Filter element structure

Abstract

The utility model relates to the technical field of filtration, and discloses a filter element structure, which is characterized in that a filter element body comprises a central tube, an inner framework, a corrugated sintered felt and outer sealing tubes at two ends from inside to outside, and the central tube is a circular tube with openings at the upper end and the lower end; the inner framework is a round pipe fixed outside the central pipe, the pipe wall is net-shaped, a gap is formed between the inner framework and the central pipe, the upper end of the inner framework is sealed and fixed by the outer sealing pipe and the screwed joint, and the lower end of the inner framework is sealed and fixed by the outer sealing pipe and the base; the corrugated sintered felt is fixed on the outer side of the inner framework pipe wall. The filter element is reasonable in structural design, the cleaning efficiency of the filter element can be effectively improved, the service life of the filter element can be effectively prolonged, the labor intensity of workers and the operation and maintenance cost are reduced, environmental pollution is reduced, safety is improved, and the filter element has high practical value and wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, in particular to a filter element structure. Background Art

[0002] Filtration technology is a key technology widely used in environmental engineering and materials science. It is mainly used to separate suspended particles, colloids or other impurities in liquids or gases. The filter is the core equipment of filtration technology, and its performance mainly depends on the structure and material of the matching filter element. The main function of the filter element is to separate the substances to be filtered by physical means (such as screening, adsorption, inertial collision, etc.) to achieve the purpose of purification.

[0003] However, there are some problems with the existing filter element structure. The existing filter element generally only has an inner frame and pleated sintered felt from the inside to the outside. The filter element does not have a central tube, round tube heads at both ends, and an outer frame. Therefore, the filter element itself only has a filtering function and has no function for backwashing. The disadvantage of gas taking shortcuts cannot be avoided. In addition, due to the lack of an outer frame, the structure of the existing filter element and the structure of the existing filter make its backwashing function invalid, requiring long-term manual frequent opening of the cover for cleaning, thereby increasing the labor intensity and operation and maintenance costs of workers. Environmental pollution caused by the volatilization of the medium, flammable hazards, safety accidents caused by manual cleaning, environmental pressure and other problems also follow one after another. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a filter element structure, which solves the technical problem that the filter element does not have a central tube, round tube heads at both ends and an external skeleton, resulting in the filter element only having a filtering function and having no function for backwashing, and the unavoidable disadvantage of the gas taking shortcuts; it also solves the technical problems that the structure of the existing filter element and the structure of the existing filter are combined, resulting in the ineffective backwashing function, requiring long-term and frequent manual opening of the cover for cleaning, increasing the labor intensity and operation and maintenance costs of workers, and environmental pollution caused by medium volatilization, flammable hazards, safety accidents caused by manual cleaning, and environmental pressure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter element structure, the filter element body includes a center tube, an inner frame, a corrugated sintered felt from the inside to the outside, and outer sealing tubes at both ends. The center tube is a circular tube with openings at the upper and lower ends; the inner frame is a circular tube fixed to the outside of the center tube, the tube wall is a mesh, there is a gap between the inner frame and the center tube, the upper end of the inner frame is sealed and fixed by an outer sealing tube and a bolt joint, and the lower end of the inner frame is sealed and fixed by an outer sealing tube and a base; the corrugated sintered felt is fixed to the outside of the inner frame tube wall.

[0006] Preferably, an external skeleton is fixed outside the corrugated sintered felt.

[0007] Preferably, the upper end of the central tube is provided with a threaded joint for connecting to a filter partition.

[0008] Preferably, at least two positioning tie rods are provided on the inner wall below the inner frame for positioning the central tube.

[0009] The beneficial effects of the utility model are:

[0010] 1. The filter element of the present invention has a built-in central tube. When back-blowing gas is used for cleaning, the gas flows from top to bottom to the bottom of the central tube and then folds back to the outside of the central tube, forming a large number of floating bubbles that force the filter cake to peel off the filter element and fall off, thereby improving the cleaning efficiency of the filter element, reducing the frequency of manual cleaning, and reducing the labor intensity of workers and operating and maintenance costs.

[0011] 2. The two ends of the filter element of the present invention are sealed with external sealing tubes, which can effectively prevent oil from entering the filter element. Excess oil is discharged from the equipment through the oil drain pipe on the top of the filter, thereby avoiding oil contamination of the filter element and increasing the service life of the filter element.

[0012] 3. The external fixed exoskeleton of the pleated sintered felt of the present invention ensures that the filter element can resist the back-blowing force from the inside to the outside during gas back-blowing, avoiding the loosening or even peeling of the welding points of the pleated sintered felt, thereby improving the stability and reliability of the filter element.

[0013] 4. At least two positioning tie bars are provided on the inner wall below the inner frame of the present invention for positioning the central tube, so as to prevent the central tube from shaking under the action of gas pressure, thereby improving the stability and reliability of the filter element.

[0014] In general, the filter element structure of the present invention is reasonably designed, can effectively improve the cleaning efficiency and service life of the filter element, reduce the labor intensity and operation and maintenance costs of workers, reduce environmental pollution, improve safety, and has high practical value and broad application prospects.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a 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 to the present invention.

[0017] Figure 1 It is the filter element structure diagram.

[0018] In the figure: 1. Threaded joint; 2. External sealing tube; 3. Upper end of filter element; 4. Internal frame; 5. Pleated sintered felt; 6. External frame; 7. Center tube; 8. External sealing tube; 9. Positioning tie rod; 10. Filter element base; 11. Tighten the hexagonal head. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1 A filter element structure, from inside to outside, includes a central tube 7, an inner frame 4, a pleated sintered felt 5, an outer frame 6, an outer sealing tube 2, an outer sealing tube 8, a threaded joint 1, a filter element upper end 3, a positioning tie rod 9, a filter element base 10, and a tightening hexagonal head 11;

[0021] The center tube 7 is a circular tube with openings at both the upper and lower ends;

[0022] The inner frame 4 is a round tube fixed to the outside of the central tube, the tube wall is mesh-shaped, there is a gap between the inner frame 4 and the central tube, the lower end of the inner frame 4 is connected to the outer sealing tube 8, and the lower end of the outer sealing tube 8 is sealed and fixed by the filter element base 10;

[0023] The corrugated sintered felt 5 is fixed on the outer side of the tube wall of the inner skeleton 4 .

[0024] The corrugated sintered felt 5 is externally fixed with a grid-type outer frame 6 to prevent the welding points of the corrugated sintered felt from loosening or even peeling off.

[0025] The upper end of the central tube 7 is connected to the outer sealing tube 2, and the upper end of the outer sealing tube 2 is provided with a threaded joint 1 for connecting to the filter partition.

[0026] At least two positioning tie bars 9 are provided on the inner wall below the outer sealing tube 8 for positioning the central tube 7 to prevent the central tube 7 from shaking under the action of gas pressure.

[0027] In normal filtration, the oily and solid-containing filtered liquid spreads throughout the entire device from the bottom of the device upward. The filtration can effectively filter out the oil and solids in the liquid, and the filtered clear liquid is discharged from the filter element through the central tube at the bottom of the filter element. Part of the filtered solids will adhere to the outer surface of the filter element, and part will fall to the bottom of the device. The density of oil is smaller than that of liquid, and it will gather in the upper layer of the filtered liquid and be discharged from the equipment through the oil discharge pipeline of the equipment.

[0028] During backblowing, the backblowing gas passes through the center tube directly to the bottom of each filter element, and the backblowing gas releases bubbles from the bottom of the center tube. A large number of continuous bubbles, under the action of buoyancy and pressure, will form an upward and outward thrust, breaking and floating from the inside to the outside, hitting (driving) the liquid to produce a huge Brownian turbulence force (the liquid phase area in the tank is in a boiling motion state), forcing the filter cake to peel off the filter element and fall off completely, thereby achieving complete regeneration.

[0029] The filter element of the present invention includes a central tube, an inner frame, a pleated sintered felt, two end outer sealing tubes and a sealing head from the inside to the outside. This structural filter element combined with a baffle filter can achieve the effect of liquid, solid and oil separation. The optimized structure of the filter element matches the structure of the baffle filter with a turbulent backwash function, so that the baffle filter with a turbulent backwash function not only has a filtering function, but also can overcome the disadvantage of gas taking a shortcut, and truly achieve effective backwashing without opening the cover.

[0030] The filter and filter element of the present invention effectively reduce the operation and maintenance costs caused by opening the cover, cleaning and disassembling the filter element, changing the pad, installing, pressing, leak testing, and heat preservation; reduce the labor intensity of workers; and save a lot of time and energy, improve the operating efficiency of the equipment, and extend the operating cycle of the filter, which greatly promotes the requirement of chemical companies for strong production continuity. The problems of environmental pollution and flammable hazards caused by the volatilization of the medium, safety accidents caused by manual cleaning, and environmental protection pressure are solved.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A filter element structure, characterized in that: The filter element body comprises, from the inside to the outside, a central tube (7), an inner frame (4), a folded sintered felt (5), and outer sealing tubes (2) at both ends. The central tube (7) is a circular tube with openings at the upper and lower ends. The inner frame (4) is a circular tube fixed to the outside of the central tube (7). The tube wall is mesh-shaped. There is a gap between the inner frame (4) and the central tube (7). The upper end of the inner frame (4) is sealed and fixed by the outer sealing tube (2) and the threaded joint (1). The lower end of the inner frame (4) is sealed and fixed by the outer sealing tube (2) and the base. The folded sintered felt (5) is fixed to the outer side of the tube wall of the inner frame (4).

2. A filter element structure according to claim 1, characterized in that: An external frame (6) is fixed outside the corrugated sintered felt (5).

3. A filter element structure according to claim 1, characterized in that: The upper end of the central tube (7) is provided with a threaded joint (1) for connecting to a filter partition.

4. A filter element structure according to claim 1, characterized in that: At least two positioning tie rods are provided on the inner wall below the inner frame (4) for positioning the central tube (7).

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