High-quality cement aggregate screening device

Abstract

The utility model belongs to the technical field of cement aggregate screening, and provides a high-quality cement aggregate screening device which comprises a cylindrical shell, a feeding assembly, a dust removal assembly, a cleaning assembly and a screening assembly. A feeding assembly is fixedly nested in the center position in the cylindrical shell, the feeding assembly comprises a material channel, and a dispersing mechanism is arranged in the material channel; a screening assembly is arranged below the barrel-shaped shell and comprises a barrel-shaped screening shell, and a first screen, a second screen, a third screen and a pulp discharging disc are sequentially arranged in the barrel-shaped screening shell from top to bottom; the dust removal assembly comprises an annular dust suction pipe and a cyclone dust collector, the annular dust suction pipe is arranged on the periphery of the material channel and in the cylindrical shell, and a cleaning assembly is arranged on the outer wall of the cylindrical shell; by arranging the dispersing mechanism, the dust removal assembly, the cleaning assembly and the like and reasonably arranging, multi-procedure and multi-azimuth impurity removal is conducted on cement aggregate, and the aggregate quality and efficient production are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cement aggregate screening technical field, concretely relates to a cement high-quality aggregate screening device. BACKGROUND

[0002] In the field of cement aggregate production, shaping treatment of aggregate by vertical shaft impact crusher, improved counterattack breaking and other equipment has become a key link to improve the performance of concrete. After shaping, the particle edges and corners of aggregate are reduced, and the circularity is significantly improved. Not only can the amount of sand filler in the concrete system be reduced, but also the cement content can be reduced under the premise of ensuring the workability of concrete, and the compressive strength of concrete can be improved by optimizing the packing density of aggregate, which significantly meets the high-quality demand of high-strength concrete production for aggregate particle shape and grading.

[0003] However, a large amount of sand and ash will inevitably be produced during the shaping process of aggregate, which affects the application efficiency of shaped aggregate: first, the excess sand disrupts the aggregate grading, reduces the packing density, increases the amount of cementitious material, and affects the performance of concrete; second, the ash on the surface of the aggregate weakens the bonding force with the cementitious material, and may also produce dust, increasing the cleaning and dust removal cost and prolonging the construction period.

[0004] The utility model discloses a kind of complex aggregate screening and washing sand integrated machine, the utility model can be selected to cement aggregate, but still there is deficiency: 1, flushing mode is single, it is difficult to adapt to the impurity removal demand of shaped aggregate, only rely on single position water spraying device to flush aggregate, cannot form effective peeling to the ash and sand that are closely adhered to the surface of high-quality cement aggregate after shaping, cannot cover aggregate surface comprehensively, impurity is not removed completely;2, material is easy to accumulate, there is risk of blockage and affects flushing effect.It is only delayed material residence time that the material baffle of its setting can, cannot avoid that aggregate gathers to form thick material pile in baffle area in the process of conveying, not only can cause feeding channel blockage, but also can cause that upper layer aggregate shields lower layer aggregate, so that lower layer aggregate cannot contact with flushing water, and flushing effect is greatly reduced.3, impurity removal procedure is single, cannot realize comprehensive impurity removal.Only by single water washing procedure to treat aggregate impurity, without designing special treatment step for exposed fine ash, part of ash is easy to remain or spread, difficult to meet the requirement of high-strength concrete to aggregate cleanliness. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of cement high-quality aggregate screening devices to solve the above technical problems.

[0006] The technical scheme adopted by the utility model is: a cement high-quality aggregate screening device, including cylindrical shell, feeding assembly, dust removal assembly, cleaning assembly, screening assembly;

[0007] The central position in the cylindrical shell is fixedly nested with a feeding assembly, and the feeding assembly comprises a material channel, and the material channel is provided with a dispersion mechanism;

[0008] The cylindrical shell is provided below with a screening assembly, and the screening assembly comprises a cylindrical screen shell, and the cylindrical screen shell is sequentially provided from top to bottom with a first screen, a second screen, a third screen and a pulp discharge disc; wherein the first screen is horizontally fixed to the inner wall of the cylindrical screen shell, the screen surface of the first screen is gradually inclined downward along the radial direction thereof from the circumferential outside to the center, the second screen, the third screen and the pulp discharge disc are all fixed to the inner wall of the cylindrical screen shell in an inclined manner; the upper end surface of the cylindrical screen shell is circular, and the vertical projection position of the center thereof corresponds to the center of the first screen and the geometric centers of the second screen, the third screen and the pulp discharge disc one by one; and the center of the first screen and the geometric centers of the second screen, the third screen and the pulp discharge disc are all provided with through holes, and the through holes are sleeved with a vibrating discharge mechanism;

[0009] The dust removal assembly comprises an annular dust suction pipe and a cyclone dust collector, the annular dust suction pipe is arranged in the periphery of the material channel and inside the cylindrical shell, four dust inlets are uniformly arranged on the inner periphery of the annular dust suction pipe, the dust inlets are all connected with the inside of the material channel through the through holes on the side wall of the material channel, and one dust outlet is arranged on the outer periphery of the annular dust suction pipe; the air inlet of the cyclone dust collector is connected with the dust outlet of the annular dust suction pipe through the through hole arranged on the side wall of the cylindrical shell;

[0010] The outer wall of the cylindrical shell is provided with a cleaning assembly, and the cleaning assembly comprises 4-12 pipes provided with nozzles, the pipes are uniformly arranged along the circumferential direction of the outer wall of the cylindrical shell, and the first nozzle on the upper portion of each pipe is directed to the lower portion of the dispersion mechanism through the through hole on the side wall of the cylindrical shell, and the second and third nozzles on the pipe from top to bottom are directed to the upper surface of the second screen and the upper surface of the third screen through the through holes on the side wall of the cylindrical screen shell.

[0011] The dispersion mechanism comprises a dispersion cone with a dome on the upper portion, support diversion rods arranged in an array along the circumferential direction of the dispersion cone, and a dispersion receiving platform formed by extending outward from the edge of the bottom of the dispersion cone, and the orthographic projection of the dispersion receiving platform is circular; one end of the support diversion rod is welded on the side wall of the dispersion cone, and the other end is welded on the inner side wall of the material channel, so as to realize the fixed connection of the dispersion mechanism and the material channel.

[0012] The support diversion rods are arranged in two layers on the side wall of the dispersion cone, and each layer is provided with 2-6 support diversion rods, and the included angle between adjacent support diversion rods is the same on the orthographic projection of the dispersion cone, and the whole is arranged in a diverging manner outward; the upper surface of the dispersion receiving platform is gradually lowered from the center to the circumferential direction, forming a slope surface inclined outward along the radial direction, which can guide the material to slide on the dispersion receiving platform to the circumferential direction thereof.

[0013] The vibrating discharge mechanism comprises a vibrating discharge cylinder, a mounting base below the vibrating discharge cylinder, and an isolation guide slope inside the vibrating discharge cylinder; wherein two slope surfaces in opposite directions are included above the isolation guide slope, a notch is formed in the middle of the vibrating discharge cylinder and extends through the radial direction of the vibrating discharge cylinder, the notch is located between the second screen and the third screen, and the notch corresponds to the isolation guide slope; the mounting base comprises two slope surfaces that are symmetrically arranged and have an inclination angle of 30-45 degrees; and the same size vibrating motors are fixedly installed on the two slope surfaces.

[0014] A through hole is formed in the upper surface of the mounting base and extends through the mounting base, the through hole is adapted to the outer side wall of the vibrating discharge cylinder, the lower part of the vibrating discharge cylinder is vertically arranged through the through hole and forms a positioning fit with the mounting base.

[0015] The inner side edges of the central through holes of the first screen, the second screen, and the third screen are extended downward to form a cylindrical first connecting part; the inner side edges of the central through hole of the discharge disc are extended upward to form a cylindrical second connecting part; and the vibrating discharge cylinder is fixedly sleeved in the first connecting part of the first screen, the second screen, and the third screen and the second connecting part of the discharge disc from top to bottom.

[0016] The upper end surface edges of the first screen, the second screen, the third screen, and the discharge disc are extended upward to form extension parts in sequence, and each extension part is fixedly connected with the inner wall of the cylindrical screen shell through bolts; and each extension part is a segmented structure distributed along the circumferential direction of the outer side edge of the upper end surface of the corresponding part.

[0017] The inclination directions and angles of the second screen, the third screen, and the discharge disc inside the cylindrical screen shell are consistent, and the bottom positions corresponding to the inclinations of the second screen, the third screen, and the discharge disc are provided with corresponding discharge ports on the outer side wall of the cylindrical screen shell.

[0018] A dust hopper is arranged below the cyclone dust collector, and a centrifugal fan is connected to the exhaust port of the cyclone dust collector.

[0019] The inner wall of the cylindrical shell and the outer wall of the material channel are connected through a supporting column, and the top end of the supporting column is tangent to the lower outer wall of the annular dust suction pipe.

[0020] Beneficial effects: 1. Solve the problem of material accumulation, eliminate the risk of blockage and improve the flushing effect. The aggregate is dispersed when entering through the dispersion mechanism, and then guided by the slope surface of the dispersion receiving table to form a thin layer of material, without the upper layer blocking the lower layer flushing, which not only avoids channel blockage, but also ensures that all aggregates can fully contact with the flushing water, improving the flushing effect. 2. Optimize the flushing structure and accurately adapt to the impurity removal demand of the shaped aggregate. The multi-directional flushing formed by the nozzles around the dispersion receiving table can fully cover the surface of the aggregate, and can completely separate the closely adhered ash and sand, solving the problem of incomplete flushing of the single water spraying device. 3. Multi-process impurity removal to ensure screening effect. First, expose the surface impurities of the aggregate through the dispersion mechanism, then capture the fine ash by the dust removal assembly, and finally separate the residual sand and ash by multi-directional flushing. The multi-process connection is close, which completely removes impurities and meets the cleanliness requirements of high-strength concrete aggregate. 4. Compact structure design to adapt to modern high-efficiency screening requirements. The material falling potential energy and various components work together without redundancy, the overall layout is compact, which meets the requirements of modern production line for equipment space utilization, and avoids the process interruption problem caused by isolated components, improving the screening efficiency. 5. The dispersion mechanism can disperse the material without additional power device through its special structure, such as dispersion cone with dome, layered support shunt rod and dispersion receiving table, which combines the potential energy of the aggregate falling process, reduces additional energy consumption, reduces energy waste in the production process, and meets the environmental protection requirements of modern production. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the utility model;

[0022] Figure 2 It is a top view of the utility model;

[0023] Figure 3 It is a partial structure sectional view of the utility model;

[0024] Figure 4 It is a dispersion mechanism three-dimensional structure schematic view of the utility model;

[0025] Figure 5 It is a dust removal assembly three-dimensional structure schematic view of the utility model;

[0026] Figure 6 It is a screening assembly three-dimensional structure schematic view of the utility model;

[0027] Figure 7 It is a front view of the internal structure of the screening assembly of the utility model;

[0028] Figure 8 It is a three-dimensional schematic view of the internal structure of the screening assembly of the utility model;

[0029] Figure 9 It is the sectional structure schematic view of the vibration discharging mechanism of the utility model;

[0030] Figure 10 It is the structure schematic view of the cooperation connection of the feeding assembly and the annular dust suction pipe of the utility model;

[0031] Mark: 1, cylindrical shell; 2, feeding assembly; 21, material passage; 22, dispersion mechanism; 221, dispersion cone; 222, support shunt rod; 223, dispersion receiving platform; 3, dust removal assembly; 31, annular dust suction pipe; 311, ash inlet; 312, ash outlet; 32, cyclone dust collector; 33, ash bucket; 34, centrifugal fan; 4, cleaning assembly; 41, pipeline; 42, spray head; 5, screening assembly; 51, cylindrical sieve shell; 511, discharge port; 52, first sieve; 53, second sieve; 54, third sieve; 55, slurry discharge disc; 56, vibration discharging mechanism; 561, vibration discharging cylinder; 562, mounting seat; 563, isolation guide slope; 564, notch; 565, vibration motor; 57, extension; 58, first connecting part; 59, second connecting part; 6, supporting column. DETAILED DESCRIPTION

[0032] The specific implementation of the utility model is further explained in detail in combination with the drawings. Figures 1-9The utility model discloses a technical scheme is shown: a cement high -quality aggregate screening device, including the cylindrical shell 1, feeding assembly 2, dust removal subassembly 3, cleaning subassembly 4, screening subassembly 5, wherein the central position fixed nesting of cylindrical shell 1 in feeding assembly 2, feeding assembly 2 includes material channel 21, is equipped with dispersion mechanism 22 in material channel 21, the lower part of dispersion mechanism 22 is towards the first screen cloth 52 of the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22, the upper surface of the second screen cloth 53 and the upper surface of the third screen cloth 54 in the cylindrical screen shell 51 side wall through the hole of the cylindrical screen shell 51 side wall gradually from top to bottom second and third spray head 42, the lower part of the first spray head 42 is towards dispersion mechanism 22,The dispersed aggregate falls from the edge of the dispersion receiving platform 223 of the dispersion mechanism 22 to the outer edge of the first screen 52 of the screening assembly 5, the first screen 52 is inclined downward along the radial direction from the circumferential outside to the center, cooperating with the vibration of the vibrating discharge mechanism 56, the aggregate converges from the outer edge to the center of the first screen 52 during the screening process, and the aggregate smaller than the aperture of the first screen 52 falls into the second screen 53 through the screen hole of the first screen 52, the aggregate larger than the aperture of the first screen 52 falls into the vibrating discharge cylinder 561 of the vibrating discharge mechanism 56 through the central through hole, and then falls from the vibrating discharge cylinder 561 to the isolation guide slope 563 and is discharged to the third screen 54 through the gap 564. In the above process of the embodiment, the apertures of the second screen 53 and the third screen 54 are smaller than that of the first screen 52, the 4-12 strip nozzles 42 of the cleaning assembly 4 are circumferentially laid along the cylindrical shell 1, the upper first nozzle 42 is directed to the dispersed aggregate below the dispersion mechanism 22 for preliminary washing, and the second and third nozzles 42 are directed to the upper surfaces of the second screen 53 and the third screen 54 respectively for further washing of the aggregate during the screening process. The slurry generated by the washing falls to the slurry discharge disc 55, and the screened and washed material is discharged along the inclined direction of the second screen 53 and the third screen 54 under the action of the vibrating force of the vibrating discharge mechanism 56, and the slurry generated by the washing is discharged along the inclined direction of the slurry discharge disc 55, so as to finally realize multi-stage screening and cleaning of the dispersed aggregate, and obtain high-quality aggregate. In the above process, the first screen 52 is horizontally fixed to the inner wall of the cylindrical screen shell 51, and the screen surface of the first screen 52 is gradually inclined downward along the radial direction from the circumferential outside to the center, instead of being inclined as the second screen 53 and the third screen 54, because the first screen 52 is used for grading the aggregate, if it is inclined, the material falling from the edge of the dispersion receiving platform 223 may be directly discharged from the inclined bottom without screening, and the design that the screen surface of the first screen 52 is gradually inclined downward along the radial direction from the circumferential outside to the center can maximize the completion of the grading of the cement aggregate when it converges from the outer edge to the center of the first screen 52, which reflects the scientific rationality and practicality of the utility model, and the second screen 53 and the third screen 54 are mainly used for further washing the impurities possibly existing on the graded cement aggregate and facilitating the discharge of the screened cement aggregate, so they are inclined. In the embodiment, the flange formed by the outward extension of the lower end edge of the cylindrical shell 1 is connected with the flange formed by the outward extension of the upper end edge of the cylindrical screen shell 51 through bolt cooperation.

[0033] The ash inlet 311 closest to the ash outlet 312 has a smaller diameter than the other ash inlets 311 of the annular ash suction pipe 31. This arrangement prevents excessive dust suction at the location close to the ash outlet 312 due to the stronger negative pressure, thereby preventing local over-suction of dust and airflow turbulence or suction of useful materials in the material channel 21. At the same time, it ensures sufficient negative pressure at the other ash inlets 311 of the annular ash suction pipe 31 for uniform and efficient dust adsorption, achieving overall dust suction balance and stability.

[0034] The dispersion mechanism 22 includes a top dispersion cone 221 with a dome, support shunt rods 222 arranged in an array around the dispersion cone 221, and a dispersion receiving platform 223 extending outward from the bottom edge of the dispersion cone 221, the orthographic projection of the dispersion receiving platform 223 being circular. One end of the support shunt rod 222 is welded to the side wall of the dispersion cone 221, and the other end is welded to the inner side wall of the material channel 21, thereby achieving fixed connection of the dispersion mechanism 22 and the material channel 21. In this arrangement, after the aggregate enters the material channel 21, it first contacts the top dispersion cone 221 with a dome. The dome prevents the aggregate from accumulating and guides it to slide down the cone wall. The support shunt rods 222 arranged in an array around the dispersion cone 221 break the aggregate into a dispersed state, exposing internal impurities and facilitating dust removal by the dust removal assembly 3. The finally dispersed aggregate falls onto the circular dispersion receiving platform 223 extending from the bottom of the dispersion cone 221, facilitating washing of the cement aggregate by the cleaning assembly 4.

[0035] The support shunt rods 222 are arranged in two layers on the side wall of the dispersion cone 221, with 2-6 support shunt rods 222 in each layer. In the orthographic projection of the dispersion cone 221, the adjacent support shunt rods 222 have the same included angle and are arranged in a diverging manner. The upper surface of the dispersion receiving platform 223 gradually decreases from the center to the circumferential direction, forming a radially outward inclined slope that guides the material to slide on the dispersion receiving platform 223 towards its circumferential direction. In this arrangement, the sliding aggregate can be layered and multi-angle shunted, and the uniform dispersion structure balances the stress on the aggregate and prevents local accumulation. The radially outward inclined slope formed by the gradual decrease of the upper surface of the dispersion receiving platform 223 from the center to the circumference guides the dispersed aggregate to smoothly slide along the slope to the circumferential edge, ensuring uniform falling of the aggregate into the outer edge of the first screen 52 and preventing accumulation at the center of the receiving platform, thereby improving the uniformity of subsequent screening, ensuring the dispersion effect and smoothness of material flow.

[0036] The vibration discharging mechanism 56 comprises a vibration discharging cylinder 561, a mounting base 562 below the vibration discharging cylinder 561, and an isolation guide slope 563 inside the vibration discharging cylinder 561; wherein the isolation guide slope 563 comprises two slope surfaces in opposite directions above the isolation guide slope 563, a notch 564 is formed in the middle of the vibration discharging cylinder 561 and penetrates the radial direction of the vibration discharging cylinder 561, the notch 564 is located between the second screen 53 and the third screen 54, and the notch 564 corresponds to the isolation guide slope 563, the mounting base 562 comprises two symmetrical slope surfaces with an inclination angle of 30°-45°, and the same type of vibration motors 565 are fixedly installed on the two slope surfaces; in this arrangement, the specific structure of the mounting base 562 and the vibration motors 565 can effectively drive the vibration discharging mechanism 56 to vibrate vertically; when the vibration motors 565 are working, the vibration force output by the vibration motors 565 will be decomposed into horizontal and vertical components along the slope direction; because the left and right slope surfaces are completely symmetrical, the horizontal components generated by the two vibration motors 565 are equal in size and opposite in direction, and they will cancel each other out to avoid horizontal deviation or shaking of the vibration discharging mechanism 56; while the vertical components generated by the two vibration motors 565 are the same in direction and superimposed in size, forming a vertical resultant force, which is transmitted to the vibration discharging cylinder 561 through the mounting base 562, and ultimately drives the entire vibration discharging mechanism 56 to vibrate vertically and stably, and then synchronously transmits the vertical vibration to each screen and the slurry discharge disc 55, assisting in the screening of aggregates and the discharge of slurry; in addition, the isolation guide slope 563 also serves to isolate the vibration discharging cylinder 561, which aims to prevent materials or slurry from being discharged from below the vibration discharging cylinder 561.

[0037] A through hole is formed in the upper surface of the mounting base 562 and penetrates the mounting base 562, which is matched with the outer wall of the vibration discharging cylinder 561, and the lower part of the vibration discharging cylinder 561 is vertically arranged through the through hole and forms a positioning fit with the mounting base 562; in this arrangement, the lower part of the vibration discharging cylinder 561 is vertically arranged through the through hole formed in the upper surface of the mounting base 562 and forms a positioning fit with the mounting base 562, rather than directly mounting the mounting base 562 below the vibration discharging cylinder 561, because this design can more evenly and efficiently transmit the vertical vibration force generated by the vibration motors 565 on the mounting base 562 to the vibration discharging cylinder 561, ensuring that the vibration discharging cylinder 561 vibrates vertically and synchronously as a whole.

[0038] The inner side edges of the central through holes of the first screen 52, the second screen 53 and the third screen 54 extend downward to form a cylindrical first connecting part 58; the inner side edges of the central through hole of the slurry discharge disc 55 extend upward to form a cylindrical second connecting part 59; the vibrating discharge cylinder 561 is fixedly sleeved in the first connecting part 58 of the first screen 52, the second screen 53 and the third screen 54 and the second connecting part 59 of the slurry discharge disc 55 from top to bottom; in this arrangement, the inner side edges of the central through hole of the third screen 54 extend downward to form a cylindrical first connecting part 58, not upward; if extending upward, the extending part will interfere with the notch 564 in the middle of the vibrating discharge cylinder 561, hindering the material not meeting the aperture of the first screen 52 to be smoothly discharged from the notch 564 to the third screen 54; the inner side edges of the central through hole of the slurry discharge disc 55 extend upward to form a cylindrical second connecting part 59, not downward; if extending downward, the slurry above the slurry discharge disc 55 may seep along the gap between the second connecting part 59 and the vibrating discharge cylinder 561, causing the problem of liquid leakage; this design guarantees the stability of the equipment operation and the smoothness of the material flow, embodies the scientific rationality and practicality of the utility model; the vibrating discharge cylinder 561 is fixedly sleeved in the first connecting part 58 of the first screen 52, the second screen 53 and the third screen 54 and the second connecting part 59 of the slurry discharge disc 55 from top to bottom, which, on the one hand, forms a rigid connection of the screens, the slurry discharge disc 55 and the vibrating discharge cylinder 561 through sleeving cooperation, makes the vertical vibration generated by the vibrating discharge mechanism 56 be efficiently and synchronously transmitted to each component, ensures the smooth screening of the aggregate on the screen and the rapid discharge of the slurry on the slurry discharge disc 55; on the other hand, in the screening process of the aggregate, the aggregate is gathered from the outer edge of the first screen 52 to the center, in this process, the aggregate smaller than the aperture of the first screen 52 falls into the second screen 53 through the screen hole of the first screen 52, the aggregate larger than the aperture of the first screen 52 falls into the vibrating discharge cylinder 561 from the upper port of the vibrating discharge cylinder 561 through the central through hole, and then the aggregate falls on the isolation material guiding slope 563 and is discharged to the third screen 54 through the notch 564.

[0039] The upper end face edges of the first screen 52, the second screen 53, the third screen 54 and the slurry discharge disc 55 are sequentially formed with extension parts 57, each of which is fixedly connected with the inner wall of the cylindrical screen shell 51 through bolts; and each extension part 57 is a segmented structure distributed along the outer edge of the upper end face of the corresponding component; in this arrangement, the extension part 57 is a segmented structure rather than a monolithic structure, which serves two purposes: first, to avoid excessive force being transmitted to the cylindrical screen shell 51 when the vibrating discharge cylinder 561 drives the screens and the slurry discharge disc 55 to vibrate, which is conducive to stable operation of the equipment; second, to reduce the contact area between the extension part 57 and the inner wall of the cylindrical screen shell 51, which not only avoids energy waste caused by transmission of vibration force to the cylindrical screen shell 51, but also reduces stress concentration caused by equipment vibration, while avoiding the impact of thermal expansion and contraction or vibration deformation of the monolithic extension part 57 on the fixing effect, further ensuring long-term stable operation of the components.

[0040] The inclination direction and angle of the second screen 53, the third screen 54 and the slurry discharge disc 55 inside the cylindrical screen shell 51 are consistent, and the outer wall of the cylindrical screen shell 51 has discharge ports 511 corresponding to the inclined bottom positions of the second screen 53, the third screen 54 and the slurry discharge disc 55; in this arrangement, the consistent inclination direction and angle allow the screened and washed aggregates and slurry to move stably along the same trajectory, avoiding material retention or flow disorder caused by differences in inclination parameters; the discharge ports 511 at the corresponding positions of the outer wall of the cylindrical screen shell 51 can be connected with the inclined ends of the components, ensuring that the aggregates meeting the specifications are smoothly discharged from the discharge ports 511 of the second screen 53 and the third screen 54, and the slurry generated by washing is concentrated and discharged from the discharge ports 511 of the slurry discharge disc 55, achieving orderly separation and collection of materials and slurry; the slurry discharged from the discharge ports 511 can be collected and purified according to actual conditions, and then recycled.

[0041] A dust hopper 33 is arranged below the cyclone dust collector 32, and a centrifugal fan 34 is connected to the exhaust port of the cyclone dust collector 32; in this arrangement, the dust hopper 33 is arranged below the cyclone dust collector 32 to collect and separate the dust, and the centrifugal fan 34 is connected to the exhaust port of the cyclone dust collector 32 to provide negative pressure power to suck in dust-containing air and provide power for the dust removal assembly 3, which is a prior art and will not be described in detail.

[0042] The inner wall of the cylindrical shell 1 and the outer wall of the material passage 21 are connected through the supporting column 6, the top end of the supporting column 6 is tangent to the lower outer wall of the annular dust suction pipe 31; in this setting, the supporting column 6 has two functions, one is to connect the inner wall of the cylindrical shell 1 and the outer wall of the material passage 21, to provide stable support for the material passage 21, to ensure its position stable during equipment operation; on the other hand, its top end is tangent to the lower outer wall of the annular dust suction pipe 31, which can lift the annular dust suction pipe 31, avoid the displacement of the dust suction pipe due to vibration or its own weight, ensure the communication state of the dust inlet 311 of the annular dust suction pipe 31 and the material passage 21, and ensure the stable operation of the dust removal work.

[0043] Specific working principle: aggregate first through the material passage 21 of the feeding assembly 2 into the upper port, the material first contact the dispersion cone 221 of the upper part with dome of the dispersion mechanism 22, the dome avoids the aggregate accumulation and guides it to slide along the cone wall, in the sliding process, the support and shunt rod 222 arranged on the side wall of the dispersion cone 221 outward divergent, the aggregate is layered and multi-angle split into discrete state, so that the internal impurities of the aggregate are fully exposed, then the dispersed aggregate falls on the dispersion receiving platform 223 at the bottom of the dispersion cone 221, slides along the slope of the dispersion receiving platform 223 to the circumferential edge, and falls into the outer edge of the first screen 52 of the screening assembly 5 uniformly; At this time, the centrifugal fan 34 provides negative pressure power for the annular dust suction pipe 31 through the cyclone dust collector 32, the four inlet ports 311 of the annular dust suction pipe 31 inhale the dust generated in the dispersion process through the side wall hole of the material passage 21, the dust enters the cyclone dust collector 32 through the dust outlet 312 and the air inlet of the cyclone dust collector 32, and the separated dust is collected by the dust hopper 33 below the cyclone dust collector 32. Clean gas is discharged from the exhaust port; The 4-12 strip nozzle 42 pipes 41 of the cleaning assembly 4 are circumferentially laid along the cylindrical shell 1, the first nozzle 42 at the upper part faces the dispersed aggregate below the dispersion mechanism 22, and the second and third nozzles 42 from top to bottom face the upper surfaces of the second screen 53 and the third screen 54 respectively, and further wash the screened aggregate; In the screening assembly 5, the first screen 52 is horizontally fixed and the screen surface is inclined downward from the circumference outside to the center, and the aggregate converges from the outer edge of the first screen 52 to the center, and the aggregate smaller than the aperture of the first screen 52 falls into the second screen 53 through the screen hole, and the aggregate larger than the aperture of the first screen 52 falls into the vibration discharge cylinder 561 through the central hole, and then falls on the isolation guide slope 563 with two opposite slopes in the cylinder, and then is discharged to the third screen 54 through the gap 564 between the second screen 53 and the third screen 54; The vibration discharge mechanism 56 works through the vibration motors 565 of the same specification fixed on the left and right symmetrical slopes of the mounting seat 562, drives the vertical vibration of the vibration discharge cylinder 561, and the vibration discharge cylinder 561 drives the vertical synchronous vibration of the first screen 52, the second screen 53, the third screen 54 and the discharge plate 55, the second screen 53, the third screen 54 and the discharge plate 55 have consistent inclination direction and inclination angle, the discharge port 511 is arranged at the corresponding position of the outer wall of the cylindrical screen shell 51, the screened and washed aggregate is discharged from the corresponding discharge port 511 along the inclination direction of the second screen 53 and the third screen 54, the slurry produced by washing is discharged from the discharge port 511 of the discharge plate 55 along the inclination direction of the discharge plate 55, and the screening of the cement aggregate is completed.

Claims

1. A high-quality cement aggregate screening device, characterized by: It includes a cylindrical shell, a feeding assembly, a dust removal assembly, a cleaning assembly, and a screening assembly; The feeding assembly is fixedly nested in the central position of the cylindrical shell, and the feeding assembly includes a material channel, and a dispersion mechanism is provided in the material channel; A screening assembly is provided below the cylindrical outer shell, and the screening assembly includes a cylindrical screen shell, in which a first screen, a second screen, a third screen, and a pulp discharge disk are sequentially provided from top to bottom; wherein the first screen is horizontally fixed to the inner wall of the cylindrical screen shell, and the screen surface of the first screen gradually tilts downward from the outer side of the circumference to the center of the circle along its radial direction, and the second screen, the third screen, and the pulp discharge disk are all fixed to the inner wall of the cylindrical screen shell in an inclined shape; the upper end face of the cylindrical screen shell is circular, and the vertical projection position of its center of the circle corresponds one-to-one to the center of the circle of the first screen, and the geometric centers of the second screen, the third screen, and the pulp discharge disk; and a through hole is opened at the center of the circle of the first screen, and at the geometric centers of the second screen, the third screen, and the pulp discharge disk, and a vibrating discharge mechanism is sleeved in the through hole; The dust removal assembly includes an annular dust suction pipe and a cyclone dust collector. The annular dust suction pipe is arranged on the outer periphery of the material channel and inside the cylindrical shell. Four dust inlets are evenly opened on the inner periphery of the annular dust suction pipe. The ash inlets are connected to the interior of the material channel through through holes on the side wall of the material channel. An ash outlet is opened on the outer periphery of the annular dust suction pipe. The air inlet of the cyclone dust collector is connected to the ash outlet of the annular dust suction pipe through a through hole opened on the side wall of the cylindrical shell. A cleaning assembly is provided on the outer wall of the cylindrical shell, which includes 4-12 pipes with nozzles. The pipes are evenly laid along the circumference of the outer wall of the cylindrical shell, and the first nozzle on the upper part of each pipe is directed toward the lower part of the dispersion mechanism through the through hole on the side wall of the cylindrical shell. The second and third nozzles on the pipe from top to bottom are directed toward the upper surface of the second screen and the upper surface of the third screen in turn through the through holes on the side wall of the cylindrical sieve shell.

2. The high-quality cement aggregate screening device according to claim 1, characterized in that: The dispersion mechanism includes a dispersion cone with a dome on the top, supporting diverter rods distributed in an array along the circumference of the dispersion cone, and a dispersion receiving platform formed by extending outward from the bottom edge of the dispersion cone, and the positive projection of the dispersion receiving platform is a circle; one end of the supporting diverter rod is welded to the side wall of the dispersion cone, and the other end is welded to the inner wall of the material channel, thereby realizing a fixed connection between the dispersion mechanism and the material channel.

3. The high-quality cement aggregate screening device according to claim 2, characterized in that: The supporting diverter rods are arranged in two layers on the side wall of the dispersion cone, and each layer is provided with 2-6 supporting diverter rods. In the front projection of the dispersion cone, the angles between adjacent supporting diverter rods are the same, and the overall arrangement is outward divergent; the upper surface of the dispersion receiving platform gradually decreases from the center to the circumference, forming a slope inclined radially outward, which can guide the material to slide in the circumference direction on the dispersion receiving platform.

4. The high-quality cement aggregate screening device according to claim 1, characterized in that: The vibrating discharge mechanism includes a vibrating discharge barrel, a mounting base below the vibrating discharge barrel, and an isolation guide slope inside the vibrating discharge barrel; the isolation guide slope includes two slopes in opposite directions above the isolation guide slope, and a gap is opened in the middle of the vibrating discharge barrel in the radial direction of the vibrating discharge barrel. The gap is located between the second screen and the third screen, and the gap corresponds to the isolation guide slope. The mounting base includes two left and right slopes, which are symmetrically arranged and have an inclination angle of 30°-45°. Vibration motors of the same specifications are fixedly installed on the two slopes.

5. The high-quality cement aggregate screening device according to claim 4, characterized in that: A through hole is provided on the upper surface of the mounting seat, which passes through the upper and lower parts of the mounting seat. The through hole is adapted to the outer wall of the vibrating discharge barrel. The lower part of the vibrating discharge barrel is vertically penetrated through the through hole and forms a positioning match with the mounting seat.

6. The high-quality cement aggregate screening device according to claim 5, characterized in that: The inner edges of the central through holes of the first screen, the second screen and the third screen extend downward to form a cylindrical first connecting portion; the inner edge of the central through hole of the pulp discharge disk extends upward to form a cylindrical second connecting portion; the vibrating discharge barrel is fixedly sleeved on the first connecting portions of the first screen, the second screen, the third screen and the second connecting portion of the pulp discharge disk from top to bottom.

7. The high-quality cement aggregate screening device according to claim 6, characterized in that: The edges of the upper end surfaces of the first screen, the second screen, the third screen and the pulp discharge plate all extend upward to form extension parts in sequence, and each extension part is fixedly connected to the inner wall of the cylindrical screen shell by bolts; and each extension part is a segmented structure that is circumferentially spaced along the outer edge of the upper end surface of its corresponding component.

8. The high-quality cement aggregate screening device according to claim 7, characterized in that: The inclination direction and inclination angle of the second screen, the third screen and the pulp discharge plate inside the cylindrical screen shell are consistent, and corresponding discharge ports are opened on the outer wall of the cylindrical screen shell corresponding to the inclined bottom positions of the second screen, the third screen and the pulp discharge plate.

9. The high-quality cement aggregate screening device according to claim 1, characterized in that: An ash hopper is provided below the cyclone dust collector, and a centrifugal fan is connected to the end of the cyclone dust collector exhaust port.

10. The high-quality cement aggregate screening device according to claim 1, characterized in that: The inner wall of the cylindrical shell is connected to the outer wall of the material channel through a supporting column, and the top of the supporting column is tangent to the lower outer wall of the annular dust suction pipe.

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