CN209557720U - A kind of built-in draining anti-backflow apparatus - Google Patents
A kind of built-in draining anti-backflow apparatus Download PDFInfo
- Publication number
- CN209557720U CN209557720U CN201920251116.0U CN201920251116U CN209557720U CN 209557720 U CN209557720 U CN 209557720U CN 201920251116 U CN201920251116 U CN 201920251116U CN 209557720 U CN209557720 U CN 209557720U
- Authority
- CN
- China
- Prior art keywords
- wall
- built
- spring
- sealing plate
- annular
- 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.)
- Active
Links
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses a kind of built-in draining anti-backflow apparatus, including valve body, the valve body both ends are respectively inlet and outlet, the inlet and outlet both ends are welded with terminal pad, the valve interior wall includes that there are two annular retaining rings, and two annular retaining ring outer walls are rabbeted the same annular disk, two annular disk side outer walls are provided with rounded channels, the rounded channels center position is provided with circular channel, annular disk side outer wall is provided with spring scarfing slot, and spring scarfing slot embeds and is connected to spring, the spring one end interlocking has sealing plate, the sealing plate side outer wall center position is welded with connecting column.The utility model can be held out against sealing plate using pressure when water outlet pressure is larger, to will not occur to flow backwards phenomenon, and can be stopped to the gap between valve body, be avoided water and flow through the case where gap is flow backwards, improve the anti-backflow effect of device.
Description
Technical field
The utility model relates to backflow preventer technical field more particularly to a kind of built-in draining anti-backflow apparatus.
Background technique
Backflow preventer is a kind of check valve for strictly preventing backflow pollution, be typically mounted on Drinking Water pipeline with
On the pipeline connected between non-Drinking Water pipeline, mainly protect the water quality of its front end Drinking Water from the non-life in rear end
The backflow pollution of drinking water.At reflux, the low pressure partition for generating intermediate valve chamber, to be returned caused by blocking seal failure
Stream pollution.
There are more a variety of backflow preventers in the market, these backflow preventers are various informative, have nothing in common with each other, but still have one
A little backflow preventer existing defects, not can solve backward flow problem, for example, part backflow preventer anti-backflow effect compared with
Difference is not able to satisfy the requirement of people.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of built-in drainage type proposed
Backflow preventer.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of built-in draining anti-backflow apparatus, including valve body, the valve body both ends are respectively inlet and outlet, institute
It states inlet and outlet both ends and is welded with terminal pad, the valve interior wall includes that there are two annular retaining rings, and two annulars
Retaining ring outer wall, which is rabbeted, the same annular disk, and two annular disk side outer walls are provided with rounded channels, the spherical surface groove center
Circular channel is provided at position, annular disk side outer wall is provided with spring scarfing slot, and spring scarfing slot embeds and is connected to spring,
The spring one end interlocking has sealing plate, and the sealing plate side outer wall center position is welded with connecting column, and connecting column position
In in circular channel, connection column outer wall is equipped with the protrusion equidistantly distributed.
Further, terminal pad side outer wall is provided with the threaded hole being distributed in a ring, and terminal pad side outer wall is opened
There is annular seal groove.
Further, clamping groove is provided on the outside of the circular channel, and clamping groove is disc.
Further, the sealing plate, which is located on the outer wall of connecting column side, is bonded with rubber washer, and rubber washer with
Clamping groove forms seamless clamping.
Further, the inlet and outlet are taper header structure, and inlet and outlet are close to terminal pad
One end diameter it is smaller.
Further, the connecting column is socketed with annular ring, and the specification of annular ring and circle close to one end of sealing plate
The specification in channel is adapted.
Further, the valve interior wall is equipped with filter membrane, and filter membrane is located between two annular retaining rings.
The utility model has the following beneficial effects:
1. passing through the setting of annular retaining ring two sides outer wall construction, spherical surface slot structure increases unit area convenient for convergence water flow
On impulse force so that open sealing plate so that water flow is convenient for through two circular channels, the outer wall being not processed makes annular gear
Circle is balanced in hydraulic pressure lower stress, improves the stability of device.
2. when water inlet pressure is larger, water flow can open sealing plate by spring and sealing plate, and then from water outlet stream
Out, when hydraulic balance, spring reset, water flow can not pass through, and when water outlet pressure is larger, can hold out against sealing plate, thus not
It can occur to flow backwards phenomenon, improve the anti-backflow ability of device.
3. by the setting of rubber washer, when water outlet pressure is larger, under the cooperation of water flow and air pressure, sealing plate quilt
It holds out against, rubber washer is bonded with clamping groove, is stopped to the gap between valve body, is avoided water and is flowed through the case where gap is flow backwards
Occur, improves the anti-backflow effect of device.
Detailed description of the invention
Fig. 1 be the utility model proposes the master of built-in draining anti-backflow apparatus a kind of cut open structural schematic diagram；
Fig. 2 be the utility model proposes a kind of built-in draining anti-backflow apparatus partial enlargement structural representation；
Fig. 3 be the utility model proposes a kind of built-in draining anti-backflow apparatus schematic view of the front view.
In figure: 1- valve body, 2- annular retaining ring, 3- annular disk, 4- connecting column, 5- annular ring, 6- rounded channels, 7- conical head knot
Structure, 8- sealing plate, 9- terminal pad, 10- threaded hole, 11- annular seal groove, 12- circular channel, 13- spring scarfing slot, 14- bullet
Spring, 15- filter membrane, 16- rubber washer, 17- clamping groove, 18- water inlet, 19- water outlet.
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 built-in draining anti-backflow apparatus, including valve body 1,1 both ends of valve body are respectively water inlet 18
With water outlet 19, water inlet 18 and 19 both ends of water outlet are welded with terminal pad 9, connect convenient for device, and 1 inner wall of valve body includes
Two annular retaining rings 2, and two 2 outer walls of annular retaining ring are rabbeted the same annular disk 3, two 3 side outer walls of annular disk are opened
There are rounded channels 6, the structure of rounded channels 6 increases the impulsive force on unit area, 6 center of rounded channels convenient for convergence water flow
Place is provided with circular channel 12, and 3 side outer wall of annular disk is provided with spring scarfing slot 13, and spring scarfing slot 13 embeds and is connected to spring
14, the interlocking of 14 one end of spring has sealing plate 8, and 8 side outer wall center position of sealing plate is welded with connecting column 4, and connecting column 4
In in circular channel 12, when pressure is larger at water inlet 18, water flow can open sealing plate 8, and spring 14, which is in, at this time stretches shape
State, when hydraulic balance, spring 14 resets, so that water flow can not pass through, it, can be by sealing plate 8 when pressure is larger at water outlet 19
It holds out against, to will not occur to flow backwards phenomenon, improves the anti-backflow ability of device, 4 outer wall of connecting column, which is equipped with, to be equidistantly distributed
Protrusion increases the contact area with water flow, convenient for opening sealing plate 8.
In the utility model, 9 side outer wall of terminal pad is provided with the threaded hole 10 being distributed in a ring, outside 9 side of terminal pad
Wall is provided with annular seal groove 11, connects convenient for device.
Clamping groove 17 is provided on the outside of circular channel 12, and clamping groove 17 is disc, sealing plate 8 is located at 4 side of connecting column
Outer wall on be bonded with rubber washer 16, and rubber washer 16 and clamping groove 17 form seamless clamping, the pressure at water outlet 19
When larger, under the cooperation of water flow and air pressure, sealing plate 8 is held out against, and rubber washer 16 is bonded with clamping groove 17, to valve body 1 it
Between gap stopped, avoid water and flow through the case where gap is flow backwards, improve the anti-backflow effect of device.
Water inlet 18 and water outlet 19 are taper header structure 7, and water inlet 18 and water outlet 19 are close to the one of terminal pad 9
Hold diameter smaller.
Connecting column 4 is socketed with annular ring 5, and the rule of the specification of annular ring 5 and circular channel 12 close to one end of sealing plate 8
Lattice are adapted, and 1 inner wall of valve body is equipped with filter membrane 15, and filter membrane 15 is located between two annular retaining rings 2.
Working principle: in use, device connection finishes, when draining, pressure is larger at water inlet 18,4 outer wall of connecting column
Protrusion and rounded channels 6 all wash sealing plate 8 open for water flow and provide power, and water flows through the outflow of circular channel 12, at this time at spring 14
In tensional state, when hydraulic balance, spring 14 resets, so that water flow can not pass through, it can when pressure is larger at water outlet 19
It can occur to flow backwards phenomenon, since the direction of motion of sealing plate 8 is unidirectional, so sealing plate 8 will not be at water outlet 19 at this time
Movement, and under the impact of pressure and water flow sealing plate 8 can be held out against, rubber washer 16 is bonded with clamping groove 17, to valve body 1 it
Between gap stopped, avoid water and flow through the case where gap is flow backwards.
In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in
The instruction such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends ", " first ", " second "
Orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.
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 (7)
1. a kind of built-in draining anti-backflow apparatus, including valve body (1), which is characterized in that valve body (1) both ends be respectively into
The mouth of a river (18) and water outlet (19), the water inlet (18) and water outlet (19) both ends are welded with terminal pad (9), the valve body
(1) inner wall includes there are two annular retaining ring (2), and two annular retaining ring (2) outer walls are rabbeted and had the same annular disk (3), and two
A annular disk (3) side outer wall is provided with rounded channels (6), and rounded channels (6) center position is provided with circular channel (12),
Annular disk (3) side outer wall is provided with spring scarfing slot (13), and spring scarfing slot (13) is embedded and is connected to spring (14), described
The interlocking of spring (14) one end has sealing plate (8), and sealing plate (8) side outer wall center position is welded with connecting column (4), and
Connecting column (4) is located in circular channel (12), and connecting column (4) outer wall is equipped with the protrusion equidistantly distributed.
2. a kind of built-in draining anti-backflow apparatus according to claim 1, which is characterized in that the terminal pad (9) one
Side outer wall is provided with the threaded hole (10) being distributed in a ring, and terminal pad (9) side outer wall is provided with annular seal groove (11).
3. a kind of built-in draining anti-backflow apparatus according to claim 1, which is characterized in that the circular channel (12)
Outside is provided with clamping groove (17), and clamping groove (17) is disc.
4. a kind of built-in draining anti-backflow apparatus according to claim 3, which is characterized in that sealing plate (8) position
In being bonded with rubber washer (16) on the outer wall of connecting column (4) side, and rubber washer (16) and clamping groove (17) formed it is seamless
Clamping.
5. a kind of built-in draining anti-backflow apparatus according to claim 1, which is characterized in that the water inlet (18) and
Water outlet (19) is taper header structure (7), and water inlet (18) and water outlet (19) close to terminal pad (9) one end diameter compared with
It is small.
6. a kind of built-in draining anti-backflow apparatus according to claim 1, which is characterized in that the connecting column (4) is leaned on
One end of nearly sealing plate (8) is socketed with annular ring (5), and the specification of annular ring (5) is adapted with the specification of circular channel (12).
7. a kind of built-in draining anti-backflow apparatus according to claim 1, which is characterized in that valve body (1) inner wall
Equipped with filter membrane (15), and filter membrane (15) is located between two annular retaining rings (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251116.0U CN209557720U (en) | 2019-02-28 | 2019-02-28 | A kind of built-in draining anti-backflow apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251116.0U CN209557720U (en) | 2019-02-28 | 2019-02-28 | A kind of built-in draining anti-backflow apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557720U true CN209557720U (en) | 2019-10-29 |
Family
ID=68311330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920251116.0U Active CN209557720U (en) | 2019-02-28 | 2019-02-28 | A kind of built-in draining anti-backflow apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359430A (en) * | 2020-03-24 | 2020-07-03 | 杭州野光环保科技有限公司 | Formaldehyde purification device |
-
2019
- 2019-02-28 CN CN201920251116.0U patent/CN209557720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359430A (en) * | 2020-03-24 | 2020-07-03 | 杭州野光环保科技有限公司 | Formaldehyde purification device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203421235U (en) | Check valve | |
| CN209557720U (en) | A kind of built-in draining anti-backflow apparatus | |
| CN105135001B (en) | Waterway conversion valve and the water purifier with waterway conversion valve | |
| CN208153767U (en) | A kind of full-bore welding ball valve | |
| CN208519229U (en) | A kind of check valve with operating device | |
| CN208605682U (en) | A kind of combined type check-valves | |
| CN111963728B (en) | Novel embedded check valve | |
| CN208519228U (en) | A kind of check valve | |
| CN204664500U (en) | Structure improved safety check | |
| CN211202914U (en) | Multifunctional valve | |
| CN103727269A (en) | Novel combined ball valve | |
| CN202945663U (en) | Double-arc check valve | |
| CN217762213U (en) | Non-return angle valve | |
| CN210240663U (en) | Precision check valve cover | |
| CN202338663U (en) | Novel one-way valve | |
| CN219388705U (en) | Diaphragm type check valve | |
| CN216946323U (en) | Portable manual seawater desalination device of engineering plastics direction support type | |
| CN208793696U (en) | A kind of control valve of intellectual water meter | |
| CN220354553U (en) | Low resistance backflow preventer | |
| CN219975413U (en) | Gate valve with good sealing performance | |
| CN103629364A (en) | Leakage-proof stop valve | |
| CN213064754U (en) | Self sealss swing check valve | |
| CN215928508U (en) | Check valve convenient for cleaning blockage in pipe | |
| CN214789073U (en) | Angle valve | |
| CN217130422U (en) | Water conservancy check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |