Filter cloth fixing device of plate-and-frame filter press
By designing a filter cloth fixing device that uses clamp parts and adjustment rod structures, the problem of easy damage and cumbersome fixing of the filter cloth of the plate and frame filter press is solved, and a more efficient filter cloth replacement and fixing and flattening effect is achieved.
Patent Information
- Application Number
- CN202422210562.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-09
AI Technical Summary
During the fly ash leachate treatment, the filter cloth of the plate and frame filter press is easily damaged due to repeated high pressure action, and the traditional filter cloth fixing method is cumbersome and difficult to operate, resulting in inefficient replacement.
A filter cloth fixing device for a board and frame filter press is designed, and the filter cloth folding edge is clamped through the clamp, and the tension is adjusted using the adjustment rod structure, which simplifies the filter cloth replacement process.
The device improves the efficiency of filter cloth replacement, simplifies operation, reduces the transformation of the filter plate structure, reduces customization costs, and ensures that the filter cloth is straight and flat.
Smart Images
Figure CN223009913U_ABST
Abstract
Description
Technical Field
[0001] The present utility model relates to the technical field of sewage treatment solid-liquid separation equipment, and particularly relates to a filter cloth fixing device for a plate and frame filter press. Background Art
[0002] Fly ash is formed when, during the incineration of domestic waste, some fine ash particles are carried into subsequent equipment, pipelines, and flue gas purification devices by the flue gas. The mixture of small particles collected by the deacidification tower and tiny dust collected by the flue gas purification and dust removal device is collectively referred to as fly ash. Fly ash has a complex composition and needs to be stabilized before it can be landfilled in accordance with the landfill standards for safe landfills or the new landfill standards for domestic waste landfills (GB16889-2008). In the fly ash storage area, there is also leachate that needs to be treated. Leachate is a secondary pollutant generated during the stacking and disposal of waste through extraction, hydrolysis, and fermentation. The process adopted by our company's fly ash leachate treatment system uses a process of redox reaction + filtration + advanced oxidation to remove various heavy metal indicators in the fly ash leachate, such as hexavalent chromium, total chromium, etc., and finally meets the discharge standards of the "Pollution Control Standard for Domestic Waste Landfills" (GB16889-2008).
[0003] The problem with the existing technology is that during the treatment of fly ash leachate, our company uses a plate and frame filter press to dehydrate the surplus sludge, and the dewatered supernatant is returned to the biochemical system. In this process, the filter cloth on the filter plate of the plate and frame filter press is easily damaged due to the repeated action of high pressure. Therefore, the filter cloth needs to be frequently replaced. During the replacement process of the filter cloth, the fixing of the filter cloth needs to ensure both the flatness of the filter cloth and the fixing strength, making the fixing process of the filter cloth rather cumbersome, requiring a large number of fasteners to fix the filter cloth, and the operation is difficult.
[0004] For the fixing of the filter cloth in the existing technology, a number of punching holes are provided around the contour edge of the filter cloth, and the cable ties pass through the punching holes of the filter cloth on both sides of the filter plate one by one and then are tied, so as to be fixed. This traditional method not only requires attention to tying each pair of punching holes, but also when replacing the filter cloth, the cable ties need to be cut, and then tied again after replacement, making the work efficiency of replacing the filter cloth low.
[0005] Therefore, it is necessary to design the connection and fixing structure between the filter cloth and the filter plate to achieve quick fixing, flat fixing, and the ability to be reused repeatedly, so as to optimize the work process of replacing the filter cloth. Summary of the Utility Model
[0006] The present utility model provides a filter cloth fixing device for a plate and frame filter press to solve the above-mentioned technical deficiencies.
[0007] Technical solution of the utility model: A filter cloth fixing device for a plate and frame filter press, comprising filter plates, a pair of filter cloths and a clamp. A pair of ear plates are arranged on the left and right side surfaces of the filter plates. The pair of filter cloths are respectively arranged on the two end surfaces of the filter plates. The pair of filter cloths are both provided with folded edge parts that are folded towards the outer peripheral surface of the filter plates. A plurality of connection holes are arranged on the folded edge parts along the contour direction of the filter cloths. The clamp comprises a groove that is clamped with the upper or lower side surface of the filter plate, and a pair of connecting arms that respectively extend to the pair of ear plates. The pair of connecting arms are detachably fixedly connected to the ear plates, and the clamp is driven to clamp the folded edge parts of the filter cloths with the outer peripheral surface of the filter plate. A hook part that is hooked with each connection hole is arranged in the groove.
[0008] By adopting the above technical solution, the clamp is detachably connected and fixed with the ear plates. During fixation, the hook parts respectively hook the connection holes of the folded edge parts of the filter plates, eliminating the step of separately connecting each connection hole one by one, and improving the efficiency. Moreover, the fixing structure is arranged at the ear plates, reducing the modification of the filter plate structure, enabling various filter plates to be adapted through the ear plates, and reducing the customization cost.
[0009] Further setting of the utility model: The fixing device further comprises an adjusting rod. The clamp is provided with a rotating groove parallel to the folded edge part of the filter cloth. The rotating groove comprises notch openings that penetrate through both sides of the clamp and an opening that penetrates to the folded edge part. The adjusting rod is inserted into the rotating groove, and both ends of the adjusting rod are threadedly connected to the notch openings. On the outer peripheral surface of the rod body of the adjusting rod, a plurality of hook parts are arranged radially corresponding to the positions of the connection holes. The hook parts are tightened with the connection holes of the filter plates as the adjusting rod is screwed tightly.
[0010] By adopting the above technical solution, through the arranged adjusting rod structure, after the clamp clamps the folded edge part of the filter plate, the adjusting rod is rotated to make the hook parts rotate in the direction of tightening the filter cloth, thereby hooking and tightening the filter cloth.
[0011] Further setting of the utility model: The end face of the adjusting rod is provided with an internal hexagonal groove.
[0012] Further setting of the utility model: The fixing device further comprises an anti-loosening rubber plug. The anti-loosening rubber plug comprises a hexagonal column adapted to the internal hexagonal groove and a flange adapted to the notch opening.
[0013] By adopting the above technical solution, after the adjusting rod is screwed tightly, the anti-loosening rubber plug is inserted to increase the friction force between the adjusting rod and the notch opening for anti-loosening.
[0014] Further setting of the utility model: Elastic hooks are arranged on the pair of connecting arms, and clamping grooves are arranged on the ear plates corresponding to the contours of the elastic hooks.
[0015] Further setting of the utility model: Screw holes and screws are correspondingly arranged on the elastic hooks and the clamping grooves.
[0016] With the above technical solution, the elastic catch is set to hook and engage with the ear plate, facilitating the disassembly and fixing operations. When necessary, screw holes and screws can be further set to increase the connection structure.
[0017] The beneficial effects of the present utility model: Through the setting of the clamp member, it replaces the cumbersome steps of bundling with traditional cable ties. By using the quick disassembly and assembly mechanism of the clamp member, the one-step hooking structure with each connection hole of the filter plate, and the adjusting rod structure that can adjust the tension of the filter plate, the operation of replacing the filter plate is simplified, the work efficiency is improved, and the filter cloth can be straightened and flattened. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the structure of the embodiment of the present utility model Figure 1 ;
[0019] Figure 2 is the structure of the embodiment of the present utility model Figure 2 ;
[0020] Figure 3 is the structure of the embodiment of the present utility model Figure 3 ;
[0021] Figure 4 is Figure 3 the exploded view at A in
[0022] Wherein, 1 - filter plate, 2 - filter cloth, 21 - hem part, 22 - connection hole, 3 - clamp member, 31 - groove, 32 - connecting arm, 321 - elastic catch, 33 - rotating groove, 34 - notch, 35 - opening, 4 - ear plate, 41 - card slot, 5 - adjusting rod, 51 - catch part.
[0023] For better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product. In addition, the drawings are only for illustrative purposes and should not be construed as a limitation to this patent. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To make the technical solutions and their advantages of this application clearer, the technical solutions of this application will be further described clearly and completely with reference to the drawings. It can be understood that the specific embodiments described herein are only partial embodiments of this application, which are only used to explain this application and not to limit this application. It should be noted that for the convenience of description, only the parts related to this application are shown in the drawings, and other related parts can refer to the general design. Without conflict, the embodiments and the technical features in the embodiments of this application can be combined with each other to obtain new embodiments.
[0025] The following is a detailed introduction to the present utility model with reference to the drawings. As Figures 1-4 shown,
[0026] A fixing device for the filter cloth 2 of a plate-and-frame filter press, comprising a filter plate 1, a pair of filter cloths 2 and a clamp member 3. A pair of ear plates 4 are provided on the left and right side surfaces of the filter plate 1. The pair of filter cloths 2 are respectively arranged on both end faces of the filter plate 1. Each of the pair of filter cloths 2 is provided with a folded edge portion 21 that is folded towards the outer peripheral surface of the filter plate 1. A plurality of connecting holes 22 are arranged on the folded edge portion 21 along the contour direction of the filter cloth 2. The clamp member 3 includes a groove 31 that is engaged with the upper or lower side surface of the filter plate 1, and a pair of connecting arms 32 that respectively extend to the pair of ear plates 4. The pair of connecting arms 32 are detachably fixedly connected to the ear plates 4, and the clamp member 3 is driven to clamp the folded edge portion 21 of the filter cloth 2 against the outer peripheral surface of the filter plate 1. A hook portion 51 that is hooked to each connecting hole 22 is arranged in the groove 31.
[0027] The clamp member 3 is detachably connected and fixed to the ear plate 4. During fixation, the respective connecting holes 22 of the folded edge portion 21 of the filter plate 1 are correspondingly hooked, eliminating the step of separately connecting each connecting hole 22 one by one, and improving the efficiency. Moreover, by arranging the fixing structure at the ear plate 4, the modification of the structure of the filter plate 1 is reduced, and various filter plates 1 can be adapted through the ear plate 4, reducing the customization cost.
[0028] The fixing device further includes an adjusting rod 5. The clamp member 3 is provided with a rotating groove 33 that is parallel to the folded edge portion 21 of the filter cloth 2. The rotating groove 33 includes a notch 34 that penetrates through both sides of the clamp member 3 and an opening 35 that penetrates to the folded edge portion 21. The adjusting rod 5 is inserted into the rotating groove 33, and both ends of the adjusting rod 5 are threadedly connected to the notch 34. On the outer peripheral surface of the rod body of the adjusting rod 5, corresponding to the positions of the respective connecting holes 22, a plurality of hook portions 51 are arranged radially. The hook portions 51 are tightened against the connecting holes 22 of the filter plate 1 as the adjusting rod 5 is screwed tightly.
[0029] Through the structure of the adjusting rod 5 provided, after the clamp member 3 clamps the folded edge portion 21 of the filter plate 1, the adjusting rod 5 is rotated to make the hook portions 51 rotate in the direction of tightening the filter cloth 2, thereby hooking the filter cloth 2 tightly.
[0030] The end face of the adjusting rod 5 is provided with an internal hexagonal groove.
[0031] The fixing device further includes an anti-loosening rubber plug. The anti-loosening rubber plug includes a hexagonal column that is adapted to the internal hexagonal groove and a flange that is adapted to the notch 34.
[0032] After the adjusting rod 5 is screwed tightly, the anti-loosening rubber plug is inserted to increase the frictional force between the adjusting rod 5 and the notch 34 for anti-loosening.
[0033] Elastic hooks 321 are arranged on the pair of connecting arms 32, and a clamping groove 41 is arranged on the ear plate 4 corresponding to the contour of the elastic hooks 321.
[0034] The elastic catch 321 and the corresponding position on the card slot 41 are provided with screw holes and screws.
[0035] By hooking and engaging the provided elastic catch 321 with the ear plate 4, the operation of disassembly and fixation is facilitated. When necessary, screw holes and screws can be further provided to increase the connection structure.
[0036] Through the setting of the clamp member 3, the cumbersome steps of bundling with traditional cable ties are replaced. By using the quick disassembly and assembly mechanism of the clamp member 3, the one-step hooking structure with each connection hole 22 of the filter plate 1, and the adjusting rod 5 structure for adjusting the tension of the filter plate 1, the operation of replacing the filter plate 1 is simplified, the work efficiency is improved, and the filter cloth 2 can be straightened and flattened.
[0037] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will all fall within the protection scope of the present application.
Claims
1. A filter cloth fixing device for a plate and frame filter press, characterized in that: It includes a filter plate, a pair of filter cloths and a clamping member, wherein a pair of ear plates are arranged on the left and right sides of the filter plate, the pair of filter cloths are respectively arranged on the end faces of both sides of the filter plate, the pair of filter cloths are both provided with folded edges folded toward the outer peripheral surface of the filter plate, and a plurality of connecting holes are arranged on the folded edges along the contour direction of the filter cloth, the clamping member includes a groove engaged with the upper or lower side of the filter plate, and a pair of connecting arms respectively extending to the pair of ear plates, the pair of connecting arms are detachably fixedly connected to the ear plates, and the driving clamping member and the outer peripheral surface of the filter plate are clamped to the folded edge of the filter cloth, and a hook portion hooked with each connecting hole is arranged in the groove.
2. The filter cloth fixing device for a plate and frame filter press according to claim 1, characterized in that: The fixing device also includes an adjusting rod, the clamp is provided with a rotating groove parallel to the folded edge of the filter cloth, the rotating groove includes notches penetrating the clamp on both sides, and an opening penetrating to the folded edge, the adjusting rod is inserted in the rotating groove, both ends of the adjusting rod are threadedly connected to the notches, and a plurality of hooks are radially arranged on the outer circumferential surface of the rod body of the adjusting rod corresponding to the positions of the connecting holes, the hooks are tightened along the adjusting rod thread to hook the filter plate connecting holes.
3. The filter cloth fixing device for a plate and frame filter press according to claim 2, characterized in that: The end surface of the adjusting rod is provided with a hexagonal groove.
4. The filter cloth fixing device for a plate and frame filter press according to claim 3, characterized in that: The fixing device also includes an anti-loosening rubber plug, which includes a hexagonal column adapted to the inner hexagonal groove and a flange adapted to the notch.
5. A filter cloth fixing device for a plate and frame filter press according to any one of claims 1 to 4, characterized in that: The pair of connecting arms are provided with elastic hooks, and the ear plate is provided with a slot corresponding to the outline of the elastic hook.
6. The filter cloth fixing device for a plate and frame filter press according to claim 5, characterized in that: The elastic hook and the slot are provided with screw holes and screws correspondingly.