Significance of channel plates
The channel plate is the center sifting component of the channel press. The diverse material, structure and nature of the channel plate will straightforwardly influence the separating execution of the entire machine, its taking care of breadth, the dispersion of the sifting point (sifting channel) and its release channel, and there are distinctive plan answers for various materials. The material of “Jingjin” brand channel plate is imported TPE elastomer and high strength polypropylene, which makes the channel plate both adaptable as elastic channel plate and extreme and unbending as polypropylene channel plate, so the fixing execution of the channel plate is better when it is squeezed, and all specialized records of Jingjin channel plate are created by EU standard. “Jingjin” brand polypropylene high tension stomach channel plate with a greatest drum strain of 4.0Mpa addresses the most noteworthy driving level on the planet.
- Regarding the channel fabric
1) Filter fabric material
Polypropylene channel material: the benefits are smooth surface, less burr, great air penetrability, great partition of channel fabric and channel cake, medium corrosive and antacid opposition.
Polyester channel material: the benefits are solid corrosive and soluble base obstruction, great flexibility and recuperation, great wear opposition, great hotness opposition and disfigurement steadiness. The hindrance is that the electrical conductivity is exceptionally poor.
Nylon channel material: the benefit is that it is impervious to solid salts and feeble acids, and is the most wear-safe, with multiple times more wear obstruction than cotton strands. The burden is that it isn’t impervious to light and is effortlessly stained and fragile, so nylon texture ought not be presented to daylight for quite a while, while its synthetic properties are unsteady and can undoubtedly deliver hints of hurtful substances, so it can’t be utilized in food handling and different enterprises utilized for the human body.
Vinylon channel texture: the benefits are solid antacid opposition, great scraped area obstruction, consumption opposition, toughness of 1-2 times more than cotton, and solid dampness retention. The hindrance is that it isn’t impervious to high temperatures, the sifting temperature can’t surpass 60°, the temperature will recoil assuming it comes to 100°, and it isn’t corrosive safe.
The genuine choice cycle can be founded on the accompanying standards: as per the synthetic properties of the filtrate, for example, acridity and alkalinity to pick, the most grounded corrosive opposition is polyester channel fabric, the most grounded basic obstruction is vinylon channel material, corrosive opposition, alkalinity in the center is polypropylene channel fabric; as per the temperature of the filtrate to pick, high temperature obstruction is polyester channel material; as indicated by the stripping execution of the channel slag to pick, the best partition impact is polypropylene channel material; as per the state of the channel slag, molecule consistency, hardness, according to the point of view of wear protection from pick, great wear obstruction is polyester channel material and nylon channel fabric.
There are four sorts of yarn structure: staple yarn, fiber (compound yarn), monofilament and compound yarn. For the normal kinds, polypropylene and polyester have staple yarn, fiber (compound) and monofilament, while nylon has fiber (compound) and monofilament types; Vylon has just one sort of staple yarn.
The twist and weft of monofilament yarn is a silk, the surface is smooth, difficult to obstruct, air porousness, water penetrability, and the channel cake is not difficult to strip off and recover, higher filtration effectiveness, simple to dump, and rare cleaning, long assistance life. The twist and weft of fiber are comprised of various strands woven into one fiber, which has a superior maintenance impact on fine particles. Under the reason of meeting the necessities of filtration accuracy, the impact of monofilament channel fabric is superior to fiber channel material. Monofilament channel material is generally utilized for channel proceeds sewage.
(3) Filter fabric weaving strategy
Normal channel fabric weaving strategies are: plain, twill, glossy silk. Plain, the most thick, little pores, great molecule capture attempt impact, clear filtrate, yet opposition, simple to filter plate manufacturer obstruct, difficult to dump slag; twill, among plain and glossy silk, solid enemy of grating, sifting speed, long assistance life, generally utilized; silk, huge pores, difficult to impede, great ooze stripping impact, yet helpless molecule interference impact, turbid filtrate.
Slime in the channel press process, the channel fabric to over and over channel press process should have a specific ductile, compressive strength, that is, the mechanical properties of the channel material to be great. As slop molding process, to mix it up of synthetic compounds, like PAM, lime, iron salt, and so on, as a general rule, after the molding of the slime is for the most part antacid, so the channel material should be great erosion obstruction, with soluble base opposition. The ooze is generally natural ooze with little particles, so the channel fabric needs to have great sifting execution, which can rapidly eliminate the water from the separated material, and furthermore difficult to hinder, for example great slop stripping execution. The channel fabric is not difficult to clean and recuperate rapidly after filtration, along these lines broadening the help life and lessening costs. In outline, i.e.: high mechanical properties, consumption opposition, quick and clear filtrate filtration, difficult to obstruct, simple ooze stripping, long life, so the computation, polypropylene monofilament twill channel material is a decent decision.
- With regards to the channel plate
1) Filter plate material
Elastic channel plate: great flexibility, yet helpless strength.
Aluminum channel plate: the lightest of the metal channel plates, however helpless corrosive obstruction.
Cast iron channel plate: significant burden, helpless corrosive obstruction, high temperature opposition.
Hardened steel channel plates: great protection from acids and salts, however exorbitant cost and long handling time.
Polyvinylidene fluoride (PVDF): great corrosive obstruction and high temperature opposition, yet exceptionally helpless salt opposition.
Polypropylene channel plates (PP): most ordinarily utilized, with high strength and sturdiness and high scraped area opposition. Typically, TPE elastomer and soluble base free glass fiber can be utilized to upgrade and adjust the PP channel plate, so the channel plate has solid durability and inflexibility, which thusly further develops the fixing execution of the channel plate, erosion opposition, temperature obstruction up to 150℃, and pressure opposition up to 2.0MPa.
There are three types of channel plate squeezing: manual squeezing, mechanical squeezing and pressure driven squeezing. Manual squeezing is a screw jack to push the squeezing plate squeezing; mechanical squeezing is an electric engine with H-type minimizer box, through the rack drive parts to push the squeezing plate squeezing; water powered squeezing is a pressure driven station through the water driven chamber parts on the rack to push the squeezing plate squeezing. The normal one is water powered squeezing.
(3) Liquid release strategy
There are two sorts of fluid release strategies: open stream and dim stream. The filtrate is released straightforwardly from the power source opening of each channel plate, which is known as the open-stream type. The open-stream type is advantageous for observing the filtration of each channel plate, and assuming the filtrate of a specific plate is viewed as unclean, the power source of that plate can be shut. On the off chance that the filtrate from each plate is consolidated and released from the machine through a release pipe, it is known as the dim stream type. The dim stream type is utilized for the filtration of suspensions where the filtrate is unpredictable or where the filtrate is hurtful to people. It is normal to have an open-stream fluid.
4) Washing strategy
As per whether the channel buildup should be washed, it tends to be separated into two structures: launderable and non-launderable. Launderable channel presses have two sorts of channel plates, those with openings for washing fluid bay are called punctured channel plates (likewise called washing plates) and those without openings for washing fluid bay are called non-punctured channel plates (additionally called non-washing plates). Single direction washing is a blend of punctured and non-punctured channel plates put then again; two-way washing channel plates are punctured, yet the washing of two nearby channel plates ought to be stunned and can’t go through the washing fluid simultaneously. The accompanying washing designs are normal: dull stream single direction, dim stream two-way, open stream single direction, open stream two-way.
Hidden single direction stream washing: the washing fluid enters the punctured plate thusly from the washing fluid bay opening of the plug plate, goes through the channel material and afterward through the channel cake, and streams out from the non-punctured channel plate.
Dull stream two-way washing: the washing fluid is washed two times from the two washing fluid bay openings on the two sides over the plug plate, for example the washing fluid is washed from one side first and afterward from the opposite side, the power source of the washing fluid is inclining heading, so it is likewise called dim stream two-way cross washing.
Open stream single direction washing: the washing fluid enters the punctured plate from the washing fluid bay opening of the plug plate, goes through the channel material and afterward through the channel cake, and streams out from the non-punctured plate.
Two-way washing: The washing fluid enters the openings from the two sides over the plug plate and is washed two times, for example first from one side and afterward from the other.