Quantitative agent adding soil remediation device

Abstract

The utility model belongs to the technical field of contaminated soil remediation, and particularly relates to a quantitative medicament adding soil remediation device, which is characterized in that a feed port and a discharge pipe are respectively arranged on a casing, and a stirring component A is mounted in the casing; the mixing box is fixed to the machine shell, the stirring assembly B is installed in the mixing box, and a liquid outlet is formed in the mixing box; the plurality of stock solution boxes are respectively fixed on the machine shell above the mixing box, each stock solution box is respectively communicated with the mixing box through a hose, and a metering pump is arranged on the hose; a liquid guide frame is arranged below the mixing box, one side of the liquid guide frame is communicated with the interior of the machine shell, an opening and closing assembly used for opening or closing the liquid outlet is arranged on the liquid guide frame, and the opening and closing assembly is driven by an opening and closing power source to ascend and descend relative to the liquid guide frame. According to the utility model, the stock solution for preparing the remediation liquid is stored through the plurality of stock solution boxes, and the stock solution in each stock solution box is controlled to be quantitatively fed into the mixing box through the metering pump, so that the situation that the remediation liquid is fed too much or too little is avoided, and the remediation quality of soil is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of contaminated soil remediation, and particularly relates to a device for quantitatively adding agents to remediate soil. Background Art

[0002] When remediating petroleum hydrocarbon-contaminated soil, physical remediation, biological remediation, and chemical remediation can be used. Chemical remediation degrades or transforms pollutants in the contaminated soil through a series of chemical processes such as oxidation, reduction, and adsorption. For example, adding hydrogen peroxide, potassium permanganate, etc. to promote the oxidation and decomposition of petroleum hydrocarbons, or iron sulfide, etc. to reduce the pollutants in the soil to a more stable form. For example, the Chinese utility model patent "A Device for Remediating and Purifying Petroleum Hydrocarbon-Contaminated Soil" with the publication number CN214290005U, which was published on September 28, 2021, opens a feeding trough on the side wall of the housing and feeds oxidants into the housing through the feeding trough; however, when the purification device feeds oxidants, the input amount of the oxidant cannot be controlled. Using too little agent cannot achieve the remediation effect, and using too much agent is likely to cause secondary pollution to the soil. Content of the Utility Model

[0003] Aiming at the problem that when adding agents to chemically remediate contaminated soil in the prior art, the dosage of the agent is likely to be too little or too much, affecting the remediation quality of the soil, the purpose of the utility model is to provide a device for quantitatively adding agents to remediate soil.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model includes a housing, a stirring assembly A, a stock solution tank, a mixing tank, a stirring assembly B, a liquid guide frame, and an opening and closing assembly. An inlet and a discharge pipe are respectively arranged on the housing, and the stirring assembly A is installed inside the housing; the mixing tank is fixed on the housing, and the stirring assembly B is installed inside the mixing tank. A liquid outlet is opened on the mixing tank; there are multiple stock solution tanks, which are respectively fixed on the housing above the mixing tank. Each stock solution tank is respectively connected to the mixing tank through a hose, and a metering pump is arranged on the hose; a liquid guide frame is arranged below the mixing tank, one side of the liquid guide frame is connected to the inside of the housing, and an opening and closing assembly for opening or closing the liquid outlet is arranged on the liquid guide frame. The opening and closing assembly moves up and down relative to the liquid guide frame under the drive of an opening and closing power source; the soil to be remediated is put into the housing through the inlet. The remediation liquid in the stock solution tank is mixed in the mixing tank by the stirring assembly B. When the opening and closing assembly descends and the liquid outlet is opened, the mixed remediation liquid enters the housing through the liquid outlet and the liquid guide frame, and is mixed with the soil to be remediated through the stirring assembly A to purify the contaminated soil. The treated soil is discharged through the discharge pipe.

[0006] Wherein: the opening and closing component includes a movable block and a plug. The liquid guide frame is fixed on the casing or at the bottom of the mixing tank. A chute is provided at the bottom of the liquid guide frame. The movable block slides up and down relative to the liquid guide frame in the chute. A plug corresponding to the liquid outlet is provided at the top of the movable block. A driving component for driving the movable block to slide up and down is provided on the mixing tank.

[0007] The driving component includes a lifting plate and an electric push rod. The electric push rod is fixed on the mixing tank. The lifting plate is fixedly connected to the movable block. The output end of the electric push rod is connected to the lifting plate.

[0008] A guiding column is provided between the liquid guide frame and the lifting plate.

[0009] The top of the movable block is an arc-shaped protrusion. An arc-shaped depression matching the arc-shaped protrusion is provided at the bottom of the mixing tank.

[0010] Through holes for communication are provided on the side walls of both the liquid guide frame and the casing. The lower surface of the axial section of the through hole is an inclined surface inclined towards the bottom of the casing.

[0011] The stirring component B includes a stirring shaft B and stirring rods. The stirring shaft B is rotatably installed in the mixing tank and is horizontally arranged. A plurality of stirring rods are uniformly arranged along the circumferential direction on the stirring shaft B. Each of the stirring rods is arranged at equal intervals along the axial direction of the stirring shaft B. A stirring motor B is fixedly connected to the mixing tank. The output end of the stirring motor B is connected to the stirring shaft B to drive the stirring shaft B to drive each stirring rod to rotate.

[0012] One end of each stirring rod is fixedly connected to the stirring shaft B, and a side scraper is provided at the other end of each stirring rod. The side scraper abuts against the inner wall of the mixing tank.

[0013] The stirring component A includes a stirring shaft A and stirring blades. The stirring shaft A is rotatably installed in the casing and is vertically arranged. A plurality of stirring blades are uniformly arranged along the circumferential direction on the stirring shaft A. Each of the stirring blades is arranged at equal intervals along the axial direction of the stirring shaft A. A stirring motor A is fixedly connected to the casing. The output end of the stirring motor A is connected to the stirring shaft A to drive the stirring shaft A to drive each stirring blade to rotate.

[0014] The advantages and positive effects of the present utility model are:

[0015] 1. In the present utility model, the stock solutions for making the repair liquid are stored in multiple stock solution tanks respectively. When in use, according to the amount of soil put into the casing, a metering pump is used to control the quantitative stock solutions in each stock solution tank to be put into the mixing tank, avoiding the situation of excessive or insufficient input of the repair liquid in the casing and improving the repair quality of the soil.

[0016] 2. The top of the movable block of the present utility model is provided with an arc-shaped protrusion, and the bottom of the mixing tank is correspondingly provided with an arc-shaped depression. The arc-shaped protrusion can facilitate guiding the repair liquid into the casing and reduce the residual amount when the repair liquid flows onto the movable block. The arc-shaped depression at the bottom of the mixing tank can increase the sealing area with the arc-shaped protrusion at the top of the movable block.

[0017] 3. A guiding column is arranged between the liquid guiding frame and the lifting plate of the present utility model. The guiding column plays a stabilizing role, making the lifting plate move stably when lifting and lowering, and avoiding the situation of skew misalignment when the plug re-closes the liquid outlet. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a right view of the structure of the present utility model;

[0020] Figure 3 is a front view cross-sectional view of the present utility model;

[0021] Figure 4 is a cross-sectional view of the internal structure of the mixing tank of the present utility model;

[0022] Wherein: 1 is the casing, 2 is the stirring shaft A, 3 is the discharge pipe, 4 is the stock solution tank, 5 is the mixing tank, 6 is the hose, 7 is the metering pump, 8 is the liquid guiding frame, 9 is the movable block, 10 is the plug, 11 is the lifting plate, 12 is the electric push rod, 13 is the guiding column, 14 is the stirring shaft B, 15 is the stirring motor A, 16 is the stirring rod, 17 is the side scraper, 18 is the feeding port, 19 is the stirring blade, 20 is the stirring motor B. Detailed Embodiment

[0023] The present utility model will be further described in detail below with reference to the drawings.

[0024] As Figures 1 to 4 shown, the present utility model includes a casing 1, a stirring assembly A, a stock solution tank 4, a mixing tank 5, a stirring assembly B, a liquid guiding frame 8 and an opening and closing assembly. An inlet 18 is provided at the top of the casing 1, and a discharge pipe 3 is provided on the side wall of the casing 1. The discharge pipe 3 is communicated with the inside of the casing 1, and the stirring assembly A is installed in the casing 1; the mixing tank 5 is fixed on the casing 1, and the stirring assembly B is installed in the mixing tank 5, and a liquid outlet is provided on the mixing tank 5; there are multiple stock solution tanks 4, which are respectively fixed on the casing 1 above the mixing tank 5, and each stock solution tank 4 is communicated with the mixing tank 5 through a hose 6, and a metering pump 7 is provided on the hose 6; a liquid guiding frame 8 is provided below the mixing tank 5, one side of the liquid guiding frame 8 is communicated with the inside of the casing 1, and an opening and closing assembly for opening or closing the liquid outlet is provided on the liquid guiding frame 8, and the opening and closing assembly is lifted and lowered relative to the liquid guiding frame 8 by the drive of an opening and closing power source.

[0025] In this embodiment, three stock solution tanks 4 are arranged side by side at the top of the side wall of the casing 1. The stock solution tanks 4 store the stock solution of the repair agent or tap water. The stock solution of the repair agent can be a biological repair solution, and the biological repair solution is a commercially available product. The "microbial complex bacterium agent" of the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, with the model ZK-01 can be purchased. According to the pollution degree and soil conditions, the dosage is 1-2 kg added per cubic meter of soil; or the "petroleum-polluted soil repair bacterium agent" of Beijing Kehaihuake Technology Co., Ltd., with the model KH-PRB can be purchased, and the dosage is 2-5 kg added per cubic meter of polluted soil; or the "environment-friendly petroleum-degrading bacterium agent" of Shanghai Biotechnology Co., Ltd., with the model SH-B100 can be purchased, and the dosage is 1-3 kg added per cubic meter of polluted soil; or the "soil petroleum hydrocarbon-degrading bacterium" of Suzhou Huaxiang Biotechnology Co., Ltd., with the model HX-T100 can be purchased, and the dosage is 2-4 kg added per cubic meter of polluted soil. Tap water can play a role in dilution. The bottom of each stock solution tank 4 is respectively connected to a hose 6. One end of each hose 6 is connected to a stock solution tank 4, and the other end of each hose 6 is connected to the inside of the mixing tank 5. A metering pump 7 is provided on each hose 6 near the connection with the mixing tank 5.

[0026] The stirring assembly A of this embodiment includes a stirring shaft A2 and stirring blades 19. The stirring shaft A2 is rotatably installed at the bottom inside the casing 1 and is vertically arranged. A plurality of stirring blades 19 are evenly arranged on the stirring shaft A2 in the circumferential direction, and the stirring blades 19 are arranged at equal intervals along the axial direction of the stirring shaft A2. The stirring motor A15 is located outside the casing 1 and is fixedly connected to the lower surface of the casing 1. The lower end of the stirring shaft A2 extends out of the casing 1 and is connected to the output end of the stirring motor A15, and the stirring shaft A2 is driven by the stirring motor A15 to drive the stirring blades 19 to rotate.

[0027] The liquid guiding frame 8 is fixed on the casing 1 or the bottom of the mixing tank 5. In this embodiment, the liquid guiding frame 8 is fixed on the bottom of the mixing tank 5. Through holes 22 for communication are opened on both the liquid guiding frame 8 and the side wall of the casing 1. The lower surface of the axial section of the through hole 22 is an inclined surface 21 inclined towards the bottom of the casing 1, so as to facilitate the repair liquid to flow from the liquid guiding frame 8 into the casing 1 and reduce the residue of the repair liquid on the liquid guiding frame 8.

[0028] The opening and closing component of this embodiment includes a movable block 9 and a plug 10. A chute is formed at the bottom of the liquid guide frame 8, and the movable block 9 slides up and down relative to the liquid guide frame 8 within the chute. One or more liquid outlets are formed along the length direction at the bottom of the mixing tank 5 of this embodiment. The top of the movable block 9 is provided with plugs 10 that are in one-to-one correspondence with the number of liquid outlets. Each plug 10 is hermetically inserted into the corresponding liquid outlet. A driving component for driving the movable block 9 to slide up and down is provided on the mixing tank 5. The liquid outlet of this embodiment is a circular through-hole, and the plug 10 is cylindrical. The movable block 9 is in dynamic sealing connection with the chute. When it is necessary to pour the repair liquid in the mixing tank 5 into the machine housing 1, the driving component is started. The driving component drives the movable block 9 to move downward, driving the plug 10 at the top of the movable block 9 to move downward, so that the plug 10 disengages from the liquid outlet. The repair liquid in the mixing tank 5 flows out from the liquid outlet and flows into the machine housing 1 through the through-hole 22 on one side of the liquid guide frame 8 and the through-hole 22 on the side wall of the machine housing 1; after the repair liquid in the mixing tank 5 has flowed out, the driving component is restarted to make the movable block 9 drive the plug 10 to move upward and close the liquid outlet again.

[0029] The driving component of this embodiment includes a lifting plate 11 and an electric push rod 12. The electric push rod 12 is fixed on the side wall of the mixing tank 5, the lifting plate 11 is fixedly connected to the bottom of the movable block 9, and the output end of the electric push rod 12 is fixedly connected to the lifting plate 11. When opening the liquid outlet at the bottom of the mixing tank 5, the electric push rod 12 is started. The electric push rod 12 pushes the lifting plate 11 to descend, driving the movable block 9 fixedly connected to the lifting plate 11 to descend, so that the plug 10 at the top of the movable block 9 moves downward in a direction away from the liquid outlet and finally disengages from the liquid outlet, and the plug 10 no longer blocks the repair liquid in the mixing tank 5 from flowing into the machine housing 1 through the liquid outlet.

[0030] The top of the movable block 9 of this embodiment is an arc-shaped protrusion, and the bottom of the mixing tank 5 is provided with an arc-shaped depression that matches the arc-shaped protrusion. The height of the arc-shaped protrusion is not higher than the height of the plug 10. In order to prevent too much residue from occurring when the repair liquid in the mixing tank 5 flows down from the liquid outlet onto the movable block 9, the arc-shaped protrusion can facilitate guiding the repair liquid into the machine housing 1 and reduce the residue amount when the repair liquid flows onto the movable block 9; and the bottom of the mixing tank 5 is provided with an arc-shaped depression that matches the arc-shaped protrusion, which can increase the sealing area between the bottom of the mixing tank 5 and the movable block 9 when the plug 10 closes the liquid outlet.

[0031] A guiding column 13 is further provided between the liquid guide frame 8 and the lifting plate 11 in this embodiment. The guiding column 13 is arranged at one end of the lifting plate 11 away from the electric push rod 12. The guiding column 13 plays a stabilizing role, enabling the lifting plate 11 to move stably when rising and falling, and avoiding the situation of skewing and misalignment when the plug 10 closes the liquid outlet again.

[0032] The stirring assembly B of this embodiment includes a stirring shaft B14 and stirring rods 16. The stirring shaft B14 is rotatably installed in the mixing tank 5 and is horizontally arranged. A plurality of stirring rods 16 are evenly arranged on the stirring shaft B14 along the circumferential direction, and the stirring rods 16 are arranged at equal intervals along the axial direction of the stirring shaft B14. A stirring motor B20 is fixedly connected to the side wall of the mixing tank 5. One end of the stirring shaft B14 extends out of the mixing tank 5 and is connected to the output end of the stirring motor B20. The stirring motor B20 drives the stirring shaft B14 to drive each stirring rod 16 to rotate. When mixing the stock solution put into the mixing tank 5, the stirring motor B20 is started. The stirring motor B20 drives the stirring shaft B14 to rotate, driving the stirring rods 16 on the circumference of the stirring shaft B14 to rotate, so as to mix the stock solution in the mixing tank 5.

[0033] One end of each stirring rod 16 is fixedly connected to the stirring shaft B14, and a side scraper 17 is provided at the other end of each stirring rod 16. The side scraper 17 abuts against the inner wall of the mixing tank 5. When the liquid outlet is opened to discharge the repair liquid, the stirring motor B20 continues to drive the stirring shaft B14 to rotate, so that the side scraper 17 scrapes off the liquid remaining on the inner wall of the mixing tank 5 and discharges it cleanly through the liquid outlet, reducing the liquid residue in the mixing tank 5.

[0034] The working principle of the utility model is as follows:

[0035] In use, the contaminated soil to be repaired is put into the machine shell 1 from the feed inlet 18. Then, according to the amount of soil put in, the worker starts each metering pump 7 to put a fixed amount and proportional repair liquid into the mixing tank 5. At this time, the opening and closing assembly closes the liquid outlet of the mixing tank 5. The stirring assembly B is started, and the stirring motor B20 drives the stirring shaft B14 to drive the stirring rods 16 to rotate, stirring and mixing the stock solution in the mixing tank 5, so as to achieve the purpose of preparing the solution for immediate use and avoid volatilization. After the repair liquid is mixed, the opening and closing assembly is started. The electric push rod 12 drives the movable block 9 to move downward through the lifting plate 11, and the plug 10 on the top of the movable block 9 disengages from the liquid outlet, and then the liquid outlet is communicated with the inside of the machine shell 1 through the liquid guide frame 8 and the through hole on the side wall of the machine shell 1, so as to put the repair liquid into the machine shell 1. The repair liquid entering the machine shell 1 is rotated and stirred by the stirring motor A15 driving the stirring shaft A2 to drive the stirring blades 19, so that the repair liquid is fully mixed and reacted with the soil, efficiently oxidizing petroleum hydrocarbon pollutants, achieving the purpose of purifying the contaminated soil, and finally discharging the treated soil through the discharge pipe 3. Since the hose 6 of each stock solution tank 4 controls the flow rate through the metering pump 7, the worker can control the stock solution of the repair liquid put into the mixing tank 5 according to the amount of soil to be treated, avoiding the situation of over-investment or under-investment, and ensuring the repair quality of the soil.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A soil remediation device for quantitatively adding a chemical, characterized in that: The invention comprises a casing (1), a stirring component A, a raw liquid tank (4), a mixing tank (5), a stirring component B, a liquid guide frame (8) and an opening and closing component, wherein the casing (1) is provided with a material inlet (18) and a material discharge pipe (3), the stirring component A is installed in the casing (1); the mixing tank (5) is fixed on the casing (1), the stirring component B is installed in the mixing tank (5), and a liquid outlet is provided on the mixing tank (5); there are a plurality of raw liquid tanks (4), which are respectively fixed on the casing (1) above the mixing tank (5), and each raw liquid tank (4) is connected to the mixing tank (5) through a hose (6), and a metering pump (7) is provided on the hose (6); a metering pump (7) is provided below the mixing tank (5); A liquid guide frame (8) is provided, one side of which is in communication with the interior of the casing (1), and an opening and closing assembly for opening or closing a liquid outlet is provided on the liquid guide frame (8), and the opening and closing assembly is driven by an opening and closing power source to rise and fall relative to the liquid guide frame (8); soil to be repaired is fed into the casing (1) through the feed inlet (18), and the repair liquid in the stock liquid tank (4) is mixed in the mixing tank (5) by a stirring assembly B; when the opening and closing assembly descends and the liquid outlet is opened, the mixed repair liquid enters the casing (1) through the liquid outlet and the liquid guide frame, and is mixed with the soil to be repaired by the stirring assembly A, thereby purifying the contaminated soil, and the treated soil is discharged from the discharge pipe (3).

2. The soil remediation device for quantitative addition of reagents according to claim 1, characterized in that: The opening and closing component comprises a movable block (9) and a plug (10); the liquid guide frame (8) is fixed on the casing (1) or on the bottom of the mixing box (5); a slide groove is provided at the bottom of the liquid guide frame (8); the movable block (9) slides up and down relative to the liquid guide frame (8) in the slide groove; a plug (10) corresponding to the liquid outlet is provided on the top of the movable block (9); and a driving component for driving the movable block (9) to slide up and down is provided on the mixing box (5).

3. The soil remediation device for quantitative addition of chemicals according to claim 2, characterized in that: The driving assembly comprises a lifting plate (11) and an electric push rod (12), wherein the electric push rod (12) is fixed on the mixing box (5), the lifting plate (11) is fixedly connected to the movable block (9), and the output end of the electric push rod (12) is connected to the lifting plate (11).

4. The soil remediation device for quantitative addition of reagent according to claim 3 is characterized in that: A guide column (13) is provided between the liquid guide frame (8) and the lifting plate (11).

5. The soil remediation device for quantitative addition of reagents according to claim 2, characterized in that: The top of the movable block (9) is an arc-shaped protrusion, and the bottom of the mixing box (5) is provided with an arc-shaped depression matching the arc-shaped protrusion.

6. The soil remediation device for quantitative addition of reagents according to claim 1, characterized in that: The liquid guide frame (8) and the side wall of the housing (1) are both provided with a through hole (22) for communication, and the lower side of the axial section of the through hole (22) is an inclined surface (21) inclined toward the bottom of the housing (1).

7. The soil remediation device for quantitative addition of reagents according to claim 1, characterized in that: The stirring assembly B comprises a stirring shaft B (14) and a stirring rod (16). The stirring shaft B (14) is rotatably mounted in a mixing box (5) and is arranged horizontally. A plurality of stirring rods (16) are evenly arranged on the stirring shaft B (14) along a circumferential direction, and each stirring rod (16) is arranged at equal intervals along the axial direction of the stirring shaft B (14). A stirring motor B (20) is fixedly connected to the mixing box (5). The output end of the stirring motor B (20) is connected to the stirring shaft B (14), and the stirring shaft B (14) is driven to drive each stirring rod (16) to rotate.

8. The soil remediation device for quantitative addition of reagents according to claim 7, characterized in that: One end of each stirring rod (16) is fixedly connected to the stirring shaft B (14), and the other end of each stirring rod (16) is provided with a side scraper (17), and the side scraper (17) abuts against the inner wall of the mixing box (5).

9. The soil remediation device for quantitative addition of reagents according to claim 1, characterized in that: The stirring assembly A comprises a stirring shaft A (2) and stirring blades (19); the stirring shaft A (2) is rotatably mounted in the housing (1) and is vertically arranged; a plurality of stirring blades (19) are evenly arranged on the stirring shaft A (2) along the circumferential direction; each stirring blade (19) is evenly spaced along the axial direction of the stirring shaft A (2); a stirring motor A (15) is fixedly connected to the housing (1); an output end of the stirring motor A (15) is connected to the stirring shaft A (2), and the stirring shaft A (2) is driven to drive each stirring blade (19) to rotate.

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