CN211315237U - Backflow preventer with good sealing performance - Google Patents
Backflow preventer with good sealing performance Download PDFInfo
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- CN211315237U CN211315237U CN201922090098.5U CN201922090098U CN211315237U CN 211315237 U CN211315237 U CN 211315237U CN 201922090098 U CN201922090098 U CN 201922090098U CN 211315237 U CN211315237 U CN 211315237U
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- valve plate
- fixedly connected
- connecting block
- backflow preventer
- check
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- 238000007789 sealing Methods 0.000 title claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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Abstract
The utility model relates to a backflow preventer technical field, and a backflow preventer that the leakproofness is good is disclosed, the water inlet pipe, outlet pipe and non return joint, the non return joint is the S-shaped setting, and the both ends that the non return connects respectively with inlet tube and outlet pipe fixed connection, the inside of inlet tube and the first annular seal valve plate of one end fixedly connected with of non return articulate, first annular seal valve plate right side is equipped with first non return valve plate, the first connecting block of upper end fixedly connected with of first non return valve plate, fixedly connected with second connecting block on the right side of first annular seal valve plate, first connecting block rotates through the pivot with the second connecting block to be connected, the axle wall movable sleeve of pivot is equipped with torque spring, torque spring' S both ends respectively with first connecting block and second connecting block fixed connection. The utility model discloses can carry out multiple non return effect to backflow preventer inside, improve the non return effect, and can improve inside non return leakproofness, the people of being convenient for use.
Description
Technical Field
The utility model relates to a backflow preventer technical field especially relates to a backflow preventer that leakproofness is good.
Background
The backflow preventer is also called as a sewage flow isolating valve, is a safety device for strictly preventing the domestic drinking water pipeline from polluting the water source when the backflow occurs, and can also be applied to other pipeline systems which do not allow media to flow backwards.
Among the prior art, the inside of backflow preventer only has a heavy non return effect to when the medium stops flowing in the backflow preventer, inside remains the medium and has more medium to take place the backward flow, and the people of not being convenient for use, consequently, provides the backflow preventer that the leakproofness is good.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving among the prior art backflow preventer's inside only has a heavy non return effect to when the medium stops flowing in the backflow preventer, inside remains the medium and has more medium to take place the backward flow, the problem that people used not convenient for, and the good backflow preventer of leakproofness that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a backflow preventer with good sealing performance comprises a water inlet pipe, a water outlet pipe and a non-return joint, wherein the non-return joint is arranged in an S shape, two ends of the non-return joint are fixedly connected with the water inlet pipe and the water outlet pipe respectively, one end of the inside of the water inlet pipe, which is connected with the non-return joint, is fixedly connected with a first annular sealing valve plate, the right side of the first annular sealing valve plate is provided with a first non-return valve plate, the upper end of the first non-return valve plate is fixedly connected with a first connecting block, the upper end of the right side of the first annular sealing valve plate is fixedly connected with a second connecting block, the first connecting block and the second connecting block are rotatably connected through a rotating shaft, a torsion spring is movably sleeved on the shaft wall of the rotating shaft, two ends of the torsion spring are fixedly connected with the first connecting block and the second connecting block respectively, one end, the upper end of the second annular sealing valve plate is arranged parallel and level with the lower inner side wall of the water outlet pipe, a second check valve plate is arranged above the second annular sealing valve plate, an ejector rod is fixedly connected to the middle of the upper end of the second check valve plate, a sleeve is movably sleeved on the rod wall of the ejector rod, the upper end of the sleeve is fixedly connected with the inner side wall of the check joint, a reset spring is fixedly connected to the upper end of the ejector rod, and an adjusting mechanism is further arranged above the inside of the sleeve.
Preferably, the left end of the first check valve plate is fixedly connected with a first plug, and the left end of the first check valve plate is also fixedly connected with a first annular sealing gasket.
Preferably, the lower end of the second check valve plate is fixedly connected with a second plug, and the lower end of the second check valve plate is also fixedly connected with a second annular sealing gasket.
Preferably, adjustment mechanism includes clamp plate and threaded rod, the clamp plate is located the horizontal setting in telescopic inside top, and the lower extreme and the reset spring fixed connection of clamp plate, the left and right sides fixedly connected with slider of clamp plate, telescopic inside wall seted up with slider assorted spout, the upper end of clamp plate set up threaded hole and cup joint with the threaded rod screw thread, the last lateral wall that the upper end of threaded rod runs through non return joint is rotated with non return joint's last lateral wall through antifriction bearing and is connected.
Preferably, the upper end of the threaded rod is fixedly connected with a knob, and anti-skid grains are arranged on the surface of the knob.
Preferably, the outer pipe wall of the water inlet pipe is fixedly sleeved with a first flange, and the outer pipe wall of the water outlet pipe is fixedly sleeved with a second flange.
Compared with the prior art, the utility model provides a backflow preventer that leakproofness is good possesses following beneficial effect:
1. this backflow preventer that leakproofness is good through mutually supporting of the sealed valve plate of first annular, first check valve plate, first connecting block, second connecting block, torque spring, the sealed valve plate of second annular, second check valve plate, ejector pin, sleeve and reset spring that are equipped with, is convenient for make backflow preventer carry out multiple sealed non return effect, improves the non return effect.
2. This backflow preventer that leakproofness is good through mutually supporting of the first end cap that is equipped with, first annular sealing pad, second end cap and second annular sealing pad, is convenient for improve the leakproofness between first annular sealing valve plate and first check valve plate and the second annular sealing valve plate and the second check valve plate.
The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can carry out multiple non return effect to backflow preventer inside, improve the non return effect, and can improve inside non return leakproofness, the people of being convenient for use.
Drawings
Fig. 1 is a schematic structural view of a backflow preventer with good sealing performance according to the present invention;
FIG. 2 is an enlarged view of the portion A in FIG. 1;
fig. 3 is an enlarged view of a portion B of fig. 1.
In the figure: the water-saving valve comprises a water inlet pipe 1, a water outlet pipe 2, a check joint 3, a first annular sealing valve plate 4, a first check valve plate 5, a torsion spring 6, a second annular sealing valve plate 7, a second check valve plate 8, a push rod 9, a sleeve 10, a return spring 11, a first plug 12, a first annular sealing gasket 13, a second plug 14, a second annular sealing gasket 15, a pressing plate 16, a threaded rod 17, a sliding block 18, a knob 19, a first flange 20 and a second flange 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a backflow preventer with good sealing performance comprises a water inlet pipe 1, a water outlet pipe 2 and a check joint 3, wherein the check joint 3 is arranged in an S shape, two ends of the check joint 3 are respectively and fixedly connected with the water inlet pipe 1 and the water outlet pipe 2, one end of the interior of the water inlet pipe 1 connected with the check joint 3 is fixedly connected with a first annular sealing valve plate 4, the right side of the first annular sealing valve plate 4 is provided with a first check valve plate 5, the upper end of the first check valve plate 5 is fixedly connected with a first connecting block, the upper end of the right side of the first annular sealing valve plate 4 is fixedly connected with a second connecting block, the first connecting block and the second connecting block are rotatably connected through a rotating shaft, a torsion spring 6 is movably sleeved on the shaft wall of the rotating shaft, two ends of the torsion spring 6 are respectively and fixedly connected with the first connecting block and the second connecting block, one end of the interior of the, the upper end of the second annular sealing valve plate 7 is arranged parallel and level with the lower inner side wall of the water outlet pipe 2, a second check valve plate 8 is arranged above the second annular sealing valve plate 7, an ejector rod 9 is fixedly connected to the middle of the upper end of the second check valve plate 8, a sleeve 10 is movably sleeved on the rod wall of the ejector rod 9, the upper end of the sleeve 10 is fixedly connected with the inner side wall of the check joint 3, a reset spring 11 is fixedly connected to the upper end of the ejector rod 9, and an adjusting mechanism is further arranged above the inner portion of the sleeve 10.
The left end fixedly connected with first end cap 12 of first check valve plate 5, the left end of first check valve plate 5 still fixedly connected with first annular seal pad 13, can improve the leakproofness between first annular seal valve plate 4 and the first check valve plate 5.
The lower extreme fixedly connected with second end cap 14 of second check valve plate 8, the lower extreme of second check valve plate 8 still fixedly connected with second annular seal pad 15, can improve the leakproofness between second annular seal valve plate 7 and the second check valve plate 8.
Adjustment mechanism includes clamp plate 16 and threaded rod 17, clamp plate 16 is located the horizontal setting in inside top of sleeve 10, and the lower extreme and the 11 fixed connection of reset spring of clamp plate 16, clamp plate 16's the left and right sides fixedly connected with slider 18, sleeve 10's inside wall seted up with slider 18 assorted spout, clamp plate 16's upper end threaded hole and threaded rod 17 threaded sleeve, the last lateral wall that non return joint 3 was run through to the upper end of threaded rod 17 rotates with the last lateral wall of non return joint 3 through antifriction bearing to be connected, rotation threaded rod 17 can drive clamp plate 16 downstream, clamp plate 16 can exert pressure to reset spring 11, thereby can adjust reset spring 11 to the elasticity of depression bar 9, be convenient for adjust the pressure of depression bar 9 to non return valve plate 8.
The upper end of the threaded rod 17 is fixedly connected with a knob 19, and anti-skidding lines are arranged on the surface of the knob 19, so that people can rotate the knob 19 to drive the threaded rod 17 to rotate.
The outer pipe wall of the water inlet pipe 1 is fixedly sleeved with a first flange 20, and the outer pipe wall of the water outlet pipe 2 is fixedly sleeved with a second flange 21, so that the water inlet pipe 1 and the water outlet pipe 2 can be conveniently connected with a pipeline.
The utility model discloses in, during the use, intake through inlet tube 1, go out water through outlet pipe 2, torque spring 6 through being equipped with can apply the torsional force to first connecting block, first connecting block drives first check valve plate 5 and rotates, thereby can make first check valve plate 5 and first annular seal valve plate 4 closed, carry out the non return effect, reset spring 11 through being equipped with exerts elasticity to ejector pin 9, ejector pin 9 exerts pressure to second check valve plate 8, make second check valve plate 8 and second annular seal valve plate 7 closed mutually, carry out the non return effect, the people of being convenient for use.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A backflow preventer with good sealing performance comprises a water inlet pipe (1), a water outlet pipe (2) and a check joint (3), and is characterized in that the check joint (3) is arranged in an S shape, the two ends of the check joint (3) are fixedly connected with the water inlet pipe (1) and the water outlet pipe (2) respectively, one end of the interior of the water inlet pipe (1) connected with the check joint (3) is fixedly connected with a first annular sealing valve plate (4), the right side of the first annular sealing valve plate (4) is provided with a first check valve plate (5), the upper end of the first check valve plate (5) is fixedly connected with a first connecting block, the upper end of the right side of the first annular sealing valve plate (4) is fixedly connected with a second connecting block, the first connecting block is rotatably connected with the second connecting block through a rotating shaft, a torsion spring (6) is movably sleeved on the shaft wall of the rotating shaft, the two ends of the torsion spring (6) are fixedly connected with the first connecting block and the, the inside of check joint (3) is close to the horizontal second annular seal valve plate (7) that sets up of one end fixedly connected with of outlet pipe (2), the upper end of second annular seal valve plate (7) sets up with the lower inside wall parallel and level of outlet pipe (2), the top of second annular seal valve plate (7) is equipped with second check valve plate (8), the upper end middle part fixedly connected with ejector pin (9) of second check valve plate (8), the pole wall movable sleeve of ejector pin (9) is equipped with sleeve (10), inside wall fixed connection is gone up with check joint (3) in the upper end of sleeve (10), the upper end fixedly connected with reset spring (11) of ejector pin (9), the inside top of sleeve (10) still is equipped with adjustment mechanism.
2. A backflow preventer according to claim 1, characterized in that the left end of the first check valve plate (5) is fixedly connected with a first plug (12), and the left end of the first check valve plate (5) is further fixedly connected with a first annular sealing gasket (13).
3. A backflow preventer according to claim 1, characterized in that the lower end of the second check valve plate (8) is fixedly connected with a second plug (14), and the lower end of the second check valve plate (8) is further fixedly connected with a second annular gasket (15).
4. The backflow preventer with good sealing performance as claimed in claim 1, wherein the adjusting mechanism comprises a pressing plate (16) and a threaded rod (17), the pressing plate (16) is located above the inside of the sleeve (10) and transversely arranged, the lower end of the pressing plate (16) is fixedly connected with the reset spring (11), sliders (18) are fixedly connected to the left side and the right side of the pressing plate (16), sliding grooves matched with the sliders (18) are formed in the inner side wall of the sleeve (10), threaded holes are formed in the upper end of the pressing plate (16) and are in threaded sleeve connection with the threaded rod (17), and the upper end of the threaded rod (17) penetrates through the upper side wall of the check joint (3) and is rotatably connected with the upper side wall of the check joint (3) through a rolling bearing.
5. A backflow preventer according to claim 4, characterized in that the upper end of the threaded rod (17) is fixedly connected with a knob (19), and the surface of the knob (19) is provided with anti-skid threads.
6. A backflow preventer with good sealing performance according to claim 1, wherein the outer wall of the water inlet pipe (1) is fixedly sleeved with a first flange (20), and the outer wall of the water outlet pipe (2) is fixedly sleeved with a second flange (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090098.5U CN211315237U (en) | 2019-11-28 | 2019-11-28 | Backflow preventer with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090098.5U CN211315237U (en) | 2019-11-28 | 2019-11-28 | Backflow preventer with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211315237U true CN211315237U (en) | 2020-08-21 |
Family
ID=72065424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922090098.5U Active CN211315237U (en) | 2019-11-28 | 2019-11-28 | Backflow preventer with good sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211315237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943982A (en) * | 2021-02-01 | 2021-06-11 | 安徽荣达阀门有限公司 | Water inlet end sealing valve clack device of backflow preventer |
-
2019
- 2019-11-28 CN CN201922090098.5U patent/CN211315237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943982A (en) * | 2021-02-01 | 2021-06-11 | 安徽荣达阀门有限公司 | Water inlet end sealing valve clack device of backflow preventer |
| CN112943982B (en) * | 2021-02-01 | 2024-06-07 | 安徽荣达阀门有限公司 | Valve clack device is sealed to water inlet end of backflow preventer |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A backflow preventer with good sealing performance Granted publication date: 20200821 Pledgee: Tongling Yian District Financing Guarantee Center Co.,Ltd. Pledgor: Anhui Rongda Valve Co.,Ltd. Registration number: Y2024980035371 |