Desert sand graded cleaning and sewage treatment system

Abstract

The invention relates to a desert sand grading cleaning and sewage treatment system which comprises a frame base, a support and three grading cleaning tanks are installed at the top of the frame base, a material guiding inclined plate is installed at the top of each grading cleaning tank, a vibration screening machine frame is installed at the top of the support, and the vibration screening machine frame is designed to conduct vibration screening in the vertical direction. By designing the vibration screening machine frame, related assemblies of the vibration screening machine frame and the sand crushing assembly, during working, the three material guiding inclined plates can receive sand and stone particles of different sizes and grades, and finally the sand and stone particles are conveyed into the three grading cleaning tanks to complete grading cleaning; when the vibrating screening machine frame moves up and down, half teeth drive a rotating rod to rotate back and forth, so that a beating and crushing plate periodically beats the gravel, the caked gravel is beaten and crushed, and then the caked gravel enters three cleaning tanks to be cleaned after being beaten and crushed; the defect that in the prior art, grading and fragmenting operation cannot be completed in the cleaning process is effectively overcome.

Description

Technical Field

[0001] The invention relates to the technical field of desert sand treatment, and in particular to a desert sand classification cleaning and sewage treatment system. Background Art

[0002] Desert sand can be used to make glass, ceramics, silicon chips and other materials, which are widely used in optics, electronics, construction and other fields. In addition, desert sand can also be used to make special casting sands such as coated sand and Fusheng sand, which are used for precision casting and oil extraction. Before use, desert sand needs to be cleaned to remove harmful substances in the desert sand, such as heavy metals, radioactive substances, etc., and to remove impurities such as soil, stones, and organic matter in the desert sand, so as to further improve the quality of the material.

[0003] The applicant has found that in some areas, the agglomeration of desert sand is quite serious. When the use of the sand has high requirements on the purity and particle size, such as in precision casting, glass manufacturing and other industrial fields, it is necessary to break up the agglomerated desert sand. Breaking up the agglomerates can ensure that the desert sand is more uniform in the subsequent cleaning and screening process, thereby improving its purity and uniformity of particle size distribution. In addition, according to the use requirements, in some cases, screening equipment is required to classify the desert sand according to the particle size before cleaning, so as to meet the requirements of sand quality and cleanliness in different applications. However, most of the desert sand cleaning equipment on the market directly places the sand in the cleaning tank. Water is added to stir and wash. There is no better way to complete the crushing and grading treatment at one time in the cleaning process. Most of them are pre-operated, which is time-consuming. For example, in an automatic cleaning and impurity removal device for building sand and gravel with a Chinese patent number of CN111389811A, the sand is directly added to the mixing barrel for direct cleaning. This results in that when the desert sand is severely agglomerated or has high requirements, the sand may not be dispersed, resulting in poor cleaning, and there is no grading, and the sand size requirements for different occasions cannot be met. At the same time, it cannot be dehydrated quickly, and wastewater, waste residue and other pollutants will be generated during the cleaning process of the desert sand, and traditional cleaning equipment cannot perform sewage treatment well.

[0004] Therefore, the inventor particularly needs to design a desert sand classification cleaning and sewage treatment system to solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide a desert sand classification cleaning and sewage treatment system to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a desert sand grading cleaning and sewage treatment system, comprising: a frame, a bracket and three grading cleaning tanks are installed on the top of the frame, a guide inclined plate is installed on the top of each grading cleaning tank, a vibrating screening machine frame is installed on the top of the bracket, the vibrating screening machine frame is designed for vibrating screening in the up and down directions, and a large-hole sieve plate and a small-hole sieve plate with an inclined design are installed from top to bottom inside the vibrating screening machine frame, two guide inclined plates are arranged below one side of the large-hole sieve plate and the small-hole sieve plate, and a guide inclined plate is arranged below the small-hole sieve plate, a sand crushing assembly is connected between the guide inclined plate and the vibrating screening machine frame, and the bottoms of the three grading cleaning tanks are connected to each other through a conduit assembly A spiral dehydrator is arranged at the bottom of the frame seat, and a sewage discharge pipe and an outlet pipe are respectively installed at the bottom of the spiral dehydrator, and a sewage recovery box and a sand collection box are respectively arranged below the sewage discharge pipe and the outlet pipe. The sand crushing assembly includes tooth plate 1 and tooth plate 2 fixed at the end of the vibration screening machine frame and a rotating rod rotatably connected to the inner wall of the guide inclined plate, and the two ends of the rotating rod are butt-jointed with half teeth installed on the outer wall of the guide inclined plate, the tooth plate 1 is meshed with the half teeth on the outer walls of the two guide inclined plates below one side of the large-hole sieve plate and the small-hole sieve plate, and the tooth plate 2 is meshed with the half teeth on the outer wall of the guide inclined plate at the bottom of the small-hole sieve plate, and a crushing plate is fixed on the rotating rod, and the crushing plate is periodically contacted with the surface of the guide inclined plate through the back and forth rotation of the rotating rod.

[0007] Furthermore, a layer of hard silicone is bonded to the bottom surface of the smashing board, and the top of the smashing board is sleeved on the outside of the rotating rod through a clamp ring and connected with screws.

[0008] Furthermore, two guide inclined plates are fixed on the top of the large-hole sieve plate and the small-hole sieve plate and near the lower end of the inclined surface and on both sides of the inner wall of the vibration screening machine frame. The width of the large-hole sieve plate and the small-hole sieve plate is greater than the width of the two material guide inclined plates below one side thereof, and the width of the small-hole sieve plate is the same as the width of the guide inclined plate located at the bottom thereof.

[0009] Furthermore, the length of the small-pore sieve plate is smaller than that of the large-pore sieve plate.

[0010] Furthermore, a return plate is installed on the bottom surface of the large-hole sieve plate and the small-hole sieve plate near the lower end of the slope, and the return plate is designed to be inclined and inclined toward the upper end of the slope of the large-hole sieve plate and the small-hole sieve plate.

[0011] Furthermore, the bottoms of the three material guide inclined plates are fixedly connected to the grading cleaning tank through a support plate 1, and a reinforcing plate 1 is fixed between the two material guide inclined plates located below one side of the large-hole sieve plate and the small-hole sieve plate, and the material guide inclined plate located below the small-hole sieve plate is located above the bracket, and a reinforcing plate 2 is fixed to the material guide inclined plate and the bracket.

[0012] Furthermore, the catheter assembly includes a main catheter with an "L"-shaped appearance, and the two ends of the main catheter are respectively connected to a graded cleaning tank outlet and an inlet of a spiral dehydrator, and a secondary pipe is connected to the other two graded cleaning tank outlets in the middle of the main catheter, and electromagnetic valves are provided on the vertical section of the main catheter and the secondary pipe.

[0013] Furthermore, a filter screen is obliquely installed on the inner wall of the sewage recovery tank, and an opening is provided on the side wall of the sewage recovery tank on one side of the oblique lower end of the filter screen, and the opening is hinged with a sealing plate;

[0014] Furthermore, a slope block is installed at the bottom end of the sewage recovery tank, and a valve pipe is fixed at the upper and lower ends of the slope of the slope block on both sides of the sewage recovery tank.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention designs a vibration screening frame and its related components and a sand crushing component, so that when working, the three guide inclined plates can receive sand and gravel particles of different sizes and finally transport them to three grading cleaning tanks for grading and cleaning. At the same time, the vibration screening frame moves up and down, and the half teeth drive the rotating rod to rotate back and forth, so that the sand and gravel that pass through the smacking plate periodically are beaten to break the agglomerated sand and gravel, and then the agglomerated sand and gravel are broken and then enter the three cleaning tanks for cleaning, which effectively solves the deficiency of the prior art that the grading and crushing operations cannot be completed in the cleaning process.

[0017] 2. The present invention further optimizes the strength of the guide ramp plates. The support plate 1 can realize the fixed connection between the guide ramp plates and the grading cleaning troughs, and the guide ramp plates at both ends are connected to the grading cleaning troughs near the bottom of one end. Therefore, the support strength of the guide ramp plates at both ends can be strengthened by reinforcing plates 2 and 1, thereby making the guide ramp plates more stable and reliable during transportation, thereby enhancing working stability.

[0018] 3. The present invention further optimizes the structure of graded screening. The guide inclined plate can ensure that the sand and gravel transported by the large-hole sieve plate and the small-hole sieve plate can be transported to the two guide inclined plates located below one side thereof. At the same time, the small-hole sieve plate is designed to be shorter, which can avoid colliding with the guide inclined plate located below one side of the large-hole sieve plate when sliding up and down for screening, making the design more reasonable. By designing the return plate, the sand screened by the sieve holes near the lower end of the slope can be transported to the upper end of the slope of the guide inclined plate and the small-hole sieve plate, thereby making the operation more stable and reliable.

[0019] 4. The present invention optimizes the design of dehydration and sewage treatment. During operation, all sewage flows out of the sewage pipe into the sewage recovery tank. During this process, the filter screen can filter most of the sediment and discharge it to one side of the sewage recovery tank through the slope. At the same time, the slope block can precipitate a small amount of impurities. After the work is completed, the sewage is first disinfected, and then the sealing plate is opened to remove the impurities. The filtered water is discharged through the valve pipe for secondary use, and the impurity water precipitated at the bottom of the slope can be used, which solves the problem of inconvenience in sewage treatment in the existing technical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 The present invention is a whole three-dimensional desert sand classification cleaning and sewage treatment system Figure 1 ;

[0022] Figure 2 The present invention is a whole three-dimensional desert sand classification cleaning and sewage treatment system Figure 2 ;

[0023] Figure 3 A three-dimensional diagram of a vibrating screening machine frame and a material guiding inclined plate of a desert sand classification cleaning and sewage treatment system of the present invention;

[0024] Figure 4 A three-dimensional diagram of a guide ramp and a grading cleaning tank of a desert sand grading cleaning and sewage treatment system of the present invention;

[0025] Figure 5 A three-dimensional diagram of a vibrating screening machine frame of a desert sand classification cleaning and sewage treatment system of the present invention;

[0026] Figure 6 A three-dimensional diagram of a conduit assembly and a sewage recovery tank of a desert sand classification cleaning and sewage treatment system of the present invention;

[0027] Figure 7 A three-dimensional cross-sectional view of a vibrating screening machine frame of a desert sand classification cleaning and sewage treatment system of the present invention;

[0028] Figure 8 This is a three-dimensional diagram of a sand crushing component of a desert sand classification cleaning and sewage treatment system of the present invention.

[0029] In the figure:

[0030] 1. Frame; 11. Bracket; 12. Grading cleaning tank; 13. Material guide inclined plate; 14. Vibration screening machine frame; 15. Large hole sieve plate; 16. Small hole sieve plate; 17. Guide inclined plate; 18. Support plate one; 19. Strengthening plate two; 110. Strengthening plate one; 111. Return plate; 2. Spiral dehydrator; 21. Sewage pipe; 22. Outlet pipe; 3. Catheter assembly; 31. Main pipe; 32. Auxiliary pipe; 33. Solenoid valve; 4. Sewage recovery box; 41. Filter screen; 42. Sealing plate; 43. Valve pipe; 44. Inclined block; 5. Sand collection box; 6. Sand crushing assembly; 61. Tooth plate one; 62. Tooth plate two; 63. Turning rod; 64. Half tooth; 65. Breaking plate; 66. Hard silicone. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] like Figure 1-Figure 8 As shown, a desert sand grading cleaning and sewage treatment system of the present invention comprises: a frame 1, a bracket 11 and three grading cleaning tanks 12 are installed on the top of the frame 1, a guide inclined plate 13 is installed on the top of each grading cleaning tank 12, a vibrating screening machine frame 14 is installed on the top of the bracket 11, the vibrating screening machine frame 14 is designed for vibrating screening in the up and down directions, and a large-hole sieve plate 15 and a small-hole sieve plate 16 with an inclined design are installed from top to bottom in the vibrating screening machine frame 14, two guide inclined plates 13 are arranged below one side of the large-hole sieve plate 15 and the small-hole sieve plate 16, and a guide inclined plate 13 is arranged below the small-hole sieve plate 16, a sand crushing component 6 is connected between the guide inclined plate 13 and the vibrating screening machine frame 14, and the bottoms of the three grading cleaning tanks 12 are connected to the spiral dehydrator 2 arranged at the bottom of the frame 1 through the conduit component 3. A sewage pipe 21 and an outlet pipe 22 are respectively installed at the bottom of the spiral dehydrator 2, and a sewage recovery box 4 and a sand collection box 5 are respectively arranged below the sewage pipe 21 and the outlet pipe 22. The sand crushing assembly 6 includes a tooth plate 1 61 and a tooth plate 2 62 fixed at the end of the vibration screening machine frame 14, and a rotating rod 63 rotatably connected to the inner wall of the guide inclined plate 13. The two ends of the rotating rod 63 are connected with half teeth 64 installed on the outer wall of the guide inclined plate 13. The tooth plate 1 61 is meshed with the half teeth 64 on the outer walls of the two guide inclined plates 13 below one side of the large-hole sieve plate 15 and the small-hole sieve plate 16, and the tooth plate 2 62 is meshed with the half teeth 64 on the outer wall of the guide inclined plate 13 at the bottom of the small-hole sieve plate 16. A crushing plate 65 is fixed on the rotating rod 63, and the crushing plate 65 is periodically contacted with the surface of the guide inclined plate 13 by rotating back and forth through the rotating rod 63.

[0033] Through the above-mentioned structural design, in the optimized design of agglomerated sand treatment and graded cleaning, when working, the three graded cleaning tanks 12 are introduced into the cleaning liquid, and then the cleaned desert sand is introduced into the vibrating screening machine frame 14 installed on the top of the bracket 11 through the lifting conveying equipment, and the vibrating screening machine frame 14 is started, and the vibrating screening machine frame 14 moves up and down regularly. At this time, it is screened by the large-hole sieve plate 15 and the small-hole sieve plate 16. The three guide inclined plates 13 located below one side of the large-hole sieve plate 15 and the small-hole sieve plate 16 and at the bottom of the small-hole sieve plate 16 can receive sand and gravel particles of different sizes, and finally transport them to the three graded cleaning tanks 12 to complete the graded cleaning. At the same time, the vibration screening machine frame 14 moves up and down, while causing the tooth plate 1 61 and the tooth plate 2 62 to move up and down regularly, thereby causing the meshing therewith to move. The half teeth 64 drive the rotating rod 63 to rotate back and forth, so that the beating plate 65 periodically beats the surface of the guide inclined plate 13 and beats the passing sand and gravel to break the agglomerated sand and gravel, and then the agglomerated sand and gravel are broken and then enter the three cleaning tanks for cleaning. Finally, after the cleaning is completed, the precipitated sand in the three cleaning tanks is poured into the spiral dehydrator 2 for dehydration through the catheter assembly 3, the sewage pipe 21 discharges the sewage into the sewage recovery tank 4, and the outlet pipe 22 discharges the sand into the sand collection box 5, and finally the sewage from the three graded cleaning tanks 12 is discharged into the sewage recovery tank 4 through the sewage pipe 21 of the spiral dehydrator 2 to complete the work. It should be noted that the vibration screening machine frame 14 is connected to the top of the bracket 11 by the elastic telescopic rod and the vibration motor is installed outside the vibration screening machine frame 14 to achieve up and down shaking screening. This is an existing design method, and Figure 1 and Figure 2 All are shown, so the detailed principles will not be repeated here.

[0034] like Figure 8 As shown, a layer of hard silicone 66 is bonded to the bottom surface of the smashing plate 65, and the top of the smashing plate 65 is sleeved on the outside of the rotating rod 63 through a clamp ring and connected with screws.

[0035] Through the above structural design, in the further optimization of the crushing structure, the hard silica gel 66 can be used to crush the agglomerated sand and gravel well by utilizing its own elasticity while the crushing plate 65 is in contact with the guide inclined plate 13, and ensure that the hard silica gel 66 itself is not damaged.

[0036] like Figure 1-3 as well as Figure 5 and Figure 7As shown, two guide inclined plates 17 are fixed on the top of the large-hole sieve plate 15 and the small-hole sieve plate 16 and near the lower end of the inclined surface and on both sides of the inner wall of the vibration screening machine frame 14. The width of the large-hole sieve plate 15 and the small-hole sieve plate 16 is greater than the width of the two guide inclined plates 13 below one side thereof, and the width of the small-hole sieve plate 16 is the same as the width of the guide inclined plate 17 located at the bottom thereof, and the length of the small-hole sieve plate 16 is less than the length of the large-hole sieve plate 15. A return plate 111 is installed on the bottom surface of the large-hole sieve plate 15 and the small-hole sieve plate 16 near the lower end of the inclined surface, and the return plate 111 is designed to be inclined, and the return plate 111 is inclined toward the upper end of the inclined surface of the large-hole sieve plate 15 and the small-hole sieve plate 16.

[0037] Through the above structural design, the structure of graded screening is further optimized. The guide inclined plate 17 can ensure that the sand and gravel transported by the large-hole screen plate 15 and the small-hole screen plate 16 can be transported to the two guide inclined plates 13 located below one side thereof. Because the two guide inclined plates 13 need to be inserted into the inner side of the vibrating screening machine frame 14 to avoid material leakage, their width is smaller than the width of the guide inclined plate 13 located below the small-hole screen plate 16. At the same time, the small-hole screen plate 16 is designed to be shorter, which can avoid colliding with the large-hole screen plate 15 when sliding up and down for screening. A material guide inclined plate 13 at the lower side of the hole screen plate 15 makes the design more reasonable, and by designing the return plate 111, since part of the sand and gravel are screened through the sieve holes near the lower end of the slope, these sand and gravel may not be screened well when they fall on the small hole screen plate 16, and may have passed the crushing plate 65 when they fall on the material guide inclined plate 13 below the small hole screen plate 16. Therefore, the sand is transported to the upper end of the slope of the material guide inclined plate 13 and the small hole screen plate 16 through the return plate 111, thereby making the operation more stable and reliable.

[0038] like Figure 4 and Figure 6 As shown, the bottoms of the three material guide inclined plates 13 are fixedly connected to the grading cleaning tank 12 through a support plate 18, and a reinforcing plate 110 is fixed between the two material guide inclined plates 13 located below one side of the large-hole sieve plate 15 and the small-hole sieve plate 16, and the material guide inclined plate 13 located below the small-hole sieve plate 16 is located above the bracket 11, and a reinforcing plate 2 19 is fixed to the material guide inclined plate 13 and the bracket 11.

[0039] Through the above structural design, the strength of the guide inclined plate 13 is further optimized, and the support plate 18 can realize the fixed connection between the guide inclined plate 13 and the classification cleaning tank 12. Figure 6 It can be seen that the guide inclined plates 13 at both ends are docked with the grading cleaning tank 12 near the bottom position of one end. Therefore, the supporting strength of the guide inclined plates 13 at both ends can be strengthened by reinforcing plate 2 19 and reinforcing plate 1 110, thereby making the guide inclined plates 13 more stable and reliable during transportation and enhancing working stability.

[0040] The conduit assembly 3 includes a main conduit 31 with an "L"-shaped appearance. The two ends of the main conduit 31 are respectively connected to an outlet of a graded cleaning tank 12 and an inlet of the spiral dehydrator 2, and a secondary pipe 32 is connected to the outlets of the other two graded cleaning tanks 12 at the middle position of the main conduit 31. Electromagnetic valves 33 are provided on the vertical section of the main conduit 31 and the secondary pipe 32. A filter screen 41 is obliquely installed on the inner wall of the sewage recovery tank 4, and the sewage recovery tank 4 is provided with an opening on the side wall of the inclined lower end of the filter screen 41, and the opening is hinged with a sealing plate 42. A slope block 44 is installed at the bottom end of the sewage recovery tank 4, and a valve pipe 43 is fixed on each side of the sewage recovery tank 4 at the upper and lower ends of the slope of the slope block 44.

[0041] Through the above structural design, in terms of dehydration and sewage treatment design optimization, after cleaning is completed, sand is settled at the bottom of the graded cleaning tank 12, and the sewage containing silt is on the top. At this time, the spiral dehydrator 2 is started, and the sand in the three graded cleaning tanks 12 is transported to the spiral dehydrator 2 for transportation and dehydration through the three electromagnetic valves 33 and the main pipe 31 and the auxiliary pipe 32, leaving the sewage in the graded cleaning tank 12. At this time, the sewage discharge pipe 21 and the outlet pipe 22 valves are both opened, and the sewage flows out of the sewage discharge pipe 21 into the sewage recovery tank 4, and the sand is discharged from the outlet pipe 22. After all the sand is taken out, the sewage left in the three graded cleaning tanks 12 is introduced into the spiral dehydrator 2 together and the outlet pipe 22 valve is closed, so that all the sewage flows out of the sewage discharge pipe 21 into the sewage recovery tank 4. In this process, the filter screen 41 can filter most of the silt, and the filter screen 41 can filter most of the silt. It is discharged to one side of the sewage recovery tank 4 through the slope. At the same time, the slope block 44 can precipitate a small amount of impurities. After the work is completed, the sewage is first disinfected, and then the sealing plate 42 is opened to remove the impurities, and then the filtered water is discharged through the valve pipe 43 for secondary utilization as well as the impurity water precipitated at the bottom of the slope. It should be noted that the spiral dehydrator 2 is an existing design method, and its drain port is located in the middle position of the bottom, while the discharge port is located at the end displacement of the spiral shaft, that is, the body is close to the bottom position of one end. When working, the material is pushed forward in the spiral groove by the rotation of the internal spiral shaft, and the extrusion effect of the spiral groove is used to squeeze out the water in the material. There is a filter cover on the outside of the spiral shaft to effectively separate the squeezed water from the solid material. Therefore, its detailed working principle and components are not repeated, and the section where the main pipe 31 and the auxiliary pipe 32 are connected is designed to be inclined rather than horizontal, which is convenient for sand discharge.

[0042] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A desert sand classification cleaning and sewage treatment system, characterized in that: include: A frame (1), wherein a support (11) and three grading cleaning tanks (12) are installed on the top of the frame (1), and a material guide inclined plate (13) is installed on the top of each grading cleaning tank (12); a vibration screening machine frame (14) is installed on the top of the support (11); the vibration screening machine frame (14) is designed for vertical vibration screening; a large-hole sieve plate (15) and a small-hole sieve plate (16) are installed inside the vibration screening machine frame (14) from top to bottom with an inclined design; two material guide inclined plates (13) are arranged below one side of the large-hole sieve plate (15) and the small-hole sieve plate (16), and a material guide inclined plate (13) is arranged below the small-hole sieve plate (16); and a sand crushing component (6) is connected between the material guide inclined plate (13) and the vibration screening machine frame (14); The bottoms of the three graded cleaning tanks (12) are connected to the spiral dehydrator (2) arranged at the bottom of the frame (1) through the conduit assembly (3); a sewage discharge pipe (21) and an outlet pipe (22) are respectively installed at the bottom of the spiral dehydrator (2); and a sewage recovery box (4) and a sand collection box (5) are respectively arranged below the sewage discharge pipe (21) and the outlet pipe (22); The sand crushing assembly (6) comprises a tooth plate 1 (61) and a tooth plate 2 (62) fixed at the end of the vibration screening machine frame (14) and a rotating rod (63) rotatably connected to the inner wall of the material guide inclined plate (13). The two ends of the rotating rod (63) are butt-jointed with half teeth (64) installed on the outer wall of the material guide inclined plate (13). The tooth plate 1 (61) is meshed with the half teeth (64) on the outer walls of the two material guide inclined plates (13) below one side of the large-hole sieve plate (15) and the small-hole sieve plate (16), and the tooth plate 2 (62) is meshed with the half teeth (64) on the outer wall of the material guide inclined plate (13) at the bottom of the small-hole sieve plate (16). A crushing plate (65) is fixed on the rotating rod (63). The crushing plate (65) is periodically contacted with the surface of the material guide inclined plate (13) by the rotating rod (63) rotating back and forth.

2. A desert sand classification cleaning and sewage treatment system as claimed in claim 1, characterized in that: A layer of hard silica gel (66) is bonded to the bottom surface of the smashing plate (65), and the top of the smashing plate (65) is sleeved on the outside of the rotating rod (63) through a clamp ring and connected with screws.

3. A desert sand classification cleaning and sewage treatment system as claimed in claim 1, characterized in that: Two guide inclined plates (17) are fixed on the top of the large-hole sieve plate (15) and the small-hole sieve plate (16) and near the lower end of the inclined surface and on both sides of the inner wall of the vibration screening machine frame (14); the width of the large-hole sieve plate (15) and the small-hole sieve plate (16) is greater than the width of the two material guide inclined plates (13) below one side thereof, and the width of the small-hole sieve plate (16) is the same as the width of the guide inclined plate (17) located at the bottom thereof.

4. A desert sand classification cleaning and sewage treatment system as claimed in claim 3, characterized in that: The length of the small-pore sieve plate (16) is smaller than the length of the large-pore sieve plate (15).

5. A desert sand classification cleaning and sewage treatment system as claimed in claim 3, characterized in that: A return plate (111) is installed on the bottom surface of the large-pore sieve plate (15) and the small-pore sieve plate (16) near the lower end of the inclined surface, and the return plate (111) is designed to be inclined, and the return plate (111) is inclined toward the upper end of the inclined surface of the large-pore sieve plate (15) and the small-pore sieve plate (16).

6. A desert sand classification cleaning and sewage treatment system as claimed in claim 1, characterized in that: The bottoms of the three material guide inclined plates (13) are fixedly connected to the classification cleaning tank (12) through a support plate (18), and a reinforcing plate (110) is fixed between the two material guide inclined plates (13) located below one side of the large-hole sieve plate (15) and the small-hole sieve plate (16), while the material guide inclined plate (13) located below the small-hole sieve plate (16) is located above the bracket (11), and a reinforcing plate (19) is fixed between the material guide inclined plate (13) and the bracket (11).

7. A desert sand classification cleaning and sewage treatment system as claimed in claim 1, characterized in that: The conduit assembly (3) comprises a main conduit (31) with an "L"-shaped appearance, wherein two ends of the main conduit (31) are respectively connected to an outlet of a graded cleaning tank (12) and an inlet of a spiral dehydrator (2), and a secondary conduit (32) is connected to the outlets of the other two graded cleaning tanks (12) at the middle position of the main conduit (31), and electromagnetic valves (33) are provided on the vertical section of the main conduit (31) and the secondary conduit (32).

8. A desert sand classification cleaning and sewage treatment system as claimed in claim 1, characterized in that: The inner wall of the sewage recovery tank (4) is obliquely mounted with a filter screen (41), and the side wall of the sewage recovery tank (4) on one side of the oblique lower end of the filter screen (41) is provided with an opening, and the opening is hinged with a sealing plate (42).

9. A desert sand classification cleaning and sewage treatment system as claimed in claim 7, characterized in that: A slope block (44) is installed at the bottom end of the sewage recovery tank (4), and a valve pipe (43) is fixed at the upper and lower ends of the slope of the slope block (44) on both sides of the sewage recovery tank (4).

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