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CN-121977878-A - Sampling device for cutting soil profile sample by water

CN121977878ACN 121977878 ACN121977878 ACN 121977878ACN-121977878-A

Abstract

The application relates to the field of soil sampling, and discloses a water-cutting soil profile sampling device which comprises a supporting rod, a shovel plate, a cutting assembly, a driving assembly and a recycling assembly. The shovel plate is fixed at the bottom end of the supporting rod and used for positioning and protecting, and the cutting assembly is slidably arranged on the shovel plate sliding rail. The driving assembly comprises an inner shell, an impeller and a rotating disc, the impeller is driven to rotate by utilizing the kinetic energy of cutting water flow, and the cutting assembly is driven to swing reciprocally through the multistage adjustable eccentric mechanism, so that no electric driving is realized, and the cutting amplitude is adjustable. The recovery component is provided with a sliding sleeve and a reflux head, the sliding sleeve is displaced to conduct a flow path and trigger a water supply switch when the device is inserted into soil, and the negative pressure is utilized to recover the cutting waste liquid. The application has compact structure, eliminates the hidden trouble of circuit short circuit, has the functions of contact type safety triggering and infiltration prevention, is suitable for undisturbed sampling of field soil, and thoroughly eliminates the hidden trouble of short circuit and electric leakage possibly occurring in the wet or ponding operation environment of electric elements.

Inventors

  • LI MU
  • LIN WEIXIN

Assignees

  • 福建中测恒成科技有限公司

Dates

Publication Date
20260505
Application Date
20260304

Claims (10)

  1. 1. The sampling device for cutting the soil profile sample by using water is characterized by comprising a supporting rod (1), a shovel plate (2), a cutting assembly (3), a driving assembly (4) and a recovery assembly (5); The shovel plate (2) is fixedly connected to the bottom end of the supporting rod (1), and a sliding rail (21) is arranged at one end, away from the sampling position, of the shovel plate (2); The cutting assembly (3) is connected to the outer wall of the sliding rail (21) in a sliding way through a sliding seat (22) and is used for spraying water flow to cut soil; The driving assembly (4) is arranged on the shovel plate (2) and is used for driving the cutting assembly (3) to swing back and forth on the sliding rail (21); The recovery component (5) is arranged on the shovel plate (2) and positioned on one side of the cutting component (3) and is used for recovering water flow generated by cutting.
  2. 2. A soil profile sampling apparatus cut with water according to claim 1, wherein the drive assembly (4) comprises an outer housing (411), an inner housing (412), an impeller (413) and a rotating disc (47); the outer shell (411) is fixedly connected to one side, close to the soil sample, of the shovel plate (2), and the inner shell (412) is mounted on the inner wall of the outer shell (411); The impeller (413) is rotatably arranged in the inner shell (412), and a liquid inlet and a liquid outlet for driving the impeller (413) to rotate are formed in the inner shell (412); The outer wall of the inner shell (412) is rotatably connected with a driving wheel (410), and the driving wheel (410) is coaxially connected with the impeller (413); The rotating disc (47) is rotatably connected to the outer wall of the shovel plate (2), the rotating disc (47) is coaxially and fixedly connected with a driven wheel (49), and the driven wheel (49) is meshed with the driving wheel (410).
  3. 3. The soil profile sampling device cut by water according to claim 2, wherein the cutting assembly (3) comprises a water cutter head (31) fixedly connected to the sliding seat (22), a vertical plate (34) is fixedly connected to the upper surface of the water cutter head (31), and a rotating shaft (33) is fixedly connected to the vertical plate (34); the driving assembly (4) further comprises a supporting seat (41) and a swinging frame (42); The supporting seat (41) is fixedly connected to the supporting rod (1), and the swinging frame (42) is rotatably connected to the outer wall of the supporting seat (41); a chute (43) is formed in the outer wall of the swing frame (42), and the rotating shaft (33) is arranged in the chute (43) in a sliding manner; An eccentric transmission mechanism is arranged on the rotating disc (47), and one end of the eccentric transmission mechanism is connected in the sliding groove (43) in a sliding mode and is used for pushing the swinging frame (42) to swing when the rotating disc (47) rotates.
  4. 4. A soil profile sampling apparatus using water cutting according to claim 3, wherein the eccentric transmission mechanism comprises a fixing groove (48) formed on the outer wall of the rotating disc (47), a fixing bolt (45) screwed into the fixing groove (48), and a rotating wheel (44) rotatably connected to the outer wall of the fixing bolt (45); The rotating wheel (44) is arranged on the inner wall of the sliding groove (43) in a sliding manner; The fixed grooves (48) are arranged in a plurality of groups, the fixed grooves (48) are distributed in a linear array, and the distance between each group of fixed grooves (48) and the rotation center of the rotating disc (47) is different.
  5. 5. A soil profile sampling device using water cutting according to claim 1, wherein the slide rail (21) is provided in a T-shaped configuration, the slide seat (22) being in clearance fit with the slide rail (21); The outer wall of the sliding seat (22) is provided with two groups of conical bosses along the axial direction of the sliding rail (21), and the conical bosses are abutted against the surface of the sliding rail (21).
  6. 6. A soil profile sampling apparatus using water cutting according to claim 1, wherein the recovery assembly (5) comprises a return pipe (51) and a return head (55) fixedly connected to the bottom end of the return pipe (51); The return pipe (51) is fixed on the sliding rail (21) through a group of sliding seats (22); A reflux groove (56) is formed in the outer wall of the reflux head (55), and a sliding sleeve (58) is sleeved on the outer wall of the reflux head (55); the sliding sleeve (58) can slide up and down on the outer wall of the backflow head (55), and a liquid inlet (59) is formed in the outer wall of the sliding sleeve (58); when the sliding sleeve (58) slides upwards to a working position, the liquid inlet (59) is communicated with the reflux groove (56).
  7. 7. The soil profile sampling device using water cutting according to claim 6, wherein the outer wall of the return head (55) is slidably connected with a piston plate (52), and the lower surface of the return pipe (51) is fixedly connected with a trigger button (53); a return spring (54) is connected between the sliding sleeve (58) and the piston plate (52); The trigger button (53) is used for controlling the start and stop of an external water pumping device and a water supply device, and when the sliding sleeve (58) slides upwards to compress the reset spring (54), the reset spring (54) pushes the piston plate (52) to move upwards to trigger the trigger button (53).
  8. 8. The sampling device for soil profile samples by water cutting according to claim 7, wherein a protecting sleeve (57) is fixedly connected to the outer wall of the sliding sleeve (58), the protecting sleeve (57) is sleeved on the outer wall of the return pipe (51), and the return spring (54), the piston plate (52) and the trigger button (53) are covered inside.
  9. 9. The water-cut soil profile sampling device of claim 4, wherein a gasket (46) is inserted into the outer wall of the rotor (44), the gasket (46) closing the end opening of the rotor (44).
  10. 10. The soil profile sampling device using water cutting according to claim 2, wherein a flow guide pipe (414) is connected to the upper surface of the inner housing (412), and the flow guide pipe (414) is connected to an external water supply pipe; the liquid outlet of the inner shell (412) is communicated with a water inlet pipeline of the cutting assembly (3).

Description

Sampling device for cutting soil profile sample by water Technical Field The invention relates to the technical field of soil sampling, in particular to a water-cut soil profile sample sampling device. Background Soil profile sampling is a fundamental work in the study of soil science, agronomy and environmental science, aiming at obtaining soil samples which maintain the original structure and physicochemical properties. Compared with the traditional mechanical excavation sampling, the auxiliary cutting by utilizing the high-pressure water jet has small extrusion disturbance to the soil body, and is gradually applied to the fine sampling operation. However, the existing water cutting sampling device still has some technical limitations in practical application. First, in the conventional water cutting device, when the cutting head is driven to reciprocate to form a slit, power is generally supplied by an electric driving unit such as a motor. This not only increases the overall weight and manufacturing complexity of the device, making field portability inconvenient, but more critical, the soil sampling environment is often more humid, and involves high pressure water flow operations, the electrical drive system is extremely vulnerable to moisture or water ingress, thereby causing electrical short circuits or leakage faults, reducing the reliability and safety of the device. Secondly, the cutting mechanism of the existing equipment mostly adopts a mechanical connecting rod or guide rail design with fixed parameters, and the swing amplitude or the moving stroke of the cutting nozzle is difficult to adjust once the manufacturing is finished. When the soil column sampling requirements of different sizes are met, different power parts or the whole equipment often need to be replaced, so that the universality of the device is poor, and the operation cost is increased. In addition, conventional water-cut sampling devices often lack an effective contact detection and waste recovery linkage mechanism. On one hand, the start and stop of the equipment are controlled manually by operators, if a high-pressure water pump is started by mistake when a spray head is not aligned or is not cut into soil, water flow splashing is easy to cause safety accidents, and on the other hand, if a large amount of waste liquid generated in the cutting process cannot be discharged in time, the waste liquid can be accumulated in a cutting pit and permeate into a soil sample, so that the moisture content of the soil sample is changed, the original property of the sample is damaged, and the accuracy of subsequent analysis data is further affected. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a water-cut soil profile sample sampling device, which solves the problems of complex power source configuration, disturbance of water flow to a soil sample structure and insufficient operation safety of the conventional soil sampling equipment in the cutting process. The water-cutting soil profile sampling device comprises a supporting rod, a shovel plate, a cutting assembly, a driving assembly and a recovery assembly. The supporting rod is used for integrally supporting and holding the device, and the bottom end of the supporting rod is fixedly connected with a shovel plate. The shovel plate is of a thin-wall plate-shaped structure, and the lower surface of the shovel plate is conical and is used for cutting into the boundary of the sampling position and physically isolating and protecting soil. The one end that sampling position was kept away from to the shovel board is provided with the slide rail of T type structure, and cutting assembly passes through sliding seat slidable mounting in the outer wall of this slide rail, can follow slide rail axis and remove. The driving component is arranged on the shovel plate and used for driving the cutting component to swing back and forth on the sliding rail so as to implement cutting operation. The recovery component is arranged on the shovel plate and positioned on one side of the cutting component and is used for recovering waste liquid generated in the cutting process under negative pressure. Further, to achieve passive automatic cutting, the drive assembly employs a fluid kinetic energy conversion structure. The driving assembly comprises an outer shell, an inner shell, an impeller and a rotating disc. The outer shell is fixed in the shovel board and is close to soil sample's one side, and the inner shell is placed in wherein. The impeller rotates and installs in inside the inner shell, and the inner shell is equipped with inlet and liquid outlet, and outside high-pressure rivers get into the rotation of impact impeller through the inlet earlier, and then the leading-in cutting assembly of liquid outlet is as the cutting medium. The outer wall of the inner shell is rotationally connected with a driving wheel coaxial with the impeller, and the driving wheel is mesh