Adjustable overflow device of horizontal screw centrifuge

Abstract

The utility model relates to the technical field of horizontal screw centrifugal machines, and discloses an adjustable overflow device of a horizontal screw centrifugal machine, which comprises a rotary drum cover and an overflow hole, the overflow hole is arranged on the rotary drum cover, a bearing seat is fixedly arranged on the front side of the rotary drum cover through a screw, a sealing bearing is fixedly arranged on the inner side of the bearing seat, and the sealing bearing is arranged on the rotary drum cover. A rotating cylinder is fixedly mounted on an inner ring of the sealing bearing, five through holes are formed in the front face of the rotating cylinder, the distances between the five through holes and the center of the rotating cylinder are different, a mounting piece is welded to the front face of the rotating drum cover, a bearing seat is arranged to be used for mounting the sealing bearing, and then the rotating cylinder is mounted. The rotating cylinder can rotate relative to the rotary drum cover, five through holes in different positions in the rotating cylinder are used as a structure for adjusting the overflow radius, the mounting piece is arranged for mounting the sealing ring, and waterproof sealing is conducted on the inner side of the rotating cylinder through the sealing ring so that liquid can be prevented from flowing out of a gap between the rotating cylinder and the rotary drum cover.

Description

Technical Field

[0001] This utility model relates to the field of horizontal screw centrifuge technology, specifically to an adjustable overflow device for a horizontal screw centrifuge. Background Technology

[0002] Horizontal screw centrifuges are widely used in various industrial fields, and the performance requirements for them are constantly increasing. The structure of the overflow device directly affects the operability and separation performance of the centrifuge, thus requiring high standards for its design. Currently, the overflow device design for horizontal screw centrifuges mainly uses a crescent-shaped overflow plate. Adjusting the overflow radius requires loosening screws and replacing the overflow plate with one of different specifications. The main drawback of this design is that each centrifuge requires multiple overflow plates of different specifications for adjusting the separation effect, making adjustments cumbersome and costly. Some manufacturers choose to use adjustable overflow plates to adjust the overflow radius, mainly through combinations of multiple overflow plates or by adjusting the height of the overflow plates. Both methods suffer from poor sealing between the overflow plate and the drum cover. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable overflow device for a horizontal screw centrifuge to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable overflow device for a horizontal screw centrifuge, comprising a drum cover and an overflow hole. The overflow hole is opened on the drum cover. A bearing seat is fixedly installed on the front side of the drum cover by screws. A sealed bearing is fixedly installed on the inner side of the bearing seat. A rotating cylinder is fixedly installed on the inner ring of the sealed bearing. Five through holes are opened on the front side of the rotating cylinder, and the five through holes are at different distances from the center of the rotating cylinder. An mounting plate is welded to the front side of the drum cover. A sealing ring is fixedly installed on the front side of the mounting plate. The outer side of the sealing ring is in contact with the inner wall of the rotating cylinder.

[0005] Furthermore, a positioning plate is fixedly installed on the outer wall of the rotating cylinder. Five positioning plates are provided, each corresponding to one of the five through holes. Positioning holes are opened on the outer wall of the positioning plate.

[0006] Furthermore, an opening mark is fixedly provided on the front side of the positioning plate, and the opening mark corresponds to the opening of the corresponding through hole of the positioning plate.

[0007] Furthermore, a rotation auxiliary ring is fixedly installed on the front side of the rotating cylinder, and the front side of the rotation auxiliary ring is provided with anti-slip texture. The rotation auxiliary ring is offset from the through hole.

[0008] Furthermore, both the overflow hole and the through hole are crescent-shaped holes, and the inner diameter of the overflow hole is larger than the inner diameter of the through hole.

[0009] Furthermore, a smooth collar is rotatably sleeved on the outer wall of the mounting plate, and the outer surface of the smooth collar contacts the inner wall of the rotating cylinder.

[0010] Furthermore, an internal threaded seat is fixedly installed on the front of the drum cover, and a fastening screw is threadedly connected to the inner wall of the internal threaded seat, the fastening screw passing through the positioning hole.

[0011] Furthermore, an elastic telescopic rod is fixedly installed on the front of the drum cover, and the telescopic end of the elastic telescopic rod is inserted into the positioning hole.

[0012] Furthermore, a pressing plate is fixedly sleeved on the outer wall of the telescopic end of the elastic telescopic rod, and a pressing protrusion is fixedly installed on the front side of the pressing plate, with the pressing protrusion close to the left and right ends of the pressing plate.

[0013] Furthermore, the elastic telescopic rod includes a fixed cylinder, which is fixedly installed on the front of the drum cover. A sliding plate is slidably provided on the inner wall of the fixed cylinder. A spring is fixedly installed on the back of the sliding plate. The rear end of the spring is fixedly connected to the inner wall of the fixed cylinder. An extension rod is fixedly installed on the front of the sliding plate. The extension rod movably passes through the inner wall of the fixed cylinder. The extension rod is the telescopic end of the elastic telescopic rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. A bearing housing is provided for installing a sealed bearing, and then a rotating cylinder is installed, so that the rotating cylinder can rotate relative to the drum cover. Five through holes at different positions on the rotating cylinder are used as a structure to adjust the overflow radius. An installation plate is provided for installing a sealing ring. The sealing ring provides a waterproof seal on the inside of the rotating cylinder to prevent liquid from flowing out from the gap between the rotating cylinder and the drum cover.

[0016] 2. By rotating the rotating cylinder, one of the through holes is aligned with the overflow hole. At this time, the overflow radius is determined by the size of the overlapping part between the through hole and the overflow hole. Since the positions of the five through holes are different, the size of the overlapping part with the overflow hole is also different, thus realizing the adjustment of the overflow radius. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 A structural schematic diagram of the right-side sectional view;

[0019] Figure 3This utility model Figure 1 A structural schematic diagram of a partially exploded view;

[0020] Figure 4 This is a schematic diagram of the internal thread seat and fastening screw of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the elastic telescopic rod and the pressing plate of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the exploded view of the elastic telescopic rod of this utility model.

[0023] In the diagram: 1. Drum cover; 2. Overflow hole; 3. Bearing seat; 4. Sealed bearing; 5. Rotating cylinder; 6. Through hole; 7. Mounting plate; 8. Smooth collar; 9. Sealing ring; 10. Positioning plate; 11. Positioning hole; 12. Opening degree mark; 13. Rotation auxiliary ring; 14. Internal thread seat; 15. Fastening screw; 16. Elastic telescopic rod; 1601. Fixed cylinder; 1602. Spring; 1603. Slide plate; 1604. Extending rod; 17. Pressing plate; 18. Pressing protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-Figure 4This utility model provides a technical solution: an adjustable overflow device for a horizontal screw centrifuge, including a drum cover 1 and an overflow hole 2. The overflow hole 2 is opened on the drum cover 1. A bearing seat 3 is fixedly installed on the front of the drum cover 1 by screws. A sealing bearing 4 is fixedly installed on the inner side of the bearing seat 3. A rotating cylinder 5 is fixedly installed on the inner ring of the sealing bearing 4. A through hole 6 is opened on the front of the rotating cylinder 5. There are five through holes 6, and the five through holes 6 are at different distances from the center of the rotating cylinder 5. A mounting plate 7 is welded to the front of the drum cover 1. A sealing ring 9 is fixedly installed on the front of the mounting plate 7. The outer side of the sealing ring 9 fits against the inner wall of the rotating cylinder 5. The bearing seat 3 is provided for installing the sealing ring. Bearing 4 is installed, and then rotating cylinder 5 is installed so that rotating cylinder 5 can rotate relative to drum cover 1. Five through holes 6 at different positions on rotating cylinder 5 are used as the structure for adjusting overflow radius. By rotating rotating cylinder 5, one of the through holes 6 is aligned with overflow hole 2. At this time, overflow radius is determined by the size of the overlapping part of the through hole 6 and overflow hole 2. Because the positions of the five through holes 6 are different, the size of the overlapping part with overflow hole 2 is also different, thus realizing the adjustment of overflow radius. Mounting plate 7 is set to install sealing ring 9. The sealing ring 9 provides waterproof sealing on the inside of rotating cylinder 5 to prevent liquid from flowing out from the gap between rotating cylinder 5 and drum cover 1.

[0027] A positioning plate 10 is fixedly installed on the outer wall of the rotating cylinder 5. There are five positioning plates 10, which correspond one-to-one with the five through holes 6. The outer wall of the positioning plate 10 is provided with positioning holes 11. The positioning plate 10 is set to help the user locate the center of the corresponding through hole 6, so that the user can easily judge whether the through hole 6 is aligned with the overflow hole 2. The positioning holes 11 are used to insert a fixing structure after the through hole 6 is aligned with the overflow hole 2 to fix the positioning plate 10, thereby fixing the rotating cylinder 5 and preventing the rotating cylinder 5 from rotating during the overflow process.

[0028] An opening mark 12 is fixedly provided on the front of the positioning plate 10. The opening mark 12 corresponds to the opening of the corresponding through hole 6 of the positioning plate 10. The opening mark 12 is provided to help the user judge the overflow opening at this time.

[0029] A rotating auxiliary ring 13 is fixedly installed on the front of the rotating cylinder 5. The front of the rotating auxiliary ring 13 is provided with anti-slip texture. The rotating auxiliary ring 13 is offset from the through hole 6. The rotating auxiliary ring 13 is set to assist the user in rotating the rotating cylinder 5.

[0030] Both overflow hole 2 and through hole 6 are crescent-shaped holes. The inner diameter of overflow hole 2 is larger than the inner diameter of through hole 6 to avoid the problem that there is no overlap between through hole 6 and overflow hole 2.

[0031] The outer wall of the mounting plate 7 is fitted with a smooth collar 8. The outer side of the smooth collar 8 contacts the inner wall of the rotating cylinder 5. The smooth collar 8 can provide some support for the sealing ring 9 and prevent the mounting plate 7 from directly rubbing against the inner wall of the rotating cylinder 5.

[0032] An internal threaded seat 14 is fixedly installed on the front of the drum cover 1. A fastening screw 15 is threaded onto the inner wall of the internal threaded seat 14. The fastening screw 15 passes through the positioning hole 11. After the through hole 6 is aligned with the overflow hole 2, the positioning plate 10 is fixed by passing the fastening screw 15 through the positioning hole 11 and screwing it into the internal threaded seat 14, thereby fixing the rotating cylinder 5.

[0033] Working principle: When adjusting the overflow radius, use a tool to unscrew the fastening screw 15, then rotate the auxiliary ring 13 to drive the rotating cylinder 5 to rotate. After the corresponding opening of the through hole 6 is aligned with the overflow hole 2, screw the fastening screw 15 into the internal thread seat 14 to fix the positioning plate 10, and then fix the rotating cylinder 5. The liquid overflowing from the overflow hole 2 will enter the rotating cylinder 5. At this time, the through hole 6 at the bottom is aligned with the overflow hole 2, and the fluid flows out from the corresponding through hole 6, thereby adjusting the overflow radius.

[0034] Example 2

[0035] Please see Figures 1-3 , Figure 5 and Figure 6 This utility model provides a technical solution: an adjustable overflow device for a horizontal screw centrifuge, including a drum cover 1 and an overflow hole 2. The overflow hole 2 is opened on the drum cover 1. A bearing seat 3 is fixedly installed on the front of the drum cover 1 by screws. A sealing bearing 4 is fixedly installed on the inner side of the bearing seat 3. A rotating cylinder 5 is fixedly installed on the inner ring of the sealing bearing 4. A through hole 6 is opened on the front of the rotating cylinder 5. There are five through holes 6, and the five through holes 6 are at different distances from the center of the rotating cylinder 5. A mounting plate 7 is welded to the front of the drum cover 1. A sealing ring 9 is fixedly installed on the front of the mounting plate 7. The outer side of the sealing ring 9 fits against the inner wall of the rotating cylinder 5. The bearing seat 3 is provided for installing the sealing ring. Bearing 4 is installed, and then rotating cylinder 5 is installed so that rotating cylinder 5 can rotate relative to drum cover 1. Five through holes 6 at different positions on rotating cylinder 5 are used as the structure for adjusting overflow radius. By rotating rotating cylinder 5, one of the through holes 6 is aligned with overflow hole 2. At this time, overflow radius is determined by the size of the overlapping part of the through hole 6 and overflow hole 2. Because the positions of the five through holes 6 are different, the size of the overlapping part with overflow hole 2 is also different, thus realizing the adjustment of overflow radius. Mounting plate 7 is set to install sealing ring 9. The sealing ring 9 provides waterproof sealing on the inside of rotating cylinder 5 to prevent liquid from flowing out from the gap between rotating cylinder 5 and drum cover 1.

[0036] A positioning plate 10 is fixedly installed on the outer wall of the rotating cylinder 5. There are five positioning plates 10, which correspond one-to-one with the five through holes 6. The outer wall of the positioning plate 10 is provided with positioning holes 11. The positioning plate 10 is set to help the user locate the center of the corresponding through hole 6, so that the user can easily judge whether the through hole 6 is aligned with the overflow hole 2. The positioning holes 11 are used to insert a fixing structure after the through hole 6 is aligned with the overflow hole 2 to fix the positioning plate 10, thereby fixing the rotating cylinder 5 and preventing the rotating cylinder 5 from rotating during the overflow process.

[0037] An opening mark 12 is fixedly provided on the front of the positioning plate 10. The opening mark 12 corresponds to the opening of the corresponding through hole 6 of the positioning plate 10. The opening mark 12 is provided to help the user judge the overflow opening at this time.

[0038] A rotating auxiliary ring 13 is fixedly installed on the front of the rotating cylinder 5. The front of the rotating auxiliary ring 13 is provided with anti-slip texture. The rotating auxiliary ring 13 is offset from the through hole 6. The rotating auxiliary ring 13 is set to assist the user in rotating the rotating cylinder 5.

[0039] Both overflow hole 2 and through hole 6 are crescent-shaped holes. The inner diameter of overflow hole 2 is larger than the inner diameter of through hole 6 to avoid the problem that there is no overlap between through hole 6 and overflow hole 2.

[0040] The outer wall of the mounting plate 7 is fitted with a smooth collar 8. The outer side of the smooth collar 8 contacts the inner wall of the rotating cylinder 5. The smooth collar 8 can provide some support for the sealing ring 9 and prevent the mounting plate 7 from directly rubbing against the inner wall of the rotating cylinder 5.

[0041] An elastic telescopic rod 16 is fixedly installed on the front of the drum cover 1. The telescopic end of the elastic telescopic rod 16 is inserted into the positioning hole 11. When fixing the rotating cylinder 5, the telescopic end of the elastic telescopic rod 16 is inserted into the positioning hole 11. When it is necessary to rotate the rotating cylinder 5, simply press the telescopic end of the elastic telescopic rod 16 to disengage it from the positioning hole 11, and the rotating cylinder 5 can be rotated without the need for additional tools.

[0042] A pressing plate 17 is fixedly sleeved on the outer wall of the telescopic end of the elastic telescopic rod 16. A pressing protrusion 18 is fixedly installed on the front of the pressing plate 17. The pressing protrusion 18 is close to the left and right ends of the pressing plate 17. The pressing plate 17 is set to install the pressing protrusion 18. The pressing protrusion 18 makes it convenient for the user to press the pressing plate 17, thereby pressing the telescopic end of the elastic telescopic rod 16, and avoiding the positioning plate 10 from hindering the user from installing the telescopic end of the elastic telescopic rod 16.

[0043] The elastic telescopic rod 16 includes a fixed cylinder 1601, which is fixedly installed on the front of the drum cover 1. A sliding plate 1603 is slidably disposed on the inner wall of the fixed cylinder 1601. A spring 1602 is fixedly installed on the back of the sliding plate 1603. The rear end of the spring 1602 is fixedly connected to the inner wall of the fixed cylinder 1601. An extension rod 1604 is fixedly installed on the front of the sliding plate 1603. The extension rod 1604 movably passes through the inner wall of the fixed cylinder 1601 and is the telescopic end of the elastic telescopic rod 16. The fixed cylinder 1601 is used to install the spring 1602. The elasticity of the spring 1602 allows the sliding plate 1603 to slide inside the fixed cylinder 1601, thereby allowing the extension rod 1604 to extend and retract relative to the fixed cylinder 1601.

[0044] Working principle: When using the rotating cylinder 5, press the pressing protrusion 18 to move the pressing plate 17 towards the drum cover 1, which in turn moves the extension rod 1604 towards the drum cover 1, causing the extension rod 1604 to disengage from the positioning hole 11, and then the rotating cylinder 5 can be rotated. After the rotation is completed, release the pressing protrusion 18. At this time, the spring 1602 pushes the sliding plate 1603 forward, which in turn moves the extension rod 1604 forward, so that the extension rod 1604 is inserted into the corresponding positioning hole 11.

[0045] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. An adjustable overflow device for a horizontal decanter centrifuge, comprising a drum cover (1) and an overflow hole (2), characterized in that: The overflow hole (2) is opened on the drum cover (1). The front of the drum cover (1) is fixedly installed with a bearing seat (3) by screws. The inner side of the bearing seat (3) is fixedly installed with a sealing bearing (4). The inner ring of the sealing bearing (4) is fixedly installed with a rotating cylinder (5). The front of the rotating cylinder (5) is provided with a through hole (6). There are five through holes (6), and the distances of the five through holes (6) from the center of the rotating cylinder (5) are different. The front of the drum cover (1) is welded with a mounting piece (7). The front of the mounting piece (7) is fixedly installed with a sealing ring (9). The outer side of the sealing ring (9) is in contact with the inner wall of the rotating cylinder (5).

2. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: The outer wall of the rotating cylinder (5) is fixedly installed with a positioning plate (10). There are five positioning plates (10), which correspond one-to-one with five through holes (6). The outer wall of the positioning plate (10) is provided with positioning holes (11).

3. The adjustable overflow device for a horizontal screw centrifuge according to claim 2, characterized in that: The front of the positioning plate (10) is fixedly provided with an opening mark (12), and the opening mark (12) corresponds to the opening of the corresponding through hole (6) of the positioning plate (10).

4. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: A rotating auxiliary ring (13) is fixedly installed on the front of the rotating cylinder (5). The front of the rotating auxiliary ring (13) is provided with anti-slip texture. The rotating auxiliary ring (13) is offset from the through hole (6).

5. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: Both the overflow hole (2) and the through hole (6) are crescent-shaped holes, and the inner diameter of the overflow hole (2) is larger than the inner diameter of the through hole (6).

6. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: The outer wall of the mounting plate (7) is fitted with a smooth collar (8), and the outer side of the smooth collar (8) contacts the inner wall of the rotating cylinder (5).

7. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: An internal threaded seat (14) is fixedly installed on the front of the drum cover (1), and a fastening screw (15) is threadedly connected to the inner wall of the internal threaded seat (14). The fastening screw (15) passes through the positioning hole (11).

8. The adjustable overflow device for a horizontal screw centrifuge according to claim 1, characterized in that: An elastic telescopic rod (16) is fixedly installed on the front of the drum cover (1), and the telescopic end of the elastic telescopic rod (16) is inserted into the positioning hole (11).

9. The adjustable overflow device for a horizontal screw centrifuge according to claim 8, characterized in that: The outer wall of the telescopic end of the elastic telescopic rod (16) is fixedly fitted with a pressing piece (17), and a pressing protrusion (18) is fixedly installed on the front side of the pressing piece (17). The pressing protrusion (18) is close to the left and right ends of the pressing piece (17).

10. The adjustable overflow device for a horizontal screw centrifuge according to claim 8, characterized in that: The elastic telescopic rod (16) includes a fixed cylinder (1601), which is fixedly installed on the front of the drum cover (1). A sliding plate (1603) is slidably provided on the inner wall of the fixed cylinder (1601). A spring (1602) is fixedly installed on the back of the sliding plate (1603). The rear end of the spring (1602) is fixedly connected to the inner wall of the fixed cylinder (1601). An extension rod (1604) is fixedly installed on the front of the sliding plate (1603). The extension rod (1604) moves through the inner wall of the fixed cylinder (1601) and is the telescopic end of the elastic telescopic rod (16).

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