A soil testing sieving device

Abstract

This invention provides a soil testing sieving device, including a base, a cylindrical body mounted on the base with a supporting spring between the cylinder and the base, and a driving assembly on the base to drive the cylinder to vibrate on the base. A support rod is located inside the cylinder, with a threaded rod and a clamping head at its top. A screen is also located inside the cylinder, abutting against the top surface of the support rod, and having a through hole for the threaded rod and clamping head to pass through. The side of the clamping head has a clamping part that abuts against the screen and presses the screen onto the support rod. The screen has a slot for the clamping part to pass through, and the slot communicates with the through hole. When the clamping head rotates on the threaded rod, the clamping part aligns with or is misaligned with the slot. This invention solves the technical problem of existing soil sieves being unable to disassemble and replace the screen according to the required soil particle size, resulting in a technical effect of easily disassembling and replacing the screen to meet the needs of obtaining soil particles of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, and in particular to a sieving device for soil testing. Background Technology

[0002] Soil is a loose layer of material on the Earth's surface, composed of minerals formed from the weathering of rocks, organic matter produced by the decomposition of plant and animal remains and microbial remains, soil organisms, as well as water, air, and oxidized humus. In order to analyze soil particles more accurately, they need to be sieved to obtain particles of suitable size for analysis and to remove impurities.

[0003] Chinese utility model patent CN220941644U discloses a novel soil sieve, comprising a chassis and a sieve cylinder. A discharge nozzle is fixedly installed on the chassis, with its first end connected to the interior of the chassis and its second end extending outward. A switch assembly is provided on the second end of the discharge nozzle to control its opening and closing. During sieving, the switch assembly closes the discharge nozzle; after sieving, the nozzle is inserted into a sample bag, and then opened to allow soil particles from the chassis to fall into the sample bag. This design saves operational steps and improves work efficiency.

[0004] When using the above-mentioned soil sieve, soil samples are loaded into the sieve cylinder for sieving. Qualified soil particles will pass through the sieve cylinder and fall into the sieve tray, while soil particles with excessively large diameters and impurities will remain in the sieve cylinder. However, since the diameter of the mesh of the sieve inside the sieve cylinder is fixed, it is impossible to disassemble and replace the sieve according to the required particle size of the soil particles, which makes the use of the soil sieve inconvenient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a soil testing screening device that solves the problem that existing soil sieves cannot be disassembled and replaced according to the required soil particle size.

[0006] According to an embodiment of this utility model, a soil testing screening device includes a base, a cylindrical body on the base, and a supporting spring between the cylindrical body and the base. The base also includes a drive assembly connected to the cylindrical body for driving the cylindrical body to vibrate on the base. A support rod is provided inside the cylindrical body, with a threaded rod and a clamping head cooperating with the threaded rod at its top. A screen is also provided inside the cylindrical body, abutting against the top surface of the support rod. The screen has a through hole through which the threaded rod and the clamping head pass. The side of the clamping head has a clamping part that abuts against the screen and presses the screen against the support rod. The screen has a slot through which the clamping part passes, and the slot communicates with the through hole. When the clamping head rotates on the threaded rod, the clamping part aligns with or is misaligned with the slot.

[0007] Furthermore, the base is provided with a first mounting cylinder and the cylinder body is provided with a second mounting cylinder aligned with the first mounting cylinder. One end of the support spring is engaged with the first mounting cylinder and the other end is engaged with the second mounting cylinder.

[0008] Furthermore, the drive assembly includes an eccentric shaft rotatably mounted on the base and a drive motor for driving the eccentric shaft to rotate. The eccentric shaft is provided with a rotatable connecting rod, and the end of the connecting rod away from the eccentric shaft is rotatably connected to the cylinder.

[0009] Furthermore, the output end of the drive motor is provided with a first gear, and one end of the eccentric shaft is provided with a second gear that meshes with the first gear.

[0010] Furthermore, the cylinder is also provided with a discharge pipe, and the end of the discharge pipe away from the cylinder is provided with a discharge port. The end of the discharge pipe away from the cylinder is rotatably connected to an end cap, and the end cap is provided with a through groove. When the end cap rotates, the through groove is connected to or misaligned with the discharge port.

[0011] Furthermore, the bottom of the inner wall of the cylinder is provided with a guide surface, and the height of the end of the guide surface near the discharge pipe is lower than the height of the end of the guide surface away from the discharge pipe.

[0012] Furthermore, the screen includes a mounting ring that fits against the inner wall of the cylinder.

[0013] Furthermore, the inner wall of the cylinder is provided with a stepped portion, which abuts against the mounting ring.

[0014] Furthermore, a top cover is hinged to the cylinder body, and the top cover covers the opening of the cylinder body.

[0015] Furthermore, the top cover is provided with a handle, which is located on the side of the top cover.

[0016] Compared with existing technologies, this utility model has the following advantages: By using a sieve set inside the cylinder to screen soil samples, the soil sample falls onto the sieve after being poured into the cylinder. The driving component drives the cylinder to vibrate on the base to screen the soil sample. The screened soil particles pass through the mesh of the sieve and fall to the bottom of the cylinder, while other soil particles with excessively large diameters and impurities remain on the sieve. When it is necessary to clean the sieve or replace it with a sieve of a different mesh size, rotate the clamping head to align the clamping part with the slot. At this time, the sieve can be removed from the cylinder. When installing a new sieve, the clamping head passes through the through holes and slots of the sieve so that the sieve can be placed on the support rod. Then rotate the clamping head to make the clamping part abut against the sieve and misalign with the slot, thus fixing the sieve inside the cylinder. This solves the technical problem that existing soil sieves cannot disassemble and replace the sieve according to the required soil particle size. It produces the technical effect of being able to easily disassemble and replace the sieve, meeting the needs of obtaining soil particles of different sizes. Moreover, it is simple to operate and easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a soil testing screening device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of the sieve in a soil testing sieve device according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of a soil testing sieving device according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0022] In the above figures: 100, base; 101, support spring; 102, first mounting cylinder; 200, cylinder body; 201, support rod; 202, threaded rod; 203, clamping head; 204, clamping part; 205, second mounting cylinder; 206, discharge pipe; 207, discharge port; 208, end cap; 209, through groove; 210, guide surface; 211, step part; 300, drive assembly; 301, eccentric shaft; 302, drive motor; 303, connecting rod; 304, first gear; 305, second gear; 400, screen; 401, through hole; 402, slot; 403, mounting ring; 500, top cover; 501, handle. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a sieving device for soil testing, which is used to sieve soil samples during the soil testing process to obtain soil particles of suitable size for analysis and to remove impurities from the soil samples.

[0025] Please refer to Figures 1 to 4 The soil testing screening device includes a base 100, a cylinder 200 mounted on the base 100, and a support spring 101 between the cylinder 200 and the base 100. The base 100 also includes a drive assembly 300 connected to the cylinder 200 for driving the cylinder 200 to vibrate on the base 100. A support rod 201 is located inside the cylinder 200, and a threaded rod 202 and a clamping head 203 cooperating with the threaded rod 202 are located at the top of the support rod 201. A screen 400 is also located inside the cylinder 200, abutting against the top surface of the support rod 201. The screen 400 has a through hole 401 for the threaded rod 202 and the clamping head 203 to pass through. A pressing part 204 is provided on the side to abut against the screen 400 and press the screen 400 onto the support rod 201. The screen 400 is provided with a slot 402 through which the pressing part 204 passes and the slot 402 communicates with the through hole 401. When the pressing head 203 rotates on the threaded rod 202, the pressing part 204 is aligned or misaligned with the slot 402. When the pressing part 204 is aligned with the slot 402, the pressing head 203 can pass through the through hole 401 to remove the screen 400 from the cylinder 200 or put it into the cylinder 200. When the pressing part 204 is misaligned with the slot 402, the pressing head 203 cannot pass through the through hole 401. At this time, the screen 400 is locked inside the cylinder 200 by the pressing head 203.

[0026] Specifically, the operation steps for sieving soil samples using the soil testing sieving device provided in this embodiment are as follows: The soil sample is poured into the cylinder 200 so that it falls onto the sieve 400. The drive assembly 300 is activated to drive the cylinder 200 to vibrate on the base 100. As the base 100 vibrates, the sieve 400 sieves the soil sample. The sieved soil particles pass through the mesh of the sieve 400 and fall to the bottom of the cylinder 200, while other soil particles with excessively large diameters and impurities remain on the sieve 400. After sieving, the drive assembly 300 is turned off, and the sieved soil particles are removed from the bottom of the cylinder 200 for testing. The sieve 400 needs to be cleaned or replaced. When the screen 400 has a mesh size of [size missing], rotate the pressing head 203 to align the pressing part 204 with the slot 402. At this time, the pressing head 203 can pass through the through hole 401 and the slot 402 to remove the screen 400 from the cylinder 200. When inserting a new screen 400, first place the screen 400 on the support rod 201. During the insertion of the screen 400, the pressing head 203 passes through the through hole 401 and the slot 402. Then rotate the pressing head 203 to make the pressing part 204 abut against the screen 400 and misalign with the slot 402. At this time, the pressing head 203 presses the screen 400 onto the support rod 201 and fixes the screen 400 inside the cylinder. The soil testing screening device provided in this embodiment allows for easy disassembly and replacement of the screen 400 to meet the needs of obtaining soil particles of different sizes. It is also simple to operate and easy to use.

[0027] like Figure 4 As shown, the base 100 is provided with a first mounting cylinder 102, and the cylinder body 200 is provided with a second mounting cylinder 205 aligned with the first mounting cylinder 102. One end of the support spring 101 engages with the first mounting cylinder 102, and the other end engages with the second mounting cylinder 205. The first mounting cylinder 102 on the base 100 and the second mounting cylinder 205 on the cylinder body 201 provide mounting for the support spring 101, ensuring stability of the support spring 101 between the base 100 and the cylinder body 200, thereby improving the structural stability of the soil testing screening device.

[0028] Please combine Figure 1 and Figure 4The drive assembly 300 includes an eccentric shaft 301 rotatably mounted on the base 100 and a drive motor 302 that drives the eccentric shaft 301 to rotate. A rotatable connecting rod 303 is mounted on the eccentric shaft 301, and one end of the connecting rod 303 away from the eccentric shaft 301 is rotatably connected to the cylinder 200. The drive motor 302 drives the eccentric shaft to rotate, causing the connecting rod 303 to move, resulting in the cylinder 200 reciprocating vertically under the pull of the connecting rod 303. During the vibration of the cylinder 200, the support spring 101 extends and retracts with the movement of the cylinder 200, ensuring that the position of the cylinder 200 on the base 100 remains stable and effectively screening the soil sample placed inside the cylinder 200.

[0029] In detail, the output end of the drive motor 302 is provided with a first gear 304, and one end of the eccentric shaft 301 is provided with a second gear 305 that meshes with the first gear 304. Through the cooperation of the first gear 304 and the second gear 305, the power output by the drive motor 302 is transmitted to the eccentric shaft 301 to drive the eccentric shaft 301 to rotate. This allows the eccentric shaft 301 to rotate smoothly while simultaneously causing the cylinder 200 to vibrate, thus ensuring the stable operation of the soil testing screening device.

[0030] Please refer to Figure 1 , Figure 4 and Figure 5 The cylinder 200 is also provided with a discharge pipe 206. The end of the discharge pipe 206 away from the cylinder 200 is provided with a discharge port 207. The end of the discharge pipe 206 away from the cylinder 200 is rotatably connected to an end cap 208, and the end cap 208 is provided with a through groove 209. When the end cap 208 rotates, the through groove 209 is connected to or misaligned with the discharge port 207. The discharge pipe 206 is used to guide the soil particles falling at the bottom of the cylinder 200 out of the cylinder 200, so as to facilitate the collection of the screened soil particles for subsequent testing. During the soil sample screening process, the through groove 209 and the discharge port 207 are misaligned, so that the discharge port 207 is closed by the end cap 208 to prevent soil particles from scattering outside the cylinder 200 during the vibration of the cylinder 200. After screening is completed, the drive assembly 300 is turned off and the end cap 208 is rotated to connect the through groove 209 and the discharge port 207. At this time, the soil particles at the bottom of the cylinder 200 are discharged from the discharge port 207. The soil particles can be collected into the collection bag by placing the collection bag at the discharge port 207.

[0031] In this embodiment, a guide surface 210 is provided at the bottom of the inner wall of the cylinder 200. The height of the end of the guide surface 210 near the discharge pipe 206 is lower than the height of the end of the guide surface 210 away from the discharge pipe 206. By providing the guide surface 210 inside the cylinder 200, soil particles falling at the bottom of the cylinder 200 are guided to move towards the discharge pipe 206, preventing soil particles from remaining in the cylinder 200 and causing sample loss, and facilitating the cleaning of the inside of the soil testing sieving device.

[0032] like Figure 3 and Figure 4 As shown, the sieve 400 includes a mounting ring 403, which fits against the inner wall of the cylinder 200. The mounting ring 403 at the edge of the sieve 400 improves its structural strength, and the fit between the sieve 400 and the inner wall of the cylinder 200 prevents soil samples from falling between the sieve 400 and the inner wall of the cylinder 200, thereby improving the reliability of the soil testing sieving device.

[0033] Specifically, the inner wall of the cylinder 200 is provided with a stepped portion 211, which abuts against the mounting ring 403. The stepped portion 211 on the inner wall of the cylinder 200 supports the screen 400, which helps to improve the stability of the screen 400 within the cylinder 200.

[0034] like Figure 1 As shown, a top cover 500 is hinged to the cylinder 200, and the top cover 500 covers the opening of the cylinder 200. The top cover 500, hinged to the cylinder 200, is used to close the opening of the cylinder 200 during the operation of the soil testing screening device, preventing soil samples from falling out of the top opening of the cylinder 200 and causing contamination when the cylinder 200 vibrates. The cylinder 200 can be opened or closed simply by rotating the top cover 500, making operation simple.

[0035] In detail, the top cover 500 is provided with a handle 501, which is located on the side of the top cover 500. By operating the handle 501, the top cover 500 can be rotated to open the cylinder 200 and pour in the soil sample during the use of the soil testing sieving device.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sieving device for soil testing, characterized in that: The device includes a base, a cylindrical body mounted on the base, and a support spring between the cylindrical body and the base. The base also includes a drive assembly connected to the cylindrical body for driving the cylindrical body to vibrate on the base. The cylindrical body contains a support rod with a threaded rod at its top and a clamping head that engages with the threaded rod. The cylindrical body also contains a screen that abuts against the top surface of the support rod and has a through hole through which the threaded rod and clamping head pass. The side of the clamping head has a clamping part that abuts against the screen and presses the screen against the support rod. The screen has a slot through which the clamping part passes and communicates with the through hole. When the clamping head rotates on the threaded rod, the clamping part aligns with or is misaligned with the slot.

2. The soil testing screening device as described in claim 1, characterized in that: The base is provided with a first mounting cylinder and the cylinder body is provided with a second mounting cylinder aligned with the first mounting cylinder. One end of the support spring is engaged with the first mounting cylinder and the other end is engaged with the second mounting cylinder.

3. The soil testing screening device as described in claim 1, characterized in that: The drive assembly includes an eccentric shaft rotatably mounted on the base and a drive motor for driving the eccentric shaft to rotate. The eccentric shaft is provided with a rotatable connecting rod, and the end of the connecting rod away from the eccentric shaft is rotatably connected to the cylinder.

4. The soil testing screening device as described in claim 3, characterized in that: The output end of the drive motor is provided with a first gear, and one end of the eccentric shaft is provided with a second gear that meshes with the first gear.

5. A soil testing sieving device as described in claim 1, characterized in that: The cylinder is also provided with a discharge pipe, and the end of the discharge pipe away from the cylinder is provided with a discharge port. The end of the discharge pipe away from the cylinder is rotatably connected to an end cap, and the end cap is provided with a through groove. When the end cap is rotated, the through groove is connected to or misaligned with the discharge port.

6. The soil testing screening device as described in claim 5, characterized in that: The bottom of the inner wall of the cylinder is provided with a guide surface, and the height of the end of the guide surface near the discharge pipe is lower than the height of the end of the guide surface away from the discharge pipe.

7. A soil testing sieving device as described in claim 1, characterized in that: The screen includes a mounting ring, which is fitted to the inner wall of the cylinder.

8. A soil testing screening device as described in claim 7, characterized in that: The inner wall of the cylinder is provided with a stepped portion, which abuts against the mounting ring.

9. A soil testing sieving device as described in claim 1, characterized in that: A top cover is hinged to the cylinder body, and the top cover covers the opening of the cylinder body.

10. A soil testing sieving device as described in claim 9, characterized in that: The top cover is provided with a handle, which is located on the side of the top cover.

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