3D printing sand water washing and mud removing device

Abstract

The invention discloses a 3D printing sand washing and mud removing device, and belongs to the technical field of 3D printing sand treatment.The 3D printing sand washing and mud removing device is characterized in that the 3D printing sand washing and mud removing device comprises a cleaning box, the top of the cleaning box communicates with a hopper, a rotary stirring sand washing mechanism is arranged in the cleaning box, and a vibration structure is arranged at the bottom of the cleaning box; the top and the bottom of the right side of the cleaning box communicate with a top drainage valve and a bottom drainage valve correspondingly, and filter screens are arranged in the top drainage valve and the bottom drainage valve correspondingly. The screen frame receives sand falling from the hopper and disperses the sand to the spiral stirring blade, the spiral stirring blade generates vortex through rotation, the sand rubs and collides with one another, soil is stripped, meanwhile, water and the sand are fully mixed, the cleaning effect and efficiency are improved, fine impurities can be removed, and the requirement of high-quality 3D printing for the purity of the sand is met.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printing sand processing, and in particular to a 3D printing sand water washing and mud removal device. Background Art

[0002] During the production and use of 3D printing sand, impurities such as soil are often mixed into the sand. These impurities will seriously affect the quality and performance of 3D printing sand, and thus affect the accuracy and quality of 3D printed products.

[0003] At present, in the existing 3D printing sand processing link, the traditional mud removal method is difficult to meet the needs of large-scale production and high-quality 3D printing. The simple screening that mainly relies on can only remove larger particles of impurities, but is helpless against fine mud. Manual cleaning is not only extremely inefficient, but the mud removal effect is also greatly affected by human factors, and the quality is difficult to stabilize. At the same time, even if the existing sand cleaning equipment can clean 3D printing sand, there are still many shortcomings. Some equipment cannot accurately control the water flow and cleaning intensity, and it is easy to cause excessive scouring of 3D printing sand with extremely high requirements for particle size and shape, which will destroy the particle size and shape, and ultimately affect the accuracy and performance of 3D printed products.

[0004] Therefore, a 3D printing sand water washing and mud removal device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a 3D printing sand water washing and mud removal device, which can solve the existing 3D printing sand processing link. The traditional mud removal method is difficult to meet the needs of large-scale production and high-quality 3D printing. The simple screening that mainly relies on can only remove larger particle impurities, but is helpless against fine soil. Manual cleaning is not only extremely inefficient, but the mud removal effect is also greatly affected by human factors, and the quality is difficult to stabilize. At the same time, even if the existing sand cleaning equipment can clean 3D printing sand, it also has many shortcomings. Some equipment cannot accurately control the water flow and cleaning force, and it is easy to cause excessive scouring of 3D printing sand with extremely high requirements on particle size and shape, and the particle size and shape are destroyed, which ultimately affects the accuracy and performance of 3D printed products.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a 3D printing sand water washing and mud removal device, comprising a cleaning box, the top of the cleaning box is connected to a hopper, a rotary stirring sand washing mechanism is arranged inside the cleaning box, a vibration structure is arranged at the bottom of the cleaning box, the top and bottom of the right side of the cleaning box are respectively connected to a top drainage valve and a bottom drainage valve, and the top drainage valve and the bottom drainage valve are both provided with a filter screen inside;

[0007] The rotary stirring sand washing mechanism includes a servo motor arranged on the top of the cleaning box, the output end of the servo motor passes through the top of the cleaning box, the output end of the servo motor is fixedly connected to a shaft, the top of the outer side of the shaft is fixedly connected to a screen frame, the screen frame is located at the bottom of the hopper, the outer side of the shaft is fixedly connected to a spiral stirring blade, the spiral stirring blade is located at the bottom of the screen frame, a flushing structure is arranged inside the cleaning box, the flushing structure is located at the bottom of the outer side of the screen frame, and the flushing structure is located on the outer side of the spiral stirring blade.

[0008] Preferably, the flushing structure includes a three-way regulating valve arranged on the left side of the cleaning tank, and the right side of the three-way regulating valve passes through the left side of the cleaning tank.

[0009] Preferably, the top of the right side of the three-way regulating valve is connected to a first water guide ring, the inner side of the first water guide ring is connected to an upward inclined nozzle, the inclination angle of the upward inclined nozzle is 45 degrees, and the upward inclined nozzle is located outside the bottom of the screen frame.

[0010] Preferably, the bottom of the right side of the three-way regulating valve is connected to a second water guide ring, the interior of the second water guide ring is connected to a downward inclined nozzle, the inclination angle of the downward inclined nozzle is 45 degrees, and the downward inclined nozzle is located on the outside of the spiral stirring blade.

[0011] Preferably, the vibration structure includes fixed blocks fixedly connected to the four corners of the bottom of the cleaning box, the bottom of the fixed block is fixedly connected to a telescopic rod, a spring is provided on the outside of the telescopic rod, and the top of the spring is fixedly connected to the bottom of the fixed block.

[0012] Preferably, the spring and the bottom of the telescopic rod are fixedly connected to a base, and the bottom of the cleaning box is bolted with a vibration motor.

[0013] Preferably, the bottom of the cleaning box is connected to a discharge valve, the bottom of the discharge valve is connected to a transfer pipe, and the transfer pipe is externally connected to a vibrating screen.

[0014] Preferably, a spiral material conveying blade is fixedly connected to the bottom of the shaft, and the bottom of the spiral material conveying blade is located on the top side of the inside of the discharge valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present application sets a rotary sand washing mechanism, and the servo motor drives the shaft to make the screen frame and the spiral stirring blade rotate synchronously. The screen frame receives the sand material falling from the hopper and disperses it to the spiral stirring blade. The spiral stirring blade generates vortexes through rotation, so that the sand materials rub and collide with each other, peel off the soil, and fully mix the water and sand at the same time, thereby improving the cleaning effect and efficiency, removing fine impurities, and meeting the requirements of high-quality 3D printing for the purity of the sand materials. In this process, the flushing structure continuously sprays water, replenishes the water volume and impacts the sand materials to assist in mud removal. During the cleaning process, the soil and other impurities will gradually float on the water surface with the flow of water, and the sand materials will settle. At the same time, the top drain valve is located at the top right side of the cleaning box, and is opened to discharge the upper muddy sewage. The bottom drain valve is at the bottom right side, and its discharge opening is adjusted to discharge a small amount of the lower sewage mixture to maintain the water volume inside the cleaning box. The filter screen in the pipe can intercept the sand materials, ensure the recovery rate, and reduce the sewage treatment pressure. In addition, the spiral stirring blades make the sand materials evenly distributed, avoid local excessive scouring, protect the sand material particle size and shape, and improve the precision and quality of the printed products.

[0017] 2. The present application sets up a vibration structure. During the cleaning process, the vibration generated by the vibration structure can further loosen the soil mixed between the sand materials inside the cleaning box, making it easier for the soil to fall off the sand materials, thereby assisting the rotary sand washing mechanism to improve the cleaning effect. After the cleaning is completed, the vibration helps to discharge the sand materials quickly, preventing the sand materials from accumulating and clogging at the bottom of the box, thereby improving the sand discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of the 3D printing sand washing and mud removal device of the present invention;

[0019] Figure 2 It is a structural diagram of the rotary stirring sand washing mechanism of the present invention;

[0020] Figure 3 is a structural diagram of the shaft rod of the present invention;

[0021] Figure 4 It is a structural diagram of the flushing structure of the present invention;

[0022] Figure 5 It is a structural diagram of the vibration structure of the present invention.

[0023] In the figure, 1. cleaning box; 2. hopper; 3. rotary stirring sand washing mechanism; 31. servo motor; 32. shaft; 33. mesh frame; 34. spiral stirring blade; 35. flushing structure; 351. three-way regulating valve; 352. first water guide ring; 353. upper inclined nozzle; 354. second water guide ring; 355. lower inclined nozzle; 4. vibration structure; 41. fixed block; 42. telescopic rod; 43. spring; 44. base; 45. vibration motor; 5. discharge valve; 6. top drainage valve; 7. bottom drainage valve; 8. filter screen; 9. spiral feeding blade. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5 , the present invention provides a technical solution:

[0026] A 3D printing sand water washing and mud removal device comprises a cleaning box 1, the top of the cleaning box 1 is connected to a hopper 2, a rotary stirring sand washing mechanism 3 is arranged inside the cleaning box 1, a vibration structure 4 is arranged at the bottom of the cleaning box 1, the top and bottom of the right side of the cleaning box 1 are respectively connected to a top drainage valve 6 and a bottom drainage valve 7, and a filter screen 8 is arranged inside the top drainage valve 6 and the bottom drainage valve 7;

[0027] The rotary stirring sand washing mechanism 3 includes a servo motor 31 arranged on the top of the cleaning box 1, the output end of the servo motor 31 passes through the top of the cleaning box 1, the output end of the servo motor 31 is fixedly connected to the shaft 32, the top of the outer side of the shaft 32 is fixedly connected to the screen frame 33, the screen frame 33 is located at the bottom of the hopper 2, the outer side of the shaft 32 is fixedly connected to the spiral stirring blade 34, the spiral stirring blade 34 is located at the bottom of the screen frame 33, and the interior of the cleaning box 1 is provided with a flushing structure 35, the flushing structure 35 is located at the bottom of the outer side of the screen frame 33, and the flushing structure 35 is located on the outer side of the spiral stirring blade 34.

[0028] In this embodiment: by setting a rotary stirring sand washing mechanism 3 and a vibration structure 4, when working, the sand falls from the hopper 2 into the cleaning box 1. At the same time, the flushing structure 35 of the external water source starts to work and continuously sprays water into the cleaning box 1. The water flow not only flushes the screen frame 33 and the spiral stirring blade 34 to replenish the cleaning water, but also directly impacts the sand to help peel off the soil. Subsequently, the servo motor 31 is started, which drives the shaft 32 to rotate, so that the screen frame 33 and the spiral stirring blade 34 on the shaft 32 rotate synchronously. The screen frame 33 is located at the bottom of the hopper 2, preliminarily receives the sand, and uses centrifugal force to evenly sprinkle the sand to the spiral stirring blade 34 below. The spiral stirring blade 34 rotates at a high speed to fully stir the sand and water. The vortex generated causes the sand to rub and collide with each other, effectively peeling off the soil on the surface of the sand, allowing the water and sand to be fully mixed, significantly enhancing the cleaning effect and efficiency, deeply removing fine impurities, and meeting the strict requirements of high-quality 3D printing on the purity of the sand. During the cleaning process, since the density of the sand is greater than that of water, the sand The material gradually sinks, and impurities such as mud are suspended on the water surface. At this time, the muddy sewage is discharged through the top drainage valve 6 on the top right side of the cleaning box 1 and the bottom drainage valve 7 at the bottom. Among them, the bottom drainage valve 7 adjusts its discharge opening to discharge a small amount of lower sewage mixture to maintain the water volume inside the cleaning box 1. The filter screen 8 in the top drainage valve 6 and the bottom drainage valve 7 plays a key role in intercepting the sand material and preventing it from being lost with the water, which not only ensures the recovery rate of the sand material, but also reduces the pressure of subsequent sewage treatment. During cleaning, the vibration structure 4 is located at the bottom of the cleaning box 1, and the vibration generated makes the mud mixed between the sand materials further loose, making it easier to fall off the sand material, and assisting the rotary stirring sand washing mechanism 3 to improve the cleaning effect. After cleaning, the bottom drainage valve 7 is fully opened to discharge the residual water inside the cleaning box 1. At the same time, the vibration structure 4 also helps the sand material to be discharged smoothly, prevents the sand material from accumulating and clogging at the bottom of the box, greatly improves the sand discharge efficiency, and ensures that the cleaning work is completed efficiently and smoothly. It is explained here that a unified external controller is used for unified control during the overall control process.

[0029] Specifically, Figure 4 As shown, the flushing structure 35 includes a three-way regulating valve 351 arranged on the left side of the cleaning box 1, and the right side of the three-way regulating valve 351 passes through the left side of the cleaning box 1.

[0030] Specifically, Figure 4 As shown, the top of the right side of the three-way regulating valve 351 is connected to the first water guide ring 352, and the inner side of the first water guide ring 352 is connected to the upper inclined nozzle 353. The inclination angle of the upper inclined nozzle 353 is 45 degrees, and the upper inclined nozzle 353 is located on the outer side of the bottom of the screen frame 33.

[0031] Specifically, Figure 4As shown, the bottom of the right side of the three-way regulating valve 351 is connected to a second water guide ring 354 , and the interior of the second water guide ring 354 is connected to a downward inclined nozzle 355 . The inclination angle of the downward inclined nozzle 355 is 45 degrees, and the downward inclined nozzle 355 is located on the outside of the spiral stirring blade 34 .

[0032] In this embodiment: by setting a flushing structure 35, an external water source enters the cleaning box 1 through a three-way regulating valve 351, and a first water guide ring 352 connected to the top right side of the three-way regulating valve 351 conveys water to the upper inclined nozzle 353. Its 45-degree inclination angle enables the sprayed water to accurately impact the sand material on the outside of the bottom of the screen frame 33. On the one hand, this supplements the cleaning water and maintains sufficient water during the cleaning process. On the other hand, the high-speed water flow impacts the sand material, directly assists in stripping the soil on the surface of the sand material, and cooperates with the stirring of the spiral stirring blade 34 to enhance the cleaning effect. At the same time, the second water guide ring 354 and the downward inclined nozzle 355 connected to the bottom right side of the three-way regulating valve 351 can flush the sand material on the outside of the spiral stirring blade 34. The downward inclined nozzle 355 is also designed with a 45-degree inclination to ensure that the water flow effectively flushes the sand material, further strips off the residual soil, and allows the sand material to be cleaned more thoroughly, effectively improving the cleaning quality of 3D printing sand.

[0033] Specifically, Figure 5 As shown, the vibration structure 4 includes a fixed block 41 fixedly connected to the four corners of the bottom of the cleaning box 1, a telescopic rod 42 is fixedly connected to the bottom of the fixed block 41, a spring 43 is arranged on the outside of the telescopic rod 42, and the top of the spring 43 is fixedly connected to the bottom of the fixed block 41.

[0034] Specifically, Figure 5 As shown, the spring 43 and the bottom of the telescopic rod 42 are fixedly connected to a base 44, and a vibration motor 45 is bolted to the bottom of the cleaning box 1.

[0035] In this embodiment: by setting a vibration structure 4, the fixed blocks 41 at the four corners of the bottom of the cleaning box 1 are connected to the telescopic rod 42 and the spring 43, and the bottom is also bolted with a vibration motor 45. When the vibration motor 45 is started, vibration will be generated, and the vibration will be transmitted to the telescopic rod 42 and the spring 43 through the fixed block 41. The spring 43 plays a role in buffering and adjusting the vibration amplitude, so that the vibration can act on the cleaning box 1 stably and evenly. During the cleaning process, this vibration further loosens the soil mixed between the sand materials in the cleaning box 1, making it easier for the soil to fall off the sand materials, thereby helping to improve the cleaning effect. After cleaning is completed, the vibration can cause the sand materials to concentrate at the bottom of the cleaning box 1 for easy discharge, effectively preventing the sand materials from accumulating and clogging at the bottom of the box, greatly improving the sand discharge efficiency, and ensuring the smooth progress of the entire cleaning process.

[0036] Specifically, Figure 3As shown, the bottom of the cleaning box 1 is connected to a discharge valve 5, the bottom of the discharge valve 5 is connected to a transfer pipe, and the transfer pipe is externally connected to a vibrating screen.

[0037] Specifically, Figure 3 As shown, a spiral material conveying blade 9 is fixedly connected to the bottom of the shaft 32 , and the bottom of the spiral material conveying blade 9 is located at the top side inside the discharge valve 5 .

[0038] In this embodiment: by setting the discharge valve 5 and the spiral feeding blade 9, after the cleaning is completed, the discharge valve 5 is opened, and the spiral feeding blade 9 rotates with the shaft 32. The spiral feeding blade 9 is located on the top side of the discharge valve 5. When rotating, the sand at the bottom of the cleaning box 1 can be pushed to the discharge valve 5 in an orderly manner, thereby accelerating the discharge speed of the sand and avoiding the accumulation of sand at the discharge valve 5. The discharged sand enters the external vibrating screen through the transfer pipe. The vibrating screen further screens and separates the residual impurities and moisture to ensure the purity of the sand, further improve the quality of the 3D printing sand, and provide higher quality raw materials for the subsequent 3D printing links.

[0039] Working principle: During the use of the 3D printing sand and water washing and mud removal device, the sand material first falls from the hopper 2 into the cleaning box 1. At this time, the external water source enters the cleaning box 1 through the three-way regulating valve 351. The first water guide ring 352 connected to the top right side of the three-way regulating valve 351 conveys water to the 45-degree inclined upward nozzle 353. The water sprayed by the upward inclined nozzle 353 accurately impacts the sand material on the outside of the bottom of the screen frame 33, replenishing the cleaning water while helping to peel off the mud on the surface of the sand material. The second water guide ring 354 and the downward inclined nozzle 355 connected to the bottom right side of the three-way regulating valve 351 impact the outer surface of the spiral stirring blade 34. The sand material on the side is washed to further peel off the residual soil. At this time, the servo motor 31 is started to drive the shaft 32 to rotate, so that the screen frame 33 and the spiral stirring blade 34 on the shaft 32 rotate synchronously. The screen frame 33 receives the sand material and uses centrifugal force to evenly sprinkle it onto the spiral stirring blade 34. The spiral stirring blade 34 rotates at a high speed to stir the sand material and water. The eddy current generated causes the sand material to rub and collide with each other, peel off the soil, and fully mix the water and sand, thereby enhancing the cleaning effect and efficiency, removing fine impurities, and meeting the requirements of 3D printing for the purity of the sand material. During the cleaning process, since the density of the sand material is greater than that of water, the sand material gradually The mud and other impurities sink, and the mud and other impurities are suspended on the water surface. The muddy sewage is discharged through the top drainage valve 6 on the top right side of the cleaning box 1 and the bottom drainage valve 7 at the bottom. Among them, the bottom drainage valve 7 adjusts its discharge opening to discharge a small amount of the lower sewage mixture to maintain the water volume inside the cleaning box 1. The filter screen 8 in the top drainage valve 6 and the bottom drainage valve 7 intercepts the sand to prevent its loss, thereby ensuring the sand recovery rate and reducing the sewage treatment pressure. At the same time, the vibration motor 45 located at the bottom of the cleaning box 1 starts to generate vibration, which is transmitted to the telescopic rod 42 and the spring 43 through the fixed block 41. The spring 43 adjusts the vibration amplitude to make the vibration act stably and evenly on the The cleaning box 1 vibrates to loosen the soil mixed between the sand materials, which helps to improve the cleaning effect. After cleaning, the bottom drain valve 7 is fully opened to discharge the residual water inside the cleaning box 1, and then the discharge valve 5 is opened. The spiral feeding blades 9 at the bottom of the shaft 32 rotate with the shaft 32 to push the sand materials at the bottom of the cleaning box 1 to the discharge valve 5, thereby accelerating the discharge speed and avoiding the accumulation of sand materials. The discharged sand materials enter the external vibrating screen through the transfer pipe. The vibrating screen further screens and separates the residual impurities and moisture to improve the quality of the sand materials. The entire device realizes the efficient and high-quality water washing and mud removal process of 3D printing sand through the coordinated work of various structures.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 3D printing sand washing and mud removal device, comprising a washing box (1), characterized in that: The top of the cleaning box (1) is connected to a hopper (2), a rotary stirring sand washing mechanism (3) is arranged inside the cleaning box (1), a vibration structure (4) is arranged at the bottom of the cleaning box (1), the top and bottom of the right side of the cleaning box (1) are respectively connected to a top drainage valve (6) and a bottom drainage valve (7), and a filter screen (8) is arranged inside the top drainage valve (6) and the bottom drainage valve (7); The rotary stirring sand washing mechanism (3) comprises a servo motor (31) arranged at the top of the cleaning box (1), the output end of the servo motor (31) passes through the top of the cleaning box (1), the output end of the servo motor (31) is fixedly connected to a shaft (32), the top of the outer side of the shaft (32) is fixedly connected to a screen frame (33), the screen frame (33) is located at the bottom of the hopper (2), the outer side of the shaft (32) is fixedly connected to a spiral stirring blade (34), the spiral stirring blade (34) is located at the bottom of the screen frame (33), and a flushing structure (35) is arranged inside the cleaning box (1), the flushing structure (35) is located at the bottom of the outer side of the screen frame (33), and the flushing structure (35) is located on the outer side of the spiral stirring blade (34).

2. A 3D printing sand washing and mud removal device according to claim 1, characterized in that: The flushing structure (35) comprises a three-way regulating valve (351) arranged on the left side of the cleaning box (1), and the right side of the three-way regulating valve (351) passes through the left side of the cleaning box (1).

3. A 3D printing sand washing and mud removal device according to claim 2, characterized in that: The top of the right side of the three-way regulating valve (351) is connected to a first water guide ring (352), and the inner side of the first water guide ring (352) is connected to an upward inclined nozzle (353). The inclination angle of the upward inclined nozzle (353) is 45 degrees, and the upward inclined nozzle (353) is located on the outer side of the bottom of the screen frame (33).

4. A 3D printing sand washing and mud removal device according to claim 3, characterized in that: The bottom of the right side of the three-way regulating valve (351) is connected to a second water guide ring (354), and the interior of the second water guide ring (354) is connected to a downward inclined nozzle (355). The inclination angle of the downward inclined nozzle (355) is 45 degrees, and the downward inclined nozzle (355) is located on the outside of the spiral stirring blade (34).

5. A 3D printing sand washing and mud removal device according to claim 1, characterized in that: The vibration structure (4) comprises a fixed block (41) fixedly connected to the four corners of the bottom of the cleaning box (1); a telescopic rod (42) is fixedly connected to the bottom of the fixed block (41); a spring (43) is arranged on the outside of the telescopic rod (42); and the top of the spring (43) is fixedly connected to the bottom of the fixed block (41).

6. A 3D printing sand washing and mud removal device according to claim 5, characterized in that: The spring (43) and the bottom of the telescopic rod (42) are fixedly connected to a base (44), and the bottom of the cleaning box (1) is bolted to a vibration motor (45).

7. A 3D printing sand washing and mud removal device according to claim 1, characterized in that: The bottom of the cleaning box (1) is connected to a discharge valve (5), the bottom of the discharge valve (5) is connected to a transfer pipe, and the transfer pipe is externally connected to a vibrating screen.

8. A 3D printing sand washing and mud removal device according to claim 7, characterized in that: The bottom of the shaft (32) is fixedly connected with a spiral material conveying blade (9), and the bottom of the spiral material conveying blade (9) is located on the top side inside the discharge valve (5).

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