Preparation of hydraulic diaphragm metering pump

Hydraulic diaphragm metering pump commonly used single independent parameters provided to the user. Can also be based on user needs to create the same frame with the specifications of the multi-joint portfolio or a different seat of different specifications. Multi-type for the process required a variety of media distribution ratio. The pump can be widely used in petroleum, chemical, textile, food, paper, nuclear technology, power plants, plastics, pharmaceuticals, water plants, environmental protection and other industrial and technology sectors. Used to accurately and quantitatively deliver solids without solids to pressurized or atmospheric vessels and piping. The flow can be switched on (or set) from 0-100% range stepless adjustment. (According to the characteristics of the metering pump, the minimum stroke is generally not less than 10% of the total travel> Single cylinder pump for a single liquid occasion; Combination pump can be used as a proportional pump can also be used in parallel; Pump combination can be used as a three- Can also be three pumps in parallel, in order to achieve greater displacement, increasing the pulse frequency of the liquid, to promote liquid continuous smooth to join; hydraulic diaphragm metering pump with two adjustment methods: First, change the pump plunger stroke length, Or running status. Measurement accuracy of less than 1% of soil for the manual adjustment of the scale, micrometer to indicate the plunger relative stroke value. Second, the use of variable frequency motor and inverter combination, changing the input frequency of the power to adjust the pump speed, change the flow size. This method is suitable for automatic, remote control and computing management regulation. Preparation before operation: 1. The metering pump should be mounted on a sturdy, special-purpose foundation that is tightened to anchor bolts after calibration and should be 100-150 mm above the ground if installed on a concrete foundation. 2. Connecting pipe should be installed measuring instruments. 〔Such as pressure gauge, user-owned). 3. Suction pipe ends should be equipped with filtering devices. (User-owned also can be ordered as my company). 4. Electrical control equipment should be installed as far as possible in accordance with the use of the pump work place (not related to the premise of safety), electrical control equipment should be installed with the transmission medium corresponding control and protection devices to ensure safety. 5. Inhalation and discharge pipe diameter should not be less than the import and export pipe diameter, suction pipe should be as short as possible. If the suction line is too long or too many elbow joints, should be conducted NPSHa accounting. To meet the requirement of net positive suction head. 6. Discharge pipe should be equipped with safety wide or safe overflow width and back pressure (user-owned) If you want to reduce the exit pressure pulse, can be set in the nearest pump discharge voltage regulator. (User-owned). 7. Other technical requirements of the metering pump installation should be consistent with "Mechanical Installation and Acceptance Code" TJ231 (E) -78- in the relevant provisions.