Lightweight, quick-release, energy-saving basket filter

Abstract

This invention relates to a lightweight, quick-release, energy-saving basket filter, comprising a filter housing, a filter cage, a fluid inlet, and a fluid outlet. The key technical features are: the filter cage is a rigid, one-piece filter cage with an open top; an annular limiting plate corresponding to the upper end of the rigid, one-piece filter cage is fixed to the inner wall of the filter housing; the annular limiting plate is clearance-fitted with the rigid, one-piece filter cage; the annular limiting plate is inclined, with its higher end above the fluid outlet and its lower end below the fluid inlet; a rigid lifting beam is provided at the upper port of the rigid, one-piece filter cage; a pin-type positioning structure is provided between one edge of the upper port and the annular limiting plate; a reduced-diameter flange is provided at the top of the filter housing; the centerline of the reduced-diameter flange coincides with the centerline of the rigid, one-piece filter cage; the inner diameter of the reduced-diameter flange is larger than the outer diameter of the rigid, one-piece filter cage; and a sealing end cap is fixed to the top of the reduced-diameter flange. This invention achieves the industrial application goals of material saving, convenient assembly and disassembly, and reliable sealing.

Description

Technical Field

[0001] This invention relates to the field of industrial fluid pipeline filtration equipment technology, specifically to a lightweight, quick-release, energy-saving basket filter suitable for pipeline systems in petroleum, chemical, municipal water supply and drainage, and industrial circulating water industries. Background Technology

[0002] Basket filters are widely used in fluid transport pipelines to trap solid impurities inside the fluid, protecting downstream pipelines, pumps, valves and related equipment from running normally. They are an indispensable coarse filtration device in industrial fluid systems.

[0003] Currently, the traditional basket filters commonly used in the industry have the following problems: 1. The top-opening flange has the same diameter as the cylinder body. The flange size is large, the amount of steel used is large, the equipment weight is large, the manufacturing cost is high, and the opening and closing operation is cumbersome.

[0004] 2. An independent sealing flange must be installed between the filter cage and the shell. Most of them are oval or round flange structures, which rely on bolt tightening or elastic element compression to achieve sealing and isolation. There are many parts, the processing procedures are complicated, and the assembly is difficult.

[0005] 3. When maintaining and cleaning the filter cage, all flange bolts must be removed or the clamping structure must be loosened before the filter cage with the sealing flange can be taken out as a whole. The disassembly and assembly process is long and the maintenance efficiency is low.

[0006] 4. The elastic compression filter cage has poor structural stability and insufficient sealing reliability. In addition, the filter cage plates are redundant and the material utilization rate is low, making it unsuitable for hoisting operations of large-diameter equipment.

[0007] The aforementioned problems result in traditional filters being costly, slow to maintain, heavy, and having unreliable seals, making them unable to meet the demands of modern industry for high efficiency, energy saving, lightweight design, and quick maintenance. Summary of the Invention

[0008] The purpose of this invention is to provide a lightweight, quick-release, energy-saving basket filter with a reasonable structure and reliable operation. It addresses the problems of traditional basket filters, such as high material consumption for the top flange, cumbersome filter cage-shell sealing structure, low disassembly and maintenance efficiency, unreliable elastic compression sealing, low material utilization, and inconvenient hoisting for large-diameter equipment. Through structural optimization, it reduces steel consumption, lowers equipment weight and manufacturing costs; eliminates the filter cage sealing flange, simplifying the assembly process; adopts a quick-release positioning structure, significantly improving maintenance efficiency; enhances sealing stability and structural rigidity; and is compatible with specialized hoisting tools for large-diameter equipment, achieving the goals of universal applicability, high efficiency, reliability, energy saving, and material conservation in industrial applications.

[0009] The technical solution of this invention is: A lightweight, quick-release, energy-saving basket filter includes a filter housing, a filter cage disposed within the filter housing, and fluid inlets and outlets disposed on both sides of the filter housing. The key technical features are: the filter cage is a rigid, one-piece filter cage with an opening at the top; an annular limiting plate corresponding to the upper end of the rigid, one-piece filter cage is fixed to the inner wall of the filter housing; the annular limiting plate is clearance-fitted with the rigid, one-piece filter cage; the annular limiting plate is inclined, with its higher end positioned above the fluid outlet and its lower end positioned below the fluid inlet; a rigid lifting beam is provided at the upper port of the rigid, one-piece filter cage; a pin-type positioning structure is provided between one edge of the upper port and the annular limiting plate; a reduced-diameter flange is provided at the top of the filter housing; the centerline of the reduced-diameter flange coincides with the centerline of the rigid, one-piece filter cage; the inner diameter of the reduced-diameter flange is larger than the outer diameter of the rigid, one-piece filter cage; and a sealing end cap is fixed to the top of the reduced-diameter flange.

[0010] In the aforementioned lightweight, quick-release, energy-saving basket filter, the upper port of the rigid integrated filter cage is parallel to the annular limiting plate and faces the fluid inlet.

[0011] The aforementioned lightweight, quick-release, energy-saving basket filter has a pin-type positioning structure located on the high side of the annular limiting plate. It consists of a first support plate fixed on the annular limiting plate, a second support plate located at the upper port of the rigid integrated filter cage, a rotatable connecting plate connected to the second support plate by bolts, and a pin assembly connecting the rotatable connecting plate and the first support plate.

[0012] The aforementioned lightweight, quick-release, energy-saving basket filter has multiple radial inserts evenly distributed on the outer wall of the rigid integrated filter cage, and guide grooves corresponding to the radial inserts are provided on the inner wall of the annular limiting plate to achieve circumferential positioning of the rigid integrated filter cage.

[0013] The aforementioned lightweight, quick-release, energy-saving basket filter has a rigid lifting beam consisting of a cross-shaped lifting beam and a lifting lug located at the center of the top of the cross-shaped lifting beam.

[0014] In the aforementioned lightweight, quick-release, energy-saving basket filter, the outer edge of the reduced-bore flange is connected and fixed to the inner surface of the top of the filter housing, and the outer diameter of the sealing end cap is smaller than the outer diameter of the reduced-bore flange.

[0015] The aforementioned lightweight, quick-release, energy-saving basket filter has a support block corresponding to the rigid, integrated filter cage on the bottom surface of the filter housing.

[0016] The beneficial effects of this invention are: 1. Structural optimization of the reduced-bore flange. The traditional top flange with the same diameter as the filter housing is improved to a reduced-bore flange. The inner and outer diameters of the reduced-bore flange match the outer diameter of the internal filter cage, retaining only the minimum passage space required for filter cage removal. This reduces the amount of steel used in the flange and end cap, lowers the equipment weight, reduces the number of gaskets and fasteners, and simplifies the upper structure.

[0017] 2. Eliminate the filter cage housing sealing flange and adopt a precision clearance seal. Completely eliminate the traditional elliptical / circular sealing flange, bolt fastening structure, and elastic compression structure between the filter cage and the housing. Utilize the precise fit clearance between the rigid integrated filter cage outer wall and the annular limiting plate to form a fluid seal isolation, ensuring complete isolation between the fluid inlet and outlet. All media must be filtered through the rigid integrated filter cage, eliminating bypass and meeting the coarse filtration sealing requirements.

[0018] 3. Axial positioning is achieved using a pin-type positioning structure. Disassembly and assembly only require inserting and removing the pin, making the operation quick and easy. It can be equipped with guide grooves to achieve circumferential positioning, forming a dual positioning solution.

[0019] 4. Optimized rigid integrated filter cage structure. The elastic compression filter cage is eliminated, and a rigid integrated filter cage structure is adopted, achieving stable sealing without relying on end cap compression. The rigid lifting beam eliminates excess reinforcing plates, saving materials while maintaining reliable strength. It can be directly adapted to industrial lifting tools and is suitable for large-diameter filters.

[0020] This invention achieves a complete and industrially feasible technical solution through four core improvements: reduced diameter flange, unsealed flange gap sealing, quick-release pin positioning, and rigid integrated filter cage. It features a simple structure, low modification cost, and wide applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 yes Figure 1 Sectional view along the AA direction; Figure 3 yes Figure 2 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Reduced diameter flange, 2. Bolt pair, 3. Pin, 4. Cross-shaped lifting beam, 5. Rigid integrated filter cage, 6. Filter housing, 7. Support block, 8. Fluid outlet, 9. Fluid inlet, 10. Sealing end cap, 11. Lifting lug, 12. Second support plate, 13. Annular limiting plate, 14. First support plate, 15. Radial insert plate, 16. Rotatable connecting plate. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-3As shown, the lightweight, quick-release, energy-saving basket filter includes a filter housing 6, a filter cage disposed in the filter housing 6, a fluid inlet 9 and a fluid outlet 8 disposed on both sides of the filter housing 6.

[0025] The filter cage is a rigid, one-piece filter cage 5 with an opening at the top. The inner wall of the filter housing 6 is fixed with an annular limiting plate 13 corresponding to the upper end of the rigid, one-piece filter cage 5. The annular limiting plate 13 is clearance-fitted with the rigid, one-piece filter cage 5.

[0026] The annular limiting plate 13 is arranged at an angle, with its higher end located above the fluid outlet 8 and its lower end located below the fluid inlet 9. In this embodiment, the upper port of the rigid integrated filter cage 5 is parallel to the annular limiting plate 13 and faces the fluid inlet 9.

[0027] The upper port of the rigid integrated filter cage 5 is provided with a rigid lifting beam. In this embodiment, the rigid lifting beam consists of a cross-shaped lifting beam 4 and a lifting lug 11 located at the top center of the cross-shaped lifting beam 4.

[0028] A pin-type positioning structure is provided between one side of the upper port edge of the rigid integrated filter cage 5 and the annular limiting plate 13. In this embodiment, the pin-type positioning structure is located on the high side of the annular limiting plate 13, and consists of a first support plate 14 fixed on the annular limiting plate 13, a second support plate 12 located at the upper port of the rigid integrated filter cage 5, a rotatable connecting plate 16 connected to the second support plate 12 by bolt pair 2, and a pin 3 connecting the rotatable connecting plate 16 and the first support plate 14. To ensure positional stability, multiple radial insert plates 15 can also be uniformly provided on the outer wall of the rigid integrated filter cage 5, and guide grooves corresponding to the radial insert plates 15 are provided on the inner wall of the annular limiting plate 13 to achieve circumferential positioning of the rigid integrated filter cage 5.

[0029] The filter housing 6 is provided with a reduced-diameter flange 1 at its top. The centerline of the reduced-diameter flange 1 coincides with the centerline of the rigid integrated filter cage 5. The inner diameter of the reduced-diameter flange 1 is larger than the outer diameter of the rigid integrated filter cage 5. A sealing end cap 10 is fixed to the top of the reduced-diameter flange 1. The outer edge of the reduced-diameter flange 1 is connected and fixed to the inner surface of the top of the filter housing 6. The outer diameter of the sealing end cap 10 is smaller than the outer diameter of the reduced-diameter flange 1.

[0030] The bottom surface of the filter housing 6 is provided with a support block 7 corresponding to the rigid integrated filter cage 5.

[0031] Working principle: 1. During normal operation, the wastewater to be filtered enters the filter housing 6 through the fluid inlet 9, enters the cage through the upper port of the rigid integrated filter cage 5, and is discharged through the fluid outlet 8 after filtration.

[0032] 2. After working for a period of time, perform maintenance on the rigid integrated filter cage 5.

[0033] During maintenance, open the sealing end cover 10, pull out the pin 3, rotate the rotatable connecting plate 16 to the inside of the rigid integrated filter cage 5, use a special lifting tool to lift out the rigid integrated filter cage 5, clean the filtered material inside, reinstall it into the filter housing 6, reconnect it to the first support plate 14 using the pin 3, and then close the sealing end cover 10 to complete the quick maintenance.

[0034] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A lightweight, quick-release, energy-saving basket filter, comprising a filter housing, a filter cage disposed within the filter housing, and fluid inlets and fluid outlets disposed on both sides of the filter housing, characterized in that: The filter cage is a rigid, one-piece filter cage with an opening at the top. An annular limiting plate corresponding to the upper end of the rigid, one-piece filter cage is fixed to the inner wall of the filter housing. The annular limiting plate is clearance-fitted with the rigid, one-piece filter cage. The annular limiting plate is arranged at an angle, with its higher end located above the fluid outlet and its lower end located below the fluid inlet. A rigid lifting beam is provided at the upper port of the rigid, one-piece filter cage. A pin-type positioning structure is provided between one side of the upper port edge and the annular limiting plate. A reduced-diameter flange is provided at the top of the filter housing. The centerline of the reduced-diameter flange coincides with the centerline of the rigid, one-piece filter cage. The inner diameter of the reduced-diameter flange is larger than the outer diameter of the rigid, one-piece filter cage. A sealing end cap is fixed to the top of the reduced-diameter flange.

2. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The upper port of the rigid integrated filter cage is parallel to the annular limiting plate and faces the fluid inlet.

3. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The pin-type positioning structure is located on the high side of the annular limiting plate. It consists of a first support plate fixed on the annular limiting plate, a second support plate located at the upper port of the rigid integrated filter cage, a rotatable connecting plate connected to the second support plate by bolts, and a pin assembly connecting the rotatable connecting plate and the first support plate.

4. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The outer wall of the rigid integrated filter cage is uniformly provided with multiple radial insert plates, and the inner wall of the annular limiting plate is provided with guide grooves corresponding to the radial insert plates, so as to achieve circumferential positioning of the rigid integrated filter cage.

5. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The rigid lifting beam consists of a cross-shaped lifting beam and a lifting lug located at the center of the top of the cross-shaped lifting beam.

6. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The outer edge of the reduced-bore flange is fixedly connected to the inner surface of the top of the filter housing, and the outer diameter of the sealing end cap is smaller than the outer diameter of the reduced-bore flange.

7. The lightweight, quick-release, energy-saving basket filter according to claim 1, characterized in that: The bottom surface of the filter housing is provided with a support block corresponding to the rigid integrated filter cage.

Images