Development and application of "stepping on pump" Jiang Xiangshan (Department of Municipal and Environmental Engineering, Shenyang Institute of Civil Engineering and Architecture, 110015) Abstract With the shortage of water resources in our country, water conservation has become a top priority. However, the washing wastewater produced by household water is simply treated It can be used as a reclaimed water for urinating flushing, watering flowers and scrubbing articles. How to increase its water pressure has become a problem due to the pressureless pressure of the cleaned wash water. The development of "stepping pump" precisely meets this requirement. This paper introduces " Pump "structure, working principle and characteristics, and use the foot as a driving force, so that no pressure to produce pressure water for the use of recycled water and other water, to provide users with a very convenient condition. 1 Introduction Urban residents consume about two-thirds of their daily domestic water consumption for washing, showering, washing (collectively referred to as washing water), flushing and other water use. Washing water is discharged only by mild pollution. If the household recycles this part of the water for its own use, it will greatly ease the shortage of urban water resources and will also reduce the water charges for the households. According to the shortage of water resources in most parts of China and the existence of land for sewage treatment, management and funding, it is bound to be of great significance to study and solve the problem of household water-saving wash water reuse. China's urban residents commonly used sanitary ware with a sink, washbasin and squatting (or sitting) toilet. There are 500mm ~ 600mm high space below the wash basin and washbasin. Collecting and storing the container together with the collected water for collection does not cause any problem. Washing water pollution is small, can be precipitated, sieve filter, under conditions where necessary and households dosing bleach disinfection or the use of commercially available micro-ozone generator for ozone disinfection, you can get purified water for the toilet Rinse, watering flowers, rinse dirt and so on. 2 "Step on pump" 2.1 "Step on pump" The structure of the purification and reuse of washing water should be based on ①households do not affect each other, and the building has nothing to do with the water supply and drainage. ② simple purification of washing water ③ easy to reuse washing water ④ the use of existing conditions slightly modified households ⑤ low cost ⑥ significant cost savings festival. One of the key equipment is to develop a pressurized water delivery device that is "step on the pump" [1]. "Step on pump" is made of elastic rubber material, which consists of a foot supercharger and an energy storage device. Foot pedal when placed on an approximate diameter of about 150mm ~ 200mm, at the entrance of the interior with a back plate to prevent the foot when the supercharger water back to the inlet pipe, foot pedal supercharger outlet connected storage Device. The energy storage device is oblong with the approximate diameter of about 50mm-100mm and the length of 100-150mm. The inlet of the energy storage device is provided with a check-back plate to prevent the water in the energy storage device from flowing back to the supercharger and the outlet of the energy storage device. Water pipe connection. "Step on the pump" shown in Figure 1. 2.2 Working Process "Step on pump" import and export, respectively, with the wash water purification container outlet and water pipe connections, even into the container after the water flow into the supercharger, the supercharger bulging, foot-powered Depressurized turbocharger, turbocharger inlet check board at the same time off, the turbocharger water into pressure water, into the energy storage device and then into the water pipe. When the foot is stopped, the energy storage inside check plate is closed, the supercharger inlet inner check plate is opened, and the purified water inside the container flows into the supercharger again. The water pressure in the container is sent to the accumulator and water pipe. The purpose of setting the energy storage tank is filled with water. In design, the volume of the turbocharger is 3 ~ 4 times the volume of the accumulator water pipe. Even if the pedal stops the gap of the foot, Water flow to the water pipe. 2.3 The characteristics of "step on the pump," the use of leg strength, ease of force, without electricity, you can make low pressure sent to a high place. 2.4 "step on pump" pressure "step on pump" is made according to the principle of piston pump. According to Bernoulli's equation, P1 / r = Z2 + U22 / 2g is obtained without considering the "stepping pump" and head loss of the water pipe when the supercharger is full of water, and when the head U22 / 2g is 1 ~ 2m, Z2 is "stepping on the pump" to the toilet tank 2.10m, P1 / r = 3.1m ~ 4.1m, this pressure value supercharger is easy to do. 3 Application Examples 3.1 Example 1 Set in a household washbasin set 400mm long X 300mm wide X 600mm high set collection precipitation, screening, filtration, water storage containers. The container can be made of steel or glass, etc., the container is provided with overflow pipe, drain pipe, outlet pipe. Out of water pipes and water pipes are used 3/8 "hose and" step on pump "connected to the water pipe end of the outlet leading to the toilet (high or low) tank, according to the use of the method with the foot pedal so that the pressure inside the container Water into the tank, to be used for flushing 3.2 Example 2 A household hot water placed in a plastic bucket, with "step on the pump" were respectively connected with the barrel and the tube with a shower head, according to the pedaling supercharger booster For the shower 4 Conclusion (1) rubber "step on the pump" can rely on the foot to the water from low to high, for toilet flushing, watering, showering, washing items, etc. (2) (3) "Step pump" durable, easy to damage, easy to operate. (4) "Step on pump" manufacturing costs about 30 yuan, Low price. Reference 1 Jiang Naichang. Pump and pumping station. Beijing. China Building Industry Press, June 1993 Author: Jiang Xiangshan, male, born on September 30, 1946. 1970 graduated from Hunan University Department of Civil Engineering water supply and drainage Engineering, Bachelor of Science Calendar, and now Shenyang Institute of Architectural Engineering Department of Urban and Environmental Engineering professor, associate professor. Preparation of textbooks 5, published more than 50 papers, 5 national patents, and Shenyang Institute of Control Design jointly developed emulsion purification machine as Shenyang Science and Technology Achievements, leading at home and abroad. Address: Shenyang Institute of Building Engineering Department of Municipal and Environmental Engineering Zip Code: 110015 Tel: 024-24514172 (H)