Shanghai Kohler Electronics Ltd.

Shanghai Pujia Drilling Technology Co., Ltd.

Minghui Zhu

Bo Hu

Dan Cao

Dingyu Guo

Haixing Sun

Xiaobo Liu

Yingfeng Wang

Jiongjun Xue

Ni Li

Hongrui Zhang

Yiran Liu

Zhuanrui Liu

Paul Kwong Shun Cheung

Weiran Xin

A molding method for producing a screw drill stator using an elastomer material includes: S1. sequentially roughening, cleaning and drying an inner surface of the stator tube; mixing an adhesive and a diluent, coating the mixture obtained on the inner surface, and heating it for later use; S2, uniformly coating a mold release agent on a surface of a mandrel mold, and heating or drying it naturally for later use; S3. assembling the processed stator tube and the processed mandrel mold to obtain an assembled mold; S4. performing a vacuum defoaming under negative pressure on a mixture obtained by uniformly mixing a prepolymer of the elastomer material with a defoaming agent; S5. uniformly mixing the defoamed prepolymer of the elastomer material with a curing agent, and pouring the obtained mixture into the assembled mold, sealing and curing the poured assembled mold by hierarchical heating to obtain the stator.

Molding method for producing a stator for a screw drilling tool using elastomer material

A prepolymer of elastomer material for screw drilling tools and a preparation method thereof are provided. The prepolymer includes component A and component B, wherein the component A includes hydroxyl-terminated liquid rubber, polytetrahydrofuran diol, and polyether polyol; the component B includes at least one of an isocyanate, a cyanate, and a cyano compound; the mass ratio of the hydroxyl-terminated liquid rubber, polytetrahydrofuran diol, and polyether polyol is (0.2-1.0): (0.2-1.0): (0.2-1.0). Different molecular segments of different proportions are introduced through structural design, such that the molecular structure of the prepolymer has both rigid and flexible segments, thus to achieve an adjustable and controllable structure of the prepolymer; and the introduction of active groups makes the prepolymer to show good reactivity and processability. Therefore, a reactive elastomer material having excellent properties such as hardness, tear strength, and tensile strength can be obtained used as an elastomer material for screw drilling tools.

Prepolymer of elastomer material for screw drilling tool and preparation method thereof

A process includes setting a preset temperature; setting up a counter, wherein a first number is displayed on the counter in response to a water control switch switching from a low position to a high position, a second number is displayed on the counter in response to the water control switching from the high position to the low position; setting a target temperature in response to a first determination as to whether the first number or the second number is displayed on the counter, wherein the target temperature is equal to the preset temperature in response to the first number being displayed and the target temperature is equal to preset temperature less an adjustment temperature in response to the second number being displayed; and maintaining the target temperature for a period of time, then restoring the target temperature to the preset temperature after the period of time.

Systems and methods for controlling water temperature in toilets and bidets

A method for automatically configuring an electronic toilet device includes detecting usage of the electronic toilet device throughout a first time period. The first time period is divided into a plurality of discrete time units. The method further includes recording a usage state for each of the plurality of time units in the first time period based on the detecting and using the recorded usage states to configure an operating schedule for the electronic toilet device for a next time period. The method further includes operating the electronic toilet device throughout the next time period according to the operating schedule while detecting and recording a usage state for each of the plurality of time units in the next time period and periodically configuring an operating schedule for each subsequent time period using the recorded usage states associated with a preceding time period.

Methods for automatically configuring an operating schedule for an electronic toilet device

Systems and methods for automatically configuring an operating schedule for an electronic toilet device

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Shanghai, China

Minghui Zhu