Foundry sand vibration screening machine
By designing a vibrating screening machine for foundry sand, a servo motor is used to drive the eccentric shaft to vibrate and an anti-clogging device is used to remove wet material blockage, thus solving the problem of damp sand clogging the holes and achieving a highly efficient screening effect.
Patent Information
- Application Number
- CN202520369482.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-05
AI Technical Summary
During the screening process of foundry sand, the phenomenon of wet material clogging the holes caused by damp sand affects the normal screening effect and efficiency of the screening machine.
A vibrating screening machine for foundry sand was designed, comprising a machine body, a servo motor, an eccentric shaft, and a multi-layer screen. The servo motor drives the eccentric shaft to generate vibration, which, combined with an anti-clogging device and a scraping device, prevents wet material from clogging the screen holes, and removes blockages through an elastic plastic mesh and inserts.
This effectively prevents wet material from clogging the top screen mesh, improving the screening effect and efficiency of the screening machine and ensuring that sand and gravel are separated into layers according to size.
Smart Images
Figure CN223902866U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vibrating screening machine technical field especially relates to foundry sand vibrating screening machine. BACKGROUND
[0002] Foundry sand is the key material for manufacturing sand mould and sand core in sand mould casting, and its performance and composition directly affect the quality and production efficiency of castings, the foundry sand is mixed by new sand, old sand, binder, additives and water in a certain proportion, and the new sand needs to be screened by a vibrating screening machine to remove impurities.
[0003] When the vibrating screening machine is used to screen the new sand, sand of different sizes will be layered on the screening machine, if the new sand is wet sand, the moisture and the ash in the sand are combined and easily attached to the mesh of the top layer of screen mesh during screening, which causes the wet material to block the hole phenomenon, affects the normal screening of the screening machine, and causes the screening effect and efficiency to be reduced. UTILITY MODEL CONTENT
[0004] The utility model discloses a foundry sand vibrating screening machine which solves the problems in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the foundry sand vibrating screening machine comprises a machine body, two groups of damping legs are arranged on the two sides of the machine body, a servo motor is arranged on one side of the machine body, an eccentric shaft is arranged on the output end of the servo motor, the eccentric shaft is located in the interior of the machine body, three screen meshes are arranged in the interior of the machine body, the three screen meshes are located at the upper, middle and lower positions of the machine body respectively, and the mesh size of the outer surface of the three screen meshes decreases from top to bottom.
[0006] The above-mentioned components achieve the following effects: when the vibrating screening machine is used, the servo motor on one side of the machine body drives the eccentric shaft in the interior of the machine body to rotate, so that the centrifugal force of the machine body is generated to vibrate on the outer surface of the damping leg, then the new sand is added to the top layer of screen mesh in the interior of the machine body, the sand stones smaller than the aperture of the top layer of screen mesh are dropped to the second layer of screen mesh through the vibration of the machine body, the sand stones smaller than the second layer of screen mesh are dropped to the bottom layer of screen mesh, and the sand stones move downward on the surface of each screen mesh and are output.
[0007] Preferably, the inside of the machine body is provided with three sets of anti-blocking devices between the top layer screen and the second layer screen, the anti-blocking device comprises a frame rod, the frame rod is used to install the rotating plate and the elastic plastic net below the top layer screen, both ends of the frame rod are fixedly connected with the inner walls of the machine body, one side of the frame rod is rotatably connected with a rotating plate, the inner wall of the rotating plate is slidably connected with a slide rod, one end of the slide rod is provided with a plurality of springs, both ends of the springs are fixedly connected with one end of the slide rod and one side of the inner wall of the rotating plate, the side of the two slide rods close to each other is fixedly connected with an elastic plastic net, the size of the mesh on the surface of the elastic plastic net is the same as that of the top layer screen, a plurality of plug blocks are fixedly connected to the surface of the elastic plastic net, the plug blocks are used to enter the inside of the top layer screen to remove the wet material inside the holes of the top layer screen, and the bottom end of the plug block is fixedly connected with the surface of the plastic elastic net.
[0008] The above component achieves the effect that: by arranging the plug block, when the machine body drives the screen to vibrate during the operation of the vibrating screen, the elastic plastic net between the two frame rods will also be affected by the vibration, causing the elastic plastic net to shake up and down and stretch and contract, at the same time, the rotating plate on one side of the two frame rods will rotate on one side of the frame rod, the slide rod will slide outwards in the inner wall of the rotating plate and stretch or contract the spring, the elastic plastic net will shake the surface upwards, the plug block will be inserted into the hole inside the surface of the top layer screen, the wet material attached to the inside of the hole of the top layer screen will be pushed out by the plug block, so as to avoid the wet material adhering to the inside of the hole of the top layer screen as much as possible, and the sand and stone passing through the top layer screen will enter the second layer screen through the holes on the surface of the plastic elastic net.
[0009] Preferably, a plurality of round rods are fixedly connected to one side of the slide rod, and the round rods slide in the inner wall of the rotating plate.
[0010] The above component achieves the effect that: when the slide rod slides in the inner wall of the rotating plate, the round rods will slide in the inner wall of the rotating plate, further limiting the angle between the slide rod and the rotating plate, so as to avoid the angle of the slide rod from being deviated as much as possible.
[0011] Preferably, the diameter of the round rod is slightly smaller than the inner diameter of the spring, and the round rod is located inside the spring.
[0012] The above component achieves the effect that: when the slide rod moves to cause the spring to deform, the spring will move outside the round rod, the inside shape of the spring can be reinforced by the round rod, so as to avoid the spring from being twisted horizontally and affecting the normal use as much as possible.
[0013] Preferably, a plurality of stop blocks are fixedly connected to one side of the frame rod, and the two stop blocks are located on the upper and lower sides of the rotating plate.
[0014] The effect achieved by the above components is that the rotation angle of the rotating plate on one side of the frame rod and the shaking amplitude of the elastic plastic net can be limited by the stopper, and the shaking amplitude of the elastic plastic net is as large as possible to avoid the top layer of the screen surface from being hit by the sand and stone raw materials.
[0015] Preferably, the top end of the machine body is provided with a scraping device, the scraping device comprises a sliding rod, one side of the sliding rod is fixedly connected with a scraper, the top end of the machine body is provided with a sliding groove, both ends of the sliding rod slide on the inner wall of the sliding groove, both ends of the sliding rod are rotationally connected with rotating wheels, the rotating wheels move on the outer surface of the machine body to limit the angle between the sliding rod and the machine body, and one side of the sliding rod is rotationally connected with a pull rod.
[0016] The effect achieved by the above components is that after the vibrating screen is used, the pull rod can be pulled to control the sliding of both ends of the sliding rod at the sliding groove on the outer surface of the machine body, and the rotating wheels at both ends of the sliding rod move on the surface of the machine body, the wet material remaining on the top layer of the screen surface is scraped off by the scraper, and the wet material remaining on the top layer of the screen surface is as much as possible to improve the use effect of the vibrating screen.
[0017] Preferably, one side of the scraper is fixedly connected with an auxiliary rod, the outer surface of the auxiliary rod is conical, and the end, away from the scraper, of the auxiliary rod is narrow.
[0018] The effect achieved by the above components is that the conical auxiliary rod can improve the cleaning effect of the scraper on the top layer of the screen surface when the scraper moves on the top layer of the screen surface.
[0019] Preferably, the bottom end of the pull rod is fixedly connected with a cylinder, and the cylinder is made of rubber.
[0020] The effect achieved by the above components is that the rubber cylinder can be held on the outer surface to more conveniently pull the pull rod to control the movement of the sliding rod and not easy to slip.
[0021] Compared with the prior art, the advantages and positive effects of the utility model lie in that:
[0022] In the utility model, the anti-blocking device is arranged, the elastic plastic net is arranged below the top layer of the screen, the elastic plastic net is also vibrated when the machine body drives the screen to vibrate, the wet material adhered to the inside of the hole of the top layer of the screen is pushed out by the elastic plastic net, and the wet material is as much as possible to avoid adhering to the inside of the hole of the top layer of the screen to cause the top layer of the screen to be blocked. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0024] Figure 2This is a three-dimensional structural diagram of the body of this utility model;
[0025] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the elastic plastic mesh portion of this utility model;
[0026] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the elastic plastic mesh portion of this utility model;
[0027] Figure 5 This is a three-dimensional structural diagram of the scraper part of this utility model.
[0028] Legend: 1. Machine body; 2. Anti-blocking device; 3. Scraping device; 4. Servo motor; 5. Shock-absorbing support leg; 6. Screen; 21. Frame rod; 22. Rotating plate; 23. Slide rod; 24. Elastic plastic mesh; 25. Insert block; 26. Spring; 27. Round rod; 28. Stop block; 31. Slide groove; 32. Sliding rod; 33. Scraper; 34. Rotary wheel; 35. Pull rod; 36. Cylinder; 37. Auxiliary rod. Detailed Implementation
[0029] Example 1, such as Figures 1-2 As shown, the casting sand vibrating screener includes a body 1. Two sets of shock-absorbing legs 5 are respectively arranged on both sides of the body 1. A servo motor 4 is arranged on one side of the body 1. An eccentric shaft is arranged at the output end of the servo motor 4. The eccentric shaft is located inside the body 1. Three screens 6 are arranged inside the body 1. The three screens 6 are located at the top, middle and bottom positions of the body 1, respectively. The mesh size of the three screens 6 is from large to small from top to bottom. When the vibrating screener is used, the servo motor 4 on one side of the body 1 drives the eccentric shaft inside the body 1 to rotate, so that the body 1 generates centrifugal force and vibrates on the outer surface of the shock-absorbing legs 5. Then, new sand is added to the top screen 6 inside the body 1. The vibration of the screen 6 driven by the body 1 causes sand and gravel smaller than the mesh size of the top screen 6 to fall to the second screen 6, and sand and gravel smaller than the second screen 6 to fall to the bottom screen 6. At the same time, the sand and gravel will move downward on the surface of each screen 6 and be output.
[0030] Reference Figures 1-4As shown, in the embodiment: the inside of the body 1 is provided with three groups of anti-blocking devices 2, which are located between the top layer screen 6 and the second layer screen 6, and the anti-blocking device 2 comprises a frame rod 21 for installing a rotating plate 22 and an elastic plastic net 24 below the top layer screen 6, both ends of the frame rod 21 are fixedly connected with the inner walls of the body 1, one side of the frame rod 21 is rotatably connected with the rotating plate 22, the inner wall of the rotating plate 22 is slidably connected with a slide rod 23, one end of the slide rod 23 is provided with a plurality of springs 26, both ends of the spring 26 are fixedly connected with one end of the slide rod 23 and one side of the inner wall of the rotating plate 22, and the side of the two slide rods 23 close to each other is fixedly connected with the elastic plastic net 24, the size of the mesh on the surface of the elastic plastic net 24 is the same as that of the top layer screen 6, and a plurality of plug blocks 25 are fixedly connected to the surface of the elastic plastic net 24, the plug blocks 25 are used to enter the inside of the top layer screen 6 to remove the wet material inside the holes of the top layer screen 6, and the bottom end of the plug block 25 is fixedly connected with the surface of the plastic elastic net. By arranging the plug block 25, when the body 1 drives the screen 6 to vibrate during the operation of the vibrating screen machine, the elastic plastic net 24 between the two frame rods 21 will also be affected by the vibration, causing the elastic plastic net 24 to shake up and down and stretch and contract, and at the same time, the rotating plate 22 on one side of the two frame rods 21 will rotate on one side of the frame rod 21, and the slide rod 23 will slide outward in the inner wall of the rotating plate 22 and stretch the spring 26 or the spring 26 will contract to pull the slide rod 23 to slide inward. When the shaking surface of the elastic plastic net 24 protrudes upward, the plug block 25 will be inserted into the hole on the surface of the top layer screen 6, and the plug block 25 will push out the wet material attached to the inside of the hole of the top layer screen 6, so as to avoid the wet material adhering to the inside of the hole of the top layer screen 6 as much as possible to cause the top layer screen 6 to be blocked, and the sand and stones passing through the top layer screen 6 will enter the second layer screen 6 through the holes on the surface of the plastic elastic net.
[0031] Referring to Figures 2-4 As shown, in the embodiment: one side of the slide rod 23 is fixedly connected with a plurality of round rods 27, and the round rods 27 slide in the inner wall of the rotating plate 22. When the slide rod 23 slides in the inner wall of the rotating plate 22, the round rods 27 will slide in the inner wall of the rotating plate 22, further limiting the angle between the slide rod 23 and the rotating plate 22, so as to avoid the angle of the slide rod 23 from being skewed as much as possible when the slide rod 23 slides. The diameter of the round rod 27 is slightly smaller than the inner diameter of the spring 26, and the round rod 27 is located in the inside of the spring 26. When the slide rod 23 moves to cause the spring 26 to deform, the spring 26 will move outside the round rod 27. The round rod 27 can reinforce the internal shape of the spring 26, so as to avoid the spring 26 from being twisted horizontally to affect the normal use as much as possible.
[0032] Referring to Figures 2-4As shown in FIG. 1 and FIG. 2, in the embodiment: one side of the frame rod 21 is fixedly connected with a plurality of stop blocks 28, two stop blocks 28 are located on the upper and lower sides of the rotating plate 22 respectively, by arranging the stop blocks 28, the rotating angle of the rotating plate 22 on one side of the frame rod 21 and the shaking amplitude of the elastic plastic net 24 can be limited, and the shaking amplitude of the elastic plastic net 24 is as large as possible to avoid the top layer of the screen 6 surface sandstone raw materials to fly.
[0033] Referring to Figure 1 , Figure 2 and Figure 5 As shown in FIG. 1 and FIG. 2, in the embodiment: the top end of the machine body 1 is provided with a scraping device 3, the scraping device 3 includes a sliding rod 32, one side of the sliding rod 32 is fixedly connected with a scraper 33, the top end of the machine body 1 is provided with a sliding groove 31, both ends of the sliding rod 32 slide in the inner wall of the sliding groove 31, both ends of the sliding rod 32 are rotatably connected with rotating wheels 34, the rotating wheels 34 move on the outer surface of the machine body 1 for limiting the angle between the sliding rod 32 and the machine body 1, one side of the sliding rod 32 is rotatably connected with a pull rod 35, after the use of the vibrating screening machine, the pull rod 35 can be pulled to control the sliding of both ends of the sliding rod 32 in the sliding groove 31 on the outer surface of the machine body 1, at the same time, the rotating wheels 34 at both ends of the sliding rod 32 will move on the surface of the machine body 1, the wet material remaining on the surface of the top layer of the screen 6 is scraped off by the scraper 33, as much as possible to avoid part of the wet material remaining on the surface of the top layer of the screen 6, and improve the use effect of the vibrating screening machine.
[0034] Referring to Figure 2 and Figure 5 As shown in FIG. 1 and FIG. 2, in the embodiment: one side of the scraper 33 is fixedly connected with an auxiliary rod 37, the outer surface of the auxiliary rod 37 is tapered, the end of the auxiliary rod 37 away from the scraper 33 is narrow, by arranging the tapered auxiliary rod 37, the cleaning effect of the scraper 33 on the surface of the top layer of the screen 6 can be improved when the scraper 33 moves on the surface of the top layer of the screen 6, the bottom end of the pull rod 35 is fixedly connected with a cylinder 36, the cylinder 36 is made of rubber material, holding the outer surface of the rubber cylinder 36 can more conveniently pull the pull rod 35 to control the movement of the sliding rod 32 and not easy to slip.
[0035] Working principle: when using the vibrating screening machine, the servo motor 4 on one side of the operation body 1 drives the eccentric shaft inside the body 1 to rotate, so that the body 1 generates centrifugal force to vibrate the outer surface of the shock leg 5. Then, the new sand is added to the top layer of the screen 6 inside the body 1, and the sand smaller than the aperture of the top layer of the screen 6 falls to the second layer of the screen 6, and the sand smaller than the second layer of the screen 6 falls to the bottom layer of the screen 6. At the same time, the sand moves downward on the surface of each screen 6 and is output. When the body 1 drives the screen 6 to vibrate, the elastic plastic net 24 between the two frame rods 21 will also be affected by the vibration, so that the elastic plastic net 24 shakes up and down and stretches and contracts. At the same time, the rotating plate 22 on one side of the two frame rods 21 will rotate on one side of the frame rod 21, the slide rod 23 will slide outward in the inner wall of the rotating plate 22 and stretch the spring 26 or the spring 26 will contract to slide the slide rod 23 inward. When the shaking surface of the elastic plastic net 24 protrudes upward, the insert block 25 will be inserted into the hole inside the surface of the top layer of the screen 6. Through the insert block 25, the wet material attached to the hole inside the top layer of the screen 6 is pushed out, so as to avoid the wet material adhering to the hole inside the top layer of the screen 6 as much as possible. The sand passing through the top layer of the screen 6 will enter the second layer of the screen 6 through the hole in the surface of the plastic elastic net. After the vibrating screening machine is used, the slide rod 32 is pulled to control the both ends of the slide rod 32 to slide in the sliding groove 31 on the surface of the body 1. At the same time, the rotating wheel 34 at both ends of the slide rod 32 moves on the surface of the body 1, and the wet material remaining on the surface of the top layer of the screen 6 is scraped off by the scraper 33.
[0036] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A foundry sand vibrating screening machine comprising a machine body (1), characterized in that: Two groups of damping legs (5) are arranged on the two sides of the body (1), a servo motor (4) is arranged on one side of the body (1), an eccentric shaft is arranged at the output end of the servo motor (4), the eccentric shaft is located in the body (1), three screens (6) are arranged in the body (1), the three screens (6) are located at the upper, middle and lower positions of the body (1), and the mesh sizes of the outer surfaces of the three screens (6) are gradually reduced from top to bottom.
2. The foundry sand vibrating screening machine of claim 1, wherein: Three groups of anti-blocking devices (2) are arranged in the body (1), the anti-blocking devices (2) are located between the top screen (6) and the second screen (6), the anti-blocking device (2) comprises a frame rod (21), the frame rod (21) is used for mounting a rotating plate (22) and an elastic plastic screen (24) below the top screen (6), the two ends of the frame rod (21) are fixedly connected with the inner walls of the body (1), one side of the frame rod (21) is rotatably connected with the rotating plate (22), the inner wall of the rotating plate (22) is slidably connected with a sliding rod (23), one end of the sliding rod (23) is provided with a plurality of springs (26), the two ends of the spring (26) are fixedly connected with one end of the sliding rod (23) and one side of the inner wall of the rotating plate (22), and the two sliding rods (23) are fixedly connected with the elastic plastic screen (24) on the sides close to each other, the mesh size of the surface of the elastic plastic screen (24) is the same as that of the surface of the top screen (6), a plurality of plug blocks (25) are fixedly arranged on the surface of the elastic plastic screen (24), the plug blocks (25) are used for entering the inside of the top screen (6) to remove the wet materials in the holes of the top screen (6), and the bottom ends of the plug blocks (25) are fixedly connected with the surface of the plastic elastic screen.
3. The foundry sand vibrating screening machine of claim 2, wherein: A plurality of round rods (27) are fixedly connected with one side of the sliding rod (23), and the round rods (27) slide on the inner wall of the rotating plate (22).
4. The foundry sand vibrating screening machine of claim 3, wherein: The diameter of the round rod (27) is slightly smaller than the inner diameter of the spring (26), and the round rod (27) is located in the spring (26).
5. The foundry sand vibrating screening machine of claim 4, wherein: A plurality of stop blocks (28) are fixedly connected with one side of the frame rod (21), and the two stop blocks (28) are located on the upper and lower sides of the rotating plate (22).
6. The foundry sand vibrating screening machine of claim 5, wherein: A scraping device (3) is arranged at the top end of the body (1), the scraping device (3) comprises a sliding rod (32), one side of the sliding rod (32) is fixedly connected with a scraper (33), a sliding groove (31) is formed in the top end of the body (1), the two ends of the sliding rod (32) slide on the inner wall of the sliding groove (31), the two ends of the sliding rod (32) are rotatably connected with rotating wheels (34), the rotating wheels (34) move on the outer surface of the body (1) and are used for limiting the angle between the sliding rod (32) and the body (1), and one side of the sliding rod (32) is rotatably connected with a pull rod (35).
7. The foundry sand vibrating screening machine of claim 6, wherein: One side of the scraper (33) is fixedly connected with an auxiliary rod (37), the outer surface of the auxiliary rod (37) is conical, and the end, away from the scraper (33), of the auxiliary rod (37) is a narrow side.
8. The foundry sand vibrating screening machine of claim 6, wherein: The bottom end of the pull rod (35) is fixedly connected with a cylinder (36) made of rubber material.