4 results about "Central cylinder" patented technology

The invention discloses an integrated sewage treatment device, comprising a sludge discharge pipe, a water inlet, an anoxic tank, a first flow passage, an anaerobic tank, a second flow passage, an aerobic tank, a water distribution pipe, a sedimentation tank and a central cylinder; the water inlet is located on a wall surface of the anoxic tank; the anaerobic tank is located outside the anoxic tank, the first flow passage is located on a wall surface between the anaerobic tank and the anoxic tank, and the first flow passage communicates the anaerobic tank and the anoxic tank; the aerobic tankis located outside the sedimentation tank, the aerobic tank is located above the anaerobic tank, the second flow passage is located on a wall surface between the aerobic tank and the anaerobic tank, and the second flow passage communicates the aerobic tank and the anaerobic tank; the sedimentation tank is located above the anoxic tank, the central cylinder is fixedly connected into the sedimentation tank, and the central cylinder is communicated with the aerobic tank through the water distribution pipe; the sludge discharge pipe is connected with the bottom of the sedimentation tank. The device has the effects of compact structure, small floor space, less running auxiliary equipment, uniform flow state and no dead angle of sedimentation.

The invention relates to a mold closing device and mold closing method for a three-post insulator mold. The mold closing device comprises a support frame, the support frame is provided with two positioning end half-mold support tables, the two positioning end half-mold support tables are arranged at an interval, the interval arrangement direction of the two positioning end half-mold support tablesis defined as the front-back direction, during use, a positioning half mold is placed on the positioning end half-mold support tables, and a central cylinder mounting hole extends left and right; a movable end half-mold support table is assembled on the support frame in a guiding mode in the left-right direction, when the movable end half-mold support table is used, a movable end half mold is placed on the movable end half-mold support table, and a center cylinder mounting hole extends left and right; and a channel extending left and right is formed between the two positioning end half-mold support tables, and the width, in the front-back direction, of the movable end half-mold support table is smaller than or equal to the width of the channel, so that the movable end half-mold support table can be inserted into the channel for mold closing.

The invention provides an underground drainage gas production device and a pipe column. The underground drainage gas production device comprises an upper joint, a central cylinder arranged at the lower end of the upper joint in a communication mode, a first clamping and hanging part sleeving the outer side of the central cylinder, a setting assembly sleeving the outer side of the central cylinderand located at the lower end of the first clamping and hanging part, and a first flow channel capable of being in communication with an inner cavity of the central cylinder, wherein the first flow channel is of a spiral structure. The underground drainage gas production device is of a rear-mounted structure, second clamping and hanging parts capable of being matched with the underground drainage gas production device can be firstly put into a shaft, and when throttling is needed, the underground drainage gas production device is put into the shaft, and the second clamping and hanging parts areof a cylinder shape, so that the drift diameter in the pipe column and the later operation are not influenced.