Gravel sorting and cleaning all-in-one machine for civil engineering

Abstract

The invention discloses a gravel sorting and cleaning all-in-one machine for civil engineering, and relates to the technical field of gravel treatment equipment. The device comprises a sorting and cleaning unit and a water circulation unit, the sorting and cleaning unit comprises a vertical rotational flow cleaning barrel, a partition plate in the barrel divides an inner cavity into a central stone cleaning cavity and an annular sand-water mixing cavity, screening holes are formed in the partition plate, and a first impeller in the cleaning barrel drives water flow to form rotational flow. The water circulating unit comprises a rotational flow grit chamber, the grit chamber is communicated with the cleaning cylinder through a water flow channel and a circulating pipe, a second impeller in the grit chamber drives water flow to form reverse rotational flow, and the two water flows form opposite flushing in the stone cleaning cavity; the power transmission device drives the double impellers to synchronously and reversely rotate, the grit chamber realizes grit-water separation and water flow reuse, and closed-loop water circulation is formed; the device integrates sorting and cleaning functions, does not need to be transferred, is thorough in cleaning, water-saving, environment-friendly and compact in structure, improves the treatment efficiency, and meets the requirements of small construction sites.

Description

Technical Field

[0001] This invention relates to the field of sand and gravel processing equipment technology, specifically to an integrated sand and gravel sorting and cleaning machine for civil engineering. Background Technology

[0002] As a core raw material in civil engineering, the purity and cleanliness of sand and gravel directly affect the quality of the project. Current sand and gravel processing often employs a step-by-step operation mode of "sorting equipment + cleaning equipment," which has significant limitations: First, the process is cumbersome, requiring sand and gravel to be sorted by screening equipment before being transported to cleaning equipment. This transportation process is time-consuming and labor-intensive, resulting in low overall processing efficiency. Second, it consumes a large amount of water, as the cleaning process often uses open water supply, leading to direct discharge of wastewater, which not only wastes water resources but also easily causes environmental pollution. Third, the cleaning effect is poor; traditional cleaning equipment has a single water flow direction and lacks counter-flushing and disturbance effects, making it difficult to completely remove dirt adhering to the surface of the sand and gravel, and the sorted sand and gravel are prone to secondary mixing. Fourth, the structure is fragmented, with sorting and cleaning equipment arranged separately, occupying a large space, resulting in high equipment procurement and installation costs, and limiting its suitability for small construction sites.

[0003] To address the aforementioned issues, there is an urgent need to develop a sand and gravel treatment equipment that integrates sorting and cleaning, reuses water, provides excellent cleaning results, and has a compact structure, thereby filling the gap in efficient sand and gravel treatment equipment for civil engineering projects. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned problems and provide an integrated sand and gravel sorting and cleaning machine for civil engineering. To achieve the above objective, this invention adopts the following technical solution: A sand and gravel sorting and cleaning integrated machine for civil engineering includes a sorting and cleaning unit and a water circulation unit; The sorting and cleaning unit includes a vertically arranged vortex cleaning cylinder. The vortex cleaning cylinder is provided with a partition structure, which divides the inner cavity into a stone cleaning chamber located in the center and an annular sand-water mixing chamber surrounding the stone cleaning chamber. The water circulation unit includes a vortex grit chamber, the top of which is connected to the top of the vortex cleaning cylinder through a water flow channel, and the bottom of the annular sand-water mixing chamber is connected to the vortex grit chamber through a circulation pipe. The vortex settling tank is configured to generate water flow in a first rotation direction, and the vortex cleaning cylinder is configured to generate water flow in a second rotation direction. The first rotation direction is opposite to the second rotation direction, so that the water flow flowing from the top of the vortex settling tank into the top of the vortex cleaning cylinder and the water flow in the vortex cleaning cylinder form a countercurrent in the stone cleaning chamber area.

[0005] As an improvement, the separation structure is a partition plate fixed inside the cyclone washing cylinder. The partition plate has multiple screening holes to allow sand and water to pass through and to prevent stones from entering the annular sand-water mixing chamber.

[0006] As an improvement, the swirling cleaning cylinder is provided with a first rotating shaft, on which a first impeller is mounted; the first impeller is located in the stone cleaning chamber, and its rotation plane corresponds to the screening hole area on the partition plate, which is used to enhance the swirling and counter-flushing strength of the water flow in the stone cleaning chamber.

[0007] As an improvement, the bottom of the annular sand-water mixing chamber is tapered to form a sand-water mixing hopper; the bottom of the stone washing chamber is provided with a discharge port, and an electrically controlled valve is provided at the discharge port.

[0008] As an improvement, the cyclone sedimentation tank includes a cyclone separation main chamber, a central guide chamber, and a bottom sand collection and discharge hopper connected sequentially from top to bottom; the circulation pipe is tangentially or approximately tangentially connected to the side wall of the cyclone separation main chamber.

[0009] As an improvement, the vortex sedimentation tank is provided with a second rotating shaft, on which a second impeller is installed. The second impeller is located in the central guide cavity to enhance the vortex effect in the vortex sedimentation tank and promote the sedimentation of sand particles.

[0010] As an improvement, a power transmission device is also included; the power transmission device includes an electric motor, a driving wheel, a first driven wheel, and a second driven wheel; the electric motor drives the driving wheel, and the driving wheel simultaneously engages the first driven wheel and the second driven wheel; the first driven wheel and the second driven wheel are located on the left and right sides of the driving wheel, respectively, the first driven wheel drives a first rotating shaft, and the second driven wheel drives a second rotating shaft, thereby causing the cyclone cleaning cylinder to rotate synchronously in opposite directions with the impeller in the cyclone grit chamber.

[0011] As an improvement, the side wall of the cyclone separator main chamber is provided with a tangential water inlet pipe for introducing the sand-water mixture to be treated; the bottom of the sand collection and discharge hopper is provided with a sand discharge port or a sand lifting pipe interface.

[0012] As an improvement, the top area of ​​the vortex cleaning cylinder is provided with a clean water or circulating water inlet, which is connected to the overflow weir or outlet at the top of the vortex grit chamber.

[0013] As an improvement, the overflow weir is provided with a water outlet pipe, and the water outlet pipe is provided with a water outlet valve.

[0014] The advantages of this invention are: 1. This invention integrates sorting and cleaning, significantly improving efficiency: It integrates sorting and cleaning functions into a cyclone cleaning cylinder, and completes sand and gravel sorting and cleaning simultaneously through partition plate screening and cyclone flushing, eliminating the need for transfer procedures, simplifying the processing flow, greatly improving the efficiency of large-scale processing, while also having a compact structure, reducing the space occupied, and being suitable for small construction sites.

[0015] 2. The reverse vortex flushing design of this invention upgrades the cleaning effect: The innovative use of dual impellers synchronous reverse drive makes the water flow of the cleaning cylinder and the sedimentation tank flow in opposite directions, forming a strong flushing water flow in the stone cleaning chamber. The friction and collision intensity of the stones is increased, the dirt is removed more thoroughly, the cleaning effect is improved compared with traditional equipment, and secondary pollution is avoided.

[0016] 3. This invention features a closed-loop water circulation system that is water-saving and environmentally friendly: wastewater is recycled, purified, and reused through a vortex grit chamber, improving water recycling efficiency, significantly reducing water consumption, avoiding wastewater discharge that pollutes the environment, and conforming to the concept of green construction. Attached Figure Description

[0017] Figure 1 This is a bottom view of the structure of a sand and gravel sorting and cleaning integrated machine for civil engineering in Example 1.

[0018] Figure 2 This is a left view of a sand and gravel sorting and cleaning machine for civil engineering in Example 1.

[0019] Figure 3 Example 1 Figure 2 The cross-sectional view at point AA.

[0020] Figure 4 This is a top view of a sand and gravel sorting and cleaning integrated machine for civil engineering in Example 1.

[0021] Figure 5 This is an internal structural diagram of a sand and gravel sorting and cleaning integrated machine for civil engineering in Example 1.

[0022] Figure 6 This is a structural diagram of the power assembly in Example 1.

[0023] The diagram is labeled as follows: 1. Sorting and cleaning unit; 11. Cyclone washing cylinder; 12. Divider plate; 121. Screening hole; 13. Stone washing chamber; 14. Annular sand-water mixing chamber; 15. First rotating shaft; 16. First impeller; 17. Sand-water mixing hopper; 18. Discharge port; 2. Water circulation unit; 21. Cyclone grit chamber; 211. Cyclone separation main chamber; 212. Central guide chamber; 213. Sand collection and discharge hopper; 22. Water outlet pipe; 23. Circulation pipe; 24. Second rotating shaft; 25. Second impeller; 26. Tangential water inlet pipe; 27. Overflow weir; 28. Sand discharge port; 3. Power transmission device; 31. Electric motor; 32. Driving wheel; 33. First driven wheel; 34. Second driven wheel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention 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 the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of the present invention, "multiple" means at least two.

[0028] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 the present invention according to the specific circumstances.

[0029] The present invention will now be described in detail and specifically through specific embodiments to enable a better understanding of the invention. However, the following embodiments do not limit the scope of protection of the present invention. Example

[0030] This embodiment discloses an integrated sand and gravel sorting and cleaning machine for civil engineering.

[0031] like Figures 1 to 6As shown, this embodiment includes a sorting and cleaning unit 1, a water circulation unit 2, a power transmission device 3, and auxiliary structures. The detailed explanation of the structure, connection relationship, function, and cooperative logic of each part is as follows: (a) Core processing unit: Sorting and cleaning unit 1 like Figure 1 , Figure 3 , Figure 5 As shown; the sorting and cleaning unit 1 is centered on a vertically arranged cyclone washing cylinder 11, which combines sand and gravel sorting and cleaning functions. Through the partition structure and cyclone counter-flushing design, it achieves simultaneous processing of sand and gravel. The structure and function are as follows: 1. Main structure: The cyclone cleaning cylinder 11 is a vertical cylindrical structure made of high-strength wear-resistant steel with a smooth inner wall to reduce water flow resistance. The cylinder is equipped with a partition structure (i.e., partition plate 12), which is fixed in the middle of the cyclone cleaning cylinder 11 and divides the inner cavity of the cylinder into two parts - the stone cleaning chamber 13 located in the center (used to contain and clean stones) and the annular sand-water mixing chamber 14 surrounding the stone cleaning chamber 13 (used to collect sand and wastewater), so as to achieve physical separation of sand and stones and avoid secondary mixing.

[0032] 2. Screening and separation function: Multiple screening holes 121 are provided on the partition plate 12. The diameter of the screening holes 121 is set according to the target sand and gravel particle size (only sand, water and mud are allowed to pass through, and stones are blocked from entering the annular sand and water mixing chamber 14). When the stones are washed in the central chamber, the stripped mud and sand particles are carried by the water flow through the screening holes 121 and enter the annular chamber to complete the preliminary sand and gravel separation.

[0033] 3. Swirl-flow counter-current reinforcement structure: A first rotating shaft 15 is provided inside the swirling washing cylinder 11, which vertically penetrates the stone washing chamber 13. A first impeller 16 is installed on the shaft, and the rotating plane of the impeller corresponds to the area of ​​the screening holes 121 on the partition plate 12. When the first impeller 16 rotates, it drives the water flow in the stone washing chamber 13 to generate a swirling flow in a second rotation direction. At the same time, it forms a counter-current with the reverse water flow flowing in from the swirling grit chamber 21, which greatly enhances the water flow disturbance intensity. The stones rub and collide with each other in the counter-current water flow, and the surface dirt is quickly peeled off, significantly improving the cleaning effect. At the same time, the counter-current water flow can accelerate the sand and dirt to enter the annular cavity through the screening holes 121, improving the sorting efficiency.

[0034] 4. Discharge and collection structure: The bottom of the annular sand-water mixing chamber 14 is tapered to form a sand-water mixing hopper 17. The tapered structure can guide the sand-water mixture to converge at the bottom, which is convenient for subsequent circulation and conveying. The bottom of the stone washing chamber 13 is provided with a discharge port 18. An electrically controlled valve is installed at the discharge port 18. After cleaning, the stone can be discharged through the electrically controlled valve to realize automated discharge.

[0035] (II) Water-saving core unit: Water circulation unit 2 like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown; the water circulation unit 2, with the vortex grit chamber 21 as its core, realizes wastewater recycling, grit separation and water reuse, forming a closed-loop water circulation, which greatly reduces water consumption. Its structure and function are as follows: 1. Main structure of the cyclone sedimentation tank 21: It includes a cyclone separation main chamber 211, a central guide chamber 212, and a bottom sand collection and discharge hopper 213 connected sequentially from top to bottom. The overall structure is a vertical cone shape, adapted to the requirements of cyclone sedimentation. The cyclone separation main chamber 211 is the core area for sand-water separation. Its sidewall is tangentially or approximately tangentially connected to the circulation pipe 23 at the bottom of the annular sand-water mixing chamber 14, so that the sand-water mixture enters the main chamber tangentially, enhancing the cyclone effect. The central guide chamber 212 is located below the main chamber and is used to guide the water flow to separate from the settled sand particles. The sand collection and discharge hopper 213 has a cone structure and is equipped with a sand discharge port 28 or a sand lifting pipe interface at the bottom, which facilitates the collection and discharge of settled sand particles.

[0036] 2. Enhanced vortex settling structure: A second rotating shaft 24 is provided inside the vortex grit chamber 21. The second rotating shaft 24 vertically passes through the central guide cavity 212, and a second impeller 25 is installed on the shaft. When the second impeller 25 rotates, it drives the water flow in the grit chamber to generate a vortex in the first rotation direction (opposite to the second rotation direction in the vortex cleaning cylinder 11). Under the action of centrifugal force, sand particles and sludge settle towards the pool wall and finally fall into the sand collection and discharge hopper 213, while the clean water rises and gathers at the top of the grit chamber.

[0037] 3. Water circulation path: The top of the vortex grit chamber 21 is connected to the top of the vortex cleaning cylinder 11 through a water flow channel. The top of the grit chamber is equipped with an overflow weir 27 or a water outlet. The top area of ​​the vortex cleaning cylinder 11 is equipped with a clean water or circulating water inlet, which is connected to the overflow weir 27 / water outlet. The clean water purified by the grit chamber flows into the vortex cleaning cylinder 11 for sand and gravel cleaning, forming a closed-loop water circulation of "cleaning-recycling-purification-reuse". The overflow weir 27 is equipped with a water outlet pipe 22, and a water outlet valve is installed on the water outlet pipe 22. The water outlet valve is normally closed. When there is too much water in the grit chamber and the water quality cannot meet the cleaning requirements, the water outlet valve is opened to discharge some wastewater and replenish fresh water to ensure the cleaning effect.

[0038] 4. Feeding structure: The side wall of the cyclone separator main chamber 211 is provided with a tangential water inlet pipe 26 for replenishing clean water, and the circulation pipe 23 is used to introduce the original sand-water mixture to be treated. After the mixture enters the main chamber along the tangential direction, it is initially separated with the cyclone movement, the sand particles settle, and the water flow participates in the circulation.

[0039] (III) Power Core Unit: Power Transmission Device 3 like Figure 4 , Figure 6As shown, the power transmission device 3 provides power for the synchronous counter-rotation of the two impellers, ensuring that the water flow in the cyclone cleaning cylinder 11 and the cyclone grit chamber 21 flows in opposite directions. Its structure and function are as follows: The power transmission device 3 includes a motor 31, a driving wheel 32, a first driven wheel 33, and a second driven wheel 34. The motor 31 is fixedly mounted on the equipment frame, and its output shaft is rigidly connected to the driving wheel 32, driving the driving wheel 32 to rotate. The driving wheel 32 simultaneously meshes with the first driven wheel 33 and the second driven wheel 34, which are located on the left and right sides of the driving wheel 32, respectively, forming a symmetrical meshing structure. The first driven wheel 33 is driven by the first rotating shaft 15, and the second driven wheel 34 is driven by the second rotating shaft 24. Since the driven wheels are located on both sides of the driving wheel 32, when the driving wheel 32 rotates, it drives the two driven wheels to rotate in opposite directions, thereby driving the first impeller 16 and the second impeller 25 to rotate synchronously in opposite directions. Ultimately, this causes the vortex cleaning cylinder 11 and the water flow in the vortex grit chamber 21 to form a reverse vortex, achieving counter-flushing enhanced cleaning.

[0040] (iv) Auxiliary structures The equipment is equipped with an integrated frame, and the cyclone washing cylinder 11, cyclone sedimentation tank 21, and power transmission device 3 are all fixed on the frame. The bottom of the frame is equipped with anti-slip and shock-absorbing feet to ensure that the equipment is stable and does not shake during operation. The electric control valves and motor 31 are electrically connected to the external controller, which can realize automated control of material discharge, start and stop and water flow adjustment, reducing the intensity of manual operation.

[0041] (V) Collaborative Working Logic Throughout the Entire Process 1. Equipment Start-up and Water Circulation Preheating: Start the motor 31, which drives the first and second impellers 25 to rotate synchronously in opposite directions through the power transmission device 3. A first-direction vortex is generated in the vortex sedimentation tank 21, and a second-direction vortex (reverse) is generated in the vortex cleaning cylinder 11. Close the outlet valve to ensure closed-loop water circulation. The water level in the vortex sedimentation tank 21 gradually rises and flows into the vortex cleaning cylinder 11 through the water flow channel, forming a stable reverse flushing water flow.

[0042] 2. Sand and water feeding and preliminary separation: The sand and water mixture to be treated is fed into the cyclone sedimentation tank 21 through the tangential water inlet pipe 26 of the cyclone separation main chamber 211. The mixture enters the main chamber through the circulation pipe 23. Under the cyclone action of the second impeller 25, the sand particles and mud settle to the tank wall and fall into the sand collection and discharge hopper 213. The preliminarily purified water gathers upward and flows into the cyclone washing cylinder 11 through the overflow weir 27.

[0043] 3. Sand and gravel sorting and enhanced cleaning: After the clean water enters the cyclone washing cylinder 11, it forms an opposing vortex driven by the first impeller 16. The stones in the material to be treated are blocked in the central stone washing chamber 13. Under the mutual friction between the opposing water flow and the stones, the surface dirt is quickly peeled off. The peeled dirt and sand particles enter the annular sand and water mixing chamber 14 through the screening holes 121 of the partition plate 12, completing the sand and gravel sorting.

[0044] 4. Sand-water circulation and secondary purification: The sand-water mixture in the annular sand-water mixing chamber 14 is collected by the bottom sand-water mixing hopper 17 and flows tangentially into the vortex sedimentation tank 21 through the circulation pipe 23. Under the action of vortex, the sand particles and the clean water are separated for the second time. The clean water continues to be circulated and reused, while the sand particles fall into the sand collection and discharge hopper 213.

[0045] 5. Discharge and sand discharge: After the stones are cleaned, open the electric control valve to discharge the cleaned stones through the discharge port 18; the sand particles in the sand collection and discharge hopper 213 are discharged through the sand discharge port 28 or the sand lifting pipe interface to complete the entire process of sand and gravel sorting and cleaning; if the water quality deteriorates, open the water outlet valve to discharge some wastewater and add new water to maintain the cleaning effect.

[0046] The parameters adapted in this embodiment are as follows: the diameter of the cyclone cleaning cylinder 11 is 1.2m and the height is 2.5m; the diameter of the sieve hole 121 of the partition plate 12 is 5mm; the diameter of the cyclone grit chamber 21 is 1.5m and the height is 4.8m; the diameters of the first and second impellers 25 are 0.8m and 1.0m respectively; and the power of the motor 31 is 15kW.

[0047] Specific work procedures: 1. Equipment debugging and start-up: Fix the equipment next to the mixing station and support it firmly with the support legs; check the sealing of each pipeline connection, the flexibility of impeller rotation and the status of the electrical control valves; start the motor 31, and drive the first and second impellers 25 to rotate synchronously in opposite directions through the power transmission device 3 (the first impeller 16 rotates clockwise and the second impeller 25 rotates counterclockwise); close the water outlet valve, inject clean water into the vortex sedimentation tank 21 to preheat the hot water circulation system, and enter the operation state after the water flow stabilizes and forms a reverse flush.

[0048] 2. Sand and water feeding and preliminary separation: The sand and water mixture (containing stones, sand and mud) recovered from the mixing plant is fed into the cyclone sedimentation tank 21 at a flow rate of 50 m³ / h through the tangential water inlet pipe 26. The mixture enters the cyclone separation main chamber 211 tangentially. Under the cyclone action of the second impeller 25, the sand and mud settle towards the tank wall under the action of centrifugal force and fall into the sand collection and discharge hopper 213. The preliminarily purified clear water flows upward to the overflow weir 27.

[0049] 3. Sorting, cleaning and counter-flushing enhancement: Clean water flows into the vortex cleaning cylinder 11 through the overflow weir 27 and water flow channel, forming a counter-flushing with the clockwise vortex driven by the first impeller 16; the stones in the sand-water mixture are blocked in the central cleaning chamber by the partition plate 12, and the surface dirt is quickly peeled off under the mutual friction and collision between the counter-flushing water flow and the stones; the peeled dirt and sand particles enter the annular sand-water mixing chamber 14 through the 5mm sieve hole 121, completing the precise sorting of sand and gravel.

[0050] 4. Recycling and Sand Collection: The sand-water mixture in the annular sand-water mixing chamber 14 is collected by the bottom conical sand-water mixing hopper 17 and flows tangentially into the vortex settling tank 21 through the circulation pipe 23. The sand particles and clean water are separated for the second time. The clean water continues to be recycled for washing. The sand particles in the sand collection and discharge hopper 213 are transported to the sand silo by the lifting equipment through the sand lifting pipe interface.

[0051] 5. Discharge and equipment maintenance: After the stones are cleaned, the electric control valve is opened through the controller, and the cleaned stones are discharged into the stone silo through the discharge port 18. After the operation is completed, the motor 31 is turned off, the water outlet valve is opened to discharge the residual wastewater, the cyclone washing cylinder 11 and the sedimentation tank are rinsed, and the residual impurities on the screening holes 121 and the impeller are cleaned. After drying, they are ready for use.

[0052] Precautions 1. Before operation, check the pipeline sealing, impeller rotation status and screen hole 121 unobstructed to avoid sand particles clogging the screen hole 121 and affecting the sorting efficiency; 2. Regularly clean the sand particles in the sand collection and discharge hopper 213 to avoid excessive sand accumulation affecting the sand settling effect. At the same time, check the wear of the impeller and replace it in time if the wear is serious. 3. Adjust the water flow rate according to the mud content of the sand and gravel. When the mud content is high, the impeller speed can be increased appropriately to enhance the counter-current strength. If necessary, open the outlet valve to add fresh water. 4. Do not approach rotating parts while the equipment is running. Disconnect the power before maintenance to avoid accidents. Take waterproof protection for the motor during rainy weather to prevent short circuits.

[0053] The specific embodiments of the present invention have been described in detail above, but they are merely examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A sand and gravel sorting and cleaning integrated machine for civil engineering, characterized in that, It includes a sorting and cleaning unit (1) and a water circulation unit (2); The sorting and cleaning unit (1) includes a vertically arranged vortex cleaning cylinder (11). The vortex cleaning cylinder (11) is provided with a partition structure to divide the inner cavity into a stone cleaning chamber (13) located in the center and an annular sand and water mixing chamber (14) surrounding the stone cleaning chamber (13). The water circulation unit (2) includes a vortex grit chamber (21), the top of which is connected to the top of the vortex cleaning cylinder (11) through a water flow channel, and the bottom of the annular sand-water mixing chamber (14) is connected to the vortex grit chamber (21) through a circulation pipe (23). The vortex grit chamber (21) is configured to generate water flow in a first rotation direction, and the vortex cleaning cylinder (11) is configured to generate water flow in a second rotation direction. The first rotation direction is opposite to the second rotation direction, so that the water flow flowing from the top of the vortex grit chamber (21) into the top of the vortex cleaning cylinder (11) and the water flow in the vortex cleaning cylinder (11) form a countercurrent in the stone cleaning chamber (13) area.

2. The integrated sand and gravel sorting and cleaning machine for civil engineering according to claim 1, characterized in that, The separation structure is a partition plate (12) fixed inside the cyclone cleaning cylinder (11), and the partition plate (12) has multiple screening holes (121).

3. The integrated sand and gravel sorting and cleaning machine for civil engineering according to claim 2, characterized in that, The cyclone cleaning cylinder (11) is provided with a first rotating shaft (15), and a first impeller (16) is installed on the first rotating shaft (15); the first impeller (16) is located in the stone cleaning chamber (13), and its rotation plane corresponds to the screening hole (121) area on the partition plate (12).

4. The integrated sand and gravel sorting and cleaning machine for civil engineering according to claim 3, characterized in that, The bottom of the annular sand-water mixing chamber (14) is tapered to form a sand-water mixing bucket (17); the bottom of the stone washing chamber (13) is provided with a discharge port (18), and an electrically controlled valve is provided at the discharge port (18).

5. A sand and gravel sorting and cleaning integrated machine for civil engineering according to any one of claims 1-4, characterized in that, The vortex sedimentation tank (21) includes a vortex separation main chamber (211), a central guide chamber (212), and a bottom sand collection and discharge hopper (213) connected sequentially from top to bottom; the circulation pipe (23) is tangentially or approximately tangentially connected to the side wall of the vortex separation main chamber (211).

6. The integrated sand and gravel sorting and cleaning machine for civil engineering according to claim 5, characterized in that, The vortex sedimentation tank (21) is provided with a second rotating shaft (24), and a second impeller (25) is installed on the second rotating shaft (24). The second impeller (25) is located in the central guide cavity (212).

7. A sand and gravel sorting and cleaning integrated machine for civil engineering according to claim 6, characterized in that, It also includes a power transmission device (3); the power transmission device (3) includes a motor (31), a drive wheel (32), a first driven wheel (33) and a second driven wheel (34); the motor (31) drives the drive wheel (32), and the drive wheel (32) simultaneously engages the first driven wheel (33) and the second driven wheel (34); the first driven wheel (33) and the second driven wheel (34) are located on the left and right sides of the drive wheel (32), respectively, the first driven wheel (33) drives the first rotating shaft (15), and the second driven wheel (34) drives the second rotating shaft (24), so that the cyclone cleaning cylinder (11) and the impeller in the cyclone sedimentation tank (21) rotate synchronously in opposite directions.

8. A sand and gravel sorting and cleaning integrated machine for civil engineering according to claim 5, characterized in that, The side wall of the cyclone separator main chamber (211) is provided with a tangential water inlet pipe (26); the bottom of the sand collection and discharge hopper (213) is provided with a sand discharge port (28) or a sand lifting pipe interface.

9. A sand and gravel sorting and cleaning integrated machine for civil engineering according to claim 5, characterized in that, The top area of ​​the vortex cleaning cylinder (11) is provided with a clean water or circulating water inlet, which is connected to the overflow weir (27) or outlet at the top of the vortex grit chamber (21).

10. A sand and gravel sorting and cleaning integrated machine for civil engineering according to claim 9, characterized in that, The overflow weir (27) is provided with a water outlet pipe (22), and the water outlet pipe (22) is provided with a water outlet valve.

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