1, how to pass judgment on the channel press channel plate is positive or negative, the first is “see”. Most importantly, we should see whether the outer layer of the channel plate is level, regardless of whether the surface is smooth, and no wrecked checks or imperfections can show up. Specifically, the edge of the channel plate should be smooth and level, since it is a significant piece of the channel press chamber that can be fixed. In the event that these fundamental conditions are not met, then, at that point, the channel plate is a truly unacceptable item.
Due to the high interior strain of the channel press during activity, it is critical to limit any filet marks in the recessed pieces of the channel plate. This forestalls the channel plate from breaking because of the solid strain in the channel press.
A decent channel press plate will just have a weak polyethylene smell and won’t have an impactful or solid scent. Assuming the channel press channel plate has a solid sharp scent, it implies that the channel plate might be made of reused squander material which is again liquid and cast in the crude channel plate, likewise got back to the natural substance, the general channel plate blended in with back to the unrefined substance won’t be unadulterated white, there will likewise be plausible that an excessive number of added substances are included the assembling system.
A decent channel board resembles a piece of jade since polyethylene shapes a film on the outer layer of the channel board. At the point when you contact it, there ought to be no residue coming out.
The above is “multiple ways of passing judgment on the nature of the channel press channel plate” for your reference, there is additionally the channel press channel plate attempt to pick white, in light of the fact that the channel plate blended in with unrefined substance will have a various shading, the quality and administration life will be significantly diminished.
Plate and edge channel press is a sewage treatment framework for slime treatment hardware, is a typical gear in the slop treatment process, this article for the plate and casing channel press to do a point by point presentation and replies, for example, plate and edge channel press questions can be to the Dirt Top people group trade association!
1、The guideline of plate and casing channel press
The plate and casing channel press is made out of five significant parts: channel press plate, water powered framework, channel press outline, channel plate move framework and electrical framework. The rule of the plate and edge channel press is somewhat basic, initially, the water driven strain is applied to the plate and casing bunch, and the silt enters from the center and is dispersed between the channel materials. Because of the pressure of the plate and casing, the slime can’t flood and under the high tension of the screw and stomach siphons, the water in the slop leaks out of the channel material and streams into the return pipe, while the mud cake is left in the pit. Thereafter the plate and edge dumps, the channel plates are pulled separated and the mud cake falls by gravity and is pulled away by a vehicle, so the channel press process is supposed to be the last interaction in the sewage treatment process. The guideline is portrayed in the video.
The plate and casing channel press is appropriate for suspensions with an enormous or almost incompressible channel buildup. Appropriate suspensions for the most part have a solids centralization of 10% or less and a working tension of 0.3 to 0.6 MPa, with extraordinary ones up to 3 MPa or higher. The filtration region can be expanded or diminished relying upon the quantity of plates and edges utilized. The plate and edge are generally square, with an inward side length of 320 to 2000 mm, a casing thickness of 16 to 80 mm and a filtration area of 1 to 1200 m2. The plates and edges are squeezed with manual twisting, electric winding and water powered tension. The plates and edges are made of wood, cast iron, cast steel, tempered steel, polypropylene and elastic.
2、Safety activity insurances
1、When the channel press is working typically, the administrator should not put his feet, hands or head into the channel plate of the channel press or notice the belt transport or the focal tank beneath from between the cuts of the channel plate that is pulled open. It is illegal to put apparatuses on the pulling snare outline and the handle of the channel plate.
- Try not to press the switch when somebody is on the edge, rooftop or shaft.
3、The water driven piece of the channel press should be introduced with an electric contact pressure measure.
- It is illegal to wear high impact points or work shoeless, and it is prohibited to place your head or hands into the channel plate during dumping.
- It is prohibited to work the button with gloves and just utilize a wooden digging tool (bamboo sharp edge) to empty the material.
6、Check whether the working buttons are adaptable and solid and regardless of whether the unloader is synchronized before work.
7、Check whether there is any trash between the channel plates and regardless of whether there are kinks in the channel fabric before work, and tidy them up in time when found.
8、During the separating system, notice the surge of filtrate, and when harm is found, record the number and fix or supplant the channel fabric on schedule.
9、Check whether the channel plate is twisted or broken, and supplant it in time when found. When supplanting the channel plate, eliminate the filtrate ramble first.
10、Flush the channel material as indicated by the guidelines to expand the penetrability of the channel fabric and work on the effectiveness of the channel press.
11、Before halting, quit taking care of and dump every one of the materials in the channel press prior to halting, and stopping with materials is completely denied.
12、After the plate outline is slackened, one plate should be cleaned with a plastic digging tool after the slag has been released, and one more plate should be cleaned after the leftover slag has been released, and it is totally illegal not to clean the lingering slag.
13、After emptying the plate slag, when cleaning the plate edge and channel material, guarantee that the hole is clear, and don’t permit the buildup to adhere to the fixing surface or taking care of channel.
14、When stacking the plate, when the plate outline is continuing on the principle bar, it ought not be impacted, dropped and the power ought to be equally applied to forestall contacting the handle and harming the fixing surface.
15、Filtration fabric viewed as harmed ought to be supplanted on schedule. When introducing the channel material, it should be level and not collapsed to forestall harm and spillage when the plate outline is squeezed.
16、The destroyed plate and edge ought to be put away in a level spot to forestall twisting.
17、The fixing surface of the channel plate should be perfect and kink free, and the channel plate ought to be vertical and flawless with the fundamental pillar, and ought not be one-sided in front or behind, if not the squeezing activity ought not be begun.
18, dumping plate slag during the time spent head and appendages into the channel plate is totally denied.
19、Leakage of sloppy water and harmed channel fabric ought to be changed and washed on schedule, dried and stacked perfectly for bound together therapy.
20、Keep the channel material liberated from considerations and kinks and keep the outer layer of the channel plate level and smooth, and keep the handle of the channel plate daintily, and guarantee that the channel plate is released flawlessly and doesn’t veer off from the middle line of the press when squeezing.
- Examination of normal deficiencies of the plate and edge channel press
1、Damage of the actual plate
The reasons for harm to the actual plate are.
1, when the slop is too thick or dry square abandoned, it will cause the blockage of the taking care of port, as of now there is no medium between the channel plate just the tension of the water powered framework itself, right now the actual plate is exceptionally simple to make harm due long time pressure.
2、If the stock is inadequate or the stockpile contains unacceptable strong particles, it will likewise make the plate outline itself be harmed because of inordinate strain.
3、If the stream outlet is obstructed by solids or filter plate manufacturers the stock valve or outlet valve is shut when beginning, the strain has no place to spill out to cause harm.
4、When the channel plate isn’t cleaned, in some cases it will make the media spill out, when the spillage, the edge of the plate edge will be cleaned out a little channel, an enormous number of media spillage brought about by the tension would not ascent, mud be able to cake can not be shaped.
Relating to the investigating strategies.
1、Use nylon cleaning scrubber to eliminate the mud from the channel
2, complete the cycle, lessen the volume of the channel plate
3、Check the channel material, clean the seepage port, actually look at the power source, open the comparing valve and delivery the tension
4 、Clean the channel plate cautiously and fix it
2、Water drainage between the plate and casing
The primary explanations behind water drainage between the plate and edge are
1、Low water driven tension
2、Folded channel fabric and openings in the channel material
3, fixing surface with protuberances.
Water leakage between the plate and casing is somewhat easy to manage, as long as the relating expansion in pressure driven strain, substitution of the channel material or the utilization of nylon scrubber to eliminate the square on the fixing surface can be.
3、Unformed channel cake or lopsided channel cake
There are many justifications for why the channel cake can not be molded or lopsided, the stockpile of inadequate or excessively slim, or the peculiarity of blockage can cause this peculiarity. For these disappointments to research the causes exhaustively, and ultimately track down the specific issue, and afterward the suggestive treatment to tackle the issue. The principle arrangements are: increment the stock, change the cycle, work on the inventory, clean the channel fabric or supplant the channel material, clean the blockage, clean the stockpile opening, clean the waste opening, clean or supplant the channel material, increment the strain or siphon power, low-pressure start, and continually increment the tension and different strategies.
4、Sluggish activity of channel plate or simple to fall
Now and again an excessive amount of oil and stain on the directing bar will likewise cause the channel plate to be delayed in real life and even tumble off. This time we should clean the aide pole on schedule and apply oil to guarantee its lubricity. One thing to note is that it is totally prohibited to spread slender oil on the aide bar, on the grounds that slim oil is not difficult to tumble off to make the lower side exceptionally tricky, staff working here for support is extremely simple to fall, causing individual injury mishaps.
5、Failure of the water driven framework
The water driven arrangement of the plate and edge channel press fundamentally gives pressure, when the oil cavity An is loaded up with more oil, the cylinder moves to one side and presses the channel plate to close it. At the point when the oil hole B is loaded up with more oil, the cylinder moves to one side, and the channel plate is released. Because of the accuracy of the assembling, pressure driven framework disappointments are uncommon and can be addressed with routine upkeep. By and by, because of mileage, oil holes will happen after each year or so and the O-ring should be fixed and supplanted. Normal water driven disappointments incorporate inability to keep up with pressure and ill-advised development of the pressure driven chamber. Causes can not keep up with the tension of the primary reasons are oil spillage, O-ring wear and solenoid valve doesn’t work as expected, the normal treatment is to eliminate and actually look at the valve, supplant the O-ring, cleaning and really taking a look at the solenoid valve or supplant the solenoid valve. Water driven chamber impetus isn’t reasonable is clearly air is fixed in the inward, then, at that point, as long as the framework siphoning can be, by and large can be immediately settled.
6, channel cake and channel material from terrible
(1) check the liquidity or grouping of the channel material has not changed, for example, liquidity or fixation isn’t typical, it is important to expand the filtration time, lessen the dampness content of the channel cake, with the goal that the channel cake and channel fabric from great;
(2) Check whether the dose is suitable, change the measurement;
(3) Check whether the limit and tension of the feed siphon are appropriate, in the event that not, go to lengths to change the filtration time and other handling measures;
(4) Filter material remaining together, causing the mud cake can not be dumped typically, the channel plate or pressure plate on the two sides of the lower part of the channel fabric integrated, the channel fabric and channel plate arrange, so the mud cake dumped without a hitch.
7、Insufficient filling of the channel chamber or void chamber
Deficient filling of the channel chamber or void chamber will prompt strain lopsidedness on the two sides of the channel plate, and the tension contrast between the different sides will cause the channel plate to be obliterated, causing this shortcoming is generally a channel blockage, the inward slime channel of the plate outline and the ooze pipeline of the stomach siphon ought to be checked, the normal blockage is a little piece of cloth or channel fabric collapsed to obstruct the opening, or the muck thickness is excessively huge, and the pipeline is impeded because of no backflushing pipeline when the channel press is halted.
8、Folding of channel material
Mud cake connected to the channel fabric (inadequate mud release), or lacking pressure of the channel material suspension spring, will make the channel fabric overlap, should clean the channel fabric, supplant the spring, and reestablish the channel fabric to a level state.
At the point when the channel fabric is harmed, the mud attacks the channel plate from the burst and is released from the power source opening all things considered, making the filtrate turbid, when filtration can’t be done, the channel material at the power source of the turbid fluid ought to be checked and fixed or supplanted with another channel material.
4、Repair of the channel plate
The rebuilding innovation of the channel plate is as per the following:
Following a couple of long stretches of utilization, for reasons unknown, the channel plate is cleaned out at the corners for certain sections. When the gouges show up, they will extend quickly until they influence the arrangement of the channel cake. At first the channel cake turns out to be delicate, then, at that point, it transforms into a semi-ooze lastly the cake can’t be framed. Because of the extraordinary material of the channel plate, it is hard to fix and must be supplanted with another one, which brings about an intense usage of extra parts. During this period, we attempted some fixing specialists, however the impact has not been great. As of late, the circumstance at last pivoted when the oil surface fixing specialist was utilized all things considered, and the preliminary impact was generally excellent, and the fixing impact was accomplished.
Explicit fix strategies are as per the following.
1, tidy up the score, releasing new surface to, accessible little saw cutting edge, and so forth tidy up
2, high contrast two fix specialist as per the 1:1 proportion of the sending of good
3, the organization of good fix specialist covered ready, covered with a marginally higher
4, immediately set the channel material, the channel plate pressed together, with the goal that the fix and channel fabric remain together, while crushing level notches
5、After pressing for a while, the glue will be normally framed and never again change, when it very well may be utilized ordinarily.
5、Cost examination with other channel presses
If the crude water to be dealt with is 2000m3/day and the sewage treatment plant creating 8-10 t/d dry slime is moved into a mud-water combination with a strong substance of around 3% (there will be contrasts in suspensions in various businesses and distinctive treatment processes), it is around 300m3/day of mud-water blend; utilizing an axis with a plan limit of 4-15m3/h, the manufacturing plant cost is around 100,000/set. A one meter belt channel press is something like 100,000, it has a treatment limit of around 4 to 12m3/h. A 120m2 programmed pull plate type plate and edge channel press costs almost 100,000, and its handling limit is around 3 to 10m3/h.
a. Flocculant utilization
In the axis, because of the enormous radial power field, the fine ooze can likewise be isolated from the water, so how much flocculant added is little, and the general dosing sum for blended ooze dewatering is around 1.2 kg/tds, the slime recuperation rate is over 95%, and the water content of the mud cake subsequent to dewatering is 65% to 80%; while the belt channel machine, to further develop the handling limit, the channel belt can’t be woven too thickly, and to keep the fine slop from spilling out of the net, it is important to In request to keep the fine muck from spilling out of the net, more flocculant is added to make the ooze structure bigger flocs, and the general dosing sum for blended ooze dewatering is more prominent than 3 kg/tds, the ooze recuperation rate is around 90%, and the water content of the mud cake in the wake of dewatering is around 80%.
The measurement of the decanter axis dewatering machine is considerably more affordable than that of the belt channel press, and the atomic load of the medications utilized in the decanter rotator dewatering machine is low and modest, while the sub-atomic load of the medications utilized in the belt channel press is high and costly. A one-meter belt channel press labors for eight hours every day with a measurement of four to five kilograms; a 355 decanter axis dewatering machine labors for eight hours per day with a dose of a few kilograms, contingent upon the ooze, and the rotator can even accomplish better treatment results for some materials without adding drugs. For instance: paper making, fleece turning, acetylene gas slag, human stockpiling excrement, mine following sand and other coarse particles effortlessly hastened materials, don’t require flocculants, while the belt channel press can not; this enormously lessens the dosing and handling costs.
b. Power and water utilization
The power utilization of the axis being used is three to four kilowatts higher than that of the belt type machine, which is 30 yuan more each day as indicated by the computation of eight hours of work each day. The axis, then again, doesn’t need water flushing during the whole dewatering process. Simply a modest quantity of water is utilized to flush the inward depression when closing down. A one-meter belt channel press, then again, expects sixty to seventy cubic meters of water each day for discharging of the channel belt. The discharge water is then gotten back to the sedimentation tank for reprocessing, which expands the expense by somewhere around 150 yuan each day at an expense of 2.5 yuan per cubic meter of water, while the discharge cost is considerably higher with regular water, which saves 120 yuan each day and no less than 40,000 yuan each year. The plate and edge channel press needs to clean the channel material in the wake of handling the slime, if not it will influence the handling impact and develop the handling time, which is tedious and difficult.
c. Work utilization
The decanter axis has low work power, high mechanization, basic activity, and one individual can oversee 2 to 3 units simultaneously; the belt channel press has convoluted activity and high specialized necessities for working specialists, by and large 1 to 2 individuals oversee 1 to 2 units; the plate and edge channel press has basic activity however high work force and helpless work space conditions, for the most part 2 individuals oversee 1 to 2 units, and the treatment of working laborers requires high treatment. In the event that the computation depends on 80 yuan for each individual each day, the decanter rotator is 80 yuan each day, the belt channel press is 160 yuan each day, and the plate and casing channel press is 100 to 160 yuan each day.
3、Use and support cost
The decanter centrifuge dewatering machine has few wearing parts, only the V-belt and bearings will be damaged, such as replacement is only a few hundred yuan; the belt filter press has many wearing parts, because of the characteristics of open operation, the rotating shaft, gears, bearings and filter belt are corroded by the sewage and running wear and tear, easy to damage, repair and replacement needs thousands or even tens of thousands of yuan; the plate and frame filter press filter cloth will be broken, replacement also needs a few thousand yuan.