Device for removing heavy metal from household garbage fly ash

Abstract

The utility model relates to the technical field of household garbage treatment, in particular to a device for removing heavy metal from household garbage fly ash. According to the technical scheme, the device comprises a heavy metal separation barrel, a rotating rod and a motor, the rotating rod is rotationally installed in the heavy metal separation barrel, the motor is fixedly installed on one side of the top of the heavy metal separation barrel, and bevel gears matched with each other are fixedly installed at the top of the heavy metal separation barrel and the output end of the motor. Through the arrangement of the rotating rod, the motor, the bevel gear and the stirring paddle, after a worker adds incinerated fly ash into the heavy metal separation barrel, a heavy metal catching agent and water are added into the heavy metal separation barrel, the motor drives the stirring paddle to rotate through the rotating rod and the bevel gear, and the heavy metal catching agent and the water are separated from the heavy metal separation barrel; fly ash, water and a heavy metal capturing agent are stirred and mixed by the stirring paddle, so that heavy metal is solidified and separated out from a fly ash solution, the cost is reduced, and the heavy metal removal efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of domestic waste treatment, in particular to a device for removing heavy metals from domestic waste fly ash. Background Art

[0002] With the continuous development of economy and the acceleration of urbanization, the amount of urban domestic waste generated each year has doubled. The traditional way of waste disposal is to build landfills and bury the waste. This method has the disadvantages of occupying a large amount of land and polluting soil and groundwater. In order to solve these problems, people use the method of incinerating waste to deal with the waste. Among them, the "device for removing heavy metals from fly ash of domestic waste" disclosed by application number "CN206373153U" has solved the problem that the solidified product of high-temperature molten fly ash by high-temperature melting method is safe, can effectively remove dioxins, and can be used as resources, but the treatment energy consumption is high, and the gas generated in the treatment process needs to be treated twice, resulting in the simple fly ash melting treatment The operating cost is higher than that of cement solidification. After further searching, it was found that the "three-phase three-dimensional electrode method for treating heavy metals in fly ash from waste incineration" disclosed by application number "CN207288332U" The "device" has effectively solved the problem that heavy metals are easy to volatilize under high temperature in the melting method, causing secondary pollution, through the specific technical structure setting. The chemical leaching method has a better effect, but it mainly relies on acid to extract heavy metals in fly ash. Due to the extremely high alkaline oxide content of fly ash, the amount of acid extractant used is huge, and the processing cost is high. The electric removal technology also has many defects, such as long repair cycle, low heavy metal removal rate and other technical disadvantages. However, in actual use, a device for removing heavy metals from domestic waste fly ash with a similar structure still has many defects, such as: during the incineration process of garbage, the fly ash generated is enriched with dioxins, heavy metals and other pollutants, which are extremely harmful to the human body. Most of the existing treatment methods are fly ash melting treatment technology, which has a complex process; large energy consumption and high processing cost, and the heavy metal pollutants after treatment are mixed with the fly ash, which is not convenient to separate and treat them, so it is necessary to design a device for removing heavy metals from domestic waste fly ash. Utility Model Content

[0003] The utility model aims to provide a device for removing heavy metals from fly ash of domestic garbage, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for removing heavy metals from fly ash of domestic waste, comprising a heavy metal separation cylinder, a rotating rod and a motor, wherein a rotating rod is rotatably installed inside the heavy metal separation cylinder, a motor is fixedly installed on one side of the top of the heavy metal separation cylinder, bevel gears that cooperate with each other are fixedly installed on the top of the heavy metal separation cylinder and the output end of the motor, a stirring paddle is fixedly connected to the outside of the rotating rod, a collecting box is movably installed on the bottom of the heavy metal separation cylinder, a separation net is slidably installed on the other side of the collecting box, a groove is provided on one side of the inner wall of the collecting box, and a limit block fixed to the separation net is movably installed inside the groove.

[0005] First, the staff will pass the separation net through the collection box, and then the limit block will slide into the groove to install the separation net inside the collection box. Then the staff will add fly ash, water and heavy metal capture agent into the heavy metal separation cylinder. The components of the heavy metal capture agent are activated carbon, activated calcium silicate, activated wollastonite, activated trihydrosilicate, etc. It has high adsorption performance and can effectively adsorb heavy metal ions to cause them to solidify and precipitate. Then the motor drives the stirring paddle to rotate through the rotating rod and the bevel gear, so that the stirring paddle stirs and mixes the fly ash, water and heavy metal capture agent, thereby solidifying and precipitating the heavy metals from the fly ash solution, and the fly ash solution inside the heavy metal separation cylinder is discharged into the collection box. The heavy metal solids fall on the top of the separation net, and the fly ash solution falls to the bottom of the collection box, so that the heavy metals are separated from the fly ash solution for the next step of treatment, thereby improving the heavy metal removal efficiency of the device.

[0006] Preferably, a feed inlet is fixedly installed through the other side of the top of the heavy metal separation cylinder, and an observation window is embedded in the front end of the heavy metal separation cylinder. The staff can add fly ash, water and heavy metal capture agent into the heavy metal separation cylinder through the feed inlet, and then observe the precipitation of heavy metals through the observation window, which improves the practicality of the device.

[0007] Preferably, the inside of the stirring paddle is evenly penetrated with drainage holes, and a protective shell is fixedly installed on the top of the heavy metal separation cylinder on the outside of the bevel gear. When the stirring paddle stirs the fly ash solution, the fly ash solution is drained through the drainage holes, so that the fly ash solution and the heavy metal capture agent are mixed more fully, and the protective shell protects the bevel gear.

[0008] Preferably, a discharge port is fixedly installed through the bottom of the heavy metal separation cylinder, and a valve is fixedly connected to the outside of the discharge port. When the heavy metal precipitation is completed, the staff opens the valve to discharge the heavy metal solids and fly ash solution through the discharge port, thereby improving the convenience of operation of the device.

[0009] Preferably, support columns are fixedly installed at the front end, the rear end and both sides of the heavy metal separation cylinder, and support legs are fixedly connected to the bottom of the support columns. The support columns and the support legs support the heavy metal separation cylinder, making the heavy metal separation cylinder more stably placed.

[0010] Preferably, a guide plate is fixedly installed at the bottom of the inner wall of the heavy metal separation cylinder, and a discharge port is opened inside the guide plate. When the inside of the heavy metal separation cylinder is discharged, the guide plate guides and discharges the fly ash solution and the metal precipitate through the discharge port, thereby avoiding residue inside the heavy metal separation cylinder.

[0011] Preferably, a sealing ring is sleeved on the outer side of the other side of the separation net, and the outer side of the sealing ring contacts the opening on the other side of the collection box. A pull ring is fixedly installed on the other side of the separation net. When the separation net is slid into the collection box, the sealing ring is in close contact with the opening on the other side of the collection box, making the installation of the separation net more sealed. The pull ring makes it convenient for the staff to pull the separation net out for cleaning, thereby improving the practicality of the device.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting up a rotating rod, a motor, a bevel gear and a stirring paddle, the staff adds the fly ash after incineration into the heavy metal separation cylinder, and then adds the heavy metal capture agent and water into the heavy metal separation cylinder. The motor drives the stirring paddle to rotate through the rotating rod and the bevel gear, so that the stirring paddle stirs and mixes the fly ash, water and heavy metal capture agent, so that the heavy metals are solidified and precipitated from the fly ash solution, which reduces the cost and improves the heavy metal removal efficiency.

[0014] 2. By providing a collecting box, a separation net, a groove and a limit block, the limit block slides into the groove to allow the separation net to be installed inside the collecting box, the fly ash solution inside the heavy metal separation cylinder is discharged into the collecting box, the heavy metal solids fall on the top of the separation net, and the fly ash solution falls into the bottom of the collecting box, so that the heavy metals are separated from the fly ash solution for the next step of processing, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0016] Figure 2 This is a front view structural diagram of a heavy metal separation cylinder of the utility model;

[0017] Figure 3 It is a partial front view cross-sectional structural diagram of the collection box of the utility model;

[0018] Figure 4 This is a schematic diagram of the side structure of the collection box of the utility model;

[0019] Figure 5 It is a schematic diagram of the top view structure of the guide plate of the utility model.

[0020] In the figure: 1. heavy metal separation cylinder; 101. rotating rod; 102. motor; 103. bevel gear; 104. stirring paddle; 105. collecting box; 106. separation net; 107. groove; 108. limit block; 109. inlet; 2. observation window; 201. drainage hole; 202. protective shell; 203. discharge port; 204. valve; 205. support column; 206. support foot; 207. guide plate; 208. discharge port; 209. sealing ring; 3. pull ring. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model proposes a device for removing heavy metals from fly ash of domestic waste, comprising a heavy metal separation cylinder 1, a rotating rod 101 and a motor 102, wherein the rotating rod 101 is rotatably installed inside the heavy metal separation cylinder 1, the motor 102 is fixedly installed on one side of the top of the heavy metal separation cylinder 1, a bevel gear 103 that cooperates with each other is fixedly installed on the top of the heavy metal separation cylinder 1 and the output end of the motor 102, a stirring paddle 104 is fixedly connected to the outside of the rotating rod 101, a collecting box 105 is movably installed on the bottom of the heavy metal separation cylinder 1, a separating net 106 is slidably installed on the other side of the collecting box 105, and a groove 107 is provided on one side of the inner wall of the collecting box 105;

[0024] A limit block 108 fixed to the separation net 106 is movably installed inside the groove 107, a feed port 109 is fixedly installed through the other side of the top of the heavy metal separation cylinder 1, an observation window 2 is embedded in the front end of the heavy metal separation cylinder 1, and drainage holes 201 are evenly penetrated inside the stirring paddle 104. A protective shell 202 is fixedly installed on the outside of the bevel gear 103 at the top of the heavy metal separation cylinder 1, and a discharge port 203 is fixedly installed through the bottom of the heavy metal separation cylinder 1, and a valve 204 is fixedly connected to the outside of the discharge port 203.

[0025] The working principle of the device for removing heavy metals from fly ash of domestic waste based on Example 1 is as follows: first, the staff member passes the separation net 106 through the collection box 105, and then the limit block 108 slides into the inside of the groove 107 to install the separation net 106 inside the collection box 105, and then the staff member adds fly ash, water and heavy metal capture agent into the inside of the heavy metal separation cylinder 1 through the feed port 109. The heavy metal capture agent is composed of activated carbon, activated calcium silicate, activated wollastonite, activated trihydrogen silicate, etc., and has high adsorption performance, and can effectively adsorb heavy metal ions to cause them to coagulate and precipitate;

[0026] Then the motor 102 drives the stirring paddle 104 to rotate through the rotating rod 101 and the bevel gear 103, so that the stirring paddle 104 stirs and mixes the fly ash, water and heavy metal capture agent, and the drainage hole 201 drains the solution to make it mixed more fully, and then the heavy metal solidifies and precipitates from the fly ash solution. After the staff observes through the observation window 2 that the heavy metal precipitation is completed, the valve 204 is opened, and the fly ash solution and heavy metal precipitate inside the heavy metal separation cylinder 1 are discharged into the interior of the collecting box 105 through the supporting column 205. The heavy metal solid falls on the top of the separation net 106, and the fly ash solution falls to the bottom of the collecting box 105, so that the heavy metal and the fly ash solution are separated for the next step of treatment, thereby improving the heavy metal removal efficiency of the device.

[0027] Embodiment 2

[0028] like Figure 1 , Figure 4 and Figure 5 As shown, the utility model proposes a device for removing heavy metals from fly ash of domestic waste. Compared with the first embodiment, this embodiment also includes: support columns 205 are fixedly installed on the front end, rear end and both sides of the heavy metal separation cylinder 1, and the bottom of the support column 205 is fixedly connected with a support foot 206, and a guide plate 207 is fixedly installed on the bottom of the inner wall of the heavy metal separation cylinder 1, and a discharge port 208 is opened through the inside of the guide plate 207. A sealing ring 209 is sleeved on the outer side of the other side of the separation net 106, and the outer side of the sealing ring 209 contacts with the opening on the other side of the collection box 105, and a pull ring 3 is fixedly installed on the other side of the separation net 106.

[0029] In this embodiment, Figure 1 and Figure 5 As shown, the support column 205 and the support foot 206 support the heavy metal separation cylinder 1, so that the heavy metal separation cylinder 1 is placed more stably. When the inside of the heavy metal separation cylinder 1 is discharged, the guide plate 207 guides and discharges the fly ash solution and the metal precipitate through the discharge port 208, thereby avoiding the residue inside the heavy metal separation cylinder 1. Figure 4As shown, when the separation net 106 slides into and is installed inside the collection box 105, the sealing ring 209 is in close contact with the opening on the other side of the collection box 105, making the separation net 106 more sealed. The pull ring 3 makes it convenient for the staff to pull the separation net 106 to take it out for cleaning, thereby improving the practicality of the device.

[0030] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A device for removing heavy metals from fly ash of domestic waste, comprising a heavy metal separation cylinder (1), a rotating rod (101) and a motor (102), characterized in that: A rotating rod (101) is rotatably mounted inside the heavy metal separation cylinder (1), a motor (102) is fixedly mounted on one side of the top of the heavy metal separation cylinder (1), a bevel gear (103) that cooperates with each other is fixedly mounted on the top of the heavy metal separation cylinder (1) and the output end of the motor (102), a stirring paddle (104) is fixedly connected to the outside of the rotating rod (101), a collecting box (105) is movably mounted on the bottom of the heavy metal separation cylinder (1), a separating net (106) is slidably mounted on the other side of the collecting box (105), a groove (107) is provided on one side of the inner wall of the collecting box (105), and a limiting block (108) fixed to the separating net (106) is movably mounted inside the groove (107).

2. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: A feed inlet (109) is fixedly installed through the other side of the top of the heavy metal separation cylinder (1), and an observation window (2) is embedded in the front end of the heavy metal separation cylinder (1).

3. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: The interior of the stirring paddle (104) is evenly penetrated with drainage holes (201), and a protective shell (202) is fixedly installed on the top of the heavy metal separation cylinder (1) on the outer side of the bevel gear (103).

4. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: A discharge port (203) is fixedly installed through the bottom of the heavy metal separation cylinder (1), and a valve (204) is fixedly connected to the outside of the discharge port (203).

5. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: Support columns (205) are fixedly installed at the front end, the rear end and both sides of the heavy metal separation cylinder (1), and support feet (206) are fixedly connected to the bottom of the support columns (205).

6. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: A guide plate (207) is fixedly mounted on the bottom of the inner wall of the heavy metal separation cylinder (1), and a discharge port (208) is provided through the inside of the guide plate (207).

7. The device for removing heavy metals from fly ash of domestic waste according to claim 1, characterized in that: A sealing ring (209) is sleeved and installed on the outer side of the other side of the separation net (106), and the outer side of the sealing ring (209) contacts the opening on the other side of the collection box (105). A pull ring (3) is fixedly installed on the other side of the separation net (106).

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