Fly ash solidification treatment device

Abstract

The present invention discloses a fly ash solidification treatment device, comprising: a mixing tank, on which a first feed pipe, a second feed pipe and a liquid medicine adding component are arranged; a partition, which is fixedly arranged on the inner wall of the mixing tank, and the partition separates the mixing tank into a diffusion part and a stirring part distributed up and down; two groups of dust-raising components are symmetrically arranged in the diffusion part, and a conveying unit is arranged at the bottom of the first feed pipe and the second feed pipe, and the conveying unit is used to convey the powder to the dust-raising component. In the present invention, when in use, fly ash and cement can be fed into the mixing tank through the first feed pipe and the second feed pipe, and the two enter the dust-raising component at a uniform speed under the output of the conveying unit, and then the two powders can be lifted up and diffused in the diffusion part through the dust-raising component. In the lifting process, the two powders collide and interact in the air, achieving a rapid mixing effect, and then fall into the stirring part, and water and medicine are added through the spray pipe.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash processing equipment, and in particular to a fly ash solidification processing device. Background Art

[0002] Fly ash refers to the fly ash collected by the flue gas purification system, which mainly comes from the bottom ash of the semi-dry deacidification system and the ash captured by the bag dust collector. After the incineration of domestic waste, the fly ash after desulfurization and adsorption treatment contains a lot of heavy metals, such as copper Cu, zinc Zn, lead Pb, chromium Cr, nickel Ni, mercury Hg, cadmium Cd, etc. These metals are all cationic and can easily leach into water. They should be treated as hazardous wastes. For hazardous wastes such as incineration fly ash, the common harmless disposal method is landfill. Because fly ash contains a large amount of heavy metal inorganic salts, the heavy metal content in its leachate far exceeds the standard and cannot be directly disposed of in hazardous waste landfills. Usually, fly ash solidification is adopted to make the fly ash meet the standard entry requirements.

[0003] In the prior art, fly ash fixing treatment is usually carried out by respectively introducing fly ash and cement into a mixer through a metering device, adding water and a chelating agent into the mixer in a certain proportion, and the fly ash, cement, water and the chelating agent are fully stirred and mixed in the mixer, and then discharged from the mixer to a curing area for curing. In the existing mixing process, fly ash, cement, water and the chelating agent are usually put into the mixer in batches, and then the mixer is started for stirring. However, the stirring method of the above-mentioned mixer is inefficient when in use, and the fly ash and cement cannot be mixed evenly during the process of being put into the mixer. There is room for improvement, so a fly ash solidification treatment device is proposed to solve the above-mentioned problem. Summary of the invention

[0004] The purpose of the present invention is to provide a fly ash solidification treatment device to address the above-mentioned shortcomings.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a fly ash solidification treatment device, comprising:

[0006] A mixing tank, wherein the mixing tank is provided with a first feed pipe, a second feed pipe and a liquid medicine adding component;

[0007] A separator, the separator is fixedly arranged on the inner wall of the mixing tank, and the separator divides the mixing tank into a diffusion part and a stirring part which are distributed up and down;

[0008] Two groups of dust-raising components are symmetrically arranged in the diffusion part, and the bottoms of the first feeding pipe and the second feeding pipe are both provided with conveying units, and the conveying units are used to convey the powder to the dust-raising components, and then the two powders are scattered into the diffusion part through the dust-raising components to mix and then fall into the stirring part;

[0009] The stirring part is provided with a stirring mechanism and a spray pipe for stirring the mixed powder.

[0010] Furthermore, the mixing tank is in the shape of a cylinder, the separator is in the shape of a ring, and a connecting hole connecting the diffusion part and the stirring part is opened in the middle of the separator;

[0011] A flow port is provided at the connection between the separator and the mixing tank;

[0012] The side wall of the communicating hole is arranged to be inclined downward to prevent powder from being scattered and accumulated on the top of the partition.

[0013] Furthermore, the spray pipe is arranged at the bottom of the partition and coaxially therewith, and the spray pipe is connected to the liquid medicine adding assembly;

[0014] The spray pipe is in a circular shape and is provided with a plurality of spray ports inclined downward for spraying the agent and driving the air circulation inside the mixing tank to prevent dust from being accumulated in the diffusion part for a long time.

[0015] Further, the dust removal assembly includes a carrying box arranged at the output end of the conveying unit;

[0016] The side of the carrying box away from the conveying unit is provided with an inclined surface;

[0017] Two groups of agitating blades that fit the inclined surface are arranged in the carrier box;

[0018] The carrier box is provided with a dust-raising gear which drives two sets of agitating blades to rotate in opposite directions and mesh with each other;

[0019] The dust emission component also includes a dust emission driving mechanism arranged outside the mixing tank, and the output end of the dust emission driving mechanism is provided with a transmission gear meshing with a dust emission gear.

[0020] Furthermore, the conveying unit includes a conveying pipe connected to the mixing tank, a spiral blade arranged in the conveying pipe, and a conveying drive mechanism for driving the spiral blade to rotate.

[0021] Further, the stirring mechanism includes two sets of stirring rods;

[0022] The two groups of stirring rods are provided with stirring blades, the stirring blades are distributed in an intermittent spiral form, and the stirring blades on the two groups of stirring rods are staggered;

[0023] The stirring mechanism also includes a stirring driving mechanism arranged outside the mixing tank, and the stirring driving mechanism is used to drive the two groups of stirring rods to run in opposite directions.

[0024] Furthermore, the stirring blades are tiltedly arranged on the stirring rod, and the stirring blades are welded to the stirring rod.

[0025] Furthermore, the interior of the mixing tank is sealed, and a support frame and a discharge pipe are provided on the mixing tank.

[0026] The beneficial effects of the present invention are embodied in:

[0027] When the present invention is in use, fly ash and cement can be fed into the mixing tank through the first feeding pipe and the second feeding pipe, and the two can enter the dust-raising component at a uniform speed under the output of the conveying unit, and then the two powders can be lifted up by the dust-raising component and diffused in the diffusion part. During the lifting process, the two powders collide and interact in the air, achieving a rapid mixing effect, and then fall into the stirring part, water and reagents are added through the spray pipe, and stirring and mixing are carried out under the action of the stirring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front structural cross-sectional view of the present invention;

[0029] Figure 2 A three-dimensional view of the present invention;

[0030] Figure 3 It is a three-dimensional diagram of the cross-sectional structure of the present invention;

[0031] Figure 4 It is a bottom view of the cross-sectional structure of the present invention;

[0032] Figure 5 It is a partial view of the dust-raising component of the present invention.

[0033] In the figure:

[0034] 1. Mixing tank; 11. First feeding pipe; 12. Second feeding pipe; 13. Conveying unit; 131. Conveying drive mechanism; 132. Spiral blade; 14. Liquid medicine adding component;

[0035] 2. Diffusion part;

[0036] 3. Mixing part;

[0037] 4. separator; 41. flow opening;

[0038] 5. Dust-raising assembly; 51. Carrying box; 52. Dust-raising driving mechanism; 53. Dust-raising gear; 54. Agitator blade;

[0039] 6. Sprinkler pipe;

[0040] 7. stirring mechanism; 71. stirring rod; 72. stirring blade; 73. stirring drive mechanism. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-5 The present invention discloses a fly ash solidification treatment device, comprising:

[0043] A mixing tank 1, wherein the mixing tank 1 is in a cylindrical shape, and is provided with a first feed pipe 11, a second feed pipe 12 and a liquid medicine adding assembly 14. The mixing tank 1 is sealed inside, and is also provided with a support frame and a discharge pipe;

[0044] A separator 4, wherein the separator 4 is fixedly arranged on the inner wall of the mixing tank 1, and the separator 4 divides the mixing tank 1 into a diffusion part 2 and a stirring part 3 which are distributed up and down;

[0045] Two groups of dust-raising components 5 are symmetrically arranged in the diffusion part 2. The first feeding pipe 11 and the second feeding pipe 12 are both provided with a conveying unit 13 at the bottom. The conveying unit 13 is used to convey the powder to the dust-raising component 5, and then the two powders are scattered into the diffusion part 2 through the dust-raising component 5 to mix and then fall into the stirring part 3.

[0046] The stirring part 3 is provided with a stirring mechanism 7 and a spray pipe 6 for stirring the mixed powder.

[0047] Through the above-mentioned structural arrangement, when the equipment is in use, fly ash and cement can be fed into the mixing tank 1 through the first feeding pipe 11 and the second feeding pipe 12, and the two can enter the dust-raising component 5 at a uniform speed under the output of the conveying unit 13, and then the two powders can be lifted up by the dust-raising component 5 and diffused in the diffusion part 2. During the lifting process, the two powders collide and interact in the air, achieving a rapid mixing effect, and then fall into the stirring part 3, water and agents are added through the spray pipe 6, and stirred and mixed under the action of the stirring mechanism 7.

[0048] It should be noted that the separator 4 is in a circular ring shape, and a connecting hole is opened in the middle of the separator 4;

[0049] A flow port 41 is provided at the connection between the separator 4 and the mixing tank 1;

[0050] The side wall of the connecting hole is tilted downward to prevent powder from scattering and accumulating on the top of the partition 4.

[0051] Through the above-mentioned structural arrangement, the dust in the air can fall onto the inclined surface at the top of the partition 4 during the falling process, and slide into the stirring part 3.

[0052] It should be further supplemented that the spray pipe 6 is arranged at the bottom of the partition 4 and is coaxially arranged therewith, and the spray pipe 6 is connected to the liquid medicine adding assembly 14;

[0053] The spray pipe 6 is in a circular shape and is provided with a plurality of spray ports inclined downward for spraying the agent and driving the air circulation inside the mixing tank 1 to prevent dust from being accumulated in the diffusion part 2 for a long time.

[0054] Through the spray pipe 6 and the spray port arranged obliquely downward, water and medicine can be evenly transported to the mixing tank 1, and the water curtain sprayed from the spray port can prevent the dust brought up by the stirring mechanism 7 from re-entering the diffusion part 2 during the stirring process, thereby providing a barrier effect;

[0055] Secondly, if Figure 1 As shown, the water curtain sprayed from the spray port is tilted downward, which can drive the air circulation inside the mixing tank 1 and guide the dust inside the diffusion part 2 to enter the stirring part 3, while the air inside the stirring part 3 can flow back to the diffusion part 2 through the flow port 41 set on the side of the partition 4, so as to realize the air circulation inside the mixing tank 1 and drive the air containing dust to pass through the water curtain. The flying powder in the air is absorbed by the water droplets in the water curtain and then settled in the stirring part 3 for subsequent stirring process.

[0056] It should be noted that the dust removal assembly 5 includes a carrying box 51 disposed at the output end of the conveying unit 13;

[0057] The side of the carrying box 51 away from the conveying unit 13 is provided with an inclined surface;

[0058] The carrier box 51 is provided with two sets of agitating blades 54 that fit the inclined surface;

[0059] The carrier box 51 is provided with a dust-raising gear 53 which drives two sets of agitating blades 54 to rotate in opposite directions and mesh with each other;

[0060] The dust emission component 5 further includes a dust emission driving mechanism 52 disposed outside the mixing tank 1 , and an output end of the dust emission driving mechanism 52 is provided with a transmission gear meshing with a dust emission gear 53 .

[0061] When the above structure is in use, the dust-raising driving mechanism 52 can drive the two sets of agitating blades 54 to rotate synchronously at high speed. When the powder delivered by the conveying unit 13 falls on the rotating agitating blades 54, it will be broken up and pushed into the diffusion part 2, achieving the effect of aerial mixing and improving the mixing efficiency.

[0062] Furthermore, the conveying unit 13 includes a conveying pipe connected to the mixing tank 1 , a spiral blade 132 disposed in the conveying pipe, and a conveying driving mechanism 131 for driving the spiral blade 132 to rotate.

[0063] Finally, it should be noted that the stirring mechanism 7 includes two sets of stirring rods 71;

[0064] The two groups of stirring rods 71 ​​are provided with stirring blades 72, and the stirring blades 72 are distributed in an intermittent spiral form. The stirring blades 72 on the two groups of stirring rods 71 ​​are staggered.

[0065] The stirring mechanism 7 further comprises a stirring driving mechanism 73 disposed outside the mixing tank 1 , and the stirring driving mechanism 73 is used to drive the two groups of stirring rods 71 ​​to run in opposite directions.

[0066] When the above structure is in use, through the reasonable arrangement of the blades, when the two stirring shafts rotate in opposite directions, an overlapping area is formed at the radial center of the mixer. This area is the vortex junction area of ​​the two stirring cycles. The materials have a strong exchange effect here, and the materials produce a cyclic three-dimensional motion during stirring, thereby achieving a three-dimensional stirring effect, so that the equipment can make the mixed materials have a strong relative motion at a relatively low speed to achieve the best stirring effect. At the same time, at any time during the stirring process, all spatial materials are stirred, and there is no stirring dead angle, which can fully meet the requirements of environmental protection emissions.

[0067] At the same time, the stirring paddles 72 are tilted on the stirring rod 71, and the stirring paddles 72 are welded to the stirring rod 71. The tilted stirring paddles 72 are spirally distributed on the stirring rod 71, which can drive the materials deposited at the bottom to surge when rotating, thereby improving the stirring effect.

[0068] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0069] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0070] In addition, "plurality" means two or more.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fly ash solidification treatment device, characterized in that: include: A mixing tank (1), wherein the mixing tank (1) is provided with a first material inlet pipe (11), a second material inlet pipe (12) and a liquid medicine adding component (14); A separator (4), the separator (4) being fixedly arranged on the inner wall of the mixing tank (1), the separator (4) dividing the mixing tank (1) into a diffusion part (2) and a stirring part (3) which are arranged vertically; Two groups of dust-raising components (5) are symmetrically arranged in the diffusion part (2); a conveying unit (13) is arranged at the bottom of each of the first feeding pipe (11) and the second feeding pipe (12); the conveying unit (13) is used to convey powder to the dust-raising component (5), and then scatter the two powders into the diffusion part (2) through the dust-raising component (5) to mix and then fall into the stirring part (3); The stirring portion (3) is provided with a stirring mechanism (7) and a spray pipe (6) for stirring the mixed powder; The mixing tank (1) is in the shape of a cylinder, the partition (4) is in the shape of a ring, and a connecting hole connecting the diffusion part (2) and the stirring part (3) is provided in the middle of the partition (4); A flow port (41) is provided at the connection between the separator (4) and the mixing tank (1); The side wall of the communicating hole is arranged to be inclined downward to prevent powder from being scattered and accumulated on the top of the partition (4); The spray pipe (6) is arranged at the bottom of the partition (4) and is coaxially arranged therewith, and the spray pipe (6) is in communication with the liquid medicine adding assembly (14); The spray pipe (6) is in the shape of a ring and is provided with a plurality of spray ports arranged obliquely downwards, for spraying the agent and promoting air circulation inside the mixing tank (1), thereby preventing dust from being accumulated in the diffusion part (2) for a long time; The dust removal component (5) comprises a carrying box (51) arranged at the output end of the conveying unit (13); A side of the carrying box (51) away from the conveying unit (13) is provided with an inclined surface; Two groups of agitating blades (54) that are in contact with the inclined surface are arranged in the carrying box (51); The carrying box (51) is provided with a dust-raising gear (53) for driving two sets of agitating blades (54) to rotate in opposite directions and mesh with each other; The dust emission component (5) further comprises a dust emission driving mechanism (52) arranged outside the mixing tank (1), wherein an output end of the dust emission driving mechanism (52) is provided with a transmission gear meshing with a dust emission gear (53); The conveying unit (13) comprises a conveying pipe connected to the mixing tank (1), a spiral blade (132) arranged in the conveying pipe, and a conveying drive mechanism (131) for driving the spiral blade (132) to rotate.

2. A fly ash solidification treatment device according to claim 1, characterized in that: The stirring mechanism (7) comprises two sets of stirring rods (71); The two groups of stirring rods (71) are provided with stirring blades (72), the stirring blades (72) are distributed in an intermittent spiral form, and the stirring blades (72) on the two groups of stirring rods (71) are distributed in a staggered manner; The stirring mechanism (7) further comprises a stirring drive mechanism (73) arranged outside the mixing tank (1), wherein the stirring drive mechanism (73) is used to drive the two sets of stirring rods (71) to run in opposite directions.

3. A fly ash solidification treatment device according to claim 2, characterized in that: The stirring blade (72) is arranged obliquely on the stirring rod (71), and the stirring blade (72) is welded to the stirring rod (71).

4. The fly ash solidification treatment device according to claim 1, characterized in that: The interior of the mixing tank (1) is sealed, and a support frame and a discharge pipe are provided on the mixing tank (1).

Images