CN211117800U - Valve clack device for water inlet end of backflow preventer - Google Patents
Valve clack device for water inlet end of backflow preventer Download PDFInfo
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- CN211117800U CN211117800U CN201921763282.5U CN201921763282U CN211117800U CN 211117800 U CN211117800 U CN 211117800U CN 201921763282 U CN201921763282 U CN 201921763282U CN 211117800 U CN211117800 U CN 211117800U
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- backflow preventer
- valve
- water inlet
- rod
- inlet end
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Abstract
The utility model discloses a backflow preventer intake end closing valve clack device, including backflow preventer main part, backflow preventer main part intracavity is provided with the main valve pole, and the main valve pole both sides all are provided with the valve plate, be provided with the water inlet valve rod on the valve plate, and water intaking valve pole one side is connected with the closed hinge rod, closed hinge rod one side is provided with the ball sealer, and has seted up the through-hole on the ball sealer, ball sealer one side is provided with closed panel. This backflow preventer water inlet end sealing valve clack device is through driving the ball sealer and the closing panel contact and seal the closing panel when water intaking valve pole rotates to close, thereby separate into two cavitys with the end of intaking of backflow preventer main part, guarantee the end of intaking of backflow preventer and through circulation passageway to control chamber, do not receive the influence of water supply system upstream pressure fluctuation, keep control chamber pressure stable, can guarantee when water supply system upstream pressure is frequent undulant, the sluicing valve of backflow preventer main part does not have the phenomenon of leaking.
Description
Technical Field
The utility model relates to a backflow preventer equipment technical field specifically is backflow preventer intake end sealing valve clack device.
Background
The backflow preventer is a hydraulic control combination device which strictly limits water in a pipeline to flow in one direction under the conditions that a running water supply device, especially a domestic drinking water pipeline, has serious backflow pollution and no device for effectively preventing backflow pollution is available, and has the function of preventing media in the pipeline from flowing backwards under any working condition so as to achieve the purpose of avoiding backflow pollution; at present, the backflow preventer mainly comprises a low-resistance backflow preventer and a pressure-reducing backflow preventer, the head loss of the low-resistance backflow preventer according to the national standard is less than 3 meters, and the head loss of the pressure-reducing backflow preventer is less than 7 meters.
The middle cavity drain valve of the existing backflow preventer is influenced by the pressure toggle of the water inlet end, so that the water leakage phenomenon can occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a backflow preventer water inlet end seals valve clack device to the problem of water leakage can appear in the middle chamber outlet valve of the backflow preventer that provides among the above-mentioned background art of solution.
In order to achieve the purpose, the utility model provides a following technical scheme, backflow preventer intake end closing valve clack device, including backflow preventer main part, backflow preventer main part intracavity is provided with the main valve pole, and the main valve pole both sides all are provided with the valve plate, be provided with the water inlet valve pole on the valve plate, and water intaking valve pole one side is connected with the closed hinge pole, closed hinge pole one side is provided with the ball sealer, and has seted up the through-hole on the ball sealer, ball sealer one side is provided with closing panel, and is provided with the through-hole on the closing panel.
Preferably, a flow passage is arranged on the inner wall of the backflow preventer body, a control cavity is arranged on the inner wall of the flow passage, a main valve rod is arranged inside the control cavity, and a water drain valve is arranged on the outer wall of the main valve rod.
Preferably, the outer wall of the backflow preventer body is provided with a screw cap and a bayonet, and the bayonet is arranged on one side of the screw cap.
Preferably, the bayonet is in an L-shaped structure, and the bayonet is welded with the backflow preventer body.
Preferably, a screw rod penetrates through the screw cap, the screw rod penetrates through the backflow preventer body and is connected with the rubber block, and the rubber block is located at the upper end and the lower end of the sealing ball.
Preferably, the upper end of the screw rod is provided with a ring buckle, a fixing rod penetrates through the ring buckle, and the fixing rod is inserted into the bayonet.
Compared with the prior art, the beneficial effects of the utility model are that: this backflow preventer water inlet end sealing valve clack device is through driving the ball sealer and the closing panel contact and seal the closing panel when water intaking valve pole rotates to close, thereby separate into two cavitys with the end of intaking of backflow preventer main part, guarantee the end of intaking of backflow preventer and through circulation passageway to control chamber, do not receive the influence of water supply system upstream pressure fluctuation, keep control chamber pressure stable, can guarantee when water supply system upstream pressure is frequent undulant, the sluicing valve of backflow preventer main part does not have the phenomenon of leaking.
Drawings
FIG. 1 is a schematic view of the structure of the closed valve flap device at the water inlet end of the backflow preventer of the present invention;
FIG. 2 is a right side view of a sealing panel of the backflow preventer inlet end sealing valve flap device of the present invention;
FIG. 3 is an enlarged schematic view of the valve flap device at the water inlet end of the backflow preventer of the present invention at the position A in FIG. 1.
In the figure: 1. the backflow preventer comprises a backflow preventer body, 2, a closed hinge rod, 3, a sealing ball, 4, a closed panel, 5, a fixing rod, 6, a buckle, 7, a bayonet, 8, a water inlet valve rod, 9, a flow channel, 10, a control cavity, 11, a main valve rod, 12, a water drain valve, 13, a through hole, 14, a screw cap, 15, a rubber block, 16, a valve plate, 17 and a screw rod.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the technical scheme is that the backflow preventer comprises a backflow preventer main body 1, a main valve rod 11 is arranged in a cavity of the backflow preventer main body 1, the backflow preventer main body 1 is in threaded connection with the main valve rod 11, valve plates 16 are arranged on two sides of the main valve rod 11, the valve plates 16 are not in contact with the main valve rod 11, a flow passage 9 is arranged on the inner wall of the backflow preventer main body 1, a control cavity 10 is arranged on the inner wall of the flow passage 9, the main valve rod 11 is arranged in the control cavity 10, a drain valve 12 is arranged on the outer wall of the main valve rod 11, a screw cap 14 and a bayonet 7 are arranged on the outer wall of the backflow preventer main body 1, the screw cap 14 and the bayonet 7 are fixedly welded to the backflow preventer main body 1, the bayonet 7 is arranged on one side of a screw cap 14, the bayonet 7 is arranged on the right side of the screw cap 14, the bayonet 7 is in a structure of a 'L', the bayonet 7 is welded to the screw cap main body 1, the screw cap 7 is in a structure, the screw cap 7 is welded to the backflow preventer main body 1, the screw cap 17, the screw cap 14 penetrates through the screw cap 17, the screw cap 17 and the screw cap 14 are in threaded connection with the sealing device 4, the sealing device 4, the sealing device is arranged on the sealing device, the sealing plug is arranged on the sealing device, the sealing device is arranged on the sealing device, the sealing device 4, the sealing device 4 is arranged on the sealing device, the sealing device.
The working principle is as follows: when the backflow preventer is used, the device is simply known, important parts of the device are checked after the device is known, the device is put into use formally after no problem is detected, when the backflow preventer is used, the backflow preventer body 1 is opened, the water inlet valve rod 8 drives the sealing ball 3 to be opened through the sealing hinge rod 2 after the backflow preventer body 1 is opened, the sealing ball 3 is separated from the sealing panel 4, water at the water inlet end of the backflow preventer body 1 smoothly passes through the backflow preventer body 1, when the backflow preventer body 1 is closed, the sealing ball 3 is slowly reset under the driving of the water inlet valve rod 8 and is in contact with the sealing panel 4 to fill the through hole on the sealing panel 4, after the sealing ball 3 is fixed, the screw rod 17 can be rotated to enable the screw rod 17 to drive the rubber block 15 to slowly approach the sealing ball 3, and the screw rod 17 can be stopped to rotate after the rubber block 15 is in close contact with the sealing ball 3, then, the fixing rod 5 is taken out to penetrate through the ring buckle 6 on the screw rod 17, and the tail end of the fixing rod is inserted into the bayonet 7 to fix the rubber block 15, so that the rubber block 15 always supports against the outer wall of the sealing ball 3, the purpose of improving the sealing effect is achieved, and the working principle of the backflow preventer water inlet end closed valve clack device is realized.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The water inlet end of the backflow preventer is sealed with the valve clack device, and the backflow preventer is characterized in that: including backflow preventer main part (1), backflow preventer main part (1) intracavity is provided with main valve rod (11), and main valve rod (11) both sides all are provided with valve plate (16), be provided with into water valve rod (8) on valve plate (16), and into water valve rod (8) one side and seal hinge rod (2) and be connected, seal hinge rod (2) one side is provided with ball sealer (3), and has seted up the through-hole on ball sealer (3), ball sealer (3) one side is provided with closing panel (4), and is provided with through-hole (13) on closing panel (4).
2. The backflow preventer water inlet end closing flap device of claim 1, wherein: the backflow preventer body (1) is characterized in that a flow passage (9) is arranged on the inner wall of the backflow preventer body (1), a control cavity (10) is arranged on the inner wall of the flow passage (9), a main valve rod (11) is arranged in the control cavity (10), and a drain valve (12) is arranged on the outer wall of the main valve rod (11).
3. The backflow preventer water inlet end closing flap device of claim 1, wherein: the backflow preventer body (1) is provided with a screw cap (14) and a bayonet (7) on the outer wall, and the bayonet (7) is arranged on one side of the screw cap (14).
4. The backflow preventer water inlet end closing valve clack device according to claim 3, wherein the bayonet (7) is in a 'L' shape, and the bayonet (7) is welded to the backflow preventer body (1).
5. The backflow preventer water inlet end closing flap device of claim 3, wherein: the screw cap (14) is internally provided with a screw rod (17) in a penetrating manner, the screw rod (17) penetrates through the backflow preventer body (1) to be connected with the rubber block (15), and the rubber block (15) is positioned at the upper end and the lower end of the sealing ball (3).
6. The backflow preventer water inlet end sealing flap device of claim 5, wherein: the upper end of the screw rod (17) is provided with a ring buckle (6), a fixing rod (5) penetrates through the ring buckle (6), and the fixing rod (5) is inserted into the bayonet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763282.5U CN211117800U (en) | 2019-10-21 | 2019-10-21 | Valve clack device for water inlet end of backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763282.5U CN211117800U (en) | 2019-10-21 | 2019-10-21 | Valve clack device for water inlet end of backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117800U true CN211117800U (en) | 2020-07-28 |
Family
ID=71694436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921763282.5U Active CN211117800U (en) | 2019-10-21 | 2019-10-21 | Valve clack device for water inlet end of backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211117800U (en) |
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2019
- 2019-10-21 CN CN201921763282.5U patent/CN211117800U/en active Active
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