CN2937705Y - Excess-flow valve - Google Patents
Excess-flow valve Download PDFInfo
- Publication number
- CN2937705Y CN2937705Y CN 200620017733 CN200620017733U CN2937705Y CN 2937705 Y CN2937705 Y CN 2937705Y CN 200620017733 CN200620017733 CN 200620017733 CN 200620017733 U CN200620017733 U CN 200620017733U CN 2937705 Y CN2937705 Y CN 2937705Y
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- Prior art keywords
- water
- connecting rod
- pressure limiting
- cutting
- valve
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- 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 - Fee Related
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Abstract
The utility model discloses a pressure limiting water-cutting off valve, including a shell, a water outlet and a water inlet which are arranged on the shell. A pressure limiting water-cutting off device is arranged between the water outlet and the water inlet; the basic structure of the invention is as follows: a connecting rod connected with a plugging piece can carry through a displacement along a channel; the plugging piece used to plug the water flow channel and can carry out a displacement follows the connecting rod, is arranged in a plugging cavity; an elastic piece used to support the connecting rod so as to help the plugging piece to keep the place which can ensure the water flow to be expedite when the water pressure is less than the scheduled water pressure. Thanks to the improved invention is adopted by the existing film-type pressure reducing valve body, therefore the utility model can realize the pressure limiting and the water cutting off when the water pressure arrives at the scheduled limit pressure so as to avoid the impact of hydraulic pressure caused by a disabled reducing valve, and therefore, the safety of the water pipe network and the terminal equipment can be improved finally.
Description
Technical field
The utility model relates to a kind of valve means, in particular a kind of pressure limiting in running water system valve of cutting off the water supply.
Background technique
In the water supply network of prior art, because water pressure fluctuations and tall building hydraulic pressure are too high, urbanite water consumption equipment often faces withstand voltage potential safety hazard, and for example when producing water hammer under the excessive situation of hydraulic pressure or in pipe network, water supply network and terminal watering equipment face the danger of rhegma.
In common counter-measure, reduction valve is the most general, as shown in Figure 1a, in the tap water pipe network system schematic, reduction valve can reduce higher hydraulic pressure, during for very high floor or landform, can adopt plural serial stage to carry out multi-step pressure reduction.The kind of reduction valve is more, and prior art is comparatively common, and diaphragm pressure sensing type reduction valve wherein is lower and most widely used because of its compact structure cost.But the membrane type reduction valve produces fault in following each side easily, therefore, must take technological means to be guaranteed to the security and stability of membrane type reduction valve:
1, housing explosion, this kind situation can be avoided by improving casing rigidity;
2, spring is cataclasm, and this kind situation must be improved by improving spring-mass, and this kind fault has determined the life-span of membrane type reduction valve simultaneously;
3, poorly sealed, this kind situation needs timely repair and replacement to have a strong impact on the work effect of membrane type reduction valve;
4, diaphragm cracking, the harm of this kind situation is maximum, and its function is thoroughly lost, and the hydraulic pressure impact is easy to generate water hammer.
From the analyses of Common failure of membrane type reduction valve, can find, the breaking-up consequence of reduction valve is that limit is serious, the bearing capacity that might cause the continuous accumulation overage pipeline of hydraulic pressure, finally cause other pressure of equipment on pipeline breaking or the pipeline excessive and cracked, as lauter tub of water meter, household water-purifying machine etc.
Therefore, prior art has yet to be improved and developed.
The model utility content
The purpose of this utility model is to provide a kind of pressure limiting valve of cutting off the water supply, by this valve body being set at the reduction valve front end, and the pressure limiting water-breaking structure in the valve body, can pressure limiting when reduction valve damages or cut off the water supply, realize safety protection to water supply network and terminal watering equipment.
The technical solution of the utility model comprises:
A kind of pressure limiting valve of cutting off the water supply, it comprises a shell, and water outlet that is provided with on shell and water inlet, wherein,
Between described water outlet and water inlet, be provided with the pressure limiting water-breaking structure; This pressure limiting water-breaking structure comprises substantially:
One connecting rod can form displacement along a passage, and be connected with a closeouts, and this closeouts is arranged in the shutoff chamber, but in company with the described water outlet of displacement shutoff of described connecting rod and the flow channel between the water inlet;
One elastic component is arranged between described connecting rod and the described shell, is used for when being lower than predetermined hydraulic pressure, supports described connecting rod and is in automatically and makes described closeouts keep the unimpeded position of described flow channel; And
When being higher than predetermined hydraulic pressure, described connecting rod remains on automatically and is in the position that makes the flow channel between described water outlet of described closeouts shutoff and the water inlet.
The described pressure limiting valve of cutting off the water supply wherein, also is provided with only complex structure between bar and the described shell repeatedly in institute, is used for when described connecting rod is in the flow channel position that makes between described water outlet of described closeouts shutoff and the water inlet maintenance sealed condition.
The described pressure limiting valve of cutting off the water supply, wherein, described end complex structure comprise one with the be connected bump of setting of the connecting rod of going back, and, an interlock that should bump be provided with is ended recess again, and this interlock ends again recess and is set to be the slightly steep wall again that ends in the shutoff direction of described connecting rod.
The described pressure limiting valve of cutting off the water supply, wherein, described bump is set to an elastic pawl, and its bottom is articulated on the pedestal, and this pedestal and described connecting rod are affixed; The shutoff direction of the described connecting rod of described pedestal is provided with stop part, is used to stop described elastic pawl.
The described pressure limiting valve of cutting off the water supply, wherein, the described complex structure of ending also comprises a pin-and-hole that is provided with on described connecting rod; And, to should pin-and-hole being arranged on the resilient pin on the described shell.
The described pressure limiting valve of cutting off the water supply, wherein, the described complex structure of ending comprises that also one is fastened on the shell fragment on the described shell, conflicts in the precalculated position of shutoff direction with described pull bar.
The described pressure limiting valve of cutting off the water supply, wherein, described position of conflicting with pull bar is set to a spring radial line of described elastic component.
The described pressure limiting valve of cutting off the water supply, wherein, the described complex structure of ending comprises an elastic cylinder, extends upward from described water intake, and is provided with claw portion; The described claw of correspondence portion is provided with snap ring in described closeouts lower end, is used for adaptive ending again.
The described pressure limiting valve of cutting off the water supply, wherein, the described complex structure of ending comprises a card teat that outwards is provided with from described closeouts downwards; And, extend upward from described water intake and to be provided with the collar portion that installs described card teat.
The described pressure limiting valve of cutting off the water supply, wherein, the described complex structure of ending comprises a card teat that outwards is provided with from described closeouts downwards; And, extending upward from described water intake and to be provided with the elastic cylinder chamber portion that installs described card teat, the top of this post chamber portion is provided with stop part.
A kind of pressure limiting provided by the utility model valve of cutting off the water supply, owing to adopt on existing membrane type reducing valve body and improve the pressure limiting water-breaking structure that is provided with, realize the pressure limiting when hydraulic pressure reaches predetermined value and cut off current, prevented that the hydraulic pressure when reduction valve damages from impacting, it is qualitative to have improved prolonging of pipe network, open and it improves simply, realization side makes, and cost is low.
Description of drawings
Fig. 1 a is the water supply pipe net system schematic representation of prior art;
Fig. 1 b is a water supply pipe net system schematic representation of the present utility model;
Fig. 2 to Fig. 8 is the sectional structure schematic representation of each preferred embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, will be described in more detail each preferred embodiment of the present utility model.
The utility model is for solving the defective of above-mentioned prior art, adopted the postposition valve scheme of cutting off the water supply, and promptly when common membrane type reduction valve breaks down, the pressure limiting water-breaking structure commenced work without delay, and the pressure-bearing safety of equipment behind the valve is guaranteed on the road that becomes to cut off the water supply.
Water supply pipe net system structural representation of the present utility model is shown in Fig. 1 b, from the hydraulic pressure of elevated pressures state when subordinate supplies water, can set gradually the membrane type reduction valve, and the pressure limiting valve of cutting off the water supply was set before the membrane type reduction valve, to prevent that this membrane type reduction valve from breaking down, during the state that for example can't reduce pressure, the described pressure limiting effect that valve in time plays pressure limiting and cuts off the water supply of cutting off the water supply.
Must notice that the described membrane type reduction valve and the valve of cutting off the water supply can adopt in the same valve body and be provided with, and add shown in following each preferred embodiment of the utility model, so can reduce cost.Yet; structure construction of the present utility model; when being arranged, also can work separately with membrane type reduction valve branch; the position that need not to reduce pressure for example; several valve arrangements of cutting off the water supply are set more, can guarantee the automatic shutoff when accident appears in pipeline, therefore; below diagram in each preferred embodiment only be preferred forms, can not therefore be interpreted as restriction to scope of patent protection of the present utility model.
Below will be described further each preferred embodiment of the present utility model:
The pressure limiting of the present utility model valve 200 of cutting off the water supply, it comprises a shell 220, this shell can be set to loam cake 221, main casing 222, lower cover 223, as shown in Figure 2, above-mentioned each parts are fixedly connected by the means of fixation of prior aries such as being spirally connected, and, be connected the water intake 231 and the water outlet 232 that form on this shell 220, for preventing to leak at inside formation flow channel 230, must be provided with sealed member at seam crossing, as seal ring etc., this structure by the membrane type reduction valve of prior art is common, does not repeat them here.
In this water intake of the present utility model, also be provided with a shutoff chamber 241, and extend upward along water intake 231, shutoff chamber 241 be provided with a passage 251, one connecting rods 252 can be in this passage at the intended distance intrinsic displacement; This connecting rod 252 is fixedly connected with a closeouts 242 in described shutoff chamber 241, repeatedly during the precalculated position of bar 252 upper and lower displacements, this closeouts 242 is with the flow channel between described water intake 231 of shutoff and the water outlet 232, and this is the pressure limiting water-breaking structure between described water outlet of the present utility model and the water inlet.
This pressure limiting water-breaking structure also comprises an elastic component 261, is arranged between described connecting rod and the described shell, is used for when being lower than predetermined hydraulic pressure, supports described connecting rod 252 and is in automatically and makes described closeouts 242 keep the unimpeded position of described flow channels; When being higher than predetermined hydraulic pressure, described closeouts 242 is impacted by hydraulic pressure, described elastic component 261 is produced compressive force, and when stating predetermined pressure, described connecting rod can remain on automatically and be in the position that makes the flow channel between described water outlet of described closeouts shutoff and the water inlet.
But it is multiple that the particular location of described elastic component of the present utility model can have, as shown in Figure 2, be arranged on described closeouts below, extend described connecting rod downwards from described closeouts 242, be provided with screens, and described elastic component 261 is set to a helical spring, around described connecting rod setting, and between screens and described lower cover 223 this helical spring is set.And in the example of Fig. 3 to Fig. 8, described helical spring then is arranged in the loam cake 221, and for a person skilled in the art, above-mentioned distortion is obvious and does not have additional any creative work, therefore, all should belong to of the present utility model asking for protection within the scope.
Pressure limiting described in the utility model is cut off the water supply in the valve, by the company's of preventing pressure limiting water-breaking structure lost efficacy under high hydraulic pressure, between described connecting rod and described shell, also be provided with only complex structure, be used for when described connecting rod is in the flow channel position that makes between described water outlet of described closeouts shutoff and the water inlet, keep sealed condition.Should end complex structure and be to preventing described closeouts when the shutoff, may be very big from the pressure of water intake, therefore, between described connecting rod 252 and described shell, be provided with cooperating of protuberance and recess, to increase described closeouts hydraulic pressure resistance ability by described connecting rod.
In each embodiment, as shown in Figure 3, the described complex structure of ending can be a bump that is connected and is provided with described connecting rod 252, be preferably an elasticity bump, elastic pawl 253 as shown in Figure 3, its bottom is articulated on the pedestal 254, and this pedestal and described connecting rod are affixed, drives by described connecting rod 252 to move up and down; On described pedestal 254, the shutoff direction of described connecting rod is provided with stop part 255, is used to stop described elastic pawl 253; And, an interlock that should bump be provided with is ended recess 256 again, this interlock ends again recess and is set to be the slightly steep wall again that ends in the shutoff direction of described connecting rod.
Described elastic pawl 253 is when closeouts blocks water intake 231, and described elastic pawl 253 tops will head into described interlock and end recess 256 again, and holds and describedly end again on the wall 257 label 253 ' position as shown in Figure 3; But this elastic pawl by with the drive-connecting shaft elastics wing of described pedestal 254, but because the stop part 255 of described pedestal and the only setting of wall 257 again, described elastic pawl 253 can only can be swung in closeouts is opened the process of shutoff, otherwise, will support the pressure of the described water intake 231 of described connecting rod 252 opposings.
Described another embodiment of complex structure that ends of the present utility model asks for an interview shown in Figure 4ly, and it comprises a pin-and-hole 258 that is provided with on described connecting rod 252; And, to should pin-and-hole being arranged on the resilient pin 259 on the described shell.The position of noting described pin-and-hole and resilient pin is provided with can be different with shown position.
An embodiment again who ends complex structure described in the utility model, ask for an interview shown in Figure 5, it comprises that one is fastened on the shell fragment 271 in the described loam cake 221, conflict in the precalculated position of shutoff direction with described pull bar 252, this precalculated position can be the setting of projection from the described pull bar 252, also can be setting as shown in Figure 5, the helical spring a certain warp 272 that is provided with in loam cake 221 be as the precalculated position of the described shell fragment 271 of conflicting.
An embodiment again who ends complex structure described in the utility model, as shown in Figure 6, it comprises an elastic cylinder 273, extends upward from described water intake 231, and is provided with claw portion 274; The described claw of correspondence portion is provided with snap ring 275 in the lower end of described closeouts 242, is used for when described closeouts 242 is in block-up position, and adaptive ending again is by the pressure of the described water intake of described connecting rod 252 opposings.
The another embodiment who ends complex structure described in the utility model as shown in Figure 7, comprises one from the outside card teat 276 that is provided with of described closeouts 242 downwards; And, extend upward setting from described water intake 231, be used to install the collar portion 277 of described card teat 276; When described closeouts 242 was in block-up position, described collar portion 277 can be answered with described card teat 276 adaptive ending.
A described embodiment again who ends complex structure of the present utility model as shown in Figure 8, also comprises one from the outside card teat 276 that is provided with of described closeouts 242 downwards; And, extend upward setting from described water intake 231, install the elastic cylinder chamber portion 278 of described card teat 276, the top of this post chamber portion is provided with stop part 279; The effect of collar portion 277 roughly the same embodiment illustrated in fig. 7, when being in block-up position in described closure part 242, described stop part 279 can play barrier effect, increases the interior hydraulic pressure of the described water intake of opposing along opposing shutoff direction.
The direction of arrow of shutoff direction described in the utility model as shown in each diagram is meant the movement direction of connecting rod 252 when described closeouts is done the shutoff action.Above-mentioned each diagram has only adopted portion's view, but obviously can understand above-mentioned schematic structure with reference to the valve body of prior art to those skilled in the art.
Working principle of the present utility model is, under normal circumstances, described closeouts 242 will keep the unimpeded of flow channel under the effect of described elastic component 261, and at this moment, connecting rod will be in above-mentioned each illustrated position together with this closeouts.When the membrane type reduction valve damages, because the increasing of hydraulic pressure, the pressure that causes described connecting rod to stand in the flow channel increases suddenly, at this moment, described connecting rod 252 will drive described closeouts 242 and move to the shutoff direction, pressure limiting water-breaking structure of the present utility model begins to work simultaneously, and the shutoff action of closeouts is finished synchronously with the double action that ends that ends complex structure, is used to resist the hydraulic pressure from water intake 231.So, can finish the pressure limiting action of cutting off the water supply.
Should be understood that; above-mentioned description at each specific embodiment is comparatively concrete and detailed; can not therefore be interpreted as restriction to the utility model claim; for example described connecting rod is provided with direction and may be set to laterally; therefore, scope of patent protection of the present utility model should be as the criterion with claims.
Claims (10)
1, a kind of pressure limiting valve of cutting off the water supply, it comprises a shell, and water outlet that is provided with on shell and water inlet, it is characterized in that,
Between described water outlet and water inlet, be provided with the pressure limiting water-breaking structure; This pressure limiting water-breaking structure comprises substantially:
One connecting rod can form displacement along a passage, and be connected with a closeouts, and this closeouts is arranged in the shutoff chamber, but in company with the described water outlet of displacement shutoff of described connecting rod and the flow channel between the water inlet;
One elastic component is arranged between described connecting rod and the described shell, is used for when being lower than predetermined hydraulic pressure, supports described connecting rod and is in automatically and makes described closeouts keep the unimpeded position of described flow channel; And
When being higher than predetermined hydraulic pressure, described connecting rod remains on automatically and is in the position that makes the flow channel between described water outlet of described closeouts shutoff and the water inlet.
2, the pressure limiting according to claim 1 valve of cutting off the water supply, it is characterized in that, between described connecting rod and described shell, also be provided with only complex structure, be used for when described connecting rod is in the flow channel position that makes between described water outlet of described closeouts shutoff and the water inlet, keep sealed condition.
3, the pressure limiting according to claim 2 valve of cutting off the water supply, it is characterized in that, the described complex structure of ending comprises a bump that is connected and is provided with described connecting rod, and, an interlock that should bump be provided with is ended recess again, and this interlock ends again recess and is set to be the slightly steep wall again that ends in the shutoff direction of described connecting rod.
4, the pressure limiting according to claim 3 valve of cutting off the water supply is characterized in that described bump is set to an elastic pawl, and its bottom is articulated on the pedestal, and this pedestal and described connecting rod are affixed; The shutoff direction of the described connecting rod of described pedestal is provided with stop part, is used to stop described elastic pawl.
5, the pressure limiting according to claim 2 valve of cutting off the water supply is characterized in that, the described complex structure of ending also comprises a pin-and-hole that is provided with on described connecting rod; And, to should pin-and-hole being arranged on the resilient pin on the described shell.
6, the pressure limiting according to claim 2 valve of cutting off the water supply is characterized in that, the described complex structure of ending comprises that also one is fastened on the shell fragment on the described shell, conflicts in the precalculated position of shutoff direction with described pull bar.
7, the pressure limiting according to claim 6 valve of cutting off the water supply is characterized in that, described position of conflicting with pull bar is set to a spring radial line of described elastic component.
8, the pressure limiting according to claim 2 valve of cutting off the water supply is characterized in that, the described complex structure of ending comprises an elastic cylinder, extends upward from described water intake, and is provided with claw portion; The described claw of correspondence portion is provided with snap ring in described closeouts lower end, is used for adaptive ending again.
9, the pressure limiting according to claim 2 valve of cutting off the water supply is characterized in that, the described complex structure of ending comprises a card teat that outwards is provided with from described closeouts downwards; And, extend upward from described water intake and to be provided with the collar portion that installs described card teat.
10, the pressure limiting according to claim 2 valve of cutting off the water supply is characterized in that, the described complex structure of ending comprises a card teat that outwards is provided with from described closeouts downwards; And, extending upward from described water intake and to be provided with the elastic cylinder chamber portion that installs described card teat, the top of this post chamber portion is provided with stop part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017733 CN2937705Y (en) | 2006-08-14 | 2006-08-14 | Excess-flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017733 CN2937705Y (en) | 2006-08-14 | 2006-08-14 | Excess-flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937705Y true CN2937705Y (en) | 2007-08-22 |
Family
ID=38361732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620017733 Expired - Fee Related CN2937705Y (en) | 2006-08-14 | 2006-08-14 | Excess-flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937705Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785293A (en) * | 2012-10-31 | 2014-05-14 | 刘爱东 | Pressure limiting water-break water purifier |
| CN112806918A (en) * | 2021-01-13 | 2021-05-18 | 江苏美的清洁电器股份有限公司 | Communication device |
-
2006
- 2006-08-14 CN CN 200620017733 patent/CN2937705Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785293A (en) * | 2012-10-31 | 2014-05-14 | 刘爱东 | Pressure limiting water-break water purifier |
| CN112806918A (en) * | 2021-01-13 | 2021-05-18 | 江苏美的清洁电器股份有限公司 | Communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |