CN212429873U - One-way overflow valve - Google Patents
One-way overflow valve Download PDFInfo
- Publication number
- CN212429873U CN212429873U CN202020961611.3U CN202020961611U CN212429873U CN 212429873 U CN212429873 U CN 212429873U CN 202020961611 U CN202020961611 U CN 202020961611U CN 212429873 U CN212429873 U CN 212429873U
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- CN
- China
- Prior art keywords
- outlet pipe
- water outlet
- lower shell
- rubber diaphragm
- upper cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a one-way overflow valve, which comprises an upper cover, a rubber diaphragm, a lower shell and a clamp, wherein the upper cover is provided with an air inlet, the rubber diaphragm is provided with a groove for wrapping the lower shell, the lower shell is wrapped in the rubber diaphragm, and the upper end surface and the lower end surface of a water outlet pipe are both in an open shape; the upper end surface of the water outlet pipe is wrapped in the rubber diaphragm, the upper cover is connected with the lower shell, the lower shell comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are vertically intersected and communicated. The one-way overflow valve realizes one-way sealing by utilizing the pressure difference generated when the railway locomotive runs. The one-way sealing is realized only by utilizing the power brought by the external environment without any external force, and the reverse flow prevention is realized. The whole structure has no screw connection structure, good sealing, light weight, reliable connection and simple and convenient assembly.
Description
Technical Field
The utility model relates to the technical field of valves, specifically an overflow valve for among railway locomotive.
Background
At present, overflow valves commonly used on railways cannot be sealed in a one-way mode. The engine in the prior art is provided with a one-way valve for controlling airflow to flow in a single direction, but the engine is provided with a threaded structure, is complex to assemble and is not suitable for preventing reverse flow of a railway locomotive.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem existing in the prior art, the utility model aims at providing an anti-backflow one-way overflow valve.
In order to solve the technical problem, the technical scheme of the utility model is that:
a one-way overflow valve comprises an upper cover, a rubber diaphragm, a lower shell and a clamp;
the upper cover is provided with an air inlet;
the rubber diaphragm is provided with a groove for wrapping the lower shell, and the lower shell is wrapped in the rubber diaphragm;
the upper end surface and the lower end surface of the water outlet pipe are both in an open shape; the upper end surface of the water outlet pipe is wrapped in the rubber diaphragm;
the upper cover is connected with the lower shell;
the lower shell comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe is vertically intersected and communicated with the water outlet pipe.
Furthermore, the top surface of the upper cover is an upward protruding cambered surface.
Furthermore, silicone grease is filled in a groove in the rubber diaphragm.
Furthermore, the upper cover and the lower shell are connected through a clamping hoop.
Furthermore, the upper cover of the overflow valve and the lower shell are connected together by two hoops.
Further, the upper cover covers the rubber diaphragm and the lower shell.
Furthermore, the water inlet pipe is connected with an overflow port of a grey water collecting box of the locomotive, and the water outlet pipe is communicated with the atmosphere.
Furthermore, the upper end face of the water outlet pipe is connected with a hollow wafer, the hollow of the hollow wafer is overlapped with the upper end face of the water outlet pipe, and the hollow wafer is a downward protruding cambered surface.
Furthermore, the water inlet pipe and the water outlet pipe are intersected at the position close to the upper end face of the water outlet pipe.
Furthermore, the one-way overflow valve is horizontally arranged, the water outlet pipe is vertical to the horizontal plane, and the outlet of the water outlet pipe faces downwards.
When the railway locomotive runs and does not need to overflow, the railway locomotive is high in movement speed, the air flow speed outside the locomotive is high, the pressure near the locomotive body is small, because the lower shell is connected with the atmosphere, the cavity pressure P1 between the lower port of the lower shell and the rubber diaphragm is also very small, the cavity pressure P2 between the upper cover and the rubber diaphragm is far greater than P1, the air in the cavity of the upper shell downwards extrudes the rubber diaphragm, the deformed rubber is lower than the position where the water inlet pipe and the water outlet pipe intersect, the water outlet pipe of the lower shell is sealed by the rubber diaphragm, and one-way sealing is realized.
When the railway locomotive needs to overflow, water enters from the water inlet pipe, and gives the force of impact to one side of the rubber diaphragm, the rubber diaphragm deforms, the water outlet pipe of the lower shell cannot be sealed by the rubber diaphragm at the moment, and the water flows out from the water outlet pipe.
After one-way sealing, outside air pressure can not influence the grey water tank, so that backflow can be prevented, and series flow of air pressure inside and outside the vehicle can be prevented.
The utility model has the advantages that:
1. the one-way sealing is realized only by utilizing the power brought by the external environment without any external force, and the reverse flow prevention is realized.
2. The whole structure has no screw connection structure, good sealing, light weight, reliable connection and simple and convenient assembly.
3. The one-way overflow valve system is added, so that the air pressure in the vehicle can be prevented from flowing out of the vehicle through the device, and the series flow of the air pressure inside and outside the vehicle is reduced.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is an exploded view of the components of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention.
In the figure, the device comprises an upper cover 1, a clamp 2, a hoop 3, a rubber diaphragm 4, a lower shell 5, an air inlet 6, a water inlet pipe 7, a water outlet pipe 8 and a hollow wafer.
Detailed Description
Example 1
As shown in fig. 1 and 2, the one-way overflow valve comprises an upper cover 1, a clamp 2, a rubber diaphragm 3 and a lower shell 4;
the upper cover is provided with an air inlet 5, and the area of the air inlet is far smaller than that of the upper end surface of the water outlet pipe.
The air inlet is arranged to be beneficial to air pressure balance.
The rubber diaphragm 3 is provided with a groove for wrapping the lower shell 4, and the lower shell 4 is wrapped in the rubber diaphragm 3;
the upper end surface and the lower end surface of the water outlet pipe 7 are both open; the upper end surface of the water outlet pipe 7 is wrapped in the rubber diaphragm 3;
the upper cover 1 is connected with the lower shell 4;
the lower shell comprises a water inlet pipe 6 and a water outlet pipe 7, and the water inlet pipe 6 is vertically intersected and communicated with the water outlet pipe 7.
Further, the top surface of the upper cover 1 is an upward protruding arc surface.
Further, a groove in the rubber diaphragm 3 is filled with silicone grease.
The groove in the rubber diaphragm 3 is coated with silicone grease, then the lower shell 4 is embedded into the diaphragm groove in an interference fit mode, and the silicone grease fully fills possible gap positions, so that the whole cavity is good in sealing.
Further, the upper cover 1 and the lower shell 4 are connected by a clamp 2.
Furthermore, the overflow valve upper cover 1 and the overflow valve lower shell 4 are connected together by two clamping bands.
Further, the combination of the rubber diaphragm 3 and the lower shell 4 is arranged in the upper cover 1, and the periphery of the combination is fixed by two hoops, so that the rubber diaphragm 3 and the lower shell 4 are guaranteed against falling out of the upper cover 1 when bearing pressure.
Further, the upper cover 1 covers the rubber diaphragm 3 and the lower shell 4.
Furthermore, the upper end surface of the water outlet pipe 7 is connected with a hollow wafer 8, the hollow of the hollow wafer is overlapped with the upper end surface of the water outlet pipe, and the hollow wafer is a downward protruding cambered surface; the cambered surface design of the hollow wafer protruding downwards can provide a buffer effect for the rubber diaphragm when deforming downwards.
Furthermore, the water inlet pipe 6 and the water outlet pipe 7 are intersected at the position close to the upper end face of the water outlet pipe.
Example 2
The water inlet pipe is connected with an overflow port of a grey water collecting box of the locomotive, and the water outlet pipe is communicated with the atmosphere.
The one-way overflow valve is horizontally arranged, the water outlet pipe is vertical to the horizontal plane, and the outlet of the water outlet pipe faces downwards.
When the grey water collecting box does not need to overflow when the railway locomotive runs, the movement speed of the railway locomotive is high, the air flow speed outside the locomotive is high, the pressure near the locomotive body is low, because the lower shell is connected with the atmosphere, the cavity pressure P1 between the lower port of the lower shell and the rubber diaphragm is also very low, the cavity pressure P2 between the upper cover and the rubber diaphragm is far larger than P1, the air in the cavity of the upper shell downwards extrudes the rubber diaphragm, the deformed rubber is lower than the position where the water inlet pipe and the water outlet pipe intersect, the water outlet pipe of the lower shell is sealed by the rubber diaphragm, and one-way.
When the grey water collecting box needs to overflow, water in the grey water collecting box enters from the water inlet pipe, impact force is applied to one side face of the rubber diaphragm, the rubber diaphragm deforms, the rubber diaphragm cannot seal the lower shell water outlet pipe at the moment, and the water in the grey water collecting box flows out from the water outlet pipe.
After one-way sealing, outside air pressure can not influence the grey water tank, so that backflow can be prevented, and series flow of air pressure inside and outside the vehicle can be prevented.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A one-way overflow valve is characterized by comprising an upper cover, a rubber diaphragm, a lower shell and a clamp;
the upper cover is provided with an air inlet;
the rubber diaphragm is provided with a groove for wrapping the lower shell, and the lower shell is wrapped in the rubber diaphragm;
the lower shell comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe is vertically intersected and communicated with the water outlet pipe;
the upper end surface and the lower end surface of the water outlet pipe are both in an open shape; the upper end surface of the water outlet pipe is wrapped in the rubber diaphragm;
the upper cover is connected with the lower shell.
2. The one-way relief valve according to claim 1, characterized in that the top surface of the upper cover is an upwardly projecting arc surface.
3. The one-way relief valve according to claim 1, wherein the groove in said rubber diaphragm is filled with silicone grease.
4. A relief and check valve as claimed in claim 1 wherein said upper cover is connected to said lower housing by a clamp.
5. The one-way relief valve according to claim 1 or 4, wherein the upper cover and the lower housing of the relief valve are connected together by two clips.
6. The one-way relief valve according to claim 1, wherein said upper cover is covered with a rubber diaphragm and a lower housing.
7. The one-way overflow valve of claim 1, wherein the water inlet pipe is connected to an overflow port of a grey water collecting tank of the locomotive, and the water outlet pipe is communicated with the atmosphere.
8. The one-way overflow valve as recited in claim 1, wherein the upper end surface of the water outlet pipe is connected with a hollow disc, the hollow of the hollow disc is overlapped with the upper end surface of the water outlet pipe, and the hollow disc is a downward-protruding cambered surface.
9. The one-way relief valve according to claim 1, wherein the inlet pipe intersects the outlet pipe at a position near the upper end surface of the outlet pipe.
10. The one-way overflow valve of claim 1, wherein the one-way overflow valve is horizontally mounted, the water outlet pipe is vertical to the horizontal plane, and the outlet of the water outlet pipe faces downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020961611.3U CN212429873U (en) | 2020-05-29 | 2020-05-29 | One-way overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020961611.3U CN212429873U (en) | 2020-05-29 | 2020-05-29 | One-way overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429873U true CN212429873U (en) | 2021-01-29 |
Family
ID=74270582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020961611.3U Expired - Fee Related CN212429873U (en) | 2020-05-29 | 2020-05-29 | One-way overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429873U (en) |
-
2020
- 2020-05-29 CN CN202020961611.3U patent/CN212429873U/en not_active Expired - Fee Related
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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: 20210129 Termination date: 20210529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |