Sandstone screening device with self-cleaning function

Abstract

The application discloses a sandstone screening device with a self-cleaning function and relates to the technical field of screening devices. The sandstone screening device comprises a supporting assembly, a filtering assembly and a cleaning assembly. The filtering assembly is arranged at the top end of the supporting assembly and is used for filtering out materials of different sizes. The cleaning assembly is arranged between the supporting assembly and the filtering assembly and is used for cleaning the filter holes blocked by the soil. The filtering assembly is internally provided with a detection assembly which is used for detecting the number of the filter holes blocked by the soil. One end of the filtering assembly is provided with a feeding unit, and the other end of the filtering assembly is provided with a discharging assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screening devices, and particularly relates to a sand screening device with a self-cleaning function. BACKGROUND

[0002] Stone is a basic material for building construction, however, sand and stone that is transported to a construction site or a concrete mixing yard needs to be screened to meet different needs of building construction for sand and stone particle size.

[0003] The sand screening device is mainly used for grading and separating mixed materials, and then screening out stone of a required size. In the working process, the mixed materials contain a large amount of soil and impurities, which block the filter holes and adhere to the inner wall of the cylinder in the filtering process. In addition, the content of the soil that blocks the holes is not the same, and the position is not fixed, which leads to great difficulty in cleaning and low cleaning efficiency. SUMMARY

[0004] The present application aims to provide a sand screening device with a self-cleaning function to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme.

[0006] The sand screening device with a self-cleaning function comprises a supporting assembly, a filtering assembly and a cleaning assembly. The filtering assembly is arranged at the top end of the supporting assembly and is used for filtering out materials of different sizes. The cleaning assembly is arranged between the supporting assembly and the filtering assembly and is used for cleaning the filter holes blocked by soil. The filtering assembly is internally provided with a detection assembly, which is used for detecting the number of filter holes blocked by soil. One end of the filtering assembly is provided with an inlet unit, and the other end of the filtering assembly is provided with an outlet unit.

[0007] Further, the sand screening device is mainly used for grading and separating mixed materials. In the working process, the mixed materials contain a large amount of soil and impurities, which block the filter holes and adhere to the inner wall of the cylinder in the filtering process, thereby affecting the subsequent filtering effect. In addition, the stone in the materials is not the same in size, and the stone of different sizes has different uses. The mixed materials also contain fine sand, which needs to be graded. The filtering assembly is used for screening large stone, small stone and fine sand, and classifying and collecting them. The cleaning assembly is used for cleaning the filter cylinder in the filtering assembly and improving the screening efficiency of the ore. The detection assembly is used for detecting the number of blocked filter holes. The inlet unit is used for transporting the mixed materials into the filtering assembly. The outlet unit is used for collecting the classified ore.

[0008] The support assembly comprises a column, the column is located on the horizontal ground, the top end of the column is provided with a bottom water tank, the top end of the column is fixedly connected with the bottom water tank, the outer wall of the bottom water tank is provided with a mounting block, the mounting block is fixedly connected with the bottom water tank, and one end of the bottom water tank is provided with a driving assembly.

[0009] Further, the support assembly is used for supporting the filtering assembly, the column is erected on the horizontal ground, the top end of the column is provided with a bottom water tank, the bottom water tank is used for storing cleaning water, the cleaning water is used for providing a screening environment for the mixed materials, thereby improving the screening efficiency through the driving of the water flow, and the driving assembly is used for providing power and controlling the rotation of the filtering assembly to screen the mixed materials.

[0010] The filtering assembly comprises an outer cylinder, a middle cylinder and an inner cylinder, the outer cylinder is located at the top end of the bottom water tank, the outer cylinder is fixedly connected with the bottom water tank, the outer cylinder is in communication with the bottom water tank, the middle cylinder is located in the outer cylinder and is rotatably connected with the outer cylinder, and the inner cylinder is located in the middle cylinder and is provided with a connecting column on the outer wall thereof, one end of the connecting column is fixedly connected with the outer wall of the inner cylinder, and the other end of the connecting column is rotatably connected with the inner wall of the middle cylinder, and the middle cylinder and the inner wall of the inner cylinder are both provided with a plurality of filtering holes.

[0011] Further, the outer cylinder is a fixed cylinder, the middle cylinder and the inner cylinder are filtering cylinders, the filtering hole diameter of the inner cylinder is larger than that of the middle cylinder, the inner cylinder is used for filtering out large stone materials in the mixed materials, the middle cylinder is used for filtering out small stone materials in the mixed materials, and the remaining fine sand in the mixed materials will be deposited in the outer cylinder, but in the filtering process, since a large amount of soil is included in the mixed materials, the soil will be driven in the filtering process, and the mud has a high probability of blocking the filtering holes of the middle cylinder and the inner cylinder, wherein the two ends of the middle cylinder are rotatably connected with the outer cylinder, and the inner cylinder is rotatably connected with the middle cylinder through the connecting column.

[0012] The driving assembly comprises a rotating motor, a transmission rod and a main gear, the rotating motor is located on the upper surface of the mounting block, the fixed end of the rotating motor is fixedly connected with the mounting block, the output end of the rotating motor is provided with the transmission rod, the rod body of the transmission rod is provided with the main gear, the main gear is connected with the tooth pattern of the middle cylinder, one end of the transmission rod away from the rotating motor is provided with a rotating disc, one side of the rotating disc is provided with a transmission wheel, the transmission wheel away from the rotating disc is provided with a secondary gear, and the secondary gear is connected with the tooth pattern of the inner cylinder.

[0013] Further, the rotating motor is used as a power source to control the rotation of the transmission rod, the rotation of the transmission rod drives the rotation of the main gear and the rotating disc, wherein the rotation of the main gear is used to drive the rotation of the middle cylinder, the rotation of the rotating disc drives the rotation of the transmission wheel, the rotation of the transmission wheel drives the rotation of the secondary gear, and the rotation of the secondary gear is used to drive the rotation of the inner cylinder, thereby controlling the rotation of the middle cylinder and the inner cylinder through the rotating motor, and thereby realizing the filtering process.

[0014] The detection assembly comprises a circular ring and a conductive column, the circular ring is located in the filtering hole of the middle cylinder and the inner cylinder and is slidably connected with the inner wall of the filtering hole, the conductive column is located in the middle cylinder and the inner cylinder and is connected with the circular ring at both ends, and the circular ring is made of copper.

[0015] Further, the detection assembly is used for detecting the number of blocked filter holes, wherein the inner cavity is located in the middle cylinder and inside the inner cylinder, the inner cavity is connected with the filter holes at both ends, the conductive column is located in the inner cavity, the conductive column is provided with a plurality of conductive columns, so that the two ends of the conductive column contact the filter holes, the two ends of the conductive column are connected with external wires, then the ring is located in the filter hole, in normal state, the conductive column contacts the ring, thereby forming a circuit, and because the ring is in sliding connection with the inner wall of the filter hole, when the corresponding filter hole is blocked by mud, the ring will be affected by the mud or minerals and deviate, thereby the ring is dislocated with the conductive column, and the original overall circuit is disconnected, when the filter hole is in the cleaning water, the water has a certain conductivity, the resistance value between the conductive columns is increased, if the filter hole is blocked by soil, the resistance value will continue to increase, and the increase of the resistance value is related to the water content of the soil, the higher the water content, the lower the increase of the resistance value, thereby the size of the resistance value is indirectly judged whether the filter hole is blocked.

[0016] The cleaning assembly comprises an air pipe and an output pipe, the output pipe is located in the bottom water tank and fixedly connected with the inner wall of the bottom water tank, the air pipe is located in the output pipe, the bottom end of the output pipe is provided with an air outlet, and the bottom end of the output pipe is provided with a fixed column, the top end of the fixed column is provided with a tapered column, the tapered column is fixedly connected with the fixed column, and the tapered column is matched with the air outlet.

[0017] Further, the cleaning assembly is used for providing bubbles to clean the filter cylinder in the filter assembly, cleaning the filter holes blocked by mud, and screening the mixture through the flow of bubbles and the rotation of the filter cylinder, one end of the air pipe is connected with an external air pipe, the air pipe is arranged to discharge air, an air flow is formed in the water, the air flow passes through the air outlet at the bottom end of the output pipe, thereby the air flow forms bubbles outside the air outlet, and the air outlet is matched with the tapered column, the tapered column is used for adjusting the size of the air outlet, when the distance between the air outlet and the tapered column is closer, the air outlet is smaller, the bubbles are smaller, the number is more, and the cleaning effect is improved, on the contrary, the distance is farther, the air outlet is larger, the bubbles are larger, the number is less, and the coverage is increased.

[0018] The outer wall of the bottom water tank is provided with a fixed block, the fixed block is fixedly connected with the bottom water tank, and the output pipe is provided between the fixed block and the fixed block.

[0019] Further, the two ends of the electromagnetic spring are connected with an external power source, and the electromagnetic spring is used for controlling the up-down movement of the output pipe, when the device works, the number and position of the blocked holes are judged according to the resistance value between the conductive columns in the detection assembly, and then the electromagnetic spring at the corresponding position is controlled to work, after the electromagnetic spring is electrified, a magnetic field is generated, the electromagnetic spring is contracted through the mutual action of the magnetic force, the contraction of the electromagnetic spring drives the movement of the output pipe, and then the distance between the output pipe and the tapered column is adjusted.

[0020] The discharge assembly comprises a main collecting pipe, a secondary collecting pipe and a liquid pipe, the main collecting pipe is located at the side of the inner cylinder away from the feeding unit, the secondary collecting pipe is located at the bottom end of the main collecting pipe, and the liquid pipe is located at the bottom end of the secondary collecting pipe.

[0021] Further, the main collecting pipe is used for collecting large stone materials discharged by the inner cylinder, the secondary collecting pipe is used for collecting small stone materials discharged by the inner cylinder, and the liquid pipe is used for discharging sludge and fine sand in the external pipeline.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. In the present application, when filtering, the mixture is in the filtering assembly, the inner cylinder screens out large stone materials, the middle cylinder screens out medium stone materials, and the remaining fine sand finally settles in the bottom water tank.

[0024] 2. In the present application, the filtering holes of the filtering cylinder are detected by cooperation of the conductive column and the circular ring. When only water flow and stone materials pass through the filtering holes, the circular ring is connected with the conductive column, at this time, the resistance value between the conductive columns is a constant value. Then, when the soil is accumulated in the filtering holes to cause blockage, the circular ring is extruded by the soil and is displaced, at this time, the contact end of the conductive column touches the soil, and the resistance value is increased. The greater the content of the soil in the blocked hole, the greater the resistance value.

[0025] 3. The present application cleans the blocked hole, the gas flow is discharged through the air outlet hole at the bottom end of the output pipe, and then the gas flow forms bubbles in the liquid. The bubbles float upward, and the bubbles are broken when contacting the filtering holes and the mixture, thereby impacting the soil and the mixture, and thus the cleaning effect is realized, and the screening effect of the materials is improved.

[0026] 4. In the present application, the electromagnetic coil is adjusted according to the resistance value between the conductive columns. The greater the resistance value, the greater the current of the electromagnetic coil, and the greater the distance difference between the air outlet hole and the conical column, the greater the air outlet hole, the greater the bubbles generated, and the greater the impact force caused, thereby improving the cleaning effect. On the contrary, the smaller the content of the soil in the filtering hole, the smaller the resistance value, the smaller the current of the electromagnetic coil, and the smaller the distance difference between the air outlet hole and the conical column, the greater the number of bubbles generated, and the greater the impact frequency caused, thereby improving the screening effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the whole application;

[0028] Figure 2 It is a structural schematic diagram of the feeding assembly of the present application;

[0029] Figure 3 It is a structural schematic diagram of the filtering assembly of the present application;

[0030] Figure 4 This is a schematic diagram of the outer cylinder of the present invention;

[0031] Figure 5 This is a schematic diagram of the inner cylinder of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of the auxiliary gear of the present invention;

[0034] Figure 8 For the present invention Figure 2 Enlarged view of part A in the middle section;

[0035] Figure 9 This is a schematic diagram of the conical column structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the structure of the ring of the present invention.

[0037] In the diagram: 1. Support assembly; 11. Column; 12. Bottom water tank; 13. Mounting block; 2. Filter assembly; 21. Outer cylinder; 22. Middle cylinder; 23. Inner cylinder; 24. Connecting column; 3. Cleaning assembly; 31. Air pipe; 32. Output pipe; 33. Fixing column; 34. Conical column; 35. Fixing block; 36. Electromagnetic spring; 4. Detection assembly; 41. Ring; 42. Conductive column; 5. Feeding unit; 6. Discharge assembly; 61. Main collection pipe; 62. Secondary collection pipe; 63. Liquid pipe; 7. Drive assembly; 71. Rotating motor; 72. Transmission rod; 73. Main gear; 74. Turntable; 75. Transmission wheel; 76. Secondary gear. Detailed Implementation

[0038] 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.

[0039] Example: Figures 1-10 As shown, the present invention provides a sand and gravel screening device with self-cleaning function. The sand and gravel screening device includes a support component 1, a filter component 2, and a cleaning component 3. The filter component 2 is provided at the top of the support component 1. The filter component 2 is used to filter out materials of different sizes. The cleaning component 3 is provided between the support component 1 and the filter component 2. The cleaning component 3 is used to clean the filter holes blocked by mud. The filter component 2 is provided with a detection component 4. The detection component 4 is used to detect the number of filter holes blocked by mud. One end of the filter component 2 is provided with a feeding unit 5, and the other end of the filter component 2 is provided with a discharging component 6.

[0040] Specifically, the sand screening device is mainly used for grading and separating mixed materials. During the working process, the mixed materials may contain a large amount of soil and impurities, which may block the filter holes and adhere to the inner wall of the cylinder, thereby affecting the subsequent filtering effect. In addition, the sizes of the stones in the materials are different, and the stones of different sizes have different uses. The mixed materials also contain fine sand, which needs to be graded. The filtering assembly 2 is used for screening large stones, small stones and fine sand, and classifying and collecting them. The cleaning assembly 3 is used for cleaning the filter cylinder in the filtering assembly 2 and improving the screening efficiency of the ore. The detection assembly 4 is used for detecting the number of blocked filter holes. The feeding unit 5 is used for transporting the mixed materials into the filtering assembly 2. The discharging assembly 6 is used for collecting the separated ore.

[0041] As shown in Figure 3 , the support assembly 1 includes a column 11, which is located on the horizontal ground. The column 11 is provided with a bottom water tank 12 at the top end. The column 11 and the bottom water tank 12 are fixedly connected. The outer wall of the bottom water tank 12 is provided with a mounting block 13, which is fixedly connected with the bottom water tank 12. One end of the bottom water tank 12 is provided with a driving assembly 7.

[0042] Specifically, the support assembly 1 is used for supporting the filtering assembly 2. The column 11 stands on the horizontal ground. The column 11 is provided with a bottom water tank 12 at the top end. The bottom water tank 12 is used for storing cleaning water, which is used to provide a screening environment for the mixed materials, thereby improving the screening efficiency by the driving of water flow. The driving assembly 7 is used to provide power to control the rotation of the filtering assembly 2 and screen the mixed materials.

[0043] As shown in Figures 3-5 , the filtering assembly 2 includes an outer cylinder 21, a middle cylinder 22 and an inner cylinder 23. The outer cylinder 21 is located at the top end of the bottom water tank 12. The outer cylinder 21 and the bottom water tank 12 are fixedly connected. The outer cylinder 21 is in communication with the bottom water tank 12. The middle cylinder 22 is located in the outer cylinder 21. The middle cylinder 22 and the outer cylinder 21 are rotatably connected. The inner cylinder 23 is located in the middle cylinder 22. The outer wall of the inner cylinder 23 is provided with a connecting column 24. One end of the connecting column 24 is fixedly connected with the outer wall of the inner cylinder 23. The other end of the connecting column 24 is rotatably connected with the inner wall of the middle cylinder 22. The inner walls of the middle cylinder 22 and the inner cylinder 23 are both provided with a plurality of filter holes.

[0044] Specifically, the outer cylinder 21 is a fixed cylinder, the middle cylinder 22 and the inner cylinder 23 are filter cylinders, the filter hole diameter of the inner cylinder 23 is larger than that of the middle cylinder 22, the inner cylinder 23 is used to filter out large stones in the mixed material, the middle cylinder 22 is used to filter out small stones in the mixed material, and the remaining fine sand in the mixed material will settle in the outer cylinder 21. However, during the filtering process, a large amount of soil will be included in the mixed material, so the soil will be carried during the filtering process. The probability of mud blocking the filter holes of the middle cylinder 22 and the inner cylinder 23 is high, wherein the two ends of the middle cylinder 22 are rotatably connected with the outer cylinder 21, and the inner cylinder 23 is rotatably connected with the middle cylinder 22 through the connecting column 24.

[0045] As shown in Figure 6 , Figure 7 , the driving assembly 7 includes a rotating motor 71, a transmission rod 72 and a main gear 73. The rotating motor 71 is located on the upper surface of the mounting block 13, the fixed end of the rotating motor 71 is fixedly connected with the mounting block 13, the output end of the rotating motor 71 is provided with the transmission rod 72, the rod body of the transmission rod 72 is provided with the main gear 73, the main gear 73 is connected with the tooth pattern of the middle cylinder 22, the end of the transmission rod 72 away from the rotating motor 71 is provided with a rotating disc 74, one side of the rotating disc 74 is provided with a transmission wheel 75, the transmission wheel 75 away from the rotating disc 74 is provided with a secondary gear 76, and the secondary gear 76 is connected with the tooth pattern of the inner cylinder 23.

[0046] Specifically, the rotating motor 71 is used as a power source to control the rotation of the transmission rod 72. The rotation of the transmission rod 72 will drive the rotation of the main gear 73 and the rotating disc 74. The rotation of the main gear 73 is used to drive the rotation of the middle cylinder 22. The rotation of the rotating disc 74 will drive the rotation of the transmission wheel 75. The rotation of the transmission wheel 75 drives the rotation of the secondary gear 76. The rotation of the secondary gear 76 is used to drive the rotation of the inner cylinder 23. In turn, the rotating motor 71 controls the rotation of the middle cylinder 22 and the inner cylinder 23, thereby realizing the filtering process.

[0047] As shown in Figure 10 , the detection assembly 4 includes a circular ring 41 and a conductive column 42. The circular ring 41 is located in the filter hole of the middle cylinder 22 and the inner cylinder 23, and is slidably connected with the inner wall of the filter hole. The conductive column 42 is located in the middle cylinder 22 and the inner cylinder 23, and the two ends of the conductive column 42 are connected with the circular ring 41. The circular ring 41 is made of copper.

[0048] Specifically, the detection assembly 4 is used for detecting the number of blocked filter holes, wherein the inner cavity is located inside the middle cylinder 22 and the inner cylinder 23, the inner cavity is communicated with the filter holes at both ends, the conductive column 42 is located in the inner cavity, the conductive column 42 is provided with a plurality of conductive columns, so that the two ends of the conductive column 42 contact the filter holes, the two ends of the conductive column 42 are connected with external wires, then the circular ring 41 is located in the filter hole, in normal state, the conductive column 42 contacts the circular ring 41, thereby forming a circuit, and because the circular ring 41 is in sliding connection with the inner wall of the filter hole, when the corresponding filter hole is blocked by mud, the circular ring 41 is deviated due to the influence of mud or minerals, thereby the circular ring 41 is dislocated with the conductive column 42, and the original overall circuit is disconnected, when the filter hole is in the cleaning water at this time, the water has a certain conductivity, the resistance value between the conductive columns 42 is increased, if the filter hole is blocked by mud, the resistance value is continuously increased, and the increase of the resistance value is related to the water content of the mud, the higher the water content, the lower the increase of the resistance value, thereby the size of the resistance value is indirectly judged whether the filter hole is blocked.

[0049] As shown in Figure 8 , Figure 9 , the cleaning assembly 3 comprises an air pipe 31 and an output pipe 32, the output pipe 32 is located in the bottom water tank 12, the output pipe 32 is fixedly connected with the inner wall of the bottom water tank 12, the air pipe 31 is located in the output pipe 32, the bottom end of the output pipe 32 is provided with an air outlet, the bottom end of the output pipe 32 is provided with a fixed column 33, the top end of the fixed column 33 is provided with a tapered column 34, the tapered column 34 is fixedly connected with the fixed column 33, and the tapered column 34 is matched with the air outlet.

[0050] Specifically, the cleaning assembly 3 is used for providing bubbles to clean the filter cylinder in the filter assembly 2, cleaning the filter holes blocked by mud, and screening the mixture through the flow of bubbles and the rotation of the filter cylinder, one end of the air pipe 31 is communicated with the external air pipe 31, the air pipe 31 discharges air, and the air flow is formed in the water, the air flow passes through the air outlet at the bottom end of the output pipe 32, and then the air flow forms bubbles outside the air outlet, wherein the air outlet is matched with the tapered column 34, the tapered column 34 is used for adjusting the size of the air outlet, when the distance between the air outlet and the tapered column 34 is closer, the air outlet is smaller, the bubbles are smaller, the number is more, and the cleaning effect is improved, on the contrary, the distance is farther, the air outlet is larger, the bubbles are larger, the number is less, and the coverage is increased.

[0051] As shown in Figure 2 , Figure 8 , the outer wall of the bottom water tank 12 is provided with a fixed block 35, the fixed block 35 is fixedly connected with the bottom water tank 12, and the output pipe 32 is provided with an electromagnetic spring 36 between the fixed block 35.

[0052] Specifically, the electromagnetic spring 36 is connected to an external power source at both ends, used to control the up and down movement of the output pipe 32. When the device is working, according to the resistance value between the conductive columns 42 in the detection assembly 4, the number and position of the blocked holes are judged, and then the electromagnetic spring 36 at the corresponding position is controlled to work. After the electromagnetic spring 36 is powered on, a magnetic field is generated, and through the interaction of magnetic force, the electromagnetic spring 36 is retracted, which drives the output pipe 32 to move, thereby adjusting the distance between the output pipe 32 and the conical column 34.

[0053] As shown in Figure 2 The discharge assembly 6 includes a main collecting pipe 61, a secondary collecting pipe 62, and a liquid pipe 63. The main collecting pipe 61 is located on the side of the inner cylinder 23 away from the feeding unit 5, the secondary collecting pipe 62 is located at the bottom end of the main collecting pipe 61, and the liquid pipe 63 is located at the bottom end of the secondary collecting pipe 62.

[0054] Specifically, the main collecting pipe 61 is used to collect large stones discharged from the inner cylinder 23, the secondary collecting pipe 62 is used to collect small stones discharged from the middle cylinder 22, and the liquid pipe 63 is used to discharge mud and fine sand from the external pipe.

[0055] Working principle: First, the mixed material is fed into the filtering assembly 2 through the feeding unit 5. Rotating the motor 71 controls the rotation of the transmission rod 72, which drives the main gear 73 and the rotating disc 74 to rotate, thereby rotating the inner cylinder 23 and the middle cylinder 22. The rotation of the inner cylinder 23 and the middle cylinder 22 screens the mixed material, wherein the inner cylinder 23 filters out large stones from the mixed material, and the middle cylinder 22 filters out small stones from the mixed material. The remaining fine sand in the mixed material will settle in the outer cylinder 21 and be finally collected by the discharge assembly 6. During this period, the conductive columns 42 are connected to external wires at both ends, thereby generating a resistance value between the conductive columns 42. When the filter hole is blocked by mud, the circular ring 41 will be affected by the mud or minerals and will be offset, thereby causing the circular ring 41 and the conductive column 42 to be misaligned, increasing the resistance value. The higher the soil content, the higher the resistance value. Therefore, according to the resistance value, it is indirectly determined whether the filter hole is blocked. The electromagnetic spring 36 at the corresponding position is controlled to work. The retraction of the electromagnetic spring 36 drives the output pipe 32 to move, thereby adjusting the distance between the output pipe 32 and the conical column 34. The closer the distance between the air outlet hole and the conical column 34, the smaller the air outlet hole, the smaller the bubble, and the more the number, thereby improving the cleaning effect. Conversely, the farther the distance, the larger the air outlet hole, the larger the bubble, and the fewer the number, thereby increasing the coverage.

[0056] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sand and gravel screening device with self-cleaning function, characterized in that: The sand and gravel screening device includes a support component (1), a filter component (2) and a cleaning component (3). The support component (1) is provided with a filter component (2) at its top. The filter component (2) is used to filter out materials of different sizes. The support component (1) and the filter component (2) are provided with a cleaning component (3). The cleaning component (3) is used to clean the filter holes blocked by mud. The filter component (2) is provided with a detection component (4). The detection component (4) is used to detect the number of filter holes blocked by mud. The filter component (2) is provided with a feeding unit (5) at one end and a discharge component (6) at the other end. The filter assembly (2) includes an outer cylinder (21), a middle cylinder (22) and an inner cylinder (23). The inner cylinder (23) is located inside the middle cylinder (22). The inner walls of the middle cylinder (22) and the inner cylinder (23) are provided with a number of filter holes. The detection component (4) includes a ring (41) and a conductive post (42). The ring (41) is located inside the filter holes of the middle cylinder (22) and the inner cylinder (23). The ring (41) is slidably connected to the inner wall of the filter holes. The conductive post (42) is located inside the middle cylinder (22) and the inner cylinder (23). Both ends of the conductive post (42) are connected to the ring (41). The ring (41) is made of copper. The cleaning component (3) includes an air pipe (31) and an output pipe (32). The output pipe (32) is located inside the bottom water tank (12) and is fixedly connected to the inner wall of the bottom water tank (12). The air pipe (31) is located inside the output pipe (32). An air outlet is provided at the bottom end of the output pipe (32). A fixing post (33) is provided at the bottom end of the output pipe (32). A conical post (34) is provided at the top end of the fixing post (33). The conical post (34) is fixedly connected to the fixing post (33) and cooperates with the air outlet. The bottom water tank (12) is provided with a fixing block (35) on its outer wall. The fixing block (35) is fixedly connected to the bottom water tank (12). An electromagnetic spring (36) is provided between the output pipe (32) and the fixing block (35). The discharge assembly (6) includes a main collection pipe (61), a secondary collection pipe (62) and a liquid pipe (63). The main collection pipe (61) is located on the side of the inner cylinder (23) away from the feeding unit (5). The secondary collection pipe (62) is located at the bottom of the main collection pipe (61), and the liquid pipe (63) is located at the bottom of the secondary collection pipe (62).

2. The sand and gravel screening device with self-cleaning function according to claim 1, characterized in that: The support component (1) includes a column (11) located on a horizontal ground. The top of the column (11) is provided with a bottom water tank (12). The top of the column (11) is fixedly connected to the bottom water tank (12). The outer wall of the bottom water tank (12) is provided with an installation block (13). The installation block (13) is fixedly connected to the bottom water tank (12). One end of the bottom water tank (12) is provided with a drive component (7).

3. A sand and gravel screening device with self-cleaning function according to claim 2, characterized in that: The outer cylinder (21) is located at the top of the bottom water tank (12). The outer cylinder (21) is fixedly connected to the bottom water tank (12) and communicates with the bottom water tank (12). The middle cylinder (22) is located inside the outer cylinder (21). The middle cylinder (22) is rotatably connected to the outer cylinder (21). The outer wall of the inner cylinder (23) is provided with a connecting column (24). One end of the connecting column (24) is fixedly connected to the outer wall of the inner cylinder (23), and the other end of the connecting column (24) is rotatably connected to the inner wall of the middle cylinder (22).

4. A sand and gravel screening device with self-cleaning function according to claim 3, characterized in that: The drive assembly (7) includes a rotating motor (71), a transmission rod (72), and a main gear (73). The rotating motor (71) is located on the upper surface of the mounting block (13). The fixed end of the rotating motor (71) is fixedly connected to the mounting block (13). The output end of the rotating motor (71) is provided with a transmission rod (72). The transmission rod (72) is provided with a main gear (73). The main gear (73) is connected to the toothed part of the middle cylinder (22). The end of the transmission rod (72) away from the rotating motor (71) is provided with a turntable (74). The turntable (74) is provided with a transmission wheel (75) on one side. The transmission wheel (75) is provided with a secondary gear (76) away from the turntable (74). The secondary gear (76) is connected to the toothed part of the inner cylinder (23).

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