Soil saturated hydraulic conductivity measuring device

Abstract

The utility model provides a soil saturated hydraulic conductivity measuring device, which belongs to the technical field of soil saturated hydraulic conductivity, and comprises a workbench, a height adjusting mechanism, a Markov bottle and a water segregator, the top of the workbench is fixedly provided with the height adjusting mechanism, the top of the height adjusting mechanism is fixedly provided with the Markov bottle, and the right side of the Markov bottle is fixedly provided with the water segregator. The water distributor comprises a circular main pipe, a water inlet, an opening end, a sealing cover, a water distribution branch pipe, an adjusting valve, a sealing ring, an upper supporting plate, a lower supporting plate, a mounting groove, a first fixing hole, a first fixing screw and a fastening nut. The square supporting plates are mounted on the upper side and the lower side of the circular main pipe, so that the water segregator is more convenient and firmer to mount, the problem that the circular main pipe is inconvenient to fix is solved, displacement or inclination of the water segregator in the testing process is avoided, the smoothness of a water flow path is ensured, and the accuracy of a testing result is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil saturated hydraulic conductivity, and particularly relates to a device for measuring soil saturated hydraulic conductivity. Background Technique

[0002] Soil saturated hydraulic conductivity is the amount of water passing through a unit area per unit time under a unit water potential gradient when the soil is saturated with water. It is a function of soil texture, bulk density, and pore distribution characteristics.

[0003] During the measurement of soil saturated hydraulic conductivity, the water separator separates excessive water absorbed by the soil to prevent the main probe from being flooded by water. Currently, the pipeline of the water separator is a circular pipe, which is not convenient for installation and fixation. The inclined pipeline will affect the smoothness of the water flow path, thereby affecting the soil test results. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for measuring soil saturated hydraulic conductivity, aiming to solve the problems proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for measuring soil saturated hydraulic conductivity, comprising: a workbench, a height adjustment mechanism, a Mariotte bottle, and a water separator. The height adjustment mechanism is fixedly installed at the top of the workbench, the Mariotte bottle is fixedly installed at the top of the height adjustment mechanism, the water separator is fixedly installed on the right side of the Mariotte bottle. The water separator includes a circular main pipe, a water inlet, an open end, a sealing cover, a water separation branch pipe, a regulating valve, a sealing ring, an upper support plate, a lower support plate, an installation groove, a first fixing hole, a first fixing screw, and a fastening nut. The circular main pipe is fixedly installed on the right side of the Mariotte bottle, the water inlet is opened at the left end of the circular main pipe, the open end is arranged at the right end of the circular main pipe, the sealing cover is movably installed on the right side of the open end, a plurality of water separation branch pipes are fixedly connected to the front of the circular main pipe, the regulating valve is fixedly installed on the top of the water separation branch pipe, the sealing ring is movably installed at the output end of the water separation branch pipe, the upper support plate is movably installed on the top of the circular main pipe, the lower support plate is fixedly installed at the bottom of the circular main pipe, the installation grooves are respectively opened at the bottom of the upper support plate and the top of the lower support plate, the first fixing holes are respectively opened at the top of the upper support plate and the bottom of the lower support plate, the first fixing screw is movably installed in the inner cavity of the first fixing hole, and two fastening nuts are respectively movably installed at both ends of the first fixing screw.

[0007] As a preferred scheme of the utility model, a second fixing hole is opened on the right side of the sealing cover, and a second fixing screw is movably installed in the inner cavity of the second fixing hole.

[0008] As a preferred embodiment of the present utility model, the Mariotte bottle and the water separator are connected by a water outlet pipe. A water outlet valve is fixedly installed at the top of the water outlet pipe. A water inlet pipe is fixedly installed on the left side of the Mariotte bottle. A water inlet valve is fixedly installed at the top of the water inlet pipe.

[0009] As a preferred embodiment of the present utility model, a exhaust pipe is fixedly installed at the top of the water outlet pipe. An exhaust valve is fixedly installed at the top of the exhaust pipe. A bottle stopper is movably installed at the top of the Mariotte bottle. A stainless steel pipe is inserted into the bottle stopper and extends into the interior of the Mariotte bottle.

[0010] As a preferred embodiment of the present utility model, the height adjustment mechanism includes a lower fixing plate, a hydraulic cylinder, a hydraulic rod, an upper fixing plate, a limiting hole and a limiting rod. The lower fixing plate is fixedly installed on the top of the workbench. The hydraulic cylinder is fixedly installed on the top of the lower fixing plate. The hydraulic rod is fixedly installed on the top of the hydraulic cylinder. The upper fixing plate is fixedly installed on the top of the hydraulic rod. Four limiting holes are respectively opened at the four corners of the top of the upper fixing plate. The limiting rod is fixedly installed in the inner cavity of the limiting hole and penetrates to the top of the lower fixing plate.

[0011] As a preferred embodiment of the present utility model, a core cutter assembly is fixedly installed on the front surface of the water distribution branch pipe. The core cutter assembly includes a connecting pipe, an upper core cutter sleeve, a core cutter body, a filter screen, a lower core cutter sleeve, a locking screw and a drain pipe. One end of the connecting pipe is movably installed on the front surface of the water distribution branch pipe. The upper core cutter sleeve is fixedly installed at the other end of the connecting pipe. The core cutter body is fixedly installed at the bottom of the upper core cutter sleeve. The filter screen is fixedly installed at the bottom of the core cutter body.

[0012] As a preferred embodiment of the present utility model, the lower core cutter sleeve is fixedly installed at the bottom of the filter screen. The locking screw is fixedly installed between the upper core cutter sleeve and the lower core cutter sleeve. The drain pipe is fixedly installed at the bottom of the lower core cutter sleeve. A measuring cup is placed at the bottom of the drain pipe. The inner cavity of the core cutter body is filled with a soil sample.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In this solution, square support plates are installed on the upper and lower sides of the circular main pipe, making the installation of the water separator more convenient and firm, solving the problem that the circular main pipe is not easy to fix, avoiding the displacement or inclination of the water separator during the test, ensuring the smoothness of the water flow path, and guaranteeing the accuracy of the test results. An open end is provided in the circular main pipe, and the open end is sealed by a sealing cover, which is convenient for the staff to clean the circular main pipe after long-term use and avoid pipe blockage. Description of the Drawings

[0015] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0016] In the accompanying drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is an auxiliary view of the water distributor in the structure of the present utility model;

[0019] Figure 3 is a perspective view of the circular main pipe in the structure of the present utility model;

[0020] Figure 4 is an exploded view of a part of the structure of the present utility model;

[0021] Figure 5 is an exploded view of the height adjustment mechanism in the structure of the present utility model;

[0022] Figure 6 is an exploded view of the core cutter assembly in the structure of the present utility model.

[0023] In the figure: 1, workbench; 2, height adjustment mechanism; 201, lower fixing plate; 202, hydraulic cylinder; 203, hydraulic rod; 204, upper fixing plate; 205, limiting hole; 206, limiting rod; 3, Mariotte bottle; 4, water distributor; 401, circular main pipe; 402, water inlet; 403, open end; 404, sealing cover; 405, water distribution branch pipe; 406, regulating valve; 407, sealing ring; 408, upper support plate; 409, lower support plate; 4010, installation groove; 4011, first fixing hole; 4012, first fixing screw; 4013, fastening nut; 5, core cutter assembly; 501, connecting pipe; 502, upper core cutter sleeve; 503, core cutter body; 504, filter screen; 505, lower core cutter sleeve; 506, locking screw; 507, drain pipe; 6, second fixing hole; 7, second fixing screw; 8, water outlet pipe; 9, water outlet valve; 10, water inlet pipe; 11, water inlet valve; 12, exhaust pipe; 13, exhaust valve; 14, bottle stopper; 15, stainless steel pipe; 16, measuring cup. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment

[0026] As Figures 1 to 6 shown, a device for measuring the saturated hydraulic conductivity of soil provided by the utility model comprises: a workbench 1, a height adjusting mechanism 2, a Mariotte bottle 3 and a water distributor 4. A height adjusting mechanism 2 is fixedly installed on the top of the workbench 1, a Mariotte bottle 3 is fixedly installed on the top of the height adjusting mechanism 2, a water distributor 4 is fixedly installed on the right side of the Mariotte bottle 3. The water distributor 4 comprises a circular main pipe 401, a water inlet 402, an open end 403, a sealing cover 404, a water distribution branch pipe 405, a regulating valve 406, a sealing ring 407, an upper support plate 408, a lower support plate 409, an installation groove 4010, a first fixing hole 4011, a first fixing screw 4012 and a fastening nut 4013. The circular main pipe 401 is fixedly installed on the right side of the Mariotte bottle 3, the water inlet 402 is opened at the left end of the circular main pipe 401, the open end 403 is arranged at the right end of the circular main pipe 401, the sealing cover 404 is movably installed on the right side of the open end 403, a plurality of water distribution branch pipes 405 are fixedly connected to the front of the circular main pipe 401, the regulating valve 406 is fixedly installed on the top of the water distribution branch pipe 405, the sealing ring 407 is movably installed at the output end of the water distribution branch pipe 405, the upper support plate 408 is movably installed on the top of the circular main pipe 401, the lower support plate 409 is fixedly installed on the bottom of the circular main pipe 401, the installation groove 4010 is respectively opened at the bottom of the upper support plate 408 and the top of the lower support plate 409, the first fixing hole 4011 is respectively opened at the top of the upper support plate 408 and the bottom of the lower support plate 409, the first fixing screw 4012 is movably installed in the inner cavity of the first fixing hole 4011, and two fastening nuts 4013 are respectively movably installed at both ends of the first fixing screw 4012.

[0027] Reference Figure 1 、 Figure 4 and Figure 5, a second fixing hole 6 is provided on the right side of the sealing cover 404. A second fixing screw 7 is movably installed in the inner cavity of the second fixing hole 6. The Marriotte bottle 3 and the water separator 4 are connected through a water outlet pipe 8. A water outlet valve 9 is fixedly installed at the top of the water outlet pipe 8. A water inlet pipe 10 is fixedly installed on the left side of the Marriotte bottle 3. A water inlet valve 11 is fixedly installed at the top of the water inlet pipe 10. An exhaust pipe 12 is fixedly installed at the top of the water outlet pipe 8. An exhaust valve 13 is fixedly installed at the top of the exhaust pipe 12. A bottle stopper 14 is movably installed at the top of the Marriotte bottle 3. A stainless steel pipe 15 is inserted into the bottle stopper 14 and extends into the Marriotte bottle 3. The height adjustment mechanism 2 includes a lower fixing plate 201, a hydraulic cylinder 202, a hydraulic rod 203, an upper fixing plate 204, a limiting hole 205 and a limiting rod 206. The lower fixing plate 201 is fixedly installed on the top of the workbench 1. The hydraulic cylinder 202 is fixedly installed on the top of the lower fixing plate 201. The hydraulic rod 203 is fixedly installed on the top of the hydraulic cylinder 202. The upper fixing plate 204 is fixedly installed on the top of the hydraulic rod 203. Four limiting holes 205 are respectively opened at the four corners of the top of the upper fixing plate 204. The limiting rod 206 is fixedly installed in the inner cavity of the limiting hole 205 and penetrates to the top of the lower fixing plate 201.

[0028] With the above solution: through the setting of the height adjustment mechanism 2, it is convenient to adjust the height of the Marriotte bottle 3 to make the water head height an accurate value and obtain a constant water pressure.

[0029] Reference Figure 1 , Figure 2 and Figure 6 , a core cutter assembly 5 is fixedly installed on the front of the water distribution branch pipe 405. The core cutter assembly 5 includes a connecting pipe 501, an upper core cutter sleeve 502, a core cutter body 503, a filter screen 504, a lower core cutter sleeve 505, a locking screw 506 and a drain pipe 507. One end of the connecting pipe 501 is movably installed on the front of the water distribution branch pipe 405. The upper core cutter sleeve 502 is fixedly installed at the other end of the connecting pipe 501. The core cutter body 503 is fixedly installed at the bottom of the upper core cutter sleeve 502. The filter screen 504 is fixedly installed at the bottom of the core cutter body 503. The lower core cutter sleeve 505 is fixedly installed at the bottom of the filter screen 504. The locking screw 506 is fixedly installed between the upper core cutter sleeve 502 and the lower core cutter sleeve 505. The drain pipe 507 is fixedly installed at the bottom of the lower core cutter sleeve 505. A measuring cup 16 is placed at the bottom of the drain pipe 507. The inner cavity of the core cutter body 503 is filled with a soil sample.

[0030] With the above solution: through the setting of the locking screw 506, the upper core cutter sleeve 502 and the lower core cutter sleeve 505 can be sleeved on the outside of the core cutter body 503 to ensure the accuracy of the measurement.

[0031] Working principle: During use, connect the Mariotte bottle 3 and the water divider 4. Fix the upper support plate 408 and the lower support plate 409 to the outside of the circular main pipe 401 through the first fixing screw 4012, so as to facilitate the fixation of the circular main pipe 401. Then close the water outlet valve 9 of the Mariotte bottle 3, open the exhaust valve 13, inject tap water from the water inlet pipe 10, and discharge the gas inside the Mariotte bottle 3 and the water divider 4. Then close the water inlet valve 11 and the exhaust valve 13. Finally, adjust the water head to near the predetermined height through the stainless steel pipe 15. Place the core cutter body 503 containing the soil sample into the lower core cutter sleeve 505, adjust the height of the Mariotte bottle 3 through the height adjustment mechanism 2 to make the water head height an accurate value and obtain a constant water pressure. Sleeve the upper core cutter sleeve 502 on the top of the core cutter body 503, and fix the upper core cutter sleeve 502 and the lower core cutter sleeve 505 together through the locking screw 506. Connect the core cutter assembly 5 and the water distribution branch pipe 405 of the water divider 4 through the connecting pipe 501, open the regulating valve 406, and finally observe and record the water output in the measuring cup 16, and calculate the saturated hydraulic conductivity of the soil through the formula.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soil saturated hydraulic conductivity measuring device, characterized in that: include: A workbench (1), a height adjustment mechanism (2), a Martens flask (3) and a water distributor (4), wherein the top of the workbench (1) is fixedly mounted with the height adjustment mechanism (2), the top of the height adjustment mechanism (2) is fixedly mounted with the Martens flask (3), the right side of the Martens flask (3) is fixedly mounted with the water distributor (4), and the water distributor (4) comprises a circular main pipe (401), a water inlet (402), an open end (403), a sealing cover (404), a water distribution branch pipe (405), A regulating valve (406), a sealing ring (407), an upper support plate (408), a lower support plate (409), a mounting groove (4010), a first fixing hole (4011), a first fixing screw (4012) and a fastening nut (4013); the circular main pipe (401) is fixedly mounted on the right side of the Martens flask (3); the water inlet (402) is opened at the left end of the circular main pipe (401); the opening end (403) is arranged at the right end of the circular main pipe (401); The sealing cover (404) is movably mounted on the right side of the opening end (403); the plurality of water branch pipes (405) are fixedly connected to the front side of the circular main pipe (401); the regulating valve (406) is fixedly mounted on the top of the water branch pipe (405); the sealing ring (407) is movably mounted on the output end of the water branch pipe (405); the upper support plate (408) is movably mounted on the top of the circular main pipe (401); and the lower support plate (409) is fixedly mounted on the circular main pipe (401). 01), the mounting groove (4010) is respectively opened at the bottom of the upper support plate (408) and the top of the lower support plate (409), the first fixing hole (4011) is respectively opened at the top of the upper support plate (408) and the bottom of the lower support plate (409), the first fixing screw (4012) is movably installed in the inner cavity of the first fixing hole (4011), and the two fastening nuts (4013) are respectively movably installed at the two ends of the first fixing screw (4012).

2. A soil saturated hydraulic conductivity measuring device according to claim 1, characterized in that: A second fixing hole (6) is provided on the right side of the sealing cover (404), and a second fixing screw (7) is movably mounted in the inner cavity of the second fixing hole (6).

3. A soil saturated hydraulic conductivity measuring device according to claim 1, characterized in that: The Martens flask (3) and the water distributor (4) are connected via a water outlet pipe (8), a water outlet valve (9) is fixedly mounted on the top of the water outlet pipe (8), a water inlet pipe (10) is fixedly mounted on the left side of the Martens flask (3), and a water inlet valve (11) is fixedly mounted on the top of the water inlet pipe (10).

4. A soil saturated hydraulic conductivity measuring device according to claim 3, characterized in that: An exhaust pipe (12) is fixedly mounted on the top of the water outlet pipe (8), an exhaust valve (13) is fixedly mounted on the top of the exhaust pipe (12), a bottle stopper (14) is movably mounted on the top of the Martens flask (3), and a stainless steel pipe (15) is inserted into the bottle stopper (14) and extends into the interior of the Martens flask (3).

5. A soil saturated hydraulic conductivity measuring device according to claim 1, characterized in that: The height adjustment mechanism (2) comprises a lower fixing plate (201), a hydraulic cylinder (202), a hydraulic rod (203), an upper fixing plate (204), a limiting hole (205) and a limiting rod (206); the lower fixing plate (201) is fixedly mounted on the top of the workbench (1); the hydraulic cylinder (202) is fixedly mounted on the top of the lower fixing plate (201); the hydraulic rod (203) is fixedly mounted on the top of the hydraulic cylinder (202); the upper fixing plate (204) is fixedly mounted on the top of the hydraulic rod (203); four limiting holes (205) are respectively arranged at four corners of the top of the upper fixing plate (204); and the limiting rod (206) is fixedly mounted in the inner cavity of the limiting hole (205) and passes through the top of the lower fixing plate (201).

6. A soil saturated hydraulic conductivity measuring device according to claim 1, characterized in that: A ring knife assembly (5) is fixedly mounted on the front of the water branch pipe (405), and the ring knife assembly (5) comprises a connecting pipe (501), an upper ring knife sleeve (502), a ring knife body (503), a filter screen (504), a lower ring knife sleeve (505), a locking screw (506) and a drainage pipe (507). One end of the connecting pipe (501) is movably mounted on the front of the water branch pipe (405), the upper ring knife sleeve (502) is fixedly mounted on the other end of the connecting pipe (501), the ring knife body (503) is fixedly mounted on the bottom of the upper ring knife sleeve (502), and the filter screen (504) is fixedly mounted on the bottom of the ring knife body (503).

7. A soil saturated hydraulic conductivity measuring device according to claim 6, characterized in that: The lower ring knife sleeve (505) is fixedly mounted on the bottom of the filter screen (504), the locking screw (506) is fixedly mounted between the upper ring knife sleeve (502) and the lower ring knife sleeve (505), the drainage pipe (507) is fixedly mounted on the bottom of the lower ring knife sleeve (505), a measuring cup (16) is placed at the bottom of the drainage pipe (507), and the inner cavity of the ring knife body (503) is filled with a soil sample.

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