Intelligent sand washer with self-impurity circulating structure

Abstract

The present application relates to the technical field of sand washing, in particular to an intelligent sand washer with a self-dispelling circulating structure, comprising a sand washing frame and a concave distributing frame, the distributing frame is arranged at the frame opening of the inner wall of one side of the sand washing frame, a plurality of distributing mechanisms are arranged at both ends of the inside of the distributing frame respectively, a distributing and washing assembly is arranged on the inner wall of the other side of the sand washing frame, and a sedimentation tank is arranged at the bottom of one side of the sand washing frame; the present application adopts a multi-stage collaborative sorting method, on the basis of magnetic separation of impurities of sand and gravel in the pretreatment stage, further realizes effective separation of different particle sizes, which not only avoids the problems of mixed particle size of sand and gravel and mesh blockage, but also provides great convenience for subsequent cleaning operations; in addition, in the cleaning stage, the combination of the nested arrangement of the grading screen frame and the dynamic swing is adopted, which not only effectively reduces the loss rate of sand and gravel and the blockage rate of sewage, but also significantly improves the friction cleaning efficiency of sand and gravel.

Description

Technical Field

[0001] This invention relates to the field of sand washing technology, specifically to an intelligent sand washing machine with a self-draining and circulating structure. Background Technology

[0002] With the rapid growth in demand for sand and gravel aggregates in fields such as construction, casting, and road engineering, the need for technological iteration of sand and gravel processing equipment is becoming increasingly urgent. Sand washing machines are key equipment for sand and gravel aggregate processing, mainly used to remove impurities (mud, dust, metal particles, etc.) from sand and gravel, and to achieve sand particle classification and cleaning through hydraulic or mechanical action. Spiral sand washing machines are usually used for sand washing operations.

[0003] For example, a spiral fine sand washing machine with patent number CN220678792U can adjust the working angle of the sand washing machine in a timely manner according to the slope of the ground at the site where the sand washing machine is used through an angle adjustment component. Although it can achieve multi-angle sand conveying and cleaning, its spiral structure sand washing structure still has certain limitations:

[0004] (1) Relying solely on a single rotary conveying structure without pretreatment of sand and gravel not only easily leads to insufficient sand and gravel sorting accuracy, reduced sorting efficiency of mixed-size sand and gravel, and decreased finished sand grade matching rate, but also easily results in serious sand and gravel loss and increased equipment blockage.

[0005] (2) Due to the gap between the spiral blades and the tank, sand and gravel particles are easily stuck. When the mud content of the sand and gravel is high, the frequency of shutdown will increase. In addition, the spiral blades are easily worn during long-term operation of the spiral sand washing machine, which will increase the operating cost and reduce the sand washing efficiency of the equipment. Summary of the Invention

[0006] The purpose of this invention is to adopt a multi-stage collaborative sorting method to further achieve effective separation of different particle sizes after magnetic separation and impurity removal of sand and gravel in the pretreatment stage. This not only avoids the problems of mixed sand and gravel particle sizes and mesh clogging, but also provides great convenience for subsequent cleaning operations. In addition, in the cleaning stage, a combination of nested grading screen frames and dynamic oscillation is adopted, which not only effectively reduces the loss rate of sand and gravel and the sewage clogging rate, but also significantly improves the friction cleaning efficiency of sand and gravel.

[0007] The objective of this invention can be achieved through the following technical solution: an intelligent sand washing machine with a self-draining and circulating structure, including a sand washing frame and a concave material distribution frame. The material distribution frame is located at the frame opening on one side of the inner wall of the sand washing frame. A multi-stage material distribution mechanism is respectively provided at both ends inside the material distribution frame. A material distribution and washing component is provided on the other side of the inner wall of the sand washing frame.

[0008] A sedimentation tank is provided at the bottom of one side of the sand washing frame, and a drain valve pipe is provided between the sedimentation tank and the sand washing frame. An L-shaped water inlet valve pipe is provided at the top of the sedimentation tank, and one end of the L-shaped water inlet valve pipe extends into the sand washing frame.

[0009] The multi-stage material distribution mechanism includes a primary material distribution component and a secondary material distribution component. The primary material distribution component includes a screening vertical frame, and the secondary material distribution component includes a screening horizontal frame. The two sides of the front and rear ends of the screening horizontal frame are respectively fixedly connected to the inner wall of the corresponding material distribution frame through connecting rods, and the screening vertical frame is fixedly installed on one side of the top of the screening horizontal frame.

[0010] Furthermore, a feeding inclined cavity is provided at the top of the screening frame, and a multi-component feeding trough is provided at the bottom of one side of the feeding cavity. An inclined concave magnetic separator is hinged to the outer wall of the screening frame corresponding to the bottom of the feeding cavity, and a reverse inclined concave impurity removal screen is provided below the magnetic separator. A discharge cavity is provided at the bottom of the screening frame, and a secondary distribution port is provided at the top of one side of the discharge cavity corresponding to the position of the impurity removal screen. A waste platform is provided at the bottom of the side of the screening frame.

[0011] Furthermore, the bottom of the screening frame is sloped, and a material distribution guide plate is provided at the top opening of the screening frame. The width of the material distribution guide plate is three-quarters of the inner width of the screening frame. The extension end of the material distribution guide plate has a bending structure, and several sets of V-shaped material distribution grooves are evenly arranged on the top surface of the material distribution guide plate. The front and rear ends of the screening frame are fixedly connected to the inner wall of the material distribution frame by connecting rods, and a spiral rotating rod is provided through two adjacent sets of connecting rods. One end of one set of spiral rotating rods is provided with a dual-axis motor, and the output end of the dual-axis motor and the other end of the spiral rotating rod are both provided with transmission wheels. A transmission belt is sleeved between the two sets of transmission wheels.

[0012] Furthermore, one end of one of the spiral rotating rods away from the dual-axis motor is fixedly equipped with a drive gear, and a driven gear is movably arranged at the rear end of the screening frame and at the bottom position of the drive gear via the machine base. The screening frame meshes with the driven gear, and an eccentric rotating wheel is fixedly connected to the side of the driven gear away from the machine base via a rotating rod. A sliding frame is provided through the inside of the screening frame near the top, and the bottom surface of the sliding frame is in contact with the top surface of the material distribution guide plate.

[0013] Furthermore, the front and rear ends of the sliding frame extend to the outside of the screening cross frame and are threaded onto the outside of the corresponding spiral rotating rod. The inner groove of the sliding frame is rotatably connected to the spiral rotating rod, and a motor is provided between the spiral rotating rod and the inner wall of the rear end of the inner groove of the sliding frame. The spiral rotating rod is threaded onto the outside of the spiral rotating rod at the front end of the inner groove, and a material-pushing plate with a tapered bottom is fixedly installed at the bottom of the spiral plate. The material-pushing plate is adapted to the inside of the V-shaped material distribution groove and is flush with the bottom.

[0014] Furthermore, the material separating and washing assembly includes a cylinder, which is located inside the sand washing frame at the top of the inner wall on the side away from the material separating frame. A limiting push plate is fixedly installed at the output end of the cylinder via a push rod. A concave structure feeding frame is movably connected to the end of the limiting push plate away from the push rod. The bottom surface of the feeding frame is set as an inwardly inclined screen surface. A fine material frame and a coarse material frame are arranged side by side inside the feeding frame.

[0015] Furthermore, limit blocks are fixedly installed at the front and rear positions of the top of the feeding frame near the limit push plate. The two sets of limit blocks slide inside the vertical grooves set at the front and rear ends of the limit push plate. A damping spring shock absorber is provided between the bottom surface of the limit block and the bottom inner wall of the vertical groove. The sliding shafts set at the center of the front and rear ends of the feeding frame are slidably connected to the limit grooves set at the front and rear inner walls of the distribution frame. The middle section of the limit groove is set with an inclined downward structure and extends to the bottom end of the screening frame.

[0016] Furthermore, the fine material frame is fixedly connected to the coarse material frame, and the top of the coarse material frame extends 7cm beyond the top of the fine material frame. The front and rear parts of the coarse material frame away from the fine material frame are respectively fitted onto the outside of the guide rod set inside the feeding frame by fixedly installed movable blocks. The outside of the guide rod is provided with spring coils between the two sets of movable blocks and the corresponding inner wall of the feeding frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention utilizes the magnetic separator of the primary material distribution component to automatically adsorb magnetic impurities such as metal particles in sand and gravel materials, and simultaneously separates fine dust using a sieve frame, thereby improving the purity of the sand and gravel materials and reducing interference from impurities in subsequent processing. The secondary material distribution component further separates the sand and gravel materials, employing a variable cross-section V-shaped material distribution trough and a spiral-driven sliding frame. Dynamic flow guidance facilitates the separation of sand and gravel of different particle sizes, avoiding particle size mixing and mesh clogging, and greatly facilitating subsequent cleaning operations.

[0019] 2. In addition to material separation, this invention further separates and cleans the separated material particles. It is combined with the movement of a multi-stage material distribution mechanism, a cylinder-driven limit push plate linked to the feeding frame, and an eccentric wheel intermittently presses against the coarse material frame, so as to realize the reciprocating swing of the fine material frame and the coarse material frame. The dynamic swing cleaning facilitates the improvement of friction cleaning efficiency. At the same time, the progressively decreasing mesh size of the feeding frame, fine material frame and coarse material frame helps to reduce the sand and gravel loss rate and the sewage blockage rate. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a top view of the overall structure of the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of the primary material distribution component of the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of the combination of the material distribution frame structure and the secondary material distribution component of the present invention;

[0025] Figure 5 This is a three-dimensional schematic diagram of the sliding frame structure of the present invention;

[0026] Figure 6 This is a three-dimensional schematic diagram of the material sorting and washing component of the present invention;

[0027] Figure 7 This is a cross-sectional view of the limiting push plate and feeding frame assembly of the present invention.

[0028] In the diagram: 1. Sand washing frame; 2. Material distribution frame; 3. Multi-stage material distribution mechanism; 31. Primary material distribution assembly; 310. Screening vertical frame; 311. Magnetic separation frame; 312. Impurity removal screen frame; 313. Waste platform; 32. Secondary material distribution assembly; 320. Screening horizontal frame; 321. Material distribution guide plate; 322. Spiral rotor; 323. Dual-shaft motor; 324. Transmission wheel; 325. Drive gear; 326. From... 327. Moving gear; 328. Eccentric wheel; 329. Sliding frame; 330. Spiral rotating rod II; 331. Motor I; 332. Spiral sleeve; 333. Material pusher; 4. Material distribution and washing assembly; 41. Cylinder; 42. Limiting push plate; 43. Feeding frame; 44. Fine material frame; 45. Coarse material frame; 46. Limiting block; 47. Damping spring shock absorber ring; 48. Guide rod; 49. Spring coil; 5. Sedimentation tank. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-4 As shown, the intelligent sand washing machine with a self-draining and recycling structure includes a sand washing frame 1 and a concave material distribution frame 2. The material distribution frame 2 is set at the frame opening on one side of the inner wall of the sand washing frame 1. The two ends of the material distribution frame 2 are respectively provided with a multi-stage material distribution mechanism 3. The other side of the inner wall of the sand washing frame 1 is provided with a material distribution and washing component 4.

[0031] A sedimentation tank 5 is installed at the bottom of one side of the sand washing frame 1, and a drain valve pipe is installed between the sedimentation tank 5 and the sand washing frame 1. An L-shaped water inlet valve pipe is installed at the top of the sedimentation tank 5, and one end of the L-shaped water inlet valve pipe extends into the interior of the sand washing frame 1. The wastewater after washing is introduced into the sedimentation tank 5 through the drain valve pipe for sedimentation treatment, which forces a small amount of sand and gravel dust particles to settle at the bottom of the sedimentation tank 5. The settled water is then reintroduced into the sand washing frame 1 for reuse using the L-shaped water inlet valve pipe.

[0032] The multi-stage material distribution mechanism 3 includes a first-stage material distribution component 31 and a second-stage material distribution component 32. The first-stage material distribution component 31 includes a screening vertical frame 310, and the second-stage material distribution component 32 includes a screening horizontal frame 320. The two sides of the front and rear ends of the screening horizontal frame 320 are respectively fixedly connected to the inner wall of the corresponding material distribution frame 2 through connecting rods, and the screening vertical frame 310 is fixedly installed on one side of the top of the screening horizontal frame 320.

[0033] The top of the screening frame 310 is provided with a feeding inclined cavity, and a multi-component feeding trough is provided at the bottom of one side of the feeding cavity. An inclined concave magnetic separator 311 is hinged to the outer wall of the screening frame 310 corresponding to the bottom of the feeding cavity. A reverse inclined concave impurity removal screen frame 312 is provided below the magnetic separator 311. The bottom of the screening frame 310 is provided with a discharge cavity. A secondary feeding port is provided at the top of one side of the discharge cavity corresponding to the position of the impurity removal screen frame 312. A waste material platform 313 is provided at the bottom of the side of the screening frame 310.

[0034] Primary screening stage: First, the sand and gravel are introduced into the feeding inclined cavity and dispersed into the magnetic separation frame 311 through the multi-component material trough. Magnetic impurities will be adsorbed by the magnetic separation frame 311, realizing automatic impurity removal; while non-magnetic sand and gravel particles slide down the magnetic separation frame 311 to the surface of the reverse inclined impurity removal screen frame 312, and are screened out by the mesh screen to remove fine dust and fall straight into the surface of the waste platform 313. The impurity-removed sand and gravel particles are then fed back into the screening vertical frame 310 through the secondary material distribution port, waiting to be fed into the screening horizontal frame 320 for further sorting.

[0035] The bottom of the screening frame 320 is set with an incline. The top opening of the screening frame 320 is provided with a material distribution guide plate 321. The width of the material distribution guide plate 321 is three-quarters of the inner width of the screening frame 320. The extension end of the material distribution guide plate 321 is provided with a bending structure. Several sets of V-shaped material distribution grooves are set at equal intervals on the top surface of the material distribution guide plate 321. The front and rear ends of the screening frame 320 are fixedly connected to the inner wall of the material distribution frame 2 through connecting rods. A spiral rotating rod 322 is provided through the connection between two adjacent sets of connecting rods.

[0036] One set of spiral rotors 322 is equipped with a dual-axis motor 323 at its end, and both the output end of the dual-axis motor 323 and the end of the other set of spiral rotors 322 are equipped with transmission wheels 324. The two sets of transmission wheels 324 are connected together by a transmission belt. A sliding frame 328 is installed through the inside of the screening frame 320 near the top, and the bottom surface of the sliding frame 328 is in contact with the top surface of the material distribution guide plate 321. The front and rear ends of the sliding frame 328 extend to the outside of the screening frame 320 and are threaded onto the outside of the corresponding spiral rotors 322.

[0037] Advanced screening stage: The sand and gravel material purified by magnetic separation is spread on the working surface of the distribution guide plate 321. The dual-shaft motor 323 is started to drive one set of spiral rotors 322 to rotate. Through the cooperation of the transmission belt and the transmission wheel 324, it is ensured that the two sets of spiral rotors 322 keep rotating synchronously. When the spiral rotors 322 rotate, they drive the externally threaded sliding frame 328 to make reciprocating linear motion along the inside of the screen frame 320. The bottom surface of the sliding frame 328 is in contact with the top surface of the distribution guide plate 321, which facilitates the directional movement of the sand and gravel particles on the surface.

[0038] The V-shaped material distribution trough adopts a variable cross-section trapezoidal structure design. The trough opening size is set according to the target particle size. Small particles of sand and gravel are evenly distributed inside the V-shaped material distribution trough. When the material particles exceed the opening of the V-shaped material distribution trough, large particles of sand and gravel continue to move and eventually slide down the inclined surface at the bottom of the material distribution guide plate 321 to be discharged. This completes the secondary volume screening stage, so that the large and small sand and gravel particles can be separated and cleaned in the subsequent process, and the problems of particle size mixing and mesh blockage caused by a single screen can be reduced.

[0039] The primary material distribution component 31 is used to remove magnetic impurities and fine dust from the sand and gravel, effectively improving the purity of the sand and gravel materials and reducing the interference of impurities in subsequent processing. Then, the secondary material distribution component 32 is used to effectively separate sand and gravel of different sizes, avoiding the problems of particle size mixing and mesh clogging, and providing great convenience for subsequent cleaning operations.

[0040] Example 2: Please refer to Figure 4 , Figure 5 As shown, a spiral rod 329 is rotatably connected inside the inner groove of the slide frame 328, and a motor 330 is provided between the spiral rod 329 and the inner wall of the rear end of the inner groove of the slide frame 328. A spiral sleeve 331 is threadedly sleeved on the outside of the spiral rod 329 at the front end of the inner groove, and a material-pushing piece 332 with a tapered bottom is fixedly installed at the bottom of the spiral sleeve 331. The material-pushing piece 332 is adapted to the inside of the V-shaped material distribution groove and is flush with the bottom.

[0041] This embodiment is based on the post-processing process of Embodiment 1 to achieve precise sorting and directional conveying of fine sand particles: when large sand particles roll down along the bent end of the distribution guide plate 321, the fine sand particles are evenly distributed in several sets of V-shaped distribution grooves by gravity. When the sliding frame 328 moves linearly along the surface of the distribution guide plate 321, it forces the material feeding plate 332 to intermittently stop at the opening of each set of V-shaped distribution grooves.

[0042] The synchronous start motor 330 drives the spiral rod 329 to rotate. The spiral sleeve 331 moves along the axial direction of the spiral rod 329 under the drive of the spiral rod 329. The conical material feeding plate 332 at the bottom of the spiral sleeve 331 performs reciprocating material feeding operation in the V-shaped material distribution groove.

[0043] It is worth noting that the end of the conical feeding plate 332 is designed to be at the same height as the bottom surface of the V-shaped material distribution trough, which ensures feeding efficiency and avoids wear on the trough. Through the continuous rotation of the spiral rotating rod 329, the feeding plate 332 pushes the fine sand particles from inside the V-shaped material distribution trough outward until the particles naturally slide down the inclined surface of the trough bottom to the guide surface at the bottom of the screening frame 320, ensuring that the fine sand particles enter the next cleaning unit after being guided by the screening frame 320, and complete the fine processing operation after grading and screening.

[0044] Example 3: Please refer to Figure 2 , Figure 6 - Figure 7 As shown, the material sorting and washing assembly 4 includes a cylinder 41. The cylinder 41 is located inside the sand washing frame 1 and at the top of the inner wall on one side away from the material sorting frame 2. A limit push plate 42 is fixedly installed at the output end of the cylinder 41 by a push rod. A concave structure feeding frame 43 is movably connected to the end of the limit push plate 42 away from the push rod. The bottom surface of the feeding frame 43 is set as an inwardly inclined screen surface. A fine material frame 44 and a coarse material frame 45 are arranged side by side inside the feeding frame 43.

[0045] Limiting blocks 46 are fixedly installed at the front and rear positions of the top of the feeding frame 43 near the limiting push plate 42. The two sets of limiting blocks 46 slide in the vertical grooves set at the front and rear ends of the limiting push plate 42. A damping spring shock absorber ring 47 is set between the bottom surface of the limiting block 46 and the bottom inner wall of the vertical groove. The sliding shafts set at the center of the front and rear ends of the feeding frame 43 are slidably connected to the limiting grooves set at the front and rear inner walls of the material distribution frame 2. The middle section of the limiting groove is set with an inclined downward structure and extends to the bottom end of the screening frame 320.

[0046] The fine material frame 44 and the coarse material frame 45 are fixedly connected, and the top of the coarse material frame 45 extends 7cm beyond the top of the fine material frame 44. The front and rear parts of the coarse material frame 45 away from the fine material frame 44 are respectively sleeved on the outside of the guide rod 48 set inside the feeding frame 43 by fixedly installed movable blocks. The outside of the guide rod 48 is provided with spring rings 49 between the two sets of movable blocks and the corresponding inner wall of the feeding frame 43.

[0047] After screening, coarse and fine sand slide down along different particle sizes to discharge. The cylinder 41 is activated to drive the push rod to push the limit push plate 42 to move towards the material distribution frame 2, which in turn drives the sliding shafts at the front and rear ends of the feeding frame 43 to slide along the limit groove. Due to the downward tilting structure of the middle section of the limit groove, the feeding frame 43 exhibits a motion trajectory of first settling and then moving horizontally during the sliding process.

[0048] During this period, the sinking motion of the feeding frame 43 and the limiting push plate 42 generate relative displacement, forcing the limiting block 46 to slide down along the vertical groove, causing the damping spring shock absorber 47 to undergo elastic deformation. Until the sliding shaft slides to the end of the limiting groove, the distribution frame 2, the fine material frame 44 and the coarse material frame 45 sink together, and the bottom ends of all three are inserted into the water. The water flow gradually penetrates through the bottom mesh of the distribution frame 2, the fine material frame 44 and the coarse material frame 45.

[0049] At this time, the opening of the fine material frame 44 is flush with the bottom inner wall of the screening frame 320, allowing the fine sand particles to slide into the fine material frame 44; and the opening of the coarse material frame 45 is flush with the bottom surface of the extension end of the distribution guide plate 321, guiding the coarse sand particles into the coarse material frame 45, so that the coarse and fine sand can be soaked and cleaned in their respective cleaning frames.

[0050] This embodiment combines with Embodiment 1. In this embodiment, a drive gear 325 is fixedly installed at one end of a set of spiral rotating rods 322 away from the dual-shaft motor 323. A driven gear 326 is movably arranged at the rear end of the screening frame 320 and at the bottom of the drive gear 325 via the machine base. The screening frame 320 meshes with the driven gear 326. An eccentric rotating wheel 327 is fixedly connected to the side of the driven gear 326 away from the machine base via a rotating rod.

[0051] When the feeding frame 43 moves to one side of the screening frame 320, the eccentric wheel 327 is simultaneously inserted into the feeding frame 43 and located at the rear end of the coarse material frame 45. The spiral rod 322 drives the drive gear 325 to rotate, and through the meshing transmission of the driven gear 326, the eccentric wheel 327 continuously rotates, intermittently pressing the coarse material frame 45. When the movable block slides along the axial direction of the guide rod 48, it continuously compresses the spring coil 49 and stores energy. Then, it releases the elastic potential energy to reset, causing the fine material frame 44 and the coarse material frame 45 to reciprocate back and forth. As a result, the sand and gravel in the fine material frame 44 and the coarse material frame 45 oscillate periodically, significantly enhancing the friction cleaning effect.

[0052] After the cleaning operation is completed, the cylinder 41 is activated to pull the limit push plate 42 and the feeding frame 43 to reset. The sliding shaft moves in the opposite direction along the limit groove, forcing the feeding frame 43, the fine material frame 44 and the coarse material frame 45 to lift together, so that the fine material frame 44 and the coarse material frame 45 are completely removed from the water surface, which facilitates the timely discharge of residual sewage in each component and accelerates the drying process of sand and gravel.

[0053] It is worth noting that, from the appendix Figure 2 It can be seen that the mesh size of the bottom screen of the feeding frame 43 is smaller than that of the fine material frame 44, while the mesh size of the bottom screen plate of the fine material frame 44 is smaller than that of the bottom screen plate of the coarse material frame 45. This grading screen design allows a small amount of sand and gravel particles inside the fine material frame 44 and the coarse material frame 45 to be caught by the bottom screen plate of the feeding frame 43 during the moving and washing process, effectively reducing the loss of sand and gravel into the water during the washing process and avoiding sand and gravel loss and sewage blockage.

[0054] Working principle:

[0055] First, the sand and gravel material to be cleaned is introduced into the primary distribution component 31 through the feeding inclined cavity. After the initial screening, magnetic impurities and fine dust in the sand and gravel are effectively removed, improving the purity of the sand and gravel material. Then, the purified sand and gravel material enters the secondary distribution component 32. Through the reciprocating push of the V-shaped distribution trough and the sliding frame 328, the effective separation of large and small sand and gravel particles is achieved.

[0056] Restart cylinder 41 to push limit plate 42 and feeding frame 43 to slide along limit groove. During the sliding process, feeding frame 43 has a motion trajectory of first settling and then moving horizontally. The graded and screened sand and gravel particles enter fine material frame 44 and coarse material frame 45 respectively. Water gradually penetrates through the bottom mesh of material distribution frame 2, fine material frame 44 and coarse material frame 45 to realize the soaking and cleaning of coarse and fine sand and gravel in their respective cleaning frames.

[0057] At the same time, the spiral rod 322 drives the drive gear 325 to rotate, and through the meshing transmission of the driven gear 326, the eccentric wheel 327 continuously rotates, intermittently pressing the coarse material frame 45, causing the fine material frame 44 and the coarse material frame 45 to reciprocate back and forth, thereby significantly enhancing the friction cleaning effect.

[0058] Finally, the cleaning operation is completed, and the cylinder 41 is activated to pull the limit push plate 42 and the feeding frame 43 to reset, so that the fine material frame 44 and the coarse material frame 45 are completely removed from the water surface, which facilitates the timely discharge of residual sewage in each component and accelerates the drying process of sand and gravel.

[0059] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent sand washing machine with a self-draining and recycling structure, comprising a sand washing frame (1) and a concave material distribution frame (2), wherein the material distribution frame (2) is disposed at the opening of the inner wall of one side of the sand washing frame (1), characterized in that: The material distribution frame (2) is provided with a multi-level material distribution mechanism (3) at both ends, and the sand washing frame (1) is provided with a material distribution and washing component (4) on the other side of the inner wall. A sedimentation tank (5) is provided at the bottom of one side of the sand washing frame (1), and a drain valve pipe is provided between the sedimentation tank (5) and the sand washing frame (1). An L-shaped water inlet valve pipe is provided at the top of the sedimentation tank (5), and one end of the L-shaped water inlet valve pipe extends into the interior of the sand washing frame (1). The multi-stage material distribution mechanism (3) includes a first-stage material distribution component (31) and a second-stage material distribution component (32). The first-stage material distribution component (31) includes a screening vertical frame (310), and the second-stage material distribution component (32) includes a screening horizontal frame (320). The two sides of the front and rear ends of the screening horizontal frame (320) are respectively fixedly connected to the inner wall of the corresponding material distribution frame (2) through connecting rods, and the screening vertical frame (310) is fixedly installed on one side of the top of the screening horizontal frame (320). The bottom of the screening frame (320) is set with an inclined surface. The top frame opening of the screening frame (320) is provided with a material distribution guide plate (321). The width of the material distribution guide plate (321) is three-quarters of the inner width of the screening frame (320). The extension end of the material distribution guide plate (321) is provided with a bending structure. Several sets of V-shaped material distribution grooves are set at equal intervals on the top surface of the material distribution guide plate (321). The front and rear ends of the screening frame (320) are fixedly connected to the inner wall of the material distribution frame (2) through connecting rods. A spiral rotating rod (322) is provided through the two adjacent sets of connecting rods. A dual-axis motor (323) is provided at the end of one set of spiral rotating rods (322). A transmission wheel (324) is provided at the output end of the dual-axis motor (323) and the end of the other set of spiral rotating rods (322). A transmission belt is sleeved between the two sets of transmission wheels (324).

2. The intelligent sand washing machine with a self-draining and circulating structure according to claim 1, characterized in that, The top of the screening frame (310) is provided with a feeding inclined cavity, and a multi-component feeding trough is provided at the bottom of one side of the feeding cavity. An inclined concave magnetic separator (311) is hinged to the outer wall of the screening frame (310) at the bottom of the feeding cavity. A reverse inclined concave impurity removal screen (312) is provided below the magnetic separator (311). A discharge cavity is provided at the bottom of the screening frame (310). A secondary material distribution port is provided at the top of one side of the discharge cavity at the position corresponding to the impurity removal screen (312). A waste material platform (313) is provided at the bottom of the side of the screening frame (310).

3. The intelligent sand washing machine with a self-draining and circulating structure according to claim 1, characterized in that, One of the spiral rotating rods (322) is fixedly mounted with a drive gear (325) at one end away from the dual-shaft motor (323). The rear end of the screening frame (320) and the bottom position of the drive gear (325) are movably provided with a driven gear (326) through the machine base. The screening frame (320) meshes with the driven gear (326). The side of the driven gear (326) away from the machine base is fixedly connected with an eccentric wheel (327) through a rotating rod. A sliding frame (328) is provided through the inside of the screening frame (320) near the top. The bottom surface of the sliding frame (328) is in contact with the top surface of the material distribution guide plate (321).

4. The intelligent sand washing machine with a self-draining and circulating structure according to claim 3, characterized in that, The front and rear ends of the sliding frame (328) extend to the outside of the screening frame (320) and are threaded onto the outside of the corresponding spiral rotating rod (322). The inner groove of the sliding frame (328) is rotatably connected to the spiral rotating rod (329), and the spiral rotating rod (329) and the inner wall of the rear end of the inner groove of the sliding frame (328) are jointly provided with a motor (330). The spiral rotating rod (329) is threaded onto the outside of the spiral frame (329) at the front end of the inner groove, and the bottom of the spiral frame (331) is fixedly installed with a material-pushing piece (332) with a tapered bottom structure. The material-pushing piece (332) is adapted to the inside of the V-shaped material distribution groove and is flush with the bottom.

5. The intelligent sand washing machine with a self-draining and circulating structure according to claim 1, characterized in that, The material sorting and washing assembly (4) includes a cylinder (41). The cylinder (41) is located inside the sand washing frame (1) and at the top of the inner wall on one side away from the material sorting frame (2). A limit push plate (42) is fixedly installed at the output end of the cylinder (41) by a push rod. A concave structure feeding frame (43) is movably connected to the end of the limit push plate (42) away from the push rod. The bottom surface of the feeding frame (43) is set as an inwardly inclined screen surface. A fine material frame (44) and a coarse material frame (45) are arranged side by side inside the feeding frame (43).

6. The intelligent sand washing machine with a self-draining and circulating structure according to claim 5, characterized in that, Limiting blocks (46) are fixedly installed at the front and rear positions of the top of the feeding frame (43) near the limiting push plate (42). The two sets of limiting blocks (46) slide inside the vertical grooves set at the front and rear ends of the limiting push plate (42) respectively. A damping spring shock absorber (47) is set between the bottom surface of the limiting block (46) and the inner wall of the bottom of the vertical groove. The sliding shafts set at the center of the front and rear ends of the feeding frame (43) are slidably connected to the limiting grooves set at the front and rear inner walls of the material distribution frame (2). The middle section of the limiting groove is set with an inclined downward structure and extends to the bottom end of the screening frame (320).

7. The intelligent sand washing machine with a self-draining and circulating structure according to claim 5, characterized in that, The fine material frame (44) is fixedly connected to the coarse material frame (45), and the top of the coarse material frame (45) extends 5-8 cm beyond the top of the fine material frame (44). The front and rear parts of the coarse material frame (45) away from the fine material frame (44) are respectively sleeved on the outside of the guide rod (48) set inside the feeding frame (43) by fixedly installed movable blocks. The outside of the guide rod (48) is provided with spring rings (49) between the two sets of movable blocks and the corresponding inner wall of the feeding frame (43).

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