Chemical contaminated soil dosing and conditioning device

Abstract

The application relates to the technical field of soil remediation, and discloses a chemical-polluted soil dosing and conditioning device, which comprises a stirring box, a plurality of dosing mechanisms are installed on the top outer wall of the stirring box, the dosing mechanisms comprise feeding hoppers, metering pumps and electromagnetic valves, the plurality of feeding hoppers are arranged on the top of the stirring box and are communicated with the inside of the stirring box, the metering pumps and the electromagnetic valves are sequentially installed on the outer wall of the feeding hoppers from top to bottom, a stirring mechanism is installed in the stirring box, and the stirring mechanism comprises a spiral belt and a spiral stirring rod.In the utility model, the metering pump and the electromagnetic valve in the dosing mechanism work cooperatively, the metering pump can accurately control the medicine conveying amount, the electromagnetic valve assists in controlling the medicine circulation, the metering pump and the electromagnetic valve are electrically connected with external control equipment, automatic dosing can be realized, the medicine can be accurately added according to preset parameters, and the treatment effect of the polluted soil is not affected by inaccurate dosing.

Description

Technical Field

[0001] This application relates to the field of soil remediation technology, and in particular to a chemical dosing and preparation device for chemically contaminated soil. Background Technology

[0002] With the rapid development of the chemical industry, the problem of chemically contaminated soil has become increasingly prominent, posing a serious threat to the ecological environment and human health. In the remediation of chemically contaminated soil, it is often necessary to add chemicals to the contaminated soil for treatment, in order to reduce the concentration of pollutants in the soil and improve soil properties.

[0003] Currently, existing chemical contaminated soil dosing and preparation devices have some shortcomings in use. On the one hand, it is difficult to accurately control the amount of reagent added during the dosing process, resulting in low dosing precision and affecting the treatment effect of contaminated soil. On the other hand, the mixing of soil and reagent is not uniform enough, so that some soil cannot fully react with the reagent, reducing the treatment efficiency. Therefore, a chemical contaminated soil dosing and preparation device is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a chemical contaminated soil dosing and preparation device to solve the problems mentioned in the background art.

[0005] The chemical contaminated soil dosing and preparation device provided in this application adopts the following technical solution:

[0006] A chemical contaminated soil dosing and preparation device includes a mixing tank. Multiple dosing mechanisms are installed on the top outer wall of the mixing tank. Each dosing mechanism includes a feeding hopper, a metering pump, and a solenoid valve. The multiple feeding hoppers are located on the top of the mixing tank and are connected to its interior. The metering pump and the solenoid valve are installed sequentially from top to bottom on the outer wall of the feeding hopper.

[0007] The mixing tank is equipped with a mixing mechanism, which includes a spiral belt and a spiral mixing rod. The spiral belt has the opposite spiral direction to the support.

[0008] Preferably, the inner wall of the top center of the mixing tank is rotatably connected to a shaft cylinder via a bearing. A connecting arm one is fixedly connected to the bottom end of the shaft cylinder. Scrapers are fixedly connected to the outer walls of both ends of the connecting arm one. A connecting arm two is fixedly connected to the bottom ends of the two scrapers. The connecting arm one, the scrapers, and the connecting arm two form a frame structure. The outer walls of the connecting arm one and the connecting arm two are fixedly connected to the two ends of the two spiral belts.

[0009] Preferably, the inner wall of the shaft is rotatably connected to a rotating shaft, the top end of which passes through the shaft and extends out of the mixing tank, and its bottom end is rotatably connected to the outer wall of the middle section of the connecting arm two. The spiral stirring rod is fixedly connected to the outer wall of the rotating shaft, and the spiral stirring rod is located between the connecting arm one and the connecting arm two.

[0010] Preferably, a bracket is fixedly connected to the outer wall of the top middle of the mixing tank, a bevel gear one is rotatably connected to the inner wall of the bottom of the bracket, a bevel gear two is rotatably connected to the inner wall of the top, the top end of the shaft is fixedly connected to the axis of the bevel gear one, and the top end of the rotating shaft passes through the bevel gear one and is fixedly connected to the axis of the bevel gear two.

[0011] Preferably, a drive motor is fixedly installed on one side of the outer wall of the bracket, and the output shaft of the drive motor passes through the bracket and is fixedly connected to a bevel gear three. The bevel gear three meshes with bevel gear one and bevel gear two respectively, and the bevel gear three is located between bevel gear one and bevel gear two.

[0012] Preferably, the bottom outer wall of the mixing tank is fixedly connected with multiple support legs, and the bottom outer wall of the mixing tank is provided with a medicine outlet, which is located between the multiple support legs.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This problem is solved by the coordinated operation of a metering pump and a solenoid valve in the dosing mechanism. The metering pump can accurately control the amount of reagent delivered, while the solenoid valve assists in controlling the flow of reagent. Both are electrically connected to external control equipment, enabling automated dosing. Reagents are added precisely according to preset parameters, avoiding the impact of inaccurate dosing on the treatment effect of contaminated soil.

[0015] 2. The mixing mechanism uses spiral belts and spiral stirring rods with opposite spiral directions, which enables the material to convect during operation. At the same time, the scraper prevents the material from accumulating on the inner wall of the mixing tank, allowing the soil and the agent to fully contact and react, thus improving the treatment efficiency. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0017] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the application;

[0018] Figure 3 This is an internal schematic diagram of an embodiment of the application;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. Mixing tank; 2. Dosing mechanism; 201. Feed hopper; 202. Metering pump; 203. Solenoid valve; 3. Support leg; 4. Discharge port; 5. Shaft; 6. Connecting arm one; 7. Scraper; 8. Connecting arm two; 9. Spiral belt; 10. Rotating shaft; 11. Bracket; 12. Bevel gear one; 13. Bevel gear two; 14. Bevel gear three; 15. Drive motor; 16. Spiral stirring rod. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a chemical dosing and preparation device for soil contaminated by chemicals. (Refer to...) Figure 1-4 A chemical contaminated soil dosing and preparation device includes a mixing tank 1, which is a hollow box structure with an open top. Multiple dosing mechanisms 2 are installed on the outer wall of the top of the mixing tank 1. The number of dosing mechanisms 2 can be set according to actual dosing needs; in this embodiment, three mechanisms are provided. Each dosing mechanism 2 includes a feeding hopper 201, a metering pump 202, and a solenoid valve 203. Multiple feeding hoppers 201 are located on the top of the mixing tank 1 and are connected to the interior of the mixing tank 1. The bottom of the feeding hoppers 201 extends 5-10 cm into the mixing tank 1 to ensure that the agent can accurately fall into the mixing tank 1. The metering pump 202 and the solenoid valve 203 are installed sequentially from top to bottom on the outer wall of the feeding hopper 201. The metering pump 202 is a J-MXL miniature metering pump 202, which can accurately control the amount of agent delivered. The solenoid valve 203 is a 2W-160-15 solenoid valve used to control the opening and closing of the feeding hopper 201.

[0023] The mixing tank 1 is equipped with a mixing mechanism, which includes a spiral belt 9 and a spiral stirring rod 16. The spiral directions of the spiral belt 9 and the spiral stirring rod 16 are opposite. This reverse spiral structure can make the material in the mixing tank 1 form convection and improve the mixing uniformity.

[0024] A shaft cylinder 5 is rotatably connected to the inner wall of the top center of the mixing tank 1 via a bearing. The shaft cylinder 5 is a hollow cylindrical structure with open ends. A connecting arm 6 is welded to its bottom end. The connecting arm 6 is a cuboid rod structure. Scrapers 7 are welded to the outer walls of both ends of the connecting arm 6. The scrapers 7 are rectangular plates with their outer walls in contact with the inner wall of the mixing tank 1. The gap between the scrapers is no more than 2mm, which can prevent the material from accumulating on the inner wall of the mixing tank 1. A connecting arm 8 is welded to the bottom end of the two scrapers 7. The connecting arm 8 has the same structure as the connecting arm 6 and is arranged in parallel. The connecting arm 6, scraper 7 and connecting arm 8 form a frame structure. The two ends of the two spiral bands 9 are welded to the outer walls of the connecting arm 6 and connecting arm 8, respectively. The width of the spiral bands 9 is 5-8cm, and the distance between its edge and the inner wall of the mixing tank 1 is 3-5cm.

[0025] A rotating shaft 10 is rotatably connected to the inner wall of the shaft cylinder 5. The rotating shaft 10 is a solid cylindrical structure. Its top end passes through the shaft cylinder 5 and extends out of the outside of the mixing tank 1. Its bottom end is rotatably connected to the middle section of the outer wall of the connecting arm 2 8 through a bearing. The spiral stirring rod 16 is welded to the outer wall of the rotating shaft 10, and the spiral stirring rod 16 is located between the connecting arm 1 6 and the connecting arm 2 8.

[0026] A support 11 is welded to the outer wall of the top middle of the mixing tank 1. The support 11 is a U-shaped frame structure. The bottom inner wall of the support 11 is rotatably connected to a bevel gear 12 via a bearing, and the top inner wall is rotatably connected to a bevel gear 13 via a bearing. The top end of the shaft cylinder 5 is fixed to the axis of the bevel gear 12 via a key. The top end of the rotating shaft 10 passes through the bevel gear 12 and is fixed to the axis of the bevel gear 13 via a key. The bevel gear 12 and the bevel gear 13 have the same module and are both compatible with the bevel gear 14.

[0027] A drive motor 15 is fixedly installed on one side of the outer wall of the bracket 11 by bolts. The drive motor 15 is a three-phase asynchronous motor of model Y132M-4. The end of its output shaft passes through the bracket 11 and is fixed with a bevel gear 14 by a key. The bevel gear 14 meshes with bevel gear 12 and bevel gear 23 respectively. The bevel gear 14 is located between bevel gear 12 and bevel gear 23, and the meshing clearance is 0.1-0.2mm.

[0028] The bottom outer wall of the mixing tank 1 is welded with multiple support legs 3. There are 4 support legs 3 distributed in a rectangular shape, and their height is 30-50cm. The bottom outer wall of the mixing tank 1 is provided with a medicine outlet 4. The medicine outlet 4 is a circular tubular structure with a diameter of 10-15cm. The medicine outlet 4 is located between the multiple support legs 3, and a manual valve of model Q11F-16 is installed on the medicine outlet 4 to control the discharge of materials.

[0029] The implementation principle of the chemical contaminated soil dosing and preparation device in this application embodiment is as follows: First, the feeding hopper 201 serves as a storage container for the agent, and the remediation agent to be added is pre-stored inside. When it is necessary to add the agent to the mixing tank 1, the electromagnetic valve 203 is opened first to provide a channel for the agent to flow. Subsequently, the metering pump 202 is started, and it draws the agent in the feeding hopper 201 according to the preset flow rate and time through electronic control.

[0030] The J-MXL miniature metering pump has high-precision flow control capabilities. Its internal piston or diaphragm structure generates a fixed volume of discharge through reciprocating motion. The dosage of medicine delivered in each reciprocating motion is fixed. By setting the working frequency and working time of the metering pump 202, the total delivery volume can be accurately calculated, thereby achieving quantitative addition. For example, if the rated flow rate of the metering pump 202 is 10L per hour, when 5L of medicine needs to be added, it is only necessary to let the metering pump 202 work for 0.5 hours.

[0031] During the drug delivery process, the solenoid valve 203 plays an auxiliary control role. When the metering pump 202 completes the preset dosage, the solenoid valve 203 closes, cutting off the drug delivery path and preventing the drug from continuing to flow out due to gravity or pipeline pressure, thus further ensuring the accuracy of the dosing. At the same time, if it is necessary to pause the dosing process, it can also be achieved by closing the solenoid valve 203.

[0032] It is worth noting that all components of the dosing mechanism 2 are electrically connected to an external control device, which can be a PLC controller (such as an S7-200SMART PLC). The operating status of the metering pump 202 and the solenoid valve 203 is regulated by this control device. The control device can receive dosing parameters input by the operator, such as the dosing amount and dosing time, and then send corresponding control signals to the metering pump 202 and the solenoid valve 203 to realize the automated dosing process.

[0033] The drive motor 15, model Y132M-4, is started. Drive motor 15 drives bevel gear 14 to rotate, which in turn drives bevel gears 12 and 13 to rotate in opposite directions. Bevel gear 12 drives shaft 5 to rotate, and shaft 5 drives spiral belt 9 to rotate via connecting arm 6, scraper 7, and connecting arm 8. Bevel gear 13 drives rotating shaft 10 to rotate, which in turn drives spiral stirring rod 16 to rotate. Because the spiral direction of spiral belt 9 and spiral stirring rod 16 is opposite, the material in mixing tank 1 forms an upward and downward convection. At the same time, scraper 7 scrapes the material off the inner wall of mixing tank 1 to prevent accumulation. The mixed material is discharged through outlet 4, which is equipped with a manual valve model Q11F-16.

[0034] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0035] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chemical contaminated soil dosing and preparation device, comprising a mixing tank (1), characterized in that: The top outer wall of the mixing tank (1) is equipped with multiple dosing mechanisms (2). Each dosing mechanism (2) includes a feeding hopper (201), a metering pump (202), and a solenoid valve (203). Multiple feeding hoppers (201) are located on the top of the mixing tank (1) and are connected to its interior. The metering pump (202) and the solenoid valve (203) are installed sequentially from top to bottom on the outer wall of the feeding hopper (201). The mixing tank (1) is equipped with a stirring mechanism, which includes a spiral belt (9) and a support (11). The spiral belt (9) and the spiral stirring rod (16) have opposite spiral directions.

2. The chemical contaminated soil dosing and preparation device according to claim 1, characterized in that: The top middle inner wall of the mixing tank (1) is rotatably connected to a shaft cylinder (5) via a bearing. The bottom end of the shaft cylinder (5) is fixedly connected to a connecting arm one (6). The outer walls of the two ends of the connecting arm one (6) are fixedly connected to scrapers (7). The bottom ends of the two scrapers (7) are fixedly connected to connecting arms two (8). The connecting arm one (6), scrapers (7) and connecting arms two (8) form a frame structure. The two ends of the two spiral belts (9) are fixedly connected to the outer walls of the connecting arm one (6) and the connecting arm two (8).

3. The chemical contaminated soil dosing and preparation device according to claim 2, characterized in that: The inner wall of the shaft cylinder (5) is rotatably connected to a rotating shaft (10). The top end of the rotating shaft (10) passes through the shaft cylinder (5) and extends out of the outside of the mixing tank (1). Its bottom end is rotatably connected to the middle section of the outer wall of the connecting arm two (8). The spiral stirring rod (16) is fixedly connected to the outer wall of the rotating shaft (10), and the spiral stirring rod (16) is located between the connecting arm one (6) and the connecting arm two (8).

4. The chemical contaminated soil dosing and preparation device according to claim 3, characterized in that: A bracket (11) is fixedly connected to the outer wall of the top middle of the mixing tank (1). A bevel gear one (12) is rotatably connected to the inner wall of the bottom of the bracket (11), and a bevel gear two (13) is rotatably connected to the inner wall of the top. The top of the shaft cylinder (5) is fixedly connected to the axis of the bevel gear one (12). The top of the rotating shaft (10) passes through the bevel gear one (12) and is fixedly connected to the axis of the bevel gear two (13).

5. The chemical contaminated soil dosing and preparation device according to claim 4, characterized in that: A drive motor (15) is fixedly installed on one side of the outer wall of the bracket (11). The output shaft of the drive motor (15) passes through the bracket (11) and is fixedly connected to a bevel gear three (14). The bevel gear three (14) meshes with bevel gear one (12) and bevel gear two (13) respectively. The bevel gear three (14) is located between bevel gear one (12) and bevel gear two (13).

6. The chemical contaminated soil dosing and preparation device according to claim 1, characterized in that: The bottom outer wall of the mixing tank (1) is fixedly connected with multiple support legs (3), and the bottom outer wall of the mixing tank (1) is provided with a medicine outlet (4), which is located between the multiple support legs (3).

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