Sampling device convenient to operate and used for soil detection

Abstract

The utility model discloses a convenient-to-operate sampling device for soil detection. The convenient-to-operate sampling device comprises a sampling tube and a fixing frame for supporting the sampling tube, the fixing frame comprises a mounting plate, a guide plate, and an upper fixing plate and a lower fixing plate which are fixedly connected with the mounting plate; a clamping assembly for clamping a sampling tube is arranged at one end of the fixing plate; a sliding cavity is formed in the guide plate; the mounting plate is in sliding connection with an inner cavity of the guide plate; a driving assembly for driving the mounting plate to move up and down is mounted on one side of the guide plate; one side of the guide plate is fixedly connected with the first screw sleeve through a connecting rod; the first threaded sleeve is installed on the first threaded rod in a threaded mode, and the lower end of the first threaded rod is fixedly connected to the base. The utility model has the advantages that the height of the sampling tube can be greatly adjusted according to the height of an operator, so that the operator can conveniently find a comfortable working height.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling device technical field, especially in soil detection with sampling device convenient to operate. BACKGROUND

[0002] When detecting heavy metals and the like in soil, a solvent needs to be added to the soil to be detected to prepare a soil solution sample, and a sampling device is used to suck a quantitative sample for subsequent detection. Most of the existing soil sample sampling instruments use a support that can be lifted to hold a sampling tube. When sampling, the sampling tube is lifted to sample. The problem is that different operators with significant height differences have different eye levels. The existing sampling device has limited lifting adjustment range, and the lifting adjustment also needs to consider the sampling process of the sampling tube, resulting in general operation comfort. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a soil detection sampling device convenient to operate, which can greatly adjust the height of the sampling tube according to the height of the operator, so that the operator can easily find a comfortable working height.

[0004] To solve the above technical problem, the technical scheme of the utility model is a soil detection sampling device convenient to operate, which comprises a sampling tube and a fixing frame for supporting the sampling tube. The fixing frame comprises a mounting plate, a guide plate, and two upper and lower fixing plates fixed to the mounting plate. One end of the fixing plate is provided with a clamping assembly for clamping the sampling tube. The guide plate is provided with a sliding cavity. The mounting plate is slidably connected to the inner cavity of the guide plate. A driving assembly is installed on one side of the guide plate for driving the mounting plate to move up and down. The guide plate is fixed to a first screw sleeve through a connecting rod on one side. The first screw sleeve is threadedly installed on a first screw rod, and the lower end of the first screw rod is fixedly connected to the base.

[0005] Further, the driving assembly comprises a rack fixed to the side of the mounting plate away from the fixing plate. Two mounting seats are fixed to the guide plate. A rotating shaft is rotatably installed between the two mounting seats. A gear meshing with the rack is installed on the rotating shaft. An avoidance hole is formed in the guide plate for the gear to pass through.

[0006] Further, a protective cover is fixed to the surface of the guide plate. The protective cover covers the outside of the gear. A limiting notch is formed in one side of the protective cover. A limiting block is fixed to the rotating shaft. The rotating shaft can slide along the axial direction. The thickness of the gear is greater than the thickness of the rack.

[0007] Further, a limiting ring is fixed to the rotating shaft. The limiting points of the two directions of the axial movement of the rotating shaft are in contact with the mounting seat through the limiting ring and in contact with the outer wall of the protective cover, respectively.

[0008] Furthermore, the clamping assembly includes a clamping block; the clamping block is divided into a fixed clamping block that is fixedly connected to the fixed plate and a movable clamping block that is connected to the fixed clamping block by bolts; the side of the fixed clamping block opposite to the movable clamping block is provided with an arc-shaped groove for clamping the sampling tube.

[0009] Furthermore, the connecting rod is a telescopic rod, and the telescopic rod is connected by a locking screw.

[0010] Furthermore, it also includes an air extraction cylinder and a lifting platform for placing samples; the top of the sampling tube is connected to the air inlet of the air extraction cylinder via a flexible hose.

[0011] Furthermore, it also includes a bracket for mounting the vacuum pump.

[0012] Furthermore, the bracket includes a second screw and a second threaded sleeve threadedly connected to the second screw; a fixed connecting arm is fixedly connected to the outer wall of the second threaded sleeve, and a movable arm is connected to the fixed connecting arm by bolts; a clamping ring for clamping the vacuum cylinder is fixedly connected to one end of both the fixed connecting arm and the movable arm.

[0013] Furthermore, a first on / off valve is provided at the upper part of the sampling tube; a transverse branch pipe is connected to the upper part of the sampling tube below the first on / off valve; a longitudinal branch pipe is connected to the transverse branch pipe; a second on / off valve is provided at the connection between the transverse branch pipe and the longitudinal branch pipe; and graduation lines are provided on the sampling tube.

[0014] The beneficial effects of this utility model are:

[0015] Before sampling, the first screw sleeve is rotated to adjust the effective height of the fixing frame to a suitable level according to the operator's height. The mounting plate can also be moved via a drive assembly, which in turn moves the clamping assembly and sampling tube up and down, allowing for further adjustment of the sampling tube's height. This invention has a simple structure and allows for significant adjustment of the sampling tube's height based on the operator's height, making it easy for the operator to find a comfortable working height. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0017] Figure 2 for Figure 1 A sectional view of the central fixed frame;

[0018] Figure 3 for Figure 1 A cross-sectional view of the central support in height adjustment mode;

[0019] Figure 4 for Figure 1Cross-sectional view of the middle support in the height-locked state;

[0020] Figure 5 For Figure 1 Right view of the middle partial structure.

[0021] In the figure, 1 - sampling pipe, 2 - first on-off valve, 3 - hose, 4 - suction cylinder, 5 - transverse branch pipe, 6 - longitudinal branch pipe, 7 - second on-off valve, 8 - mounting plate, 9 - fixed plate, 10 - rack, 11 - guide plate, 12 - mounting seat, 13 - gear, 14 - protective cover, 15 - clamping block, 16 - bolt, 17 - rotating shaft, 18 - connecting rod, 19 - first screw sleeve, 20 - first screw rod, 21 - base, 22 - second screw rod, 23 - second screw sleeve, 24 - fixed connecting arm, 25 - clamping ring, 26 - lifting platform, 27 - limiting block, 28 - limiting gap, 29 - moving arm, 30 - limiting ring. DETAILED DESCRIPTION

[0022] The specific embodiments of the present application will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0023] EMBODIMENT

[0024] A soil detection sampling device convenient to operate, as shown in Figures 1-5 The sampling device convenient to operate for soil detection includes a sampling pipe 1 and a fixing frame for supporting the sampling pipe 1. The fixing frame includes a mounting plate 8, a guide plate 11, and two upper and lower fixed plates 9 fixedly connected with the mounting plate 8. One end of each fixed plate 9 is provided with a clamping assembly for clamping the sampling pipe 1. The guide plate 11 is provided with a sliding cavity. The mounting plate 8 is in sliding connection with the inner cavity of the guide plate 11. One side of the guide plate 11 is provided with a driving assembly for driving the mounting plate 8 to move up and down. One side of the guide plate 11 is fixedly connected with a first screw sleeve 19 through a connecting rod 18. The first screw sleeve 19 is threadedly installed on a first screw rod 20, and the lower end of the first screw rod 20 is fixedly connected with a base 21.

[0025] Before sampling, the effective height of the fixing frame can be adjusted to a suitable height by rotating the first screw sleeve 19 according to the height of the operator. The mounting plate 8 can be driven to move by the driving assembly, so as to drive the clamping assembly and the sampling pipe 1 to move up and down, thereby specifically adjusting the height of the sampling pipe 1. The soil detection sampling device convenient to operate has a simple structure, can greatly adjust the height of the sampling pipe 1 according to the height of the operator, and is convenient for the operator to find a comfortable working height.

[0026] Specifically, the driving assembly comprises a rack 10 fixed to the mounting plate 8 away from the fixed plate 9, two mounting seats 12 fixed to the guide plate 11, a rotating shaft 17 rotatably mounted between the two mounting seats 12, a gear 13 mounted on the rotating shaft 17 and engaged with the rack 10, and an avoiding hole provided in the guide plate 11 and through which the gear 13 penetrates. Rotating the rotating shaft 17 drives the gear 13 to rotate, thereby driving the rack 10 to move up and down, and driving the mounting plate 8 to slide up and down in the inner cavity of the guide plate 11, thereby driving the clamped sampling tube 1 to move up and down and achieving the adjustment of the height.

[0027] Specifically, the guide plate 11 is fixed with a protective cover 14 on the surface, the protective cover 14 covers the outside of the gear 13, a limiting gap 28 is formed on one side of the protective cover 14, a limiting block 27 is fixed on the rotating shaft 17, the rotating shaft 17 can slide along the axial direction, and the thickness of the gear 13 is greater than the thickness of the rack 10. When it is necessary to adjust the height of the sampling tube 1, the rotating shaft 17 is pushed to move to the inside of the protective cover 14, so that the limiting block 27 moves to the inner cavity of the protective cover 14, as shown in Figure 2 , and then the rotating shaft 17 is rotated to adjust the height of the sampling tube 1. After the adjustment is completed, the limiting block 27 is rotated to an angle just aligned with the limiting gap 28, and then the rotating shaft 17 is pulled outwards, so that the limiting block 27 just moves into the limiting gap 28, as shown in Figure 3 . At this time, the limiting gap 28 limits the rotation of the limiting block 27, and plays a role of braking the rotating shaft 17 and the gear 13.

[0028] Specifically, a limiting ring 30 is fixed on the rotating shaft 17, and the limiting points of the rotating shaft 17 in the two directions of axial movement are in contact with the mounting seat 12 and the outer wall of the protective cover 14 through the limiting ring 30. When in the state of adjusting the height, the limiting ring 30 is in contact with the mounting seat 12, as shown in Figure 2 , and when in the state of locking the height, the limiting ring 30 is in contact with the protective cover 14, as shown in Figure 3 . The limiting ring 30 cooperates with the outer wall of the mounting seat 12 and the protective cover 14 to play a limiting role.

[0029] Specifically, the clamping assembly comprises clamping blocks 15, the clamping blocks 15 are divided into fixed clamping blocks fixed to the fixed plate 9 and movable clamping blocks connected to the fixed clamping blocks through bolts 16, and the opposite side of the fixed clamping blocks and the movable clamping blocks is provided with an arc-shaped groove for clamping the sampling tube 1. The upper part and the lower part of the sampling tube are clamped by the upper and lower two groups of clamping blocks 15, and different sizes of sampling tubes 1 can be clamped.

[0030] Specifically, the connecting rod 18 is a telescopic rod, and the telescopic rod is connected through a locking screw. When it is necessary to adjust the extension distance of the working surface relative to the first screw rod 20, the locking screw can be loosened, the length of the telescopic rod is adjusted, and then the locking screw is tightened.

[0031] Specifically, it also includes a suction cylinder 4 and a lifting platform 26 for placing a sample; the top of the sampling tube 1 is communicated with the air inlet of the suction cylinder 4 through the hose 3. When sampling, the height of the lifting platform 26 is first controlled to be lowered, then the container containing the sample is placed on the lifting platform 26 and the container is located directly below the sampling tube 1, then the lifting platform 26 is controlled to rise until the lower end of the sampling tube 1 is inserted into the sample. When sampling, the piston of the suction cylinder 4 is slowly pulled outward, so that the sample solution is sucked into the sampling tube 1 under the action of negative pressure until the sample gradually rises to reach the predetermined scale. Then the lifting platform 26 is lowered until the container can be taken out, and the sampling tube 1 does not need to be moved during sampling, avoiding the shaking of the sampling tube 1 to make the sample drop, effectively improving the accuracy of sampling.

[0032] Specifically, in order to facilitate operation, a bracket for installing the suction cylinder 4 is further included.

[0033] Specifically, the bracket includes a second screw rod 22, a second screw sleeve 23 threadedly connected with the second screw rod 22; the outer wall of the second screw sleeve 23 is fixedly connected with a fixed connecting arm 24, and the fixed connecting arm 24 is connected with a moving arm 29 through bolts; one end of the fixed connecting arm 24 and the moving arm 29 are both fixedly connected with a clamping ring 25 for clamping the suction cylinder 4. The suction cylinder 4 is clamped between the clamping rings 25, and different sizes of the suction cylinder 4 can be stably clamped.

[0034] Specifically, in order to facilitate flushing, a first on-off valve 2 is arranged at the upper part of the sampling tube 1; a horizontal branch pipe 5 is communicated with the upper part of the sampling tube 1 below the first on-off valve 2; the horizontal branch pipe 5 is communicated with a vertical branch pipe 6; a second on-off valve 7 is arranged at the connection between the horizontal branch pipe 5 and the vertical branch pipe 6; and a scale line is arranged on the sampling tube 1. When sampling, the vertical branch pipe 6 is kept closed. When it is necessary to clean the sampling tube 1, the second on-off valve 7 is opened, and the cleaning liquid is poured into one end of the vertical branch pipe 6, so as to flush the sampling tube 1. The scale line can facilitate and quickly observe the volume of the sample.

[0035] The working principle of the utility model is as follows:

[0036] Before sampling, the appropriate operation height is found according to the height of the operator: first, the height of the first screw sleeve 19 relative to the first screw rod 20 can be adjusted by controlling the rotation of the first screw sleeve 19 relative to the first screw rod 20, so that the height of the sampling tube 1 can be adjusted. Then the height of the sampling tube 1 can be specifically adjusted as needed: the rotating shaft 17 is pushed to move into the inner cavity of the protective cover 14, so that the limiting block 27 moves into the inner cavity of the protective cover 14, Figure 2As shown, then rotate the rotating shaft 17, drive gear 13 rotation, thereby driving the rack 10 up and down, rack 10 drive plate 8 in the guide plate 11 in the cavity up and down sliding, thereby driving the clamped sampling tube 1 up and down, the realization of the adjustment of height. After the adjustment is completed, the limit block 27 is rotated to the angle just aligned with the limit notch 28, and then the rotating shaft 17 is pulled outwards, so that the limit block 27 is just moved into the limit notch 28, as shown. Figure 3 As shown, at this time the limit notch 28 restricts the rotation of the limit block 27, and plays a braking role on the rotating shaft 17 and the gear 13.

[0037] When sampling, first control the height of the lifting platform 26 to be lowered, then place the container containing the sample on the lifting platform 26, and make the container located directly below the sampling tube 1, then control the lifting platform 26 to rise until the lower end of the sampling tube 1 is inserted into the sample. When sampling, open the first on-off valve 2, close the second on-off valve 7, slowly pull out the piston of the air cylinder 4, so that the sample solution is sucked into the sampling tube 1 under the action of negative pressure, until the sample gradually rises to reach the predetermined scale. Then control the lifting platform 26 to descend until the container can be taken out, without moving the sampling tube 1 during sampling, avoiding the sampling tube 1 from shaking to make the sample drop, effectively improving the precision of sampling.

[0038] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A sampling device for soil testing, which is easy to operate, comprising a sampling tube (1) and a fixing frame for supporting the sampling tube (1); characterized in that: The fixing frame comprises a mounting plate (8), a guide plate (11), and two fixed plates (9) fixed to the mounting plate (8); one end of the fixed plate (9) is provided with a clamping assembly for clamping a sampling tube (1); the guide plate (11) is provided with a sliding cavity; the mounting plate (8) is in sliding connection with the inner cavity of the guide plate (11); one side of the guide plate (11) is provided with a driving assembly for driving the mounting plate (8) to move up and down; one side of the guide plate (11) is fixed to a first screw sleeve (19) through a connecting rod (18); the first screw sleeve (19) is threadedly mounted on a first screw rod (20), and the lower end of the first screw rod (20) is fixedly connected to a base (21).

2. The sampling device for soil testing that facilitates operation according to claim 1, characterized in that: The driving assembly comprises a rack (10) fixed to the side of the mounting plate (8) away from the fixed plate (9); two mounting seats (12) fixed to the guide plate (11); a rotating shaft (17) rotatably mounted between the two mounting seats (12); the rotating shaft (17) is provided with a gear (13) engaged with the rack (10); the guide plate (11) is provided with an avoiding hole for the gear (13) to penetrate.

3. The sampling device for soil testing that facilitates operation according to claim 2, characterized in that: The surface of the guide plate (11) is fixed with a protective cover (14); the protective cover (14) covers the outside of the gear (13); one side of the protective cover (14) is provided with a limiting notch (28); the rotating shaft (17) is fixed with a limiting block (27); the rotating shaft (17) can slide in the axial direction; the thickness of the gear (13) is greater than the thickness of the rack (10).

4. The sampling device for soil testing that facilitates operation according to claim 3, characterized in that: The rotating shaft (17) is fixed with a limiting ring (30); the limiting points of the two directions of the axial movement of the rotating shaft (17) are in contact with the mounting seat (12) and the outer wall of the protective cover (14) through the limiting ring (30), respectively.

5. The sampling device for soil testing that facilitates operation according to claim 1, characterized in that: The clamping assembly comprises a clamping block (15); the clamping block (15) is divided into a fixed clamping block fixed to the fixed plate (9) and a movable clamping block connected to the fixed clamping block through a bolt (16); one side of the fixed clamping block opposite to the movable clamping block is provided with an arc-shaped groove for clamping the sampling tube (1).

6. The sampling device for soil testing that facilitates operation according to claim 1, characterized in that: The connecting rod (18) is a telescopic rod, and the telescopic rod is connected through a locking screw.

7. The soil testing sampling device of any one of claims 1-6, wherein: It also comprises an air suction cylinder (4) and a lifting platform (26) for placing samples; the top of the sampling tube (1) is in communication with the air inlet of the air suction cylinder (4) through a hose (3).

8. The sampling device for soil testing that facilitates operation according to claim 7, characterized by: It also comprises a bracket for mounting the air suction cylinder (4).

9. The sampling device for soil testing that facilitates operation according to claim 8, characterized by: The bracket comprises a second screw rod (22), a second screw sleeve (23) threadedly connected to the second screw rod (22); the outer wall of the second screw sleeve (23) is fixedly connected with a fixed connecting arm (24), and the fixed connecting arm (24) is connected with a movable arm (29) through a bolt; one end of the fixed connecting arm (24) and the movable arm (29) is fixedly connected with a clamping ring (25) for clamping the air suction cylinder (4).

10. The sampling device for soil testing that facilitates operation according to claim 1, characterized in that: The upper part of the sampling pipe (1) is provided with a first on-off valve (2); the upper part of the sampling pipe (1) is communicated with a transverse branch pipe (5) below the first on-off valve (2); the transverse branch pipe (5) is communicated with a longitudinal branch pipe (6); the connection of the transverse branch pipe (5) and the longitudinal branch pipe (6) is provided with a second on-off valve (7); the sampling pipe (1) is provided with a scale line.

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