Multifunctional Pump Control Valve
1, uses
Installed in the pump outlet pipe Road, both electric valves, reversed water valves and water hammer eliminator three kinds of functions, effectively improve the safety and reliability of water supply, water supply engineering equipment in line with the requirements of mechanization and automation.
2, Features
1, eliminating water hammer and high reliability. Kai slowly closing devices, closed-chain movements are related to kick Edition; automatically closing speed, without the actual pump flow, head fluctuations, the calculation of time without closing speed; without professional and technical personnel on-site adjustment; without any electrical appliances, as well as hydraulic components, fewer failure points.
2, eliminating water hammer effect is good. Will be closed fast, slow to absorb water hammer device closure, as well as the elimination of three who is blowing the technical principles of integrated design, so that less water hammer pressure pump shut down to the lowest limit.
3, operation and easy maintenance. Just pump operation of the hoist motor starter button, the valve that the pump operating procedures in accordance with automatic opening and closing. The key parts are all made of high-quality materials, and basic maintenance-free.
4, energy-saving effect is good. Use of streamlined, body models and the latest patented technology design, and import similar products, compared to reduce the resistance loss of more than 50%.
4, the structure (Figure 1)
Multifunctional pump control valve is from the main valve and the appearance of annexes, the main valve from the valve body, diaphragm (piston-cylinder), stem component, the main valve plate, valve seat and other major components composed mainly controlled exterior accessories valves, filters, emptying valve, micro valve, which valve is specially designed micro-parts, in their only set back to the direction of flow of holes is limited.
2, manual operation of hoist
In pump operation, the first manual control patch connectivity control room (piston-cylinder) control valves and venting valve, so that the pressure P3 or P4 equal to zero, a one-way pressure diaphragm pressure plate or piston can check the valve plate open and close of . The valve is turned on, due to slow-closing valve plate up, the main water valve plates have been cast aside and the realization of open movements; valve is turned off, slow-closing valve plate promoting the valve plate closed.
6, installation considerations (Figure 4)
General Note:
1, the installation, be sure to check whether the various components of the main valve intact, solid pieces of complete, no loose.
2, check the connecting pipe intact, joint fastening.
3 ensure that the minimum pressure to meet the technical parameters required action.
4, the best way is to install the valve installed on the level of the main pipe, valve cover upward.
5 that if the main valve installed in the overcast wells should be prepared to stay a certain space for maintenance and technical personnel.
6, the installation, please note that outside the arrows indicate the direction of valve shall be anti-loaded.
7, such as to conduct and observe the pressure regulator, pressure gauge shall be installed in the import and export side.
8, for the fire to start the inspection on a regular basis, to prevent the generation scale, resulting in valve failure.
Particular attention to matters:
1, installation, pay attention to check the cleaning pipes, without welding slag, bolts and other foreign matter.
2, pipe installation should be installed into the regulatory requirements relating to exhaust valves and other devices to ensure that disruption does not produce the water column.
3, valve imported paragraph shall be installed expansion joints flexible joints or pipes.
4, there are potential hazards of water hammer pumping station, pump shut down should be carried out calculation of water hammer.
7, commissioning steps
2, manual operation test:
(1) Kai pump key to whether the observation of the leaking valve import and export of pressure are normal.
(2) to open, the control valve (14) closed; emptying valve (15) closed, and then emptying valve (7) to open, then there is air or water discharge, indicating valve plates are open; valve plate to open in place, emptying valve (7) does not flow out, then the proof of justice is open; valve plate to open in place, emptying valve (7) does not flow out, then the proof of the piston-cylinder diaphragm intact; emptying valve (7) is still flowing out, then the membrane film damage.
(3) the valve manually shut down: The pipe on the bypass control valve (2), closed, control valve (14) open, exhaust valve (7), closed, and then emptying valve (15) open, then there is water discharges, slow-closing valve plate to promote the main valve plate closed; in the absence of water from the time that valve plate has been completely shut down. If the valve plate after the closure of emptying valve (15) is still flowing out, then we can see diaphragm seat (cylinder) and pass sets have been leaked (ie, pass bearing the "O"-rings have been damaged).
From the above two actions can be tested headstock stem movement is a reliable group of two. Tightness of the closure of valve plate check valve plate can be closed or observe whether there are water pipes sound meter.
3, stop pump slow closing time to adjust:
Closing time can be slow to stop pump by regulating the control valve on the bypass pipe (14) opening to regulate, should make fun of first control valve to extend the closing time delay. Into the slow closing time is too long, it will control valve (14) of the opening increases, or increasing the connecting pipe diameter; or slow closing time is too short, you can control valve (14) of the opening tune small.
If abnormal, please click Table 2 approach or directly with the company.
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