A raw material impurity wet separation device for machine-made sand production

Abstract

The present application relates to the technical field of mechanism sand screening, and particularly relates to a raw material impurity wet separation device for mechanism sand production, which comprises a main frame, a separation unit is arranged on the top of the main frame; the separation unit comprises a fixed frame arranged on the top of the main frame, an outer cylinder assembly is rotatably connected to the inside of the fixed frame, an inner cylinder assembly is arranged in the inside of the outer cylinder assembly, the outer cylinder assembly comprises a cylinder one rotatably connected to the inner wall of the fixed frame, and a flow guide strip is fixedly arranged in the inside of the cylinder one; the inner cylinder assembly comprises a cylinder two rotatably connected to the fixed frame, a plurality of installation openings are formed through the circumferential outer wall of the cylinder two, a filter screen is fixedly connected to the inside of the installation openings, and a baffle is rotatably connected to the position close to the filter screen of the inner wall of the cylinder two. The present application improves the cleanliness of finished sand and the fine sand recovery rate, realizes automatic cleaning and anti-blocking of the filter screen and the flow guide strip, reduces resource waste, sewage treatment and maintenance cost, and guarantees stable operation of the equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanism sand screening, in particular to a raw material impurity wet separation device for mechanism sand production. BACKGROUND

[0002] The demand for sand and gravel in the field of building infrastructure continues to rise. Natural sand is becoming an important alternative due to decreasing reserves and strict mining control, and is widely used in the preparation of building materials such as concrete. The raw material of mechanism sand contains large impurities, sticky clay, fine particle stone powder, etc. If not effectively removed, it will cause the imbalance of product gradation, exceed the standard of mud content, and affect the performance of concrete. The industry generally adopts the process of "first dry separation, then wet separation": dry separation removes large impurities and loose dust through screening and air separation, reducing the load of wet separation; wet separation further removes sticky impurities and purifies sand and gravel with sand washing machines and cyclones.

[0003] However, the wet process of this process has two key problems: first, the loss of fine particles is serious: 0.2mm below stone powder (MB value qualified can improve the density of concrete, which is the key to gradation), because the water flow speed and separation chamber parameters of existing wet process equipment cannot match the sedimentation characteristics of fine particles, a large amount of fine particles are discharged with waste water, and the recovery rate is less than 70%. This not only destroys the product gradation, but also increases the cost of additional stone powder, and increases the content of fine particles in waste water, increasing the load of sewage treatment;

[0004] Second, the equipment is easy to block and the maintenance cost is high: the sticky clay remaining after dry separation forms mud balls when it comes into contact with water, which adheres to the screen, cyclone and other components, blocking the screen holes and flow channels, resulting in a decrease in equipment efficiency, and even shutdown. SUMMARY

[0005] The present application relates to the technical field of mechanism sand screening, in particular to a raw material impurity wet separation device for mechanism sand production.

[0006] To solve the above technical problems, one technical solution adopted by the present application is to provide a raw material impurity wet separation device for mechanism sand production, comprising a main frame, wherein the top of the main frame is provided with a separation unit;

[0007] The separation unit comprises a fixed frame installed on the top of the main frame, the fixed frame is rotatably connected with an outer cylinder assembly inside, the outer cylinder assembly is provided with an inner cylinder assembly inside, the outer cylinder assembly comprises a cylinder one rotatably connected with the inner wall of the fixed frame, the cylinder one is fixedly installed with a flow guide strip inside, and the main body of the flow guide strip adopts a spiral design;

[0008] The inner cylinder assembly comprises a cylinder two rotationally connected with the fixed frame, a plurality of installation openings are formed through the circumferential outer wall of the cylinder two, a filter screen is fixedly connected inside the installation opening, a baffle is rotationally connected to the inner wall of the cylinder two close to the filter screen, and a cleaning assembly is arranged inside the inner cylinder assembly close to the flow guide strip.

[0009] The outer wall of the cylinder two is provided with an installation cavity corresponding to the position of the baffle, the bottom end of the baffle extends into the installation cavity, the bottom end of the baffle in the installation cavity is fixedly connected with a docking rod, and a torsional spring is arranged inside the installation cavity close to the docking rod.

[0010] The outer wall of the filter screen is provided with a thin plate close to the position of the baffle, and a knocking rod is fixedly installed at the end of the baffle close to the thin plate.

[0011] The inner wall of the cylinder one is provided with a waste opening at one end close to the flow guide strip, the inner wall of the cylinder one is provided with a discharge opening at the other end close to the flow guide strip, a pushing plate is fixedly installed inside the discharge opening close to the flow guide strip, and a flow guide surface is formed on one side of the flow guide strip.

[0012] The two ends of the fixed frame are fixedly connected with a fixed plate through bolts, the side wall of the fixed plate is fixedly connected with an installation plate, the bottom end of the installation plate is fixedly connected with a spray pipe, the spray pipe extends into the cylinder two, a plurality of spray heads are arranged on the outer wall of the spray pipe in the cylinder two, a water delivery pipe is arranged on the bottom of the fixed plate close to the cleaning assembly, and the water delivery pipe extends into the cylinder one through the fixed frame.

[0013] The two ends of the fixed frame are symmetrically provided with a docking groove, the two ends of the cylinder one extend into the docking groove, a transmission gear is rotationally connected inside the docking groove close to the docking groove, a docking tooth one is arranged on the inner wall of the cylinder one close to the transmission gear, a docking tooth two is arranged on the outer wall of the cylinder two close to the transmission gear, the transmission gear is meshingly connected with the docking tooth one and the docking tooth two respectively, a driving motor is fixedly installed on the outer wall of the fixed plate corresponding to the transmission gear, and the output end of the driving motor is fixedly connected with the transmission gear.

[0014] The cleaning assembly comprises a fixed rod fixedly connected with the fixed frame at two ends, a sliding block is slidingly connected to the outer wall of the fixed rod, a movable slot is formed on the outer wall of the fixed rod close to the two ends, a sliding slot is formed on the outer wall of the fixed rod between the movable slots, a docking block is arranged inside the sliding block corresponding to the sliding slot, the docking block extends into the sliding slot and is slidingly connected, and a clamping slot is formed on the bottom of the sliding block corresponding to the flow guide strip.

[0015] The application discloses a raw material impurity wet separation device for manufactured sand production.

[0016] 1. Ensure the cleaning of the material, improve the cleanliness of the finished sand, and the separation unit is inclined, which can guide the manufactured sand to move orderly from the higher end to the lower end of the second cylinder by gravity and the rotating power of the second cylinder, prolong the residence time of the material in the second cylinder; at the same time, the higher end of the second cylinder is not provided with a mounting hole, so that the material that has just entered the second cylinder and has not been cleaned by high pressure can be prevented from falling into the first cylinder through the filter screen in advance, and it is ensured that the manufactured sand passes through the cleaning process in the second cylinder. In addition, the arc-shaped baffle in the second cylinder can smoothly lift the material, and the material is lifted and then smoothly falls after the second cylinder rotates, the rolling range of the material is increased, the material and the high-pressure water flow sprayed by the spray head of the spray pipe are fully contacted, the bonding state between particles is broken, the sticky clay and fine mud wrapped on the surface of the manufactured sand are fully exposed and stripped, and the problems of incomplete cleaning and excessive mud content in the finished sand in the traditional wet separation are solved.

[0017] 2. Realize the self-cleaning and anti-blocking of the filter screen, reduce the maintenance frequency and cost of the equipment, and the baffle is turned over due to the weight of the sand and gravel during the rotating and lifting process, and simultaneously drives the abutting rod in the mounting cavity to extrude the torsional spring; after the sand and gravel falls from the baffle and loses the weight pressure, the torsional spring is quickly reset and drives the baffle to reset through the abutting rod, and the knocking rod at the end of the baffle will impact the thin plate fixed on the filter screen when the baffle is reset. The thin plate can uniformly transmit the high-frequency vibration generated by the knocking to the entire surface of the filter screen, and shake off the sand and gravel and mud balls stuck in the filter screen holes, so that the filter efficiency is prevented from being reduced due to the filter screen blockage; meanwhile, the thin plate can buffer the impact force of the knocking rod, prevent the filter screen from being deformed or damaged due to excessive local stress, and prolong the service life of the filter screen. The linkage structure can realize the automatic cleaning of the filter screen without an additional power source, solve the problem that the traditional equipment needs to be frequently stopped for cleaning and removing the blocked parts, and reduce the labor maintenance cost and downtime loss.

[0018] 3. High-efficiency recovery of fine sand, reduction of resource waste and sewage treatment load, transmission gear can synchronously drive cylinder 1 and cylinder 2 to rotate in opposite directions, cylinder 1 rotates to drive the internal spiral guide strip to rotate, the guide strip guides the mixture of soil and fine sand falling from the filter screen into cylinder 1 to spiral upward through the guide surface; at the same time, the water pipe transports water flow from the higher end of cylinder 1 to the inside, forming a "spiral upward material" and a "water flow from top to bottom" counter-attack. Because the density of fine sand is greater than that of soil particles, fine sand is more likely to adhere to the guide surface and be transported upward along the spiral structure, while soil particles are easily dispersed due to their light weight and will be separated from fine sand under the impact of water flow and carried to the bottom of cylinder 1 from the waste outlet, and finally fine sand is recovered from the discharge port of cylinder 1. This design precisely matches the density difference between fine sand and soil, greatly improves the recovery rate of qualified stone powder below 0.2mm, avoids the problem of fine sand loss with wastewater in traditional equipment, reduces resource waste and the cost of additional stone powder, reduces the content of fine particles in wastewater, and reduces the load of sewage treatment.

[0019] 4. Automatic cleaning of residual clay on guide strip, ensuring stable transportation, the clamping groove on the bottom of the sliding block in the cleaning assembly is matched with the guide strip, and the sliding block is matched with the sliding groove on the fixed rod through the internal butt joint block, which can move stably along the fixed rod. When the guide strip rotates with cylinder 1, the bottom end of the guide strip is connected with the clamping groove of the sliding block, which drives the sliding block to rise along the fixed rod. The sliding block scrapes off the residual clay on the surface of the guide strip and the guide surface during the rising process, avoiding the accumulation of clay affecting the transportation effect of the guide strip on the material; when the sliding block moves to the top end of the fixed rod, it will be connected with the push plate in cylinder 1, the push plate pushes the sliding block to flip, which synchronously makes the butt joint block switch to another sliding groove through the movable slot, and the sliding block falls along the new sliding groove to the bottom end of the fixed rod after flipping to reset, realizing the automatic cleaning of the guide strip. This structure can ensure stable material transportation of the guide strip for a long time without manual intervention, further reducing the maintenance requirements of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] To make the purpose, technical scheme and advantages of the present application clearer, the following will combine the drawings to

[0021] make a detailed description.

[0022] It should be noted that the technical terms or scientific terms used in the present application should be understood as the general meaning understood by those skilled in the art to which the present application belongs, unless otherwise defined. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Figure 1 It is a three-dimensional structure diagram of a raw material impurity wet separation device for machine-made sand production of the present application;

[0024] Figure 2 It is a separation diagram of a raw material impurity wet separation device for machine-made sand production of the present application;

[0025] Figure 3 It is a separation unit side view of a raw material impurity wet separation device for machine-made sand production of the present application;

[0026] Figure 4 It is a first-stage separation diagram of a separation unit of a raw material impurity wet separation device for machine-made sand production of the present application;

[0027] Figure 5 It is a second-stage separation diagram of a separation unit of a raw material impurity wet separation device for machine-made sand production of the present application;

[0028] Figure 6 It is a sectional view of an outer cylinder assembly of a raw material impurity wet separation device for machine-made sand production of the present application;

[0029] Figure 7 It is an enlarged view of an inner cylinder assembly of a raw material impurity wet separation device for machine-made sand production of the present application;

[0030] Figure 8 It is a dynamic separation diagram of an inner cylinder assembly of a raw material impurity wet separation device for machine-made sand production of the present application;

[0031] Figure 9 It is a separation diagram of a cleaning assembly of a raw material impurity wet separation device for machine-made sand production of the present application.

[0032] Marked as: 1, main frame; 2, separation unit; 21, fixed frame; 211, butt joint groove; 212, transmission gear; 22, fixed plate; 221, mounting plate; 222, spray pipe; 223, spray head; 224, water delivery pipe; 225, drive motor; 23, outer cylinder assembly; 231, cylinder one; 232, butt joint tooth one; 233, flow guide strip; 234, flow guide surface; 235, waste outlet; 236, discharge outlet; 237, push plate; 24, inner cylinder assembly; 241, cylinder two; 2411, mounting port; 2412, butt joint tooth two; 242, filter screen; 2421, thin plate; 243, mounting cavity; 244, baffle; 2441, knocking rod; 2442, butt joint rod; 245, torsional spring; 25, cleaning assembly; 251, fixed rod; 2511, sliding groove; 2512, movable slot; 252, sliding block; 2521, clamping groove; 2522, butt joint block. DETAILED DESCRIPTION

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict; the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left" and "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, can also be integrated; can be mechanical connection, can also be transmission connection; can be direct connection, can also be indirect connection through intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements.

[0035] Please refer to Figure 1 - Figure 9The utility model provides a raw material impurity wet separation device for machine-made sand production, which comprises a main frame 1, and a separation unit 2 is arranged on the top of the main frame 1; the separation unit 2 comprises a fixed frame 21 mounted on the top of the main frame 1, a rotatingly connected outer cylinder assembly 23 is arranged in the fixed frame 21, an inner cylinder assembly 24 is arranged in the outer cylinder assembly 23, the outer cylinder assembly 23 comprises a cylinder one 231 rotatingly connected with the inner wall of the fixed frame 21, a flow guide strip 233 is fixedly arranged in the cylinder one 231, the main body of the flow guide strip 233 is designed in a spiral shape, a waste port 235 is formed through the cylinder one 231 at one end close to the flow guide strip 233, a discharge port 236 is formed through the cylinder one 231 at the other end close to the flow guide strip 233, a push plate 237 is fixedly arranged in the discharge port 236 close to the flow guide strip 233, and a flow guide surface 234 is arranged on one side of the flow guide strip 233.

[0036] The inner cylinder assembly 24 comprises a cylinder two 241 rotatingly connected with the fixed frame 21, a plurality of mounting holes 2411 are formed through the circumferential outer wall of the cylinder two 241, a filter screen 242 is fixedly connected in the mounting hole 2411, a baffle 244 is rotatingly connected to the inner wall of the cylinder two 241 close to the filter screen 242, and a cleaning assembly 25 is arranged in the inner cylinder assembly 24 close to the flow guide strip 233.

[0037] Through the above technical scheme, the flow guide strip 233 is spirally fixed in the cylinder one 231, the flow guide surface 234 is used for pushing the material to move spirally, the waste port 235 and the discharge port 236 are used for distributing the light and heavy materials, the cylinder two 241 is rotated to bring the material to tumble, the knocking rod 2441 is used for periodically knocking the thin plate 2421 to clean the filter screen, the filter screen 242 is inclined to enhance the filtering, the sliding block 252 is engaged with the flow guide strip 233 through the clamping groove 2521, is lifted along the fixed rod 251, the butt joint block 2522 is matched with the sliding groove 2511 to prevent deviation, and the push plate 237 is used to trigger the overturning, and the sliding groove 2511 is switched through the movable groove 2512 to reset. The baffle 244 is reset by the torsional spring 245, and the knocking rod 2441 is used for high-frequency knocking to transmit vibration to clean the filter screen. The cylinder two 241 is used for primary screening and cleaning, then the cylinder one 231 is used for secondary purification, and reverse rotation is used to enhance separation.

[0038] The cylinder two 241 is rotated to bring the material to tumble, the knocking rod 2441 is used for periodically knocking the thin plate 2421 to clean the filter screen, the filter screen 242 is inclined to enhance the filtering, the sliding block 252 is engaged with the flow guide strip 233 through the clamping groove 2521, is lifted along the fixed rod 251, the butt joint block 2522 is matched with the sliding groove 2511 to prevent deviation, and the push plate 237 is used to trigger the overturning, and the sliding groove 2511 is switched through the movable groove 2512 to reset. The baffle 244 is reset by the torsional spring 245, and the knocking rod 2441 is used for high-frequency knocking to transmit vibration to clean the filter screen. The cylinder two 241 is used for primary screening and cleaning, then the cylinder one 231 is used for secondary purification, and reverse rotation is used to enhance separation.

[0039] By adopting the technical scheme, the bottom end of the baffle 244 extends into the mounting cavity 243 through the butt joint rod 2442 and is elastically connected with the torsion spring 245. When the baffle 244 is overturned by the gravity of the material, the butt joint rod 2442 compresses the torsion spring 245 to store energy. When the material slides down, the torsion spring 245 releases energy to drive the baffle 244 to reset. The end of the baffle 244 knocks the outer wall thin plate 2421 of the filter screen 242 when resetting the knocking rod 2441, and the thin plate 2421 uniformly transmits the impact force to the filter screen 242. The mounting cavity 243 limits the overturning angle of the baffle 244 and protects the torsion spring 245. The rotation of the baffle 244 is converted into the deformation of the torsion spring 245 through the butt joint rod 2442, and the elastic reset is converted into the impact of the knocking rod 2441, so that the mechanical energy is efficiently converted.

[0040] The fixed frame 21 is fixedly connected with the fixed plate 22 at both ends through bolts, the fixed plate 22 is fixedly connected with the mounting plate 221 on the side wall, the mounting plate 221 is fixedly connected with the spray pipe 222 at the bottom end, the spray pipe 222 extends to the inside of the cylinder two 241, a plurality of spray heads 223 are arranged on the outer wall of the spray pipe 222 in the cylinder two 241, the fixed plate 22 is provided with the water delivery pipe 224 at the bottom near the cleaning assembly 25, the water delivery pipe 224 extends to the inside of the cylinder one 231 through the fixed frame 21, the fixed frame 21 is symmetrically provided with the butt joint groove 211 at both ends, the cylinder one 231 extends to the inside of the butt joint groove 211 at both ends, the butt joint groove 211 is rotatably connected with the transmission gear 212 near the butt joint groove 211 in the inside, the cylinder one 231 is provided with the butt joint tooth one 232 on the inner wall near the transmission gear 212, the cylinder two 241 is provided with the butt joint tooth two 2412 on the outer wall near the transmission gear 212, the transmission gear 212 is meshingly connected with the butt joint tooth one 232 and the butt joint tooth two 2412, and the fixed plate 22 is fixedly provided with the driving motor 225 on the outer wall corresponding to the transmission gear 212. The output end of the driving motor 225 is fixedly connected with the transmission gear 212.

[0041] By adopting the technical scheme, the fixed frame 21 is bolted with the fixed plate 22 to form support, and the mounting plate 221 fixes the spray pipe 222. The transmission gear 212 meshes with the butt joint tooth one 232 and the butt joint tooth two 2412, and the driving motor 225 drives the transmission gear 212 to rotate, so that the cylinder one 231 and the cylinder two 241 rotate in opposite directions. The cylinder one 231 is embedded in the butt joint groove 211 at both ends to ensure concentricity, the spray pipe 222 and the water delivery pipe 224 independently supply water, the single-motor driving simplifies the structure, and the transmission gear 212 reduces the transmission.

[0042] The cleaning assembly 25 comprises a fixed rod 251 fixedly connected with the fixed frame 21 at two ends, a sliding block 252 slidingly connected with the outer wall of the fixed rod 251, and a movable slot 2512 formed in the outer wall of the fixed rod 251 near the two ends. A sliding slot 2511 is formed in the outer wall of the fixed rod 251 between the movable slots 2512, and a butt joint block 2522 is arranged in the sliding block 252 at a position corresponding to the sliding slot 2511. The butt joint block 2522 extends into the sliding slot 2511 and is slidingly connected. A clamping groove 2521 is formed in the bottom of the sliding block 252 at a position corresponding to the flow guide strip 233.

[0043] By adopting the above technical scheme, the two ends of the fixed rod 251 are fixed in the fixed frame 21, the sliding slot 2511 is used for guiding the butt joint block 2522, and the movable slot 2512 is used for realizing steering switching. The sliding block 252 is lifted and lowered along the sliding slot 2511 through the butt joint block 2522, the bottom clamping groove 2521 is matched with the flow guide strip 233, and the flow guide strip 233 is rotated to scrape off the clay on the flow guide surface 234. When the butt joint block 2522 slides into the movable slot 2512, the sliding block 252 is flipped by ninety degrees through the push plate 237, the sliding slot 2511 is automatically reset after switching.

[0044] The working principle and use flow of the embodiment of the application are as follows:

[0045] The separation unit 2 is inclined as a whole, and the higher end of the barrel two 241 is not provided with the mounting port 2411. The high end is the mechanism sand feeding end. At this time, the material just enters the barrel two 241 and has not been cleaned by high-pressure spraying and rolling of the baffle 244. The clay and fine sand have not been fully stripped. The absence of the mounting port 2411 can avoid that the material not cleaned is dropped into the barrel one 231 through the filter screen 242 in advance, so that it is ensured that the material needs to pass through the cleaning and rolling process in the barrel two 241 and then is separated from the bottom mounting port 2411 of the filter screen 242, the cleanliness of the separated fine sand is ensured, and impurities are avoided to be left. The baffle 244 in the barrel two 241 is arc-shaped. The arc-shaped structure can more smoothly lift and guide the material. In addition, when the arc-shaped baffle 244 is rotated and raised, the material can smoothly slide along the arc surface, the rolling range is increased, the contact between the material and the high-pressure water flow is more comprehensive, and the clay stripping effect is improved.

[0046] When in use, first start the drive motor 225, drive the transmission gear 212 to rotate counterclockwise by the drive motor 225, the rotation of the transmission gear 212 will drive the cylinder two 241 to rotate clockwise through the butt joint tooth two 2412, the spray pipe 222 is connected to the water source, then the water is sprayed out through the spray head 223, the machine-made sand is poured from the high end of the inner cylinder assembly 24, and then the machine-made sand is washed by the water flow, so as to prevent the machine-made sand from being washed. When the machine-made sand moves to the position close to the baffle 244, it will be lifted by the rotating baffle 244, and then it will fall after being lifted to a certain height, so as to make the machine-made sand produce "tumbling + impact" in the cylinder two 241, break the bonding state between the particles, and at the same time, expose the clay and fine mud wrapped on the surface of the machine-made sand to the high-pressure water flow, so as to solve the problem that it is difficult to wash the gap impurities by simple water flow, and avoid incomplete washing.

[0047] The washed clay and fine sand will be filtered by the filter screen 242, and then fall into the cylinder one 231 through the filter screen 242. The filter screen 242 is easy to be blocked by some sand and mud in the repeated filtering process, so the baffle 244 will be turned over by a certain angle under the weight of the sand and gravel during the rotation and lifting process of the baffle 244. The baffle 244 will drive the butt joint rod 2442 in the mounting cavity 243 to extrude the torsion spring 245 during the rotation of the baffle 244. When the baffle 244 is turned over to a certain height, the sand and gravel will fall, and the torsion spring 245 will reset quickly under the loss of weight. The baffle 244 will reset quickly through the butt joint rod 2442 during the resetting process, and the baffle 244 will knock the thin plate 2421 through the two knocking rods 2441 at the end during the resetting process. The knocking rod 2441 will produce high-frequency vibration when it hits the thin plate 2421, and the vibration will be evenly transmitted to the surface of the filter screen 242. The sand and mud stuck in the holes of the filter screen 242 will be shaken off, so as to avoid the decrease of the filtering efficiency caused by the blockage of the filter screen 242, and solve the pain point of "equipment easy to block and need to stop cleaning" in the background technology. After the sand and gravel after "tumbling + impact + washing" are filtered, they will be discharged from the cylinder two 241.

[0048] Water pipe 224 will transport water from the high end of the first cylinder 231 to its interior, the transmission gear 212 rotates to drive the second cylinder 241 to rotate, and the transmission gear 212 also drives the first cylinder 231 to rotate counterclockwise through the butt joint tooth 232, the rotation of the first cylinder 231 drives the guide strip 233 to rotate, and the rotation of the guide strip 233 drives the soil and fine sand in the interior of the first cylinder 231 to rise spirally, and in the process of rising, it is continuously washed by the water flow transported by the water pipe 224, forming a spiral upward material and a downward water flow. This design makes the fine sand continuously receive water flow in the process of rising, and the fine sand is more likely to adhere to the guide surface 234 and be transported upward along the spiral due to its large density, and the soil particles are easily dispersed due to their light weight, and the mixture is stripped under the impact of the water flow, and then is brought to the bottom of the first cylinder 231 from the waste outlet 235. The remaining fine sand is discharged from the discharge port 236 along with the guide surface 234.

[0049] The guide strip 233 is continuously washed by the water flow, but it is impossible to avoid the residues of clay on the surface of the guide strip 233 and the guide surface 234, so the cleaning assembly 25 above the guide strip 233 plays a cleaning role. The sliding block 252 in the cleaning assembly 25 is perpendicular to the inner wall of the first cylinder 231, and the clamping groove 2521 at the bottom of the sliding block 252 is matched with the guide strip 233. At the beginning, the sliding block 252 is located at the bottom end of the fixed rod 251, and when the guide strip 233 rotates, the bottom end thereof is inserted into the interior of the clamping groove 2521. The groove shape of the clamping groove 2521 matches the spiral contour of the guide strip 233, and the spiral direction of the clamping groove 2521 is completely consistent with that of the guide strip 233, so as to ensure that the bottom end of the guide strip 233 can be smoothly inserted into the clamping groove 2521 to form a fit. In the fitted state, the inner wall of the clamping groove 2521 can fully match the surface of the guide strip 233 and the guide surface 234, and the guide strip 233 rotates to drive the sliding block 252 to rise along the fixed rod 251. The abutting block 2522 in the sliding block 252 cooperates with the sliding groove 2511 on the fixed rod 251, so that the sliding block 252 does not shake during the rising process. The sliding block 252 rises along with the guide strip 233, and the clamping groove 2521 scrapes and cleans the surface thereof.

[0050] When the sliding block 252 moves to the top end along with the guide strip 233, it abuts against the push plate 237, and the abutting block 2522 also abuts against the movable groove 2512. Therefore, when the push plate 237 moves, it pushes the sliding block 252 to flip. The abutting block 2522 flips at the same time, and abuts against different sliding grooves 2511 through the movable groove 2512. When the sliding block 252 rotates by 90 degrees, the abutting is completed, and the sliding block 252 falls along the sliding groove 2511 to the bottom end of the fixed rod 251, abuts against the movable groove 2512 at the bottom end, and is reset due to gravity, and then the previous steps are repeated.

[0051] Compared with the prior art, the embodiments of the present application have the following advantages:

[0052] The first advantage is that the fine sand recovery efficiency is high. The driving motor 225 drives the transmission gear 212 to rotate, and the transmission gear 212 drives the cylinder one 231 and the cylinder two 241 to rotate in opposite directions through the butt joint tooth one 232 and the butt joint tooth two 2412. The spiral guide strip 233 in the cylinder one 231 rotates with the cylinder one 231, and cooperates with the water flow conveyed by the water pipe 224 to form a reverse collision, so that the fine sand and the soil are accurately separated by using the density difference between the fine sand and the soil, the qualified stone powder recovery rate is greatly improved, and the resource waste and the sewage treatment load are reduced.

[0053] The second advantage is that the automatic anti-blocking maintenance is convenient. When the baffle 244 bears the sand and gravel, the baffle 244 is turned over and the torsional spring 245 is extruded through the butt joint rod 2442. After the sand and gravel fall off, the torsional spring 245 is reset to drive the baffle 244 to quickly reset. The knocking rod 2441 of the baffle 244 strikes the thin plate 2421 of the filter screen 242, and the blockage in the hole of the filter screen 242 is shaken off. The sliding block 252 of the cleaning assembly 25 is adapted to the guide strip 233 through the clamping groove 2521, and is lifted along the fixed rod 251 to scrape the clay on the surface of the guide strip 233. The top end of the sliding block 252 is pushed and turned over by the push plate 237, and is gravity reset after switching the sliding groove 2511 through the movable slot 2512, so that the cycle cleaning is realized without manual intervention.

[0054] The third advantage is that the finished sand has high cleanliness. The separation unit 2 is inclined to prolong the residence time of the material in the cylinder two 241. The higher end of the cylinder two 241 is not provided with the installation port 2411 to avoid premature separation of the unwashed material. The arc-shaped baffle 244 rotates with the cylinder two 241 to roll the material, and cooperates with the high-pressure water flow sprayed by the spray head 223 of the spray pipe 222 to fully strip the clay on the surface of the material, so that the cleanliness of the finished sand is improved.

[0055] The fourth advantage is that the structure is stable and the energy efficiency is good. The single driving motor 225 synchronously drives the cylinder one 231, the cylinder two 241 and the subsequent linkage components through the transmission gear 212, without the need for an additional power source. The transmission structure is simplified, the fault points are reduced, the running stability of the equipment under high load working conditions is improved, and the manufacturing and running energy consumption is reduced.

[0056] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents. Such modifications or replacements will not change the essence of the corresponding technical solutions out of the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A raw material impurity wet separation device for manufactured sand production, characterized by, Include: The main frame (1) is provided with a separation unit (2) on the top; The separation unit (2) includes a fixed frame (21) mounted on the top of the main frame (1), a rotating connection is arranged inside the fixed frame (21), an inner cylinder assembly (24) is arranged inside the outer cylinder assembly (23), the outer cylinder assembly (23) includes a cylinder (231) rotatably connected with the inner wall of the fixed frame (21), a guide strip (233) is fixedly installed inside the cylinder (231), the main body of the guide strip (233) adopts a spiral design; The inner cylinder assembly (24) includes a cylinder (241) rotatably connected with the fixed frame (21), a plurality of installation openings (2411) are formed through the circumferential outer wall of the cylinder (241), a filter screen (242) is fixedly connected inside the installation opening (2411), a baffle (244) is rotatably connected to the inner wall of the cylinder (241) near the filter screen (242), a cleaning assembly (25) is arranged inside the inner cylinder assembly (24) near the guide strip (233); A waste port (235) is formed through the inside of the cylinder (231) near the guide strip (233), an outlet port (236) is formed through the inside of the cylinder (231) near the guide strip (233), a push plate (237) is fixedly installed inside the outlet port (236) near the guide strip (233), a guide surface (234) is formed on one side of the guide strip (233); The cleaning assembly (25) includes a fixed rod (251) fixedly connected with the fixed frame (21) at both ends, a sliding block (252) is slidably connected to the outer wall of the fixed rod (251), a movable groove (2512) is formed on the outer wall of the fixed rod (251) near both ends, a sliding groove (2511) is formed on the outer wall of the fixed rod (251) between the movable grooves (2512), a butt joint block (2522) is arranged inside the sliding block (252) corresponding to the sliding groove (2511), the butt joint block (2522) extends into the sliding groove (2511) and is slidably connected, and a clamping groove (2521) is formed on the bottom of the sliding block (252) corresponding to the guide strip (233).

2. The raw material impurity wet separation device for machine-made sand production according to claim 1, characterized in that: An installation cavity (243) is formed on the outer wall of the cylinder (241) corresponding to the baffle (244), the bottom end of the baffle (244) extends into the installation cavity (243), and the bottom end of the baffle (244) in the installation cavity (243) is fixedly connected with a butt joint rod (2442), and a torsion spring (245) is arranged inside the installation cavity (243) near the butt joint rod (2442).

3. The raw material impurity wet separation device for machine-made sand production according to claim 1, characterized in that: A thin plate (2421) is arranged on the outer wall of the filter screen (242) near the baffle (244), and a knocking rod (2441) is fixedly installed on the end of the baffle (244) near the thin plate (2421).

4. The raw material impurity wet separation device for machine-made sand production according to claim 1, characterized in that: The fixed frame (21) is fixedly connected with a fixed plate (22) at both ends, the fixed plate (22) is fixedly connected with a mounting plate (221) on the side wall, the mounting plate (221) is fixedly connected with a spraying pipe (222) at the bottom end, the spraying pipe (222) extends into the cylinder two (241), a plurality of spray heads (223) are arranged on the outer wall of the spraying pipe (222) in the cylinder two (241), and a water delivery pipe (224) is arranged on the bottom of the fixed plate (22) and close to the cleaning assembly (25), the water delivery pipe (224) extends through the fixed frame (21) and into the cylinder one (231).

5. The raw material impurity wet separation device for machine-made sand production according to claim 4, characterized in that: The fixed frame (21) is fixedly connected with a fixed plate (22) at both ends, the fixed plate (22) is fixedly connected with a mounting plate (221) on the side wall, the mounting plate (221) is fixedly connected with a spraying pipe (222) at the bottom end, the spraying pipe (222) extends into the cylinder two (241), a plurality of spray heads (223) are arranged on the outer wall of the spraying pipe (222) in the cylinder two (241), and a water delivery pipe (224) is arranged on the bottom of the fixed plate (22) and close to the cleaning assembly (25), the water delivery pipe (224) extends through the fixed frame (21) and into the cylinder one (231).

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