The shape of the hammering handle is in the shape of an inverted Erlenmeyer flask, the inside is a solid structure, the material is stainless steel, and the top of the hammering handle is a smooth hammering contact surface. The smooth hammering contact surface can reduce the direct impact of the hammering force on the earth-borrowing device; the handle body gradually becomes thinner downwards, and the thickness of the connecting rod is basically the same as that of the connecting rod near the threaded connection, which is conducive to ensuring the hammering handle. Strong and beautiful.

The hammering handle, cross grip bar, connecting rod and reinforcement bracket are all made of solid stainless steel.

The material of the sampling head is 304 stainless steel.

work process:

A method for using a portable deep in-situ soil sampling device, comprising the following steps:

(1) Select a sampling point with a flat surface, place the vertical limiting device vertically on the sampling point, insert the protruding point at the bottom of the horizontal plate into the soil layer and make the bottom of the horizontal plate close to the ground;

(2) According to the sampling depth, adjust the position of the straight limiting device fixed on the connecting rod, and align the end of the limit chuck with the slot on the side wall of the cylindrical sleeve, and extend the sampling head and the connecting rod into the cylindrical sleeve together. In the sleeve, the sampling head is aligned with the perforation in the center of the ring block;

(3) Apply pressure to the hammer handle, and the sampling head enters the soil layer through the perforation of the annular stopper. As the sampling head gradually enters the soil layer, the limit chuck of the limit device moves along the side wall of the cylindrical sleeve. The card slot moves down gradually;

(4) Observe the position movement of the limit device in the cylindrical sleeve from the observation hole, and stop applying pressure when the limit device is in contact with the annular stopper. Location;

(5) Hold the horizontal grip bar, rotate it 2-3 times clockwise, and then slowly pull out the sampling head vertically, the sampling head is filled with soil samples of the corresponding soil layer;

(6) Insert the soil knife into the soil pouring hole, push out the soil samples in the sampling head one by one, put them into the sealing bag, and record the relevant information;

(7) Adjust the position of the straight limiting device so that the end of the limit clamp is aligned with the slot on the side wall of the cylindrical sleeve, and the sampling head and the connecting rod are inserted into the cylindrical sleeve together, and the sampling head and the ring stop Align the perforation in the center of the table; repeat steps (3), (4), (5), and (6) for layered collection of soil samples at different depths.

The utility model has the following advantages:

1. The cooperation between the annular stopper and the straight-limiting device of the utility model makes the sampling head and the connecting rod vertically enter the soil layer, prevents the sampling head and the connecting rod from disturbing other soil layers when they enter the soil layer, and avoids different layers of soil Mixing makes the sampling head more accurate in sampling in each soil layer, and achieves the purpose of deep in-situ sampling.

2. The bottom of the horizontal plate of the straight limiting device of the utility model is provided with a protruding point, which can be pierced into the soil during use to fix the straight limiting device more firmly.

3. The utility model can accurately control the layered thickness of the soil sample through the cooperation of the limit device, the scale mark on the outer wall of the connecting pipe and the ring stopper, and greatly improves the efficiency of soil sample collection.

4. The utility model is provided with two reinforcing brackets on both sides of the hammering handle respectively. The hammering handle and the two reinforcing brackets form a triangle, and they are all made of solid stainless steel, which makes the sampling device firmer, more stable and less prone to deformation.

5. After the sampler of the utility model is pulled out from the ground surface, the ring-shaped block plays a role in blocking and removing the soil on the outer surface of the sampling head and the connecting rod, so as to achieve the purpose of cleaning the connecting rod without manual secondary cleaning.

6. The utility model is simple in structure and low in cost. The connecting rod, the hammering handle and the sampling head are all connected by threads, which are detachable and easy to carry.

Description of drawings

Fig. 1 is the structural representation of sampling device of the present utility model;

Fig. 2 is a schematic diagram of the connection structure between the hammer handle and the threaded joint of the utility model;

Fig. 3 is the schematic diagram of the sectional structure of the straight limiting device of the sampling device of the present invention;

Fig. 4 is a schematic diagram of the connection structure of the connecting rod, the limit device, and the cylindrical sleeve of the sampling device of the present invention;

Fig. 5 is the enlarged structural view of the limit device of the sampling device of the present invention;

Fig. 6 is the structural enlarged view of sampling head of the present utility model;

Fig. 7 is a schematic diagram of the top view structure of the straight limiting device of the sampling device of embodiment 1;

Fig. 8 is a schematic diagram of the top view structure of the straight limiting device of the sampling device in embodiment 2;

Among them: 1. Hammer handle; 2. Horizontal grip rod; 3. Reinforced bracket; 4. Threaded joint; 5. Connecting rod; 6. Sampling head; 7. Straight limit device; 8. Limit device; 9. Cylindrical Sleeve; 10. Horizontal plate; 11. Ring block; 12. Protruding tip; 13. External thread on connecting rod; 14. Scale mark on connecting rod; 15. Card slot on the side wall of cylindrical sleeve; 16. Connecting ring; 17. Limit clamp; 18. Connecting hole inside the connecting ring; 19. Soil pouring hole; 20. Scale mark on the side wall of the sampling head.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but is not limited thereto.

Example 1:

A portable deep in-situ soil sampling device, the structure is shown in Figure 1-8 from top to bottom, including hammer handle 1, threaded joint 4, connecting rod 5 and sampling head 6 connected in sequence, hammer handle 1 It is fixedly connected with the threaded joint 4, one end of the connecting rod 5 is threaded on the threaded joint 4, and the other end is threaded on the sampling head 6, and the middle part of the hammering handle 1 is provided with a horizontal grip bar which passes through the hammering handle 1 2. The two ends of the horizontal grip bar 2 are located on both sides of the hammer handle 1, and two reinforcement brackets 3 are respectively arranged on both sides of the hammer handle 1, and one end of the reinforcement bracket 3 is fixed on the hammer handle 1, The other end is fixedly connected to the cross grip bar 2; the hammering handle 1 and the two reinforcement brackets 2 form a triangle. The hammering handle 1 is in the shape of an inverted Erlenmeyer flask with a solid inner structure made of stainless steel, and the upper surface of the hammering handle 1 is a smooth hammering contact surface.

The connecting rod 5 and the sampling head 6 are covered with a straight-limiting device 7, and the straight-limiting device 7 includes a cylindrical sleeve 9. A horizontal plate 10 is arranged on the outer periphery of the bottom end of the cylindrical sleeve 9, and the cylindrical sleeve 9 is perpendicular to the horizontal plate 10. The horizontal plate 10 is fixedly connected to the periphery of the bottom end of the cylindrical sleeve 9, and the horizontal plate 10 forms a circular horizontal plate on the outer periphery of the bottom end of the cylindrical sleeve 9, as shown in FIG. 7 . The circular horizontal plate increases the contact area with the ground, and the cooperation of the circular horizontal plate and the cylindrical sleeve makes the straight limiting device more stable and vertically stand on the ground surface. The bottom port of the cylindrical sleeve 9 is provided with an annular stopper 11, and the center of the annular stopper 11 is provided with a perforation. When in use, the sampling head 6 and the connecting rod 5 pass through the cylindrical sleeve 9 and the perforation, and the outer surface of the connecting rod 5 is provided with a scale Mark 14. A protruding point 12 is arranged on the bottom of the horizontal plate 10, and the sharp point of the protruding point 12 faces downward. When in use, the protruding tip 12 is inserted into the soil to play the role of fixing the straightening device, preventing the straightening device from shaking during use and affecting the collection of soil samples.

The structure is shown in Figures 3-5, the outer surface of the connecting rod 5 is provided with an external thread 13, and the connecting rod 5 is screwed with a limiting device 8, and the limiting device 8 includes a limiting chuck 17 and a connecting ring 16, One end of the limit chuck 17 is fixedly connected with the connecting ring 16, the connecting ring 16 is provided with a connecting hole 18, the inner wall of the connecting ring 16 is provided with an internal thread that matches the external thread on the surface of the connecting rod 5, and the cylindrical sleeve 9 An axial slot 15 is arranged on the side wall of the side wall, and the other end of the stopper 17 is located in the slot 15 and can move up and down along the slot. There are two limiting clips 17, which are arranged symmetrically on both sides of the connecting ring 16, and two locking grooves 15 on the side wall of the cylindrical sleeve 9 are correspondingly arranged.

The cross-section of sampling head 6 is c-shaped, and the bottom of sampling head 6 is arc-shaped, and the height of sampling head is 15cm, and the side wall of sampling head 6 is provided with axially pouring soil hole 19, and the height of pouring soil hole is 12cm , the width is 15mm. A strip observation hole is provided on the side wall of the cylindrical sleeve 9 . The position of the limit device in the cylindrical sleeve can be observed through the observation hole.

The hammering handle, cross grip bar, connecting rod and reinforcement bracket are all made of solid stainless steel.

The material of the sampling head is 304 stainless steel.

Embodiment 2,

A kind of sampling device of portable deep in-situ soil as described in embodiment 1, its difference is,

The horizontal plate 10 forms a square horizontal plate on the periphery of the bottom end of the cylindrical sleeve 9, and the structure is as shown in FIG. 8 .

The height of the sampling head is 35cm, and the side wall of the sampling head 6 is provided with an axial soil-down hole 19, and the height of the soil-down hole is 33cm, and the width is 20mm.

Claims (9)

1. A sampling device for portable deep in-situ soil, comprising a hammering handle, a threaded joint, a connecting rod and a sampling head connected sequentially from top to bottom, the hammering handle is fixedly connected to the threaded joint, and the connecting One end of the rod is threaded on the threaded joint, and the other end is threaded on the sampling head. It is characterized in that the connecting rod and the sampling head cover the straight limiting device, and the straight limiting device includes a cylindrical sleeve, a cylindrical The outer periphery of the bottom end of the sleeve is provided with a horizontal plate, the cylindrical sleeve is perpendicular to the horizontal plate, the horizontal plate is fixedly connected with the periphery of the bottom end of the cylindrical sleeve, and the bottom port of the cylindrical sleeve is set There is an annular stopper, and a perforation is set in the center of the annular stopper, the sampling head and the connecting rod pass through the cylindrical sleeve and the perforation, and the outer surface of the connecting rod is provided with a scale mark. 2 . The portable deep in-situ soil sampling device according to claim 1 , wherein a protruding point is provided at the bottom of the horizontal plate, and the point of the protruding point faces downward. 3 . 3 . The portable deep in-situ soil sampling device according to claim 2 , wherein the horizontal plate forms a circular horizontal plate on the periphery of the bottom end of the cylindrical sleeve. 4 . 4. The portable deep in-situ soil sampling device according to claim 2, characterized in that, the horizontal plate forms a square horizontal plate on the outer periphery of the bottom end of the cylindrical sleeve. 5. The sampling device of the portable deep in-situ soil according to claim 1, characterized in that, the middle part of the hammering handle is provided with a cross-holding rod passing through the hammering handle transversely, and the cross-holding rod The two ends of the hammer are located on both sides of the hammer handle, and two reinforcement brackets are respectively arranged on both sides of the hammer handle. One end of the reinforcement bracket is fixed on the hammer handle, and the other end is fixedly connected to the horizontal grip bar; the hammer The batter handle, two reinforced braces form a triangle. 6. The portable deep in-situ soil sampling device according to any one of claims 1-5, characterized in that, the outer surface of the connecting rod is provided with external threads, and the connecting rod is threadedly connected with a limiting device, and the The limit device includes a limit clamp and a connecting ring, one end of the limit clamp is fixedly connected to the connecting ring, a connecting hole is provided inside the connecting ring, and an internal thread matching the external thread on the surface of the connecting rod is provided on the inner wall of the connecting ring , An axial slot is provided on the side wall of the cylindrical sleeve, and the other end of the limiting chuck is located in the slot and can move up and down along the slot. 7. The portable deep in-situ soil sampling device according to any one of claim 6, characterized in that, there are two limit chucks, which are symmetrically arranged on both sides of the connecting ring, and the cylindrical sleeve There are two card slots on the side wall of the barrel. 8. the sampling device of portable deep in-situ soil according to claim 1, is characterized in that, the cross-section of described sampling head is c-shaped, and the bottom of sampling head is arc-shaped, and the height of sampling head is 15～35cm , The side wall of the sampling head is provided with an axial soil pouring hole, the height of the soil pouring hole is 12~33cm, and the width is 15~20mm. 9. The sampling device of portable deep in-situ soil according to claim 1, characterized in that, the side wall of the cylindrical sleeve is provided with a strip-shaped observation hole, and the described cylindrical sleeve is provided with handle.

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