Concrete waste slurry recovery device

Abstract

This utility model relates to the field of construction machinery and discloses a concrete waste slurry recycling device, including a waste liquid treatment tank, a stirring and dispersing device, a waste liquid storage pool, and a concentration detection unit for detecting the concentration of particulate matter in the waste liquid treatment tank. A conveying mechanism is provided between the waste liquid treatment tank and the waste liquid storage pool to input the waste slurry from the waste liquid storage pool into the waste liquid treatment tank. The stirring and dispersing device is rotatably installed in the waste liquid treatment tank and includes a rotating rod rotatably installed in the waste liquid treatment tank. A stirring blade is circumferentially fixed at the lower part of the rotating rod. A clean water inlet is opened at the upper part of the waste liquid treatment tank, and a discharge mechanism is provided on the waste liquid treatment tank to solve the problem of unstable quality of existing waste slurry recycling.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery, specifically to a concrete waste slurry recycling device. Background Technology

[0002] Concrete, primarily composed of sand, stone, cement, mineral admixtures, water, and additives, is an indispensable part of modern construction. When freshly mixed concrete needs to be recycled or disposed of for various reasons, only a small number of companies reuse it. The vast majority of companies, due to market constraints, site limitations, and investment plans, lack the capacity for such disposal and choose to scrap it. Specifically, after normal production, concrete mixing plants need to clean the mixers, transport trucks, and pump trucks. During cleaning, sand and gravel separators are generally used to separate and recover the sand and gravel. The remaining large amount of waste slurry is usually filtered by a filter press before being disposed of as waste. On the one hand, filtration consumes a large amount of permeable membranes; on the other hand, the filter mud must be disposed of according to the standards of professional solid waste disposal units that meet environmental protection requirements, increasing concrete production costs and placing significant pressure on the ecological environment. Currently, many concrete production companies are trying to use waste slurry in production, but often they only mix sand and gravel into the waste slurry to produce precast concrete bricks and other components. However, due to fluctuations in the concentration of the waste slurry, the workability of different batches of recycled concrete is uncontrollable, thus affecting product quality. Utility Model Content

[0003] The present invention aims to provide a concrete waste slurry recycling device to solve the problem of unstable quality of existing waste slurry recycling.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a concrete waste slurry recycling device, comprising a waste liquid treatment tank, a stirring and dispersing device, a waste liquid storage pool, and a concentration detection unit for detecting the concentration of particulate matter in the waste liquid treatment tank. A conveying mechanism is provided between the waste liquid treatment tank and the waste liquid storage pool to input the waste slurry from the waste liquid storage pool into the waste liquid treatment tank. The stirring and dispersing device is rotatably disposed in the waste liquid treatment tank. The stirring and dispersing device includes a rotating rod rotatably disposed in the waste liquid treatment tank. A stirring blade is circumferentially fixed at the lower part of the rotating rod. A clean water inlet is opened at the upper part of the waste liquid treatment tank. A discharge mechanism is provided on the waste liquid treatment tank.

[0005] The beneficial effects of this plan are:

[0006] This technical solution involves setting up a waste liquid treatment tank, which is connected to a waste liquid storage pool. The waste liquid storage pool is used to temporarily store the waste slurry after sand and gravel removal from the transport equipment and devices. During waste slurry recycling, the waste slurry in the storage pool is fed into the waste liquid treatment tank via a conveying mechanism. The tank is then agitated by a stirring and dispersing device. Since particulate matter in the waste slurry tends to settle, stirring helps to evenly suspend it in the liquid. After stabilization, the concentration is measured by a concentration detection unit. Because most of the waste slurry comes from the transport equipment, the particulate matter concentration is generally high. Therefore, clean water is injected through a clean water inlet as a supplement. Once the particulate matter concentration stabilizes within a set range, the slurry can be reused. This recycling method not only recovers the waste slurry but also avoids the consumption of large amounts of permeable membranes and the need for waste disposal, reducing operating costs. The concentration detection unit allows for precise control of the concentration before direct use in concrete production.

[0007] The stirring and dispersing device inside the waste liquid treatment tank ensures that the particles in the waste slurry are uniformly suspended, avoiding sedimentation and improving the uniformity of the slurry. The recovered waste slurry can be directly used in concrete production, reducing the use of fresh mixing water and lowering production costs. The device has high measurement accuracy and stable dispersion of particles in the slurry, which not only meets the requirements of green production but also has significant benefits in controlling concrete production costs, resulting in high economic and environmental benefits.

[0008] Preferably, as an improvement, the stirring and dispersing device also includes a rotating shaft sealed bearing and a stirring motor that can drive the rotating rod to rotate. The rotating rod passes through the top of the waste liquid treatment tank, and both ends of the rotating rod are rotatably engaged with the waste liquid treatment tank through rotating sealed bearings.

[0009] The beneficial effects are as follows: the rotating shaft sealed bearings set at both ends of the rotating rod ensure that the rotating rod can rotate stably in the waste liquid treatment tank, avoiding leakage and wear; the stirring motor provides continuous power, so that the stirring blades can effectively disperse the particulate matter in the waste slurry evenly, prevent sedimentation, and improve the uniformity and stability of the slurry.

[0010] Preferably, as an improvement, the waste liquid treatment tank is further provided with a rotating shaft reinforcement structure in the middle. The rotating shaft reinforcement structure includes a fixing ring and a support rod that is cross-fixed on the fixing ring. The center of the rotating shaft reinforcement structure is also provided with a rotating shaft sealing bearing that is connected to the rotating shaft.

[0011] The beneficial effects are as follows: by setting a rotating shaft reinforcement structure in the waste liquid treatment tank, which is located in the middle of the tank and connected by a rotating shaft sealing bearing, a stable support is provided for the middle of the rotating shaft, thereby improving the stability of the rotating shaft and ensuring the smooth operation of the stirring and dispersing device.

[0012] Preferably, as an improvement, the stirring blade includes a connecting rod and an impeller blade disposed at the end of the connecting rod, and the other end of the connecting rod is fixedly connected to the rotating rod.

[0013] The beneficial effects are as follows: through the setting of connecting rod and impeller blade, the stirring blade can generate stronger shear force and fluid disturbance in the waste liquid treatment tank, effectively dispersing the particulate matter in the waste slurry evenly, preventing sedimentation, and improving the uniformity and stability of the slurry.

[0014] Preferably, as an improvement, the waste liquid treatment tank has a waste liquid inlet at the top and a waste liquid outlet at the bottom of the waste liquid storage tank. It also includes a replenishment pipe connecting the waste liquid outlet and the waste liquid inlet, and a conveying mechanism is installed on the replenishment pipe. The conveying mechanism includes a replenishment pump and a replenishment solenoid valve.

[0015] The beneficial effects are: the combined use of the replenishment pump and the solenoid valve can regulate the liquid level in the waste liquid treatment tank and keep it within the set range, while also facilitating automated control.

[0016] Preferably, as an improvement, it also includes a level controller installed on the waste liquid treatment tank, and a clean water solenoid valve is provided at the clean water inlet.

[0017] The beneficial effects are as follows: by setting up a liquid level controller, on the one hand, the input amount of waste slurry can be detected, and on the other hand, the changes in the liquid level in the waste liquid treatment tank can be monitored in real time to ensure that the liquid level is always kept within the set range, and to prevent equipment failure or reduced treatment efficiency due to excessively high or low liquid levels.

[0018] Preferably, as an improvement, the discharge mechanism includes a waste liquid outlet located at the bottom of the waste liquid treatment tank, a waste liquid outlet connected to a waste liquid outlet pipe, and a waste liquid outlet pump for controlling the on / off state of the pipeline on the waste liquid outlet pipe.

[0019] Preferably, as an improvement, the bottom of the waste liquid storage tank is also equipped with a pre-stirring mechanism that rotates.

[0020] The beneficial effects are: by setting a pre-stirring mechanism at the bottom of the waste liquid storage tank, it is possible to avoid excessive concentration of sediment, which could lead to blockage of the replenishment pipe and replenishment pump, thereby reducing the frequency of maintenance and improving the stability of equipment operation.

[0021] Preferably, as an improvement, multiple stirring blades are fixed circumferentially at the lower part of the rotating rod.

[0022] Preferably, as an improvement, the impeller blade is a straight plate and the impeller blade is fixed on the connecting rod, and the impeller blade is tilted after rotating around the vertical plane of the connecting rod.

[0023] The beneficial effects are as follows: the inclined impeller blades can generate stronger cutting force and fluid disturbance during rotation, effectively dispersing the particles in the waste slurry evenly, preventing sedimentation, and improving the uniformity and stability of the slurry; at the same time, the inclined impeller blades reduce the resistance of the liquid during the stirring process and improve the stirring efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the rotating shaft reinforcement structure according to an embodiment of the present invention;

[0026] Figure 3 This is a top view of the stirring and dispersing device according to an embodiment of the present invention;

[0027] Figure 4 This is a side view of the impeller blade in an embodiment of the present utility model.

[0028] The attached reference numerals include: 1. Waste liquid treatment tank; 2. Waste liquid storage pool; 3. Particulate matter concentration detector; 4. Rotating rod; 5. Clean water inlet; 6. Rotating shaft sealed bearing; 7. Stirring motor; 8. Fixing ring; 9. Support rod; 10. Connecting rod; 11. Impeller blade; 12. Waste liquid inlet; 13. Waste liquid outlet; 14. Make-up pipe; 15. Make-up pump; 16. Make-up solenoid valve; 17. Liquid level controller; 18. Clean water solenoid valve; 19. Waste liquid outlet pipe; 20. Waste liquid outlet pump; 21. Pre-stirring mechanism. Detailed Implementation

[0029] The following detailed description is provided through specific implementation methods and examples:

[0030] The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-4 As shown, Figure 1 The concrete waste slurry recycling device shown includes a waste liquid treatment tank 1, a stirring and dispersing device, a waste liquid storage tank 2, and a concentration detection unit for detecting the particulate matter concentration in the waste liquid treatment tank 1. A conveying mechanism is provided between the waste liquid treatment tank 1 and the waste liquid storage tank 2. The waste liquid treatment tank 1 is equipped with a stirring and dispersing device and a concentration detection unit. In the preferred embodiment of this invention, the concentration detection unit includes multiple particulate matter concentration detectors 3. In this invention, the number of particulate matter concentration detectors 3 is 4, which are arranged circumferentially on the inner wall of the waste liquid treatment tank 1 to ensure the accuracy of the detection results. The stirring and dispersing device includes a rotating rod 4 rotatably installed in the waste liquid treatment tank 1. Figure 3 As shown, multiple sets of stirring blades are fixed circumferentially at the lower part of the rotating rod 4. The number of stirring blades in this utility model is set to 6 sets. A clean water inlet 5 is opened at the upper part of the waste liquid treatment tank 1, and a discharge mechanism is provided on the waste liquid treatment tank 1.

[0031] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a rotating shaft sealing bearing 6 and a stirring motor 7 that drives the rotating rod 4 to rotate. The stirring motor 7 is fixedly installed on the upper part of the waste liquid treatment tank 1. The rotating rod 4 passes through the top of the waste liquid treatment tank 1. There are various ways to connect the rotating rod 4 to the waste liquid treatment tank 1, as long as it ensures that the rotating rod 4 can rotate smoothly inside the waste liquid treatment tank 1. In this invention, both the upper and lower ends of the rotating rod 4 are rotated with the waste liquid treatment tank 1 through rotating sealing bearings. The rotating shaft sealing bearings 6 at both ends of the rotating rod 4 ensure that the rotating rod 4 can rotate stably inside the waste liquid treatment tank 1, avoiding leakage and wear of the waste slurry. The stirring motor 7 provides continuous power for the rotation of the rotating rod 4, enabling the stirring blades to effectively disperse the particles in the waste slurry evenly, preventing sedimentation and improving the uniformity and stability of the slurry.

[0032] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a stirring blade comprising a connecting rod 10 and an impeller blade 11 disposed at the end of the connecting rod 10. The shape and structure of the impeller blade 11 are not limited, as long as it is plate-shaped. In this invention, the impeller blade 11 is a planar plate. The other end of the connecting rod 10 is fixedly connected to the rotating rod 4. The fixing method can be screw fixing or welding. Figure 4 As shown, to ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: the impeller blade 11 is obliquely fixed to the connecting rod 10 by bolts. The impeller blade 11 is tilted after rotating around the vertical plane of the connecting rod 10, with a rotation angle of less than 90 degrees. The tilted impeller blade 11 can generate stronger cutting force and fluid disturbance during rotation, effectively dispersing the particles in the waste slurry evenly, preventing sedimentation, and improving the uniformity and stability of the slurry. At the same time, tilting the impeller blade 11 reduces the resistance of the liquid during stirring and improves the stirring efficiency. In this invention, the distance between the outer edge of the impeller blade 11 and the inner wall of the waste liquid treatment tank 1 is less than 5 cm to prevent particles from settling and adhering to the inner wall of the tank.

[0033] To ensure a simple, reliable structure and ease of assembly, the preferred embodiment of this invention includes a waste liquid treatment tank 1 with a central section such as... Figure 2 The rotating shaft reinforcement structure shown includes a fixing ring 8 and two support rods 9 that are cross-fixed to the fixing ring 8. The fixing ring 8 can be fixed to the inner wall of the waste liquid treatment tank 1 by bolts or welding. The center of the rotating shaft reinforcement structure is also provided with a rotating shaft sealing bearing 6 that is connected to the rotating shaft. By setting the rotating shaft reinforcement structure in the middle of the waste liquid treatment tank 1 and connecting it with the rotating shaft sealing bearing 6, stable support is provided to the middle of the rotating shaft, improving the stability of the rotating shaft and ensuring the smooth operation of the stirring and dispersing device.

[0034] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: the waste liquid treatment tank 1 has a waste liquid inlet 12 at its upper part, and the waste liquid storage tank 2 has a waste liquid outlet 13 at its bottom. It also includes a replenishment pipe 14 connecting the waste liquid outlet 13 and the waste liquid inlet 12. A conveying mechanism is installed on the replenishment pipe 14. The conveying mechanism includes a replenishment pump 15 and a replenishment solenoid valve 16. The cooperation of the replenishment pump 15 and the replenishment solenoid valve 16 can adjust the liquid level in the waste liquid treatment tank 1 and keep it within a set range, while also facilitating automated control. To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this utility model includes a level controller 17 installed on the waste liquid treatment tank 1, and a clean water solenoid valve 18 installed at the clean water inlet 5. This valve can detect the input volume of waste slurry and monitor the liquid level changes in the waste liquid treatment tank 1 in real time, ensuring that the liquid level is always kept within the set range to prevent equipment failure or reduced processing efficiency due to excessively high or low liquid levels. The discharge mechanism includes a waste liquid outlet located at the bottom of the waste liquid treatment tank 1, which is connected to a waste liquid outlet pipe 19. A waste liquid outlet pump 20 is installed on the waste liquid outlet pipe 19 to control the flow of the pipeline.

[0035] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this utility model is that a pre-stirring mechanism 21 is rotatably provided at the bottom of the waste liquid storage tank 2. By providing a pre-stirring mechanism 21 at the bottom of the waste liquid storage tank 2, it is possible to avoid excessive concentration of sediment, which could lead to blockage of the replenishment pipe 14 and the replenishment pump 15, thereby reducing the frequency of maintenance and improving the stability of equipment operation.

[0036] The specific implementation process is as follows:

[0037] This technical solution involves setting up a waste liquid treatment tank 1, which is connected to a waste liquid storage pool 2. The waste liquid storage pool 2 is used to temporarily store the waste slurry after sand and gravel removal from the transport equipment and devices. During waste slurry recycling, the waste slurry in the storage pool 2 is pumped into the waste liquid treatment tank 1. The slurry is stirred by a stirring and dispersing device installed inside the waste liquid treatment tank 1. Since particulate matter in the waste slurry easily settles, stirring helps to uniformly suspend it in the liquid. After stabilization, the concentration is detected by a particulate matter concentration detector 3. Because most of the waste slurry comes from the transport equipment, the particulate matter concentration is generally high. Therefore, clean water is injected from the clean water inlet 5 as a supplement until the concentration detected by the particulate matter concentration detector 3 meets the production requirements. This recycling method not only completes the recycling of waste slurry but also avoids the consumption of large amounts of permeable membranes and the recycling and treatment of waste materials, reducing operating costs. By setting up multiple particulate matter concentration detectors 3, the concentration can be precisely controlled before direct use in concrete production.

[0038] The stirring and dispersing device inside the waste liquid treatment tank 1 ensures that the particles in the waste slurry are uniformly suspended, avoiding sedimentation and improving the uniformity of the slurry. The recovered waste slurry can be directly used for concrete production, reducing the use of fresh mixing water and lowering production costs. The device has high measurement accuracy and stable dispersion of particles in the slurry, which not only meets the requirements of green production but also has significant benefits in controlling concrete production costs, resulting in high economic and environmental benefits.

[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A concrete waste slurry recycling device, characterized in that: The system includes a waste liquid treatment tank (1), a stirring and dispersing device, a waste liquid storage tank (2), and a concentration detection unit for detecting the concentration of particulate matter in the waste liquid treatment tank (1). A conveying mechanism is provided between the waste liquid treatment tank (1) and the waste liquid storage tank (2) to input the waste slurry in the waste liquid storage tank (2) into the waste liquid treatment tank (1). The stirring and dispersing device is rotatably installed in the waste liquid treatment tank (1). The stirring and dispersing device includes a rotating rod (4) rotatably installed in the waste liquid treatment tank (1). A stirring blade is fixed circumferentially at the lower part of the rotating rod (4). A clean water inlet (5) is opened at the upper part of the waste liquid treatment tank (1). A discharge mechanism is provided on the waste liquid treatment tank (1).

2. The concrete waste slurry recycling device according to claim 1, characterized in that: The stirring and dispersing device also includes a rotating shaft sealed bearing (6) and a stirring motor (7) that can drive the rotating rod (4) to rotate. The rotating rod (4) passes through the upper part of the waste liquid treatment tank (1), and both ends of the rotating rod (4) are rotated and engaged with the waste liquid treatment tank (1) through rotating sealed bearings.

3. The concrete waste slurry recycling device according to claim 1, characterized in that: The waste liquid treatment tank (1) is also provided with a rotating shaft reinforcement structure in the middle. The rotating shaft reinforcement structure includes a fixing ring (8) and a support rod (9) that is cross-fixed on the fixing ring (8). The rotating shaft reinforcement structure is also provided with a rotating shaft sealing bearing (6) that is connected to the rotating shaft.

4. The concrete waste slurry recycling device according to claim 1, characterized in that: The stirring blade includes a connecting rod (10) and an impeller blade (11) disposed at the end of the connecting rod (10). The other end of the connecting rod (10) is fixedly connected to the rotating rod (4).

5. The concrete waste slurry recycling device according to claim 1, characterized in that: Waste liquid treatment tank (1) has a waste liquid inlet (12) at the top and a waste liquid outlet (13) at the bottom of waste liquid storage tank (2). It also includes a replenishment pipe (14) connecting the waste liquid outlet (13) and the waste liquid inlet (12). The conveying mechanism is set on the replenishment pipe (14). The conveying mechanism includes a replenishment pump (15) and a replenishment solenoid valve (16).

6. The concrete waste slurry recycling device according to claim 1, characterized in that: It also includes a level controller (17) installed on the waste liquid treatment tank (1) and a clean water solenoid valve (18) installed at the clean water inlet (5).

7. The concrete waste slurry recycling device according to claim 1, characterized in that: The discharge mechanism includes a waste liquid outlet located at the bottom of the waste liquid treatment tank (1), the waste liquid outlet is connected to a waste liquid outlet pipe (19), and a waste liquid outlet pump (20) for controlling the opening and closing of the pipeline is provided on the waste liquid outlet pipe (19).

8. The concrete waste slurry recycling device according to claim 1, characterized in that: The bottom of the waste liquid storage tank (2) is also equipped with a pre-stirring mechanism (21).

9. The concrete waste slurry recycling device according to claim 1, characterized in that: Multiple stirring blades are fixed circumferentially at the lower part of the rotating rod (4).

10. The concrete waste slurry recycling device according to claim 4, characterized in that: The impeller blade (11) is a straight plate and is fixed on the connecting rod (10). The impeller blade (11) is tilted after rotating around the vertical plane of the connecting rod (10).

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