Vertical type lower discharging centrifugal machine

Abstract

The invention relates to the technical field of solid-liquid separation, and discloses a vertical lower discharging centrifugal machine which comprises a machine shell, a machine cover is fixedly installed at the top of the machine shell, a bearing seat frame is fixedly installed at the bottom of the machine shell, a machine base is fixedly installed at the bottom end of the bearing seat frame, a rotary drum is rotationally arranged in the machine shell, and a feeding pipe is arranged on one side of the machine cover. A scraper device is arranged on the other side of the machine cover and comprises a main body, the main body is fixedly installed on the outer edge of the corresponding side of the machine cover, a second oil cylinder is arranged at the top of the main body, a first oil cylinder is arranged on the outer side of the main body, a scraper lifting shaft penetrates through the main body, and a hole channel is formed in the axis of the scraper lifting shaft. The whole working process is fully automatically operated through a program, manual intervention is not needed, the structure is compact, the rigidity is good, the torque during discharging is large, and a filter cake can be automatically removed.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to a vertical bottom-discharging centrifuge. Background Art

[0002] Centrifuges are widely used in the fields of pharmaceuticals, chemicals, etc. to achieve solid-liquid separation. In the prior art, since the vertical centrifugal unloader needs to centrifuge the solid and liquid materials, the solid and liquid materials are separated from each other. However, after the centrifugation is completed, a large amount of solid material residue will remain on the wall of the solid-liquid separation bin. If these residual materials cannot be processed in time, it will make the subsequent processes difficult to carry out, and some solid materials will even corrode the bin wall, resulting in a reduction in the service life of the centrifuge. Summary of the invention

[0003] The present application aims to provide a vertical bottom-discharging centrifuge to solve the problems in the background technology.

[0004] An embodiment of the present invention provides a vertical bottom-discharging centrifuge, comprising a casing, a cover fixedly mounted on the top of the casing, a bearing seat frame fixedly mounted on the bottom of the casing, a base fixedly mounted on the bottom end of the bearing seat frame, a rotating drum rotatably arranged in the casing, a feeding pipe arranged on one side of the cover, a scraper device arranged on the other side of the cover, the scraper device comprising a main body, the main body fixedly mounted on the outer edge of the corresponding side of the cover, a second oil cylinder arranged on the top of the main body, a first oil cylinder arranged on the outer side of the main body, a scraper lifting shaft penetrating the main body, and a hole opened on the axis of the scraper lifting shaft.

[0005] As a preferred solution of the present invention, a shock absorber is fixedly mounted on the bottom end of the base.

[0006] As a preferred solution of the present invention, it also includes a motor fixed relative to the bearing seat frame, and the output shaft of the motor is fixedly mounted with a driving pulley; The bottom end of the rotating drum is fixedly connected with a main shaft, a through groove for the main shaft is opened in the center of the bearing seat frame, an annular protrusion is formed around the through groove, a bearing sleeve is fixedly installed on the inner wall of the annular protrusion, the main shaft is connected to the bearing sleeve through a bearing, the bottom end of the main shaft extends to the outside of the bearing seat frame and a driven pulley is fixedly installed, a belt drive connection is established between the driving pulley and the driven pulley, a pressure cover is fixedly installed on the top of the annular protrusion, a sleeve for installing the bearing is fixedly provided on the main shaft, and a sealing ring in a forced state is embedded in the gap between the pressure cover and the sleeve.

[0007] As a preferred solution of the present invention, a collecting hopper is fixedly installed at the bottom end of the machine base.

[0008] As a preferred solution of the present invention, a water outlet is provided on one side of the bottom of the bearing seat frame, and an annular slope is fixedly installed on the bottom of the bearing seat frame corresponding to the gap between the casing and the drum.

[0009] As a preferred solution of the present invention, a through hole is provided at the axis of the scraper lifting shaft, a scraper sleeve is fixedly installed at the bottom end of the scraper lifting shaft, a nozzle is fixedly installed at the outer end of the scraper sleeve, a roller seat is fixedly installed on one side of the outer end of the scraper sleeve through an elastic steel plate, a roller is rotatably installed on the roller seat, a scraper is fixedly installed on the scraper sleeve, the main body of the scraper sleeve is rod-shaped, and a channel is opened at the rotating shaft of the rod-shaped part of the scraper sleeve to connect the through hole and the nozzle; The first oil cylinder is used to make the scraper rise and fall vertically, and the second oil cylinder is used to make the scraper rotate horizontally.

[0010] As a preferred solution of the present invention, a sliding mounting sleeve is provided on the machine cover, the feeding tube is slidably arranged in the sliding mounting sleeve, a slot is provided on one side of the sliding mounting sleeve, a portion of the feeding tube extends outside the slot to be fixedly connected with a reciprocating plate, a bracket for linearly slidably mounting the reciprocating plate is provided on the machine cover, the bracket drives the reciprocating plate to move through a screw assembly, a driven gear is provided on the bottom end fixed sleeve of the screw assembly, a follow-up motor is provided on the machine cover, the rotation speed of the follow-up motor is the same as that of the motor, and a driving gear meshing with the driven gear is provided on the output shaft of the follow-up motor.

[0011] Compared with the prior art, the beneficial effects of the present invention are: The scraper is supported by a roller to rotate along the inner wall of the drum. The scraper can move up and down and rotate left and right for multiple times to finally completely remove the filter cake. The entire working process is fully automatically operated by a program without manual intervention. The present invention has a compact structure, good rigidity, large torque during unloading, and the filter cake can be automatically removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A half-section schematic diagram of the overall structure of the present invention; Figure 2 A schematic structural diagram of a scraper device of the present invention at one angle; Figure 3 A schematic structural diagram of the scraper device of the present invention from another angle; Figure 4 For the present invention Figure 1 A partial enlarged view of middle A; Figure 5 This is a schematic diagram of the installation of the feeding pipe in the present invention; Figure 6 It is a schematic diagram of the installation of the driven gear and the driving gear in the present invention; Figure 7 It is a schematic diagram of the coordination of oil cylinder 1 and oil cylinder 2 in the present invention.

[0014] In the figure: 1. Casing; 2. Bearing seat; 3. Drum; 4. Cover; 5. Scraper device; 6. Scraper lifting shaft; 7. Bearing bushing; 8. Main shaft; 9. Driven pulley; 10. Motor; 11. Driving pulley; 12. Collecting hopper; 13. Bearing; 14. Sheath; 15. Gland; 16. Sealing ring; 17. Machine base; 18. Shock absorber; 19. Water outlet; 20. Oil cylinder 1; 21. Oil cylinder 2 ; 22. scraper; 23. through hole; 24. channel; 25. nozzle; 26. roller; 27. roller seat; 28. elastic steel plate; 29. ​​feeding pipe; 30. scraper blade; 31. scraper sleeve; 32. sliding mounting sleeve; 33. reciprocating plate; 34. screw assembly; 35. bracket; 36. driven gear; 37. driving gear; 38. follower motor; 39. mounting plate; 40. connecting rod. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0017] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The problem to be solved by the present invention is achieved by the following technical solution: like Figures 1 to 4As shown, the present application provides a vertical bottom-discharging centrifuge including a casing 1, a cover 4 is fixedly installed on the top of the casing 1, a bearing seat frame 2 is fixedly installed on the bottom of the casing 1, a base 17 is fixedly installed on the bottom end of the bearing seat frame 2, a rotating drum 3 is rotatably arranged in the casing 1, a feeding pipe 29 is arranged on one side of the cover 4, and a scraper device 5 is arranged on the other side of the cover 4. The scraper device 5 includes a main body, which is fixedly installed on the outer edge of the corresponding side of the cover 4, a cylinder 21 is arranged on the top of the main body, and a cylinder 1 20 is arranged on the outside of the main body. A scraper lifting shaft 6 is penetrated on the main body, and a channel 24 is opened on the axis of the scraper lifting shaft 6. A shock absorber 18 is fixedly installed on the bottom end of the base 17. It also includes a motor 10 which is fixed relative to the bearing seat frame 2, and the output shaft of the motor 10 is fixedly installed with a driving pulley 11; the bottom end of the drum 3 is fixedly connected with a main shaft 8, and the center of the bearing seat frame 2 is provided with a through groove for the main shaft 8, and an annular protrusion is formed around the through groove, and a bearing bushing 7 is fixedly installed on the inner wall of the annular protrusion, and the main shaft 8 is connected to the bearing bushing 7 through a bearing 13. The bottom end of the main shaft 8 extends to the outside of the bearing seat frame 2 and is fixedly installed with a driven pulley 9, and a belt transmission connection is established between the driving pulley 11 and the driven pulley 9, and a pressure cover 15 is fixedly installed on the top of the annular protrusion, and a sleeve 14 for installing the bearing 13 is fixedly provided on the main shaft 8, and a sealing ring 16 in a forced state is embedded in the gap between the pressure cover 15 and the sleeve 14. A collecting hopper 12 is fixedly installed at the bottom of the base 17, and a plurality of filter cake discharge slots are opened at the bottom of the drum 3. Since the feed of the present invention is directly sprayed onto the inner wall of the drum 3, and the drum 3 always maintains the feed speed during the feeding process, the centrifugal force generated by the rotation of the drum 3 will support the feed on the inner wall of the drum 3, thereby ensuring that the feed will not be discharged from the discharge slot at the bottom of the drum 3 before filtering. When cleaning the filter cake, the speed of the drum 3 is rapidly reduced, so that the centrifugal force of the filter cake is greatly reduced. The filter cake cleaned by the scraper device 5 can enter the collecting hopper 12 along the discharge slot under the action of gravity and finally be discharged from the device. A water outlet 19 is provided on one side of the bottom of the bearing seat frame 2, and an annular slope is fixedly installed at the bottom of the bearing seat frame 2 corresponding to the gap between the housing 1 and the drum 3. . A through hole 23 is provided at the axis of the scraper lifting shaft 6, a scraper sleeve 31 is fixedly installed at the bottom end of the scraper lifting shaft 6, a nozzle 25 is fixedly installed at the outer end of the scraper sleeve 31, a roller seat 27 is fixedly installed on one side of the outer end of the scraper sleeve 31 through an elastic steel plate 28, a roller 26 is rotatably installed on the roller seat 27, a scraper 22 is fixedly installed on the scraper sleeve 31, the main body of the scraper sleeve 31 is rod-shaped, and a channel 24 is opened at the rotating axis of the rod-shaped part of the scraper sleeve 31 to connect the through hole 23 and the nozzle 25.

[0019] like Figure 7As shown, the present invention also provides a specific method for the oil cylinder 20 to achieve lifting and the oil cylinder 21 to achieve rotation: a mounting plate 39 is fixedly installed on the top of the movable shaft of the oil cylinder 20, one end of the oil cylinder 21 is hinged on the mounting plate 39, and one end of the connecting rod 40 is hinged on the movable end of the oil cylinder 21, and the other end of the connecting rod 40 is fixedly sleeved on the scraper lifting shaft 6, and the scraper lifting shaft 6 is rotatably installed on the mounting plate 39, that is, when the movable shaft of the oil cylinder 20 rises, the mounting plate 39 rises accordingly, and the scraper lifting shaft 6 can be driven to rise through the mounting plate 39, and when the oil cylinder 21 is extended, the angle between the oil cylinder 21 and the connecting rod 40 changes accordingly, so that the scraper lifting shaft 6 rotates. This is a common connecting rod driven rotation structure belonging to the prior art.

[0020] When the centrifuge of the present invention is working, firstly, a suitable filter cloth is laid in the drum 3, and the centrifuge is started, that is, the motor 10 drives the driving pulley 11 to drive the driven pulley 9 to drive the main shaft 8 and drive the drum 3 to rotate. When the loading speed is reached, the material is injected into the drum 3 from the feeding pipe 29. When a certain amount is reached, the speed is increased to the maximum speed, and the liquid in the material passes through the filter cloth on the wall of the drum 3 and the filter holes on the drum 3 and is discharged from the water outlet 19. The solid phase is trapped in the filter cloth, and the speed of the drum 3 is reduced to reach the unloading speed, and the centrifuge is started. The oil cylinder 1 20 makes the scraper 22 rise and fall, and the oil cylinder 21 is started to make the scraper 22 rotate left and right. While the scraper 22 scrapes the filter cake, gas with a certain pressure is introduced into the through hole 23, and reaches the nozzle 25 through the hole 24. The gas is blown to the surface of the filter cake near the scraper blade 30, making the filter cake easier to fall off. While the scraper 22 scrapes the filter cake, the roller 26 cuts the surface of the filter cake, breaks the filter cake and makes it fall off. Since the roller 26 is rotatable, the roller 26 can be closer to the filter cloth than the scraper blade 30 without damaging the filter cloth.

[0021] The scraper 22 can make the roller 26 move up and down and rotate left and right for many times, and finally the filter cake can be completely unloaded. The whole working process is fully automatic through the program, and no manual intervention is required. The advantages of the present invention are: compact structure, good rigidity, large torque during unloading, and filter cake can be automatically removed.

[0022] like Figure 5 and Figure 6As shown, the present invention further includes a sliding mounting sleeve 32 on the machine cover 4, a feeding tube 29 is slidably arranged in the sliding mounting sleeve 32, a slot is arranged on one side of the sliding mounting sleeve 32, a portion of the feeding tube 29 extends out of the slot to be fixedly connected with a reciprocating plate 33, a bracket 35 for linearly slidably mounting the reciprocating plate 33 is arranged on the machine cover 4, the bracket 35 drives the reciprocating plate 33 to move through a screw assembly 34, a driven gear 36 is fixedly arranged on the bottom end of the screw assembly 34, a follow-up motor 38 is arranged on the machine cover 4, the rotation speed of the follow-up motor 38 is the same as that of the motor 10, and a driving gear 37 meshing with the driven gear 36 is fixedly arranged on the output shaft of the follow-up motor 38.

[0023] The present invention achieves synchronous rotation of the follower motor 38 and the motor 10, that is, when the drum 3 rotates one circle, the driving gear 37 rotates one circle, and one rotation of the driving gear 37 can cause the driven gear 36 to rotate a distance of one gear, thereby allowing the screw of the screw assembly 34 to rotate a preset angle, thereby ensuring that the screw of the screw assembly 34 is lifted and lowered by a preset amplitude, so that the feeding pipe 29 can be lifted and lowered vertically, so that the material can be evenly sprayed on the drum 3 to form a filter cake with a relatively uniform thickness, which can improve the filtration efficiency and avoid the problem that the filter cake is easily blocked in the area with too thick filter cake and the filtration effect is poor.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical bottom discharge centrifuge, characterized in that: The invention comprises a casing (1), a cover (4) is fixedly mounted on the top of the casing (1), a bearing seat frame (2) is fixedly mounted on the bottom of the casing (1), a base (17) is fixedly mounted on the bottom end of the bearing seat frame (2), a rotating drum (3) is rotatably mounted in the casing (1), a feeding pipe (29) is arranged on one side of the casing (4), a scraper device (5) is arranged on the other side of the casing (4), the scraper device (5) comprises a main body, the main body is fixedly mounted on the outer edge of the corresponding side of the casing (4), a second oil cylinder (21) is arranged on the top of the main body, a first oil cylinder (20) is arranged on the outer side of the main body, a scraper lifting shaft (6) is penetrated by the main body, and a hole (24) is opened on the axis of the scraper lifting shaft (6).

2. A vertical bottom discharge centrifuge according to claim 1, characterized in that: A shock absorber (18) is fixedly mounted on the bottom end of the machine base (17).

3. A vertical bottom discharge centrifuge according to claim 1, characterized in that: It also includes a motor (10) fixed in position relative to the bearing seat frame (2), wherein a driving pulley (11) is fixedly mounted on the output shaft of the motor (10); The bottom end of the rotating drum (3) is fixedly connected to a main shaft (8), a through groove for the main shaft (8) is provided at the center of the bearing seat frame (2), an annular protrusion is formed around the through groove, a bearing bushing (7) is fixedly installed on the inner wall of the annular protrusion, the main shaft (8) is connected to the bearing bushing (7) via a bearing (13), the bottom end of the main shaft (8) extends to the outside of the bearing seat frame (2) and is fixedly installed with a driven pulley (9), a belt drive connection is established between the driving pulley (11) and the driven pulley (9), a pressure cover (15) is fixedly installed on the top end of the annular protrusion, a sleeve (14) for mounting the bearing (13) is fixedly provided on the main shaft (8), and a sealing ring (16) in a forced state is embedded in the gap between the pressure cover (15) and the sleeve (14).

4. A vertical bottom discharge centrifuge according to claim 1, characterized in that: A collecting hopper (12) is fixedly mounted on the bottom end of the machine base (17).

5. A vertical bottom discharge centrifuge according to claim 1, characterized in that: A water outlet (19) is provided on one side of the bottom of the bearing seat frame (2), and an annular slope is fixedly installed on the bottom of the bearing seat frame (2) corresponding to the gap between the casing (1) and the drum (3).

6. A vertical bottom discharge centrifuge according to claim 3, characterized in that: A through hole (23) is provided at the axis of the scraper lifting shaft (6), a scraper sleeve (31) is fixedly mounted at the bottom end of the scraper lifting shaft (6), a nozzle (25) is fixedly mounted at the outer end of the scraper sleeve (31), a roller seat (27) is fixedly mounted on one side of the outer end of the scraper sleeve (31) through an elastic steel plate (28), a roller (26) is rotatably mounted on the roller seat (27), a scraper (22) is fixedly mounted on the scraper sleeve (31), the main body of the scraper sleeve (31) is in the shape of a rod, and a hole (24) is provided at the rotation axis of the rod-shaped part of the scraper sleeve (31) to connect the through hole (23) and the nozzle (25); The oil cylinder 1 (20) is used to make the scraper (22) rise and fall vertically, and the oil cylinder 2 (21) is used to make the scraper (22) rotate horizontally.

7. A vertical bottom discharge centrifuge according to claim 6, characterized in that: The machine cover (4) is provided with a sliding mounting sleeve (32), the feeding pipe (29) is slidably mounted in the sliding mounting sleeve (32), one side of the sliding mounting sleeve (32) is provided with a slot, a portion of the feeding pipe (29) extends outside the slot to be fixedly connected to a reciprocating plate (33), the machine cover (4) is provided with a bracket (35) for linearly slidably mounting the reciprocating plate (33), the bracket (35) drives the reciprocating plate (33) to move via a screw assembly (34), a bottom end fixed sleeve of the screw assembly (34) is provided with a driven gear (36), the machine cover (4) is provided with a follower motor (38), the rotation speed of the follower motor (38) is the same as that of the motor (10), and a driving gear (37) meshing with the driven gear (36) is fixedly mounted on the output shaft of the follower motor (38).

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