Sludge filter press

Abstract

The utility model relates to environmental protection equipment technical field discloses a kind of sludge filter-pressing frame, including cavity assembly and cavity reinforcing assembly, cavity assembly includes the cavity structure of upper and lower openings formed by the welding of multiple wallboards, the cross-sectional area of cavity structure is from bottom to top increasing along vertical direction, and cavity structure is divided into upper filter area and lower high-pressure area along height direction, cavity reinforcing assembly includes the multilayer annular reinforcing plate group welded in upper filter area, and the multilayer annular reinforcing beam group welded in lower high-pressure area, the spacing of annular reinforcing plate group and the spacing of annular reinforcing beam group are all from top to bottom decreasing and form the gradient distribution of upper sparse lower dense;The utility model reduces pressure head jam by adapting lower pressure requirement, the form of cavity structure upper big lower small reduces pressure head jam, reinforcing component strengthens anti-deformation ability, solve the problem that traditional filter-pressing frame structure is insufficient, drainage is not smooth, pressure head jam and drying effect is poor.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically to a sludge filter press frame. Background Technology

[0002] In sludge treatment and disposal processes, filter press dewatering is a key step in achieving sludge reduction. As the core load-bearing and filtration component of the filter press equipment, the structural stability, drainage efficiency, and deformation resistance of the filter press directly determine the safety, drying effect, and operational stability of the filter press process.

[0003] Currently, existing filter press frames generally suffer from the following problems: Insufficient structural strength: Traditional filter press frames mostly adopt a single cavity structure or simple reinforcement design. Under high pressure filtration conditions (especially when the lower part of the cavity bears a large weight of sludge and extrusion load), they are prone to damage such as wall panel deformation and corner cracking. This not only shortens the service life of the equipment, but may also lead to sludge leakage due to structural failure, posing a safety hazard.

[0004] Poor drainage: Some filter press frames have unreasonable water filtration channel design (such as uneven distribution of water filtration holes or no drainage slope), making it difficult for sludge moisture to be discharged quickly during the filtration process, resulting in a prolonged drying cycle, high sludge moisture content, and affecting subsequent treatment efficiency.

[0005] Pressure head jamming: If the cavity structure of the filter press frame is designed with equal upper and lower diameters, or if the internal reinforcing components protrude from the cavity surface, frictional resistance is easily generated during the reciprocating motion of the pressure head, and even jamming may occur, reducing the operational stability of the filter press equipment.

[0006] The existence of the above problems severely restricts the processing capacity, operational safety, and economy of sludge filter press equipment. Utility Model Content

[0007] The purpose of this utility model is to provide a sludge filter press frame. The cavity assembly of the filter press frame adopts an upper and lower open cavity structure with the cross-sectional area increasing from bottom to top, and is functionally divided into an upper filtration zone and a lower high-pressure zone. This is adapted to the stress characteristics of the lower part bearing greater pressure during the filtration process. Combined with the shape of the cavity structure that is larger at the top and smaller at the bottom, it can also reduce the frictional resistance when the pressure head moves, thereby solving the problems of poor drainage, pressure head jamming, and poor drying effect during the filtration process. In addition, the cavity reinforcement assembly of this filter press frame is provided with a multi-layer ring reinforcement plate group for the upper filtration zone and a multi-layer ring reinforcement beam group for the lower high-pressure zone. Both adopt a gradient distribution with the spacing decreasing from top to bottom, which enhances the overall structural resistance to deformation and solves the problems of insufficient structural strength and easy damage of traditional filter press frames.

[0008] This utility model is achieved through the following technical solution: A sludge filter press frame, comprising: A cavity assembly, comprising a cavity structure with upper and lower openings formed by welding together multiple wall panels, wherein the cross-sectional area of ​​the cavity structure increases vertically from bottom to top, and the cavity structure is divided into an upper filtration zone and a lower high-pressure zone along the height direction; The cavity reinforcement assembly includes a multi-layer annular reinforcing plate group welded to the upper filter area and a multi-layer annular reinforcing beam group welded to the lower high-pressure area. The spacing between the annular reinforcing plate group and the spacing between the annular reinforcing beam group decreases from top to bottom, forming a gradient distribution with sparser spacing at the top and denser spacing at the bottom.

[0009] In this design, the cavity assembly adopts an upper and lower open cavity structure with the cross-sectional area increasing from bottom to top. This structure is suitable for the greater sludge gravity and compression load that the lower part bears during the filter press process. The larger top and smaller bottom shape also reduces frictional resistance during the reciprocating motion of the pressure head, preventing it from jamming. Simultaneously, the cavity is divided along its height into an upper filtration zone and a lower high-pressure zone, clearly defining the functional zoning. The upper part can focus on filtration, while the lower part is strengthened to withstand pressure. The cavity reinforcement assembly is designed with reinforcement structures tailored to the characteristics of different areas. The upper filtration zone features multi-layered annular reinforcing plates, and the lower high-pressure zone features multi-layered annular reinforcing beams. Both use a gradient distribution with decreasing spacing from top to bottom, resulting in a denser reinforcement structure in the lower high-pressure zone. This allows for targeted resistance to greater loads, solving the problem of insufficient overall strength and easy deformation and damage caused by uneven reinforcement distribution in traditional filter presses. Furthermore, the annular structure of the reinforcing plates and beams provides uniform circumferential support to the cavity, preventing localized stress concentration and further improving structural stability.

[0010] As a further technical solution for the sludge filter press frame, the wall panel has multiple strip-shaped holes of different lengths from top to bottom. The strip-shaped holes provide channels for the discharge of sludge water during the filter press process, ensuring that the water in the sludge can seep out in time through the strip-shaped holes during the filter press, and avoiding the accumulation of water in the cavity, which would affect the drying effect. At the same time, the strip-shaped holes are designed with different lengths to adapt to the shape of the cavity structure with the cross-sectional area increasing vertically from bottom to top, as well as the functional zoning characteristics of the upper filtration zone and the lower high-pressure zone, so that the filtration requirements at different heights can be matched.

[0011] As a further technical solution for the sludge filter press frame, the width of the strip hole is less than or equal to 4mm. The smaller width effectively intercepts sludge particles, preventing sludge particles from leaking out of the strip hole along with water during the filter press process, thus avoiding filter blockage or sludge loss.

[0012] As a further technical solution for the sludge filter press frame, the annular reinforcing plate assembly includes multiple horizontal reinforcing plates, wherein the horizontal reinforcing plates are strip-shaped flat plates; The horizontal reinforcing plates are arranged at different intervals from top to bottom on the outer wall of the upper filtration zone. The horizontal reinforcing plates are welded together with the wall panel. The strip-shaped plates provide lateral support to the wall panel of the upper filtration zone through welding, which enhances the structural rigidity of the upper filtration zone and prevents the upper filtration zone from deforming due to stress during the filtration process. The horizontal reinforcing plates located on the same horizontal plane are welded together end to end to form a ring structure, which can form a uniform circumferential constraint force on the upper filtration zone and prevent the wall panel from being damaged due to excessive local stress.

[0013] As a further technical solution for the sludge filter press frame, the horizontal reinforcing plate is inclinedly welded to the wall plate, with the inclination direction being downward from the outside of the cavity. The inclined setting forms a directional drainage guide structure. When the sludge water seeps out through the strip holes of the wall plate during the filter press process, it can flow quickly downward along the inclined surface of the horizontal reinforcing plate, avoiding water accumulation at the connection between the wall plate and the horizontal reinforcing plate, and ensuring smooth drainage path.

[0014] As a further technical solution for the sludge filter press frame, the annular reinforcing beam assembly includes multiple horizontal reinforcing beams. These multiple horizontal reinforcing beams are welded together at both ends around the outer wall of the lower high-pressure zone to form an annular structure. This structure can provide uniform circumferential constraint on the wall panel of the lower high-pressure zone, preventing deformation or cracking of the wall panel due to localized stress concentration. This enhances the overall structural stability of the lower high-pressure zone. Furthermore, the cross-sectional width of the horizontal reinforcing beams is greater than that of the horizontal reinforcing plates, providing stronger structural support for the lower high-pressure zone which bears greater pressure. This adapts to the stress requirements of the lower high-pressure zone during the filter press process, which bears greater sludge gravity and compressive loads.

[0015] As a further technical solution for the sludge filter press, the cavity reinforcement assembly also includes longitudinal reinforcement blocks. The longitudinal reinforcement blocks are respectively arranged vertically between two adjacent layers of the annular reinforcement plate groups and between two adjacent layers of the annular reinforcement beam groups. The two ends of the longitudinal reinforcement blocks are welded to the upper and lower layers of the annular reinforcement plate groups and the upper and lower layers of the annular reinforcement beam groups, respectively. The sides of the longitudinal reinforcement blocks are welded to the wall panel. Through the connecting effect of the longitudinal reinforcement blocks, the originally independent multi-layer annular reinforcement plate groups and multi-layer annular reinforcement beam groups are connected in series into an integral load-bearing structure. This makes the annular reinforcement plate groups in the upper filtration zone form a longitudinally continuous support system, and the annular reinforcement beam groups in the lower high-pressure zone form a longitudinally coordinated pressure-bearing structure, avoiding local deformation of the single-layer reinforcement structure due to independent stress.

[0016] As a further technical solution for the sludge filter press frame, the cavity reinforcement assembly also includes a longitudinal reinforcement plate. The longitudinal reinforcement plate is located on both sides of the lower high-pressure zone, and the lowest annular reinforcement plate group and the lowest annular reinforcement beam group are welded together as a whole through the longitudinal reinforcement plate. This can provide additional lateral support for the lower high-pressure zone that bears greater pressure, thereby improving the deformation resistance of the lower high-pressure zone.

[0017] As a further technical solution for the sludge filter press, the longitudinal reinforcing plate has several drainage holes. These drainage holes can also provide a discharge channel for a small amount of water that may seep into the vicinity of the longitudinal reinforcing plate during the filter press process, preventing water from accumulating at the connection between the longitudinal reinforcing plate and the wall plate or other reinforcing structures.

[0018] As a further technical solution for the sludge filter press frame, the cavity reinforcement assembly also includes a corner reinforcement block. The corner reinforcement block is located at the corner of the lower high-pressure zone, and the upper and lower ends of the corner reinforcement block are respectively connected to the adjacent annular reinforcement beam group. Through the connection with the adjacent annular reinforcement beam group, the corner reinforcement block transfers the load borne at the corner to the annular reinforcement beam group, thereby dispersing the local stress and preventing damage to the corner due to high-pressure extrusion and the gravity of sludge. This further improves the filter press frame's resistance to deformation and service life under high-pressure conditions.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model divides the cavity structure into an upper filtration zone and a lower high-pressure zone, and correspondingly sets up multi-layer ring-shaped reinforcing plate groups and ring-shaped reinforcing beam groups. Both adopt a gradient distribution with sparse upper and dense lower sections. Combined with the design that the cross-sectional width of the horizontal reinforcing beam is larger than that of the horizontal reinforcing plate, it can specifically adapt to the requirement of the lower high-pressure zone to bear greater loads. At the same time, the corner reinforcing blocks strengthen the support of the weak corner of the lower high-pressure zone. The longitudinal reinforcing blocks and longitudinal reinforcing plates connect the various reinforcing structures into a whole, effectively solving the problems of insufficient structural strength and easy damage of the filter press frame in the prior art, and significantly improving the deformation resistance and service life of the filter press frame. 2. The cavity structure of this utility model has a cross-sectional area that increases from bottom to top, with the larger area at the top and the smaller area at the bottom. This design reduces the frictional resistance during the reciprocating motion of the pressure head and prevents the pressure head from getting stuck. 3. This utility model provides channels for water drainage by opening strip holes of different lengths on the wall panel, and the width of the strip holes is ≤4mm to prevent sludge particles from leaking out. The horizontal reinforcing plate is welded to the wall panel at an incline to form a drainage guide, and the drainage holes on the longitudinal reinforcing plate can also help drain accumulated water. This solves the problem of poor drainage in traditional filter press frames, speeds up the drainage of sludge and water, and improves the drying effect. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] The attached diagram shows the markings and corresponding component names: 1-Wall panel, 2-Strip hole, 3-Top plate, 4-Longitudinal reinforcing block, 5-Horizontal reinforcing plate, 6-Horizontal reinforcing beam, 7-Longitudinal reinforcing plate, 8-Corner reinforcing block, 9-Bottom plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0023] Example 1 This embodiment 1 provides a sludge filter press frame, such as Figure 1 As shown, it includes a cavity assembly and a cavity reinforcement assembly; Please refer to Figure 1 As shown, the cavity assembly includes a cavity structure with upper and lower openings formed by welding together multiple wall panels 1. The top opening edge of the cavity structure is connected to a top plate 3, and the bottom opening edge is connected to a bottom plate 9. The cross-sectional area of ​​the cavity structure increases vertically from bottom to top, presenting a unique shape that is larger at the top and smaller at the bottom. From the height direction, the cavity structure is clearly divided into an upper filtration zone and a lower high-pressure zone. In the actual pressure filtration process, this partitioned design can fully adapt to the functional requirements of different areas. The lower high-pressure zone, due to bearing greater sludge gravity and compressive load, requires stronger structural support. The cavity shape that is larger at the top and smaller at the bottom not only helps to reduce the frictional resistance when the pressure head moves and avoids the phenomenon of pressure head jamming, but also makes the distribution of sludge in the cavity more reasonable.

[0024] Meanwhile, multiple strip holes 2 are provided on the wall panel 1 from top to bottom. These strip holes 2 have different lengths and widths of less than or equal to 4mm. The different lengths of the strip holes can adapt to the water filtration needs at different heights of the cavity, while the smaller width can effectively intercept sludge particles and prevent them from leaking out with the water during the filter pressing process, ensuring the smooth flow of the drainage channel and improving the overall drainage efficiency.

[0025] Please refer to the following: Figure 1As shown, the cavity reinforcement assembly includes a multi-layered annular reinforcement plate group welded to the upper filtration zone. This annular reinforcement plate group consists of multiple strip-shaped horizontal reinforcement plates 5, which are welded end-to-end on the same horizontal plane to form a stable annular structure that surrounds the outer wall of the upper filtration zone of the cavity. They are arranged at different intervals from top to bottom, presenting a distribution pattern of sparse at the top and dense at the bottom. This distribution pattern is adapted to the stress difference along the height direction of the upper filtration zone, which can meet the structural strength requirements and avoid unnecessary waste of materials. At the same time, the horizontal reinforcement plates 5 are welded to the wall panel 1 at an angle, with the angle from the outside of the cavity downward at a slope of 3‰. This design not only enhances the support of the horizontal reinforcement plates 5 for the wall panel 1, but also provides guidance for water seeping from the strip holes 2, allowing it to flow quickly downward along the surface of the inclined horizontal reinforcement plates 5, further improving drainage efficiency.

[0026] The cavity reinforcement assembly also includes a multi-layered annular reinforcing beam group welded to the lower high-pressure zone. This annular reinforcing beam group consists of multiple horizontal reinforcing beams 6. Similarly, the horizontal reinforcing beams 6 are welded end to end to form a ring, distributed around the outer wall of the lower high-pressure zone of the wall panel 1. The cross-sectional width of the horizontal reinforcing beams 6 is designed to be larger than that of the horizontal reinforcing plate 5, thus providing stronger structural support for the lower high-pressure zone which bears greater pressure. Their spacing also follows the gradient distribution principle of sparser at the top and denser at the bottom, which matches the stress characteristics of the lower high-pressure zone and ensures the structural stability of the lower high-pressure zone under high-pressure conditions.

[0027] In this embodiment, to significantly improve the deformation resistance and service life of the filter press frame, the cavity reinforcement assembly also includes a longitudinal reinforcement block 4. The longitudinal reinforcement block 4 is vertically disposed between two adjacent layers of annular reinforcement plates and two adjacent layers of annular reinforcement beams. Specifically, the longitudinal reinforcement block 4 is located between the horizontal reinforcement plate 5 and the top plate 3, between adjacent horizontal reinforcement plates 5, between horizontal reinforcement plates 5 and horizontal reinforcement beams 6, between adjacent horizontal reinforcement beams 6, and between horizontal reinforcement beams 6 and the bottom plate 9. It is welded to the top plate 3, the horizontal reinforcement plates 5, the horizontal reinforcement beams 6, and the bottom plate 9 by welding. The side is tightly welded to the wall panel 1. In this way, the originally relatively independent multi-layer annular reinforcement structure is connected into a whole, which greatly enhances the connection stability between the cavity reinforcement assembly and the cavity assembly, so that the entire filter press frame can effectively distribute the load in both the longitudinal and transverse directions, significantly improving the rigidity and deformation resistance of the overall structure.

[0028] In some other embodiments of this invention, to significantly improve the deformation resistance and service life of the filter press frame, the cavity reinforcement assembly also includes longitudinal reinforcement plates 7. The longitudinal reinforcement plates 7 are located on both sides of the lower high-pressure zone. The longitudinal reinforcement plates 7 firmly weld the lowest annular reinforcement plate assembly and the lowest annular reinforcement beam assembly into a single unit, further strengthening the continuity between the upper filtration zone and the lower high-pressure zone reinforcement structure, making the entire filter press frame structure more stable. It is worth mentioning that several drainage holes are also provided on the longitudinal reinforcement plates. During the filtration process, if a small amount of water seeps into the vicinity of the longitudinal reinforcement plates 7, these drainage holes can serve as drainage channels, preventing water accumulation at the connection points between the longitudinal reinforcement plates 7 and the wall panel 1 or other reinforcement structures, avoiding corrosion problems caused by long-term water accumulation, thereby extending the service life of the filter press frame.

[0029] In some other embodiments of this invention, since the corner of the lower high-pressure zone is a weak point in the entire structure, it is prone to cracking or deformation due to stress concentration during the filtration process. Therefore, the cavity reinforcement assembly also includes corner reinforcement blocks 8. The corner reinforcement blocks 8 are installed at the corners of the lower high-pressure zone and are welded together with the adjacent horizontal reinforcement plates 5, horizontal reinforcement beams 6, longitudinal reinforcement blocks 4, and bottom plates 9 by welding. The corner reinforcement blocks 8 can effectively transfer the load borne at the corner to the annular reinforcement beam assembly, thereby dispersing local stress and ensuring that the corner maintains the structural integrity under high-pressure extrusion and the gravity of sludge. This greatly enhances the overall annular constraint capacity of the annular reinforcement beam assembly and further improves the filter press frame's resistance to deformation and service life under high-pressure conditions.

[0030] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sludge filter press frame, characterized in that, include: The cavity assembly includes a cavity structure with upper and lower openings formed by welding multiple wall panels (1). The cross-sectional area of ​​the cavity structure increases vertically from bottom to top, and the cavity structure is divided into an upper filtration zone and a lower high-pressure zone along the height direction. The cavity reinforcement assembly includes a multi-layer annular reinforcing plate group welded to the upper filter area and a multi-layer annular reinforcing beam group welded to the lower high-pressure area. The spacing between the annular reinforcing plate group and the spacing between the annular reinforcing beam group decreases from top to bottom, forming a gradient distribution with sparser spacing at the top and denser spacing at the bottom.

2. The sludge filter press frame according to claim 1, characterized in that, The wall panel (1) has multiple strip holes (2) of different lengths from top to bottom.

3. A sludge filter press frame according to claim 2, characterized in that, The width of the strip hole (2) is less than or equal to 4 mm.

4. A sludge filter press frame according to claim 1, characterized in that, The annular reinforcing plate group includes multiple horizontal reinforcing plates (5), and the horizontal reinforcing plates (5) are strip-shaped flat plates; Among them, multiple horizontal reinforcing plates (5) are arranged from top to bottom at different intervals to the outer wall of the upper filter area. The horizontal reinforcing plates (5) are welded together with the wall panel (1), and the horizontal reinforcing plates (5) located on the same horizontal plane are welded together end to end to form a ring structure.

5. A sludge filter press frame according to claim 4, characterized in that, The horizontal reinforcing plate (5) is welded to the wall panel (1) at an angle, with the angle being downward from the outside of the cavity.

6. A sludge filter press frame according to claim 4, characterized in that, The annular reinforcing beam group includes multiple horizontal reinforcing beams (6), which are welded together at the beginning and end along the outer wall of the lower high-pressure zone to form an annular structure. The cross-sectional width of the horizontal reinforcing beams (6) is greater than the cross-sectional width of the horizontal reinforcing plate (5).

7. A sludge filter press frame according to claim 1, characterized in that, The cavity reinforcement assembly also includes a longitudinal reinforcement block (4), which is disposed vertically between two adjacent layers of the annular reinforcement plate group and between two adjacent layers of the annular reinforcement beam group. The two ends of the longitudinal reinforcement block (4) are welded to the upper and lower layers of the annular reinforcement plate group and the upper and lower layers of the annular reinforcement beam group, respectively. The side of the longitudinal reinforcement block (4) is welded to the wall panel (1).

8. A sludge filter press frame according to claim 1, characterized in that, The cavity reinforcement assembly also includes a longitudinal reinforcement plate (7), which is located on both sides of the lower high-pressure zone, and the lowest layer of the annular reinforcement plate group and the lowest layer of the annular reinforcement beam group are welded together as a whole through the longitudinal reinforcement plate (7).

9. A sludge filter press frame according to claim 8, characterized in that, The longitudinal reinforcing plate (7) has several drainage holes.

10. A sludge filter press frame according to claim 8, characterized in that, The cavity reinforcement assembly also includes a corner reinforcement block (8), which is located at the corner of the lower high-voltage zone, and the upper and lower ends of the corner reinforcement block (8) are respectively connected to the adjacent annular reinforcement beam group.

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