Filter press type dewatering system, dewatering method, dewater, check valve, and opening/closing valve
A degassing device and filter press technology, which is applied in valve devices, liquid degassing, separation methods, etc., can solve the problems of mud backflow, damage to the pressure pump 12 and the piping system, and difficulty in timing control of electromagnetic switch valves. The effect of high dehydration efficiency
Inactive Publication Date: 2004-05-26
TEMJIN ECO SYST
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Problems solved by technology
[0039] But, when carrying out the dehydration process in the filter press 14, along with the rise of the pressure on the filter press 14 side, the timing control of the electromagnetic switch valve becomes difficult, when the piston 30 of the pressure feeding pump 12 enters the return process, as Mistakenly opening the electromagnetic switch valve on the side of the filter press 14 will cause the mud to flow back and produce a loud impact sound, which may cause damage to the pressure feeding pump 12 and the piping system
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[0102] 1 is a conceptual diagram showing the overall configuration of a first filter press type dehydration system 100 of the present invention, and Figure 18 The conventional dehydration system shown has a piston type pressure pump 12 , a filter press 14 , a first on-off valve 16 and a second on-off valve 18 , and an air compressor 20 . In addition, in a portion not shown, the same mud supply source 22 as above is connected to the first electromagnetic valve 18 via the mud feeding pipe 26, and the drain pipe 50 is connected to the water storage tank 24 as above.
[0103] For this dehydration system 100, it also has a flow sensor 170 sandwiched in the middle of the drain pipe 50, a pressure sensor 172 sandwiched in the middle of the mud feeding pipe 26 communicating with the second on-off valve 18 and the filter press 14, and a pressure sensor 172 sandwiched in the middle of the mud delivery pipe 26 communicated with the second on-off valve 18 and the filter press 14. A pressu...
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A filter press type dewatering system including a filter press machine, a hydraulically driven pressure-feed pump for compressing slurry introduced from a slurry supply source and driving the slurry into the filter press machine, a pressure control valve for increasing / reducing the flow rate of pressured oil supplied to the pressure-feed pump, a flow rate sensor for detecting the flow rate of filtered water discharged from the filter press machine, a pressure sensor for detecting dewatering pressure in the filter press machine, and control means of outputting a control signal to the pressure control valve in accordance with input signals from the flow rate sensor and the pressure sensor.
Description
technical field [0001] This invention relates to improvements to filter press dewatering systems. Background technique [0002] At present, in order to reduce the volume of inorganic sludge such as construction waste soil and organic sludge such as untreated garbage and sewage sludge, a filter press type dewatering system is used to pump these sludge into the filter press at high pressure using a pressure pump. In the machine, the solid-liquid separation of the mud is carried out. [0003] Figure 18 It shows an example of the configuration of a general filter press type dehydration system 10, and includes a piston type pressure pump 12, a filter press 14, a hydraulic drive source 15 composed of a motor and a hydraulic pump, and an electromagnetic control type first on / off valve 16. And the second switch valve 18, air compressor 20, mud supply source 22 and water storage tank 24. [0004] The above-mentioned slurry supply source 22 is constituted by, for example, a fluidiz...
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Login to View More IPC IPC(8): B01D25/00F04B9/107F16K1/12F16K15/02
CPCF04B9/107B01D25/005F16K15/026F16K1/126B01D25/007B01D25/164B01D25/386
Inventor 内山清二
Owner TEMJIN ECO SYST