Coal gangue separation equipment

Abstract

The utility model discloses coal gangue separation equipment which comprises a screening mechanism and a feeding mechanism, a knocking mechanism is arranged on the screening mechanism, the screening mechanism comprises a supporting frame, a screening roller and a motor, the screening roller is installed on the supporting frame and rotationally connected with the supporting frame, and the motor is fixedly installed on the supporting frame and drives the screening roller. The knocking mechanism comprises a bearing seat, a knocking rod, a first rotating shaft and a torsion spring, the bearing seat is fixedly installed on the supporting frame, the torsion spring sleeves the first rotating shaft, and the knocking rod and the bearing seat are elastically and rotatably connected through cooperation of the first rotating shaft and the torsion spring. The screening device has the advantages of automatic blockage clearing, buffering feeding and high screening efficiency, and the problems that screening holes are prone to blockage, equipment is prone to damage and the maintenance frequency is high are solved.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically a coal gangue separation device. Background Technology

[0002] In the coal mining and processing process, coal gangue is a major associated mineral, and its separation is a crucial step in improving coal product quality and reducing the burden on subsequent coal preparation processes. Currently, coal gangue separation commonly employs screening equipment for preliminary screening, using screening drums or vibrating screens to initially classify coal and gangue of different particle sizes.

[0003] However, existing coal gangue screening equipment generally suffers from the following problems: First, in wet and sticky material environments, coal gangue and coal powder easily clog the screening holes on the screening drum, leading to a decrease in screening efficiency and, in severe cases, even causing equipment shutdown for cleaning, affecting production continuity; second, traditional screening equipment lacks effective anti-clogging design, usually requiring manual cleaning of the screen holes periodically, increasing labor intensity and maintenance costs; third, when the ore enters the screening drum, the excessive falling speed and impact force often cause problems such as drum deformation and screen damage, affecting equipment lifespan and operational stability. Therefore, a coal gangue separation device is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a coal gangue separation device with the advantages of automatic unblocking, buffer feeding, and high screening efficiency, which solves the problems of easy clogging of screening holes, easy damage to equipment, and high maintenance frequency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal gangue separation device, comprising a screening mechanism and a feeding mechanism, wherein the screening mechanism is provided with a striking mechanism;

[0006] The screening mechanism includes a support frame, a screening drum, and a motor. The screening drum is mounted on the support frame and rotatably connected thereto. The motor is fixedly mounted on the support frame to drive the screening drum. The striking mechanism includes a bearing seat, a striking rod, a first rotating shaft, and a torsion spring. The bearing seat is fixedly mounted on the support frame. The torsion spring is sleeved on the first rotating shaft. The striking rod and the bearing seat are elastically rotatably connected through the cooperation of the first rotating shaft and the torsion spring.

[0007] In a preferred embodiment of the coal gangue separation equipment of this utility model, the screening drum is provided with screening holes, and the top front end face of the striking rod is provided with a top material railing that cooperates with the screening holes.

[0008] As a preferred embodiment of the coal gangue separation equipment of this utility model, a rotating roller is sleeved on the top material railing.

[0009] As a preferred embodiment of the coal gangue separation equipment of this utility model, the front end face of the striking rod is provided with a rubber pad.

[0010] As a preferred embodiment of the coal gangue separation equipment of this utility model, the feeding mechanism includes a feeding hopper, a support rod, and a baffle. The support rod is fixedly installed on a support frame, the feeding hopper is fixedly installed on the support rod, a second rotating shaft is provided on the inner end face of the feeding hopper, and the top of the baffle is sleeved on the second rotating shaft and rotatably connected to the feeding hopper.

[0011] As a preferred embodiment of the coal gangue separation equipment of this utility model, the output shaft of the motor and the screening drum are provided with synchronous pulleys, the synchronous pulleys are fitted with synchronous belts for transmission, and the lower end of the screening drum is provided with a discharge plate fixedly connected to the support frame.

[0012] As a preferred embodiment of the coal gangue separation equipment of this utility model, the support frame is rotatably connected with a first guide wheel and a second guide wheel that cooperate with the screening drum.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a striking mechanism consisting of a bearing seat, a first rotating shaft, a torsion spring, and a striking rod, installed beside the screening drum. A rotatable roller is fitted onto the top material guide rail of the striking rod, and a rubber pad is placed on its front end. Under the action of the torsion spring, the striking rod remains in contact with the screening drum, allowing the top material guide rail to automatically insert into the screening holes. The rotating roller significantly reduces the frictional resistance when the top material guide rail moves against the drum surface, enabling it to slide continuously and smoothly into and out of the screening holes. The rubber pad acts as a buffer and absorbs energy. These structures work together to effectively solve the common problem of screen holes being blocked by wet, sticky materials or large materials during coal gangue screening. It automatically and promptly ejects materials stuck in the holes, ensuring the continuous smooth flow of the screening drum, significantly improving screening efficiency and equipment operation continuity, while reducing manual intervention required for unblocking and downtime caused by blockages.

[0015] 2. This utility model utilizes a feeding mechanism consisting of a feeding hopper, a support rod, a second rotating shaft, and a baffle. The top of the baffle is rotatably connected to the inner end face of the feeding hopper via the second rotating shaft, maintaining a vertical position solely by its own weight. When ore is fed into the feeding hopper, the baffle naturally forms a barrier. This structure cleverly utilizes the material's own weight and the baffle's blocking effect, producing a significant buffering effect during the ore's descent. This greatly reduces the speed and impact force of the ore's fall, directly solving the mechanical damage problems caused by the direct and violent impact of ore from a height on the surface of the screening drum in traditional equipment, such as drum deformation, screen breakage, and loosening of the support structure. It significantly reduces the impact load on key components, effectively extends the service life of the screening drum and the entire support structure, and reduces the equipment's maintenance frequency and cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Sectional view of AA in the middle;

[0019] Figure 4 For the present utility model Figure 3 Cross-sectional view of the middle section (BB);

[0020] Figure 5 For the present utility model Figure 3 Enlarged view at point C;

[0021] Figure 6 For the present utility model Figure 5 Enlarged view at point E in the middle;

[0022] Figure 7 For the present utility model Figure 4 Enlarged view of point D in the middle.

[0023] In the diagram: 1. Screening mechanism; 101. Support frame; 102. Screening drum; 103. Motor; 104. Synchronous pulley; 105. Synchronous belt; 106. First guide wheel; 107. Second guide wheel; 108. Screening hole; 109. Discharge plate; 2. Striking mechanism; 201. Bearing seat; 202. Striking rod; 203. First rotating shaft; 204. Torsion spring; 205. Top material railing; 206. Rotating roller; 207. Rubber pad; 3. Feeding mechanism; 301. Feeding hopper; 302. Support rod; 303. Baffle; 304. Second rotating shaft. Detailed Implementation

[0024] Please see Figures 1-7A coal gangue separation device includes a screening mechanism 1 and a feeding mechanism 3, wherein a striking mechanism 2 is provided on the screening mechanism 1.

[0025] The screening mechanism 1 includes a support frame 101, a screening drum 102, and a motor 103. The screening drum 102 is mounted on the support frame 101 and rotatably connected thereto. The motor 103 is fixedly mounted on the support frame 101 to drive the screening drum 102. The striking mechanism 2 includes a bearing seat 201, a striking rod 202, a first rotating shaft 203, and a torsion spring 204. The bearing seat 201 is fixedly mounted on the support frame 101. The torsion spring 204 is sleeved on the first rotating shaft 203. The striking rod 202 and the bearing seat 201 are elastically rotatably connected through the cooperation of the first rotating shaft 203 and the torsion spring 204.

[0026] Furthermore, the screening drum 102 is provided with screening holes 108, and the top front end face of the striking rod 202 is provided with a top material railing 205 that cooperates with the screening holes 108.

[0027] Under the reset action of the first rotating shaft 203 and the torsion spring 204, the striking rod 202 keeps in contact with the screening drum 102. The striking rod 202 at the front end of the striking rod 202 is inserted into the screening hole 108 to push out the material stuck in the screening hole 108, thereby keeping the screening drum 102 unobstructed.

[0028] Furthermore, a rotating roller 206 is fitted onto the top material railing 205.

[0029] By reducing the resistance between the striking rod 202 and the screening drum 102 by the rotating roller 206, the material ejector bar 205 can smoothly pass over the edge of the screening hole 108 and smoothly enter the next screening hole 108 to eject material during the rotation of the screening drum 102, thereby achieving continuous material ejection.

[0030] Furthermore, a rubber pad 207 is provided on the front end face of the striking rod 202.

[0031] The rubber pad 207 reduces the impact force when the screening rod hits the screening drum 102, which on the one hand improves the service life of the screening drum 102, and on the other hand reduces the noise generated during the impact, thus improving the comfort of employees.

[0032] Furthermore, the feeding mechanism 3 includes a feeding hopper 301, a support rod 302, and a baffle 303. The support rod 302 is fixedly installed on the support frame 101, and the feeding hopper 301 is fixedly installed on the support rod 302. A second rotating shaft 304 is provided on the inner end face of the feeding hopper 301, and the top of the baffle 303 is sleeved on the second rotating shaft 304 and rotatably connected to the feeding hopper 301.

[0033] The baffle 303 remains vertical under its own weight. When the ore enters the feeding hopper 301, the baffle 303 blocks the ore, thereby increasing the resistance when the ore falls and preventing the ore from having too much impact on the screening drum 102 when falling, which would cause the screening drum 102 to be frequently damaged and improve the service life of the equipment.

[0034] Furthermore, a synchronous pulley 104 is provided on the output shaft of the motor 103 and the screening drum 102. A synchronous belt 105 for transmission is sleeved on the synchronous pulley 104. A discharge plate 109 fixedly connected to the support frame 101 is provided at the lower end of the screening drum 102.

[0035] The motor 103 drives the screening drum 102 to rotate through the synchronous pulley 104 and the synchronous belt 105, so that large pieces of gangue are intercepted by the screening drum 102 and discharged from the end of the screening drum 102, while small pieces of gangue and coal fall through the screening drum 102 into the discharge plate 109 for subsequent flotation screening.

[0036] Furthermore, a first guide wheel 106 and a second guide wheel 107 that cooperate with the screening drum 102 are rotatably connected to the support frame 101.

[0037] The first guide wheel 106 and the second guide wheel 107 guide the screening drum 102, reducing the friction between the support frame 101 and the screening drum 102, thereby reducing equipment wear, extending the service life of the equipment, and improving the smoothness of the screening process.

[0038] In operation, the coal gangue material to be separated is first poured into the feeding hopper 301 of the feeding mechanism 3. The baffle 303 inside the feeding hopper 301 remains vertical under its own weight, blocking the material and slowing its descent to prevent excessive impact on the screening drum 102. The motor 103 is then started. The output shaft of the motor 103 drives the screening drum 102 to rotate via the synchronous pulley 104 and synchronous belt 105. Large pieces of gangue are intercepted by the screening drum 102 and discharged from its end. Smaller pieces of gangue and coal fall through the screening holes 108 on the screening drum 102 into the discharge plate 109 below for subsequent flotation screening. During the rotation of the screening drum 102, the striking mechanism 2 operates. The striking rod 202, under the reset action of the first rotating shaft 203 and the torsion spring 204... The material pusher 205, which remains in contact with the screening drum 102 at all times, is inserted into the screening hole 108 at its front end. If material gets stuck in the screening hole 108, the material pusher 205 can push it out, ensuring the smooth flow of the screening drum 102. The rotating roller 206 on the material pusher 205 can reduce the resistance between it and the screening drum 102, allowing it to smoothly enter the next screening hole 108 for continuous material pushing. At the same time, the rubber pad 207 on the front end of the striking rod 202 can reduce the impact force during impact, extend the service life of the screening drum 102 and reduce noise. In addition, the first guide wheel 106 and the second guide wheel 107 on the support frame 101 cooperate with the screening drum 102 to guide it, reduce friction, reduce equipment wear, and improve screening smoothness.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal gangue separation device, comprising a screening mechanism (1) and a feeding mechanism (3), characterized in that: The screening mechanism (1) is equipped with a striking mechanism (2); The screening mechanism (1) includes a support frame (101), a screening drum (102), and a motor (103). The screening drum (102) is mounted on the support frame (101) and rotatably connected thereto. The motor (103) is fixedly mounted on the support frame (101) to drive the screening drum (102). The striking mechanism (2) includes a bearing seat (201), a striking rod (202), a first rotating shaft (203), and a torsion spring (204). The bearing seat (201) is fixedly mounted on the support frame (101). The torsion spring (204) is sleeved on the first rotating shaft (203). The striking rod (202) and the bearing seat (201) are elastically rotatably connected through the first rotating shaft (203) and the torsion spring (204).

2. The coal gangue separation equipment as described in claim 1, characterized in that: The screening drum (102) is provided with screening holes (108), and the top front end face of the striking rod (202) is provided with a top material railing (205) that cooperates with the screening holes (108).

3. The coal gangue separation equipment as described in claim 2, characterized in that: A rotating roller (206) is fitted onto the top material railing (205).

4. The coal gangue separation equipment as described in claim 1, characterized in that: The front end face of the striking rod (202) is provided with a rubber pad (207).

5. The coal gangue separation equipment as described in claim 1, characterized in that: The feeding mechanism (3) includes a feeding hopper (301), a support rod (302), and a baffle (303). The support rod (302) is fixedly installed on the support frame (101), and the feeding hopper (301) is fixedly installed on the support rod (302). A second rotating shaft (304) is provided on the inner end face of the feeding hopper (301), and the top of the baffle (303) is sleeved on the second rotating shaft (304) and rotatably connected to the feeding hopper (301).

6. The coal gangue separation equipment as described in claim 1, characterized in that: The output shaft of the motor (103) and the screening drum (102) are provided with a synchronous pulley (104), and a synchronous belt (105) for transmission is sleeved on the synchronous pulley (104). The lower end of the screening drum (102) is provided with a discharge plate (109) that is fixedly connected to the support frame (101).

7. The coal gangue separation equipment as described in claim 1, characterized in that: The support frame (101) is rotatably connected to a first guide wheel (106) and a second guide wheel (107) that cooperate with the screening drum (102).

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