CN209538301U - Ftercompction formula non-tower water feeder - Google Patents
Ftercompction formula non-tower water feeder Download PDFInfo
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- CN209538301U CN209538301U CN201920009362.5U CN201920009362U CN209538301U CN 209538301 U CN209538301 U CN 209538301U CN 201920009362 U CN201920009362 U CN 201920009362U CN 209538301 U CN209538301 U CN 209538301U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
This application involves a kind of ftercompction formula non-tower water feeders, comprising: pressurized tank is used for water storage；Air pump is connect, for conveying compressed air into the pressurized tank with the pressurized tank by air inlet pipe；Water pump is connect, for filling the water into the pressurized tank with the pressurized tank by water inlet pipe；Control circuit for detecting atmospheric pressure value and water level inside the pressurized tank, and controls the work of the air pump and the water pump.The utility model ftercompction is filled with the method for compressed air, to replace the starting pressure water level in pressurized tank, release and be previously activated the occupied volume space of pressure water level, so that pressure tankage size is utilized effectively, inflow and water supply also get a promotion；To reduce the number of starts of water pump, the service efficiency and service life of water pump are improved.
Description
Technical field
This application involves automatic water supply system technical fields, and in particular to a kind of ftercompction formula non-tower water feeder.
Background technique
Be made of pressure switch, pressure gauge, water pump and mating valve one of existing non-tower water feeder (pressurized tank) is close
Seal container.Its course of work are as follows: plant-grid connection pressure switch, control water pump starts to fill the water into pressurized tank, and water level rises in tank,
Atmospheric air in tank is compressed, and air pressure rises；Water pump stops when air pressure reaches setting pressure (such as 0.35MPa), and water is high in tank
Speed discharge, water level decreasing, air pressure reduce；Water pump automatic starting again when setting pressure (such as 0.16MPa) is down in air pressure.Zhou Erfu
Begin, automatic cycle.
Non-tower water feeder is exactly a set of small-sized household tap water system, it can allow the residence for not accessing tap water pipe network
The people, which enjoy, convenient, healthy as tap water uses water.The flow velocity of non-tower water feeder is high, pressure is big, can meet solar energy, heat
The hydraulic demand of the drainage facility such as hydrophone, washing machine, WC pans, it can also be used to secondary booster, agricultural irrigation of tap water etc..
In the related technology, existing non-tower water feeder can always exist a starting pressure during the work time, in pressurized tank
Power water level, this part water will not be as discharges of supplying water, to consume a part of volume space of pressurized tank.This is also to cause to press
Power tank inflow and water supply is few, water pump starts frequent, ineffective main cause.Water pump frequent starting is both unfavorable for saving
Can, and reduce the service life of water pump.
In addition, the starting pressure of existing non-tower water feeder setting is higher, then performance is poorer.For example starting pressure is set as
When 0.1MPa, starting pressure water level can consume the 50% of tankage size；When being set as 0.2MPa, 75% tankage size can be consumed；Such as
Fruit is applied in 40 meters of high buildings, and the starting pressure of non-tower water feeder needs to be set as 0.4MPa or more, will consume in this way
80% or more tankage size.As it can be seen that the effective of pressurized tank can be become smaller using capacity, use value with the raising of starting pressure
Also become smaller.
Utility model content
To be overcome the problems, such as present in the relevant technologies at least to a certain extent, the application provides a kind of ftercompction formula and supplies without tower
Hydrophone.
According to an embodiment of the present application, a kind of ftercompction formula non-tower water feeder is provided, comprising:
Pressurized tank is used for water storage；
Air pump is connect, for conveying compressed air into the pressurized tank with the pressurized tank by air inlet pipe；
Water pump is connect, for filling the water into the pressurized tank with the pressurized tank by water inlet pipe；
Control circuit for detecting atmospheric pressure value and water level inside the pressurized tank, and controls the air pump and the water
The work of pump.
Further, the control circuit includes pressure switch；The pressure switch is connected to the master of the control circuit
In power supply line；
External power supply is powered by the pressure switch to the air pump.
Further, the control circuit further includes the first relay；The contact sets of first relay are connected to institute
It states between air pump and the pressure switch.
Further, the control circuit further includes contactor；External power supply is supplied by the contactor to the water pump
Electricity.
Further, the control circuit further includes the second relay, third relay, the 4th relay and the 5th relay
Device；
Coil one end of first relay is electrically connected with contact sets one end of second relay；
Contact sets one end of second relay is electrically connected with coil one end of the third relay；
Contact sets one end of the third relay is electrically connected with contact sets one end of the 4th relay；
Contact sets one end of 4th relay is electrically connected with contact sets one end of the 5th relay.
Further, the control circuit further includes transformer and rectifier；
External power supply by the transformer and the rectifier to first relay, the second relay, third after
Electric appliance, the 4th relay, the 5th relay and contactor power supply.
Further, the inside of the pressurized tank is additionally provided with low water level electrode contact, high water level electrode contact and public
Electrode contacts；
The lowermost end of the low water level electrode contact extends close to the side of the pressurized tank bottom end；The high water level electricity
The lowermost end of pole contact extends close to the side of the pressure upper end；The lowermost end of the public electrode contact is not higher than institute
State the lowermost end of low water level electrode contact；
The low water level electrode contact is electrically connected by triode with coil one end of the 4th relay；The Gao Shui
Position electrode contacts are electrically connected by triode with coil one end of the 5th relay；The public electrode contact with it is described whole
Flow the anode connection of the output end of device.
Further, the control circuit further includes electro connecting pressure gauge；The electro connecting pressure gauge includes three contacts,
Respectively with coil one end of second relay, contact sets one end of second relay, the 5th relay line
Enclose one end electrical connection.
Further, the side of the close bottom end inside the pressurized tank is additionally provided with floating ball flashboard.
Further, it is provided on the connecting line of the water pump and the pressurized tank into water check-valves；
Breather check valve is provided on the connecting line of the air pump and the pressurized tank.
The technical solution that embodiments herein provides can include the following benefits:
The utility model uses the scheme of ftercompction (being filled with compressed air), to replace through gas in water filling adherence pressure tank
The technology of pressure is activated the occupied volume space of pressure water level to release in the prior art, obtains the capacity of pressurized tank
To effective use, inflow and water supply get a promotion；To reduce the number of starts of water pump, the use effect of water pump is improved
Rate and service life.No matter the ftercompction formula non-tower water feeder of the utility model starts pressure there is no pressure water level is started
Power is how many, need to only control air pump and carry out ftercompction, and effective use of pressurized tank will not be reduced because starting the raising of pressure
Capacity.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Fig. 1 is a kind of piping connection schematic diagram of ftercompction formula non-tower water feeder shown according to an exemplary embodiment.
Fig. 2 is a kind of circuit diagram of the control circuit of ftercompction formula non-tower water feeder shown according to an exemplary embodiment.
In figure: 1- pressurized tank；2- electro connecting pressure gauge；3- pressure switch；4- breather check valve；5- water inlet check-valves；6-
Floating ball flashboard；7- water supply pressure reducing valve；8- water supply ball valve；9- blowdown valve.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The consistent example of some aspects be described in detail in claims, the application.
Fig. 1 is a kind of piping connection schematic diagram of ftercompction formula non-tower water feeder shown according to an exemplary embodiment.It should
Ftercompction formula non-tower water feeder includes:
Pressurized tank 1 is used for water storage；The pressurized tank be sealing container, capacity can according to specific use demand into
Row design.
Air pump M1 is connect, for conveying compressed air into the pressurized tank 1 with the pressurized tank 1 by air inlet pipe；Tool
Body, air inlet pipe is connected to the top of pressurized tank 1, makes the air communication in air pump M1 and pressurized tank 1.
Water pump M2 is connect, for filling the water into the pressurized tank 1 with the pressurized tank 1 by water inlet pipe；Specifically, into
Water pipe is connected to the bottom end of pressurized tank 1.
Control circuit for detecting atmospheric pressure value and water level inside the pressurized tank 1, and controls the air pump M1 and described
The work of water pump M2.By detecting air pressure, control air pump M1 is filled with compressed air into pressurized tank 1, when keeping water level lower, pressure
Air pressure in tank 1 is still higher than atmospheric pressure, being capable of normal water supply.By sensed water level, control water pump M2 is in time into pressurized tank 1
Water filling.
The utility model uses the scheme of ftercompction (being filled with compressed air), to replace through gas in water filling adherence pressure tank
The technology of pressure is activated the occupied volume space of pressure water level to release in the prior art, obtains the capacity of pressurized tank
To effective use, inflow and water supply get a promotion；To reduce the number of starts of water pump, the use effect of water pump is improved
Rate and service life.No matter the ftercompction formula non-tower water feeder of the utility model starts pressure there is no pressure water level is started
Power is how many, need to only control air pump and carry out ftercompction, and effective use of pressurized tank will not be reduced because starting the raising of pressure
Capacity.
In some embodiments, the ftercompction formula non-tower water feeder further include: electro connecting pressure gauge 2 and pressure switch 3, the two is equal
It is arranged in the air inlet pipe between air pump M1 and pressurized tank 1, for detecting the air pressure in pressurized tank 1, and will test signal feedback
Into control circuit.
In some embodiments, the side of the close bottom end inside pressurized tank 1 is provided with low water level electrode contact；Pressurized tank 1
The side on internal close top is provided with high water level electrode contact, the two contacts are all connected in control circuit, to examine
Water level in measuring pressure tank 1.
In some embodiments, it is provided with breather check valve 4 in the air inlet pipe between the air pump M1 and the pressurized tank 1,
Prevent the compressed air in pressurized tank 1 from flowing backwards；It is provided on water inlet pipe between the water pump M2 and the pressurized tank 1 into water and stops
Valve 5 is returned, the aqueous reflux in pressurized tank 1 is prevented.
In some embodiments, water supply pipe, water supplying pipe are also connected on the pipeline between check-valves 5 and pressurized tank 1 of intaking
Road is provided with water supply pressure reducing valve 7 and water supply ball valve 8；The bottom end of pressurized tank 1 is also connected with blowoff line, is arranged on blowoff line
There is blowdown valve 9, the water in pressurized tank 1 can be completely exhausted out by blowdown valve 9.
In some embodiments, the side of the close bottom end inside the pressurized tank 1 is additionally provided with floating ball flashboard 6.Work as water level
When higher than floating ball, flashboard is opened；When water level is lower than floating ball, flashboard is closed.Its effect is in the feelings for encountering power failure (or shutdown)
When condition, the compressed air in pressurized tank 1 is prevented to be discharged and (flow into water supply network).If compressed air is discharged, non-tower water feeder
After being switched on again, ftercompction air pump M1 needs to restart ftercompction, causes unnecessary energy waste.
As shown in Fig. 2, the control circuit includes pressure switch 3 in some embodiments；The pressure switch 3 is connected to
On the mains supply line of the control circuit；External power supply is powered by the pressure switch 3 to the air pump M1.
In some embodiments, the control circuit further includes the first relay K1；The contact sets of the first relay K1
It is connected between the air pump M1 and the pressure switch 3.
In some embodiments, the control circuit further includes contactor KM；External power supply is by the contactor KM to institute
State water pump M2 power supply.
In some embodiments, the control circuit further includes the second relay K2, third relay K3, the 4th relay K4
With the 5th relay K5；
Coil one end of the first relay K1 is electrically connected with contact sets one end of the second relay K2；
Contact sets one end of the second relay K2 is electrically connected with coil one end of the third relay K3；
Contact sets one end of the third relay K3 is electrically connected with contact sets one end of the 4th relay K4；
Contact sets one end of the 4th relay K4 is electrically connected with contact sets one end of the 5th relay K5.
It should be noted that the first relay K1 and third relay K3 is normal-open type relay, the 5th relay K5 is
Closed type relay, the second relay K2 and the 4th relay K4 open a closed form for one.Referring to Fig. 2, the second relay K2 and the
Four relay K4 are equal are as follows: left side normally opened contact, right side normally-closed contact.The contact of all relays shown in the drawings is to lose
State under electricity condition.
In some embodiments, the control circuit further include: normally closed button SB1 is connected to the normally closed of the 4th relay K4
Between contact and the contact of the 5th relay K5；Normally opened button SB2, is connected to the normally-closed contact and contactor of the 4th relay K4
Between the contact of KM.
In some embodiments, the control circuit further includes transformer and rectifier；
External power supply is by the transformer and the rectifier to the first relay K1, the second relay K2, the
Three relay K3, the 4th relay K4, the 5th relay K5 and contactor KM power supply.
Referring to Fig. 2, alternating current (220VAC) accesses transformer by pressure switch 3, is converted to low pressure through transformer, rectifier
After direct current (12VDC), to the coil power supply of five relays.
Referring to Fig.1, in some embodiments, the inside of the pressurized tank 1 is additionally provided with low water level electrode contact, high water level electricity
Pole contact and public electrode contact.The lowermost end of the low water level electrode contact extends close to the one of 1 bottom end of pressurized tank
Side；The lowermost end of the high water level electrode contact extends close to the side on 1 top of pressurized tank；The public electrode contact
Lowermost end be not higher than the low water level electrode contact lowermost end；
Referring to Fig. 2, the low water level electrode contact is electrically connected by coil one end of triode and the 4th relay K4
It connects；The high water level electrode contact is electrically connected by triode with coil one end of the 5th relay K5；The common electrical
Pole contact is connect with the anode of the output end of the rectifier.
In some embodiments, the control circuit further includes electro connecting pressure gauge 2；The electro connecting pressure gauge 2 includes three
A contact, respectively with coil one end of the second relay K2, contact sets one end of the second relay K2, the described 5th
Coil one end of relay K5 is electrically connected.
Referring to Fig. 2, three contacts of electro connecting pressure gauge 2 are successively contact b, contact a, contact c from left to right.
A water supply is arranged in the ftercompction formula non-tower water feeder of the application before booting is powered, first on electro connecting pressure gauge 2
Minimum pressure (such as 0.16MPa) and a water pump M2 stopping pressure (such as 0.35MPa), pressure switch 3 be arranged one control
The standby pressure (such as 0.17MPa) of circuit.
Referring to Fig. 2, after which is powered, since the pressure in pressurized tank 1 is lower than minimum pressure (0.16MPa),
The contact b and contact a of electro connecting pressure gauge 2 are connected, and the coil of relay K2 obtains electric, normally opened contact closure conducting, relay K1
Coil obtain the closure conducting of electric, normally opened contact, ftercompction air pump M1 is powered starting, is connected tracheae and conveys compression into pressurized tank 1
Air.When air pressure increases in tank, when reaching minimum pressure (0.16MPa), the contact b and contact a of electro connecting pressure gauge 2 are disconnected,
Coil losing electricity, the normally opened contact of relay K2 resets, and coil losing electricity, the normally opened contact of relay K1 resets, and ftercompction air pump M1 stops
Only work.
Relay K2 coil losing electricity, normally-closed contact reset conducting, power to control circuit；Relay K3 obtains electric, normally opened touching
Point closure conducting；Electric current (220VA) is obtained by the contact of relay K3, the contact of the normally-closed contact of K4, K5, contactor KM coil
Electricity is attracted, contact conducting；Water pump M2, which is powered, to be started, and is filled the water into pressurized tank 1, water level rises.When the water surface touches 1 bottom of pressurized tank
When the low water level electrode contact B in portion, conducting trigger circuit obtain relay K4 coil electric (normally-closed contact disconnects, and normally opened contact closes
It closes)；Since contactor KM is equipped with latching circuit, water pump M2 continues to fill the water into tank, and pressure inside the tank rises.
When pressure reaches standby pressure (0.17MPa), pressure switch 3 is disconnected.Referring to Fig. 2, since pressure switch 3 disconnects
Before, 220V alternating current has passed through the touching of the contact, the normally opened contact of the 4th relay K4, third relay K3 contactor KM
Point, the contact of the first relay K1 and transformer are formed into a loop, even if after pressure switch 3 disconnects, on transformer and rectifier
Still there is electric current to pass through, thus the coil of multiple relays be still electricity condition.Thus water pump M2 works on, pressure inside the tank
Continue to rise, when being more than to stop pressure (0.35MPa), contact a and contact the c conducting of electro connecting pressure gauge 2, relay K5 are obtained
Electricity (when water level rises, water surface arrival is when being arranged in the high water level electrode contact C of 1 internal upper part of pressurized tank, also can trigger circuit make after
Electric appliance K5 obtains electric), normally-closed contact disconnects, contactor KM coil blackout, and contact, which resets, to be disconnected, and water pump M2 stops working, control electricity
Road is also at off-position.
When supplying water, the water high speed in pressurized tank 1 is discharged, and pressure inside the tank reduces.When pressure is lower than stopping pressure
When (0.35MPa), the contact a and contact c of electro connecting pressure gauge 2 are disconnected, and relay K5 power loss (works as water level decreasing, the water surface is lower than
When the C of high water level electrode contact, can also make relay K5 power loss), normally-closed contact resets conducting.When pressure is lower than standby pressure
When (0.17MPa), pressure switch 3 is connected, and control circuit is powered, and relay K3 obtains electric, normally opened contact closure.Still due to water level
Higher than low water level electrode contact B, relay K4 be still electricity condition, normally opened contact closure conducting, control circuit be in it is standby
State.
When water level decreasing is lower than low water level electrode contact B, trigger signal is interrupted, and relay K4 power loss, normally-closed contact is led
Logical, electric current (220VA) is powered by relay K3, K4, K5 to contactor KM, and the contact conducting of contactor KM, water pump M2 is again
Starting, into next duty cycle.
SB1 button is pressed, the water in the water pump M2 force start in automatic control mode can be made, when water level (or pressure)
When reaching setting water level (or pressure), water pump M2 is automatically stopped.SB2 button is pressed, the water in automatic control mode can be made
It pumps M2 to force to stop, when water level decreasing is to setting position, water pump M2 can start automatically.
It is compared through actual measurement, by taking the common 0.4 cubic metre of non-tower water feeder of an average family as an example, water pump is from starting
To being a duty cycle at the time of stopping arriving starting next time again, in 1 capacity (0.4m of pressurized tank3), starting pressure
In the case that (0.16MPa), stopping pressure (0.35MPa) remain unchanged: the non-tower water feeder of the prior art is in a work week
Inflow and water supply in phase are 0.07 cubic metre；The ftercompction formula non-tower water feeder of the application within a duty cycle into
Water and water supply are 0.16 cubic metre.
One family of four, 1 year water consumption is calculated by 45 cubic metres, then existing non-tower water feeder needs to start 643 times,
And the ftercompction formula non-tower water feeder of the application need to only start 282 times.As it can be seen that the technical solution of the application significantly reduces water pump
The number of starts, efficiency is obviously improved.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of ftercompction formula non-tower water feeder characterized by comprising
Pressurized tank is used for water storage；
Air pump is connect, for conveying compressed air into the pressurized tank with the pressurized tank by air inlet pipe；
Water pump is connect, for filling the water into the pressurized tank with the pressurized tank by water inlet pipe；
Control circuit for detecting atmospheric pressure value and water level inside the pressurized tank, and controls the air pump and the water pump
Work.
2. ftercompction formula non-tower water feeder according to claim 1, it is characterised in that: the control circuit includes that pressure is opened
It closes；The pressure switch is connected on the mains supply line of the control circuit；
External power supply is powered by the pressure switch to the air pump.
3. ftercompction formula non-tower water feeder according to claim 2, it is characterised in that: the control circuit further include first after
Electric appliance；The contact sets of first relay are connected between the air pump and the pressure switch.
4. ftercompction formula non-tower water feeder according to claim 3, it is characterised in that: the control circuit further includes contact
Device；External power supply is powered by the contactor to the water pump.
5. ftercompction formula non-tower water feeder according to claim 4, it is characterised in that: the control circuit further include second after
Electric appliance, third relay, the 4th relay and the 5th relay；
Coil one end of first relay is electrically connected with contact sets one end of second relay；
Contact sets one end of second relay is electrically connected with coil one end of the third relay；
Contact sets one end of the third relay is electrically connected with contact sets one end of the 4th relay；
Contact sets one end of 4th relay is electrically connected with contact sets one end of the 5th relay.
6. ftercompction formula non-tower water feeder according to claim 5, it is characterised in that: the control circuit further includes transformer
And rectifier；
External power supply by the transformer and the rectifier to first relay, the second relay, third relay,
4th relay, the 5th relay and contactor power supply.
7. ftercompction formula non-tower water feeder according to claim 6, it is characterised in that: the inside of the pressurized tank is additionally provided with
Low water level electrode contact, high water level electrode contact and public electrode contact；
The lowermost end of the low water level electrode contact extends close to the side of the pressurized tank bottom end；The high water level electrode touching
The lowermost end of point extends close to the side of the pressure upper end；The lowermost end of the public electrode contact is not higher than described low
The lowermost end of level electrode contact；
The low water level electrode contact is electrically connected by triode with coil one end of the 4th relay；The high water level electricity
Pole contact is electrically connected by triode with coil one end of the 5th relay；The public electrode contact and the rectifier
Output end anode connection.
8. ftercompction formula non-tower water feeder according to claim 5, it is characterised in that: the control circuit further includes electric contact
Pressure gauge；The electro connecting pressure gauge include three contacts, respectively with coil one end of second relay, described second after
Coil one end electrical connection of contact sets one end of electric appliance, the 5th relay.
9. ftercompction formula non-tower water feeder according to claim 1-8, it is characterised in that: inside the pressurized tank
Side close to bottom end is additionally provided with floating ball flashboard.
10. ftercompction formula non-tower water feeder according to claim 1-8, it is characterised in that: the water pump with it is described
It is provided on the connecting line of pressurized tank into water check-valves；
Breather check valve is provided on the connecting line of the air pump and the pressurized tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009362.5U CN209538301U (en) | 2019-01-03 | 2019-01-03 | Ftercompction formula non-tower water feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009362.5U CN209538301U (en) | 2019-01-03 | 2019-01-03 | Ftercompction formula non-tower water feeder |
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| Publication Number | Publication Date |
|---|---|
| CN209538301U true CN209538301U (en) | 2019-10-25 |
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ID=68268448
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| CN201920009362.5U Active CN209538301U (en) | 2019-01-03 | 2019-01-03 | Ftercompction formula non-tower water feeder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457761A (en) * | 2019-01-03 | 2019-03-12 | 张无欣 | Ftercompction formula non-tower water feeder |
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2019
- 2019-01-03 CN CN201920009362.5U patent/CN209538301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457761A (en) * | 2019-01-03 | 2019-03-12 | 张无欣 | Ftercompction formula non-tower water feeder |
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