CN203770761U - Anti-siphon water distributor - Google Patents
Anti-siphon water distributor Download PDFInfo
- Publication number
- CN203770761U CN203770761U CN201420129520.8U CN201420129520U CN203770761U CN 203770761 U CN203770761 U CN 203770761U CN 201420129520 U CN201420129520 U CN 201420129520U CN 203770761 U CN203770761 U CN 203770761U
- Authority
- CN
- China
- Prior art keywords
- water
- lifting rod
- main body
- cavity
- siphon
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000009827 uniform distribution Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 210000003660 reticulum Anatomy 0.000 description 7
- 238000003287 bathing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Bathtubs, Showers, And Their Attachments (AREA)
Abstract
The utility model discloses an anti-siphon water distributor and belongs to water distributor structures applied to the technical field of water nozzles. The anti-siphon water distributor comprises a body, a connector, a lifting rod, a reset spring, a shaft seal ring, a check valve and the like. The anti-siphon water distributor is characterized in that the lifting rod is provided with the automatic reset spring and a lifting rotary limiting structure. By the lifting rod, automatic reset of a bathtub position can be achieved when water inlet pressure is normal, and the water distributor can be switched to a shower position for a normal shower by manually lifting the rotary limiting structure of the lifting rod when the water inlet pressure is low. The anti-siphon water distributor has a water using switching function between the shower position and the bathtub position which the traditional water distributor has. In addition, the check valve is added in the connector, so that the problem of water inlet source pollution caused by sewage flowing back due to siphon effect can be avoided effectively. The modified anti-siphon water distributor is compact and reasonable in structural design, reliable in sealing during opening and closing, convenient to mount and maintain, and the like.
Description
Technical field
The utility model relates to a kind of water knockout drum of water supply system water nozzle, refers in particular to the anti-siphon water knockout drum in water supply system Water tap for bathtub, tub/shower water nozzle.
Background technique
At present, realizing mutual conversion between bathtub position and shower position is mainly realize manually point water or automatically divide water by being arranged on water knockout drum in Water tap for bathtub.And tend to, because forgetting after shower, water knockout drum is reset to bathtub position for the water knockout drum of hand reset, in the time again opening Water tap for bathtub, cold water will directly be sprayed onto the bathing person from the shower flower sprayer of shower position, causes discomfort; And automatically reset water knockout drum also there will be the active force that is not enough to overcome Returnning spring because hydraulic pressure is too low, thus the phenomenon that causes being transformed into shower position and carry out shower.Simultaneously, along with industry new standard QB/T1334-2013 " water nozzle general technical specifications " issuing and implementation with by the standard GB/T 18145 " ceramic cartridge faucet " of issuing and implementing, new standard has all increased the anti-backflow performance requirement to water faucet compared with primary standard, it is mainly that extraction-type water nozzle and the water nozzle with spray gun are all required to possess anti-backflow function, the siphonage that do not have produces, in order to avoid used sewage pollutes feed source because siphonage refluxes.Hand-held shower flower sprayer in known Water tap for bathtub, tub/shower water nozzle mainly divides water by water knockout drum, and the general constructional device that does not all prevent sewage backflow in these water knockout drums, in the time that water knockout drum is changed in shower position, if shower flower sprayer is fallen into bathtub or is placed on the place of bath sewage, because will causing sewage backflow, siphonage causes the pollution of feed source.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and not enough and provide a kind of and can implement under normal circumstances automatically reseting of bathtub position and implement the anti-siphon water knockout drum of the mutual conversion between bathtub position and shower position in the lower situation of intake pressure at intake pressure, this anti-siphon water knockout drum can also effectively prevent because siphonage causes sewage backflow and pollutes the problem of feed source, and structural design compact and reasonable, Open-close sealing are reliable, easy to installation and maintenance.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of anti-siphon water knockout drum, comprises that sealing is arranged on the main body and the connecting head that is sealedly connected on main body lower end in Water tap for bathtub; Described main body is provided with water-inlet cavity and water chamber outward, is provided with point water cavity being communicated with into and out of water cavity in main body, is also provided with and does upper and lower motion and rotate the lifting rod of installing; Described connecting head lower end is provided with the shower hose being tightly connected, and is provided with the check cavity that is communicated with water-inlet cavity in connecting head; Described lifting rod upper end is stretched out main body and is exposed, and middle part is provided with movable water-inlet cavity and the seal ring that divides water cavity, water-inlet cavity and check cavity of opening and closing, and this lifting rod is set with pushing tow lifting rod outward and makes the Returnning spring moving downward, and described lifting rod lower end is provided with limit rib; Described connecting head top is provided with the annular steps with endoporus, on the inner peripheral wall of endoporus, is provided with gap slot; Described limit rib is subject to the rotation of lifting rod and upper and lower motion and forms overlapping and depart from or form position deviation and form moving downward of lifting rod spacing with gap slot in gap slot with gap slot.
Described limit rib is a rectangle rib, and the width of this limit rib is less than the width of gap slot.
Described lifting rod middle part is provided with frustum, and the outer peripheral surface of this frustum is provided with installation annular groove, and described seal ring is inlaid in this installation annular groove, and the outer peripheral surface of sealing circle is made as conical surface.
A described point water cavity inner top surface is provided with shaft seal circle, and described lifting rod upper end is stretched out main body through shaft seal circle and exposed; Described Returnning spring upper end pushing installation is in the end face annular groove of shaft seal circle lower end surface, and Returnning spring lower end pushing tow is on the conical surface of frustum.
In described connecting head, safety check is installed, this safety check comprises the valve body being sealedly connected in connecting head, in valve body, be provided with the valve pocket that is communicated with check cavity, the flap and the pushing tow flap that are also provided with upper and lower motion keying check cavity and valve pocket are made the Compress Spring moving upward; Described valve body lower end is provided with bonnet, and this bonnet is provided with the water port of multiple connection valve pockets.
Described flap lower end is provided with the guide rod to downward-extension, the corresponding pilot hole of making activity-oriented for described guide rod that is provided with on bonnet; Described Compress Spring is sleeved on guide rod, and this Compress Spring upper end pushing installation is in the end face annular groove of flap lower end surface, and lower end pushing installation is on the cylinder boss of rear interior surface.
In described water-inlet cavity and water chamber, be equipped with arched ribs.
The upper end that the main body of stretching out described lifting rod exposes is provided with carrying handle.
Described connecting head inwall is provided with the triangular groove of six circumference uniform distributions.
The sealing installation structure of described main body in Water tap for bathtub is on the outer wall contacting with Water tap for bathtub in main body, to be provided with two pass "O"-ring, on the outer end face that main body contacts with Water tap for bathtub, is also provided with "O"-ring.
Compared with prior art, the utility model mainly effectively prevents that by set up safety check in the connecting head of water knockout drum shower position the sewage medium back flow causing because of siphonage from polluting feed source, lifting rod is designed to be with automatic-reset spring simultaneously and lifts rotation limiting structure, it can implement under normal circumstances at intake pressure the auto-reset function of bathtub position, after having avoided hand reset water knockout drum because of shower, forget water knockout drum is reset to bathtub position, in the time again opening Water tap for bathtub, cold water can be sprayed onto the bathing person and the discomfort causing from the shower flower sprayer of shower position, again can be in the lower situation of intake pressure spacingly make a point device be converted to shower position to carry out normal shower by what manually mention rotary pulling bar, anti-siphon water knockout drum after improvement also has structural design compact and reasonable, Open-close sealing is reliable, the advantage such as easy to installation and maintenance.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the stereogram of Fig. 1.
Fig. 4 is A-A sectional view of Fig. 1.
Fig. 5 is B-B sectional view of Fig. 4.
Fig. 6 is the F enlarged view of Fig. 5.
Fig. 7 is C-C sectional view of Fig. 4.
Fig. 8 is D-D sectional view of Fig. 4.
Fig. 9 is E-E sectional view of Fig. 4.
Figure 10 is that the utility model is installed to the structural representation in Water tap for bathtub.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Figure 10, 1. water-inlet cavity, 2. connecting head, 21. triangular grooves, 22. gap slots, 23. endoporus, 24. check cavity, 25. annular steps, 3. water chamber, 4. main body, 41. points of water cavities, 5. lifting rod, 51. frustums, 52. limit ribs, 6. carrying handle, 7. seal ring, 8. Returnning spring, 9. safety check, 91. flaps, 92. valve bodies, 921. valve pocket, 93. Compress Springs, 94. guide rods, 95. bonnets, 951. cylinder boss, 952. pilot hole, 10. end face annular groove, 11. shaft seal circles, 12. "O"-rings, 13. arched ribs, 14. Water tap for bathtub, 15. water intakes, 16. shower hoses, 17. shower flower sprayers, 18. water outlets.
Anti-siphon water knockout drum, as Fig. 1 ~ Fig. 4, shown in Figure 10, it is a kind of Water tap for bathtub 14 that water supply system is installed that is mainly used in, in tub/shower water nozzle, carry out the device of conversion mutually as bathtub position and shower position, its structure is mainly by main body 4, connecting head 2, lifting rod 5, the formations such as Returnning spring 8 and safety check 9, these main body 4 sealings are arranged in the installation cavity of Water tap for bathtub 14, these connecting head 2 screw threads screw and are connected to main body 4 lower ends, "O"-ring formation is set between connecting head 2 and main body 4 and is connected sealing, connecting head 2 lower ends are sealedly connected with the shower hose 16 with shower flower sprayer 17.
Described main body 4 is from bottom to top to screw in the installation cavity that is arranged on Water tap for bathtub 14 by the outside thread of its underpart as shown in figure 10, on the outer wall contacting with Water tap for bathtub 14 in main body 4, be provided with setting-in to the "O"-ring in two pass water proof groove, on the outer end face contacting with Water tap for bathtub 14 in main body 4, be also provided with setting-in to the "O"-ring 12 in circle shape groove, thereby realize end face sealing and side seal while installation between main body 4 and Water tap for bathtub 14, avoided Water tap for bathtub 14 external leakages.
Outer water-inlet cavity 1 and the water chamber 3 of being provided with of described main body 4, should be outside water cavity be around in main body 4 in the form of a ring, at the arched ribs 13 being equipped with in water cavity as shown in Figure 8, Figure 9; Described water-inlet cavity 1 is connected with the water intake 15 of Water tap for bathtub 14, and water chamber 3 is connected with the water outlet 18 of Water tap for bathtub 14; In described main body 4, be provided with point water cavity 41 being communicated with into and out of water cavity, be also provided with lifting rod 5 simultaneously.
Described point water cavity 41 inner top surfaces are embedded with shaft seal circle 11, and the lower end surface of this shaft seal circle is provided with a circular end face annular groove 10; Expose through shaft seal circle 11 axial hole that stretches out in main body 4 described lifting rod 5 upper ends, and this upper end of exposing is through the screw thread carrying handle 6 of a toroidal that is tightened, thereby conveniently rotate and lift operation; Between described lifting rod 5 and the axial hole of main body 4, be Spielpassung, therefore lifting rod 5 can carry out upper and lower motion and rotation in main body 4, and can realize the motion sealing of lifting rod 5 by shaft seal circle 11.
Described lifting rod 5 middle parts are provided with a frustum 51, and the outer peripheral surface of this frustum is provided with installation annular groove, and the annular groove embedded seal ring 7 that is equipped with is being installed, and the outer peripheral surface of sealing circle can be made as conical surface, for improving the reliability of sealing; Described Returnning spring 8 is sleeved on the lifting rod 5 that is positioned at frustum 51 tops, and Returnning spring 8 upper end pushing installation are in the end face annular groove 10 of shaft seal circle 11 lower end surfaces, and Returnning spring 8 lower end pushing tows are on the conical surface of frustum 51.
Described lifting rod 5 lower ends are provided with limit rib 52 as shown in Figure 7, and this limit rib is a rectangle rib, and its disjunctor designs on the lower end surface of lifting rod 5.
In described connecting head 2, be provided with check cavity 24, this check cavity is connected with the water-inlet cavity 1 in main body 4; Connecting head 2 tops are provided with an annular steps 25 with endoporus 23, endoporus 23 centers of circle in this annular steps are with the shaft axis of lifting rod 5 position relationship that overlaps, and be provided with two and centered by the center of circle of endoporus, make symmetrical gap slot 22 on the inner peripheral wall of endoporus 23.
Described limit rib 52 is mainly to form motion with two gap slots 22 to coordinate, and limit rib 52 width need be less than the width of gap slot 22, in the time that limit rib 52 forms location overlap being subject to the rotation of lifting rod 5 with gap slot 22, only need mention lifting rod 5 can drive limit rib 52 to be upward through gap slot 22 to depart from or driven by lifting rod 5 and be upward through and depart from after gap slot 22, after only need again operating that lifting rod 5 rotates and deviating with the position of gap slot 22, can hinder moving downward of lifting rod 5, also just form moving downward of lifting rod spacing.
The below that is positioned at annular steps 25 on described connecting head 2 inwalls is also provided with six triangular grooves 21 of circumference uniform distribution as shown in Figure 5, the angle of each triangular groove is all illustrated in figure 6 120 °, the triangular groove 21 of six circumference uniform distributions has formed the structure of an interior hexagonal jointly, and its effect is facilitate hexagon head instrument to stretch into operation and more firm main body 4 screwing is connected in Water tap for bathtub 14.
Described safety check 9 is arranged on the bottom of connecting head 2, it is in the time that water knockout drum is transformed into shower position, once shower flower sprayer 17 is fallen into bathtub or is placed on the place of bath sewage, just can play and prevent that the sewage backflow causing because of siphonage from polluting the problem of feed source.
Described safety check 9 comprises by "O"-ring and from bottom to top seals the valve body 92 being arranged in connecting head 2, formation valve seat is inwardly tightened at this valve body top, in valve body 92, be provided with the valve pocket 921 that is communicated with check cavity 24, the flap 91 that upper and lower motion opens and closes check cavity 24 and valve pocket 921 is installed in valve pocket, this flap lower end surface is provided with a circular end face annular groove 10, and flap 91 lower ends are provided with the guide rod 94 to downward-extension; Described valve body 92 bottoms are provided with flap 91 are enclosed in to the bonnet 95 in valve pocket, this bonnet center is provided with the pilot hole 952 that is equipped with and forms guide rod activity-oriented with guide rod 94, be arranged with the water port 953 of four circumference uniform distributions outward at pilot hole, so that valve pocket 921 is connected with shower hose 16, on bonnet 95 internal surfaces, be also provided with cylinder boss 951; On described guide rod 94, be set with Compress Spring 93, this Compress Spring upper end pushing installation is in the end face annular groove 10 of flap 91 lower end surfaces, Compress Spring 93 lower end pushing installation are on the cylinder boss 951 of bonnet 95 internal surfaces, therefore can make flap 91 possess all the time the thrust moving upward under Compress Spring 93 effects, be flap by compression spring 93 pushing tow close contacts on valve seat, and being communicated with between check cavity 24 and valve pocket 921 closed.
The working state that the utility model possesses is: when Water tap for bathtub 14 is not opened, be subject to the elastic force pushing tow of Returnning spring 8 to make lifting rod 5 in moving downward state, now seal ring 7 is subject to the downward drive of lifting rod will open bathtub position and closes shower position, be that bathtub position is opened and makes water-inlet cavity 1, point water cavity 41 and water chamber 3 is all connected, shower position is closed water-inlet cavity 1 and check cavity 24 cannot be communicated with, Water tap for bathtub 14 open into just can be successively after water by water intake 15, water-inlet cavity 1, divide water cavity 41, water chamber 3 arrive water outlet 18 water outlets.
When Water tap for bathtub 14 intake pressures under normal circumstances, upwards mention lifting rod 5, the elastic force that overcomes Returnning spring 8 under intake pressure effect makes seal ring 7 open shower position and closes bathtub position, be that shower position is opened water-inlet cavity 1 and check cavity 24 are connected, bathtub position is closed water-inlet cavity 1 and a point water cavity 41 cannot be communicated with, water inlet in Water tap for bathtub 14 just can be passed through water intake 15 successively, water-inlet cavity 1, check cavity 24, valve pocket 921, shower hose 16 arrives shower flower sprayer 17 water outlets, finish to close after Water tap for bathtub 14 in shower, lifting rod 5 is with dynamic seal ring 7 to move downward to be reset to that bathtub position reopens and normal water outlet under Returnning spring 8 effect, shower position is closed again, thereby while having avoided again opening Water tap for bathtub, cold water is sprayed onto the bathing person and causes discomfort phenomenon from shower flower sprayer 17, this working state also will ensure that the limit rib 52 of lifting rod 5 lower ends must be with gap slot 22 in bedded position relation.
When Water tap for bathtub 14 intake pressures are compared with low when being not enough to overcome the elastic force of Returnning spring 8 and cannot being transformed into shower position and carrying out shower, only lifting rod 5 need be rotated and drive limit rib 52 and gap slot 22 in bedded position relation, then upwards mentioning lifting rod 5 drives limit rib 52 to turn an angle through after gap slot 22 again, and till lifting rod 5 lower end surfaces are stopped by annular steps 25 upper surfaces, seal ring 7 now just can be opened shower position and close bathtub position, thereby carries out normal shower; And after shower finishes, only need rotation lifting rod 5 to make limit rib 52 be passed down through gap slot 22 and be again reset to the water outlet of bathtub position.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (10)
1. an anti-siphon water knockout drum, comprises and seals the connecting head (2) that is arranged on the main body (4) in Water tap for bathtub (14) and is sealedly connected on main body (4) lower end; Described main body (4) is outer is provided with water-inlet cavity (1) and water chamber (3), is provided with point water cavity (41) being communicated with into and out of water cavity in main body (4), is also provided with and does upper and lower motion and rotate the lifting rod (5) of installing; Described connecting head (2) lower end is provided with the shower hose (16) being tightly connected, and is provided with the check cavity (24) that is communicated with water-inlet cavity (1) in connecting head (2); Described lifting rod (5) upper end is stretched out main body (4) and is exposed, middle part is provided with the movable seal ring (7) that opens and closes water-inlet cavity (1) and a point water cavity (41), water-inlet cavity (1) and check cavity (24), outside this lifting rod (5), be set with pushing tow lifting rod and make the Returnning spring (8) moving downward, it is characterized in that described lifting rod (5) lower end is provided with limit rib (52); Described connecting head (2) top is provided with the annular steps (25) of band endoporus (23), is provided with gap slot (22) on the inner peripheral wall of endoporus; Described limit rib (52) is subject to the rotation of lifting rod (5) and upper and lower motion and forms overlapping and depart from or form position deviation and form moving downward of lifting rod (5) spacing with gap slot in gap slot with gap slot (22).
2. anti-siphon water knockout drum according to claim 1, is characterized in that described limit rib (52) is a rectangle rib, and the width of this limit rib (52) is less than the width of gap slot (22).
3. anti-siphon water knockout drum according to claim 1, it is characterized in that described lifting rod (5) middle part is provided with frustum (51), the outer peripheral surface of this frustum is provided with installation annular groove, described seal ring (7) is inlaid in this installation annular groove, and the outer peripheral surface of sealing circle (7) is made as conical surface.
4. according to the anti-siphon water knockout drum described in claim 1 or 3, it is characterized in that described point water cavity (41) inner top surface is provided with shaft seal circle (11), described lifting rod (5) upper end is stretched out main body (4) through shaft seal circle (11) and is exposed; Described Returnning spring (8) upper end pushing installation is in the end face annular groove (10) of shaft seal circle (11) lower end surface, and Returnning spring (8) lower end pushing tow is on the conical surface of frustum (51).
5. anti-siphon water knockout drum according to claim 1, it is characterized in that, in described connecting head (2), safety check (9) is installed, this safety check comprises the valve body (92) being sealedly connected in connecting head (2), in valve body, be provided with the valve pocket (921) that is communicated with check cavity (24), be also provided with upper and lower motion keying check cavity (24) and make with flap (91) and the pushing tow flap of valve pocket (921) Compress Spring (93) moving upward; Described valve body (92) lower end is provided with bonnet (95), and this bonnet is provided with the water port (953) of multiple connection valve pockets (921).
6. anti-siphon water knockout drum according to claim 5, is characterized in that described flap (91) lower end is provided with the guide rod (94) to downward-extension, the corresponding pilot hole (952) of making activity-oriented for described guide rod that is provided with on bonnet (95); It is upper that described Compress Spring (93) is sleeved on guide rod (94), and this Compress Spring upper end pushing installation is in the end face annular groove (10) of flap (91) lower end surface, and lower end pushing installation is on the cylinder boss (951) of bonnet (95) internal surface.
7. anti-siphon water knockout drum according to claim 1, is characterized in that being equipped with arched ribs (13) in described water-inlet cavity (1) and water chamber (3).
8. anti-siphon water knockout drum according to claim 1, is characterized in that described lifting rod (5) stretches out the upper end that main body (4) exposes carrying handle (6) is installed.
9. anti-siphon water knockout drum according to claim 1, is characterized in that described connecting head (2) inwall is provided with the triangular groove (21) of six circumference uniform distributions.
10. anti-siphon water knockout drum according to claim 1, it is characterized in that the sealing installation structure of described main body (4) in Water tap for bathtub (14) is to be provided with two pass "O"-ring on the outer wall contacting with Water tap for bathtub (14) in main body (4), on the outer end face that main body (4) contacts with Water tap for bathtub (14), be also provided with "O"-ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420129520.8U CN203770761U (en) | 2014-03-21 | 2014-03-21 | Anti-siphon water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420129520.8U CN203770761U (en) | 2014-03-21 | 2014-03-21 | Anti-siphon water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770761U true CN203770761U (en) | 2014-08-13 |
Family
ID=51287952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420129520.8U Expired - Lifetime CN203770761U (en) | 2014-03-21 | 2014-03-21 | Anti-siphon water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422929A (en) * | 2015-12-17 | 2016-03-23 | 苏州美达斯机电有限公司 | Simple manual control structure for one-way valve |
| CN106122542A (en) * | 2016-08-16 | 2016-11-16 | 苏州美达斯机电有限公司 | Simple one-way valve manual control structure |
-
2014
- 2014-03-21 CN CN201420129520.8U patent/CN203770761U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422929A (en) * | 2015-12-17 | 2016-03-23 | 苏州美达斯机电有限公司 | Simple manual control structure for one-way valve |
| CN105422929B (en) * | 2015-12-17 | 2017-10-20 | 苏州美达斯机电有限公司 | A kind of Simple one-way valve Manual control structure |
| CN106122542A (en) * | 2016-08-16 | 2016-11-16 | 苏州美达斯机电有限公司 | Simple one-way valve manual control structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |