A sand cleaning device for resin sand casting surface

Abstract

The present invention relates to the technical field of sand cleaning on the surface of resin sand castings, and in particular to a device for sand cleaning on the surface of resin sand castings. Two barrel ends are respectively arranged at the front and rear sides of a frame, and a rotating barrel for accommodating sand cleaning steel balls is sealed and rotated between the two barrel ends. A driving member for driving the rotating barrel to rotate is also arranged on the frame, and a partition plate for pushing the steel balls to flip is arranged at intervals along the circumference of the inner wall of the rotating barrel; two ultrasonic transducers are respectively arranged on the inner walls of the two barrel ends; and injection members are respectively arranged in the barrel ends, and are used to spray a softener for softening the resin sand. The present invention adopts a comprehensive method of softener spraying, ultrasonic vibration generated by an ultrasonic transducer, and tumbling and knocking of steel balls to soften and physically remove the resin sand in a gentle manner, avoid excessive damage to the resin sand caused by traditional mechanical treatment, and effectively clean the blind holes and recessed areas on the casting surface that are difficult to reach through the ultrasonic vibration of the ultrasonic transducer, thereby achieving thorough and efficient removal of stubborn resin sand.

Description

Technical Field

[0001] The invention relates to the technical field of resin sand casting surface sand cleaning, in particular to a resin sand casting surface sand cleaning device. Background Art

[0002] Resin sand castings play an important role in the field of petroleum machinery manufacturing due to their excellent dimensional accuracy, surface finish and high production efficiency. For example, in the production of key components such as blowout preventers, such components usually need to have high strength, wear resistance and good dimensional stability to adapt to extreme working environments. Since the resin sand casting process can meet the above requirements, it occupies an important position in the field of petroleum equipment manufacturing.

[0003] Among them, sand cleaning is an indispensable part of the resin sand casting process. Its purpose is to remove impurities such as molding sand and clay remaining on the surface of the casting to ensure that the surface quality of the casting meets the standards. Currently, the commonly used sand cleaning methods include vibration sand removal, shot peening sand removal and grinding sand removal. Although the sand removal process can be carried out by manually holding the operating equipment, the sand on the surface of the casting can be removed to a certain extent, but due to the complex structure of some workpieces, the overall cleaning operation is more complicated. At the same time, it is difficult to completely remove the adhered sand and gravel only through vibration, grinding and spraying, and there may also be a risk of damage to the casting, affecting the overall quality.

[0004] In addition, there are some mechanically assisted sand cleaning methods, such as a casting sand cleaning device with authorization announcement number CN212443202U in the prior art. The device transmits vibrations through its own structure to clean the workpiece, and uses vibration to remove resin sand. However, for workpieces with complex internal structures, it is still difficult to completely remove the stubborn sand and gravel inside the blind holes and recessed parts on the workpiece.

[0005] Therefore, in view of the above problems, a resin sand casting surface cleaning device is proposed, which can effectively and thoroughly clean the stubborn sand and gravel, reduce the risk of potential damage to the casting, and improve the overall quality of the casting. Summary of the invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a resin sand casting surface sand cleaning device that can effectively and thoroughly clean stubborn sand and gravel.

[0007] The technical implementation scheme of the present invention is: a resin sand casting surface sand cleaning device, comprising: A rack, on which a centralizing frame is provided for collecting the discharged softener; Two cylinder ends are respectively arranged at the front and rear sides of the frame, and a rotating cylinder for accommodating resin sand castings and sand cleaning steel balls is sealed and rotated between the two cylinder ends. A driving member for driving the rotating cylinder to rotate is also arranged on the frame, and partition plates for driving the steel balls to flip are arranged at intervals along the circumferential direction on the inner wall of the rotating cylinder; Two ultrasonic transducers are respectively arranged on the inner walls of the two ends of the cylinder; The injection parts are respectively arranged in the barrel ends and used for injecting a softener for softening the resin sand. A liquid level sensor is arranged on the inner wall of one side of the barrel end. The liquid level sensor is electrically connected to the injection part and used for controlling the injection operation according to the change of the water level. The solenoid valve is arranged at the bottom of the drum and is used to connect the drum and the central frame. A filter screen that allows the flow of gravel is arranged at the valve port at the top of the solenoid valve. Proximity sensor 1 is arranged on both sides of the bottom of the drum, and proximity sensor 2 is arranged on both sides of the central frame. Proximity sensor 2 is electrically connected to proximity sensor 1 on the same side to control the opening and closing of the solenoid valve.

[0008] Furthermore, the driving part includes electric rollers installed on both sides of the frame, a group of connecting frames spaced front and back are arranged between the two sides of the frame, the connecting frames surround the rotating drum, and auxiliary rollers rotate between the top ends of the connecting frames. The auxiliary rollers and the electric rollers are in contact with the surface of the rotating drum to drive the rotating drum to rotate.

[0009] Furthermore, the injection component includes an infusion pump respectively installed on the two barrel ends, and a spray gun passing through the corresponding barrel end is connected to the water outlet of the infusion pump, and the spray gun is electrically connected to the liquid level sensor.

[0010] Furthermore, electric slide rails are provided on the inner walls of the two side barrel ends, and a cleaning brush rotates between the sliders of the electric slide rails on both sides. A motor whose output end is connected to the shaft end of the cleaning brush is also installed on the slider of one side of the electric slide rail to drive the cleaning brush to rotate and brush off the residual sand on the surface of the resin sand casting.

[0011] Furthermore, it also includes an electric push rod, and the number of the electric push rods is provided with two. The telescopic ends of the two electric push rods are respectively hingedly connected to the spray gun on one side, and the ends of the two electric push rods that are close to each other are connected.

[0012] Furthermore, the frame is symmetrically provided with diverter frames, the diverter frames are provided with valves for adding materials, and the two diverter frames are respectively connected to the water inlet of the infusion pump on one side by a connecting pipe.

[0013] Furthermore, a drainage pipe is connected between the two flow distribution frames and one side of the central frame, and a filter cartridge with a built-in filter plate is arranged in the middle of the drainage pipe for circulating and filtering the sand and gravel in the softener.

[0014] Furthermore, the top of the central frame is in an arc shape adapted to the surface of the rotating drum so as to fit the rotating drum during rotation.

[0015] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects: 1. The present invention adopts a comprehensive method of softener spraying, ultrasonic vibration generated by an ultrasonic transducer, and tumbling and knocking of steel balls to soften and physically remove resin sand in a gentle manner. This method avoids excessive damage to resin sand caused by traditional mechanical treatment, and effectively cleans blind holes and recessed areas on the surface of castings that are difficult to reach through the ultrasonic vibration of the ultrasonic transducer, thereby achieving thorough and efficient removal of stubborn resin sand and greatly improving the quality and efficiency of sand cleaning.

[0016] 2. The present invention utilizes the coordinated work of proximity sensor 1 and proximity sensor 2 to achieve accurate positioning and discharge of accumulated softener and resin sand, ensuring the stability of the softener liquid level, thereby ensuring the sand cleaning effect during the steel ball flipping process and ensuring the consistency of the overall sand cleaning quality.

[0017] 3. The present invention is provided with a cleaning brush driven by an electric slide rail. The cleaning brush can rotate under the drive of a motor and reciprocately brush the surface of the resin sand casting by the drive of the electric slide rail, thereby further enhancing the cleaning effect of the resin sand.

[0018] 4. The present invention designs a diversion frame and a central frame connected by a drainage pipe, which can recycle the used softener and use a filter plate filtering device to screen out the sand and gravel in the softener, thereby ensuring the cleanliness of the softener and realizing the effective recycling of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the cylinder end, rotating cylinder, partition plate and other components of the present invention.

[0021] Figure 3 It is a three-dimensional structural cross-sectional view of components such as the ultrasonic transducer, liquid level sensor and infusion pump of the present invention.

[0022] Figure 4 It is a three-dimensional structural cross-sectional view of the spray gun, connecting pipe, diverter frame and other components of the present invention.

[0023] Figure 5 It is a three-dimensional structural cross-sectional view of the frame, the central frame, the rotating drum and the partition plate of the present invention.

[0024] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of part A.

[0025] Figure 7 It is a three-dimensional structural cross-sectional view of the drum end, rotating drum, electric slide rail, cleaning brush and motor of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of components such as a liquid level sensor, a spray gun and an electric push rod of the present invention.

[0027] Fig. 9 It is a three-dimensional structural cross-sectional view of the drainage tube, filter cartridge, filter plate and other components of the present invention.

[0028] Names and serial numbers of parts in the figure: 100, resin sand casting, 1, frame, 11, central frame, 2, cylinder end, 21, rotating cylinder, 211, partition plate, 22, electric roller, 23, connecting frame, 24, auxiliary roller, 3, ultrasonic transducer, 31, liquid level sensor, 4, infusion pump, 41, spray gun, 42, connecting pipe, 43, diverter frame, 431, valve, 5, solenoid valve, 51, filter screen, 52, proximity sensor 1, 53, proximity sensor 2, 6, electric slide rail, 61, cleaning brush, 62, motor, 7, electric push rod, 8, drainage tube, 81, filter cartridge, 82, filter plate. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Embodiment: A device for cleaning the surface of resin sand castings, such as Figure 1-Figure 6 and Figure 8 As shown, including: The frame 1 is composed of a bottom plate and plate frames distributed on the left and right sides of the bottom plate and extending upward. A central frame 11 is fixedly arranged at the middle position of the top of the bottom plate of the frame 1 to collect the discharged softener; The two cylinder ends 2 are respectively fixedly arranged between the plate frames of the frame 1. The cylinder ends 2 on both sides are arranged in a front-to-back spacing and there is a spacing between them and the bottom plate below. At the same time, the openings of the two cylinder ends 2 are arranged facing each other. A cover door is provided on the cylinder end 2 at the front side to facilitate the taking and placing of loaded objects. A rotating drum 21 is sealed and rotated between the two cylinder ends 2. The rotating drum 21 and the cylinder ends 2 on both sides form a complete hollow closed cylinder body, which is responsible for loading and accommodating the steel balls required for sand cleaning and the resin sand casting 100 that needs sand cleaning. The cylindrical shape of the rotating drum 21 itself is used to limit the accumulation of steel balls, and through the rotation operation, the steel balls and the resin sand casting 100 are driven to move simultaneously. The steel ball is repeatedly knocked and rubbed to promote the shedding of the resin sand on the surface of the resin sand casting 100, so as to achieve the effect of sand cleaning; the frame 1 is also provided with a driving member for driving the rotating drum 21 to rotate, so as to drive the rotating drum 21 to realize automatic rotation operation, and the inner wall of the rotating drum 21 is provided with partition plates 211 for pushing the steel ball to flip along the circumferential interval, and the partition plates 211 rotate synchronously with the rotating drum 21. The unique spacing and protrusion design of the partition plates 211 can not only effectively drive the steel ball to flip, but also appropriately limit the flipping amplitude of the steel ball, so as to ensure more comprehensive coverage and contact between the steel ball and the resin sand casting 100, so as to achieve more efficient sand cleaning; Two ultrasonic transducers 3 are respectively arranged on the inner walls of the two barrel ends 2; The injection parts are respectively arranged in the cylinder end 2, and are used to inject the softener for softening the resin sand. A liquid level sensor 31 is fixedly arranged on the inner wall of the rear cylinder end 2. The liquid level sensor 31 is electrically connected to the injection parts, and is used to control the opening and closing of the injection operation according to the change of the water level. The solenoid valve 5 is arranged at the bottom of the drum 21 and is used to connect the drum 21 with the central frame 11. A filter screen 51 that allows the flow of gravel is arranged at the valve port at the top of the solenoid valve 5. Proximity sensors 52 are arranged on the left and right sides of the bottom of the drum 21. The two proximity sensors 52 are respectively located on the left and right sides of the solenoid valve 5. Proximity sensors 2 53 are arranged on the left and right sides of the central frame 11. The proximity sensor 2 53 is electrically connected to the proximity sensor 1 52 on the same side to control the opening and closing of the solenoid valve 5.

[0032] Specifically, the top of the centralizing frame 11 has an opening and is in an arc shape adapted to the surface of the rotating drum 21, so that the rotating drum 21 can be adaptively attached to the centralizing frame 11, thereby ensuring the close contact between the two for subsequent drainage operations; More specifically, in the above scheme, the sand cleaning is performed by turning over the steel balls, softening the resin sand with the softener, and vibrating the ultrasonic transducer 3. The softener first decomposes and softens the resin sand, so that the gravel layer attached to the surface of the resin sand casting 100 can be more easily removed. Then, the rotating drum 21 drives the stacked steel balls to turn over, so that the steel balls use their own fluidity to knock the resin sand casting 100 in a reciprocating covering manner, thereby removing the resin sand layer on its surface, so as to achieve a stable and gentle sand cleaning effect and avoid wear and tear caused by unnecessary mechanical operation. At the same time, due to the continuous spraying and accumulation of the softener, the softener will cover part of the lower side of the resin sand casting 100, and cooperate with the turning of the drum 21, and use the ultrasonic transducer 3 to perform ultrasonic vibration on the resin sand casting 100, so that the complex areas of the resin sand casting 100 that are difficult to clean are cleaned, thereby achieving a thorough and efficient sand cleaning operation. It is more important to note that, since the softener has a certain fluidity, in order to ensure that the steel ball has enough space for effective turning, the liquid level of the softener should be controlled at no more than two-thirds of the height of the resin sand casting 100 to ensure overall stable operation. Therefore, with the intelligent setting of the liquid level sensor 31, proximity sensor 1 52 and proximity sensor 2 53, the liquid level of the softener can be intelligently monitored, and the switching state of the injection part and the solenoid valve 5 can be automatically adjusted to accurately control the injection amount of the softener and timely discharge, thereby ensuring a stable and efficient sand cleaning environment, thereby achieving a better resin sand removal effect.

[0033] like Figure 1 and Figure 2 As shown, the driving member includes an electric roller 22 installed on the plate frames on both sides of the frame 1, and a group of connecting frames 23 spaced apart from each other are arranged between the left and right sides of the frame 1. The connecting frames 23 surround the rotating drum 21, and an auxiliary roller 24 rotates between the top ends of the connecting frames 23. The auxiliary roller 24 and the electric roller 22 are attached to the surface of the rotating drum 21 to drive the rotating drum 21 to rotate.

[0034] like Figure 3 , Figure 4 and Figure 8 As shown, the injection component includes an infusion pump 4 respectively installed on the top of the two barrel ends 2, and a spray gun 41 passing through the corresponding barrel end 2 is connected at the water outlet of the infusion pump 4. The spray gun 41 is a nozzle with a three-head muzzle, and the spray gun 41 is electrically connected to the liquid level sensor 31. The liquid level of the softener is monitored by the liquid level sensor 31 to realize automatic closing and opening control of the spray gun 41, thereby accurately adjusting the injection amount of the softener.

[0035] like Figure 7As shown, electric slide rails 6 are provided on the inner walls of the cylinder ends 2 on both sides, and a cleaning brush 61 rotates between the sliders of the electric slide rails 6 on both sides. The cleaning brush 61 slides in the left and right directions. A motor 62 whose output end is connected to the shaft end of the cleaning brush 61 is also installed on the slider of the front electric slide rail 6. In order to improve the sand cleaning effect, the cleaning brush 61 is driven to rotate by the motor 62, and the driving of the electric slide rail 6 is cooperated to remove the gravel layer remaining on the surface of the resin sand casting 100; here, as the rotating drum 21 rotates, the resin sand casting 100 placed inside rolls over and keeps in contact with the reciprocating cleaning brush 61, thereby achieving more thorough resin sand cleaning and optimizing the cleaning effect.

[0036] like Figure 8 As shown, it also includes an electric push rod 7, and there are two electric push rods 7. The telescopic ends of the two electric push rods 7 are respectively hingedly connected to the spray gun 41 on one side, and the ends of the two electric push rods 7 that are close to each other are connected. The telescopic operation of the electric push rod 7 drives the connected spray gun 41 to swing, so as to evenly spray the softener to ensure more comprehensive coverage of the resin sand casting 100.

[0037] like Figure 3 , Figure 4 and Figure 8 As shown, a diverter frame 43 is symmetrically arranged on the bottom plate of the frame 1, and a valve 431 for adding material is arranged in the diverter frame 43. A connecting pipe 42 is connected between the two diverter frames 43 and the water inlet of the infusion pump 4 on one side, respectively, so as to provide and store the required softener for the spraying operation of the softener, ensure the stable supply of the softener, and optimize the efficiency and effect of the spraying operation.

[0038] like Fig. 9 As shown, a drainage pipe 8 is connected between the two diversion frames 43 and one side of the central frame 11. A filter cartridge 81 with a built-in filter plate 82 is provided in the middle of the drainage pipe 8 for circulating and filtering gravel in the softener. The pump body is allowed to be installed on the drainage pipe 8 to extract the used softener in the central frame 11 and guide the softener to the diversion frame 43. The sand and gravel impurities in the softener can be effectively screened out through the filtering treatment of the filter plate 82, ensuring that the recycled softener maintains clean and stable quality, thereby optimizing the recycling process of the softener and improving the overall neatness and practicality.

[0039] When in use, first ensure that the frame 1 is placed on a stable ground, then open the cover door on the drum end 2, place the steel balls required for sand cleaning in the drum 21, and place the resin sand casting 100 that needs sand cleaning on the steel ball pile, then open the valves 431 on both sides to pour softener into each diversion frame 43, and after all preparatory work is completed, close the cover door of the drum end 2; Then, the electric roller 22 and the infusion pump 4 are started. With the push of the electric roller 22, the drum 21 and the objects inside it are driven to rotate. Under the synchronous drive of the auxiliary roller 24 and the electric roller 22, the drum 21 can rotate continuously, and the steel ball turns over with the rotation. Under the action of the partition plate 211, the steel ball is constantly turned over and hits the resin sand casting 100. At the same time, the infusion pump 4 after being turned on continuously extracts the softener in the corresponding diversion frame 43. The softener is transported upward through the connecting pipe 42, flows through the infusion pump 4 and is sprayed out through the spray gun 41. Then, the electric push rod 7 is started. , thereby pushing the connected spray gun 41 to swing, so that the sprayed softener will be evenly sprayed on the surface of the resin sand casting 100, thereby softening the resin sand attached to the surface. At the same time, the turning steel ball continuously hits the softened resin sand as it operates, thereby loosening and removing most of the gravel attached to the surface of the resin sand casting 100. In this process, the electric slide rail 6 will also continuously reciprocate to drive the cleaning brush 61 to move left and right, and the motor 62 will synchronously drive the cleaning brush 61 to rotate to brush the surface of the resin sand casting 100, thereby further processing the resin sand on the surface and ensuring a more complete surface sand cleaning process; As the softener is continuously sprayed, the softener will continuously accumulate in the drum 21. Meanwhile, the liquid level sensor 31 monitors the water level of the softener in real time. When the water level of the softener is below two-thirds of the resin sand casting 100, the spray gun 41 continues to spray and the ultrasonic transducer 3 is turned on. The ultrasonic transducer 3 converts electrical energy into vibration energy, and transmits vibration to the resin sand casting 100 through the softener. The vibration frequency enables the recessed and blind hole parts of the resin sand casting 100 to be effectively cleaned, thereby achieving more thorough and complete sand cleaning. On the contrary, when the water level of the softener exceeds two-thirds of the resin sand casting 100, the liquid level sensor 31 will transmit a corresponding signal to the control center, and then the control center controls the spray gun 41 to close, thereby stopping the spraying of the softener. Here, since the drum 21 is still in the rotating operation, the solenoid valve 5 will gradually approach the central frame 11 as it runs, so that the proximity sensor 1 52 on the left will first sense the proximity sensor 2 53, and then transmit the signal to the control center, and the control center controls the solenoid valve 5 to open, so that part of the softener is discharged through the solenoid valve 5 and flows down to the central frame 11, and the filter screen 51 simultaneously blocks the steel ball from falling in, and allows the gravel to communicate with the softener flowing down to be discharged together, and then, the proximity sensor 1 52 on the right side will sense the proximity sensor on the right side, thereby closing the solenoid valve 5, thereby stopping the discharge, and thus completing a cycle of softener discharge; and so on, the softener is discharged back and forth continuously until the water level of the softener reaches normal, and the liquid level sensor 31 will transmit a signal to restart the spray gun 41, thereby coordinating the overall operation to ensure the normal progress of the sand cleaning process; Finally, the softener in the central frame 11 will flow along the drainage pipe 8 toward the corresponding diversion frame 43. In this process, the sand mixed in the softener will be screened out through the filter cartridge 81 and the filter plate 82, and then the treated softener will re-enter the diversion frame 43, and the cycle will be repeated to provide the necessary resources for the spray gun 41.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A resin sand casting surface sand cleaning device, comprising: A frame (1), wherein a central frame (11) is provided on the frame (1); The invention is characterized in that it further comprises: two cylinder ends (2) respectively arranged at the front and rear sides of the frame (1); a rotating cylinder (21) for accommodating the resin sand casting (100) and the sand cleaning steel balls is sealed and rotated between the two cylinder ends (2); a driving member for driving the rotating cylinder (21) to rotate is also arranged on the frame (1); and partition plates (211) for driving the steel balls to turn over are arranged at intervals along the circumferential direction on the inner wall of the rotating cylinder (21); Two ultrasonic transducers (3) are respectively arranged on the inner walls of the two barrel ends (2); Injection components are respectively arranged in the barrel end (2), and a liquid level sensor (31) is arranged on the inner wall of one side of the barrel end (2), and the liquid level sensor (31) is electrically connected to the injection component; A solenoid valve (5) is arranged at the bottom of the rotating drum (21) and is used to connect the rotating drum (21) and the centralizing frame (11). A filter screen (51) that allows gravel to flow is arranged at the top valve port of the solenoid valve (5). Proximity sensors 1 (52) are arranged on both sides of the bottom of the rotating drum (21). Proximity sensors 2 (53) are arranged on both sides of the centralizing frame (11). The proximity sensors 2 (53) are electrically connected to the proximity sensors 1 (52) on the same side. The driving member comprises electric rollers (22) mounted on both sides of the frame (1); a group of connecting frames (23) spaced apart from each other are arranged between the two sides of the frame (1); the connecting frames (23) surround the rotating drum (21); an auxiliary roller (24) rotates between the top ends of the connecting frames (23); the auxiliary roller (24) and the electric roller (22) are attached to the surface of the rotating drum (21); The injection component comprises an infusion pump (4) respectively mounted on the two barrel ends (2); a spray gun (41) passing through the corresponding barrel end (2) is connected to the water outlet of the infusion pump (4); the spray gun (41) is electrically connected to the liquid level sensor (31).

2. A resin sand casting surface cleaning device according to claim 1, characterized in that: Electric slide rails (6) are provided on the inner walls of the barrel ends (2) on both sides, a cleaning brush (61) rotates between the sliders of the electric slide rails (6) on both sides, and a motor (62) whose output end is connected to the shaft end of the cleaning brush (61) is also installed on the slider of the electric slide rail (6) on one side.

3. A resin sand casting surface cleaning device according to claim 2, characterized in that: It also includes an electric push rod (7), wherein two electric push rods (7) are provided, and the telescopic ends of the two electric push rods (7) are respectively hingedly connected to the spray gun (41) on one side, and the ends of the two electric push rods (7) that are close to each other are connected.

4. A resin sand casting surface cleaning device according to claim 3, characterized in that: The frame (1) is symmetrically provided with flow diversion frames (43), the flow diversion frames (43) being provided with valves (431) for adding materials, and the two flow diversion frames (43) are respectively connected to the water inlet of the infusion pump (4) on one side via a connecting pipe (42).

5. A resin sand casting surface cleaning device according to claim 4, characterized in that: A drainage pipe (8) is connected between the two flow distribution frames (43) and one side of the concentration frame (11), and a filter cartridge (81) with a built-in filter plate (82) is provided in the middle of the drainage pipe (8).

6. A resin sand casting surface cleaning device according to claim 5, characterized in that: The top end of the centralizing frame (11) is in an arc shape adapted to the surface of the rotating drum (21) so as to fit the rotating drum (21) during rotation.

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