High-precision test pit water injection test device

Abstract

The invention discloses a high-precision test pit water injection test device, and belongs to the technical field of test pit water injection. A high-precision test pit water injection test device comprises a soil insertion frame, sliding grooves are formed in the outer walls of the two sides of the soil insertion frame, sliding blocks are slidably installed on the sliding grooves, supporting blocks are welded to the sliding blocks, supports are welded to the two sides of the end face of the top of the soil insertion frame, vertical rods are arranged on the supports, first external threads are arranged on the outer walls of the vertical rods, and first external threads are arranged on the outer walls of the vertical rods. The vertical rod is connected with the support through a first external thread, a disc is installed on one side of the support through a rotating shaft, a second external thread is arranged on the outer wall of the disc, and the vertical rod and the disc are connected through the first external thread and the second external thread. The problems that in the prior art, a fixing structure for the measuring outer ring is lacked, so that when the measuring outer ring is inserted into soil, it cannot be guaranteed that the measuring outer ring is vertically inserted into the soil, and if the measuring outer ring inclines, the test accuracy of a test pit water injection test is affected are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of test pit water injection, and in particular to a test pit water injection test device with high accuracy. Background Art

[0002] The water injection test refers to injecting water into a borehole or test pit, and determining the permeability coefficient of the target layer medium by regularly measuring the injection volume, time, water level and other related parameters. The water injection test is mainly suitable for loose strata, especially in soil layers with deep groundwater levels and dry soil layers.

[0003] A Chinese patent discloses a permeability coefficient test device and method, with the publication number CN115575299A. The article proposes "including a measuring inner ring, a measuring outer ring, and a water injection measuring mechanism; the measuring inner ring and the measuring outer ring are coaxially arranged, and the height of the measuring inner ring is not less than the height of the measuring outer ring; the water injection measuring mechanism is arranged on the measuring inner ring; the outer ring water injection pipe body of the water injection measuring mechanism is connected to the outer ring measuring groove between the measuring inner ring and the measuring outer ring; the inner ring water injection pipe body of the water injection measuring mechanism is connected to the inner ring measuring groove in the measuring inner ring". This method can quickly realize the installation of the water injection measuring mechanism, improve the efficiency of the test, and effectively avoid the influence of the subsequent measurement results caused by the complex structure and installation method. In addition, the difference in the height of the measuring inner ring and the measuring outer ring can facilitate direct observation of the water level in the outer ring measuring groove and the inner ring measuring groove, avoiding the situation where the obstruction of observation affects the results of the test and causes deviations in the measurement results.

[0004] However, the prior art lacks a fixing structure for the measuring outer ring when in use, resulting in the inability to ensure that the measuring outer ring is vertically inserted into the soil when inserted into the soil. If the measuring outer ring is tilted, it will affect the test accuracy of the test pit water injection test. Therefore, it is necessary to design a test pit water injection test device with high accuracy. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing design cannot ensure that the measuring outer ring is vertically inserted into the soil, and the measuring outer ring is tilted, which will affect the test accuracy of the test pit water injection test.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The cam is provided with a plurality of sliding grooves, and a sliding block is slidably mounted on the sliding grooves, and a support block is welded on the sliding block, and brackets are welded on both sides of the top end surface of the soil insertion frame, and a vertical rod is provided on the bracket, and the outer wall of the vertical rod is provided with a first external thread, and the vertical rod is connected to the bracket through the first external thread, a disc is installed on one side of the bracket through a rotating shaft, and the outer wall of the disc is provided with a second external thread, and the vertical rod and the disc are connected through the first external thread and the second external thread, a first gear is welded on the top of the disc, and a second gear is meshed on one side of the first gear, and a screw handle is provided on the top of the second gear, a contraction groove is provided at the bottom of the soil insertion frame, and an annular plug plate is inserted in the inside of the contraction groove, the bottom of the first gear is connected to the top of the soil insertion frame through a rotating shaft, a water injection cylinder is provided above the top of the soil insertion frame, and the bottoms of the soil insertion frame and the annular plug plate are both blade-shaped.

[0007] Preferably, two limit openings are provided on the outer walls at both ends of the soil insertion frame, movable openings are provided on the outer walls at both ends of the soil insertion frame, and one end of the limit opening is connected to the movable opening, and limit blocks are welded on the outer walls at both ends of the annular plug plate, and one end of the limit block extends into the limit opening.

[0008] Preferably, a scale groove is provided on one side of the slide groove.

[0009] Preferably, a pair of brackets are welded to the top of the soil insertion frame, and the bottom of the water injection cylinder is fitted with the top of the bracket. A test frame is provided inside the soil insertion frame, and the top of the test frame is welded and fixed to the bottom of the bracket. The test frame is located below the bottom of the water injection cylinder.

[0010] Preferably, a mounting port is provided at the top of the water injection cylinder, and a rubber block is clamped inside the mounting port, a ventilation pipe is fused to the center of the rubber block, and an air valve is provided on the top of the ventilation pipe, a water inlet pipe is fused to the rubber block, and a liquid inlet bucket is fused to one end of the water inlet pipe.

[0011] Preferably, the inner wall of the mounting port is provided with two sealing grooves, the outer wall of the rubber block is glued with two sealing gaskets, and the two sealing gaskets are respectively clamped in the two sealing grooves, the interior of the liquid inlet hopper is glued with a first sealing block, the top of the liquid inlet hopper is screwed with a spring telescopic rod, and the telescopic end of the spring telescopic rod is installed with a circular plate through a rotating shaft, one end of the circular plate is glued with a second sealing block, and the other end of the circular plate is welded with a pull block.

[0012] Preferably, the first sealing block and the second sealing block are both made of rubber material, and the first sealing block and the second sealing block are both stepped.

[0013] Preferably, a drain port is provided at the bottom of the water injection cylinder, and an internal threaded tube is welded to the bottom of the drain port, a drain pipe is threadedly installed at the bottom of the internal threaded tube, a top rod is welded inside the drain port, sealing plates are glued around the inner wall of the drain pipe, and four sealing plates are combined into a circle.

[0014] Preferably, an observation port is provided on the outer wall of the water injection cylinder, and a scale bar is provided on one side of the observation port.

[0015] 1. The present invention can drive the first gear to rotate by rotating the handle. When the first gear rotates, it will drive the disc to rotate. Under the action of the first external thread and the second external thread, the vertical rod can push the support block to move downward, and the bottom of the support block can be fitted with the soil surface to form a support for the soil insertion frame. At the same time, the soil insertion frame can be kept vertical to the soil, which is beneficial to ensuring the accuracy of the test pit water injection test. By rotating the annular plug plate, the limit block can be moved to the moving port, and the annular plug plate can be moved outward from the contraction groove. When the limit block moves to the bottom of the moving port, the annular plug plate is rotated again, so that the limit block can be stuck in the limit port, thereby fixing the position of the annular plug plate and pressing the soil insertion frame, so that the bottom of the annular plug plate and the soil insertion frame are inserted into the soil. The bottom of the annular plug plate and the soil insertion frame are in the shape of a knife blade, which is beneficial to breaking the soil and facilitating the insertion of the equipment into the soil, providing convenience for installation work.

[0016] 2. The distance that the soil insertion frame penetrates into the soil plus the length of the annular plug plate can be checked through the scale groove, so as to determine the depth of the water injection test. By pulling the pull block, the spring telescopic rod is extended, and the circular plate is rotated to align the first sealing block and the second sealing block. After loosening the pull block, the first sealing block will be inserted into the liquid inlet hopper and fit tightly with the second sealing block to avoid air leakage and affect the test accuracy. By rotating the air valve, the gas at the vent pipe can be controlled to enter the water injection cylinder. The sealing groove and the sealing gasket can be used to increase the sealing performance at the installation port. By rotating the drain pipe to move it upward on the internal threaded pipe, the push rod can push the sealing sheet open. At this time, the air valve is opened to discharge the water in the water injection cylinder and inject water into the test frame area. This method can improve the overall airtightness of the water injection cylinder and prevent air leakage from affecting the outflow of water controlled by the air valve. The water injection speed of the water injection cylinder can be checked and calculated through the observation port and the scale bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall isometric view of a high-precision test pit water injection test device proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a test pit water injection test device with high accuracy proposed by the present invention; Figure 3 This is a schematic diagram of the back structure of a test pit water injection test device with high accuracy proposed by the present invention; Figure 4 A schematic diagram of the bottom structure of a test pit water injection test device with high accuracy proposed by the present invention; Figure 5 This is an overall cross-sectional view of a high-precision test pit water injection test device proposed by the present invention; Figure 6 for Figure 5 A magnified view of the structure at point A; Figure 7 for Figure 5 Enlarged view of the structure at B.

[0018] Description of the figure numbers: 1. Soil insertion frame; 2. Slide; 3. Sliding block; 4. Support block; 5. Bracket; 6. Vertical rod; 7. First external thread; 8. Disc; 9. Second external thread; 10. First gear; 11. Second gear; 12. Twist handle; 13. Contraction groove; 14. Annular plug plate; 15. Water injection cylinder; 16. Limiting port; 17. Moving port; 18. Limiting block; 19. Scale groove; 20. Bracket; 21. Test frame; 22. Installation port; 23. Rubber block; 24. Ventilation pipe; 25. Air valve; 26. Water inlet pipe; 27. Liquid inlet bucket; 28. Sealing groove; 29. ​​Sealing pad; 30. First sealing block; 31. Spring telescopic rod; 32. Round plate; 33. Second sealing block; 34. Pull block; 35. Drain port; 36. Internally threaded pipe; 37. Drain pipe; 38. Push rod; 39. Sealing sheet; 40. Observation port; 41. Scale bar. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Embodiment 1: See also Figure 1-5A high-precision test pit water injection test device comprises a soil insertion frame 1, the outer walls of both sides of the soil insertion frame 1 are provided with slide grooves 2, and slide blocks 3 are slidably installed on the slide grooves 2, and support blocks 4 are welded on the slide blocks 3, and brackets 5 are welded on both sides of the top end surface of the soil insertion frame 1, and vertical rods 6 are provided on the brackets 5, and the outer wall of the vertical rod 6 is provided with a first external thread 7, and the vertical rod 6 is connected to the bracket 5 through the first external thread 7, a disc 8 is installed on one side of the bracket 5 through a rotating shaft, and the outer wall of the disc 8 is provided with a second external thread 9, the vertical rod 6 and the disc 8 are connected through the first external thread 7 and the second external thread 9, a first gear 10 is welded on the top of the disc 8, and a second gear 11 is meshed with one side of the first gear 10, and the second gear 11 is meshed with the second gear 11. A screw handle 12 is provided on the top, a contraction groove 13 is provided on the bottom of the soil insertion frame 1, and an annular plug plate 14 is inserted inside the contraction groove 13. The bottom of the first gear 10 is connected to the top of the soil insertion frame 1 through a rotating shaft. A water injection cylinder 15 is provided above the top of the soil insertion frame 1. The bottoms of the soil insertion frame 1 and the annular plug plate 14 are both blade-shaped. Two limit openings 16 are provided on the outer walls at both ends of the soil insertion frame 1. A moving opening 17 is provided on the outer walls at both ends of the soil insertion frame 1, and one end of the limit opening 16 is connected to the moving opening 17. A limit block 18 is welded on the outer walls at both ends of the annular plug plate 14, and one end of the limit block 18 extends into the limit opening 16. A scale groove 19 is provided on one side of the slide 2, and the annular plug plate 14 can extend outward by 10 cm. By rotating the annular plug plate 14, the limit block 18 is moved to the moving opening 17, and the annular plug plate 14 can be moved outward from the contraction groove 13. When the limit block 18 moves to the bottom of the moving opening 17, the annular plug plate 14 is rotated again, so that the limit block 18 can be stuck in the limit opening 16, thereby fixing the position of the annular plug plate 14, pressing the soil insertion frame 1, so that the annular plug plate 14 and the bottom of the soil insertion frame 1 are inserted into the soil. According to the scale groove 19, the distance that the soil insertion frame 1 penetrates into the soil plus the length of the annular plug plate 14 can be checked, and the depth of the water injection test can be determined. By rotating the screw handle 12, the second gear 11 can be used to drive the first gear 10 to rotate. When the first gear 10 rotates, it will drive the disc 8 to rotate. Under the action of the first external thread 7 and the second external thread 9, the vertical rod 6 can push the support block 4 downward, and make the bottom of the support block 4 fit with the soil surface to form a support for the soil insertion frame 1. At the same time, the soil insertion frame 1 can be kept vertical to the soil.

[0021] Embodiment 2: See also Figure 1-7, which is different from Example 1 in that a pair of brackets 20 are welded to the top of the soil insertion frame 1, and the bottom of the water injection cylinder 15 is fitted with the top of the bracket 20, a test frame 21 is provided inside the soil insertion frame 1, and the top of the test frame 21 is welded and fixed to the bottom of the bracket 20, the test frame 21 is located below the bottom of the water injection cylinder 15, a mounting port 22 is provided at the top of the water injection cylinder 15, and a rubber block 23 is clamped inside the mounting port 22, a vent pipe 24 is welded to the center of the rubber block 23, and an air valve 25 is provided on the top of the vent pipe 24, a water inlet pipe 26 is welded to the rubber block 23, and a liquid inlet bucket 27 is welded to one end of the water inlet pipe 26, two sealing grooves 28 are provided on the inner wall of the mounting port 22, two sealing gaskets 29 are glued to the outer wall of the rubber block 23, and the two sealing gaskets 29 are respectively clamped in the two sealing grooves 28, and the inner wall of the liquid inlet bucket 27 A first sealing block 30 is glued to the top of the liquid inlet bucket 27, a spring telescopic rod 31 is screwed to the top of the liquid inlet bucket 27, and a circular plate 32 is installed at the telescopic end of the spring telescopic rod 31 through a rotating shaft, a second sealing block 33 is glued to one end of the circular plate 32, and a pull block 34 is welded to the other end of the circular plate, the first sealing block 30 and the second sealing block 33 are both made of rubber material, and the first sealing block 30 and the second sealing block 33 are both stepped, a drainage port 35 is opened at the bottom of the water injection cylinder 15, and an internal threaded pipe 36 is welded to the bottom of the drainage port 35, and a drainage pipe 37 is threadedly installed at the bottom of the internal threaded pipe 36, a top rod 38 is welded inside the drainage port 35, and sealing sheets 39 are glued to the inner wall of the drainage pipe 37, and four sealing sheets 39 are combined into a circle, and an observation port 40 is provided on the outer wall of the water injection cylinder 15, and a scale bar 41 is provided on one side of the observation port 40; The bracket 20 can be used to fix the water injection cylinder 15, and the bottom of the test frame 21 is at the same horizontal position as the bottom of the soil insertion frame 1. When the soil insertion frame 1 is inserted into the soil, the test frame 21 will be inserted into the soil together. The liquid inlet hopper 27 and the water inlet pipe 26 can be used to fill the water injection cylinder 15. After the filling is completed, the spring telescopic rod 31 is extended by pulling the pull block 34, and the circular plate 32 is rotated to align the first sealing block 30 with the second sealing block 33. The pull block 34 is released, and the first sealing block 30 is inserted into the liquid inlet hopper 27 and fits tightly with the second sealing block 33. , to avoid air leakage that affects the test accuracy, the gas at the vent pipe 24 can be controlled to enter the water injection cylinder 15 by rotating the air valve 25, and the sealing groove 28 and the sealing gasket 29 can increase the sealing performance at the installation port 22. By rotating the drain pipe 37, it is moved upward on the internal threaded tube 36, and the push rod 38 can push open the sealing sheet 39. At this time, opening the air valve 25 can drain the water in the water injection cylinder 15 and inject water into the test frame 21 area. The water injection speed of the water injection cylinder 15 can be viewed and calculated through the observation port 40 and the scale bar 41.

[0022] When the present invention is in use, the annular plug plate 14 is rotated to move the limit block 18 to the moving opening 17, so that the annular plug plate 14 can be moved outward from the contraction groove 13. When the limit block 18 moves to the bottom of the moving opening 17, the annular plug plate 14 is rotated again to make the limit block 18 snap into the limit opening 16, thereby fixing the position of the annular plug plate 14, pressing the soil insertion frame 1, so that the annular plug plate 14 and the bottom of the soil insertion frame 1 are inserted into the soil, and the distance of the soil insertion frame 1 into the soil can be checked according to the scale groove 19. The length of the annular plug plate 14 can determine the depth of the water injection test. By turning the knob 12, the second gear 11 can be used to drive the first gear 10 to rotate. When the first gear 10 rotates, the disc 8 can be driven to rotate. Under the action of the first external thread 7 and the second external thread 9, the vertical rod 6 can push the support block 4 downward, and the bottom of the support block 4 can be fitted with the soil surface to form a support for the soil insertion frame 1. At the same time, the soil insertion frame 1 can be kept vertical to the soil. The bracket 20 can be used to fix the water injection cylinder 15 for testing. The bottom of the frame 21 is at the same horizontal position as the bottom of the soil insertion frame 1. When the soil insertion frame 1 is inserted into the soil, the test frame 21 will be inserted into the soil together. The liquid inlet bucket 27 and the water inlet pipe 26 can be used to fill the water injection cylinder 15 with water. After the filling is completed, the spring telescopic rod 31 is extended by pulling the pull block 34, and the circular plate 32 is rotated to align the first sealing block 30 and the second sealing block 33. The pull block 34 is released, and the first sealing block 30 is inserted into the liquid inlet bucket 27 and fits tightly with the second sealing block 33 to avoid air leakage. The test accuracy is affected. By rotating the air valve 25, the gas at the ventilation pipe 24 can be controlled to enter the water injection cylinder 15. The sealing groove 28 and the sealing gasket 29 can increase the sealing performance at the installation port 22. By rotating the drain pipe 37 to move it upward on the internal threaded tube 36, the push rod 38 can push open the sealing sheet 39. At this time, opening the air valve 25 can drain the water in the water injection cylinder 15 and inject water into the test frame 21 area. The water injection speed of the water injection cylinder 15 can be checked and calculated through the observation port 40 and the scale bar 41.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of this template.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A highly accurate test pit water injection test device, comprising a soil insertion frame (1), characterized in that: The outer walls of both sides of the soil insertion frame (1) are provided with sliding grooves (2), and a slider (3) is slidably mounted on the sliding groove (2), and a support block (4) is welded to the slider (3). Brackets (5) are welded to both sides of the top end surface of the soil insertion frame (1), and a vertical rod (6) is provided on the bracket (5). The outer wall of the vertical rod (6) is provided with a first external thread (7), and the vertical rod (6) is connected to the bracket (5) through the first external thread (7). A disk (8) is installed on one side of the bracket (5) through a rotating shaft, and the outer wall of the disk (8) is provided with a second external thread (9). The vertical rod (6) and the disk (8) are connected through the first external thread ( 7) is connected to the second external thread (9), a first gear (10) is welded to the top of the disc (8), and a second gear (11) is meshed on one side of the first gear (10), a screw handle (12) is provided on the top of the second gear (11), a contraction groove (13) is provided at the bottom of the soil insertion frame (1), and an annular plug plate (14) is inserted into the interior of the contraction groove (13), the bottom of the first gear (10) is connected to the top of the soil insertion frame (1) via a rotating shaft, a water injection cylinder (15) is provided above the top of the soil insertion frame (1), and the bottoms of the soil insertion frame (1) and the annular plug plate (14) are both blade-shaped.

2. A high-precision test pit water injection test device according to claim 1, characterized in that: Two limit openings (16) are provided on the outer walls at both ends of the soil insertion frame (1), a movable opening (17) is provided on the outer walls at both ends of the soil insertion frame (1), and one end of the limit opening (16) is connected to the movable opening (17), and a limit block (18) is welded to the outer walls at both ends of the annular plug plate (14), and one end of the limit block (18) extends into the limit opening (16).

3. A high-precision test pit water injection test device according to claim 1, characterized in that: A scale groove (19) is provided on one side of the slide groove (2).

4. A high-precision test pit water injection test device according to claim 1, characterized in that: A pair of brackets (20) are welded to the top of the soil insertion frame (1), and the bottom of the water injection cylinder (15) is in contact with the top of the brackets (20). A test frame (21) is provided inside the soil insertion frame (1), and the top of the test frame (21) is fixedly welded to the bottom of the brackets (20). The test frame (21) is located below the bottom of the water injection cylinder (15).

5. A high-precision test pit water injection test device according to claim 1, characterized in that: The top of the water injection cylinder (15) is provided with a mounting opening (22), and a rubber block (23) is clamped inside the mounting opening (22). A vent pipe (24) is welded to the center of the rubber block (23), and a gas valve (25) is provided at the top of the vent pipe (24). A water inlet pipe (26) is welded to the rubber block (23), and a liquid inlet hopper (27) is welded to one end of the water inlet pipe (26).

6. A high-precision test pit water injection test device according to claim 5, characterized in that: The inner wall of the installation opening (22) is provided with two sealing grooves (28); the outer wall of the rubber block (23) is glued with two sealing pads (29), and the two sealing pads (29) are respectively clamped in the two sealing grooves (28); the interior of the liquid inlet hopper (27) is glued with a first sealing block (30); the top of the liquid inlet hopper (27) is screwed with a spring telescopic rod (31), and the telescopic end of the spring telescopic rod (31) is installed with a circular plate (32) via a rotating shaft; one end of the circular plate (32) is glued with a second sealing block (33), and the other end of the circular plate is welded with a pull block (34).

7. A high-precision test pit water injection test device according to claim 6, characterized in that: The first sealing block (30) and the second sealing block (33) are both made of rubber material, and the first sealing block (30) and the second sealing block (33) are both in a stepped shape.

8. The high-precision test pit water injection test device according to claim 1, characterized in that: The bottom of the water injection cylinder (15) is provided with a liquid discharge port (35), and an internally threaded tube (36) is welded to the bottom of the liquid discharge port (35), a liquid discharge tube (37) is threadedly mounted to the bottom of the internally threaded tube (36), a push rod (38) is welded inside the liquid discharge port (35), and sealing sheets (39) are glued around the inner wall of the liquid discharge tube (37), and four sealing sheets (39) are combined into a circle.

9. A high-precision test pit water injection test device according to claim 1, characterized in that: An observation port (40) is provided on the outer wall of the water injection cylinder (15), and a scale bar (41) is provided on one side of the observation port (40).

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