CN107115925A - A kind of device for integrating sample broke and screening - Google Patents

Abstract

The invention provides a device that integrates sample crushing and screening, including a sample crushing structure and a screening structure. The sample crushing structure includes a moving millstone and a static millstone. The moving millstone has a convex arc crushing part protruding downward. , the static grinding disc has a concave arc crushing part that is recessed downwards to cooperate with the convex arc crushing part, and the gap between the convex arc crushing part and the concave arc crushing part constitutes a crushing zone, and the crushing zone The upper end of the upper end is the feed inlet, and a conduit runs through the concave arc crushing part to communicate with the crushing zone and the screening structure, and the radius of curvature of the arc profile of the longitudinal section of the convex arc crushing part is slightly smaller than the corresponding The radius of curvature of the arc profile of the longitudinal section of the concave arc broken part. The beneficial effects of the invention are: liberating labor force, improving production efficiency and reducing production cost.

Description

A device integrating 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 dry-wet cycles, it is inevitable 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 completed by artificial hammering soil, manual sieving or artificial hammering soil and mechanical sieving, which greatly increases the The cost of time and manpower and material resources of the experiment.

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

Contents of the invention

In view of this, the embodiment of the present invention provides a device integrating sample crushing and screening, so as to liberate labor force, improve production efficiency and reduce production cost.

An embodiment of the present invention provides a device that integrates sample crushing and screening, including a sample crushing structure and a screening structure. The sample crushing structure includes a moving grinding disc and a static grinding disc. The convex arc crushing part, the static grinding disc has a concave arc crushing part recessed downward to cooperate with the convex arc crushing part, the gap between the convex arc crushing part and the concave arc crushing part constitutes a crushing section, The upper end of the crushing section is a feed inlet, a conduit runs through the concave arc crushing part to connect the crushing section and the screening structure, and the radius of curvature of the arc profile of the longitudinal section of the convex arc crushing part is smaller than the corresponding The radius of curvature of the arc profile of the longitudinal section of the concave arc breaking 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 movable grinding table through a connecting piece, and the moving grinding table rotates through the connection The parts drive the screening structure to rotate and vibrate.

Further, the conduit runs through the arc-shaped bottom of the concave arc breaking portion.

Further, the conduit runs through the lowest point in the middle of the concave arc breaking portion.

Further, a dustproof 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 located at the upper end of the bracket and supported by the bracket.

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

Further, the screening structure includes a screening main body and several screening boxes detachably arranged on the screening main body, and two adjacent screening boxes are arranged one above the other.

Further, a sieve is provided in each sieving box, and the sieving apertures of several sieves decrease step by step from top to bottom.

Further, the screening box is provided with an engaging structure, and the screening main body is provided with an engaging structure corresponding to the engaging structure, and the screening box is connected between the engaging structure and the The snap fit structure is fixed on the screening main body.

Further, the snap-fitting structure is a clasp, and the snap-fitting structure is a buckle.

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

The beneficial effects brought by the technical solution provided by the embodiments of the present invention are: the device integrating sample crushing and screening of the present invention drives the movable grinding disc through the rotating disc and the transmission device to make the movable grinding disc relative to the The silent disk rotates to grind the rock and soil, and the convex arc crushing part with a smaller curvature radius cooperates with the concave arc crushing part with a larger curvature radius to grind the rock and soil gradually and fully, which not only has a simple structure , 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 schematic structural view of a device integrating sample crushing and screening in the present invention;

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

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of device that integrates sample crushing and screening, can be used in the dry-wet cycle test of soft rock and soil, mainly includes: sample crushing structure 10, screening structure 20 and a connection piece 50 connecting the sample crushing structure 10 and the screening structure 20 .

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

The lower surface of the static grinding table 12 is mounted on a support 30 and is supported by the support 30. The static grinding table 12 is provided with a concave arc breaking portion 121 downwardly toward the direction where the moving grinding table 11 is located. The convex arc breaking part 111 corresponds to the concave arc breaking part 121, and as shown in FIG. The radius of curvature of the arc profile of the cut surface, so there is a gap between the convex arc breaking part 111 and the concave arc breaking part 121, and the gap gradually decreases from top to bottom. The gap between the grinding discs 12 constitutes a crushing zone 13 . The bottom of the concave arc crushing part 121 of the static grinding disc 12 is penetrated by a conduit 18, and the conduit 18 extends downwards into the screening structure 20, so as to communicate with the crushing section 13 and the screening structure 20 inside, and the conduit 18 runs through the lowest point in the middle of the concave arc breaking portion 121 .

The height of the bracket 30 is adjustable. Specifically, the bracket 30 includes a fixed frame 31 at the lower end, a movable frame 32 at the upper end, and fastening bolts 33 for fixing the movable frame 32 to the fixed 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 confining bolt 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 then Realize adjusting the size of the gap between the static grinding table 12 and the moving grinding table 11, that is, adjusting the size of the crushing section 13, so that the grinding degree of rock and soil can be adjusted. The upper end of the crushing section 13 is a feed port 131 , and rock and earth enter the crushing section 13 from the feed port 131 .

In order to prevent the phenomenon of dust flying 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 to control pollution and improve environmental comfort.

The screening structure 20 mainly includes a screening main body 21 and several screening boxes 22 detachably arranged on the screening main body 21, and two adjacent screening boxes 22 are set up and down each other, thereby forming a multi-layer , Multi-stage screening structure for multi-stage screening of rock and soil. The device integrating sample crushing and screening of the present invention also includes a support 40, the sieving main body 21 is connected to the movable grinding plate 11 through the connecting piece 50, and the lower end of the sieving main body 21 is connected through a hinge 41 It is movable and hinged to the support 40 , so that the screening structure 20 can rotate and vibrate as the movable grinding table 11 rotates.

A sieve (not shown) is arranged in each of the sieve boxes 22, and the sieve apertures of several sieves decrease step by step 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 screens from top to bottom, so that rock and soil with different particle sizes can be selected from different screens. .

The screening box 22 is provided with an engaging structure 23, such as a clasp, and the screening body 21 is provided with an engaging structure 24 corresponding to the engaging structure 23, such as a buckle. The box 22 is fixed on the screening main body 21 under the cooperation of the engaging structure 23 and the engaging structure 24 . In this way, when the screening structure 20 needs to be discharged after working for a period of time, the engaging structure 23 and the engaging 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 are cleaned out to complete a screening.

During work, start described motor 17, make described movable millstone 11 rotate relative to described static millstone 12 by described rotating shaft 171, described rotating disk 16 and described conveyer belt 15, simultaneously described screening structure 20 is on the described movable millstone. 11 rotates and vibrates under rotation. Pour the rock and soil to be crushed from the feed port 131. After the rock and soil enter the crushing section 13, they are ground and crushed by the movable millstone 11 and the static millstone 12, and as the movable millstone 11 rotates, the The upper end of the crushing section 13 enters the bottom end of the crushing section 13, since the radius of curvature of the arc profile of the longitudinal section of the convex arc crushing part 111 is slightly smaller than the arc shape of the longitudinal section of the concave arc crushing part 121 The radius of curvature of the profile, so the closer to the bottom of the crushing zone 13, the narrower the crushing zone 13 is, the greater the grinding force between the movable grinding disc 11 and the static grinding disc 12 is, and the grinding is more sufficient. The finally fully ground rock 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 along with the rotation of the movable grinding disc 11, thereby screening the rock and soil that enters the screening structure 20 after grinding. Each of the screening boxes 22 is multi-layered and multi-stage sieved, rock and soil of different particle sizes are left on the screens in the different screening boxes 22, and the engaging structure 23 and the engaging structure are opened. structure 24, and then extract the corresponding screening box 22 from the screening main body 21, and then clean out the rock and soil on the screen in the screening box 22 to complete a screening.

Compared with the prior art, the device integrating sample crushing and screening in the present invention drives the moving grinding disc 11 through the rotating disc 16 and the transmission device 15 to make the moving grinding disc 11 rotate relative to the silent disc 12 To grind the 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 are gradually ground and fully ground, which is not only simple in structure, but also convenient Control and operation, and can 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 article, the orientation words such as front, rear, upper, and lower involved are defined by the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

The above descriptions 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 range.

Claims (10)

1. A device integrating sample crushing and screening, including a sample crushing structure and a screening structure, characterized in that: the sample crushing structure includes a moving grinding disc and a static grinding disc, and the moving grinding disc has a downward convex The arc crushing part, the static grinding disc has a concave arc crushing part recessed downwards to cooperate with the convex arc crushing part, and the gap between the convex arc crushing part and the concave arc crushing part constitutes a crushing section, so The upper end of the crushing section is a feed inlet, a conduit runs through the concave arc crushing part to connect the crushing section and the screening structure, and the radius of curvature of the arc profile of the longitudinal section of the convex arc crushing part is smaller than the corresponding The radius of curvature of the arc profile of the longitudinal section of the concave arc breaking part. 2. The device integrating sample crushing and screening as claimed in claim 1, further comprising a support, the lower end of the screening structure is movably hinged to the support, and the screening structure passes through A connecting piece is connected with the movable millstone, and the movable millstone rotates to drive the screening structure to rotate and vibrate through the connecting piece. 3 . The device integrating sample crushing and screening according to claim 1 , wherein the conduit runs through the arc-shaped bottom of the concave arc crushing part. 4 . 4. The device integrating sample crushing and screening according to claim 3, characterized in that: the conduit runs through the lowest point in the middle of the concave arc crushing part. 5. The device integrating sample crushing and screening as claimed in claim 1, wherein a dust cover is provided on the periphery of the static grinding disc, and the moving grinding disc is connected with a turntable through a conveyor belt, and the turntable The center of the motor is connected with the rotating shaft of a motor. 6. The device integrating sample crushing and screening as claimed in claim 1, further comprising a bracket whose height is adjustable, and the static grinding disc is located at the upper end of the bracket and supported by the bracket. 7. The device integrating sample crushing and screening as claimed in claim 6, wherein the support includes a fixed frame at the lower end, a movable frame at the upper end, and fixing the movable frame to the fixed frame fastening bolts, the upper end area of the fixed frame is sleeved on the periphery of the lower end area of the movable frame. 8. The device integrating sample crushing and screening as claimed in claim 1, characterized in that: the screening structure comprises a screening main body and detachable screening boxes arranged on the screening main body, And two adjacent screening boxes are arranged one above the other. 9. The device integrating sample crushing and screening as claimed in claim 8, characterized in that: a sieve is provided in each sieving box, and several sieves have a sieving aperture from top to bottom. Decrease step by step. 10. The device integrating sample crushing and screening as claimed in claim 8, characterized in that: the screening box is provided with an engaging structure, and the screening main body is provided with a device corresponding to the engaging structure. A snap-fit structure, the screening box is fixed to the screening main body under the cooperation of the snap-fit structure and the snap-fit structure.