Sample screening device for soil pollution detection

Abstract

The invention relates to the technical field of sample detection, and particularly discloses a sample screening device for soil pollution detection, which is used for solving the problem of inconvenience in sampling in the prior art. Comprising a base, a plurality of walking wheels are arranged at the lower end of the base, a supporting cabinet is fixedly arranged at the upper ends of the walking wheels, a pushing handrail is arranged on the side face of the supporting cabinet, a storage part used for storing samples is arranged on the supporting cabinet, a sampling cylinder is arranged on one side of the supporting cabinet, and a material taking motor is arranged at the upper end of the sampling cylinder. And a driving shaft is arranged at the output end of the material taking motor. The sampling device is designed according to existing needs, samples with target depth can be collected according to needs, the obtained samples are crushed and screened, later carrying and storage are facilitated, labor intensity is reduced, the discharging position can be switched during sampling, and waste materials and the target samples can be distinguished conveniently.

Description

Technical Field

[0001] This invention relates to the field of sample testing technology, and in particular to a sample screening device for soil pollution testing. Background Technology

[0002] A soil pollution testing sampling device is a device used to test contaminated soil. Commonly used soil pollution testing sampling devices are usually a cylindrical tube with a toothed bottom and a main rod at the top. This sampling method requires subsequent sieving of the sample and is not easy to obtain samples from deeper parts of the soil. A patent with publication number CN218349836U discloses a soil pollution testing sampling device that can quickly remove the sample from the inside of the sampling tube after it has been collected, thus maintaining the integrity of the sample.

[0003] This method of soil sampling cannot obtain soil samples at the target depth. Although the large soil pieces are intact, most of them are not the target samples and are inconvenient to carry and store. Furthermore, manual sampling is labor-intensive and not conducive to obtaining multiple sets of samples.

[0004] Based on this, a sample screening device for soil pollution detection is now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The purpose of this invention is to provide a sample screening device for soil pollution detection, which solves the problem of inconvenient sampling in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A soil pollution detection sample screening device includes a base with multiple wheels at its lower end and a support cabinet fixedly mounted on the upper end of each wheel. The support cabinet has a push handle on its side and a storage component for storing samples. A sampling cylinder is located on one side of the support cabinet. A material-collecting motor is mounted on the upper end of the sampling cylinder, and a drive shaft is mounted on the output end of the motor. A drill bit for breaking up soil clods is mounted on the lower end of the drive shaft, and lifting blades for pushing the broken soil upwards are mounted on the drive shaft. A screening component for separating target soil clods is mounted on the upper end of the sampling cylinder, and the sampling cylinder is connected to a lifting and pushing component for moving it up and down.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative embodiment: the lifting and pushing component includes a mounting base fixed to the outside of the sampling tube, the mounting base being connected to a guide slider via a crossbar, a lifting guide rod slidingly passing through the guide slider, the lower end of the lifting guide rod being connected to the upper end of the base, the upper end of the lifting guide rod being connected to the mounting side plate on the outside of the support cabinet, a lifting screw block being fixed to the outside of the guide slider, a lifting screw threaded onto the lifting screw block, the lower end of the lifting screw being fixedly connected to the output end of the lifting motor, and the upper end of the lifting screw being rotatably connected to the mounting side plate.

[0008] In one alternative embodiment: the screening component includes a switching barrier rotatably mounted at the top of the sampling cylinder, the upper end of the switching barrier being connected to a rotating disk, the rotating disk being connected to a switching drive for rotating the barrier, and multiple crushing blades for crushing soil clods being distributed on the outer side of the drive shaft where the switching barrier is located, so as to crush the soil clods and facilitate sample collection; two discharge notches are provided on both sides of the upper end of the sampling cylinder, and an movable notch and a screening area are distributed on the surface of the switching barrier.

[0009] In one alternative: a temporary plate is provided on the cross plate between the mounting base and the guide slider, and a buffer groove for buffering soil blocks is configured in the groove of the temporary plate, the buffer groove corresponding to the position of the first discharge guide plate.

[0010] In one alternative embodiment: the outer side of the base is further provided with a positioning component, the positioning component including vertical guide sleeves symmetrically arranged on both sides of the base, a lower pressure sleeve is slidably mounted on the vertical guide sleeve, a positioning side plate is provided at the lower end of the lower pressure sleeve, the top of the lower pressure sleeve is connected to the vertical guide sleeve by a first spring, a lower pressure slide rod is slidably mounted on the upper end of the lower pressure sleeve, the top of the lower pressure slide rod is connected to the lower pressure sleeve by a second spring, the lower pressure slide rod has an L-shaped structure, and lower pressure blocks are symmetrically arranged on the outer side of the guide slider.

[0011] In one alternative: the bottom of the positioning side plate may also be provided with positioning spikes.

[0012] In one alternative: the switching drive includes a driven gear ring disposed on the upper end of the rotating disk, a switching motor is fixedly disposed on the outside of the sampling cylinder, and a drive gear is disposed at the output end of the switching motor, the drive gear meshing with the driven gear ring.

[0013] In one alternative: the storage component includes multiple pull-out slots formed on the side of the support cabinet, each pull-out slot having a pull-out box slidably disposed therein, the pull-out box having a pull ring on the outside, and the inner cavity of the pull-out box having multiple movable partitions that divide the storage area.

[0014] In one alternative: the surface of the pull-out box is covered with label blocks.

[0015] In one alternative: the lifting guide rod is provided with a scale bar.

[0016] In one alternative: the outer side of the crushing blade is further provided with a scraping and cleaning plate for cleaning the screening area.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention is designed to meet existing needs. It can take samples at the target depth as needed. The obtained samples are crushed and screened, which facilitates later carrying and storage, reducing labor intensity. During sampling, the discharge position can also be switched to facilitate the differentiation of waste materials and target samples, further reducing labor intensity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one side of the invention.

[0019] Figure 2 This is a schematic diagram of the other side of the structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the lower structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the sampling tube of the present invention.

[0022] Figure 5 This is a schematic diagram of the drive gear structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the switching enclosure structure of the present invention.

[0024] Attached image annotations: Base 100, Wheels 101; Support cabinet 200, pull-out box 201, pull-out channel 202, movable partition 203, handrail 204; Sampling cylinder 300, temporary plate 301, pressing block 302, drill bit 303, buffer tank 304, mounting base 305, first discharge guide plate 306, second discharge guide plate 307, material handling motor 308, lifting guide rod 309, mounting side plate 310, lifting screw block 311, guide slider 312, lifting screw 313, lifting motor 314, drive gear 315, switching motor 316, rotary disk 317, screening area 318, switching enclosure 319, crushing blade 320, drive shaft 321, discharge notch 322, driven gear ring 323, movable notch 324, lifting blade 325, scraping and cleaning plate 326; Positioning side plate 400, vertical guide sleeve 401, first spring 402, lower pressure sleeve 403, lower pressure slide rod 404, second spring 405. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1-6 As shown, this embodiment of the invention provides a sample screening device for soil pollution detection, including a base 100, a plurality of wheels 101 at the lower end of the base 100, a support cabinet 200 fixed at the upper end of the wheels 101, a push handle 204 on the side of the support cabinet 200, a storage component for storing samples on the support cabinet 200, a sampling cylinder 300 on one side of the support cabinet 200, a material-picking motor 308 at the upper end of the sampling cylinder 300, a drive shaft 321 at the output end of the material-picking motor 308, a drill bit 303 for breaking up soil clods at the lower end of the drive shaft 321, lifting blades 325 for pushing the broken soil upwards on the drive shaft 321, a screening component for separating target soil clods at the upper end of the sampling cylinder 300, and a lifting and pushing component for driving the sampling cylinder 300 to move up and down. The lifting and pushing component includes a mounting base 305 fixed to the outside of the sampling cylinder 300. The mounting base 305 is connected to the guide slider 312 via a crossbar. A lifting guide rod 309 slides through the guide slider 312. The lower end of the lifting guide rod 309 is connected to the upper end of the base 100, and the upper end of the lifting guide rod 309 is connected to the mounting side plate 310 on the outside of the support cabinet 200. A lifting screw block 311 is fixed to the outside of the guide slider 312. A lifting screw 313 is threaded on the lifting screw block 311. The lower end of the lifting screw 313 is fixedly connected to the output end of the lifting motor 314, and the upper end of the lifting screw 313 is rotatably connected to the mounting side plate 310. Under the drive of the lifting motor 314, the lifting screw 313 matches the lifting screw block 311. Under the action of the thread, the guide slider 312 can slide up and down along the lifting guide rod 309, thereby providing power for the lifting and lowering of the sampling cylinder 300. The screening component includes a switching barrier 319 rotatably mounted on the top of the sampling cylinder 300. The upper end of the switching barrier 319 is connected to a rotating disk 317. The rotating disk 317 is connected to a switching drive component for rotating the barrier. Multiple crushing blades 320 for crushing soil clods are distributed on the outer side of the drive shaft 321 where the switching barrier 319 is located, so as to crush the soil clods and facilitate sample collection. The upper end of the sampling cylinder 300 has two discharge notches 322 on both sides. The surface of the switching barrier 319 has a movable notch 324 and a screening area 318. When the movable notch 324 corresponds to the discharge notch 322, the soil clods will be discharged along the movable notch 324, and non-target soil clods will be removed. When the screening area 318 moves to the position of the movable notch 324, the crushed soil clods will be screened by the screening area 318, and the target soil clods will be obtained, thus completing the sampling. A temporary plate 301 is provided on the horizontal plate between the mounting base 305 and the guide slider 312. A buffer groove 304 for buffering soil blocks is configured in the groove of the temporary plate 301. The buffer groove 304 corresponds to the position of the first discharge guide plate 306. The second discharge guide plate 307 is used to remove non-target soil blocks, and the first discharge guide plate 306 is used to discharge target soil blocks. By switching the driving component, the rotating disk 317 is rotated, so that the discharge notch 322 is transferred to the position of the second discharge guide plate 307 to remove the waste. When the drill bit 303 descends to the target depth, the screening area 318 is transferred to the position of the first discharge guide plate 306, so that the broken soil is discharged into the buffer groove 304 along the first discharge guide plate 306 to complete the sampling. The base 100 is also provided with a positioning component on its outer side. The positioning component includes vertical guide sleeves 401 symmetrically arranged on both sides of the base 100. A lower pressure sleeve 403 is slidably mounted on the vertical guide sleeve 401. A positioning side plate 400 is provided at the lower end of the lower pressure sleeve 403. The top of the lower pressure sleeve 403 is connected to the vertical guide sleeve 401 by a first spring 402. A lower pressure slide rod 404 is slidably mounted on the upper end of the lower pressure sleeve 403. The top of the lower pressure slide rod 404 is connected to the lower pressure sleeve 403 by a second spring 405. The lower pressure slide rod 404 has an L-shaped structure. Lower pressure blocks 302 are symmetrically arranged on the outer side of the guide slider 312. When the guide slider 312 is pressed down, the top of the lower pressure slide rod 404 will be pressed, thereby causing the lower pressure sleeve 403 to move downward. The positioning side plate 400 contacts the ground to lock. As the guide slider 312 continues to descend, the lower pressure slide rod 404 will slide downward along the lower pressure sleeve 403, thereby avoiding interference. The bottom of the positioning side plate 400 may also be provided with positioning spikes for fixation in the field; The switching drive includes a driven gear ring 323 disposed on the upper end of the rotating disk 317. A switching motor 316 is fixedly disposed on the outside of the sampling cylinder 300. A drive gear 315 is disposed at the output end of the switching motor 316. The drive gear 315 meshes with the driven gear ring 323. Under the drive of the switching motor 316, the drive gear 315 matches the driven gear ring 323, thereby driving the rotating disk 317 to rotate. The storage component includes multiple pull-out slots 202 opened on the side of the support cabinet 200. Each pull-out slot 202 has a pull-out box 201 slidably disposed therein. The pull-out box 201 has a pull ring on the outside and multiple movable partitions 203 in the inner cavity of the pull-out box 201 to divide the storage area. The multiple movable partitions 203 can divide the storage area into multiple storage areas, thereby completing the classification and storage of samples. The surface of the pull-out box 201 is covered with label blocks for marking and storing samples: The lifting guide rod 309 is provided with a scale bar to control the distance the sampling tube 300 moves downward. The support cabinet 200 is provided with a control panel on its surface. The control panel is electrically connected to the lifting and pushing components and the material picking motor 308 screening components. The outer side of the crushing blade 320 is also provided with a scraping and cleaning plate 326 for cleaning the screening area 318, so as to solve the problem of clogging in the screening area 318.

[0027] Working principle: In actual use, the base 100 is moved to the target position by the handle 204. Then, driven by the lifting motor 314, the lifting screw 313 matches the lifting screw block 311. Under the action of the screw, the guide slider 312 can slide up and down along the lifting guide rod 309, thereby providing power for the lifting of the sampling cylinder 300. When the sampling cylinder 300 descends, the drill bit 303 will break up the soil. The broken soil rises along the sampling cylinder 300 and is finally broken up by the crushing blade 320. By switching the drive component, the rotating disk 317 is rotated, first causing the discharge notch 322 to move to the position of the second discharge guide plate 307 to discharge the waste. When the drill bit 303 descends to the target depth, the screening area 318 is moved to the position of the first discharge guide plate 306, so that the broken soil is discharged into the buffer tank 304 along the first discharge guide plate 306 to complete the sampling. Simply store the target sample in the pull-out box 201.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sample sieving device for soil pollution detection, comprising a base (100) having a plurality of wheels (101) at its lower end, characterized in that: A support cabinet (200) is fixedly provided on the upper end of the walking wheel (101). A push handle (204) is provided on the side of the support cabinet (200). A storage component for storing samples is provided on the support cabinet (200). A sampling tube (300) is provided on one side of the support cabinet (200). A material-taking motor (308) is provided on the upper end of the sampling tube (300). A drive shaft (321) is provided at the output end of the material-taking motor (308). A drill bit (303) for breaking up soil clods is provided at the lower end of the drive shaft (321). A lifting blade (325) for pushing the broken soil upwards is provided on the drive shaft (321). A screening component for separating target soil clods is provided on the upper end of the sampling tube (300). The sampling tube (300) is connected to a lifting and pushing component for driving it to move up and down.

2. The sample screening device for soil pollution detection according to claim 1, characterized in that, The lifting and pushing component includes a mounting base (305) fixed on the outside of the sampling tube (300). The mounting base (305) is connected to the guide slider (312) via a crossbar. A lifting guide rod (309) slides through the guide slider (312). The lower end of the lifting guide rod (309) is connected to the upper end of the base (100). The upper end of the lifting guide rod (309) is connected to the mounting side plate (310) on the outside of the support cabinet (200). A lifting screw block (311) is fixed on the outside of the guide slider (312). A lifting screw (313) is threaded on the lifting screw block (311). The lower end of the lifting screw (313) is fixedly connected to the output end of the lifting motor (314). The upper end of the lifting screw (313) is rotatably connected to the mounting side plate (310).

3. The sample screening device for soil pollution detection according to claim 2, characterized in that, The screening component includes a switching barrier (319) rotatably mounted on the top of the sampling cylinder (300). The upper end of the switching barrier (319) is connected to a rotating disk (317). The rotating disk (317) is connected to a switching drive for rotating it. Multiple crushing blades (320) for crushing soil clods are distributed on the outside of the drive shaft (321) where the switching barrier (319) is located, so as to crush the soil clods and make the sample easy to collect. Two discharge notches (322) are provided on both sides of the upper end of the sampling cylinder (300). A movable notch (324) and a screening area (318) are distributed on the surface of the switching barrier (319).

4. The sample screening device for soil pollution detection according to claim 3, characterized in that, A temporary plate (301) is provided on the cross plate between the mounting base (305) and the guide slider (312). A buffer groove (304) for buffering soil blocks is provided in the groove on the temporary plate (301). The buffer groove (304) corresponds to the position of the first discharge guide plate (306).

5. The soil pollution detection sample screening device according to claim 2, characterized in that, The base (100) is also provided with a positioning component on the outside. The positioning component includes vertical guide sleeves (401) symmetrically arranged on both sides of the base (100). A lower pressure sleeve (403) is slidably mounted on the vertical guide sleeve (401). A positioning side plate (400) is provided at the lower end of the lower pressure sleeve (403). The top of the lower pressure sleeve (403) is connected to the vertical guide sleeve (401) by a first spring (402). A lower pressure slide rod (404) is slidably mounted on the upper end of the lower pressure sleeve (403). The top of the lower pressure slide rod (404) is connected to the lower pressure sleeve (403) by a second spring (405). The lower pressure slide rod (404) has an L-shaped structure. A lower pressure block (302) is symmetrically provided on the outside of the guide slider (312).

6. The sample sieving device for soil pollution detection according to claim 1, characterized in that, The bottom of the positioning side plate (400) may also be provided with positioning spikes.

7. The sample screening device for soil pollution detection according to claim 3, characterized in that, The switching drive includes a driven gear ring (323) disposed on the upper end of the rotating disk (317), and a switching motor (316) is fixedly disposed on the outside of the sampling cylinder (300). The output end of the switching motor (316) is provided with a drive gear (315), and the drive gear (315) meshes with the driven gear ring (323).

8. The sample screening device for soil pollution detection according to claim 1, characterized in that, The storage component includes multiple pull-out slots (202) opened on the side of the support cabinet (200), and a pull-out box (201) is slidably provided in each pull-out slot (202). The pull-out box (201) is provided with a pull ring on the outside and multiple movable partitions (203) that divide the storage area are provided in the inner cavity of the pull-out box (201).

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