CN203555598U - Anti-negative-pressure water outlet nozzle - Google Patents
Anti-negative-pressure water outlet nozzle Download PDFInfo
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- CN203555598U CN203555598U CN201320581192.0U CN201320581192U CN203555598U CN 203555598 U CN203555598 U CN 203555598U CN 201320581192 U CN201320581192 U CN 201320581192U CN 203555598 U CN203555598 U CN 203555598U
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- valve casing
- spring
- housing
- axial passage
- air inlet
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Abstract
The utility model relates to an anti-negative-pressure water outlet nozzle comprising a housing with an axial passage. The housing is provided with a water inlet and a water outlet. The anti-negative-pressure water outlet nozzle is characterized in that the housing is further provided with an air inlet communicated with the water outlet, a valve shell is disposed inside the axial passage, the rear of the valve shell is provided with a sealing element capable of sealing the air inlet, the valve shell is pushed to keep in the state of moving forward by a first spring inside the axial passage, a sealing ring is disposed between the outer periphery of the valve shell and the inner peripheral wall of the axial passage, the valve shell is provided with an inlet and an outlet, a plug is disposed inside the valve shell, the plug is pushed to keep in the state of sealing the inlet by a second spring inside the valve shell, and the force applied to the valve shell by the first spring is smaller than that applied to the plug by the second spring. After liquid passes the water outlet nozzle, no residual liquid remains inside; the nozzle is ventilated and is cleaner; when applied to a coffee maker, the nozzle allows the air inlet to be automatically sealed during coffee making, and thus air is prevented from entering coffee and affecting the effect of the coffee.
Description
Technical field
The utility model relates to a kind of faucet, relates in particular to a kind of anti-negative pressure faucet, and this faucet is suitable on coffee machine or similar drink-extracting equipment.
Background technology
Coffee machine is the one in beverage extraction plant, and its structure has generally comprised water pot, extraction parts, heating element heater and water pump etc.During use, the coffee pads that is equipped with coffee powder is placed in the extraction parts of coffee machine, again the water of heating is got to water pump in the chamber of placing coffee pads in coffee machine, flow of hot water is crossed the coffee powder in coffee pads, and Hot Coffee flows to cup from the exhalant canal of coffee machine.The patent that relates to beverage brewing device or coffee machine has a lot, but the mechanism of its fluid (coffee) is all identical, beverage directly flows out by a passage, when hot water is by after beverage pack, hydraulic pressure can lose, and goes out hydraulic coupling little, grease in coffee beverage is fineless and smooth, and grease layer is thick not, thick foam is more, therefore the mouthfeel of the beverage (coffee) flowing out from existing this liquid outlet mechanism is poor.
For aforementioned present situation, having a patent No. is the liquid outlet mechanism that the liquid outlet mechanism > > of the Chinese utility model patent < < beverage brewing device of ZL201120154501.7 (notification number is CN202060612U) has disclosed a kind of like this beverage brewing device, include and be communicated with extraction space and extraneous liquid outlet channel, it is characterized in that: in described liquid outlet channel, be provided with by spring and hold and the obstruction that keeps the trend that liquid outlet channel import is blocked.Beverage wants to flow out liquid outlet channel and must overcome the elastic force of spring, therefore improve the pressure of the beverage that flows out liquid outlet channel, the beverage of this larger pressure by after the bubble compression of greater particle size, form particle diameter at 30 microns to the bubble between 0.5 nanometer, therefore the final beverage flowing out does not have air pocket, this nano bubble can adsorb the grease part in beverage in addition, make small grease gradually polymerization become larger grease and be climbed to the water surface, better by the beverage mouthfeel of this liquid outlet mechanism.
This coffee machine faucet with counterbalance valve structure is in each use procedure, while going out coffee beverage at every turn, what it flowed out at first is one clear water, not coffee, through technical staff, analyze discovery, cause this one clear water is actual and in upper once use procedure, remain in the residual liquid in faucet for coffee machine, the easy breed bacteria of residual liquid, the reason of faucet residual liquid is because the inner sealing relatively of faucet, after machine (as coffee machine) quits work, due to the existence of ambient pressure, in faucet, there is negative pressure, cause a part of liquid not flow out.
Utility model content
Technical problem to be solved in the utility model be for above-mentioned prior art present situation, provide a kind of can be at the anti-negative pressure faucet of inner residual liquid, this faucet can allow liquid all flow out, and uses safety and sanitation more.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of anti-negative pressure faucet, comprise the housing with axial passage, and on housing, there is water inlet and delivery port; It is characterized in that: described housing also has the air inlet communicating with delivery port, in described axial passage, be provided with can before and after slippage there is the valve casing of valve pocket, the rear portion of valve casing be provided with can shutoff described in the seal of air inlet, this valve casing is held by the first spring that is positioned at axial passage and keeps reach to open described air inlet trend; Between the periphery of valve casing and the internal perisporium of axial passage, be provided with sealing ring and block described water inlet and be communicated with delivery port by the gap between valve casing and housing, on valve casing, there is the import being communicated with water inlet, and the outlet being communicated with delivery port, in described valve casing, be provided with obstruction, this obstruction is held by the second spring that is positioned at valve casing and keeps blocking described import trend; And the first spring action is less than the second spring action in the power of stopping up in the power of valve casing, thereby guarantees to move to after valve casing after shutoff air inlet, and described obstruction could be backed down by inlet hydraulic and be opened import.
Between the periphery of valve casing and the internal perisporium of axial passage, be provided with sealing ring and block described water inlet and delivery port and be communicated with valve casing is outside, on valve casing, there is the import being communicated with water inlet, and the outlet being communicated with delivery port, in described valve casing, be provided with obstruction, stop up by the second spring that is positioned at valve casing and hold and keep blocking described import trend; And the first spring action is less than the second spring action in the power of stopping up in the power of valve casing, after valve casing, moves to after shutoff air inlet, after described obstruction ability, moves and opens import.
On the periphery wall of above-mentioned valve casing, form multiple stoppers that arrange along the circle spacing, the front end of described the first spring is supported in described stopper, and the rear end of the first spring is supported on the rear inwall of axial passage.Stopper provides suitable support level not only to the first spring, and meanwhile, stopper interval arranges the ventilation being beneficial between air inlet and delivery port, guarantees that liquid all flows out faucet, noresidue.
The valve pocket internal thread of above-mentioned valve casing is connected with bolt, and the rear end of described the second spring is supported on bolt, and the front end of the second spring is supported in described obstruction.The setting of bolt provides suitable support level not only to the second spring, simultaneously, by rotating bolt, can finely tune the compression dynamics of the second spring, adjustable the second spring is to stopping up applied pressure, thereby air inlet is first closed in better assurance, after open import, guarantee the harmony of coffee, and the easy to operate and controllability of mechanism.
Above-mentioned seal is embedded at the rear portion of the valve pocket of valve casing, has the annular convex that can contact with described seal on the rear inwall of described axial passage, and described air inlet is positioned at described annular convex.Due to annular convex evagination, can better contact with seal and coordinate formation sealing.
Above-mentioned obstruction is steel ball.Steel ball is standard component, therefore adopt steel ball to have selection advantage easily as obstruction.
The head of above-mentioned obstruction be with the import of described valve casing match coniform, cone shape head can form excellent sealing with import, the rear end face center position of plunger has the columnar portion extending back.This obstruction is inserted in the second spring by columnar portion, can locate better the second spring.
Above-mentioned import is arranged on the front end face of valve casing, and described outlet has on two outer peripheral faces that are arranged on valve casing.The arrangement of this import and outlet is more reasonable.
Above-mentioned water inlet arranges on the front end face of housing, and the upper surface of the housing of water inlet periphery has the arcwall of outwardly convex, and the inwall of this arcwall has draw-in groove.This structure is convenient to faucet to be installed on the liquid outlet channel of coffee machine by the mode of buckle.
Compared with prior art, the utility model has the advantage of: when liquid flows into by the water inlet of housing, liquid increases gradually pressure and increases gradually, the elastic force that promotion valve casing overcomes the first spring moves backward, until the seal of valve casing rear end is blocked air inlet, now front end fluid inflow pressure continues to increase, and stops up after overcoming the pressure of the second spring and moves the import of opening valve casing, and beverage finally flows out from delivery port after via the import of valve casing, outlet; After liquid stops flowing into, the hydraulic pressure that acts on obstruction and valve casing reduces, because the first spring action is less than the second spring action in the power of stopping up in the power of valve casing, be blocked under the effect of the second spring and first reset and close the import of valve casing, thereafter under the elastic force effect of the first spring, whole valve casing moves forward, the air inlet open of housing, now has air to enter housing, and the inside of housing and valve casing just can not produce negative pressure appearance, now coffee does not just have delay, can all flow out; Therefore liquid is by inner noresidue liquid after this faucet, and ventilation, more health (have residual can breed bacteria); When this faucet is when the coffee machine, can make again when making coffee can automatic-sealed air inlet, and preventing that air from sneaking into affects coffee effect in coffee; The whole active procedure of counterbalance valve in faucet, by hydraulic power and the spring force of coffee machine itself, without manual operation, very simple and easy to do.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view one of the utility model embodiment;
Fig. 2 is the schematic perspective view two of the utility model embodiment;
Fig. 3 is the cutaway view (reset condition) of the utility model embodiment;
Fig. 4 is the cutaway view (duty) of the utility model embodiment;
Fig. 5 is the three-dimensional exploded view of the utility model embodiment;
Fig. 6 is the schematic perspective view of valve casing in the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1～6, it is a preferred embodiment of the present utility model.
A kind of anti-negative pressure faucet, comprises that inside has the housing 1 of axial passage 11, has water inlet 12 and delivery port 13 on housing 1, and the air inlet 14 communicating with delivery port 13.Water inlet 12 arranges on the front end face of housing 1, and delivery port 13 is arranged on the sidepiece of housing 1, and air inlet 14 is arranged on the rear end face of housing 1.The upper surface of the housing 1 of water inlet 12 peripheries has the arcwall 16 of outwardly convex, and the inwall of this arcwall 16 has draw-in groove 17.
In axial passage 11, be provided with can before and after slippage there is the valve casing 3 of valve pocket 31, gapped between the periphery of valve casing 3 and the inwall of axial passage 11, pass through with air for liquid.The rear portion of valve casing 3 be provided with can shutoff described in the seal 2 of air inlet 14, seal 2 can be the rubber parts of column, seal 2 is embedded the rear portion at the valve pocket 31 of valve casing, on the rear inwall of axial passage 11, there is the annular convex 15 that can contact with seal 2, air inlet 14 is positioned at annular convex 15, after valve casing 3, move under the state that annular convex 15 and seal 2 conflict, seal 2 blocks air inlet 14.
Valve casing 3 is held by the first spring 4 that is positioned at axial passage 11 and keeps reach to open air inlet 14 trend, on the periphery wall of valve casing 3, form multiple stoppers 34 that arrange along the circle spacing, the front end of the first spring 4 is supported in stopper 34, and the rear end of the first spring 4 is supported on the rear inwall of axial passage 11.
Between the internal perisporium of the periphery of valve casing 3 and axial passage 11, be provided with sealing ring 5 and blocking-up water inlet 12 by the gap between valve casing 3 and housing 1, be communicated with delivery port 13, sealing ring 5 is just set in the cannelure 35 of valve casing 3 peripheries, sealing ring 5 just can be with valve casing 3 front and back slippages like this, on valve casing 3, there is the import 32 being communicated with water inlet 12, and the outlet 33 being communicated with delivery port 13, water inlet 12 only have import 32 by valve casing 3 with after outlet 33 could and delivery port 13 be communicated with.
In valve casing 3, be provided with and stop up 6, this obstruction 6 is held by the second spring 7 that is positioned at valve casing and keeps blocking import 32 trend, the rear end that valve pocket 31 internal threads of valve casing 3 are connected with bolt 8, the second springs 7 is supported on bolt 8, and the front end of the second spring 7 is supported on and stops up on 6.And the power that the first spring 4 acts on valve casing 3 is less than the second spring 7 and acts on the power of stopping up 6, thereby guarantees to move to after valve casing 3 after shutoff air inlet 14, stop up 6 and could be backed down by inlet hydraulic and open import 32.That is to say when the liquid of certain pressure is from water inlet 12 flows into, first promote the resilient rear-moving that valve casing 3 overcomes the first spring 4, and the second spring 7 still props up to stop up and 6 blocks import 32, when moving to after valve casing 3 under the state that annular convex 15 and seal 2 conflict, valve casing 3 can not move afterwards again, and this is to continue logical highly pressurised liquid, along with increasing of liquid, pressure continues to increase, and just forces obstruction 6 resilient rear-movings that overcome the second spring 7 to open import 32.
The head of the obstruction 6 in the present embodiment be with the import 32 of described valve casing match coniform, the rear end face center position of plunger 6 has the columnar portion 61 extending back.
Operation principle and the process of this anti-negative pressure faucet are as follows:
As shown in Figure 1, 2, anti-negative pressure faucet is so that be used on coffee machine as example, when making coffee, coffee is when flowing into by the water inlet 12 of housing 1, coffee increases gradually pressure and increases gradually, the elastic force that promotion valve casing 3 overcomes the first spring 4 moves backward, until the seal 4 of valve casing 3 rear ends is blocked air inlet 14, now front end coffee feed pressure continues to increase, stop up 6 and move the import 32 of opening valve casing 3 after overcoming the pressure of the second spring 7, coffee via the import 32 of valve casing 3, outlet 33 is rear finally from delivery port 13, flows out; After coffee stops flowing into, the hydraulic pressure that acts on obstruction 6 and valve casing 3 reduces, the power that acts on valve casing 3 due to the first spring 4 is less than the second spring 7 and acts on the power of stopping up 6, stop up 6 first resets and closes the import 32 of valve casing 3 under the effect of the second spring 7, thereafter under the elastic force effect of the first spring 7, whole valve casing 3 moves forward, the air inlet 14 of housing 1 is opened, now there is air to enter the axial passage 11 of housing 1, the inside of housing 1 and valve casing 3 just can not produce negative pressure appearance, now coffee does not just have delay, can all flow out; Therefore coffee is by inner noresidue liquid after this faucet, and ventilation, more health (have residual can breed bacteria); When this faucet is when the coffee machine, can make again when making coffee can automatic-sealed air inlet, and preventing that air from sneaking into affects coffee effect in coffee; The whole active procedure of counterbalance valve in faucet, by hydraulic power and the spring force of coffee machine itself, without manual operation, very simple and easy to do.
Claims (8)
1. an anti-negative pressure faucet, comprises and the have axial passage housing (1) of (11) on housing (1), has water inlet (12) and delivery port (13), it is characterized in that: described housing (1) also has the air inlet (14) communicating with delivery port (13), in described axial passage (11), be provided with can before and after slippage there is the valve casing (3) of valve pocket (31), the rear portion of valve casing (3) be provided with can shutoff described in the seal (2) of air inlet (14), this valve casing (3) is held by the first spring (4) that is positioned at axial passage (11) and keeps reach to open described air inlet (14) trend, between the internal perisporium of the periphery of valve casing (3) and axial passage (11), be provided with sealing ring (5) and block described water inlet (12) and be communicated with delivery port (13) by the gap between valve casing (3) and housing (1), on valve casing (3), there is the import (32) being communicated with water inlet (12), and the outlet (33) being communicated with delivery port (13), in described valve casing (3), be provided with obstruction (6), this obstruction (6) is held by the second spring (7) that is positioned at valve casing and keeps blocking described import (32) trend, and the power that the first spring (4) acts on valve casing (3) is less than the second spring (7) and acts on the power of obstruction (6), thereby guarantee to move to after valve casing (3) after shutoff air inlet (14), described obstruction (6) could be backed down by inlet hydraulic and be opened import (32).
2. anti-negative pressure faucet according to claim 1, it is characterized in that: on the periphery wall of described valve casing (3), form multiple stoppers (34) that arrange along the circle spacing, it is upper that the front end of described the first spring (4) is supported on described stopper (34), and the rear end of the first spring (4) is supported on the rear inwall of axial passage (11).
3. anti-negative pressure faucet according to claim 1, it is characterized in that: valve pocket (31) internal thread of described valve casing (3) is connected with bolt (8), it is upper that the rear end of described the second spring (7) is supported on bolt (8), and the front end of the second spring (7) is supported in described obstruction (6).
4. anti-negative pressure faucet according to claim 3, it is characterized in that: described seal (2) is embedded the rear portion of the valve pocket (31) at valve casing, on the rear inwall of described axial passage (11), have the annular convex (15) that can contact with described seal (2), described air inlet (14) is positioned at described annular convex (15).
5. anti-negative pressure faucet according to claim 1, is characterized in that: described obstruction (6) is steel ball.
6. anti-negative pressure faucet according to claim 1, it is characterized in that: the head of described obstruction (6) be with the import (32) of described valve casing match coniform, the rear end face center position of plunger (6) has the columnar portion (61) extending back.
7. anti-negative pressure faucet according to claim 1, it is characterized in that: described import (32) is arranged on the front end face of valve casing (3), described outlet (33) has on two outer peripheral faces that are arranged on valve casing (3).
8. anti-negative pressure faucet according to claim 1, it is characterized in that: described water inlet (12) arranges on the front end face of housing (1), the upper surface of the housing (1) of water inlet (12) periphery has the arcwall (16) of outwardly convex, and the inwall of this arcwall (16) has draw-in groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581192.0U CN203555598U (en) | 2013-09-18 | 2013-09-18 | Anti-negative-pressure water outlet nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581192.0U CN203555598U (en) | 2013-09-18 | 2013-09-18 | Anti-negative-pressure water outlet nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203555598U true CN203555598U (en) | 2014-04-23 |
Family
ID=50505356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320581192.0U Withdrawn - After Issue CN203555598U (en) | 2013-09-18 | 2013-09-18 | Anti-negative-pressure water outlet nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203555598U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103479228A (en) * | 2013-09-18 | 2014-01-01 | 宁波全景电器技术有限公司 | Anti-negative-pressure water nozzle |
| CN105686724A (en) * | 2016-04-14 | 2016-06-22 | 厦门建霖工业有限公司 | Liquid retaining and liquid dropping preventing device for soap dispenser and working method of device |
| WO2020215623A1 (en) * | 2019-04-26 | 2020-10-29 | 青岛海尔电冰箱有限公司 | Water outlet mechanism and refrigerator having water outlet mechanism |
| CN114176400A (en) * | 2020-09-14 | 2022-03-15 | 宁波方太厨具有限公司 | Variable-pressure extraction device and coffee machine and tea extraction machine comprising same |
-
2013
- 2013-09-18 CN CN201320581192.0U patent/CN203555598U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103479228A (en) * | 2013-09-18 | 2014-01-01 | 宁波全景电器技术有限公司 | Anti-negative-pressure water nozzle |
| CN103479228B (en) * | 2013-09-18 | 2015-10-28 | 宁波全景电器技术有限公司 | Anti-negative pressure faucet |
| CN105686724A (en) * | 2016-04-14 | 2016-06-22 | 厦门建霖工业有限公司 | Liquid retaining and liquid dropping preventing device for soap dispenser and working method of device |
| WO2020215623A1 (en) * | 2019-04-26 | 2020-10-29 | 青岛海尔电冰箱有限公司 | Water outlet mechanism and refrigerator having water outlet mechanism |
| AU2019442261B2 (en) * | 2019-04-26 | 2022-12-15 | Haier Smart Home Co., Ltd. | Water outlet mechanism and refrigerator having water outlet mechanism |
| CN114176400A (en) * | 2020-09-14 | 2022-03-15 | 宁波方太厨具有限公司 | Variable-pressure extraction device and coffee machine and tea extraction machine comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |