River sand cleaning system
The multi-stage cleaning system, including screening, scrubbing, sand washing, and cyclone separation, solves the problem of incomplete river sand cleaning, enabling the production of efficient and clean river sand to meet the needs of high-quality concrete.
Patent Information
- Application Number
- CN202422783267.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing river sand washing processes cannot completely remove impurities, resulting in low-quality river sand that cannot meet the requirements of high-quality concrete.
A multi-stage cleaning system is adopted, including a screening device, a scrubbing machine, a sand washing machine, a hydrocyclone, and a dewatering screen. Combined with a water tank and a water supply mechanism, the river sand is efficiently cleaned through multiple cleaning and solid-liquid separation.
It achieves efficient cleaning of river sand, with a mud content of less than 0.2%, meeting the requirements for high-quality river sand and improving the quality of concrete.
Smart Images
Figure CN223543155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of river sand washing technology, and in particular to a river sand washing system. Background Technology
[0002] River sand is formed from natural stone under natural conditions through repeated impact and friction from water over a long period of time. Its composition is relatively complex, its surface is somewhat smooth, and it contains many impurities. River sand is odorless, while sea sand has a salty taste. River sand particles are smooth, relatively clean, and widely available, therefore it is widely used in building materials, often in the preparation of concrete.
[0003] River sand contains a large amount of gravel, sludge, and other impurities during mining. Therefore, directly mined river sand cannot be used directly and needs to be washed to remove these impurities, making it cleaner and improving the quality of concrete. Currently, the river sand washing process generally involves adding the mined river sand to a screening device for sieving to separate the sand from gravel, sludge, and other impurities, resulting in clean river sand. However, the composition of river sand is quite complex, and this washing process can only handle low-quality river sand. Some impurities will still be mixed in, resulting in incomplete washing. Furthermore, some mud will adhere to the surface of the river sand, making it less clean and resulting in lower-quality river sand. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of the existing technology by providing a river sand washing system.
[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:
[0006] A river sand washing system includes screening devices arranged sequentially along the material direction;
[0007] A scrubbing machine, which is connected to a screening device;
[0008] The first sand washing machine is connected to the scrubbing machine;
[0009] The first hydrocyclone is connected to the first sand washing machine;
[0010] A dewatering screen is connected to a first sand washing machine and is also connected to the first hydrocyclone.
[0011] The water supply system is connected to the scrubbing machine via a first water supply pipe and to the first sand washing machine via a second water supply pipe.
[0012] Preferably, a second sand washing machine is provided between the first sand washing machine and the dewatering screen, the first sand washing machine and the second sand washing machine are connected, the second sand washing machine and the dewatering screen are connected, the first hydrocyclone and the second sand washing machine are connected, and the water supply mechanism is connected to the second sand washing machine through a third water supply pipe.
[0013] Preferably, the second sand washing machine is connected to a second hydrocyclone, and the second hydrocyclone is connected to the dewatering screen.
[0014] Preferably, the water supply mechanism includes a water tank, and the first water supply pipe, the second water supply pipe and the third water supply pipe are all connected to the water tank. A return water pipe is also connected to the water tank, and the return water pipe is also connected to the first hydrocyclone and / or the second hydrocyclone.
[0015] Preferably, the return water pipe is also connected to a flocculation tank and a filter press for wastewater treatment.
[0016] Preferably, the water tank is also connected to a water supply pipe for replenishing water into the water tank.
[0017] Preferably, the screening device is a drum screen.
[0018] The beneficial effects of adopting the above technical solution are as follows:
[0019] 1. In this utility model, the mined river sand is added to the screening device for screening. After screening, the river sand is mixed with clean water in the pool and then processed in the scrubbing machine. After that, it is processed by the sand washing machine and the hydrocyclone in sequence and then enters the dewatering screen for dewatering. Clean river sand can be obtained, and the mud content of the river sand can be less than 0.2%, and the river sand is washed more thoroughly.
[0020] 2. In this utility model, the river sand screened by the screening device is mixed with clean water and then enters the scrubbing machine for scrubbing, which can remove the mud adhering to the surface of the river sand, resulting in cleaner river sand. Attached Figure Description
[0021] Figure 1 This is a system diagram of this utility model;
[0022] Figure 2 This is a system diagram of another embodiment of the present invention.
[0023] In the diagram: 1 is the screening device, 2 is the scrubbing machine, 3 is the first connecting pipe, 4 is the first sand washing machine, 5 is the second connecting pipe, 6 is the first hydrocyclone, 7 is the third connecting pipe, 8 is the dewatering screen, 9 is the fourth connecting pipe, 10 is the fifth connecting pipe, 11 is the water tank, 12 is the first water supply pipe, 13 is the second sand washing machine, 14 is the sixth connecting pipe, 15 is the seventh connecting pipe, 16 is the eighth connecting pipe, 17 is the second hydrocyclone, 18 is the return water pipe, 19 is the flocculation tank, 20 is the filter press, 21 is the second water supply pipe, 22 is the third water supply pipe, 23 is the water supply pipe, 24 is the ninth connecting pipe, and 25 is the tenth connecting pipe. Detailed Implementation
[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] like Figure 1As shown, a river sand washing system includes a screening device 1, a scrubbing machine 2, a first sand washing machine 4, a first hydrocyclone 6, and a dewatering screen 8 arranged sequentially along the material direction. The output end of the screening device 1 and the input end of the scrubbing machine 2 are connected by a first connecting pipe 3, and the output end of the scrubbing machine 2 and the input end of the first sand washing machine 4 are connected by a second connecting pipe 5. The first sand washing machine 4 has a first discharge end and a first liquid discharge end, and the first liquid discharge end of the first sand washing machine 4 is connected to the input end of the first hydrocyclone 6 by a third connecting pipe. The first discharge end of the first sand washing machine 4 is connected to the dewatering screen 8 via a fourth connecting pipe 9. The first hydrocyclone 6 and the dewatering screen 8 are connected via a fifth connecting pipe 10. A water tank 11 is also provided, which is connected to the first connecting pipe 3 via a first water supply pipe 12. Water in the water tank 11 can enter the first connecting pipe 3 through the first water supply pipe 12. A water pump is provided on the first water supply pipe 12, which can draw water from the water tank 11 to ensure smooth output of clean water. The flow rate of the water pump can reach 450 m³ / s. 3 / h to 500m 3 Between / h.
[0028] During the river sand washing process, the mined river sand is added to the screening device 1. The screening device 1 can screen the river sand and remove impurities such as gravel and slag. The screened river sand is then transported to the scrubbing machine 2 through the first connecting pipe 3. At this time, some mud may adhere to the surface of the screened river sand. Water in the water tank 11 enters the first connecting pipe 3 through the first water supply pipe 12 and mixes with the river sand screened by the screening device 1 to form a slurry. The river sand mixed with clean water then enters the scrubbing machine 2 through the first connecting pipe 3. In machine 2, an internal rotating agitator is installed, with multiple sets of blades on the agitator. When river sand and water enter machine 2, the rotation of the agitator causes friction between the river sand and between the river sand and the blades, removing mud and impurities from the surface of the river sand and making it cleaner. After being washed by machine 2, the river sand is discharged from the output end of machine 2 and enters the first sand washing machine 4 through the second connecting pipe 5. The first sand washing machine 4 has a water pump at its bottom, continuously injecting clean water from the bottom. During this process, lighter impurities in the river sand float to the surface of the water, while heavier sand sinks to the bottom and is discharged from the first discharge end at the bottom. The river sand washed by the first sand washing machine 4 is discharged from the first discharge end of the first sand washing machine 4 and transported to the dewatering screen 8 through the fourth connecting pipe 9 for dewatering. The wastewater from washing the river sand in the first sand washing machine 4 is discharged through the first liquid discharge end of the first sand washing machine 4 into the third connecting pipe 7 and finally enters the first hydrocyclone 6. The first hydrocyclone 6 is equipped with a second discharge end and a second liquid discharge end. The fifth connecting pipe 10 is connected to the second discharge end of the first hydrocyclone 6. After solid-liquid separation, the clean river sand enters the fifth connecting pipe 10 through the second discharge end of the first hydrocyclone 6 and finally enters the dewatering screen 8 for dewatering. The wastewater can be discharged from the second discharge end of the first hydrocyclone 6. The dewatering screen 8 can obtain dry and clean river sand after dewatering. The wastewater discharged from the first hydrocyclone 6 can be returned to the water tank 11 through the return water pipe 18 for recycling, thus saving water resources.
[0029] It should be noted that the first connecting pipe 3 can also be a chute. The screening device 1 is located above the scrubbing machine 2. After the river sand is discharged from the screening device 1, it can be transported to the scrubbing machine 2 along the chute by utilizing the height difference. In this embodiment, the connecting pipe can be equipped with a conveying pump as needed to transport the river sand to the next device.
[0030] like Figure 2As shown, in another embodiment, to ensure cleaner river sand washing, a second sand washing machine 13 is installed between the first sand washing machine 4 and the dewatering screen 8. A sand washing wheel is rotatably mounted on the second sand washing machine 13, and multiple screens are evenly arranged along the circumference of the sand washing wheel. During rotation, the screens can scoop up clean river sand, thus achieving the sand washing effect. The first discharge end of the first sand washing machine 4 and the input end of the second sand washing machine 13 are connected by a sixth connecting pipe 14. The first liquid discharge end of the first sand washing machine 4 is connected by a third connecting pipe 14. Connecting pipe 7 is connected to the first hydrocyclone 6. River sand washed by the first sand washing machine 4 is transported through the sixth connecting pipe 14 to the second sand washing machine 13 for further washing. Wastewater from the first sand washing machine 4 enters the first hydrocyclone 6 through the third connecting pipe 7 for solid-liquid separation. The second discharge end of the first hydrocyclone 6 is also connected to the second sand washing machine 13 through the ninth connecting pipe 24, transporting the obtained river sand to the second sand washing machine 13 for further washing. Wastewater is then transported through the return water pipe 18 to the return water tank 11 for reuse. The second sand washing machine 13 is equipped with a third discharge end and a third liquid discharge end. The third discharge end of the second sand washing machine 13 is connected to the dewatering screen 8 through a seventh connecting pipe 15, and the third liquid discharge end of the second sand washing machine 13 is connected to the input end of the second hydrocyclone 17 through an eighth connecting pipe 16. After being washed by the second sand washing machine 13, the river sand enters the dewatering screen 8 through the seventh connecting pipe 15 for dewatering, while the wastewater enters the second hydrocyclone 17 through the eighth connecting pipe 16. The second hydrocyclone 17 has a fourth discharge end. The second hydrocyclone 17 has a material end and a fourth discharge end. The fourth discharge end is connected to the dewatering screen 8 via a tenth connecting pipe 25. The fourth discharge end of the second hydrocyclone 17 is connected to the water tank 11 via a return water pipe 18. After solid-liquid separation by the second hydrocyclone 17, the river sand enters the dewatering screen 8 through the tenth connecting pipe 25 for dewatering, while the wastewater enters the water tank 11 through the return water pipe 18 for recycling. The river sand cleaned by the above system is cleaner and can meet the requirement of mud content of less than 0.2%, thus meeting the demand for high-quality river sand.
[0031] Furthermore, the return water pipe 18 is also connected to a flocculation tank 19 and a filter press 20 for wastewater treatment. The flocculation tank 19 can cause impurities in the wastewater to flocculate and settle. When the flocculated wastewater passes through the filter press 20, the impurities can be filtered out to obtain relatively clean wastewater. The filtered wastewater is then returned to the water tank 11 for reuse, realizing the recycling of water resources.
[0032] Furthermore, the water tank 11 is also connected to a second water supply pipe 21 and a third water supply pipe 22. The second water supply pipe 21 is connected to the first sand washing machine 4, and the third water supply pipe 22 is connected to the second sand washing machine 13. The first sand washing machine 4 and the second sand washing machine 13 are counter-current sand washing machines. The second water supply pipe 21 and the third water supply pipe 22 can transport the water in the water tank 11 to the first sand washing machine 4 and the second sand washing machine 13 for cleaning, so as to obtain cleaner river sand.
[0033] It should be noted that the connecting pipe can be omitted between two adjacent devices. The output end of the previous device can be directly connected to the input end of the next device, and the river sand can be directly fed into the next device for washing and screening.
[0034] Furthermore, a water supply pipe 23 is also connected to the water tank 11 for replenishing water into the water tank 11. The water supply pipe 23 can be directly connected to a tap water pipe.
[0035] Furthermore, the screening device 1 is a drum screen, but other screening equipment such as a vibrating screen can also be selected as needed.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A river sand washing system, characterized in that, Includes screening devices (1) arranged sequentially along the material direction; A scrubbing machine (2) is connected to a screening device (1); The first sand washing machine (4) is connected to the scrubbing machine (2); The first hydrocyclone (6) is connected to the first sand washing machine (4); A dewatering screen (8) is connected to the first sand washing machine (4), and the dewatering screen (8) is also connected to the first hydrocyclone (6); The water supply mechanism is connected to the scrubbing machine (2) via the first water supply pipe (12) and to the first sand washing machine (4) via the second water supply pipe (21).
2. The river sand washing system according to claim 1, characterized in that, A second sand washing machine (13) is provided between the first sand washing machine (4) and the dewatering screen (8). The first sand washing machine (4) and the second sand washing machine (13) are connected. The second sand washing machine (13) and the dewatering screen (8) are connected. The first hydrocyclone (6) and the second sand washing machine (13) are connected. The water supply mechanism is connected to the second sand washing machine (13) through a third water supply pipe (22).
3. The river sand washing system according to claim 2, characterized in that, The second sand washing machine (13) is connected to a second hydrocyclone (17), and the second hydrocyclone (17) is connected to the dewatering screen (8).
4. The river sand washing system according to claim 3, characterized in that, The water supply mechanism includes a water tank (11), and the first water supply pipe (12), the second water supply pipe (21) and the third water supply pipe (22) are all connected to the water tank (11). The water tank (11) is also connected to a return water pipe (18), which is also connected to the first hydrocyclone (6) and / or the second hydrocyclone (17).
5. A river sand washing system according to claim 4, characterized in that, The return water pipe (18) is also connected to a flocculation tank (19) and a filter press (20) for wastewater treatment.
6. The river sand washing system according to claim 4, characterized in that, The water tank (11) is also connected to a water supply pipe (23) for supplying water to the water tank (11).
7. The river sand washing system according to claim 1, characterized in that, The screening device (1) is a drum screen.