Coal gangue powder concentrator
By designing a coal gangue air classifier, utilizing an air separation chamber and a multi-stage air volume adjustment mechanism, the problem of excessive dust content in coal gangue sand was solved, enabling the direct application of coal gangue sand in concrete and the resource utilization of dust.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-03-24
AI Technical Summary
The existing coal gangue sand making process produces finished sand with too high a powder content, making it unsuitable for direct use in preparing ordinary mortar and concrete, thus affecting water absorption.
Design a coal gangue air classifier that combines an air classifier chamber, a coal powder feed pipe, a coarse powder discharge pipe, a fine powder discharge pipe, and a dust discharge pipe, along with an air volume adjustment mechanism and a dust control mechanism, to perform multi-stage air classification under negative pressure, controlling the powder content in the coal gangue sand to be within 10%.
It effectively reduces the powder content in coal gangue sand to the standard for construction sand, enabling its direct application in concrete mixing production, and recovers coal gangue powder smaller than 0.5 mm in the dust as a low-calorific-value coal raw material or additive, thereby improving economic value.
Smart Images
Figure CN224025694U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to equipment manufacturing field especially relates to a coal gangue powder concentrator. BACKGROUND
[0002] Coal gangue sand can be applied in mortar and concrete due to its porous structure and high water absorption rate. The coal gangue sand is obtained by crushing coal gangue by a crusher and screening. However, the powder content in the coal gangue sand is usually between 20% and 30%, while the process of preparing ordinary mortar and ordinary concrete requires that the powder content in the coal gangue sand be about 10%, otherwise the water absorption rate of the coal gangue sand will be affected. The finished sand obtained by the existing coal gangue sand making process has a high powder content and cannot be directly used for preparing ordinary mortar and ordinary concrete. Therefore, there is an urgent need to design a powder concentrator for controlling the powder content in the finished sand in the coal gangue sand making process. SUMMARY
[0003] The utility model discloses a coal gangue powder concentrator which solves the above problems.
[0004] To achieve the above object, the utility model adopts the technical scheme of a coal gangue powder concentrator, which comprises a powder concentrator composed of a winnowing chamber, a coal powder feeding pipe, a coarse powder discharging pipe, a fine powder discharging pipe and a dust discharging pipe. The coal powder feeding pipe is arranged on the side of the winnowing chamber, the coarse powder discharging pipe is arranged at the bottom of the winnowing chamber, and the dust discharging pipe is vertically arranged at the top of the winnowing chamber. The fine powder discharging pipe is arranged on the right side of the upper part of the dust discharging pipe. The top of the coarse powder discharging pipe is provided with a micro-powder discharging port. The coal powder feeding pipe, the dust discharging pipe and the fine powder discharging pipe are all provided with air volume adjusting mechanisms with different air volumes. A dust adjusting mechanism for adjusting the dust angle of the coal powder is arranged between the coal powder feeding pipe and the winnowing chamber.
[0005] As a priority, the air volume adjusting mechanism is composed of a rotating motor, a rotating shaft and a wind baffle. The wind baffle is fixed on the rotating shaft. The two ends of the rotating shaft are arranged outside the shell of the powder concentrator and are rotatably connected to the powder concentrator. The rotating motor is in transmission connection with the rotating shaft. An angle limiting plate for limiting the rotating angle of the wind baffle is arranged in the powder concentrator.
[0006] As a priority, the angle limiting plate is fixed in the powder concentrator, and a limiting groove is formed in the angle limiting plate. The wind baffle is provided with a limiting rod matched with the limiting groove. The limiting rod is located in the limiting groove and is in sliding connection with the limiting groove.
[0007] As a priority, the air volume adjusting mechanism in the dust discharging pipe is located at the lower part of the dust discharging pipe, and the rotating shaft is located at a position left of the central axis of the coarse powder discharging pipe. When the wind baffle is rotated to the rightmost side, the front end of the wind baffle is located at the inlet of the fine powder discharging pipe.
[0008] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0009] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0010] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0011] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0012] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0013] As priority, the dust regulation mechanism is composed of grid blades, blade connecting rods, synchronous shafts and driving motors, the grid blades are composed of multiple groups of horizontally arranged air guide blades, the multiple groups of air guide blades are arranged in sequence and are spaced from top to bottom, the multiple groups of air guide blades are synchronously rotationally connected through the blade connecting rods, the two ends of the synchronous shafts are arranged outside the shell of the powder concentrator and are rotationally connected with the powder concentrator, the driving motor is located at one end of the synchronous shaft and is transmissionally connected with the synchronous shaft, and the air guide blades are respectively fixed on the corresponding synchronous shafts.
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] (1) The utility model discloses a coal gangue powder concentrator, which can select coal gangue sand generated in a coal gangue sand making process, and the powder content in the coal gangue sand can be controlled at about 10% under a negative pressure environment through multi-stage air volume adjustment, and the powder content after air separation can be reduced to the standard of building sand, so that the coal gangue sand can be directly used for concrete mixing production, which is very convenient.
[0016] (2) The utility model discloses a coal gangue powder concentrator, which can further air separate the dust after air separation in the air separation chamber, and can screen out coal gangue powder below 0.5mm from the dust, which can be sold as low-calorific-value coal raw material after drying, and the economic value can be improved. DRAWINGS
[0017] Figure 1 It is the whole structure schematic diagram of the utility model.
[0018] In the drawing: 1, air separation chamber, 2, coal powder feeding pipe, 3, coarse powder discharging pipe, 4, dust discharging pipe, 5, fine powder discharging pipe, 6, micro-powder discharging port, 7, air volume adjusting mechanism, 71, shaft, 72, wind shield, 73, angle limiting plate, 8, dust regulation mechanism, 81, synchronous shaft, 82, grid blade, 83, blade connecting rod, 84, air guide plate, 9, observation window, 10, angle steel. DETAILED DESCRIPTION
[0019] The utility model will be further explained below, specifically as follows: a coal gangue powder concentrator, refer to Figure 1 , including powder concentrator, the powder concentrator is by air separation chamber 1, coal powder feed pipe 2, coarse powder discharge pipe 3, fine powder discharge pipe 5 and dust discharge pipe 4 is composed, the coal powder feed pipe 2 is arranged in the side of air separation chamber 1, coarse powder discharge pipe 3 is arranged in the bottom of air separation chamber 1, dust discharge pipe 4 is vertically arranged in the top of air separation chamber 1, the fine powder discharge pipe 5 is set in the right side in the upper part of dust discharge pipe 4, the top of coarse powder discharge pipe 3 is equipped with micro powder discharge port 6, the coal powder feed pipe 2, dust discharge pipe 4 and fine powder discharge pipe 5 are all equipped with the air volume adjusting mechanism 7 of ventilation amount size, the coal powder feed pipe 2 and air separation chamber 1 between still are equipped with the dusting adjusting mechanism 8 of adjusting coal powder dusting angle.The utility model designs a kind of coal gangue powder concentrator, can carry out powder concentration to the coal gangue sand generated in coal gangue sand making process, under negative pressure environment, by multistage air volume adjustment, the powder content in coal gangue sand can be controlled at about 10%, the powder content in coal gangue sand after air separation reduces to building sand standard, can be directly used in concrete mixing production, it is very convenient.
[0020] The utility model is equipped with air volume adjusting mechanism 7 in the coal powder feed pipe 2, dust discharge pipe 4 and fine powder discharge pipe 5, under negative pressure environment, the air volume adjusting mechanism 7 in the coal powder feed pipe 2 can control the amount of feeding, when air separation effect is poor, the baffle 72 of air volume adjusting mechanism 7 can be rotated to right, that is, the amount of feeding can be reduced, to improve air separation effect.The air volume adjusting mechanism 7 in dust discharge pipe 4 can control negative pressure ventilation, when air separation effect is poor, the baffle 72 of air volume adjusting mechanism 7 can be rotated to vertical direction, at this time, negative pressure ventilation is maximum, dust separated out by air separation is negative pressure transported to bin by fine powder discharge pipe 5 and is recycled.
[0021] Because dust separated out by air separation contains a large amount of coal gangue powder less than 0.5 millimeter, coal gangue powder less than 0.5 millimeter can be sold as low calorific value coal raw material after drying, therefore, the utility model is equipped with micro powder discharge port 6 in the top of dust discharge pipe 4, when it is needed to screen out coal gangue powder below 0.5 millimeter from fine dust, the baffle 72 of air volume adjusting mechanism 7 in dust discharge pipe 4 is only rotated to the rightmost side, at this time, fine powder will enter from the left side of air volume adjusting mechanism 7 and form secondary air chamber in dust discharge pipe 4, larger dust particles will flow to left and be guided to fine powder discharge pipe 5 by baffle 72, coal gangue fine powder less than 0.5 millimeter will flow upward and be discharged from micro powder discharge port 6 to be collected and recycled, at this time, the air volume adjusting mechanism 7 in fine powder discharge pipe 5 can adjust negative pressure air volume of fine powder discharge pipe 5, so as to facilitate 0.5 millimeter coal gangue dust to be separated out in secondary air chamber.
[0022] In order to realize the air volume adjusting mechanism 7 to adjust the air volume or the feed quantity, the structure of the air volume adjusting mechanism is designed, and the specific structure is as follows: the air volume adjusting mechanism 7 is composed of a rotating motor, a rotating shaft 71 and a baffle 72, the baffle 72 is fixed on the rotating shaft 71, both ends of the rotating shaft 71 are arranged outside the shell of the powder concentrator and are rotatably connected with the powder concentrator, the rotating motor is in transmission connection with the rotating shaft 71, the rotating motor can drive the rotating shaft 71 to rotate, so as to adjust the rotating angle of the baffle 72, the rotating shaft 71 can also be manually driven, after the rotating shaft 71 is rotated to the position, a locking device is used to lock and fix the rotating shaft 71 to avoid rotation, the angle limiting plate 73 for limiting the rotating angle of the baffle 72 is further arranged in the powder concentrator, the rotating angle of the baffle 72 is limited, and the rotating angle is prevented from being too large to damage the inner wall of the winnowing machine, and the rotating angle of the baffle 72 of the air volume adjusting mechanism 7 can be adjusted on site according to the production conditions.
[0023] In order to limit the rotating angle of the baffle 72, the angle limiting plate 73 is designed as follows: the angle limiting plate 73 is fixed in the powder concentrator, and a limiting groove is formed in the angle limiting plate 73, the baffle 72 is provided with a limiting rod matched with the limiting groove, the limiting rod is located in the limiting groove and is in sliding connection with the limiting groove.
[0024] Since the coal gangue dust below 0.5 mm in the dust needs to be further winnowed, the installation position of the air volume adjusting mechanism 7 in the dust discharge pipe 4 is designed, the air volume adjusting mechanism 7 in the dust discharge pipe 4 is located at the lower part of the dust discharge pipe 4, the rotating shaft 71 is located at the left of the central axis of the coarse powder discharge pipe 3, when the baffle 72 is rotated to the rightmost side, the front end of the baffle 72 is located at the inlet of the fine powder discharge pipe 5, at this time, the right channel is equivalent to being closed, the fine powder changes the route and enters the dust discharge pipe 4 from the left side, the airflow circulation direction is away from the fine powder discharge pipe 5, so that the fine powder is not directly sucked into the fine powder discharge pipe 5, but is sucked out from the fine powder discharge port 6, and the heavier fine powder is sucked out from the fine powder discharge pipe 5, so that the coal gangue dust below 0.5 mm is recycled and sold for use, and the slightly larger coal gangue dust can be used as an auxiliary additive in the concrete mixing process, or can be used as fly ash as an additive in the preparation of coal gangue solidification or cementitious materials.
[0025] In addition, in order to improve the effective separation of coal gangue powder and coal gangue particles in the air separation chamber 1, a dust adjusting mechanism 8 for adjusting the dust angle is arranged between the coal powder feeding pipe 2 and the air separation chamber 1, the dust adjusting mechanism 8 is composed of a grid blade 82, a blade connecting rod 83, a synchronous rotating shaft 81 and a driving motor, the grid blade 82 is composed of a plurality of groups of horizontally arranged air guide blades, the plurality of groups of air guide blades are arranged in sequence and are spaced apart from top to bottom, the plurality of groups of air guide blades are synchronously connected through the blade connecting rod 83, the two ends of the synchronous rotating shaft 81 are arranged outside the shell of the powder concentrator and are rotatably connected with the powder concentrator, the driving motor is arranged at one end of the synchronous rotating shaft 81, and the synchronous rotating shaft 81 is drivingly connected, and the air guide blades are respectively fixed on the corresponding synchronous rotating shaft 81. In a negative pressure environment, larger particles of coal gangue sand directly fall, smaller particles and dust pass between the grid blades 82 and enter the air separation chamber 1, and are air separated through negative pressure, and the angle of the grid blade 82 can be adjusted by the driving motor, so that the dust angle can be adjusted, and the air separation effect can be further adjusted, and the larger the dust angle, the better the dust separation effect.
[0026] The grid blade 82 is further provided with an air guide plate 84, the air guide plate 84 is fixed on the uppermost group of grid blades 82 and faces the coal powder feeding pipe 2, and the air guide plate 84 and the baffle 72 of the air volume adjusting mechanism 7 in the coal powder feeding pipe 2 form an opening-adjustable discharge port.
[0027] The fine powder discharge pipe 5 and the micro-powder discharge port 6 are respectively communicated with the corresponding negative pressure bin through the negative pressure pipeline, so as to provide negative pressure condition for the coal gangue powder concentrator.
[0028] The coal powder feeding pipe 2 is arranged on the powder concentrator at an angle of 60° and is communicated with the inside of the air separation chamber 1, at this time, the discharging effect is good, and the direct falling of larger particles can be realized without entering the air separation chamber 1 for air separation.
[0029] The coal powder feeding pipe 2 is further provided with an observation window 9 for observing the feeding condition, so that the staff can observe the discharging condition of the coal powder feeding pipe 2 in the powder concentrator from the outside. The outer shell of the powder concentrator is provided with an angle steel 10 for facilitating erection, so as to facilitate stable installation and erection of the powder concentrator.
[0030] The above has carried out the detailed introduction to the coal gangue powder selecting machine provided by the utility model, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, the above embodiment is only used for helping understanding the method and core idea of the utility model; simultaneously, for the general technical personnel in the field, according to the idea of the utility model, there will be changes in specific implementation mode and application range, and the change and improvement of the utility model will be possible, and will not exceed the conception and range defined in the additional claims, and the content of the specification should not be understood as the limitation of the utility model.
Claims
1. A coal gangue powder concentrator, comprising a powder concentrator, characterized in that: The air volume adjusting mechanism is composed of a rotating motor, a rotating shaft and a wind baffle, the wind baffle is fixed on the rotating shaft, both ends of the rotating shaft are arranged outside the shell of the powder selecting machine and are rotationally connected with the powder selecting machine, the rotating motor is in transmission connection with the rotating shaft, and the powder selecting machine is further provided with an angle limiting plate for limiting the rotating angle of the wind baffle.
2. The coal gangue powder concentrator according to claim 1, characterized in that: The angle limiting plate is fixed in the powder selecting machine, and a limiting groove is formed in the angle limiting plate, the wind baffle is provided with a limiting rod matched with the limiting groove, the limiting rod is located in the limiting groove and is in sliding connection with the limiting groove.
3. The coal gangue powder concentrator according to claim 2, characterized in that: The air volume adjusting mechanism in the dust discharging pipe is located at the lower part of the dust discharging pipe, the rotating shaft thereof is located at a position deviated to the left of the central axis of the coarse powder discharging pipe, and when the wind baffle is rotated to the rightmost position, the front end of the wind baffle is located at the inlet of the fine powder discharging pipe.
4. The coal gangue powder concentrator according to claim 2, characterized in that: The dust adjusting mechanism is composed of a grid blade, a blade connecting rod, a synchronous rotating shaft and a driving motor, the grid blade is composed of a plurality of horizontally arranged air guide blades, the plurality of air guide blades are sequentially and spacedly arranged from top to bottom, the plurality of air guide blades are in synchronous rotation connection through the blade connecting rod, both ends of the synchronous rotating shaft are arranged outside the shell of the powder selecting machine and are rotationally connected with the powder selecting machine, the driving motor is located at one end of the synchronous rotating shaft and is in transmission connection with the synchronous rotating shaft, and the air guide blades are respectively fixed on the corresponding synchronous rotating shafts.
5. The coal gangue powder concentrator according to claim 1, characterized in that: The grid blade is further provided with a wind guide plate, the wind guide plate is fixed on the uppermost group of grid blades and faces the coal powder feeding pipe.
6. The coal gangue powder concentrator according to claim 5, characterized in that: The fine powder discharging pipe and the micro-powder discharging port are respectively in communication with corresponding negative pressure hoppers through negative pressure pipelines.
7. The coal gangue powder concentrator according to claim 1, characterized in that: The coal powder feeding pipe is arranged on the powder selecting machine in a 60° inclination and is in communication with the interior of the air separation chamber.
8. The coal gangue powder concentrator according to claim 1, characterized in that: The coal powder feeding pipe is further provided with an observation window for observing the feeding condition.
9. The coal gangue powder concentrator according to claim 1, characterized in that: The shell of the powder selecting machine is provided with an angle steel for facilitating erection.
10. The coal gangue powder concentrator according to claim 1, characterized in that: