CN108854219B - Centralized rotary back flushing filter - Google Patents
Centralized rotary back flushing filter Download PDFInfo
- Publication number
- CN108854219B CN108854219B CN201811014606.5A CN201811014606A CN108854219B CN 108854219 B CN108854219 B CN 108854219B CN 201811014606 A CN201811014606 A CN 201811014606A CN 108854219 B CN108854219 B CN 108854219B
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- China
- Prior art keywords
- sewage
- filter screen
- pipe fitting
- rotating shaft
- cylindrical filter
- Prior art date
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 39
- 239000010865 sewage Substances 0.000 claims abstract description 106
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000001914 filtration Methods 0.000 claims abstract description 41
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000007790 scraping Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 35
- 239000008399 tap water Substances 0.000 abstract description 22
- 235000020679 tap water Nutrition 0.000 abstract description 22
- 239000008213 purified water Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 9
- 238000011045 prefiltration Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000746 purification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013049 sediment Substances 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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles 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
- B01D29/11—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
-
- 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
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
Abstract
The utility model belongs to the technical field of filters, in particular to a centralized rotary backwash filter which comprises a filter main body, wherein the filter main body comprises an upper shell provided with a liquid inlet channel and a liquid outlet channel and a lower shell provided with a sewage channel, a cylindrical filter screen is arranged in a filter cavity between the upper shell and the lower shell, an inner framework is arranged in the middle of the cylindrical filter screen, a centralized flushing sewage mechanism is arranged in the filter cavity and comprises a sewage pipe fitting communicated with the sewage channel, a strip sewage nozzle is arranged on the side part of the sewage pipe fitting and is attached to a main filtering surface of the cylindrical filter screen, and impurities on the main filtering surface can be discharged from the sewage channel through the sewage nozzle by rotating the sewage pipe fitting or the cylindrical filter screen. The utility model uses the pressure of tap water to perform concentrated rotary scanning type back flushing, and has high flushing efficiency; the back flushing pollution discharge can be realized while filtering out the purified water, and the water consumption is not influenced.
Description
Technical Field
The utility model belongs to the technical field of filters, and particularly relates to a centralized rotary back flushing filter.
Background
The pre-filter is usually installed behind the water meter on the main water inlet pipeline of the household, and is mainly used for filtering particulate impurities in tap water, such as sediment, rust and the like.
The utility model of China with the application number of 201420630652.9 discloses a back flush prefilter, which comprises a back flush valve, wherein the back flush valve is provided with a water inlet port and a water outlet port which are opened in the horizontal direction, the upper end of the back flush valve is provided with a back flush valve body port, and a back flush valve core, a back flush valve sealing ring, a back flush valve body top cover and a back flush knob are sequentially arranged at the back flush valve body port from bottom to top; the lower end of the back flush valve is connected with a filter cylinder body, and a filter element is arranged in the filter cylinder body; the lower end of the filter cylinder body is connected with a sewage draining valve body. According to the back flushing prefilter, a back flushing valve is added on a conventional prefilter, so that the problem that impurities are attached to a filter screen and cannot be flushed cleanly is solved, the disassembling steps of the prefilter are reduced, and convenience is brought to users.
However, the pre-filter still has the following problems:
1. the structure realizes the filtering function or the back flushing impurity removing function by selecting the liquid inlet channel through the back flushing valve core, and the two can not be used simultaneously, so that the back flushing valve is not suitable for places such as hotels, hospitals and the like which need uninterrupted water supply.
2. The backwash water source with the structure is raw tap water, and the filter is easy to cause secondary pollution.
3. During back flushing, the pressure of the water source is not concentrated, the back flushing effect of the filter screen is poor, and part of impurities can be remained on the filter screen and cannot be removed.
Disclosure of Invention
The utility model aims to provide a centralized back flushing filter which has the advantages of simple structure, low cost, long service life, high cleaning efficiency and no secondary pollution.
The purpose of the utility model is realized in the following way:
the utility model provides a concentrated rotation type back flush filter, includes the filter main part, the filter main part is including being provided with the last casing of feed liquor passageway and drain passage and being provided with the lower casing of drain passage, install the drum filter screen in the filter chamber between last casing and the lower casing, drum filter screen middle part is provided with the inner frame.
The filter chamber is internally provided with a centralized flushing and blowdown mechanism, the centralized flushing and blowdown mechanism comprises a blowdown pipe fitting communicated with a blowdown channel, a strip blowdown nozzle is arranged on the side part of the blowdown pipe fitting, the blowdown nozzle is attached to a main filtering surface of a cylindrical filter screen, and impurities on the main filtering surface can be discharged from the blowdown channel through the blowdown nozzle by rotating the blowdown pipe fitting or the cylindrical filter screen.
Preferably, a rotating shaft is rotatably arranged in the middle of the filter main body, and the rotating shaft drives the sewage pipe fitting to rotate;
when the liquid inlet channel is communicated with the inner cavity of the cylindrical filter screen, the sewage discharge pipe fitting is arranged inside the cylindrical filter screen;
when the liquid outlet channel is communicated with the inner cavity of the cylindrical filter screen, the sewage discharge pipe fitting is arranged outside the cylindrical filter screen.
Preferably, the auxiliary filtering surface of the cylindrical filter screen is provided with a scraping frame, the scraping frame is provided with a liquid inlet nozzle, the liquid inlet nozzle and the sewage draining nozzle are oppositely arranged on the inner side and the outer side of the cylindrical filter screen, and the scraping frame and the sewage draining pipe fitting are both fixedly arranged on the rotating shaft.
Preferably, the upper end of the rotating shaft extends out of the upper shell and is connected with a gear motor or a rotating nut.
Preferably, a sealing gasket is arranged at the lower end of the rotating shaft, and the switch of the sewage disposal channel can be controlled by the up-and-down movement of the rotating shaft.
Preferably, the lower extreme of axis of rotation is provided with impeller and at least one planet wheel reduction gear, the feed liquor end intercommunication blowdown pipe fitting inner chamber of impeller, its play liquid end intercommunication blowdown passageway, be provided with the input gear who connects the planet wheel reduction gear on the impeller, the planet wheel reduction gear is including a plurality of planet wheel, the holder of meshing input gear and the fluted disc of setting on lower casing, a plurality of planet wheel passes through the holder rotation setting on the fluted disc, holder drive axis of rotation or drum filter screen or the rotation of next grade planet wheel reduction gear, the blowdown passageway is provided with the blowoff valve.
Preferably, the lower end of the rotating shaft is communicated with the inner cavity of the sewage pipe fitting, and the lower end of the rotating shaft extends out of the lower shell and is fixedly provided with a sewage valve, and the rotating sewage valve can drive the rotating shaft to rotate.
Preferably, the sewage discharge pipe fitting, the rotating shaft and the inner framework are integrally formed.
Preferably, the rotation shaft passes through the cylinder filter screen and rotates to be arranged in the filter main body, the liquid outlet channel is communicated with the inner cavity of the cylinder filter screen, the sewage discharge pipe fitting is arranged at the lower end of the rotation shaft, which is integrally formed outside the cylinder filter screen, the upper end of the rotation shaft is provided with a gas channel, the gas channel extends into the inner cavity of the cylinder filter screen, the middle part of the rotation shaft is provided with a strip-shaped air tap connected with the gas channel, and the air tap is opposite to the sewage discharge nozzle outside the cylinder filter screen.
Preferably, the liquid inlet channel is communicated with the inner cavity of the cylindrical filter screen, and the sewage discharge pipe fitting is arranged inside the cylindrical filter screen; a plurality of filter disc rings for increasing the filter area extend outwards from the side wall of the cylindrical filter screen; the side wall of the sewage pipe fitting is outwards extended to form sewage branch pipes with the same number as the filter disc rings, and the upper end and the lower end of each sewage branch pipe are respectively provided with a strip sewage nozzle for cleaning the inner wall of the filter disc ring.
Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
1. the utility model can realize back flushing pollution discharge while filtering out the purified water, does not affect the water consumption, and does not affect the quality of the purified water because the pollution discharge channel and the liquid outlet channel are completely independent.
2. The utility model uses the pressure of tap water to perform concentrated rotary scanning type back flushing, and has high flushing efficiency; in addition, the backwashed water is the purified water filtered by the cylindrical filter screen, so that secondary pollution to the cylindrical filter screen is avoided.
Drawings
Fig. 1 is a cross-sectional view of a first embodiment of the present utility model.
Figure 2 is a cross-sectional view of the centralized flushing and blowdown mechanism of figure 1 at A-A.
Fig. 3 is a top view of a first embodiment of the present utility model.
Fig. 4 is a cross-sectional view of a second embodiment of the present utility model.
Fig. 5 is a cross-sectional view of the planetary gear reducer at B-B in fig. 4.
Fig. 6 is a cross-sectional view of the impeller at C-C in fig. 4.
FIG. 7 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 4 at D-D.
Fig. 8 is a cross-sectional view of a third embodiment of the present utility model.
Fig. 9 is a cross-sectional view of a fourth embodiment of the present utility model.
Fig. 10 is a cross-sectional view of the centralized flushing and blowdown mechanism of fig. 9 at E-E.
Fig. 11 is a cross-sectional view of a fifth embodiment of the present utility model.
FIG. 12 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 11 at F-F.
Fig. 13 is a cross-sectional view of a sixth embodiment of the present utility model.
Fig. 14 is a cross-sectional view of a seventh embodiment of the present utility model.
FIG. 15 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 14 at H-H.
Fig. 16 is a cross-sectional view of an eighth embodiment of the utility model.
FIG. 17 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 16 at I-I.
Fig. 18 is a cross-sectional view of a ninth embodiment of the present utility model.
FIG. 19 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 18 at J-J.
Fig. 20 is a cross-sectional view of a tenth embodiment of the utility model.
Fig. 21 is a partial enlarged view of the communication between the tap water outlet and the trapway at M in fig. 20.
FIG. 22 is a cross-sectional view of the centralized flushing and blowdown mechanism of FIG. 20 at K-K.
The meaning indicated by the reference numerals in the figures:
1-an upper housing; 2-a lower housing; 3-a cylindrical filter screen; 4-an inner skeleton; 5-rotating shaft; 6-a speed reducing motor; 7-rotating the nut; 8-a sealing gasket; 9-a blow-down valve; 10-a differential pressure switch;
11-a liquid inlet channel; 12-a liquid outlet channel; 13-a connection joint; 14-a water purification faucet; 15-tap; 16-a tap water outlet channel;
21-a sewage disposal channel; 22-a sewage discharge pipe fitting; 23-a sewage discharging nozzle; 24-scraping frame; 25-a pollution discharge branch pipe; 26-a liquid inlet nozzle;
31-gas channel; 32-air tap; 33-a filter disc ring; 34-a gas check valve;
51-impeller; 52-a planetary gear reducer; 53-planet wheels; 54-cage.
Detailed Description
The utility model is further described with reference to the following specific examples:
the utility model provides a concentrated rotation type back flush filter, includes the filter main part, the filter main part is including being provided with the last casing 1 of feed liquor passageway 11 and liquid passageway 12 and being provided with the lower casing 2 of drain passageway 21, be provided with the attach fitting 13 of feed liquor mouth and liquid outlet on the last casing 1, install drum filter screen 3 in the filter chamber between last casing 1 and the lower casing 2, drum filter screen 3 is zigzag filter screen or wave filter screen or intermediate layer complex filter screen, drum filter screen 3 middle part is provided with inner skeleton 4, inner skeleton 4 includes a plurality of cyclic annular bone piece, and the cyclic annular bone piece is formed through the supporting rib even arrangement.
There is concentrated flushing blowdown mechanism in the filter chamber, concentrated flushing blowdown mechanism includes the blowdown pipe fitting 22 of intercommunication blowdown passageway 21, be provided with a rectangular shape blowdown mouth 23 on the lateral part of blowdown pipe fitting 22, blowdown mouth 23 both sides are provided with the doctor-bar that is used for scraping miscellaneous, the doctor-bar can guarantee that blowdown mouth 23 and cylinder filter screen 3's main filter face are inside closely to be laminated. The sewage discharging nozzle 23 is attached to the main filtering surface of the cylindrical filter screen 3, and the main filtering surface is the surface on which impurities on the cylindrical filter screen 3 are mainly adsorbed. In addition, the secondary filter surface is the surface of the cylindrical screen 3 opposite the primary filter surface. By rotation of the drain fitting 22 or the cylindrical screen 3, impurities on the main filtering surface can be discharged from the drain passage 21 through the drain nozzle 23. The utility model uses the pressure of tap water to perform concentrated rotary scanning type back flushing, and has high flushing efficiency; in addition, the backwashed water is the purified water filtered by the cylindrical filter screen, so that secondary pollution to the cylindrical filter screen is avoided.
Preferably, a rotating shaft 5 is rotatably arranged in the middle of the filter main body, and the rotating shaft 5 drives the sewage discharge pipe fitting 22 to rotate to realize back flushing.
The utility model drives the rotation shaft 5 to rotate in the following modes:
1. the upper shell 1 at the upper end of the rotating shaft 5 is provided with a gear motor 6, the liquid inlet channel 11 or the liquid outlet channel 12 is provided with a pressure difference switch 10, and the on-off of the gear motor 6 is controlled by the pressure difference switch 10.
2. A rotation nut 7 is provided on the upper housing 1 at the upper end of the rotation shaft 5 to be manually rotated by a user.
3. The lower end of the rotating shaft 5 is provided with an impeller 51 and at least one planet gear reducer 52, the liquid inlet end of the impeller 51 is communicated with the inner cavity of the sewage pipe fitting 22, the liquid outlet end of the impeller is communicated with the sewage channel 21, the impeller 51 is provided with an input gear connected with the planet gear reducer 52, the planet gear reducer 52 comprises a plurality of planet gears 53 meshed with the input gear, a retainer 54 and a fluted disc arranged on the lower shell 2, the plurality of planet gears 53 are rotatably arranged on the fluted disc through the retainer 54, and the retainer 54 drives the rotating shaft 5 or the cylindrical filter screen 3 or the next-stage planet gear reducer 52 to rotate.
4. The rotating shaft 5 extends out of the lower shell 2 and is directly connected with the blow-down valve 9, and the blow-down valve 9 is manually rotated to realize the rotation of the rotating shaft 5.
The filtering modes of the utility model are divided into two types:
the first filtering mode is as follows: the liquid inlet channel 11 is communicated with the inner cavity of the cylindrical filter screen 3, the liquid outlet channel 12 is communicated with the outer cavity of the cylindrical filter screen 3, namely tap water is filtered from inside to outside, impurities after filtration are mainly adsorbed on the inner surface of the cylindrical filter screen 3, the inner surface of the cylindrical filter screen 3 is a main filter surface, and at the moment, the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3 and used for cleaning the impurities.
The second filtering mode is as follows: the liquid outlet channel 12 is communicated with the inner cavity of the cylindrical filter screen 3, namely tap water is filtered from outside to inside, impurities after filtration are mainly adsorbed on the outer surface of the cylindrical filter screen 3, the outer surface of the cylindrical filter screen 3 is a main filter surface, and at the moment, the sewage discharge pipe fitting 22 is arranged outside the cylindrical filter screen 3.
Principle of:
tap water flows in through the liquid inlet channel 11, and after being filtered by the cylinder filter screen 3, purified water flows out of the liquid outlet channel 12. Meanwhile, if excessive impurities on the main filtering surface are found to influence the filtering efficiency, the blow-off channel 21 is opened, and the purified water of the liquid outlet channel 12 can be backwashed through the cylindrical filter screen 3 to clean the main filtering surface due to the pressure of the purified water and the action of the narrow blow-off nozzle 23, and the impurities after backwashing are discharged through the blow-off channel 21. The utility model does not affect the filtration of the purified water during high-precision impurity removal, thereby achieving the effects of simultaneous filtration and impurity removal.
The cylinder filter screen 3 or the sewage pipe fitting 22 is rotated, so that the sewage nozzle 23 and the main filter surface are relatively moved, and the main filter surface is comprehensively cleaned once every one turn of relative rotation, thereby achieving the purpose of 360-degree dead-angle-free cleaning. Because the sewage discharging nozzle 23 of the sewage discharging pipe fitting 22 is equivalent to a seam, the cleaning area is smaller, and strong flushing force can be generated under the action of the high-pressure water purifying and sewage discharging nozzle 23, thereby achieving the effects of concentrated flushing and high-efficiency impurity removal. In addition, the utility model performs back flushing through purified water, and ensures the cleanliness of the auxiliary filtering surface of the cylindrical filter screen 3.
Embodiment one:
as shown in fig. 1-3, the first filtering method is adopted in this embodiment: the tap water is filtered from inside to outside, namely, the main filtering surface is the inner surface of the cylindrical filter screen 3, the auxiliary filtering surface is the outer surface of the cylindrical filter screen 3, the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3, and the main difference is that the scraping frame 24 is arranged, and the rotating shaft is driven by a motor.
The specific structure is as follows:
the auxiliary filtering surface of the cylindrical filter screen 3 is provided with a scraping frame 24 for supporting the cylindrical filter screen 3, the scraping frame 24 is provided with a liquid inlet nozzle 26, and the liquid inlet nozzle 26 is used for collecting water. The liquid inlet nozzle 26 and the sewage discharging nozzle 23 are oppositely arranged on the inner side and the outer side of the cylindrical filter screen 3, and the scraping frame 24 and the sewage discharging pipe fitting 22 are fixedly arranged on the rotating shaft 5. The liquid inlet nozzle 26 is provided with a pressing sheet, and the pressing sheet and the scraping blade of the pollution discharge nozzle 23 act on the inner side and the outer side of the cylindrical filter screen 3 together to ensure the close fit between the cylindrical filter screen and the pollution discharge nozzle 23.
Preferably, the scraping frame 24, the sewage discharging pipe fitting 22, the rotating shaft 5 and the inner framework 4 are integrally formed and driven by the rotating shaft 5.
Preferably, a sealing gasket 8 is arranged at the lower end of the rotating shaft 5, the sealing gasket 8 faces the sewage outlet of the lower shell, and the opening and closing of the sewage channel 21 can be controlled by the up-and-down movement of the rotating shaft 5. The rotating shaft 5 is also provided with a sealing convex ring which isolates the sewage drain channel 21 from the liquid outlet channel 12.
Preferably, a gear motor 6 is arranged on the upper shell 1 at the upper end of the rotating shaft 5, a pressure difference switch 10 is arranged on the liquid inlet channel 11 or the liquid outlet channel 12, and the on-off of the gear motor 6 is controlled by the pressure difference switch 10, so that full automation is realized. In addition, the gear motor 6 may be controlled at a fixed timing.
Embodiment two:
as shown in fig. 4-7, the first filtering method is adopted in this embodiment: tap water is filtered from inside to outside, and the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3. The main difference is that: the rotating shaft is driven by the impeller and planetary gear reducer 52.
The specific structure is as follows:
the lower end of the rotating shaft 5 is provided with an impeller 51 and at least one planet gear reducer 52, the liquid inlet end of the impeller 51 is communicated with the inner cavity of the sewage pipe fitting 22, the liquid outlet end of the impeller 51 is communicated with the sewage channel 21, the impeller 51 is provided with an input gear connected with the planet gear reducer 52, the planet gear reducer 52 comprises a plurality of planet gears 53 meshed with the input gear, a retainer 54 and a fluted disc arranged on the lower shell 2, the plurality of planet gears 53 are rotatably arranged on the fluted disc through the retainer 54, the retainer 54 drives the rotating shaft 5, or the retainer drives the next-stage planet gear reducer 52 to rotate, the retainer 54 of the next-stage planet gear reducer 52 drives the rotating shaft 5, and the utility model is provided with 3 planet gear reducers 52. The trapway 21 is provided with a trapway 9, which trapway 9 may be a solenoid valve or a manual ball valve.
The power source of the embodiment drives the impeller to rotate by the pressure of tap water, so that the motion of the rotating shaft is realized, and the back flushing pollution discharge can be realized by opening the pollution discharge valve, so that the operation is simple and convenient. The length of the drain pipe can be selected, and the discharged sewage can be used for watering flowers, washing vehicles or mopping the floor, so that two purposes are achieved.
Embodiment III:
as shown in fig. 8, the first filtering method is adopted in this embodiment: tap water is filtered from inside to outside, and the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3. The main difference is that: the cylindrical screen 3 is driven by the impeller and the planetary gear reducer 52, i.e., the rotation shaft is fixed.
The specific structure is as follows:
the lower extreme of axis of rotation 5 is provided with impeller 51 and at least one planet wheel reduction gear 52, the feed liquor end intercommunication blowdown pipe fitting 22 inner chamber of impeller 51, its play liquid end intercommunication blowdown passageway 21, be provided with the input gear who connects planet wheel reduction gear 52 on the impeller 51, planet wheel reduction gear 52 includes a plurality of planet wheel 53 of meshing input gear, holder 54 and sets up the fluted disc on lower casing 2, a plurality of planet wheel 53 passes through the holder 54 rotation setting on the fluted disc, holder 54 drive drum filter screen 3 or next level planet wheel reduction gear 52 rotate, blowdown passageway 21 is provided with blowoff valve 9.
Embodiment four:
as shown in fig. 9-10, the first filtering method is adopted in this embodiment: tap water is filtered from inside to outside, and the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3. The main difference is that: the rotating shaft is directly driven by a blow-down valve at the bottom.
The specific structure is as follows:
the lower end of the rotating shaft 5 is communicated with the inner cavity of the sewage pipe fitting 22, and the lower end of the rotating shaft extends out of the lower shell 2 and is fixedly provided with a sewage discharging valve 9, and the rotating sewage discharging valve 9 can drive the rotating shaft 5 to rotate. The scheme is the simplest and practical.
Fifth embodiment:
as shown in fig. 11-12, the second filtering method is adopted in this embodiment: tap water is filtered from outside to inside, and the sewage drain pipe fitting 22 is arranged outside the cylindrical filter screen 3. The main difference is that: the rotation shaft is driven by a rotation nut 7.
The specific structure is as follows:
a sewage pipe fitting 22 is arranged outside the cylindrical filter screen 3, and the bottom of the sewage pipe fitting 22 is connected to the rotating shaft 5 and communicated with the sewage channel 21.
The auxiliary filtering surface of the cylindrical filter screen 3 is provided with a scraping frame 24 for supporting the cylindrical filter screen 3, the scraping frame 24 is provided with a liquid inlet nozzle 26, and the liquid inlet nozzle 26 is used for collecting water. The liquid inlet nozzle 26 and the sewage discharging nozzle 23 are oppositely arranged on the inner side and the outer side of the cylindrical filter screen 3, and the scraping frame 24 and the sewage discharging pipe fitting 22 are fixedly arranged on the rotating shaft 5.
The rotating shaft 5 is arranged inside the cylindrical filter screen 3 and integrally formed with the inner framework and the scraping frame 24, and the rotating nut 7 is arranged on the upper shell 1 at the upper end of the rotating shaft 5 and is manually rotated by a user.
Preferably, a sealing gasket 8 is arranged at the lower end of the rotating shaft 5, the sealing gasket 8 faces the sewage outlet of the lower shell, and the opening and closing of the sewage channel 21 can be controlled by the up-and-down movement of the rotating shaft 5.
Example six:
as shown in fig. 13, the second filtering method is adopted in this embodiment: tap water is filtered from outside to inside, and the sewage drain pipe fitting 22 is arranged outside the cylindrical filter screen 3. The main difference between this embodiment and the fifth embodiment is that: the rotating shaft is driven by the impeller.
Embodiment seven:
as shown in fig. 14-15, the second filtering method is adopted in this embodiment: tap water is filtered from outside to inside, and the sewage drain pipe fitting 22 is arranged outside the cylindrical filter screen 3. The main difference between this embodiment and the fifth embodiment is that: the rotating shaft is directly driven by the blow-down valve.
Example eight:
as shown in fig. 16-17, the second filtering method is adopted in this embodiment: tap water is filtered from outside to inside, and the sewage drain pipe fitting 22 is arranged outside the cylindrical filter screen 3. The main difference between this embodiment and the fifth embodiment is that: the rotating shaft is directly driven by the impeller and is provided with an auxiliary cleaning channel of the gas channel.
The specific structure is as follows:
the rotary shaft 5 passes through the cylindrical filter screen 3 and rotates to be arranged in the filter main body, the liquid outlet channel 12 is communicated with the inner cavity of the cylindrical filter screen 3, the sewage discharge pipe fitting 22 is arranged at the lower end of the rotary shaft 5, which is integrally formed outside the cylindrical filter screen 3, the upper end of the rotary shaft 5 is provided with a gas channel 31, the gas inlet end of the gas channel 31 is provided with a gas one-way valve 34, the gas channel 31 extends into the inner cavity of the cylindrical filter screen 3, the middle part of the rotary shaft 5 is provided with a strip-shaped air tap 321 connected with the gas channel 31, and the air tap 321 is opposite to the sewage discharge nozzle 23 outside the cylindrical filter screen 3. After the air is brought in by the water flow, a certain pressure is generated, because the air density is low, the air can more easily pass through the cylindrical filter screen 3, and the air bubbles can generate a pressure relief explosion phenomenon, so that the water flow intermittently passes through the cylindrical filter screen 3 to form a pulse, and the impact force can be increased to better flush the precise cylindrical filter screen 3. In addition, the amount of the washing water can be reduced.
Example nine:
as shown in fig. 18-19, the first filtering method is adopted in this embodiment: tap water is filtered from inside to outside, and the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3. The main difference between this embodiment and the fourth embodiment is that: the cylindrical filter screen 3 is in the shape of a disk.
The specific structure is as follows:
the liquid inlet channel 11 is communicated with the inner cavity of the cylindrical filter screen 3, and the sewage discharge pipe fitting 22 is arranged inside the cylindrical filter screen 3; a plurality of filter disc rings 33 for increasing the filter area extend outwards from the side wall of the cylindrical filter screen 3; the side wall of the sewage pipe fitting 22 is outwards extended with sewage branch pipes 25 with the same number as the filter disc rings 33, and the upper end and the lower end of the sewage branch pipes 25 are respectively provided with a strip-shaped sewage nozzle 23 for cleaning the inner wall of the filter disc rings 33. The filtering flow rate of the embodiment is relatively large, and the installation space is relatively small.
Example ten:
as shown in fig. 20-21, this embodiment is an application on a dual-purpose faucet for water purification.
The second filtering mode is adopted in the embodiment: tap water is filtered from outside to inside, and the sewage drain pipe fitting 22 is arranged outside the cylindrical filter screen 3. The present embodiment is basically the same as the sixth embodiment, and the main difference is that: the driving source of impeller and planet wheel reduction gear sets up in the filter upper end, and is provided with the running water outlet channel of intercommunication feed liquor passageway 11 on the axis of rotation 5, running water outlet channel and drain 21 communicate each other, are provided with tap 15 on the drain, be provided with water purification tap 14 on the drain, the pressure drive impeller through liquid itself rotates, realizes the blowdown when running water goes out liquid. The sewage is discharged when the tap is opened, so that the amount of sewage discharged each time is small, and the use of tap water is not affected basically.
Example eleven:
the embodiment is an expansion based on the above ten embodiments, and the specific contents are as follows:
a longer sewage drain pipe is added on the sewage drain channel 21, so that a larger height difference is formed between a liquid inlet end and a liquid outlet end of the sewage drain pipe, and the sewage drain pipe is mainly used in rural areas with larger altitude differences. In the process of sewage disposal, the height difference can convert potential energy of the liquid into kinetic energy thereof, and the potential energy is used for increasing the adsorption force of the sewage disposal nozzle 23, thereby further increasing the sewage disposal effect.
In addition, a water pump can be directly arranged on the sewage draining pipe, and the liquid is driven by the water pump, so that the aim of increasing the adsorption force of the sewage draining nozzle 23 is fulfilled.
The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (10)
1. The utility model provides a concentrated rotation type back flush filter, includes the filter main part, the filter main part is including last casing (1) that are provided with feed liquor passageway (11) and drain passageway (12) and be provided with lower casing (2) of drain passageway (21), install drum filter screen (3), its characterized in that in the filter chamber between last casing (1) and lower casing (2):
the filter cavity is internally provided with a centralized flushing and blowdown mechanism, the centralized flushing and blowdown mechanism comprises a blowdown pipe fitting (22) communicated with a blowdown channel (21), a strip blowdown nozzle (23) is arranged on the side part of the blowdown pipe fitting (22), the blowdown nozzle (23) is attached to the main filtering surface of the cylindrical filter screen (3), and impurities on the main filtering surface can be discharged from the blowdown channel (21) through the blowdown nozzle (23) by rotating the blowdown pipe fitting (22) or the cylindrical filter screen (3);
a scraping frame (24) is arranged on the auxiliary filtering surface of the cylindrical filter screen (3), a liquid inlet nozzle (26) is arranged on the scraping frame (24), and the liquid inlet nozzle (26) is funnel-shaped; the liquid inlet nozzle (26) and the sewage draining nozzle (23) are oppositely arranged on the inner side and the outer side of the cylindrical filter screen (3), and the scraping frame (24) and the sewage draining pipe fitting (22) are integrally formed.
2. The concentrated rotary backwash filter of claim 1 wherein: a rotating shaft (5) is rotatably arranged in the middle of the filter main body, and the rotating shaft (5) drives the sewage pipe fitting (22) to rotate;
when the liquid inlet channel (11) is communicated with the inner cavity of the cylindrical filter screen (3), the sewage discharging pipe fitting (22) is arranged inside the cylindrical filter screen (3);
when the liquid outlet channel (12) is communicated with the inner cavity of the cylindrical filter screen (3), the sewage discharging pipe fitting (22) is arranged outside the cylindrical filter screen (3).
3. A concentrated rotary backwash filter according to claim 2 wherein: the scraping frame (24) and the sewage pipe fitting (22) are both fixedly arranged on the rotating shaft (5).
4. A concentrated rotary backwash filter according to claim 3 wherein: the upper end of the rotating shaft (5) extends out of the upper shell (1) and is connected with a gear motor (6) or a rotating nut (7).
5. The concentrated rotary backwash filter of claim 4 wherein: the lower end of the rotating shaft (5) is provided with a sealing gasket (8), and the switch of the sewage disposal channel (21) can be controlled by the up-and-down movement of the rotating shaft (5).
6. A concentrated rotary backwash filter according to claim 2 wherein: an impeller (51) and at least one planet gear reducer (52) are arranged at the lower end of the rotating shaft (5), the liquid inlet end of the impeller (51) is communicated with the inner cavity of the sewage pipe fitting (22), the liquid outlet end of the impeller is communicated with the sewage channel (21), an input gear connected with the planet gear reducer (52) is arranged on the impeller (51), the planet gear speed reducer (52) comprises a plurality of planet gears (53) meshed with an input gear, a retainer (54) and a fluted disc arranged on the lower shell (2), the planet gears (53) are rotatably arranged on the fluted disc through the retainer (54), the retainer (54) drives the rotating shaft (5) or the cylindrical filter screen (3) or the next-stage planet gear speed reducer (52) to rotate, and the blow-down channel (21) is provided with a blow-down valve (9).
7. A concentrated rotary backwash filter according to claim 2 wherein: the lower end of the rotating shaft (5) is communicated with the inner cavity of the sewage pipe fitting (22), and the lower end of the rotating shaft extends out of the lower shell (2) and is fixedly provided with a sewage discharging valve (9), and the rotating sewage discharging valve (9) can drive the rotating shaft (5) to rotate.
8. A concentrated rotary backwash filter according to claim 2 wherein: the middle part of the cylindrical filter screen (3) is provided with an inner framework (4), and the sewage discharge pipe fitting (22), the rotating shaft (5) and the inner framework (4) are integrally formed.
9. A concentrated rotary backwash filter according to claim 2 wherein: the filter is characterized in that the rotating shaft (5) penetrates through the cylindrical filter screen (3) to be rotationally arranged in the filter body, the liquid outlet channel (12) is communicated with the inner cavity of the cylindrical filter screen (3), the pollution discharge pipe fitting (22) is arranged at the lower end of the rotating shaft (5) through the outer integrated into one piece of the cylindrical filter screen (3), the upper end of the rotating shaft (5) is provided with the gas channel (31), the gas channel (31) extends into the inner cavity of the cylindrical filter screen (3), the middle part of the rotating shaft (5) is provided with a strip-shaped air tap (321) connected with the gas channel (31), and the air tap (321) faces the pollution discharge nozzle (23) outside the cylindrical filter screen (3).
10. A concentrated rotary backwash filter according to claim 2 wherein: the liquid inlet channel (11) is communicated with the inner cavity of the cylindrical filter screen (3), and the sewage discharging pipe fitting (22) is arranged inside the cylindrical filter screen (3); a plurality of filter disc rings (33) for increasing the filter area extend outwards from the side wall of the cylindrical filter screen (3); the side wall of the sewage pipe fitting (22) is outwards extended with sewage branch pipes (25) with the same number as the filter disc rings (33), and the upper end and the lower end of each sewage branch pipe (25) are respectively provided with a strip-shaped sewage nozzle (23) for cleaning the inner wall of the filter disc ring (33).
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| CN201811014606.5A CN108854219B (en) | 2018-08-31 | 2018-08-31 | Centralized rotary back flushing filter |
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| CN201811014606.5A CN108854219B (en) | 2018-08-31 | 2018-08-31 | Centralized rotary back flushing filter |
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| CN108854219A CN108854219A (en) | 2018-11-23 |
| CN108854219B true CN108854219B (en) | 2024-04-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021000779A1 (en) * | 2019-07-03 | 2021-01-07 | 曹开军 | Prefilter having filter screen self-cleaning function |
| CN110645442B (en) * | 2019-09-29 | 2021-05-18 | 路达(厦门)工业有限公司 | Water passing device |
| CN110731302A (en) * | 2019-11-13 | 2020-01-31 | 王仲兴 | aquarium filter aid |
| CN111991895B (en) * | 2020-08-28 | 2022-11-22 | 湖南欧标化妆品有限公司 | Liquid cosmetic filtering and purifying system and method |
| CN112452029A (en) * | 2020-11-24 | 2021-03-09 | 陆杰 | Precision filter for chemical production and processing |
| CN115105884B (en) * | 2022-08-29 | 2022-11-15 | 上寻环保科技(云南)有限公司 | Treatment tank for sewage treatment equipment |
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