River sand cleaning, dewatering and recycling device

Abstract

The utility model relates to the technical field of river sand cleaning, dewatering and recycling, in particular to a river sand cleaning, dewatering and recycling device which comprises a dewatering tank and a bottom plate, a conical sand stacking plate is fixedly connected to the interior of the dewatering tank, and a conveying cylinder communicated with a through hole is fixedly connected to the lower end face of the sand stacking plate. A rotating shaft located in the conveying cylinder is rotationally connected between the upper end of the interior of the dewatering tank and the upper end face of the bottom plate, a spiral conveying blade is fixedly connected to the outer wall of the rotating shaft, cleaned sand and water are continuously injected into the dewatering tank together through a sand inlet pipe, and then a motor is matched with the rotating shaft to drive the spiral conveying blade to rotate; the cleaned sand is conveyed to the sand stacking plate, meanwhile, the water level in the dewatering tank slowly rises and then is discharged through the drainage pipe, and the sand can sink on the bottom plate and cannot float through the physical characteristics of the sand, so that the cleaned sand cannot be discharged along with water flow; and therefore, the cleaned sand is dewatered under the condition of reducing the loss of the fine sand.

Description

Technical Field

[0001] The utility model relates to the technical field of river sand cleaning, dehydration and recovery, in particular to a river sand cleaning, dehydration and recovery device. Background Art

[0002] With the rapid development of urban construction, the demand for building materials is also increasing. In order to obtain better construction sand, some fine powder and mud need to be removed. In the actual production process, a large amount of fine sand will be lost, and the fine sand that flows into the sewage is difficult to recover.

[0003] Existing river sand cleaning, dehydration and recovery devices generally use hydrocyclones to recover fine sand from sewage. In actual work, due to the different densities of fine sand and coarse sand, it is difficult for hydrocyclones to effectively recover fine sand, which will cause the loss of fine sand. The recovery efficiency of fine sand is not high, resulting in a large amount of fine sand in the discharged wastewater. The discharge of wastewater containing fine sand will cause certain pollution to the environment. Utility Model Content

[0004] The utility model aims to provide a river sand washing, dehydration and recovery device, which has the characteristics of reducing fine sand loss and improving fine sand recovery efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a river sand cleaning, dehydration and recovery device, comprising a dehydration tank and a bottom plate, a conical sand piling plate is fixedly connected to the interior of the dehydration tank, a through hole is penetrated through the upper end surface of the sand piling plate, a conveying cylinder connected to the through hole is fixedly connected to the lower end surface of the sand piling plate, the other end of the conveying cylinder extends to the inner lower end of the dehydration tank, a rotating shaft located inside the conveying cylinder is rotatably connected between the inner upper end of the dehydration tank and the upper end surface of the bottom plate, and a spiral conveying blade is fixedly connected to the outer wall of the rotating shaft.

[0006] In order to prevent sand accumulation, as a preferred river sand cleaning, dehydration and recovery device of the utility model, the outer wall of the rotating shaft is fixedly connected with a scraper abutting the sand pile plate, the outer wall of the dehydration tank is connected with a sand discharge trough flush with the sand pile plate, and the outer wall of the dehydration tank is connected with a drainage pipe located below the sand pile plate.

[0007] In order to facilitate the injection of the cleaned sand and water into the dewatering tank together, as a preferred river sand cleaning, dewatering and recovery device of the utility model, the outer wall of the dewatering tank is connected to a sand inlet pipe, and one end of the sand inlet pipe extends to the inner lower end of the dewatering tank.

[0008] In order to provide power for the rotation of the rotating shaft, as a preferred river sand cleaning, dehydration and recovery device of the present invention, a motor is installed on the upper end surface of the dehydration tank, and the output end of the motor is fixedly connected to the rotating shaft.

[0009] In order to facilitate cleaning and maintenance of the dewatering tank, as a preferred river sand cleaning, dewatering and recovery device of the utility model, the dewatering tank is fixed to the bottom plate by bolts.

[0010] In order to prevent the spiral conveying blades from conveying water to the sand pile plate, as a preferred river sand cleaning, dehydration and recovery device of the utility model, the spiral conveying blades are configured as a mesh structure.

[0011] In order to allow the sand after cleaning to accumulate around the spiral conveying blades, as a preferred river sand cleaning, dehydration and recovery device of the utility model, the bottom plate is configured as a funnel structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] First, the cleaned sand and water are continuously injected into the dehydration tank through the sand inlet pipe, so that the cleaned sand and water fall onto the bottom plate, and then the motor cooperates with the rotating shaft to drive the spiral conveying blade to rotate, and the cleaned sand is transported to the sand pile plate and discharged through the sand discharge trough. At the same time, the water level in the dehydration tank rises slowly and then is discharged through the drain pipe. Due to the physical properties of the sand, the sand can sink to the bottom plate and will not float, so the cleaned sand will not be discharged with the water flow, and then the cleaned sand can be dehydrated while reducing the loss of fine sand, thereby improving the recovery efficiency of fine sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a front cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 It is a right side cross-sectional structural schematic diagram of the utility model;

[0017] In the figure: 1. dewatering tank; 2. bottom plate; 3. sand piling plate; 4. through hole; 5. conveying cylinder; 6. rotating shaft; 7. spiral conveying blade; 8. sand inlet pipe; 9. scraper; 10. sand discharge trough; 11. drainage pipe; 12. motor; 13. bolts. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0019] See also Figures 1 to 3 A river sand cleaning, dehydration and recovery device comprises a dehydration tank 1 and a bottom plate 2. A conical sand piling plate 3 is fixedly connected inside the dehydration tank 1. A through hole 4 is penetrated through the upper end surface of the sand piling plate 3. A conveying cylinder 5 connected with the through hole 4 is fixedly connected to the lower end surface of the sand piling plate 3. The other end of the conveying cylinder 5 extends to the lower end of the dehydration tank 1. A rotating shaft 6 located inside the conveying cylinder 5 is rotatably connected between the upper end of the dehydration tank 1 and the upper end surface of the bottom plate 2. A spiral conveying blade 7 is fixedly connected to the outer wall of the rotating shaft 6.

[0020] In this embodiment: when in use, the cleaned sand and water are first continuously injected into the dewatering tank 1 through the sand inlet pipe 8, so that the cleaned sand and water fall onto the bottom plate 2. Since the bottom plate 2 is arranged as a funnel structure, the cleaned sand and water will accumulate around the spiral conveying blade 7 after falling onto the bottom plate 2. Then the rotating shaft 6 rotates, and the rotating shaft 6 drives the spiral conveying blade 7 to rotate, so that the cleaned sand is transported to the sand pile plate 3 and discharged through the sand discharge trough 10. At the same time, the water level in the dewatering tank 1 rises slowly and then is discharged through the drain pipe 11. Due to the physical properties of the sand, the sand can sink to the bottom plate 2 and will not float. Therefore, the cleaned sand will not be discharged with the water flow, and then the cleaned sand is dehydrated while reducing the loss of fine sand, thereby improving the recovery efficiency of fine sand.

[0021] As a technical optimization solution of the utility model, the outer wall of the rotating shaft 6 is fixedly connected with a scraper 9 abutting against the sand pile plate 3, the outer wall of the dewatering tank 1 is connected with a sand discharge trough 10 flush with the sand pile plate 3, and the outer wall of the dewatering tank 1 is connected with a drainage pipe 11 located below the sand pile plate 3.

[0022] In this embodiment, the scraper 9 can increase the speed of sand discharge from the sand piling plate 3 to prevent sand accumulation, and the sand discharge trough 10 and the drain pipe 11 are convenient for discharging water and sand.

[0023] As a technical optimization solution of the utility model, the outer wall of the dehydration tank 1 is connected with a sand inlet pipe 8 , and one end of the sand inlet pipe 8 extends to the inner lower end of the dehydration tank 1 .

[0024] In this embodiment, the sand inlet pipe 8 is convenient for injecting the cleaned sand and water into the dehydration tank 1 together.

[0025] As a technical optimization solution of the utility model, a motor 12 is installed on the upper end surface of the dehydration tank 1 , and the output end of the motor 12 is fixedly connected to the rotating shaft 6 .

[0026] In this embodiment: the motor 12 is started, and the motor 12 drives the rotating shaft 6 to rotate, thereby providing power for the rotation of the rotating shaft 6 .

[0027] As a technical optimization solution of the utility model, the dehydration tank 1 and the bottom plate 2 are fixed by bolts 13 .

[0028] In this embodiment, the dehydration tank 1 and the bottom plate 2 are fixed by bolts 13 , so that the bottom plate 2 can be easily removed from the bottom of the dehydration tank 1 , thereby facilitating cleaning and maintenance of the dehydration tank 1 .

[0029] As a technical optimization solution of the present utility model, the spiral conveying blade 7 is configured as a mesh structure.

[0030] In this embodiment, the spiral conveying blades 7 are configured as a mesh structure, which can prevent the spiral conveying blades 7 from conveying water onto the sand piling plate 3 when conveying sand.

[0031] As a technical optimization solution of the present utility model, the bottom plate 2 is configured as a funnel structure.

[0032] In this embodiment, the bottom plate 2 is configured as a funnel structure, so that the sand after cleaning can be accumulated around the spiral conveying blade 7 .

[0033] Working principle: When in use, the cleaned sand and water are first continuously injected into the dewatering tank 1 through the sand inlet pipe 8, so that the cleaned sand and water fall onto the bottom plate 2. Since the bottom plate 2 is arranged as a funnel structure, the cleaned sand and water will accumulate around the spiral conveying blade 7 after falling onto the bottom plate 2. Then the motor 12 is started, and the motor 12 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the spiral conveying blade 7 and the scraper 9 to rotate. The spiral conveying blade 7 conveys the cleaned sand to the sand pile plate 3, and the scraper 9 discharges the sand through the sand discharge trough 10. At the same time, the water level in the dewatering tank 1 rises slowly, and then the water is discharged through the drain pipe 11. Through the physical properties of the sand, the sand can sink to the bottom plate 2 and will not float, so the cleaned sand will not be discharged with the water flow, and then the cleaned sand is dehydrated while reducing the loss of fine sand, thereby improving the recovery efficiency of fine sand.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A river sand cleaning, dehydration and recovery device, comprising a dehydration tank (1) and a bottom plate (2), characterized in that: A conical sand piling plate (3) is fixedly connected to the interior of the dewatering tank (1); a through hole (4) is formed through the upper end surface of the sand piling plate (3); a conveying cylinder (5) in communication with the through hole (4) is fixedly connected to the lower end surface of the sand piling plate (3); the other end of the conveying cylinder (5) extends to the lower end of the interior of the dewatering tank (1); a rotating shaft (6) located inside the conveying cylinder (5) is rotatably connected between the upper end of the interior of the dewatering tank (1) and the upper end surface of the bottom plate (2); and a spiral conveying blade (7) is fixedly connected to the outer wall of the rotating shaft (6).

2. A river sand cleaning, dehydration and recovery device according to claim 1, characterized in that: The outer wall of the rotating shaft (6) is fixedly connected with a scraper (9) abutting against the sand pile plate (3), the outer wall of the dewatering tank (1) is connected with a sand discharge groove (10) flush with the sand pile plate (3), and the outer wall of the dewatering tank (1) is connected with a drainage pipe (11) located below the sand pile plate (3).

3. The river sand cleaning, dehydration and recovery device according to claim 1, characterized in that: The outer wall of the dehydration tank (1) is connected to a sand inlet pipe (8), and one end of the sand inlet pipe (8) extends to the lower end of the interior of the dehydration tank (1).

4. The river sand washing, dehydration and recovery device according to claim 1, characterized in that: A motor (12) is installed on the upper end surface of the dehydration tank (1), and the output end of the motor (12) is fixedly connected to the rotating shaft (6).

5. The river sand washing, dehydration and recovery device according to claim 1, characterized in that: The dehydration tank (1) and the bottom plate (2) are fixed by bolts (13).

6. A river sand washing, dehydration and recovery device according to claim 1, characterized in that: The spiral conveying blade (7) is configured as a mesh structure.

7. The river sand washing, dehydration and recovery device according to claim 1, characterized in that: The bottom plate (2) is configured as a funnel structure.

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