Sewer manhole covers and manhole cover assemblies

A technology for sewers and manhole covers, applied in water conservancy projects, underwater structures, artificial islands, etc., can solve time-consuming and labor-intensive problems, and achieve the effects of avoiding pipe burst accidents, improving safety, and improving connection strength

Active Publication Date: 2021-11-26
重庆振坤达交通设施有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Later, in order to avoid explosion accidents, the corresponding manhole cover could only be opened regularly, and the biogas in the well was pumped out by the exhaust fan, which was very time-consuming and laborious.

Method used

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  • Sewer manhole covers and manhole cover assemblies
  • Sewer manhole covers and manhole cover assemblies
  • Sewer manhole covers and manhole cover assemblies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a sewer manhole cover, comprising the following raw materials in parts by weight: 7-9 parts of styrene, 6-8 parts of polystyrene, 60-80 parts of 109 resin, 90-110 parts of stone powder, 0.03-0.05 parts Calcium hydroxide, 1.5-2 parts of zinc stearate, 0.015-0.02 parts of tert-butyl ester, 10-20 parts of ethylene, 30-50 parts of glass fiber.

[0034] The production process is as follows: first add stone powder, glass fiber, 109 resin, and polystyrene into the mixing equipment, and then add other components and stir until they are evenly mixed. The mixing equipment is an existing mixer, and will not be described here. Preheat the mold to 120-150°C, first pour the mixture into the lower mold to cover the bottom of the lower mold, then put the steel skeleton, then pour the mixture to cover the steel skeleton, and finally cover the upper mold, at 250-300 Hold the pressure for 8-15 minutes under the hydraulic pressure of 1 ton, and demould.

[0035] I...

Embodiment 2

[0041] Such as Figure 6 and Figure 7 As shown, this embodiment provides a sewer manhole cover assembly, including the sewer manhole cover described in Embodiment 1, and also includes an annular well base 8, the lower end of which well base 8 extends inward to form an annular support portion 8a , the top surface of the support portion 8a is against the bottom surface of the well cover support ring 2, and an anti-falling net 9 is fixed at the lower end of the well base 8, and the anti-falling net 9 is arranged facing the opening of the well base 8. The lower end of the well base 8 extends outward circumferentially to form an annular mounting ring 8b, and the outer wall of the well base 8 protrudes outward to form a plurality of circumferentially evenly distributed reinforcing blocks 8c, the lower end of the reinforcing block 8c is in contact with the mounting ring. The top surfaces of 8b are integrally connected. In this embodiment, preferably, there are eight reinforcing bl...

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Abstract

The invention discloses a sewer manhole cover. By designing 18 dispersed air holes on the manhole cover body, the biogas in the sewer can be evacuated from the air holes, effectively avoiding high-concentration biogas in the sewer and preventing pipe bursting. The accident occurred; and the components and production process of the manhole cover were redesigned. Even if a large number of ventilation holes were opened, the bearing capacity of the manhole cover would not be affected. In fact, the new components and process made the load of the manhole cover as high as 60 tons. The conventional manhole cover load is only about 40 tons, and the service life of the manhole cover has been significantly improved. And a well cover assembly including the well cover is provided. An anti-falling net is arranged on the well base of the well cover assembly to prevent personnel from accidentally falling into the well after the cover is removed, thereby improving the safety of the well base assembly.

Description

technical field [0001] The invention relates to a sewer manhole cover and a sewer manhole cover assembly, which are mainly used for explosion-proofing of the sewer and improving the safety of the sewer. Background technique [0002] At present, the sewer is mainly used to get rid of sewage and rainwater, and the sewer at every interval communicates with the ground through the well way, and a well cover assembly is installed on the well way upper end to cover the opening, and the well cover assembly includes a well cover and a well seat. With the expansion of the city, the scale of the sewer is also increasing, and the connection between the sewer and the outside world is becoming more and more limited. In this way, the sewage in the sewer is easy to ferment and produce biogas. In the hot summer, as the temperature rises, the concentration of biogas in the sewer also increases. If the high-concentration biogas is not evacuated in time, it is very likely to explode, and the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/04E02D29/14
CPCC04B26/04E02D29/1472C04B24/00C04B24/24C04B18/12C04B22/064C04B24/085C04B24/045C04B14/42C04B32/02
Inventor 张立陈华
Owner 重庆振坤达交通设施有限公司
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