Patent ID: 11965805
Assignee: NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES, MEE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A soil sampling method for a high geological background area by using the sampling device for evaluating ecological risk of soil in a high geological background area according to claim 13, comprising the following steps:
S1, firstly, leveling a surface of a position to be sampled, then placing the whole sampling device according to claim 13 at the position to be sampled, and inserting the socket cone (333) at the lower end of each leg telescopic rod (332) into the ground to stably support the whole device;
S2, connecting the impact rod (13) with the top of the connecting sliding rod (12), and inserting the sampling hopper (11) into the soil under the impact effect of a reciprocating motion of the impact hammer (131) in the impact rod (13), so that a soil sample is accommodated in the sampling hopper (11);
S3, dismantling the impact rod (13) from the top of the connecting sliding rod (12) and then connecting the impact rod (13) with the top of the stripping sliding cylinder (21), and impacting and inserting the stripping plates (22) into the soil under the impact effect of the reciprocating motion of the impact hammer (131) in the impact rod (13), so that the outer side of the sampling hopper (11) is surrounded by the stripping plates (22);
S4, driving the first gear (232) to rotate by a motor or manually, then driving the stripping plate control ring (23) to rotate and driving the lifting drive disc (233) to move downwards along an axis of the stripping plate control ring (23), further driving the wedge block (24) to move by the lifting driving disc (233), and forcing the stripping plates (22) to get away from the sampling hopper (11) in the moving process by the wedge block (24);
S5, after a gap is formed between the stripping plates (22) and the sampling hopper (11), enabling the telescopic rod (281), together with the rotating rod (283) and the cutting plate (284), to move downwards in the gap between the stripping plates (22) and the sampling hopper (11) under the driving of the first motor (285);
S6, when an upper surface of the cutting plate (284) is flush with a lower end face of the sampling hopper (11), driving the rotating rod (283) to rotate by the second motor (286) and driving the cutting plate (284) to cut and strip the soil sample in the sampling hopper (11) from the outside; and
S7, finally, separately detaching the sampling hopper (11) together with the connecting sliding rod (12), connecting the impact rod (13) with the top of the connecting sliding rod (12), and separating the soil sample in the sampling hopper (11) by the impact effect of the impact rod (13) and putting the soil sample into a sample container.