Soil sample screening device

Abstract

The utility model discloses a soil sample screening device and belongs to the technical field of soil sample screening equipment. The soil sample screening device comprises a main machine and a plurality of screen frames fixedly stacked on the main machine, each screen frame comprises a screen frame, a main screen and a discharging channel, the side wall of each screen frame is communicated with the corresponding discharging channel, and the bottom face of the inner wall of each discharging channel is flush with the top face of the corresponding main screen; the soil sample screening device has the advantages that the manual operation time is saved, and the soil sample screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sample screening equipment, in particular to a soil sample sieve. Background Art

[0002] A soil sample sieve is a device used to separate soil particles of different particle sizes, mainly used in fields such as soil particle analysis, soil texture determination, and soil physical property research. By using sieves with different pore sizes, the particles in the mixed soil sample are separated according to size, so as to obtain soil samples with different particle sizes.

[0003] The soil sample sieve plays an important role in soil science research. It can help soil researchers understand the distribution of particles with different particle sizes in the soil sample.

[0004] The existing soil sample sieves usually consist of a sieve frame and a main machine, etc. When in use, the soil sample is poured into the topmost sieve frame. After starting the main machine, under the vibration of the main machine, the soil sample is sieved layer by layer through the sieve, and soil particles of different particle sizes are separated, and then put into sample bags for storage and standby. Each screening operation requires dividing the soil into multiple samples with different particle sizes, and then separately bagging the samples in each sieve frame. The bagging work takes a lot of manual time in the whole screening work, affecting the screening efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the bagging work takes a lot of time when the existing soil sample sieve is in use, and a soil sample sieve is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The soil sample sieve includes a main machine and a plurality of sieve frames fixedly stacked on the main machine. The sieve frame includes a sieve frame, a main sieve, and a discharge channel. The discharge channel is communicated with the side wall of the sieve frame, and the bottom surface of the inner wall of the discharge channel is aligned with the top surface of the main sieve.

[0008] Further, the main sieve is a conical mesh surface structure with a high middle and a low edge.

[0009] Further, a spiral baffle for forming a feeding channel is arranged on the main sieve, a conical collecting hopper with a low middle and a high edge is arranged at the bottom of the main sieve, and a hopper opening is formed in the middle of the collecting hopper.

[0010] Further, the center of the spiral baffle is aligned with the center of the sieve frame, and the end of the spiral baffle far from the center is aligned with the inlet of the discharge channel.

[0011] Further, an annular convex rib is provided at one end of the discharge channel away from the sieve frame.

[0012] Further, a heightening seat is provided on the main machine, and a plurality of the sieve frames are fixedly stacked on the heightening seat.

[0013] Further, a fastening structure is further included, and a plurality of stacked sieve frames are fixed to the main machine through the fastening structure.

[0014] Further, the fastening structure includes screws distributed around the sieve frame and a cover plate pressed on the uppermost sieve frame, and the cover plate is detachably penetrated on the screws.

[0015] Compared with the prior art, the present utility model provides a soil sample sieve, which has the following beneficial effects:

[0016] When the soil sample sieve of the present utility model is in use, the soil sample is poured into the uppermost sieve frame. After all the sieve frames are fixed, the sample bag for storing the soil is sleeved on the outlet of the discharge channel, and the main machine is started. Under the vibration of the main machine, after the soil sample is sieved by the main sieve, it flows out from the discharge channels corresponding to each sieve frame and falls into the sample bag. After all the soil is sieved, all the soil samples are also filled into the corresponding sample bags. The staff only needs to remove the sample bag and seal it. Compared with the prior art, a large amount of bagging time is saved and the sieving efficiency is improved.

[0017] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent description; and to some extent, based on the study of the following text, it will be obvious to those skilled in the art; or, it can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a three-dimensional schematic diagram of the sieve frame structure of the present utility model from the upper right perspective;

[0020] Figure 3 is of the present utility model Figure 2 partial enlarged schematic diagram of the structure at part A in

[0021] Figure 4 is a three-dimensional schematic diagram of the sieve frame structure of the present utility model from the lower right perspective;

[0022] Figure 5 is a right view schematic diagram of the sieve frame structure of the present utility model;

[0023] Figure 6This is the front view schematic diagram of the spiral baffle structure of the present utility model.

[0024] In the figure:

[0025] 1. Main machine; 101. Heightening seat; 2. Screen frame; 201. Screen frame; 202. Main screen; 203. Discharge channel; 204. Spiral baffle; 205. Convex rib; 206. Aggregating hopper; 207. Hopper opening; 3. Fastening structure; 301. Screw; 302. Cover plate. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] Refer to Figures 1-6 , the soil sample sieve of the present utility model includes a main machine 1 and a plurality of screen frames 2 fixedly stacked on the main machine 1. A vibration mechanism is installed inside the main machine 1. The top of the vibration mechanism is a disc-shaped vibration table installed at the top end of the main machine 1. A plurality of screen frames 2 are fixedly stacked on the vibration table.

[0028] The screen frame 2 includes a screen frame 201, a main screen 202, and a discharge channel 203. The discharge channel 203 is communicated with the side wall of the screen frame 201. The bottom surface of the inner wall of the discharge channel 203 is aligned with the top surface of the main screen 202. When in use, first put the sample bag on the outlet of the discharge channel 203. After starting the main machine, when the material is screened in the screen frame 2, the specified particle size of the soil sample screened out on each main screen 202 flows out along the top surface of the main screen 202 from the discharge channel 203 and flows into the sample bag.

[0029] The screening principle is the same as that of the existing sieve. During screening, the soil samples screened out in each screen frame 2 are directly sent into the sample bag, thus replacing the manual bagging operation, saving the operation time of the overall screening work, and improving the screening efficiency.

[0030] The bagging operation is time-consuming and laborious, mainly from two aspects. One is that there are many screen frames 2, and it is necessary to repeat the action many times to pour the screened soil samples in the screen frames into the sample bags respectively. The other is that the size of the screen frame is much larger than that of the sample bag. Considering the operation environment in the laboratory during bagging, in order to avoid the soil samples spilling onto the workbench, it is necessary to carefully pick up the screen frame with both hands each time when bagging, and at the same time, hold and unfold the sample bag with both hands, and then slowly pour the sample into the sample bag.

[0031] The discharge channel 3 has a funnel-shaped structure with a large inlet and a small outlet, and the discharge channel 3 has a bent L-shaped structure, so that the outlet of the discharge channel 3 faces downward, and the caliber of the outlet is smaller than the caliber of the opening of the sample bag. When in use, the sample bag is sleeved at the outlet to receive the soil sample.

[0032] The main sieve mesh 202 has a conical mesh surface structure with a high middle and a low edge.

[0033] It is convenient for the soil sample to flow and be screened from high to low during the vibration screening process, avoiding the accumulation of soil samples together. The flowing soil sample flows out from the discharge channel 3.

[0034] A spiral baffle 204 forming a feeding channel is installed on the main sieve mesh 202, and a conical material collecting hopper 206 with a low middle and a high edge is installed at the bottom of the main sieve mesh 202. A hopper opening 207 is provided in the middle of the material collecting hopper 206.

[0035] The center of the spiral baffle 204 is aligned with the centers of the main sieve mesh 202 and the sieve frame 201, and the edge of the spiral baffle 204 is aligned with the side wall of the sieve frame 201 and the edge of the main sieve mesh 202. After the soil sample is screened and falls from the main sieve mesh 202, it falls onto the material collecting hopper 206, and then falls from the hopper opening 207 to the center of the main sieve mesh 202 and the spiral baffle 206 in the lower-layer sieve mesh frame 2. Under the action of vibration, it flows along the middle of the main sieve mesh 202 towards the edge and along the spiral baffle 204. The flow length during screening is increased by the spiral baffle 204, avoiding the situation that there are unscreened soil samples flowing out from the discharge channel 203, and ensuring the screening effect.

[0036] An annular convex rib 205 is integrally formed at one end of the discharge channel 203 far away from the sieve frame 201. When sleeving the sample bag, the opening of the sample bag is sleeved above the convex rib 205, and the sample bag is fixed at the outlet of the discharge channel 203 by using a rubber ring, a rubber band, or a clip, etc. The convex rib 205 can effectively prevent the sample bag from falling off.

[0037] A heightening seat 101 is installed on the main machine 1, and multiple sieve mesh frames 2 are fixedly stacked on the heightening seat 101. The heightening seat 101 can effectively increase the height of the lowermost sieve mesh frame 2, so that there is a sufficient height difference between the discharge channel 3 and the top end face of the main machine 1, which is convenient for sleeving the sample bag.

[0038] This screening device further includes a fastening structure 3. Multiple stacked sieve mesh frames 2 are fixed on the main machine 1 through the fastening structure 3. The fixing method of the sieve mesh frame 2 of this screening device is the same as that of the traditional screening device, realizing the detachable installation of the sieve mesh frame 2, which is convenient for cleaning each sieve mesh frame 2 after disassembly.

[0039] The fastening structure 3 includes screw rods 301 distributed around the screen frame 2 and a cover plate 302 pressed on the uppermost screen frame 2. The cover plate 302 is detachably passed through the screw rods 301. After pouring the soil sample into the uppermost screen frame 2, the cover plate 302 is used to cover the uppermost screen frame 2. The cover plate 302 is simultaneously passed through the screw rods 301, and then fixed with nuts.

[0040] Working principle: During use, open the cover plate 302, pour the soil sample into the middle position of the uppermost screen frame 2, then cover the cover plate 302 well, put the sample bag on the outlet of each discharge pipe 203, and start the main machine 1.

[0041] Under the vibration of the main machine 1, the soil sample flows from the middle to the edge of the main screen 202 along the extension direction of the spiral baffle 204. During the flowing process, the soil sample falls through the sieve holes of the main screen 202. The soil sample with the specified particle size finally flows out from the corresponding discharge channel 203 and falls into the sample bag. When the screening of the sample by this screening device is completed, the sample is also bagged at the same time, saving the manual operation time and improving the screening efficiency.

[0042] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A soil sample sifter, comprising a main machine (1) and a plurality of sieve frames (2) fixedly stacked on the main machine (1), characterized in that: The screen frame (2) comprises a screen frame (201), a main screen (202), and a discharge channel (203); a side wall of the screen frame (201) is connected to the discharge channel (203); and an inner wall bottom surface of the discharge channel (203) is aligned with a top surface of the main screen (202).

2. The soil sample sifter according to claim 1, characterized in that: The main screen (202) is a conical screen structure with a high middle and low edges.

3. The soil sample sifter according to claim 2, characterized in that: The main screen (202) is provided with a spiral baffle (204) forming a feeding channel, and the bottom of the main screen (202) is provided with a conical material collecting hopper (206) with a lower middle and higher edges, and a hopper opening (207) is provided in the middle of the material collecting hopper (206).

4. The soil sample sifter according to claim 3, characterized in that: The center of the spiral baffle (204) is aligned with the center of the screen frame (201), and the end of the spiral baffle (204) away from the center is aligned with the inlet of the discharge channel (203).

5. The soil sample sifter according to claim 1, characterized in that: An annular convex ridge (205) is provided at one end of the discharge channel (203) away from the screen frame (201).

6. The soil sample sifter according to claim 1, characterized in that: The main machine (1) is provided with a raised seat (101), and a plurality of the screen frames (2) are fixedly stacked on the raised seat (101).

7. The soil sample sifter according to claim 1, characterized in that: It also includes a fastening structure (3), and a plurality of stacked screen frames (2) are fixed to the main machine (1) via the fastening structure (3).

8. The soil sample sifter according to claim 7, characterized in that: The fastening structure (3) comprises screw rods (301) distributed around the screen frame (2) and a cover plate (302) pressed onto the uppermost screen frame (2), wherein the cover plate (302) is detachably inserted into the screw rods (301).

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