Mixing and stirring device for waste incineration fly ash and washing liquid

Abstract

The utility model relates to the technical field of waste incineration fly ash treatment and recycling, and provides a waste incineration fly ash and washing liquid mixing and stirring device which comprises a stirring tank, an inner wall cleaning assembly and a dispersing and stirring assembly, the inner wall cleaning assembly comprises a first driving device and a first rotating shaft, the output end of the first driving device is in transmission connection with the first rotating shaft, one end of the first rotating shaft extends into the stirring tank, and wall scraping blades are arranged on the first rotating shaft; the dispersing and stirring assembly comprises a second driving device and a second rotating shaft, the output end of the second driving device is in transmission connection with the second rotating shaft, one end of the second rotating shaft extends into the stirring tank and is located between the first rotating shaft and the inner wall of the stirring tank, and a dispersing disc is arranged on the second rotating shaft. The waste incineration fly ash and washing liquid mixing and stirring device overcomes the defects that when an existing fly ash mixing and stirring tank is used, large agglomerated particles are prone to being attached to the inner wall of the stirring tank, the dissolving effect of fly ash soluble salt is affected, and a pipeline is blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of waste incineration fly ash treatment, disposal and resource utilization, in particular to a waste incineration fly ash and water washing liquid mixing and stirring device. Background Art

[0002] Cement kiln co-treatment technology is the main method for treating fly ash from the incineration of domestic waste. Since fly ash contains a large amount of soluble chloride salts, this will have a significant impact on cement production. Therefore, in order to improve the fly ash treatment capacity of cement kilns, fly ash water washing and dechlorination technology is required to remove the soluble chloride salts in fly ash. In this process, the waste incineration fly ash and the water washing liquid are efficiently mixed in the mixing tank to ensure that the soluble salts in the fly ash are fully dissolved, which is a key step in water washing and dechlorination.

[0003] The current fly ash mixing tank mainly adopts conventional mixing tank, but because the fly ash particles are fine and have high viscosity, in the process of industrial application, when a large amount of fly ash is quickly mixed with water washing liquid, it is easy to stick to the wall and produce large agglomerated particles, which affects the dissolution effect of fly ash soluble salt and causes pipeline blockage. Utility Model Content

[0004] The utility model provides a device for mixing and stirring fly ash from garbage incineration and washing liquid, which is used to solve the defect that large agglomerated particles are easily attached to the inner wall of the mixing tank when the existing fly ash mixing and stirring tank is used, affecting the dissolution effect of soluble salt in the fly ash and causing pipeline blockage.

[0005] The utility model provides a device for mixing and stirring fly ash from garbage incineration and water washing liquid, comprising a stirring tank, an inner wall cleaning component and a dispersing and stirring component.

[0006] A stirring chamber is formed in the stirring tank; the inner wall cleaning assembly includes a first driving device and a first rotating shaft, the output end of the first driving device is transmission-connected to the first rotating shaft, the first rotating shaft is coaxially arranged with the stirring tank and one end of the first rotating shaft extends into the stirring tank, and the end of the first rotating shaft located in the stirring tank is provided with a scraping blade, and the scraping blade is used to scrape off the attachments on the inner wall of the stirring tank; the dispersing stirring assembly includes a second driving device and a second rotating shaft, the output end of the second driving device is transmission-connected to the second rotating shaft, one end of the second rotating shaft extends into the stirring tank and is located between the first rotating shaft and the inner wall of the stirring tank, and the end of the second rotating shaft located in the stirring tank is provided with a dispersing disk, and the dispersing disk is used to break up the agglomerated particles of fly ash.

[0007] According to the garbage incineration fly ash and water washing liquid mixing and stirring device provided by the utility model, a plurality of the scraping blades are provided at intervals along the circumferential direction on one end of the first rotating shaft located in the stirring tank, and a plurality of scraping plates are provided at intervals along the length direction of the scraping blades.

[0008] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, the scrapers on different scraping wall blades are staggered.

[0009] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, a discharge port is provided at the bottom of the stirring tank, a filter screen is provided at the inlet end of the discharge port, and when the scraping wall blade rotates, at least one of the scrapers can scrape the filter screen.

[0010] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, the scraper is a polytetrafluoroethylene scraper.

[0011] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, a plurality of the dispersion discs are arranged at intervals along the length direction at one end of the second rotating shaft located inside the stirring tank.

[0012] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, the first rotating shaft is rotatably connected to the bottom of the stirring tank.

[0013] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, a bearing seat is provided at the bottom of the stirring tank, and the first rotating shaft is rotatably connected to the bottom of the stirring tank through the bearing seat.

[0014] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, the stirring tank includes a tank body and a tank cover, the tank cover is detachably connected to the tank body, and a feed port is provided on the tank cover and / or the stirring tank.

[0015] According to the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, an emptying port is provided at the bottom of the stirring tank.

[0016] For the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model, by arranging an inner wall cleaning component and a dispersion and stirring component, during cleaning, the output end of the first driving device rotates to drive the first rotating shaft and the scraping wall blade to rotate, and the scraping wall blade can scrape off large agglomerated particles attached to the inner wall of the stirring tank, preventing the accumulation of large agglomerated particles from affecting the dissolution effect of fly ash soluble salts and causing pipeline blockage. At the same time, the output end of the second driving device rotates to drive the second rotating shaft and the dispersion disc to rotate, and the large agglomerated particles after being scraped off can be dispersed under the action of the dispersion disc located between the first rotating shaft and the inner wall of the stirring tank, preventing them from depositing at the bottom of the stirring tank, thus solving the problems of fly ash agglomerating into large particles and particle wall sticking. In addition, the scraping wall blade can also stir the slurry in the stirring tank.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of a garbage incineration fly ash and washing liquid mixing and stirring device provided by an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of an inner wall cleaning component in a garbage incineration fly ash and washing liquid mixing and stirring device provided by an embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of a dispersion and stirring component in a garbage incineration fly ash and washing liquid mixing and stirring device provided by an embodiment of the present utility model.

[0022] Figure 4 It is a top view of the tank cover in a garbage incineration fly ash and washing liquid mixing and stirring device provided by an embodiment of the present utility model.

[0023] Reference Signs:

[0024] 10, stirring tank; 110, tank body; 111, discharge port; 112, filter screen; 113, bearing seat; 114, evacuation port; 120, tank cover; 121, fly ash feed port; 122, washing liquid feed port; 123, shaft hole; 130, stirring chamber; 20, inner wall cleaning component; 210, first driving device; 220, first rotating shaft; 230, scraping blade; 231, scraping plate; 30, dispersion and stirring component; 310, second driving device; 320, second rotating shaft; 330, dispersion disc. Detailed Embodiments

[0025] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0030] The following is combined with Figures 1 to 4 Describe the garbage incineration fly ash and washing liquid mixing and stirring device provided by the present utility model.

[0031] See also Figures 1 to 3 As shown, the garbage incineration fly ash and water washing liquid mixing and stirring device provided by the embodiment of the utility model includes: a stirring tank 10, an inner wall cleaning component 20 and a dispersing stirring component 30.

[0032] A stirring chamber 130 is formed in the stirring tank 10; the inner wall cleaning component 20 includes a first driving device 210 and a first rotating shaft 220, the output end of the first driving device 210 is transmission-connected to the first rotating shaft 220, the first rotating shaft 220 is coaxially arranged with the stirring tank 10 and one end thereof extends into the stirring tank 10, and the end of the first rotating shaft 220 located in the stirring tank 10 is provided with a scraping blade 230, and the scraping blade 230 is used to scrape off the attachments on the inner wall of the stirring tank 10; the dispersing stirring component 30 includes a second driving device 310 and a second rotating shaft 320, the output end of the second driving device 310 is transmission-connected to the second rotating shaft 320, one end of the second rotating shaft 320 extends into the stirring tank 10 and is located between the first rotating shaft 220 and the inner wall of the stirring tank 10, and the end of the second rotating shaft 320 located in the stirring tank 10 is provided with a dispersing disk 330, and the dispersing disk 330 is used to break up the agglomerated particles of fly ash.

[0033] The utility model provides a mixing and stirring device for waste incineration fly ash and washing liquid, by providing an inner wall cleaning component 20 and a dispersing and stirring component 30. During cleaning, the output end of the first driving device 210 rotates to drive the first rotating shaft 220 and the wall scraping blade 230 to rotate. The wall scraping blade 230 can scrape off the large agglomerated particles attached to the inner wall of the mixing tank 10, preventing the accumulation of large agglomerated particles from affecting the dissolution effect of the soluble salt of the fly ash and causing pipeline blockage. At the same time, the output end of the second driving device 310 rotates to drive the second rotating shaft 320 and the dispersing disk 330 to rotate. The large agglomerated particles after scraping can be dispersed under the action of the dispersing disk 330 located between the first rotating shaft 220 and the inner wall of the mixing tank 10, preventing them from being deposited at the bottom of the mixing tank 10, thereby solving the problem of fly ash agglomerating into large particles and particles hanging on the wall. In addition, the wall scraping blade 230 can also stir the slurry in the mixing tank 10.

[0034] Specifically, the scraping blade 230 can directly contact the inner wall of the mixing tank 10. When the first rotating shaft 220 drives the scraping blade 230 to rotate, the scraping blade 230 itself can directly scrape off the large agglomerated particles attached to the inner wall of the mixing tank 10. A scraping component, such as a scraper 231, a wire brush, a row of nails, etc., can also be provided on the scraping blade 230. When the first rotating shaft 220 drives the scraping blade 230 to rotate, the scraping component provided on the scraping blade 230 acts on the inner wall of the mixing tank 10, thereby scraping off the large agglomerated particles attached to the inner wall of the mixing tank 10.

[0035] On the first rotating shaft 220, the number of the scraping blades 230 is at least one. For example, when the number of the scraping blades 230 is one, the first rotating shaft 220 drives the scraping blade 230 to rotate, and the single scraping blade 230 can cover the inner wall of the stirring tank 10 by 360° after rotating one week. When the number of the scraping blades 230 is multiple, the multiple scraping blades 230 are arranged at intervals in the circumferential direction on the first rotating shaft 220. At this time, the first rotating shaft 220 can adopt an operation mode of continuously rotating in the same direction, or the first rotating shaft 220 can rotate reciprocally within a set angle range, so that the multiple scraping blades 230 arranged at intervals in the circumferential direction can cover the inner wall of the stirring tank 10 by 360°.

[0036] The shape of the scraping blade 230 can be correspondingly set according to the shape of the inner wall of the stirring tank 10. For example, in this embodiment, the scraping blade 230 is a bent part, so as to clean both the bottom wall and the side wall of the stirring tank 10.

[0037] Both the first driving device 210 and the second driving device 310 adopt motors, and both the first driving device 210 and the second driving device 310 are located outside the stirring tank 10.

[0038] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, a plurality of scraping blades 230 are arranged at intervals in the circumferential direction at one end of the first rotating shaft 220 located in the stirring tank 10, and a plurality of scraping plates 231 are arranged at intervals in the length direction of the scraping blades 230. By arranging a plurality of scraping blades 230 at intervals in the circumferential direction on the first rotating shaft 220, when the first rotating shaft 220 rotates, the plurality of scraping blades 230 can simultaneously clean the inner wall of the stirring tank 10, improving the cleaning efficiency and cleaning effect. In addition, by arranging a plurality of scraping plates 231 at intervals in the length direction of the scraping blades 230, the inner wall of the stirring tank 10 can be cleaned by the scraping plates 231, avoiding abrasion caused by direct contact between the scraping blades 230 and the inner wall of the stirring tank 10. Specifically, in implementation, the scraping plates 231 and the scraping blades 230 can be configured to be detachably connected. When the scraping plates 231 are severely worn, they can be disassembled and replaced.

[0039] Specifically, in this embodiment, two scraping blades 230 are arranged at intervals in the circumferential direction at one end of the first rotating shaft 220 located in the stirring tank 10, and the two scraping blades 230 are respectively located on both sides of the rotating shaft.

[0040] See Figure 1 and Figure 2As shown, according to some embodiments of the present utility model, the scraping plates 231 on different scraping wall blades 230 are arranged staggeredly. By configuring the scraping plates 231 on different scraping wall blades 230 to be arranged staggeredly, the resistance received by each scraping wall blade 230 during rotation can be reduced, and it can be ensured that the scraping plates 231 on different scraping wall blades 230 can fully cover the area to be cleaned on the inner wall of the stirring tank 10.

[0041] See Figure 1 As shown, according to some embodiments of the present utility model, a discharge port 111 is provided at the bottom of the stirring tank 10, and a filter screen 112 is provided at the inlet end of the discharge port 111. When the scraping wall blade 230 rotates, at least one scraping plate 231 can scrape the filter screen 112. By providing the filter screen 112 at the discharge port 111, large particles can be filtered through the filter screen 112, otherwise it will cause blockage of the subsequent pipeline when discharged from the discharge port 111. And when the scraping wall blade 230 rotates, at least one scraping plate 231 can scrape the filter screen 112 to prevent large particles from accumulating at the filter screen 112 and causing blockage.

[0042] It should be noted that the number of the discharge ports 111 can be single or multiple. When there are multiple discharge ports 111, filter screens 112 are correspondingly provided at the inlet ends of each discharge port 111, and each discharge port 111 can be connected to a set position through a pipeline.

[0043] According to some embodiments of the present utility model, the scraping plate 231 is a polytetrafluoroethylene scraping plate. The polytetrafluoroethylene scraping plate (PTFE scraping plate) is a scraping plate made of polytetrafluoroethylene (PTFE) material. The polytetrafluoroethylene scraping plate has excellent corrosion resistance, high temperature resistance and low friction coefficient, and can be stably used in the fly ash and washing liquid mixing and stirring device for a long time.

[0044] See Figure 1 As shown, according to some embodiments of the present utility model, a plurality of dispersion plates 330 are arranged at intervals along the length direction at one end of the second rotating shaft 320 located in the stirring tank 10. By arranging a plurality of dispersion plates 330 at intervals along the length direction at one end of the second rotating shaft 320 located in the stirring tank 10, the fly ash agglomerated particles at different depths can be dispersed respectively by the plurality of dispersion plates 330, thereby improving the dispersion efficiency and dispersion effect.

[0045] See Figure 1 As shown, according to some embodiments of the present utility model, the first rotating shaft 220 is rotatably connected to the bottom of the stirring tank 10. By configuring the first rotating shaft 220 to be rotatably connected to the bottom of the stirring tank 10, the stability of the first rotating shaft 220 during rotation can be ensured, and the scraping wall blade 230 can be prevented from shifting during rotation and colliding with the inner wall of the stirring tank 10.

[0046] See Figure 1As shown, according to some embodiments of the present utility model, a bearing seat 113 is provided at the bottom of the stirring tank 10, and the first rotating shaft 220 is rotatably connected to the bottom of the stirring tank 10 through the bearing seat 113. By providing the bearing seat 113, stable support can be provided for the bearing, preventing the bearing from shaking and shifting. At the same time, the bearing seat 113 can disperse the load, enabling the rotating shaft to bear a large mechanical load and enhancing the durability of the equipment.

[0047] To prevent the mixture in the stirring tank 10 from contacting the bearing, on the premise of not interfering with the rest of the structure, a sealing structure for sealing the bearing can be provided on the bearing seat 113, or a protective cover can be provided to seal the bearing seat 113.

[0048] See Figure 1 and Figure 4 As shown, according to some embodiments of the present utility model, the stirring tank 10 includes a tank body 110 and a tank cover 120. The tank cover 120 is detachably connected to the tank body 110, and a fly ash feed port 121 and a washing liquid feed port 122 are provided on the tank cover 120. By setting the stirring tank 10 as a detachable tank body 110 and tank cover 120, it is convenient to repair and replace internal components, reducing the downtime and maintenance difficulty. The fly ash feed port 121 and the washing liquid feed port 122 are respectively used to introduce fly ash and washing liquid into the stirring tank 10.

[0049] Specifically, in this embodiment, the tank body 110 and the tank cover 120 are connected by a flange. Shaft holes 123 for the first rotating shaft 220 and the second rotating shaft 320 to pass through are provided on the tank cover 120.

[0050] In some other embodiments, a fly ash feed port 121 and a washing liquid feed port 122 can also be provided on the tank body 110.

[0051] See Figure 1 As shown, according to some embodiments of the present utility model, a drain port 114 is provided at the bottom of the stirring tank 10. By providing the drain port 114 at the bottom of the stirring tank 10, the mixture in the stirring tank 10 can be discharged by opening the drain port 114 when necessary (such as in an emergency).

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A device for mixing and stirring fly ash from garbage incineration and water washing liquid, characterized in that: include: A stirring tank, wherein a stirring chamber is formed in the stirring tank; An inner wall cleaning component, the inner wall cleaning component comprises a first driving device and a first rotating shaft, the output end of the first driving device is drivingly connected to the first rotating shaft, the first rotating shaft is coaxially arranged with the stirring tank and one end of the first rotating shaft extends into the stirring tank, and one end of the first rotating shaft located in the stirring tank is provided with a wall scraping blade, and the wall scraping blade is used to scrape off attachments on the inner wall of the stirring tank; A dispersion and stirring assembly, wherein the dispersion and stirring assembly comprises a second driving device and a second rotating shaft, wherein the output end of the second driving device is drivingly connected to the second rotating shaft, one end of the second rotating shaft extends into the stirring tank and is located between the first rotating shaft and the inner wall of the stirring tank, and a dispersion disk is provided at one end of the second rotating shaft located in the stirring tank, and the dispersion disk is used to break up the agglomerated particles of fly ash.

2. The device for mixing and stirring fly ash from garbage incineration and water washing liquid according to claim 1, characterized in that: A plurality of wall-scraping blades are provided at intervals along the circumferential direction at one end of the first rotating shaft located in the stirring tank, and a plurality of scrapers are provided at intervals along the length direction of the wall-scraping blade.

3. The device for mixing and stirring waste incineration fly ash and washing liquid according to claim 2, characterized in that: The scrapers on different scraping blades are arranged alternately.

4. The device for mixing and stirring fly ash from garbage incineration and water washing liquid according to claim 2, characterized in that: A discharge port is provided at the bottom of the mixing tank, and a filter screen is provided at the inlet end of the discharge port. When the scraping blades rotate, at least one scraper can scrape the filter screen.

5. The device for mixing and stirring fly ash from garbage incineration and water washing liquid according to claim 2, characterized in that: The scraper is a polytetrafluoroethylene scraper.

6. The device for mixing and stirring fly ash from garbage incineration and water washing liquid according to claim 1, characterized in that: A plurality of dispersion discs are arranged at intervals along the length direction at one end of the second rotating shaft located in the stirring tank.

7. The device for mixing and stirring waste incineration fly ash and washing liquid according to any one of claims 1 to 6, characterized in that: The first rotating shaft is rotatably connected to the bottom of the stirring tank.

8. The device for mixing and stirring fly ash from garbage incineration and water washing liquid according to claim 7, characterized in that: A bearing seat is provided at the bottom of the stirring tank, and the first rotating shaft is rotatably connected to the bottom of the stirring tank through the bearing seat.

9. The device for mixing and stirring waste incineration fly ash and washing liquid according to any one of claims 1 to 6, characterized in that: The stirring tank comprises a tank body and a tank cover, wherein the tank cover is detachably connected to the tank body, and a fly ash feed port and a water washing liquid feed port are arranged on the tank cover and / or the stirring tank.

10. The device for mixing and stirring waste incineration fly ash and washing liquid according to any one of claims 1 to 6, characterized in that: The bottom of the stirring tank is provided with an emptying port.

Images