CN210950073U - Differential pressure bypass balance valve - Google Patents
Differential pressure bypass balance valve Download PDFInfo
- Publication number
- CN210950073U CN210950073U CN201921791151.8U CN201921791151U CN210950073U CN 210950073 U CN210950073 U CN 210950073U CN 201921791151 U CN201921791151 U CN 201921791151U CN 210950073 U CN210950073 U CN 210950073U
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- valve
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- cover
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000007788 liquid Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a pressure difference bypass balance valve, which is characterized in that the pressure difference bypass balance valve comprises a valve body, a water inlet channel, a water outlet channel, a valve seat, a valve cover and a valve rod, wherein the lower end of the valve rod is provided with a valve clack, the valve cover is connected with a piston in a sliding way, the piston is provided with a perforation, the valve rod is sleeved with a spring, a water outlet is arranged in the valve cover, when the valve clack is abutted against the valve seat and the pressure in a cavity of the valve cover is equal to the pressure in the water inlet channel, the piston can cover and block the water outlet, a water outlet pipeline is arranged between the water outlet and the water outlet channel, the valve rod is provided with a sliding part, the upper end and the lower end of the sliding part are both provided with limit rings, the two sides of the top of the valve cover are, and a first ball valve is arranged on the second external pipeline, and the differential pressure bypass balance valve can discharge residual water in the control cavity out of the control cavity.
Description
Technical Field
The utility model relates to the technical field of valves, more specifically say, it relates to a pressure differential bypass balanced valve.
Background
The pressure difference bypass balance valve is a valve which does not need external energy and can automatically adjust by self pressure change, is suitable for household metering or automatic control systems, and has a double-valve structure and a compact structure.
However, in practical use of the existing differential pressure bypass balance valve, a certain amount of water is accumulated in an upper cavity of a control cavity and cannot be discharged in time, if the valve is not used for a long time, the residual water in the control valve is deteriorated and generates stink, the whole piece of water is polluted when the valve is used next time, the condition is very bad, and the influence is profound.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims to provide a pressure differential bypass balanced valve, this pressure differential bypass balanced valve can be with the control intracavity remaining log raft discharge outside the control chamber.
In order to achieve the above purpose, the utility model provides a following technical scheme: a differential pressure bypass balance valve comprises a valve body, a water inlet channel and a water outlet channel which are communicated with each other and arranged at the left end and the right end of the valve body, a valve seat arranged between the water inlet channel and the water outlet channel, a valve cover arranged at the top of the valve body in a sealing manner, and a valve rod arranged in the valve body, wherein the lower end of the valve rod is provided with a valve clack which can form a sealing opening and closing with the valve seat, and the upper end of the valve rod can be inserted into a cavity of the valve cover;
the valve cover is internally connected with a piston in a sliding manner, the piston is used for separating the water outlet channel from a cavity of the valve cover, a through hole for the valve rod to pass through is formed in the piston, a spring is sleeved on the valve rod, two ends of the spring are respectively pushed against the valve clack and the piston, a water drainage opening is formed in the valve cover, when the valve clack is abutted against the valve seat and the pressure in the cavity of the valve cover is equal to the pressure in the water inlet channel, the piston can cover and block the water drainage opening, and a water drainage pipeline is arranged;
the valve rod is provided with a sliding part for the piston to slide on the valve rod, the outer diameter of the sliding part is matched with the inner diameter of the through hole, when the pressure in the valve cover cavity is larger than the pressure in the water inlet channel, the piston can move towards the valve clack along the sliding part, so that water in the valve cover cavity can be discharged from the water outlet, the upper end and the lower end of the sliding part are both provided with limiting rings for limiting the sliding stroke of the piston, and the outer diameter of each limiting ring is larger than the inner diameter of the through hole;
the both sides at valve gap top are provided with water inlet and delivery port respectively, be provided with first external pipeline between inhalant canal and the water inlet, be provided with the needle valve of the first external pipeline liquid flow of control on the first external pipeline, be provided with the external pipeline of second between delivery port and the exhalant canal, be provided with the first ball valve of the external pipeline liquid flow of control second on the external pipeline of second.
The utility model discloses further set up to: the valve cover is in threaded connection with the valve body through a plurality of locking bolts.
The utility model discloses further set up to: and sealing rings are arranged between the piston and the valve cover and between the sliding part and the through hole.
The utility model discloses further set up to: and a sealing gasket is arranged between the valve clack and the valve seat.
The utility model discloses further set up to: the valve clack is "T" word structure setting, the lateral wall of valve clack lower extreme can with the inside wall butt of disk seat, and the valve rod can promote the piston and begin to separate with the disk seat and open when upwards moving.
The utility model discloses further set up to: and a fourth ball valve for controlling the opening and closing of the drainage pipeline is arranged on the drainage pipeline.
The utility model discloses further set up to: be provided with the first manometer that detects the first external pipeline liquid flow of flowing through between needle valve and the inhalant canal, be provided with the second ball valve between first manometer and the first external pipeline.
The utility model discloses further set up to: and a second pressure gauge for detecting the flow of liquid flowing through the second external connecting pipeline is arranged between the first ball valve and the water outlet channel, and a third ball valve is arranged between the second pressure gauge and the external connecting pipeline.
To sum up, the utility model discloses following beneficial effect has: when liquid enters the water inlet channel of the valve body, the liquid flows to the water inlet through the first external pipeline and finally enters the inner cavity of the valve cover, so that the pressure in the inner cavity of the valve cover is kept consistent with the pressure in the water inlet channel, and the valve clack and the valve seat are still in a sealing state; controlling the first ball valve to enable liquid in the valve cover cavity to flow from the water outlet to the water outlet channel through the second external connecting pipeline, wherein the pressure in the valve cover cavity is smaller than the inlet pressure of the water inlet channel, so that the piston moves upwards and drives the valve clack to be separated from the valve seat through the valve rod, and the valve is opened; when the water inlet channel stops feeding water, a certain amount of accumulated water is left in the valve cover cavity, so that the pressure of the valve cover cavity is larger than that of the water inlet channel, the piston moves downwards along the sliding part and compresses the spring under the conditions of pressure difference and water gravity, the liquid in the valve cover cavity exposed by the water outlet flows into the water outlet channel through the water outlet and the water outlet pipeline, when all the liquid in the valve cover cavity flows out of the water outlet pipeline, the pressure difference is restored to be balanced, and the piston is enabled to be ready for the next work under the action of the spring; the design of the needle valve and the first ball valve can adjust the inflow velocity and the outflow velocity, thereby achieving the effect of controlling the pressure difference; through the design of the spacing ring at the both ends of the sliding part, the valve rod can be driven when the piston moves upwards and the valve rod can not be separated, the water quantity is too much when the piston moves downwards, the water pressure difference is too large, the piston excessively slides downwards, the phenomenon that the piston slides into the valve body appears, the design can ensure that water is not remained after the work in the valve cover cavity is finished, and the phenomenon that the water quality is abnormal can not occur even if the valve cover cavity works for a long time again.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a differential pressure bypass balancing valve.
Reference numerals: 1. a valve body; 11. a water inlet channel; 12. a water outlet channel; 13. a valve seat; 14. a valve stem; 141. a limiting ring; 142. a sliding part; 15. a valve flap; 16. a spring; 17. a gasket; 2. a valve cover; 21. a piston; 211. perforating; 22. a water inlet; 23. a water outlet; 24. a water discharge opening; 241. a water drainage pipe; 242. a fourth ball valve; 25. locking the bolt; 26. a seal ring; 27. a valve cover cavity; 3. a first external pipe; 31. a first pressure gauge; 32. a needle valve; 33. a second ball valve; 4. a second external pipeline; 41. a second pressure gauge; 42. a first ball valve; 43. and a third ball valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1, in order to achieve the above object, the present invention provides the following technical solutions: a pressure difference bypass balance valve comprises a valve body 1, a water inlet channel 11 and a water outlet channel 12 which are communicated with each other and arranged at the left end and the right end of the valve body 1, a valve seat 13 arranged between the water inlet channel 11 and the water outlet channel 12, a valve cover 2 which is hermetically arranged at the top of the valve body 1, and a valve rod 14 arranged in the valve body 1, wherein the lower end of the valve rod 14 is provided with a valve clack 15 which can form a sealed opening and closing with the valve seat 13, and the upper end of the valve rod 14 can be inserted into a valve cover cavity 27;
a piston 21 for separating the water outlet channel 12 from the valve cover cavity 27 is connected in the valve cover 2 in a sliding manner, a through hole 211 for the valve rod 14 to pass through is formed in the piston 21, a spring 16 is sleeved on the valve rod 14, two ends of the spring 16 are respectively pushed against the valve clack 15 and the piston 21, a water drainage opening 24 is formed in the valve cover 2, when the valve clack 15 is abutted against the valve seat 13 and the pressure in the valve cover cavity 27 is equal to the pressure in the water inlet channel 11, the piston 21 can cover and block the water drainage opening 24, and a water drainage pipeline 241 is arranged between the water drainage opening 24;
the valve rod 14 is provided with a sliding part 142 for the piston 21 to slide on the valve rod 14, the outer diameter of the sliding part 142 is matched with the inner diameter of the through hole 211, when the pressure in the bonnet cavity 27 is larger than the pressure in the water inlet channel 11, the piston 21 can move towards the valve clack 15 along the sliding part 142, so that the water in the bonnet cavity 27 can be discharged from the drain opening 24, the upper end and the lower end of the sliding part 142 are both provided with limiting rings 141 for limiting the sliding stroke of the piston 21, and the outer diameter of each limiting ring 141 is larger than the inner diameter of the through hole 211;
the two sides of the top of the valve cover 2 are respectively provided with a water inlet 22 and a water outlet 23, a first external pipeline 3 is arranged between the water inlet channel 11 and the water inlet 22, a needle valve 32 for controlling the liquid flow of the first external pipeline 3 is arranged on the first external pipeline 3, a second external pipeline 4 is arranged between the water outlet 23 and the water outlet channel 12, and a first ball valve 42 for controlling the liquid flow of the second external pipeline 4 is arranged on the second external pipeline 4.
When liquid enters the water inlet channel 11 of the valve body 1, the liquid flows to the water inlet 22 through the first external pipeline 3 and finally enters the valve cover cavity 27, so that the pressure in the valve cover cavity 27 is kept consistent with the pressure in the water inlet channel 11, and the valve clack 15 and the valve seat 13 are still in a sealing state; controlling the first ball valve 42 to make the liquid in the bonnet cavity 27 flow from the water outlet 23 to the water outlet channel 12 through the second external connecting channel 4, the pressure in the bonnet cavity 27 is lower than the inlet pressure of the water inlet channel 11, so that the piston 21 moves upwards and the valve rod 14 drives the valve clack 15 to separate from the valve seat 13, and the valve is opened; when the water inlet channel 11 stops feeding water, because a certain amount of accumulated water is left in the valve cover cavity 27, the pressure of the valve cover cavity 27 is larger than that of the water inlet channel 11, the piston 21 moves downwards along the sliding part 142 under the conditions of pressure difference and water gravity and compresses the spring 16, so that the water outlet 24 is exposed out of the liquid in the valve cover cavity 27, and the liquid flows into the water outlet channel 12 through the water outlet 24 and the water drain pipeline 241, when all the liquid in the valve cover cavity 27 flows out of the water drain pipeline 241, the pressure difference is balanced, and the piston 21 is enabled to restore to work at the next time under the action of the spring 16; the design of the needle valve 32 and the first ball valve 42 can adjust the inflow and outflow flow rates, thereby achieving the function of controlling the pressure difference; through the design of the spacing ring 141 at the both ends of the sliding part 142, the valve rod 14 can be driven and the valve rod 14 can not be separated when the piston 21 moves upwards, the water amount is too much when the piston 21 moves downwards, the water pressure difference is too large to cause the piston 21 to slide downwards excessively, the phenomenon that the piston 21 slides to the interior of the valve body 1 appears, the design can ensure that water does not remain in the valve cover cavity 27 after the work is finished, and the phenomenon that the water quality is abnormal can not occur even if the valve cover cavity is stored for a long time to work again.
The valve cover 2 is in threaded connection with the valve body 1 through a plurality of locking bolts 25, and the valve cover is firm to install and convenient to detach.
The sealing rings 26 are arranged between the piston 21 and the valve cover 2 and between the sliding part 142 and the through hole 211, and the design effectively prevents water in the valve cover cavity 27 from entering the water outlet channel 12 through the gap of the piston 21, so that the effect that the pressure difference cannot be accurately controlled is caused.
A sealing gasket 17 is arranged between the valve clack 15 and the valve seat 13, and the design ensures the sealing property between the water inlet channel 11 and the water outlet channel 12 and prevents the liquid in the water inlet channel 11 from directly flowing into the water outlet channel 12.
Valve clack 15 is "T" word structure setting, the lateral wall of valve clack 15 lower extreme can with the inside wall butt of disk seat 13, valve clack 15 and disk seat 13 begin to separate and open when valve rod 14 can promote piston 21 rebound, this design prevents under high pressure service environment, the water inflow of inhalant canal 11 increases in the twinkling of an eye, can not make the pressure in valve gap cavity 27 keep unanimous with the pressure in inhalant canal 11 the very first time, when valve gap cavity 27 internal pressure is far less than inhalant canal 11 internal pressure, make valve clack 15 further rebound earlier, spacing ring 141 and piston 21 butt up to moving to the portion 142 lower extreme that slides, spring 16 atress compression, direct interact between piston 21 and the valve clack 15, thereby valve clack 15 and disk seat 13 still are in encapsulated situation and have certain buffer function, guarantee can not break away valve clack 15 in the twinkling of an eye.
The drain pipe 241 is provided with a fourth ball valve 242 for controlling the opening and closing of the drain pipe 241, and this design enables the opening and closing of the drain pipe 241 to be manually controlled, so that if the product is used for a short time and is not stored for a long time, the drain pipe 241 can be closed, and when the product needs to be stored, the residual water in the valve cover cavity 27 can be discharged through the drain pipe 241.
A first pressure gauge 31 for detecting the liquid flow flowing through the first external pipeline 3 is arranged between the needle valve 32 and the water inlet channel 11, a second ball valve 33 is arranged between the first pressure gauge 31 and the first external pipeline 3, and whether the pressure condition of the liquid in the first external pipeline 3 is detected or not can be selected independently through the matching use of the first pressure gauge 31 and the second ball valve 33.
A second pressure gauge 41 for detecting the flow of the liquid flowing through the second external connection pipeline 4 is arranged between the first ball valve 42 and the water outlet channel 12, a third ball valve 43 is arranged between the second pressure gauge 41 and the external connection pipeline, and whether the pressure condition of the liquid in the second external connection pipeline 4 is detected or not can be selected automatically through the matching use of the second pressure gauge 41 and the third ball valve 43.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A differential pressure bypass balance valve is characterized in that: the valve comprises a valve body (1), a water inlet channel (11) and a water outlet channel (12) which are communicated with each other and are arranged at the left end and the right end of the valve body (1), a valve seat (13) arranged between the water inlet channel (11) and the water outlet channel (12), a valve cover (2) which is hermetically arranged at the top of the valve body (1), and a valve rod (14) arranged in the valve body (1), wherein the lower end of the valve rod (14) is provided with a valve clack (15) which can form a sealed opening and closing with the valve seat (13), and the upper end of the valve rod (14) can be inserted into a valve cover cavity (;
a piston (21) for separating the water outlet channel (12) from the valve cover cavity (27) is connected in the valve cover (2) in a sliding manner, a through hole (211) for the valve rod (14) to penetrate through is formed in the piston (21), a spring (16) is sleeved on the valve rod (14), two ends of the spring (16) are respectively pushed against the valve clack (15) and the piston (21), a water drainage opening (24) is formed in the valve cover (2), when the valve clack (15) is abutted against the valve seat (13) and the pressure in the valve cover cavity (27) is equal to the pressure in the water inlet channel (11), the piston (21) can cover and block the water drainage opening (24), and a water drainage pipeline (241) is arranged between the water drainage opening (24) and the water outlet channel (12);
the valve rod (14) is provided with a sliding part (142) for the piston (21) to slide on the valve rod (14), the outer diameter of the sliding part (142) is matched with the inner diameter of the through hole (211), when the pressure in the valve cover cavity (27) is larger than the pressure in the water inlet channel (11), the piston (21) can move towards the valve clack (15) along the sliding part (142) to enable the water in the valve cover cavity (27) to be discharged from the water outlet (24), the upper end and the lower end of the sliding part (142) are respectively provided with a limiting ring (141) for limiting the sliding stroke of the piston (21), and the outer diameter of the limiting ring (141) is larger than the inner diameter of the through hole (211);
the utility model discloses a valve structure, including valve gap (2), valve gap (2) top, inlet (22) and delivery port (23) are provided with respectively to both sides at valve gap (2) top, be provided with first external pipeline (3) between inhalant canal (11) and water inlet (22), be provided with needle valve (32) of the first external pipeline of control (3) liquid flow on first external pipeline (3), be provided with second external pipeline (4) between delivery port (23) and exhalant canal (12), be provided with first ball valve (42) of the external pipeline of control second (4) liquid flow on second external pipeline (4).
2. The differential pressure bypass balancing valve of claim 1, wherein: the valve cover (2) is in threaded connection with the valve body (1) through a plurality of locking bolts (25).
3. The differential pressure bypass balancing valve of claim 1, wherein: and sealing rings (26) are arranged between the piston (21) and the valve cover (2) and between the sliding part (142) and the through hole (211).
4. The differential pressure bypass balancing valve of claim 1, wherein: a sealing gasket (17) is arranged between the valve clack (15) and the valve seat (13).
5. The differential pressure bypass balancing valve of claim 1, wherein: the valve clack (15) are arranged in a T-shaped structure, the outer side wall of the lower end of the valve clack (15) can be abutted to the inner side wall of the valve seat (13), and the valve clack (15) and the valve seat (13) begin to be separated and opened when the valve rod (14) can push the piston (21) to move upwards.
6. The differential pressure bypass balancing valve of claim 1, wherein: and a fourth ball valve (242) for controlling the opening and closing of the drainage pipeline (241) is arranged on the drainage pipeline (241).
7. The differential pressure bypass balancing valve of claim 1, wherein: be provided with between needle valve (32) and inhalant canal (11) and detect first external pipeline (3) flow of liquid's of flowing through first manometer (31), be provided with second ball valve (33) between first manometer (31) and first external pipeline (3).
8. The differential pressure bypass balancing valve of claim 1, wherein: a second pressure gauge (41) for detecting the flow of liquid flowing through the second external pipeline (4) is arranged between the first ball valve (42) and the water outlet channel (12), and a third ball valve (43) is arranged between the second pressure gauge (41) and the external pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791151.8U CN210950073U (en) | 2019-10-23 | 2019-10-23 | Differential pressure bypass balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791151.8U CN210950073U (en) | 2019-10-23 | 2019-10-23 | Differential pressure bypass balance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210950073U true CN210950073U (en) | 2020-07-07 |
Family
ID=71397136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921791151.8U Expired - Fee Related CN210950073U (en) | 2019-10-23 | 2019-10-23 | Differential pressure bypass balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210950073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396478A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Self-operated stop valve |
-
2019
- 2019-10-23 CN CN201921791151.8U patent/CN210950073U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396478A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Self-operated stop valve |
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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: 20200707 |