Leaching experiment device for parallel multi-water-head adjustment

Abstract

The utility model discloses a parallel type multi-water-head adjusting leaching experiment device, belongs to the technical field of soil leaching, and solves the problem that one Markov bottle can only control one leacheate surface when the height of the leacheate surface is controlled through the Markov bottle in the prior art. The device specifically comprises a Markov bottle, and the Markov bottle is connected with a plurality of soil column barrels through communicating pipelines; the soil column barrel is filled with a soil sample, and the surface layer of the soil sample is filled with leacheate; the bottom of each soil column barrel is connected with a lifting device. According to the utility model, when the height of the liquid level in one soil column barrel is controlled, the height of the soil column barrel is adjusted through the lifting device, and the height of the liquid level in the soil column barrel is always kept constant relative to the ground under the control of the Markov bottle; when the height of the soil column barrel changes, the liquid level height of the surface of the soil sample in the soil column barrel also changes; the effect that one Markov bottle is adopted to control the heights of multiple liquid levels at the same time is achieved, the using number of experimental instruments is reduced, and the experimental cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of soil leaching experiments, in particular to a leaching experiment device with parallel multi-head regulation. Background Art

[0002] The soil column leaching test mainly simulates the leaching process of pollutants in soil under the conditions of rainwater or groundwater flow, quantitatively analyzes the release rate, total amount of pollutants and the composition of the leachate, and then evaluates the mobility and bioavailability of pollutants in soil; the soil column leaching test is crucial for environmental risk assessment, pollution site remediation strategy formulation, etc. When conducting a soil column leaching experiment, a Mariotte bottle is usually required. A Mariotte bottle is an instrument commonly used in leaching experiments to control the height of the water layer. In the experiment, the height of the lower end of the air outlet pipe in the Mariotte bottle can be adjusted to control the liquid level height of the leaching solution, so as to simulate different head pressure conditions.

[0003] However, in the existing leaching experiments, one Mariotte bottle can only control the liquid level height inside one soil column barrel. When multiple leaching experiments are carried out synchronously, the same number of Mariotte bottles as the number of experimental groups is required, and each Mariotte bottle controls one liquid level height separately. This experimental method requires a large number of Mariotte bottles, occupies a large area for the experiment, and the erection process of the leaching device is cumbersome, resulting in low experimental efficiency. Therefore, the utility model provides a leaching experiment device that can control the liquid level height of multiple groups through one Mariotte bottle. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a leaching experiment device with parallel multi-head regulation, which solves the problem that one Mariotte bottle can only control one leaching liquid level when controlling the leaching liquid level height by a Mariotte bottle in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A leaching experiment device with parallel multi-head regulation includes a Mariotte bottle, and the Mariotte bottle is connected to a plurality of soil column barrels through a communication pipeline; soil samples are filled in the soil column barrels, and a leaching solution is arranged on the surface layer of the soil samples; a lifting device is connected to the bottom of each soil column barrel.

[0007] In this solution, a Mariotte bottle is connected to several soil column barrels through a connecting pipeline. By adjusting the height of the lower opening of the air outlet pipe in the Mariotte bottle, the liquid level height of the leaching solution in several soil column barrels can be controlled to rise and fall simultaneously, and the liquid level height inside each soil column barrel is the same relative to the ground. When it is necessary to separately control the liquid level height inside one of the soil column barrels, the lifting device corresponding to the lower part of the soil column barrel is adjusted to adjust the height of the soil column barrel. Since the liquid level height inside the soil column barrel remains constant relative to the ground under the control of the Mariotte bottle, when the height of the soil column barrel changes, the liquid level height of the leaching solution on the surface of the soil sample inside it also changes accordingly, thereby simulating different head pressure conditions. This leaching experiment device uses one Mariotte bottle to simultaneously control the liquid level height inside multiple soil column barrels, saving the number of experimental instruments used and improving the erection efficiency of the experimental device.

[0008] Furthermore, the lifting device includes a tray, and the soil column barrel is carried in the groove at the top of the tray; a threaded pipe is connected to the bottom of the tray, and the bottom of the threaded pipe is threadedly connected inside the threaded sleeve; the bottom of the threaded sleeve is fixed on the soil column base.

[0009] In this solution, by rotating the tray, the tray drives the threaded pipe to rotate relative to the threaded sleeve, thereby adjusting the lifting of the tray, and the tray supports the soil column barrel to lift and lower synchronously; this design has a simple device and is convenient for adjusting the height of the soil column barrel.

[0010] Furthermore, the inside of the groove of the tray is in a funnel structure, and a liquid outlet hole is opened in the middle of the funnel structure; the liquid outlet hole is communicated with the inside of the threaded pipe; a liquid outlet flow channel is opened inside the soil column base, and the liquid outlet flow channel is communicated with the inside of the threaded sleeve.

[0011] In this solution, the leaching solution after leaching the soil sample flows from the soil column barrel into the tray, then flows into the threaded pipe through the liquid outlet hole in the middle of the tray, and then flows out from the liquid outlet flow channel after passing through the threaded sleeve. A receiving bottle is used to collect the flowing leaching solution; the design of the threaded pipe and the threaded sleeve can not only adjust the height of the soil column barrel but also realize the recovery of the leaching solution.

[0012] Furthermore, a filter screen is provided in the liquid outlet flow channel inside the soil column base.

[0013] In this solution, setting the filter screen can remove the suspended solids in the leaching solution to ensure that the collected leaching solution is clear.

[0014] Furthermore, the bottom of the threaded sleeve is tapped with an external thread, and the threaded sleeve is fixed on the soil column base through the external thread; the external thread of the threaded sleeve is opposite to the external thread direction of the threaded pipe.

[0015] In this solution, with this design, when rotating the threaded pipe, it can prevent the threaded sleeve from rotating relative to the soil column base, thereby avoiding the loosening of the connection between the threaded sleeve and the soil column base when adjusting the height of the tray.

[0016] Further, a rotating nut is provided on the outer wall of the threaded sleeve.

[0017] In this solution, the threaded sleeve can be tightly screwed onto the soil column base through the rotating nut.

[0018] Further, an iron stand is connected to the bottom of the Mariotte bottle, and a fixing component is connected between the iron stand and the soil column barrel.

[0019] In this solution, the fixing component can ensure the stability of the soil column barrel and prevent the soil column barrel from tipping over.

[0020] Further, the fixing component includes a fixing rod. One end of the fixing rod close to the soil column barrel is connected with a fixing ring. The fixing ring is sleeved outside the soil column barrel, and a plurality of reinforcing bolts are provided on the fixing ring. One end of the fixing rod close to the iron stand is connected with a fixing clip. An opening is provided on the side of the fixing clip. The iron stand passes through the opening on the side of the fixing clip and is located in the middle of the fixing clip. Reinforcing bolts are provided on the fixing clip.

[0021] In this solution, by rotating the reinforcing bolts on the fixing ring, the soil column barrel can be clamped inside the fixing ring; by rotating the reinforcing bolts on the fixing clip, the iron stand can be fixed inside the fixing clip. When adjusting the height of the soil column barrel, the reinforcing bolts on the fixing ring can be loosened, and then tightened after adjustment, which is convenient for adjustment.

[0022] The beneficial effects of the present utility model are:

[0023] In the elution experiment device with parallel multi-head adjustment provided by the present utility model, one Mariotte bottle is used to control the height of the elution liquid surface inside multiple soil column barrels, reducing the number of Mariotte bottles used, and also reducing the workload and difficulty of setting up the experimental device, and improving the experimental efficiency.

[0024] The elution experiment device with parallel multi-head adjustment provided by the present utility model realizes the adjustment of the height of the water layer on the surface of the soil sample inside the soil column barrel under the condition that the height of the liquid surface inside the soil column barrel remains unchanged relative to the ground through the lifting devices at the bottoms of the respective soil column barrels, and the operation is simple; and the threaded pipe and the threaded sleeve are screwed together, which can realize continuous adjustment of the height of the tray, with relatively high adjustment accuracy and reducing the difficulty of water head control in the experiment. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of an elution experiment device with parallel multi-head adjustment of the present utility model;

[0026] Figure 2 It is a schematic sectional structural diagram of an elution experiment device with parallel multi-head adjustment of the present utility model.

[0027] Reference Signs:

[0028] 1. Mariotte bottle; 2. Soil column barrel; 3. Connecting pipeline; 4. Lifting device; 41. Tray; 42. Threaded pipe; 43. Threaded sleeve; 44. Soil column base; 45. Filter screen; 46. Rotating nut; 5. Iron stand; 6. Fixing component; 61. Fixing rod; 62. Fixing ring; 63. Reinforcing bolt; 64. Fixing clip; Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. The following describes the specific implementation manners of the present utility model to facilitate those skilled in the art of this technical field to understand the present utility model. However, it should be clear that the present utility model is not limited to the scope of the specific implementation manners. For those of ordinary skill in the art of this technical field, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present utility model are within the scope of protection.

[0030] As Figure 1 and Figure 2 shown, this embodiment provides a leaching experiment device with parallel multi-head regulation. This leaching experiment device uses a Mariotte bottle 1 to control the height of the leaching liquid level inside multiple soil column barrels 2, reducing the number of Mariotte bottles used when multiple groups of leaching experiments are carried out simultaneously and reducing the experimental difficulty. Specifically, it includes:

[0031] Mariotte bottle 1, connecting pipeline 3, soil column barrel 2 and lifting device 4;

[0032] Among them, the Mariotte bottle 1 is connected to a plurality of soil column barrels 2 through the connecting pipeline 3; the soil column barrel 2 is filled with a soil sample, and a leaching solution is installed on the surface layer of the soil sample. By adjusting the height of the lower opening of the air outlet pipe in the Mariotte bottle 1, the height of the leaching liquid level on the surface layer of the soil sample in a plurality of soil column barrels 2 can be simultaneously controlled to rise and fall, and the liquid level height inside each soil column barrel 2 is the same relative to the ground. A lifting device 4 is connected to the bottom of each soil column barrel 2; when it is necessary to separately control the height of the leaching liquid level on the surface layer of the soil sample inside one of the soil column barrels 2, the corresponding lifting device 4 below the soil column barrel 2 is adjusted to adjust the height of the soil column barrel 2. Since the liquid level height inside the soil column barrel 2 remains constant relative to the ground under the control of the Mariotte bottle 1, when the height of the soil column barrel 2 changes, the height of the leaching liquid level on the surface layer of the soil sample inside it changes, thereby simulating different head pressure conditions; this leaching experiment device uses one Mariotte bottle 1 to simultaneously control the liquid level height inside multiple soil column barrels 2, saving the number of experimental instruments used and improving the erection efficiency of the experimental device.

[0033] Preferably in this embodiment, the connecting pipeline 3 can be a parallel pipeline with multiple branches; at the branched end of the parallel pipeline, each branch is respectively connected to each soil column barrel 2, and the parallel end of the parallel pipeline is connected to the Mariotte bottle 1. As another implementation manner of this embodiment, the connecting pipeline 3 can also be multiple independent pipelines; a plurality of communication holes are opened at the bottom of the Mariotte bottle 1, and each communication hole and each soil column barrel 2 can be connected through an independent pipeline.

[0034] The lifting device 4 includes a tray 41, a threaded pipe 42, a threaded sleeve 43 and a soil column base 44. The soil column barrel 2 is carried in the groove at the top of the tray 41; the bottom of the tray 41 is connected with a threaded pipe 42, and the bottom of the threaded pipe 42 is threadedly connected in the threaded sleeve 43; the bottom of the threaded sleeve 43 is fixed on the soil column base 44; by rotating the tray 41, the tray 41 drives the threaded pipe 42 to rotate relative to the threaded sleeve 43, thereby adjusting the lifting of the tray 41, and the tray 41 supports the soil column barrel 2 to lift and lower synchronously; the design of this device is simple and it is convenient to adjust the height of the soil column barrel 2.

[0035] The inside of the groove of the tray 41 is in a funnel structure, and a liquid outlet hole is opened in the middle of the funnel structure; the liquid outlet hole is communicated with the inside of the threaded pipe 42; a liquid outlet flow channel is opened inside the soil column base 44, and the liquid outlet flow channel is communicated with the inside of the threaded sleeve 43; the leaching solution after washing the soil sample flows from the soil column barrel 2 into the tray 41, then flows into the threaded pipe 42 through the liquid outlet hole in the middle of the tray 41, and then flows out from the liquid outlet flow channel after passing through the threaded sleeve 43, and a receiving bottle is used to collect the flowing leaching solution; the design of the threaded pipe 42 and the threaded sleeve 43 can not only realize the adjustment of the height of the soil column barrel 2, but also realize the recovery of the leaching solution.

[0036] A filter screen 45 is provided in the liquid outlet flow channel inside the soil column base 44; the filter screen 45 can remove suspended solids in the leaching solution to ensure that the collected leaching solution is clear.

[0037] External threads are tapped at the bottom of the threaded sleeve 43, and the threaded sleeve 43 is fixed on the soil column base 44 through the external threads; the external threads of the threaded sleeve 43 are opposite to the external threads of the threaded pipe 42; this design can prevent the threaded sleeve 43 from rotating relative to the soil column base 44 when the threaded pipe 42 is rotated, thereby avoiding the loosening of the connection between the threaded sleeve 43 and the soil column base 44 when adjusting the height of the tray 41.

[0038] A rotating nut 46 is provided on the outer wall of the threaded sleeve 43; the threaded sleeve 43 can be tightly screwed on the soil column base 44 through the rotating nut 46.

[0039] A iron stand 5 is connected to the bottom of the Mariotte bottle 1, and a fixing component 6 is connected between the iron stand 5 and the soil column barrel 2; the fixing component 6 can ensure the stability of the soil column barrel 2 and prevent the soil column barrel 2 from tipping over.

[0040] The fixing component 6 includes a fixing rod 61. One end of the fixing rod 61 close to the soil column barrel 2 is connected with a fixing ring 62. The fixing ring 62 is sleeved outside the soil column barrel 2, and a plurality of reinforcing bolts 63 are arranged on the fixing ring 62. One end of the fixing rod 61 close to the iron stand 5 is connected with a fixing clip 64. The side of the fixing clip 64 is provided with an opening. The iron stand 5 passes through the opening on the side of the fixing clip 64 and is located in the middle of the fixing clip 64. The fixing clip 64 is provided with a reinforcing bolt 63. Rotating the reinforcing bolt 63 on the fixing ring 62 can clamp the soil column barrel 2 inside the fixing ring 62. Rotating the reinforcing bolt 63 on the fixing clip 64 can fix the iron stand 5 inside the fixing clip 64. When adjusting the height of the soil column barrel 2, the reinforcing bolt 63 on the fixing ring 62 can be loosened, and after adjustment, the reinforcing bolt 63 can be tightened again, which is convenient for adjustment. The number of the fixing rods 61 and the fixing clips 64 corresponds to the number of the soil column barrels, Figure 1 Only two fixing rods 61 are shown in the figure.

[0041] The fixing clip 64 can also be replaced by a conventional test tube clip in the laboratory.

[0042] The working principle of this embodiment is as follows:

[0043] When performing a leaching experiment with the parallel multi-head adjustable leaching experiment device of this embodiment, multiple groups of soil column barrels 2 perform leaching experiments simultaneously. The leaching solution inside the soil column barrel 2 passes through the soil sample to leach it. After leaching, it flows into the tray 41 from the bottom of the soil column barrel 2, and then flows into the threaded tube 42 through the liquid outlet hole in the middle of the tray 41, and then flows through the threaded tube 42 into the threaded sleeve 43, and finally flows out from the liquid outlet channel. The leaching solution flowing out can be collected with a receiving bottle.

[0044] When controlling the liquid level height of the leaching solution on the surface of the soil sample inside one of the soil column barrels 2, rotate the corresponding tray 41 below the soil column barrel 2. The tray 41 drives the threaded tube 42 to rotate relative to the threaded sleeve 43, thereby adjusting the lifting of the tray 41. The tray 41 supports the soil column barrel 2 to lift and lower synchronously. Since the liquid level height inside the soil column barrel 2 is always kept constant relative to the ground under the control of the Mariotte bottle 1, when the height of the soil column barrel 2 changes, the liquid level height of the leaching solution on the surface of the soil sample inside it also changes relative to the soil sample, so as to achieve the purpose of controlling the liquid level height inside a single soil column barrel 2. For example, if it is necessary to control the liquid level height of the leaching solution on the surface of the soil sample inside the soil column barrel 2 to rise by a, it is necessary to rotate the tray 41 to make the height of the soil column barrel 2 drop by a. At this time, under the regulation of the Mariotte bottle 1, the liquid level height of the leaching solution inside the soil column barrel 2 remains unchanged relative to the ground, so the liquid level height of the leaching solution on the surface of the soil sample inside the soil column barrel 2 rises by a; vice versa.

[0045] Those of ordinary skill in the art will realize that the embodiments herein are provided to assist the reader in understanding the principles of the present utility model, and it should be understood that the scope of protection of the present utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations that do not depart from the essence of the present utility model based on these technical revelations disclosed in the present utility model, and these deformations and combinations are still within the scope of protection of the utility model.

Claims

1. A rinsing experimental device with parallel multi-head regulation, characterized in that: The invention comprises a Malvern flask (1), wherein the Malvern flask (1) is connected to a plurality of soil column barrels (2) via a connecting pipe (3); the soil column barrels (2) are filled with soil samples, and the surface of the soil samples is filled with eluent; and the bottom of each soil column barrel (2) is connected to a lifting device (4).

2. The elution experiment device with parallel multi-head regulation according to claim 1, characterized in that: The lifting device (4) comprises a tray (41), and the soil column barrel (2) is carried in a groove at the top of the tray (41); the bottom of the tray (41) is connected to a threaded pipe (42), and the bottom of the threaded pipe (42) is threadedly connected in a threaded sleeve (43); the bottom of the threaded sleeve (43) is fixed on the soil column base (44).

3. The elution experiment device with parallel multi-head regulation according to claim 2, characterized in that: The interior of the groove of the tray (41) is in a funnel structure, with a liquid outlet opening in the middle of the funnel structure; the liquid outlet opening is communicated with the interior of the threaded pipe (42); a liquid outlet channel is opened inside the soil column base (44), and the liquid outlet channel is communicated with the interior of the threaded sleeve (43).

4. The elution experiment device with parallel multi-head regulation according to claim 3, characterized in that: A filter screen (45) is provided in the liquid outlet channel in the soil column base (44).

5. The elution experiment device with parallel multi-head regulation according to claim 2, characterized in that: The bottom of the threaded sleeve (43) is tapped with an external thread, and the threaded sleeve (43) is fixed to the soil column base (44) through the external thread; the external thread of the threaded sleeve (43) is in the opposite direction to the external thread of the threaded pipe (42).

6. The parallel multi-head regulated elution experimental device according to claim 5, characterized in that: The outer wall of the threaded sleeve (43) is provided with a rotating nut (46).

7. The parallel multi-head regulated elution experimental device according to claim 1 is characterized in that: The bottom of the Malchnitz flask (1) is connected to an iron frame (5), and a fixing component (6) is connected between the iron frame (5) and the soil column barrel (2).

8. The elution experiment device with parallel multi-head regulation according to claim 7, characterized in that: The fixing assembly (6) comprises a fixing rod (61), one end of the fixing rod (61) close to the soil column barrel (2) is connected to a fixing ring (62), the fixing ring (62) is sleeved outside the soil column barrel (2), and a plurality of reinforcing bolts (63) are provided on the fixing ring (62); one end of the fixing rod (61) close to the iron frame (5) is connected to a fixing clamp (64), an opening is provided on the side of the fixing clamp (64), the iron frame (5) passes through the opening on the side of the fixing clamp (64) and is located in the middle of the fixing clamp (64), and the fixing clamp (64) is provided with a reinforcing bolt (63).

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