An arsenic-containing sludge solidification device

Abstract

The utility model relates to sludge treatment technical field, specifically to a kind of solidification device of arsenic-containing sludge.The solidification device of arsenic-containing sludge of the present application, by being equipped with mixing cavity in casing, and the discharge cavity being communicated with mixing cavity, mixing cavity side part is equipped with solidifying agent feed pipe, solidifying agent feed pipe is equipped with the adjusting piece for controlling solidifying agent addition amount, so that the solidifying agent in the storage tank inside can be quantitatively input to the inside of mixing cavity;Casing top is equipped with driving motor, and the output shaft of driving motor is fixedly connected with the first rotating rod that extends into mixing cavity, and the first rotating rod is fixedly connected with several connecting rods, and the end of several connecting rods is equipped with the helical stirring blade that is connected with each other;Discharge cavity is equipped with spiral auger, and one end of spiral auger rotatably extends out of discharge cavity and is connected with driving element, and driving element is drivingly connected with the first rotating rod, so that arsenic-containing sludge can be in contact with solidifying agent sufficiently, to improve the solidification efficiency of arsenic-containing sludge.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to a solidification device for arsenic-containing sludge. Background Technology

[0002] Arsenic and arsenic-containing compounds are highly toxic, with As(III) being far more toxic than As(V), capable of damaging the liver, kidneys, and nervous system. Once arsenic pollution forms in the environment, it is difficult to eliminate, especially water and soil pollution. Ultimately, it can enter the human body through the food chain or surface and groundwater, endangering human health and causing frequent cases of poisoning in humans and animals. The pollution and harm caused by arsenic slag generated during smelting and arsenic-containing waste residue from wastewater and waste acid treatment has not yet been completely eradicated. In some areas, arsenic-containing waste residue is indiscriminately dumped in the open, posing a significant threat to the environment. Therefore, arsenic-containing sludge has become an urgent problem to be solved.

[0003] Currently, there are several methods for treating arsenic-containing sludge, including wet treatment, pyrometallurgical treatment, and solidification treatment. Wet treatment has low energy consumption, low pollution, and high efficiency, but the operation steps are cumbersome; pyrometallurgical treatment has a simple process, stable production, and high efficiency, but it can produce secondary pollution. Therefore, solidification is the most commonly used method for treating arsenic-containing sludge.

[0004] For example, patent number CN213202762U discloses a sludge solidification device, including a shell, a storage tank fixedly installed on the top inner wall of the shell, a spiral auger rotatably installed inside the shell, two bevel gears rotatably installed on the outside of the shell, the two bevel gears meshing with each other, a distribution wheel rotatably installed inside the storage tank, multiple distribution plates fixedly installed on the outside of the distribution wheel, and pulleys rotatably installed on the outside of the shell and the rear side of the storage tank, with the same belt drivingly connected to the two pulleys. However, the mixing and transmission of this device are located in the same cavity, which has problems such as uneven mixing of sludge and solidifying agent. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art and to provide a solidification device for arsenic-containing sludge.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A solidification device for arsenic-containing sludge includes a housing, a mixing chamber and a discharge chamber connected to the mixing chamber, a solidifying agent inlet pipe on the side of the mixing chamber, and an adjusting component for controlling the amount of solidifying agent added installed on the solidifying agent inlet pipe; a drive motor is installed on the top of the housing, and a first rotating rod extending into the mixing chamber is fixedly connected to the output shaft of the drive motor, and several connecting rods are fixedly connected to the first rotating rod, with interconnected spiral stirring blades installed at the ends of the several connecting rods; a spiral auger is installed on the discharge chamber, and one end of the spiral auger rotatably extends out of the discharge chamber and is connected to a driving component, which is drively connected to the first rotating rod.

[0007] Furthermore, a discharge pipe is connected between the mixing chamber and the discharge chamber, and the discharge pipe is equipped with a valve for controlling the discharge of the mixed material.

[0008] Furthermore, the driving component includes a driven gear fixedly connected to the end of the auger, a main gear meshing with the driven gear, a second rotating rod fixedly connected to the main gear, and the second rotating rod being drivenly connected to the first rotating rod via a belt transmission component.

[0009] Furthermore, the belt transmission component includes a driven wheel mounted on the top of the second rotating rod, the driven wheel being connected to a driving wheel via a belt, and the driving wheel being fixedly connected to the first rotating rod.

[0010] Furthermore, support blocks for supporting the second rotating rod are provided on both the upper and lower sides of the casing, and the support blocks are rotatably fitted onto the surface of the second rotating rod.

[0011] Furthermore, the curing agent feed pipe is L-shaped.

[0012] Furthermore, the adjusting component includes a push rod located at the bottom of the curing agent feed pipe and extending retractably into the inner cavity of the curing agent feed pipe, wherein a push plate is fixedly connected to the end of the push rod located in the inner cavity of the curing agent feed pipe.

[0013] Furthermore, a cylinder is fixedly connected to the right end of the push rod, and a sealing element adapted to the push rod is provided on the right side of the inner wall of the curing agent feed pipe.

[0014] Furthermore, the connecting rod has a dispersion hole, and the connecting rod is welded to the spiral stirring blade and the first rotating rod respectively.

[0015] Furthermore, it also includes a heat recovery component, which includes an exhaust pipe installed on the side of the housing. A heat storage tank is connected to the exhaust pipe via a pipe. The output end of the heat storage tank is connected to a curing molding component. A molding die is installed inside the curing molding component. The molding die is connected to the discharge port of the discharge chamber via a connecting pipe.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. This application installs an adjusting device on the curing agent feed pipe to control the amount of curing agent added, thereby enabling the curing agent inside the storage tank to be quantitatively input into the mixing chamber; through the cooperation of the drive motor, rotating shaft, first rotating rod, connecting rod, and spiral stirring blade, the arsenic-containing sludge can be in full contact with the curing agent, thereby accelerating the curing efficiency of the arsenic-containing sludge.

[0018] 2. This application uses a spiral auger in the discharge chamber to continuously transport the mixture of sludge and solidifying agent to the solidification mold, effectively avoiding blockage at the discharge port. Attached Figure Description

[0019] Figure 1 This is a front view of the solidification device for arsenic-containing sludge in a preferred embodiment of the present invention;

[0020] Figure 2 This is a front sectional view of the solidification device for arsenic-containing sludge in a preferred embodiment of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a right view of the solidification device for arsenic-containing sludge in a preferred embodiment of the present invention.

[0023] Reference numerals: 1. Casing; 2. Mixing chamber; 3. Discharge chamber; 4. Curing agent feed pipe; 5. Adjusting component; 501. Push rod; 502. Push plate; 503. Cylinder; 6. Drive motor; 7. First rotating rod; 8. Connecting rod; 9. Spiral stirring blade; 10. Spiral auger; 11. Drive component; 1101. Driven gear; 1102. Main gear; 1103. Second rotating rod; 12. Discharge pipe; 13. Belt transmission component; 1301. Driven wheel; 1302. Belt; 1303. Drive wheel; 14. Valve; 15. Dispersion hole; 16. Sludge inlet; 17. Heat recovery component; 1701. Air outlet pipe; 1702. Heat storage tank; 18. Curing and molding component; 19. Support block. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0025] Reference Figures 1-4 As shown in the preferred embodiment of this utility model, a solidification device for arsenic-containing sludge includes a housing 1. The housing 1 contains a mixing chamber 2 and a discharge chamber 3 connected to the mixing chamber 1. A solidifying agent inlet pipe 4 is provided on the side of the mixing chamber 2. An adjusting component 5 for controlling the amount of solidifying agent added is installed on the solidifying agent inlet pipe 4, allowing the solidifying agent in the storage tank to be quantitatively input into the mixing chamber. A drive motor 6 is installed on the top of the housing 1. A first rotating rod 7 extending into the mixing chamber is fixedly connected to the output shaft of the drive motor 6. Several connecting rods 8 are fixedly connected to the first rotating rod 7, and spiral stirring blades 9 are connected to the ends of the connecting rods 8. A spiral auger 10 is installed on the discharge chamber 3. One end of the spiral auger 10 rotatably extends out of the discharge chamber 3 and is connected to a driving component 11. The driving component 11 is connected to the first rotating rod 7, allowing the arsenic-containing sludge to fully contact the solidifying agent, thereby improving the solidification efficiency of the arsenic-containing sludge and effectively preventing blockage at the discharge port.

[0026] As a preferred embodiment of this utility model, it may also have the following additional technical features: a discharge pipe 12 is connected between the mixing chamber 2 and the discharge chamber 3, and the discharge pipe 12 is provided with a valve 14 for controlling the discharge of the mixed material; and a sludge inlet 16 is provided on the top of the casing 1 for easy addition of sludge, and the sludge inlet 16 is funnel-shaped. This facilitates the control of sludge discharge, allowing the sludge to be fully and evenly mixed with the solidifying agent in the mixing chamber.

[0027] In this embodiment, the driving component 11 includes a driven gear 1101 fixedly connected to the end of the auger 10. A main gear 1102 is meshed on the driven gear 1101. A second rotating rod 1103 is fixedly connected to the main gear 1102. The second rotating rod 1103 is connected to the first rotating rod 7 via a belt transmission component 13. The belt transmission component 13 includes a driven wheel 1301 mounted on the top of the second rotating rod 1103. The driven wheel 1301 is connected to a driving wheel 1303 via a belt 1302. The driving wheel 1303 is fixedly connected to the first rotating rod 7. Therefore, by starting the drive motor 6, the first rotating rod 7 is driven to rotate, which in turn drives the drive wheel 1303 on it to rotate. This, in turn, drives the driven wheel 1301 to rotate under the action of the belt 1302, which in turn drives the second rotating rod 1103 on the driven wheel 1301 to rotate. When the second rotating rod 1103 rotates, it drives the main gear 1102 on its other end to rotate, which in turn drives the auger 10 to rotate through the rotation of the driven gear 1101. Thus, the drive motor 6 drives the first rotating rod 7 to rotate, which in turn drives the auger 10 to rotate, thereby improving the utilization rate of the motor and reducing the number of motors used.

[0028] In this embodiment, support blocks 19 for supporting the second rotating rod 1103 are provided on the upper and lower sides of the side of the housing 1. The support blocks 19 are rotatably sleeved on the surface of the second rotating rod 1103, thereby enhancing the stability of the rotation of the second rotating rod 1103.

[0029] In this embodiment, the curing agent feed pipe 4 is L-shaped; the adjusting component 5 includes a push rod 501 located at the bottom of the curing agent feed pipe 4 and extending retractably into the inner cavity of the curing agent feed pipe 4. A push plate 502 is fixedly connected to the end of the push rod 501 located within the inner cavity of the curing agent feed pipe 4. A cylinder 503 is fixedly connected to the right end of the push rod 501. A sealing element adapted to the push rod 501 is provided on the right side of the inner wall of the curing agent feed pipe 4. This sealing element can be a rubber sealing ring, but is not limited to it. Therefore, when adding curing agent in batches, after each batch of curing agent is added, the cylinder 503 is activated, pushing and pulling the push rod 501 to move, which in turn moves the push plate 502. This allows the push plate 502 to not only quantitatively input the curing agent into the mixing chamber, but also to clear any curing agent blockage inside the curing agent feed pipe 4, facilitating the addition of curing agent into the mixing chamber.

[0030] In this embodiment, the connecting rod 8 has a dispersion hole 16, and the connecting rod 8 is welded to the spiral stirring blade 9 and the first rotating rod 7 respectively. This improves the stirring effect on the material.

[0031] In this embodiment, a heat recovery component 17 is also included. The heat recovery component 17 includes an exhaust pipe 1701 installed on the side of the housing 1. A heat storage tank 1702 is connected to the exhaust pipe 1701 via a pipe. The output end of the heat storage tank 1702 is connected to a curing molding component 18. A molding die is installed inside the curing molding component. The molding die is connected to the discharge port of the discharge chamber 3 via a connecting pipe, thereby realizing the recovery of heat during the chemical reaction between sludge and solidifying agent and transferring the heat to the molding die to accelerate the solidification speed of the sludge. The curing molding component containing the molding die is existing equipment and can be directly purchased from the market, and will not be described in detail in this application.

[0032] The working principle of this utility model is as follows: In use, arsenic-containing sludge is injected into the mixing chamber 2 through the sludge inlet 16, and then a curing agent is injected into the mixing chamber 2 through the curing agent inlet pipe 4. The drive motor 6 is started to drive the first rotating rod 7 to rotate. The sludge and curing agent in the mixing chamber 2 are stirred by the spiral stirring blades. After stirring, the sludge is discharged into the discharge chamber 3 through the discharge pipe 12. Then, the sludge is discharged through the spiral auger 10 and discharged into the curing molding mold for curing. After curing, it is naturally cured for 7-15 days, thereby obtaining a solidified body that meets the landfill standards and realizing the curing treatment of arsenic-containing sludge.

[0033] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0034] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A solidification device for arsenic-containing sludge, characterized in that: The device includes a housing, within which a mixing chamber and a discharge chamber connected to the mixing chamber are provided. A curing agent inlet pipe is provided on the side of the mixing chamber, and an adjusting component for controlling the amount of curing agent added is installed on the curing agent inlet pipe. A drive motor is installed on the top of the housing, and a first rotating rod extending into the mixing chamber is fixedly connected to the output shaft of the drive motor. Several connecting rods are fixedly connected to the first rotating rod, and spiral stirring blades connected to each other are installed at the ends of the several connecting rods. A spiral auger is installed on the discharge chamber, and one end of the spiral auger rotatably extends out of the discharge chamber and is connected to a driving component. The driving component is drivenly connected to the first rotating rod.

2. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: The mixing chamber and the discharge chamber are connected by a discharge pipe, and the discharge pipe is equipped with a valve for controlling the discharge of the mixed material.

3. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: The driving component includes a driven gear fixedly connected to the end of the auger, a main gear meshing with the driven gear, a second rotating rod fixedly connected to the main gear, and the second rotating rod being drivenly connected to the first rotating rod via a belt transmission component.

4. The solidification device for arsenic-containing sludge according to claim 3, characterized in that: The belt transmission component includes a driven wheel mounted on the top of the second rotating rod. The driven wheel is connected to a driving wheel via a belt, and the driving wheel is fixedly connected to the first rotating rod.

5. The solidification device for arsenic-containing sludge according to claim 3, characterized in that: Support blocks for supporting the second rotating rod are provided on both the upper and lower sides of the casing, and the support blocks are rotatably fitted onto the surface of the second rotating rod.

6. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: The curing agent feed pipe is L-shaped.

7. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: The adjusting component includes a push rod located at the bottom of the curing agent inlet pipe and extending retractably into the inner cavity of the curing agent inlet pipe. A push plate is fixedly connected to the end of the push rod located in the inner cavity of the curing agent inlet pipe.

8. The solidification device for arsenic-containing sludge according to claim 7, characterized in that: A cylinder is fixedly connected to the right end of the push rod, and a sealing element adapted to the push rod is provided on the right side of the inner wall of the curing agent feed pipe.

9. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: The connecting rod has a dispersion hole, and the connecting rod is welded to the spiral stirring blade and the first rotating rod respectively.

10. The solidification device for arsenic-containing sludge according to claim 1, characterized in that: It also includes a heat recovery component, which includes an exhaust pipe installed on the side of the housing. A heat storage tank is connected to the exhaust pipe via a pipe. The output end of the heat storage tank is connected to a curing molding component. A molding die is installed inside the curing molding component. The molding die is connected to the discharge port of the discharge chamber via a connecting pipe.

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