CN111841107A - Filter sheet, laminated filter and filter device - Google Patents

Abstract

The invention discloses a filter disc which comprises a filter disc main body, wherein a central shaft hole is formed in the middle of the filter disc main body, an inner clamping edge is arranged at the central shaft hole of the filter disc, an outer pressing edge is arranged at the outer edge of the filter disc main body, an upper circulation groove located at the upper end face of the filter disc main body and a lower circulation groove located at the lower end face of the filter disc main body are formed between the inner clamping edge and the outer pressing edge, an opening communicated with the lower circulation groove is formed in the inner clamping edge, and a notch communicated with the upper circulation groove is formed in the outer pressing edge. The filter disc can simplify the die to reduce the processing cost and has the advantages of simple mechanism and excellent filtering effect. The invention also discloses a laminated filter and a filtering device.

Description

Filter sheet, laminated filter and filter device

Technical Field

The invention relates to the field of filtration, in particular to a filter disc.

Background

With the development of economy, many liquid systems require filters, and most of the filter elements of the existing filters include filter sheets 10000 and filter papers 30, and the filter sheets 10000 and the filter papers 30 are alternately stacked to form a filter element structure (refer to fig. 3 of the attached drawings of the specification for specific structure).

Referring to fig. 1 to 3 of the drawings of the specification, the conventional filter 10000 is disc-shaped, a water inlet 10000a is formed on the outer side surface of the filter 10000, and correspondingly, a water outlet 10000b is formed in the filter 10000, when filtering, the filter element forms high pressure on the outer side of the filter element under the action of the pump body, and forms low pressure on the inner side of the filter element, the filtrate to be filtered enters from the outer sides of the two filters 10000, is filtered by the filter paper between the two filters 10000, and then flows out through the water outlet 10000b in the two filters 10000. Apopore 10000b is the inclined setting that runs through, so upper and lower terminal surface and apopore 10000b of filter element 10000 can be accomplished through the once die sinking of the upper and lower both sides of mould. Because the water inlet 10000a is arranged on the outer side surface of the filter 10000, the outer side surface is perpendicular to the upper end surface and the lower end surface of the filter 10000 to press the filter paper 30, and the water inlet 10000a is on the arc surface, so if the molding of the upper end surface and the lower end surface and the processing of the water inlet 10000a on the arc surface are to be completed, the cost of the corresponding mold, such as the mold including the one-step molding of the water inlet, is very high, in order to reduce the cost, the molding of the upper end surface and the lower end surface and the water outlet 10000b are often completed through the mold, and then the outer side surface of the filter 10000 is perforated manually, however, the mode is not only low in efficiency and high in processing cost, but also is easy to cause the problems of too large opening or deviation due to manual error, which causes the displacement, deformation, uneven filtering and the like of the; in addition, because the degree of difficulty is great in seting up of the inlet opening 10000a of lateral surface, so general quantity of inlet opening 10000a can not set up too much, however, also can make pressure differential too big and lead to filter paper 30 inflation inhomogeneous like this, the damaged or unable tight filter piece 10000 that laminates, also can influence filterable effect like this, inlet opening 10000a is considered from processing ease and economic nature, the undersize can not be set for to the size, so seting up of hole also makes filter piece 10000's thickness can not set for too thin, whole thickness increases substantially, reach 13 to 15mm even.

In order to solve the above problems, it is necessary to provide a filter sheet.

Disclosure of Invention

An object of the present invention is to provide a filter sheet which can simplify a mold to reduce a processing cost and has advantages of a simple structure and an excellent filtering effect.

Another object of the present invention is to provide a laminated filter which can simplify a mold to reduce a process cost and has advantages of a simple mechanism and an excellent filtering effect.

Another object of the present invention is to provide a filtering apparatus which can simplify a mold to reduce a processing cost and has advantages of a simple mechanism and an excellent filtering effect.

In order to achieve the above object, the filter sheet provided by the present invention includes a filter sheet main body, a central shaft hole is formed in the middle of the filter sheet main body, an inner clamping edge is formed at the central shaft hole of the filter sheet main body, an outer clamping edge is formed at the outer edge of the filter sheet main body, an upper circulation groove located at the upper end surface of the filter sheet main body and a lower circulation groove located at the lower end surface of the filter sheet main body are formed between the inner clamping edge and the outer clamping edge, the inner clamping edge is provided with an opening communicated with the lower circulation groove, and the outer clamping edge is provided with a notch communicated with the upper circulation groove.

Compared with the prior art, the filter disc provided by the invention has the advantages that the gap communicated with the upper circulation groove is formed in the outer pressing edge, the traditional difficulty that holes are difficult to be formed in the outer pressing edge is overcome, the purposes of simplifying a processing mold and greatly reducing the production cost are achieved, the overall structure of the filter disc is simpler due to the arrangement of the gap, the thickness of the single filter disc is reduced by times, the thickness of a product can reach the thickness smaller than 6mm, if a higher mold processing technology is adopted, the product can be even thinner, the stacked thickness of the overall filter disc is reduced by times, more filter discs can be stacked in unit volume, and the filtering effect can be enhanced by times in the same volume. The filter sheet breaks through the traditional physical filtering structure theory, and on the aspect of small size, because the gaps are easy to process, the number of the gaps can be set to be multiple times of the number of the previous through holes, the force generated by the pressure difference between the front and the back of the filter paper is smaller than the structural strength of the filter paper, and the filter paper can not shift or deform, so that a complete filtering surface cavity is formed between the filter paper and the upper circulation groove. Meanwhile, the variable cross-section filter disc structure enables filtering sundries to be automatically filled at a possible leakage point along with the pressure difference, so that the filtering reliability is ensured.

Preferably, a plurality of the gaps are arranged along the central axis of the filter plate main body in the circumferential direction.

Specifically, the intervals between two adjacent notches are equal.

Preferably, the upper circulation groove is provided with an upper reinforcing rib for supporting the filter paper.

Specifically, the upper reinforcing rib is of an arc-shaped structure.

Specifically, the upper reinforcing ribs are arranged at intervals along the radial direction of the central axis of the filter plate main body to form reinforcing units, and the reinforcing units are arranged in an annular array along the central axis of the filter plate main body.

Preferably, the reinforcing unit has a fan shape.

Specifically, a flow channel is formed between two adjacent reinforcing units, and the flow channel is opposite to the notch.

Preferably, the lower through groove is provided with a lower reinforcing rib for supporting the filter paper.

Preferably, the lower reinforcing rib is of a strip structure.

Preferably, the lower reinforcing ribs are arranged at intervals along the circumferential direction of the central shaft of the filter plate main body.

In order to achieve the purpose, the invention provides a laminated filter which comprises a fixing frame, filter paper and the filter sheet, wherein the filter sheet and the filter paper are alternately arranged in sequence and are fixed through the fixing frame.

Compared with the prior art, the stacked filter has the advantages that the filter sheets are arranged, and the gaps of the filter sheets enable the stacked filter to be small in overall size and to be small in diameter and thickness, so that a greater number of filter sheets can be stacked in unit volume, the filtering effect is improved, or the size of the filter is directly reduced, the filter has the characteristic of miniaturization, and the use convenience and the flexibility of structural arrangement of the filter are greatly improved. The device has the advantages that various arrangement modes in various application scenes are possible, the floor area is reduced, the pipeline connection among the pump, the filter and the using device is simplified, and the installation and use cost is reduced. Meanwhile, the flow direction of traditional liquid filtration is reversed, the laminated filter is opposite to the traditional liquid flow direction, liquid flows to the outer side of the filter plate main body from the central shaft hole of the filter plate main body, deformation displacement among the plurality of filter plates can be uniformly distributed and cannot be accumulated at one position due to the increase of the notches from inside to outside, the uniformly distributed displacement size can be almost ignored compared with physical filtration, and the filtration is safe and reliable. In addition, the filter adopts an internal pressure type, so that a filter type without a pressure-resistant shell can be adopted, the problem that the pressure resistance of the shell is limited due to the process, the material and the structure is solved, and meanwhile, the problem that the air storage and accumulation influence the liquid quality and unsmooth exhaust due to the design without the shell is completely avoided.

In order to achieve the above object, the present invention provides a filter device including a frame body having a filter tank therein, a pump body having the filter tank therein, and the stacked filter described above, the pump body being attached to the frame body and communicating with the stacked filter.

The filter device of the invention has the advantages that the overall volume is reduced due to the improved structure of the filter sheet, so that the filter device is suitable for filter devices in various environments and has strong applicability.

Drawings

Fig. 1 is a schematic perspective view of a prior art filter.

Fig. 2 is another perspective view of a prior art filter.

Fig. 3 is a schematic perspective view of a prior art filter cartridge.

Fig. 4 is a schematic perspective view of the filter sheet of the present invention.

Fig. 5 is another perspective view of the filter of the present invention.

Fig. 6 is a schematic plan view of the filter sheet of the present invention in a bottom view.

Fig. 7 is a schematic plan view of the filter sheet of the present invention in a side view.

Fig. 8 is a schematic plan view of the filter sheet of the present invention in a top view.

FIG. 9 is a schematic perspective view of a stacked filter of the present invention.

Fig. 10 is a schematic perspective view of the filter device of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following detailed description is given with reference to the embodiments and the accompanying drawings.

Referring to fig. 4 to 9, the stacked filter 100 according to the present invention includes a fixing frame 20, a filter paper 30, and a filter sheet 10, wherein the filter sheet 10 and the filter paper 30 are alternately disposed in sequence and fixed by the fixing frame 20. Wherein, the cassette 10 includes cassette main part 1, central shaft hole 11 has been seted up at the middle part of cassette main part 1, the central shaft hole 11 department of cassette main part 1 has interior joint edge 2, interior joint edge 2 forms for the center pin by cassette 10 is upwards, lower both sides extend, interior joint edge 2 is the loop configuration, the outward flange department of cassette main part 1 has outer pressing edge 3, outer pressing edge 3 forms for upwards, lower both sides extend by the outward flange of cassette main part 1, outer pressing edge 3 is the loop configuration. When the filter sheets 10 and the filter paper 30 are alternately stacked in sequence, the central shaft holes 11 of the adjacent two layers of filter sheets 10, namely the upper and lower layers of filter sheets 10, are aligned with the central hole of the filter paper 30 between the two filter sheets, the inner clamping edges 2 of the adjacent two layers of filter sheets 10 are mutually clamped and clamp the filter paper 30, and the outer clamping edges 3 of the adjacent two layers of filter sheets 10 are jointly used for pressing the filter paper 30. Interior snap-in edge 2 and outer pressing edge 3 between form the last circulation groove 4 that is located filter plate main part 1 up end department and be located filter plate main part 1 down terminal surface department down downflow through groove 5, interior snap-in edge 2 sets up the opening 21 with downflow through groove 5 intercommunication, outer pressing edge 3 sets up the breach 31 with last circulation groove 4 intercommunication, the difficulty that is difficult to the trompil on outer pressing edge 3 in the tradition has been overcome in the setting of breach 31 is in order to reach the purpose of simplifying processing mould and reducing manufacturing cost by a wide margin, the setting of breach 31 can make filter plate 10 structure whole become simpler, the thickness of monolithic filter plate 10 reduces at double, this will make the thickness that whole filter plate 10 piles up reduce at double, can pile up filter plate 10 that the quantity is more in the unit volume, thereby can strengthen filterable effect at double in the same volume. The filter sheet 10 breaks through the theory cognition of the traditional physical filtering structure, on the aspect of a micro size, as the notches 31 are easy to process, the size can be set to be smaller and reaches millimeter or even micron level, the number of the notches 31 can be simultaneously set to be multiple times or even tens of times of the number of the previous through holes, the force generated by the pressure difference between the front and the back of the filter paper 30 on a minimal plane is smaller than the structural strength of the filter paper 30, and the filter paper 30 can not shift or deform extremely micro and the like, so that a complete filtering surface cavity is formed between the filter paper 30 and the upper circulation groove 4. Meanwhile, the variable cross-section filter disc structure can enable the filtered impurity clusters to automatically fill in the possible leakage points along the direction of pressure difference and increase the pressure difference, thereby ensuring that the reliability of filtering is improved.

Referring to fig. 9 to 10, the stacked filter 100 of the present invention may be applied to a filtering apparatus 1000, and the filtering apparatus 1000 may be a filtering apparatus 1000 with a filter, such as a liquid medicine filtering machine, a swimming pool filtering machine, or a sewage filtering machine, but is not limited thereto. The filtering apparatus 1000 includes a frame body 200, a pump body 300 and a stacked filter 100, the frame body 200 has a filtering tank 200a, the filtering tank 200a contains liquid, the stacked filter 100 is disposed in the filtering tank 200a, in this embodiment, the stacked filter 100 is provided with a plurality of stacked filters 100, the plurality of stacked filters 100 are arranged in the filtering tank 200a, the pump body 300 is mounted on the frame body 200 and is communicated with the stacked filter 100, the pump body 300 operates to make the liquid enter from a central axial hole 11 of the filter body 1, i.e., the central portion of the filter body 1 forms high pressure, the edge of the filter body 1 forms low pressure, the liquid flows in from the central axial hole 11 of the upper filter 10, the lower through groove 5 of the upper filter 10 and the upper circulation groove 4 of the lower filter 10 are spliced together to circulate in a cavity, the liquid is pressed to the filter paper 30 in the circulation cavity, the liquid filtered by the filter paper 30 flows out from the gap 31 of the lower filter, thereby achieving filtration. The traditional liquid filtering flow direction is overturned, the laminated filter 100 of the invention is opposite to the traditional liquid flow direction, the liquid flows from the central shaft hole 11 of the filter plate main body 1 to the outer side of the filter plate main body 1, the deformation displacement among the plurality of filter plates 10 can be uniformly distributed without accumulating at one position due to the increase of the notches 31 from the inside to the outside, the uniformly distributed displacement size is almost negligible relative to the physical filtering, and the filtering becomes safe and reliable. In addition, the laminated filter 100 adopts an internal pressure type, so that a filter type without a pressure-resistant shell can be adopted, the problem that the pressure resistance of the shell is limited due to the process, the material and the structure is solved, and meanwhile, the problem that the air storage and accumulation influence the liquid quality and unsmooth air exhaust due to the shell-free design is completely avoided. The device has the advantages that multiple arrangement modes in various application scenes are possible, the occupied area of points is reduced, the pipeline connection among the pump, the filter and the using device is simplified, and the installation and use cost is reduced. It is understood that the upper filter sheet 10 and the lower filter sheet 10 are oppositely stacked filter sheets 10 with the same structure, and the upper and lower are only the relative positions of the two filter sheets 10.

Referring to fig. 4 to 8, the plurality of notches 31 are circumferentially arranged along the central axis of the filter main body 1, and preferably, the intervals between two adjacent notches 31 are equal, so as to improve the uniformity of liquid discharge. In the present embodiment, 57 notches 31 are provided, and the notches 31 are arranged at equal intervals in a group of three. Because the traditional porous structure is difficult to be arranged, the size of each hole is larger, so that the thickness of the outer pressing edge 3 is larger, the arrangement of the notch 31 overcomes the difficulty of arrangement, the notch 31 can be arranged to be smaller, correspondingly, the thickness of the outer pressing edge 3 can be arranged to be very small, and the filter plate 10 can be very light and thin as a whole and has smaller volume.

Referring to fig. 4 to 8, the upper circulation groove 4 is provided with an upper reinforcing rib 61 for supporting the filter sheet 10, the upper reinforcing rib 61 can reinforce the overall structure of the filter sheet 10 to avoid deformation, and the upper reinforcing rib 61 can support the filter paper 30 and press the filter sheet 10 to press the liquid against the filter paper 30, thereby achieving the filtering effect. Preferably, the upper rib 61 has an arc-shaped structure, but is not limited thereto. Meanwhile, the upper reinforcing ribs 61 are arranged at intervals along the radial direction of the central shaft of the filter sheet main body 1 to form the reinforcing units 6, the reinforcing units 6 are in an annular array along the central shaft of the filter sheet main body 1, the reinforcing units 6 are fan-shaped, but the invention is not limited to this, a circulation channel 7 is formed between every two adjacent reinforcing units 6, and the circulation channel 7 is over against the notch 31 to guide the liquid to the notch 31, so that the liquid can flow more smoothly, and further a better filtering effect can be achieved.

Referring to fig. 4 to 8, the lower through groove 5 is provided with a lower reinforcing rib 8 for supporting the filter paper, the lower reinforcing rib 8 can not only reinforce the overall structure of the filter sheet 10 to avoid deformation, but also the lower reinforcing rib 8 can support the filter paper 30 and press the filter sheet 10 to press the liquid against the filter paper 30, thereby achieving the filtering effect. Preferably, the lower reinforcing ribs 8 are of a strip structure, the lower reinforcing ribs 8 are arranged along the radial direction of the filter plate main body 1, and the lower reinforcing ribs 8 are arranged at intervals along the circumferential direction of the central shaft of the filter plate main body 1. The filter sheets 10 are stacked up and down to complete the filtration, so the lower reinforcing rib 8 of the upper filter sheet 10 is opposite to the upper reinforcing rib 61 of the lower filter sheet 10, and the upper reinforcing rib 61 with the circular arc structure and the lower reinforcing rib 8 with the strip structure can play a role in guiding together, so that the liquid is pressed to the filter paper 30 and then discharged from the gap 31.

In summary, referring to fig. 1 to 10, the operation of the filtering device 1000 of the present invention will be described in detail:

the pump body 300 works to enable liquid in the filter tank 200a to enter from the central shaft hole 11 of the filter sheet main body 1, namely, the central part of the filter sheet main body 1 forms high pressure, the edge of the filter sheet main body 1 forms low pressure, the liquid flows in from the opening 21 of the inner clamping edge 2 at the central shaft hole 11 of the upper layer filter sheet 10, the lower through groove 5 of the upper layer filter sheet 10 and the upper through groove 4 of the lower layer filter sheet 10 are spliced together to form a flow cavity, the liquid presses the filter paper 30 in the flow cavity to enable the filter paper 30 to be in high pressure, and the liquid filtered by the filter paper 30 flows out from the gap 31 of the lower layer filter sheet 10, so that the filtering is realized.

Through compressing tightly the breach 31 that the edge 3 offered and last circulation groove 4 intercommunication outside, overcome the difficulty that is difficult to compress tightly the trompil on the edge 3 outside traditionally in order to reach the purpose of simplifying the processing mould and reducing manufacturing cost by a wide margin, the setting of breach 31 can make the whole simpler that becomes of filter structure, the thickness of monolithic filter plate 10 reduces at double, make the product can reach the thickness that is less than 6mm, if adopt higher mould processing technology, can be thinner even, this will make the thickness that whole filter plate 10 piles up reduce at double, can pile up the filter plate 10 that the quantity is more in the unit volume, thereby can strengthen filterable effect at double in the same volume. The filter sheet 10 breaks through the traditional physical filtering structure theory, and on the aspect of a micro size, because the notches 31 are easy to process, the number of the notches 31 can be set to be multiple times of the number of the previous through holes, the force generated by the pressure difference of the filter paper 30 before and after is smaller than the structural strength of the filter paper 30, the filter paper 30 can not shift or deform, and the like, so that a complete filtering surface cavity is formed between the filter paper 30 and the upper circulation groove 4. Meanwhile, the variable cross-section filter disc structure enables filtering sundries to be automatically filled at a possible leakage point along with the pressure difference, so that the filtering reliability is ensured.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims (10)

1. The filter disc is characterized by comprising a filter disc main body, wherein a central shaft hole is formed in the middle of the filter disc main body, an inner clamping edge is arranged at the central shaft hole of the filter disc main body, an outer clamping edge is arranged at the outer edge of the filter disc main body, an upper circulation groove located at the upper end face of the filter disc main body and a lower circulation groove located at the lower end face of the filter disc main body are formed between the inner clamping edge and the outer clamping edge, an opening communicated with the lower circulation groove is formed in the inner clamping edge, and a notch communicated with the upper circulation groove is formed in the outer clamping edge.

2. A filter plate as in claim 1 wherein a plurality of said indentations are circumferentially disposed along a central axis of said filter plate body.

3. A filter plate as claimed in claim 1 wherein the upper flow channel is provided with an upper rib for supporting the filter paper.

4. A filter plate as defined in claim 3 wherein said upper reinforcing rib has a circular arc configuration.

5. A filter plate as claimed in claim 3 wherein said upper reinforcing ribs are spaced radially of the central axis of said filter plate body to form reinforcing units, said reinforcing units being in an annular array along the central axis of said filter plate body.

6. A filter plate as in claim 5 wherein said reinforcing elements are fan-shaped.

7. A filter plate as claimed in claim 5 wherein a flow passage is defined between adjacent ones of said reinforcing elements, said flow passage facing said gap.

8. A filter plate as claimed in claim 1 wherein said down flow channel is provided with down ribs for supporting filter paper.

9. A laminated filter comprising a holder and a filter paper, further comprising a filter sheet according to any one of claims 1 to 8, wherein the filter sheet and the filter paper are alternately arranged in sequence and fixed by the holder.

10. A filtration device comprising a frame and a pump body, and further comprising the stacked filter of claim 9, wherein the frame has a filter tank therein, the stacked filter is disposed in the filter tank, and the pump body is mounted to the frame and is in communication with the stacked filter.

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