Superfine aggregate cleaning device

Abstract

The utility model relates to the technical field of sandstone cleaning equipment, in particular to a superfine aggregate cleaning device, which comprises a vibrating frame, a vibrating screen, a cleaning device and a cleaning device, the vibrating frame comprises a shell and a screen I fixed in the shell, and the screen I is 80-100 meshes; the conveying mechanism is arranged below the vibration frame; the cleaning and separating mechanism is arranged at the output end of the conveying mechanism; the sedimentation tank is arranged at the output end of the cleaning and separating mechanism; the feeding end of the spiral conveyor is located at the bottom of the sedimentation tank, and the discharging end extends out of the sedimentation tank; by means of the first 80-100-mesh screen, superfine sand meeting the particle size requirement is effectively screened out, the product purity is greatly improved, meanwhile, the conveying mechanism, the cleaning and separating mechanism, the settling pond and the spiral conveyor work cooperatively, the production period is greatly shortened, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sand and gravel washing equipment, and in particular to an ultrafine aggregate washing device. Background Technology

[0002] Ultrafine sand is an aggregate with extremely fine particle size, characterized by fine particles and large specific surface area. In the construction field, it is often used to prepare high-performance concrete, which can effectively improve the workability, fluidity and durability of concrete, and enhance the overall performance of concrete.

[0003] In the traditional field of ultrafine aggregate cleaning, there are many problems. Previous cleaning devices have insufficient screening accuracy, making it difficult to accurately separate ultrafine aggregates that meet specific particle size requirements, resulting in low product purity and affecting their application in industries with stringent aggregate quality requirements, such as construction and high-end manufacturing. Moreover, the lack of effective connection between various cleaning stages leads to extended production cycles and increased costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an ultrafine aggregate washing device. By setting an 80-100 mesh screen, it effectively screens out ultrafine sand that meets the particle size requirements, greatly improving the purity of the product. At the same time, the conveying mechanism, washing and separation mechanism, sedimentation tank and screw conveyor work together to greatly shorten the production cycle and reduce costs.

[0005] This utility model discloses an ultrafine aggregate washing device, comprising:

[0006] The vibrating frame includes a housing and a screen 1 fixed inside the housing, the screen 1 being 80-100 mesh;

[0007] The conveying mechanism is located below the vibrating frame;

[0008] The cleaning and separation mechanism is located at the output end of the conveying mechanism;

[0009] A sedimentation tank is installed at the output end of the cleaning and separation mechanism;

[0010] The screw conveyor has its feed end at the bottom of the sedimentation tank and its discharge end extending to the outside of the sedimentation tank.

[0011] As a preferred embodiment of this utility model, the tilt angle of the vibration frame is 15-25°.

[0012] As a preferred embodiment of this utility model, the vibrating frame further includes a second screen fixed inside the outer shell, the second screen having a hole diameter of 1-2mm, and the second screen being positioned above the first screen.

[0013] As a preferred embodiment of this utility model, the cleaning and separation mechanism includes:

[0014] The intermediate trough is used to receive materials conveyed by the conveying mechanism;

[0015] The hydrocyclone separator has its input end connected to the intermediate tank and its bottom output end connected to the sedimentation tank.

[0016] As a preferred embodiment of this utility model, the vibration frame further includes at least one crossbeam, which is arranged along the width direction of the outer shell.

[0017] As a preferred embodiment of this utility model, the vibration frame is provided with a non-stick coating.

[0018] As a preferred embodiment of this utility model, the vibration frame also includes an ultrasonic self-cleaning module.

[0019] As a preferred embodiment of this utility model, the vibration frequency of the vibrating frame is 20-30Hz.

[0020] As a preferred embodiment of this utility model, the bottom wall of the sedimentation tank slopes downward from the end to the middle.

[0021] As a preferred embodiment of this utility model, the surface of the spiral blades of the screw conveyor is provided with a wear-resistant coating.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: the 80-100 mesh screen in the vibrating frame can achieve precise screening, effectively screen out ultrafine sand that meets the particle size requirements, improve product purity, and meet the stringent aggregate quality requirements of industries such as construction and high-end manufacturing. The conveying mechanism, washing and separation mechanism, sedimentation tank and screw conveyor work together to build a smooth workflow, greatly shorten the production cycle, reduce costs, and efficiently produce high-quality ultrafine sand. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the vibration frame;

[0025] Figure 3 It is a cross-sectional view of the vibrating frame;

[0026] The attached diagram is labeled as follows: 1. Vibrating frame; 11. Outer shell; 12. Screen 1; 13. Screen 2; 14. Crossbeam; 15. Ultrasonic self-cleaning module; 2. Conveying mechanism; 3. Cleaning and separation mechanism; 31. Intermediate tank; 32. Hydrocyclone separator; 4. Sedimentation tank; 5. Screw conveyor. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Example:

[0031] Reference Figures 1-3 This embodiment provides an ultrafine aggregate washing device, comprising:

[0032] The vibrating frame 1 includes a housing 11 and a screen 12 fixed inside the housing 11. The housing 11 is made of durable Q235 steel to ensure the overall structural strength. The screen 12 is 80-100 mesh and is made of stainless steel wire mesh. It is firmly fixed inside the housing 11 by special clamps to ensure that it will not shift under high-frequency vibration. The screen aperture size of the 80 mesh screen 12 is 0.178 mm, and the screen aperture size of the 100 mesh screen 12 is 0.152 mm. This size range allows tiny sand particles that meet the ultrafine aggregate standard to pass through, while effectively blocking slightly larger particles, providing relatively pure ultrafine sand raw materials for subsequent washing and separation work, and ensuring that the device produces ultrafine aggregate products that meet the requirements.

[0033] The conveying mechanism 2 is located below the vibrating frame 1. The conveying mechanism 2 adopts a V-shaped conveyor belt. The belt material is rubber, which has good flexibility and wear resistance. The ultrafine sand passing through the vibrating frame 1 falls onto the conveying mechanism 2, and the conveying mechanism 2 transports the ultrafine sand to the washing and separation mechanism 3.

[0034] The cleaning and separation mechanism 3 is located at the output end of the conveying mechanism 2 and is used to clean and separate ultrafine sand.

[0035] Sedimentation tank 4 is located at the output end of the cleaning and separation mechanism 3. It is made of concrete or metal, and the tank wall is waterproofed to prevent sewage leakage or corrosion.

[0036] The screw conveyor 5 has its feed end located at the bottom of the sedimentation tank 4 and its discharge end extending to the outside of the sedimentation tank 4.

[0037] The specific working process of this device is as follows: The sand and gravel to be treated are poured into the vibrating frame 1. The vibrating frame 1 starts to vibrate. Under the action of vibration, the ultrafine sand passes through the screen 12 and falls onto the conveying mechanism 2 below. Larger particles are separated from the vibrating frame 1 along the bottom of the vibrating frame 1. A conveyor belt can be installed at the bottom of the vibrating frame 1 to transport the larger particles to the designated position. The conveying mechanism 2 transports the ultrafine sand to the washing and separation mechanism 3. The washing and separation are carried out in the washing and separation mechanism 3. The separated ultrafine sand enters the sedimentation tank 4 for sedimentation. Finally, the ultrafine sand settled at the bottom is discharged by the screw conveyor 5.

[0038] In some embodiments of this utility model, the tilt angle of the vibrating frame 1 is 15-25°. By setting the vibrating frame 1 to the above-mentioned tilt angle, on the one hand, the sand and gravel can slide down naturally during the vibration process, reducing the possibility of blockage; on the other hand, the appropriate tilt angle ensures that the sand and gravel have enough residence time on the screen, so that the ultrafine sand can fully pass through the screen 12, thereby improving the screening efficiency.

[0039] In some embodiments of this utility model, reference is made to Figures 2-3 The vibrating frame 1 also includes a second screen 13 fixed inside the outer casing 11. The second screen 13 has a hole diameter of 1-2mm and is a perforated plate. It is fixed inside the outer casing 11 by welding or bolting. The second screen 13 is located above the first screen 12. When the sand and gravel to be processed enter the vibrating frame 1, they first come into contact with the second screen 13. Larger impurities are intercepted by the second screen 13, while smaller sand and gravel and ultrafine sand continue to move downwards and are further screened by the first screen 12. The second screen 13 plays a preliminary filtering role, intercepting larger impurities and preventing these impurities from damaging subsequent equipment. It also reduces the interference of impurities on the ultrafine sand washing process.

[0040] In some embodiments of this utility model, reference is made to Figure 1 The cleaning and separation mechanism 3 includes:

[0041] The intermediate trough 31 is made of stainless steel and has a certain volume. It is used to receive the materials conveyed by the conveying mechanism 2. A water inlet pipe is set on one side of the intermediate trough 31. The water inlet flow is controlled by a valve. Water is added to the intermediate trough 31 to mix with the ultrafine sand and to perform preliminary cleaning of the ultrafine sand.

[0042] The hydrocyclone separator 32 has its input end connected to the intermediate tank 31. A pump body is installed between the intermediate tank 31 and the hydrocyclone separator 32 to transport the mixed liquid in the intermediate tank 31 to the hydrocyclone separator 32. Its bottom output end is connected to the sedimentation tank 4.

[0043] After the conveying mechanism 2 transports the ultrafine sand to the intermediate tank 31, it opens the water inlet valve to add water to the intermediate tank 31, mixing the ultrafine sand with the water. The pump is then started to transport the mixture to the hydrocyclone separator 32. In the hydrocyclone separator 32, due to centrifugal force, the ultrafine sand and sewage are separated. The ultrafine sand flows into the sedimentation tank 4 from the bottom output end, while the sewage is discharged from the top outlet. The cleaning and separation mechanism 3, through the coordinated work of the intermediate tank 31 and the hydrocyclone separator 32, achieves efficient cleaning and separation of the ultrafine sand. The water mixing process in the intermediate tank 31 can initially remove impurities from the surface of the ultrafine sand. The hydrocyclone separator 32 uses centrifugal force to further separate the ultrafine sand and sewage, improving the cleaning and separation effect. This design can effectively remove impurities from the ultrafine sand, improve the quality of the ultrafine sand, and reduce the waste of water resources.

[0044] In some embodiments of this utility model, reference is made to Figure 2 The vibrating frame 1 also includes at least one crossbeam 14, which is set along the width of the outer shell 11. The crossbeam 14 is made of stainless steel and is fixed inside the outer shell 11 by welding or bolting. It is located above the screen 13. The number of crossbeams 14 can be determined according to the size of the vibrating frame 1 and actual needs. The setting of the crossbeam 14 effectively delays the time of sand and gravel on the vibrating frame 1, allowing the ultrafine sand to have more time to pass through the screen 12, thus improving the screening effect. Compared with the vibrating frame 1 without the crossbeam 14, the addition of the crossbeam 14 can better control the residence time of sand and gravel, making the screening process more uniform and further improving the screening efficiency and quality.

[0045] In some embodiments of this utility model, the vibrating frame 1 is provided with a non-stick coating. The non-stick coating is made of polytetrafluoroethylene and is sprayed on the inner wall of the outer shell 11, the screen 12, the screen 13 and the surface of the crossbeam 14. The non-stick coating effectively avoids the adhesion of materials, reduces the frequency of cleaning the vibrating frame 1, and improves the working efficiency of the equipment. At the same time, since the materials are not easy to adhere, the vibration effect of the vibrating frame 1 is better, further improving the screening effect.

[0046] In some embodiments of this utility model, the vibrating frame 1 further includes an ultrasonic self-cleaning module 15. The ultrasonic self-cleaning module 15 is installed on the outer shell 11 of the vibrating frame 1. The ultrasonic self-cleaning module 15 emits ultrasonic waves, which are transmitted to the screen surface through the outer shell 11 of the vibrating frame 1. The ultrasonic waves generate high-frequency vibrations on the screen surface, causing the particles blocked on the screen to fall off and restoring the screen's permeability. Compared with manual cleaning of the screen, the ultrasonic self-cleaning module 15 is more convenient and efficient, reducing manual operation and labor intensity.

[0047] In some embodiments of this utility model, the vibration frequency of the vibrating frame 1 is 20-30Hz. More specifically, the vibrating frame 1 is driven by a motor to generate vibration of the eccentric wheel. At a vibration frequency of 20-30Hz, the agglomerated fine sand can be dispersed, and the sand particles will not splash due to excessive vibration.

[0048] In some embodiments of this utility model, reference is made to Figure 1 The bottom wall of the sedimentation tank 4 slopes downward from the end to the middle, and the feed end of the screw conveyor 5 is located at the lowest point of the bottom of the sedimentation tank 4. The downward slope of the bottom wall of the sedimentation tank 4 is conducive to the sedimentation and collection of ultrafine sand. The sloped bottom wall causes the ultrafine sand to naturally gather in the middle, reducing the working range of the screw conveyor 5 and improving the collection efficiency. Compared with the flat bottom sedimentation tank 4, the sedimentation tank 4 with the sloped bottom wall can make better use of gravity, making the sedimentation and collection process smoother and improving the working efficiency of the entire cleaning device.

[0049] In some embodiments of this utility model, the surface of the spiral blades of the screw conveyor 5 is provided with a wear-resistant coating. The wear-resistant coating can be a tungsten carbide coating. During the process of the screw conveyor 5 conveying ultrafine sand, the wear-resistant coating on the surface of the spiral blades can resist the wear of the ultrafine sand and protect the spiral blades.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An apparatus for cleaning ultra-fine aggregate, characterized by comprising: The application relates to a vibrating frame (1) comprising a shell (11) and a first screen (12) fixed in the shell (11), wherein the first screen (12) is 80-100 mesh; a conveying mechanism (2) arranged below the vibrating frame (1); a cleaning and separating mechanism (3) arranged at the output end of the conveying mechanism (2); a sedimentation tank (4) arranged at the output end of the cleaning and separating mechanism (3); and a screw conveyor (5) with an input end at the bottom of the sedimentation tank (4) and an output end extending outside the sedimentation tank (4). The vibrating frame (1) has an inclination angle of 15-25 degrees. The vibrating frame (1) further comprises a second screen (13) fixed in the shell (11), wherein the second screen (13) has a pore diameter of 1-2 mm and is arranged above the first screen (12). The cleaning and separating mechanism (3) comprises a middle tank (31) for receiving the material conveyed by the conveying mechanism (2); and a cyclone separator (32) with an input end communicated with the middle tank (31) and a bottom output end communicated with the sedimentation tank (4). The vibrating frame (1) further comprises at least one cross arm (14) arranged along the width direction of the shell (11). The vibrating frame (1) is provided with a non-stick coating.

2. The superfines washing apparatus of claim 1, wherein The vibrating frame (1) further comprises an ultrasonic self-cleaning module (15).

3. The superfines washing apparatus of claim 1, wherein The vibrating frequency of the vibrating frame (1) is 20-30 Hz.

4. The superfines washing apparatus of claim 1, wherein The inner bottom wall of the sedimentation tank (4) is inclined downward from the end to the middle. The screw blade surface of the screw conveyor (5) is provided with a wear-resistant coating. ​ 5. The superfines washing apparatus of claim 3, wherein ​ 6. The superfines washing apparatus of claim 1, wherein ​ 7. The superfines washing device as claimed in claim 1, wherein, ​ 8. The superfines washing device as claimed in claim 1, wherein, ​ 9. The superfines washing device as claimed in claim 1, wherein, ​ 10. The superfines washing device as claimed in claim 1, wherein, ​

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