Soil aggregate sample manual wet screening pretreatment device for laboratory

Abstract

The utility model discloses a laboratory soil aggregate sample manual wet screening pretreatment device, which is characterized in that a base is provided with a bottom fixing part, the bottom fixing part is provided with fixed mounting holes, the bottom of a fixing rod is fixedly mounted in one of the fixed mounting holes, and a soil screening group comprises a plurality of screening trays which are sequentially arranged from top to bottom; a rotary connecting piece is arranged on one side of each sieve tray, the rotary connecting pieces are rotatably mounted on the fixed rod, the apertures of sieve holes in the sieve trays are gradually reduced in the direction from the top to the bottom of the fixed rod, fixed sleeves are arranged on the sieve trays, and the movable rod can sequentially penetrate through the fixed sleeves and is fixed in the fixed mounting holes. According to the manual wet screening pretreatment device for the soil aggregate sample for the laboratory, the fixed rod, the movable rod and the base form a mounting frame for mounting the screening trays, so that the phenomenon that the screening trays are dispersed in the using process is effectively avoided, and the lifting and sinking amplitudes of the screening trays can be kept consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a manual wet screening pretreatment device for soil aggregate samples in a laboratory. Background Art

[0002] The types and qualities of heavy metals in soil aggregates are different because aggregates of different particle sizes may have different textures and porosities. Soil aggregates can be divided into macro-aggregates (>250 μm) and micro-aggregates (2000 μm), fine macro-aggregates (2000 - 250 μm) and micro-aggregates (250 - 53 μm), and silt-clay aggregates (<53 μm) according to their particle sizes; they can also be divided into stable aggregates and unstable aggregates according to their resistance to external forces. The separation of aggregate particles is the first step in exploring their character structures. The dry screening method and the wet screening method have been widely used in the separation of soil aggregates.

[0003] The wet screening method measures the content of soil water-stable aggregates and can reflect the potential soil anti-water erosion ability. The determination of the soil wet screening method can be achieved through two methods: manual screening and screening by a soil aggregate analyzer. The soil aggregate analyzer has a high price, is inconvenient for installation and cleaning, has low safety, makes great noise, and the sieve mesh needs to be specially made. Manual screening in the laboratory usually uses a set of sieves including five sieves, which are arranged in sequence from top to bottom. The wet screening step needs to be carried out manually in water, which is not easy to operate. At the same time, since the five sieves of the sieve set are not fixed together, during the operation process, when the sieve set is lifted and lowered, it is easy to disperse, and the lifting and sinking amplitudes of each sieve are also inconsistent, which will bring large errors to the subsequent detection. Content of the Utility Model

[0004] The purpose of the utility model is to provide a manual wet screening pretreatment device for soil aggregate samples in a laboratory to solve the above deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A manual wet screening pretreatment device for soil aggregate samples in a laboratory, comprising:

[0007] A base, at least two bottom fixing parts are arranged on the base, and fixing installation holes are arranged on the bottom fixing parts;

[0008] A fixing rod, the bottom of the fixing rod is fixedly installed in one of the fixing installation holes;

[0009] Soil sieve set, the soil sieve set includes a plurality of sieve trays arranged in sequence from top to bottom, and a rotary connector is provided on one side of each sieve tray. The rotary connector is rotatably installed on the fixed rod. In the direction from the top to the bottom of the fixed rod, the aperture of the sieve holes on the sieve tray gradually becomes smaller;

[0010] Movable rod, a fixed sleeve is provided on the sieve tray, and the movable rod can sequentially pass through each fixed sleeve and be fixed in the fixed mounting hole.

[0011] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, there are three bottom fixing parts, and the three bottom fixing parts are sequentially arranged at intervals on the base.

[0012] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, there are five sieve trays, and the five sieve trays are sequentially arranged at intervals along the axis direction of the fixed rod.

[0013] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, there are two fixed sleeves on each sieve tray, and the two fixed sleeves and the rotary connector are sequentially arranged at intervals along the circumferential direction of the sieve tray.

[0014] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, scale marks are provided on the fixed rod, and the scale marks are arranged along the axis direction of the fixed rod.

[0015] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, it further includes a fixing structure which is arranged on the bottom fixing part and is used for fixing the movable rod located in the fixed mounting hole.

[0016] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, the fixing structure includes a fixing bolt arranged on the bottom fixing part, and screw holes corresponding to the fixing bolts are provided at the bottom of the movable rod.

[0017] For the above-mentioned manual wet screening pretreatment device for soil aggregate samples in the laboratory, it further includes a locking assembly which is arranged on the fixed sleeve, and a locking part corresponding to the locking assembly is provided on the movable rod.

[0018] In the above technical solution, the manual wet screening pretreatment device for soil aggregate samples in the laboratory provided by the present utility model includes a base, a fixing rod, a soil sieve set and a movable rod. At least two bottom fixing parts are arranged on the base, the fixing rod is installed on one of the bottom fixing parts, the soil sieve set includes a plurality of sieve trays arranged in sequence from top to bottom, and the plurality of sieve trays are rotatably installed on the fixing rod. In the direction from the top to the bottom of the fixing rod, the aperture of the sieve holes on the sieve trays gradually becomes smaller. A fixing sleeve is arranged on the sieve tray, and the movable rod can sequentially pass through each fixing sleeve and be fixed on the bottom fixing part. In this way, during the use process, an installation frame for installing the sieve trays is formed by the fixing rod, the movable rod and the base, effectively avoiding the phenomenon of dispersion during the use of each sieve tray, enabling the lifting and sinking amplitudes of each sieve tray to be consistent, realizing rapid operation of sample wet screening, and the soil sieve set is easy to operate in water, greatly improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 FIG. 1 is one of the three-dimensional views of the manual wet screening pretreatment device for soil aggregate samples in the laboratory provided by the embodiment of the present utility model;

[0021] Figure 2 FIG. 2 is the front view of the manual wet screening pretreatment device for soil aggregate samples in the laboratory provided by the embodiment of the present utility model;

[0022] Figure 3 FIG. 3 is the second three-dimensional view of the manual wet screening pretreatment device for soil aggregate samples in the laboratory provided by the embodiment of the present utility model;

[0023] Figure 4 FIG. 4 is the structural schematic diagram of the movable rod provided by the embodiment of the present utility model;

[0024] Figure 5 FIG. 5 is the first structural schematic diagram of the locking assembly provided by the embodiment of the present utility model;

[0025] Figure 6 FIG. 6 is the second structural schematic diagram of the locking assembly provided by the embodiment of the present utility model;

[0026] Figure 7 FIG. 7 is the structural schematic diagram of the annular rotating body provided by the embodiment of the present utility model.

[0027] Description of the reference numerals:

[0028] 1. Base; 11. Bottom fixing member; 12. Fixing bolt; 2. Fixing rod; 3. Soil sieve set; 31. Sieve tray; 32. Rotary connecting member; 33. Fixing sleeve; 4. Movable rod; 41. Screw hole; 5. Locking assembly; 51. Ring-shaped rotating body; 52. Radial opening; 53. Radial locking block; 531. Arc-shaped groove; 54. Ring-shaped groove; 55. Ring-shaped spring; 56. Locking groove. Detailed implementation mode

[0029] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0030] As Figures 1-7 shown, the embodiment of the present utility model provides a manual wet sieving pretreatment device for soil aggregate samples in a laboratory, including a base 1, a fixing rod 2, a soil sieve set 3 and a movable rod 4. At least two bottom fixing members 11 are arranged on the base 1, and a fixing installation hole is arranged on the bottom fixing member 11. The bottom of the fixing rod 2 is fixedly installed in one of the fixing installation holes. The soil sieve set 3 includes a plurality of sieve trays 31 arranged in sequence from top to bottom. A rotary connecting member 32 is arranged on one side of each sieve tray 31. The rotary connecting member 32 is rotatably installed on the fixing rod 2. In the direction from the top to the bottom of the fixing rod 2, the aperture of the sieve holes on the sieve tray 31 gradually becomes smaller. A fixing sleeve 33 is arranged on the sieve tray 31. The movable rod 4 can sequentially pass through each fixing sleeve 33 and be fixed in the fixing installation hole.

[0031] Specifically, the base 1 is used for the installation of the fixing rod 2 and the movable rod 4. A bottom fixing member 11 is arranged on the base 1. The bottom fixing member 11 is a fixing block fixedly installed on the base 1. A fixing installation hole is arranged on the bottom fixing member 11. The size of the fixing installation hole is consistent with the sizes of the bottom of the fixing rod 2 and the movable rod 4, so that the bottoms of the fixing rod 2 and the movable rod 4 can be inserted into the fixing installation hole. There is one fixing rod 2, and the movable rod 4 can be set to one, two or more according to needs. Now, taking the movable rod 4 as two as an example for description: The fixing rod 2 and the movable rod 4 are arranged in parallel. Three bottom fixing members 11 are arranged on the base 1. The three bottom fixing members 11 are on the same circle with the center of the base 1 as the center, and the installation positions of the three bottom fixing members 11 correspond to the size of the sieve tray 31. The bottom of the fixing rod 2 is fixedly installed on the bottom fixing member 11. The bottom of the movable rod 4 is detachably connected to the fixing installation hole. The movable rod 4 can be both fixed and removed. In this way, the base 1, the fixing rod 2 and the movable rod 4 form a fixing bracket for fixing the soil sieve set 3.

[0032] In this embodiment, the soil sieve group 3 includes a plurality of sieve trays 31 arranged in sequence from top to bottom. The number of sieve trays 31 can be three, four, five or more. The sizes and quantities of the sieve holes on each sieve tray 31 are different. A rotary connector 32 is arranged on one side of the sieve tray 31. The rotary connector 32 is rotatably installed on the fixed rod 2. That is, after the sieve tray 31 is installed, it can rotate around the fixed rod 2 as the axis, but cannot move up and down along the axis direction of the fixed rod 2. A fixed sleeve 33 is arranged on the sieve tray 31. The number of fixed sleeves 33 is the same as the number of movable rods 4. For example, if there are two movable rods 4, there are also two fixed sleeves 33. And the two fixed sleeves 33 and the rotary connector 32 are sequentially arranged at intervals along the circumferential direction of the sieve tray 31. During the installation process, the sieve tray 31 with smaller sieve holes and more quantities is installed at the bottom, and the sieve tray 31 with larger sieve holes and fewer quantities is installed above. In this way, in the direction from the top to the bottom of the fixed rod 2, the aperture of the sieve holes on each sieve tray 31 gradually decreases, and the number of sieve holes gradually increases. And first, each sieve tray 31 is rotatably installed on the fixed rod 2. Subsequently, according to needs, the movable rod 4 passes through the fixed sleeve 33 on the corresponding sieve tray 31, and the lower end of the movable rod 4 is fixed in the fixed installation hole. For example, if there are 5 sieve trays 31, during use, all 5 sieve trays 31 can be used. At this time, all 5 sieve trays 31 are in the use position. The 5 sieve trays 31 are coaxially arranged in sequence from top to bottom. The movable rod 4 passes through the fixed sleeves 33 on the 5 sieve trays 31 in sequence and is fixed on the bottom fixing member 11.

[0033] The manual wet sieving pretreatment device for laboratory soil aggregate samples provided by the embodiment of the utility model includes a base 1, a fixed rod 2, a soil sieve group 3 and a movable rod 4. At least two bottom fixing members 11 are arranged on the base 1. The fixed rod 2 is installed on one of the bottom fixing members 11. The soil sieve group 3 includes a plurality of sieve trays 31 arranged in sequence from top to bottom. The plurality of sieve trays 31 are all rotatably installed on the fixed rod 2. In the direction from the top to the bottom of the fixed rod 2, the aperture of the sieve holes on the sieve tray 31 gradually becomes smaller. A fixed sleeve 33 is arranged on the sieve tray 31. The movable rod 4 can pass through each fixed sleeve 33 in sequence and is fixed on the bottom fixing member 11. In this way, during use, an installation frame for installing the sieve tray 31 is formed by the fixed rod 2, the movable rod 4 and the base 1, effectively avoiding the phenomenon of dispersion during the use of each sieve tray 31, and the lifting and sinking amplitudes of each sieve tray 31 can be kept consistent, realizing rapid operation of sample wet sieving. The soil sieve group 3 is easy to operate in water, greatly improving the sieving efficiency.

[0034] In this embodiment, preferably, there are three bottom fixing members 11. The three bottom fixing members 11 are arranged at intervals in sequence on the base 1. The three bottom fixing members 11 are located on the same virtual mounting circle, which takes the center of the base 1 as the center of the circle, and the size of this mounting circle is consistent with the size of the sieve plate 31. In this way, when installing the sieve plate 31, the fixing mounting holes on the bottom fixing members 11 and the fixing sleeves 33 can be coaxially aligned so that the movable rod 4 can be installed.

[0035] In this embodiment, preferably, there are five sieve plates 31. The five sieve plates 31 are rotatably installed on the fixing rod 2 in sequence along the axial direction of the fixing rod 2. Scale marks are provided on the fixing rod 2, and the scale marks are arranged along the axial direction of the fixing rod 2. Through the scale marks, the installation height of each sieve plate 31 and the spacing between each sieve plate 31 can be known, and the amplitude of the lifting and sinking of the sieve plate 31 during each operation can also be known. The spacing between each sieve plate 31 can be the same or designed to be different according to needs.

[0036] In this embodiment, preferably, there are two fixing sleeves 33 on the sieve plate 31. The two fixing sleeves 33 and the rotating connectors 32 are arranged at intervals in sequence along the circumferential direction of the sieve plate 31. The rotating connectors 32 can adopt relevant structures in the prior art, so that the sieve plate 31 is rotatably installed on the fixing rod 2. This is the prior art and will not be elaborated.

[0037] In this embodiment, preferably, a fixing structure is further included, which is arranged on the bottom fixing member 11 and is used to fix the movable rod 4 located in the fixing mounting hole. The fixing structure includes a fixing bolt 12 arranged on the bottom fixing member 11, and screw holes 41 corresponding to the fixing bolts 12 are arranged at the bottom of the movable rod 4; thus, during the installation process, when the bottom of the movable rod 4 is inserted into the fixing mounting hole, the fixing bolt 12 can be rotated, so that the end of the fixing bolt 12 rotates into the screw hole 41, and the lower end of the movable rod 4 is fixed in the fixing mounting hole. When it is necessary to disassemble the movable rod 4, the fixing bolt 12 can be rotated in the reverse direction to separate the fixing bolt 12 from the screw hole 41, so that the lower end of the movable rod 4 can be removed from the fixing mounting hole.

[0038] In this embodiment, preferably, a locking assembly 5 is further included. It is arranged on the fixed sleeve 33, and a locking portion corresponding to the locking assembly 5 is arranged on the movable rod 4. One locking assembly 5 is arranged on each fixed sleeve 33. The sieve tray 31 can be locked on the movable rod 4 through the locking of the locking assembly 5 and the locking portion. The locking assembly 5 includes an annular rotating body 51. The upper end of the annular rotating body 51 is rotatably installed at the bottom of the movable sleeve. There are two radial openings 52 arranged on the annular rotating body 51. A radial locking block 53 is arranged in the radial opening 52. The radial locking block 53 is slidably installed in the radial opening 52. At the same time, an annular groove 54 is arranged on the outer side wall of the annular rotating body 51. An annular spring 55 is arranged in the annular groove 54, that is, the annular spring 55 is arranged along the circumference of the annular groove 54. An arc-shaped groove 531 is arranged on one side of the radial locking block 53 close to the annular groove 54. The arc-shaped groove 531 can be connected to the annular groove 54. In this way, when the annular spring 55 is installed in the annular groove 54, the arc-shaped groove 531 on the radial locking block 53 just corresponds to the annular spring 55. There are multiple locking portions. The multiple locking portions are arranged at intervals in sequence along the axial direction of the movable rod 4. Each locking portion includes two locking grooves 56 located on the movable rod 4. The two locking grooves 56 are symmetrically arranged on the movable rod 4. The locking grooves 56 correspond to the radial locking blocks 53. And in the initial state of the annular spring 55, the locking end of the radial locking block 53 will be embedded into the locking groove 56. In this way, during the installation process, the movable rod 4 is first adjusted to the installation angle. At this time, the locking groove 56 and the radial locking block 53 are offset. That is, when the movable rod 4 passes through the inside of the annular rotating body 51, the radial locking block 53 will not meet the locking groove 56. The radial locking block 53 is in a pressing state against the side wall of the movable rod 4. At this time, the annular spring 55 has elasticity. When the movable rod 4 passes through each fixed sleeve 33 in sequence and is inserted into the fixed installation hole, the lower end of the movable rod 4 is fixed by the fixing bolt 12. Subsequently, the annular rotating body 51 on each fixed sleeve 33 is rotated. The rotation of the annular rotating body 51 can drive each radial locking block 53 to rotate, so that the locking end of the radial locking block 53 is embedded into the locking groove 56 for locking. When the movable rod 4 is disassembled, the annular rotating body 51 is continuously rotated, so that the locking end of the locking block slides out of the locking groove 56 to achieve unlocking.

[0039] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A laboratory soil aggregate sample manual wet screening pre-treatment device, characterized in that: include: A base, wherein at least two bottom fixing members are provided on the base, and fixing holes are provided on the bottom fixing members; A fixing rod, the bottom of which is fixedly mounted in one of the fixing holes; A soil sieve group, the soil sieve group comprises a plurality of sieve plates arranged in sequence from top to bottom, a rotating connector is arranged on one side of each sieve plate, the rotating connector is rotatably mounted on the fixed rod, and the aperture of the sieve holes on the sieve plates gradually decreases from the top to the bottom of the fixed rod; A movable rod is provided on the sieve plate with a fixed sleeve, and the movable rod can pass through each of the fixed sleeves in sequence and be fixed in the fixed installation hole.

2. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: There are three bottom fixing members, and the three bottom fixing members are sequentially arranged on the base at intervals.

3. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: There are five sieve plates, and the five sieve plates are arranged in sequence and at intervals along the axial direction of the fixing rod.

4. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: There are two fixed sleeves on each sieve plate, and the two fixed sleeves and the rotating connecting piece are arranged in sequence and spaced apart along the circumference of the sieve plate.

5. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: The fixing rod is provided with a scale mark, and the scale mark is arranged along the axis direction of the fixing rod.

6. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: It also includes a fixing structure, which is arranged on the bottom fixing member and is used to fix the movable rod located in the fixing installation hole.

7. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 6, characterized in that: The fixing structure comprises fixing bolts arranged on the bottom fixing member, and the bottom of each movable rod is provided with screw holes corresponding to the fixing bolts.

8. The manual wet screening pre-treatment device for soil aggregate samples for laboratory use according to claim 1, characterized in that: It also includes a locking assembly, which is arranged on the fixed sleeve, and the movable rod is provided with a locking part corresponding to the locking assembly.

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