Curing treatment equipment for waste slurry on construction site

Abstract

The utility model relates to a construction site waste slurry solidification treatment device which comprises a waste slurry box and a finished product slurry box, a conveying pipeline is communicated with the waste slurry box and the finished product slurry box, a chemical adding device capable of controlling chemical dosage is arranged on the side edge of the conveying pipeline, and waste slurry in the waste slurry box is stirred by a waste slurry stirring device and enters a pressure and flow stabilizing box. The waste slurry flows out at a stable speed and then enters a conveying pipeline, a flow valve is arranged on the conveying pipeline to control the flow of the waste slurry, a chemical adding device adds chemicals into the waste slurry in the pipeline according to the dosage, the waste slurry enters a finished product slurry box, and a finished product slurry stirring device stirs the finished product slurry and then outputs the finished product slurry. The equipment can better control the proportion of waste slurry to a medicament, and before and after the medicament is added, the waste slurry stirring device and the finished product slurry stirring device are used for stirring for multiple times, so that the mixing speed is accelerated, the medicament distribution uniformity can be improved, the mixing is more uniform, and the curing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste mud treatment technology, and in particular to a solidification treatment device for waste mud at construction sites. Background Technology

[0002] During piling construction, drilling mud serves to protect the piling walls and circulate sand outwards. After recycling, the mud eventually becomes waste mud. Subway tunneling and other construction sites also generate large amounts of waste mud. Therefore, the amount of waste mud generated annually from construction sites throughout Shanghai is enormous, making the selection of a more reasonable waste mud disposal solution increasingly important and urgent.

[0003] Traditionally, waste mud is transported to designated locations in sealed tanker trucks, piled up, allowed to settle, and then air-dried before being incinerated or used for land reclamation. This method has drawbacks: it consumes significant land resources, has a long processing time, pollutes the surrounding environment, and is costly. This is especially true for large quantities of waste mud, for which such methods are impractical. Therefore, a solution has emerged that involves on-site solidification and reuse of construction waste mud. This involves adding a solidifying agent to the waste mud, allowing it to be used on-site as material for backfilling foundation pits, trenches, and tunnel boring machine grouting. This allows for mud reuse without requiring large amounts of land and shortens the processing time.

[0004] The key to mud solidification and reuse schemes is to fully mix the mud and solidifying agent in a certain proportion. Chinese patent CN113443810A discloses a solidification device for engineering waste slurry backfilling. The backfilling pipeline is equipped with a concentration meter, a flow meter, and a pipeline mixer. After the solidifying agent and water are stirred by the solidifying agent stirring device, they are transported to the pipeline mixer via an adjustable flow pump through the solidifying agent delivery pipe. The waste mud and solidifying agent are mixed in the pipeline mixer according to the dosage ratio and then transported to the backfilling area. Chinese patent CN103979772B discloses a mud dewatering and solidification construction device, which is similar to the aforementioned patent. The above-mentioned prior art devices all involve directly adding the stirred solidifying agent (or flocculant, etc.) to the waste mud pipeline, mixing it in the pipeline mixer, and then utilizing it. One disadvantage is that the solidifying agent and mud cannot be mixed more thoroughly and evenly, affecting the solidification speed and effect. Another disadvantage is that the solidifying agent must be mixed with water before use. Utility Model Content

[0005] In view of the shortcomings or deficiencies of the prior art, the technical problem to be solved by this utility model is to provide a solidification treatment device for construction site waste mud. By stabilizing the flow rate of waste mud and setting up multiple stirring devices, the mixing of waste mud and agents is accelerated, so that the mud has a faster solidification speed and a better solidification effect.

[0006] To solve the above-mentioned technical problems, the present invention has the following structure:

[0007] A construction site waste mud solidification treatment device includes a waste mud tank and a finished mud tank. A conveying pipeline connects the waste mud tank and the finished mud tank. A dosing device capable of controlling the dosage is arranged on the side of the conveying pipeline. The outlet of the dosing device is connected to the dosing port on the conveying pipeline. A waste mud stirring device is installed above the waste mud tank. The stirred mud enters a pressure and flow stabilizing tank. The inlet of the conveying pipeline is connected to the pressure and flow stabilizing tank, and the outlet is connected to the finished mud tank. A flow valve is installed between the inlet of the conveying pipeline and the dosing port. After the waste mud with added chemicals enters the finished mud tank, the finished mud stirring device installed above the finished mud tank stirs the finished mud. The mud in the finished mud tank is output from the outlet. A controller is electrically connected to the flow valve and the dosing device to control the flow rate of the waste mud and chemicals, so that the two are mixed in a set ratio.

[0008] The dosing device includes a funnel-shaped feeding hopper with an opening at the bottom. A horizontally positioned screw propeller is located below the opening, and the chemical falls from the feeding hopper into the screw propeller. A feeding motor drives the screw shaft to push the chemical forward axially, entering the dosing port of the delivery pipeline from the front outlet. A controller adjusts the chemical dosage by controlling the rotation speed of the feeding motor. A mixing funnel is installed at the dosing port of the delivery pipeline. An elevator is located on the side of the feeding hopper, lifting the chemical above the hopper and pouring it back into the hopper.

[0009] A static mud mixer is installed between the outlet of the delivery pipeline and the chemical dosing port.

[0010] The finished mud mixing device includes a bracket installed above the finished mud tank and a motor vertically mounted on the bracket. The motor drives four large blades evenly distributed around the circumference.

[0011] The flow control valve is an electric butterfly valve.

[0012] A knife gate valve is installed between the inlet of the delivery pipeline and the dosing port of the reagent.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] The waste mud solidification treatment equipment at the construction site in this embodiment first stores the waste mud in a waste mud tank, and then sets up a waste mud stirring device to stir the waste mud, making the mud-water distribution in the mud more uniform, which is in preparation for the uniform mixing with the agent later. Then, after passing through the pressure and flow stabilizing box, the mud enters the conveying pipeline at a stable flow rate, which makes it easier to control the flow rate of the waste mud, thereby better controlling the ratio of waste mud to agent. After adding the agent, it is stirred again by the finished mud stirring device to accelerate the mixing speed and improve the uniformity of agent distribution, making the mixing more uniform and improving the solidification effect.

[0015] The dosing device can directly add solid agents without pre-mixing them with water, thus improving the efficiency of solidification treatment of waste mud.

[0016] Static mud mixers compress and knead waste mud and chemicals, which helps to disperse the chemicals more evenly in the mud, greatly improving the final mixing effect.

[0017] The finished mud mixing device agitates the mud in the finished mud tank over a wide area and quickly, accelerating the mixing of waste mud and agents, which can greatly improve the solidification effect. Attached Figure Description

[0018] Figure 1 : Top view of an embodiment of this utility model;

[0019] Figure 2 : Front view of an embodiment of this utility model;

[0020] 1 Waste slurry tank, 11 Sewage outlet, 2 Finished mud tank, 21 Finished mud outlet, 3 Conveying pipeline, 31 Chemical dosing port, 4 Chemical dosing device, 41 Feeding hopper, 42 Screw propeller, 43 Mixing funnel, 44 Elevator, 45 Feeding motor, 5 Waste slurry mixing device, 6 Pressure and flow stabilizing box, 7 Flow valve, 71 Knife gate valve, 8 Finished mud mixing device, 9 Static mud mixer. Detailed Implementation

[0021] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only a simplified description for the convenience of describing this utility model and do not mean that the indicated element must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as a limitation on this utility model.

[0023] This utility model discloses a construction site waste mud solidification treatment device. It receives waste mud from the construction site and stores it in a waste mud tank. A mixing device thoroughly agitates the mud, which then flows through a pressure and flow stabilizing tank (ensuring the mud is in a stable turbulent state) into a conveying pipe 3. A flow valve 7 is installed on the conveying pipe 3 to control the mud flow rate. A dosing device adds solid agents to the waste mud in the conveying pipe 3 according to a set dosage. The waste mud and solidifying agent then enter a finished mud mixing device, where they are thoroughly mixed before being output. This equipment mixes the mud and agents in a specific ratio and thoroughly stirs the waste mud before and after adding the agents, accelerating the mixing speed and improving the mixing effect. Furthermore, this equipment can directly add solid agents without pre-mixing them with water.

[0024] The technical solution of this utility model is illustrated below with examples.

[0025] Example 1

[0026] The waste mud solidification treatment equipment at the construction site includes a rectangular box with independent cavities at both ends, namely a waste mud tank 1 for storing waste mud and a finished mud tank 2 for storing finished mud. Finished mud refers to mud containing chemicals. A conveying pipe 3 is arranged above the middle of the box, connecting the waste mud tank 1 and the finished mud tank 2. A dosing device 4 for controlling the dosage is arranged on the side of the conveying pipe 3. The outlet of the dosing device 4 is connected to the dosing port 31 on the conveying pipe 3. The waste mud in the waste mud tank 1 flows through the conveying pipe 3, and the dosing device 4 adds chemicals to the waste mud, which then flows into the finished mud tank 2.

[0027] A waste slurry stirring device 5 is installed above the waste slurry tank 1 to pre-stir the waste slurry flowing into the waste slurry tank 1, preventing silt and impurities in the waste slurry from settling at the bottom of the tank. A small amount of waste slurry deposited at the bottom is discharged as needed through the sewage outlet 11 on the outside of the waste slurry tank 1. The pre-stirred slurry is pumped into the pressure stabilizing and flow stabilizing tank 6. The pressure stabilizing and flow stabilizing tank 6 has one inlet and two outlets. One outlet is connected to the conveying pipe 3, and the other outlet discharges excess slurry back to the waste slurry tank 1. Therefore, the inlet of the conveying pipe 3 is connected to the pressure stabilizing and flow stabilizing tank 6, and the outlet is connected to the finished slurry tank 2. Because the waste slurry flowing into the waste slurry tank 1 has a rapid, unstable velocity and uneven flow rate, a partition plate is installed inside the pressure stabilizing and flow stabilizing tank 6. The overflow principle is used to maintain the liquid level inside the tank at a set height, so that the slurry delivered at the outlet is in a stable turbulent state. The slurry flowing through the pressure stabilizing and flow stabilizing tank 6 flows at a uniform and stable speed, which facilitates subsequent flow rate control and allows for more uniform mixing with the subsequently added reagents. A flow valve 7 is installed between the inlet of the conveying pipeline 3 and the chemical dosing port 31. Alternatively, a flow valve 7 and a gate valve 71 can be installed simultaneously. The flow valve 7 is an electric butterfly valve used to control and measure the flow rate of waste mud. The gate valve 71 moves in a direction perpendicular to the fluid direction and can only be fully open or fully closed. It is used to close and open the conveying pipeline to facilitate control of whether waste mud is being conveyed.

[0028] After the waste mud containing the added chemicals enters the finished mud tank 2, it is further agitated by the finished mud agitator 8 installed above the finished mud tank 2. The finished mud is then output from the finished mud outlet 21. The mud agitator accelerates the mixing of the two materials, resulting in better mud solidification.

[0029] The controller is electrically connected to the flow valve 7 and the dosing device 4 to control the flow rate of waste mud and chemicals, so that the two are mixed in a set ratio.

[0030] The waste mud solidification treatment equipment at the construction site in this embodiment first stores the waste mud in a waste mud tank. A waste mud stirring device 5 is set up to stir the waste mud, making the mud-water distribution in the mud more uniform, which prepares it for uniform mixing with the agent later. Then, after passing through the pressure and flow stabilizing box 6, the mud enters the conveying pipe 3 at a stable flow rate, which makes it easier to control the flow rate of the waste mud and thus better control the ratio of waste mud to agent. After adding the agent, it is stirred again by the finished mud stirring device 8 to accelerate the mixing speed and improve the uniformity of agent distribution, making the mixing more uniform and improving the solidification effect.

[0031] Example 2

[0032] In Embodiment 1, the dosing device 4 is located on the side of the mud conveying pipe and mounted on a bracket installed above the middle section of the tank. The dosing device 4 includes a feeding hopper 41. Solid reagents are fed into the funnel-shaped (larger at the top, smaller at the bottom) feeding hopper 41. The bottom of the feeding hopper 41 has an opening, and a horizontally positioned screw propeller 42 is located below the opening. The reagents fall from the feeding hopper 41 into the screw propeller 42. A feeding motor 45 drives the screw shaft to push the reagents axially forward, entering the dosing port 31 of the conveying pipe 3 from the front outlet. The controller changes the dosage by controlling the rotation speed of the feeding motor 45. In this embodiment, the dosing device 4 can directly add solid reagents without pre-mixing them with water, thus improving the efficiency of waste mud solidification treatment.

[0033] A mixing funnel 43 can be installed on the dosing port 31 of the delivery pipeline 3. The funnel has a large top to facilitate receiving the reagent.

[0034] An elevator 44 is installed on the side of the feeding hopper 41. The elevator 44 lifts the medicine to the top of the feeding hopper 41 and pours the medicine into the feeding hopper 41, replacing manual handling.

[0035] Example 3

[0036] In Examples 1 and 2, a static mud mixer 9 is installed between the outlet of the conveying pipe 3 and the dosing port 31. The static mud mixer 9 keeps the mud and the agent in a small space within the pipe, squeezing and kneading them, so that the agent can be dispersed and distributed more evenly in the mud, which is very helpful for the final mixing effect.

[0037] Example 4

[0038] The finished mud mixing device 8 described in Example 1 includes a bracket installed above the finished mud tank 2 and a motor vertically mounted on the bracket. The motor shaft drives four large blades evenly distributed around the circumference to rapidly and extensively agitate the mud in the finished mud tank. The waste slurry and reagents, after being compressed by the static mud mixer 9 and then stirred, can significantly improve the solidification effect.

[0039] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A construction site waste slurry solidification treatment apparatus characterized by comprising: The system includes a waste slurry tank (1) and a finished mud tank (2). A conveying pipe (3) connects the waste slurry tank (1) and the finished mud tank (2). A dosing device (4) capable of controlling the dosage is arranged on the side of the conveying pipe (3). The outlet of the dosing device (4) is connected to the dosing port (31) on the conveying pipe (3). A waste slurry stirring device (5) is installed above the waste slurry tank (1). The stirred mud enters a pressure stabilizing and flow stabilizing box (6). The inlet of the conveying pipe (3) is connected to the pressure stabilizing and flow stabilizing box (6), and the outlet... A flow valve (7) is installed between the inlet of the conveying pipe (3) and the dosing port (31) of the agent, and the waste mud with added agent enters the finished mud tank (2). The finished mud is stirred by the finished mud stirring device (8) installed above the finished mud tank (2). The mud in the finished mud tank (2) is output from the outlet. The controller is electrically connected to the flow valve (7) and the dosing device (4) to control the flow of waste mud and agent, so that the two are mixed in a set ratio.

2. The construction site waste slurry solidification treatment apparatus according to claim 1, characterized by, The dosing device (4) includes a funnel-shaped feeding hopper (41) with an opening at the bottom. A screw propeller (42) is horizontally arranged below the opening. The medicine falls from the feeding hopper (41) into the screw propeller (42). The feeding motor (45) drives the screw spindle to push the medicine forward along the axial direction and enter the dosing port (31) of the conveying pipe (3) from the front outlet. The controller changes the dosage by controlling the rotation speed of the feeding motor (45).

3. The construction site waste slurry solidification treatment apparatus according to claim 2, characterized by, A mixing funnel (43) is provided on the dosing port (31) of the delivery pipeline (3).

4. The construction site waste slurry solidification treatment apparatus according to claim 2 or 3, characterized by, An elevator (44) is provided on the side of the feeding hopper (41). The elevator (44) lifts the medicine to the top of the feeding hopper (41) and pours the medicine into the feeding hopper (41).

5. The construction site waste slurry solidification treatment apparatus according to claim 1 or 2, characterized by, A static mud mixer (9) is installed between the outlet of the conveying pipe (3) and the dosing port (31) of the agent.

6. The construction site waste slurry solidification treatment apparatus according to claim 1, characterized by, The finished mud mixing device (8) includes a bracket installed above the finished mud tank (2) and a motor installed vertically on the bracket. The motor drives four large blades evenly distributed around the circumference.

7. The construction site waste slurry solidification treatment apparatus according to claim 1, characterized by, The flow valve (7) is an electric butterfly valve.

8. The construction site waste slurry solidification treatment apparatus according to claim 1 or 7, characterized by, A knife gate valve (71) is installed between the inlet of the delivery pipeline (3) and the dosing port (31) of the agent.

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