CN105381639B - Front-mounted Filter device - Google Patents
Front-mounted Filter device Download PDFInfo
- Publication number
- CN105381639B CN105381639B CN201510873283.5A CN201510873283A CN105381639B CN 105381639 B CN105381639 B CN 105381639B CN 201510873283 A CN201510873283 A CN 201510873283A CN 105381639 B CN105381639 B CN 105381639B
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- Prior art keywords
- interface
- filter
- bottle body
- drainage tube
- rotary
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000007790 scraping Methods 0.000 claims abstract description 27
- 239000011229 interlayer Substances 0.000 claims abstract description 16
- 238000011045 prefiltration Methods 0.000 claims description 35
- 239000012535 impurity Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000005202 decontamination Methods 0.000 claims description 3
- 230000003588 decontaminative effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 235000005118 dietary health Nutrition 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
Abstract
The front filter comprises a connecting part, a bottle body, a flexible scraping brush bar, a filter cylinder, a rotating component, a drainage tube and a blow-down valve, and is characterized in that a water inlet, a water outlet, a bottle body interface, a filter element interface, a drainage tube interface and a blow-down valve interface are arranged on a connecting part body, one end of the drainage tube is fixedly connected with the drainage tube interface, one end of the filter cylinder is connected with the filter cylinder interface, the other end is sleeved outside the drainage tube and forms sealing fit with the contact part of the drainage tube, one end of the bottle body is fixedly connected with the bottle body interface through threads, the other end of the bottle body is provided with a rotating assembly, the flexible scraping brush strip is arranged on the inner wall of the bottle body or the rotating assembly and is always in close contact with the outer surface of the filter cylinder, the drain valve interface is arranged at the bottom end of an interlayer formed between the inner wall of the bottle body and the outer wall of the filter cylinder and is communicated with the interlayer, and the drain valve is connected with the drain valve interface; preferably, a three-way valve is further provided in the connecting portion.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a technology of a pre-filter.
Background
With the improvement of the living standard of people along with the progress of technology, people begin to have higher demands on water and dietary health in daily life. The secondary pollution of rust, sediment and the like in the pipelines causes the water quality of domestic water to be poor and the control of water equipment to be malfunctioning, reduces the service life of other domestic appliances related to water and even generates huge potential safety hazards, so that from the aspect of large environment, all household users need to install a pre-filter to improve the water quality and protect the domestic water equipment. The pre-filter is a secondary pollution gram, is a reliable impurity filtering device.
The pre-filters in the current market mainly comprise a forward flushing type, a back flushing type, a siphon flushing type and the like. However, different types of pre-filters have different problems:
the flushing strength of the forward flushing filter is very weak, the filter element is easy to be blocked, smaller impurities cannot be flushed out, the filter element is embedded deeper and tighter, secondary pollution is easy to occur, and a consumer needs to open the shell to take the filter element out of the toothbrush for brushing, so that the time and the labor are consumed.
The siphon type pre-filter product has a complex structure, is not thoroughly washed, is deeper and tighter in the filter element due to impurities embedded in the filter element if the water quality is relatively poor, finally causes the blocking of the filter element, causes secondary pollution, and is very difficult to maintain once the blocking of the filter element. On the other hand, most siphon-type prefilter products sacrifice filtration accuracy for flushing, and filtration accuracy is typically above 50 microns. Such as Chinese patent: the prefilter technology disclosed in 2015152203. X (application number) is a typical siphon type prefilter.
Chinese patent: 201510243765.2 (application number) discloses a new technology, the name of which is 'bidirectional powerful spray washing prefilter', integrates two functions of forward flushing and back flushing, basically solves the defect that the prefilter in the current market has only one-way flushing function, but has the defects of excessively complex internal structure, influenced water flow and higher manufacturing cost.
At present, compared with other prefilters, the back flushing type prefilter has some improvements in technology, but the filter flask is required to be opened to take out the filter screen when the filter screen is blocked by the trapped matters in the filter screen holes, and auxiliary brushes (which can be replaced by toothbrushes), air guns and other tools are used for cleaning, so that the filter screen brings trouble to users.
Currently, the pre-filter on the market is approximately T-shaped, and if the post-reconstruction access of the T-shaped pre-filter is required for the owners of the old and decorated communities, the post-reconstruction access is difficult due to the limitation of the space in the water meter box.
In view of the problems with the various types of prefilters described above and the desire for a prefilter of better function and quality, there is a need for improvements to the current prefilters.
Disclosure of Invention
The invention aims at solving the problems in the prior art, and provides a pre-filter which is reasonable in design and simple in structure, so that the pre-filter can realize powerful mechanical brushing of impurities on the outer surface of a filter cylinder by the relative rotation of a flexible scraping brush strip and the outer surface of the filter cylinder which are preset in the bottle body when the pre-filter performs back flushing.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the front-mounted filter comprises a connecting part, a bottle body, a flexible scraping strip, a filter cartridge, a rotating assembly, a drainage tube and a blow-down valve, and is characterized in that a water inlet, a water outlet, a bottle body interface, a filter element interface, a drainage tube interface and a blow-down valve interface are arranged on a connecting part body, and the bottle body interface, the filter element interface and the drainage tube interface are sequentially arranged at the same axis from outside to inside and have the same direction; one end of the drainage tube is fixedly connected with the drainage tube interface, one end of the filter tube is connected with the filter tube interface, the other end of the filter tube is sleeved outside the drainage tube and forms sealing fit with the contact position of the filter tube, one end of the bottle body is fixedly connected with the bottle body interface through threads, the other end of the bottle body is provided with a rotating assembly, the flexible scraping brush strip is arranged on the inner wall of the bottle body or the rotating assembly and is always in close contact with the outer surface of the filter tube, the drain valve interface is arranged at the bottom end of an interlayer formed between the inner wall of the bottle body and the outer wall of the filter tube and is communicated with the interlayer, and the drain valve is connected with the drain valve interface; the water filter is characterized in that water entering from a water inlet is firstly guided into the interlayer through the drainage tube, then filtered by a filter screen on the outer surface of the filter cartridge, enters the filter cartridge, and then flows out from a water outlet to finish the filtration of the water; the filter is characterized in that if the flexible scraping brush strip is arranged on the inner wall of the bottle body, the filter cylinder is driven to rotate by rotating the rotating assembly, and the impurities on the surface of the filter screen are removed by the relative scraping brush movement of the flexible scraping brush strip; if the flexible scraping brush strip is arranged on the rotating assembly, the flexible scraping brush strip is directly scraped from the outer surface of the filter cylinder by rotating the rotating assembly, so that the aim of removing impurities on the surface of the filter screen is fulfilled.
The pre-filter is characterized in that the flexible scraping brush strip is arranged on the inner wall of the bottle body, one end of the filter cylinder is connected with the filter cylinder interface and forms dynamic sealing fit at the joint through a first sealing ring, the other end is sleeved outside the drainage tube and forms dynamic sealing fit at the contact position through a second sealing ring, and a convex body with a hexagonal or polygonal shape is arranged at the port of the flexible scraping brush strip; the rotary assembly comprises a knob handle and a rotary plug, the rotary plug is arranged in one port of the bottle body, the upper end of the rotary plug is connected with the rotary handle, the lower end of the rotary plug is matched with the convex body, and a third sealing ring and a sealing gasket are arranged on the periphery of the middle section of the rotary plug and form dynamic sealing fit with the inner wall of the port of the bottle body.
The front filter is characterized in that the flexible scraping brush bar is arranged on the rotating assembly, one end of the filter cylinder is connected with the filter cylinder interface through threads, the other end of the filter cylinder is sleeved outside the drainage tube and is in sealing fit with the contact part, the rotating assembly comprises a knob handle, a rotating plug and a rotating round frame, the rotating plug is arranged in one port of the bottle body, the upper end of the rotating plug is connected with the rotating handle, the lower end of the rotating plug is connected with the rotating round frame, and a third sealing ring and a sealing gasket are arranged on the periphery of the middle section of the rotating plug and form dynamic sealing fit with the inner wall of one port of the bottle body.
The prefilter is characterized in that a three-way valve is further arranged in the connecting part, three ports of the three-way valve respectively correspond to the water inlet, the water outlet and the drainage tube interface, the water flow direction is regulated through the three-way valve, and water flow can flow out of the drainage tube or be communicated with the water outlet to enter the inner cavity of the filter tube, so that a backwashing decontamination mode is formed.
The prefilter is characterized in that the rotary round frame and the rotary plug are of an integrated structure.
The prefilter is characterized in that the bottle body is a transparent plastic injection molding piece, the big port of the bottle body is fixedly connected with the bottle body interface through threads, a fourth sealing ring is arranged at the joint, the rotary assembly is arranged in the small port of the bottle body, and the appearance of the small port of the bottle body is hexagonal.
The prefilter is characterized in that a number for recording date is arranged on the outer peripheral surface of the knob handle.
The prefilter is characterized in that a nozzle for connecting a hose is arranged at the outlet of the blow-down valve.
Compared with the prior art, the novel filter has the advantages of reasonable design and simple structure, not only has the function of back flushing, but also can clean the impurities on the outer surface of the filter cylinder by mechanical scraping in the back flushing process, greatly improves the cleaning convenience of the front filter, correspondingly prolongs the service life of the filter cylinder and has huge social benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. The drawings are provided for reference and illustration only and are not intended to limit the invention.
FIG. 1 is a schematic diagram of the prefilter of embodiment 1 provided by the present invention;
FIG. 2 is a top view of the E-E cross section provided by the present invention;
FIG. 3 is a schematic view of a connecting portion according to the present invention;
FIG. 4 is a schematic view of the appearance of a pre-filter according to the present invention;
FIG. 5 is a schematic view of a filter cartridge according to the present invention;
FIG. 6 is a top view of a filter cartridge corresponding to FIG. 5 provided by the present invention;
FIG. 7 is a schematic cross-sectional view of a knob stem provided by the present invention;
FIG. 8 is a schematic view of a rotary plug according to the present invention;
FIG. 9 is a schematic view of the appearance structure of a bottle body according to the present invention;
FIG. 10 is a top view corresponding to FIG. 9 provided by the present invention;
FIG. 11 is a bottom view corresponding to FIG. 9 provided by the present invention;
FIG. 12 is a schematic view of a drainage tube according to the present invention;
fig. 13 is a schematic view showing the structure of a prefilter according to embodiment 2 of the present invention;
fig. 14 is a schematic structural diagram of the integration of the rotating assembly, the rotating circular frame and the flexible scraping brush strip in embodiment 2 provided by the invention;
fig. 15 is a schematic view showing the external appearance of a prefilter with a three-way valve in the interior of a connection portion according to embodiment 3 of the present invention.
In the figure, a connecting part 1, a bottle body 2, a flexible scraping brush strip 3, a filter cartridge 4, a rotary assembly 5, a drainage tube 6, a blow-off valve 7, an interlayer 8, a three-way valve 9, a water inlet 10, a water outlet 11, a bottle body interface 12, a filter cartridge interface 13, a drainage tube interface 14, a blow-off valve interface 15, a fourth sealing ring 20, a first sealing ring 40, a convex body 41, a knob handle 50, a rotary plug 51, a third sealing ring 52, a sealing gasket 53, a rotary circular frame 54, a second sealing ring 60 and a nozzle 70.
Detailed Description
Example 1:
as shown in fig. 1, 2, 3, 4, 5, 6, 7, 9, 10, 11 and 12, a prefilter includes a connection portion 1, a bottle 2, a flexible wiper strip 3, a filter cartridge 4, a rotating assembly 5, a drain tube 6, and a drain valve 7.
As shown in fig. 3, a water inlet 10, a water outlet 11, a bottle body interface 12, a filter cartridge interface 13, a drainage tube interface 14 and a drain valve interface 15 are arranged on the connecting part 1 body, and the bottle body interface 12, the filter cartridge interface 13 and the drainage tube interface 14 are sequentially arranged from outside to inside at the same axial center and the openings are arranged in the same direction;
one end of the drainage tube 6 is fixedly connected with the drainage tube interface 14;
one end of the filter cartridge 4 is connected with the filter cartridge interface 13, and the other end is sleeved outside the drainage tube 6 and forms sealing fit with the contact part of the drainage tube 6;
one end of the bottle body 2 is fixedly connected with the bottle body interface 12 through threads, and the other end is provided with a rotating component 5;
the flexible scraping brush strip 3 is arranged on the inner wall of the bottle body 2 and is always in close contact with the outer surface of the filter cylinder 4;
the drain valve interface 15 is arranged at the bottom end of an interlayer 8 formed between the inner wall of the bottle body 2 and the outer wall of the filter cylinder 4 and is communicated with the interlayer 8, and the drain valve 7 is connected with the drain valve interface 15;
the bottle body 2 is a transparent plastic injection molding part, a big port and a bottle body interface 12 of the bottle body are fixed through threaded connection, a fourth sealing ring 20 is arranged at the joint, a rotating assembly 5 is arranged in a small port of the bottle body, the appearance of the small port of the bottle body is hexagonal, and the bottle body can be conveniently screwed by using a wrench.
In this embodiment, the outer circumference of the knob handle 50 is provided with numerals for recording date, and the outlet of the drain valve 7 is provided with a nozzle 70 for hose connection.
In this embodiment, since the filter cartridge needs to rotate, the connection between one end of the filter cartridge and the filter cartridge interface and the cooperation between the other end of the filter cartridge and the drain tube must reach a state that can rotate and can be sealed, and the implementation is as follows: one end of the filter cartridge 4 is connected with the filter cartridge interface 13 and forms dynamic sealing fit at the connection part through a first sealing ring 40, the other end is sleeved outside the drainage tube 6 and forms dynamic sealing fit at the contact part through a second sealing ring 60, and a convex body 41 with a hexagonal or polygonal shape is arranged at the port of the filter cartridge; the rotary assembly 5 comprises a knob handle 50 and a rotary plug 51, the rotary plug 51 is arranged in one port of the bottle body 2, the upper end of the rotary plug 51 is connected with the rotary handle 50, the lower end of the rotary plug is matched with the convex body 41, and a third sealing ring 52 and a sealing gasket 53 are arranged on the periphery of the middle section and form dynamic sealing fit with the inner wall of the port of the bottle body 2.
The working principle of the water filtration of the embodiment is that the water entering from the water inlet 10 is firstly guided into the interlayer 8 through the drainage tube 6, then filtered by the filter screen on the outer surface of the filter cartridge 4, enters the filter cartridge 4, and then flows out from the water outlet 11 to finish the filtration of the water;
the sewage disposal working principle of this embodiment is as follows, the flexible scraping brush strip 3 is arranged on the inner wall of the bottle body 2, the rotation of the filter cylinder 4 is driven by the rotary component 5, the relative scraping brush movement is formed with the flexible scraping brush strip 3 to remove the impurity on the surface of the filter screen, meanwhile, the sewage disposal valve 7 is opened, and the removed impurity is discharged.
Example 2:
as shown in fig. 2, 3, 4, 7, 8, 9, 11, 12, 13 and 14, a prefilter includes a connection portion 1, a bottle 2, a flexible wiper strip 3, a filter cartridge 4, a rotating assembly 5, a drain tube 6, and a drain valve 7.
As shown in fig. 3, a water inlet 10, a water outlet 11, a bottle body interface 12, a filter cartridge interface 13, a drainage tube interface 14 and a drain valve interface 15 are arranged on the connecting part 1 body, and the bottle body interface 12, the filter cartridge interface 13 and the drainage tube interface 14 are sequentially arranged from outside to inside at the same axial center and the openings are arranged in the same direction;
one end of the drainage tube 6 is fixedly connected with the drainage tube interface 14;
one end of the filter cartridge 4 is connected with the filter cartridge interface 13, and the other end is sleeved outside the drainage tube 6 and forms sealing fit with the contact part of the drainage tube 6;
one end of the bottle body 2 is fixedly connected with the bottle body interface 12 through threads, and the other end is provided with a rotating component 5;
the flexible scraping brush strip 3 is arranged on the rotating assembly 5 and is always in close contact with the outer surface of the filter cylinder 4;
one end of the filter cartridge 4 is connected with the filter cartridge interface 13 through threads, and the other end is sleeved outside the drainage tube 6 and is in sealing fit at the contact position;
the rotary assembly 5 comprises a knob handle 50, a rotary plug 51 and a rotary round frame 54, the rotary plug 51 is arranged in one port of the bottle body 2, the upper end of the rotary plug is connected with the rotary handle 50, the lower end of the rotary plug is connected with the rotary round frame 54, and the periphery of the middle section is provided with a third sealing ring 52 and a sealing gasket 53 which form dynamic sealing fit with the inner wall of one port of the bottle body 2; as shown in fig. 14, in the present embodiment, the rotary round frame 54 and the rotary plug 51 are of an integral structure;
the drain valve interface 15 is arranged at the bottom end of an interlayer 8 formed between the inner wall of the bottle body 2 and the outer wall of the filter cylinder 4 and is communicated with the interlayer 8, and the drain valve 7 is connected with the drain valve interface 15;
the bottle body 2 is a transparent plastic injection molding part, a big port and a bottle body interface 12 of the bottle body are fixed through threaded connection, a fourth sealing ring 20 is arranged at the joint, a rotating assembly 5 is arranged in a small port of the bottle body, the appearance of the small port of the bottle body is hexagonal, and the bottle body can be conveniently screwed by using a wrench.
In this embodiment, the outer circumference of the knob handle 50 is provided with numerals for recording date, and the outlet of the drain valve 7 is provided with a nozzle 70 for hose connection.
The working principle of the water filtration of the embodiment is that the water entering from the water inlet 10 is firstly guided into the interlayer 8 through the drainage tube 6, then filtered by the filter screen on the outer surface of the filter cartridge 4, enters the filter cartridge 4, and then flows out from the water outlet 11 to finish the filtration of the water;
the sewage disposal working principle of this embodiment is as follows, the flexible scraping brush bar 3 is arranged on the rotating component 5, the flexible scraping brush bar 3 is directly scraped from the outer surface of the filter cylinder 4 through the rotating component 5, the aim of removing impurities on the surface of the filter screen is achieved, meanwhile, the sewage disposal valve 7 is opened, and the removed impurities are discharged.
Example 3:
as shown in fig. 15, a three-way valve 9 is further disposed in the connection portion 1, three ports of the three-way valve 9 respectively correspond to a water inlet 10, a water outlet 11 and a drainage tube interface 14 on the connection portion 1, and the three-way valve 9 is used for adjusting the water flow direction, so that the water flow can flow out of the drainage tube 6 or be communicated with the water outlet 11 to enter the inner cavity of the filter cylinder 4, and a back flushing decontamination mode is formed.
In this embodiment, the other embodiments are similar to those described in embodiment 1 or embodiment 2, and will not be described in detail here.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms of a connection, a bottle, a flexible wiper strip, a filter cartridge, a rotating assembly, a drain, a blow down valve, an interlayer, a three-way valve, a water inlet, a water outlet, a bottle interface, a filter cartridge interface, a drain interface, a blow down valve interface, a fourth seal, a first seal, a boss, a knob stem, a rotating plug, a third seal, a gasket, a rotating circular frame, a second seal, a nozzle, etc., are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (5)
1. The front-mounted filter comprises a connecting part (1), a bottle body (2), a flexible scraping brush strip (3), a filter cartridge (4), a rotating assembly (5), a drainage tube (6) and a blow-down valve (7), and is characterized in that a water inlet (10), a water outlet (11), a bottle body interface (12), a filter cartridge interface (13), a drainage tube interface (14) and a blow-down valve interface (15) are arranged on a connecting part (1) body, and the bottle body interface (12), the filter cartridge interface (13) and the drainage tube interface (14) are sequentially arranged from outside to inside at the same axis and in the same direction; one end of the drainage tube (6) is fixedly connected with the drainage tube interface (14), one end of the filter tube (4) is in threaded connection with the filter tube interface (13), the other end of the filter tube is sleeved outside the drainage tube (6) and forms sealing fit with the contact part of the filter tube, one end of the bottle body (2) is fixedly connected with the bottle body interface (12) through threads, the other end of the bottle body is provided with the rotating assembly (5), the flexible scraping brush strip (3) is arranged on the rotating assembly (5) and is always in tight contact with the outer surface of the filter tube (4), the blow-off valve interface (15) is arranged at the bottom end of an interlayer (8) formed between the inner wall of the bottle body (2) and the outer wall of the filter tube (4) and is communicated with the interlayer (8), and the blow-off valve (7) is connected with the blow-off valve interface (15); the water entering from the water inlet (10) is firstly guided into the interlayer (8) through the drainage tube (6), filtered by the filter screen on the outer surface of the filter cylinder (4), enters the filter cylinder (4), and flows out from the water outlet (11) to finish the filtering of the water; the rotary assembly (5) comprises a knob handle (50), a rotary plug (51) and a rotary round frame (54), the rotary plug (51) is arranged in one port of the bottle body (2), the upper end of the rotary plug is connected with the knob handle (50), the lower end of the rotary plug is connected with the rotary round frame (54), a third sealing ring (52) and a sealing gasket (53) are arranged on the periphery of the section and form dynamic sealing fit with the inner wall of one port of the bottle body (2), the flexible scraping brush strip (3) is arranged on the rotary round frame (54) of the rotary assembly (5), and the flexible scraping brush strip (3) is directly scraped from the outer surface of the filter cylinder (4) through rotating the rotary assembly (5), so that the aim of removing impurities on the surface of a filter screen is achieved; the outlet of the blow-down valve (7) is provided with a nozzle (70) for connecting a hose.
2. The prefilter of claim 1, wherein a three-way valve (9) is further disposed in the connection portion (1), three ports of the three-way valve (9) respectively correspond to the water inlet (10), the water outlet (11) and the drainage tube interface (14), and the direction of water flow is regulated by the three-way valve (9), so that water flow can flow out of the drainage tube (6) or be communicated with the water outlet (11) to enter the inner cavity of the filter tube (4) to form a backwash decontamination mode.
3. A prefilter according to claim 1, wherein said rotary circular frame (54) and rotary plug (51) are of unitary construction.
4. A prefilter according to claim 1, wherein the bottle (2) is a transparent plastic injection-molded part, the large port of which is fixed to the bottle interface (12) by threaded connection, and a fourth sealing ring (20) is provided at the connection, the small port of which is internally provided with the rotating assembly (5), and the small port of which has a hexagonal shape.
5. A prefilter according to claim 1, wherein the knob (50) has a number for recording the date on its outer peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873283.5A CN105381639B (en) | 2015-12-02 | 2015-12-02 | Front-mounted Filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873283.5A CN105381639B (en) | 2015-12-02 | 2015-12-02 | Front-mounted Filter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105381639A CN105381639A (en) | 2016-03-09 |
| CN105381639B true CN105381639B (en) | 2024-02-06 |
Family
ID=55414799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510873283.5A Active CN105381639B (en) | 2015-12-02 | 2015-12-02 | Front-mounted Filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105381639B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889013A (en) * | 2018-06-19 | 2018-11-27 | 李渊 | A kind of fore filter |
| CN108837577A (en) * | 2018-06-19 | 2018-11-20 | 李渊 | A kind of fore filter built in blowdown valve |
| CN108837578A (en) * | 2018-06-28 | 2018-11-20 | 李渊 | A kind of inversion type fore filter |
| CN109430150A (en) * | 2018-08-30 | 2019-03-08 | 中山市创星电器有限公司 | A kind of external-mounted filtering bucket convenient for disassembly and assembly |
| IT201900004177A1 (en) * | 2019-03-22 | 2020-09-22 | Acqua Brevetti S R L | IMPROVED FILTERING DEVICE FOR HYDRAULIC SYSTEMS |
| CN111249785B (en) * | 2020-02-18 | 2021-07-09 | 扬州上源环保科技有限公司 | Filter |
| CN113432374A (en) * | 2021-07-30 | 2021-09-24 | 浙江星星冷链集成股份有限公司 | Water pan assembly for refrigerator |
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| EP2561913A1 (en) * | 2011-08-26 | 2013-02-27 | MAHLE International GmbH | Filtration device |
| CN104258628A (en) * | 2014-10-16 | 2015-01-07 | 海宁市水享净水设备有限公司 | Filter |
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| CN105381639A (en) | 2016-03-09 |
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