Iron removal device for fly ash production

Abstract

The utility model relates to the technical field of fly ash production, and particularly discloses an iron removal device for fly ash production, which comprises a working box, a feed port is arranged at one end of the top of the working box, a discharge port is arranged at one end of the bottom of the working box far away from the feed port, and a plurality of support parts are uniformly arranged at the top of the working box. A conveying belt conveying mechanism is arranged on the inner side of the working box, a plurality of electromagnet assemblies are evenly arranged on the inner top of the working box, a plurality of material turning rollers are evenly and rotationally connected to the side wall of the working box, and a plurality of material combing assemblies used for adsorbing iron impurities in coal ash are evenly arranged on the side portions of the material turning rollers in a surrounding mode. The side part of the working box is also provided with a driving mechanism for driving the turning roller to rotate, so that the problem that the iron removal efficiency of the fly ash is influenced due to the fact that iron impurities in the fly ash on the conveying belt are adsorbed by an electromagnet during iron removal of the traditional fly ash and the iron impurities in the fly ash which is positioned at the bottom layer and is close to the conveying belt are difficult to be adsorbed by the electromagnet is solved.

Description

Technical Field

[0001] The present application relates to the technical field of fly ash production, and specifically discloses an iron removal device for fly ash production. Background Art

[0002] Fly ash is a waste discharged by power plants. It is the fine ash collected from the flue gas after coal combustion. In the process of extracting useful components from fly ash, the iron oxide component contained in the ash always exists as an impurity. During the extraction process, the presence of iron will affect the purity of the extract. Therefore, removing iron from fly ash is of great significance to improving the purity of useful components and improving the comprehensive utilization rate of fly ash.

[0003] Existing fly ash iron removal devices generally transport fly ash through a conveyor belt and use an electromagnet suspended above to absorb iron impurities in the fly ash. The fly ash is laid on the conveyor belt. The fly ash located at the bottom layer and close to the conveyor belt is far away from the electromagnet and is not easily absorbed by the electromagnet, making it difficult to separate from the fly ash. Therefore, it is impossible to ensure that the iron impurities in the fly ash are completely removed, and the actual iron removal effect is not good, which affects the iron removal efficiency of the fly ash. Therefore, in view of this, the inventor provides an iron removal device for fly ash production to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the problem that in the traditional fly ash removal, the iron impurities in the fly ash on the conveyor belt are adsorbed by the electromagnet during iron removal, but the iron impurities in the fly ash located at the bottom and close to the conveyor belt are difficult to be adsorbed by the electromagnet, thus affecting the iron removal efficiency of the fly ash.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides an iron removal device for fly ash production, including a working box, a feed port is provided at one end of the top of the working box, a discharge port is provided at the end of the bottom of the working box away from the feed port, and a plurality of support members are evenly provided on the top of the working box, a conveyor belt feeding mechanism for transporting fly ash from the feed port to the discharge port is provided on the inner side of the working box, a plurality of electromagnet assemblies for adsorbing iron impurities in the fly ash on the conveyor belt feeding mechanism are evenly provided on the inner top of the working box, a plurality of turning rollers located between two adjacent electromagnet assemblies are evenly rotatably connected to the side walls of the working box, a plurality of combing assemblies for adsorbing iron impurities in the fly ash are evenly surrounded on the side of the turning roller, and a driving mechanism for driving the turning roller to rotate is also provided on the side of the working box.

[0006] The principles and effects of this basic solution are:

[0007] 1. Compared with the prior art, the utility model is convenient for conveying fly ash by arranging a working box, a feed port, a discharge port and a conveyor belt feeding mechanism, and is convenient for removing iron from the fly ash on the conveyor belt feeding mechanism by arranging a plurality of electromagnet assemblies between the feed port and the discharge port, so as to perform multiple iron removal treatments on the surface of the fly ash, thereby making the iron removal efficiency higher.

[0008] 2. Compared with the prior art, the utility model provides a turning roller between two electromagnet assemblies to facilitate turning over the fly ash after surface iron removal treatment, so that the fly ash located in the lower layer or even the bottom layer on the conveyor belt feeding mechanism is turned out and exposed to the upper layer, so that the rear electromagnet assembly can remove the iron from the fly ash turned out to the upper layer, making the iron removal of the fly ash on the conveyor belt feeding mechanism more thorough and comprehensive. By providing a combing assembly on the side of the turning roller, while turning the fly ash, the fly ash contacted by the combing assembly on the turning roller is also adsorbed for iron impurities, and the iron impurities are further removed, which greatly improves the iron removal efficiency of the fly ash, and solves the problem that in the traditional fly ash removal, the iron impurities of the fly ash on the conveyor belt are adsorbed by the electromagnet, while the iron impurities in the fly ash located at the bottom layer and close to the conveyor belt are difficult to be adsorbed by the electromagnet, thus affecting the iron removal efficiency of the fly ash.

[0009] Furthermore, the conveyor belt feeding mechanism includes a motor detachably mounted on the outside of one end of the working box near the feed inlet and rotatably connected to the side of the working box, a driving belt roller rotatably connected between the inner walls on both sides of the working box near the feed inlet and coaxially connected to the output end of the motor, a driven belt roller rotatably connected between the inner walls on both sides of the working box near the discharge outlet, and a conveyor belt cooperatively connected between the driving belt roller and the driven belt roller. By setting the motor to drive the operation of the driving belt roller, the conveyor belt and the driven belt roller, the transportation of fly ash from the feed inlet to the discharge outlet is realized.

[0010] Furthermore, the driving mechanism includes a driving pulley coaxially connected to one end of the driving belt roller, a driven pulley coaxially connected to one end of the material turning roller close to the driving belt roller, and a synchronous belt meshingly connected between the driving pulley and the driven pulley, and also includes a belt transmission member arranged between the ends of two adjacent material turning rollers. By arranging the driving pulley, the driven pulley and the synchronous belt, the material turning roller is driven by the driving belt roller to rotate, and by arranging the belt transmission member between the two material turning rollers, it is convenient to transmit power from the motor to the driving pulley and the material turning roller, and at the same time, it is convenient to synchronously rotate all the material turning rollers, thereby realizing the turning of fly ash on the conveyor belt.

[0011] Furthermore, the electromagnet assembly includes a connecting column arranged at the inner top of the working box and symmetrically located between two adjacent material turning rollers, a mounting plate arranged between the bottom ends of the connecting column and located above the conveyor belt, and a plurality of electromagnet blocks uniformly and detachably mounted on the side of the mounting plate close to the conveyor belt. The distance from the bottom of the electromagnet block to the upper surface of the conveyor belt is equal to the distance from the bottom side of the material turning roller to the upper surface of the conveyor belt. The ratio of the thickness of the fly ash on the conveyor belt to the distance from the bottom of the electromagnet block to the upper surface of the conveyor belt is not less than 0.5. By setting the electromagnet block, it is convenient to adsorb and remove the iron impurities on the surface of the fly ash on the conveyor belt. By setting the connecting column and the mounting plate, it is convenient to install the electromagnet block. By limiting the distance between the electromagnet block and the fly ash, the electromagnet block has a better adsorption effect on the iron impurities in the fly ash.

[0012] Furthermore, a scraper ramp is provided at one end of the mounting plate near the feed inlet, and the scraper ramp is inclined downward from the end near the feed inlet to the end near the discharge inlet. By providing the scraper ramp, the surface of the fly ash before entering the area below the mounting plate can be scraped flat, thereby preventing the fly ash from being piled up too high and blocking in front of the mounting plate, which is not conducive to the transportation of the fly ash on the conveyor belt.

[0013] Furthermore, the combing assembly includes a plurality of combing claws evenly distributed along the axial direction of the turning roller and fixed on the side of the turning roller, and an electromagnet bar arranged on one side of the combing claw. The combing claw is an arc-shaped structure, and the electromagnet bar is arranged on the inner side of the combing claw. By arranging the combing claw and the electromagnet bar, it is not only convenient to turn over the fly ash on the conveyor belt, but also to turn over the fly ash on the bottom layer of the conveyor belt to the surface, so as to facilitate the electromagnet block to adsorb and remove iron impurities. In addition, the fly ash contacted by the combing claw can also be removed from the iron impurities during the turning process, so that the fly ash on the conveyor belt undergoes multi-layer iron removal treatment, thereby improving the fly ash iron removal efficiency.

[0014] Furthermore, the support member includes a support foot provided at the bottom of the working box and an anti-skid pad provided at the bottom of the support foot. By providing the support foot and the anti-skid pad, it is convenient to support and prevent the working box from slipping, improve the stability of the overall structure, and also facilitate the discharge of materials at the discharge port, providing sufficient space for the discharge of fly ash in the working box.

[0015] Further, the top of the working box is evenly provided with a plurality of ventilation box openings located above the material turning roller. By providing the ventilation box openings, the installation of the material turning roller is facilitated, and a ventilation channel for the internal environment of the working box can be provided at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A structural front view of an iron removal device for fly ash production proposed in an embodiment of the present application is shown;

[0018] Figure 2 A schematic structural diagram of a turning roller of an iron removal device for fly ash production proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] The figure marks in the drawings of the specification include: working box 1, feed port 2, discharge port 3, turning roller 4, combing assembly 5, active belt roller 6, driven belt roller 7, conveyor belt 8, connecting column 9, mounting plate 10, electromagnet block 11, scraper inclined plate 12, combing claw 13, electromagnet bar 14, supporting foot 15, anti-slip pad 16, ventilation box port 17.

[0021] A fly ash production iron removal device, for example Figure 1 As shown: it includes a working box 1, a feed port 2 is provided at one end of the top of the working box 1, a discharge port 3 is provided at the end of the bottom of the working box 1 away from the feed port 2, six groups of support members are evenly arranged on the top of the working box 1, a conveyor belt 8 feeding mechanism for conveying fly ash from the feed port 2 to the discharge port 3 is provided on the inner side of the working box 1, four groups of electromagnet assemblies for absorbing iron impurities in the fly ash on the conveyor belt 8 feeding mechanism are evenly arranged on the inner top of the working box 1, three turning rollers 4 located between two adjacent electromagnet assemblies are evenly rotatably connected to the side wall of the working box 1, three groups of combing assemblies 5 for absorbing iron impurities in the fly ash are evenly arranged on the side of each turning roller 4, and a driving mechanism for driving the turning roller 4 to rotate is also provided on the side of the working box 1.

[0022] Among them, Figure 1As shown, the conveyor belt 8 feeding mechanism includes a motor detachably mounted on the outer side of one end of the working box 1 near the feed port 2 and rotatably connected to the side of the working box 1, a driving belt roller 6 rotatably connected between the inner walls on both sides of the end of the working box 1 near the feed port 2 and coaxially connected to the output end of the motor, a driven belt roller 7 rotatably connected between the inner walls on both sides of the end of the working box 1 near the discharge port 3, and a conveyor belt 8 cooperatively connected between the driving belt roller 6 and the driven belt roller 7.

[0023] Among them, Figure 1 As shown, the driving mechanism includes a driving pulley coaxially connected to either end of the driving belt roller 6, a driven pulley coaxially connected to one end of the flipping roller 4 close to the driving belt roller 6, and a synchronous belt meshingly connected between the driving pulley and the driven pulley, and also includes a belt transmission member arranged between the ends of two adjacent flipping rollers 4, wherein the belt transmission member includes a first pulley coaxially connected to the end of any one of the flipping rollers 4, a second pulley coaxially connected to the end of any one of the flipping rollers 4 adjacent to the flipping roller 4 connected to the first pulley, and a transmission belt cooperatively connected between the first pulley and the second pulley.

[0024] Among them, Figure 1 As shown, each group of electromagnet assemblies includes a connecting column 9 disposed at the inner top of the working box 1 and symmetrically located between two adjacent material turning rollers 4, a mounting plate 10 disposed between the bottom ends of the connecting column 9 and located above the conveyor belt 8, and a plurality of electromagnet blocks 11 uniformly and detachably mounted on the bottom side of the mounting plate 10. The distance from the bottom of each electromagnet block 11 to the upper surface of the conveyor belt 8 is equal to the distance from the bottom side of the material turning roller 4 to the upper surface of the conveyor belt 8. The ratio of the thickness of the fly ash on the conveyor belt 8 to the distance from the bottom of the electromagnet block 11 to the upper surface of the conveyor belt 8 is not less than 0.5, wherein the ratio includes but is not limited to 0.5. A scraper inclined plate 12 is provided at the end of the mounting plate 10 close to the feed port 2, and the scraper inclined plate 12 is inclined downward from the end close to the feed port 2 to the end close to the discharge port 3.

[0025] Among them, Figure 2 As shown, the combing assembly 5 includes dozens of combing claws 13 evenly distributed along the axial direction of the turning roller 4 and fixed on the side of the turning roller 4, and an electromagnet bar 14 arranged on one side of each combing claw 13. The combing claw 13 is an arc structure, and the electromagnet bar 14 is arranged on the inner side of the combing claw 13. Figure 1 As shown, each set of support members includes a support foot 15 disposed at the bottom of the working box 1 and an anti-slip pad 16 disposed at the bottom of the support foot 15. Figure 1 As shown, three ventilation box openings 17 are evenly arranged on the top of the working box 1 and are located above the material turning roller 4.

[0026] In the specific implementation process of the utility model, the motor is turned on to make the active belt roller 6 and the turning roller 4 start to rotate, then the electromagnet block 11 and the electromagnet bar 14 are energized, and a worker pre-places a container for accommodating fly ash after iron removal under the discharge port 3, and then pours the fly ash from the feed port 2 into the working box 1, and the fly ash falls onto the conveyor belt 8 under the feed port 2. Before entering under the mounting plate 10 closest to the feed port 2, the scraper ramp 12 scrapes the fly ash on the conveyor belt 8 that is higher than the mounting plate 10 before passing through the scraper ramp 12, so that it can pass smoothly with the conveyor belt 8 and enter under the mounting plate 10. In the process of passing under the mounting plate 10, the iron impurities in the fly ash distributed on the surface are The electromagnet block 11 is adsorbed to achieve the first iron removal of the fly ash; after passing through the mounting plate 10, it passes through the first turning roller 4 in the working box 1. During this process, the combing claw 13 rotates with the rotation of the turning roller 4, and turns over the fly ash on the conveyor belt 8. In the process of turning and contacting the fly ash, the electromagnet bar 14 on the combing claw 13 adsorbs the iron impurities mixed in the fly ash it contacts, thereby achieving the second iron removal of the fly ash; similarly, the fly ash on the conveyor belt 8 is successively subjected to four iron removal treatments by the electromagnet block 11 and three iron removal treatments by the electromagnet bar 14 in the working box 1, and finally falls into the discharge port 3 on the outside of the driven belt roller 7, and falls into the container for collecting fly ash placed in advance by the workers, thereby completing the iron removal of the fly ash.

[0027] Compared with the prior art, the utility model is convenient for conveying fly ash by setting a working box 1, a feed port 2, a discharge port 3 and a conveyor belt 8 feeding mechanism, and is convenient for removing iron from the fly ash on the conveyor belt 8 feeding mechanism by setting a plurality of electromagnet assemblies between the feed port 2 and the discharge port 3, so as to facilitate multi-pass iron removal treatment on the surface of the fly ash, thereby making the iron removal efficiency higher;

[0028] Compared with the prior art, the utility model provides a turning roller 4 between two electromagnet assemblies to facilitate turning over the fly ash after surface iron removal treatment, so that the fly ash located in the lower layer or even the bottom layer on the feeding mechanism of the conveyor belt 8 is turned out and exposed to the upper layer, so that the rear electromagnet assembly can perform iron removal treatment on the fly ash turned out to the upper layer, so that the iron removal treatment of the fly ash on the feeding mechanism of the conveyor belt 8 is more thorough and comprehensive. By providing a combing assembly 5 on the side of the turning roller 4, while turning the fly ash, the fly ash contacted by the combing assembly 5 on the turning roller 4 is also adsorbed for iron impurities, and the iron impurities are further removed, which greatly improves the iron removal efficiency of the fly ash, and solves the problem that the traditional fly ash uses electromagnets to adsorb the iron impurities of the fly ash on the conveyor belt 8 during iron removal, while the iron impurities in the fly ash located at the bottom layer and close to the conveyor belt 8 are difficult to be adsorbed by the electromagnet, thereby affecting the iron removal efficiency of the fly ash.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An iron removal device for fly ash production, characterized in that: It includes a working box, wherein a feed port is provided at one end of the top of the working box, a discharge port is provided at one end of the bottom of the working box away from the feed port, a plurality of supporting members are evenly provided on the top of the working box, a conveyor belt feeding mechanism for conveying fly ash from the feed port to the discharge port is provided on the inner side of the working box, a plurality of electromagnet assemblies for absorbing iron impurities in the fly ash on the conveyor belt feeding mechanism are evenly provided on the inner top of the working box, a plurality of turning rollers located between two adjacent electromagnet assemblies are evenly rotatably connected to the side wall of the working box, a plurality of combing assemblies for absorbing iron impurities in the fly ash are evenly surrounded on the side of the turning roller, and a driving mechanism for driving the turning roller to rotate is also provided on the side of the working box.

2. The iron removal device for fly ash production according to claim 1, characterized in that: The conveyor belt feeding mechanism includes a motor that is detachably mounted on the outer side of one end of the working box near the feed port and rotatably connected to the side of the working box, a driving belt roller that is rotatably connected between the inner walls on both sides of the end of the working box near the feed port and coaxially connected to the output end of the motor, a driven belt roller that is rotatably connected between the inner walls on both sides of the end of the working box near the discharge port, and a conveyor belt that is cooperatively connected between the driving belt roller and the driven belt roller.

3. The iron removal device for fly ash production according to claim 2, characterized in that: The driving mechanism includes a driving pulley coaxially connected to one end of the driving belt roller, a driven pulley coaxially connected to one end of the material turning roller close to the driving belt roller, and a synchronous belt meshingly connected between the driving pulley and the driven pulley, and also includes a belt transmission member arranged between the ends of two adjacent material turning rollers.

4. The iron removal device for fly ash production according to claim 3, characterized in that: The electromagnet assembly includes a connecting column arranged at the inner top of the working box and symmetrically located between two adjacent material turning rollers, a mounting plate arranged between the bottom ends of the connecting columns and located above the conveyor belt, and a plurality of electromagnet blocks uniformly and detachably mounted on one side of the mounting plate close to the conveyor belt, the distance from the bottom of the electromagnet block to the upper surface of the conveyor belt is equal to the distance from the bottom side of the material turning roller to the upper surface of the conveyor belt, and the ratio of the thickness of the fly ash on the conveyor belt to the distance from the bottom of the electromagnet block to the upper surface of the conveyor belt is not less than 0.

5.

5. The iron removal device for fly ash production according to claim 4, characterized in that: The end of the mounting plate close to the feed inlet is provided with a scraper inclined plate, and the scraper inclined plate is inclined downward from the end close to the feed inlet to the end close to the discharge outlet.

6. An iron removal device for fly ash production according to any one of claims 1 to 5, characterized in that: The combing assembly comprises a plurality of combing claws evenly distributed along the axial direction of the turning roller and fixed on the side of the turning roller and an electromagnet bar arranged on one side of the combing claw. The combing claw is an arc structure and the electromagnet bar is arranged on the inner side of the combing claw.

7. The iron removal device for fly ash production according to claim 1, characterized in that: The support member comprises a support foot arranged at the bottom of the working box and an anti-skid pad arranged at the bottom of the support foot.

8. The iron removal device for fly ash production according to claim 1, characterized in that: The top of the working box is evenly provided with a plurality of ventilation box openings located above the material turning roller.

Images