CN209040210U - A kind of household water saving device - Google Patents
A kind of household water saving device Download PDFInfo
- Publication number
- CN209040210U CN209040210U CN201821745326.7U CN201821745326U CN209040210U CN 209040210 U CN209040210 U CN 209040210U CN 201821745326 U CN201821745326 U CN 201821745326U CN 209040210 U CN209040210 U CN 209040210U
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- water
- tank
- shaft
- saving device
- filtering tank
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Abstract
The utility model discloses a kind of household water saving devices, comprising: top opening and the water tank with an accommodating cavity, the bottom of the water tank is provided with the drainpipe being connected to the accommodating cavity；Inner hollow and the water filtering tank being detachably arranged in the water tank open top end, the top and bottom of the water filtering tank are opening, are detachably provided with end cap on the open top of the water filtering tank, are additionally provided with water inlet at the top of the water filtering tank；The first filter element in the hollow cavity of the water filtering tank is set；The second filter element in the hollow cavity of the water filtering tank and being located at immediately below first filter element is set；The water inlet pipe that one end is provided with the connector connecting with the outlet pipe of hand washing sink, the other end is connect with the water inlet；And the hose being connect with the drainpipe.The household water saving device can be realized the useless water reuse of hand washing sink, effectively saves household water, has the advantages that structure is simple, easy to use.
Description
Technical field
The utility model relates to water saving fixtures technical field more particularly to household water saving devices.
Background technique
Water is Source of life, is most precious resource for the survival of mankind.It is existing since modern world population sharply expands
Still increased with daily 200,000 or annual 70000000 speed, whole world water consumption increases 6 times in 20th century, industrializes in addition
Modernization to ecological environment bring negatively affect, water it is seriously polluted, tellurian water resource is increasingly in short supply.According to national statistics
Sample investigation of the city department, office to more than the 50000 family urban households in the whole nation, the monthly water consumption in the family of urban household mainly collect
In at 5~9.99 tons.In respondent, there is 38.3% family monthly to use water at 5~9.99 tons；There is 31.3% family monthly to use
10~19.99 tons of water；There is 20.9% domestic water consumption at 5 tons or less；But there is 7% domestic water consumption to reach 20~29.99
Ton, there are also 3% domestic water consumptions at 30 tons or more.As household water specific gravity constantly increases, domestic water saving equipment is obviously fallen
Afterwards, waste water resource is got worse.Therefore, it is necessary to study a kind of household water saving devices.
Utility model content
Shortcoming present in view of the above technology, the utility model, which provides one kind, can effectively save household water
The household water saving device of amount.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of household water saving device, comprising: a top
Portion's opening and the water tank with an accommodating cavity, the bottom of the water tank is provided with a draining being connected to the accommodating cavity
Pipe；One inner hollow and the water filtering tank being detachably arranged in the water tank open top end, the top of the water filtering tank and
Bottom is opening, is detachably provided with an end cap on the open top of the water filtering tank, is additionally provided at the top of the water filtering tank
One water inlet；One is arranged in the first filter element in the hollow cavity of the water filtering tank；One is arranged in the hollow of the water filtering tank
The second filter element that is intracavitary and being located at immediately below first filter element；One end is provided with to be connected with the outlet pipe of hand washing sink
The water inlet pipe that the connector that connects, the other end are connect with the water inlet；And one connect with by the storage with the drainpipe
Water in water tank realizes the hose recycled；Wherein, first filter element is located at the lower section of the water inlet；Described second
Filter element include semicircle plate-like base station in a hollow cavity for being fastened on the water filtering tank, be rotatably arranged on by shaft it is described
Filter core on base station, form on the base station half it is discoid for accommodating the filter core and making the filter core complete
The filter core chamber of covering, the filter core are in semicircle plate-like, and the hollow cavity of the water filtering tank is a cylindrical cavity, the cavity wall of the hollow cavity
On be fixedly installed the circular arc block of one with filter core coaxial arrangement, the shaft is rotatably arranged on the center of the base station vertically
At axis, and the shaft runs through first filter element and the end cap vertically, forms on the end cap and turns for described
Axis perforative centre bore is detachably provided with leader on the end that the shaft extends on the outside of the end cap；When rotation institute
State shaft make the filter core it is fully rotating go out the base station when, the filter core, the circular arc block and the base station are by the filter
The hollow cavity of water tank is divided into upper and lower two independent chambers.
Preferably, the top end face of the base station is a straight plane of inclination that the water tank is flowed downwardly into conducive to water flow.
Preferably, the corner dimension between the straight plane of the inclination and horizontal plane is 30 °.
Preferably, it is additionally provided on the bottom face of the base station for according to the ultraviolet disinfection lamp for setting the water tank.
Preferably, first filter element includes first stainless in a hollow cavity for being horizontally secured to the water filtering tank
Steel filter plate, the pebble layer being laid on the first stainless steel filter plate, one cover second be located above the pebble layer not
Become rusty steel filter plate, wherein has been separately formed on the first stainless steel filter plate and the second stainless steel filter plate and has passed through for the shaft
The first through hole worn and the second through-hole on the top end face of the first stainless steel filter plate and are located at the first through hole and are provided with
One cylinder ring, the first through hole, second through-hole and the cylinder ring enclose jointly to be set to form what a confession shaft was worn
Channel.
Preferably, a stainless steel filter cylinder is additionally provided in the connector, wherein be fixedly installed on the inner ring of the connector
One circular flange forms the limiting slot of one with coaxial thereto setting on the top end face of the flange, described stainless
A circular flange is formed at the top of steel filter cylinder, is formed one on the bottom face of the flange and is matched with the limiting slot
Circular retainer ring.
It preferably, further include a position-limiting unit that 180 ° are rotated for limiting the shaft, the position-limiting unit includes solid
It is arranged on the bottom face of the end cap and is symmetrically positioned in a pair of of fixed block of the centre bore two sides, be fastened on the fixation calmly
The first magnet on block, one are fastened on the limit plate in the shaft and being located at below the end cap, wherein the fixed block it
Between be spaced 180 °, the limit plate includes one being set in the shaft and with the lantern ring of shaft rotation, a fixed setting
It is fixed on the mounting blocks and is matched with first magnet in the mounting blocks and one in the circumferential wall of the lantern ring
The second magnet, the magnetism of second magnet is magnetic opposite with first magnet.
Preferably, it is provided with one first check valve and a water pump on the drainpipe, one is provided on the water inlet pipe
Two check valves are provided with water level sensor in the cavity wall of the accommodating cavity of the water tank, and the water level sensor is close to the storage
The top of water tank is arranged, wherein the sight of the short transverse distribution along the water tank is additionally provided on the tank wall of the water tank
Window is examined, the graduation mark for showing water inside the water tank, the water level sensor and institute are provided on the observation window
The high settings such as the graduation mark of the top of observation window are stated, a control panel, the control are provided on the top end face of the end cap
Panel passes through route and first check valve, the water pump, the second one-way valve, the water level sensor and described ultraviolet
The connection of line sterilamp.
Preferably, ventilation hole is provided on the tank wall of the water tank, the ventilation hole is located at the water level sensor
Top, wherein the mode that the ventilation hole is low with medial end, outboard end is high is inclined at the tank wall of the water tank
On.
It preferably, further include the support base that universal wheel is provided on a bottom face, the water tank is fastened on the support
On seat.
The utility model compared with prior art, the beneficial effect is that: household water saving device provided by the utility model,
Stainless steel filter cylinder in connector is for filtering out the biggish sundries of hair, particle, to avoid hair and the biggish sundries blocking of particle
Water inlet pipe is to influence the use of whole device；First filter element is used to filter the tiny particles content in hand washing sink waste water；The
Two filter elements are for further purifying waste water, to achieve the purpose that disinfection filtering；In the utility model, second filter element
Control whether it participates in filtration operation by shaft, when the water resource of recycling is for flushing closestool, pouring flowers, plants and trees,
To the of less demanding of the domestic water for such, at this point, the filter core in the second filter element can then be rotated it is intracavitary to filter core,
Waste water can be used after the filtering of the first filter element；When the water resource of recycling for mop floor when, to for such
The requirement of domestic water is then higher, need to could use after the disinfection filtering of the second filter element, filters at this point, filter core is screwed out
Core cavity participates in filtration operation；The utility model can be realized more by stainless steel filter cylinder, the first filter element and the second filter element
Grade filtering has the advantages that structure is simple, easy to use to meet the requirement for not having to type domestic water.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of household water saving device described in the utility model；
Fig. 2 is the decomposition texture schematic diagram of household water saving device described in the utility model；
Fig. 3 is the positional diagram between the water inlet pipe, connector and stainless steel filter cylinder of the utility model；
Fig. 4 is the structural schematic diagram of the stainless steel filter cylinder of the utility model；
Fig. 5 is the structural schematic diagram of the position-limiting unit of the utility model；
Fig. 6 is the structural schematic diagram of the limit plate of the utility model；
Fig. 7 is the structural schematic diagram of first filter element of the utility model；
Fig. 8 is the structural schematic diagram of second filter element of the utility model；
Fig. 9 is the structural schematic diagram of the base station of the utility model；
Figure 10 is the structural schematic diagram of the water filtering tank of the utility model；
Figure 11 is one of the structural schematic diagram of household water saving device described in the utility model；
Figure 12 is the second structural representation of household water saving device described in the utility model.
In figure: 10, water tank；11, drainpipe；12, the first check valve；13, water pump；14, observation window；15, level sensor
Device；16, ventilation hole；20, water filtering tank；21, end cap；211, centre bore；22, water inlet；23, circular arc block；30, the first filtering is single
Member；31, the first stainless steel filter plate；311, cylinder ring；32, the second stainless steel filter plate；33, pebble layer；40, the second filtering is single
Member；41, base station；411, filter core chamber；42, filter core；43, shaft；44, ultraviolet disinfection lamp；45, handle；50, water inlet pipe；51,
Two check valves；52, connector；521, flange；522, limiting slot；53, stainless steel filter cylinder；531, flange；532, retainer ring；60, it limits
Unit；61, fixed block；62, the first magnet；63, limit plate；631, lantern ring；632, mounting blocks；633, the second magnet；70, it controls
Panel；80, hose；81, nozzle；90, support base.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
As shown in Figures 1 to 12, the utility model provides a kind of household water saving device, comprising: a top opening and tool
There is the water tank 10 of an accommodating cavity, the bottom of the water tank 10 is provided with a drainpipe 11 being connected to the accommodating cavity；One
Inner hollow and the water filtering tank 20 being detachably arranged in 10 open top end of water tank, the top of the water filtering tank 20 and
Bottom is opening, is detachably provided with an end cap 21 on the open top of the water filtering tank 20, the top of the water filtering tank 20 is also
It is provided with a water inlet 22；One is arranged in the first filter element 30 in the hollow cavity of the water filtering tank 20；One is arranged described
The second filter element 40 in the hollow cavity of water filtering tank 20 and immediately below first filter element 30；One end is provided with
The water inlet pipe 50 that the connector 52 that connect with the outlet pipe of hand washing sink, the other end are connect with the water inlet 22；And one with
The connection of drainpipe 11 is to realize the hose 80 recycled for the water in the water tank 10；Wherein, first filtering is single
Member 30 is located at the lower section of the water inlet 22；Second filter element 40 includes a hollow cavity for being fastened on the water filtering tank 20
Interior semicircle plate-like base station 41 is rotatably arranged on the filter core 42 on the base station 41 by shaft 43, forms on the base station 41
There are the filter core chamber 411 for accommodating the filter core 42 and being completely covered the filter core 42 that half is discoid, the filter
Core 42 is in semicircle plate-like, and the hollow cavity of the water filtering tank 20 is a cylindrical cavity, is fixedly installed one in the cavity wall of the hollow cavity
With the circular arc block 23 of the filter core 42 coaxial arrangement, the shaft 43 is rotatably arranged on the central axis of the base station 41 vertically
Place, and the shaft 43 runs through first filter element 30 and the end cap 21 vertically, forms on the end cap 21 for institute
The perforative centre bore 211 of shaft 43 is stated, is detachably provided with one on the end that the shaft 43 extends on the outside of the end cap 21
Handle 45；When rotate the shaft 43 make the filter core 42 it is fully rotating go out the base station 41 when, the filter core 42, the circle
The hollow cavity of the water filtering tank 20 is divided into upper and lower two independent chambers by arc block 23 and the base station 41.
As an embodiment of this programme, as shown in Figure 7 to 9, the top end face of the base station 41 be one be conducive to water flow to
The lower straight plane of inclination for flowing into the water tank 10.
As an embodiment of this programme, the corner dimension tilted between straight plane and horizontal plane is 30 °.
As an embodiment of this programme, as shown in Fig. 9, Figure 11 and Figure 12, also set up on the bottom face of the base station 41
Have for according to the ultraviolet disinfection lamp 44 for setting the water tank 10, the ultraviolet disinfection lamp 44 to be used for in the water tank 10
Water carry out sterilizing operation.
As an embodiment of this programme, as shown in Fig. 7, Fig. 8, Figure 11 and Figure 12, first filter element 30 includes
One be horizontally secured in the hollow cavity of the water filtering tank 20 the first stainless steel filter plate 31, be laid on the first stainless steel filter plate
Pebble layer 33, one on 31 covers the second stainless steel filter plate 32 for being located at 33 top of pebble layer, wherein described first is not
It has been separately formed on rust steel filter plate 31 and the second stainless steel filter plate 32 for the perforative first through hole of the shaft 43 and second
Through-hole on the top end face of the first stainless steel filter plate 31 and is located at the first through hole and is provided with a cylinder ring 311, described
First through hole, second through-hole and the cylinder ring 311 enclose jointly to be set to form a channel worn for the shaft 43.
As an embodiment of this programme, as shown in Figure 3 and Figure 4, a stainless steel filter cylinder is additionally provided in the connector 52
53, wherein be fixedly installed a circular flange 521 on the inner ring of the connector 52, on the top end face of the flange 521 at
Type has the limiting slot 522 of one with the flange 521 coaxial arrangement, and the top of the stainless steel filter cylinder 53 forms an annular shape
Flange 531 forms a circular retainer ring 532 matched with the limiting slot 522 on the bottom face of the flange 531.
As an embodiment of this programme, as shown in figure 5, further including a limit for rotating 180 ° for limiting the shaft 43
Bit location 60, the position-limiting unit 60 include being fixed on the bottom face of the end cap 21 and being symmetrically positioned in the centre bore
A pair of of fixed block 61 of 211 two sides, the first magnet 62, one being fastened on the fixed block 61 be fastened in the shaft 43 and
Limit plate 63 positioned at 21 lower section of end cap, wherein 180 ° are spaced between the fixed block 61, the limit plate 63 includes one
It is set in the shaft 43 and is fixed at the lantern ring 631, one that the shaft 43 rotates the circumferential wall of the lantern ring 631
On the second magnet that is fixed on the mounting blocks 632 and is matched with first magnet 62 of mounting blocks 632 and one
633, the magnetism of second magnet 633 and the magnetism of first magnet 62 are opposite.
As an embodiment of this programme, as depicted in figs. 1 and 2, one first check valve is provided on the drainpipe 11
12 and a water pump 13, a second one-way valve 51 is provided on the water inlet pipe 50, in the cavity wall of the accommodating cavity of the water tank 10
It is provided with water level sensor 15, the water level sensor 15 is arranged close to the top of the water tank 10, wherein the water tank
It is additionally provided with the observation window 14 of the short transverse distribution along the water tank 10 on 10 tank wall, is provided on the observation window 14
For showing the graduation mark of the 10 inside water of water tank, the water level sensor 15 and the top of the observation window 14
The high settings such as graduation mark are provided with a control panel 70 on the top end face of the end cap 21, and the control panel 70 passes through route
Disappear with first check valve 12, the water pump 13, the second one-way valve 51, the water level sensor 15 and the ultraviolet light
Malicious lamp 44 connects.
As an embodiment of this programme, as shown in figure 11, ventilation hole 16, institute are provided on the tank wall of the water tank 10
State the top that ventilation hole 16 is located at the water level sensor 15, wherein the ventilation hole 16 is low with medial end, outboard end is high
Mode be inclined on the tank wall of the water tank 10, the ventilation hole 16 can be avoided the water in the water tank 10 by
Peculiar smell is generated in atmosphere draught-free.
It further include the branch that universal wheel is provided on a bottom face as depicted in figs. 1 and 2 as an embodiment of this programme
Seat 90 is supportted, the water tank 10 is fastened on the support base 90, and the purpose that the support base 90 is arranged is: in order to which movement is whole
A device has the advantages that easy to use.
As an embodiment of this programme, as shown in Fig. 1 and Fig. 2, the end of the hose 80 is additionally provided with a nozzle
81。
Although the embodiments of the present invention have been disclosed as above, it is not limited in institute in specification and embodiments
Column use, it can be applied to various fields suitable for the present invention completely, for those skilled in the art, can
Easily realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, this is practical
It is novel to be not limited to specific details and legend shown and described herein.
Claims (10)
1. a kind of household water saving device characterized by comprising
One top opening and the water tank (10) with an accommodating cavity, the bottom of the water tank (10) is provided with one and the appearance
Set the drainpipe (11) of chamber connection；
One inner hollow and the water filtering tank (20) being detachably arranged in the water tank (10) open top end, the water filtering tank
(20) top and bottom are opening, are detachably provided with an end cap (21) on the open top of the water filtering tank (20), described
A water inlet (22) are additionally provided at the top of water filtering tank (20)；
One the first filter element (30) being arranged in the hollow cavity of the water filtering tank (20)；
Second mistake of one setting in the hollow cavity of the water filtering tank (20) and immediately below first filter element (30)
It filters unit (40)；
One end is provided with the connector (52) connecting with the outlet pipe of hand washing sink, the other end is connect with the water inlet (22)
One water inlet pipe (50)；And
One connect so that the water in the water tank (10) is realized the hose (80) recycled with the drainpipe (11)；
Wherein, first filter element (30) is located at the lower section of the water inlet (22)；Second filter element (40) packet
It includes the semicircle plate-like base station (41) in the hollow cavity that one is fastened on the water filtering tank (20), be rotatably arranged on institute by shaft (43)
State the filter core (42) on base station (41), formed on the base station (41) half it is discoid for accommodate the filter core (42) and
So that the filter core chamber (411) that the filter core (42) is completely covered, the filter core (42) is in semicircle plate-like, the water filtering tank (20)
Hollow cavity be a cylindrical cavity, the circular arc of one with the filter core (42) coaxial arrangement are fixedly installed in the cavity wall of the hollow cavity
Block (23), the shaft (43) are rotatably arranged on vertically at the central axis of the base station (41), and the shaft (43) is vertical
Through first filter element (30) and the end cap (21), forms on the end cap (21) and run through for the shaft (43)
Centre bore (211), be detachably provided with leader on the end that the shaft (43) extends on the outside of the end cap (21)
(45)；When rotate the shaft (43) make the filter core (42) it is fully rotating go out base station (41) when, the filter core (42),
The hollow cavity of the water filtering tank (20) is divided into upper and lower two independent chambers by the circular arc block (23) and the base station (41)
Room.
2. household water saving device as described in claim 1, which is characterized in that the top end face of the base station (41) is one conducive to water
Stream flows downwardly into the straight plane of inclination of the water tank (10).
3. household water saving device as claimed in claim 2, which is characterized in that the folder tilted between straight plane and horizontal plane
Angle size is 30 °.
4. household water saving device as described in claim 1, which is characterized in that be additionally provided on the bottom face of the base station (41)
For according to the ultraviolet disinfection lamp (44) for setting the water tank (10).
5. household water saving device as described in claim 1, which is characterized in that first filter element (30) includes one horizontal
The first stainless steel filter plate (31) for being fastened in the hollow cavity of the water filtering tank (20) is laid on the first stainless steel filter plate
(31) pebble layer (33), a lid on are located at the second stainless steel filter plate (32) above the pebble layer (33), wherein institute
Stating to be separately formed on the first stainless steel filter plate (31) and the second stainless steel filter plate (32) supplies the shaft (43) perforative
First through hole and the second through-hole on the top end face of the first stainless steel filter plate (31) and are located at the first through hole and are provided with
One cylinder ring (311), the first through hole, second through-hole and the cylinder ring (311) enclose jointly and set to be formed described in a confession
The channel that shaft (43) is worn.
6. household water saving device as described in claim 1, which is characterized in that be additionally provided with a stainless steel in the connector (52)
Filter cylinder (53), wherein a circular flange (521), the flange (521) are fixedly installed on the inner ring of the connector (52)
Top end face on form one with the flange (521) coaxial arrangement limiting slot (522), the top of the stainless steel filter cylinder (53)
Portion forms a circular flange (531), forms one and the limiting slot (522) on the bottom face of the flange (531)
The circular retainer ring (532) matched.
7. household water saving device as described in claim 1, which is characterized in that further include one for limiting the shaft (43) turn
Dynamic 180 ° of position-limiting unit (60), the position-limiting unit (60) are on the bottom face of the end cap (21) and right including being fixed at
Claim a pair of of the fixed block (61) for being located at the centre bore (211) two sides, the first magnet being fastened on the fixed block (61)
(62), one it is fastened on the limit plate (63) on the shaft (43) and being located at below the end cap (21), wherein the fixed block
(61) 180 ° are spaced between, the limit plate (63) is set on the shaft (43) including one and rotates with the shaft (43)
Lantern ring (631), the mounting blocks (632) and one being fixed in the circumferential wall of the lantern ring (631) be fixed at institute
The second magnet (633) stated on mounting blocks (632) and matched with first magnet (62), second magnet (633)
It is magnetic opposite with the magnetism of first magnet (62).
8. household water saving device as claimed in claim 4, which is characterized in that it is single to be provided with one first on the drainpipe (11)
To valve (12) and a water pump (13), it is provided with a second one-way valve (51) on the water inlet pipe (50), the water tank (10)
It is provided in the cavity wall of accommodating cavity water level sensor (15), top of the water level sensor (15) close to the water tank (10)
Portion's setting, wherein the sight of the short transverse distribution along the water tank (10) is additionally provided on the tank wall of the water tank (10)
It examines window (14), the graduation mark for showing the internal water of the water tank (10), the water is provided on the observation window (14)
The high settings such as the graduation mark of the top of level sensor (15) and the observation window (14) are set on the top end face of the end cap (21)
Be equipped with a control panel (70), the control panel (70) by route and first check valve (12), the water pump (13),
The second one-way valve (51), the water level sensor (15) and the ultraviolet disinfection lamp (44) connection.
9. household water saving device as claimed in claim 8, which is characterized in that be provided on the tank wall of the water tank (10) logical
Air holes (16), the ventilation hole (16) are located at the top of the water level sensor (15), wherein the ventilation hole (16) is with inside
The mode that end is low, outboard end is high is inclined on the tank wall of the water tank (10).
10. household water saving device as described in claim 1, which is characterized in that further include being provided with universal wheel on a bottom face
Support base (90), the water tank (10) is fastened on the support base (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821745326.7U CN209040210U (en) | 2018-10-23 | 2018-10-23 | A kind of household water saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821745326.7U CN209040210U (en) | 2018-10-23 | 2018-10-23 | A kind of household water saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209040210U true CN209040210U (en) | 2019-06-28 |
Family
ID=67039619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821745326.7U Expired - Fee Related CN209040210U (en) | 2018-10-23 | 2018-10-23 | A kind of household water saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209040210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183913A (en) * | 2018-10-23 | 2019-01-11 | 蚌埠学院 | A kind of household water saving device |
-
2018
- 2018-10-23 CN CN201821745326.7U patent/CN209040210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183913A (en) * | 2018-10-23 | 2019-01-11 | 蚌埠学院 | A kind of household water saving device |
| CN109183913B (en) * | 2018-10-23 | 2024-04-19 | 蚌埠学院 | Household water-saving device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190628 Termination date: 20211023 |