Angle diaphragm type mud valve with good sealing performance

Abstract

The invention discloses an angle diaphragm type mud valve with good sealing performance and specially relates to the technical field of angle diaphragm type mud valves. The angle diaphragm type mud valve comprises a valve body. A sealing block is fixedly connected in the valve body; a sealing mechanism is arranged inside the sealing block; the sealing mechanism comprises a rotating plate; the rotating plate is embedded in the sealing block; and two torsion springs are sleeved on a rotating shaft. According to the invention, a diaphragm is separated from the rotating plate during sludge discharging; in the sludge circulation process, the rotating plate is rotated to a second groove, so that sludge cannot be adhered to the surface, in contact with the diaphragm, of the rotating plate; and when the sludge is completely discharged, the rotating plate is overturned to return to an original position by utilizing resilience force of the torsion springs, and the diaphragm is brushed once during overturning; and the sealing performance is enhanced during sealing since the top surface of the rotating plate is always positioned in the second groove and is not adhered with the sludge and the contact part of the diaphragm with the rotating plate is also brushed.

Description

technical field [0001] The invention relates to the technical field of an angle diaphragm type mud discharge valve, more specifically, the utility model relates to an angle type diaphragm type mud discharge valve with good sealing performance. Background technique [0002] The sludge discharge valve, also known as the cover valve, is often used to discharge sludge from the bottom of the sedimentation tank of urban water plants and sewage treatment plants. The applicable medium of the sludge discharge valve is raw sewage, the temperature of the medium should generally be less than 50°C, and its working water depth is less than 10 meters. The sludge discharge valve is also used in water treatment plants to discharge sludge and waste water in the pool. The sludge discharge valve It is an angle structure with a nylon reinforced rubber diaphragm inside, which can be used for long-term mud discharge valve. [0003] The Chinese patent of the patent application publication number C...

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Problems solved by technology

[0004] However, when it is actually used, there are main technical problems, such as a lot of silt will adhere to the diaphragm after the silt flow passes through, so that when the diaphragm is used to seal again, there will be a gap due to a lot of silt on the surface of the diaphragm, and the seal will not be complete. use

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