What is the principle of vacuum belt dehydrator

Principle: The purpose of dehydration is achieved by vacuum sucking slurry. The slurry is fed into the filter cloth of the vacuum belt dehydrator, which is conveyed by means of a heavy-duty rubber belt with a transverse groove and a through hole in the middle to allow the liquid to be drawn into the vacuum chamber.

The filtrate and air are pumped to the vacuum main at the same time, and the filtrate enters the gas-liquid separator in the vacuum filtrate collection tube.

For gas-water separation, the top outlet of the gas-liquid separator is connected to the vacuum pump.

Connected, the gas is pumped out of the vacuum pump. The separated filtrate enters the filtrate receiving tank through the bottom outlet of the gas-liquid separator. The slurry is suctioned by vacuum through the forming area, washing area and drying area to form a qualified filter cake, and then sent to the discharge chute in the unloading area and sent to the gypsum warehouse by the transfer belt conveyor.

Vacuum belt dehydrator is also called fixed vacuum chamber rubber belt filter; It is a new, efficient and continuously operated solid-liquid separation mechanical equipment developed on the basis of introducing, digesting and absorbing similar foreign product technology, and it is also a kind of mechanical equipment that makes full use of material gravity and vacuum suction to achieve solid-liquid separation; In terms of structure, the vacuum zone is arranged along the horizontal direction, and the length of the vacuum zone can be used to continuously complete different processes such as filtration, washing, and drying, which has the advantages of high filtration effect, large production capacity, good washing effect, wide application range, simple operation, stable operation, and convenient maintenance; It is especially suitable for filtering suspension slurry with coarse solid particles, high density and filter cake that needs to be washed many times, and can be widely used in solid-liquid separation in metallurgy, mining, chemical industry, papermaking, food, pharmaceutical and environmental protection and other industrial sectors; In particular, it has a good application in gypsum dehydration in wet flue gas desulfurization (FGD).

1. The vacuum box is made of FRPP, which has good anti-corrosion performance and smooth inner wall and is not easy to scale.

2. There is an annular friction belt between the vacuum box and the tape, which is sealed and lubricated with water, which can maintain a stable and high vacuum degree, which is conducive to stable operating conditions.

3. The overall structure adopts a modular design, which can be flexibly assembled, and is convenient for transportation and installation.

4. It is equipped with a steam water separator, which can realize automatic liquid discharge with zero difference or liquid discharge with high difference to meet the requirements of various working conditions.

5. It is equipped with a fully automatic deviation correction device to ensure the stable operation of the filter cloth.

6. The liquid level of the filter cake and filter cloth flushing tank is automatically controlled, and the water inlet and overflow are automatically completed.

7. Automatically adjust the speed of the belt according to the feeding amount, so that the equipment always maintains the best working condition. It is equipped with a fault alarm device.

The belt is dragged by the frequency conversion motor through the reducer and runs continuously, the filter cloth runs synchronously with the motor by the friction between the belt and the belt, the belt is in sliding contact with the vacuum box (there is a friction belt and sealing water in the middle of it, so as to seal and lubricate), when the vacuum pump works, the vacuum box under the belt forms a vacuum filtration area. The slurry is evenly distributed to the moving filter cloth through the feeding device, the slurry realizes solid-liquid separation under the action of vacuum, the filtrate (water) passes through the filter cloth and flows through the belt transverse groove, enters the vacuum box through the center hole of the belt, and then is discharged by the separator, and the filter cake (gypsum) formed after suction filtration is removed by gravity at the direction of the filter cloth, and the filter cloth and the belt are washed and regenerated when returning.

1. The vacuum degree of the desulfurization bird bucket vacuum belt dehydrator is insufficient, this fault is often seen, and it is generally checked whether the work of the real cherry blossom hollowing system has reached the normal level. There is also whether the system is leaking. 2. The speed of the equipment is too fast, resulting in a short filtration time and less water removed by filtration.

At this time, you can reduce the speed to sing the first solution. 3. The immersion of the desulfurization vacuum belt dehydrator is too large. Due to the large contact area between the bowl and the filtrate and the long time.

At this time, the thickness of the filter cake is very large, and the moisture is not easy to remove. In this case, it can be solved by reducing the speed of feeding and reducing the immersion degree of the bowl. 4. The filtration performance of the material itself is poor, just like the filtration performance of sand and lime milk is very different.

However, when filtering the same kind of items, it is generally necessary to check the cause of the filtering performance of the items in the previous process, and solve it after timely treatment.

Where is the dehydrator belt Hello dear, the bucket belt of the washing machine is at the bottom of the hanging outer barrel of the washing machine, turn the washing machine upside down to see Fengzhen smile, remove the back cover, under the runner, take off the back cover and see Lutong. Hope it helps. If my answer is helpful to you, please also give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the motivation for my progress.

Finally, I wish you good health and a good mood!

1. Take the vacuum belt dehydrator of Huakuang Heavy Industry ****rbyl-500 type Qin Mingshi as an example, with a power of 500mm and a weight of 1950kg.

2. The vacuum belt dehydrator is a device that uses vacuum negative pressure as the driving force to realize solid-liquid separation, in terms of structure, the filtration section is arranged along the horizontal length direction, and the limbs can be continuously completed filtration, washing, suction, filter cloth regeneration and other operations. The equipment has the advantages of high filtration efficiency, large production capacity, good washing effect, low moisture of filter cake, flexible use and low maintenance cost. It can be widely used in solid-liquid separation in metallurgy, mining, chemical industry, papermaking, food, pharmaceutical, environmental protection and other fields, especially in gypsum dehydration (FGD) in flue gas desulfurization.

The vacuum belt dehydrator adopts a fixed vacuum box, the tape slides on the vacuum box, and the vacuum box and the belt form a motion sealing structure. It can continuously and automatically complete the process operations such as filtration, filter cake washing, slag removal, filter cloth regeneration, etc., and the mother liquor and filter cake washing liquid can be collected in sections.

1. The service life of the filter cloth is too long, and the filter cloth needs to be replaced more slippery (the filter cloth needs to be replaced) 2. The vacuum pump runs for a long time and causes serious internal scaling, resulting in insufficient vacuum pump treatment and reduced vacuum degree (the vacuum pump needs to be descaled) 3. It is related to the slurry density of the absorption tower, and the general density of the absorption tower is within the range of 1120 1190kg m, and the gypsum is very dry, and the dehydrator will not be able to drag it out of this range. The reason why the vacuum belt conveyor is not dry when it is dehydrated may be that your dehydrator is malfunctioning. Or maybe you didn't clean the filter.

If the filter is not cleaned, the gypsum powder may not be clean, because it will not be able to get out of the excess water. That's why your current dehydrator can't be washed and dried at all.

Hello, the reason why the vacuum belt dehydrator can not be dried: this should be judged according to the actual situation, if the dehydrated clothes of the registry can be wrung out of the water by hand, it is abnormal, this situation is that the washing machine's tremor dehydration system has a problem and needs to be repaired The normal dehydration of the washing machine is not very dry, and the feel is relatively wet (especially cotton fabrics), and the water can not be wrung out by hand. After the washing machine is normally dehydrated, the clothes are not dry, but still contain a certain amount of moisture (especially the cotton fabric is relatively wet).

The national standard GB T4288-2008 "Electric Washing Machines for Household and Similar Purposes" stipulates that the moisture content of the washing should be less than 115% after dehydration of the dehydration device of the dehydration machine or washing machine. Moisture content = (quality of standard washing after dehydration - quality of standard washing in dry state before washing) Quality of standard washing in dry state before washing, so the clothes still contain a certain amount of moisture after dehydration of the washing machine, and it is impossible to completely remove the moisture of the clothes by centrifugal dehydration.

Summary. 1. Check whether the installation of the friction belt is correct and whether there is any deviation; 2. Check whether the operation of the friction belt is normal and whether there is any unstable operation; 3. Check whether the output end of the friction belt is correct and whether there is any external force torsion; 4. Check whether the transmission wheel of the friction belt is correct and whether there is any damage; 5. Check whether the tooth shape of the friction belt meets the regulations and whether there is any wear; 6. Check whether the lubricating oil of the friction belt is sufficient and whether there is oil staining; 7. Check whether the installation bolts of the friction belt are tightened and whether there is any loosening phenomenon; 8. Check whether the speed of the friction belt exceeds the specified range and whether there is any deformation; 9. Check whether the clamping mechanism of the friction belt is correct and whether there is a phenomenon that the fixation is not firm; 10. Check whether the operating noise of the friction belt is normal and whether there is any abnormal phenomenon.

1. Check whether the installation of the friction belt is correct and whether there is any deviation; 2. Check whether the operation of the friction belt is normal, and whether the sales are unstable; 3. Check whether the output end of the friction belt is correct and whether there is any external force torsion; 4. Check whether the transmission wheel of the friction belt is correct and whether there is any damage; 5. Check whether the tooth shape of the friction belt meets the regulations and whether there is any wear; 6. Check whether the lubricating oil of the friction belt is sufficient and whether there is oil staining; 7. Check whether the installation bolts of the friction belt are tightened and whether the companion is loose; 8. Check whether the speed of the friction belt exceeds the specified range and whether there is any deformation; 9. Check whether the clamping mechanism of the friction belt is correct and whether there is a phenomenon that the fixation is not firm; 10. Check whether the operating noise of the rubbing Luxiao potato belt is normal and whether there is any abnormal phenomenon.

The friction zone is broken, elongated after being replaced, 10 breaks, and after a few hours, it is broken, and a new friction zone is replaced, as above.

If the core of the friction zone is not broken and is not properly elongated after being replaced, it may break within 10 minutes. In the case of correct elongation, the time of the friction belt breakage can depend on the material and quality of the friction belt, as well as the temperature and humidity of the use environment, etc. Generally speaking, the service life of friction belts ranges from a few hours to several months, depending on the actual use conditions.

The elongation rises 30 cm within the normal range, and then the friction band falls off and breaks.

Then don't stretch it that long.

Summary. Hello, dear, I have found the following plan for you. 1.

Check the wear of the friction belt, check the location of the break, and replace it if there are obvious signs of aging. 2.Check that the friction belt is installed correctly to see if there is any abnormality in the loose idler wheel, and if this is the case, it should be adjusted in time.

3.Check whether the precision belt is installed correctly, especially whether it fits to the end; When replacing a new belt, make a crease beforehand to ensure absolute alignment of the head.

Hello, dear, I have found the following plan for you. 1.Check the wear of the friction band, check the location of the breakage, and replace it if there are obvious signs of aging.

2.Check that the friction belt is installed correctly to see if there is any abnormality in the loose idler wheel, and if this is the case, it should be adjusted in time. 3.

Check whether the precision reed belt is installed correctly, especially whether it fits to the end; When replacing the new belt, it is necessary to make creases in advance to ensure the absolute alignment of the head.

4.Check whether there is a slight deformation of the belt, the belt must maintain the specified tension, and adjust the belt tension in time to ensure the quality of fit. Talk 5

The driving wheel and idler wheel should be lubricated frequently, and the lubrication performance of their bearings and mounting bolts should be maintained. 6.Maintenance personnel should always check all parts of the belt conveyor, including driving wheels, idler wheels, friction belts and belt capacitors, etc., and should deal with the problems found in time.

Hello dear, if the friction belt of the vacuum belt dehydrator is broken, you can try the following methods: 1. Clamp the friction belt with a wooden clip and fix it with a rope to prevent the friction belt from sliding. 2. Fix the friction belt with rubber tape, and prevent the sliding of the friction belt.

3. Fix the friction belt with a heat shrinkable tube to prevent the friction belt from sliding. 4. Reinstall a new friction belt to replace the original friction belt.