CN219366859U - Electric ball valve with backflow preventing device - Google Patents
Electric ball valve with backflow preventing device Download PDFInfo
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- CN219366859U CN219366859U CN202220840764.1U CN202220840764U CN219366859U CN 219366859 U CN219366859 U CN 219366859U CN 202220840764 U CN202220840764 U CN 202220840764U CN 219366859 U CN219366859 U CN 219366859U
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Abstract
The utility model discloses an electric ball valve with a backflow prevention device, which comprises a valve body, wherein a ball body for controlling fluid and a valve rod for driving the ball body are arranged in the valve body, a backflow prevention block is arranged at the lower end of the valve body and is communicated with a liquid inlet cavity and a liquid outlet cavity of the valve body, a backflow prevention function external connection channel for guiding backflow high-pressure water to the valve rod is arranged at the outer wall of the backflow prevention block, the ball body divides the valve body into the liquid inlet cavity and the liquid outlet cavity, and the rotation of the ball body controls the on-off of the liquid inlet cavity and the liquid outlet cavity. The utility model discloses a ball valve structure with backflow prevention function, which is characterized in that a backflow prevention block is arranged at the lower end of a valve body of an electric ball valve, an external channel with the backflow prevention function is arranged at the outer wall of the backflow prevention block, so that high-pressure backflow water can be led to a valve rod, a locking structure is arranged between the valve rod and a ball body, the locking structure between the valve rod and the ball body can be opened by the backflow high-pressure water, and the opened ball body can be closed under the action of a torsion spring for closing the backflow prevention ball body.
Description
Technical Field
The utility model belongs to the technical field of electric ball valves, and particularly relates to an electric ball valve with a backflow preventing device.
Background
The ball valve is a flow control and pipeline opening and closing control element commonly used in pipeline network design, a valve rod for control is arranged in the ball valve, and the valve rod can be further divided into a manual ball valve and an electric ball valve according to different driving modes.
However, the current electric ball valve does not have a backflow preventing structure for the ball valve.
Disclosure of Invention
The utility model provides an electric ball valve with a backflow preventing device, which aims to solve the problems existing in the prior art.
The technical scheme of the utility model is as follows: the utility model provides an electric ball valve of anti-backflow device in area, includes the valve body, be provided with the spheroid that carries out fluid control and carry out driven valve rod to the spheroid in the valve body, the valve body lower extreme is provided with prevents the refluence piece, prevent the feed liquor chamber, the play liquid chamber intercommunication of refluence piece and valve body, prevent that refluence piece outer wall department is provided with the external passageway of anti-backflow function that will refluence high pressure water guide the valve rod.
Furthermore, the ball divides the valve body into a liquid inlet cavity and a liquid outlet cavity, and the rotation of the ball controls the on-off of the liquid inlet cavity and the liquid outlet cavity.
Furthermore, a diaphragm control upper cavity channel and a diaphragm control lower cavity channel are formed in the backflow prevention block, the diaphragm control upper cavity channel is communicated with the liquid inlet cavity, and the diaphragm control lower cavity channel is communicated with the liquid outlet cavity.
Furthermore, an inner channel of the backflow preventing function is formed in the backflow preventing block, and the inner channel of the backflow preventing function is communicated with an outer channel of the backflow preventing function.
Furthermore, the backflow preventing functional external channel is communicated with the backflow preventing functional channel on the side face of the valve body in the valve body, and connecting joints for connection are formed at two ends of the backflow preventing functional external channel.
Furthermore, a locking structure is arranged between the valve rod and the ball body, a backflow-preventing ball body closing torsion spring is arranged in the valve body, and the backflow-preventing ball body closing torsion spring is connected with the ball body.
Still further, be provided with annular seal chamber between valve body and the valve rod, form the inside function channel that prevents flowing backwards of upper valve rod in the valve rod, the inside function channel that prevents flowing backwards of valve rod communicates with annular seal chamber.
Furthermore, a transverse assembly channel is formed in the valve rod, a backflow preventing push rod sliding along the transverse assembly channel is arranged in the transverse assembly channel, a ball pin which is inserted into the transverse assembly channel and props against the backflow preventing push rod is arranged in the ball, and the ball pin realizes the fixation of the ball and the valve rod.
Furthermore, the locking structure comprises a sphere pin, a backflow preventing push rod and a return spring, one end of the return spring is connected with a groove in the sphere, and the other end of the return spring is connected with the sphere pin to realize elastic ejection of the sphere pin.
Furthermore, the transverse assembly channel is communicated with the backflow prevention functional channel in the valve rod, and backflow high-pressure water can be ejected outwards to prevent the backflow push rod, so that the locking structure is opened.
The utility model discloses a ball valve structure with backflow prevention function, which is characterized in that a backflow prevention block is arranged at the lower end of a valve body of an electric ball valve, an external channel with the backflow prevention function is arranged at the outer wall of the backflow prevention block, so that high-pressure backflow water can be led to a valve rod, a locking structure is arranged between the valve rod and a ball body, the locking structure between the valve rod and the ball body can be opened by the backflow high-pressure water, and the opened ball body can be closed under the action of a torsion spring for closing the backflow prevention ball body.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an assembled schematic view of the anti-backflow block of the present utility model;
FIG. 3 is a schematic view of an assembly of the backflow preventer of the present utility model;
wherein:
1. upstream end of urban Water supply 2 downstream end of urban Water supply
3. Valve body 4 diaphragm control upper cavity channel
5. Diaphragm control upper cavity 6 sealing diaphragm
7. Diaphragm control lower cavity channel 8 diaphragm control lower cavity
9. Backflow-preventing function external channel of backflow-preventing function inner channel 10
11. Pressure relief channel of reversing valve core 12
13. Pressure release spring 14 valve body side face backflow prevention functional channel
15. Backflow-preventing functional channel in upper valve rod
16. Upper valve rod upper gland 17 upper valve rod sealing support sleeve
18. Backflow preventing push rod with upper valve rod and lower sealing sleeve 19
20. Ball pin 21 reset spring
22. The upper valve rod 23 prevents the reverse flow ball from closing the torsion spring.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and examples:
as shown in fig. 1-3, an electric ball valve with a backflow preventing device comprises a valve body 3, wherein a ball body for controlling fluid and a valve rod for driving the ball body are arranged in the valve body 3, a backflow preventing block is arranged at the lower end of the valve body 3 and is communicated with a liquid inlet cavity and a liquid outlet cavity of the valve body 3, and an external backflow preventing function channel 10 for guiding backflow high-pressure water to the valve rod is arranged at the outer wall of the backflow preventing block.
The ball divides the valve body 3 into a liquid inlet cavity and a liquid outlet cavity, and the rotation of the ball controls the on-off of the liquid inlet cavity and the liquid outlet cavity.
The anti-backflow block is internally provided with a diaphragm control upper cavity channel 4 and a diaphragm control lower cavity channel 7, the diaphragm control upper cavity channel 4 is communicated with the liquid inlet cavity, and the diaphragm control lower cavity channel 7 is communicated with the liquid outlet cavity.
The anti-backflow block is internally provided with an anti-backflow functional inner channel 9, and the anti-backflow functional inner channel 9 is communicated with an anti-backflow functional outer channel 10.
The backflow prevention function external channel 10 is communicated with a backflow prevention function channel 14 on the side face of the valve body in the valve body, and connecting joints for connection are formed at two ends of the backflow prevention function external channel 10.
The valve rod and the ball are provided with a locking structure, the valve body 3 is internally provided with a backflow-preventing ball closing torsion spring 23, and the backflow-preventing ball closing torsion spring 23 is connected with the ball.
An annular sealing cavity is arranged between the valve body 3 and the valve rod, an upper valve rod inner backflow preventing functional channel 15 is formed in the valve rod, and the valve rod inner backflow preventing functional channel 15 is communicated with the annular sealing cavity.
A transverse assembly channel is formed in the valve rod, a backflow preventing push rod 19 sliding along the transverse assembly channel is arranged in the transverse assembly channel, a sphere pin 20 which is inserted into the transverse assembly channel and props against the backflow preventing push rod 19 is arranged in the sphere, and the sphere pin 20 realizes the fixation of the sphere and the valve rod.
The locking structure comprises a sphere pin 20, a backflow preventing push rod 19 and a return spring 21, wherein one end of the return spring 21 is connected with a groove in the sphere, and the other end of the return spring is connected with the sphere pin 20, so that elastic ejection of the sphere pin 20 is realized.
The transverse assembly channel is communicated with the valve rod inner backflow prevention functional channel 15, backflow high-pressure water can be ejected outwards to prevent the backflow push rod 19, and the locking structure is opened.
The locating table is formed at the upper end of the backflow preventing block, the locating groove is formed at the lower end of the valve body 3, and the locating table is inserted into the locating groove to locate the backflow preventing block.
Further, a flange structure is formed in the backflow preventing block, a flange is correspondingly formed at the lower end of the valve body 3, and the flange structure are fixed through bolts.
The diaphragm control upper cavity channel 4 comprises an upper vertical section communicated with the channel in the liquid inlet cavity, the upper vertical section is communicated with the liquid inlet transverse section, the liquid inlet transverse section is communicated with the liquid inlet central section, and the liquid inlet central section is communicated with the diaphragm control upper cavity 5.
The liquid inlet transverse section adopts a punching processing mode, and one end of the liquid inlet transverse section is provided with a plug.
Correspondingly, the diaphragm control lower cavity channel 7 comprises an upper vertical section communicated with the channel in the liquid outlet cavity, the upper vertical section is communicated with a liquid outlet transverse section, the liquid outlet transverse section is communicated with a liquid outlet bypass section, and the liquid outlet bypass section is communicated with the diaphragm control lower cavity 8.
The liquid outlet transverse section adopts a punching mode, and one end of the liquid outlet transverse section is provided with a plug.
An inner cavity is formed in the backflow preventing block, a sealing membrane 6 is arranged in the backflow preventing block, and the inner cavity is divided into a membrane control upper cavity 5 and a membrane control lower cavity 8 by the sealing membrane 6.
The diaphragm control lower cavity 8 is also communicated with the backflow preventing functional inner channel 9, and the sealing diaphragm 6 can block the backflow preventing functional inner channel 9, so that the backflow preventing functional inner channel 9 is disconnected from the diaphragm control lower cavity channel 7.
The diaphragm control lower cavity 8 is internally provided with a reversing valve core 11, the diaphragm control lower cavity 8 is internally provided with a pressure relief channel 12, and a pressure relief spring 13 is arranged between the pressure relief channel 12 and the reversing valve core 11.
The reversing valve core 11 plugs the diaphragm control lower cavity 8 under the top pressure of the pressure release spring 13.
The accommodating cavity in the valve body 3 comprises an upper valve rod upper gland 16, an upper valve rod sealing support sleeve 17 and an upper valve rod lower gland 18 which are arranged in the valve body 3, and the upper valve rod upper gland 16, the upper valve rod sealing support sleeve 17 and the upper valve rod lower gland 18 are arranged from top to bottom.
The thickness of the upper valve rod upper gland 16 and the thickness of the upper valve rod lower gland 18 are the same, and the thickness of the upper valve rod sealing support sleeve 17 is smaller than the thickness of the upper valve rod upper gland 16 and the thickness of the upper valve rod lower gland 18, so that an inner concave form is formed, and the upper valve rod upper gland 16, the upper valve rod sealing support sleeve 17, the upper valve rod lower gland 18, the valve rod and the valve cover 3 are enclosed to form an accommodating cavity.
The upper valve rod sealing support sleeve 17 is provided with a through hole, and pressurized water entering the valve body side backflow prevention functional channel 14 can enter the upper valve rod inner backflow prevention functional channel 15 through the through hole.
The bottom of the upper valve rod inner backflow prevention functional channel 15 forms a plug for plugging the upper valve rod inner backflow prevention functional channel.
The transverse fitting channel guides the backflow prevention push rod 19.
The anti-backflow push rod 19 is in a step shape, a groove is formed in the outer wall of the large-diameter section of the anti-backflow push rod 19, a sealing ring is arranged in the groove, and the sealing ring is used for sliding sealing of the transverse assembly channel.
The valve rod outer wall department is provided with the spacing ring, the spacing ring is spacing to the anti-backflow push rod 19 of packing into, and simultaneously, the spacing ring is spacing to the big footpath section of anti-backflow push rod 19, avoids the roll-off of anti-backflow push rod 19.
Two sealing rings are arranged between the ball body and the valve rod.
The working process of the utility model is as follows:
the electric ball valve system with backflow preventing device is normally closed and opened, and the specific process is as follows:
the water pressure at the upstream end 1 of the urban water supply is high, and the high-pressure water flows to an anti-backflow electric ball valve with an anti-backflow device and the downstream end 2 of the urban water supply, at the moment, the pressure water pressure of the diaphragm control upper cavity channel 4 and the diaphragm control upper cavity 5 is higher than that of the diaphragm control lower cavity channel 7 and the diaphragm control lower cavity 8; the diaphragm control upper cavity 5 presses the sealing diaphragm 6, and simultaneously presses the sealing port in the backflow preventing function inner channel 9, so that the diaphragm control lower cavity channel 7 and the diaphragm control lower cavity 8 are blocked from flowing to the backflow preventing function inner channel 9, and at the moment, the backflow preventing function inner channel 9 has no pressure water;
under the action of a pressure release spring 13, a sealing port on the reversing valve core 11 blocks the backflow preventing function inner channel 9 from the backflow preventing function outer channel 10; the backflow prevention function external channel 10 is communicated with the pressure relief channel 12 through the lower sealing port of the reversing valve core 11, and at the moment, the backflow prevention function external channel 10, the backflow prevention function channel 14 at the side surface of the valve body, the backflow prevention function channel-5 in the upper valve rod and the like are in a pressureless water state. The backflow preventing push rod 19 of the system does not act, the ball pin 20 stretches into the running shaft hole of the backflow preventing push rod 19 of the upper valve rod under the action of the reset spring-1, and the upper valve rod is locked to drive the ball to rotate, so that the normal closing and opening of the valve are ensured.
Meanwhile, the rotation of the ball drives the backflow-preventing ball to close the torsion spring 23 to be screwed, and screwing torque is generated.
The utility model provides a take anti-backflow electric ball valve system of anti-backflow device, pollutes the state of occurrence of flowing backwards, and specific process is as follows:
the water pressure of the urban water supply downstream end 2 is high, the high-pressure water flows to the backflow-preventing electric ball valve 3 with the backflow-preventing device and the urban water supply upstream end 1, and at the moment, the pressure water pressure of the diaphragm control lower cavity channel 7 and the diaphragm control lower cavity 8 is higher than that of the diaphragm control upper cavity channel 4 and the diaphragm control upper cavity 5; the diaphragm control lower cavity 8 jacks up the sealing diaphragm 6, the diaphragm control lower cavity 8 is communicated with the backflow prevention function inner channel 9, high-pressure water is generated, the upper sealing port of the pressing reversing valve core is opened, the lower sealing port is closed, high-pressure water in the backflow prevention function inner channel 9 flows to the backflow prevention function outer channel 10 and the backflow prevention function channel 14 on the side face of the valve body, meanwhile, through the upper sealing sleeve of the upper valve rod, the upper valve rod supporting sleeve with a plurality of flow-through small holes and the sealing sleeve of the lower sealing sleeve of the upper valve rod, the high-pressure water flows to the backflow prevention function channel 15 in the upper valve rod, the high-pressure water pushes the backflow prevention push rod 19, the ball pin-0 is pushed to exit from the running shaft hole of the upper valve rod, and locking of the ball body and the upper valve rod is avoided.
At this time, the anti-backflow ball body closing torsion spring 23 is under the condition of resetting the screwing moment, so that the ball body rotates under the action of starting the anti-backflow ball body closing torsion spring 23 by resetting the screwing moment and the pressure of backflow water, and the sealing port is closed freely, so that the anti-backflow function is achieved.
The utility model discloses a ball valve structure with backflow prevention function, which is characterized in that a backflow prevention block is arranged at the lower end of a valve body of an electric ball valve, an external channel with the backflow prevention function is arranged at the outer wall of the backflow prevention block, so that high-pressure backflow water can be led to a valve rod, a locking structure is arranged between the valve rod and a ball body, the locking structure between the valve rod and the ball body can be opened by the backflow high-pressure water, and the opened ball body can be closed under the action of a torsion spring for closing the backflow prevention ball body.
Claims (5)
1. The utility model provides an electric ball valve of anti-backflow device in area, includes valve body (3), be provided with in valve body (3) and carry out fluid control's spheroid and carry out driven valve rod to the spheroid, its characterized in that: the anti-backflow block is arranged at the lower end of the valve body (3), and is communicated with a liquid inlet cavity and a liquid outlet cavity of the valve body (3), and an anti-backflow function external channel (10) for guiding high-pressure backflow water to the valve rod is arranged at the outer wall of the anti-backflow block;
an annular sealing cavity is formed between the valve body (3) and the valve rod, an upper valve rod inner backflow preventing functional channel (15) is formed in the valve rod, and the valve rod inner backflow preventing functional channel (15) is communicated with the annular sealing cavity;
a transverse assembly channel is formed in the valve rod, a backflow preventing push rod (19) sliding along the transverse assembly channel is arranged in the transverse assembly channel, a sphere pin (20) which is inserted into the transverse assembly channel and props against the backflow preventing push rod (19) is arranged in the sphere, and the sphere pin (20) realizes the fixation of the sphere and the valve rod;
a locking structure is arranged between the valve rod and the ball body, a backflow-preventing ball body closing torsion spring (23) is arranged in the valve body (3), and the backflow-preventing ball body closing torsion spring (23) is connected with the ball body;
the locking structure comprises a sphere pin (20), a backflow preventing push rod (19) and a return spring (21), wherein one end of the return spring (21) is connected with a groove in the sphere, and the other end of the return spring is connected with the sphere pin (20) to realize elastic ejection of the sphere pin (20);
the transverse assembly channel is communicated with the backflow prevention functional channel (15) in the valve rod, and backflow high-pressure water can be ejected outwards to prevent the backflow push rod (19), so that the locking structure is opened.
2. The electric ball valve with the backflow preventing device according to claim 1, wherein: the ball divides the valve body (3) into a liquid inlet cavity and a liquid outlet cavity, and the rotation of the ball controls the on-off of the liquid inlet cavity and the liquid outlet cavity.
3. The electric ball valve with the backflow preventing device according to claim 2, wherein: the anti-backflow block is internally provided with a diaphragm control upper cavity channel (4) and a diaphragm control lower cavity channel (7), the diaphragm control upper cavity channel (4) is communicated with the liquid inlet cavity, and the diaphragm control lower cavity channel (7) is communicated with the liquid outlet cavity.
4. The electric ball valve with backflow preventer according to claim 3, wherein: the anti-backflow block is internally provided with an anti-backflow functional inner channel (9), and the anti-backflow functional inner channel (9) is communicated with an anti-backflow functional outer channel (10).
5. The electric ball valve with the backflow preventing device according to claim 4, wherein: the anti-backflow function external channel (10) is communicated with the anti-backflow function channel (14) on the side face of the valve body in the valve body, and connecting joints for connection are formed at two ends of the anti-backflow function external channel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220840764.1U CN219366859U (en) | 2022-04-13 | 2022-04-13 | Electric ball valve with backflow preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220840764.1U CN219366859U (en) | 2022-04-13 | 2022-04-13 | Electric ball valve with backflow preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366859U true CN219366859U (en) | 2023-07-18 |
Family
ID=87116625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220840764.1U Active CN219366859U (en) | 2022-04-13 | 2022-04-13 | Electric ball valve with backflow preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366859U (en) |
-
2022
- 2022-04-13 CN CN202220840764.1U patent/CN219366859U/en active Active
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