CN220770235U - Vacuum drainage pressure stabilizing valve - Google Patents
Vacuum drainage pressure stabilizing valve Download PDFInfo
- Publication number
- CN220770235U CN220770235U CN202321579110.9U CN202321579110U CN220770235U CN 220770235 U CN220770235 U CN 220770235U CN 202321579110 U CN202321579110 U CN 202321579110U CN 220770235 U CN220770235 U CN 220770235U
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- China
- Prior art keywords
- negative pressure
- vacuum drainage
- vacuum
- cavity
- valve
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model discloses a vacuum drainage pressure stabilizing valve, which comprises a valve body with an inner cavity and a triggering mechanism, wherein the bottom of the valve body is provided with a normal pressure port for leading to the atmosphere, the waist is provided with a negative pressure port, and the top is provided with an internal thread through hole; the triggering mechanism comprises a sealing body component, a compression spring, a top plate and an ejector rod, wherein the sealing body component is arranged in the inner cavity, the inner cavity is divided into a normal pressure cavity and a negative pressure cavity, the normal pressure cavity is communicated with a normal pressure port, the negative pressure cavity is communicated with a negative pressure port, and a pressure gauge is arranged in parallel with the negative pressure port and is communicated with the negative pressure cavity. The negative pressure port is connected in parallel with the vacuum drainage pipeline, and when the vacuum degree at an access point in the vacuum drainage pipeline is higher than the set opening pressure, the vacuum drainage pressure stabilizing valve is in a closed state; when the vacuum degree at the access point is lower than the set opening pressure, the vacuum drainage pressure stabilizing valve is opened. The utility model has the advantages of pure mechanical structure, no need of power connection, no maintenance, long service life, strong applicability and simple and reliable structure.
Description
Technical Field
The utility model relates to the technical field of control valves, in particular to a vacuum drainage pressure stabilizing valve for a vacuum drainage system pipeline.
Background
It is known that in a vacuum drainage system, not only the vacuum degree in a pipeline is lost due to pipe fittings such as a valve, an elbow and a reducing pipe of a vacuum drainage pipeline, but also the length of a linear pipeline is in a proportional relation with the vacuum degree loss in the pipeline due to the existence of resistance of the inner wall of the pipeline, the vacuum degree loss of the pipeline is about 19Pa per meter, that is, when the vacuum degree of a vacuum pump station is-70 KPa, the vacuum degree loss of the pipe fittings is not counted, a vacuum pipe with the diameter of 160 mm with the length of 2 km is used, the vacuum degree of the tail end is about-32 KPa, and water columns with the height of 3.2 meters at most are sucked. At present, the vacuum drainage technology is widely applied to scattered sewage collection in rural areas and scenic spots, and is characterized by wide area, scattered collection points, Z-shaped arrangement of pipelines and the like, and plunger-shaped water columns are inevitably arranged in the pipelines, so that the tail end vacuum degree is affected, the suction elevation height is further reduced, and sewage in the tail end vacuum lifter cannot be pumped and discharged. The traditional solution is to either increase manual ball valve blowdown, or set up the cable power supply and adopt pressure sensor + the automatic blowdown of mode of solenoid valve for the mediation, avoid producing plunger form water column loss vacuum in the pipeline, these two schemes can both show the investment cost who increases vacuum drainage system.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the vacuum drainage pressure stabilizing valve with a pure mechanical structure, which has the advantages of no need of power connection, maintenance-free, long service life, strong applicability, simplicity and reliability, and overcomes the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the vacuum drainage pressure stabilizing valve comprises a valve body with an inner cavity and a triggering mechanism, wherein the bottom of the valve body is provided with a normal pressure port for leading to the atmosphere, the waist is provided with a negative pressure port, and the top is provided with an internal thread through hole; the triggering mechanism comprises a sealing body assembly, a compression spring, a top plate and a top rod, wherein the sealing body assembly is arranged in the inner cavity and is divided into a normal pressure cavity and a negative pressure cavity, the normal pressure cavity is communicated with the normal pressure port, and the negative pressure cavity is communicated with the negative pressure port.
Further, the compression spring is arranged in the negative pressure cavity, two ends of the compression spring are respectively connected with the lower side of the top plate and the upper side of the sealing body assembly, the upper side of the top plate is propped against the bottom of the ejector rod, and the ejector rod is fixed on the internal thread through hole of the valve body through threaded connection.
Further, a plurality of vertical guide grooves are formed in the circumferential direction of the top of the negative pressure cavity, and the top plate moves up and down along the guide grooves under the action of the compression springs and the ejector rods so as to adjust the compression distance of the compression springs.
Further, the sealing body component comprises a pressing block, a rubber pad and a supporting plate from top to bottom and is fixed through bolts.
Further, the rubber pad is made of rubber or silica gel.
Further, the negative pressure cavity is provided with an annular boss, the normal pressure cavity is provided with a plurality of protruding points in an annular way, and the sealing body component moves up and down under the action of negative pressure and the compression spring, so that the negative pressure cavity is communicated with or separated from the normal pressure port.
Further, the valve body comprises a valve cover and a valve seat, the valve cover is connected with the valve seat through bonding, threads or buckles, the valve cover is a horn-shaped tee joint, the valve seat is hollow horn-shaped, the negative pressure port and the internal thread through hole are formed in the valve cover, and the normal pressure port is formed in the valve seat.
Further, the negative pressure port is provided with a pressure gauge in parallel connection and communicated with the negative pressure cavity.
Further, the diameter of the vacuum drainage pressure stabilizing valve is far smaller than that of the vacuum drainage pipeline, and the negative pressure port is connected with the vacuum drainage pipeline in parallel.
Further, the opening vacuum degree set by the vacuum drainage pressure stabilizing valve is smaller than the maximum vacuum degree in the vacuum drainage pipeline access point.
The beneficial effects are that: the utility model uses the upward pressure generated by the pressure difference between the upper surface and the lower surface of the sealing body component to resist the downward elasticity of the compression spring to the sealing body component, the elasticity of the compression spring to the sealing body component can be adjusted by rotating the ejector rod, when the vacuum degree of the access point is lower than a set value, the upward pressure generated by the pressure difference to the sealing body component is lower than the elasticity, the sealing body component moves downward under the action of the elasticity, the supporting plate is abutted against the salient point of the normal pressure cavity, the utility model is in an open state, the outside atmosphere is communicated with the vacuum drainage pipeline, the outside air enters the vacuum drainage pipeline under the action of the atmospheric pressure, and the plunger-shaped water column in the vacuum drainage pipeline between the access point and the vacuum sewage tank is pushed to the vacuum sewage tank, thereby dredging the section of the vacuum drainage pipeline and improving the vacuum degree in the pipe; when the vacuum degree of the access point is higher than a set value, the upward pressure generated by the pressure difference on the sealing body component is larger than the elastic force, the sealing body component moves upward under the action of the pressure, and the rubber pad is pressed on the annular boss of the negative pressure cavity to form a sealing surface.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a schematic perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of the present utility model in a closed state.
Fig. 3 is a schematic cross-sectional view of the present utility model in an opened state.
Fig. 4 is a schematic perspective enlarged structure of the valve cover.
Fig. 5 is a schematic perspective enlarged structure of the valve seat.
Detailed Description
Referring to fig. 1-5, a vacuum drainage pressure stabilizing valve comprises a valve body with an inner cavity and a triggering mechanism, wherein the bottom of the valve body is provided with an atmospheric pressure port 202 for leading to the atmosphere, the waist is provided with a negative pressure port 302, and the top is provided with an internal thread through hole 303; the trigger mechanism comprises a seal body assembly, a compression spring 7, a top plate 6 and a push rod 4, wherein the seal body assembly is arranged in the inner cavity, the inner cavity is divided into a normal pressure cavity 204 and a negative pressure cavity 304, the normal pressure cavity is communicated with a normal pressure port 202, and the negative pressure cavity is communicated with a negative pressure port 302; the valve body comprises a valve cover 301 and a valve seat 201, the valve cover is connected with the valve seat through bonding, threads or buckles, the valve cover is a horn-shaped tee joint, the valve seat is hollow horn-shaped, a negative pressure port 302 and an internal thread through hole 303 are arranged on the valve cover, and a normal pressure port 202 is arranged on the valve seat.
The sealing body component comprises a pressing block 8, a rubber cushion 9 and a supporting plate 10 from top to bottom, and is fixed through bolts, and the rubber cushion is made of rubber or silica gel; the negative pressure cavity 304 is also provided with an annular boss 306, the normal pressure cavity 204 is provided with a plurality of protruding points 203 in a circumferential direction, the negative pressure port 302 is connected with the vacuum drainage pipeline 1 in parallel, and the sealing body component moves up and down under the action of the negative pressure and compression spring 7 so as to enable the negative pressure cavity 304 to be communicated or separated from the normal pressure port 202.
A plurality of vertical guide grooves 307 are formed in the circumferential direction of the top of the negative pressure cavity 304, and the top plate 6 can move up and down along the guide grooves under the action of the compression spring 7 and the ejector rod by rotating the ejector rod 4 so as to adjust the compression distance of the compression spring. When the ejector rod 4 is rotated, the opening pressure of the utility model can be set by observing the pointer reading of the pressure gauge 5 which is arranged in parallel at the negative pressure port 302 and communicated with the negative pressure cavity 304 and the air inlet action of the normal pressure port 202, and when the ejector rod is used, the ejector rod is arranged at different positions of a vacuum drainage pipeline, and the set opening pressure is different and is set according to actual conditions.
The opening and closing principle of the application is as follows: as shown in fig. 1, in the application, the negative pressure port 302 of the present utility model is connected in parallel with the vacuum drainage pipe 1, and the normal pressure port 202 is connected to a normal pressure source, which may be the atmosphere. When the vacuum degree at the position of the inner opening of the vacuum drainage pipeline 1 is higher than the set opening pressure, the upward pressure generated by the pressure difference between the upper surface and the lower surface of the sealing body component is larger than the downward elasticity of the compression spring 7 on the sealing body component, the compression length of the compression spring is increased, the sealing body component is connected with the valve cover 301, the rubber pad 9 is pressed on the boss 306 to form a sealing surface, the negative pressure cavity 304 is isolated from the atmosphere, and the vacuum drainage pressure stabilizing valve is in a closed state; when plunger-shaped water column appears at the front end of the vacuum drainage pipeline 1, the vacuum degree in the pipeline at the access point of the vacuum drainage pressure stabilizing valve is lower than the set opening pressure, the upward pressure generated by the pressure difference between the upper surface and the lower surface of the sealing body component is smaller than the downward elasticity of the compression spring 7 on the sealing body component, the compression length of the compression spring is reduced, the sealing body component is connected with the valve seat 201, the supporting plate 10 is abutted on the salient point 203, the negative pressure cavity 304 is communicated with the atmosphere, the vacuum drainage pressure stabilizing valve is in an opening state, under the action of the atmospheric pressure, external air sequentially enters the vacuum drainage pipeline through the normal pressure port 202, the normal pressure cavity 204, the negative pressure cavity 304 and the negative pressure port 302, the vacuum degree in the pipeline at the access point is reduced, the pressure difference between the access point and the vacuum sewage tank is increased at two ends of the plunger-shaped water column in the vacuum drainage pipeline, and the plunger-shaped water column is pushed to the vacuum sewage tank by the pressure, so that the vacuum drainage pipeline is dredged, and the vacuum drainage pipeline is greatly dredged, the vacuum sewage is discharged, after the vacuum drainage pipeline is dredged, the vacuum degree is far smaller than the air discharged by the vacuum pump station, the vacuum degree in the vacuum sewage pipeline under the condition, the vacuum degree is in the vacuum sewage pipeline, and is in the opening state under the condition, the vacuum degree, and the vacuum degree is gradually increased and the vacuum degree and is restored to the initial pressure.
Claims (10)
1. The utility model provides a vacuum drainage steady voltage valve, includes valve body and trigger mechanism that has the inner chamber, characterized by: the bottom of the valve body is provided with an atmospheric pressure port (202) for leading to the atmosphere, the waist is provided with a negative pressure port (302), and the top is provided with an internal thread through hole (303); the triggering mechanism comprises a sealing body assembly, a compression spring (7), a top plate (6) and a top rod (4), wherein the sealing body assembly is arranged in the inner cavity and is divided into a normal pressure cavity (204) and a negative pressure cavity (304), the normal pressure cavity is communicated with the normal pressure port (202), and the negative pressure cavity is communicated with the negative pressure port (302).
2. The vacuum drainage pressure stabilizing valve according to claim 1, wherein: the compression spring (7) is arranged in the negative pressure cavity (304), two ends of the compression spring are respectively connected with the lower side of the top plate (6) and the upper side of the sealing body assembly, the upper side of the top plate is propped against the bottom of the ejector rod (4), and the ejector rod is fixed on an internal thread through hole (303) of the valve body through threaded connection.
3. The vacuum drain regulator valve according to claim 2, wherein: a plurality of vertical guide grooves (307) are formed in the circumferential direction of the top of the negative pressure cavity (304), and the top plate (6) moves up and down along the guide grooves under the action of the compression springs (7) and the ejector rods (4) so as to adjust the compression distance of the compression springs.
4. The vacuum drainage pressure stabilizing valve according to claim 1, wherein: the sealing body assembly comprises a pressing block (8), a rubber pad (9) and a supporting plate (10) from top to bottom and is fixed through bolts.
5. The vacuum drainage pressure stabilizing valve according to claim 4, wherein: the rubber pad (9) is made of rubber or silica gel.
6. The vacuum drainage pressure stabilizing valve according to claim 5, wherein: the negative pressure cavity (304) is provided with an annular boss (306), the normal pressure cavity (204) is provided with a plurality of protruding points (203) in an annular way, and the sealing body component moves up and down under the action of the negative pressure and the compression spring (7) so as to enable the negative pressure cavity to be communicated with or separated from the normal pressure port (202).
7. The vacuum drainage pressure stabilizing valve according to claim 1, wherein: the valve body comprises a valve cover (301) and a valve seat (201), the valve cover is connected with the valve seat through bonding, threads or buckles, the valve cover is a horn-shaped tee joint, the valve seat is hollow horn-shaped, the negative pressure port (302) and the internal thread through hole (303) are formed in the valve cover, and the normal pressure port (202) is formed in the valve seat.
8. The vacuum drainage pressure stabilizing valve according to claim 1, wherein: the negative pressure port (302) is provided with a pressure gauge (5) in parallel connection and is communicated with the negative pressure cavity (304).
9. The vacuum drainage pressure stabilizing valve according to claim 8, wherein: the diameter of the negative pressure port (302) is far smaller than that of the vacuum drainage pipeline (1), and the negative pressure port is connected with the vacuum drainage pipeline in parallel.
10. The vacuum drainage pressure stabilizing valve according to claim 9, wherein: the set opening vacuum degree is smaller than the maximum vacuum degree in the access point of the vacuum drainage pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321579110.9U CN220770235U (en) | 2023-06-20 | 2023-06-20 | Vacuum drainage pressure stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321579110.9U CN220770235U (en) | 2023-06-20 | 2023-06-20 | Vacuum drainage pressure stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220770235U true CN220770235U (en) | 2024-04-12 |
Family
ID=90598428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321579110.9U Active CN220770235U (en) | 2023-06-20 | 2023-06-20 | Vacuum drainage pressure stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220770235U (en) |
-
2023
- 2023-06-20 CN CN202321579110.9U patent/CN220770235U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |