A vibrating screen for coated sand

Abstract

The utility model relates to the technical field of coated sand production equipment discloses a vibrating screen for coated sand, including bottom frame, screen cloth, sieve bed, hopper half magnetic cylinder, eccentric wheel, the outside fixed connection of sieve bed has first motor, the outside fixed connection of bottom frame has second motor, the outside of support leg is provided with collecting groove. The utility model has the following advantages and effect: the high -speed rotation of half magnetic cylinder is in the inside of box, and the bottom of sieve bed is continuously hit under the action of second motor drive eccentric wheel, makes sieve bed and screen cloth produce vibration, after mixed coated sand material falls in the hopper, the magnetic particle in mixed coated sand material is adsorbed to the surface of half magnetic cylinder, and the non -metallic particle in mixed coated sand material is not affected by the magnetic attraction of half magnetic cylinder, and after sliding off the surface of half magnetic cylinder, it falls to the upper surface of vibrating screen through the blanking opening, and then is screened through the action of screen cloth, has the effect that the screening effect of coated sand is good.

Description

Technical Field

[0001] This utility model relates to the technical field of coated sand production equipment, and in particular to a vibrating screen for coated sand. Background Technology

[0002] Coated sand is a special casting material made by mixing quartz sand with thermosetting resin and heating it to form a uniform resin film on its surface. Coated sand also has wide applications in the automotive industry, aerospace and energy equipment fields.

[0003] In the prior art, Chinese Patent Publication No. CN210935876U discloses a novel vibrating screen for coated sand, which not only realizes a quantitative feeding method for the vibrating screen body, improving the screening efficiency of the vibrating screen body, but also greatly facilitates the vibrating screening and collection process of coated sand. It includes a vibrating screen body with an inclined structure, a feed inlet at the front end of the vibrating screen body, and four discharge outlets corresponding to the vibrating screen mesh at the rear end of the vibrating screen body. A coated sand feeding device is connected to the feed inlet for quantitative vibrating screening of the coated sand, and a coated sand material collection device is provided at the discharge outlets for collecting the screened coated sand material. A support frame is provided at the lower part of the vibrating screen body, and the support frame is connected to the vibrating screen body through a buffer vibration device. This novel structural design of the coated sand vibrating screen is highly practical, while improving the structural vibration performance of the vibrating screen body and reducing the impact of vibration noise on worker production.

[0004] In actual production and use, although this type of vibrating screen for coated sand can also screen the mixture of coated sand, it does not have a magnetic separation device. This may result in the presence of iron powder in the mixture during screening, which affects the quality of the screened coated sand and leads to poor performance of the device. Therefore, it needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a vibrating screen for coated sand, which has a good screening effect on coated sand.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A vibrating screen for coated sand includes a bottom frame, a screen mesh, a screen bed, a hopper, a semi-magnetic roller, and an eccentric wheel. A box is fixedly connected to the upper surface of the screen bed. A rotating hole is opened inside the box. A first motor is fixedly connected to the outside of the screen bed. The output end of the first motor passes through the inside of the rotating hole and is fixedly connected to the semi-magnetic roller. The hopper passes through the inside of the box. A discharge port is opened inside the box. A vibration spring is fixedly connected to the bottom of the screen bed. The bottom of the vibration spring is fixedly connected to the bottom frame. A second motor is fixedly connected to the outside of the bottom frame. The output end of the second motor is fixedly connected to the eccentric wheel. A closed cover is fixedly connected to the upper surface of the screen bed. A first discharge channel is fixedly connected to the outside of the screen mesh. A second discharge channel is fixedly connected to the outside of the screen bed. A support leg is fixedly connected to the bottom of the bottom frame. A collection groove is provided on the outside of the support leg. A concave hole is opened inside the box. An inclined groove is fixedly connected to the outside of the box.

[0007] By adopting the above technical solution, the worker simultaneously starts the first motor and the second motor. The output end of the first motor drives the semi-magnetic drum to rotate at high speed inside the housing, while the output end of the second motor drives the eccentric wheel to rotate at high speed at the bottom of the screen bed. The high-speed rotating eccentric wheel continuously impacts the bottom of the screen bed, causing the screen bed to vibrate. Through the vibration spring, the screen bed vibrates and shakes on the bottom frame, which in turn causes the screen to vibrate. The worker pours the mixed coated sand material into the hopper. When the mixed coated sand material falls, it first contacts the rotating semi-magnetic drum. The metallic magnetic particles and magnetic particles in the mixed coated sand material are attracted to the surface of the semi-magnetic drum. The non-metallic particles in the mixed coated sand material are not affected by the magnetic attraction of the semi-magnetic drum and slide off the surface of the semi-magnetic drum, falling through the discharge port onto the vibrating screen. On the upper surface of the screen, finer coated sand passes through the screen and falls onto the upper surface of the screen bed. With the vibration of the screen bed, it finally flows into the collection tank through the second discharge channel for collection. Larger particles in the mixed coated sand material are conveyed to the first discharge channel and discharged as the screen vibrates on the upper surface of the screen. Metal and magnetic particles adsorbed on the surface of the semi-magnetic drum are affected by gravity when the semi-magnetic drum rotates at high speed to the other half of the non-magnetic area of ​​the semi-magnetic drum. After falling off, they fall into the inclined groove outside the concave hole and flow out through the inclined groove. Through the above operations, metal particles in the coated sand are removed before screening, improving the quality of the coated sand after screening and achieving a better screening effect for the coated sand.

[0008] A further feature of this invention is that the hopper is fixedly connected to a ramp surface, and the number of ramp surfaces is four.

[0009] By adopting the above technical solution, the four sloping surfaces facilitate the rapid drop of the mixed material from the inside of the hopper into the inside of the box.

[0010] A further feature of this invention is that the external part of the semi-magnetic roller is fixedly connected with wide blades, and the spacing between each pair of wide blades is equal.

[0011] By adopting the above technical solution, when the semi-magnetic roller rotates, it drives the wide blades to rotate together. Through the blocking effect of the wide blades, the contact time between the mixed material and the semi-magnetic roller is increased, which makes it easier for the semi-magnetic roller to fully magnetically attract the metal magnetic particles and magnetic particles in the contacted mixed material.

[0012] A further feature of this invention is that two arc-shaped guide plates are fixedly connected inside the housing.

[0013] By adopting the above technical solution, after the mixed material is poured into the inside of the box, it falls onto the upper surface of the arc guide plate after passing through the surface of the rotating semi-magnetic roller. The arc guide plate provides a trajectory for the falling non-magnetic material.

[0014] A further feature of this invention is that two round rubber heads are fixedly connected to the outside of the eccentric wheel.

[0015] By adopting the above technical solution, the round rubber head plays a buffering role, preventing the eccentric wheel from damaging the bottom of the screen bed.

[0016] A further feature of this invention is that a spring is provided inside the sieve bed, one end of the spring is fixedly connected to the sieve mesh, and the other end of the spring is fixedly connected to the inner wall of the sieve bed.

[0017] By adopting the above technical solution, the shaking generated during screen vibration is amplified by the action of the spring, thereby improving the efficiency of vibratory screening of coated sand.

[0018] A further feature of this invention is that an angle iron frame is fixedly connected to the outside of the second motor, and the bottom of the angle iron frame is fixedly connected to the support leg.

[0019] By adopting the above technical solution, the angle iron frame serves to fasten and support the second motor.

[0020] A further feature of this invention is that four circular pads are fixedly connected to the bottom of the support leg.

[0021] By adopting the above technical solution, the four circular pads reduce the vibration of the outriggers on the ground and provide stable support for the outriggers.

[0022] A further feature of this invention is that: a smoke hole is provided inside the enclosed cover; a vacuum cleaner is fixedly connected inside the enclosed cover; a pipe is provided outside the sieve bed; a collection bucket is provided on one side of the outer side of the box; one end of the pipe passes through the inside of the enclosed cover and is fixedly connected to the output end of the vacuum cleaner; and the other end of the pipe passes through the inside of the collection bucket.

[0023] By adopting the above technical solution, dust will be generated inside the closed cover when the coated sand material is screened on the screen. Workers can turn on the vacuum cleaner to suck the dust into the collection bucket in time, so that less dust will drift out from the first discharge channel and the second discharge channel.

[0024] A further feature of this invention is that a filter screen is fixedly connected inside the smoke hole, and the filter screen is made of aluminum.

[0025] By adopting the above technical solution, the filter screen prevents the coated sand material from entering the vacuum cleaner's interior through the smoke holes when it sucks away dust.

[0026] The beneficial effects of this utility model are:

[0027] 1. This utility model, through the coordinated arrangement of the base frame, screen, screen bed, hopper, semi-magnetic roller, eccentric wheel, housing, rotating hole, first motor, discharge port, vibrating spring, second motor, enclosed cover, first discharge channel, second discharge channel, support legs, collecting trough, concave hole, and inclined groove, enables the device to operate by rotating the semi-magnetic roller at high speed inside the housing under the action of the first motor, and driving the eccentric wheel to continuously impact the bottom of the screen bed under the action of the second motor, causing the screen bed and screen to vibrate. Workers pour the mixed coated sand material into the hopper, and the mixed coated sand material... When the material falls, it first comes into contact with the rotating semi-magnetic drum. The metallic and magnetic particles in the mixed coated sand material are attracted to the surface of the semi-magnetic drum. The non-metallic particles in the mixed coated sand material are not affected by the magnetic attraction of the semi-magnetic drum. After sliding off the surface of the semi-magnetic drum, they fall through the feed port onto the upper surface of the vibrating screen. The screen screens the coated sand. The metallic and magnetic particles attracted to the surface of the semi-magnetic drum are affected by gravity when the semi-magnetic drum rotates at high speed to the other half of the non-magnetic area of ​​the semi-magnetic drum. They fall into the inclined chute outside the concave hole and flow out through the inclined chute.

[0028] 2. This utility model, through the coordinated arrangement of the inclined surfaces, wide blades, arc-shaped guide plates, round rubber heads, springs, angle iron frames, round pads, smoke holes, pipes, collection buckets, and filter screens, enables the four inclined surfaces to facilitate the rapid drop of the mixed material from the inside of the hopper into the inside of the housing during use. The wide blades, acting as a barrier, prolong the contact time between the mixed material and the semi-magnetic roller, allowing the semi-magnetic roller to fully magnetically attract the metallic and magnetic particles in the contacted mixed material. The arc-shaped guide plates provide guidance for the transport of non-magnetic materials falling through. The circular rubber head acts as a buffer, preventing the eccentric wheel from damaging the bottom of the screen bed. The spring amplifies the shaking generated by the screen vibration, improving the efficiency of vibratory screening of coated sand. The angle iron frame secures and supports the second motor. The four circular pads reduce the vibration of the outriggers on the ground and provide stable support for the outriggers. When the worker turns on the vacuum cleaner, the dust is sucked into the collection bucket in time, minimizing the amount of dust that drifts out from the first and second discharge channels. The filter screen prevents the coated sand material from entering the vacuum cleaner through the smoke hole when the dust is sucked away. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the first motor and the semi-magnetic roller structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the vacuum cleaner and enclosed cover structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the screen and spring structure of this utility model.

[0034] In the diagram: 1. Base frame; 2. Screen; 3. Screen bed; 4. Hopper; 5. Semi-magnetic roller; 6. Box body; 7. Rotary hole; 8. First motor; 9. Discharge port; 10. Eccentric wheel; 11. Vibrating spring; 12. Second motor; 13. Enclosed cover; 14. First discharge channel; 15. Second discharge channel; 16. Support leg; 17. Collection trough; 18. Concave hole; 19. Inclined trough; 20. Sloping surface; 21. Wide blade; 22. Filter screen; 23. Arc guide plate; 24. Round rubber head; 25. Spring; 26. Angle iron frame; 27. Round pad; 28. Smoke hole; 29. ​​Vacuum cleaner; 30. Collection bucket; 31. Pipe. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] A vibrating screen for coated sand includes the following embodiments:

[0037] Example 1:

[0038] Reference Figure 1-4 A box 6 is fixedly connected to the upper surface of the sieve bed 3. A rotating hole 7 is opened inside the box 6. A first motor 8 is fixedly connected to the outside of the sieve bed 3. The output end of the first motor 8 passes through the inside of the rotating hole 7 and is fixedly connected to the semi-magnetic roller 5. A hopper 4 passes through the inside of the box 6. A discharge port 9 is opened inside the box 6. A vibration spring 11 is fixedly connected to the bottom of the sieve bed 3. The bottom of the vibration spring 11 is fixedly connected to the bottom frame 1. A second motor 12 is fixedly connected to the outside of the bottom frame 1. The output end of the second motor 12 is fixedly connected to the eccentric wheel 10. A closed cover 13 is fixedly connected to the upper surface of the sieve bed 3. A first discharge channel 14 is fixedly connected to the outside of the screen 2. A second discharge channel 15 is fixedly connected to the outside of the sieve bed 3. A support leg 16 is fixedly connected to the bottom of the bottom frame 1. A collection groove 17 is provided on the outside of the support leg 16. A concave hole 18 is opened inside the box 6. An inclined groove 19 is fixedly connected to the outside of the box 6.

[0039] Driven by the first motor 8, the semi-magnetic drum 5 rotates at high speed inside the housing 6. Driven by the second motor 12, the eccentric wheel 10 continuously impacts the bottom of the screen bed 3, causing the screen bed 3 and the screen 2 to vibrate. The worker pours the mixed coated sand material into the hopper 4. When the mixed coated sand material falls, it first contacts the rotating semi-magnetic drum 5. The metal magnetic particles and magnetic particles in the mixed coated sand material are attracted to the surface of the semi-magnetic drum 5. The non-metallic particles in the mixed coated sand material are not affected by the magnetic attraction of the semi-magnetic drum 5. After sliding off the surface of the semi-magnetic drum 5, they fall through the discharge port 9 onto the upper surface of the vibrating screen 2. Through the action of the screen 2, the coated sand is screened. The metal particles and magnetic particles attracted to the surface of the semi-magnetic drum 5 are affected by gravity when the semi-magnetic drum 5 rotates at high speed to the other half of the non-magnetic area of ​​the semi-magnetic drum 5. They fall into the inclined groove 19 outside the concave hole 18 and flow out through the inclined groove 19.

[0040] Example 2:

[0041] Reference Figure 1-3The hopper 4 has four inclined surfaces 20 fixedly connected inside. The semi-magnetic roller 5 has wide blades 21 fixedly connected outside. The spacing between each pair of wide blades 21 is equal 22. The box 6 has two arc-shaped guide plates 23 fixedly connected inside. The eccentric wheel 10 has two round rubber heads 24 fixedly connected outside.

[0042] The four inclined surfaces 20 facilitate the rapid falling of the mixture from the inside of the hopper 4 into the inside of the box 6. The blocking effect of the wide blades 21 increases the contact time between the mixture and the semi-magnetic roller 5, making it easier for the semi-magnetic roller 5 to fully magnetically attract the metal magnetic particles and magnetic particles in the contacting mixture. The round rubber head 24 acts as a buffer to prevent the eccentric wheel 10 from damaging the bottom of the screen bed 3.

[0043] Example 3:

[0044] Reference Figure 3-4 The sieve bed 3 is equipped with a spring 25 inside. One end of the spring 25 is fixedly connected to the sieve 2, and the other end of the spring 25 is fixedly connected to the inner wall of the sieve bed 3. An angle iron frame 26 is fixedly connected to the outside of the second motor 12. The bottom of the angle iron frame 26 is fixedly connected to the support leg 16. A round pad 27 is fixedly connected to the bottom of the support leg 16. There are four round pads 27. A smoke hole 28 is opened inside the closed cover 13. A vacuum cleaner 29 is fixedly connected inside the closed cover 13. A pipe 31 is installed outside the sieve bed 3. A collection bucket 30 is installed on one side of the outer side of the box 6. One end of the pipe 31 passes through the inside of the closed cover 13 and is fixedly connected to the output end of the vacuum cleaner 29. The other end of the pipe 31 passes through the inside of the collection bucket 30. A filter screen 22 is fixedly connected inside the smoke hole 28. The filter screen 22 is made of aluminum.

[0045] The spring 25 amplifies the vibration of the screen 2, improving the efficiency of vibratory screening of the coated sand. The angle iron frame 26 provides fastening and support for the second motor 12. The four round pads 27 reduce the vibration of the support legs 16 on the ground and provide stable support for the support legs 16. When the coated sand material is screened on the screen 2, dust will be generated inside the closed cover 13. The worker turns on the vacuum cleaner 29 to suck the dust into the collection bucket 30 in time. Less dust will drift out from the first discharge channel 14 and the second discharge channel 15. When the filter screen 22 prevents the dust from being sucked away, the coated sand material enters the vacuum cleaner 29 through the smoke hole 28.

[0046] In this invention, the worker simultaneously starts the first motor 8 and the second motor 12. The output end of the first motor 8 drives the semi-magnetic roller 5 to rotate at high speed inside the housing 6. At the same time, the output end of the second motor 12 drives the eccentric wheel 10 to rotate at high speed at the bottom of the screen bed 3. The high-speed rotating eccentric wheel 10 continuously impacts the bottom of the screen bed 3, causing the screen bed 3 to vibrate. Through the vibration spring 11, the screen bed 3 vibrates and shakes on the bottom frame 1, thereby causing the screen 2 to vibrate. The worker pours the mixed coated sand material into the hopper 4. When the mixed coated sand material falls, it first contacts the rotating semi-magnetic roller 5. The metal magnetic particles and magnetic particles in the mixed coated sand material are attracted to the surface of the semi-magnetic roller 5. Non-metallic particles in the mixed coated sand material are not affected by the magnetic attraction of the semi-magnetic roller 5. After sliding off the surface of the semi-magnetic roller 5, they fall through the feed port 9 onto the upper surface of the vibrating screen 2. Through the action of the screen 2, the finer coated sand passes through the screen 2 and falls onto the upper surface of the screen bed 3. With the vibration of the screen bed 3, it finally flows through the second discharge channel 15 to the collection tank 17 for collection. Larger particles in the mixed coated sand material are on the upper surface of the screen 2 and are conveyed to the first discharge channel 14 for discharge with the vibration of the screen 2. Metallic and magnetic particles adsorbed on the surface of the semi-magnetic roller 5 are affected by gravity when the semi-magnetic roller 5 rotates at high speed to the other half of the non-magnetic area of ​​the semi-magnetic roller 5. After the metal and magnetic particles on the surface of roller 5 fall off, they fall into the inclined groove 19 outside the concave hole 18 and flow out through the inclined groove 19. Through the above operation, before screening the coated sand, the metal particles in the coated sand are removed, improving the quality of the coated sand after screening and achieving a better screening effect. The four inclined surfaces 20 facilitate the rapid drop of the mixed material from the inside of the hopper 4 into the inside of the box 6. The blocking effect of the wide blades 21 increases the contact time between the mixed material and the semi-magnetic roller 5, making it easier for the semi-magnetic roller 5 to fully magnetically attract the metal and magnetic particles in the contacted mixed material. The arc guide plate 23 guides the falling non-magnetic materials. The material provides the trajectory of movement, the round rubber head 24 acts as a buffer to prevent the eccentric wheel 10 from damaging the bottom of the screen bed 3, and the spring 25 amplifies the shaking generated when the screen 2 vibrates, improving the efficiency of vibratory screening of coated sand. The angle iron frame 26 serves to fasten and support the second motor 12, and the four round pads 27 reduce the vibration of the support legs 16 to the ground and provide stable support for the support legs 16. When the worker turns on the vacuum cleaner 29, the dust is sucked into the collection bucket 30 in time, and less dust is blown out from the first discharge channel 14 and the second discharge channel 15. The filter screen 22 prevents the coated sand material from entering the vacuum cleaner 29 through the smoke hole 28 when the dust is sucked away.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibrating screen for coated sand, comprising a base frame (1), a screen (2), a screen bed (3), a hopper (4), a semi-magnetic drum (5), and an eccentric wheel (10), characterized in that: A housing (6) is fixedly connected to the upper surface of the sieve bed (3). A rotating hole (7) is provided inside the housing (6). A first motor (8) is fixedly connected to the outside of the sieve bed (3). The output end of the first motor (8) passes through the inside of the rotating hole (7) and is fixedly connected to the semi-magnetic roller (5). The hopper (4) passes through the inside of the housing (6). A discharge port (9) is provided inside the housing (6). A vibration spring (11) is fixedly connected to the bottom of the sieve bed (3). The bottom of the vibration spring (11) is fixedly connected to the bottom frame (1). The outside of the bottom frame (1) is fixedly connected to... There is a second motor (12), the output end of the second motor (12) is fixedly connected to the eccentric wheel (10), the upper surface of the screen bed (3) is fixedly connected to the closed cover (13), the outside of the screen (2) is fixedly connected to the first discharge channel (14), the outside of the screen bed (3) is fixedly connected to the second discharge channel (15), the bottom of the bottom frame (1) is fixedly connected to the support leg (16), the outside of the support leg (16) is provided with a collection groove (17), the inside of the box (6) is provided with a concave hole (18), and the outside of the box (6) is fixedly connected to the inclined groove (19).

2. The vibrating screen for coated sand according to claim 1, characterized in that: The hopper (4) is fixedly connected to a ramp (20) inside, and the number of ramps (20) is four.

3. The vibrating screen for coated sand according to claim 1, characterized in that: The semi-magnetic roller (5) is fixedly connected to a wide blade (21), and the spacing between each pair of the wide blades (21) is equal.

4. The vibrating screen for coated sand according to claim 1, characterized in that: The box (6) is fixedly connected to an arc guide plate (23), and there are two arc guide plates (23).

5. A vibrating screen for coated sand according to claim 1, characterized in that: The eccentric wheel (10) is externally fixedly connected to a round rubber head (24), and there are two round rubber heads (24).

6. A vibrating screen for coated sand according to claim 1, characterized in that: The sieve bed (3) is equipped with a spring (25), one end of which is fixedly connected to the sieve (2), and the other end of which is fixedly connected to the inner wall of the sieve bed (3).

7. A vibrating screen for coated sand according to claim 1, characterized in that: The second motor (12) is externally fixedly connected to an angle iron frame (26), and the bottom of the angle iron frame (26) is fixedly connected to the support leg (16).

8. A vibrating screen for coated sand according to claim 1, characterized in that: The bottom of the support leg (16) is fixedly connected to a round pad (27), and there are four round pads (27).

9. A vibrating screen for coated sand according to claim 1, characterized in that: The enclosed cover (13) has a smoke hole (28) inside. A vacuum cleaner (29) is fixedly connected inside the enclosed cover (13). A pipe (31) is provided outside the sieve bed (3). A collection bucket (30) is provided on one side of the outer side of the box (6). One end of the pipe (31) passes through the inside of the enclosed cover (13) and is fixedly connected to the output end of the vacuum cleaner (29). The other end of the pipe (31) passes through the inside of the collection bucket (30).

10. A vibrating screen for coated sand according to claim 9, characterized in that: A filter screen (22) is fixedly connected inside the smoke hole (28), and the filter screen (22) is made of aluminum.

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