Concrete waste slurry recovery system

Abstract

The utility model discloses a concrete waste slurry recovery system which comprises a raw slurry tank, a clear water tank, an active agent tank, a slurry preparation tank and a finished product tank, the slurry preparation tank is respectively communicated with the raw slurry tank, the clear water tank and the active agent tank through pipelines, the finished product tank is communicated with the slurry preparation tank through a pipeline, and a pump body for providing conveying power is arranged on the pipeline. Waste slurry obtained after sand and stone separation of concrete waste water is stored in the primary slurry tank, then the waste slurry, clear water and an active agent can be introduced into the slurry preparation tank to be mixed, the clear water can reduce the concentration of the waste slurry in the period, and the active agent stimulates the activity of cement; and the mixed liquid in the slurry preparation tank is introduced into the finished product tank and can be directly recycled as a production raw material of concrete, so that the recycling rate is higher, additional cost of filter cake treatment is not generated, and the waste slurry recycling cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of concrete, and in particular to a concrete waste slurry recycling system. Background Technology

[0002] Concrete is a material made by mixing cementitious materials, coarse aggregates, fine aggregates and water in appropriate proportions, and adding various admixtures when necessary. After being poured, shaped, compacted and cured for a certain period of time, it hardens into a material with certain strength and required properties.

[0003] The production of concrete generates wastewater containing a significant amount of concrete raw materials. Currently, the common method for treating concrete wastewater is to use a filter press to separate the solid and liquid components. The liquid after filtration is recycled, while the solid filter cake is transported off-site for disposal. However, the disposal of the solid filter cake incurs high costs and requires further improvement. Utility Model Content

[0004] To further reduce the cost of waste slurry recycling, this application provides a concrete waste slurry recycling system.

[0005] This application provides a concrete waste slurry recycling system, which adopts the following technical solution:

[0006] A concrete waste slurry recycling system includes a raw slurry tank, a clean water tank, an activator tank, a mixing tank, and a finished product tank. The mixing tank is connected to the raw slurry tank, the clean water tank, and the activator tank via pipelines. The finished product tank is connected to the mixing tank via a pipeline. A pump body for providing conveying power is installed on the pipeline.

[0007] Optionally, both the raw pulp tank and the finished product tank are equipped with a densitometer, which is used to detect the concentration in the tank.

[0008] Optionally, both the raw pulp tank and the finished product tank are equipped with a stirring paddle, and the stirring paddle is equipped with a drive source to drive its rotation.

[0009] Optionally, it also includes a spare tank, the bottom of which is provided with a connecting pipe, one end of which is connected to the spare tank and the other end of which is connected to the finished product tank, and a shut-off valve is provided on the connecting pipe.

[0010] Optionally, the densitometer is symmetrically arranged in the raw pulp tank and the finished product tank.

[0011] Optionally, the densitometer is vertically slidably connected to the pulp tank, one end of the densitometer extends out of the top of the pulp tank and extends to a drive end, the stirring paddle includes a central core shaft and stirring blades, a fixing plate is fixed on the core shaft, and the fixing plate is distributed with protrusions for abutting against the bottom wall of the drive end.

[0012] Optionally, multiple protrusions are evenly distributed around the circumference, and the protrusions are hemispherical.

[0013] Optionally, the heights of the circumferentially distributed protrusions are all different.

[0014] Optionally, a buffer is provided between the drive end and the top wall of the raw slurry tank.

[0015] Optionally, the buffer includes a rubber block, which is fixed to the top wall of the raw slurry tank.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The waste slurry obtained after separating sand and gravel from concrete wastewater is stored in the raw slurry tank. Then, it can be mixed with clean water and activator separately in the mixing tank. During this process, clean water can reduce the concentration of waste slurry, and activator can activate cement. The mixed liquid in the mixing tank can be directly recycled as a raw material for concrete production in the finished product tank. The recycling rate is higher and there is no additional cost of filter cake treatment, which effectively reduces the cost of waste slurry recycling.

[0018] 2. The design of the densitometer can effectively detect the concentration in the tank, ensuring the concentration of the mixed liquid more accurately, thus facilitating subsequent direct recycling.

[0019] 3. The design of the stirring paddle can stir the liquid in the raw slurry tank and the finished product tank in real time, avoiding solidification inside;

[0020] 4. During the rotation of the agitator, the protrusions drive the densitometer to move up and down repeatedly, thereby enabling the detection of different height areas inside the tank, and the data obtained can be more accurate and comprehensive. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the original pulp tank in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Raw pulp tank; 2. Clean water tank; 3. Activator tank; 4. Mixing tank; 5. Finished product tank; 6. Connecting pipe; 7. Shut-off valve; 8. Densitometer; 9. Agitator; 10. Mandrel; 11. Agitator blade; 12. Drive end; 13. Fixing plate; 14. Protrusion; 15. Buffer; 16. Drive source; 17. Spare tank. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0026] A concrete waste slurry recycling system, such as Figure 1 As shown, the system includes a raw slurry tank 1, a clean water tank 2, an activator tank 3, a mixing tank 4, and a finished product tank 5. The raw slurry from the concrete wastewater after sand and gravel separation is stored in the raw slurry tank 1. The clean water tank 2 stores clean water, and the activator tank 3 stores concrete activator. The raw slurry tank 1, the clean water tank 2, and the activator tank 3 are connected to the mixing tank 4 through pipelines. The mixing tank 4 is connected to the finished product tank 5, and each pipeline is equipped with a pump to provide the power for transportation. The finished product tank 5 is connected to the mixing tank 4. The mixed liquid in the mixing tank 4 is introduced into the finished product tank 5, and the liquid in the finished product tank 5 is recycled as a raw material for concrete production.

[0027] like Figure 1 As shown, it also includes a spare tank 17. A connecting pipe 6 is provided on one side of the bottom of the spare tank 17. One end of the connecting pipe 6 is connected to the spare tank 17, and the other end is connected to the finished product tank 5. A shut-off valve 7 is provided on the connecting pipe 6. When the liquid storage in the finished product tank 5 is too large, the shut-off valve 7 on the connecting pipe 6 can be opened to allow the mixed liquid in the spare tank 17 to be used for storage, thereby further increasing the storage capacity of the finished product tank 5. Moreover, this connection method can effectively maintain the consistency of the liquid levels in the finished product tank 5 and the spare tank 17.

[0028] like Figure 1 and Figure 2 As shown, both the raw pulp tank 1 and the finished product tank 5 are equipped with densitometers 8. The densitometers 8 are differential pressure densitometers 8, which are used to detect the concentration in the tank, i.e. the solid content. With the help of the densitometers 8, it is possible to better know whether the liquid concentration in the tank meets the requirements for recycling. Based on the concentration, the amount of clean water can be selected for neutralization, and finally a reasonable liquid recycling concentration control can be achieved. In actual use, the liquid concentration in the finished product tank 5 is generally controlled at about 5%-10%, which can be directly recycled.

[0029] The waste slurry obtained after separating sand and gravel from concrete wastewater is stored in the raw slurry tank 1. Then, it can be mixed with clean water and activator in the mixing tank 4. During this process, the clean water can reduce the concentration of the waste slurry, and the activator can activate the cement. The mixed liquid in the mixing tank 4 can then be directly recycled as a raw material for concrete production in the finished product tank 5. This results in a higher recycling rate and avoids the additional cost of filter cake treatment, effectively reducing the cost of waste slurry recycling.

[0030] like Figure 1 and Figure 2As shown, both the raw slurry tank 1 and the finished product tank 5 are equipped with stirring paddles 9. The stirring paddles 9 are equipped with a drive source 16 to drive them to rotate. The drive source 16 includes a drive motor. The stirring paddles 9 include a spindle 10 and stirring blades 11. By continuously driving the stirring paddles 9 to rotate through the drive source 16, the phenomenon of solidification of liquid in the raw slurry tank 1 and the finished product tank 5 can be effectively prevented, and the fluidity can be maintained continuously.

[0031] like Figure 2 As shown, the densitometers 8 are symmetrically arranged on both sides of the raw slurry tank 1, allowing concentration detection in both areas of the raw slurry tank 1. The densitometers 8 are vertically slidably connected to the raw slurry tank 1, with the detection end of the densitometer 8 located at the bottom and inside the raw slurry tank 1, and the top end of the densitometer 8 extending out of the top of the raw slurry tank 1. A horizontal drive end 12 is fixed to one side of the top end of the densitometer 8. A fixing plate 13 is also provided on the spindle 10 of the stirring paddle 9 and fixed thereto. The fixing plate 13 has protrusions 14 for abutting against the bottom wall of the drive end 12, with the protrusions 14 evenly distributed around the circumference. The protrusions 14 are distributed in multiple shapes, and each protrusion 14 has a different height on the circumference. The protrusions 14 are hemispherical in shape. During the rotation of the spindle 10 and the fixed plate 13, each protrusion 14 continuously abuts against the drive end 12, driving the densitometer 8 to move vertically back and forth. This changes the detection area at the bottom of the densitometer 8, thereby enabling the detection of concentrations in more different areas, obtaining more detection data, and ultimately improving the comprehensiveness and accuracy of the detection. The hemispherical structure of the protrusions 14 can improve the smooth transition during their contact with the drive end 12, reducing the phenomenon of jamming or interference.

[0032] like Figure 2 As shown, a buffer 15 is provided between the drive end 12 and the top wall of the raw pulp tank 1. The buffer 15 includes a rubber block and is fixed to the top wall of the raw pulp tank 1. The top wall of the buffer 15 is appropriately higher than the top wall of the fixed plate 13. In this way, when the drive end 12 is not in contact with the protrusion 14, the density meter 8 and the drive end 12 will come into contact with the buffer 15 when they fall. The buffer 15 can buffer the fall of the density meter 8 and avoid impact. During this period, the drive end 12 will not hit the fixed plate 13, thus providing corresponding buffer protection for the density meter 8.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete waste slurry recycling system, characterized in that: It includes a raw pulp tank (1), a clean water tank (2), an activator tank (3), a pulp mixing tank (4), and a finished product tank (5). The pulp mixing tank (4) is connected to the raw pulp tank (1), the clean water tank (2), and the activator tank (3) through pipelines. The finished product tank (5) is connected to the pulp mixing tank (4) through a pipeline. A pump body for providing conveying power is installed on the pipeline.

2. The concrete waste slurry recycling system according to claim 1, characterized in that: Both the raw pulp tank (1) and the finished product tank (5) are equipped with a densitometer (8), which is used to detect the concentration in the tank.

3. A concrete waste slurry recycling system according to claim 2, characterized in that: Both the raw pulp tank (1) and the finished product tank (5) are equipped with stirring paddles (9), and the stirring paddles (9) are equipped with a drive source (16) to drive them to rotate.

4. A concrete waste slurry recycling system according to claim 1, characterized in that: It also includes a spare tank (17), the bottom of which is provided with a connecting pipe (6), one end of which is connected to the spare tank (17) and the other end is connected to the finished product tank (5), and a shut-off valve (7) is provided on the connecting pipe (6).

5. A concrete waste slurry recycling system according to claim 3, characterized in that: The densitometer (8) is symmetrically arranged in the raw pulp tank (1) and the finished product tank (5).

6. A concrete waste slurry recycling system according to claim 5, characterized in that: The densitometer (8) is vertically slidably connected to the raw slurry tank (1). One end of the densitometer (8) extends out of the top of the raw slurry tank (1) and extends to a drive end (12). The stirring paddle (9) includes a central spindle (10) and stirring blades (11). A fixing plate (13) is fixed on the spindle (10). The fixing plate (13) has protrusions (14) distributed on it for abutting against the bottom wall of the drive end (12).

7. A concrete waste slurry recycling system according to claim 6, characterized in that: The protrusions (14) are evenly distributed around the circumference, and the protrusions (14) are hemispherical.

8. A concrete waste slurry recycling system according to claim 7, characterized in that: The heights of the various circumferentially distributed protrusions (14) are all different.

9. A concrete waste slurry recycling system according to claim 6, characterized in that: A buffer (15) is provided between the drive end (12) and the top wall of the raw slurry tank (1).

10. A concrete waste slurry recycling system according to claim 9, characterized in that: The buffer (15) includes a rubber block, which is fixed to the top wall of the raw slurry tank (1).

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