Manhole cover and detachable ventilation and water blocking component
By designing a detachable ventilation water blocking member, water blocking gaskets and float components are used to prevent rainwater from entering, and automatic ventilation is achieved by combining air pressure balance micropores, which solves the water accumulation problem of non-sealed cast iron inspection cover and the ventilation problem of sealed cast iron pressure manhole cover, ensuring the safe operation of inspection wells and pipelines.
Patent Information
- Application Number
- CN202421430335.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the prior art, the air permeability holes of the non-sealed cast iron inspection cover cause rainwater to enter the inspection well, causing serious water accumulation and affecting equipment safety; while the sealed cast iron pressure manhole cover lacks ventilation facilities, resulting in the accumulation of biogas and toxic gases in the pipeline, affecting safety.
A detachable ventilation water blocking member is designed, including a ventilation cylinder, a sealed float assembly and an air pressure balance micropore. It prevents rainwater from entering through a water blocking gasket, and uses a float ball and air pressure balance micropore to achieve automatic ventilation.
Effectively prevent rainwater from entering the inspection well, avoiding accumulated water and equipment corrosion; at the same time, solve the ventilation problem of sealed manhole covers, prevent the accumulation of biogas and toxic gases, and ensure the safety of pipeline operation and maintenance.
Smart Images
Figure CN222782103U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground drainage, in particular to an inspection well cover and a detachable ventilation and water-blocking component. Background Art
[0002] Outdoor drainage design standards require that sewage pipes and combined pipes should be equipped with ventilation facilities as needed; at the same time, in order to meet the requirements for convenient opening and maintenance of inspection well covers, non-sealed cast iron inspection well covers are provided with air vents for ventilation and maintenance of the inspection wells.
[0003] Since the non-sealed cast iron inspection well covers currently used are all equipped with air holes, rainwater from the road surface can enter the inspection well through the air holes, causing serious water accumulation inside the inspection well, leading to rust of valves inside the inspection well, rust of cables inside the inspection well, and rainwater entering the sewage inspection well, causing the sewage concentration to decrease.
[0004] At the same time, since the currently used sealed cast iron pressure manhole covers do not have ventilation facilities, if a separate ventilation pipe is set up, there are problems such as limited space near municipal roads, the ventilation pipe is not beautiful after it extends out of the ground, and the ventilation pipe inside the river channel is damaged by river water, resulting in the inability to arrange the ventilation pipe; if only sealed pressure manhole covers are used without ventilation, it will cause the accumulation of methane and toxic and harmful gases inside the pipeline, which will in turn affect the safety of pipeline operation and the safety of pipeline maintenance personnel going down the well. Utility Model Content
[0005] The utility model aims to solve the deficiencies of the prior art and to provide a manhole cover and a detachable ventilation and water-blocking component. By adopting this scheme, rainwater is prevented from entering the interior of the manhole through a water-blocking gasket, thereby avoiding serious water accumulation in the manhole; and when the internal air pressure is high, the water-blocking gasket is pushed open to achieve ventilation.
[0006] The utility model is realized by the following technical solutions:
[0007] A detachable ventilation and water blocking component, comprising:
[0008] A vent cylinder, the upper end of which is connected to the vent hole at the bottom of the manhole cover and communicates with the vent hole, and the vent cylinder is provided with a partition for dividing the internal space of the vent cylinder;
[0009] A sealing float assembly, the sealing float assembly comprising a water-blocking gasket and a float, the float is connected to the water-blocking gasket via a connector, a main hole for the connector to pass through is opened on the partition, and a gap is left between the main hole and the connector;
[0010] The water blocking gasket is placed on the partition and closes the upper end of the main hole, and the float is suspended below the partition.
[0011] Compared with the prior art, since the currently used non-sealed cast iron inspection well covers are all provided with air holes, rainwater from the road surface can enter the inspection well through the air holes, causing serious water accumulation in the inspection well, leading to rust of valves inside the inspection well, rust of cables inside the inspection well, and rainwater entering the sewage inspection well, resulting in reduced sewage concentration. In addition, if only sealed pressure well covers are used without ventilation, it will cause accumulation of methane and toxic and harmful gases inside the pipeline, thereby affecting the safety of pipeline operation and the safety of pipeline maintenance personnel working down the well. The utility model provides a detachable ventilation and water-blocking component, which can be installed under the air hole of any well cover, and rainwater is prevented from entering the inspection well through a water-blocking gasket, thereby avoiding serious water accumulation inside the inspection well; and when the internal air pressure is high, the water-blocking gasket is pushed open to achieve ventilation. The specific scheme includes a breather tube installed at the vent hole at the bottom of the manhole cover. The breather tube is connected from top to bottom and has a partition inside for placing a sealing float assembly. The sealing float assembly is preferably made of rubber material, such as a rubber gasket, a rubber connector and a rubber float. At this time, a water-blocking gasket is placed above the partition to close the main hole. The float is suspended below the partition through a connector. In this way, under the action of gravity, the water-blocking gasket can easily close the upper end of the main hole, which can solve the problem of rainwater entering the inspection well through the air hole, avoid serious water accumulation inside the inspection well, resulting in rust on the valves inside the inspection well, rust on the cables inside the inspection well, and rainwater entering the sewage inspection well, resulting in a decrease in sewage concentration. In addition, due to its light weight, when the air pressure inside the inspection well increases, the water-blocking gasket will be supported by the air pressure, thereby partially opening the main hole and allowing the vent to start ventilating. This can solve the problem that the sealed cast iron pressure manhole cover cannot be ventilated automatically and it is difficult to set up a separate ventilation pipe, avoid the accumulation of methane and toxic and harmful gases inside the pipeline, and provide protection for the safety of pipeline operation and the safety of pipeline maintenance personnel going down the well.
[0012] When the water level inside the inspection well rises, in order to prevent a large amount of rainwater and sewage inside the inspection well from buoying out of the inspection well through the ventilation main hole, an arc groove matching the size of the float is opened at the lower end of the main hole. In this solution, the rising water level inside the inspection well will submerge the float, and the float will rise under the action of buoyancy and seal the lower end of the main hole through the matching arc groove, thereby preventing rainwater and sewage inside the inspection well from buoying out.
[0013] In order to balance the air pressure inside and outside the manhole cover after the float closes the lower end of the main hole, the partition is also provided with air pressure balance microholes, and the two ends of the air pressure balance microholes are respectively connected to the space below the partition and the inside of the main hole. In this solution, as the water-blocking gasket is pushed out, the water level inside the inspection well rises and submerges the sealing rubber float, thereby closing the lower end of the main hole. At this time, since the partition is also provided with air pressure balance microholes, the air inside and outside the manhole cover can be kept connected through the air pressure balance microholes, solving the problem that the air pressure inside the inspection well is too high to seal the main ventilation hole and cause ventilation failure.
[0014] As a redundant solution, there are several air pressure balancing microholes; wherein the air pressure balancing microholes are inclined holes, the inclined upper ends of which are connected to the inner side of the main hole, and the inclined lower ends of which are inclined toward a direction away from the arc groove.
[0015] In order to limit the rising direction of the float under the action of buoyancy and prevent the float from failing to face the arc groove, the float is suspended inside the vent.
[0016] In order to make the sealing float assembly have certain elasticity and toughness, the sealing float assembly is made of corrosion-resistant rubber material.
[0017] As a redundancy solution, the breather cylinder is made of corrosion-resistant metal or synthetic material.
[0018] As a redundancy solution, the breather cylinder is made of ductile iron.
[0019] A further solution is a manhole cover, comprising a manhole cover body, wherein a detachable ventilation and water-blocking component is provided at a bottom vent hole of the manhole cover body. In this solution, the detachable ventilation and water-blocking component can be installed at the bottom of any manhole cover, such as a ductile iron manhole cover, a non-sealed cast iron manhole cover, a sealed cast iron pressure manhole cover, etc.
[0020] As a redundant solution, the upper end of the vent cylinder and the manhole cover body are welded or integrally formed. In this solution, the detachable ventilating and water-blocking component is combined with the manhole cover, which can be produced in a modular manner and can also be welded and installed on site, which is convenient for disassembly, maintenance and cleaning.
[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0022] 1. The utility model provides an inspection well cover and a detachable ventilation and water-blocking component. By installing the detachable ventilation and water-blocking component under the air vents of the non-sealed cast iron inspection well cover, the problem of rainwater entering the inspection well through the air vents can be solved, thereby avoiding serious water accumulation inside the inspection well, resulting in rust on the valves inside the inspection well, rust on the cables inside the inspection well, and rainwater entering the sewage inspection well, resulting in a decrease in sewage concentration.
[0023] 2. The utility model provides an inspection well cover and a detachable ventilation and water-blocking component. By installing the detachable ventilation and water-blocking component below the opening of the sealed cast iron pressure well cover, the problem that the sealed cast iron pressure well cover cannot be ventilated automatically and it is difficult to set up a ventilation pipe separately can be solved, thereby avoiding the accumulation of methane and toxic and harmful gases inside the pipeline, and providing protection for the safety of pipeline operation and the safety of pipeline maintenance personnel going down the well.
[0024] 3. The utility model provides an inspection well cover and a detachable ventilation and water-blocking component. The internal structure of the detachable ventilation and water-blocking component is relatively simple, which is easy to install, disassemble, maintain and clean. It can solve the current problems of external water entering the inspection well and internal water overflowing the inspection well, and can also meet the requirements of automatic ventilation of the inspection well cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:
[0026] Figure 1 A schematic structural diagram of a detachable ventilation and water blocking component according to an embodiment of the utility model;
[0027] Figure 2 A top view of a detachable ventilation and water blocking component according to an embodiment of the utility model;
[0028] Figure 3 A schematic diagram of the structure of an inspection well cover according to an embodiment of the utility model.
[0029] Marks and corresponding parts names in the attached drawings:
[0030] 1-ventilator, 2-partition, 3-water blocking gasket, 4-float, 5-connector, 6-air pressure balance microhole, 7-main hole, 8-manhole cover body. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0032] Embodiment 1:
[0033] This embodiment 1 provides a detachable ventilation and water blocking component, such as Figure 1-Figure 2 As shown, including:
[0034] A vent 1, the upper end of which is connected to the vent hole at the bottom of the manhole cover and communicates with the vent hole, and the vent 1 is provided with a partition 2 for dividing the internal space of the vent 1;
[0035] A sealing float 4 assembly, the sealing float 4 assembly comprises a water blocking gasket 3 and a float 4, the float 4 is connected to the water blocking gasket 3 via a connector 5, a main hole 7 is opened on the partition 2 for the connector 5 to pass through, and a gap is left between the main hole 7 and the connector 5;
[0036] The water blocking gasket 3 is placed on the partition 2 and closes the upper end of the main hole 7 , and the float 4 is suspended below the partition 2 .
[0037] Compared with the prior art, since the currently used non-sealed cast iron inspection well covers are all provided with air holes, rainwater from the road surface can enter the inspection well through the air holes, causing serious water accumulation in the inspection well, leading to rust of valves inside the inspection well, rust of cables inside the inspection well, and rainwater entering the sewage inspection well, resulting in reduced sewage concentration. In addition, if only sealed pressure well covers are used without ventilation, it will cause accumulation of methane and toxic and harmful gases inside the pipeline, thereby affecting the safety of pipeline operation and the safety of pipeline maintenance personnel working down the well. The utility model provides a detachable ventilation and water-blocking component, which can be installed under the air hole of any well cover, and prevents rainwater from entering the inspection well through the water-blocking gasket 3, thereby avoiding serious water accumulation inside the inspection well; and when the internal air pressure is high, the water-blocking gasket 3 is pushed open to achieve ventilation. In the specific scheme, it includes a vent tube 1 installed at the vent hole at the bottom of the manhole cover. The vent tube 1 is connected from top to bottom and has a partition 2 inside for placing a sealing float 4 assembly. The sealing float 4 assembly is preferably made of rubber material, such as a rubber gasket, a rubber connector 5 and a rubber float 4. At this time, a water-blocking gasket 3 is placed above the partition 2 and the main hole 7 is closed. The float 4 is suspended below the partition 2 through the connector 5. In this way, under the action of gravity, it is easy for the water-blocking gasket 3 to close the upper end of the main hole 7, which can solve the problem of rainwater entering the inspection well through the air vent, avoid serious water accumulation inside the inspection well, resulting in rust on the valves inside the inspection well, rust on the cables inside the inspection well, and rainwater entering the sewage inspection well, resulting in a decrease in sewage concentration. In addition, due to its light weight, when the air pressure inside the inspection well increases, the water-blocking gasket 3 will be supported by the air pressure, thereby partially opening the main hole 7, allowing the vent tube 1 to start ventilating, which can solve the problem that the sealed cast iron pressure manhole cover cannot be ventilated automatically and it is difficult to set up a separate ventilation pipe, avoid the accumulation of methane and toxic and harmful gases inside the pipeline, and provide protection for the safety of pipeline operation and the safety of pipeline maintenance personnel going down the well.
[0038] When the water level inside the inspection well rises, in order to prevent a large amount of rainwater and sewage inside the inspection well from buoying out of the inspection well through the ventilation main hole 7, an arc groove matching the size of the float 4 is opened at the lower end of the main hole 7. In this solution, the rising water level inside the inspection well will submerge the float 4. At this time, the float 4 rises under the action of buoyancy and seals the lower end of the main hole 7 through the matching arc groove, thereby preventing rainwater and sewage inside the inspection well from buoying out.
[0039] In order to balance the air pressure inside and outside the manhole cover after the float 4 closes the lower end of the main hole 7, the partition 2 is also provided with an air pressure balance microhole 6, and the two ends of the air pressure balance microhole 6 are respectively connected to the space below the partition 2 and the inside of the main hole 7. In this solution, as the water-blocking gasket 3 is pushed out, the water level inside the inspection well rises and submerges the sealing rubber float 4, thereby closing the lower end of the main hole 7. At this time, since the partition 2 is also provided with an air pressure balance microhole 6, the air inside and outside the manhole cover can be kept connected through the air pressure balance microhole 6, which solves the problem that the sealing rubber float 4 is pushed up and seals the ventilation main hole 7 due to excessive air pressure inside the inspection well, resulting in inability to ventilate.
[0040] As a redundant solution, there are several air pressure balancing microholes 6; wherein the air pressure balancing microholes 6 are inclined holes, the inclined upper ends of which are connected to the inner side of the main hole 7, and the inclined lower ends are inclined toward a direction away from the arc groove.
[0041] In order to limit the rising direction of the float ball 4 under the action of buoyancy and to prevent the float ball 4 from failing to face the arc groove, the float ball 4 is suspended inside the vent cylinder 1 .
[0042] In order to make the sealing float 4 components have certain elasticity and toughness, the sealing float 4 components are made of corrosion-resistant rubber materials.
[0043] As a redundancy solution, the breather cylinder 1 is made of corrosion-resistant metal or synthetic material.
[0044] As a redundancy solution, the breather cylinder 1 is made of ductile iron.
[0045] Embodiment 2:
[0046] This embodiment 2 is further limited on the basis of embodiment 1, and provides a manhole cover for an inspection well, such as Figure 3 As shown, it includes a manhole cover body 8, and a detachable ventilation and water blocking component is provided at the bottom vent hole of the manhole cover body 8. In this solution, the detachable ventilation and water blocking component can be installed at the bottom of any manhole cover, such as a ductile iron inspection manhole cover, a non-sealed cast iron inspection manhole cover, a sealed cast iron pressure manhole cover, etc.
[0047] As a redundant solution, the upper end of the vent cylinder 1 is welded or integrally formed with the manhole cover body 8. In this solution, the detachable ventilating and water-blocking component is combined with the manhole cover, which can be produced in a modular manner and can also be welded and installed on site, which is convenient for disassembly, maintenance and cleaning.
[0048] Specific working principle:
[0049] When there is no flushing inside the inspection well and the air pressure inside the inspection well is balanced with the atmospheric pressure, the water-blocking gasket 3 fits against the partition 2 and blocks external rainwater from entering the inspection well; when the air pressure inside the inspection well increases, the water-blocking gasket 3 is supported by the air pressure and the component begins to ventilate automatically; when the water level inside the inspection well rises and submerges the sealing rubber float 4, the sealing rubber float 4 seals the main ventilation hole 7 to prevent a large amount of rainwater and sewage inside the inspection well from emitting out of the inspection well through the main ventilation hole 7; at the same time, an air pressure balancing microhole 6 is arranged next to the main ventilation hole 7, which solves the problem that the air pressure inside the inspection well is too high, causing the sealing rubber float 4 to support and seal the main ventilation hole 7, resulting in inability to ventilate.
[0050] Directions:
[0051] First, install the breather 1 assembly at the bottom of the finished non-sealed cast iron inspection manhole cover and the sealed cast iron pressure manhole cover, just below the vent hole, and then install the sealing rubber float 4 assembly at the position of the breather 1 assembly partition 2. It can also be cast and installed together with the non-sealed cast iron inspection manhole cover and the sealed cast iron pressure manhole cover.
[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A detachable ventilation and water blocking component, characterized in that: include: A vent cylinder (1), the upper end of which is connected to the vent hole at the bottom of the manhole cover and communicates with the vent hole, and the vent cylinder (1) is provided with a partition (2) for dividing the internal space of the vent cylinder (1); A sealing float assembly, the sealing float assembly comprising a water-blocking gasket (3) and a float (4), the float (4) being connected to the water-blocking gasket (3) via a connecting piece (5), the partition (2) being provided with a main hole (7) for the connecting piece (5) to pass through, a gap being left between the main hole (7) and the connecting piece (5); The water-blocking gasket (3) is placed on the partition (2) and closes the upper end of the main hole (7); the floating ball (4) is suspended below the partition (2).
2. A detachable ventilation and water blocking component according to claim 1, characterized in that: The lower end of the main hole (7) is provided with an arc-shaped groove which matches the size of the floating ball (4).
3. A detachable ventilation and water blocking component according to claim 1, characterized in that: The partition (2) is also provided with an air pressure balancing microhole (6), and the two ends of the air pressure balancing microhole (6) are respectively connected to the space below the partition (2) and the inside of the main hole (7).
4. A detachable ventilation and water blocking component according to claim 3, characterized in that: There are a plurality of air pressure balancing microholes (6).
5. The detachable ventilation and water blocking component according to claim 3, characterized in that: The float ball (4) is suspended inside the vent cylinder (1).
6. A detachable ventilation and water blocking component according to claim 1, characterized in that: The sealing float ball components are all made of corrosion-resistant rubber material.
7. The detachable ventilation and water blocking component according to claim 1, characterized in that: The vent cylinder (1) is made of corrosion-resistant metal or synthetic material.
8. A detachable ventilation and water blocking component according to claim 7, characterized in that: The vent cylinder (1) is made of ductile iron.
9. A manhole cover for inspection, characterized in that: It comprises a manhole cover body (8), wherein a detachable ventilation and water-blocking component according to any one of claims 1 to 8 is arranged at a bottom ventilation hole of the manhole cover body (8).
10. The manhole cover according to claim 9, characterized in that: The upper end of the vent cylinder (1) and the manhole cover body (8) are welded or integrally formed.