Raw material impurity removal device for fly ash production

Abstract

The utility model relates to the technical field of waste recycling of thermal power plants, and particularly discloses a raw material impurity removal device for fly ash production, which comprises a crushing bin, a feeding hole is formed in the top of the crushing bin, crushing rollers are symmetrically arranged in the crushing bin, and a first driving mechanism for driving the crushing rollers to rotate relatively is arranged on the outer side wall of the crushing bin; the iron removal bin communicates with the bottom of the crushing bin, a filter plate is arranged between the iron removal bin and the crushing bin, and a plurality of electromagnetic rods are slidably connected to the side wall of the iron removal bin; the conveying bin communicates with the bottom of the iron removal bin, a conveying roller is rotationally connected into the conveying bin, a second driving mechanism for driving the conveying roller to rotate is arranged on the side wall of the outer side of the conveying bin, a plurality of filtering holes are formed in the bottom of the side, located under the iron removal bin, of the conveying bin, and a notch is formed in the bottom of the other side of the conveying bin; the fly ash screening device can achieve the purpose of removing iron powder impurities in the fly ash screening process, and can prevent scraped iron powder from falling into the conveying bin to affect the quality of subsequent finished fly ash products.

Description

Technical Field

[0001] The present application relates to the technical field of waste recycling in thermal power plants, and specifically discloses a raw material impurity removal device for fly ash production. Background Art

[0002] Fly ash is the fine ash collected from the flue gas after coal combustion. It is the main solid waste discharged by coal-fired power plants. Its main oxide components are: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2, etc. If a large amount of fly ash is not treated, it will produce dust and pollute the atmosphere; if it is discharged into the water system, it will cause river siltation, and the toxic chemicals in it will also cause harm to humans and organisms. However, fly ash can be used as a resource, such as as an admixture for concrete.

[0003] In the existing fly ash recycling, the fly ash is usually screened and filtered multiple times first, and then stirred by an electromagnetic rod after screening, and the iron powder in the fly ash is adsorbed by the magnetism of the electromagnetic rod to remove the iron powder and other impurities therein. This impurity removal method not only requires the fly ash to be screened and iron removed multiple times in sequence, resulting in the entire impurity removal process being cumbersome and complicated, but also after the electromagnetic rod adsorbs the iron powder, the iron powder is not easy to fall off the electromagnetic rod. Therefore, in view of this, the inventor provides a raw material impurity removal device for fly ash production to solve the above-mentioned problem. Utility Model Content

[0004] The utility model aims to provide an impurity removal device which can remove iron powder impurities in the fly ash screening process.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a raw material impurity removal device for fly ash production, comprising:

[0006] A crushing chamber, a feeding port is provided on the top of the crushing chamber, crushing rollers are symmetrically arranged in the crushing chamber, and a first driving mechanism for driving the crushing rollers to rotate relative to each other is provided on the outer side wall of the crushing chamber;

[0007] An iron removal bin is connected to the bottom of the crushing bin and a filter plate is provided between the crushing bin and the iron removal bin. A plurality of electromagnetic rods are slidably connected to the side wall of the iron removal bin.

[0008] The conveying bin is connected to the bottom of the iron removal bin, and a conveying roller is rotatably connected inside the conveying bin. A second driving mechanism for driving the conveying roller to rotate is provided on the outer side wall of the conveying bin. A plurality of filter holes are provided at the bottom of one side of the conveying bin directly below the iron removal bin, and a notch is provided at the bottom of the other side of the conveying bin.

[0009] Furthermore, a guide plate located above the electromagnetic rod is provided on the side wall of the iron removal bin close to the notch of the conveying bin, and the guide plate is tilted downward and faces the filter hole side of the conveying bin.

[0010] Furthermore, the side wall of the iron removal bin is provided with a sleeve which is tightly fitted with the outer wall of the electromagnetic rod and is located directly below the guide plate, and the iron removal bin is provided with a collecting trough which is located directly below the electromagnetic rod and the guide plate.

[0011] Furthermore, the distance between the end of the sleeve and the inner wall of the iron removal bin, the distance between the end of the collecting trough and the inner wall of the iron removal bin, and the distance between the end of the guide plate and the inner wall of the iron removal bin increase successively.

[0012] Furthermore, it also includes a connecting plate, one end of the electromagnetic rod passes through a side wall of the iron removal bin and is connected to the connecting plate, and a handle is provided on the connecting plate.

[0013] Furthermore, the first driving mechanism includes a first power member and driving gears driven by the first power member and coaxially connected to each crushing roller, respectively, and the driving gears are meshed with each other.

[0014] Furthermore, it also includes a first collecting bucket located below the filter hole and a second collecting bucket located below the notch.

[0015] The principle and effect of this scheme are:

[0016] Compared with the prior art, the utility model firstly crushes the fly ash by means of a crushing roller to prevent the fly ash from agglomerating and affecting the subsequent screening effect and the effect of iron removal, thereby improving the contact effect between the fly ash and the electromagnetic rod, and removes the iron powder after the preliminary filtration of the fly ash, that is, in the process of the fly ash falling, and performs filtration and screening again after the iron powder removal, thereby achieving the purpose of removing iron powder impurities during the fly ash screening process, and the setting of the guide plate, sleeve and collecting trough in the utility model can not only effectively scrape out the iron powder adsorbed on the electromagnetic rod, but also effectively prevent the fly ash from entering the collecting trough, and prevent the scraped iron powder from falling into the conveying bin and affecting the quality of the subsequent fly ash finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 A schematic diagram of a raw material impurity removal device for fly ash production proposed in an embodiment of the present application is shown;

[0019] Figure 2 A partial structural schematic diagram of a raw material impurity removal device for fly ash production proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] 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.

[0021] The figure marks in the drawings of the specification include: fixed frame 1, feed port 2, crushing roller 3, first power member 4, crushing bin 5, conveying bin 6, first collecting bucket 7, second collecting bucket 8, second power member 9, conveying roller 10, filter plate 11, guide plate 12, electromagnetic rod 13, sleeve 14, handle 15, collecting trough 16.

[0022] A raw material impurity removal device for fly ash production, for example Figure 1 and Figure 2 As shown, the structure includes a fixed frame 1, a crushing bin 5, an iron removal bin and a conveying bin 6 which are sequentially arranged on the fixed frame 1 from top to bottom, and the specific structure is as follows:

[0023] Crushing bin 5: A feed port 2 is provided on the top of the crushing bin 5, crushing rollers 3 are symmetrically provided inside the crushing bin 5, and a first driving mechanism for driving the crushing rollers 3 to rotate relative to each other is provided on the outer side wall of the crushing bin 5. In this embodiment, the first driving mechanism includes a first power member 4 and driving gears driven by the first power member 4 through a reducer and coaxially connected to each crushing roller 3, the driving gears are meshed with each other, and the first power member 4 can be a motor.

[0024] Iron removal bin: The top of the iron removal bin is connected to the bottom of the crushing bin 5 and a filter plate 11 is provided between the crushing bin. Correspondingly, the side wall of the iron removal bin is provided with a first discharge port which is flush with the upper surface of the filter plate 11, and is used to discharge particulate matter with a diameter larger than the pores of the filter plate 11. A plurality of electromagnetic rods 13 are slidably connected to the side wall of the iron removal bin. The electromagnetic rods 13 are arranged in parallel or staggered up and down. There are gaps between the electromagnetic rods 13 for allowing fly ash to pass through. A connecting plate is provided on the outer side wall of the iron removal bin, and a handle 15 is provided on the left side of the connecting plate. The left ends of the electromagnetic rods 13 all pass through one side wall of the iron removal bin and are connected to the right side of the connecting plate. The left inner wall of the iron removal bin is inclined downward and provided with a A guide plate 12 is provided, the guide plate 12 faces the lower right corner of the iron removal bin, the side wall of the iron removal bin is provided with a sleeve which is tightly fitted with the outer wall of the electromagnetic rod 13 and is located directly below the guide plate 12, the iron removal bin is provided with a collecting trough 16 which is located directly below the electromagnetic rod 13 and the guide plate 12, and the side wall of the iron removal bin is provided with an iron removal port connected to the collecting trough 16. In this embodiment, the distance between the right end of the sleeve 14 and the left inner wall of the iron removal bin, the distance between the right end of the collecting trough 16 and the left inner wall of the iron removal bin, and the distance between the right end of the guide plate 12 and the left inner wall of the iron removal bin are increased successively to prevent fly ash from entering the collecting trough 16 and to prevent the scraped iron powder from falling into the conveying bin 6.

[0025] Conveying bin 6: The top of the conveying bin 6 is connected to the bottom of the iron removal bin, and a conveying roller 10 is rotatably connected inside the conveying bin 6. A second driving mechanism for driving the conveying roller 10 to rotate is provided on the outer side wall of the conveying bin 6. In the present embodiment, the second driving mechanism can also be a motor and is coaxially connected to the conveying roller 10. A plurality of filter holes are provided on the bottom of the conveying bin 6 located directly below the iron removal bin, and the other side of the conveying bin 6 extends out of the left side wall of the iron removal bin and is provided with a notch at its bottom. A first collecting bucket 7 is provided below the filter hole, and a second collecting bucket 8 is provided below the notch.

[0026] During the implementation of this embodiment, fly ash enters the crushing bin 5 from the feed port 2 at the top of the crushing bin 5, and the first power member 4 drives the two driving gears to rotate through the reducer. The two driving gears mesh with each other, thereby driving the two crushing rollers 3 to rotate relative to each other, thereby crushing the fly ash, so that the damp and agglomerated fly ash is crushed into fine particles. The crushed fly ash falls downward and is initially filtered through the filter plate 11. The filtered fly ash falls downward and contacts the electromagnetic rod 13. The electromagnetic rod 13 absorbs the iron powder in the fly ash, thereby achieving the effect of removing iron from the fly ash. The fly ash after iron removal enters the conveying bin 6 and remains at the bottom of the conveying bin 6. The second power member 4 drives the two driving gears to rotate relative to each other through the reducer, thereby crushing the fly ash, so that the damp and agglomerated fly ash is crushed into fine particles. The fly ash after crushing falls downward and is initially filtered through the filter plate 11. The fly ash after filtering falls downward and contacts the electromagnetic rod 13. The electromagnetic rod 13 absorbs the iron powder in the fly ash, thereby achieving the effect of removing iron from the fly ash. The fly ash after iron removal enters the conveying bin 6 and remains at the bottom of the conveying bin 6. Component 9 drives the conveying roller 10 to rotate, which has a stirring effect on the fly ash, so that the fine fly ash falls into the first collecting bucket 7 through the filter hole, and the large particles of fly ash are moved to the gap under the drive of the conveying roller 10 and fall from the gap to the second collecting bucket 8. After a single fly ash processing is completed, the connecting plate is pulled by the handle 15, thereby pulling each electromagnetic rod 13, so that the electromagnetic rod 13 moves along the wall of the casing 14, and the coal powder on the surface of the electromagnetic rod 13 falls into the collecting bucket. When the right end of the electromagnetic rod 13 is located in the casing 14, the electromagnetic rod 13 is powered off, and then the electromagnetic rod 13 is extended into the iron removal bin in the reverse direction, and the electromagnetic rod 13 is powered on again to remove impurities from the next batch of fly ash.

[0027] Compared with the prior art, the utility model first crushes the fly ash by means of the crushing roller 3 to prevent the fly ash from agglomerating and affecting the subsequent screening effect and the effect of iron removal, thereby improving the contact effect between the fly ash and the electromagnetic rod 13, and removes iron powder after the preliminary filtration of the fly ash, i.e., in the process of the fly ash falling, and performs filtration and screening again after the iron powder removal, thereby achieving the purpose of removing iron powder impurities during the fly ash screening process, and the setting of the guide plate, sleeve 14 and collecting trough 16 in the utility model can not only effectively scrape out the iron powder adsorbed on the electromagnetic rod 13, but also effectively prevent the fly ash from entering the collecting trough 16, and prevent the scraped iron powder from falling into the conveying bin 6 to affect the quality of the subsequent fly ash product.

[0028] 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. A raw material impurity removal device for fly ash production, characterized in that: include: A crushing chamber, a feeding port is provided on the top of the crushing chamber, crushing rollers are symmetrically arranged in the crushing chamber, and a first driving mechanism for driving the crushing rollers to rotate relative to each other is provided on the outer side wall of the crushing chamber; An iron removal bin is connected to the bottom of the crushing bin and a filter plate is provided between the crushing bin and the iron removal bin. A plurality of electromagnetic rods are slidably connected to the side wall of the iron removal bin. The conveying bin is connected to the bottom of the iron removal bin, and a conveying roller is rotatably connected inside the conveying bin. A second driving mechanism for driving the conveying roller to rotate is provided on the outer side wall of the conveying bin. A plurality of filter holes are provided at the bottom of one side of the conveying bin directly below the iron removal bin, and a notch is provided at the bottom of the other side of the conveying bin.

2. The raw material impurity removal device for fly ash production according to claim 1, characterized in that: A guide plate located above the electromagnetic rod is provided on the side wall of the iron removal bin close to the notch of the conveying bin, and the guide plate is inclined downward and faces the filter hole side of the conveying bin.

3. A raw material impurity removal device for fly ash production according to claim 2, characterized in that: The side wall of the iron removal bin is sleeved with a sleeve which is tightly fitted with the outer wall of the electromagnetic rod and is located directly below the guide plate. The iron removal bin is provided with a collecting tank which is located directly below the electromagnetic rod and the guide plate.

4. A raw material impurity removal device for fly ash production according to claim 3, characterized in that: The distance between the end of the sleeve and the inner wall of the iron removal bin, the distance between the end of the collecting trough and the inner wall of the iron removal bin, and the distance between the end of the guide plate and the inner wall of the iron removal bin increase successively.

5. The raw material impurity removal device for fly ash production according to claim 1, characterized in that: It also includes a connecting plate, one end of the electromagnetic rod passes through a side wall of the iron removal bin and is connected to the connecting plate, and a handle is provided on the connecting plate.

6. The raw material impurity removal device for fly ash production according to claim 1, characterized in that: The first driving mechanism comprises a first power member and driving gears driven by the first power member and coaxially connected to each crushing roller, respectively, and the driving gears are meshed with each other.

7. The raw material impurity removal device for fly ash production according to claim 1, characterized in that: It also includes a first collecting bucket located below the filter hole and a second collecting bucket located below the notch.

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