Heavy medium powder recovery device for coal preparation

Abstract

The utility model discloses a heavy medium powder recycling device for coal selection, including the magnetic separator body, be provided with the transverse board at the magnetic selection output of magnetic separator body, both ends of transverse board all are installed with the support, the bottom of support with the fixed connection of the machine groove of magnetic separator body, the upper section of transverse board face is inclined and is bent upwards, the lower section of transverse board face is inclined and is bent downwards, install the shower pipe and the scraper on the inner wall of upper section and lower section face respectively, even install a plurality of nozzles on the shower pipe, be provided with elastic compression subassembly on the scraper, the utility model has the advantages of: under the double effect of scraper and shower pipe, can with the heavy medium powder that the magnetic separator body selected is separated from the high -efficient drum, avoid the phenomenon that drag material occurs, thereby improve the recovery efficiency of heavy medium powder, the time of the continuous operation of magnetic selection machine equipment is shorter, and energy consumption reduces, and the heavy medium powder recovery cost investment reduces.

Description

Technical fields:

[0001] This utility model belongs to the field of heavy media powder recycling, and particularly relates to a heavy media powder recycling device for coal preparation. Background technology:

[0002] In heavy media coal preparation, heavy media powder mixed with water forms a heavy suspension, which is the separating medium. Coal and impurities such as gangue of different densities will exhibit different floating and sinking behaviors in this medium. Clean coal with a density lower than that of the heavy suspension will float, while impurities such as gangue with a density higher than that will sink. This achieves effective separation of coal and impurities, improving the quality and recovery rate of clean coal.

[0003] Heavy media powder is used in large quantities in coal preparation processes, therefore its recovery value is also high, which can reduce the cost of coal preparation. In current technology, magnetic separators are typically used to separate heavy media powder. Magnetic separators use magnets inside the drum to attract heavy media powder contained in the flowing tailings water in the trough. Once the heavy media powder is removed from the magnetic field, it falls from the drum into a chute on the trough and flows into the feed trough, completing the initial recovery process. However, during this process, due to the long-term operation of the magnetic separator, magnetic field differences and drum wear occur, causing some heavy media powder to fail to effectively separate from the drum, resulting in material dragging. This leads to a significant decrease in the recovery efficiency of heavy media powder, longer continuous operation time of the magnetic separator, higher energy consumption, and higher investment costs for heavy media powder recovery. Summary of the Invention:

[0004] The purpose of this invention is to provide a heavy media powder recovery device for coal preparation, and to overcome the shortcomings of the prior art, effectively solving the existing problem of low heavy media powder recovery efficiency.

[0005] The present invention relates to a heavy media powder recycling device for coal preparation, comprising a magnetic separator body. A horizontal plate is provided at the magnetic separation output end of the magnetic separator body. Support rods are installed at both ends of the horizontal plate, and the bottom ends of the support rods are fixedly connected to the trough of the magnetic separator body. The upper section of the horizontal plate is inclined upward and bent downward. Spray pipes and scrapers are respectively installed on the inner walls of the upper and lower sections. A plurality of nozzles are evenly installed on the spray pipes, and an elastic pressing component is provided on the scraper.

[0006] Furthermore, the elastic clamping assembly includes a pair of round rods installed at the outer end of the scraper, a through hole is provided on the lower section surface, the round rods slide within the through hole, a spring is fitted on the round rods, the inner end of the spring is fixedly connected to the inner wall of the lower section surface, and an anti-detachment cap is installed at the outer end of the round rods.

[0007] Furthermore, a concave connector is installed at the inner end of the round rod, and the outer end of the scraper is inserted into the groove of the concave connector.

[0008] Furthermore, the outer end of the scraper is fixedly connected to the concave joint by bolts.

[0009] Furthermore, a proximity sensor is installed on the concave connector, and the proximity sensor is connected to the PLC controller, which is in turn connected to an alarm.

[0010] Furthermore, the nozzle is duckbill shaped.

[0011] Furthermore, the inner end of the scraper is blade-shaped.

[0012] Furthermore, an observation window is provided on the middle section of the horizontal plate.

[0013] The beneficial effects of this utility model are as follows: Under the dual action of the scraper and the spray pipe, the heavy medium powder selected by the magnetic separator can be efficiently separated from the drum, avoiding the phenomenon of dragging materials, thereby improving the recovery efficiency of heavy medium powder, shortening the continuous operation time of the magnetic separator, reducing energy consumption, and reducing the cost of heavy medium powder recovery. Attached image description:

[0014] Figure 1 This is an overall structural diagram of the present invention;

[0015] Figure 2 This is the right view of the present invention;

[0016] Figure 3 This is a top view of the present invention;

[0017] In the figure, 1 is the magnetic separator body, 101 is the machine trough, 102 is the chute, 103 is the material trough, 2 is the horizontal plate, 201 is the upper section, 202 is the lower section, 203 is the middle section, 3 is the support rod, 4 is the spray pipe, 401 is the nozzle, 5 is the scraper, 501 is the round rod, 502 is the spring, 503 is the anti-detachment cap, 504 is the concave joint, 6 is the proximity sensor, and 7 is the observation window. Detailed implementation method:

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings:

[0019] like Figures 1 to 3The heavy media powder recovery device for coal preparation shown includes a magnetic separator body 1. A horizontal plate 2 is provided at the magnetic separation output end of the magnetic separator body 1. Support rods 3 are installed at both ends of the horizontal plate 2. The bottom ends of the support rods 3 are fixedly connected to the trough 101 of the magnetic separator body 1. The upper section 201 of the horizontal plate 2 is bent upwards at an incline, and the lower section 202 of the horizontal plate 2 is bent downwards at an incline. Spray pipes 4 and scrapers 5 are respectively installed on the inner walls of the upper section 201 and the lower section 202. A plurality of nozzles 401 are evenly installed on the spray pipes 4. An elastic clamping assembly is provided on the scraper 5. The elastic clamping assembly includes a pair of round rods 501 installed on the outer end of the scraper 5. A through hole is provided on the lower section surface 202, and the round rod 501 slides in the through hole. A spring 502 is fitted on the round rod 501, and the inner end of the spring 502 is fixedly connected to the inner wall of the lower section surface 202. An anti-detachment cap 503 is installed on the outer end of the round rod 501. A concave connector 504 is installed on the inner end of the round rod 501, and the outer end of the scraper 5 is inserted into the groove of the concave connector 504. The outer end of the scraper 5 and the concave connector 504 are fixedly connected by bolts. A proximity sensor 6 is installed on the concave connector 504, and the proximity sensor 6 is connected to the PLC controller. An alarm is connected to the PLC controller.

[0020] Specifically, through the combined action of the scraper 5 and the spray pipe 4, the heavy medium powder selected by the magnetic separator 1 can be efficiently removed from the drum.

[0021] In actual use, the tailings water produced by coal preparation enters the trough 101 through the feed end of the magnetic separator 1 via a pipeline. Under the action of the magnetic elements set inside the drum of the magnetic separator 1, the heavy media powder contained in the tailings water is adsorbed onto the outer circumference of the drum of the magnetic separator 1. As the drum rotates continuously, the heavy media powder is carried out of the trough 101. When the heavy media powder leaves the magnetic field, it falls naturally from the drum onto the chute 102 located next to it on one side, and finally slides into the material trough 103 for temporary storage. During this process, the inner end of the scraper 5 slides and fits against the outer circumference of the drum of the magnetic separator body 1, so that it can scrape off the heavy media powder material accidentally dragged on the drum, so that this part of the heavy media powder can fall back onto the chute 102; after the external water source is introduced into the spray pipe 4, it is evenly sprayed onto the circumference of the drum of the magnetic separator body 1 through several nozzles 401, so that the spray water can completely wash away the heavy media powder remaining on the circumference of the drum, and the washed-off heavy media powder falls onto the scraper 5 and flows into the chute 102.

[0022] In the above process, the upper section 201 of the horizontal plate 2 is inclined and bent upward, which reduces the angle between the nozzle 401 and the drum of the magnetic separator 1. At the same time, it brings the nozzle 401 closer to the circumference of the drum, so that the nozzle 401 can spray water evenly onto the drum with a lower water pressure, thereby reducing water splashing and preventing spray water from falling onto the working ground and polluting the environment. The lower section 202 of the horizontal plate 2 is inclined and bent downward, so that the scraping angle of the scraper 5 can be tilted towards the drum of the magnetic separator 1 and in the same direction of rotation as it. This method can not only achieve efficient scraping of heavy media powder, but also facilitate the flow of heavy media powder washed off by the nozzle 401 onto the scraper 5 to the chute 102. It can also further reduce the scraping resistance of the scraper 5 on the drum of the magnetic separator 1.

[0023] When the inner end of the scraper 5 wears down, the spring 502 causes the round rod 501 to slide in the through hole and push the scraper 5 to move, so that its inner end can always elastically contact the circumferential surface of the drum of the magnetic separator body 1, thereby further improving the continuous and efficient scraping effect of the scraper 5. When the scraper 5 is severely worn and needs to be replaced, the fastening bolts can be removed and the scraper 5 can be pulled out from the groove of the concave joint 504, thereby completing the quick disassembly and replacement of the scraper 5 and improving the maintenance efficiency of the device. During the continuous scraping wear of the scraper 5, its size will also decrease, causing the proximity sensor 6 installed on the concave joint 504 to gradually approach the drum of the magnetic separator body 1 and eventually trigger an alarm signal. The PLC controller controls the alarm to send an alarm signal to remind the staff to replace the scraper 5, thereby further improving the recovery efficiency of heavy medium powder.

[0024] like Figures 1 to 3 As shown, in the heavy medium powder recovery device for coal preparation, the nozzle 401 is duckbill-shaped; the inner end of the scraper 5 is blade-shaped; and an observation window 7 is provided on the middle section 203 of the horizontal plate 2.

[0025] Specifically, the duckbill-shaped nozzle 401 can improve the spraying and rinsing effect on the circumference of the drum of the magnetic separator body 1.

[0026] During the above process, the duckbill-shaped nozzle 401 sprays water mist in an umbrella shape, covering the circumferential surface of the drum of the magnetic separator body 1, thereby improving the spraying and rinsing effect; the inner end of the scraper 5 is blade-shaped, which not only improves its scraping effect, but also minimizes the contact area between the inner end of the scraper 5 and the circumferential surface of the magnetic separator body 1, thereby reducing the wear on the drum; the operator can observe the operating status of the equipment at any time through the observation window 7.

[0027] 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, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heavy media powder recovery device for coal preparation, comprising a magnetic separator body (1), characterized in that: A horizontal plate (2) is provided at the magnetic separation output end of the magnetic separator body (1). Support rods (3) are installed at both ends of the horizontal plate (2). The bottom end of the support rods (3) is fixedly connected to the machine groove (101) of the magnetic separator body (1). The upper section (201) of the horizontal plate (2) is bent upward at an inclination, and the lower section (202) of the horizontal plate (2) is bent downward at an inclination. Spray pipes (4) and scrapers (5) are respectively installed on the inner walls of the upper section (201) and the lower section (202). Several nozzles (401) are evenly installed on the spray pipes (4), and an elastic pressing component is provided on the scrapers (5).

2. The heavy medium powder recovery device for coal preparation according to claim 1, characterized in that: The elastic clamping assembly includes a pair of round rods (501) installed on the outer end of the scraper (5), a through hole is provided on the lower section surface (202), the round rods (501) slide in the through hole, a spring (502) is fitted on the round rods (501), the inner end of the spring (502) is fixedly connected to the inner wall of the lower section surface (202), and an anti-detachment cap (503) is installed on the outer end of the round rods (501).

3. The heavy medium powder recovery device for coal preparation according to claim 2, characterized in that: A concave connector (504) is installed at the inner end of the round rod (501), and the outer end of the scraper (5) is inserted into the groove of the concave connector (504).

4. The heavy media powder recovery device for coal preparation according to claim 3, characterized in that: The outer end of the scraper (5) is fixedly connected to the concave joint (504) by bolts.

5. The heavy media powder recovery device for coal preparation according to claim 3, characterized in that: A proximity sensor (6) is installed on the concave connector (504), and the proximity sensor (6) is connected to the PLC controller, which is connected to an alarm.

6. The heavy media powder recovery device for coal preparation according to claim 1, characterized in that: The nozzle (401) is duckbill shaped.

7. The heavy media powder recovery device for coal preparation according to claim 1, characterized in that: The inner end of the scraper (5) is blade-shaped.

8. The heavy media powder recovery device for coal preparation according to claim 1, characterized in that: An observation window (7) is provided on the middle section (203) of the horizontal plate (2).

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