Screening mechanism for coal mine

Abstract

The utility model discloses a screening mechanism for a coal mine. The screening mechanism comprises a screening protection frame, a screening knocking device and an anti-blocking device. A discharging slide is mounted on the screening protection frame; the screening knocking device is installed in the screening protection frame and comprises a knocking shaft rod, a knocking protruding block is fixed to the knocking shaft rod, a screening plate body is arranged above the knocking protruding block, and a plurality of evenly-distributed screening holes are formed in the screening plate body; the anti-blocking device is arranged above the knocking protruding block and comprises a supporting shaft rod, a downward-pressing pushing block is fixed to the supporting shaft rod, a supporting downward-pressing plate is arranged below the supporting shaft rod, and a plurality of supporting springs are fixedly connected between the supporting downward-pressing plate and the screening protection frame. Through the arrangement of corresponding mechanisms, the screening effect of a coal mine is improved, the coal mine is not prone to being vibrated away, the screening efficiency of the coal mine is not prone to being reduced, and therefore the mining efficiency of the coal mine is not prone to being reduced, and unnecessary troubles are reduced for a user.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine screen technology, specifically relating to a screening mechanism for coal mines. Background Technology

[0002] In the mining process, ore needs to undergo a series of operations such as crushing, pulverizing, and screening. After the ore is pulverized into powder, it needs to be finely screened according to different particle sizes and stored in grades based on its quality. However, during ore screening, the screen plate often becomes clogged with ore, reducing screening efficiency and thus affecting mining efficiency, causing unnecessary losses for users.

[0003] Although existing technologies also use electric motors to vibrate the screen plates, slight vibrations are insufficient to dislodge stuck ore particles, while larger vibrations can cause small ore particles to fly away, thus affecting the screening effect and mining efficiency, and causing unnecessary trouble for users.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a screening mechanism for coal mines.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a screening mechanism for coal mines, which can solve the problem of poor screening effect of existing coal mine screen plates.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a screening mechanism for coal mines, including: a screening protection frame, a screening impact device, and an anti-blocking device;

[0008] A material discharge slide is installed on the screening protection frame;

[0009] The screening and striking device is installed inside the screening protection frame. The screening and striking device includes a striking shaft, a striking protrusion is fixed on the striking shaft, a screen plate body is provided above the striking protrusion, and a plurality of evenly distributed screening holes are drilled on the screen plate body.

[0010] The anti-clogging device is located above the striking protrusion. The anti-clogging device includes a support shaft, a pressing block is fixed on the support shaft, a supporting lower pressure plate is provided below the support shaft, a plurality of supporting springs are fixedly connected between the supporting lower pressure plate and the screening protection frame, and an insert rod corresponding to the screening hole is fixed below the supporting lower pressure plate.

[0011] In one or more embodiments of this utility model, the screening protection frame is equipped with multiple support columns to support the screening protection frame, making it less prone to shaking or tilting, thereby ensuring the stability of screening coal ore. In addition, the multiple insert rods and multiple screening holes can correspond one-to-one, thereby pushing out the stones stuck in the screening holes.

[0012] In one or more embodiments of this utility model, a feeding guide frame is fixed on the inner wall of the screening protection frame. The feeding guide frame is located below the striking protrusion to facilitate the collection of screened coal ore, making it convenient for workers to clean up and improving the screening efficiency of coal ore.

[0013] In one or more embodiments of this utility model, a first support bearing is fixedly connected between both ends of the striking shaft and the inner wall of the screening protection frame to support and fix the striking shaft, so that the striking shaft is not prone to shaking or tilting, thereby stably driving the striking protrusion to rotate and realize the function of continuously striking the screen plate body.

[0014] In one or more embodiments of this utility model, a plurality of lifting buffer frames are fixed on the inner wall of the screening protection frame, and a plurality of corners of the screen plate body are respectively inserted into the plurality of lifting buffer frames, so that the lifting buffer frames are not easily tilted and their stability is guaranteed. A limit column is fixed in the lifting buffer frame, and the limit column is set through the screen plate body.

[0015] A buffer spring is fixedly connected between the screen plate body and the lifting buffer frame to assist in pushing the screen plate body downward, so that the screen plate body can vibrate up and down continuously, thereby screening the coal ore.

[0016] In one or more embodiments of this utility model, a plurality of upper and lower blocking arc plates are fixed on the screen plate body. The upper and lower blocking arc plates are both attached to one side of the lifting buffer frame to protect the limiting column and the buffer spring, so that the coal ore is not easy to contact the limiting column and the buffer spring, and thus is not easy to affect the up and down vibration of the screen plate body.

[0017] In one or more embodiments of this utility model, a second support bearing is fixedly connected between both ends of the support shaft and the screening protection frame to fix and support the support shaft, so that the support shaft is not easy to shake or tilt, thereby stably driving the lower push block to rotate.

[0018] In one or more embodiments of this utility model, a drive motor is fixedly connected to one end of the support shaft to drive the support shaft to rotate and provide power for vibrating screening of coal ore. A support base is provided below the drive motor and is fixed to the outer wall of the screening protection frame to support and fix the drive motor.

[0019] In one or more embodiments of this utility model, both ends of the striking shaft are equipped with striking gears, and both ends of the support shaft are equipped with transmission gears to facilitate transmission.

[0020] In one or more embodiments of this utility model, both the pair of transmission gears and the pair of striking gears mesh with each other.

[0021] Compared with existing technologies, this utility model improves the screening effect of coal mines through the setting of corresponding mechanisms, and is less likely to cause coal to fly away and reduce the screening efficiency of coal mines, thereby reducing the mining efficiency of coal ore and reducing unnecessary trouble for users. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a perspective view of a coal mine screening mechanism according to one embodiment of the present invention;

[0024] Figure 2 This is a partial cross-sectional view of a coal mine screening mechanism according to one embodiment of the present invention;

[0025] Figure 3 for Figure 2 The structural diagram shown at point A in the middle;

[0026] Figure 4 for Figure 2 The structural diagram shown at point B in the middle;

[0027] Figure 5 This is a schematic diagram of the structure of the sieve plate body in one embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the lifting buffer frame in one embodiment of the present invention;

[0029] Figure 7 This is a diagram showing the meshing of the transmission gear and the striking gear in one embodiment of the present invention.

[0030] Explanation of key figure labels:

[0031] 1-Screening protection frame, 101-Discharge slide, 102-Support column leg, 2-Screening striking device, 201-Striking shaft, 202-Striking protrusion, 203-Screen plate body, 204-Screening hole, 205-Discharge guide frame, 206-First support bearing, 207-Lifting buffer frame, 208-Limiting column, 209-Buffer spring, 210-Upper blocking arc plate, 211-Lower blocking arc plate, 3-Anti-blocking device, 301-Support shaft, 302-Lower pressing block, 303-Supporting lower pressure plate, 304-Insertion rod, 305-Supporting spring, 306-Second support bearing, 307-Transmission gear, 308-Striking gear, 309-Drive motor, 310-Supporting base. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0033] like Figures 1 to 7 As shown, a coal mine screening mechanism in one embodiment of the present invention includes: a screening protection frame 1, a screening striking device 2, and an anti-clogging device 3.

[0034] like Figure 1 As shown, a feeding slide 101 is installed on the screening protection frame 1 to facilitate the entry of coal ore. An opening and closing door is provided on one side of the screening protection frame 1 to remove any remaining stones after screening by the screen plate body 203, facilitating operation. Multiple support legs 102 are installed on the screening protection frame 1 to support it, preventing it from shaking or tilting, thus ensuring the stability of the coal ore screening. Furthermore, the multiple insertion rods 304 and multiple screening holes 204 are aligned one-to-one, allowing stones stuck in the screening holes 204 to be ejected.

[0035] like Figures 1 to 3As shown, the screening and striking device 2 is installed inside the screening protection frame 1. The screening and striking device 2 includes a striking shaft 201, which supports the striking protrusions 202 and drives the striking protrusions 202 to rotate. The striking protrusions 202 are fixed on the striking shaft 201 for striking the screen plate body 203, thereby providing conditions for rapid screening of coal ore. The screen plate body 203 is arranged above the striking protrusions 202. The screen plate body 203 has multiple evenly distributed screening holes 204 for screening coal ore.

[0036] The inner wall of the screening protection frame 1 is fixed with a feeding guide frame 205, which is located below the striking protrusion 202. This facilitates the collection of the screened coal ore, making it easier for staff to clean it up and improving the screening efficiency of the coal ore.

[0037] In addition, first support bearings 206 are fixedly connected between both ends of the striking shaft 201 and the inner wall of the screening protection frame 1 to support and fix the striking shaft 201, so that the striking shaft 201 is not prone to shaking or tilting, and can stably drive the striking protrusion 202 to rotate, so as to continuously strike the screen plate body 203.

[0038] like Figures 5 to 6 As shown, multiple lifting buffer frames 207 are fixed on the inner wall of the screening protection frame 1. Multiple corners of the screen plate body 203 are inserted into the multiple lifting buffer frames 207, making the lifting buffer frames 207 less prone to tilting and ensuring their stability. Limiting rods 208 are fixed inside the lifting buffer frames 207, and the limiting rods 208 penetrate the screen plate body 203. A buffer spring 209 is fixedly connected between the screen plate body 203 and the lifting buffer frames 207, used to assist in pushing the screen plate body 203 downwards, allowing the screen plate body 203 to vibrate continuously up and down, thereby screening the coal ore.

[0039] like Figure 5 As shown, multiple upper blocking arc plates 210 and lower blocking arc plates 211 are fixed on the screen plate body 203. The upper blocking arc plates 210 and lower blocking arc plates 211 are attached to one side of the lifting buffer frame 207 to protect the limiting column rod 208 and the buffer spring 209, so that the coal ore is not easy to contact the limiting column rod 208 and the buffer spring 209, and thus is not easy to affect the up and down vibration of the screen plate body 203.

[0040] like Figures 1 to 7As shown, the anti-blocking device 3 is located above the striking protrusion 202. The anti-blocking device 3 includes a support shaft 301, which supports the pressing push block 302 and drives the pressing push block 302 to rotate. It also drives a pair of transmission gears 307 to rotate. The pressing push block 302 is fixed on the support shaft 301, which pushes the supporting pressing plate 303, thereby enabling the supporting pressing plate 303 to drive multiple insert rods 304 to move downward.

[0041] Specifically, a lower support plate 303 is provided below the support shaft 301 to support multiple insert rods 304 and drive the multiple insert rods 304 to move up and down. Multiple support springs 305 are fixedly connected between the lower support plate 303 and the screening protection frame 1 to support the lower support plate 303 and pull the lower support plate 303 downward. Insert rods 304 corresponding one-to-one with the screening holes 204 are fixed below the lower support plate 303 to be inserted downward into the screening holes 204, thereby removing stones stuck in the screening holes 204 and reducing the probability of blockage.

[0042] The two ends of the support shaft 301 are fixedly connected to the screening protection frame 1 with a second support bearing 306, which is used to fix and support the support shaft 301, so that the support shaft 301 is not easy to shake or tilt, thereby stably driving the lower push block 302 to rotate.

[0043] like Figures 1 to 7 As shown, a drive motor 309 is fixedly connected to one end of the support shaft 301 to drive the support shaft 301 to rotate, providing power for the vibrating screen of coal ore. A support base 310 is located below the drive motor 309 and is fixed to the outer wall of the screening protection frame 1 to support and fix the drive motor 309. Both ends of the striking shaft 201 are equipped with striking gears 308, and both ends of the support shaft 301 are equipped with transmission gears 307. The pair of transmission gears 307 and the pair of striking gears 308 mesh with each other for convenient transmission.

[0044] In actual use, the staff pours the coal ore into the feeding slide 101. The coal ore will fall onto the screen plate body 203 and be screened through the screening holes 204. The drive motor 309 will start and drive the support shaft 301 to rotate. Through the meshing of the transmission gear 307 and the striking gear 308, the striking shaft 201 will also drive the striking protrusion 202 to rotate, thereby continuously striking the screen plate body 203 to achieve the effect of vibration screening. Finally, the screened coal ore will be discharged through the feeding guide frame 205.

[0045] When the support shaft 301 rotates, it also drives the downward push block 302 to rotate. During the rotation of the downward push block 302, it pushes the support lower pressure plate 303 to drive multiple insert rods 304 to move downwards gradually, so that the insert rods 304 are inserted into the screening hole 204, so that the stones stuck in the screening hole 204 can be removed, thus preventing blockage. Moreover, the speed ratio of the downward push block 302 and the striking protrusion 202 can be controlled by the gear ratio of the transmission gear 307 and the striking gear 308, thereby improving the screening efficiency of coal ore.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screening mechanism for coal mines, characterized in that, include: A screening protection frame, on which a material discharge slide is installed; A screening and striking device is installed inside the screening protection frame. The screening and striking device includes a striking shaft, a striking protrusion is fixed on the striking shaft, a screen plate body is provided above the striking protrusion, and a plurality of evenly distributed screening holes are drilled on the screen plate body. An anti-clogging device is located above the striking protrusion. The anti-clogging device includes a support shaft, a pressing block is fixed on the support shaft, a supporting lower pressure plate is provided below the support shaft, a plurality of supporting springs are fixedly connected between the supporting lower pressure plate and the screening protection frame, and an insert rod corresponding to each screening hole is fixed below the supporting lower pressure plate.

2. The screening mechanism for coal mines according to claim 1, characterized in that, The screening protection frame is equipped with multiple support columns.

3. A screening mechanism for coal mines according to claim 1, characterized in that, A feeding guide frame is fixed on the inner wall of the screening protection frame, and the feeding guide frame is located below the striking protrusion.

4. A screening mechanism for coal mines according to claim 1, characterized in that, Both ends of the striking shaft are fixedly connected to the inner wall of the screening protection frame with first support bearings.

5. A screening mechanism for coal mines according to claim 1, characterized in that, Multiple lifting buffer frames are also fixed on the inner wall of the screening protection frame. Multiple corners of the screen plate body are respectively inserted into the multiple lifting buffer frames. Limiting rods are fixed in the lifting buffer frames. The limiting rods pass through the screen plate body. Buffer springs are fixedly connected between the screen plate body and the lifting buffer frames.

6. A screening mechanism for coal mines according to claim 5, characterized in that, Multiple upper and lower blocking arc plates are fixed on the sieve plate body, and both the upper and lower blocking arc plates are attached to one side of the lifting buffer frame.

7. A screening mechanism for coal mines according to claim 1, characterized in that, The two ends of the support shaft are fixedly connected to the screening protection frame with second support bearings.

8. A screening mechanism for coal mines according to claim 1, characterized in that, One end of the support shaft is fixedly connected to a drive motor, and a support base is provided below the drive motor. The support base is fixed to the outer wall of the screening protection frame.

9. A screening mechanism for coal mines according to claim 1, characterized in that, Both ends of the striking shaft are equipped with striking gears, and both ends of the support shaft are equipped with transmission gears.

10. A screening mechanism for coal mines according to claim 9, characterized in that, Both the pair of transmission gears and the pair of striking gears mesh with each other.

Images