CN116510378B - Screen mesh structure suitable for high-viscosity oil filtration - Google Patents
Screen mesh structure suitable for high-viscosity oil filtration Download PDFInfo
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- CN116510378B CN116510378B CN202310776657.6A CN202310776657A CN116510378B CN 116510378 B CN116510378 B CN 116510378B CN 202310776657 A CN202310776657 A CN 202310776657A CN 116510378 B CN116510378 B CN 116510378B
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- 238000001914 filtration Methods 0.000 title claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 238000001125 extrusion Methods 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 28
- 239000000463 material Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000013502 data validation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
- B01D29/01—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 flat filtering elements
- B01D29/03—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 flat filtering elements self-supporting
-
- 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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
-
- 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
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
-
- 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
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
-
- 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
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a screen structure suitable for filtering high-viscosity oil, and relates to a screen structure, which comprises a filtering box body, a prismatic cavity structure and a filter residue collecting mechanism; the invention relates to a prism cavity structure, which comprises six groups of metal screen plates and two groups of sealing plates, wherein the six groups of identical screen plates surround to form six groups of sides of a hexagonal prism in a tubular column shape, two ends of the six groups of screen plates are plugged by the two groups of sealing plates, a filter residue collecting mechanism comprises a filter belt and a scraper, one end of the scraper with higher horizontal height is rotationally connected to a mounting frame and is connected with one end of the filter belt with lower horizontal height, and one end of the scraper with lower horizontal height is abutted against the surface of the screen plate for collecting filter residues trapped outside the screen plates.
Description
Technical Field
The invention relates to a screen structure, in particular to a screen structure suitable for filtering high-viscosity oil.
Background
In the existing filtering industry, the screen pipe is widely applied to the filtering industry, but the application of the Johnson screen pipe in the industry of refining high-viscosity oil filtering is less, the Johnson screen pipe type filtering is known to be used for filtering high-viscosity media such as oil filtering and the like, because the high-viscosity media have very large influence on the filtering flow and accuracy of the filtering unit, the filtering screen pipe which usually meets the filtering accuracy requirement of the grinding oil industry has smaller flow under the same pressure condition, and the filtering screen plate cannot bear the pressure under the condition of increasing the pressure, so that the filtering unit cannot be used in the high-viscosity filtering industry, and the prior art mostly adopts the filtering mode of a patent high-viscosity lubricating oil purifying device (with the publication number of CN 202116526U) but has higher cost.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a screen structure suitable for filtering high-viscosity oil, which adopts a novel high-viscosity oil filtering mode, has a simpler structure, can ensure that the filtering is free of consumable materials by utilizing a metal filtering material, and can ensure continuous filtering and deslagging by the novel filtering mode to achieve the effect of continuous and continuous flow in the process.
The invention provides the following technical scheme:
a screen structure suitable for high-viscosity oil filtration comprises a filtration box body, a prismatic cavity structure arranged in the filtration box body, and a filter residue collecting mechanism which is arranged at the top of the filtration box body in an inclined manner;
the prismatic cavity structure comprises six groups of metal screen plates and two groups of sealing plates, six groups of identical screen plates are encircled to form six groups of sides of a hexagonal prism in a tubular column shape, two ends of the six groups of identical screen plates are plugged by the two groups of sealing plates and are used for separating the filter box body into two cavity spaces of the screen plate cavity and the screen plate cavity of the prismatic cavity structure, a filter pump communicated with the screen plate cavity is used for pumping negative pressure in the screen plate cavity of the prismatic cavity structure, clean oil of high-viscosity oil outside the screen plate cavity enters the screen plate cavity after being filtered by the screen plate and is pumped out by the filter pump, and filter residues of the high-viscosity oil outside the screen plate cavity are trapped on the surface of the screen plate under the suction of the negative pressure;
the filter residue collecting mechanism comprises a filter belt and a scraper blade which are arranged on a mounting frame at the top of the filter box body, wherein the filter belt and the scraper blade are obliquely arranged, one end of the scraper blade with higher horizontal height is rotatably connected to the mounting frame and is connected to one end of the filter belt with lower horizontal height, one end of the scraper blade with lower horizontal height is propped against the surface of the screen plate and is used for collecting filter residues trapped outside the screen plate, and the filter residues are pried up and down to the filter belt when the screen plate rotates around the axis direction of the filter plate;
the invention relates to a screen pipe type filtering device, which uses a metal screen plate as a filtering material, when filtering operation is carried out, a filter pump pumps negative pressure into a cavity of the screen plate, clean oil is pumped into the cavity of the screen plate under the negative pressure and then is sucked away through the filter pump, solid particles such as filter residues in high-viscosity oil are trapped on the surface of the screen plate, a scraper on a filter residue collecting mechanism is used for collecting the filter residues trapped on the screen plate onto the scraper, the distance from a point on the edge to a rotating central shaft is different due to the collection characteristic of hexagons of a prismatic cavity structure formed by the screen plate, so that the scraper can pick up and down continuously to a filtering belt while collecting the filter residues, and a six-group metal screen plate is adopted to form a six-prismatic cavity structure, so that the collection and up and down prying of the filter residues are combined to obtain the optimal quantity, namely, the six groups of the same metal screen plates surround the hexagonal cross section, each corner is 120 DEG, the top end of the obliquely arranged scraper is rotationally connected onto the scraper, the bottom end of the scraper is in a smooth transition to the adjacent two corners when the bottom end of the scraper is abutted against the surface of the screen plate, and the filter residues can be smoothly output on the two adjacent corners when the filter plates are in a transition and can not pass through the transition to the 120 DEG.
Preferably, the installation rack is further provided with an extrusion roller, an extrusion channel for extruding filter residues is formed between the extrusion roller and a driving roller at the higher end of the horizontal height of the filter belt, the filter residues are further conveyed between the extrusion roller and the driving roller through the movement of the filter belt, the filter residues after extrusion are discharged, the extruded oil liquid can be returned to the filter box again, the whole process is continued, and the filtration and the deslagging can be uninterrupted.
Preferably, install the driving motor that is used for synchronous drive extrusion running roller and drive roller wheel rotation transmission on the mounting bracket, the conveyer belt transmission of filter belt is connected outside drive roller wheel and driven roller wheel for carry the filter residue by scraper blade top transition, driven roller wheel is rotated by conveyer belt drive, and then drive the rotatory little sprocket of its one end, the both ends of prismatic cavity structure are rotated through the switching shaft body and are connected on installing the tape seat bearing on the filtration box inner wall side bearer, the switching shaft body at one end is installed to big sprocket, and pass through chain drive with little sprocket between, the center through-hole in the switching shaft body of the other end has intercommunication filter pump feed liquor pipe and screen cloth inboard, then the transmission of prismatic cavity structure can be accomplished to single driving motor, filter residue collection mechanism and the filter residue extrusion operation between extrusion running roller wheel and the drive roller wheel, the running cost is lower.
Preferably, the inner side of the screen plate cavity of the prismatic cavity structure is provided with a pressure-resistant structure, and the pressure-resistant structure is used for supporting the inner sides of the six groups of screen plates so as to ensure that the metal screen plates still have better stability in a negative pressure environment and in a rotating state in the filtering process.
Preferably, the pressure-resistant structure comprises a plurality of groups of pressure-resistant supporting rings which are arranged side by side along the axial direction of the prismatic cavity structure, the outer ring of the pressure-resistant supporting rings is used for being in butt joint with six groups of side plate edges which are supported on the inner sides of six groups of screen plates, a plurality of groups of positioning clamping grooves are formed in each group of side plate edge, a positioning clamping plate which is used for being inserted and positioned in the positioning clamping grooves is fixed between two groups of sealing plates, the positioning clamping plate is used for providing axial support for the screen plates, and the pressure-resistant supporting rings are used for providing radial support for the positioning clamping plate and the screen plates, so that the positioning clamping plate and the pressure-resistant supporting rings of the cross structural design can provide higher stability effect for the screen plates while guaranteeing the light-weight structural design.
Preferably, the compression-resistant support ring is further provided with a plurality of groups of support shafts in a penetrating manner, two ends of each support shaft are positioned on the two groups of sealing plates, and the support shafts are further provided with positioning blocks used for limiting two sides of each group of compression-resistant support ring, so that the stability of the compression-resistant support ring in the axial direction is further guaranteed.
Preferably, for facilitating later maintenance, installation and disassembly, each group of compression-resistant support rings is provided with the same through groove, and the positioning blocks limited on the same side of the compression-resistant support rings are positioned on the same axis direction of the support shaft, when the support shaft is required to be installed or disassembled, the through grooves are used for allowing the positioning blocks limited on the same side of the compression-resistant support rings to pass through, that is, when the support shaft is required to be installed, the positioning blocks can be installed at the determined positions of the support shaft first, so that the positioning blocks can be conveniently installed and positioned, then the support shaft is pushed axially, the support shaft is rotated, the positioning blocks are aligned through the through grooves, the positioning blocks can be passed through the through grooves, and after the support shaft completely enters, the support shaft can be rotated, and the positioning blocks can avoid the two sides limited on the compression-resistant support rings through the through grooves
Preferably, the switching shaft body used for penetrating out of the filter box body and being connected with the filter pump is connected in the filter box body through mechanical seal, and one end of the switching shaft body is communicated with a liquid inlet pipe of the filter pump through a rotary joint.
Preferably, the number of the screen plates surrounding the prismatic cavity structure is seven or five, the length of the scraping plate is the same as that of the screen plates, the width of the scraping plate is smaller than that of the screen plates, when the number of the screen plates is five, the pentagonal section is formed, each corner is 108 degrees, when the number of the screen plates is seven, the heptagonal section is formed, and each corner is 128 degrees, so that the production requirement can be met.
The beneficial effects of the invention are as follows:
1. the novel high-viscosity oil filtering mode is adopted, the structure is simpler, the metal filtering material is utilized, the filtering can be ensured to be free of consumable materials, meanwhile, the novel filtering mode can ensure continuous filtering and deslagging, and the continuous and continuous process cutting-off effect is achieved;
2. the metal filter material adopts a pressure-resistant screen plate structure, six groups of the same metal screen plates are surrounded to form a prismatic cavity structure, when filtering is carried out, a filter pump pumps negative pressure into the screen plate cavity, clean oil is pumped into the screen plate cavity under the negative pressure and is sucked away through the filter pump, solid particles such as filter residues in high-viscosity oil are trapped on the surface of the screen plate, a scraper plate on a filter residue collecting mechanism is used for collecting the filter residues trapped on the screen plate on the scraper plate, the distance from a point on the edge to a rotation center shaft is different due to the collection characteristic of hexagons in the cross section of the prismatic cavity structure formed by the screen plate, so that the scraper plate can pry up and down while collecting the filter residues, the collected filter residues are continuously pried onto a filter belt, the filter residues are conveyed between a compression roller shaft and a driving shaft through the movement of the filter belt, the dried filter residues after extrusion are discharged, the extruded oil can return to a filter box body again, the whole process is continuously carried out, and the single driving motor can finish transmission and the filtration and the deslagging;
3. when the screen plate is driven, a group of gear motors can drive the roller shafts of the driving roller wheels to rotate, so that a conveying belt attached to the roller shafts of the driving roller wheels starts to drive, the driven roller shafts start to rotate, and then a small sprocket wheel on the driven shaft is driven to rotate;
4. the pressure-resistant structure is adopted in the screen plate cavity of the prismatic cavity structure, so that the metal screen plate still has better stability in a negative pressure environment and in a rotating state during filtration;
5. the pressure-resistant structure adopts a plurality of groups of pressure-resistant supporting rings which are designed side by side, the outer ring of the pressure-resistant supporting rings is used for being abutted to six groups of side plate edges which are supported on the inner sides of six groups of screen plates, a plurality of groups of positioning clamping grooves are formed in each group of side plate edges, positioning clamping plates which are used for being inserted and positioned in the positioning clamping grooves are fixed between two groups of sealing plates, the positioning clamping plates are used for providing axial support for the screen plates, and the pressure-resistant supporting rings are used for providing radial support for the positioning clamping plates and the screen plates, so that the positioning clamping plates and the pressure-resistant supporting rings which are designed in a cross structure can provide higher stability effect for the screen plates while ensuring the light-weight structural design.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a theoretical plot versus filtration performance of a metal screen plate and plain weave filter cloth;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of the structure of the filter housing of FIG. 1 with the filter housing broken away;
FIG. 4 is a schematic illustration of the structure of the prismatic cavity of FIG. 3 with the prism removed;
FIG. 5 is a schematic side elevational view of the present invention;
FIG. 6 is a top view cross-sectional configuration of an adapter shaft mounting for attachment to one end of a filter pump;
FIG. 7 is a schematic perspective view of a prismatic cavity structure with one side screen plate cut away;
FIG. 8 is a schematic perspective view of a prismatic cavity structure with one end closure plate broken away;
FIG. 9 is a schematic view of a configuration in which three sets of compression-resistant support rings are disposed side-by-side;
the labels in the figure: 1 is a filter box body, 2 is a prismatic cavity structure, 3 is a filter residue collector,
21 is a screen plate, 22 is a sealing plate, 23 is a switching shaft body, 24 is a bearing with a seat, 25 is a pressure-resistant structure, 26 is a mechanical seal,
31 is a filter belt, 32 is a scraper, 33 is a mounting rack, 34 is an extrusion roller, 35 is a driving roller, 36 is a driven roller, 37 is a small sprocket, 38 is a large sprocket, 39 is a chain,
251 is the resistance to compression supporting ring, 252 is the location draw-in groove, 253 is the location cardboard, 254 is the back shaft, 255 is the locating piece, 256 is the through groove.
Detailed Description
Example 1
As shown in fig. 2-3, a screen structure suitable for filtering high viscosity oil, in this embodiment, comprises a filtering box 1, a prismatic cavity structure 2 installed in the filtering box 1, and a filter residue collecting mechanism 3 positioned at the top of the filtering box 1 and arranged in an inclined manner;
the prismatic cavity structure 2 comprises six groups of metal screen plates 21 and two groups of sealing plates 22, six groups of identical screen plates 21 are encircled to form six groups of sides of a hexagonal prism in a tubular column shape, two ends of the six groups of sides are plugged by the two groups of sealing plates 22, the two ends of the six groups of sides are used for separating the filter box 1 into two cavity spaces of the screen plate cavity and the screen plate cavity of the prismatic cavity structure 2, a filter pump communicated with the screen plate cavity is used for pumping negative pressure in the screen plate cavity of the prismatic cavity structure 2, clean oil of high-viscosity oil outside the screen plate cavity enters the screen plate cavity after being filtered by the screen plates 21 and is pumped out by the filter pump, and filter residues of the high-viscosity oil outside the screen plate cavity are trapped on the surface of the screen plate 21 under the suction of the negative pressure;
the filter residue collecting mechanism 3 comprises a filter belt 31 and a scraper blade 32 which are arranged on a mounting frame 33 at the top of the filter box body 1, wherein the filter belt 31 and the scraper blade 32 are obliquely arranged, one end of the scraper blade 32 with higher level is rotatably connected to the mounting frame 33 and is connected to one end of the filter belt 31 with lower level, one end of the lower level is abutted against the surface of the screen plate 21 and used for collecting filter residues trapped outside the screen plate 21, and the collected filter residues are pried to the filter belt 31 by forming up-and-down prying when the screen plate 21 rotates around the axial direction of the screen plate;
the invention relates to a screen pipe type filtering device, which uses a metal screen plate 21 as a filtering material, when filtering operation is carried out, a filtering pump pumps negative pressure into a cavity of the screen plate, clean oil is pumped into the cavity of the screen plate under the negative pressure and is then pumped away by the filtering pump, solid particles such as filter residues in high-viscosity oil are trapped on the surface of the screen plate 21, a scraper 32 on a filter residue collecting mechanism 3 is used for collecting the filter residues trapped on the screen plate 21 on the scraper 32, as the collecting characteristic of a hexagonal prism cavity structure 2 formed by the screen plate 21 determines the difference of distances from points on edges to a rotation center shaft, the scraper 32 also forms up-down prying when collecting the filter residues, the collected filter residues are continuously pried onto the filter belt 31, six groups of metal screen plates 21 are adopted to form a hexagonal prism cavity structure 2, the collection of the filter residues and the swing amplitude of up-down prying are combined to comprehensively obtain the optimal quantity, namely, six groups of identical metal screen plates 21 are encircled to form a hexagonal section, each corner is 120 degrees, the top end of a obliquely arranged scraper plate 32 is rotationally connected onto a mounting frame 33, and when the scraper blade at the bottom end of the scraper plate abuts against the surface of the screen plate 21 under the action of gravity, the smooth transition of two adjacent edges can be ensured when the scraper blade passes through the 120 degrees of corners, and the up-down swing amplitude of the prying can be ensured to timely and smoothly transition the filter residues on the scraper plate 32 to the filter belt 31 for output.
Example 2
As shown in fig. 4-8, in this embodiment, further limiting on the basis of embodiment 1, an extrusion roller 34 is further installed on the installation frame 33, and an extrusion channel for extruding filter residues is formed between the extrusion roller 34 and a driving roller 35 at the end of the filtering belt 31 with higher horizontal height, so that the filter residues are fed between the extrusion roller 34 and the driving roller 35 through the movement of the filtering belt 31, the dried filter residues after extrusion are discharged, the extruded oil can return to the filtering box 1 again, the whole process is continuously performed, and the filtering and deslagging can be uninterrupted.
The installation frame 33 is provided with a driving motor for synchronously driving the extrusion roller 34 and the driving roller 35 to rotate, the conveying belt of the filter belt 31 is in transmission connection with the outside of the driving roller 35 and the driven roller 36, the filter belt is used for conveying filter residues transited from the top end of the scraping plate 32, the driven roller 36 is driven to rotate by the conveying belt, and then a small sprocket 37 at one end of the driven roller is driven to rotate, two ends of the prismatic cavity structure 2 are rotationally connected to a belt seat bearing 24 arranged on the side frame of the inner wall of the filter box 1 through a switching shaft body 23, a large sprocket 38 is arranged outside the switching shaft body 23 at one end and is in transmission with the small sprocket 37 through a chain 39, and a central through hole communicated with a liquid inlet pipe of the filter pump and a filter screen plate cavity is formed in the switching shaft body 23 at the other end, so that the single driving motor can finish the transmission of the prismatic cavity structure 2 and the filter residue collecting mechanism 3 and the filter residue extrusion operation between the extrusion roller 34 and the driving roller 35, and the operation cost of the filter residues is low.
The pressure-resistant structure 25 is arranged in the screen plate cavity of the prismatic cavity structure 2, and the pressure-resistant structure 25 is used for supporting the inner sides of the six groups of screen plates 21 to ensure that the metal screen plates 21 still have better stability in a negative pressure environment and in a rotating state during filtration.
The pressure-resistant structure 25 comprises a plurality of groups of pressure-resistant supporting rings 251 which are arranged side by side along the axial direction of the prismatic cavity structure 2, the outer ring of the pressure-resistant supporting rings 251 is used for being abutted and supported on six groups of side plate edges on the inner side of the six groups of screen plates 21, a plurality of groups of positioning clamping grooves 252 are formed in each group of side plate edge, a positioning clamping plate 253 used for being inserted and positioned in the positioning clamping grooves 252 is fixed between two groups of sealing plates 22, the positioning clamping plate 253 is used for providing axial support for the screen plates 21, and the pressure-resistant supporting rings 251 are used for providing radial support for the positioning clamping plate 253 and the screen plates 21, so that the positioning clamping plate 253 and the pressure-resistant supporting rings 251 which are designed in a cross structure can provide higher stability effect for the screen plates 21 while ensuring the light-weight structural design.
The compression-resistant support rings 251 are further provided with a plurality of groups of support shafts 254 in a penetrating manner, two ends of the support shafts 254 are positioned on the two groups of sealing plates 22, and the support shafts 254 are further provided with positioning blocks 255 used for limiting two sides of each group of compression-resistant support rings 251, so that the stability of the compression-resistant support rings 251 in the axial direction is further ensured.
The switching shaft body 23 which is used for penetrating out of the filter box body 1 and is connected with the filter pump is connected in the filter box body 1 through the mechanical seal 26, and one end of the switching shaft body is communicated with a liquid inlet pipe of the filter pump through a rotary joint.
Example 3
As shown in fig. 9, in this embodiment, the screen structure suitable for filtering high viscosity oil is further defined on the basis of embodiment 1, each group of compression-resistant supporting rings 251 is provided with the same through groove 256, and the positioning blocks 255 limited on the same side of the compression-resistant supporting rings 251 are located on the same axis direction of the supporting shaft 254, when the supporting shaft 254 needs to be installed or removed, the through grooves 256 are used for allowing the positioning blocks 255 limited on the same side of the compression-resistant supporting rings 251 to pass through, that is, when the supporting shaft 254 needs to be installed, the positioning blocks 255 can be installed at the determined positions of the supporting shaft 254 first, so that the installation and positioning can be facilitated, then the supporting shaft 254 is pushed axially, the supporting shaft 254 is rotated, so that the positioning blocks 255 can pass through the through grooves 256, and after the supporting shaft 254 is completely inserted, the supporting shaft 254 can be rotated, so that the positioning blocks 255 can avoid the through grooves 256 to be limited on both sides of the compression-resistant supporting rings 251.
Example 4
In this embodiment, the difference from embodiment 2 is that the number of screen panels 21 surrounding the prism cavity structure 2 is seven or five, the length of the scraping plate 32 is the same as the length of the screen panels 21, the width of the scraping plate 32 is smaller than the width of the screen panels 21, when the number of screen panels 21 is five, the pentagonal cross section is formed, each corner is 108 °, and when the number of screen panels 21 is seven, the heptagonal cross section is formed, each corner is 128 °, and the production requirements can be satisfied.
The working principle of the invention is as follows:
the invention relates to a screen pipe type filtering device, which uses a metal screen plate 21 as a filtering material, when filtering operation is carried out, a filter pump pumps negative pressure into a screen plate cavity, clean oil is pumped into the screen plate cavity under the negative pressure and is then pumped away by the filter pump, solid particles such as filter residues in high-viscosity oil are trapped on the surface of the screen plate 21, a scraper 32 on a filter residue collecting mechanism 3 is used for collecting the filter residues trapped on the screen plate 21 on the scraper 32, as the distance from a point on the edge to a rotation center shaft is different due to the collective characteristic of hexagons in the cross section of a prismatic cavity structure 2 formed by the screen plate 21, the scraper 32 also forms up-and-down prying when collecting the filter residues, the collected filter residues are continuously pryed onto a filter belt 31, the filter residues are further pumped between a compression roller shaft and a driving shaft through the movement of the filter belt 31, the dried filter residues after extrusion can be returned into the filter box 1 again, the whole process is continuously carried out, and a single driving motor, namely a speed reducing motor can complete transmission, and filtering and deslagging can be carried out continuously.
The invention adopts a metal screen plate, which is a design result obtained according to specific experimental comparison, and specific theoretical data and experimental data are as follows:
among which two filter materials, namely a filter cloth and a metallic screen plate,
the formula used first is as follows:
1. darcy's law
-----------------------------------（1）
Pressure drop N/m of fluid through medium 2
Total area of A-filter medium m 2 ；
-average linear velocity (m/s) of the sinker through the filter medium, i.e. specific permeability of the filter medium;
l-filter media thickness (m);
u-fluid viscosity (Pa.s);
volumetric flow (m) 3 /s)；
Wherein,-relationship of specific permeability of a medium to its geometry of structure, using an equation describing its specific permeability in terms of structural characteristics of the medium, see equation 2;
2. kezeni kalman equation (cylinder for only the warp and weft)
------------------------------------（2）
-specific surface area of the filter medium;
-a coronel constant;
-porosity of the filter medium;
2.1 porosityMay be defined as the portion of the volume (also referred to as the partial void or void) through which a fluid may pass:
--------------------------------------（3）
3. davis empirical formula
-----------------------------（4）
3.1 specific surface area of the MediumCan be defined as the surface area per unit volume:
---------------------------------（5）
4. parameter table of filter media:
5. theoretical curves of filtration performance are shown in fig. 1:
6. actual test data validation
7. Preliminary theoretical conclusion:
according to darcy formula (1):and actual experiments lead to the conclusion:
the screen plate is set to be 14 times worse than the woven filter cloth pressure drop under the same certain flow, so that the effect of weaving the filter cloth is achieved, the area of the screen plate is 14 times that of the original screen plate or the flow is increased by using higher pressure difference, and the metal filter screen design structure is considered to bear higher pressure difference filtration, so that the filtration mode is an effective and efficient filtration unit.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a screen cloth structure suitable for high viscosity oil filters, its characterized in that includes filtration box (1), installs prismatic cavity structure (2) in filtration box (1), is located filtration box (1) top and is filter residue collection mechanism (3) that the slope set up, prismatic cavity structure (2) include six groups of metal screen cloth boards (21) and two sets of shrouding (22), six groups of same screen cloth boards (21) are encircled and are tubular form and form six groups of sides of hexagonal prism, and both ends are blocked by two sets of shrouding (22), are used for separating filtration box (1) into two cavity spaces in the screen cloth board intracavity of prismatic cavity structure (2) and outside the screen cloth board intracavity, and the filter pump that communicates with screen cloth board intracavity is used for taking out the negative pressure to the screen cloth board intracavity of prismatic cavity structure (2), and get into the screen cloth board intracavity after the clean fluid of high viscosity oil outside the screen cloth board intracavity is filtered through screen cloth board (21) to take out, and the filter residue of high viscosity oil outside the screen cloth board is held back at screen cloth board (21) under the negative pressure absorption surface under screen cloth board (21);
the filter residue collecting mechanism (3) comprises a filter belt (31) and a scraper blade (32) which are arranged on a top mounting frame (33) of the filter box body (1), wherein the filter belt (31) and the scraper blade (32) are obliquely arranged, one end with higher horizontal height of the scraper blade (32) is rotationally connected to the mounting frame (33), and is supported at one end with lower horizontal height of the filter belt (31), one end with lower horizontal height is supported against the surface of the screen plate (21) for collecting filter residues intercepted outside the screen plate (21), and the collected filter residues are prized up and down to the filter belt (31) when the screen plate (21) rotates around the axis direction of the screen plate.
2. A screen structure suitable for high viscosity oil filtration according to claim 1, wherein the mounting frame (33) is further provided with a squeeze roller (34), and a squeeze channel for squeezing filter residues is formed between the squeeze roller (34) and a drive roller (35) at the end of the filter belt (31) having a higher level.
3. The screen structure suitable for high-viscosity oil filtration according to claim 2, wherein a driving motor for synchronously driving the extrusion roller wheel (34) and the driving roller wheel (35) to rotate is installed on the installation frame (33), the conveying belt of the filtering belt (31) is in transmission connection with the outside of the driving roller wheel (35) and the driven roller wheel (36) and is used for conveying filter residues transited by the top end of the scraping plate (32), the driven roller wheel (36) is driven to rotate by the conveying belt and further drives a small chain wheel (37) at one end of the driven roller wheel to rotate, two ends of the prismatic cavity structure (2) are rotatably connected onto a belt seat bearing (24) installed on the side frame of the inner wall of the filtering box body (1) through a switching shaft body (23), a large chain wheel (38) is installed outside the switching shaft body (23) at one end and is in transmission with the small chain wheel (37), and a central through hole communicated with a liquid inlet pipe of the filtering pump and a cavity of the screen plate is formed in the switching shaft body (23) at the other end.
4. A screen structure suitable for high viscosity oil filtration according to any of claims 1-3, characterized in that the screen plate cavities of the prismatic cavity structure (2) have pressure resistant structures (25) therein, which pressure resistant structures (25) are intended to be supported inside six groups of screen plates (21).
5. The screen structure suitable for high-viscosity oil filtration according to claim 4, wherein the pressure-resistant structure (25) comprises a plurality of groups of pressure-resistant supporting rings (251) which are arranged side by side along the axial direction of the prismatic cavity structure (2), the outer ring of the pressure-resistant supporting rings (251) is used for being abutted and supported on six groups of side plate edges on the inner side of six groups of screen plates (21), a plurality of groups of positioning clamping grooves (252) are formed on each group of side plate edges, a positioning clamping plate (253) used for being inserted and positioned in the positioning clamping grooves (252) is fixed between two groups of sealing plates (22), the positioning clamping plate (253) is used for providing axial support for the screen plates (21), and the pressure-resistant supporting rings (251) are used for providing radial support for the positioning clamping plate (253) and the screen plates (21).
6. The screen structure suitable for high-viscosity oil filtration according to claim 5, wherein a plurality of groups of supporting shafts (254) are further arranged on the compression-resistant supporting rings (251), two ends of the supporting shafts (254) are positioned on two groups of sealing plates (22), and positioning blocks (255) used for limiting two sides of each group of compression-resistant supporting rings (251) are further arranged on the supporting shafts (254).
7. The screen structure suitable for high-viscosity oil filtration according to claim 6, wherein the same through grooves (256) are formed in each group of compression-resistant supporting rings (251), positioning blocks (255) limited on the same side of the compression-resistant supporting rings (251) are located on the same axis direction of the supporting shaft (254), and when the supporting shaft (254) needs to be mounted or dismounted, the through grooves (256) are used for allowing the positioning blocks (255) limited on the same side of the compression-resistant supporting rings (251) to pass through.
8. A screen structure suitable for high viscosity oil filtration according to claim 6, characterized in that the adapter shaft (23) for connecting the filter pump to the filter tank (1) is connected to the filter tank (1) by mechanical seal (26), and one end is connected to the liquid inlet pipe of the filter pump by rotary joint.
9. A screen structure suitable for high viscosity oil filtration according to claim 1, characterized in that the number of screen plates (21) surrounding the prismatic cavity structure (2) is seven or five, and the length of the scraper (32) is the same as the length of the screen plates (21), the width of which is smaller than the width of the screen plates (21), when the number of screen plates (21) is five, the pentagonal cross section is composed, each corner is 108 °, when the number of screen plates (21) is seven, the heptagonal cross section is composed, each corner is 128 °.
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| CN2645792Y (en) * | 2003-10-13 | 2004-10-06 | 刘抗利 | Prism type drum screen |
| CN107308707A (en) * | 2017-06-29 | 2017-11-03 | 中国船舶重工集团公司第七〇九研究所 | Ocean nuclear power platform self-adjusting scraper-type inverse-washing filter |
| CN110214960A (en) * | 2019-07-23 | 2019-09-10 | 贵州省山地农业机械研究所 | Sieve mud device for banana dasheen |
| CN216092616U (en) * | 2021-11-15 | 2022-03-22 | 烟台凯晨机械设备有限公司 | Automatic filtering system of cleaning machine equipment |
| CN116179869A (en) * | 2023-02-01 | 2023-05-30 | 中化化工科学技术研究总院有限公司 | Integrated treatment method for recycling aluminum ash |
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2023
- 2023-06-29 CN CN202310776657.6A patent/CN116510378B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645792Y (en) * | 2003-10-13 | 2004-10-06 | 刘抗利 | Prism type drum screen |
| CN107308707A (en) * | 2017-06-29 | 2017-11-03 | 中国船舶重工集团公司第七〇九研究所 | Ocean nuclear power platform self-adjusting scraper-type inverse-washing filter |
| CN110214960A (en) * | 2019-07-23 | 2019-09-10 | 贵州省山地农业机械研究所 | Sieve mud device for banana dasheen |
| CN216092616U (en) * | 2021-11-15 | 2022-03-22 | 烟台凯晨机械设备有限公司 | Automatic filtering system of cleaning machine equipment |
| CN116179869A (en) * | 2023-02-01 | 2023-05-30 | 中化化工科学技术研究总院有限公司 | Integrated treatment method for recycling aluminum ash |
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