CN107115925B - A device that integrates sample crushing and screening - Google Patents

Abstract

The invention provides a device integrating sample crushing and screening, which comprises a sample crushing structure and a screening structure, wherein the sample crushing structure comprises a movable grinding disc and a static grinding disc, the movable grinding disc is provided with a convex arc crushing part protruding downwards, the static grinding disc is provided with a concave arc crushing part recessed downwards and matched with the convex arc crushing part, a gap between the convex arc crushing part and the concave arc crushing part forms a crushing section, the upper end of the crushing section is provided with a feeding hole, a guide pipe penetrates through the concave arc crushing part to communicate the crushing section with the screening structure, and the curvature radius of the arc-shaped profile of the longitudinal section of the convex arc crushing part is slightly smaller than that of the arc-shaped profile of the longitudinal section of the concave arc crushing part corresponding to the convex arc crushing part. The invention has the beneficial effects that: the labor force is liberated, the production efficiency is improved, and the production cost is reduced.

Description

A device that integrates sample crushing and screening

technical field

The invention relates to the technical field of grinding and screening, in particular to a device integrating sample crushing and screening.

Background technique

When studying the mechanical properties of soil under the action of drying and wetting cycles, it is unavoidable to repeat the preparation of samples many times. The first thing to do to prepare the sample is to grind and sieve the formed sample. Under the existing conditions, this process is all done by manual hammering, manual screening or manual hammering and mechanical screening, which greatly increases the number of samples. The time and cost of human and material resources of the experiment.

Therefore, how to liberate productivity, break the limitation of artificial hammering, and prepare target samples efficiently and quickly has become an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention provide a device that integrates sample crushing and screening, so as to liberate labor, improve production efficiency and reduce production costs.

An embodiment of the present invention provides a device integrating sample crushing and screening, including a sample crushing structure and a screening structure, wherein the sample crushing structure includes a moving grinding disc and a static grinding disc, and the moving grinding disc has a downwardly protruding grinding disc. a convex arc crushing part, the static grinding disc has a concave arc crushing part which is arranged concavely downward and cooperates with the convex arc crushing part, and the gap between the convex arc crushing part and the concave arc crushing part constitutes a crushing interval, The upper end of the crushing section is a feeding port, a conduit runs through the concave arc crushing part to connect the crushing section and the screening structure, and the curvature radius of the arc profile of the longitudinal section of the convex arc crushing part is smaller than the corresponding The curvature radius of the arc profile of the longitudinal section of the concave arc crushing part.

Further, it also includes a support, the lower end of the screening structure is movably hinged to the support, the screening structure is connected with the moving grinding disc through a connecting piece, and the moving grinding disc rotates through the connection The element drives the screening structure to rotate and vibrate.

Further, the conduit penetrates the arc-shaped bottom of the concave arc crushing part.

Further, the conduit penetrates the lowest part of the middle position of the concave arc crushing part.

Further, a dust cover is provided on the periphery of the static grinding disc.

Further, it also includes a bracket whose height is adjustable, and the static grinding disc is supported by the bracket at the upper end of the bracket.

Further, the bracket includes a fixed frame at the lower end, a movable frame at the upper end, and a fastening bolt for fixing the movable frame to the fixed frame, and the upper end area of the fixed frame is sleeved on the movable frame. The periphery of the lower end region.

Further, the screening structure includes a screening main body and a plurality of screening boxes detachably provided on the screening main body, and two adjacent screening boxes are arranged on top of each other.

Further, each of the sieving boxes is provided with a screen, and the screen apertures of several of the screens are gradually reduced from top to bottom.

Further, the sieving box is provided with an engaging structure, and the sieving main body is provided with a snap-fit structure corresponding to the engaging structure, and the sieving box is provided with the engaging structure and the The sieving main body is fixed under the cooperation of the snap-fit structure.

Further, the engaging structure is a snap ring, and the engaging and matching structure is a snap.

Further, the movable grinding disc is connected with a turntable through a conveyor belt, and the center of the turntable is connected with a rotating shaft of a motor.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are: the device integrating sample crushing and screening of the present invention drives the moving grinding disc by linking the rotating disc with the transmission device, so that the moving grinding disc is relatively opposite to the rest. The silent disc rotates and grinds the rock and soil, and the convex arc crushing part with a smaller curvature radius and the concave arc crushing part with a larger curvature radius cooperate to grind the rock and soil, so that the rock and soil is gradually ground and fully ground, not only the structure is simple , Low cost, easy to control and operate, and can effectively liberate labor, improve production efficiency and save production costs.

Description of drawings

Fig. 1 is a structural representation of the device of the present invention that integrates sample crushing and screening;

FIG. 2 is a top view of the device of FIG. 1 .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2, an embodiment of the present invention provides a device that integrates sample crushing and screening, which can be used in dry-wet cycle tests of soft rock and soil, mainly including: sample crushing structure 10, screening The structure 20 and the connecting piece 50 connecting the sample breaking structure 10 and the screening structure 20 .

The sample crushing structure 10 includes a moving grinding disc 11 and a static grinding disc 12. The upper surface of the moving grinding disc 11 is a plane parallel to the horizontal plane, and the lower surface is a downwardly convex curved surface, that is, the moving grinding disc 11 faces the static grinding disc 11. The lower end region in the direction where the grinding disc 12 is located has a convex arc crushing portion 111 protruding downward. The movable grinding disc 11 is connected with a turntable 16 through a transmission device 15, and the central gear of the turntable 16 is connected with the rotating shaft 171 of a motor 17. Specifically, the transmission device 15 is a conveyor belt, and the motor 17 passes through the The rotating shaft 171 drives the rotating plate 16 to rotate in the horizontal direction, and the rotating plate 16 drives the movable grinding plate 11 to rotate in the horizontal direction through the conveyor belt 15 .

The lower surface of the static grinding disc 12 is mounted on a bracket 30 and supported by the bracket 30 . The convex arc crushing part 111 corresponds to the concave arc crushing part 121 , and as shown in FIG. 1 , the curvature radius of the arc profile of the longitudinal section of the convex arc crushing part 111 is slightly smaller than the longitudinal Because of the curvature radius of the arc profile of the tangent surface, there is a gap between the convex arc crushing part 111 and the concave arc crushing part 121, and the gap gradually decreases from top to bottom. The gaps between the grinding discs 12 constitute the crushing section 13 . The bottom of the concave arc crushing portion 121 of the static grinding disc 12 is penetrated by a conduit 18 , and the conduit 18 extends downward into the interior of the screening structure 20 , thereby connecting the crushing section 13 and the screening structure 20 . inside, and the conduit 18 penetrates the lowest part of the middle position of the concave arc crushing part 121 .

The height of the bracket 30 is adjustable. Specifically, the bracket 30 includes a fixing frame 31 at the lower end, a movable frame 32 at the upper end, and a fastening bolt 33 for fixing the movable frame 32 to the fixing frame 31 , The upper end area of the fixed frame 31 is sleeved on the periphery of the lower end area of the movable frame 32. By adjusting the locking bolts 33, the height of the movable frame 32 can be adjusted so as to realize the adjustment of the height of the bracket 30, and further The size of the gap between the static grinding disc 12 and the dynamic grinding disc 11 can be adjusted, that is, the size of the crushing section 13 can be adjusted, so that the grinding degree of rock and soil can be adjusted. The upper end of the crushing section 13 is a feeding port 131 , and the rock and soil enter the crushing section 13 from the feeding port 131 .

In order to prevent the phenomenon of flying dust and polluting the environment during the grinding process, a dust cover 14 is also arranged around the periphery of the static grinding disc 12. The opening direction of the dust cover 14 is upward, which can effectively block the grinding process. The rock and soil splash or spread around, control pollution and improve environmental comfort.

The screening structure 20 mainly includes a screening main body 21 and a plurality of screening boxes 22 detachably arranged on the screening main body 21, and two adjacent screening boxes 22 are arranged on top of each other, thereby forming a multi-layer structure. , Multi-stage screening structure for multi-stage screening of rock and soil. The device integrating sample crushing and screening of the present invention further includes a support 40 , the screening main body 21 is connected to the moving grinding disc 11 through the connecting piece 50 , and the lower end of the screening main body 21 is connected by a hinge 41 It is movably hinged to the support 40 , so that the screening structure 20 can rotate and vibrate with the rotation of the movable grinding disc 11 .

Each of the sieving boxes 22 is provided with a screen (not shown), and the screening apertures of a plurality of the screens are gradually reduced from top to bottom. After the ground rock and soil enters the screening structure 20 through the conduit 18, it is screened in multiple stages by several of the screens from top to bottom, so that the rock and soil with different particle sizes can be easily selected from different screens. .

The screening box 22 is provided with a snap-fit structure 23, such as a snap ring, and the screening body 21 is provided with a snap-fit structure 24 corresponding to the snap-fit structure 23, such as a snap, the screening The box 22 is fixed to the screening main body 21 under the cooperation of the snap-fit structure 23 and the snap-fit structure 24 . In this way, when the screening structure 20 needs to be discharged after working for a period of time, the snap-fit structure 23 and the snap-fit structure 24 can be opened, and then the corresponding screening box 22 can be removed from the screening main body. 20, and then the rock and soil on the screen in the screening box 22 is cleaned out to complete one screening.

During operation, the motor 17 is started, and the movable grinding disc 11 is rotated relative to the static grinding disc 12 through the rotating shaft 171, the turntable 16 and the conveying belt 15, and the screening structure 20 is in the moving grinding disc at the same time. Rotational vibration under the rotation of 11. The rock and soil to be crushed is poured into the feeding port 131 , and the rock and soil enters the crushing section 13 and is ground and crushed by the moving grinding disc 11 and the static grinding disc 12 , and gradually changes from The upper end of the crushing section 13 enters the bottom end of the crushing section 13, because the curvature radius of the arc profile of the longitudinal section of the convex arc crushing section 111 is slightly smaller than the arc of the longitudinal section of the concave arc crushing section 121. The radius of curvature of the contour, so the closer to the bottom end of the crushing section 13, the narrower the crushing section 13, the greater the grinding force between the movable grinding disc 11 and the static grinding disc 12, the more sufficient the grinding. Finally, the fully ground rock and soil enters the screening structure 20 through the conduit 18 located at the bottom end of the concave arc crushing part 121 . Driven by the connecting piece 50, the screening structure 20 rotates and vibrates with the rotation of the moving grinding disc 11, so as to screen the rock and soil entering the screening structure 20 after grinding. Each of the sieving boxes 22 is multi-layered and multi-stage sieved, and the rock and soil of different particle sizes are left on the sieves in the different sieving boxes 22, and the engaging structure 23 is opened and the snap fit structure 24, and then the corresponding screening box 22 is extracted from the screening main body 21, and then the rock and soil on the screen in the screening box 22 is cleaned out to complete a screening.

Compared with the prior art, the device integrating sample crushing and screening of the present invention drives the moving grinding disc 11 through the rotating disc 16 in conjunction with the transmission device 15 to make the moving grinding disc 11 rotate relative to the silent disc 12 . Grinding rock and soil, the convex arc crushing part 111 with a smaller curvature radius and the concave arc crushing part 121 with a larger curvature radius cooperate to grind the rock and soil, so that the rock and soil is gradually ground and fully ground, which not only has a simple structure, but also facilitates Control and operation, but also effectively liberate labor, improve production efficiency, and save production costs. Moreover, the moving grinding disc 11 and the static grinding disc 12 are driven by the same motor 17, which also simplifies the structure and reduces the manufacturing cost.

In this document, the related terms such as front, rear, upper and lower are defined by the positions of the components in the drawings and the positions between the components, which are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of the locative words should not limit the scope of protection claimed in this application.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (7)

1. The utility model provides a collect broken and screening of sample in device of an organic whole, includes broken structure of sample and screening structure, its characterized in that: the sample crushing structure comprises a movable grinding disc, a support and a static grinding disc, wherein the movable grinding disc is provided with a convex arc crushing part which is arranged in a downward protruding mode, the static grinding disc is provided with a concave arc crushing part which is arranged in a downward recessed mode and matched with the convex arc crushing part, a gap between the convex arc crushing part and the concave arc crushing part forms a crushing section, the upper end of the crushing section is provided with a feeding hole, a guide pipe penetrates through the concave arc crushing part to communicate the crushing section with the screening structure, and the curvature radius of an arc-shaped outline of a longitudinal section of the convex arc crushing part is smaller than that of a longitudinal section of the concave arc crushing part corresponding to the arc-shaped outline;

the lower end of the screening structure is movably hinged to the support, the screening structure is connected with the movable grinding disc through a connecting piece, and the movable grinding disc rotates to drive the screening structure to rotate and vibrate through the connecting piece;

the screening structure comprises a screening main body and a plurality of screening boxes which are detachably arranged on the screening main body, and two adjacent screening boxes are arranged up and down;

the screening box is provided with a clamping structure, the screening main body is provided with a clamping matching structure corresponding to the clamping structure, and the screening box is fixed to the screening main body under the matching of the clamping structure and the clamping matching structure.

2. The device integrating sample crushing and screening as claimed in claim 1, wherein: the guide pipe penetrates through the arc-shaped bottom of the concave arc crushing part.

3. The device integrating sample disruption and screening of claim 2, wherein: the guide pipe penetrates through the lowest position of the middle position of the concave arc crushing part.

4. The device integrating sample crushing and screening as claimed in claim 1, wherein: the periphery of quiet mill is equipped with the dust cover, it is connected with a carousel to move the mill through a conveyer belt, the center of carousel is connected with the pivot of a motor.

5. The device integrating sample crushing and screening as claimed in claim 1, wherein: the height of the bracket is adjustable, and the static grinding disc is positioned at the upper end of the bracket and supported by the bracket.

6. The device integrating sample crushing and screening as claimed in claim 5, wherein: the support comprises a fixed frame positioned at the lower end, a movable frame positioned at the upper end and a fastening bolt for fixing the movable frame on the fixed frame, wherein the upper end area of the fixed frame is sleeved on the periphery of the lower end area of the movable frame.

7. The device integrating sample crushing and screening as claimed in claim 1, wherein: each screening box all is equipped with a screen cloth in, a plurality of the screen cloth reduces from last to its screening aperture step by step down.

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