Water pump connecting flexible sleeve for building construction

Abstract

The invention relates to the technical field of building engineering, in particular to a water pump connecting flexible sleeve for building construction. The flexible sleeve comprises a main pipe body, and an upstream face flange plate and a downstream face flange plate are arranged at the two ends of the main pipe body separately; one end of the main pipe body is connected to a flange gland through an extrusion type sealing ring; a telescopic wing ring sleeves the middle of the main pipe body, and rubber strips are surrounded on the telescopic wing ring at intervals; a rubber gasket is arranged between the inner wall of the telescopic wing ring and the outer wall of the main pipe body; and the inner wall of the upstream face flange plate and the inner wall of the downstream face flange plate are each provided with an L-shaped bend extending towards an inner cavity of the main pipe body, and one sides of the inner walls of the L-shaped bends of the upstream face flange plate and the downstream face flange plate are each provided with a reinforcing sealing ring. According to the flexible sleeve, a circle of telescopic sealing protection can be formed through the outer wall of the middle part of the main pipe body through the telescopic wing ring, gaps caused by uneven thermal expansion and cold contraction are avoided, the sealing effect is improved, and leakage is avoided.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a flexible casing for connecting a water pump for construction. Background technique [0002] The flexible waterproof casing is a hardware fitting suitable for structures that are subject to vibration or strict waterproof requirements where the pipe passes through the wall. Generally, manufacturers manufacture it according to the S312, 02S404 standard atlas developed and designed by the Academy of Building Sciences. The wall where the flexible waterproof casing passes through the wall should be replaced with a concrete wall if it is not concrete, and the casing must be solidified in the wall at one time; the flexible waterproof casing is widely used in construction, chemical industry, steel, tap water, sewage treatment and other units; generally, a casing is used when making a pool, which is the passage from the pipe to the pool, but the ordinary casing is diffic...

AI Technical Summary

Problems solved by technology

[0004] (1) The flexible waterproof casing is integrated with the wall during pouring by pre-embedding. However, the metal material of the flexible waterproof casing itself, the medium in the pipe and the concrete material of the wall have different thermal expansion and contraction coefficients. Causes a gap between the outer wall of the pipe and the wall, resulting in water seepage and leakage

[0005] (2) The flexible waterproof casing is only closed by a fixed sealing ring at one end and an extruded sealing ring at the other end, each end has only single-action protection, and the sealing effect needs to be improved

[0006] (3) After the inner tube is inserted into the middle of the flexible waterproof casing, the inner tube does not have to maintain its own level, but to reach the relative level with the casing, so that the rubber ring can be evenly stressed and the rubber ring can be evenly squeezed Only in this way can it achieve higher connection tightness, higher waterproof effect, and prevent water seepage caused by uneven expansion of the rubber ring. However, after the existing flexible waterproof sleeve is inserted into the inner tube, the inner tube and the inner tube will be separated due to installation errors. It is difficult to be relatively horizontal between casings

[0007] (4) The rubber ring on the water-facing surface of the existing flexible waterproof casing is generally completely snapped into the annular groove, resulting in more troublesome replacement

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