Fly ash harmless treatment and resource recycling device

Abstract

This utility model relates to a device for the harmless treatment and resource recycling of fly ash, comprising a crushing chamber, a mixing chamber, a conveying mechanism, and a molding die assembly. The key technical features are: the crushing chamber is located at the top of the mixing chamber and its bottom surface is a sieve plate; the side wall of the mixing chamber is equipped with a harmless treatment solution input pipe and a main raw material inlet; the conveying mechanism includes a horizontal screw conveyor located below the discharge port of the mixing chamber and a horizontal conveyor belt located below the discharge port of the horizontal screw conveyor; the molding die assembly consists of molding dies sequentially placed on the upper surface of the horizontal conveyor belt; a long through groove is provided on the lower part of one side wall of each molding die; a heating element is built into the bottom of the molding die, with the electrical terminal of the heating element protruding from the bottom surface of the long through groove and connected to a retractable joint; a positioning frame is provided on the side of the horizontal conveyor belt, and a conductive track is provided on the positioning frame; a heat-conducting layer is provided on the inner bottom surface of the molding die, and a heat-insulating layer is provided on the outer bottom surface. This device reduces environmental pollution on the one hand and accelerates resource utilization on the other, meeting the needs of modern production.

Description

Technical Field

[0001] This utility model relates to the technical field of fly ash treatment equipment, specifically to a device for harmless treatment and resource recycling of fly ash. Background Technology

[0002] The fly ash produced by municipal solid waste incineration contains a large amount of harmful substances. It is generally stabilized before being landfilled, which reduces environmental pollution to a certain extent. However, this results in the waste of the substances in the fly ash. How to treat fly ash in a harmless manner and realize its resource utilization is the main research topic at present. Utility Model Content

[0003] The purpose of this invention is to provide a reasonably structured and reliable fly ash harmless treatment and resource recycling device, which reduces environmental pollution on the one hand and accelerates resource utilization on the other, meeting the needs of modern production.

[0004] The technical solution of this utility model is:

[0005] A fly ash harmless treatment and resource recycling device includes a crushing chamber, a mixing chamber, a conveying mechanism, and a forming mold assembly. The key technical features are: the crushing chamber is located at the top of the mixing chamber, and its bottom surface is a sieve plate; the side wall of the mixing chamber is provided with a harmless treatment solution input pipe and a main raw material inlet; the conveying mechanism includes a horizontal screw conveyor located below the discharge port of the mixing chamber and a horizontal conveyor belt located below the discharge port of the horizontal screw conveyor; each forming mold in the forming mold assembly is sequentially placed on the upper surface of the horizontal conveyor belt; a long through groove parallel to the conveying direction of the horizontal conveyor belt is provided on the lower part of one side wall of each forming mold; a heating element is built into the bottom of the forming mold, and the electrical terminal of the heating element protrudes from the bottom surface of the long through groove and is connected to a retractable joint; a positioning frame is provided on the side of the horizontal conveyor belt, and the positioning frame is provided with conductive tracks corresponding to the retractable joints of each forming mold; a heat-conducting layer is provided on the inner bottom surface of the forming mold, and a heat-insulating layer is provided on the outer bottom surface.

[0006] The aforementioned fly ash harmless treatment and resource recycling device includes a harmless treatment solution storage tank on the side of the mixing silo. A lifting pump connected to the top of the harmless treatment solution storage tank is fixed thereto. The end of the outlet pipe of the lifting pump is connected to the outer end of the harmless treatment solution input pipe. A flow valve is provided on the harmless treatment solution input pipe.

[0007] The aforementioned fly ash harmless treatment and resource recycling device has a guide plate extending to the middle of the mixing silo at the inner end of the main raw material inlet.

[0008] In the aforementioned fly ash harmless treatment and resource recycling device, the conductive track is parallel to the horizontal conveyor belt, and there are two positioning frames. The two ends of the conductive track are respectively connected and fixed to the two positioning frames, and an insulating sleeve is provided between the positioning frame and the conductive track.

[0009] The aforementioned fly ash harmless treatment and resource recycling device comprises a telescopic joint consisting of a conductive sleeve fitted around the outside of the electrical connection end of the heating element and a spring connecting the inner bottom surface of the conductive sleeve and the top surface of the electrical connection end.

[0010] In the aforementioned fly ash harmless treatment and resource recycling device, the conveying direction of the horizontal conveyor belt is perpendicular to the conveying direction of the horizontal screw conveyor.

[0011] The beneficial effects of this utility model are:

[0012] By integrating fly ash crushing, harmless mixing and treatment, conveying, feeding and shaping functions into one, environmental pollution is reduced on the one hand, and resource utilization is accelerated on the other hand, which meets the needs of modern production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 The right view;

[0015] Figure 3 yes Figure 1 Enlarged view of section A.

[0016] In the diagram: 1. Crushing chamber; 2. Screen plate; 3. Flow valve; 4. Harmless treatment solution input pipe; 5. Lifting pump; 6. Harmless treatment solution storage tank; 7. Horizontal screw conveyor; 8. Molding mold; 9. Horizontal conveyor belt; 10. Mixing bin; 11. Stirring mechanism; 12. Guide plate; 13. Main raw material inlet; 14. Positioning frame; 15. Conductive track; 16. Heating element; 17. Electrical terminal; 18. Insulation layer; 19. Heat-conducting layer; 20. Conductive sleeve; 21. Spring; 22. Insulating sleeve. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown, the fly ash harmless treatment and resource recycling device includes a crushing chamber 1, a mixing chamber 10, a conveying mechanism and a forming mold group.

[0019] The crushing chamber 1 is located at the top of the mixing chamber 10, and the bottom surface of the crushing chamber 1 is a screen plate 2. The side wall of the mixing chamber 10 is equipped with a harmless treatment solution inlet pipe 4 and a main raw material inlet 13. In this embodiment, a harmless treatment solution storage tank 6 is located on the side of the mixing chamber 10. A lift pump 5, connected to the top of the harmless treatment solution storage tank 6, is fixed thereto. The end of the outlet pipe of the lift pump 5 is connected to the outer end of the harmless treatment solution inlet pipe 4, and a flow valve 3 is provided on the harmless treatment solution inlet pipe 4. A guide plate 12 extending towards the middle of the mixing chamber is provided at the inner end of the main raw material inlet 13.

[0020] The conveying mechanism includes a horizontal screw conveyor 7 located below the discharge port of the mixing silo 10, and a horizontal conveyor belt 9 located below the discharge port of the horizontal screw conveyor 7. The conveying direction of the horizontal conveyor belt 9 is perpendicular to the conveying direction of the horizontal screw conveyor 7.

[0021] Each molding die 8 of the molding die assembly is placed sequentially on the upper surface of the horizontal conveyor belt 9. A long through groove parallel to the conveying direction of the horizontal conveyor belt 9 is provided on the lower part of one side wall of each molding die 8. A heating element 16 is built into the bottom of each molding die 8, and the electrical terminal 17 of the heating element 16 protrudes from the bottom surface of the long through groove and is connected to a retractable joint. A positioning frame 14 is provided on the side of the horizontal conveyor belt 9, and a conductive track 15 corresponding to the retractable joint of each molding die 8 is provided on the positioning frame 14. In this embodiment, the conductive track 15 is parallel to the horizontal conveyor belt 9. There are two positioning frames 14, and both ends of the conductive track 15 are respectively connected and fixed to the two positioning frames 14. An insulating sleeve 22 is provided between the positioning frame 14 and the conductive track 15. The retractable joint consists of a conductive sleeve 20 fitted around the electrical terminal 17 of the heating element and a spring 21 connecting the inner bottom surface of the conductive sleeve 20 and the top surface of the electrical terminal 17. A heat-conducting layer 19 is provided on the inner bottom surface of the molding die 8, and a heat-insulating layer 18 is provided on the outer bottom surface.

[0022] Working principle:

[0023] 1. During operation, fly ash is sent to crushing chamber 1. After being crushed, the powder falls into mixing chamber 10 through screen plate 2. At the same time, other molding waste powder is input through main raw material inlet 13. Lifting pump 5 quantitatively delivers harmless treatment solution to mixing chamber 10. Under the action of stirring mechanism 11 in mixing chamber 10, the three are evenly mixed to harmlessly treat the harmful substances in fly ash. Finally, the mixture is discharged into the inlet of horizontal screw conveyor 7.

[0024] 2. The horizontal screw conveyor 7 conveys the mixture towards the horizontal conveyor belt 9. Finally, the mixture is unloaded into the molding die 8 above the horizontal conveyor belt 9 through the discharge port. The horizontal conveyor belt 9 conveys the molding die 8 carrying the material forward. The retractable joint on the side of the molding die 8 contacts the conductive rail 15 to obtain electricity. The heating element 16 generates heat and transmits it to the mixture layer in the die through the heat-conducting layer 19. During the continuous heating process, the mixture layer is heated and solidified. Finally, at the end of the horizontal conveyor belt 9, the retractable joint of the molding die 8 is separated from the conductive rail 15. The workers can remove the die and transport it to the curing area. After curing, it can be used as bricks, realizing resource reuse.

[0025] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A fly ash harmless treatment and resource recycling device, comprising a crushing bin, a mixing bin, a conveying mechanism and a forming die set, characterized in that: The crushing chamber is located at the top of the mixing chamber, and the bottom surface of the crushing chamber is a sieve plate. The side wall of the mixing chamber is provided with a harmless treatment solution input pipe and a main raw material inlet. The conveying mechanism includes a horizontal screw conveyor located below the discharge port of the mixing chamber and a horizontal conveyor belt located below the discharge port of the horizontal screw conveyor. Each forming mold of the forming mold group is placed sequentially on the upper surface of the horizontal conveyor belt. The lower part of one side wall of the forming mold is provided with a long through groove parallel to the conveying direction of the horizontal conveyor belt. The bottom of the forming mold is equipped with a heating element, and the power connection end of the heating element protrudes from the bottom surface of the long through groove and is connected to a telescopic joint. The side of the horizontal conveyor belt is provided with a positioning frame, and the positioning frame is provided with a conductive track corresponding to the telescopic joint of each forming mold. The inner bottom surface of the forming mold is provided with a heat-conducting layer, and the outer bottom surface is provided with a heat-insulating layer.

2. The fly ash harmless treatment and resource recycling device according to claim 1, characterized in that: The mixing silo is equipped with a harmless treatment solution storage tank on its side. A lift pump connected to the top of the harmless treatment solution storage tank is fixed thereto. The end of the outlet pipe of the lift pump is connected to the outer end of the harmless treatment solution input pipe. A flow valve is provided on the harmless treatment solution input pipe.

3. The fly ash harmless treatment and resource recycling device according to claim 1, characterized in that: The inner end of the main raw material inlet is provided with a guide plate extending towards the middle of the mixing bin.

4. The fly ash harmless treatment and resource recycling device according to claim 1, characterized in that: The conductive track is parallel to the horizontal conveyor belt. There are two positioning frames. The two ends of the conductive track are respectively connected and fixed to the two positioning frames. An insulating sleeve is provided between the positioning frame and the conductive track.

5. The fly ash harmless treatment and resource recycling device according to claim 1, characterized in that: The retractable joint consists of a conductive sleeve fitted around the outside of the electrical terminal of the heating element and a spring connecting the inner bottom surface of the conductive sleeve and the top surface of the electrical terminal.

6. The fly ash harmless treatment and resource recycling device according to claim 1, characterized in that: The conveying direction of the horizontal conveyor belt is perpendicular to the conveying direction of the horizontal screw conveyor.

Images