CN208935480U - A kind of backflow preventer of water work - Google Patents
A kind of backflow preventer of water work Download PDFInfo
- Publication number
- CN208935480U CN208935480U CN201821691765.4U CN201821691765U CN208935480U CN 208935480 U CN208935480 U CN 208935480U CN 201821691765 U CN201821691765 U CN 201821691765U CN 208935480 U CN208935480 U CN 208935480U
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- China
- Prior art keywords
- conical pipe
- flow chamber
- conical
- plug
- preventer
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Abstract
The utility model discloses a kind of backflow preventers of water work, including preventer ontology, flow chamber is equipped in the preventer ontology, inlet and liquid outlet are respectively equipped on the two sides inner wall of the flow chamber, conical pipe is fixedly installed on the side inner wall of the flow chamber, and conical pipe covers inlet, the inlet internal screw thread is connected with inlet tube, one end of the inlet tube is run through the outside of conical pipe and is extended in conical pipe, the liquid outlet internal screw thread is connected with outlet tube, is equipped with partition in the flow chamber.The utility model structure is simple; preventer ontology when in use; when there is aqueous reflux; the pressure of inlet tube can be made to be less than the pressure of outlet tube; sealing-plug can be under the action of compressed spring and outlet tube persistently spray the pressure of water; and block sealing-plug to the conical opening of conical pipe, and then Drinking Water pipeline is prevented to flow backwards, protect the Drinking Water safety of resident.
Description
Technical field
The utility model is paddled valve technology field more particularly to a kind of backflow preventer of water work.
Background technique
Backflow preventer is applied in supply equipment, and especially Drinking Water pipeline is flow backwards seriously polluted, and effectively anti-
Only flow backwards polluting device in the case where, in a kind of restriction pipeline of development, water can only one-way flow waterpower control combination device,
Its function is to prevent the medium in pipeline from flowing backwards under any operating condition, is polluted with achieving the purpose that avoid to flow backwards.
It is present to be retrieved since there are this problems, find existing backflow preventer basic structure be two only
It returns valve and eduction valve is constituted, when aqueous reflux, water is applied on the spool of check-valves, is made valve core reset close port, but is
Spool is supported, spool rear portion is provided with shaft, due to the presence of shaft, so that water acts on spool
Area becomes smaller, in addition, shaft is located at the middle part of spool, and the water flow in the middle part of pipeline is more than the water velocity by near wall
Fastly, this prevents spool in turn result in life so that spool cannot be closed quickly from efficiently using the fast water flow of flow velocity
The case where drinking water pipeline living is flow backwards, polluted drinking water, so using we have proposed a kind of backflow preventer of water work
To solve the problems, such as above-mentioned propose.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of water work proposed
Backflow preventer.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of backflow preventer of water work, including preventer ontology, the preventer ontology is interior to be equipped with flow chamber,
Inlet and liquid outlet, fixed peace on the side inner wall of the flow chamber are respectively equipped on the two sides inner wall of the flow chamber
Equipped with conical pipe, and conical pipe covers inlet, and the inlet internal screw thread is connected with inlet tube, and one end of the inlet tube is passed through
It wears the outside of conical pipe and extends in conical pipe, the liquid outlet internal screw thread is connected with outlet tube, sets in the flow chamber
There is partition, partition is run through in one end of the conical pipe, and the conical pipe is equipped with conical opening, and the diameter of the conical opening of conical pipe
It is smaller than the diameter of inlet tube, movable plate is slidably connected in the flow chamber, the side of the movable plate is fixedly installed with close
One end of blocking, the sealing-plug extends in the conical opening of conical pipe, and the conical opening of sealing-plug and conical pipe is adapted, institute
It states and is fixedly installed with positioning plate in flow chamber, and positioning plate is located at the side of movable plate, the movable plate and positioning plate are mutual
Close side is fixedly installed with symmetrically arranged two locating shafts, and the outside fixing sleeve of two opposite locating shafts is equipped with
The same compressed spring.
Preferably, strainer is equipped in the flow chamber, and strainer is between positioning plate and liquid outlet.
Preferably, fixed in the top inner wall and bottom interior wall of the flow chamber to be fixedly installed with limit plate, and limit
For position plate between partition and positioning plate, the side of the limit plate is fixedly installed with rack gear, the outside rotation of the movable plate
Gear there are two being arranged, and two gears are meshed with two rack gears respectively.
Preferably, the outside of the inlet tube and outlet tube offers external screw thread, the inlet and liquid outlet it is interior
Internal screw thread is offered on wall, and external screw thread and internal screw thread are threadedly coupled.
Preferably, sliding rail, the movement are fixedly installed in the top inner wall of the flow chamber and in bottom interior wall
The top and bottom of plate offer sliding slot compatible with sliding rail, and sliding slot and sliding rail are slidably connected.
Preferably, the outside sliding sleeve of the sealing-plug is equipped with gasket, and the sealing-plug passes through gasket and conical pipe
Conical opening fit closely.
Compared with prior art, the utility model has the beneficial effects that preventer ontology is mounted in Drinking Water pipe
When in road, water can flow into conical pipe from the inlet tube of preventer ontology, and the diameter of the conical opening of conical pipe is than inlet tube
Diameter is small, so hydraulic pressure increases when water can be made to pass through the conical opening of conical pipe, and then sealing-plug can be ejected the cone of conical pipe by water
Shape mouth, water will be flowed into slowly in flow chamber by the conical opening of conical pipe, and then water is filtered using strainer, most
Preventer ontology is flowed out by outlet tube afterwards, and when water is flow backwards, the pressure of water in inlet tube can be made to be less than in outlet tube
The pressure of water, sealing-plug can persistently spray under the elastic force of compressed spring with outlet tube under the pressure of water, and make sealing-plug to cone
The conical opening of shape pipe is blocked, and then can effectively prevent the case where Drinking Water pipeline is flow backwards.
The utility model structure is simple, preventer ontology when in use, when there is aqueous reflux, inlet tube can be made
Pressure is less than the pressure of outlet tube, and sealing-plug can make under the action of compressed spring and outlet tube persistently spray the pressure of water
Sealing-plug blocks the conical opening of conical pipe, and then Drinking Water pipeline is prevented to flow backwards, and the life of resident is protected to drink
Water safety.
Fig. 1 be the utility model proposes a kind of water work backflow preventer structural schematic diagram；
Fig. 2 be the utility model proposes a kind of water work backflow preventer Fig. 1 structure sectional view；
Fig. 3 be the utility model proposes a kind of water work backflow preventer part A schematic enlarged-scale view.
In figure: 1 preventer ontology, 2 flow chambers, 3 inlets, 4 liquid outlets, 5 conical pipes, 6 inlet tubes, 7 outlet tubes, 8
Partition, 9 movable plates, 10 sealing-plugs, 11 positioning plates, 12 locating shafts, 13 compressed springs, 14 strainers, 15 limit plates, 16 rack gears, 17
Gear.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-3, a kind of backflow preventer of water work, including preventer ontology 1 are equipped in preventer ontology 1
Flow chamber 2, is respectively equipped with inlet 3 and liquid outlet 4 on the two sides inner wall of flow chamber 2, on the side inner wall of flow chamber 2
It is fixedly installed with conical pipe 5, and conical pipe 5 covers inlet 3,3 internal screw thread of inlet is connected with inlet tube 6, and the one of inlet tube 6
End is run through the outside of conical pipe 5 and is extended in conical pipe 5, and 4 internal screw thread of liquid outlet is connected with outlet tube 7, sets in flow chamber 2
There is partition 8, partition 8 is run through in one end of conical pipe 5, and conical pipe 5 is equipped with conical opening, and the diameter ratio of the conical opening of conical pipe 5
The diameter of inlet tube 6 is small, and movable plate 9 is slidably connected in flow chamber 2, and the side of movable plate 9 is fixedly installed with sealing-plug 10,
One end of sealing-plug 10 extends in the conical opening of conical pipe 5, and the conical opening of sealing-plug 10 and conical pipe 5 is adapted, flowing
Positioning plate 11 is fixedly installed in chamber 2, and positioning plate 11 is located at the side of movable plate 9, movable plate 9 and positioning plate 11 mutually lean on
Close side is fixedly installed with symmetrically arranged two locating shafts 12, and the outside fixation of two opposite locating shafts 12 is arranged
There is the same compressed spring 13, when by preventer ontology 1 in Drinking Water pipeline, water can be from preventer ontology 1
Inlet tube 6 flows into conical pipe 5, and the diameter of the conical opening of conical pipe 5 is smaller than the diameter of inlet tube 6, so water can be made to pass through
Hydraulic pressure increases when the conical opening of conical pipe 5, and then sealing-plug 10 can be ejected the conical opening of conical pipe 5 by water, and water will slowly
It is flowed into flow chamber 2 by the conical opening of conical pipe 5, then water is filtered using strainer 14, finally passes through outlet tube 7
Preventer ontology 1 is flowed out, and when water is flow backwards, the pressure of water in inlet tube 6 can be made to be less than the pressure of water in outlet tube 7,
Sealing-plug 10 can persistently spray under the elastic force of compressed spring 13 with outlet tube 7 under the pressure of water, and make sealing-plug 10 to taper
The conical opening of pipe 5 is blocked, and then can effectively prevent the case where Drinking Water pipeline is flow backwards, the utility model structure
Simply, preventer ontology 1 when in use, when there is aqueous reflux, can make inlet tube 6 pressure be less than outlet tube 7 pressure
Power, sealing-plug 10 can make sealing-plug 10 to taper under the action of compressed spring 13 and outlet tube 7 persistently spray the pressure of water
The conical opening of pipe 5 is blocked, and then Drinking Water pipeline is prevented to flow backwards, and protects the Drinking Water safety of resident.
In the utility model, it is equipped with strainer 14 in flow chamber 2, and strainer 14 is between positioning plate 11 and liquid outlet 4,
Fixation is fixedly installed with limit plate 15 in the top inner wall and bottom interior wall of flow chamber 2, and limit plate 15 is located at 8 He of partition
Between positioning plate 11, the side of limit plate 15 is fixedly installed with rack gear 16, and the outside turning set of movable plate 9 sets that there are two gears
17, and two gears 17 are meshed with two rack gears 16 respectively, the outside of inlet tube 6 and outlet tube 7 offers external screw thread, into
Internal screw thread is offered on the inner wall of liquid mouth 3 and liquid outlet 4, and external screw thread and internal screw thread are threadedly coupled, the top of flow chamber 2
It is fixedly installed on inner wall and sliding rail in bottom interior wall, the top and bottom of movable plate 9 offer compatible with sliding rail
Sliding slot, and sliding slot and sliding rail are slidably connected, the outside sliding sleeve of sealing-plug 10 are equipped with gasket, sealing-plug 10 by gasket and
The conical opening of conical pipe 5 fits closely, and when by preventer ontology 1 in Drinking Water pipeline, water can be from preventer sheet
The inlet tube 6 of body 1 flows into conical pipe 5, and the diameter of the conical opening of conical pipe 5 is smaller than the diameter of inlet tube 6, so can make water
By conical pipe 5 conical opening when hydraulic pressure increase, and then water can by sealing-plug 10 eject conical pipe 5 conical opening, water will be slow
The slow conical opening by conical pipe 5 flows into flow chamber 2, and then water is filtered using strainer 14, finally by going out
Liquid pipe 7 flows out preventer ontology 1, and when water is flow backwards, the pressure of water in inlet tube 6 can be made to be less than water in outlet tube 7
Pressure, sealing-plug 10 can persistently spray under the elastic force of compressed spring 13 with outlet tube 7 under the pressure of water, and keep sealing-plug 10 right
The conical opening of conical pipe 5 is blocked, and then can effectively prevent the case where Drinking Water pipeline is flow backwards, the utility model
Structure is simple, preventer ontology 1 when in use, when there is aqueous reflux, can make inlet tube 6 pressure be less than outlet tube 7
Pressure, sealing-plug 10 and can keep sealing-plug 10 right under the action of compressed spring 13 and outlet tube 7 persistently spray the pressure of water
The conical opening of conical pipe 5 is blocked, and then Drinking Water pipeline is prevented to flow backwards, and the Drinking Water of resident is protected to pacify
Entirely.
Working principle: when by preventer ontology 1 in the Drinking Water pipeline, water can from preventer ontology 1 into
Liquid pipe 6 flows into conical pipe 5, and the diameter of the conical opening of conical pipe 5 is smaller than the diameter of inlet tube 6, so water can be made by cone
Hydraulic pressure increases when the conical opening of shape pipe 5, and then sealing-plug 10 can be ejected the conical opening of conical pipe 5 by water, and movable plate 9 is in hydraulic pressure
Impact under moved, and movable plate 9 is when moving, the gear 17 on movable plate 9 can be made to be rotated on rack gear 16, meeting
Make to shift when movable plate 9 is mobile, plays a part of limiting movable plate 9, movable plate 9 can be such that compressed spring 13 occurs
Deformation, thus water will be in inflow flow chamber 2 slowly, then water is filtered using strainer 14, finally by going out liquid
Pipe 7 flows out in preventer ontology 1, and when water is flow backwards, the pressure of inlet tube 6 is less than the pressure of outlet tube 7, sealing-plug 10
Under the pressure that water can persistently be sprayed with outlet tube 7 under 13 reseting elasticity of compressed spring, and make sealing-plug 10 to the cone of conical pipe 5
Shape mouth is blocked, and then can quickly stop waste water to enter inlet tube 6, effectively prevents Drinking Water pipeline from flowing backwards
Situation protects the Drinking Water safety of resident.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of backflow preventer of water work, including preventer ontology (1), which is characterized in that the preventer ontology (1)
It is interior to be equipped with flow chamber (2), inlet (3) and liquid outlet (4), institute are respectively equipped on the two sides inner wall of the flow chamber (2)
State and be fixedly installed on the side inner wall of flow chamber (2) conical pipe (5), and conical pipe (5) covering inlet (3), it is described into
Liquid mouth (3) internal screw thread is connected with inlet tube (6), and one end of the inlet tube (6) runs through the outside of conical pipe (5) and extends to cone
In shape pipe (5), liquid outlet (4) internal screw thread is connected with outlet tube (7), is equipped with partition (8) in the flow chamber (2), institute
One end of conical pipe (5) is stated through partition (8), the conical pipe (5) is equipped with conical opening, and the conical opening of conical pipe (5)
Diameter is smaller than the diameter of inlet tube (6), slidably connects movable plate (9) in the flow chamber (2), the movable plate (9)
Side is fixedly installed with sealing-plug (10), and one end of the sealing-plug (10) extends in the conical opening of conical pipe (5), and is sealed
The conical opening of plug (10) and conical pipe (5) is adapted, and is fixedly installed with positioning plate (11) in the flow chamber (2), and is positioned
Plate (11) is located at the side of movable plate (9), and the movable plate (9) and positioning plate (11) side close to each other are fixedly installed with
Symmetrically arranged two locating shafts (12), and the outside fixing sleeve of two opposite locating shafts (12) is equipped with the same compressed spring
(13)。
2. a kind of backflow preventer of water work according to claim 1, which is characterized in that the flow chamber (2)
It is interior to be equipped with strainer (14), and strainer (14) is located between positioning plate (11) and liquid outlet (4).
3. a kind of backflow preventer of water work according to claim 1, which is characterized in that the flow chamber (2)
Top inner wall and bottom interior wall on fixation be fixedly installed with limit plate (15), and limit plate (15) be located at partition (8) and calmly
Between position plate (11), the side of the limit plate (15) is fixedly installed with rack gear (16), the outside turning set of the movable plate (9)
If there are two gear (17), and two gears (17) are meshed with two rack gears (16) respectively.
4. a kind of backflow preventer of water work according to claim 1, which is characterized in that the inlet tube (6) and
The outside of outlet tube (7) offers external screw thread, offers internal screw thread on the inner wall of the inlet (3) and liquid outlet (4),
And external screw thread and internal screw thread are threadedly coupled.
5. a kind of backflow preventer of water work according to claim 1, which is characterized in that the flow chamber (2)
Top inner wall on and bottom interior wall on be fixedly installed with sliding rail, the top and bottom of the movable plate (9) offer with
The compatible sliding slot of sliding rail, and sliding slot and sliding rail are slidably connected.
6. a kind of backflow preventer of water work according to claim 1, which is characterized in that the sealing-plug (10)
Outside sliding sleeve is equipped with gasket, and the sealing-plug (10) is fitted closely by the conical opening of gasket and conical pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691765.4U CN208935480U (en) | 2018-10-18 | 2018-10-18 | A kind of backflow preventer of water work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691765.4U CN208935480U (en) | 2018-10-18 | 2018-10-18 | A kind of backflow preventer of water work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935480U true CN208935480U (en) | 2019-06-04 |
Family
ID=66725101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821691765.4U Expired - Fee Related CN208935480U (en) | 2018-10-18 | 2018-10-18 | A kind of backflow preventer of water work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935480U (en) |
-
2018
- 2018-10-18 CN CN201821691765.4U patent/CN208935480U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20211018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |