Laboratory soil sample crushing and grading screening device

Abstract

The utility model discloses a laboratory soil sample crushing and grading screening device which comprises a treatment box, a plurality of crushing assemblies and a screening plate are arranged in the treatment box from top to bottom, and grading crushing and grading screening treatment on soil samples are achieved through cooperation of the crushing assemblies and the screening plate. A circulating box is installed on the side portion of the treatment box to crush the soil samples with unqualified sizes again, one end of the sieve plate extends out of the treatment box through a side discharging opening in the side portion of the treatment box, and the soil samples with different sizes can be crushed, screened and discharged by adjusting the inclination of the sieve plate. And multi-stage fine screening and differentiated screening collection of soil samples can be carried out, and the use flexibility and functionality are higher.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to a laboratory soil sample crushing and grading screening device. Background Art

[0002] At present, the problem of soil environmental pollution has gradually attracted people's attention, and the research on soil pollution control is also steadily moving forward. When conducting soil pollution control research, it is necessary to test and analyze the physical and chemical properties and pollutant indicators of the soil. In view of the different requirements for soil particle size for different test and analysis contents, studies have shown that different soil sample particle sizes have a certain impact on the accuracy and precision of the analysis results of physical and chemical properties, so it is necessary to screen the soil particle size for different experimental projects. For example, soil samples used to determine soil organic matter, heavy metals, etc. need to pass through a 0.25 mm pore size sieve, soil samples used to determine soil pH and available nutrients need to pass through a 1 mm pore size sieve, and soil samples used for soil physical property analysis need to pass through a 2 mm pore size sieve, and so on.

[0003] In the existing technology, the traditional method of manual grinding and screening is usually used in laboratory experiments, which is not only laborious, but also slow and inefficient. Although there are some grinding and screening products on the market, most of them are independent functional equipment, and generally have problems such as large size, inconvenient use, and difficult equipment cleaning. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a laboratory soil sample crushing and grading screening device.

[0005] The utility model laboratory soil sample crushing and grading screening device comprises a processing box, the top and bottom of the processing box are respectively provided with a feed port and a discharge port, the inner cavity of the processing box is divided into more than three chambers by more than two sieve plates, the sieve hole apertures on more than two sieve plates gradually decrease from top to bottom, the discharge port is arranged at the bottom of the bottom chamber, and the other chambers are all provided with crushing components, a driving box is installed at a position corresponding to the crushing component on the outside of the processing box, a driving component is arranged in the driving box, and the driving component is connected with the crushing component; 2 There are more than one side discharge port, and more than two lower connecting ports are opened on the right side. Both ends of the sieve plate are respectively arranged in the side discharge port and the lower connecting port. An adjusting component is arranged on the left end of the sieve plate, which is used to adjust the inclination angle of the sieve plate in the processing box; a placing rack is arranged on the left side of the processing box and is located below the side discharge port, and the collecting frame is placed on the placing rack. There are more than two circulation boxes on the right side of the processing box, and a second driving member and a spiral conveying rod connected thereto are arranged in the circulation box. The upper connecting port is opened on the right side wall of the processing box and is located on the upper part of the circulation box, and the lower connecting port is located at the bottom of the circulation box.

[0006] The processing box is installed on the base.

[0007] The crushing assembly comprises two crushing rollers which cooperate with each other, and the roller shafts of the crushing rollers are connected to the driving assembly in the driving box.

[0008] The driving assembly comprises a first driving member and two mutually meshing transmission gears, one transmission gear is fixedly connected to the first driving member, and the other transmission gear is fixedly connected to a crushing roller of the crushing assembly.

[0009] The adjustment component includes a connecting rope, a hook, and a hanging rod. One end of the connecting rope is fixedly connected to the left end of the screen plate, and the other end is fixedly connected to the hook. The two hanging rods are fixed on the left side of the processing box and located above the side discharge port. The hook and the hanging rod cooperate with each other.

[0010] The first driving element is a DC multi-V belt electric roller, and the second driving element is a motor.

[0011] A guide plate is obliquely arranged above the crushing assembly.

[0012] The right end of the sieve plate is movably arranged on the right side wall of the processing box through a rotating shaft and is located at the bottom of the lower connecting port.

[0013] The utility model has the following advantages: the equipment realizes graded crushing and graded screening of soil samples through the cooperation of several crushing components and sieve plates; soil samples with unqualified sizes are transported to the corresponding crushing components for re-crushing through a circulation box until soil samples with qualified sizes are crushed and screened out; the angle of the sieve plate can be adjusted through the cooperation of connecting ropes, hanging rods and hooks, and soil samples of different sizes can be discharged through the side discharge port to facilitate the experiment; the overall equipment has a simple structure and is easy to operate; it can perform multi-level fine screening and differentiated screening and collection of soil samples, and has higher flexibility and functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the device of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the device of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the device of the utility model;

[0017] Figure 4 It is the structural schematic diagram of the sieve plate;

[0018] Figure 5 It is a schematic diagram of the structure of the drive component;

[0019] In the figure: 1-base, 2-processing box, 3-feed port, 4-discharge port, 5-drive box, 6-first drive member, 7-roller, 8-crushing roller, 9-transmission gear, 10-circulation box, 11-lower connecting port, 12-upper connecting port, 13-second drive member, 14-screw conveying rod, 15-sieve plate, 16-rotating shaft, 17-side discharge port, 18-connecting rope, 19-hook, 20-hanging rod, 21-placing rack, 22-collection frame, 23-guide plate. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0021] Example 1: Figure 1-5 As shown, the laboratory soil sample crushing and grading screening device includes a processing box 2, the top and bottom of the processing box are respectively provided with a feed port 3 and a discharge port 4, the inner cavity of the processing box is divided into three chambers by two sieve plates 15, the sieve hole aperture on the first sieve plate from top to bottom is larger than the sieve hole aperture on the second sieve plate, the discharge port 4 is arranged at the bottom of the bottom chamber, and the remaining chambers are provided with crushing components, the crushing component includes two crushing rollers 8 that cooperate with each other, a driving box is installed at a position corresponding to the crushing component on the outside of the processing box, and a driving component is arranged in the driving box, the driving component includes a first driving member 6 and two mutually meshing transmission gears 9, one transmission gear is fixedly connected to the first driving member 6, and the other transmission gear is fixedly connected to a crushing roller of the crushing assembly, and the first driving member is a DC multi-wedge belt electric Moving drum; Two side discharge ports 17 are opened on the left side of the processing box 2, and two lower connecting ports 11 are opened on the right side. The two ends of the sieve plate 15 are respectively arranged in the side discharge ports 17 and the lower connecting ports 11. An adjustment component is arranged on the left end of the sieve plate 15 for adjusting the inclination angle of the sieve plate in the processing box; the adjustment component includes a connecting rope 18, a hook 19, and a hanging rod 20. One end of the connecting rope 18 is fixedly connected to the left end of the sieve plate 15, and the other end is fixedly connected to the hook 19. The two hanging rods 20 are fixed to the left side of the processing box 2 and are located above the side discharge port 17. The hook 19 and the hanging rod 20 cooperate with each other. The setting position of the hanging rod 20 corresponds to the setting length of the connecting rope 18. When the hook 19 is hung on the upper hanging rod 20, the sieve plate 15 tilts to the lower right, and when the hook 19 is hung on the lower hanging rod 20, the sieve plate 15 tilts to the lower left;

[0022] The right end of the sieve plate is movably set on the right side wall of the processing box 2 through the rotating shaft 16 and is located at the bottom of the lower connecting port 11; the placing rack 21 is set on the left side of the processing box 2 and is located below the side discharge port 17, and the collecting frame 22 is placed on the placing rack 21. Two circulation boxes 10 are set on the right side of the processing box 2. A second driving member 13 is set in the circulation box 10. The second driving member 13 is a motor. The motor output shaft is connected to the spiral conveying rod 14. The upper connecting port is opened on the right side wall of the processing box 2 and is located at the upper part of the circulation box 10. The lower connecting port 11 is located at the bottom of the circulation box 10. The first driving member and the second driving member are both connected to the power supply.

[0023] Embodiment 2: The structure of the device of this embodiment is the same as that of Embodiment 1, except that it also includes a base and a guide plate. The processing box 2 is installed on the base 1, and the annular guide plate 23 is tilted and fixed above the crushing assembly. The guide plate 23 collects the soil sample between the two crushing rollers 8, and three sieve plates are provided.

[0024] When the above device is used, the hook 19 is hung on the upper hanging rod 20, and the soil sample is poured from the feed port 3. The soil sample is collected between the two crushing rollers 8 under the action of the guide plate 23, and the crushing rollers 8 are driven to rotate and operate through the first driving member and the transmission gear 9. The soil sample is crushed by the crushing roller 8 and falls onto the sieve plate 15. The soil sample with qualified size falls to the next crushing component for crushing. After crushing, it is screened by the next sieve plate until the size is qualified and discharged and collected through the discharge port 4. The soil sample with unqualified size is discharged and collected. The sample enters the circulation box 10 through the lower connecting port 11, and the second driving member 13 drives the spiral conveying rod 14 to rotate to transport the soil sample to the upper connecting port 12 and discharge it to the corresponding crushing component for re-crushing until the size is qualified. If soil samples of different sizes are required, the hook 19 is hung on the hanging rod below, and the soil samples of different sizes are screened out by the sieve plate 15. The samples slide out of the side discharge port 17 along the sieve plate 15, and the soil samples of different sizes are collected through the collection frame 22 below the side discharge port 17.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A laboratory soil sample crushing and grading screening device, characterized in that: It comprises a processing box (2), the top and bottom of the processing box are respectively provided with a feed inlet (3) and a discharge outlet (4), the inner cavity of the processing box is divided into more than three chambers by more than two sieve plates (15), the apertures of the sieve holes on the more than two sieve plates gradually decrease from the top to the bottom, the discharge outlet (4) is arranged at the bottom of the bottom chamber, and the remaining chambers are all provided with crushing components, a drive box is installed at a position corresponding to the crushing component on the outside of the processing box, a drive component is arranged in the drive box, and the drive component is connected to the crushing component; The processing box (2) has more than two side discharge ports (17) on the left side and more than two lower connection ports (11) on the right side. The two ends of the sieve plate (15) are respectively arranged in the side discharge port (17) and the lower connection port (11). An adjustment component is arranged on the left end of the sieve plate (15) for adjusting the inclination angle of the sieve plate in the processing box. A placement rack (21) is arranged on the left side of the processing box (2) and is located below the side discharge port (17). A collection frame (22) is placed on the placement rack (21). More than two circulation boxes (10) are arranged on the right side of the processing box (2). A second driving member (13) and a spiral conveying rod (14) connected thereto are arranged in the circulation box (10). The upper connection port is opened on the right side wall of the processing box (2) and is located on the upper part of the circulation box (10). The lower connection port (11) is located at the bottom of the circulation box (10).

2. The laboratory soil sample crushing and grading screening device according to claim 1 is characterized in that: The processing box (2) is installed on the base (1).

3. The laboratory soil sample crushing and grading screening device according to claim 1 is characterized in that: The crushing assembly comprises two crushing rollers (8) which cooperate with each other, and the roller shafts of the crushing rollers are connected to the driving assembly in the driving box.

4. The laboratory soil sample crushing and grading screening device according to claim 3 is characterized in that: The driving assembly comprises a first driving member (6) and two mutually meshing transmission gears (9), one transmission gear being fixedly connected to the first driving member (6), and the other transmission gear being fixedly connected to a crushing roller of the crushing assembly.

5. The laboratory soil sample crushing and grading screening device according to claim 1, characterized in that: The adjustment assembly comprises a connecting rope (18), a hook (19), and a hanging rod (20). One end of the connecting rope (18) is fixedly connected to the left end of the sieve plate (15), and the other end is fixedly connected to the hook (19). The two hanging rods (20) are fixed to the left side of the processing box (2) and are located above the side discharge port (17). The hook (19) and the hanging rod (20) cooperate with each other.

6. The laboratory soil sample crushing and grading screening device according to claim 1, characterized in that: The first driving element is a DC multi-V belt electric roller.

7. The laboratory soil sample crushing and grading screening device according to claim 1 is characterized in that: A guide plate (23) is obliquely arranged above the crushing assembly.

8. The laboratory soil sample crushing and grading screening device according to claim 1 is characterized in that: The right end of the sieve plate is movably arranged on the right side wall of the processing box (2) via a rotating shaft (16) and is located at the bottom of the lower connecting port.

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