CN110440037B - Control valve accessory and water softener comprising same - Google Patents
Control valve accessory and water softener comprising same Download PDFInfo
- Publication number
- CN110440037B CN110440037B CN201910399029.4A CN201910399029A CN110440037B CN 110440037 B CN110440037 B CN 110440037B CN 201910399029 A CN201910399029 A CN 201910399029A CN 110440037 B CN110440037 B CN 110440037B
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- CN
- China
- Prior art keywords
- port
- valve
- control valve
- chamber
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 7
- 241000555745 Sciuridae Species 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000670 limiting effect Effects 0.000 description 25
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000003825 pressing Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 235000015598 salt intake Nutrition 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1823—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for ball check valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a control valve fitting and a water softener comprising the same. The control valve fitting includes: the regulating valve and the check valve are arranged in the body; the body is provided with a first port, a second port, a first fluid channel and a second fluid channel, and the first fluid channel and the second fluid channel are communicated between the first port and the second port; a check valve is disposed in the first fluid passage and is configured to prevent fluid in the first fluid passage from flowing from the first port to the second port; a regulating valve is disposed in the second fluid passage and is used to regulate the total amount of fluid flowing through the second fluid passage. The water softener comprises a salt tank, a control valve and the control valve fitting, wherein the first port is connected with the control valve, and the second port is connected with the salt tank. The control valve accessory can be externally connected with the control valve, so that the structure of the control valve is simplified, and the control valve is easy to maintain and produce. The water softener uses an external control valve fitting, so that the overall manufacturing cost is reduced.
Description
Technical Field
The invention relates to a control valve fitting and a water softener comprising the same.
Background
At present, most of household water softeners in the market use automatic multi-way control valves, which can automatically control each regeneration process, including the process of absorbing saturated brine from a brine tank and regenerating resin by utilizing a built-in ejector to form negative pressure; the built-in salt valve can be opened to fill water into the salt tank before or after regeneration, so that salt particles are dissolved to form saturated brine for the next regeneration, and the water filling process is adopted; the water injection quantity is required to be quantitatively controlled, so that the purpose of accurately controlling the salt consumption is achieved.
The built-in salt valve of the control valve is small in caliber, is generally a three-way pipe, has small use flux, is generally independently designed outside the whole main control regeneration waterway, is opened only when salt is absorbed and water is injected, and is required to be closed in operation, backwashing, forward washing and the like. Taking a piston valve as an example, a salt valve piston is needed in addition to the main piston, which increases the difficulty and cost of controlling the transmission linkage and also presents an additional quality risk.
Some water softeners are provided with a float liquid level control valve in a salt tank, so that the water injection quantity can be controlled during water injection, and the water softener is automatically closed after reaching the liquid level, so that a built-in salt valve in the control valve is not needed, and waste is caused. However, although simple and cheap, this solution is not very popular because the control valve computer cannot precisely control the matching of salt consumption and actual water consumption.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a control valve fitting and a water softener comprising the same.
The invention solves the technical problems by the following technical scheme:
a control valve fitting, comprising: the device comprises a body, a regulating valve and a check valve, wherein the regulating valve and the check valve are arranged in the body;
The body is provided with a first port, a second port, a first fluid channel and a second fluid channel, and the first fluid channel and the second fluid channel are communicated between the first port and the second port;
The check valve is arranged in the first fluid channel and used for preventing fluid in the first fluid channel from flowing from the first port to the second port;
The regulating valve is provided in the second fluid passage and is used for regulating the total amount of fluid flowing through the second fluid passage.
Preferably, the regulating valve is a solenoid valve.
Preferably, the check valve comprises a squirrel cage grating and check balls arranged in the squirrel cage grating, the squirrel cage grating is covered on a first valve seat in the first fluid channel, and the check balls can be abutted against the first valve seat under fluid pressure.
Preferably, a flow limiting device is further arranged in the first port, and the flow limiting device is used for enabling the flow rate of the fluid flowing into the first port to be constant.
In the scheme, by arranging the flow limiting device, the water injection quantity can be controlled by controlling the opening and closing time of the electromagnetic valve, and the mode is simple and easy to implement.
Preferably, the flow limiting device comprises a flow limiting piece and a flow limiting support, the flow limiting support is of a squirrel cage structure and is covered on a second valve seat in the first port, and the flow limiting piece is arranged in the flow limiting support and can move in the flow limiting support to be abutted against or separated from the second valve seat.
Preferably, the flow limiting piece is an elastic wafer provided with a central hole.
Preferably, the second port is provided with a hose quick-insertion structure, the hose quick-insertion structure comprises a sealing ring, a pressing cap and a top ring, the pressing cap is fixed on the inner side of the second port, the top ring is inserted into the pressing cap, and the sealing ring is arranged on one side, far away from the opening of the second port, of the top ring.
Preferably, a first chamber and a second chamber are arranged in the body, the first chamber and the second chamber are communicated with each other through a first opening and a second opening, the first opening is communicated with the first chamber, the second opening is communicated with the second chamber, the regulating valve is used for opening and closing the first opening, and the check valve is used for opening and closing the second opening;
the first fluid channel is a channel from the second port to the first port via the second chamber, the second opening, the first chamber, and the second fluid channel is a channel from the first port to the second port via the first chamber, the first opening, and the second chamber.
Preferably, the body includes a first port portion provided with the first port, a second port portion provided with the second port, a check valve mounting portion provided with the check valve, a regulating valve mounting portion provided with the regulating valve, the second port portion is provided on an opposite side of the regulating valve mounting portion, the check valve mounting portion is connected to a position between the second port portion and the regulating valve mounting portion, and the first port portion is perpendicular to the first port portion.
A water softener comprising a salt tank, a control valve and a control valve fitting as described above, the first port being connected to the control valve and the second port being connected to the salt tank.
The invention has the positive progress effects that: the control valve accessory can be externally connected with the control valve, so that the structure of the control valve is simplified, and the control valve is easy to maintain and produce. The water softener uses an external control valve fitting, so that the overall manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic view of the internal fluid passages of a control valve fitting in a saline condition according to one embodiment of the invention.
FIG. 2 is a schematic view of the internal fluid passages of a control valve fitting in a water filled condition according to one embodiment of the present invention.
Fig. 3 is a schematic perspective view of a control valve fitting according to an embodiment of the present invention.
Fig. 4 is a schematic side view of a control valve fitting according to one embodiment of the present invention.
Fig. 5 is a schematic cross-sectional structure of the control valve fitting taken along line A-A in fig. 4.
Fig. 6 is a schematic cross-sectional structure of the control valve fitting taken along line B-B in fig. 4.
Reference numerals illustrate:
control valve fitting 100
Body 101
First port 111
Second port 112
First fluid passage 121
Second fluid passage 122
First chamber 131
Second chamber 132
First opening 141
Second opening 142
First port portion 151
Second port portion 152
Check valve mounting portion 153
Regulator valve mounting portion 154
Gland 155
Regulating valve 160
Check valve 170
Cage grid 171
Check ball 172
First valve seat 181
Second valve seat 182
Flow-limiting sheet 185
Current limiting bracket 186
Hose quick-insertion structure 190
Sealing ring 191
Pressure cap 192
Top ring 193
Detailed Description
The invention will be further illustrated by way of example with reference to the accompanying drawings, without thereby limiting the scope of the invention to the examples described below.
The control valve assembly 100 of the present embodiment is used for a control valve (not shown) of a water softener and for assisting the control valve in performing a salt water sucking and filling operation.
As shown in fig. 1-2, the control valve assembly 100 includes: the device comprises a body 101, a regulating valve 160 and a check valve 170 which are arranged in the body 101.
The body 101 is provided with a first port 111, a second port 112, a first fluid passage 121 and a second fluid passage 122, both the first fluid passage 121 and the second fluid passage 122 being in communication between the first port 111 and the second port 112.
A check valve 170 is disposed in the first fluid passage 121 and is configured to prevent fluid in the first fluid passage 121 from flowing from the first port 111 to the second port 112.
A regulator valve 160 is disposed in the second fluid passage 122 and is used to regulate the total amount of fluid flowing through the second fluid passage 122.
Fig. 1 shows a first fluid channel 121 with reference to arrows, and fig. 2 shows a second fluid channel 122 with reference to arrows.
The body 101 is internally provided with a first chamber 131 and a second chamber 132, the first chamber 131 and the second chamber 132 are mutually communicated through a first opening 141 and a second opening 142, the first port 111 is communicated with the first chamber 131, the second port 112 is communicated with the second chamber 132, the regulating valve 160 is used for opening and closing the first opening 141, and the check valve 170 is used for opening and closing the second opening 142.
The first fluid passage 121 is a passage from the second port 112 to the first port 111 through the second chamber 132, the second opening 142, and the first chamber 131 in this order, and the second fluid passage 122 is a passage from the first port 111 to the second port 112 through the first chamber 131, the first opening 141, and the second chamber 132 in this order.
Referring to fig. 1, when the control valve is inhaling salt, fluid flows through the first fluid passage 121. The regulator valve 160 is closed and the negative pressure at the first port 111 causes the check valve 170 to open, ensuring that the brine in the brine tank enters the first port 111 through the second port 112 and then enters the control valve to regenerate the resin.
Referring to fig. 2, when the control valve is filled, fluid flows through the second fluid passage 122. The positive pressure at the first port 111 closes the check valve 170, and the water injection amount into the salt tank can be controlled by normally opening and closing the regulating valve 160.
The regulator valve 160 is preferably a solenoid valve. Specifically, a diaphragm solenoid valve which drives a diaphragm to open and close by self pressure and which is controlled by a solenoid pilot is provided.
As shown in fig. 3-6, the check valve 170 includes a cage grid 171 and check balls 172 disposed inside the cage grid 171, wherein the cage grid 171 is covered on a first valve seat 181 in the first fluid channel 121, and the check balls 172 can abut against the first valve seat 181 under fluid pressure. The non-return valve 170 may be arranged horizontally or vertically, but may not be inverted, i.e. it may not be provided that the cage grid 171 is below the first valve seat 181, since then the non-return valve 170 will not normally perform its non-return function.
In the present embodiment, the check valve adopts a matching structure of the cage grating and the check ball, but the present invention is not limited thereto, and one skilled in the art may select other structures as needed to realize the check valve.
A flow restriction device is also provided in the first port 111 for keeping the flow of fluid flowing into the first port 111 constant. Through setting up current limiter, can control the water injection water yield through the opening time control solenoid valve, this mode is simple easy, moreover can calculate the water injection yield comparatively accurately.
In this embodiment, the current limiting device includes a current limiting plate 185 and a current limiting bracket 186, the current limiting bracket 186 is in a squirrel cage structure and covers the second valve seat 182 in the first port 111, and the current limiting plate 185 is disposed in the current limiting bracket 186 and can move in the current limiting bracket 186 to abut against or separate from the second valve seat 182. The restrictor 185 is a flexible disc with a central hole.
When the control valve is filled with water, the fluid flows in from the first port 111, the pressure applied to the flow limiting piece 185 makes the flow limiting piece 185 move towards the second valve seat 182 and abut against the second valve seat 182, so that the fluid can only pass through the central hole, the flow flowing into the first port 111 is constant under the flow limiting effect of the flow limiting piece 185, and the water injection amount of the salt tank can be accurately controlled by controlling the opening time of the regulating valve 160.
Of course, other means for achieving a defined constant flow rate may be selected by those skilled in the art.
The second port 112 is provided with a hose quick-insertion structure 190, the hose quick-insertion structure 190 comprises a sealing ring 191, a pressing cap 192 and a top ring 193, the pressing cap 192 is fixed on the inner side of the second port 112, the top ring 193 is inserted into the pressing cap 192, and the sealing ring 191 is arranged on one side, far away from the opening of the second port 112, of the top ring 193.
As shown in fig. 6, the body 101 includes a first port portion 151 provided with a first port 111, a second port portion 152 provided with a second port 112, a check valve mounting portion 153 provided with a check valve 170, and a regulator valve mounting portion 154 provided with a regulator valve 160, the second port portion 152 being provided on the opposite side of the regulator valve mounting portion 154, the check valve mounting portion 153 being connected to a position between the second port portion 152 and the regulator valve mounting portion 154, the first port portion 151 being provided perpendicularly to the first port portion 151. By this arrangement, the control valve fitting 100 is made more compact and simpler to assemble.
The present embodiment provides only one preferable structure of the body, but the present invention is not limited thereto, and a person skilled in the art may arbitrarily set the relative positional relationship of the first port portion, the second port portion, the check valve mounting portion, and the regulator valve mounting portion as required.
The body 101 may be integrally injection molded. The regulator valve 160 is fixed to the regulator valve mounting portion 154 of the body 101 by a fastening structure such as a screw. The check valve 170 fixes the check valve 170 to the check valve mounting portion 153 of the body 101 by the gland 155 with a seal ring. Alternatively, the body may be a split structure.
The control valve fitting 100 can be externally connected to a control valve, simplifying the structure of the control valve and facilitating maintenance and production.
The embodiment also provides a water softener. The water softener includes a salt tank, a control valve, and the control valve fitting 100 as described above, with a first port 111 connected to the control valve and a second port 112 connected to the salt tank.
The water softener uses an external control valve fitting 100, reducing overall manufacturing costs.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention unless otherwise indicated herein.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (8)
1. A control valve assembly, comprising: the device comprises a body, a regulating valve and a check valve, wherein the regulating valve and the check valve are arranged in the body;
The body is provided with a first port, a second port, a first fluid channel and a second fluid channel, and the first fluid channel and the second fluid channel are communicated between the first port and the second port;
The check valve is arranged in the first fluid channel and used for preventing fluid in the first fluid channel from flowing from the first port to the second port;
the regulating valve is arranged in the second fluid channel and is used for regulating the total amount of fluid flowing through the second fluid channel;
the body is internally provided with a first chamber and a second chamber, the first chamber and the second chamber are mutually communicated through a first opening and a second opening, the first port is communicated with the first chamber, the second port is communicated with the second chamber, the regulating valve is used for opening and closing the first opening, and the check valve is used for opening and closing the second opening;
The first fluid channel is a channel from the second port to the first port via the second chamber, the second opening, the first chamber, the second fluid channel is a channel from the first port to the second port via the first chamber, the first opening, the second chamber;
the body is including being equipped with first port portion of first port, be equipped with the second port portion of second port, be equipped with check valve mounting portion of check valve, be equipped with the governing valve mounting portion of governing valve, second port portion locates the opposite side of governing valve mounting portion, check valve mounting portion connect in the second port portion with the position between the governing valve mounting portion, first port portion perpendicular to first port portion sets up.
2. The control valve assembly of claim 1, wherein the check valve comprises a cage grid and a check ball disposed within the cage grid, the cage grid being covered on a first valve seat within the first fluid passage, the check ball being capable of abutting the first valve seat under fluid pressure.
3. The control valve fitting of claim 1, wherein the second port is provided with a hose quick-connect structure comprising a sealing ring, a press cap, and a top ring, the press cap being secured to an inner side of the second port, the top ring being inserted into an interior of the press cap, the sealing ring being disposed on a side of the top ring remote from an opening of the second port.
4. The control valve assembly of claim 1, wherein the regulator valve is a solenoid valve.
5. The control valve assembly of claim 4, wherein a flow restricting device is further provided in the first port for maintaining a constant flow of fluid into the first port.
6. The control valve assembly of claim 5, wherein the flow restricting device comprises a flow restricting disc and a flow restricting bracket, the flow restricting bracket is of a squirrel cage structure and covers a second valve seat in the first port, and the flow restricting disc is arranged in the flow restricting bracket and can move in the flow restricting bracket to abut or be separated from the second valve seat.
7. The control valve assembly of claim 6, wherein the restrictor plate is a resilient disc having a central aperture.
8. A water softener comprising a salt tank, a control valve and the control valve fitting of any one of claims 1-7, the first port being connected to the control valve and the second port being connected to the salt tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399029.4A CN110440037B (en) | 2019-05-14 | 2019-05-14 | Control valve accessory and water softener comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399029.4A CN110440037B (en) | 2019-05-14 | 2019-05-14 | Control valve accessory and water softener comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110440037A CN110440037A (en) | 2019-11-12 |
| CN110440037B true CN110440037B (en) | 2024-05-10 |
Family
ID=68428784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910399029.4A Active CN110440037B (en) | 2019-05-14 | 2019-05-14 | Control valve accessory and water softener comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110440037B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201936A (en) * | 2022-11-03 | 2023-06-02 | 开能健康科技集团股份有限公司 | Ultra-low flow restrictor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100745486B1 (en) * | 2006-11-20 | 2007-08-03 | 윤만실 | Constant flow control valve having a multi-function |
| KR101019723B1 (en) * | 2010-06-14 | 2011-03-07 | 김남용 | Flow adjusting valve |
| CN103899805A (en) * | 2014-04-23 | 2014-07-02 | 刘工勤 | Micro-force switch valve with backflow stopping function |
| CN103925392A (en) * | 2014-05-05 | 2014-07-16 | 上海开能环保设备股份有限公司 | Water treatment control valve |
| CN108350909A (en) * | 2015-10-28 | 2018-07-31 | Smc株式会社 | Control valve for fluids |
| CN109592799A (en) * | 2019-01-24 | 2019-04-09 | 开能健康科技集团股份有限公司 | Multi-way valve and water softening device containing it |
| CN209876056U (en) * | 2019-05-14 | 2019-12-31 | 开能健康科技集团股份有限公司 | Control valve accessory and water softener comprising same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8671985B2 (en) * | 2011-10-27 | 2014-03-18 | Pentair Residential Filtration, Llc | Control valve assembly |
-
2019
- 2019-05-14 CN CN201910399029.4A patent/CN110440037B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100745486B1 (en) * | 2006-11-20 | 2007-08-03 | 윤만실 | Constant flow control valve having a multi-function |
| KR101019723B1 (en) * | 2010-06-14 | 2011-03-07 | 김남용 | Flow adjusting valve |
| CN103899805A (en) * | 2014-04-23 | 2014-07-02 | 刘工勤 | Micro-force switch valve with backflow stopping function |
| CN103925392A (en) * | 2014-05-05 | 2014-07-16 | 上海开能环保设备股份有限公司 | Water treatment control valve |
| CN108350909A (en) * | 2015-10-28 | 2018-07-31 | Smc株式会社 | Control valve for fluids |
| CN109592799A (en) * | 2019-01-24 | 2019-04-09 | 开能健康科技集团股份有限公司 | Multi-way valve and water softening device containing it |
| CN209876056U (en) * | 2019-05-14 | 2019-12-31 | 开能健康科技集团股份有限公司 | Control valve accessory and water softener comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110440037A (en) | 2019-11-12 |
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