Impeller sand washer

Abstract

This utility model provides an impeller sand washing machine, belonging to the technical field of sand washing devices. The impeller sand washing machine includes: a water tank body, an impeller with buckets, and an electric drum. The water tank body is divided into a sand washing zone and a sedimentation zone, separated by a partition. The partition has an outlet for the sand washing zone. The electric drum houses a motor and a reducer, and its two ends are fixed to a support frame on the top of the water tank. The impeller is fitted onto the electric drum and rotates with it. The impeller consists of an impeller hub, flanges, a gear ring plate, an impeller ring plate with filter holes, and blades, forming a multi-bucket structure. The sedimentation zone has an inclined overflow trough with overflow ports on the side walls. This utility model integrates the motor and reducer within the electric drum, achieving direct impeller drive, reducing equipment size, improving sealing and resistance to harsh environments (muddy, humid), extending equipment life, and providing high transmission efficiency with energy-saving and noise-reducing effects. The zoned sedimentation allows useful fine sand to settle and prevent loss, reducing overflow trough blockage.

Description

Technical Field

[0001] This utility model belongs to the technical field of sand washing equipment, specifically relating to an impeller sand washing machine. Background Technology

[0002] Traditional sand washing machines generally use an external motor and reducer to drive the impeller. This structure has the following drawbacks: First, the external drive components are constantly exposed to the humid environment generated by sand washing operations, making the motor windings prone to moisture-induced short circuits and the reducer seals prone to aging and failure, resulting in a high equipment failure rate and a significant increase in maintenance and repair frequency. Second, external drive devices require additional installation space and often use belt drives, which not only generate significant noise pollution but also suffer from low transmission efficiency and belt slippage and wear. Regarding the sand washing process, traditional equipment lacks an effective solid-liquid separation design; sand washing wastewater overflows directly from the washing tank, containing a large amount of useful sand, causing fine sand loss and easily leading to pipe blockage. This invention addresses the above problems by proposing a compact sand washing device with an internal drive structure and a high-efficiency sedimentation system. Utility Model Content

[0003] The purpose of this utility model is to provide an impeller sand washing machine, which aims to solve the problems in the prior art where external drive components are exposed to a humid environment for a long time, which easily leads to failure, high maintenance costs, large space occupation by external drive, high noise and low efficiency of belt drive, direct overflow of sand washing wastewater containing a lot of fine sand, and easy blockage of pipes.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An impeller sand washing machine includes: a water tank body, an impeller with a bucket wheel, and an electric drum. The water tank body is divided into a sand washing zone and a sedimentation zone. Two sedimentation zones are symmetrically arranged. A partition is provided between the sand washing zone and the sedimentation zone. The sedimentation zone has an overflow port. The partition has a water outlet for the sand washing zone and a material inlet for the sand washing zone. A support frame is provided on the top of the water tank body. The two ends of the electric drum are fixed to the support frame. A motor and a reducer are provided inside the electric drum. The impeller is sleeved on the outer surface of the electric drum and rotates with the electric drum.

[0006] In a preferred embodiment of this utility model, the electric drum further includes a drum body, a coupling, a motor junction box, a first support base, a support shaft, a support flange, a motor center support flange, a reducer center support flange, an output flange, and a second support base. The output end of the motor is connected to the input end of the reducer via the coupling. The reducer is provided with the output flange, which drives the drum body to rotate. The motor center support flange and the reducer center support flange are installed on the inner circumferential wall of the drum body. One end of the motor is connected to the motor center support flange via a bearing and installed inside the drum body. The input shaft of the reducer passes through the reducer center support flange, and the other end of the motor is fixedly connected to the support shaft. The support shaft passes through the support flange, and the support shaft and the support flange are connected via a bearing. One end of the support shaft is located inside the first support base, which is provided with the motor junction box. The other end of the reducer is provided with a reducer planetary carrier, which is installed inside the second support base. The surface of the drum body is provided with a drum body flange, which is fixedly connected to the impeller by bolts.

[0007] As a preferred embodiment of this utility model, an overflow trough is provided above the sedimentation zone. The overflow trough is an inclined trough, the overflow port is provided on the side plate of the overflow trough, and a water outlet is provided at the end of the overflow trough.

[0008] In a preferred embodiment of this utility model, the impeller includes an impeller hub, a flange, a gear ring plate, an impeller ring plate with filter holes, and blades with filter holes. The inner side of the flange is fixedly connected to the electric drum, and the outer side of the flange is fixedly connected to one end of the impeller hub. The other end of the impeller hub is fixedly connected to the gear ring plate. The impeller ring plate with filter holes is fixedly connected between two gear ring plates. Multiple blades with filter holes are also fixedly connected to the outer side of the impeller ring plate with filter holes. The blades with filter holes, the impeller ring plate with filter holes, and the two gear ring plates enclose each other to form multiple wheel buckets.

[0009] As a preferred embodiment of this utility model, a support plate is fixedly connected between adjacent impeller hubs.

[0010] As a preferred embodiment of this utility model, the water tank body is further provided with a feeding trough, which is an inclined trough. A feeding port is provided on the lower side wall of the feeding trough, and a feeding trough clearing port is provided at the end of the feeding trough.

[0011] As a preferred embodiment of this utility model, a movable cover plate is provided above the sedimentation zone.

[0012] As a preferred embodiment of this utility model, a drain outlet is provided at the bottom of the sand washing area.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By embedding the motor and reducer inside the electric drum, the drive components are prevented from being directly exposed to a humid environment, and dust and mud are isolated. This allows for direct drive of the impeller, reducing the size of the equipment, improving sealing and resistance to harsh environments (dust, mud, and moisture), extending the equipment's lifespan, and providing high transmission efficiency while also achieving energy saving and noise reduction.

[0015] 2. The water tank is divided into a sand washing zone and a sedimentation zone. An overflow trough is installed above the sedimentation zone. The overflow trough is inclined, with overflow outlets on its side plates and a water outlet at its end. This zoned sedimentation reduces the impurities in the overflow water, preventing pipe blockage. The inclined trough design facilitates impurity settling, preventing blockage in the outlet trough. A movable cover is installed above the sedimentation zone for easy cleaning of the feed trough, outlet trough, and sedimentation zone. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is an elevation view of an impeller sand washing machine according to the present invention;

[0018] Figure 2 This utility model Figure 1 AA section view;

[0019] Figure 3 This is a top view of an impeller sand washing machine according to the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the electric roller of this utility model;

[0021] In the diagram: 1. Water tank body; 2. Impeller; 3. Electric drum; 4. Sand washing zone; 5. Sedimentation zone; 6. Baffle plate; 7. Overflow port; 8. Sand washing zone outlet; 9. Inlet; 10. Support frame; 11. Motor; 12. Reducer; 13. Tank body; 14. Coupling; 15. Motor junction box; 16. First support seat; 17. Support shaft; 18. Support flange; 19. Motor center support flange; 2 0. Reducer center support flange; 21. Output flange; 22. Second support seat; 23. Reducer planetary carrier; 24. Cylinder flange; 25. Overflow groove; 26. Water outlet; 27. Impeller hub; 28. Spread plate; 29. ​​Gear ring plate; 30. Impeller ring plate; 31. Blade; 32. Wheel bucket; 33. Support plate; 34. Feed chute; 35. Feed chute clearing port; 36. Movable cover plate; 37. Drain outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Example

[0024] Please see Figure 1-4 The present invention provides the following technical solution:

[0025] An impeller sand washing machine includes: a water tank body 1, an impeller 2 with a wheel bucket 32, and an electric drum 3. The water tank body 1 is divided into a sand washing zone 4 and a sedimentation zone 5. Two sedimentation zones 5 are symmetrically arranged. A partition 6 is set between the sand washing zone 4 and the sedimentation zone 5. The sedimentation zone 5 is provided with an overflow port 7. The partition 6 is provided with a water outlet 8 for the sand washing zone. The sand washing zone 4 is provided with a feed inlet 9. A support frame 10 is set on the top of the water tank body 1. The two ends of the electric drum 3 are fixed on the support frame 10. A motor 11 and a reducer 12 are provided inside the electric drum 3. The impeller 2 is sleeved on the outer surface of the electric drum 3 and rotates with the electric drum 3.

[0026] The electric drum 3 refers to the rotating component with a built-in drive mechanism. Specifically, it can be a cylindrical metal cylinder enclosing the motor 11 and the reducer 12, with power transmission achieved through flange connection. This structure isolates the drive component from the external environment, preventing dust and moisture intrusion. The main body 1 of the water tank is divided into a sand washing zone 4 and a sedimentation zone 5, which can be formed into independent chambers by welding steel plates. A partition 6 provides a sand washing zone outlet 8 to allow water to flow from the sand washing zone 4 into the sedimentation zone 5. The bottom end of the sand washing zone outlet 8 is flush with the bottom plate of the sedimentation zone 5. An overflow port 7 is located at the top of the sedimentation zone 5 and is used to discharge muddy wastewater. The support frame 10 is constructed of welded steel sections, with bearing seats at both ends to fix the electric drum 3 and ensure transmission stability. The impeller 2 is fixed to the outer surface of the electric drum 3 by bolt connection. The impeller 2 with the wheel bucket 32 ​​rotates with the drum to complete the sand washing.

[0027] Specifically, the sand enters the washing zone 4 through the inlet 9. The impeller 2 with the bucket wheel 32 rotates with the drum, driving the water flow to form a strong vortex. Under the action of the vortex, the sand and gravel are violently stirred, rolled, and collided. Impurities such as mud and stone powder on the surface of the sand and gravel particles are peeled off under the intense physical friction and collision. At the same time, the water flow carries away the mud and fine particles, thus achieving sand and gravel washing. The peeled mud and some fine sand flow into the sedimentation zone 5 through the outlet 8 of the washing zone. The sedimentation zone is relatively still, and the heavier fine sand settles to the bottom of the sedimentation zone 5. After accumulating to a certain amount, the fine sand flows back to the washing zone 4 from the outlet 8, allowing the useful fine sand to settle and avoid loss, and participate in the washing process again. Finally, it has the opportunity to be discharged as finished sand, greatly reducing the loss of fine sand. The lighter mud, stone powder and other impurities rise with the water flow and are discharged from the overflow outlet 7, achieving impurity separation. The electric drum 3 is driven by an internal motor 11 via a reducer 12, which in turn drives the impeller 2 to rotate synchronously. The support frame 10 supports the weight of the electric drum 3 and the impeller 2 and maintains the axial positioning. After thorough washing and removal of most impurities, the sand and gravel particles (mixed with water at this point) settle under gravity. As the wheel bucket 32 ​​rotates, it scoops the sand and gravel mixture that has settled at the bottom into the bucket. When the wheel bucket 32 ​​rotates to its highest point and begins to tilt downwards, the washed sand and gravel are discharged from the sand washing machine by gravity and transported to the next process.

[0028] Compared to existing technologies, traditional equipment with externally mounted drive components suffers from insufficient protection. This solution achieves fully enclosed transmission through a built-in electric roller 3, preventing malfunctions caused by environmental corrosion. Existing sand washing machines use a single water tank structure, which prevents effective sedimentation of fine sand, resulting in its loss. This solution, through a zoned design, creates a highly efficient turbulent sand washing zone 4 and a relatively static sedimentation zone 5, perfectly resolving the contradiction between cleaning intensity and impurity / fine sand separation, ultimately achieving the goal of reducing fine sand loss and improving overall cleaning efficiency. Traditional belt drives suffer from large space occupation and efficiency loss. This solution adopts a direct-drive structure to reduce transmission links and save equipment layout space.

[0029] Through the above technical solutions, this application solves the problem of external drive components being susceptible to environmental corrosion and thus causing failure, reducing equipment maintenance frequency and costs. The built-in drive structure reduces energy loss in the transmission process and improves power transmission efficiency. The separation design between the sand washing zone 4 and the sedimentation zone 5 achieves solid-liquid separation, reducing fine sand loss and preventing pipe blockage.

[0030] This application further proposes that the electric drum 3 also includes a drum body 13, a coupling 14, a motor junction box 15, a first support base 16, a support shaft 17, a support flange 18, a motor center support flange 19, a reducer center support flange 20, an output flange 21, and a second support base 22. The output end of the motor 11 is connected to the input end of the reducer 12 through the coupling 14. The reducer 12 is provided with an output flange 21, which drives the drum body 13 to rotate. The motor center support flange 19 and the reducer center support flange 20 are installed on the inner circumferential wall of the drum body 13. One end of the motor 11 is connected to the motor center support flange 20 through a bearing. The support flange 19 is installed inside the cylinder 13. The input shaft of the reducer 12 passes through the reducer center support flange 20. The other end of the motor 11 is fixedly connected to the support shaft 17. The support shaft 17 passes through the support flange 18. The support shaft 17 and the support flange 18 are connected by a bearing. One end of the support shaft 17 is located in the first support seat 16. The first support seat 16 is equipped with a motor junction box 15. The other end of the reducer 12 is equipped with a reducer planetary carrier 23. The reducer planetary carrier 23 is installed in the second support seat 22. The surface of the cylinder 13 is equipped with a cylinder flange 24. The cylinder flange 24 is fixedly connected to the impeller 2 by bolts.

[0031] The coupling 14 is a mechanical transmission component used to directly connect the motor 11 and the reducer 12, eliminating the space occupation problem caused by external belt drive. The motor center support flange 19 is an annular mounting structure fixed to the inner wall of the cylinder 13, which can be implemented by welding or bolting, used to fix the motor 11 body inside the cylinder 13 to form a closed protection. The reducer center support flange 20 is a reducer mounting base connected to the inner wall of the cylinder 13, which can be implemented by welding a flange to the cylinder 13, used to achieve coaxial positioning of the reducer 12 input shaft and the cylinder 13. The cylinder flange 24 is an annular connecting piece welded to the outer circumference of the cylinder 13, which can be implemented by using a carbon steel flange with bolt holes, used to achieve a detachable connection between the impeller 2 and the drive system.

[0032] Specifically, the motor 11 and the reducer 12 form an axial direct connection structure through the coupling 14, shortening the power transmission path to the internal space of the cylinder 13. The motor 11 body is rigidly connected to the inner wall of the cylinder 13 through the motor center support flange 19, and the reducer 12 achieves coaxial installation of its input shaft with the cylinder 13 through the reducer center support flange 20. The bolted connection between the cylinder flange 24 and the impeller 2 allows for the complete disassembly of the impeller 2, facilitating maintenance. The design of integrating the motor junction box 15 into the first support base 16 keeps the electrical connection points in a closed and protected state.

[0033] A drive unit is formed between the motor 11, coupling 14, and reducer 12 to directly drive the cylinder 13 to rotate, while the motor junction box 15 supplies power to the motor 11. When the motor 11 is working, it drives the reducer 12 through the coupling 14, causing the internal gear ring on the reducer 12 to rotate. The internal gear ring drives the output flange 21 to rotate, thereby causing the output flange 21 to drive the cylinder 13 to rotate. The output flange 21 is connected to the cylinder 13.

[0034] Compared to existing technologies, traditional external drive solutions require separate motor mounting platforms and belt drive mechanisms, resulting in increased equipment footprint and decreased transmission efficiency. This solution integrates the drive components entirely within the cylinder 13, achieving a compact layout of the drive system through a double-flange support structure, thus reducing space requirements compared to external drive solutions.

[0035] Through the above technical solution, this application achieves fully enclosed protection of the drive system in dusty and humid environments, avoiding the problem of increased failure rate caused by environmental corrosion of external components.

[0036] This application further proposes that an overflow trough 25 be provided above the sedimentation zone 5. The overflow trough 25 is an inclined trough, the overflow port 7 is provided on the side plate of the overflow trough 25, and the water outlet 26 is provided at the end of the overflow trough 25.

[0037] The overflow trough 25 refers to the trough structure located above the sedimentation zone 5. It can be constructed by welding steel plates to form an inclined channel, with a slope controlled within the range of 5° to 15°. The inclined design prevents clogging of the overflow trough 25. The overflow port 7 refers to the opening on the side wall of the overflow trough 25, which can be implemented using a toothed structure. The outlet hole 26 refers to the drain hole located at the bottom end of the overflow trough 25, used to discharge overflow water.

[0038] Specifically, in the sedimentation zone 5, after the sand is washed and separated by sedimentation, the lighter mud and powder impurities will flow into the overflow trough 25 from the overflow outlet 7 with the water flow. The overflow trough 25 is set with a certain slope to avoid blockage, and finally the overflow water is discharged from the drain outlet.

[0039] Compared to existing technologies, traditional sand washing machines use a direct overflow method from the top of the washing tank, and the overflow trough is horizontally designed, causing impurities to be directly discharged with the water flow, leading to blockage of the overflow trough. This solution uses an inclined trough structure to create a water flow to flush away impurities, thus avoiding blockage of the overflow trough.

[0040] This application further proposes that the impeller 2 includes an impeller hub 27, a flange 28, a gear ring plate 29, an impeller ring plate 30 with filter holes, and blades 31 with filter holes. The inner side of the flange 28 is fixedly connected to the electric drum 3, and the outer side of the flange 28 is fixedly connected to one end of the impeller hub 27. The other end of the impeller hub 27 is fixedly connected to the gear ring plate 29. The impeller ring plate 30 with filter holes is fixedly connected between two gear ring plates 29. Multiple blades 31 with filter holes are also fixedly connected to the outer side of the impeller ring plate 30 with filter holes. The blades 31 with filter holes, the impeller ring plate 30 with filter holes, and the two gear ring plates 29 enclose and form multiple wheel buckets 32.

[0041] The impeller hub 27 is an annular support structure connecting the spoke plate 28 and the gear ring plate 29. It can be achieved through welding or bolting, and is used to transmit the driving force of the electric drum 3 and enhance the overall rigidity of the impeller 2. The spoke plate 28 is a plate-like structure connecting the electric drum 3 and the impeller hub 27. It can be made by cutting and forming a steel plate and welding it to the impeller hub 27, or by bolting it to the electric drum 3. The gear ring plate 29 is an annular plate with mounting holes, which can be manufactured using casting or stamping processes. It is used to fix the impeller ring plate 30 with filter holes and form the sidewall of the wheel bucket 32. The impeller ring plate 30 with filter holes is an annular filter plate with through holes, which can be processed using laser cutting or punching processes. It is used to separate sand and mud during rotation. The blades 31 with filter holes are plate-like structures with through holes, which can be formed by stamping and then welded. They are used to accelerate the discharge of water and impurities through centrifugal force when lifting materials.

[0042] Specifically, the inner side of the blade 28 is rigidly connected to the surface of the electric drum 3 by bolts, and the outer side is welded to the impeller hub 27 to form a stable support frame. The other end of the impeller hub 27 is fixed to the gear ring plate 29 by welding. An impeller ring plate 30 with filter holes is welded between the two gear ring plates 29. Blades 31 with filter holes are evenly welded circumferentially to the outer side of the impeller ring plate 30, forming a wheel bucket 32 ​​together with the gear ring plate 29. When the impeller 2 rotates, the sand and gravel are lifted to a high position by the wheel bucket 32, and the mud and water are initially discharged through the filter holes on the impeller ring plate 30; subsequently, the filter holes on the blades 31 further separate fine impurities under the action of centrifugal force, avoiding mud accumulation. The sand and gravel in the wheel bucket 32 ​​are discharged from the sand washing machine by gravity and transported to the next process.

[0043] Compared with existing technologies, traditional sand washing machine impellers 2 use solid blades 31, resulting in poor sand and gravel dewatering. In contrast, this solution uses blades 31 with filter holes to achieve dewatering during material lifting, and the rigid connection structure between the impeller hub 27 and the flange 28 improves the operational stability of the impeller 2.

[0044] Through the above technical solution, this application solves the problem of low sand washing and dewatering efficiency of traditional impeller 2, and realizes efficient separation of sand and gravel from mud and water.

[0045] This application further proposes to fix a support plate 33 between adjacent impeller hubs 27.

[0046] Among them, the support plate 33 refers to the plate-shaped component that connects two adjacent impeller hubs 27 laterally. Specifically, it can be achieved by welding steel plates or fastening with bolts. Its function is to constrain the radial displacement of the impeller hub 27 during rotation by forming a rigid connection network.

[0047] Specifically, the support plate 33 is welded to the side of adjacent impeller hubs 27, forming a transverse rigid frame with multiple impeller hubs 27. The grid structure formed by the impeller hubs 27 and the support plate 33 can withstand higher torque while suppressing radial deformation of the impeller ring plate 30 caused by high-speed rotation.

[0048] Compared with existing technologies, traditional impellers rely solely on the longitudinal connection between the impeller hub 27 and the flange 28, lacking a transverse support structure, which makes the impeller ring plate 30 prone to wavy torsion during high-speed rotation. This solution establishes a transverse rigid connection through the support plate 33, enabling the impeller 2 to form a spatial truss structure as a whole, effectively offsetting the alternating stress during rotation.

[0049] Through the above technical solutions, this application can prevent the impeller hub 27 from breaking due to local overload, reduce fatigue cracks at the connection between the impeller ring plate 30 and the blade 31, reduce abnormal vibration during equipment operation, and extend the service life of the impeller 2 under high load conditions.

[0050] This application further proposes that the main body 1 of the water tank is also provided with a feeding trough 34, the feeding trough 34 is an inclined trough, the feeding port 9 is provided on the lower side wall of the feeding trough 34, and the feeding trough clearing port 35 is provided at the end of the feeding trough 34.

[0051] The feed trough 34 refers to the channel structure used to guide materials into the sand washing zone 4, which can be implemented by welding steel plates to form an inclined trough. The inclined trough can be implemented with an inclination angle in the range of 5 to 10 degrees, using gravity to promote the material to slide down. The feed inlet 9 refers to the opening set on the lower side wall of the inclined trough, which can be implemented with a rectangular or circular hole structure, used to guide the material into the sand washing zone 4. The feed trough clearing port 35 refers to the openable structure set at the end of the inclined trough, which can be implemented with a flange cover plate structure, to facilitate the cleaning of accumulated material or foreign objects in the trough.

[0052] Specifically, the material to be washed is evenly fed into the top of the feed trough, and the material slides naturally towards the feed inlet 9 under the action of gravity through the inclined surface of the chute. The feed inlet 9 is located on the side wall to prevent the material from falling vertically and impacting the impeller 2 area. The clearing port at the end of the feed trough 34 is located at the end of the material flow path. When the material is partially blocked due to agglomeration or foreign objects, the obstruction can be directly removed by opening the clearing port without disassembling the entire trough structure.

[0053] Compared to existing technologies, traditional sand washing machines use a circular feed pipe, which easily leads to material accumulation and blockage inside the pipe, requiring machine shutdown and component disassembly for cleaning. This solution optimizes the material flow path through an inclined trough, reduces the impact on the impeller 2 at the side inlet 9, and provides a quick maintenance channel at the end clearing port, significantly improving feeding continuity and equipment maintainability.

[0054] Through the above technical solution, this application effectively reduces the probability of material jamming during the feeding process and shortens equipment maintenance downtime.

[0055] This application further proposes to install an movable cover plate 36 above the sedimentation zone 5.

[0056] Among them, the movable cover plate 36 refers to a cover structure that can be moved and opened and closed. Specifically, it can be implemented using a sliding rail structure, and the opening and closing state of the cover plate can be controlled manually.

[0057] Specifically, the movable cover 36 covers the top of the sedimentation zone 5, remaining closed during sand washing operations to prevent external dust or debris from falling into the water. When it is necessary to clean the sediment or repair equipment, the movable cover 36 can be opened, directly exposing the internal space of the sedimentation zone 5, facilitating manual operation or entry of mechanical tools. The opening and closing of the movable cover 36 does not require disassembling the entire structure; simply moving the cover itself is sufficient to switch the sedimentation zone 5 between closed and open states.

[0058] Compared to existing technologies, traditional sand washing machines typically employ a fixed top cover or an uncovered design for the sedimentation zone 5. The former requires the entire top cover structure to be removed for maintenance, while the latter cannot prevent external contaminants from entering. The movable cover 36 replaces the fixed top cover with a movable structure, retaining the closed protective function while avoiding the cumbersome process of complete disassembly. At the same time, compared to an open design, it significantly reduces the risk of external impurities entering the sedimentation zone 5.

[0059] Through the above technical solution, this application can effectively isolate the sedimentation zone 5 from the external environment, reduce the impact of pollutants on water quality, and simplify the operation steps for cleaning and maintaining the sedimentation zone 5, thus shortening equipment downtime.

[0060] This application further proposes to set a sewage outlet 37 at the bottom of the sand washing zone 4.

[0061] The bottom of the sand washing zone 4 refers to the lowest point of the sand washing zone 4. The drain outlet 37 refers to the opening structure located at the bottom of the sand washing zone 4, which can be implemented using a cover plate structure with a flange, for completely emptying the water tank and discharging sediment during maintenance.

[0062] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An impeller sand washing machine, comprising: The water tank body (1), the impeller (2) with a wheel bucket (32), and the electric drum (3) are characterized in that the water tank body (1) is divided into a sand washing zone (4) and a sedimentation zone (5). Two sedimentation zones (5) are symmetrically arranged. A partition (6) is arranged between the sand washing zone (4) and the sedimentation zone (5). The sedimentation zone (5) is provided with an overflow port (7). The partition (6) is provided with a sand washing zone outlet (8). The sand washing zone (4) is provided with a feed inlet (9). A support frame (10) is provided on the top of the water tank body (1). The two ends of the electric drum (3) are fixed on the support frame (10). A motor (11) and a reducer (12) are provided inside the electric drum (3). The impeller (2) is sleeved on the outer surface of the electric drum (3). The impeller (2) rotates with the electric drum (3).

2. The impeller sand washing machine according to claim 1, characterized in that, The electric drum (3) also includes a drum body (13), a coupling (14), a motor junction box (15), a first support base (16), a support shaft (17), a support flange (18), a motor center support flange (19), a reducer center support flange (20), an output flange (21), and a second support base (22). The output end of the motor (11) is connected to the input end of the reducer (12) through the coupling (14). The reducer (12) is provided with the output flange (21), which drives the drum body (13) to rotate. The motor center support flange (19) and the reducer center support flange (20) are installed on the inner circumferential wall of the drum body (13). One end of the motor (11) is connected to the motor center support flange (19) through a bearing. Inside the cylinder (13), the input shaft of the reducer (12) passes through the reducer center support flange (20), the other end of the motor (11) is fixedly connected to the support shaft (17), the support shaft (17) passes through the support flange (18), the support shaft (17) and the support flange (18) are connected by a bearing, one end of the support shaft (17) is located in the first support seat (16), the first support seat (16) is provided with a motor junction box (15), the other end of the reducer (12) is provided with a reducer planetary carrier (23), the reducer planetary carrier (23) is installed in the second support seat (22), the surface of the cylinder (13) is provided with a cylinder flange (24), the cylinder flange (24) and the impeller (2) are fixedly connected by bolts.

3. The impeller sand washing machine according to claim 2, characterized in that, An overflow trough (25) is provided above the sedimentation zone (5). The overflow trough (25) is an inclined trough. The overflow port (7) is provided on the side plate of the overflow trough (25). A water outlet (26) is provided at the end of the overflow trough (25).

4. The impeller sand washing machine according to claim 3, characterized in that, The impeller (2) includes an impeller hub (27), a flange (28), a gear ring plate (29), an impeller ring plate (30) with filter holes, and blades (31) with filter holes. The inner side of the flange (28) is fixedly connected to the electric drum (3), and the outer side of the flange (28) is fixedly connected to one end of the impeller hub (27). The other end of the impeller hub (27) is fixedly connected to the gear ring plate (29). The impeller ring plate (30) with filter holes is fixed between two gear ring plates (29). Multiple blades (31) with filter holes are also fixedly connected to the outer side of the impeller ring plate (30). The blades (31) with filter holes, the impeller ring plate (30) with filter holes, and the two gear ring plates (29) together form multiple wheel buckets (32).

5. The impeller sand washing machine according to claim 4, characterized in that, A support plate (33) is fixed between adjacent impeller hubs (27).

6. The impeller sand washing machine according to claim 5, characterized in that, The main body (1) of the water tank is also provided with a feeding trough (34), which is an inclined trough. A feeding port (9) is provided on the lower side wall of the feeding trough (34), and a feeding trough clearing port (35) is provided at the end of the feeding trough (34).

7. The impeller sand washing machine according to claim 6, characterized in that, A movable cover plate (36) is provided above the sedimentation zone (5).

8. The impeller sand washing machine according to claim 7, characterized in that, The bottom of the sand washing area (4) is provided with a sewage outlet (37).

Images