This document provides information about Zhengzhou Uniwin Filtering Equipment co.,ltd and their various types of filter presses. It describes the features and advantages of recessed plate filter presses over plate and frame filter presses. It also explains the different types of filter presses based on pressing method (manual, mechanical, hydraulic), liquid outflow (open stream, hidden stream), and other factors. Installation, operation, maintenance and troubleshooting of the equipment is covered. Diagrams are provided in appendices to illustrate principles and processes.

1. Zhengzhou Uniwin Filtering Equipment co.,ltd
Add:No.10 Hanghai road,zhengzhou, 450000 China
Tel：0086-135-23551603
Web: www.press-filter.com
Filter press

2. Filter press
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Content
1,Preface …………………………………………………………………………………2
2,Overview ……………………………….………………………………………………2
3,feature of filter press …………………………………………………………………2
4,type demonstration ……………………………………………………………………3
5,type of filter press ……………………………………………………………………3
6,equipment installation …………………………………………………………………5
7,operating principle ……………………………………………………………………5
8,Technical piping installation and operating procedures ……………………………6
9,Each filter press instructions………………………….….……………………………6
Filter press for jack clip instructions…………………….………………………………7
Mechanical filter press…………………………………….….….………………………8
Hydraulic pressure filter press…………………………….….…………………………8
Program-controlled automatic filter press………………………………………………9
Membrance filter press …………………………………………………………………10
10,Filter …………………………………………………………...………………………11
11,Note ……………………………………………………………………………………12
12,Safety operation………………………………………………………………………12
13,repair and maintenance and matters needing attention …………………………13
14,Main fault and elimination method ………………………………………………14
Appended drawings
1,filter press erection diagram …………………………………………………………16
2,filter cloth installation diagram ………………………………………………………16
3,recessed plate,open stream and washing principle diagram ………………………18
4,recessed plate,hidden stream and washing principle diagram………………………19
5,plate and frame,open stream and washing principle diagram ……………………20
6,plate and frame,hidden stream and washing principle diagram ……………………21
7,Mechanical filter press principle diagram ………………………………….…………22
8,Hydraulic pressure filter press principle diagram ……………………………………23
9,mechanical press electrical principle diagram ………………………………………24
10,Hydraulic pressure electrical principle diagram ……………………………………24
11,Program-controlled automatic electrical principle diagram ………………………25
12,Piping and using diagram ……………………………………………………………26
13,Program-controlled automatic filter press debugging diagram ……………………27

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Preface
The correct installation and using of filter press, maintenance carefully and strictly comply with the safety rules is the necessary conditions to improve the use efficiency of the equipment,prolongs the service life of the equipment and ensure safely in production. So the operator should master the correct method of operation, should also be familiar with the basic structure and filter principle, in order to improve production efficiency and avoid unnecessary equipment accidents or damage.
At present, our company production of recessed plate filter press, plate and frame filter press and the membrance filter press and others series. The recessed plate filter press has more advantages than the plate and frame filter press. In the practical production mainly using the recessed plate filter press. The specification is based on recessed plate filter press operation characteristics and preparation, but the plate and frame filter’s working principle is basically similar with recessed plate filter press, so it can reference.
Overview
Filter press is used the differential pressure on both side of the filter cloth, forcing the most water of material through the filter cloth, outflow of the machine, and the materials were blocking by the filter chamber to be filter cake, in that way , to achieve the purpose of filtering. Because during the filtration, there is a large pressure difference in both sides of filter cloth, so improves the filtering speed and reduce the cake moisture rate, and the use of special filter cloth, the filtrate is pure, the filtering effect is match better than the vacuum filter.
Filter press have a good effect even in processing difficult filter material,
It is easy to be embalmed, and has the simple structure, convenient operation, low price compared to other filter. So selected filter as dewatering equipment is your best choice.
At present, filter press has been widely used in chemical, pharmaceutical, metallurgy, ceramics, pigments, dyes, sugar, cement, silicate and other industrial sludge dewatering etc.
Feature of filter press
Our company’s filter plate adopts reinforced polypropylene a molding, with corrosion resistance, firmly structure,stability of the machine frame, the machine aesthetic appearance, economical and practical , and has the following advantages:
1,Cylindrical point filter board, before this, the filter board is straight type or article with type water flow, the actual water area is 50%, While the cylindrical point filter board our company used, not only increased the effective water area, but also make the filtrate by any direction, so as to shorten the process, improve the filter speed.
2,The feeding port in the middle of the filter board, big pore size, small resistance and strength evenly each place, suitable for all kinds of difficult filter materials, especially the user feels very convenient is designed the filter cloth is not the three

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pieces of clip set, and use direct suture, will come together in the filter cloth both
convenient and economical durable.
3,The filter board using reinforced polypropylene materials, with chemical stable
performance, corrosion resistance, acid and alkali resistant, salt resistant, non-toxic
and tasteless, light weight, high strength, good toughness, good unloading
operation,low intensity of labor.
4,The machine frame design is reasonable, both smart and useful, operation
process of the trip back into, hydraulic and electrical combination of joint action design,
greatly reduce the labor intensity, and by using the contact monometers is to realize
the pressure, with easy operation, steady operation, structure and reliable and so on.
5,Adopting the membrance filter board, after the end of the filter, to the diaphragm
chamber access to air filter cake for extruding, make more fully dehydration of filter
cake, reduce the moisture content of filter cake. Particularly suitable for higher
requirements of filter cake’s moisture content or difficult to dehydration material. And
also can improve the production efficiency.
6,According to the needs of users, our company can also produce automatic
pulling plate filter press, it saves the manual pulling plate discharge trouble. Truly save
time, energy effect.
type demonstration
B-washable，K-unwashable
filter plate materials U-plastic，X-rubber，--cast iron
filter plate frame size
，in brackets
is box sizes
（mm)
filter cake thickness（mm)
filter area（㎡）
pressing mode S-manual，Q-jack clip，J-mechanical，Y-hydraulic，Z-automatic
M--open stream，A--hidden stream
B--plate and frame，X--recessed plate
type of filter press
1,According to the filter element of filter chamber, filter press can be divided into
recessed plate filter press and plate and frame filter press. Pate and frame filter press
is composed of filter frame and filter plate to be a basic filter unit. It has the following
structure:

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feed opening
dischanging
Its advantage is installation of filter cloth and after unloading filter cloth are clean
convenient, but because other defects has gradually be replaced by recessed plate.
Recessed plate is put the filter
frame and filter board of plate and
frame filter press into a basic
filtration unit, its structure as right:
2,Recessed plate compared
with plate and frame plate has the
following advantages:
1,Filter structure strength, not
easy to be damaged, can bear
higher filtration pressure. General frame filter pressure less than or equal to 0.4Mpa,
recessed plate filter pressure less than or equal to 0.6-0.8Mpa.
2,Convenient operation. In the unloading process only needs to pull the recessed
plate, save half the time than the plate and frame filter.
3,Recessed plate filter : the feeding is in the middle of the plate , aperture is not
easy to jam. Plate and frame filter: the feeding is located in the upper part of the filter
board, smaller than the recessed plate filter’s aperture, long filtration process, easy to
cause the bias damage filter board.
3,According to press the different ways, filter press and can be divided into filter
press for jack clip, mechanical filter press and hydraulic pressure filter press. In
practical applications, for filter press for jack clip in the work of large labor intensity, no
pressure display, only applies to a small area of the filter press.
filter press for jack clip characteristic is simple in structure, convenient in operation,
no power, but used in larger area of the pressure on the filter was easy to leak, so only
commonly used for filtering area of 1-40 square of filter press.
Mechanical filter press characteristic is easy to operate, low labor strength,
suitable for 10-100 square meters of filter press.
hydraulic pressure filter press characteristic is easy operation, low labor strength,
high efficiency, apply to filter the area bigger filter press, is commonly 4-500 square
meters or more.
4,According to the liquid outflow is divided into open stream and hidden stream.
Hidden stream filter press is refers to the filtered through a clear liquid flow and
then through the mouth to mouth with liquid connected directly to the pipe line
intended location (see chart 4, 6).
Hidden stream filter press used in volatile, toxic, stimulating odor or corrosive and
not allowed exposed of the filter material.

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The open stream filter press is to point to the filter liquid is not pass through a clear liquid mouth outflow, but from each filter plate water tip directly (see chart 3, 5).
The open stream filter press has the advantage of easy to see if there is any breakage, in the filter, if you notice a piece of filter cloth damaged (average performance of the mixed liquid), as long as the tip is closed, still can continue to filter, after a work cycle ends then can change or repair the filter cloth.
5,According to the filter cake whether to need washing, can be divided into can wash filter press and do not wash filter press. In addition to filter cake is required to be washing outside, average all choose not wash type.
6,According to different needed water content of filter cake, can be divided into optional blow air filter press and don't blow gas filter press. In addition to filter cake that really need to be very dry average all don't choose the blowing type.
7,The company is also available to users make high temperature resistant glass fiber gathers splendid alkenes filter board and resistance to high temperature, high pressure of cast iron, nodular cast iron and stainless steel filter board.
Equipment installation
1,Filter press should be installed horizontally in concrete foundation in structure, installation the basis should use two grouting. (Note that the push board at the bottom use of stents bolt, oil cylinder should not be fixed, not pack cement) To ensure that the filter press stay freedom under press cases. Considering the pressure filter in when unloading is easy to operate, rack should stay around about one meter of space. Filter press installation should be far away from source of corrosion. Avoid rain and sun.
2,Take good power supply, three phase four lines. Motor clockwise to run, reverse pumps don't work.
3,Open air cleaner into 76 # or 46 # hydraulic oil, oil surface height to observe from the mirror doesn't touch the motor cover is accurate, for the lower limit of not less than 40 mm for motor cover. When the first time when the oil pump motor on should be initiated, let the piston rod after moving back and forth, and then add another. The initial pressing before release cylinder pressure gauge, discharge the air in cylinder
4,Feeding tube should install reflow pipe, stop valve and pressure gauge (see figure eleven). High pressure oil pipe with low pressure pipe shall not be reversed.
5,Each filter board mount filter cloth flatly, filter cloth thickness should be close to 1.5 mm, its material by the user according to the production needs and not leak slurry principle to purchase and production (see figure two).
6,Feeding pump general selection pneumatic diaphragm pump or screw pump
a,Pneumatic diaphragm pump will have gas, and air pressure is greater than or equal to 0.8 Mpa, and equipped with a pressure relief valves. Pump and sludge pond and filter press direct link to. In the press filter material entrance should be installed 0-1.2Mpa pressure gauge, in order to observe the filtration pressure.
b,Screw pump or other sludge pump, the filter materials import shall be installed in the pipe backflow system (backflow preventer, backflow tube) and in the press filter materials imported pipes installed in 0-1.2 Mpa pressure gauge.
7,If many sets of filter press share a hydraulic pressure station, should put all of the hydraulic cylinder parallel in together, and in and out of the pipe installation globe valve, in order to prevent the filter press appear linkage phenomenon (hydraulic

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principle (see figure seven).
8,After all the installation is completed, should carefully check filtering system and pipeline is in accordance with the requirements, confirmed before they can be put to use.
Note: Filter press for jack clip can be omitted 2, 3 two.
For more detailed operation manuals,please visit www.press-filter.com or contact us at :bruce@press-filter.com