CN-122006879-A - Reduce finished aggregate needle piece content device

CN122006879ACN 122006879 ACN122006879 ACN 122006879ACN-122006879-A

Abstract

The invention provides a device for reducing the needle content of a finished aggregate, which comprises a base, a treatment box and a screening box which are sequentially connected from bottom to top, wherein the treatment box is fixedly supported by supporting legs, a shaping crusher is arranged at the center of the base, a feed hopper is arranged at the top of the screening box, a first round screen structure and a second round screen structure which are obliquely arranged are paved in the screening box in a layered manner, the aggregate screened by the first round screen structure enters the treatment box through a first feed pipe, the aggregate screened by the second round screen structure enters the treatment box through a second feed pipe, two symmetrically distributed screen frames are arranged in the treatment box, the special structure in the screen frames can be used for screening aggregate with qualified sizes and needle-shaped aggregate, and a collecting frame, a collecting hopper and a discharging pipe which are integrally arranged at the center of the bottom of the treatment box and are sequentially connected from top to bottom are used for collecting the needle-shaped aggregate screened in the treatment box. The needle-shaped aggregate screening device has the advantages of reasonable structural design, convenience in operation and maintenance, and improves the needle-shaped aggregate screening effect.

Inventors

WU JIANGHUA
ZHAO LE
WU TAO
HUI TAO
ZHANG ZHEN
YANG YONGKANG
Xue Nianwei
Lin Chenxu
WANG RUI

Assignees

中国电建集团华东勘测设计研究院有限公司
浙江华东工程建设管理有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (4)

1. The device for reducing the content of the finished aggregate needle sheets is characterized by comprising a base, a treatment box and a screening box which are sequentially connected from bottom to top, wherein the treatment box is supported and fixed with the base through supporting legs, and a shaping crusher is arranged at the center of the base; The top of the screening box is provided with a feed hopper, a first round screen structure and a second round screen structure which are obliquely arranged are paved in the screening box in an inner layer, aggregate screened by the first round screen structure enters the treatment box through a first feed pipe, and aggregate screened by the second round screen structure enters the treatment box through a second feed pipe; Two symmetrically distributed screen frames are arranged in the treatment box, each screen frame is provided with a top inclined towards the center and a strip-shaped screen structure is embedded in the top of the screen frame, a limiting plate parallel to the strip-shaped screen structure and a cylinder structure for controlling the limiting plate to lift are arranged in the screen frame, the bottom of the screen frame is funnel-shaped, the center of the bottom of the screen frame is communicated with a discharge pipe, a discharge channel with a plugging structure is arranged at the bottom, close to the center of the treatment box, of the screen frame, a shielding bar is arranged at the lower side of the limiting plate, close to the plugging structure, and the shielding bar is positioned between the plugging structure and the cylinder structure; The center of the bottom of the treatment box is provided with a collecting frame, a collecting hopper and a discharging pipe which are connected in sequence from top to bottom, the collecting frame is used for collecting aggregate discharged by the discharging channel, and the discharging pipe penetrates through the bottom plate of the treatment box and faces the shaping crusher.
2. The device for reducing the content of finished aggregate flakes according to claim 1, wherein the first round screen structure or the second round screen structure comprises a round screen and a vibrating motor with a fixed bottom surface connected with the round screen, and the strip-shaped screen structure comprises a strip-shaped screen and a vibrating motor with a fixed bottom surface connected with the strip-shaped screen.
3. The device for reducing the content of the finished aggregate needle sheets according to claim 1, wherein the plugging structure comprises a connecting rod and a plugging block, one end of the connecting rod is connected to the lower side of the limiting plate, the other end of the connecting rod is connected with the plugging block, and the plugging block is inserted into a discharge opening at the top of the discharge channel.
4. The device for reducing the needle content of the finished aggregate according to claim 1, wherein the sampling structure is arranged in the collecting frame and comprises two baffles which are arranged in pairs, the two baffles can block the lower row of the aggregate after being spliced, a pull plate is arranged at one outward end of each baffle, a limiting block is arranged at one inward end of each baffle, and magnetic attraction is realized between the limiting blocks.

Description

Reduce finished aggregate needle piece content device Technical Field The invention relates to the technical field of sand aggregate processing, in particular to a device for reducing the needle content of a finished aggregate. Background With the increasing demand of domestic infrastructure construction for sand aggregates, the development and utilization of sand aggregate resources are in the development period of industry at high speed. The machine-made gravels are the main raw materials of concrete, and the high content of the needle-shaped particles directly affects the compressive strength of the gelled sand gravel. Therefore, controlling the content of the needle-shaped particles is one of effective ways to reduce the void ratio of the mechanically crushed stone and improve the performance of the concrete. At present, in order to reduce the content of needle-shaped particles of machine-made broken stone and optimize the particle shape, the machine-made broken stone can be added into ores, and the edges and corners of the product are polished through a shaping procedure. However, most of aggregate with the particle shape meeting the standard requirement is polished and crushed by the crusher together with the irregular particles in the shaping process, so that the raw materials and energy are wasted greatly. In addition, the screen holes of the screen mesh in the conventional device are rectangular, and due to the slender needle-shaped aggregate shape, part of the needle-shaped aggregate can be longitudinally inserted into the screen holes and pass through the screen holes during the vibration screening, so that the screening effect on the needle-shaped aggregate is general. Disclosure of Invention The invention aims to provide the device for reducing the needle content of the finished aggregate, which has the advantages of reasonable structural design, convenience in operation, convenience in maintenance, capability of improving the needle-shaped aggregate screening effect, convenience in screening, sampling and observation and capability of ensuring the screening working quality. In order to achieve the above purpose, the present invention is realized by the following technical scheme: The device for reducing the content of the finished aggregate needle sheets comprises a base, a treatment box and a screening box which are sequentially connected from bottom to top, wherein the treatment box is fixedly supported by supporting legs, and a shaping crusher is arranged in the center of the base; The top of the screening box is provided with a feed hopper, a first round screen structure and a second round screen structure which are obliquely arranged are paved in the screening box in an inner layer, aggregate screened by the first round screen structure enters the treatment box through a first feed pipe, and aggregate screened by the second round screen structure enters the treatment box through a second feed pipe; Two symmetrically distributed screen frames are arranged in the treatment box, each screen frame is provided with a top inclined towards the center and a strip-shaped screen structure is embedded in the top of the screen frame, a limiting plate parallel to the strip-shaped screen structure and a cylinder structure for controlling the limiting plate to lift are arranged in the screen frame, the bottom of the screen frame is funnel-shaped, the center of the bottom of the screen frame is communicated with a discharge pipe, a discharge channel with a plugging structure is arranged at the bottom, close to the center of the treatment box, of the screen frame, a shielding bar is arranged at the lower side of the limiting plate, close to the plugging structure, and the shielding bar is positioned between the plugging structure and the cylinder structure; The center of the bottom of the treatment box is provided with a collecting frame, a collecting hopper and a discharging pipe which are connected in sequence from top to bottom, the collecting frame is used for collecting aggregate discharged by the discharging channel, and the discharging pipe penetrates through the bottom plate of the treatment box and faces the shaping crusher. Further, the first round screen structure or the second round screen structure comprises a round screen and a vibrating motor with the bottom surface connected and fixed, and the strip-shaped screen structure comprises a strip-shaped screen and a vibrating motor with the bottom surface connected and fixed. Further, the plugging structure comprises a connecting rod and a plugging block, one end of the connecting rod is connected to the lower side of the limiting plate, the other end of the connecting rod is connected with the plugging block, and the plugging block is inserted into a discharge opening at the top of the discharge channel. Further, be equipped with sampling structure in the collection frame, sampling structure is including two baffles that set up in pairs, and tw