CN216810004U - Sealed well lid - Google Patents
Sealed well lid Download PDFInfo
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- CN216810004U CN216810004U CN202122224860.1U CN202122224860U CN216810004U CN 216810004 U CN216810004 U CN 216810004U CN 202122224860 U CN202122224860 U CN 202122224860U CN 216810004 U CN216810004 U CN 216810004U
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- well lid
- sealing
- well cover
- well
- cover plate
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Abstract
The utility model relates to a sealed well cover, comprising: well cover plate and well cover frame; the side surface and the seating surface of the well cover plate, and the seating side surface and the seating bottom surface of the well cover frame are machined surfaces, the roughness is controlled to be Ra 14-Ra 16, and the cutting mark of the water line forms a fine grease storage groove. A boss is arranged at the upper part of the side surface of the well cover plate, and a grease storage cavity is formed between the side surface of the well cover plate below the boss and the sitting side surface of the well cover frame; the utility model uses the lubricating grease to fill the fit clearance of the well cover, and has the advantages of low cost, simple process and excellent sealing performance. The grease storage cavity plays a role in storing lubricating grease and improving sealing performance. The boss also reduces the processing area of the side surface of the well cover plate, reduces the weight of the well cover plate, improves the production efficiency and saves the production cost; the grease storage groove can increase the storage amount of the lubricating grease and improve the sealing performance. The sealing gasket is used for sealing the bolt hole of the well lid, the sealing plug is used for blocking the threaded hole, the threaded hole is not easy to fall off, and concrete or other materials can be effectively prevented from blocking the threaded hole.
Description
Technical Field
The utility model relates to the field of inspection well covers in municipal facilities, in particular to a simple and practical sealing well cover.
Background
The underground power supply, water supply, pollution discharge, communication and other infrastructure pipelines in the city need to be provided with inspection wells at proper positions so as to conveniently maintain and repair the equipment in the pipelines. For some inspection wells arranged on special pipeline routes (such as gas, cables, chemical sewage and the like), the well cover of the inspection well not only needs to play a role in covering and shielding, but also has good sealing performance.
The vast majority of manhole covers used in the market are cast iron products. As shown in fig. 18, the well lid has low dimensional accuracy, and the gap between the well lid and the well base is large, which makes it difficult to satisfy the requirements of water tightness and air tightness. On one hand, surface flowing water easily enters the inspection well along gaps, and accumulated water in the well is easily accumulated in the flood season, so that facility equipment in the well is damaged; on the other hand, peculiar smell in some sewage pipes easily overflows from the well lid gap, diffuses to the air, pollutes the surrounding environment. Therefore, relevant regulations are provided for the air tightness and the water tightness of the well lid in relevant domestic and foreign industry standards, and the well lid can be put into use after being tested according to relevant detection methods.
The prior art adopts the mode of pasting the rubber circle on the well lid to solve the leakproofness problem of well lid. The technical scheme is that a rubber ring is pasted on a well cover plate or a well cover frame, and the pasting position can be on the seat surface or the side surface. Under the gravity extrusion of well lid board, rubber circle atress warp, closely laminates between well lid board and well lid frame, the clearance between shutoff well lid board and the well lid frame to satisfy the requirement of gas tightness, the water proofness of well lid product. In addition, some well lids set up the bolt hole for strengthening sealed effect, or prevent that the well lid board from breaking away from the well lid frame on the well lid frame, set up the screw hole on the well lid frame, fasten the well lid in the well lid frame through the bolt, can compress tightly the rubber circle simultaneously, have improved its sealing performance.
Although the rubber ring can play a certain sealing role, the rubber ring after long-term service is prone to aging, dislocation, falling and the like, and the well lid is prone to sealing failure. The bolt holes of the well cover plate are easy to leak, so that the product is difficult to pass the standard test requirements of air tightness and water tightness. In addition, the threaded holes in the manhole cover frame are usually machined as through holes for the purpose of simplifying the process. In the well lid installation work progress, concrete or other materials get into the screw hole easily, cause the jam, make the bolt difficult to screw up, the well lid board can't be compressed tightly and lose sealing function.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a sealing well lid, aiming at solving the following problems:
1. the rubber ring is dislocated, falls off, ages and the like to cause the well lid to lose the sealing function;
2. after bolts and gaskets are installed on bolt holes in the well cover, leakage still easily occurs, and the standard test requirements of air tightness and water tightness cannot be met;
3. the threaded hole of the well lid frame lacks effective protective measures, and concrete or other materials easily block the threaded hole in the construction process, so that the bolt is difficult to screw up, and the well lid is sealed to lose efficacy
In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:
a sealed well lid comprising: the manhole cover plate 1 and the manhole cover frame 2; the side surface and the seating surface 3 of the well cover plate 1, and the seating side surface 5 and the seating bottom surface 7 of the well cover frame 2 are machined surfaces, the cutting marks of the water lines on the machined surfaces form fine grease storage grooves, and the grease storage grooves are used for storing lubricating grease smeared on the machined surfaces, so that the storage amount of the lubricating grease is increased, and the sealing performance is improved.
The roughness of the machined surface is controlled to Ra 14-Ra 16.
On the basis of the scheme, the boss 4 is arranged at the upper part of the side surface of the well cover plate 1, the side surface of the boss 4 is a processing surface, and when the well cover plate 1 and the well cover frame 2 are assembled, due to the existence of the boss 4, a grease storage cavity 6 is formed between the side surface of the well cover plate 1 below the boss 4 and the seating side surface 5 of the well cover frame 2; the grease storage cavity 6 is used for increasing the storage amount of lubricating grease and enhancing the sealing effect.
The height of the boss 4 is 1/3 of the height of the well cover plate, and the thickness of the boss 4 is 1/3 of the width of the seating surface 3 of the well cover plate.
After the well cover plate 1 and the well cover frame 2 are assembled into a whole, the gap is 0.1 mm-0.3 mm.
The manhole cover plate 1 is connected with the manhole cover frame 2 through bolts, bolt holes 8 are formed in the manhole cover plate 1, and corresponding threaded holes 9 are formed in the manhole cover frame 2; the bolt hole 8 is a stepped hole, and the upper hole of the stepped hole is large and the lower hole of the stepped hole is small.
When assembling the bolt 10, a metal gasket 11 and an elastic sealing gasket 12 are used for sealing between the head of the bolt 10 and the stepped surface of the bolt hole 8, and the elastic sealing gasket 12 and the bolt 10 are in tight fit or interference fit in the diameter direction.
The bottom of the threaded hole 9 of the well cover frame 2 is provided with a counter bore 13, a threaded sealing plug 14 is pre-installed in the counter bore 13, and the threaded sealing plug 14 is in interference fit with the counter bore 13.
The elastic sealing gasket 12 is made of 304 stainless steel; the material of the threaded sealing plug 14 is engineering plastic or rubber.
The consistency of the lubricating grease is 1# to 4 #.
The utility model has the beneficial effects that:
1. the lubricating grease is used for filling the fit clearance of the well lid, and the well lid is sealed by matching the filler (lubricating grease) with the processing technology. The lubricating grease used for filling the well lid is common lubricating grease, so that the cost is low, the process of smearing the lubricating grease is simple, and the sealing performance is excellent;
2. the annular boss structural design in the well lid board outside for well lid board and well lid frame form the storage fat chamber when the assembly, play storage lubricating grease, improve sealing performance's effect. In addition, the annular boss can also reduce the processing area of the side surface of the well cover plate, thereby reducing the weight of the well cover plate, improving the production efficiency and saving the production cost; by controlling the cutting speed and the cutting amount of the cutter, a water wave-shaped cutter mark, namely a grease storage groove, is formed on the surface of the processed surface. The roughness is controlled to be Ra 14-Ra 16. The grease storage groove can increase the storage capacity of the lubricating grease and improve the sealing performance.
3. Use the elastic sealing pad to seal the well lid bolt hole, the elastic sealing pad material is 304 stainless steel, and 304 stainless steel has better anticorrosive, anti-rust performance, can effectually avoid rustting because of the corrosion that service environment caused, reduces to corrode the condition that rusts and lead to sealed effect to reduce.
4. The sealing plug is used for blocking the threaded hole, the sealing plug is not easy to fall off, and concrete or other materials can be effectively prevented from blocking the threaded hole. The sealing plug is made of common plastic or rubber, so that the cost is low and the installation is simple and convenient. The maximum effect is achieved with the minimum cost.
5. The sealing well cover has good air tightness and water tightness. Can meet the test conditions in related industries and product standards at home and abroad, and successfully passes the test.
Drawings
The utility model has the following drawings:
FIG. 1a is a schematic view of a circular well lid;
FIG. 1b is a schematic view of a rectangular well lid;
FIG. 2 is a partial cross-sectional view of a circular well cover plate;
FIG. 3 is a partial cross-sectional view of a circular well cover frame;
FIG. 4 is a partial cross-sectional view of a rectangular well plate;
FIG. 5 is a partial cross-sectional view of a rectangular well cover frame;
FIG. 6a is a cross-sectional view of FIG. 1 a;
FIG. 6b is an enlarged view of a portion of FIG. 6 a;
FIG. 7a is a cross-sectional view of FIG. 1 b;
FIG. 7b is an enlarged partial view of FIG. 7 a;
FIG. 8a is a schematic structural view of a grease storage tank of a circular well cover plate;
FIG. 8b is a schematic structural view of a grease storage tank of a rectangular well cover plate;
fig. 9a is a schematic view of a partial cross-sectional three-dimensional structure of a circular manhole cover plate with bolt holes;
FIG. 9b is a schematic view of a partial cross-sectional three-dimensional structure of a rectangular manhole cover plate with bolt holes;
FIG. 10a is an enlarged partial view of FIG. 9 a;
FIG. 10b is an enlarged partial view of FIG. 9 b;
fig. 11a is a schematic view of a partial cross-sectional three-dimensional structure of a circular manhole cover frame with a threaded hole;
fig. 11b is a schematic view of a partial cross-sectional three-dimensional structure of a rectangular manhole cover frame with a threaded hole;
FIG. 12a is an enlarged partial view of FIG. 11 a;
FIG. 12b is an enlarged partial view of FIG. 11 b;
FIG. 13a is a schematic view of the configuration of the resilient gasket;
fig. 13b is a schematic view of the threaded sealing plug;
FIG. 14 is a perspective cross-sectional view of the assembled round well lid with bolts;
FIG. 15 is an enlarged partial view of FIG. 14;
FIG. 16 is a perspective cross-sectional view of the assembled rectangular well lid with bolts;
FIG. 17 is an enlarged partial view of FIG. 16;
FIG. 18 is a schematic view of a prior art well lid seal;
in the figure: 1. well cover plate 2, well cover frame 3, seat face 4, boss 5, seat side 6, grease storage chamber 7, seat bottom 8, bolt hole 9, screw hole 10, bolt 11, metal gasket 12, elastic sealing gasket 13, counter bore 14, threaded sealing plug 15, grease storage groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 17, the sealing well lid of the present invention is mainly characterized in that: 1. a grease storage cavity is arranged at the matching part of the side surface of the well cover plate and the side surface of the well cover frame; 2. the matching surface of the well cover plate and the well cover frame is subjected to turning and milling processing to form a grease storage groove; 3. lubricating grease is smeared on the matching surfaces of the well cover plate and the well cover frame; 4. additionally arranging a bolt sealing gasket; 5. the bottom of the threaded hole of the well lid frame is additionally provided with a sealing plug.
The specific technical scheme is as follows:
a sealed well lid comprising: the manhole cover plate 1 and the manhole cover frame 2;
the upper part of the side surface of the well cover plate 1 is provided with a boss 4, the height of the boss 4 is 1/3 about the height of the well cover plate, and the thickness of the boss 4 is 1/3 about the width of the well cover plate seating surface 3;
in the above-described manhole cover plate 1, the side surface of the boss 4 and the seating surface 3 are machined surfaces, and the roughness of the machined surfaces is controlled to Ra14 to Ra16 by selecting a tool and adjusting machining parameters, and a fine grease reservoir 15 is formed like a cutting mark of a watermark.
The seating side surface 5 and the seating bottom surface 7 of the well lid frame 2 are machined surfaces, and the roughness of the machined surfaces is controlled to Ra14 to Ra16 by selecting a tool and adjusting machining parameters, and a fine grease reservoir is formed like a cutting mark of a watermark.
After the well cover plate 1 and the well cover frame 2 are assembled into a whole, the gap is 0.1 mm-0.3 mm;
when the manhole cover plate 1 and the manhole cover frame 2 are assembled, due to the existence of the boss 4, a grease storage cavity 6 is formed between the side surface of the manhole cover plate 1 below the boss 4 and the seating side surface 5 of the manhole cover frame 2;
when the manhole cover plate 1 and the manhole cover frame 2 are assembled, lubricating grease is coated on all processing surfaces; the lubricating grease can fill the fit clearance of the well lid and the grease storage groove on the machining surface after assembly, and the effect of sealing the well lid is achieved. The excess grease will be squeezed into the grease storage cavity 6 to form a thicker grease layer, which can be reserved for use and can further strengthen the sealing effect.
Above-mentioned well lid board 1 passes through bolted connection with well lid frame 2, is equipped with bolt hole 8 on the well lid board 1, is equipped with corresponding screw hole 9 on the well lid frame 2. The bolt hole 8 is a stepped hole, and the upper hole of the stepped hole is large and the lower hole of the stepped hole is small.
When assembling the bolt 10, a metal gasket 11 and an elastic sealing gasket 12 are used for sealing below the head of the bolt 10;
when the bolt and the gasket are assembled, the elastic sealing gasket 12 is placed on the stepped surface of the bolt hole 8, the metal gasket 11 is placed on the elastic sealing gasket 12, and finally the bolt 10 is assembled and screwed;
the elastic sealing gasket 12 and the bolt 10 are in tight fit or interference fit in the diameter direction;
when the bolt 10 is screwed down, the metal gasket 11 and the elastic sealing gasket 12 are pressed on the stepped surface of the bolt 8 through the locking force of the bolt, so that the purpose of sealing the bolt hole is achieved;
the bottom of the threaded hole 9 of the well cover frame 2 is provided with a counter bore 13, a threaded sealing plug 14 is installed in the counter bore 13, the threaded sealing plug 14 and the counter bore 13 are in interference fit, the threaded sealing plug 14 is a pre-assembly part and needs to be assembled into the counter bore 13 of the well cover frame 2 before site construction, and the threaded hole of the well cover is prevented from being blocked by concrete or other materials in the construction process.
The material of the elastic sealing gasket 12 is 304 stainless steel;
the grease has a consistency of 1# to 4 #.
The threaded sealing plug 14 is made of engineering plastics or rubber.
Example one
As shown in fig. 14 and 15, a complete set of circular sealing manhole cover comprises a manhole cover plate 1, a manhole cover frame 2, fixing bolts and sealing accessories.
A boss 4 is arranged on the upper portion of the side face of the well cover plate 1 along the circumference, and when the well cover plate 1 and the well cover frame 2 are assembled, a grease storage cavity 6 is formed below the boss 4;
the side surface of the boss 4 of the well cover plate 1, the seating surface 3 of the well cover plate 1, the seating side surface 5 of the well cover frame 2 and the seating bottom surface 7 of the well cover frame 2 are all machined surfaces; the surface roughness after processing is controlled to be Ra 14-Ra 16, and a fine grease storage groove is formed on the processing surface like the knife mark of a water line;
be equipped with bolt hole 8 on the well lid 1, be equipped with screw hole 9 on the well lid frame 2, the bottom of screw hole 9 is equipped with counter bore 13 to the pre-installation has threaded sealing plug 14.
Before the well lid is assembled, the four processing surfaces are coated with lubricating grease in advance, when the well lid is assembled, the fit clearance between the processing surfaces and the grease storage groove can be filled with the lubricating grease, and the redundant lubricating grease can be extruded into the grease storage cavity 6 to be stored.
When the manhole cover plate 1 and the manhole cover frame 2 are assembled, bolts 10 are used for fastening; during fastening, firstly placing the elastic sealing gasket 12 on the step surface of the bolt hole 8, then placing the metal gasket 11 on the elastic sealing gasket 12, finally assembling and screwing the bolt 10, and pressing the metal gasket 11 and the elastic sealing gasket 12 onto the step surface of the bolt hole 8 through the locking force of the bolt, thereby achieving the purpose of sealing the bolt hole.
Example two
As shown in fig. 16 and 17, a complete set of rectangular sealing well lid includes a well lid plate 1, a well lid frame 2, a fixing bolt and a sealing auxiliary.
the side surface of the boss 4 of the well cover plate 1, the seating surface 3 of the well cover plate 1, the seating side surface 5 of the well cover frame 2 and the seating bottom surface 7 of the well cover frame 2 are all machined surfaces; the surface roughness after processing is controlled to be Ra 14-Ra 16, and a fine grease storage groove is formed on the processing surface like the knife mark of a water line;
be equipped with bolt hole 8 on the well lid 1, be equipped with screw hole 9 on the well lid frame 2, the bottom of screw hole 9 is equipped with counter bore 13 to the pre-installation has threaded sealing plug 14.
Before the well lid is assembled, the four processing surfaces are coated with lubricating grease in advance, when the well lid is assembled, the fit clearance between the processing surfaces and the grease storage groove can be filled with the lubricating grease, and the redundant lubricating grease can be extruded into the grease storage cavity 6 to be stored.
When the well cover plate 1 and the well cover frame 2 are assembled, bolts 10 are used for fastening; during fastening, firstly placing the elastic sealing gasket 12 on the step surface of the bolt hole 8, then placing the metal gasket 11 on the elastic sealing gasket 12, finally assembling and screwing the bolt 10, and pressing the metal gasket 11 and the elastic sealing gasket 12 onto the step surface of the bolt hole 8 through the locking force of the bolt, thereby achieving the purpose of sealing the bolt hole.
The above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions also belong to the protection scope of the present invention.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. A sealing well lid, comprising: the manhole cover comprises a manhole cover plate (1) and a manhole cover frame (2); the side surface and the seating surface (3) of the well cover plate (1), and the seating side surface (5) and the seating bottom surface (7) of the well cover frame (2) are all machined surfaces, a fine grease storage groove (15) is formed in a cutting mark of a water line on the machined surfaces, and the grease storage groove (15) is used for storing lubricating grease smeared on the machined surfaces, so that the storage amount of the lubricating grease is increased, and the sealing performance is improved.
2. The well lid according to claim 1, wherein the roughness of the processed surface is controlled to Ra 14-Ra 16.
3. The sealing well lid according to claim 1, characterized in that a boss (4) is provided on the upper side of the well lid plate (1), the side of the boss (4) is a machined surface, and when the well lid plate (1) and the well lid frame (2) are assembled, a grease storage chamber (6) is formed between the side of the well lid plate (1) below the boss (4) and the seating side (5) of the well lid frame (2) due to the boss (4); the grease storage cavity (6) is used for increasing the storage amount of lubricating grease and enhancing the sealing effect.
4. Sealing well lid according to claim 3, characterized in that the height of the boss (4) is 1/3 of the height of the well lid plate, and the thickness of the boss (4) is 1/3 of the width of the seating surface (3) of the well lid plate.
5. The sealing well lid according to claim 1, characterized in that the clearance is 0.1mm to 0.3mm after the well lid plate (1) and the well lid frame (2) are assembled into a set.
6. The sealing well lid according to claim 1, characterized in that the well lid plate (1) is connected with the well lid frame (2) through bolts, the well lid plate (1) is provided with bolt holes (8), and the well lid frame (2) is provided with corresponding threaded holes (9); the bolt hole (8) is a stepped hole, and the upper hole of the stepped hole is large while the lower hole of the stepped hole is small.
7. The well lid according to claim 6, characterized in that when the bolt (10) is assembled, a metal gasket (11) and an elastic sealing gasket (12) are used for sealing between the head of the bolt (10) and the stepped surface of the bolt hole (8), and the elastic sealing gasket (12) and the bolt (10) are in tight fit or interference fit in the diameter direction.
8. The sealing well lid according to claim 6, characterized in that a counter bore (13) is provided at the bottom of the threaded hole (9) of the well lid frame (2), a threaded sealing plug (14) is pre-installed in the counter bore (13), and the threaded sealing plug (14) and the counter bore (13) are in interference fit.
9. The sealing well lid according to claim 7, characterized in that the elastic sealing gasket (12) is made of 304 stainless steel; the material of the thread sealing plug (14) is engineering plastics or rubber.
10. The sealing well lid according to claim 1, wherein the consistency of the grease is 1# to 4 #.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224860.1U CN216810004U (en) | 2021-09-14 | 2021-09-14 | Sealed well lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224860.1U CN216810004U (en) | 2021-09-14 | 2021-09-14 | Sealed well lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216810004U true CN216810004U (en) | 2022-06-24 |
Family
ID=82038975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122224860.1U Active CN216810004U (en) | 2021-09-14 | 2021-09-14 | Sealed well lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216810004U (en) |
-
2021
- 2021-09-14 CN CN202122224860.1U patent/CN216810004U/en active Active
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