Variable-speed coal screening device

Abstract

The invention provides a variable-speed coal screening device. The variable-speed coal screening device comprises a top cover plate, a rear plate, a connecting transmission belt, a shaft belt wheel, a small transmission belt and a motor. The two sides of the rear plate are each provided with a set of square grooves, and the square grooves in the two sides of the rear plate are each internally connected with a set of side plates in a clamped mode. Six sets of circular connecting holes are formed in the side plates on the two sides of the rear plate respectively. A circular connecting shaft is arranged on one side of the shaft belt wheel, and the shaft belt wheel is rotationally connected to the side plate through the circular connecting shaft on one side. An annular groove is formed in the inner side of the shaft belt wheel. According to the variable-speed coal screening device, the multiple sets of screening belts are arranged, coal of different sizes is screened out at the same time, and the screening efficiency is improved. A power device is arranged, the whole device is driven by a motor, and the transmission speed of the device is different through belt wheels of different sizes so as to cope with coal of different sizes. The whole screening and power device is arranged, the design is simple, the manufacturing cost and the maintenance cost are low, and popularization and use are easy.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal screening equipment, and particularly relates to a variable-speed coal screening device. Background Art

[0002] In the coal mining and processing industries, coal screening is a key link to ensure coal quality and achieve hierarchical utilization. After coal is mined from the mine, it is often mixed with impurities such as gangue and slime, and the particle sizes are uneven. It must be separated and classified by screening equipment to meet the needs of different users. For example, thermal power plants require coal with uniform particle size as fuel to improve combustion efficiency; coking plants have strict requirements on coal particle size and impurity content to ensure coke quality. Traditional coal screening equipment usually operates at a fixed screening speed and is difficult to adapt to coal materials with different properties and particle size compositions. With the continuous improvement of the requirements for comprehensive utilization of coal resources and the diversification of the quality of mined coal, there is an urgent need for a device that can flexibly adjust the screening speed according to actual needs. The variable-speed coal screening device can dynamically adjust the screening speed according to the characteristics of coal materials, thereby improving screening efficiency and accuracy, reducing waste of coal resources, and is of great significance for promoting the efficient and refined development of the coal industry. Summary of the Invention

[0003] In view of this, the present invention aims to provide a variable-speed coal screening device to solve the problems of complex design, high manufacturing, repair and maintenance costs, and low working efficiency of the existing variable-speed coal screening device.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A variable-speed coal screening device.

[0006] Further, it includes a top cover plate, a rear plate, a connecting transmission belt, a shaft pulley, a small transmission belt, and a motor; there is a set of square grooves on each side of the rear plate, and a set of side plates are respectively clamped and connected in the square grooves on both sides of the rear plate; six sets of circular connection holes are respectively provided on the side plates on both sides of the rear plate; a circular connection shaft is provided on one side of the shaft pulley, and the shaft pulley is rotationally connected to the side plate through the circular connection shaft on one side; an annular groove is provided inside the shaft pulley, and the connecting transmission belt is rotationally connected in the inner annular groove of the shaft pulley; three sets of circular connection holes are respectively provided on both sides of the connecting transmission belt; three sets of circular connection shafts are respectively provided on both sides of the screening belt C, and both sides of the screening belt C are clamped and connected to both sides of the connecting transmission belt; a motor bracket is welded on one side of the front mouth plate, and two sets of square grooves are provided on the upper part of the motor bracket. Square blocks are respectively provided on both sides of the bottom connecting plate of the motor, and the square blocks on both sides of the bottom of the motor are clamped and connected to the upper part of the motor bracket.

[0007] Further, a pulley A, a pulley B, and a pulley C are fixedly connected to the rotating shaft on one side of the shaft pulley, and the pulley A, the pulley B, and the pulley C are rotationally connected by a small transmission belt.

[0008] Further, a set of connecting rotating shafts is provided on one side of the motor, and the connecting rotating shaft on one side of the motor is fixedly connected to the circular shaft on one side of the shaft pulley.

[0009] Further, a screening belt A, a screening belt B, and a screening belt C are fixedly connected to the circular holes on both sides of the connecting transmission belt, and square leakage grooves are provided on each of the screening belt A, the screening belt B, and the screening belt C.

[0010] Further, a front mouth plate is clamped and connected to one side of the side plate clamped and connected to both sides of the rear plate; three square through grooves are provided on one side of the front mouth plate.

[0011] Further, a square groove is provided at the bottom of the top cover plate, and the square groove at the bottom of the top cover plate is clamped and connected to the tops of the front mouth plate, the side plate, and the rear plate.

[0012] Compared with the prior art, the variable-speed coal screening device of the present invention has the following beneficial effects:

[0013] (1) The multiple groups of screening belts of the present invention simultaneously screen coals of different sizes, improving the screening efficiency;

[0014] (2) The power device of the present invention is designed such that a single motor drives the entire device, and through pulleys of different sizes, the transmission speed is made different to handle coals of different sizes;

[0015] (3) By setting the overall screening and power devices, the present invention has a simple design, low manufacturing cost, low maintenance cost, and is easy to popularize and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a schematic diagram of the main structure according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the internal structure according to an embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of the main power device according to an embodiment of the present invention;

[0020] Figure 4 is a schematic cross-sectional view of the screening belt device according to an embodiment of the present invention.

[0021] Description of the reference numerals:

[0022] 1 - Top cover plate; 2 - Front opening plate; 3 - Side plate; 4 - Rear plate; 5 - Screening belt A; 6 - Connecting drive belt; 7 - Shaft pulley; 8 - Pulley A; 9 - Motor frame; 501 - Screening belt B; 502 - Screening belt C; 801 - Pulley B; 802 - Pulley C; 803 - Small drive belt; 901 - Motor. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0026] The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] As shown in the attached Figure 1 to the attached Figure 4 figures:

[0028] The present invention provides a variable-speed coal screening device, including a top cover plate 1, a rear plate 4, a connecting transmission belt 6, a shaft pulley 7, a small transmission belt 803, and a motor 901; there is a set of square grooves on each side of the rear plate 4, and a set of side plates 3 are respectively clamped and connected in the square grooves on both sides of the rear plate 4; six sets of circular connection holes are respectively provided on the side plates 3 on both sides of the rear plate 4; a circular connection shaft is provided on one side of the shaft pulley 7, and the shaft pulley 7 is rotationally connected to the side plate 3 through the circular connection shaft on one side; an annular groove is provided inside the shaft pulley 7, and the connecting transmission belt 6 is rotationally connected in the inner annular groove of the shaft pulley 7; three sets of circular connection holes are respectively provided on both sides of the connecting transmission belt 6; three sets of circular connection shafts are respectively provided on both sides of the screening belt C502, and the screening belt C502 is clamped and connected to both sides of the connecting transmission belt 6; a motor bracket 9 is welded on one side of the front mouth plate 2, and two sets of square grooves are provided on the upper part of the motor bracket 9. Square blocks are respectively provided on both sides of the bottom connecting plate of the motor 901, and the square blocks on both sides of the bottom of the motor 901 are clamped and connected to the upper part of the motor bracket 9.

[0029] Among them, a pulley A8, a pulley B801, and a pulley C802 are tightly connected to the rotating shaft on one side of the shaft pulley 7, and the pulley A8, the pulley B801, and the pulley C802 are rotationally connected by the small transmission belt 803. Through the connection of the small transmission belt 803, the transmission of different rotational speeds and torques can be realized, meeting the differential power requirements of multiple components of the equipment, and enabling the various parts of the equipment to operate synergistically and efficiently.

[0030] Among them, a connecting rotating shaft is provided on one side of the motor 901, and the connecting rotating shaft on one side of the motor 901 is tightly connected to the circular shaft on one side of the shaft pulley 7. The tight connection between the motor 901 and the shaft pulley 7 can efficiently and stably transmit the rotational power generated by the motor to the shaft pulley, driving components such as the pulley A8, the pulley B801, and the pulley C802 to operate synergistically, ensuring the continuity and reliability of the power supply of each component of the equipment, and guaranteeing the overall stable operation of the equipment. At the same time, this direct and stable connection method reduces the energy loss during the power transmission process and improves the transmission efficiency.

[0031] Among them, a screening belt A5, a screening belt B501, and a screening belt C502 are tightly connected in the circular holes on both sides of the connecting transmission belt 6. Square leakage grooves are respectively provided on the screening belt A5, the screening belt B501, and the screening belt C502. The screening belt A5, the screening belt B501, and the screening belt C502 are connected together by the connecting transmission belt 6 and operate synchronously, enabling continuous screening operations on materials. The square leakage grooves can accurately separate materials of different specifications according to their sizes, improving the screening efficiency and accuracy.

[0032] Among them, one side of the side plate 3 clamped and connected to both sides of the rear plate 4 is clamped and connected to the front opening plate 2; three groups of square through grooves are provided on one side of the front opening plate 2. The three groups of square through grooves on the front opening plate 2 provide a standardized channel for the transportation and passage of materials or components, can accurately adapt to different specifications of materials, facilitate the realization of automated transmission and sorting operations, and improve work efficiency.

[0033] Among them, a square groove is provided at the bottom of the top cover plate 1, and the square groove at the bottom of the top cover plate 1 is clamped and connected to the tops of the front opening plate 2, the side plate 3, and the rear plate 4. The clamping connection between the square groove at the bottom of the top cover plate 1 and the tops of the front opening plate 2, the side plate 3, and the rear plate 4 can effectively seal the upper space of the equipment, prevent dust and sundries from entering the interior of the equipment, protect the internal structure and components of the equipment, and improve the stability and reliability of the equipment operation. At the same time, this clamping design facilitates the quick disassembly and installation of the top cover plate. When the equipment is overhauled, maintained, or internal components are replaced, the top cover plate can be easily opened, greatly improving the convenience of equipment maintenance and reducing the downtime for maintenance.

[0034] The specific usage mode and function of this embodiment:

[0035] In the present invention, coal is transported and fed into the square opening above the top cover plate 1, the motor 901 is started, the motor 901 drives the pulley C802 to rotate, the small transmission belt 803 transmits the power of the pulley C802 to the pulley A8 and the pulley B801, the three groups of pulleys drive the shaft pulley 7 to rotate, the shaft pulley 7 drives the connecting transmission belt 6, and the connecting transmission belt 6 drives the screening belts A5, screening belts B501, and screening belts C502 to rotate, and then screening is carried out. Square grooves of different sizes are designed on the screening belts to complete the screening of coals of different sizes.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A variable speed coal screening device, characterized in that: It comprises a top cover plate (1), a rear plate (4), a connecting transmission belt (6), a shaft pulley (7), a small transmission belt (803) and a motor (901); The rear plate (4) has a group of square grooves on both sides, and a group of side plates (3) are respectively connected in the square grooves on both sides of the rear plate (4); the side plates (3) on both sides of the rear plate (4) are respectively provided with six groups of circular connection holes; a circular connection shaft is provided on one side of the shaft pulley (7), and the shaft pulley (7) is rotatably connected to the side plate (3) through the circular connection shaft on one side; An annular groove is provided on the inner side of the shaft pulley (7), and the connecting transmission belt (6) is rotatably connected in the inner annular groove of the shaft pulley (7); three groups of circular connecting holes are provided on both sides of the connecting transmission belt (6); three groups of circular connecting shafts are provided on both sides of the screening belt C (502), and both sides of the screening belt C (502) are clamped and connected to both sides of the connecting transmission belt (6); A motor frame (9) is welded to one side of the front plate (2), and two groups of square grooves are provided on the upper part of the motor frame (9). A group of square blocks are provided on both sides of the bottom connecting plate of the motor (901), and the square blocks on both sides of the bottom of the motor (901) are clamped and connected to the upper part of the motor frame (9).

2. A variable speed coal screening device according to claim 1, characterized in that: A pulley A (8), a pulley B (801), and a pulley C (802) are fastened to the rotating shaft on one side of the shaft pulley (7), and the pulley A (8), the pulley B (801), and the pulley C (802) are rotationally connected via a small transmission belt (803).

3. The variable speed coal screening device according to claim 1, characterized in that: A group of connecting shafts is provided on one side of the motor (901), and the connecting shafts on one side of the motor (901) are tightly connected to the circular shaft on one side of the shaft pulley (7).

4. The variable speed coal screening device according to claim 1, characterized in that: The circular holes on both sides of the connecting transmission belt (6) are fastened with a screening belt A (5), a screening belt B (501), and a screening belt C (502), and the screening belt A (5), the screening belt B (501), and the screening belt C (502) are each provided with a square leakage groove.

5. The variable speed coal screening device according to claim 1, characterized in that: One side of the side plates (3) connected by clamping at both sides of the rear plate (4) is clamped and connected with a front plate (2); one side of the front plate (2) is provided with three groups of square through grooves.

6. The variable speed coal screening device according to claim 1, characterized in that: The bottom of the top cover plate (1) is provided with a square groove, and the square groove at the bottom of the top cover plate (1) is clamped and connected to the top of the front plate (2), the side plate (3) and the rear plate (4).

Images