Test soil sample grinding and sieving equipment

Abstract

The utility model discloses test soil sample grinding and sieving equipment, which relates to the technical field of soil pretreatment and comprises a shell, a stirring and shearing module and a sieving module, the stirring and shearing module and the sieving module are mounted in the shell, the stirring and shearing module is positioned above the sieving module, a feed port is arranged on the upper end face of the shell, and the stirring and shearing module is arranged opposite to the feed port. The stirring and shearing module is used for stirring and shearing soil particles falling from the feeding port when acting, the screening module is used for receiving and screening the soil particles falling from the stirring and shearing module, and when the stirring and shearing module acts, the lower end of the stirring and shearing module can act on the upper surface of the screening module and assist in screening of the soil particles. The soil pretreatment efficiency and the pretreatment effect can be improved, and meanwhile environmental pollution is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil pretreatment technical field, especially a kind of test soil sample grinding screening equipment. BACKGROUND

[0002] Soil environment is irreplaceable in agricultural production and people's daily production and life in our country, and is the basis for people to survive and develop. In scientific experimental research on soil pollution control and remediation, soil quality improvement and other aspects, a large number of treatment samples need to be collected and processed, and soil samples need to be pretreated to ensure the accuracy and requirements of the control test in soil-related soil potting test, or box test and field plot test.

[0003] At present, soil sample pretreatment mainly includes traditional crocodile type crusher crushing and manual screening. The crocodile type crusher has low efficiency, and the treatment of soil samples is relatively extensive, so that the particle size of treated soil is uneven, and stones and other impurities in the soil cannot be removed. Manual screening with a screen is labor-intensive, time-consuming and labor-intensive, and causes dust flying, noise and other problems, which will inevitably affect the physical and mental health of laboratory staff. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of test soil sample grinding screening equipment to solve the problems existing in the prior art, improve soil pretreatment efficiency and pretreatment effect, and reduce environmental pollution.

[0005] To achieve the above object, the utility model provides the following scheme:

[0006] The utility model provides a kind of test soil sample grinding screening equipment, including shell, stirring shear module and screening module installed in the shell, the stirring shear module is located above the screening module, the upper end surface of the shell is equipped with feed inlet, the stirring shear module is opposite the feed inlet and is arranged, and the stirring shear module can stir and shear soil particles falling through the feed inlet when the stirring shear module acts, the screening module is used to support and screen soil particles falling through the stirring shear module, and the lower end of the stirring shear module can act on the upper surface of the screening module and assist soil particles to screen down when the stirring shear module acts.

[0007] Preferably, the screening module is a multistage arc-shaped screen, and the multistage arc-shaped screens are arranged in sequence and have a decreasing aperture, and the stirring shear module can drive soil particles to move to the arc-shaped screen with the smallest aperture when the stirring shear module acts.

[0008] Preferably, the middle part of the arc-shaped screen is convex downward.

[0009] Preferably, the stirring and shearing module comprises multiple groups of stirring and shearing units with the same structure, and the number of the stirring and shearing units is the same as the number of the arc-shaped screens, and the multiple stirring and shearing units and the multiple arc-shaped screens are in one-to-one correspondence.

[0010] Preferably, the multiple-stage arc-shaped screens comprise a first arc-shaped screen and a second arc-shaped screen, the first arc-shaped screen is located below the feeding port, the first arc-shaped screen and the second arc-shaped screen are both arranged obliquely, the upper end of the first arc-shaped screen is detachably connected to the inner wall of the shell, the lower end of the first arc-shaped screen is connected to the lower end of the second arc-shaped screen, the upper end of the second arc-shaped screen is detachably connected to the inner wall of the shell, and the aperture of the first arc-shaped screen is larger than the aperture of the second arc-shaped screen.

[0011] Preferably, the upper end of the first arc-shaped screen is clamped to the inner wall of the shell, and the upper end of the second arc-shaped screen is clamped to the inner wall of the shell.

[0012] Preferably, the upper end of the first arc-shaped screen and the upper end of the second arc-shaped screen are both provided with clamping grooves, and the inner wall of the shell is provided with a clamping block at a position corresponding to each of the clamping grooves, and the clamping block is embedded in the corresponding clamping groove to realize the connection between the first arc-shaped screen and the inner wall of the shell and the connection between the second arc-shaped screen and the inner wall of the shell.

[0013] Preferably, the stirring and shearing units are two groups, one group of the stirring and shearing units is located above the first arc-shaped screen, and the other group of the stirring and shearing units is located above the second arc-shaped screen, the two groups of the stirring and shearing units can act on the soil particles passing between the two groups of the stirring and shearing units when rotating and stir and shear the soil particles, and the stirring and shearing units located above the first arc-shaped screen can drive the soil particles on the first arc-shaped screen to move towards the second arc-shaped screen when rotating.

[0014] Preferably, the stirring and shearing unit comprises a stirring and shearing motor, a gear set and a rotating shaft connected in sequence, a plurality of rotating blades are uniformly installed on the outer periphery of the rotating shaft, and the plurality of rotating blades, the plurality of stirring and shearing elements and the plurality of screening brushes correspond one-to-one, the stirring and shearing element is installed at one end of the rotating blade away from the rotating shaft, and the screening brush is installed at one end of the stirring and shearing element away from the rotating blade; two rotating shafts are arranged in a staggered manner in the horizontal direction and the vertical direction, and when the corresponding rotating blades are driven to rotate by the two rotating shafts, the two rotating blades located on different rotating shafts and approaching each other can drive the stirring and shearing element to stir and shear the soil, and when the rotating blade located above the first arc-shaped screen is rotated to make the corresponding screening brush contact the first arc-shaped screen, the screening brush can push the soil particles to move towards the second arc-shaped screen.

[0015] Preferably, the rotating blades on each rotating shaft are four.

[0016] The utility model discloses relative to prior art has obtained following technical effect:

[0017] The test soil sample grinding and screening equipment provided by the utility model, the stirring and shearing module is located above the screening module, the stirring and shearing module and the screening module are encapsulated through the shell, dust flying can be avoided, the health of the staff is protected, the upper end surface of the shell is equipped with a feeding port, the soil to be treated can be conveniently fed into the shell, the stirring and shearing module is arranged opposite the feeding port, and the soil particles falling through the feeding port can be stirred and sheared when the stirring and shearing module operates, so that the soil particles are further crushed and mixed, and qualified test soil can be conveniently obtained, the screening module is used for receiving and screening the soil particles falling through the stirring and shearing module, and the lower end of the stirring and shearing module can act on the upper surface of the screening module and assist the soil particles to be screened out when the stirring and shearing module operates, the screening efficiency and the screening effect are improved, and manual labor is saved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0019] Fig. 1 It is the front view of the test soil sample grinding and screening equipment in the utility model;

[0020] Fig. 2 It is the left view of the experimental soil sample grinding and screening equipment of the utility model;

[0021] Fig. 3 It is the top view of the experimental soil sample grinding and screening equipment of the utility model;

[0022] In the figure: 1 - shell; 2 - stirring and shearing module, 21 - fixed bolt, 22 - rotating shaft, 23 - rotating blade, 24 - stirring and shearing element, 25 - stirring and shearing motor, 26 - reduction gear, 27 - driving gear, 28 - screening brush; 3 - screening module, 31 - first arc-shaped screen, 32 - second arc-shaped screen, 33 - clamping groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The utility model aims at providing a kind of experimental soil sample grinding and screening equipment to solve the problems existing in prior art, improve soil pretreatment efficiency and pretreatment effect, while reducing environmental pollution.

[0025] To make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0026] As Figs. 1-3 As shown in the figure, the embodiment provides a kind of experimental soil sample grinding and screening equipment, including shell 1, stirring and shearing module 2 and screening module 3 installed in shell 1, stirring and shearing module 2 is located above screening module 3, stirring and shearing module 2 and screening module 3 are encapsulated by shell 1, dust flying can be avoided, the health of worker is protected, the upper end surface of shell 1 is equipped with feed inlet, it is convenient to pass into the soil to be treated into shell 1, stirring and shearing module 2 is set opposite feed inlet, and stirring and shearing module 2 can be stirred and sheared when acting to soil particles falling through feed inlet, so that soil particles are further crushed and mixed, and then qualified test soil is conveniently obtained, screening module 3 is used to support and screen soil particles falling through stirring and shearing module 2, and when stirring and shearing module 2 acts, the lower end of stirring and shearing module 2 can act on the upper surface of screening module 3, and assist soil particles to screen down, improve screening efficiency and screening effect, while, manual labor is saved.

[0027] Specifically, the screening module 3 is a multi-stage arc-shaped screen, which is arranged in sequence and has a decreasing aperture, and when the stirring and shearing module 2 is in operation, the soil particles can be moved to the arc-shaped screen with the smallest aperture, thereby improving the screening effect.

[0028] The middle part of the arc-shaped screen is downwardly protruded, so as to better receive the soil particles.

[0029] The stirring and shearing module 2 includes a plurality of stirring and shearing units with the same structure, and the number of the stirring and shearing units is the same as that of the arc-shaped screens. The plurality of stirring and shearing units and the plurality of arc-shaped screens are in one-to-one correspondence, and then, with the operation of the stirring and shearing units, the corresponding arc-shaped screens are acted on, thereby assisting the soil particles to fall through the screen holes of the arc-shaped screens and improving the screening efficiency.

[0030] The multi-stage arc-shaped screen includes a first arc-shaped screen 31 and a second arc-shaped screen 32. The skilled in the art can also select the specific number of arc-shaped screens according to actual needs. The first arc-shaped screen 31 is located below the feeding port. The first arc-shaped screen 31 and the second arc-shaped screen 32 are both arranged obliquely. The upper end of the first arc-shaped screen 31 is detachably connected to the inner wall of the shell 1. The lower end of the first arc-shaped screen 31 is connected to the lower end of the second arc-shaped screen 32. The upper end of the second arc-shaped screen 32 is detachably connected to the inner wall of the shell 1. The aperture of the first arc-shaped screen 31 is larger than that of the second arc-shaped screen 32, that is, the higher position is the large-aperture screen, and the lower position is the small-aperture screen. The purpose is to follow the particle motion law in the soil grinding process. When the soil moves and grinds in the shell 1, large particles will accumulate on the upper part of the soil sample, and fine particles will move to the lower part of the soil sample, thereby facilitating further grinding and improving the screening efficiency. In this process, the soil particles first enter the first arc-shaped screen 31 with a larger aperture and are screened by the first arc-shaped screen 31. With the operation of the stirring and shearing module 2, the soil particles further enter the second arc-shaped screen 32 with a smaller aperture and are further screened, so that the soil particles fall by gravity, thereby improving the screening effect and efficiency. Meanwhile, the skilled in the art can also replace the screen with the required mesh number according to the soil needs, so that it is suitable for the processing of various soil samples, and has stronger adaptability.

[0031] The upper end of the first arc-shaped screen 31 is clamped to the inner wall of the shell 1, and the upper end of the second arc-shaped screen 32 is clamped to the inner wall of the shell 1.

[0032] The upper end of the first arc-shaped screen 31 and the upper end of the second arc-shaped screen 32 are provided with clamping grooves 33, and the inner wall of the shell 1 is provided with a clamping block at the position corresponding to the two clamping grooves 33. The clamping block is embedded in the corresponding clamping groove 33 to realize the connection between the first arc-shaped screen 31 and the inner wall of the shell 1 and the connection between the second arc-shaped screen 32 and the inner wall of the shell 1. By replacing the arc-shaped screens with different hole diameters, soil particles with different particle sizes can be obtained. Other connection methods can also be selected by those skilled in the art according to actual needs.

[0033] The stirring and shearing units are two groups. One group of stirring and shearing units is located above the first arc-shaped screen 31, and the other group of stirring and shearing units is located above the second arc-shaped screen 32. The rotation of the two groups of stirring and shearing units can make the two groups of stirring and shearing units act on the soil particles passing between the two groups of stirring and shearing units and stir and shear the soil particles, thereby realizing further shearing and mixing of the broken soil particles and making the soil particle size more uniform. The stirring and shearing units located above the first arc-shaped screen 31 can drive the soil particles on the first arc-shaped screen 31 to move towards the second arc-shaped screen 32 when rotating, thereby realizing the screening of the soil particles through the first arc-shaped screen 31 with a large hole diameter first and then the further screening of the soil particles through the second arc-shaped screen 32. At the same time, the soil can also pass through each arc-shaped screen.

[0034] The stirring and shearing unit comprises a stirring and shearing motor 25, a gear set, a rotating shaft 22, a plurality of rotating blades 23, a plurality of stirring and shearing elements 24 and a plurality of screening brushes 28, the stirring and shearing motor 25, the gear set and the rotating shaft 22 are sequentially connected, then driving force is provided through the stirring and shearing motor 25, then the driving force is transmitted to the rotating shaft 22 after speed change through the gear set, the rotation of the rotating shaft 22 is realized, the plurality of rotating blades 23 are uniformly installed on the outer periphery of the rotating shaft 22 and can rotate along with the rotation of the rotating shaft 22, the plurality of rotating blades 23, the plurality of stirring and shearing elements 24 and the plurality of screening brushes 28 are one-to-one corresponding, the stirring and shearing element 24 is installed at one end of the rotating blade 23 away from the rotating shaft 22, then the rotation of the rotating blade 23 is driven by the rotating shaft 22, the soil particles are sheared through the stirring and shearing element 24, the screening brush 28 is installed at one end of the stirring and shearing element 24 away from the rotating blade 23, the soil particles can be pushed through the movement of the screening brush 28 on the first arc-shaped screen 31 or the second arc-shaped screen 32; the two rotating shafts 22 are arranged in a staggered manner in the horizontal direction and the vertical direction, the spacing of the two rotating shafts 22 in the horizontal direction is greater than the length of the rotating blade 23 and less than twice the length of the rotating blade 23, the spacing of the two rotating shafts 22 in the vertical direction is less than the length of the rotating blade 23, and when the two rotating shafts 22 rotate, each rotating blade 23 does not interfere with each other, when the two rotating shafts 22 drive the corresponding rotating blades 23 to rotate, the two rotating blades 23 located on different rotating shafts 22 and close to each other can drive the stirring and shearing element 24 to stir and shear the soil, when the rotating blade 23 above the first arc-shaped screen 31 rotates to make the corresponding screening brush 28 contact the first arc-shaped screen 31, the screening brush 28 can push the soil particles to move to the second arc-shaped screen 32. The rotating shaft 22 and the stirring and shearing element 24 are connected through the fixing bolt 21, the stirring and shearing motor 25 is connected with the reduction gear 26 in the gear set, the reduction gear 26 is connected with the driving gear 27 in the gear set, and finally the rotation of the two rotating shafts 22 is realized.

[0035] The rotating blades 23 on each rotating shaft 22 are four, and the number thereof can be adaptively changed according to actual needs by those skilled in the art.

[0036] The principle and implementation mode of the specific examples are described in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for those skilled in the art, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A device for grinding and sieving test soil samples, characterized in that: The device includes a housing, a mixing and shearing module and a screening module installed inside the housing. The mixing and shearing module is located above the screening module. The upper surface of the housing is provided with a feed inlet. The mixing and shearing module is positioned directly opposite the feed inlet. When the mixing and shearing module is activated, it can mix and shear the soil particles falling through the feed inlet. The screening module is used to receive and screen the soil particles falling through the mixing and shearing module. When the mixing and shearing module is activated, its lower end can act on the upper surface of the screening module to assist in screening the soil particles.

2. The soil sample grinding and sieving equipment according to claim 1, characterized in that: The screening module is a multi-stage arc-shaped screen, with the multiple stages of the arc-shaped screen arranged sequentially and the aperture decreasing in size. When the stirring and shearing module is activated, it can drive soil particles to move towards the arc-shaped screen with the smallest aperture.

3. The soil sample grinding and sieving equipment according to claim 2, characterized in that: The arc-shaped screen has a downward convex center.

4. The soil sample grinding and sieving equipment according to claim 2, characterized in that: The stirring and shearing module includes multiple sets of stirring and shearing units with identical structures, and the number of stirring and shearing units is the same as the number of arc-shaped screens, with each stirring and shearing unit and each arc-shaped screen corresponding to the other.

5. The test soil sample grinding and sieving equipment according to claim 4, characterized in that: The multi-stage arc screen includes a first arc screen and a second arc screen. The first arc screen is located below the feed inlet. Both the first and second arc screens are inclined. The upper end of the first arc screen is detachably connected to the inner wall of the outer shell, and the lower end of the first arc screen is connected to the lower end of the second arc screen. The upper end of the second arc screen is detachably connected to the inner wall of the outer shell. The aperture of the first arc screen is larger than that of the second arc screen.

6. The soil sample grinding and sieving equipment according to claim 5, characterized in that: The upper end of the first arc-shaped screen is engaged with the inner wall of the outer shell, and the upper end of the second arc-shaped screen is engaged with the inner wall of the outer shell.

7. The soil sample grinding and sieving equipment according to claim 6, characterized in that: Both the upper ends of the first arc-shaped screen and the upper ends of the second arc-shaped screen are provided with slots. A locking block is installed on the inner wall of the outer shell at the position corresponding to each of the two slots. By embedding the locking block into the corresponding slot, the connection between the first arc-shaped screen and the inner wall of the outer shell, as well as the connection between the second arc-shaped screen and the inner wall of the outer shell, are realized.

8. The test soil sample grinding and sieving equipment according to claim 5, characterized in that: The mixing and shearing unit consists of two sets. One set of mixing and shearing units is located above the first arc-shaped screen, and the other set is located above the second arc-shaped screen. When the two sets of mixing and shearing units rotate, they can act on the soil particles passing between the two sets of mixing and shearing units, and mix and shear the soil particles. When the mixing and shearing unit located above the first arc-shaped screen rotates, it can drive the soil particles on the first arc-shaped screen to move towards the second arc-shaped screen.

9. The test soil sample grinding and sieving equipment according to claim 8, characterized in that: The mixing and shearing unit includes a mixing and shearing motor, a gear set, a rotating shaft, multiple rotating blades, multiple mixing and shearing elements, and multiple screening brushes. The mixing and shearing motor, the gear set, and the rotating shaft are connected in sequence. The multiple rotating blades are evenly installed on the outer periphery of the rotating shaft, and the multiple rotating blades, multiple mixing and shearing elements, and multiple screening brushes correspond one-to-one. The mixing and shearing elements are installed at the ends of the rotating blades away from the rotating shaft, and the screening brushes are installed at the ends of the mixing and shearing elements away from the rotating blades. The two rotating shafts are staggered in both the horizontal and vertical directions. When the two rotating shafts drive the corresponding rotating blades to rotate, the two adjacent rotating blades on different rotating shafts can drive the mixing and shearing elements to mix and shear the soil. When the rotating blade above the first arc-shaped screen rotates until the corresponding screening brush contacts the first arc-shaped screen, the screening brush can push the soil particles towards the second arc-shaped screen.

10. The test soil sample grinding and sieving equipment according to claim 9, characterized in that: Each of the aforementioned rotating shafts has four rotating blades.

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