Breakage-proof discharging centrifugal machine

Abstract

The invention relates to the technical field of centrifugal machines, in particular to an anti-breaking discharging centrifugal machine which comprises a main shaft, a filter cylinder, a discharging cylinder, an outer cylinder and a cylinder cover, the filter cylinder is connected with the main shaft through a support and rotationally installed in the center of the outer cylinder, filter cloth is installed on the inner side of the filter cylinder, and the bottom of the filter cloth communicates with the discharging cylinder. The buffer mechanism comprises a blanking disc, a rotating shaft and a blanking motor, the outlet end of the feeding pipe faces the blanking disc, the rotating speed of the blanking disc is smaller than that of the filter cylinder, the rotating direction of the blanking disc is the same as that of the filter cylinder, the stripping mechanism comprises a cutter feeding rod and a scraper set, and the scraper set is used for cleaning materials on the filter cloth. The blanking disc is arranged below the feeding pipe to receive materials, the materials firstly make contact with the blanking disc with the low rotating speed and then are driven by the blanking disc to move in the circumferential direction, the moving speed of the materials is gradually increased through the blanking disc, the collision force between the materials and filter cloth in the filter cylinder is reduced, and the materials are prevented from being collided and broken in the feeding process.

Description

Technical Field

[0001] The invention relates to the technical field of centrifuges, in particular to an anti-crushing and unloading centrifuge. Background Art

[0002] When processing materials with good dehydration performance, good sliding properties and requirements for grain crushing rate after separation (such as monosodium glutamate, etc.), if the ordinary vertical scraper bottom discharge centrifuge is fed at high speed, the material will be crushed in large quantities due to high-speed collision with the filter cloth on the drum wall, resulting in the grain crushing rate failing to meet the requirements; and if the material is fed at a low speed, the material that has not been fully dehydrated will flow downward into the discharge port due to gravity, resulting in failure of material dehydration. Therefore, the existing vertical scraper bottom discharge centrifuge cannot be well used for centrifugal drying of such materials.

[0003] Patent document publication number CN208494596U discloses a centrifuge for separating fragile grains, comprising a machine base, a shell assembly, a transmission component, a drum component, and a power device, the shell being provided with a liquid discharge pipe, the shell being provided with a discharge hopper, the shell being provided with a cover assembly, a feed pipe being passed through the cover assembly, and a scraper component being provided on the cover assembly. The drum component comprises a drum base connected to the transmission component, the drum base being connected to the drum bottom through at least three wing plates, a discharge port being provided between the wing plates, a guide cylinder being provided on the drum base, a connecting short shaft being provided at the upper end of the guide cylinder passing through the cover assembly, the connecting short shaft being connected to a positioning seat detachably provided on the cover plate through a bearing seat, a sealing cover being sleeved on the guide cylinder and rotating together with the guide cylinder, and the sealing cover being able to move up and down along the guide cylinder, and the sealing cover covering the discharge port at the lower part of the drum after descending, and a driving device for driving the sealing cover to move up and down is provided on the cover plate. However, this patent still has some shortcomings: when the material enters the drum component, it directly contacts and collides with the rapidly rotating drum component, which easily causes the material to break, and part of the material will splash to the center of the drum component, thereby affecting the dehydration effect of the material. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that materials are easily collided and broken during the feeding process of the centrifuge, the present invention provides an anti-breaking unloading centrifuge to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an anti-crushing unloading centrifuge, including a main shaft, a filter cartridge, a lower material cylinder, an outer cylinder and a cylinder cover, wherein the main shaft is rotatably mounted at the center of the lower material cylinder, the outer cylinder is fixed at the upper end of the lower material cylinder, the filter cartridge is connected to the main shaft through a bracket and is rotatably mounted at the center of the outer cylinder, a filter cloth is installed on the inner side of the filter cartridge, the bottom of the filter cloth is connected to the lower material cylinder, the cylinder cover is used to seal the top of the outer cylinder, and also includes a feeding mechanism, a buffer mechanism and a stripping mechanism, the feeding mechanism includes a feeding pipe, the buffer mechanism includes a drop plate, a rotating shaft and a drop motor, the rotating shaft is rotatably mounted on On the cylinder cover, the center of the blanking plate is fixedly connected to the lower end of the rotating shaft, the blanking motor is fixed on the cylinder cover, the output shaft of the blanking motor is coaxially fixedly connected to the upper end of the rotating shaft, the outlet end of the feed pipe is arranged toward the blanking plate, the rotation speed of the blanking plate is lower than the rotation speed of the filter cartridge, and the rotation direction of the blanking plate is the same as that of the filter cartridge, the stripping mechanism includes a feed rod and a scraper group, the feed rod is mounted on the cylinder cover, the scraper group is fixed at the lower end of the feed rod, the feed rod is used to drive the scraper group to approach the side wall of the filter cloth and move up and down, and the scraper group is used to clean the material on the filter cloth.

[0006] Preferably, the buffer mechanism further comprises a conical cover, the bottom of which is fixedly connected to the outer ring of the drop tray, and the bottom of the conical cover is provided with a plurality of discharge ports along the circumferential direction.

[0007] Preferably, a plurality of arc-shaped guide protrusions are fixed to the upper surface of the discharge tray, and the arc-shaped guide protrusions are arranged on both sides of the discharge port.

[0008] Preferably, the feeding mechanism also includes a feeding barrel, a turntable and a plurality of material-discharging pieces, wherein the plurality of material-discharging pieces are arranged in a circular array below the turntable and are fixedly connected to the turntable, the turntable is rotatably mounted on the inner top of the feeding barrel, the center of the feeding barrel is fixed at the outlet end of the feeding pipe and is connected to the feeding pipe, a material-spreading port is arranged on the side of the feeding barrel, the material-spreading port is arranged toward the inner wall of the conical cover, and the material-spreading port extends from one side of the turntable and abuts against the inner wall of the conical cover.

[0009] Preferably, a rubber sleeve is fixed to the outer ring of the turntable.

[0010] Preferably, the stripping mechanism also includes a worm gear mechanism, a rotating seat and a feed cylinder, the worm gear mechanism is fixed on the barrel cover, the rotating seat is coaxially fixedly connected with the worm wheel of the worm gear mechanism, the worm of the worm gear mechanism is connected to a driving motor, the feed cylinder is fixed on the rotating seat, the piston rod of the feed cylinder passes through the rotating seat and is fixedly connected to the upper end of the feed rod, the rotating seat can drive the feed rod and the feed cylinder to rotate, and the feed cylinder is used to drive the feed rod to move up and down.

[0011] Preferably, a tool holder is fixed to the bottom of the feed rod, and the scraper group includes a cutter disc, a scraper motor and a plurality of scraper blades. The cutter disc is rotatably installed below the cutter holder, and the output shaft of the scraper motor passes through the cutter holder and is coaxially fixedly connected to the cutter disc. The plurality of scraper blades are arranged in a circular array and fixed on the cutter disc, and the scraper blades are used to clean the material on the filter cloth.

[0012] Preferably, the tail of each scraper blade is bent toward the rotation center to form a material guide portion, and the material guide portion is used to move the scraped material to the center of the knife disc and fall together.

[0013] Preferably, the discharge tray is arranged at an angle and an extension line of the straight line where the discharge port is located can intersect with the inner wall of the filter cartridge.

[0014] The beneficial effect of the present invention is that a buffer mechanism is provided, and when the material enters the filter cartridge through the feed pipe, since the rotation speed of the filter cartridge is much greater than the movement speed of the material, it is easy for the material to collide violently with the filter plate in the filter cartridge. In order to reduce the collision force between the two, the present invention arranges a drop tray under the feed pipe to receive the material, and the rotation speed of the drop tray is lower than the rotation speed of the filter cartridge, and the rotation direction of the drop tray is the same as that of the filter cartridge. Therefore, the material first contacts the drop tray with a lower rotation speed, and is then driven by the drop tray and moves in a circular direction. The movement speed of the material is gradually accelerated by the drop tray, and then the relative speed between the material and the filter cartridge is reduced, so as to reduce the collision force between the material and the filter cloth in the filter cartridge and prevent the material from colliding and breaking during the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of an anti-crushing and unloading centrifuge of the present invention; Figure 2 It is a structural schematic diagram of a filter cloth of an anti-crushing and unloading centrifuge according to the present invention; Figure 3 It is a structural schematic diagram of a filter cartridge of an anti-crushing and unloading centrifuge of the present invention; Figure 4 It is a structural schematic diagram of a conical cover of an anti-crushing and unloading centrifuge according to the present invention; Figure 5 It is a structural schematic diagram of a drop tray of an anti-crushing and unloading centrifuge according to the present invention; Figure 6 It is a structural schematic diagram of a feeding cylinder of an anti-crushing and unloading centrifuge of the present invention; Figure 7 The present invention is a schematic structural diagram of a scraper blade of an anti-crushing and unloading centrifuge.

[0017] Figure numerals: 1. main shaft; 2. filter cylinder; 3. discharge cylinder; 4. outer cylinder; 5. cylinder cover; 6. filter cloth; 7. feed pipe; 8. discharge plate; 9. rotating shaft; 10. discharge motor; 11. feed rod; 12. scraper assembly; 13. conical cover; 14. discharge port; 15. arc-shaped guide protrusion; 16. feed cylinder; 17. turntable; 18. material dispensing piece; 19. material spreading port; 20. rubber sleeve; 21. worm gear mechanism; 22. rotating seat; 23. feed cylinder; 24. driving motor; 25. knife holder; 26. knife plate; 27. scraper motor; 28. scraper blade; 29. ​​material guide part. DETAILED DESCRIPTION

[0018] 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.

[0019] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] like Figures 1 to 7As shown, the present invention provides an embodiment of an anti-crushing unloading centrifuge, including a main shaft 1, a filter cartridge 2, a lower material barrel 3, an outer barrel 4 and a barrel cover 5. The main shaft 1 is rotatably installed at the center of the lower material barrel 3, the outer barrel 4 is fixed at the upper end of the lower material barrel 3, the filter cartridge 2 is connected to the main shaft 1 through a bracket and is rotatably installed at the center of the outer barrel 4, a filter cloth 6 is installed on the inner side of the filter cartridge 2, the filter cartridge 2 drives the filter cloth 6 to rotate to achieve centrifugal dehydration, the bottom of the filter cloth 6 is connected to the lower material barrel 3, the barrel cover 5 is used to seal the top of the outer barrel 4, and also includes a feeding mechanism, a buffer mechanism and a stripping mechanism.

[0021] The buffer mechanism includes a drop tray 8, a rotating shaft 9 and a drop motor 10. The rotating shaft 9 is rotatably installed on the cylinder cover 5. The center of the drop tray 8 is fixedly connected to the lower end of the rotating shaft 9. The drop motor 10 is fixed on the cylinder cover 5. The output shaft of the drop motor 10 is coaxially fixedly connected to the upper end of the rotating shaft 9. The outlet end of the feed pipe 7 is arranged toward the drop tray 8, so that the material can first fall on the drop tray 8 after entering the filter cartridge 2 from the feed pipe 7, and then spread the material to the filter cloth 6 in the filter cartridge 2 through the drop tray 8.

[0022] The buffer mechanism also includes a conical cover 13, the bottom of the conical cover 13 is fixedly connected to the outer ring of the drop tray 8, and a plurality of discharge ports 14 are opened in the circumferential direction at the bottom of the conical cover 13. A plurality of arc-shaped guide protrusions 15 are also fixed to the upper surface of the drop tray 8. The arc-shaped guide protrusions 15 are arranged on both sides of the discharge port 14. The material is guided by the arc-shaped guide protrusions 15 so that the moving direction of the material is consistent with the rotation direction of the drop tray 8 and the filter cartridge 2, thereby reducing the collision angle of the material and preventing the material from being broken. The drop tray 8 is tilted and the extension line of the straight line where the discharge port 14 is located can intersect with the inner wall of the filter cartridge 2. When the tilted material tray rotates, the material rotated to a high position can be thrown to the upper part of the filter cartridge 2, and the material rotated to a low position can be thrown to the lower part of the filter cartridge 2. Therefore, the present invention achieves the effect of evenly dispersing the material to be dehydrated to various parts of the filter cloth 6 by tilting the drop tray 8, thereby preventing uneven material distribution from affecting the force balance of the filter cartridge 2 when it rotates.

[0023] The working principle of the buffer mechanism is: when the material enters the filter cartridge 2 through the feed pipe 7, since the rotation speed of the filter cartridge 2 is much greater than the moving speed of the material, it is easy for the material to collide violently with the filter plate in the filter cartridge 2. In order to reduce the collision force between the two, the present invention arranges a drop tray 8 under the feed pipe 7 to receive the material, and the rotation speed of the drop tray 8 is lower than the rotation speed of the filter cartridge 2, and the drop tray 8 has the same rotation direction as the filter cartridge 2. Therefore, the material first contacts the drop tray 8 with a lower rotation speed, and then is driven by the drop tray 8 and moves in a circular direction. The moving speed of the material is gradually accelerated by the drop tray 8, and then the relative speed between the material and the filter cartridge 2 is reduced, so as to reduce the collision force between the material and the filter cloth 6 in the filter cartridge 2, and prevent the material from colliding and breaking during the feeding process.

[0024] The feeding mechanism includes a feeding pipe 7, a feeding barrel 16, a turntable 17 and a plurality of material-discharging pieces 18. The plurality of material-discharging pieces 18 are arranged in a circular array below the turntable 17 and are fixedly connected to the turntable 17. The turntable 17 is rotatably installed on the inner top of the feeding barrel 16. The center of the feeding barrel 16 is fixed at the outlet end of the feeding pipe 7 and is connected to the feeding pipe 7. A material-spreading port 19 is arranged on the side of the feeding barrel 16. The material-spreading port 19 is arranged toward the inner wall of the conical cover 13. The material-spreading port 19 extends out of one side of the turntable 17 and abuts against the inner wall of the conical cover 13. A rubber sleeve 20 is fixed on the outer ring of the turntable 17. The friction between the turntable 17 and the conical cover 13 is increased by the rubber sleeve 20, so that the conical cover 13 can drive the turntable 17 to rotate together when rotating.

[0025] When the material in the feeding pipe 7 contacts the drop plate 8, the movement directions of the two are inconsistent, which makes it easy for the material to splash. In the present invention, the conical cover 13 drives the turntable 17 to rotate, so that the turntable 17 and the conical cover 13 keep rotating at the same speed. After entering the feeding barrel 16, the material is pushed by the material-pickup piece 18 on the turntable 17 for initial acceleration. Due to the obstruction of the feeding barrel 16, the material can only be discharged from the spreading port 19 to the inner wall of the conical cover 13 at this time, preventing the material from splashing everywhere. On the other hand, the material is discharged from the feeding barrel 16 to the inner wall of the conical cover 13, and then falls along the conical cover 13 to the drop plate 8, thereby increasing the moving distance of the material in the buffer mechanism, so that the material can gradually accelerate in the process of moving along the surface of the conical cover 13 and the drop plate 8, reducing the impact on the material caused by the acceleration process. At the same time, after the material is dispersed through the conical cover 13, the material can be evenly dropped on various parts of the drop plate 8, so that the drop plate 8 can spread the material more evenly on the filter cloth 6 in the filter cartridge 2.

[0026] The stripping mechanism includes a feed rod 11 and a scraper group 12. The feed rod 11 is installed on the cylinder cover 5, and the scraper group 12 is fixed to the lower end of the feed rod 11. The feed rod 11 is used to drive the scraper group 12 to approach the side wall of the filter cloth 6 and move up and down. The scraper group 12 is used to clean the material on the filter cloth 6.

[0027] The stripping mechanism also includes a worm gear mechanism 21, a rotating seat 22 and a feed cylinder 23. The worm gear mechanism 21 is fixed on the barrel cover 5. The rotating seat 22 is coaxially fixedly connected with the worm gear of the worm gear mechanism 21. The worm of the worm gear mechanism 21 is connected to a driving motor 24. The feed cylinder 23 is fixed on the rotating seat 22. The piston rod of the feed cylinder 23 passes through the rotating seat 22 and is fixedly connected to the upper end of the feed rod 11. The rotating seat 22 can drive the feed rod 11 and the feed cylinder 23 to rotate. The feed cylinder 23 is used to drive the feed rod 11 to move up and down.

[0028] A tool holder 25 is fixed to the bottom of the feed rod 11, and the scraper group 12 includes a cutter disc 26, a scraper motor 27 and a plurality of scraper blades 28. The cutter disc 26 is rotatably installed below the cutter holder 25, and the output shaft of the scraper motor 27 passes through the cutter holder 25 and is coaxially fixedly connected to the cutter disc 26. The plurality of scraper blades 28 are arranged in a circular array and fixed on the cutter disc 26, and the scraper blades 28 are used to clean the material on the filter cloth 6.

[0029] After the material is dehydrated, the driving motor 24 drives the rotating seat 22 and the feed rod 11 to deflect slightly through the worm gear mechanism 21, so that the scraper blade 28 at the bottom of the knife holder 25 can approach the filter plate, and the knife disc 26 is driven to rotate by the scraper motor 27, and the scraper blade 28 is driven to move downward by the feed cylinder 23. At this time, the filter cartridge 2 and the filter plate keep rotating, so that the scraper can scrape the material attached to the filter cloth 6 to achieve material unloading.

[0030] The tail of each scraper blade 28 is bent toward the rotation center to form a material guide portion 29, which is used to move the scraped material to the center of the cutter disc 26 for centralized falling, thereby preventing the material from splashing and colliding after being scraped, thereby reducing the breakage rate of the material during the feeding process.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above are only preferred implementation methods of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An anti-crushing unloading centrifuge, comprising a main shaft (1), a filter cartridge (2), a lower material cylinder (3), an outer cylinder (4) and a cylinder cover (5), wherein the main shaft (1) is rotatably mounted at the center of the lower material cylinder (3), the outer cylinder (4) is fixed at the upper end of the lower material cylinder (3), the filter cartridge (2) is connected to the main shaft (1) via a bracket and is rotatably mounted at the center of the outer cylinder (4), a filter cloth (6) is mounted on the inner side of the filter cartridge (2), the bottom of the filter cloth (6) is connected to the lower material cylinder (3), and the cylinder cover (5) is used to seal the top of the outer cylinder (4), characterized in that: The invention also comprises a feeding mechanism, a buffer mechanism and a stripping mechanism, wherein the feeding mechanism comprises a feeding pipe (7), the buffer mechanism comprises a blanking plate (8), a rotating shaft (9) and a blanking motor (10), the rotating shaft (9) being rotatably mounted on the cylinder cover (5), the center of the blanking plate (8) being fixedly connected to the lower end of the rotating shaft (9), the blanking motor (10) being fixed on the cylinder cover (5), the output shaft of the blanking motor (10) being coaxially fixedly connected to the upper end of the rotating shaft (9), the outlet end of the feeding pipe (7) being directed toward the blanking plate (8), and the outlet end of the feeding pipe (7) being directed toward the blanking plate (8). ) is arranged, the rotation speed of the drop plate (8) is lower than the rotation speed of the filter cartridge (2), and the drop plate (8) and the filter cartridge (2) rotate in the same direction, the stripping mechanism comprises a feed rod (11) and a scraper group (12), the feed rod (11) is mounted on the cartridge cover (5), the scraper group (12) is fixed to the lower end of the feed rod (11), the feed rod (11) is used to drive the scraper group (12) to approach the side wall of the filter cloth (6) and move up and down, and the scraper group (12) is used to clean the material on the filter cloth (6).

2. The anti-crushing and unloading centrifuge according to claim 1, characterized in that: The buffer mechanism further comprises a conical cover (13), the bottom of which is fixedly connected to the outer ring of the material drop tray (8), and the bottom of the conical cover (13) is provided with a plurality of discharge ports (14) along the circumferential direction.

3. The anti-crushing and unloading centrifuge according to claim 2, characterized in that: A plurality of arc-shaped guide protrusions (15) are also fixed to the upper surface of the discharge tray (8), and the arc-shaped guide protrusions (15) are arranged on both sides of the discharge port (14).

4. The anti-crushing and unloading centrifuge according to claim 2, characterized in that: The feeding mechanism further comprises a feeding barrel (16), a rotating disk (17) and a plurality of material-dispensing pieces (18); the plurality of material-dispensing pieces (18) are arranged in a circular array below the rotating disk (17) and are fixedly connected to the rotating disk (17); the rotating disk (17) is rotatably mounted on the inner top of the feeding barrel (16); the center of the feeding barrel (16) is fixed to the outlet end of the feeding pipe (7) and is connected to the feeding pipe (7); a material-spreading port (19) is arranged on the side of the feeding barrel (16); the material-spreading port (19) is arranged toward the inner wall of the conical cover (13); one side of the rotating disk (17) extends out of the material-spreading port (19) and abuts against the inner wall of the conical cover (13).

5. The anti-crushing and unloading centrifuge according to claim 4, characterized in that: A rubber sleeve (20) is fixed to the outer ring of the rotating disk (17).

6. The anti-crushing and unloading centrifuge according to claim 1, characterized in that: The stripping mechanism further comprises a worm gear mechanism (21), a rotating seat (22) and a feed cylinder (23); the worm gear mechanism (21) is fixed on the barrel cover (5); the rotating seat (22) is coaxially fixedly connected to the worm gear of the worm gear mechanism (21); the worm of the worm gear mechanism (21) is connected to a driving motor (24); the feed cylinder (23) is fixed on the rotating seat (22); the piston rod of the feed cylinder (23) passes through the rotating seat (22) and is fixedly connected to the upper end of the feed rod (11); the rotating seat (22) can drive the feed rod (11) and the feed cylinder (23) to rotate; the feed cylinder (23) is used to drive the feed rod (11) to move up and down.

7. The anti-crushing and unloading centrifuge according to claim 1, characterized in that: A knife holder (25) is fixed to the bottom of the knife feed rod (11); the scraper group (12) comprises a knife disc (26), a scraper motor (27) and a plurality of scraper blades (28); the knife disc (26) is rotatably mounted below the knife holder (25); an output shaft of the scraper motor (27) passes through the knife holder (25) and is coaxially fixedly connected to the knife disc (26); a plurality of scraper blades (28) are arranged in a circular array and are fixed on the knife disc (26); and the scraper blades (28) are used to clean materials on the filter cloth (6).

8. The anti-crushing and unloading centrifuge according to claim 7, characterized in that: The tail of each scraper blade (28) is bent toward the rotation center to form a material guide portion (29), and the material guide portion (29) is used to move the scraped material to the center of the knife disc (26) to fall centrally.

9. The anti-crushing and unloading centrifuge according to claim 2, characterized in that: The discharge tray (8) is arranged obliquely and an extension line of the straight line where the discharge port (14) is located can intersect with the inner wall of the filter cartridge (2).

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