CN111056725A - Dynamic sealing omnibearing water outlet method and device for sludge dewatering - Google Patents
Dynamic sealing omnibearing water outlet method and device for sludge dewatering Download PDFInfo
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- CN111056725A CN111056725A CN201811207461.0A CN201811207461A CN111056725A CN 111056725 A CN111056725 A CN 111056725A CN 201811207461 A CN201811207461 A CN 201811207461A CN 111056725 A CN111056725 A CN 111056725A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000010802 sludge Substances 0.000 title claims abstract description 49
- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 50
- 239000000706 filtrate Substances 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 239000012065 filter cake Substances 0.000 description 14
- 239000010410 layer Substances 0.000 description 10
- 208000005156 Dehydration Diseases 0.000 description 9
- 230000018044 dehydration Effects 0.000 description 9
- 238000006297 dehydration reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000004744 fabric Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a dynamic sealing omnibearing water outlet method and a device thereof for sludge dewatering, wherein a hydraulic cylinder is adopted to push a pressure plate to apply pressure to sludge in a filter chamber, an elastic sealing ring is arranged at the periphery of the pressure plate, and the sealing ring forms dynamic sealing between the pressure plate and the filter cylinder in the process of moving the pressure plate in the filter cylinder; the wall of the filter cylinder is provided with a drain hole, and the press plate and the bottom plate are also provided with drain holes; the drain hole on the pressure plate, the drain hole on the bottom plate and the drain hole on the wall of the filter cylinder form a structural form of omnibearing water outlet of the filter chamber. The invention has an omnibearing water outlet mode, the flow resistance of the filtrate is greatly reduced, the water outlet speed is doubled, and the treatment efficiency is greatly improved; the invention also has a dynamic sealing mode, the motion amplitude of the pressing plate is not limited, the mud filling thickness of the filter chamber can be greatly improved, and correspondingly, the treatment capacity is greatly increased.
Description
Technical Field
The invention relates to a dynamic sealing and filter chamber omnibearing water outlet method and a device thereof for sludge dewatering, belonging to the field of pressure dewatering mechanical equipment.
Background
The filter press is the main equipment for sludge pressure dehydration. At present, belt filter presses, plate and frame filter presses, diaphragm filter presses, and the like are commonly used for sludge dewatering treatment. The belt filter press clamps sludge between two layers of filter cloth, winds on a plurality of rollers, and performs filter pressing and dehydration on the sludge by means of the pressure of the rollers and the tension of the filter cloth. The working efficiency is high, but the water content is high after the sludge dehydration treatment, is 80-85%, and can not meet the treatment requirement far away. The filter plates and the filter frames in the plate-and-frame filter press are alternately superposed on two parallel supporting beams, the filtering pressure is provided by a feed pump, the filtering pressure is lower (generally less than 0.6MPa), and the achieved dehydration effect can not meet the treatment requirement. The diaphragm type filter press is an improved type of plate and frame filter press, and the main difference is that two elastic membranes are additionally arranged on two sides of a filter plate. The operation of the membrane filter press is divided into two stages. After the feeding is finished, the feeding pump continues to provide pressure so that filtrate is discharged, and the stage is called filter pressing. After the filter pressing is finished, high-pressure medium (which can be compressed air or water) can be injected into the diaphragm plate, and then the whole diaphragm can be bulged to press the filter cake, so that the further dehydration of the filter cake is realized, and the stage is called pressing. The high-pressure membrane filter press is also the filter press with the best dewatering effect up to now. The water content of the filter cake can reach below 60 percent, but one working cycle of the filter cake generally needs 4 hours, and the efficiency is too low.
The main reasons of slow water outlet speed and low efficiency of the diaphragm type filter press are as follows:
firstly, the filtering chamber is single-side water outlet. The filter plate and the filter frame of the diaphragm filter press form a filter chamber, a rubber film on the filter frame applies pressure to sludge under the pressure of a medium in the squeezing process, and squeezed water flows out through filter cloth on the filter plate. The particles in the sludge have small particle size and certain viscosity, and a compact layer can be formed on the surface of the sludge when the sludge is pressed, so that the water in the sludge is difficult to discharge. In the diaphragm filter press, all water is discharged from one side of the filter plate in the pressing process, that is, the water in the sludge close to one side of the rubber membrane also passes through the mud cake and then is discharged from one side of the filter plate, so that the filtrate discharge resistance is large, and the pressing time is long.
And secondly, the side surface of the filter chamber is not provided with a water outlet channel. During the filter pressing process, the squeezed water flows out through the filter cloth on the filter plate at the end part of the filter chamber along the axial direction of the filter chamber, and the filter chamber has no water outlet channel in the radial direction.
Thirdly, the pressure cannot be too high. The pressurizing mode of the diaphragm type filter press is that pressure medium is injected into a diaphragm plate to enable the whole diaphragm to swell and press filter cakes, and the diaphragm is made of rubber, so that the diaphragm can not bear too high pressure, and the pressure to sludge is limited to a certain extent.
And fourthly, static sealing is adopted, so that the capacity of the filter chamber is limited. The diaphragm filter press presses the sludge by the swelling of the rubber membrane, the periphery of the rubber membrane is fixed on the filter frame, namely the so-called static seal, the displacement in the pressing process is generated by elastic deformation, so the movement amplitude is limited, therefore, the thickness of the mud filled in the filter chamber cannot be too thick, and the treatment efficiency is not high.
Disclosure of Invention
After years of research, the inventor discovers that: the water removed from the sludge in the compression process is mainly discharged from the side of the filter cake, namely the movement direction of the water is vertical to the compression direction; while only a small amount of water is discharged from the end face of the cake, i.e. the direction of movement of the water is parallel to the direction of pressurization. The section of the mud cake after squeezing and dewatering is observed, the mud cake has an obvious layered structure, the structure between layers is rough, and more pores are formed compared with the structure in the layer. When the water moves to the end face of the filter cake in a direction parallel to the pressurizing direction, the water needs to pass through each layer which is relatively compact, and the encountered resistance is relatively large; when the filter cake moves to the side of the filter cake in the direction perpendicular to the pressurizing direction, the filter cake can pass through the pore structures between layers, and the encountered resistance is small; the water is more easily drained along the side of the cake perpendicular to the direction of pressurization.
The phenomenon is summarized as an interlayer channel effect, namely the sludge cake can form a multilayer structure in the process of pressure dehydration, and more pores are arranged between layers to provide a channel for discharging moisture.
In order to solve the problems of low dehydration speed and poor dehydration effect of the existing filter press, the invention provides an omnibearing water outlet squeezing device with water outlet holes on the side wall of a filter chamber and water outlet holes on both a pressing plate and a bottom plate based on the principle of interlayer channel effect, and dynamic sealing is arranged between the pressing plate and a filter cylinder of the squeezing device. The pressure plate is pushed by a hydraulic cylinder or other power devices to apply pressure to the sludge in the filter chamber, most of filtrate moves to the side wall of the filter chamber through an interlayer channel of a mud cake along the radial direction of the filter chamber, and then is discharged from a water discharge hole on the side wall through filter cloth; a small part of filtrate moves to the end part of the filter chamber along the axial direction of the filter chamber and then is discharged from a water discharge hole at the end part through the filter cloth. The drain hole on the side wall of the filter chamber opens up a drain channel for the filtrate which moves to the side wall of the filter chamber through the inter-cake-layer channel, so that the drainage mode that the filtrate must move to the end face of the filter chamber through a compact sludge layer along the axis direction of the filter chamber and then is drained is changed, and the flow resistance of the filtrate is greatly reduced; in addition, the press plate and the bottom plate on the end face of the filter chamber are provided with drain holes, and the water outlet surface is more than that of single-side water outlet of the diaphragm type filter press, so that the filter press is also beneficial to improving the drainage efficiency of filtrate. On the other hand, due to the adoption of a dynamic sealing form, the motion amplitude of the pressing plate is not limited, the mud filling thickness of the filter chamber can be greatly improved, and the single treatment capacity is increased. The pressing mode of the pressing device is that a hydraulic cylinder or other power devices push a pressing plate to press the sludge in the filter chamber, so that the pressure borne by the sludge is only dependent on the pressure of a hydraulic system or the power devices, and is improved by several times or even tens of times compared with that of a diaphragm type filter press.
The invention is realized by the following technical scheme:
a dynamic sealing omnibearing water outlet method for sludge dewatering is realized by the following modes:
(1) the side wall of the filtering chamber is provided with a drain hole, but the filter plate at the end part of the filtering chamber is not provided with the drain hole as in the diaphragm filter press. During the process of pressing the sludge, filtrate can be discharged without obstruction when the filtrate reaches the side wall of the filter chamber through the passages among the sludge cakes.
(2) The axial dimension of the filter chamber is increased so that the filter chamber is cylindrical instead of a round cake as in a membrane filter press. The aim is to increase the side wall area of the filter chamber, and more drain holes can be processed on the filter chamber.
(3) The two ends of the filter chamber, namely the pressure plate and the bottom plate, are provided with drain holes, and the drain holes on the side wall of the filter chamber form a structural form of omnibearing water outlet of the filter chamber.
(4) The pressure is directly applied to the sludge in the filter chamber by a hydraulic cylinder or other power devices instead of a diaphragm filter press which applies pressure by a pressure medium pushing a rubber membrane, so that the pressure is greatly improved, and the sludge dewatering effect is also obviously improved.
(5) The pressure plate and the filter cylinder are dynamically sealed, namely a sealing ring is arranged on the pressure plate, and the sealing ring ensures that the sludge is not leaked in the process of applying pressure to the sludge when the pressure plate moves in the filter cylinder; therefore, the movement amplitude of the pressing plate is not limited, the loading amount of the filter chamber can be increased, and the treatment efficiency is improved.
The invention also provides a squeezing device for dynamically sealing all-directional water outlet, which consists of a filter cylinder, a pressing plate and a bottom plate. The squeezing device can be composed of a plurality of groups of filter chambers, pressure plates and bottom plates, and the closed space formed by one filter cylinder, one pressure plate and one bottom plate is called a filter chamber. When squeezing, the hydraulic cylinder or other power devices push the press plate to apply pressure to the sludge in the filter chamber, most of filtrate moves to the side wall of the filter chamber through the interlayer channel of the mud cake along the radial direction of the filter chamber, and then is discharged from the water discharge hole on the side wall through the filter cloth; a small part of filtrate moves to the end part of the filter chamber along the axial direction of the filter chamber and then is discharged from a water discharge hole at the end part through the filter cloth. Along with the discharge of filtrate, the volume of mud constantly reduces, and the clamp plate also removes thereupon, keeps stable pressure to mud.
In the above dynamic sealing all-directional water outlet squeezing device, the filter cylinder is of a cylindrical structure, and a plurality of small holes are distributed on the cylinder wall and used as a filtrate discharge channel. The inner walls of the two ends of the cylinder are conical surfaces for leading in the pressing plate and the bottom plate.
In the above-mentioned dynamically sealed omni-directional water outlet squeezing device, the pressing plate has a circular structure and is composed of a large circular flat plate, a small circular flat plate, a cylinder, a plurality of rib plates and sealing rings; the large circular flat plate is directly contacted with the sludge during pressing, pressure is applied to the sludge, and small holes for discharging filtrate are distributed on the large circular flat plate; the periphery of the small circular flat plate is provided with bolt holes for connecting a hydraulic cylinder or other power devices; the cylinder is positioned between the large circular flat plate and the small circular flat plate and is welded with the large circular flat plate and the small circular flat plate; the rib plates are respectively welded with the large and small circular flat plates and the cylinder and are used for enhancing the overall strength of the pressing plate; the sealing ring is arranged on the stepped surface at the periphery of the large circular flat plate and is used for forming motion sealing between the pressing plate and the filter cylinder and preventing sludge from leaking when being pressed.
In the above-mentioned dynamically sealed omni-directional water outlet squeezing device, the bottom plate has a circular structure and is composed of a large circular flat plate, a small circular flat plate, a circular core plate, a cylinder, a plurality of rib plates and sealing rings; the periphery of the small circular flat plate is provided with bolt holes for connecting the frame; the cylinder is positioned between the large circular flat plate and the small circular flat plate and is welded with the large circular flat plate and the small circular flat plate; the rib plates are respectively welded with the large and small circular flat plates and the cylinder and are used for enhancing the integral strength of the bottom plate; the circular core plate is positioned at the upper part of the large circular flat plate, the periphery of the circular core plate is provided with a step surface for fixing the sealing ring on the circular core plate, and the function of the circular core plate is to form fixed sealing between the bottom plate and the filter cylinder and prevent sludge from leaking when the sludge is pressed; small holes for discharging filtrate are distributed on the circular core plate; the circular core plate is connected with the large circular flat plate by a screw; the circular core plate is directly contacted with the sludge during squeezing, bears the axial pressure during sludge squeezing, and transmits the axial pressure to the large circular flat plate, the cylinder and the small circular flat plate, and finally transmits the integral stress of the bottom plate to the frame.
The invention has the beneficial effects that: the invention creatively provides a filter chamber with side wall water outlet holes based on the principle of 'interlayer channel effect', opens up a discharge channel for filtrate moving to the side wall of the filter chamber through a mud cake interlayer channel, and is provided with water outlet holes on two end faces, thereby changing the drainage mode that the filtrate must move to one end face of the filter chamber through a compact sludge layer along the axis direction of the filter chamber and then is discharged, and forming the structural form of omnibearing water discharge of the filter chamber; the flow resistance of the filtrate is greatly reduced, so that the water outlet speed is doubled; therefore, the time for squeezing is short, and the treatment efficiency is greatly improved; the water content of the filter cake is lower, and the dehydration effect is better. And a dynamic sealing mode is adopted between the pressing plate and the filter cylinder, the movement amplitude of the pressing plate is not limited, the mud filling thickness of the filter chamber can be greatly improved, and the single treatment capacity is increased.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view of the platen;
FIG. 3 is a cross-sectional view of the base plate;
fig. 4 is an enlarged view of a portion of the end of the filter cartridge.
In the figure, 1 is a pressing plate, 2 is a filter cartridge, 3 is a bottom plate, 4 is a small circular plate of the pressing plate 1 or the bottom plate 3, 5 is a cylinder of the pressing plate 1 or the bottom plate 3, 6 is a rib plate of the pressing plate 1 or the bottom plate 3, 7 is a screw for fixing a seal ring 8, 8 is a seal ring, 9 is a large circular plate of the pressing plate 1, 10 is a screw for fixing a core plate 12 on the bottom plate 3, 11 is a large circular plate of the bottom plate 3, 12 is a core plate of the bottom plate 3, and 13 is a circular ring of the bottom plate 3.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The pressing device for dynamically sealing the omnibearing water outlet comprises 1 pressing plate 1, 1 filter cylinder 2 and 1 base plate 3, and is shown in figure 1. The bottom plate 3 is the lowest, the filter cartridge 2 is positioned above the bottom plate 3, and the pressure plate 1 extends into the filter cartridge 2 from above the filter cartridge 2. The bottom plate 3 is fixed on the frame; the filter cartridge 2 is driven by a set of lifting device to move up and down; the pressing plate 1 is driven by a hydraulic cylinder or other power devices to move downwards to press or lift the sludge upwards.
Before the squeezing is started, the filter cartridge 2 is lowered onto the base plate 3, the lower end of the filter cartridge 2 is in contact with the large circular plate 11 on the base plate 3, the core plate 12 and the packing 8 on the base plate 3 enter the bottom of the filter cartridge 2, the packing 8 forms a seal between the filter cartridge 2 and the base plate 3, and the filter cartridge 2 and the base plate 3 are combined into a cylindrical container with a bottom. The sludge is then fed into the filter cartridge 2 from above by means of a feed device. After feeding is finished, the pressing plate 1 moves downwards under the driving of the hydraulic cylinder to enter the filter cylinder 2, and pressure is applied to the sludge for squeezing. The sealing ring 8 on the pressing plate 1 forms dynamic sealing between the filter cylinder 2 and the pressing plate 1, and the sludge is prevented from leaking in the pressing process. The filtrate is discharged through the drain holes on the filter cartridge 2, the drain holes on the large circular plate 9 of the pressure plate 1 and the drain holes on the core plate 12 of the base plate 3. Along with the discharge of filtrate, the mud volume in the filter chamber will reduce constantly, and clamp plate 1 also will move along with it under the drive of pneumatic cylinder, exerts stable pressure to the mud in the filter chamber.
After pressing is finished, the pressing plate 1 is lifted, then the filter cartridge 2 is lifted to separate the filter cartridge 2 from the base plate 3, and a certain space distance is reserved between the filter cartridge 2 and the base plate 3; the filter cake after pressing becomes compact and has a certain hardness, does not fall off from the filter cylinder 2 by the self weight, but is kept in the filter cylinder 2 and rises along with the filter cake; after the cartridge 2 is raised, the press plate 1 is lowered again, pushing the filter cake out of the cartridge 2. By this, one duty cycle is completed.
As shown in fig. 1, the wall of the filter cartridge 2 is uniformly distributed with small holes as a passage for discharging the filtrate. As shown in fig. 1 and 4, the inner sides of the upper and lower ends of the filter cartridge 2 are tapered at an angle of 10 ° to 20 °, and the function of the tapered inner sides is to enable the press plate 1 and the gasket 8 on the bottom plate 3 to smoothly enter the filter cartridge 2.
As shown in fig. 2, the pressing plate 1 is composed of a small circular plate 4, a large circular plate 9, a cylinder 5, a rib plate 6, a sealing ring 8 and a screw 7. Small holes are uniformly distributed on the large circular plate 9 and are used as a passage for discharging filtrate; and the seal ring 8 is fixed to the large circular plate 9 by the screw 7. The edge of the small round plate 4 is provided with a bolt hole for connecting the pressure plate 1 with the hydraulic cylinder. The cylinder 5 is positioned between the large circular plate 9 and the small circular plate 4 and is connected by welding; the periphery of the pressure plate is provided with rib plates 6 which are welded with the large circular plate 9, the small circular plate 4 and the cylinder 5 and are used for enhancing the integral strength of the pressure plate 1.
As shown in fig. 3, the bottom plate 3 is composed of a small circular plate 4, a large circular plate 11, a cylinder 5, a rib plate 6, a seal ring 8, a screw 7, a core plate 12, a screw 10 and a circular ring 13. The core plate 12 is uniformly distributed with small holes as a passage for discharging filtrate; the seal ring 8 is fixed on the core plate 12 by a screw 7; the core 12 is fixed to the large circular plate 11 by screws 10. The edge of the small round plate 4 is provided with a bolt hole for connecting the bottom plate 3 with the frame. The cylinder 5 is positioned between the large circular plate 11 and the small circular plate 4 and is connected by welding; the rib plates 6 are arranged around the base plate, and are welded with the large round plate 11, the small round plate 4 and the cylinder 5 to reinforce the integral strength of the base plate 3. The function of the ring 13 is to support the core 12 and the large circular plate 11, ensuring that the core 12 will not deform during compression.
The present invention will be further described with reference to the following examples.
Example 1
The inner diameter of the filter cylinder is 500mm, the height of the filter cylinder is 300mm, the angle of the conical surface at the inner side of the end part is 15 degrees, the diameter of the water outlet hole is 6mm, the filter cylinder is uniformly distributed on the cylinder wall, and the distance is 25 mm; the outer diameter of a sealing ring on the pressing plate is 504mm, is slightly larger than the inner diameter of the filter cylinder, the diameter of the water outlet hole is 6mm, the sealing ring is uniformly distributed on the pressing plate, and the distance is 25 mm; the outer diameter of a seal ring on a core plate of the bottom plate is 504mm, is slightly larger than the inner diameter of the filter cylinder, the diameter of the water outlet hole is 6mm, the seal ring is uniformly distributed on the pressure plate, and the distance is 25 mm. The pressing is carried out in a mode that a hydraulic cylinder drives a pressing plate, and the pressure of a hydraulic system is 28 MPa; the water content of the sludge before the treatment is 83.1 percent, the sludge is squeezed for 15min, and the water content of the mud cake is measured to be 52.7 percent and is lower than the requirement that the water content of the mud cake after the sludge is dehydrated is not higher than 60 percent. The time for pressing is 1/8 of a diaphragm filter press, and the treatment efficiency is improved by times.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. that are made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for dynamically sealing all-directional water outlet for sludge dewatering is characterized by being realized by the following modes:
(1) increasing the axial size of the filter chamber to make the filter chamber cylindrical, and forming a drain hole on the wall of the filter chamber;
(2) the two ends of the filter chamber, namely the pressure plate and the bottom plate, are provided with drain holes;
(3) the pressurizing mode is that a hydraulic cylinder or other power devices push a pressure plate to directly pressurize the sludge in the filter chamber;
(4) a sealing ring is arranged in the circumferential direction of the pressure plate;
(5) the bottom plate is provided with a core plate, and a sealing ring is arranged on the core plate in the circumferential direction.
2. The method of claim 1, wherein the method comprises the following steps: the drain holes on the pressure plate, the drain holes on the bottom plate and the drain holes on the wall of the filter cartridge form a structural form of omnibearing water outlet of the filter chamber.
3. The method of claim 1, wherein the method comprises the following steps: the sealing ring on the pressure plate enables a dynamic seal to be formed between the pressure plate and the filter cartridge during movement of the pressure plate in the filter cartridge.
4. The method of claim 1, wherein the method comprises the following steps: a gasket on the core forms a seal between the base plate and the cartridge.
5. The utility model provides a squeeze device that all-round play water of dynamic seal for pressure filter, comprises clamp plate, section of thick bamboo, bottom plate, its characterized in that: a sealing ring is arranged in the circumferential direction of the core plate on the bottom plate, and static sealing is formed between the bottom plate and the filter cartridge; a sealing ring is arranged in the circumferential direction of the pressure plate, and dynamic sealing is formed between the pressure plate and the filter cylinder; the pressing plate, the filter cartridge and the bottom plate form a filter chamber; the core plate of the pressure plate, the filter cylinder and the bottom plate is provided with drain holes.
6. The dynamically sealed omni-directional water drainage squeezing device according to claim 5, wherein: there is a platen that can move during the pressing process.
7. The dynamically sealed omni-directional water drainage squeezing device according to claim 5, wherein: there is a base plate that can be combined with or separated from the filter cartridge.
8. The platen according to claim 5, wherein: the device consists of a small circular plate, a large circular plate, a cylinder, a rib plate, a sealing ring and a screw; small holes are uniformly distributed on the large circular plate and are used as a channel for discharging filtrate; the sealing ring is fixed on the large circular plate by a screw; the edge of the small round plate is provided with a bolt hole for connecting the pressure plate with the hydraulic cylinder; the cylinder is positioned between the large circular plate and the small circular plate and is connected by welding; the rib plates are arranged around the cylinder and are welded with the large circular plate, the small circular plate and the cylinder, and the rib plates are used for reinforcing the overall strength of the pressing plate.
9. The backplane according to claim 5, wherein: the device consists of a small circular plate, a large circular plate, a cylinder, a rib plate, a sealing ring, a small screw, a core plate, a large screw and a circular ring; the core plate is fixed on the large circular plate by large screws, and small holes are uniformly distributed on the core plate and are used as channels for discharging filtrate; the sealing ring is fixed on the core plate by a small screw; the edge of the small round plate is provided with a bolt hole for connecting the bottom plate with the frame; the cylinder is positioned between the large circular plate and the small circular plate and is connected by welding; the rib plates are arranged around the cylinder, are welded with the large circular plate, the small circular plate and the cylinder and are used for reinforcing the integral strength of the bottom plate; the circular ring is clamped between the core plate and the large circular plate to play a supporting role and is used for preventing the core plate from deforming in the compression process.
10. The filter cartridge of claim 5, wherein: small holes are uniformly distributed on the cylinder wall and are used as a passage for discharging filtrate; the inner sides of the two ends of the filter cylinder are conical surfaces with the angle of 10-20 degrees, and the filter cylinder is used for guiding a sealing ring on a pressure plate or a sealing ring on a core plate of a base plate into the filter cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811207461.0A CN111056725A (en) | 2018-10-17 | 2018-10-17 | Dynamic sealing omnibearing water outlet method and device for sludge dewatering |
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| CN201811207461.0A CN111056725A (en) | 2018-10-17 | 2018-10-17 | Dynamic sealing omnibearing water outlet method and device for sludge dewatering |
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| CN111056725A true CN111056725A (en) | 2020-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022262146A1 (en) * | 2021-06-16 | 2022-12-22 | 中国石油化工股份有限公司 | Experimental apparatus and method for simulating dynamics of hydrocarbon generation and expulsion in geological process |
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| CN207237401U (en) * | 2017-03-22 | 2018-04-17 | 丁志江 | There is the filter-pressing device of mobile filter plate |
| CN108479142A (en) * | 2018-06-21 | 2018-09-04 | 河南林泉环保科技有限公司 | A kind of sludge dehydration device |
| CN210340655U (en) * | 2018-10-17 | 2020-04-17 | 张晓春 | A squeeze device that is used for all-round play water of dynamic seal of sludge dewatering |
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| CN101587048A (en) * | 2009-06-25 | 2009-11-25 | 同济大学 | Anti-force type large-size sludge solidifying and compressing tester |
| CN205821147U (en) * | 2016-06-06 | 2016-12-21 | 广东工业大学 | A kind of sludge dehydration device |
| CN207237401U (en) * | 2017-03-22 | 2018-04-17 | 丁志江 | There is the filter-pressing device of mobile filter plate |
| CN108479142A (en) * | 2018-06-21 | 2018-09-04 | 河南林泉环保科技有限公司 | A kind of sludge dehydration device |
| CN210340655U (en) * | 2018-10-17 | 2020-04-17 | 张晓春 | A squeeze device that is used for all-round play water of dynamic seal of sludge dewatering |
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| WO2022262146A1 (en) * | 2021-06-16 | 2022-12-22 | 中国石油化工股份有限公司 | Experimental apparatus and method for simulating dynamics of hydrocarbon generation and expulsion in geological process |
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