An adjustable vibration frequency coal washing screening machine

Abstract

This utility model relates to the field of coal washing and screening, and more particularly to an adjustable vibration frequency coal washing and screening machine. It includes a base, guide rods, a vibrating frame, a first telescopic spring, a vibrating motor, and a screen. Two guide rods are connected to the left and right sides of the base, and the vibrating frame is slidably connected between the guide rods. A first telescopic spring connects each guide rod to the vibrating frame. A vibrating motor is connected to the front of the vibrating frame, and the screen is slidably engaged with the upper and lower parts of the vibrating frame. This utility model installs the screen by engaging it with the vibrating frame and then fixing it with a limiting frame. The vibration frequency of the vibrating motor is then adjusted, and coal is poured onto the screen for washing and screening. This allows for simultaneous installation and fixing of the screen while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. It facilitates screen replacement, reduces maintenance costs, improves coal processing efficiency, and is easy to use.

Description

Technical Field

[0001] This utility model relates to the field of coal washing and screening, and in particular to a coal washing and screening machine with adjustable vibration frequency. Background Technology

[0002] With the continuous growth of global energy demand, coal, as one of the main energy sources, occupies an important position in the energy structure. However, raw coal contains a large number of impurities, such as stones, soil, and other minerals. These impurities not only reduce the quality and efficiency of coal utilization but may also damage combustion equipment. Therefore, coal washing technology has become a crucial step in improving coal quality and utilization efficiency.

[0003] Current coal processing typically involves pouring coal into coal washing and screening equipment, which then washes and screens the coal. However, most current coal screening equipment uses a fixed-frequency vibration mode, which is not only inefficient but also has poor adaptability, making it difficult to adapt to coal materials of different particle sizes and densities. In addition, the installation and disassembly of the screens on the equipment is cumbersome, increasing the difficulty of operation and maintenance costs, making it very inconvenient to use.

[0004] Therefore, it is necessary to design an adjustable vibration frequency coal washing and screening machine that can install and fix a screen while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. This machine should be simple to operate, easy to replace the screen, reduce maintenance costs, improve the efficiency of coal processing, and be convenient to use. Utility Model Content

[0005] To overcome the shortcomings of current coal screening equipment, which mostly adopts a fixed-frequency vibration mode, resulting in low processing efficiency, poor adaptability, and difficulty in adapting to coal materials of different particle sizes and densities, as well as the cumbersome process of installing and disassembling the screen, increasing operational difficulty and maintenance costs, this utility model provides an adjustable vibration frequency coal washing and screening machine that can install and fix the screen while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. It is simple to operate, facilitates screen replacement, reduces maintenance costs, improves coal processing efficiency, and is easy to use.

[0006] The technical solution of this utility model is: an adjustable vibration frequency coal washing screening machine, including a base, guide rods, a vibrating frame, a first telescopic spring, a vibrating motor, a screen, a limiting component, an anti-clogging component, and a clearing component. The base has two guide rods connected to its left and right sides, and a vibrating frame is slidably connected between the guide rods. A first telescopic spring is connected between each guide rod and the vibrating frame. A vibrating motor is connected to the front of the vibrating frame. A screen is slidably engaged on both the upper and lower parts of the vibrating frame. Limiting components for limiting the screen are provided on the lower left and upper right parts of the vibrating frame. An anti-clogging component for spraying water to prevent screen blockage during coal washing is provided on the upper part of the vibrating frame. A clearing component for preventing blockage of the vibrating frame is provided on the lower part of the vibrating frame.

[0007] Preferably, the limiting component includes a rotating frame, a torsion spring, a limiting frame, and a second telescopic spring. The rotating frame is rotatably connected to the lower left and upper right parts of the vibration frame. The rotating frame is connected to the vibration frame by a torsion spring. The limiting frame is slidably connected to the upper part of the rotating frame. The limiting frame is engaged with the adjacent screen. The limiting frame is connected to the rotating frame on the same side by a second telescopic spring.

[0008] Preferably, pull rings are provided on the sides of the restraint frames that are far apart from each other.

[0009] Preferably, the anti-clogging component includes a first motor, a lead screw, and a water spray frame. The first motor is connected to the front upper part of the vibration frame, and the lead screw is rotatably connected to the upper part of the vibration frame. The lead screw is connected to the output shaft of the first motor, and the water spray frame is threadedly connected to the lead screw. The water spray frame is slidably connected to the vibration frame.

[0010] Preferably, the unblocking assembly includes a second motor, a rotating shaft, bevel gears, and an unblocking frame. The second motor is connected to the lower front side of the vibrating frame, and the rotating shaft is rotatably connected to the lower front of the vibrating frame. The rotating shaft is connected to the output shaft of the second motor. The unblocking frame is rotatably connected to the lower part of the vibrating frame, and bevel gears are connected to the rear side of the rotating shaft and the upper part of the unblocking frame. The two bevel gears mesh with each other.

[0011] Preferably, a water trough is provided on the inner side of the lower part of the vibration frame.

[0012] This utility model has the following advantages: 1. This utility model connects the screen to the vibrating frame and then fixes it with a limiting frame to install the screen. Then, the vibration frequency of the vibrating motor is adjusted, and then the coal is poured onto the screen for washing and screening. This allows for the installation and fixing of the screen while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. It facilitates screen replacement, reduces maintenance costs, improves coal processing efficiency, and is easy to use.

[0013] 2. During the outflow process, the second motor is started, which drives the rotating shaft to rotate, causing the corresponding bevel gear to rotate. The two bevel gears mesh with each other, causing the unblocking frame to rotate and unblock the lower part of the vibrating frame. This allows the lower part of the vibrating frame to be unblocked during the coal washing and screening process, preventing blockage from affecting the discharge of sewage and impurities, improving the sewage outflow speed and efficiency, and further improving the processing efficiency.

[0014] 3. This utility model uses an external water source connected to the water spray frame, allowing water to enter and flow out. When coal is poured in, water is sprayed out to suppress dust. Then, the screw rotates, and the water spray frame moves under the action of the screw thread to spray water to wash the coal. Thus, water can be sprayed to suppress dust when the coal is poured in, and coal can be washed after the coal is poured in, preventing dust from flying, improving the working environment, preventing screen blockage, and improving the safety of use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the support base of this utility model.

[0018] Figure 4 This is a three-dimensional cross-sectional view of the screen and water spray frame components of this utility model.

[0019] Figure 5 This is a three-dimensional cross-sectional view of the rotating frame and limiting frame components of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1_base, 2_guide rod, 3_vibration frame, 4_first telescopic spring, 5_vibration motor, 6_screen, 7_rotating frame, 8_torsion spring, 9_limiting frame, 10_second telescopic spring, 11_first motor, 12_lead screw, 13_spray frame, 14_second motor, 15_lower trough, 16_rotating shaft, 17_bevel gear, 18_drainage frame. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] An adjustable vibration frequency coal washing screening machine, such as Figures 1-5As shown, the device includes a base 1, guide rods 2, a vibrating frame 3, a first telescopic spring 4, a vibrating motor 5, a screen 6, a limiting component, an anti-blocking component, and a clearing component. The base 1 has two guide rods 2 connected to its left and right sides, and the vibrating frame 3 is slidably connected between the guide rods 2. The first telescopic spring 4 is connected between each guide rod 2 and the vibrating frame 3. The vibrating motor 5 is connected to the front of the vibrating frame 3. The screen 6 is slidably engaged with the upper and lower parts of the vibrating frame 3. The lower left and upper right parts of the vibrating frame 3 are provided with features for limiting the screen 6. The limiting assembly for the position includes a rotating frame 7, a torsion spring 8, a limiting frame 9, and a second telescopic spring 10. The rotating frame 7 is rotatably connected to the lower left and upper right parts of the vibrating frame 3. The torsion spring 8 connects the rotating frame 7 to the vibrating frame 3. The limiting frame 9 is slidably connected to the upper part of the rotating frame 7. The limiting frame 9 engages with adjacent screens 6. Pull rings are provided on the opposite sides of the limiting frame 9 for easy manipulation. The second telescopic spring 10 connects the limiting frame 9 to the rotating frame 7 on the same side. A spring 10 is provided. The upper part of the vibrating frame 3 is equipped with an anti-clogging component for spraying water during coal washing to prevent clogging of the screen 6. The anti-clogging component includes a first motor 11, a lead screw 12, and a water spray frame 13. The first motor 11 is connected to the front upper part of the vibrating frame 3. The lead screw 12 is rotatably connected to the upper part of the vibrating frame 3 and is connected to the output shaft of the first motor 11. The water spray frame 13 is threadedly connected to the lead screw 12 and is slidably connected to the vibrating frame 3. The lower part of the vibrating frame 3 is equipped with a device to prevent clogging. The unblocking assembly includes a second motor 14, a rotating shaft 16, bevel gears 17, and an unblocking frame 18. The second motor 14 is connected to the lower front side of the vibrating frame 3. A drain trough 15 is opened on the lower inner side of the vibrating frame 3 to facilitate the outflow of sewage. The rotating shaft 16 is rotatably connected to the lower front part of the vibrating frame 3. The rotating shaft 16 is connected to the output shaft of the second motor 14. The unblocking frame 18 is rotatably connected to the lower part of the vibrating frame 3. The bevel gears 17 are connected to the rear side of the rotating shaft 16 and the upper part of the unblocking frame 18, and the two bevel gears 17 mesh with each other.

[0023] When a coal washing and screening machine is needed for coal processing, this device can be used. The base 1 is brought into contact with the ground. The rotating frame 7 is then manually rotated, causing the torsion spring 8 to deform. This brings the screen 6 into contact with the vibrating frame 3. The screen 6 is then pushed to move and engage with the vibrating frame 3 for installation. The rotating frame 7 is then released, causing the torsion spring 8 to rotate back to its original position. The rotating frame 7 rotates in the opposite direction to reset, bringing the limiting frame 9 into contact with the screen 6. The limiting frame 9 moves and resets to engage with the screen 6. The second telescopic spring 10 is stretched and resets, thus fixing the screen 6. Finally, an external water source is connected to the water spray frame 13, allowing water to flow out of the water spray frame 13. Next, coal is poured into the vibrating frame 3, causing it to fall onto the upper screen 6. Water is sprayed to suppress dust. Then, the first motor 11 is started, driving the lead screw 12 to rotate. The screw causes the water spray frame 13 to move and spray water to wash the coal. This allows for simultaneous dust suppression during coal pouring and coal washing after pouring, preventing dust from flying, improving the working environment, preventing screen 6 from clogging, and enhancing safety. During the coal washing process, a frequency converter connected to the vibrating motor 5 is used to control and adjust the speed of the vibrating motor 5, thereby adjusting the vibration frequency. The vibrating motor 5 is then started. The operation causes the vibrating frame 3 to vibrate, moving it up and down along the guide rod 2. The first telescopic spring 4 is compressed and then reset, causing the screen 6 to vibrate, thus screening the coal. Larger pieces of coal move along the upper screen 6 and are discharged, while the remaining coal falls onto the lower screen 6 and is discharged. Wastewater, dust, mud, and other fine impurities flow into the drain trough 15. During this outflow, the second motor 14 is activated, driving the rotating shaft 16 to rotate, causing the corresponding bevel gear 17 to rotate. The two bevel gears 17 mesh with each other, causing the unblocking frame 18 to rotate and unblock the lower part of the vibrating frame 3. This allows for unblocking of the lower part of the vibrating frame 3 during coal washing and screening, preventing blockages that could affect the discharge of wastewater and impurities, improving wastewater flow speed and efficiency, and increasing processing efficiency. When the screen 6 is worn or damaged after prolonged use, the limiting frame 9 is moved by pulling the pull ring, stretching the second telescopic spring 10. Then, the rotating frame 7 is rotated, deforming the torsion spring 8. The screen 6 is then pulled off for replacement, and a new screen 6 is installed. The rotating frame 7 is then released, the torsion spring 8 rotates back to its original position, and the rotating frame 7 rotates in the opposite direction to reset. The pull ring is then released again, the second telescopic spring 10 rebounds, and the limiting frame 9 moves in the opposite direction to reset and engages with the screen 6 for fixation.This allows for the simultaneous installation and fixing of the screen 6 while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. The operation is simple, the screen 6 is easy to replace, maintenance costs are reduced, coal processing efficiency is improved, and it is convenient to use. After washing and screening, the vibration motor 5, the first motor 11, and the second motor 14 are turned off, and then the water spray frame 13 is disconnected from the water source. The device can then be cleaned.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An adjustable vibration frequency coal washing screening machine, characterized in that, The device includes a base (1), guide rods (2), a vibrating frame (3), a first telescopic spring (4), a vibrating motor (5), a screen (6), a limiting component, an anti-blocking component, and a clearing component. The base (1) is connected to two guide rods (2) on both the left and right sides. The vibrating frame (3) is slidably connected between the guide rods (2). The first telescopic spring (4) is connected between the guide rods (2) and the vibrating frame (3). The vibrating motor (5) is connected to the front of the vibrating frame (3). The screen (6) is slidably engaged on both the upper and lower parts of the vibrating frame (3). The lower left and upper right parts of the vibrating frame (3) are equipped with limiting components for limiting the screen (6). The upper part of the vibrating frame (3) is equipped with an anti-blocking component for spraying water to prevent the screen (6) from clogging during coal washing. The lower part of the vibrating frame (3) is equipped with a clearing component for preventing the vibrating frame (3) from clogging.

2. The adjustable vibration frequency coal washing screening machine according to claim 1, characterized in that, The limiting assembly includes a rotating frame (7), a torsion spring (8), a limiting frame (9), and a second telescopic spring (10). The rotating frame (7) is rotatably connected to the lower left and upper right parts of the vibration frame (3). The rotating frame (7) is connected to the vibration frame (3) by a torsion spring (8). The limiting frame (9) is slidably connected to the upper part of the rotating frame (7). The limiting frame (9) is engaged with the adjacent screen (6). The limiting frame (9) is connected to the rotating frame (7) on the same side by a second telescopic spring (10).

3. The adjustable vibration frequency coal washing screening machine according to claim 2, characterized in that, Pull rings are provided on the opposite sides of the restraint frame (9).

4. The adjustable vibration frequency coal washing screening machine according to claim 3, characterized in that, The anti-clogging component includes a first motor (11), a lead screw (12), and a water spray frame (13). The first motor (11) is connected to the front upper part of the vibration frame (3), and the lead screw (12) is rotatably connected to the upper part of the vibration frame (3). The lead screw (12) is connected to the output shaft of the first motor (11), and the water spray frame (13) is threadedly connected to the lead screw (12). The water spray frame (13) is slidably connected to the vibration frame (3).

5. The adjustable vibration frequency coal washing screening machine according to claim 4, characterized in that, The unblocking assembly includes a second motor (14), a rotating shaft (16), a bevel gear (17), and an unblocking frame (18). The second motor (14) is connected to the lower front side of the vibrating frame (3). The rotating shaft (16) is rotatably connected to the lower front part of the vibrating frame (3). The rotating shaft (16) is connected to the output shaft of the second motor (14). The unblocking frame (18) is rotatably connected to the lower part of the vibrating frame (3). The bevel gear (17) is connected to both the rear side of the rotating shaft (16) and the upper part of the unblocking frame (18). The two bevel gears (17) mesh with each other.

6. The adjustable vibration frequency coal washing screening machine according to claim 5, characterized in that, A water trough (15) is opened on the inner side of the lower part of the vibration frame (3).

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