Blocking-type anti-pollution clean floor drain and use method thereof

Abstract

The invention discloses a blocking-type anti-pollution clean floor drain. The blocking-type anti-pollution clean floor drain comprises a floor drain main body (1), a check valve (2), a floor drain isolation valve (3), a trap (4), a sewage pipeline (5), a pressure sensor (6) and a vacuum pipeline (7); the floor drain main body (1) is installed on a floor (9) of a clean room, an elbow is connected between the floor drain main body (1) and the vertical check valve (2), the floor drain main body (1) is connected with the floor drain isolation valve (3), and an outlet end of the floor drain isolation valve (3) is connected with the trap (4); and an outlet end of the trap (4) is connected to the sewage pipeline (5), an outlet end of the vertical check valve (2) is connected to the vacuum pipeline (7), and the pressure sensor (6) is installed on the vacuum pipeline (7) through a tee.

Description

technical field [0001] The invention relates to the technical field related to drainage structures, in particular to a floor drain, in particular to a barrier type anti-pollution clean floor drain and a method for using the same. Background technique [0002] At present, in the field of drainage, especially the floor drains used in clean rooms all use figure 1 The stainless steel sanitary floor drain shown in the figure has a water seal inside, and the water seal blocks the connection between the clean room and the external environment of the sewage pipe to ensure that the air in the clean room is not polluted; when this type of floor drain is used, there are the following types State: one is the state when the floor drain is not used, such as figure 1 As shown, the water seal 14 is filled with liquid (water or disinfectant), and the upper cover 12 of the floor drain is not opened. In this state, when the pressure of the environment outside the sewage pipe relative to the c...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of drainage, especially the floor drains used in clean rooms all use figure 1 The stainless steel sanitary floor drain shown in the figure has a water seal inside, and the water seal blocks the connection between the clean room and the external environment of the sewage pipe to ensure that the air in the clean room is not polluted; when this type of floor drain is used, there are the following types State: one is the state when the floor drain is not used, such as figure 1 As shown, the water seal 14 is filled with liquid (water or disinfectant), and the upper cover 12 of the floor drain is not opened. In this state, when the pressure of the environment outside the sewage pipe relative to the clean room is positive, the gas in the sewage pipe breaks through. The water seal enters the clean room through the gap between the floor drain upper cover 12 and the floor drain body 11, thereby causing the risk of clean room pollution (even if the multi-stage water seal series method is used, the same pollution risk exists); the second is when using the floor drain. state, such as figure 2 As shown, the upper cover 12 of the floor drain is opened, and the clean room drains water through the floor drain. In this state, when the pressure of the environment outside the sewage pipe relative to the clean room is positive, the gas in the sewage pipe also breaks through the water seal and pollutes the clean room. risk; the third is the state when the floor drain is sterilized, such as image 3 As shown, the upper cover 12 of the floor drain and the inner cover 13 of the floor drain are both opened. In this state, the environment outside the sewage pipe is directly connected with the clean room, and the risk of pollution is further increased; in addition, when the floor drain is not used, if the water seal 14 The liquid is an unclean liquid, which will breed a large number of bacteria, and there is a risk of polluting the clean room through the gap between the floor drain cover 12 and the floor drain body 11; at the same time, if the supervision of the floor drain is missing, the liquid in the floor drain water seal 14 will be in the sewage pipe. When the pressure of the external environment relative to the clean room is negative, it is easy to be drained, causing the water seal to fail, which in turn brings the risk of clean room contamination

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