CN103372340B - Back-flush-type water filter - Google Patents
Back-flush-type water filter Download PDFInfo
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- CN103372340B CN103372340B CN201210113275.7A CN201210113275A CN103372340B CN 103372340 B CN103372340 B CN 103372340B CN 201210113275 A CN201210113275 A CN 201210113275A CN 103372340 B CN103372340 B CN 103372340B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 238000001914 filtration Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000011010 flushing procedure Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 102000010637 Aquaporins Human genes 0.000 claims description 12
- 108010063290 Aquaporins Proteins 0.000 claims description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 14
- 102000004392 Aquaporin 5 Human genes 0.000 description 10
- 108090000976 Aquaporin 5 Proteins 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 108091006146 Channels Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
A kind of Back-flush-type water filter, comprising: water inlet (16) and delivery port (18); Housing (2), housing is limited with cavity (20), and the current wherein flowed into from water inlet flow out from delivery port after cavity; Filter element (3), filter element to be placed in cavity and to comprise at least one Part I opened to cavity (32) and at least one has the Part II (34) of filter screen (30); With water (flow) direction switching mechanism (4), water (flow) direction switching mechanism is configured to current are changed between normal filtering operation and backwash operation; Wherein when water (flow) direction switching mechanism is switched to normal filtering operation, the Part I that current open from least one to cavity flows to through filter screen the Part II that at least one has filter screen, thus realizes water filtration; And when water (flow) direction switching mechanism is switched to backwash operation, the Part II that current have filter screen from least one flows at least one Part I opened to cavity through filter screen, thus realize the flushing to the impurity be deposited on filter screen.
Description
Technical field
The present invention relates to daily life tools field, particularly relate to a kind of Back-flush-type water filter for Drinking Water.
Background technology
Water filter of registering one's residence to be arranged on the main water inlet pipe of family after water meter usually, is mainly used in tackling granule foreign, silt and the iron rust etc. in running water.The effect of this water filter is to protect the water equipments such as the dish-washing machine in downstream and the higher water filter of direct drinking of filtering accuracy.In the market, except filter core disposal type is registered one's residence except water filter, also there is polytype non-disposal type and to register one's residence water filter, at large, these non-disposal types water filter of registering one's residence adopts stainless steel filtering net as filter medium substantially.Usually, these non-disposal types water filter of registering one's residence adopts various structure regularly to implement flushing operation to stainless steel filtering net, to reach self-cleaning object.
Such as, american documentation literature US20020008068 discloses a kind of equipment for backflushing fluid filter system and method.Filter wherein comprises filter chamber, be placed in the hollow filter net of filter chamber, be arranged on for fluid being introduced after filtering the entrance structure of cavity outside screen pack, and, be arranged in screen pack for backflush liquid being ejected into the backflush unit of the inner surface of screen pack.In technical scheme disclosed in above-mentioned patent document, need from the backflush unit added specially, spray backflush liquid and realize cleaning the flushing of screen pack.
American documentation literature US4308142 discloses a kind of flushing-back filtering equipment being used in particular for indoor water supply system.Back-flushing filtering device wherein comprises housing, the main filter in housing, for receive the fluid entering housing entrance and for by fluid drainage to the outlet outside housing.Wherein, rotatably mounted injection member is arranged in main filter, its be preferably cylinder form and for receive fluid and by fluid to the inner surface discharge of filter with backwash and cleaning and filtering.Filtration channel is arranged between entrance and exit in the housing for fluid being guided into the outer surface of main filter to realize filtering the object of fluid.Valve is arranged in the housing be associated with main filter for optionally fluid being guided into the opposite side of main filter to realize the object of filtering and recoiling respectively.In technical scheme disclosed in above-mentioned patent document, realize cleaning the flushing of screen pack by the injection member added especially, cause the labyrinth of this flushing-back filtering equipment.
American documentation literature US4090962 discloses a kind of back flush filter for installation.Particularly, back flush filter for installation has the housing of tape entry, outlet and the first filter, and the fluid wherein between entrance and exit flows through the first filter, and the first filter has the mechanism being provided for fluid and turning in housing.This device also comprises the second filter, and it is positioned at the upstream of the first filter and has the shell of open interior, and moveable perforate sliding part has in the shell of open interior can operate to realize the closed of the second filter when the first filter filters at this.This shell has the discharge orifice being with removable closure member.The unlatching of fluid steering mechanism and tubular slide part response closure member, make the fluid that is diverted through the first filter and the tubular slide part that aligns with the second filter housings, pass through to allow fluid and enter tubular slide part structure thus by the G that is attached on the first filter backwash in discharge orifice.That is, disclosed in above-mentioned patent document, technical scheme have employed twinfilter structure, and its parts are more, and structure is comparatively complicated, there are certain requirements the volume tool of whole filter for installation simultaneously.
Chinese patent literature CN101239261 discloses a kind of filter of Rewindable.Particularly, this filter comprises entrance that can be inaccessible, lockable outlet and arrange the filter of such as back-flushing filter between the inlet.Meanwhile, arrange a cavity between the inlet, the lower area of this cavity is connected with filter and upper area is closed, can form an airbag like this in cavity.Lower install pipeline that can be inaccessible is between entrance and filter, and wherein cavity is formed in the insertion portion of the upper area of regeneration filter cup.And this filter cup has the passage of the filter for connecting band outlet.In technical scheme disclosed in above-mentioned patent document, utilize gas pressure to realize flushing to the filter screen on filter, but due to provided air pressure level limited, be not ideal to the developing result of filter screen.
Filter for installation disclosed in above-mentioned patent document, except its deficiency separately existing for self and inferior position, there is following common issue simultaneously, namely, if it is identical with current in normal filtration process to rinse current, so on screen pack, impurity can not be rinsed effectively, therefore makes screen pack become the hotbed of breed bacteria.
Summary of the invention
The present invention is intended to overcome or alleviate in above-mentioned background technology at least one or more technical problem existed in the existing water filter device mentioned.
Meanwhile, one object of the present invention is to provide a kind of and has cramped construction and provide the Back-flush-type water filter for Drinking Water of optimum filtration area.
Another object of the present invention is to provide a kind of Back-flush-type water filter with simple structure.
At least one technical scheme of the present invention is achieved in that
A kind of Back-flush-type water filter, comprising:
Water inlet and delivery port;
Housing, housing is limited with cavity, and the current wherein flowed into from water inlet flow out from delivery port after cavity;
Filter element, comprises at least one Part I open to cavity and has the Part II of filter screen with at least one in the cavity that filter element is placed in housing; With
Water (flow) direction switching mechanism, water (flow) direction switching mechanism is configured to current are changed between normal filtering operation and backwash operation; Wherein when water (flow) direction switching mechanism is switched to normal filtering operation, at least one of water inlet and filter element to be communicated with and delivery port is communicated with at least one Part II with filter screen to the Part I that cavity opens, the Part I that such current open from least one to cavity flows to through filter screen the Part II that at least one has filter screen, thus realizes water filtration; And when water (flow) direction switching mechanism is switched to backwash operation, the Part II that at least one of water inlet and filter element has filter screen is communicated with and is communicated with at least one Part I opened to cavity with delivery port, the Part II that such current have filter screen from least one flows at least one Part I opened to cavity through filter screen, thus realizes the flushing to the impurity be deposited on filter screen.
According to a specific embodiment, filter element comprises: framework; With, the Part I that a subtend cavity is open and the Part II a pair with filter screen; Wherein, this to two in Part I be mutually symmetrical ground, this to two in Part II be mutually symmetrical ground and this to Part I and this to each in Part II alternating with each other arrange in the frame, thus make filter element form a bivalve structure.
Particularly, framework is cylindrical, and is limited with central shaft; From the cross section crossing with the central shaft of cylindrical frame, the Part I that this subtend cavity opens is arranged in the Part II with filter screen with this and is projected as in four equal quadrants in the center of circle with central shaft.
According to the present invention, each Part I opened to cavity is limited with first top surface and the first side wall and the first basal surface with the first connector opened, and at least one wherein in the first side wall and the first basal surface opens to cavity; And the second basal surface that each Part II with filter screen is limited with second top surface with the second open connector, the second sidewall closed by filter screen and closes.
Further, water filter provided by the invention also comprises sealing strip, and sealing strip is configured in the week being positioned at the first and second top surfaces of framework along on frame.
Preferably, second sidewall with the Part II of filter screen comprises two weeks being extended to framework by the central shaft from framework along frame, radial planar shaped filtering net plate, and connects the arc filtering net plate of two planar shaped filtering net plates along week along frame.
Preferably, framework is made of plastics, and filter screen is made up of stainless steel material.
Further, water filter provided by the invention also comprises head, and what be limited with connection water inlet in head respectively enters aquaporin and the exhalant canal being connected delivery port; Wherein, head is connected with filter element and is coordinated with frame seal by sealing strip; Wherein, when being in normal filtering operation, the first connector in each Part I opened to cavity of filter element is communicated with the aquaporin that enters in head, and each second connector with the Part II of filter screen is communicated with exhalant canal; When being in backwash operation, the first connector in each Part I opened to cavity of filter element is communicated with the exhalant canal in head, and eachly has the second connector in the Part II of filter screen and enter aquaporin and be communicated with.
According to the present invention, water filter also comprises interface board, interface board connection header, and water inlet and delivery port are separately positioned in interface board; Wherein, the oral siphon road entering aquaporin and water inlet being communicated with head and the outlet pipeline being communicated with exhalant canal and delivery port is offered in interface board respectively.
Preferably, interface board and head can be independently parts and be assembled into one.Alternatively, interface board and head also can be integrated single piece.
According to a specific embodiment, water (flow) direction switching mechanism comprises: pedestal, and pedestal is arranged in housing, is positioned at the below of filter element; Knob, knob is arranged on interface board; Connecting rod, connecting rod one end is fixed to the central shaft of the framework of filter element, and the other end is installed on knob; Spring, spring is arranged in pedestal, elasticity resist in the bottom of described housing and be configured to by sealing strip elastic compression on the correspondence position of head to guarantee being sealed and matched between the framework of filter element and head; Wherein, rotating knob by the elastic force overcoming spring can drive filter element to rotate between normal filtering operation and backwash operation, namely, when being in normal filtering operation, first connector of each Part I opened to cavity of filter element is converted into and is communicated with water inlet with oral siphon road through entering aquaporin, and each second connector with the Part II of filter screen is converted into and is communicated with delivery port with outlet pipeline through exhalant canal; When being in backwash operation, first connector of each Part I opened to cavity of filter element is converted into and is communicated with delivery port with outlet pipeline through exhalant canal, and each second connector with the Part II of filter screen is converted into and is communicated with water inlet with oral siphon road through entering aquaporin.
Particularly, water (flow) direction switching mechanism can be Non-follow control.Alternatively, water (flow) direction switching mechanism can also be automatically control.
According to the present invention, water filter also comprises: sewage draining exit, and sewage draining exit is configured at least one Part I opened to cavity to be in communication with the outside, with open to be discharged by the impurity got off from the flushing on filter screen by sewage draining exit in backwash operation; And blowoff valve, blowoff valve is arranged on sewage draining exit place and is suitable for the keying of control of sewage disposal mouth.
The present invention at least can obtain following technique effect: the present invention proposes a kind of Back-flush-type water filter, and wherein filter element preferably adopts bivalve structure, and in conjunction with specific water (flow) direction switching mechanism.This Back-flush-type water filter can realize back flush and realize automatically cleaning, and without the need to taking cleaning apart.Adopt the filter element of bivalve structure in the present invention, compared with simple circle column construction, have under identical size prerequisite, it can provide larger filter area, thus can increase the service life; In other words, the filter element of bivalve structure of the present invention can provide identical filter area with compacter size.In addition, Back-flush-type water filter provided by the invention, based on its ad hoc structure without the need to adopting complicated mechanism and structure, just can realize the conversion between normal current and backwash current simply.
Other goal of the invention that the present invention can realize and other technique effect that can obtain are set forth combining in following detailed description of the invention the description of embodiment and the signal of accompanying drawing.
Accompanying drawing explanation
In order to above and other objects of the present invention, feature and advantage can more be become apparent, below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is a kind of perspective view of a kind of Back-flush-type water filter according to the present invention's specific embodiment, and wherein filter housings is partially cut-away the filter element showing its inside;
Fig. 2 is a kind of perspective view according to the filter element in the Back-flush-type water filter of the present invention's specific embodiment;
Fig. 3 is the schematic top plan view according to the filter element in the Back-flush-type water filter of the present invention's specific embodiment;
Fig. 4 is a kind of perspective view according to the housing in the Back-flush-type water filter of the present invention's specific embodiment and head fits, and wherein filter housings is partially cut-away the filter element showing its inside;
Fig. 5 is a kind of planar structure schematic diagram according to the interface board in the Back-flush-type water filter of the present invention's specific embodiment;
Fig. 5 a is the A-A profile in Fig. 5;
Fig. 5 b is the B-B profile in Fig. 5;
Fig. 6 display is in the schematic diagram of the position under normal filtering operation pattern residing for water (flow) direction switching mechanism according to the Back-flush-type water filter of the present invention's specific embodiment;
Fig. 7 display is in the schematic diagram of the position under backwash operation pattern residing for water (flow) direction switching mechanism according to the Back-flush-type water filter of the present invention's specific embodiment; With
Fig. 8 is a kind of generalized section of display according to the Back-flush-type water filter of the present invention's specific embodiment, main display water (flow) direction switching mechanism wherein.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein identical from start to finish label represents same or analogous element.Below with reference to the accompanying drawings the embodiment described is exemplary, is intended to explain the present invention, and can not be interpreted as one restriction of the present invention.
For the embodiment shown in Fig. 1-3, the invention provides a kind of Back-flush-type water filter, comprise water inlet 16 and delivery port 18, housing 2, filter element 3, and water (flow) direction switching mechanism 4.Be limited with cavity 20 in housing 2, the current wherein flowed into from water inlet 16 flow out from delivery port 18 after cavity 20.It should be noted that, in explanation above and hereafter, described current do not show in the accompanying drawings, in accompanying drawing only be with the form of the index wire of arrow show current flow to direction.Filter element 3 is placed in the cavity 20 of housing 2, comprises at least one Part I 32 opened to cavity 20 and at least one has the Part II 34 of filter screen 30.The conversion that water (flow) direction switching mechanism 4 is configured to make current to carry out on flow direction between normal filtering operation and backwash operation.Wherein, when water (flow) direction switching mechanism 4 is switched to normal filtering operation, at least one of water inlet 16 and filter element 3 to be communicated with and delivery port 18 is communicated with at least one Part II 34 with filter screen 30 to the Part I 32 that cavity 20 opens, the Part I 32 that such current can open from least one to cavity 20 from water inlet 16 flows at least one Part II 34 with filter screen 30 through filter screen 30, thus realizes the filtration of water.Otherwise, when water (flow) direction switching mechanism 4 is switched to backwash operation, the Part II 34 that at least one of water inlet 16 and filter element 3 has filter screen 30 is communicated with and is communicated with at least one Part I 32 opened to cavity 20 with delivery port 18, the Part II 34 that such current can have filter screen 30 from water inlet 16 from least one flows at least one Part I 32 opened to cavity 20 through filter screen 30, thus realizes the flushing to the impurity be deposited on filter screen 30.Like this, Back-flush-type water filter provided by the invention, by carrying out the conversion of operator scheme to the filter element with particular configuration, just can realize the conversion between normal current and backwash current, thus realizes the automatically cleaning to filter screen.
Particularly, for the embodiment shown in Fig. 2 and 3, filter element 3 comprises the Part I 32 of framework 31 and a subtend cavity 20 opening and has the Part II 34 of filter screen 30 for a pair.Wherein, this to two in Part I 32 be mutually symmetrical ground, this to two in Part II 34 be mutually symmetrical ground and this to Part I 32 and this to each in Part II 34 alternating with each other be arranged in framework 31, thus make filter element 3 form a symmetrical bivalve structure.Preferably, framework 31 is made of plastics, and filter screen 30 is then made up of stainless steel material.It should be noted that the filter opening on the filter screen 30 in figure is not shown.
According to the embodiment shown in Fig. 2 and 3, in filter element 3, framework 31 is cylindrical, and is limited with central shaft 31a.In the present embodiment, from the cross section that the central shaft 31a with cylindrical frame 31 is crossing, the Part I 32 that this subtend cavity 20 is open and this Part II 34 with filter screen 30 be arranged in be projected as in four equal quadrants in the center of circle with central shaft 31a, thus make filter element 3 form a symmetrical bivalve structure on the whole.Alternatively, in other embodiments, filter element 3 also can adopt the structure of other form, such as asymmetric bivalve structure or multiple structure, as long as can realize requiring with the switching be communicated with between delivery port and water inlet.
See Fig. 2 and 3, in the present embodiment, framework 31 by end face and bottom surface two weeks along frame, limit central shaft 31 hollow tubular part and form along the radial members of the symmetry extended radial between frame and the both ends of hollow tubular part along frame and bottom surface week in end face week respectively.Particularly, in framework 31, each Part I 32 opened to cavity 20 is limited with first top surface and the first side wall and the first basal surface with the first connector 33 opened, and at least one wherein in the first side wall and the first basal surface opens to cavity 20; And the second basal surface that each Part II 34 with filter screen 30 is limited with second top surface with the second open connector 35, the second sidewall closed by filter screen 30 and closes.Further, second sidewall with the Part II 34 of filter screen 30 comprises two weeks being extended to framework 31 by the central shaft 31a from framework 31 along frame 31b, radial planar shaped filtering net plate 30a, and connects the arc filtering net plate 30b of two planar shaped filtering net plate 30a along week along frame 31b.It should be noted that, in the above-described embodiments, the second basal surface both can be totally enclosed surface, also can be the surface by filter screen 30 closed identical with the second sidewall.If the latter, then can strengthen the filter area of filter element further.In addition, in the present embodiment, framework 31 is overall mouldings.Alternatively, framework 31 can also be assembled by several assembly parts.Also need illustrate, in the present invention, framework 31 plays the effect of support and fixing filter screen 30, therefore, in the technical scheme that filter screen 30 can be supported by alternate manner and fix, can said frame be omitted, thus also can not there is the restriction of above-mentioned top surface, sidewall and basal surface etc., as long as limit the first and second open connectors 33,34.
Further, according to the present invention, filter element 3 also comprises sealing strip 39.Sealing strip 39 is configured in the week being positioned at the first and second top surfaces of framework 31 along on frame 31b.By sealing strip 39, the annexation that can realize filter element 3 and will be sealed and matched between the head 5 described in detail hereinafter.
See Fig. 1 and 3, a kind of Back-flush-type water filter provided by the invention, also comprises head 5.What be limited with connection water inlet 16 in head 5 respectively enters Aquaporin-5 6 and the exhalant canal 58 being connected delivery port 18.See Fig. 4, head 5 is arranged on housing 2, is suitable for being connected with by the interface board described in detail hereinafter 1, thus the water inlet 16 realized in interface board 1 and convertible between delivery port 18 and the first and second parts 32,34 of the filter element 3 in housing 2 are connected.Particularly, when being in normal filtering operation, the first connector 33 in each Part I 32 opened to cavity 20 of filter element 3 is communicated with the Aquaporin-5 6 that enters in head 5, and each second connector 35 with the Part II 34 of filter screen 30 is communicated with exhalant canal 58; When being in backwash operation, the first connector 33 in each Part I 32 opened to cavity 20 of filter element 3 is communicated with the exhalant canal 58 in head 5, and eachly has the second connector 35 in the Part II 34 of filter screen and enter Aquaporin-5 6 and be communicated with.As previously mentioned, head 5 is connected with the filter element 3 in housing 2 and is sealed and matched by the framework 31a of sealing strip 39 with filter element 3.Like this, can guarantee that the first and second connectors 33,35 in the first and second parts 32,34 of filter element 3 are communicated with exhalant canal 56,58 hermetically with the water that enters of head 5 respectively.In addition, be also provided with the central passage coordinated with the central shaft 31a of filter element 3 in head 5, the connecting rod in the water (flow) direction switching mechanism 4 that wherein will be described below passes from this central passage.
See Fig. 1 and 5, a kind of Back-flush-type water filter provided by the invention, also comprises interface board 1.Interface board 1 connection header 5, water inlet 16 and delivery port 18 are separately positioned in interface board 1.See Fig. 5, in interface board 1, offer the oral siphon road 12 entering Aquaporin-5 6 and water inlet 16 and the outlet pipeline 14 being communicated with exhalant canal 58 and delivery port 18 that are communicated with head 5 respectively.According to a specific embodiment, see Fig. 5 a, the A-A profile in its display Fig. 5, two vertical components that outlet pipeline 14 comprises a sloping portion and is connected with this sloping portion.Wherein, delivery port 18 is communicated with the sloping portion of outlet pipeline 14, and two of head 5 exhalant canals 58 are communicated with the vertical component of outlet pipeline 14 respectively.In addition, in the present embodiment, also comprise central passage 10 in interface board 1, this central passage 10 is configured to coordinate with the central shaft 31a of the central passage of head 5 and filter element 3, formed the connecting rod in the water (flow) direction switching mechanism 4 that will be described below by way of passage.As shown in Figure 5 a, central passage 10 is also crossing with the sloping portion of outlet pipeline 14, certainly, in actual applications, adopts necessary seal approach between the sloping portion of central passage 10 and outlet pipeline 14, and sealing measure can be conventional seal for pipe joints measure.Fig. 5 b is the B-B profile in Fig. 5, oral siphon road 12 comprise two as shown in Figure 5 b enter Aquaporin-5 6, each enter Aquaporin-5 6 comprise a vertical component and a horizontal component be communicated with this vertical component.Wherein, water inlet 16 is communicated with the horizontal component on oral siphon road 12, and the exhalant canal 58 of head 5 is communicated with the vertical component of water inlet 16 respectively.Preferably, interface board 1 and head 5 can be assembled into one.Alternatively, interface board 1 and head 5 also can be one-body molded.
See Fig. 1 and Fig. 6-8, in a kind of Back-flush-type water filter provided by the invention, water (flow) direction switching mechanism 4 mainly comprises pedestal 42, knob 41, connecting rod 43, and spring 44.Particularly, pedestal 42 is arranged in housing 20, is positioned at the below of filter element 3; Knob 41 is arranged on interface board 1; Connecting rod 43 one end is fixed in the tubular center axle 31a of the framework 31 of filter element 3, and the other end is fixed on knob 42; And spring 44 is arranged in pedestal 42, elasticity resists in the bottom of housing and be configured to by sealing strip 39 elastic compression on the correspondence position of head 5 to guarantee being sealed and matched between the framework 31 of filter element 3 and head 5.During switching, rotate knob 41 by the elastic force overcoming spring and filter element 3 can be driven to rotate between normal filtering operation and backwash operation.Like this, when being in normal filtering operation, first connector 33 of each Part I 32 opened to cavity 20 of filter element 3 is converted into and is communicated with water inlet 16 with oral siphon road 12 through entering Aquaporin-5 6, and each second connector 35 with the Part II 34 of filter screen 30 is converted into and is communicated with delivery port 18 with outlet pipeline 14 through exhalant canal 58; And when being in backwash operation, first connector 33 of each Part I 32 opened to cavity 20 of filter element 3 is converted into and is communicated with delivery port 18 with outlet pipeline 14 through exhalant canal 58, and each second connector 35 with the Part II 34 of filter screen 30 is converted into and is communicated with water inlet 16 with oral siphon road 12 through entering Aquaporin-5 6.Preferably, water (flow) direction switching mechanism 4 is Non-follow control.Alternatively, water (flow) direction switching mechanism 4 also can adopt automatic control as required, switches to realize identical pattern.
It is worth mentioning that, in above-mentioned water (flow) direction switching mechanism 4, connecting rod 43 and elasticity resist between the spring 44 on connecting rod 43 can also play a fool proof function.That is, when user needs to realize the conversion of filter element 3 between normal filtering operation and backwash operation by operation water (flow) direction switching mechanism 4, need to use the action of " press down-rotate-discharge " just correspondingly to switch by knob 41 to knob 41, like this, the switching maloperation of knob 41 being caused to water (flow) direction can be prevented.Wherein, under normal filtering operation pattern, filter element 3 is pressed on head 5 by spring 44, ensures sealing between the framework 31 of filter element 3 and head 5 thus and none-disk terminal occurs.And the action pressing down knob 41 makes filter element 3 be separated in the axial direction with head 5, and then filter element 3 can rotate switching along with the rotation of knob 41.
In addition, a kind of Back-flush-type water filter provided by the invention also comprises pollution discharge mechanism.See Fig. 1, pollution discharge mechanism comprises sewage draining exit 80 and blowoff valve 81.Particularly, sewage outfalls setting bottom housing 2, and is configured at least one Part I 32 opened to cavity to be in communication with the outside, with open to be discharged by the impurity got off from the flushing on filter screen 30 by sewage draining exit 80 in backwash operation; Blowoff valve 81 is then arranged on sewage draining exit 80 place and is suitable for the keying of control of sewage disposal mouth 80.
By description above, the structure of Back-flush-type water filter provided by the invention can be recognized.The application of Back-flush-type water filter provided by the invention is below described.Fig. 6 display is in the position under normal filtering operation pattern residing for water (flow) direction switching mechanism according to the Back-flush-type water filter of the present invention's specific embodiment.Fig. 7 display is in the position under backwash operation pattern residing for water (flow) direction switching mechanism according to Back-flush-type water filter.Under normal filtering operation pattern, the former water entered from water inlet 16 enters through first connector 33 entering the opening of Aquaporin-5 6 and filter element 3 of head 5 Part I 32 opened to cavity, then current flow to the Part II 34 with filter screen 30 through filter screen 30 from the Part I 32 opened to cavity, realize filtering, then, the current after filtration flow out from delivery port 16 from the second connector 35 of the opening of filter element 3 through the exhalant canal 58 of head 5.Under normal filtering operation pattern, along with service time is more and more longer, the impurity such as particle or drop to housing 2 cavity 20 bottom, or be blocked in the outer surface of filter screen 30.Therefore, when needing to carry out back flush filter screen 30, user can open the blowoff valve 81 bottom housing 2, sewage draining exit 80 is opened, then knob 41 is rotated in the mode of " press down-rotate-discharge ", filter element 3 is transformed into backwash operation pattern, now, the Aquaporin-5 6 that enters of head 5 is communicated with the Part II 34 with filter screen 30 of filter element 3, the exhalant canal 58 of head 5 is communicated with the Part I 32 opened to cavity, current are made to flow to from the Part II 34 with filter screen 30 of filter element 3 Part I 32 opened to cavity through filter screen 30, thus the backwash realized filter screen 30.Like this, under backwash operation pattern, the impurity be deposited on filter screen 30 outer surface can be rinsed out fall housing 2 cavity 20 bottom, and all impurity is finally discharged by sewage draining exit 80.
As from the foregoing, a kind of Back-flush-type water filter provided by the invention, wherein filter element preferably adopts bivalve structure, and in conjunction with specific water (flow) direction switching mechanism.This Back-flush-type water filter can realize back flush and realize automatically cleaning, and without the need to taking cleaning apart.Adopt the filter element of bivalve structure in the present invention, compared with simple circle column construction, have under identical size prerequisite, it can provide larger filter area, thus can increase the service life; In other words, the filter element of bivalve structure of the present invention can provide identical filter area with compacter size.In addition, Back-flush-type water filter provided by the invention, based on its ad hoc structure without the need to adopting complicated mechanism and structure, just can realize the conversion between normal current and backwash current simply.
The embodiment of the invention described above is only exemplary describes principle of the present invention and effect thereof, but not for limiting the present invention, know and it will be understood by those skilled in the art that, when without departing from the spirit and scope of the present invention, any changes and improvements made for the present invention all within the scope of the invention.The scope of the present invention, should as the claim of the application define be as the criterion.
Claims (14)
1. a Back-flush-type water filter, comprising:
Water inlet (16) and delivery port (18);
Housing (2), described housing is limited with cavity (20), and the current wherein flowed into from described water inlet flow out from described delivery port after described cavity;
Filter element (3), comprises at least one Part I opened to cavity (32) and at least one has the Part II (34) of filter screen (30) in the cavity that described filter element is placed in described housing; With
Water (flow) direction switching mechanism (4), described water (flow) direction switching mechanism is configured to current are changed between normal filtering operation and backwash operation; Wherein when described water (flow) direction switching mechanism is switched to described normal filtering operation, described water inlet and described filter element described at least one to be communicated with and described delivery port is communicated with at least one Part II with filter screen described to the Part I that cavity opens, such current from least one Part I opened to cavity described through described filter screen flow to described at least one there is the Part II of filter screen, thus realize water filtration; And when described water (flow) direction switching mechanism is switched to described backwash operation, at least one Part II with filter screen described of described water inlet and described filter element is communicated with and described delivery port is communicated with at least one Part I opened to cavity described, such current flow at least one Part I open to cavity described from least one Part II with filter screen described through described filter screen, thus the flushing of realization to the impurity be deposited on described filter screen.
2. water filter as claimed in claim 1, wherein said filter element (3) comprising:
Framework (31); With
The Part I (32) that one subtend cavity is open and there is for a pair Part II (34) of filter screen;
Wherein, this to two in Part I be mutually symmetrical ground, this to two in Part II be mutually symmetrical ground and this to Part I and this to each in Part II alternating with each other be arranged in described framework, thus make described filter element (3) formed a bivalve structure.
3. water filter as claimed in claim 2, wherein:
Described framework is cylindrical, and is limited with central shaft (31a);
From the cross section that the described central shaft with described cylindrical frame is crossing, the Part I that this subtend cavity opens is arranged in the Part II with filter screen with this and is projected as in four equal quadrants in the center of circle with described central shaft.
4. water filter as claimed in claim 3, wherein:
Each described Part I opened to cavity is limited with first top surface and the first side wall and the first basal surface with the first connector (33) opened, and at least one in wherein said the first side wall and described first basal surface opens to cavity; And each described in there is filter screen Part II the second basal surface of being limited with second top surface with open the second connector (35), the second sidewall closed by filter screen and closing.
5. water filter as claimed in claim 4, also comprises:
Sealing strip (39), described sealing strip (39) is configured in the week being positioned at described first and second top surfaces of described framework along on frame (31b).
6. water filter as claimed in claim 5, wherein:
Described described second sidewall with the Part II of filter screen comprises two described weeks being extended to described framework by the central shaft from described framework along frame, radial planar shaped filtering net plate (30a), and connects the arc filtering net plate (30b) of described two planar shaped filtering net plates along described week along frame.
7. water filter as claimed in claim 3, wherein:
Described framework is made of plastics, and described filter screen is made up of stainless steel material.
8. water filter as claimed in claim 5, also comprise head (5), what be limited with the described water inlet of connection (16) in described head respectively enters aquaporin (56) and the exhalant canal (58) being connected described delivery port (18);
Wherein, described head (5) is connected with described filter element (3) and is coordinated with described frame seal by described sealing strip;
Wherein, when being in normal filtering operation, described first connector (33) in each described Part I (32) opened to cavity of described filter element (3) with in described head (5) described in enter aquaporin (56) and be communicated with, and each described in there is the Part II (34) of filter screen described second connector (35) be communicated with described exhalant canal (58); When being in backwash operation, described first connector (33) in each described Part I (32) opened to cavity of described filter element (3) is communicated with the described exhalant canal (58) in described head (5), and each described in have described second connector (35) in the Part II (34) of filter screen with described enter aquaporin (56) be communicated with.
9. water filter as claimed in claim 8, also comprise interface board (1), described interface board (1) connects described head (5), and described water inlet (16) and described delivery port (18) are separately positioned in described interface board;
Wherein, the oral siphon road (12) entering aquaporin (56) and described water inlet (16) being communicated with described head (5) and the outlet pipeline (14) being communicated with exhalant canal (58) and described delivery port (18) is offered in described interface board (1) respectively.
10. water filter as claimed in claim 9, wherein:
Described interface board (1) and described head (5) are assembled into one.
11. water filters as claimed in claim 9, wherein:
Described interface board (1) and described head (5) one-body molded.
12. water filters as claimed in claim 9, wherein said water (flow) direction switching mechanism (4) comprising:
Pedestal (42), described pedestal is arranged in described housing, is positioned at the below of filter element;
Knob (41), described knob is arranged on described interface board;
Connecting rod (43), described connecting rod one end is fixed to the central shaft of the framework of described filter element, and the other end is installed on described knob;
Spring (44), described spring is arranged in described pedestal (42), elasticity resist in the bottom of described housing and be configured to by described sealing strip elastic compression on the correspondence position of described head to guarantee being sealed and matched between the framework of described filter element and described head;
Wherein, rotating described knob (41) by the elastic force overcoming described spring can drive filter element (3) to rotate between described normal filtering operation and backwash operation, namely, when being in normal filtering operation, described first connector (33) of each described Part I (32) opened to cavity of described filter element (3) be converted into through described enter aquaporin (56) be communicated with described water inlet (16) with described oral siphon road (12), and each described in there is the Part II (34) of filter screen described second connector (35) be converted into and be communicated with described delivery port (18) with described outlet pipeline (14) through described exhalant canal (58), when being in backwash operation, described first connector (33) of each described Part I (32) opened to cavity of described filter element (3) is converted into and is communicated with described delivery port (18) with described outlet pipeline (14) through described exhalant canal (58), and each described in there is the Part II (34) of filter screen described second connector (35) be converted into through described enter aquaporin (56) be communicated with described water inlet (16) with described oral siphon road (12).
13. water filters as claimed in claim 12, wherein:
Described water (flow) direction switching mechanism is Non-follow control.
14. water filters as claimed in claim 1, also comprise:
Sewage draining exit (80), described sewage draining exit is configured at least one Part I opened to cavity described to be in communication with the outside, with open to be discharged by the impurity got off from the flushing on described filter screen by described sewage draining exit in described backwash operation; With
Blowoff valve (81), described blowoff valve is arranged on described sewage draining exit place and is suitable for controlling the keying of described sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210113275.7A CN103372340B (en) | 2012-04-17 | 2012-04-17 | Back-flush-type water filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210113275.7A CN103372340B (en) | 2012-04-17 | 2012-04-17 | Back-flush-type water filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103372340A CN103372340A (en) | 2013-10-30 |
| CN103372340B true CN103372340B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210113275.7A Active CN103372340B (en) | 2012-04-17 | 2012-04-17 | Back-flush-type water filter |
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| CN (1) | CN103372340B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721468A (en) * | 2013-12-12 | 2014-04-16 | 浙江华益机械有限公司 | Disassembling-and-cleaning free filter |
| CN104128027B (en) * | 2014-08-05 | 2015-09-09 | 余姚市生碧源环保科技有限公司 | A kind of backwash laminated filter |
| CN105521635B (en) * | 2016-02-25 | 2017-12-15 | 苏州单科机电有限公司 | A kind of rotatable water-purifying filter of filter screen |
| BR112019006020A2 (en) * | 2016-09-28 | 2019-06-18 | Veolia Water Solutions & Tech | method for filtering water, and frame type disc filter. |
| CN110652770A (en) * | 2019-04-03 | 2020-01-07 | 杭州绿一环保技术有限公司 | A device for sewage treatment |
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| US3513981A (en) * | 1968-02-06 | 1970-05-26 | Major Pool Equipment Corp | Rotary gate,multiport valve for direct mounting on a filter tank |
| US3834537A (en) * | 1972-11-09 | 1974-09-10 | Purex Corp Ltd | High throughput filter having multiposition valve |
| WO2005061072A1 (en) * | 2003-12-05 | 2005-07-07 | Dosmatic Usa, Inc. | Backwash flushing filter |
| CN101496970A (en) * | 2009-01-23 | 2009-08-05 | 荆州市明德科技有限公司 | On-line bidirectional automatic backwashing type filtering equipment |
| CN202155093U (en) * | 2011-06-16 | 2012-03-07 | 海宁市水享净水设备有限公司 | Pre-filter |
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| US3513981A (en) * | 1968-02-06 | 1970-05-26 | Major Pool Equipment Corp | Rotary gate,multiport valve for direct mounting on a filter tank |
| US3834537A (en) * | 1972-11-09 | 1974-09-10 | Purex Corp Ltd | High throughput filter having multiposition valve |
| WO2005061072A1 (en) * | 2003-12-05 | 2005-07-07 | Dosmatic Usa, Inc. | Backwash flushing filter |
| CN101496970A (en) * | 2009-01-23 | 2009-08-05 | 荆州市明德科技有限公司 | On-line bidirectional automatic backwashing type filtering equipment |
| CN202155093U (en) * | 2011-06-16 | 2012-03-07 | 海宁市水享净水设备有限公司 | Pre-filter |
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| Publication number | Publication date |
|---|---|
| CN103372340A (en) | 2013-10-30 |
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Effective date of registration: 20240327 Address after: American Minnesota Patentee after: Shuwanuo Intellectual Property Co. Country or region after: U.S.A. Address before: American Minnesota Patentee before: 3M INNOVATIVE PROPERTIES Co. Country or region before: U.S.A. |