A clogging-resistant leaching separator for incineration fly ash.

Abstract

This utility model proposes an anti-clogging leaching separator for incineration fly ash, comprising a separator body, a fixed base fixedly installed on the middle of one side of the separator body, and a separation tank fixedly installed on the inner side of the fixed base. During the application of this equipment, by setting up an agitation mechanism in conjunction with a slag discharge pipe and a slag discharge regulating valve, the scraper rotates against the inner wall of the screening cylinder during the operation of the agitation mechanism, which can prevent impurities from adhering to and clogging the mesh, ensuring unobstructed filtration channels. At the same time, the scraper and the cleaning auger work together to promote uniform rolling of the solution in the screening cylinder, improve the contact efficiency between fly ash and liquid, accelerate the leaching of chlorine and volatile heavy metals, and improve filtration and screening efficiency. During discharge, the cleaning auger can quickly guide the waste residue to the slag discharge pipe and discharge it through the slag discharge regulating valve, thereby achieving the effect of efficient screening and smooth discharge, solving the problems of low leaching separation efficiency and poor discharge in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of waste incineration fly ash treatment technology, and in particular to an anti-clogging leaching separator for raw fly ash from incineration. Background Technology

[0002] Fly ash has a strong acid neutralization capacity, approximately 3.0 meq / g to 6.0 meq / g (with pH=7 as the endpoint), and is highly alkaline (pH value of the leachate ≥12). It also exhibits strong resistance to changes in environmental pH. Since the solubility of heavy metal hydroxides is generally very low, a high pH value is beneficial for inhibiting the leaching of heavy metals. The 1.5-stage water washing system for fly ash is mainly used to remove chlorine and volatile heavy metals from fly ash. At the same time, by adding conditioning agents, the dissolution of some heavy metals is promoted. The fly ash stored in the original ash silo is quantitatively transported to the water washing separation device through the metering device at the bottom of the original ash silo. Evaporated condensate and process water are added in proportion, and an appropriate amount of conditioning agent is added. After being fully dissolved, it is pumped to the 0.5-stage water washing leaching separation device. The fly ash achieves solid-liquid separation in the solid-liquid separator. The leachate is temporarily stored in the water washing leachate buffer tank, and the solid is used for the next step of fly ash stabilization and shaping.

[0003] Among existing equipment, Chinese patent with publication number "CN213447253U" discloses a heavy metal leaching and separation device, which includes a primary separation container, a primary leaching screen, a material distribution tank, an electric telescopic rod, and a secondary tilting oscillator. The primary leaching screen is rotatably installed inside the primary separation container and has a discharge port fixedly connected to a discharge pipe. The material distribution tank is connected to the discharge pipe through a corrugated pipe and has multiple inlets. The electric telescopic rod is fixedly connected to the material distribution tank. The secondary tilting oscillator is located below the material distribution tank and includes a base, a tilting motor, a tilting frame, a clamping frame, and a support platform. The tilting frame is fixedly connected to the motor shaft of the tilting motor, the clamping frame holds the container bottle, and the support platform is fixedly installed on the base. This device can pre-leach and separate water-soluble impurities in solid waste and then leach the remaining solid waste, improving the accuracy of the leaching test. It can also perform horizontal and tilting leaching separately.

[0004] However, this device has certain defects and shortcomings in practical applications. During its use, the impurities filtered through the leaching screen barrel adhere to the inner wall of the leaching screen barrel. As the leaching separation process continues, the filtered impurities gradually clog the leaching screen barrel. Furthermore, it is not easy to open the equipment for cleaning and maintenance each time, making the cleaning of internal impurities cumbersome and inconvenient to use. This seriously affects the working efficiency of the equipment. It is evident that it has obvious shortcomings in practical applications, and therefore, it needs to be improved in design. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes an anti-clogging leaching separator for incineration fly ash raw ash, which can more accurately solve the problems described above.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes an anti-clogging leaching separator for incineration fly ash, comprising a separator body, a fixed base fixedly installed on the middle of one side of the separator body, a separation tank fixedly installed inside the fixed base, a screening screen cylinder fixedly installed inside the separation tank, a maintenance auxiliary mechanism fixedly installed at the middle of the top rear side of the fixed base, a fixed arm fixedly installed on the front of the maintenance auxiliary mechanism, an agitation mechanism fixedly installed at the front end of the fixed arm, the agitation mechanism being inserted into the inner side of the screening screen cylinder inside the separation tank, a slag discharge pipe fixedly installed at the bottom of the screening screen cylinder, a slag discharge regulating valve fixedly installed through the output end of the slag discharge pipe penetrating the separation tank, and the bottom output end of the separation tank being connected to the separator body via a connecting pipe.

[0008] Furthermore, the maintenance auxiliary mechanism includes a vertical rail, which is fixedly installed in the middle of the back of the fixed base. A first motor is fixedly installed at the bottom inside the vertical rail, and a lead screw is fixedly installed at the output end of the first motor. The lead screw is rotatably connected to the inside of the vertical rail, and a slider is threadedly connected to the outer surface of the lead screw. The slider is slidably connected to the inside of the vertical rail, and the front of the slider is fixedly connected to the rear end of the fixed arm.

[0009] Furthermore, the internal cavity of the vertical rail has a cross-shaped cross section, and the slider has a convex shape when viewed from above. Wear-resistant pads are fixedly connected to the outer surface of the slider.

[0010] Furthermore, support legs are fixedly installed at equal intervals on both the front and rear sides of the bottom of the separator body, and a base plate is fixedly installed on the bottom of the support legs.

[0011] Furthermore, the agitation mechanism includes a top cover covering the top of the separation tank. A sealing plate is fixedly installed at the bottom of the top cover, covering the top of the screening cylinder. A second motor is fixedly installed in the middle of the top of the sealing plate. A rotating shaft is fixedly installed through the sealing plate at the output end of the second motor. A scraper is fixedly installed in a ring at equal intervals on the outer surface of the rotating shaft. The outer side of the scraper is in close contact with the inner wall of the screening cylinder. A cleaning auger is fixedly installed at the lower end of the outer surface of the rotating shaft. The cleaning auger is rotatably connected to the bottom of the filter cylinder.

[0012] Furthermore, an inlet regulating valve is fixedly installed on one side of the top of the top cover, and a delivery hose is fixedly installed on the outer end of the inlet regulating valve.

[0013] Furthermore, a support frame is fixedly installed on one side of the top of the top cover, the conveying hose is supported on the top of the support frame, and a connecting flange is fixedly installed on the outer end of the conveying hose.

[0014] The beneficial effects of this utility model are:

[0015] 1. During the application of this technical solution, the agitation mechanism consisting of a second motor, a rotating shaft, a scraper frame, and a cleaning auger, combined with a slag discharge pipe and a slag discharge regulating valve, ensures that during operation, the scraper frame rotates against the inner wall of the screening cylinder, preventing impurities from adhering to and clogging the mesh, thus ensuring unobstructed filtration channels. Simultaneously, the scraper frame and the cleaning auger work together to promote uniform tumbling of the solution within the screening cylinder, improving the contact efficiency between fly ash and liquid, accelerating the leaching of chlorine and volatile heavy metals, and enhancing filtration and screening efficiency. During discharge, the cleaning auger quickly guides the waste residue to the slag discharge pipe, which then discharges it through the slag discharge regulating valve, thereby achieving efficient screening and smooth discharge, solving the problems of low leaching separation efficiency and poor discharge in the background technology.

[0016] 2. During the application of this technical solution, by setting up a maintenance auxiliary mechanism consisting of a vertical rail, a first motor, a lead screw, and a slider, when thorough cleaning or maintenance is required during use, starting the first motor can drive the lead screw to rotate, causing the slider to slide along the vertical rail. This, in turn, drives the agitator mechanism to rise as a whole through the fixed arm, thereby separating the agitator mechanism from the separation tank and completely exposing the inside of the screening cylinder. This facilitates thorough cleaning and maintenance of each component without the need for complex disassembly steps, thus simplifying the maintenance process and shortening maintenance time. This solves the problem of cumbersome internal cleaning and maintenance of equipment and the resulting impact on work efficiency in the background technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the extended and disassembled structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the stirring mechanism and filter screen structure of this utility model.

[0021] In the diagram: 1. Separator body; 2. Fixed base; 3. Separation tank; 4. Screening cylinder; 5. Fixed arm; 6. Maintenance auxiliary mechanism; 61. Vertical rail; 62. First motor; 63. Lead screw; 64. Sliding block; 7. Agitator mechanism; 71. Top cover; 72. Sealing plate; 73. Second motor; 74. Rotating shaft; 75. Scraper frame; 76. Cleaning auger; 77. Liquid inlet regulating valve; 78. Delivery hose; 79. Erection frame; 710. Connecting flange; 8. Slag discharge pipe; 9. Slag discharge regulating valve; 10. Support leg; 11. Base plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] A clogging-resistant leaching separator for incineration fly ash includes a separator body 1. A fixed base 2 is fixedly installed on the middle of one side of the separator body 1. A separation tank 3 is fixedly installed inside the fixed base 2. A screening screen cylinder 4 is fixedly installed inside the separation tank 3. A maintenance auxiliary mechanism 6 is fixedly installed at the middle of the rear top of the fixed base 2. A fixed arm 5 is fixedly installed on the front of the maintenance auxiliary mechanism 6. An agitation mechanism 7 is fixedly installed at the front end of the fixed arm 5. The agitation mechanism 7 is inserted into the screening screen cylinder 4 inside the separation tank 3. A slag discharge pipe 8 is fixedly installed at the bottom of the screening screen cylinder 4. A slag discharge regulating valve 9 is fixedly installed through the separation tank 3 at the output end of the slag discharge pipe 8. The bottom output end of the separation tank 3 is connected to the separator body 1 through a connecting pipe. During the operation of this device, fly ash and liquid enter the screening screen cylinder inside the separation tank 3. 4. The stirring mechanism 7 operates inside the screening cylinder 4, stirring the internal materials. Chlorine and volatile heavy metals in the fly ash dissolve into the liquid, and the resulting leachate passes through the mesh of the screening cylinder 4 and enters the separator body 1 through the connecting pipe, achieving solid-liquid separation. When slag discharge is required, the slag discharge regulating valve 9 is opened, and the solid waste in the screening cylinder 4 is discharged through the slag discharge pipe 8. During this process, the operation of the stirring mechanism 7 can reduce the adhesion of impurities on the inner wall of the screening cylinder 4, avoid mesh blockage, ensure smooth passage of the leachate, and improve separation efficiency. If internal maintenance is required, the maintenance auxiliary mechanism 6 is activated, and the stirring mechanism 7 is moved out from the inside of the screening cylinder 4 through the fixed arm 5, exposing the inside of the screening cylinder 4 for easy cleaning or maintenance operations, reducing the impact of maintenance on equipment operation, and ensuring continuous and stable operation of the equipment.

[0025] Combination Figures 1-3As shown, the maintenance auxiliary mechanism 6 includes a vertical rail 61, which is fixedly installed in the middle of the back of the fixed base 2. A first motor 62 is fixedly installed at the bottom of the vertical rail 61. A lead screw 63 is fixedly installed at the output end of the first motor 62. The lead screw 63 is rotatably connected to the inside of the vertical rail 61. A slider 64 is threadedly connected to the outer surface of the lead screw 63. The slider 64 is slidably connected to the inside of the vertical rail 61. The front of the slider 64 is fixedly connected to the rear end of the fixed arm 5. The cross-sectional shape of the internal cavity of the vertical rail 61 is cross-shaped. The top view of the slider 64 is also convex. A wear-resistant pad is fixedly connected to the outer surface of the slider 64. Support legs 10 are fixedly installed at equal intervals on both the front and rear sides of the bottom of the separator body 1. A base plate 11 is fixedly installed at the bottom of the support legs 10.

[0026] In the above-described embodiments of the present application, during the application of this device, when the maintenance auxiliary mechanism 6 is working, the first motor 62 starts, and its output end drives the lead screw 63 to rotate inside the vertical rail 61. The rotation of the lead screw 63 causes the slider 64, which is threaded on the outer surface, to slide along the inside of the vertical rail 61. The cross-shaped cavity inside the vertical rail 61 cooperates with the convex structure of the slider 64 to restrict the sliding direction of the slider 64 and ensure the stability of the sliding process. The wear-resistant pad on the outer surface of the slider 64 reduces wear during sliding and extends the service life of the components. The support leg 10 supports the separator body 1 at a certain height. The bottom plate 11 increases the contact area with the ground, improves the stability of the equipment when it is placed, and avoids displacement due to vibration during the operation of the equipment. When it is necessary to move the stirring mechanism 7, the maintenance auxiliary mechanism 6 drives the relevant components to move through the sliding of the slider 64, making the internal maintenance operation of the equipment more convenient, reducing maintenance time, and ensuring the continuous and efficient operation of the equipment.

[0027] Example 2

[0028] Combination Figures 1-4 As shown, the agitation mechanism 7 includes a top cover 71, which covers the top of the separation tank 3. A sealing plate 72 is fixedly installed at the bottom of the top cover 71. The sealing plate 72 covers the top of the screening cylinder 4. A second motor 73 is fixedly installed in the middle of the top of the sealing plate 72. A rotating shaft 74 is fixedly installed through the sealing plate 72 at the output end of the second motor 73. A scraper 75 is fixedly installed in a ring at equal intervals on the outer surface of the rotating shaft 74. The outer side of the scraper 75 is in close contact with the inner wall of the screening cylinder 4. A cleaning auger 76 is fixedly installed at the lower end of the outer surface of the rotating shaft 74. The cleaning auger 76 is rotatably connected to the bottom of the filter cylinder. An inlet regulating valve 77 is fixedly installed on one side of the top of the top cover 71. A conveying hose 78 is fixedly installed at the outer end of the inlet regulating valve 77. A support frame 79 is fixedly installed on one side of the top of the top cover 71. The conveying hose 78 is supported on the top of the support frame 79. A connecting flange 710 is fixedly installed at the outer end of the conveying hose 78.

[0029] In the above-described embodiments of the present application, during the application of this device, when the stirring mechanism 7 is working, the top cover 71 covers the top of the separation tank 3, and the sealing plate 72 covers the top of the screening cylinder 4, which plays a sealing role. The second motor 73 starts, and the output end drives the rotating shaft 74 to rotate. The scraping frame 75 on the outer surface of the rotating shaft 74 rotates with it. Because the outer side of the scraping frame 75 is in contact with the inner wall of the screening cylinder 4, it can scrape the impurities attached to the inner wall during the rotation, preventing the mesh from being blocked. The cleaning auger 76 at the lower end of the rotating shaft 74 rotates synchronously, stirring and pushing the material at the bottom of the screening cylinder 4 to help discharge slag. The liquid inlet regulating valve 77 controls the liquid to enter the screening cylinder 4 through the conveying hose 78. The conveying hose 78 is mounted on the mounting frame 79 to maintain stability. The connecting flange 710 is used to connect with the external pipeline to ensure smooth liquid supply. In the whole process, all components work together to improve screening efficiency, reduce clogging, make the equipment run more stably, and reduce the maintenance frequency.

[0030] The working principle and advantages of this utility model are as follows: Before use, check the status of each component to ensure that the screening cylinder 4 is installed in place and the slag discharge regulating valve 9 is in the closed state. Connect the conveying hose 78 to the external liquid supply system through the connecting flange 710. The conveying hose 78 is mounted on the support frame 79 to prevent the pipeline from shaking. The support legs 10 and the base plate 11 stably support the separator body 1 on the ground to ensure the stability of the equipment during operation. During operation, the liquid is controlled by the liquid inlet regulating valve 77 to enter the screening cylinder 4 in the separation tank 3 through the conveying hose 78. At the same time, the fly ash from the original ash silo is quantitatively fed into the screening cylinder 4 through the metering device. The second motor 73 drives the rotating shaft 74 to rotate. The rotation of the rotating shaft 74 drives the scraping frame 75 to rotate. The scraping frame 75 rotates and scrapes against the inner wall of the screening cylinder 4 to prevent the screening cylinder 4 from being blocked by impurities. During the screening process, the scraping frame 75 works with the rotating cleaning auger 76 to promote efficient and uniform tumbling of the solution inside the screening cylinder 4 in the separation tank 3, thereby improving the filtration and screening efficiency. After the fly ash comes into full contact with the liquid, chlorine and volatile heavy metals dissolve into the liquid to form a leachate. The leachate passes through the mesh of the screening cylinder 4 and enters the separator body 1 through the connecting pipe, completing the initial solid-liquid separation.

[0031] When slag removal is required, open the slag removal regulating valve 9 at the bottom. The second motor 73 continues to run, driving the rotating shaft 74 to rotate the scraper frame 75 and the cleaning auger 76. The scraper frame 75 scrapes and cleans the inside of the screening cylinder 4, and the cleaned waste is guided to the bottom of the screening cylinder 4. The cleaning auger 76 rotates downwards to drive the filtered waste, enabling rapid cleaning and preventing clogging. For thorough cleaning, activate the maintenance auxiliary mechanism 6. The output of the first motor 62 drives the lead screw 63 to rotate, and the slider 64 slides upwards along the cross-shaped cavity of the vertical rail 61. The fixed arm 5 drives the stirring mechanism 7 to rise, pulling the stirring mechanism 7 out of the separation tank 3. The top of the screening cylinder 4 opens, facilitating quick and thorough cleaning. The convex design of the slider 64 and the vertical rail 61... The cross-shaped cavity ensures stable sliding, wear-resistant gaskets reduce sliding wear, sealing plate 72 covers the top of screening cylinder 4 during equipment operation to prevent liquid and fly ash from overflowing, and top cover 71 provides protection. It can be seen that this equipment effectively solves the problems of easy blockage of leaching screens by impurities and cumbersome cleaning in the background technology by rotating scraper 75 to scrape the inner wall of screening cylinder 4, combined with cleaning auger 76 driving waste residue, ensuring continuous and efficient operation of the equipment. The maintenance auxiliary mechanism 6 can remove the stirring mechanism 7 for easy and thorough cleaning and reduce maintenance difficulty. The separator body 1 realizes the temporary storage and subsequent treatment of leachate. The liquid inlet regulating valve 77 precisely controls the liquid input to ensure that fly ash and liquid are mixed in proportion. All structures work together to improve the efficiency of fly ash leaching and separation and the ease of equipment maintenance.

[0032] During the application of this device, the mesh diameter of the screening cylinder 4 ranges from 0.1mm to 0.5mm, the height ranges from 500mm to 1000mm, and the inner diameter ranges from 300mm to 600mm; the diameter of the slag discharge pipe 8 ranges from 50mm to 100mm; the length of the vertical rail 61 ranges from 800mm to 1500mm, and the cross-sectional dimensions of the cross-shaped cavity are 100mm × 100mm; the dimensions of the convex structure of the slider 64 match the cavity of the vertical rail 61, and the thickness of the wear-resistant gasket is 2mm to 5mm; the first motor 62 is a three-phase asynchronous motor of model Y80M1-2 with a rated power of 0.75kW and a rated speed of 2825r / min; the second motor 73 is a three-phase asynchronous motor of model Y90S-2 with a rated power of 1.1kW and a rated speed of 2840r / min; both the liquid inlet regulating valve 77 and the slag discharge regulating valve 9 are of model ZBSF. The electric ball valve has a diameter range of DN25-DN50; the controller is a programmable logic controller of model PLC S7-1200, which is installed in the control cabinet on the side of the separator body 1. The first motor 62, the second motor 73, the liquid inlet regulating valve 77, and the slag discharge regulating valve 9 are all connected to the controller through cables and are powered by AC380V power supply. The controller controls the operation of each component through preset program.

[0033] The separator in this device is specifically a separator device based on the background technology. This device is an improved design for its leaching screen. The overall device follows the existing technical means of the background technology. The protection content of this application does not involve the improvement of the electronic components of the device. Therefore, the working principle of each electronic component is not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They all belong to the conventional technical means of the prior art. The application of the prior art is very mature, so they will not be elaborated here.

[0034] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A clogging-resistant leaching separator for incineration fly ash, characterized in that, The separator includes a separator body (1), a fixed base (2) is fixedly installed on the middle of one side of the separator body (1), a separator tank (3) is fixedly installed on the inner side of the fixed base (2), a screening screen cylinder (4) is fixedly installed inside the separator tank (3), a maintenance auxiliary mechanism (6) is fixedly installed on the middle of the rear top of the fixed base (2), a fixed arm (5) is fixedly installed on the front of the maintenance auxiliary mechanism (6), an agitation mechanism (7) is fixedly installed at the front end of the fixed arm (5), the agitation mechanism (7) is inserted into the inner side of the screening screen cylinder (4) inside the separator tank (3), a slag discharge pipe (8) is fixedly installed at the bottom of the screening screen cylinder (4), a slag discharge regulating valve (9) is fixedly installed through the separator tank (3) at the output end of the slag discharge pipe (8), and the bottom output end of the separator tank (3) is connected to the separator body (1) through a connecting pipe.

2. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 1, characterized in that, The maintenance auxiliary mechanism (6) includes a vertical rail (61), which is fixedly installed in the middle of the back of the fixed base (2). A first motor (62) is fixedly installed at the bottom of the vertical rail (61). A lead screw (63) is fixedly installed at the output end of the first motor (62). The lead screw (63) is rotatably connected to the inside of the vertical rail (61). A slider (64) is threadedly connected to the outer surface of the lead screw (63). The slider (64) is slidably connected to the inside of the vertical rail (61). The front of the slider (64) is fixedly connected to the rear end of the fixed arm (5).

3. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 2, characterized in that, The internal cavity of the vertical rail (61) is cross-shaped, and the top view of the slider (64) is also convex. The outer surface of the slider (64) is fixedly connected with a wear-resistant pad.

4. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 1, characterized in that, Support legs (10) are fixedly installed at equal intervals on the front and rear sides of the bottom of the separator body (1), and a base plate (11) is fixedly installed on the bottom of the support legs (10).

5. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 1, characterized in that, The agitation mechanism (7) includes a top cover (71) which covers the top of the separation tank (3). A sealing plate (72) is fixedly installed at the bottom of the top cover (71). The sealing plate (72) covers the top of the screening cylinder (4). A second motor (73) is fixedly installed in the middle of the top of the sealing plate (72). A rotating shaft (74) is fixedly installed through the sealing plate (72) at the output end of the second motor (73). A scraper (75) is fixedly installed in a ring at equal intervals on the outer surface of the rotating shaft (74). The outer side of the scraper (75) is in close contact with the inner wall of the screening cylinder (4). A cleaning auger (76) is fixedly installed at the lower end of the outer surface of the rotating shaft (74). The cleaning auger (76) is rotatably connected to the bottom of the filter cylinder.

6. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 5, characterized in that, A liquid inlet regulating valve (77) is fixedly installed on one side of the top of the top cover (71), and a delivery hose (78) is fixedly installed on the outer end of the liquid inlet regulating valve (77).

7. The anti-clogging leaching separator for incineration fly ash raw ash according to claim 6, characterized in that, A support frame (79) is fixedly installed on one side of the top of the top cover (71), and the conveying hose (78) is mounted on the top of the support frame (79). A connecting flange (710) is fixedly installed on the outer end of the conveying hose (78).

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