CN207248250U - A kind of type double flow meter used for water-softening plant salt-sucking port - Google Patents
A kind of type double flow meter used for water-softening plant salt-sucking port Download PDFInfo
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- CN207248250U CN207248250U CN201721290838.4U CN201721290838U CN207248250U CN 207248250 U CN207248250 U CN 207248250U CN 201721290838 U CN201721290838 U CN 201721290838U CN 207248250 U CN207248250 U CN 207248250U
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Abstract
The utility model discloses a kind of type double flow meter used for water-softening plant salt-sucking port, including flow meter body component；Flow meter body component includes flowmeter shell, two flowmeter current dividers are set in the middle part of flowmeter shell inner cavity, flowmeter current divider outer ring is fixed on flowmeter shell inner cavity wall, bushing is equipped with flowmeter current divider inner ring, impeller is equipped between two flowmeter current dividers, there is blade in circumference of impeller, be equipped with magnet steel between two blades, impeller middle spindle both ends are penetrated in bushing；The magnetic induction probe of Hall element component is arranged on flowmeter shell and the corresponding position of impeller；Water pipe, 90 ° of bent subs are connected by rapid connector component with flowmeter shell inner cavity end.The flowmeter can carry out accurate measurement to the water injection rate by control valve salt-sucking port and suction salt amount.
Description
Technical field
It the utility model is related to water softening plant, especially a kind of bidirectional traffics used for water-softening plant salt-sucking port
Meter.
Background technology
The basic principle of water softening plant is chemically reacted by resin and water, replaces the calcium ions and magnesium ions in water,
Play the role of softening water.Resin is recycled, after efficiency lost resin, can utilize brine and resin
Reaction is learned, allows resin to possess soft water function again.It is this function that resin possesses soft water again is referred to as again using brine
It is raw.
Resin regeneration is generally divided into following steps by control valve：Backwash, inhales salt, is just washing and water filling.The effect of backwash
It is that resin from bottom to top recoils, resin is broken up, prepares to inhale salt in next step, allow brine can be more abundant with resin
Contact.Inhale salt action exactly to chemically react brine inspiration resin container with resin, allow resin to possess soft water function again.
Just washing with backwash on the contrary, current from top to bottom compress resin, current can be slack-off by resin velocity so during soft water,
Make the time of resin softened water more abundant.Water filling carries out dissolved salt in water filling is referred to toward salt box, is done to inhale salt during regeneration next time
Prepare.Regenerating each time all needs to consume a certain amount of salt.
Water softening plant is typically all to control multipath stream current at the same time by control valve, realizes that resin regeneration operates.Control
Valve is equipped with multiple pipe interfaces, one of them is salt-sucking port, and when inhale salt operation, control valve leads to the saline solution in salt box
Cross in salt-sucking port suction control valve in pipeline, then the pipe interface resin by injection tank being connected with resin jar by control valve,
When carrying out water filling, pipeline circulation path is switched accordingly in control valve, and clear water is first passed through control valve inner tube, then passes through control
Valve salt-sucking port injects salt box.
The salt-sucking port of water softening plant control valve on the market is all not equipped with flowmeter at present, mainly there is two originals
Cause：1st, the water flow velocity of salt-sucking port is generally smaller, it is difficult to meet the condition that flowmeter impeller starts；2nd, general impeller axle is single
Point is fixed, small angle inclination downwardly gravitating, when current process, it is necessary to which impeller righting picking-up first could be started to rotate by current.
And in order to measure water injection rate, as shown in Figure 1, usually in the salt-sucking port installation rubber pad of control valve, rubber pad
The heart has a perforate, and certain flow velocity is kept when current can be made to pass through among hole, and when flow velocity increase, then rubber pad deforms,
Middle perforate diminishes, and makes current slack-off.The time passed through again by current calculates water injection rate.This metering method is fuzzy meter
Amount, deviation are larger.
In conclusion water softening plant effectively to the water injection rate by control valve salt-sucking port and can not inhale salt amount at present
Accurately measured.
The content of the invention
Goal of the invention：The utility model aim is to be directed to prior art problem, there is provided one kind is for water-softening plant salt-sucking port
The type double flow meter used, can be transferred through the flowmeter by control valve salt-sucking port water injection rate and suction salt amount and carries out accurate measurement.
To achieve these goals, the utility model employs following technical solution：It is a kind of to inhale salt for water-softening plant
The type double flow meter that uses of mouth, including water pipe, rapid connector component, Hall element component, flow meter body component, 90 ° curved connect
Head, flowmeter stent；
The flow meter body component includes flowmeter shell, and two flowmeters are arranged at intervals in the middle part of flowmeter shell inner cavity
Current divider, flowmeter current divider include inner ring and outer ring, and flowmeter current divider outer ring is fixed on flowmeter shell inner cavity wall, stream
It is connected between gauge current divider outer ring and inner ring by some ribs, bushing is equipped with flowmeter current divider inner ring, in two stream
Impeller is equipped between gauge current divider, some blades are evenly equipped with circumference of impeller, magnet steel is equipped between two adjacent blades,
Impeller middle spindle both ends are penetrated in bushing；
The Hall element component is popped one's head in including magnetic induction, and it is corresponding with impeller that magnetic induction probe is arranged on flowmeter shell
Position；
Described water pipe one end is connected by rapid connector component with flowmeter shell inner cavity one end, the water pipe other end and soft water
The salt box of equipment is connected；
Described 90 ° of bent sub one end are connected by rapid connector component with the flowmeter shell inner cavity other end, 90 ° of bent subs
The other end is connected with the control valve salt-sucking port of water-softening plant；
The flowmeter stent is used to support flowmeter shell.
Further, the side of the flowmeter current divider inner ring away from impeller has the arc conical surface.
Further, the impeller middle spindle coordinates with sleeve clearances, and in impeller middle spindle both ends insertion corundum, corundum is solid
It is scheduled on bushing inner wall.
Further, the rapid connector component includes connecing shell, guide sleeve soon, and the tail end for connecing shell soon connects equipped with external screw thread
Head, male connection coordinates with screw socket in flowmeter shell inner cavity both ends to be screwed, and guide sleeve is inserted in connects shell inner cavity front end, guide sleeve soon
The card ear of outer ring is caught in the card slot of shell inner cavity wall, and guide sleeve inner wall is equipped with back-off.
Further, described connect soon is equipped with annular relief a between shell inner cavity and male connection endoporus, and external screw thread connects
Head endoporus is equipped with salt road current divider, and salt road current divider includes diversion sleeve and rubber washer, and diversion sleeve is fixed in male connection
On hole wall, diversion sleeve one end is adjacent to annular relief a, and the diversion sleeve other end is equipped with annular relief b, annular relief b and ring
Annular groove is formed between shape lug boss a, rubber washer is arranged in annular groove, and rubber washer is cylindrical between diversion sleeve, rubber
Gap is left between packing ring both sides and annular relief a, annular relief b.
Further, the flowmeter outer casing bottom is equipped with support base, and support base offers stent card slot, flow along longitudinal direction
Meter pedestal lower end is fixed, and flowmeter pedestal upper end is caught in stent card slot, and regulating tank is offered along longitudinal direction on flowmeter stent,
Adjusting trench bottom offers the through hole through flowmeter stent and support base in the horizontal direction, and screw penetrates in through hole and passes through spiral shell
Mother's locking.
The accessible effect of this technical solution：
1st, the startup flow of flowmeter is small, meets the measurement request of weep；
2nd, water injection rate and suction salt amount can be transferred through flowmeter metering, more accurately；
3rd, quick connection, plug and play, it is possible to achieve liquid can be achieved to connect design soon in flowmeter two on mounting means
The quick connection of the pipeline of disengaging, can effectively improve assembling and production efficiency, cost-effective, the drawbacks of avoiding threaded connection；
4th, different pore size rubber washer is coordinated to realize different maximum flow rates, wide range of measurement；
5th, the water pipe of both ends fast joint assembling is a kind of general caliber, can facilitate and existing equipment is transformed, and transformation process is good
Operation is very convenient quick；
6th, the flowermeter is small, is suitable for the less situation of water softening device installation space.
Brief description of the drawings
Fig. 1 is existing water-softening plant control valve salt-sucking port structure diagram；
Fig. 2 is the outline drawing of the type double flow meter used for water-softening plant salt-sucking port of the utility model；
Fig. 3 is the profile of the type double flow meter used for water-softening plant salt-sucking port of the utility model；
Fig. 4 is the structure diagram of flow meter body component；
Fig. 5 is the structure diagram of impeller；
Fig. 6 is the scheme of installation of magnet steel；
Fig. 7 is the structure diagram of rapid connector component；
Fig. 8 is the profile of guide sleeve；
Fig. 9 is the end view drawing of guide sleeve；
Figure 10 is the scheme of installation of Hall element component and flowmeter stent；
Figure 11 is the scheme of installation of flowmeter stent.
In figure：1- control valves, 2- salt-sucking ports, 3- water pipes, 4- rapid connector components, 5- Hall element components, 6- flowmeters
Body assembly, 7-90 ° of bent sub, 8- flowmeter stents, 4-1- connect shell, 4-2- guide sleeves, 4-3- water pipe sealing rings, 4-4- streams soon
Gauge sealing ring, 4-5- male connections, 4-6- card ears, 4-7- back-offs, 4-8- annular reliefs a, 5-1- magnetic induction probe, 6-
1- flowmeter shells, 6-2- rubber washers, 6-3- diversion sleeves, 6-4- flowmeter current dividers, 6-5- corundum, 6-6- bushings, 6-7-
Impeller, 6-8- magnet steel, 6-9- blades, 6-10- annular reliefs b, 6-11- support base, the 6-12- arc conical surfaces, 8-1- regulating tanks,
8-2- screws, 8-3- nuts.
Embodiment：
Further explanation is done to the utility model below in conjunction with the accompanying drawings.
As shown in Figures 2 and 3, a kind of type double flow meter used for water-softening plant salt-sucking port of the utility model, including
Water pipe 3, rapid connector component 4, Hall element component 5, flow meter body component 6,90 ° of bent subs 7, flowmeter stents 8.
As shown in the 6 of Fig. 4, the flow meter body component 6 includes flowmeter shell 6-1, in flowmeter shell 6-1 inner cavities
Portion is arranged at intervals two flowmeter current divider 6-4, and flowmeter current divider 6-4 includes inner ring and outer ring, outside flowmeter current divider 6-4
Circle is fixed on by way of interference fit on flowmeter shell 6-1 internal chamber walls, between flowmeter current divider 6-4 outer rings and inner ring
It is connected by some ribs, is equipped with bushing 6-6 in flowmeter current divider 6-4 inner rings, is set between two flowmeter current divider 6-4
There is impeller 6-7, some blade 6-9 be evenly equipped with impeller 6-7 circumference, magnet steel 6-8 is equipped between two adjacent blade 6-9,
Impeller 6-7 central shafts both ends are penetrated in bushing 6-6.
Impeller 6-7 central shafts are made of stainless steel, and both ends are the very high sphere of circularity, are had among impeller 6-7 central shafts
Groove, impeller 6-7 is plastic-injection molded part, and when injection molding, the bore section plastic cement of impeller 6-7 is mounted to impeller 6-7
In central shaft groove, impeller 6-7 can be made and fixed between impeller 6-7 central shafts, impeller 6-7 will not axial float.
Preferably, the impeller 6-7 central shafts and bushing 6-6 clearance fits, the central shaft of impeller 6-7 can be in bushing 6-6
Inside rotate freely, in the arc groove of impeller 6-7 central shafts both ends sphere insertion corundum 6-5, corundum 6-5 passes through interference fit
Mode is fixed on bushing 6-6 inner walls.Since corundum 6-5 has the characteristics that hardness is high, wear-resisting property is good, impeller 6-7 centers can be made
The rotating frictional force of axis is very small, is greatly improved the service life of flow meter body component 6.
When current are by the circular passage between flowmeter current divider 6-4 inner rings and outer ring, can promote blade 6-9,
Impeller 6-7 rotates, and in order to reduce resistance of the current inside flow meter body component 6, the flowmeter current divider 6-4 inner rings are remote
Side from impeller 6-7 has arc conical surface 6-12, in this way, current can be made to be dispersed into one under arc conical surface 6-12 guiding roles
A uniform circular flow, then flows through blade 6-9, reduces 6 water flow inside kinetic energy damage of flow meter body component to greatest extent
Lose.So whole impeller 6-7 volumes can do it is very small, less than the half of existing impeller.
As shown in figs. 2 and 10, the Hall element component 5 includes magnetic induction probe 5-1, and magnetic induction probe 5-1 is arranged on
Flowmeter shell 6-1 and the corresponding positions of impeller 6-7.
Magnet steel 6-8 has metal magnetic element, can realize tally function by coordinating with magnetic induction probe 5-1.Magnet steel 6-8 mass
Larger, general flowmeter volume is larger, and the distance in impeller and axle center is also larger, in order to guarantee to be detected by Hall element 5,
Position that can only be by magnet steel close proximity to vane edge.And the impeller 6-7 small volumes of this flowmeter, impeller 6-7 and central shaft
Distance it is also smaller, ensure that magnet steel 6-8 within the detection range of magnetic induction probe 5-1, so starts impeller 6-7 rotation
Startup power is smaller away from meeting, water flow is required smaller.
As shown in Fig. 2,7,8,9, described 3 one end of water pipe passes through rapid connector component 4 and flowmeter shell 6-1 inner cavities one end
It is connected, 3 other end of water pipe is connected with the salt box of water-softening plant；Described 90 ° of bent subs, 7 one end passes through rapid connector component 4 and stream
The gauge shell 6-1 inner cavities other end is connected, and 90 ° of 7 other ends of bent sub are connected with the control valve salt-sucking port of water-softening plant.
In the present embodiment, the rapid connector component 4 includes meeting shell 4-1, guide sleeve 4-2 soon, connects the tail end of shell 4-1 soon
Equipped with male connection 4-5, male connection 4-5 coordinates with screw socket in the both ends of flowmeter shell 6-1 inner cavities to be screwed, guide sleeve 4-2
It is inserted in and connects shell 4-1 inner cavities front end soon, the card ear 4-6 of guide sleeve 4-2 outer rings is caught in the card slot of shell 4-1 internal chamber walls, guide sleeve 4-2
Inner wall is equipped with back-off 4-7.Guide sleeve 4-2, card ear 4-6, back-off 4-7 are metal material, and three can be by being integrally formed metal
Injection is integrally formed.The connection status of water pipe 3 and rapid connector component 4 is shown in Fig. 7, by 3 end of water pipe insertion guide sleeve 4-2
And extend and connect shell 4-1 inner cavities soon, back-off 4-7 can anti-antipriming pipe 3 from guide sleeve 4-2 slip, when pull water pipe 3 power it is bigger, fall
Button 4-7 is bigger to the grip of water pipe 3, and water pipe 3 is more difficult to depart from.90 ° of bent subs 7 also use identical assembly method and quick coupling
The guide sleeve 4-2 of component 4 is connected.
In order to ensure the leakproofness of the flowmeter, water pipe 3 it is cylindrical with connecing soon between shell 4-1 internal chamber walls, 90 ° of bent subs
7 it is cylindrical be equipped with water pipe sealing ring 4-3 between shell 4-1 internal chamber walls with connecing soon, be equipped with flowmeter male connection 4-5 is cylindrical
Sealing ring 4-4.
As illustrated in figures 4 and 7, described connect soon is equipped with annular relief between shell 4-1 inner cavities and male connection 4-5 endoporus
A4-8, male connection 4-5 endoporus are equipped with salt road current divider, and salt road current divider includes diversion sleeve 6-3 and rubber washer 6-2, point
Stream set 6-3 is fixed on by way of interference fit on male connection 4-5 inner hole walls, and diversion sleeve 6-3 one end is adjacent to convex annular
Rise portion a4-8, the diversion sleeve 6-3 other ends be equipped with annular relief b6-10, annular relief b6-10 and annular relief a4-8 it
Between form annular groove, rubber washer 6-2 is arranged in annular groove, between the cylindrical 6-3 with diversion sleeve of rubber washer 6-2, rubber pad
Gap is left between circle 6-2 both sides and annular relief a4-8, annular relief b6-10.
Rubber washer 6-2's is rubber material, and there is a circular hole in centre.Rubber washer 6-2 can be in annular groove vertically
With outer radial activity, when there is current process, rubber washer 6-2 is moved by thrust to impeller 6-7, is pressed onto annular relief b6-10
On play sealing function, current is passed through from middle circular hole, can be by the pore size control flowmeter of rubber washer 6-2 most
Big flow velocity.
As shown in FIG. 10 and 11, the flowmeter stent 8 is used to support flowmeter shell 6-1.In the present embodiment, the stream
Gauge shell 6-1 bottoms are equipped with support base 6-11, and support base 6-11 offers stent card slot, 8 lower end of flowmeter stent along longitudinal direction
Fixed, 8 upper end of flowmeter stent is caught in stent card slot, and regulating tank 8-1 is offered along longitudinal direction on flowmeter stent 8, is adjusted
Groove 8-1 bottoms offer the through hole through flowmeter stent 8 and support base 6-11 in the horizontal direction, and screw 8-2 is penetrated in through hole
And locked by nut 8-3.After unclamping nut 8-3,8 upper end of flowmeter stent is sliding up and down along stent card slot with support base 6-11
It is dynamic, easy to adjust the height of support flowmeter shell 6-1.
The installation step of the flowmeter is as follows：
Assemble flow meter body part：Corundum 6-5 is put into bushing 6-6, bushing 6-6 loads in flowmeter current divider 6-4
Circle, one of flowmeter current divider 6-4 is filled in flowmeter shell 6-1, and impeller 6-7 central shafts one end is loaded flowmeter
In current divider 6-4 inner ring bushings 6-6, then another flowmeter current divider 6-4 filled in flowmeter shell 6-1, and by impeller
The 6-7 central shaft other ends are fitted into flowmeter current divider 6-4 inner ring bushings 6-6；
Rapid connector component 4 assembles：Water pipe sealing ring 4-3 is loaded and connects shell 4-1 inner cavities soon, guide sleeve 4-2 is filled in, will
Flowmeter sealing ring 4-4 is sleeved on that male connection 4-5 is cylindrical, and Zai Jiangyan roads current divider fills in male connection 4-5 endoporus,
General assembly：By in the male connection 4-5 of two rapid connector components 4 and flowmeter shell 6-1 inner cavities both ends end
Screw socket, which coordinates, to be screwed；Water pipe 3 is inserted into the guide sleeve 4-2 of rapid connector component 4 again, flowmeter shell 6-1 is fixed on flow
Count on stent 8,90 ° of bent subs 7 are inserted into the guide sleeve 4-2 of rapid connector component 4,90 ° of bent subs 7 are connected by external pipeline
The salt-sucking port of water-softening plant control valve.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
- A kind of 1. type double flow meter used for water-softening plant salt-sucking port, it is characterised in that：Including water pipe (3), quick coupling Component (4), Hall element component (5), flow meter body component (6), 90 ° of bent subs (7), flowmeter stent (8)；The flow meter body component (6) includes flowmeter shell (6-1), is arranged at intervals in the middle part of flowmeter shell (6-1) inner cavity Two flowmeter current dividers (6-4), flowmeter current divider (6-4) include inner ring and outer ring, and flowmeter current divider (6-4) outer ring is solid It is scheduled on flowmeter shell (6-1) internal chamber wall, flowmeter current divider (6-4) is connected between outer ring and inner ring by some ribs, Bushing (6-6) is equipped with flowmeter current divider (6-4) inner ring, impeller (6- is equipped between two flowmeter current dividers (6-4) 7) some blades (6-9), are evenly equipped with impeller (6-7) circumference, magnet steel (6-8) is equipped between two adjacent blades (6-9), Impeller (6-7) central shaft both ends are penetrated in bushing (6-6)；The Hall element component (5) includes magnetic induction probe (5-1), and magnetic induction probe (5-1) is arranged on flowmeter shell (6- 1) with impeller (6-7) corresponding position；Described water pipe (3) one end is connected by rapid connector component (4) with flowmeter shell (6-1) inner cavity one end, and water pipe (3) is another One end is connected with the salt box of water-softening plant；Described 90 ° of bent subs (7) one end is connected by rapid connector component (4) with flowmeter shell (6-1) inner cavity other end, 90 ° of bent sub (7) other ends are connected with the control valve salt-sucking port of water-softening plant；The flowmeter stent (8) is used to support flowmeter shell (6-1).
- A kind of 2. type double flow meter used for water-softening plant salt-sucking port according to claim 1, it is characterised in that：Institute Stating side of flowmeter current divider (6-4) inner ring away from impeller (6-7) has the arc conical surface (6-12).
- A kind of 3. type double flow meter used for water-softening plant salt-sucking port according to claim 1, it is characterised in that：Institute Impeller (6-7) central shaft and bushing (6-6) clearance fit are stated, impeller (6-7) central shaft both ends insertion corundum (6-5) is interior, corundum (6-5) is fixed on bushing (6-6) inner wall.
- A kind of 4. type double flow meter used for water-softening plant salt-sucking port according to claim 1, it is characterised in that：Institute Stating rapid connector component (4) includes connecing shell (4-1), guide sleeve (4-2) soon, and the tail end for connecing shell (4-1) soon connects equipped with external screw thread Head (4-5), male connection (4-5) coordinates with screw socket in flowmeter shell (6-1) inner cavity both ends to be screwed, and guide sleeve (4-2) is inserted in Shell (4-1) inner cavity front end is connect soon, and the card ear (4-6) of guide sleeve (4-2) outer ring is caught in the card slot of shell (4-1) internal chamber wall, leads Cover (4-2) inner wall and be equipped with back-off (4-7).
- A kind of 5. type double flow meter used for water-softening plant salt-sucking port according to claim 4, it is characterised in that：Institute State to connect soon and annular relief a (4-8), male connection are equipped between shell (4-1) inner cavity and male connection (4-5) endoporus (4-5) endoporus is equipped with salt road current divider, and salt road current divider includes diversion sleeve (6-3) and rubber washer (6-2), diversion sleeve (6-3) It is fixed on male connection (4-5) inner hole wall, diversion sleeve (6-3) one end is adjacent to annular relief a (4-8), diversion sleeve (6-3) The other end is equipped with annular relief b (6-10), and annular is formed between annular relief b (6-10) and annular relief a (4-8) Groove, rubber washer (6-2) are arranged in annular groove, between cylindrical (6-3) with diversion sleeve of rubber washer (6-2), rubber washer (6- 2) gap is left between both sides and annular relief a (4-8), annular relief b (6-10).
- A kind of 6. type double flow meter used for water-softening plant salt-sucking port according to claim 1, it is characterised in that：Institute State flowmeter shell (6-1) bottom and be equipped with support base (6-11), support base (6-11) offers stent card slot, flowmeter along longitudinal direction Stent (8) lower end is fixed, and flowmeter stent (8) upper end is caught in stent card slot, is offered on flowmeter stent (8) along longitudinal direction Regulating tank (8-1), regulating tank (8-1) bottom are offered through flowmeter stent (8) and support base (6-11) in the horizontal direction Through hole, screw (8-2) are penetrated in through hole and locked by nut (8-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721290838.4U CN207248250U (en) | 2017-10-09 | 2017-10-09 | A kind of type double flow meter used for water-softening plant salt-sucking port |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721290838.4U CN207248250U (en) | 2017-10-09 | 2017-10-09 | A kind of type double flow meter used for water-softening plant salt-sucking port |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588812A (en) * | 2017-10-09 | 2018-01-16 | 南京福碧源环境技术有限公司 | A kind of type double flow meter for being available for water-softening plant salt-sucking port to use |
| WO2021000367A1 (en) * | 2019-07-02 | 2021-01-07 | 南京福碧源环境技术有限公司 | Flow pressure sensor |
-
2017
- 2017-10-09 CN CN201721290838.4U patent/CN207248250U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588812A (en) * | 2017-10-09 | 2018-01-16 | 南京福碧源环境技术有限公司 | A kind of type double flow meter for being available for water-softening plant salt-sucking port to use |
| WO2019071973A1 (en) * | 2017-10-09 | 2019-04-18 | 南京福碧源环境技术有限公司 | Bidirectional flow meter adapted for use in salt suction port of water softening apparatus |
| WO2021000367A1 (en) * | 2019-07-02 | 2021-01-07 | 南京福碧源环境技术有限公司 | Flow pressure sensor |
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