Square check valve

A check valve, square technology, applied in the direction of valve details, control valves, valve devices, etc., can solve problems such as prone to failure, difficult maintenance of installation location, etc., to achieve small maintenance workload, guaranteed service life, super corrosion resistance sexual effect

Pending Publication Date: 2020-02-11
GUHONG SHANGHAI ENVIRONMENTAL PROTECTION ENG EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the equipment is placed in the wet river for a long time, it is extremely prone to failure, and these installation locations are also difficult to maintain, which often brings many problems to the management of urban anti-pollution interception

Method used

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Examples

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing. The present invention will be further described.

[0021] A specific embodiment of the present invention is as figure 1 As shown, it includes a door frame 1 and a door leaf 2, and the door frame 1 includes a fixed frame 11 and a door leaf docking frame 12, wherein the fixing frame 11 is fixed on the installation wall by bolts, and the structure of the door leaf docking frame 12 is as follows: figure 2 As shown, including the vertical fixed surface and the docking surface with a certain angle with the fixed surface, and when the angle is set to 8°, it can ensure that even when the water level inside the pipe is higher than the water level outside the river by a small margin open.

[0022] like image 3 As shown, the top edge of the fixed frame 11 of the door frame 1 is provided with some door leaf connecting plates 13 . The top of the door leaf 2 is provided with some rotating shaft connecting pieces 21 matched with th...

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Abstract

The invention discloses a square check valve. The square check valve comprises a door leaf and a door frame, wherein the door frame comprises a fixed frame and a door leaf abutting joint frame; the fixed frame is fixed to an installing wall through bolts; the fixed surface of the door leaf abutting joint frame is welded to the fixed frame; the included angle between the abutting joint surface of the door leaf abutting joint frame and the fixed surface of the door leaf abutting joint frame is an acute angle; a plurality of door leaf connecting plates are arranged on the top edge of the fixed frame; a plurality of rotating shaft connecting sheets which are matched with the door leaf connecting plates are arranged on the top of the door leaf; and the rotating shaft connecting sheets and the door leaf connecting plates are connected together through shaft pins, so that the door leaf can rotate around the shaft pins. The square check valve is simple in structure and long in service life, can automatically open and close, and has little maintenance amount in later period.

Description

technical field [0001] The invention relates to the technical field of urban pipe network drainage and flood prevention and river channel backflow prevention, in particular to a square check valve. Background technique [0002] With the rapid development of urbanization in our country, the governance of urban rivers has also received attention. In order to protect the water body of the river from pollution, in the absence of floods, unpurified sewage is not allowed to be discharged into the river. However, in the case of heavy rain or flooding, the water level of the inner river continues to rise. At this time, in order to ensure that there will not be a large amount of water in the city, it is necessary to discharge the water in the inner river to the outer river, so as to reduce the burden of urban drainage management, and To achieve the effect of anti-fouling interception. [0003] In order to achieve the above-mentioned effects of water level management of internal and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03F16K27/02E02B3/00E03F7/04
CPCE02B3/00E03F7/04F16K15/03F16K27/0227
Inventor 朱珑珑
Owner GUHONG SHANGHAI ENVIRONMENTAL PROTECTION ENG EQUIP
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