A deep soil leachate collection device

Abstract

A deep soil leachate collection device includes a trigger chamber, a detachable storage chamber at the lower end of the trigger chamber, and a collection chamber at the lower end of the storage chamber. Several filter holes are formed at the lower end of the collection chamber. A filter plate is fixedly installed on the inner circumference of the lower end of the storage chamber. A coaxial piston is positioned above the filter plate, with its outer circumference in airtight sliding contact with the inner circumference of the storage chamber. A coaxial piston rod is fixedly installed on the piston, and the piston rod is slidably mounted on the storage chamber via a sliding sleeve. The outer circumference of the piston rod is connected to the storage chamber via a first spring. A corrosion pin is abutted against the upper end of the piston rod, and the first spring is in a compressed state. This invention features a simple structure and ingenious design. The first spring-energy-storing negative pressure triggering mechanism enables the collection device to automatically collect leachate at regular intervals, eliminating the need for manual extraction and saving labor costs. Furthermore, the device is a purely mechanical structure, requiring no power supply, allowing for unrestricted field operations, meeting market demands, and is suitable for widespread adoption.

Description

Technical Field

[0001] This utility model belongs to the field of soil leachate collection, specifically a deep soil leachate collection device. Background Technology

[0002] A deep soil leachate collection device is a specialized instrument used to collect leachate (i.e., soil water or pore water) from deep soil layers (usually at a certain depth below the surface). Its core function is to obtain soluble substances or pollutants that migrate with water in the soil through physical or chemical methods, in order to analyze the soil's physicochemical properties, pollution status, or hydrogeological characteristics. Most existing soil leachate collection methods require periodic manual extraction or rely on electric pumps. Manual extraction requires frequent on-site visits by personnel, resulting in high time costs; electric pump extraction requires continuous power, limiting field operations. Therefore, we designed a purely mechanical deep soil leachate collection device that eliminates the need for manual extraction. Utility Model Content

[0003] This invention provides a deep soil leachate collection device to address the deficiencies in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] A deep soil leachate collection device includes a trigger chamber, a storage chamber detachably located at the lower end of the trigger chamber, and a collection chamber detachably located at the lower end of the storage chamber. Several filter holes are opened at the lower end of the collection chamber. A filter plate is fixedly installed on the inner circumference of the lower end of the storage chamber. A coaxial piston is located above the filter plate. The outer circumference of the piston is in airtight sliding contact with the inner circumference of the storage chamber. A coaxial piston rod is fixedly installed on the piston. The piston rod is slidably installed on the storage chamber via a sliding sleeve. The outer circumference of the piston rod is connected to the storage chamber via a first spring. A corrosion pin is abutted against the upper end of the piston rod. The first spring is in a compressed state. The corrosion pin is slidably installed in a pre-drilled hole on the side wall of the trigger chamber. The corrosion pin is connected to the trigger chamber via a second spring.

[0006] As described above, in a deep soil leachate collection device, the bottom of the piston is rotatably connected to one end of a telescopic shaft, the other end of the telescopic shaft passes through a pre-drilled hole on a filter plate and is rotatably installed in the pre-drilled hole through a sealed bearing, a slide rod is fixedly installed on the telescopic shaft, a spiral groove is opened on the inner circumference of the storage chamber, the slide rod is slidably installed in the spiral groove, an insert is fixedly installed at one end of the telescopic shaft passing through the filter plate, a spiral blade is rotatably installed in the collection chamber, a slot is opened at the upper end of the spiral blade shaft, and the insert is inserted into the slot.

[0007] As described above, in a deep soil leachate collection device, coaxial rings are fixedly installed at the lower ends of the trigger chamber and the storage chamber, respectively. The outer circumference of the rings is provided with threads. The upper ends of the storage chamber and the collection chamber are respectively provided with coaxial first annular grooves. The inner circumference of the first annular grooves is provided with threads. The rings are threadedly installed in the corresponding first annular grooves.

[0008] As described above, in a deep soil leachate collection device, the lower end of the collection chamber is closed and inclined.

[0009] As described above, in a deep soil leachate collection device, the outer periphery of the upper end of the trigger chamber is provided with threads and an internal threaded cover is installed in threaded fit.

[0010] As described above, in a deep soil leachate collection device, a second annular groove is formed at the upper end of the trigger chamber and at the bottom of the first annular groove. An annular sealing rubber gasket is placed in each of the second annular grooves, and the annular ring and the internal threaded cap are tightly fitted with the corresponding sealing rubber gasket. A third annular groove is formed on the inner circumference of the pre-drilled hole in the trigger chamber, and an elastic O-ring sealing rubber ring is placed in the third annular groove. The inner circumference of the elastic O-ring sealing rubber ring is tightly fitted with the outer circumference of the corrosion pin. When the corrosion pin fails, the elastic O-ring sealing rubber ring seals the pre-drilled hole on the trigger chamber.

[0011] The advantages of this utility model are: the utility model has a simple structure and ingenious design. The first spring-energy-storing negative pressure triggering mechanism enables the collection device to automatically collect data at regular intervals without the need for manual extraction, thus saving labor costs. Moreover, the device is a purely mechanical structure, requiring no power supply, and is not limited in field operations. It can meet market demands and is suitable for widespread application. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of part I; Figure 3 yes Figure 1 Enlarged view of part II; Figure 4 yes Figure 1 A magnified view of part III.

[0014] Reference numerals: 1. Trigger chamber, 2. Liquid storage chamber, 3. Collection chamber, 4. Filter hole, 5. Filter plate, 6. Piston, 7. Piston rod, 8. First spring, 9. Corrosion pin, 10. Second spring, 20. Telescopic shaft, 21. Slide rod, 22. Spiral groove, 23. Insert block, 24. Spiral blade, 25. Slot, 30. Ring, 31. First annular groove, 50. Internal threaded cover, 60. Second annular groove, 61. Sealing rubber gasket, 62. Third annular groove, 63. Elastic O-ring seal. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] A deep soil leachate collection device, such as Figure 1 , 2As shown in Figures 3 and 4, the device includes a trigger chamber 1. A liquid storage chamber 2 is detachably mounted at the lower end of the trigger chamber 1. A collection chamber 3 is detachably mounted at the lower end of the liquid storage chamber 2. The trigger chamber 1, liquid storage chamber 2, and collection chamber 3 are coaxially arranged. Several filter holes 4 are opened at the lower end of the collection chamber 3, preventing soil particles from entering the filter holes 4. A filter plate 5 is fixedly installed on the inner circumference of the lower end of the liquid storage chamber 2. A coaxial piston 6 is located above the filter plate 5. The outer circumference of the piston 6 is in airtight sliding contact with the inner circumference of the liquid storage chamber 2. A coaxial piston rod 7 is fixedly mounted on the piston 6. The piston rod 7 is slidably mounted on the liquid storage chamber 2 via a sliding sleeve. The outer circumference of the piston rod 7 is connected by a first spring. A first spring 8 is connected to the storage tank 2. The first spring 8 is fitted around the outer periphery of the piston rod 7. One end of the first spring 8 is fixedly connected to the inner periphery of the storage tank 2, and the other end is fixedly connected to the outer periphery of the piston rod 7. A corrosion pin 9 is fitted against the upper end of the piston rod 7. The first spring 8 is in a compressed state. The corrosion pin 9 is slidably installed in a pre-drilled hole on the side wall of the trigger chamber 1. The corrosion pin 9 is connected to the trigger chamber 1 via a second spring 10. The second spring 10 is fitted around the outer periphery of the corrosion pin 9. One end of the second spring 10 is fixedly connected to the outer periphery of the trigger chamber 1, and the other end is fixedly connected to the outer periphery of the corrosion pin 9. This utility model has a simple structure and ingenious design. The energy-storing negative pressure triggering mechanism of the first spring 8 enables the collection device to automatically collect data at regular intervals, eliminating the need for manual extraction and saving labor costs. Furthermore, this device is a purely mechanical structure, requiring no power supply, allowing for unrestricted field operations, meeting market demands, and is suitable for widespread adoption. When using this invention, the handheld trigger chamber 1 is used to insert the collection chamber 3 into the soil of the area to be collected. The collection device is then pressed down until the corrosion pin 9 is buried in the soil. The corrosion time of the corrosion pin 9 can be set according to the required collection time. Different copper alloys with different corrosion rates can be selected according to different soil pH values ​​to achieve timing. After the corrosion pin 9 breaks, it no longer blocks the piston rod 7. The first spring 8 extends and releases energy. Under the elastic force of the first spring 8, the piston rod 7 moves upward. The upward movement of the piston rod 7 drives the piston 6 to move upward. The volume below the piston 6 increases and the pressure decreases, forming a negative pressure. The leachate in the soil enters the collection chamber 3 through the filter hole 4, and then enters the storage chamber 2 from the collection chamber 3. When entering the storage chamber 2 from the collection chamber 3, the leachate will undergo secondary filtration through the filter plate 5. Since the external pressure of the collection device is greater than the internal pressure, the leachate is in the storage chamber 2. After the collection device is pulled out of the soil, the storage chamber 2 and the collection chamber 3 are separated, and the leachate in the storage chamber 2 can be poured into the collection bottle.

[0017] Specifically, as shown in the figure, in this embodiment, the bottom of the piston 6 is rotatably connected to one end of the telescopic shaft 20, and the other end of the telescopic shaft 20 passes through a pre-drilled hole on the filter plate 5 and is rotatably installed in the pre-drilled hole through a sealed bearing. The two ends of the telescopic shaft 20 are respectively fixedly connected to the inner rings of coaxial sealed bearings, and the outer rings of the sealed bearings are sequentially fixedly connected to the bottom of the piston 6 and the inner circumference of the pre-drilled hole. A slide rod 21 is fixedly installed on the telescopic shaft 20, and a spiral groove 22 is formed on the inner circumference of the liquid storage tank 2. The slide rod 21 is slidably installed in the spiral groove 22, and the end of the telescopic shaft 20 passing through the filter plate 5 is fixedly installed... Insert block 23 is used to rotatably mount spiral blade 24 inside collection chamber 3. The elastic force of the first spring 8 is greater than the sum of the resistance of spiral groove 22 to slide rod 21, the resistance of collection chamber 3 to spiral blade 24, and the resistance of storage chamber 2 to piston 6. A slot 25 is opened at the upper end of the spiral blade 24's rotating shaft, and insert block 23 is inserted into slot 25. Spiral blade 24 is coaxially arranged with collection chamber 3, and the outer circumference of spiral blade 24 is slidably connected to the inner circumference of collection chamber 3. The lower outer circumference of spiral blade 24's rotating shaft is fixedly connected to the inner ring of a coaxial bearing, and the outer ring of the bearing is fixedly connected to the inner wall of collection chamber 3. When piston 6 moves upward, it drives one end of telescopic shaft 20 to move upward, and telescopic shaft 20 extends. Telescopic shaft 20 drives slide rod 21 to move upward. Since slide rod 21 is slidably mounted in spiral groove 22, the upward movement of slide rod 21 drives telescopic shaft 20 to rotate at the same time. Telescopic shaft 20 drives spiral blade 24 to rotate. The rotation of spiral blade 24 can assist in the upward transportation of soil leachate in collection chamber 3 to storage chamber 2.

[0018] Specifically, as shown in the figure, in this embodiment, coaxial rings 30 are fixedly installed at the lower ends of the trigger chamber 1 and the liquid storage chamber 2, respectively. The outer circumference of the rings 30 is provided with threads. The upper ends of the liquid storage chamber 2 and the collection chamber 3 are respectively provided with coaxial first annular grooves 31. The inner circumference of the first annular grooves 31 is provided with threads. The rings 30 are threadedly installed in the corresponding first annular grooves 31. Twisting the trigger chamber 1 causes the rings 30 at its lower end to rotate, so that the rings 30 move out of the corresponding first annular grooves 31. At this time, the trigger chamber 1 and the liquid storage chamber 2 can be separated. Similarly, twisting the liquid-sealed chamber 2 causes the insert 23 to move out of the slot 25, which can separate the liquid-sealed chamber 2 and the collection chamber 3 for easy storage of the device.

[0019] Furthermore, as shown in the figure, the lower end of the collection chamber 3 in this embodiment is closed and inclined. The closed lower end of the collection chamber 3 can prevent soil from entering the collection chamber 3, and the inclined lower end makes it easier to insert the collection chamber 3 into the soil.

[0020] Furthermore, as shown in the figure, the outer periphery of the upper end of the trigger chamber 1 in this embodiment is provided with threads, and an internal threaded cover 50 is installed in threaded contact with it. The internal threaded cover 50 seals the upper end of the trigger chamber 1 to prevent rainwater and other impurities from entering the trigger chamber 1.

[0021] Furthermore, as shown in the figure, in this embodiment, a second annular groove 60 is respectively formed at the upper end of the trigger chamber 1 and the bottom of the first annular groove 31. Annular sealing rubber gaskets 61 are placed in the second annular groove 60, and the annular 30 and the internal threaded cap 50 are tightly fitted with the corresponding sealing rubber gaskets 61. A third annular groove 62 is formed on the inner circumference of the reserved hole in the trigger chamber 1. An elastic O-ring sealing rubber ring 63 is placed in the third annular groove 62. The inner circumference of the elastic O-ring sealing rubber ring 63 is tightly fitted with the outer circumference of the corrosion pin 9. When the corrosion pin 9 fails, the elastic O-ring sealing rubber ring 63 seals the reserved hole on the trigger chamber 1. The sealing rubber gasket 61 can increase the sealing between the trigger chamber 1 and the internal threaded cap 50, between the trigger chamber 1 and the liquid storage chamber 2, and between the liquid storage chamber 2 and the collection chamber 3, ensuring a good sealing effect. The elastic O-ring sealing rubber ring 63 can prevent the trigger chamber 1 from communicating with the outside through its reserved hole, ensuring a tight seal.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A deep soil leachate collection device, comprising a trigger chamber (1), a storage chamber (2) detachably disposed at the lower end of the trigger chamber (1), a collection chamber (3) detachably disposed at the lower end of the storage chamber (2), a plurality of filter holes (4) being opened at the lower end of the collection chamber (3), a filter plate (5) being fixedly installed on the inner circumference of the lower end of the storage chamber (2), a coaxial piston (6) being disposed above the filter plate (5), the outer circumference of the piston (6) being in airtight sliding contact with the inner circumference of the storage chamber (2), a coaxial piston rod (7) being fixedly installed on the piston (6), the piston rod (7) being slidably mounted on the storage chamber (2) through a sliding sleeve, characterized in that: The outer periphery of the piston rod (7) is connected to the liquid storage chamber (2) through the first spring (8). The upper end of the piston rod (7) is fitted with a corrosion pin (9). The first spring (8) is in a compressed state. The corrosion pin (9) is slidably installed in the reserved hole on the side wall of the trigger chamber (1). The corrosion pin (9) is connected to the trigger chamber (1) through the second spring (10).

2. The deep soil leachate collection apparatus of claim 1, wherein: The bottom of the piston (6) is rotatably connected to one end of the telescopic shaft (20). The other end of the telescopic shaft (20) passes through the reserved hole on the filter plate (5) and is rotatably installed in the reserved hole through the sealed bearing. A slide rod (21) is fixedly installed on the telescopic shaft (20). A spiral groove (22) is opened on the inner circumference of the liquid storage tank (2). The slide rod (21) is slidably installed in the spiral groove (22). A plug block (23) is fixedly installed at one end of the telescopic shaft (20) that passes through the filter plate (5). A spiral blade (24) is rotatably installed in the collection tank (3). A slot (25) is opened at the upper end of the rotating shaft of the spiral blade (24). The plug block (23) is inserted into the slot (25).

3. A deep soil leachate collection apparatus according to claim 2, characterised in that: The lower ends of the trigger chamber (1) and the liquid storage chamber (2) are respectively fixedly installed with coaxial rings (30). The outer circumference of the rings (30) is respectively provided with threads. The upper ends of the liquid storage chamber (2) and the collection chamber (3) are respectively provided with coaxial first annular grooves (31). The inner circumference of the first annular grooves (31) is respectively provided with threads. The rings (30) are threadedly installed in the corresponding first annular grooves (31).

4. The deep soil leachate collection apparatus of claim 1, wherein: The lower end of the collection chamber (3) is closed and tilted.

5. The deep soil leachate collection apparatus of claim 3, wherein: The outer periphery of the upper end of the trigger chamber (1) is threaded and an internal threaded cover (50) is installed in threaded fit.

6. A deep soil leachate collection apparatus according to claim 5, wherein: The upper end of the trigger chamber (1) and the bottom of the first annular groove (31) are respectively provided with a second annular groove (60). An annular sealing rubber gasket (61) is placed in the second annular groove (60). The annular (30) and the internal threaded cover (50) are tightly fitted with the corresponding sealing rubber gasket (61). A third annular groove (62) is provided on the inner circumference of the reserved hole of the trigger chamber (1). An elastic O-ring sealing rubber ring (63) is placed in the third annular groove (62). The inner circumference of the elastic O-ring sealing rubber ring (63) is tightly fitted with the outer circumference of the corrosion pin (9). When the corrosion pin (9) fails, the elastic O-ring sealing rubber ring (63) seals the reserved hole on the trigger chamber (1).

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