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What are the requirements for swimming pool equipment selection?


Swimming pool equipment selection requirements 1 Scope of use 1.1 Water supply and drainage equipment, pipes and chemicals for various types of swimming pools built indoors and outdoors. 1.2 Water supply and drainage equipment, pipes and chemicals for water amusement pools of various types and uses built indoors and outdoors. 2 Key points for design selection 1) In the engineering design of swimming pools and water amusement pools, equipment, instruments, pipes (including pipe fittings), devices<with accessories>The following principles should be followed in the selection of chemicals and chemicals: (1) Domestic and joint venture products should meet the current quality requirements of "product standards" in my country.

(2) For foreign products, there should be a certificate of approval from the competent authority of the country where the product is produced and a test certificate of the quality of the product from the competent authority of the product in my country. 2) Hair filter (1) The finished hair filter should be used first, but detailed information should be requested to check whether the total area of ​​the filter cartridge (mesh) hole (mesh) meets the specification requirements. (2) The shell should be made of corrosion-resistant materials, such as stainless steel, glass fiber reinforced plastic or copper, etc. If it is made of cast iron or carbon steel, it should be treated with anti-corrosion treatment, painted with anti-corrosion paint or lined with anti-corrosion materials that meet hygienic requirements.

The working pressure of the shell should not be less than 0.35MPa. (3) The material of the hair filter (tube) is generally made of stainless steel, fiberglass, or high-density plastic. (4) The hair filter requires the net (tube) to be cleaned daily, so the structure of the shell should be simple, flexible in loading and unloading, and good in sealing performance.

(5) The total area of ​​the holes (mesh) of the filter cartridge (net) should not be less than 2.0 times the cross-sectional area of ​​the connecting pipe. The hole diameter of the filter cartridge should be 3-4mm, and the filter mesh should be 10-15 mesh. 3) Circulating water pump (1) The number of circulating water pumps should be configured according to the simultaneous operation of multiple pumps to reduce the capacity of the standby pump.

(2) The circulating water pump should be a swimming pool special pump made of integral copper, stainless steel or high-density, high-strength plastic with a large-volume pre-hair filter. (3) If a cast iron circulating water pump is selected, the impeller should be made of copper or stainless steel, the mechanical seal should be made of corrosion-resistant materials, and the motor should be fully enclosed. (4) When conditions permit, a low-speed circulating water pump should be used to facilitate flow adjustment and reduce noise.

(5) Measures for vibration reduction and noise reduction should be provided for water pumps and pipelines. (6) The flow velocity of the water pump suction pipe should be 1.0-1.5m/s, and the flow velocity of the water pump outlet pipe should be 1.5-2.5m/s. 4) Filter Swimming pool filter sand tank, swimming pool equipment (1) Pressure filter tank can be made of stainless steel, carbon steel, glass steel and other materials.

If the carbon steel tank is used, the inner wall is required to be painted with anti-corrosion paint or lined with anti-corrosion lining that meets the hygienic requirements. If the stainless steel tank is used, the stainless steel material should be resistant to chloride ion corrosion: when the ozone disinfection system is used, it should be The material and anti-corrosion requirements of the water distributor and water collecting device in the high-quality stainless steel (316L) tank body should be the same as the tank body. At present, the tank pressure of the finished pressure filter in the market has levels of 0.35MPa, 0.45MPa and 0.60MPa. (2) Vertical tanks should be preferred for pressure filters.

(3) The filter material of the filter is quartz sand, and polystyrene plastic balls, diatomaceous earth, anthracite, and fiber balls can also be used. Casting sand, whisk stone, etc. (4) The composition and filtration rate of the filter material should meet the requirements of the "Code for Design of Water Supply and Drainage of Swimming Pools and Aquatic Amusement Pools" (CECSl4).

(5) Thickness of the supporting layer of the pressure sand filter: it should meet the requirements of the "Code for Design of Water Supply and Drainage of Swimming Pools and Aquatic Amusement Pools" (CECSl4). (6) To select the finished pressure filter (including ozone adsorption filter), you should ask the manufacturer for detailed information, and conduct analysis and research on the uniformity of water distribution and water collection, the particle size and thickness of the filter material, and the combination of the filter material layer. Then determine the filtering speed. (7) Diatomite pressure filter ① my country currently only has a reversible diatomite filter with a filtration speed of 6-10m/h.

When the water quality requirements of the pool water are high, the lower limit value should be selected. ②The backwash water contains diatomite, and a sedimentation tank should be set up to settle the diatomite before discharge. (8) When choosing a gravity filter, you should ask the supplier for detailed product description materials and quality review certificates.

At the same time, there should be reliable measures to prevent the safety accident of the filter overflow caused by the pool water due to a sudden power failure. (9) Ozone adsorption filter ① The tank body should be made of stainless steel (316L). If carbon steel is used, the inner wall should be lined or painted with polyethylene plastic or paint. ② The filter material of the adsorption tank is generally activated carbon. When the micropore surface area is at least 1000┫/g, the layer thickness is about 500mm; the filtration rate is suitable between 33-37m/h.

(10) The ozone reaction tank should preferably use polyethylene resin glass fiber material tank body. If carbon steel is used, the inner wall is lined with or painted with polyethylene plastic or paint. 5) Dosing device (1) The dosing device is composed of a metering dosing pump, a solution tank, and a pipeline.

Dosing systems for different chemicals should be selected separately. (2) The metering and dosing pump is generally selected according to the maximum dosage, and has the function of adjusting the range from 10% to 100%. The pump body and associated fixtures shall be chemically resistant.

The dosing pump is usually fixed on the top of the solution tank. (3) The volume of the solution tank is generally calculated according to the daily dosage. The solution tank must be made of high-density polyethylene, and an electric stirrer should be installed in it.

(4) The chemical dosing pipeline should be able to resist the corrosion of the transported chemicals under the working temperature and pressure, and be clearly marked. 6) Ozone disinfection equipment (1) Ozone disinfection process mainly includes: ozone generator, ozone dosing device (water injector, pressurized pump, etc.), ozone and water mixer, ozone and water contact reaction tank, excess ozone adsorption and filtration device and exhaust gas decomposer.

(2) Ozone generators with high efficiency, high ozone concentration, stable performance, and long service life should be selected to prepare ozone by the oxygen method. (3) The ozone generator for preparing ozone by the air method should have air drying and filtering devices. In order to ensure the amount of ozone, the number of ozone generators should be more than one.

(4) There should be devices for automatic negative pressure dosing and safety assurance (such as ozone leakage detection, alarm, short circuit, cooling water and transformer overtemperature, etc.). (5) It should have chain protection functions such as booster pumps, circulating water pumps, and cabinet switches. (6) The ozone generator and dosing room use ORP to monitor the ambient ozone content.

(7) The supplier should ask for detailed information, product certification and professional qualification certificates. 7) Heater (1) The number of heaters should be selected according to the simultaneous use of 2 or more equipment. (2) When using a plate heat exchanger, it is advisable to use the full-flow heating method of circulating water. If it is a split-flow heating method, a cold and hot water pressure balance device should be installed.

(3) Each heating device and heat exchange equipment shall be equipped with an adjustable automatic temperature control valve. The adjustable range of the temperature control device should be ±1°C. (4) The heater should be made of corrosion-resistant materials such as carbon steel lined with copper or stainless steel.

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