Fastening device for filter bag of centrifugal machine
By designing guide plates, support sliders, and synchronous scaling mechanisms, the problems of complex and damaged centrifuge filter bag fastening operations have been solved, achieving efficient and uniform filter bag fastening and reducing resource waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-17
AI Technical Summary
Existing centrifuge filter bag fastening methods are complex to operate, inefficient, and prone to damage, making the filter bags non-reusable and wasting resources.
The filter bag is uniformly tightened by using a guide plate, support slider and synchronous scaling mechanism, combined with rubber pads and lifting drive assembly. The synchronous tightening of screw, slide bar and scissor bar ensures uniform pressure on the surface of the filter bag.
It achieves efficient and uniform fastening of filter bags, reduces the risk of filter bag breakage, improves reliability, supports reuse, and reduces resource waste.
Smart Images
Figure CN223996317U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of centrifuge filter bag fixing technology, specifically referring to a fastening device for centrifuge filter bags. Background Technology
[0002] Centrifuge filter bags are used to separate liquids from solid particles or liquids from impurities by using centrifugal force. They are widely used in the chemical industry. If the filter bag breaks during use, the serious leakage will have unimaginable consequences.
[0003] Existing filter bag fixing methods mostly rely on a special sealing structure at the top of the filter bag to fit over the discharge end of the centrifuge, and then use wires, cable ties, etc. to secure it. This method not only requires manual tightening with pliers, which is inefficient, but also the wires, cable ties, and other thin objects can easily tear the filter bag at the connection point during continuous operation, thus affecting the filter bag's filtration performance. In particular, the wires, cable ties, etc., cannot be reused, which is quite wasteful. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a fastening device for centrifuge filter bags, which effectively solves the problems of complex operation and low efficiency of the current centrifuge filter bag fastening methods, and also solves the problems of easy damage to filter bags and non-reusability and waste.
[0005] The technical solution adopted by this utility model is as follows: The centrifuge filter bag fastening device proposed by this utility model includes a guide guard plate and a support slider evenly and alternately distributed along a ring. The support slider is slidably connected to the guide guard plate, and a rubber pad is fixed on the inner side wall of the support slider. A fixing column is fixed at the upper end of the outer wall of the guide guard plate, and a synchronous scaling mechanism is provided at the lower end of the fixing column. The fixing columns are connected to each other through the synchronous scaling mechanism. The synchronous scaling mechanism consists of a screw, a slide bar, and a scissor bar. The slide bar is evenly distributed on both sides of the screw along a ring, and both the screw and the slide bar are located at the lower end of the fixing column. The upper ends of both sides of the scissor bar are rotatably connected to two adjacent sets of fixing columns. At the same time, a lifting drive assembly is connected to the lower ends of both sides of the fixing column, and the lifting drive assembly is located on the screw and the slide bar.
[0006] As an improvement to this solution, the lifting drive assembly includes a slip ring slidably connected to the slide rod and a rotating ring sleeved on the screw rod. Both sides of the slip ring and the rotating ring are rotatably connected to the bottom of the scissor fork rods on both sides. A drive ring is rotatably connected inside the rotating ring, and the drive ring is threadedly connected to the screw rod.
[0007] As an improvement to this solution, two symmetrical guide grooves are distributed at both the upper and lower ends of the guide guard plate. A limiting guide rod is slidably connected in the guide groove, and the bottom of the limiting guide rod is fixed to the support slider.
[0008] As an improvement to this solution, an L-shaped hook is fixed to the center of the fixed column, and a limit block is fixed to the bottom of both the screw and the slide rod.
[0009] As an improvement to this solution, the guide plate has a U-shaped cross-section and an overall arc shape, the support slider is an arc-shaped plate, and the support slider and the guide plate are coaxial.
[0010] As an improvement to this solution, both the slip ring and the rotating ring are arranged in the form of O-rings. The outer wall of the drive ring has a recessed groove, and the rotating ring is fitted into the groove. Furthermore, the outer edge of the top of the drive ring is evenly distributed with several anti-slip grooves.
[0011] The beneficial effects of this utility model by adopting the above structure are as follows:
[0012] 1. The overall structure adopts a radially expandable design, which can be reused to reduce waste. It is also equipped with multiple sets of rubber pads to evenly compress the circumference of the filter bag opening, avoiding uneven pressure that can cause easy breakage and improving the reliability of the filter bag.
[0013] 2. It is equipped with a synchronous scaling mechanism and a lifting drive assembly. Through the extension and retraction of a set of scissor bars, multiple sets of rubber pads can be tightened synchronously. The operation is simple and ensures that each set of rubber pads can tighten inward synchronously, which further improves the uniformity of pressure applied to the surface of the filter bag during tightening. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a centrifuge filter bag fastening device proposed in this utility model;
[0015] Figure 2 This is a partial cross-sectional view of a centrifuge filter bag fastening device proposed in this utility model;
[0016] Figure 3 This is a partial structural diagram of the synchronous scaling mechanism component in this embodiment;
[0017] Figure 4 This is an exploded view of the synchronous scaling mechanism and lifting drive assembly in this embodiment.
[0018] The components include: 1. Guide guard plate; 2. Support slider; 3. Rubber pad; 4. Fixed column; 5. Synchronous scaling mechanism; 6. Screw; 7. Slide rod; 8. Scissor bar; 9. Lifting drive assembly; 10. Slip ring; 11. Rotary ring; 12. Drive ring; 13. Guide groove; 14. Limiting guide rod; 15. Hook; 16. Limiting block.
[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation
[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention proposes a fastening device for a centrifuge filter bag, comprising a guide plate 1 and a support slider 2 evenly and alternately distributed in a ring. The guide plate 1 has a U-shaped cross section and an overall arc shape. The support slider 2 is an arc-shaped plate and is coaxial with the guide plate 1. The support slider 2 is slidably connected to the guide plate 1, and a rubber pad 3 is fixed on the inner side wall of the support slider 2. A fixing post 4 is fixed at the upper end of the outer wall of the guide plate 1, and a synchronous scaling mechanism 5 is provided at the lower end of the fixing post 4. The fixing posts 4 are connected to each other through the synchronous scaling mechanism 5.
[0022] By using the ring-shaped support slider 2 and the rubber pad 3 glued to it, pressure can be applied evenly in the circumferential direction to the filter bag opening and the centrifuge discharge end to tighten it, avoiding the problem of easy breakage during use caused by uneven pressure.
[0023] like Figure 2 , Figure 3 and Figure 4 As shown, the synchronous scaling mechanism 5 consists of a screw 6, a slide bar 7, and a scissor bar 8. The slide bar 7 is evenly distributed on both sides of the screw 6 along a circular ring, and both the screw 6 and the slide bar 7 are located at the lower end of the fixed column 4. The upper ends of both sides of the scissor bar 8 are rotatably connected to two adjacent sets of fixed columns 4. At the same time, the lower ends of both sides of the fixed column 4 are connected to a lifting drive assembly 9, and the lifting drive assembly 9 is located on the screw 6 and the slide bar 7.
[0024] By connecting the scissor bar 8 with the screw bar 6 and the slide bar 7 and arranging them at intervals, each set of guide plates 1 can be tightened inwards synchronously, thereby making the inner support slider 2 and rubber pad 3 secure the filter bag and the centrifuge discharge end.
[0025] like Figure 2 and Figure 3As shown, in order to drive the synchronous scaling mechanism 5, the lifting drive assembly 9 includes a slip ring 10 slidably connected to the slide rod 7 and a rotating ring 11 sleeved on the screw rod 6. Both sides of the slip ring 10 and the rotating ring 11 are rotatably connected to the bottom of the scissor fork rods 8 on both sides. A drive ring 12 is rotatably connected inside the rotating ring 11, and the drive ring 12 is threadedly connected to the screw rod 6. Both the slip ring 10 and the rotating ring 11 are set in the form of O-rings. The outer wall of the drive ring 12 has a groove recessed around its perimeter, and the rotating ring 11 is sleeved in the groove. Several anti-slip grooves are evenly distributed on the outer edge of the top of the drive ring 12.
[0026] like Figure 3 and Figure 4 As shown, the guide plate 1 has two symmetrical guide grooves 13 distributed at both the upper and lower ends. The guide grooves 13 are slidably connected to the limit guide rods 14, and the bottom of the limit guide rods 14 is fixed to the support slider 2.
[0027] The guide groove 13 and the limiting guide rod 14 ensure that the supporting slider 2 slides along the inner wall of the guide guard plate 1.
[0028] like Figure 1 and Figure 2 As shown, an L-shaped hook 15 is fixed to the center of the fixed column 4, and a limit block 16 is fixed to the bottom of both the screw 6 and the slide bar 7;
[0029] The L-shaped hook 15 can be used to help fix the filter bag, and the limiting block 16 can be used to prevent the drive ring 12 from slipping off.
[0030] In practical use, the top of the filter bag is passed through the center of the fastening device and placed on the discharge end of the centrifuge. The drive ring 12 is rotated via the anti-slip groove on its upper end, causing it to move downwards along the axis of the screw 6, driving the rotating ring 11 to move. As the rotating ring 11 moves downwards, the distance between it and the corresponding fixed post 4 increases. One end of the scissor bar 8, rotatably connected to it, moves with the rotating ring 11, thus increasing the angle at which the scissor bar 8 separates on the same side. This, in turn, causes the other side to push the slip ring 10 to separate from its corresponding fixed post 4, achieving phase separation. The adjacent screws 6 and slide bars 7 move closer together, and so on, so that each set of screws 6 and slide bars 7 moves closer and tightens synchronously. At the same time, the support slider 2 slides along the guide plate 1 under the limit of the limit guide rod 14, so that the support slider 2 tightens towards the middle to press the filter bag against the outer wall of the centrifuge discharge port, and is pre-tightened by the rubber pad 3 to prevent slippage. Then, the opening of the filter bag is turned outward so that the round hole on the surface of the filter bag opening is fitted onto the hook 15. The above is the entire process of using the centrifuge filter bag fastening device.
[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A fastening device for centrifuge filter bags, comprising guide guards (1) and support sliders (2) uniformly and alternately distributed along a ring, characterized in that: The support sliding block (2) is slidingly connected to the guide guard plate (1), and a rubber pad (3) is fixed to the inner vertical wall of the support sliding block (2); The outer wall of the guide guard plate (1) is fixed with a fixed column (4) at the upper end, the lower end of the fixed column (4) is provided with a synchronous zoom mechanism (5), and the fixed columns (4) are connected through the synchronous zoom mechanism (5); The synchronous zoom mechanism (5) is composed of a screw rod (6), a sliding rod (7) and a scissor lever (8), the sliding rod (7) is uniformly distributed on both sides of the screw rod (6) along the circular ring, and the screw rod (6) and the sliding rod (7) are arranged at the lower end of the fixed column (4), the upper ends of the two sides of the scissor lever (8) are rotatably connected to the two adjacent groups of fixed columns (4), meanwhile, the lower ends of the two sides of the fixed column (4) are connected with a lifting driving assembly (9), and the lifting driving assembly (9) is arranged on the screw rod (6) and the sliding rod (7).
2. A fastening arrangement for a filter bag of a centrifuge according to claim 1, characterized in that: The lifting driving assembly (9) includes a sliding ring (10) slidingly connected to the sliding rod (7) and a rotating ring (11) sleeved on the screw rod (6), and the two sides of the sliding ring (10) and the rotating ring (11) are rotatably connected with the bottoms of the two scissor levers (8), the rotating ring (11) is rotatably connected with a driving ring (12), and the driving ring (12) is threadedly connected to the screw rod (6).
3. A fastening arrangement for a filter bag of a centrifuge according to claim 1, characterized in that: The guide guard plate (1) is provided with two symmetrical guide sliding grooves (13) at the upper and lower ends, the guide sliding grooves (13) are slidingly connected with limiting guide rods (14), and the bottoms of the limiting guide rods (14) are fixed to the support sliding block (2).
4. A fastening arrangement for a filter bag of a centrifuge according to claim 1 or 2, characterised in that: The center of the fixed column (4) is fixed with an L-shaped hook (15), and the bottoms of the screw rod (6) and the sliding rod (7) are fixed with limiting blocks (16).
5. A fastening device for filter bags in a centrifuge according to claim 1, characterized in that: The cross section of the guide guard plate (1) is U-shaped and the whole is arc-shaped, the support sliding block (2) is arc-shaped plate-shaped, and the support sliding block (2) is coaxially arranged with the guide guard plate (1).
6. A fastening arrangement for a filter bag of a centrifuge according to claim 2, characterized in that: The sliding ring (10) and the rotating ring (11) are O-shaped circular rings, the outer wall of the driving ring (12) is recessed with a ring groove, the rotating ring (11) is sleeved in the ring groove, and the top of the driving ring (12) is uniformly provided with a plurality of anti-skid grooves.