CN114602230A - Air-blowing prying type residual filter cake removing assembly - Google Patents
Air-blowing prying type residual filter cake removing assembly Download PDFInfo
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- CN114602230A CN114602230A CN202210260169.5A CN202210260169A CN114602230A CN 114602230 A CN114602230 A CN 114602230A CN 202210260169 A CN202210260169 A CN 202210260169A CN 114602230 A CN114602230 A CN 114602230A
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- rotating shaft
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- 239000012065 filter cake Substances 0.000 title claims abstract description 79
- 238000007664 blowing Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000007790 scraping Methods 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 19
- 230000009471 action Effects 0.000 abstract description 8
- 238000010408 sweeping Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 13
- 238000000926 separation method Methods 0.000 description 7
- 238000010926 purge Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008241 heterogeneous mixture Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B01D29/62—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
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
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- 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
- B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
- B01D29/6446—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles with a rotary movement with respect to the filtering element
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of residual filter cake treatment, and particularly relates to an air-blowing prying type residual filter cake removing assembly. The invention comprises an air-blowing cutter, which comprises a blade for scraping materials, and is characterized in that: the blade is arc tile-shaped, and the arc opening of the blade points to the advancing direction of the blade; the air-blowing knife also comprises a knife back nozzle, and the air flow spraying direction of the knife back nozzle points to the back surface of the blade, so that the air flow flows to the edge of the blade along the arc-surface-shaped back surface of the blade. The invention can not only utilize the air blowing cutter therein to generate a prying up vortex-shaped airflow force to the residual filter cake, thereby prying up the residual filter cake, but also can complete the sweeping and unloading functions of all the residual filter cake surfaces by matching with the rotary actions of the rotary shaft and the scraper frame; the invention perfectly completes the aim of sweeping and removing the residual filter cake, has high filter cake removal rate and obviously improved filtering efficiency, and correspondingly prolongs the cycle period of the filtering medium.
Description
Technical Field
The invention belongs to the technical field of residual filter cake treatment, and particularly relates to an air-blowing prying type residual filter cake removing assembly.
Background
Filtration is one of the most common and efficient chemical unit operations for separating liquid/solid heterogeneous mixtures, and has forms such as air pressure filtration, vacuum filtration, mechanical extrusion, and the like in industrial production. During filtering, the liquid in the mixture passes through the meshes of the filtering medium, and the solid material in the mixture is intercepted on the surface of the filtering medium such as a filter cloth, a metal filter screen or a filter element, so that the aim of solid-liquid separation is fulfilled. In the filtering operation, the thickness of the solid particle layer, namely the filter cake, is continuously increased along with the filtering process, so that the filtering resistance is continuously increased, and the filtering speed is continuously reduced along with the increase, so that the thickness of the filter cake is one of the key factors influencing the filtering speed. In production, the filter equipment can achieve the purpose of removing filter cakes through various structural types, such as a scraper/scraper structure, a rapping structure, a filter bag shaking structure, a filter bag overturning structure, a flushing structure and the like; the filter cake discharging mode is scraper discharging, namely the scraper scrapes and discharges the filter cake layer by rotating and penetrating. In order to protect the filter medium from being scraped, a gap of about 10mm exists between the scraper and the filter medium, and the residual filter cake in the gap is residual filter cake and cannot be removed by the scraper. According to the above, the residual filter cake can reduce the next filtration rate, and can cause cross use and mixing of materials in each batch, and the residual filter cake has to be removed by manual cleaning in production practice. In the filtering equipment with larger specification and model, the residual filter cake reaches hundreds of kilograms, which not only greatly reduces the production efficiency, but also has larger labor intensity; if the materials are toxic or flammable and explosive, the materials are removed by manpower, and certain potential safety hazards are also provided, which needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air-blowing prying type residual filter cake removing assembly which is compact in structure, convenient and reliable to use and can be applied to the existing filter cake scraping equipment, so that an air-blowing knife in the air-blowing prying type residual filter cake removing assembly can be used for generating a prying up vortex-shaped airflow force on the residual filter cake, the residual filter cake can be pried up, and the sweeping and removing functions of all residual filter cake surfaces can be completed by matching with the rotary actions of a rotary shaft and a scraper frame; the invention perfectly completes the aim of sweeping and removing the residual filter cake, has high filter cake removal rate and obviously improved filtering efficiency, and correspondingly prolongs the cycle period of the filtering medium.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a subassembly is clear away to filter cake is remained to air-blowing sled formula, includes the air-blowing sword, and this air-blowing sword is including being used for the blade of scraping the material, its characterized in that: the blade is arc tile-shaped, and the arc opening of the blade points to the advancing direction of the blade; the air-blowing knife also comprises a knife back nozzle, and the air flow spraying direction of the knife back nozzle points to the back surface of the blade, so that the air flow flows to the edge of the blade along the arc-surface-shaped back surface of the blade.
Preferably, the assembly further comprises a rotating shaft capable of rotating around the axis of the rotating shaft; the top of the rotating shaft is provided with a power source for driving the rotating shaft to rotate, the bottom of the rotating shaft radially extends to form a scraper frame, and the cutter back nozzle is arranged at the scraper frame; the scraper frame and the rotary shaft are both hollow and are communicated with the sealing cavity bodies, so that the cavity of the scraper frame forms a connecting cavity communicated with the inner cavity of the rotary shaft and the spray cavity of the nozzle of the knife back.
Preferably, the appearance of the scraper frame is in a regular triangular platform shape with a thin top and a thick bottom, the bottom surface of the scraper frame is fixed at a rotating shaft, the air blowing cutter is installed at the front side plate of the scraper frame, the cutter back nozzle is installed at the lower side plate of the scraper frame, and the height of the front edge formed by the matching of the front side plate and the lower side plate is lower than the height of the rear edge formed by the matching of the rear side plate and the lower side plate.
Preferably, an included angle alpha between the lower side plate and the horizontal plane is 8-12 degrees; the included angle beta between each edge of the regular triangular frustum-shaped scraper frame and the top surface of the frustum pyramid is 85-89 degrees.
Preferably, the scraper frames are divided into two groups and are uniformly distributed along the circumferential direction of the axis of the rotating shaft; the air-blowing cutters are more than two groups and are sequentially arranged along the length direction of the corresponding scraper frame, and the advancing paths of all the air-blowing cutters are matched with each other to form a circular cleaning surface matched with the shape of the filter cake.
Preferably, the bottom surface of the rotating shaft is provided with more than two groups of bottom surface nozzles communicated with the inner cavity of the rotating shaft, and the bottom surface nozzles are arranged in an axisymmetric way relative to the axis of the rotating shaft; in a top view parallel to the axis of the rotating shaft, the bottom nozzles are arranged in a spiral shape, and the injection direction of each bottom nozzle is directed to the rotating direction of the rotating shaft.
Preferably, the curvature k of the blade is 0.015 to 0.03.
The invention has the beneficial effects that:
1) on the basis of the structure of the original scraper knife, the invention provides the air-blowing knife structure, so that the function of changing the direction of the air flow at the knife back nozzle is realized by utilizing the bonding effect of the air flow jetted by the knife back nozzle along the arc-shaped knife back, and finally, the high-pressure air flow is jetted to the cutting edge area along the arc-shaped knife back to form the air-blowing knife. High-pressure air flow at the edge of the air-blowing cutter can compensate and act on a matching gap between the edge of the blade and the filter plate, so that vortex-shaped airflow force for prying up residual filter cakes at the matching gap is generated, and the aim of prying up the residual filter cakes is fulfilled. Along with the rotary action of the rotary shaft and the scraper frame, the tilted residual filter cake can complete the sweeping and unloading functions of the whole residual filter cake surface under the action of high-pressure air flow and even the rotary removal of the blade by matching with the specific arc opening orientation of the blade.
Therefore, the invention excellently fulfills the aim of sweeping and removing the residual filter cake, has high filter cake removal rate and obviously improved filtering efficiency, and correspondingly prolongs the cycle period of the filtering medium.
2) The air blowing cutter can utilize high-pressure gas to meet an arc-shaped cutter back with a certain curvature to generate a wall attachment effect, so that the function of changing the airflow direction is achieved, finally, air is discharged along the lower surface of the blade edge, a vortex-shaped airflow force for prying up residual filter cakes from the surface to the inner layer is generated, and the residual filter cakes are pried layer by layer. On the basis of the description, the blade can be integrally an arc-shaped blade with a certain curvature, so that the use convenience and the processing convenience of the blade are improved.
3) In practical use, the air blowing blade of the present invention may be independently mounted on a certain side shaft or may be directly mounted on a stirring shaft serving as a rotating shaft. During actual assembly, due to the actual requirement of the knife back nozzle on high-pressure airflow, the air source can reach the knife back nozzle through the inner cavity of the rotating shaft and the cavity of the scraper holder, so that the high-pressure airflow passing function is realized. Meanwhile, due to the special regular triangular platform structure of the scraper frame, on one hand, the edge inclination angle of the scraper frame is 85-89 degrees, so that when the scraper frame rotates, the scraper frame is close to the center of the rotating shaft and contacts with the material firstly, and then is far away from the center of the rotating shaft and contacts with the material, and the effect of pushing the material outwards from the center is achieved. On the other hand, the preceding edge height that the cooperation of the preceding curb plate of scraper frame and curb plate down formed is less than the back edge height that curb plate and curb plate down cooperate formed, and this can form the formula overall arrangement that leans forward naturally when making the blade installation, when having guaranteed the scraping function of blade, also can spray to the blade back with suitable angle after making the installation of the back of a knife nozzle to realize high-pressure draught along the wall flow effect, kill many birds with one stone.
4) When the blades are used, the left and right complementary type is adopted, the high-pressure gas nozzles are arranged on the back of each blade to form a gas blowing surface, and the blowing and the removal of the whole residual filter cake surface are completed through the left and right complementary type, so that the blowing reaction force of the integral structure is reduced.
Drawings
FIG. 1 is an assembled state view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic bottom view of the present invention;
fig. 4 is a schematic view of the working state of the blade.
The actual correspondence between each label and the part name of the invention is as follows:
a-residual Filter cake
10-blade 20-back of the knife nozzle 30-axis of rotation
40-scraper rack 41-front side plate 42-lower side plate 43-rear side plate
50-floor nozzle
Detailed Description
For ease of understanding, the specific structure and operation of the present invention is further described herein with reference to FIGS. 1-4:
in general, in order to protect the filter medium from damage by the scraping mechanism, a gap, typically 10mm, is left between the blade of the scraping mechanism and the filter medium, and the gap is larger for separation devices with high technical parameters. Therefore, the residual filter cake a in the gap is more uniformly accumulated on the surface of the filter medium of the separation device and needs to be removed by other devices. Based on the above, the present invention employs the air blowing structure as shown in fig. 1-2. The invention can be applied in practice or can be applied to a filter press structure as shown in figure 1, and can also be arranged on a scraper centrifuge and other separation equipment through proper modification.
During actual design, if high-pressure gas is simply adopted to directly sweep residual filter cakes, the effect is poor; the main reason is that the residual filter cake A is the bottommost layer of the filter cake, the pressure is large, and the filter cake is in a hardened state. The high pressure gas sweeps the surface of the filter cake directly, but instead compacts to some extent the residual filter cake a, especially the filter cake formed by compressible materials, and therefore it is difficult to obtain the desired effect. In order to obtain a better purging effect, the original hardening state of the residual filter cake A is changed to loosen the filter cake A; secondly, the high-pressure gas cannot directly blow the surface of the filter cake, and the gas is discharged along the lower surface of the cutting edge of the blade 10, so that the filter cake is pried layer by layer, and the residual filter cake A cannot be directly compacted under high pressure; again, the pneumatic purge is required to cover the entire residual filter cake area and to push the purged residual filter cake a to the discharge outlet. Based on this, the invention utilizes the wall attachment effect generated by the high-pressure gas encountering the blade 10 with a certain curvature, thereby changing the airflow direction, further generating a vortex airflow force of prying up from the surface to the inner layer of the residual filter cake A as shown in figure 4, and finally prying up the residual filter cake, thus achieving the purpose of complete material discharge.
More specifically, as shown in fig. 1 to 4, the present invention includes a rotating shaft 30, a scraper holder 40, and a blade 10, a back nozzle 20, and a bottom nozzle 50 on the scraper holder 40. Wherein: as shown in fig. 2 to 3, the doctor holder 40 is divided into a left holder and a right holder, and has an overall in-line structure; in a top view, the left support and the right support are both of regular triangular frustum-shaped structures which are wide near the rotating shaft 30 and narrow far away from the rotating shaft 30. An included angle beta formed by the edge of the left support and the right support and the top surface or the bottom surface of the scraper frame 40 is 85-89 degrees, or an included angle of 1-5 degrees is formed between the edge of the left support and the edge of the right support and a plumb line vertical to the top surface of the scraper frame 40; therefore, when the scraper frame 40 is rotated clockwise, the material is contacted first near the rotating shaft 30 and then contacted far from the rotating shaft 30, resulting in the effect of pushing the material away from the center. And finally, the material reaches a filter cake discharge hole formed in the side surface of the cylinder body of the separation equipment, so that the material discharging effect is realized. The rotation of the scraper holder 40 is achieved by driving the rotary shaft 30 by a power source such as a power motor or the like via a transmission system.
The doctor holder 40 is a hollow triangular prism-shaped structure, and is light in weight and good in rigidity. The description is made with reference to fig. 3-4: the front plate 41, the rear plate 43, and the lower plate 42 constituting the scraper holder 40 are welded to each other in a regular triangular frustum shape, and the scraper holder 40 in the regular triangular frustum shape has a design structure in which the width is wide near the rotation shaft 30 and the width is narrow away from the rotation shaft 30. The bottom end, i.e. the large end, of the scraper holder 40 is welded with the scraper holder 40, and the small end, i.e. the top end, is welded and sealed by a sealing plate to form a closed cavity. In order to reduce friction between the scraper holder 40 and the material during scraping, when the left support is welded with the scraper holder 40, the lower side plate 42 forms an angle alpha with the horizontal plane, generally 8-12 degrees; the right bracket is similarly constructed and will not be described, but is welded to the scraper holder 40 so that the left and right brackets are arranged circumferentially and uniformly along the axis of the rotary shaft.
The blade 10 is formed in an arc shape having a certain curvature, and the arc opening faces the rotation direction of the doctor holder 40, and may be fixed to the front side plate 41 by bolts, welding, or the like. According to the technical parameters of the separation equipment, the blades 10 can be more than 5 and are fixedly arranged on the front side plates 41 of the left bracket and the right bracket in a certain sequence. In order to make each blade 10 have a small force when scraping materials, the width of the blade 10 is limited, each blade 10 is only responsible for scraping a certain size of annular area, and the blades 10 are staggered and mutually supplemented to form a 'complementary' blade layout so as to scrape all materials. There are six complementary blades 10 in fig. 1-3.
During the action of the lifting component from top to bottom, the lifting component generates lifting action, so that most of materials are normally unloaded. Subsequently, to protect the filter medium, a residual filter cake remains which can only be removed by means of the high-pressure gas purge according to the invention. For this purpose, high-pressure nozzles, i.e., a back nozzle 20 and a bottom nozzle 50, are provided on the back of the blade 10 and the bottom of the rotary shaft 30. The axis of the knife back nozzle 20 forms a certain angle with the lower side plate 42 and is a certain distance away from the back of the blade 10, so that the direction of airflow emitted by the knife back nozzle 20 is changed when the airflow flows through an arc surface with a certain curvature on the back of the blade 10, and vortex airflow force of prying up can be formed when the airflow enters the surface of the residual filter cake, so that the residual filter cake is pried up, and the residual filter cake is prevented from being compacted by directly blowing the airflow. In practice, the back of the knife blade nozzle 20 can be connected to the lower side plate 42 by a screw connection, and the distance between the back of the knife blade nozzle 20 and the back of the knife blade can be adjusted by adjusting the screw. Proved by a large number of application practices, when the curvature k of the blade 13 is 0.015-0.03 and the width of the blade 13 is within the range of 60-150 mm, the blade 13 is small in processing difficulty, and the airflow generates an adsorption effect after flowing through the curved surface, the airflow obtains a certain acceleration after deflecting, and the air flow prying-up effect is most obvious.
In order to purge the entire residual cake surface by the back of the knife nozzle 20, a corresponding back of the knife nozzle 20 is provided on the back of each blade 10. The air flow generated by all the knife back nozzles 20 rotates through the rotating shaft 30 to form an annular surface, the stress is limited, and the annular surfaces of the knife back nozzles 20 are mutually supplemented and staggered. In order to prevent the filter cake remaining at the bottom of the scraper frame 40 from forming a blowing dead zone, the bottom nozzles 50 disposed at the bottom of the rotary shaft 30 can compensate the blowing dead zone, so that the direction of the air flow ejected from the bottom nozzles 50 is the same as the direction of the air flow ejected from the corresponding side blade back nozzles 20, i.e., the air flow is directed toward the rotation direction of the rotary shaft 30. Under the combined action of the air flows generated by the knife back nozzle 20 and the bottom nozzle 50, the action range of the air flow covers the whole residual filter cake surface, and the residual filter cake A is blown to a discharge valve arranged on the side surface of the cylinder body of the separation equipment and is finally discharged through a filter cake discharge hole.
During actual design, fan-shaped nozzles are generally selected for each high-pressure nozzle, the fan-shaped surface acts on the residual filter cake surface in the maximum radian, and the material can be selected according to the material property.
After the high-pressure nozzle is installed, the internal air passage of the high-pressure nozzle is communicated with the air distributing passage of the lower side plate 42; the cavity of the scraper holder 40 communicates with the inner cavity of the hollow rotary shaft 30 at the same time as the air distribution passage. The rotating shaft 30 is a hollow shaft, the top end of the rotating shaft is connected with the rotary joint, and the tail end of the rotating shaft is provided with a left transverse channel and a right transverse channel which are respectively communicated with the left bracket and the right bracket. The gas with certain pressure enters the inner cavity of the rotating shaft 30 from the rotary joint, enters the blade back nozzle 20 and the bottom nozzle 50 through the scraper frame 40, and finally achieves the aim of air flow spraying.
Therefore, the method provided by the invention can be used for excellently finishing purging and removing the residual filter cake, the removal rate of the filter cake is up to more than 80%, the filtering efficiency is improved, and the cycle period of the filtering medium is prolonged. The rotary shaft device can adapt to different residual filter cakes by replacing different curvature blades 10, changing the rotating speed and height of the rotary shaft 30, changing the number of nozzles, changing the gas pressure and other operating parameters, and has strong material adaptability and obvious effect.
It will, of course, be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but rather includes the same or similar structures that may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (7)
1. The utility model provides a subassembly is clear away to filter cake is remained to air-blowing sled formula, includes the air-blowing sword, and this air-blowing sword is including being used for blade (10) of scraping the material, its characterized in that: the blade (10) is arc tile-shaped, and the arc opening of the blade (10) points to the advancing direction of the blade (10); the air blowing knife further comprises a knife back nozzle (20), and the air flow spraying direction of the knife back nozzle (20) points to the back surface of the blade (10) so that the air flow flows to the cutting edge of the blade (10) along the back surface of the arc-shaped blade (10).
2. The residual filter cake removal assembly of claim 1, wherein: the assembly further comprises a rotating shaft (30) which can rotate around the axis of the rotating shaft; a power source for driving the rotating shaft (30) to rotate is arranged at the top of the rotating shaft (30), a scraper holder (40) extends radially from the bottom of the rotating shaft (30), and a cutter back nozzle (20) is arranged at the scraper holder (40); the scraper holder (40) and the rotating shaft (30) are both provided with hollow sealed cavities which are communicated with each other, so that the cavity of the scraper holder (40) forms a connecting cavity which is communicated with the inner cavity of the rotating shaft (30) and the spraying cavity of the knife back nozzle (20).
3. The residual filter cake removal assembly of claim 2, wherein: the scraper frame (40) appearance is the thick regular trigone platform form in top thin end, and scraper frame (40) bottom surface is fixed in pivot (30) department, and the air-blowing sword is installed in preceding curb plate (41) department of scraper frame (40), and back of a knife nozzle (20) are installed in lower curb plate (42) department of scraper frame (40), and preceding edge height that preceding curb plate (41) and lower curb plate (42) cooperate and form is less than the back edge height that back curb plate (43) and lower curb plate (42) cooperate and form.
4. The residual filter cake removal assembly of claim 3, wherein: an included angle alpha between the lower side plate (42) and the horizontal plane is 8-12 degrees; the included angle beta between each edge of the regular triangular frustum-shaped scraper frame (40) and the top surface of the frustum pyramid is 85-89 degrees.
5. The residual filter cake removal assembly of claim 2, or 3, or 4, wherein: the scraper frames (40) are divided into two groups and are uniformly distributed along the axial direction of the rotating shaft (30); the air-blowing cutters are more than two groups and are sequentially arranged along the length direction of the corresponding scraper frame (40), and the advancing paths of all the air-blowing cutters are matched with each other to form a circular cleaning surface matched with the shape of the filter cake.
6. A residual filter cake removal assembly according to claim 2, 3 or 4, wherein: the bottom surface of the rotating shaft (30) is provided with two or more groups of bottom surface nozzles (50) communicated with the inner cavity of the rotating shaft (30), and the bottom surface nozzles (50) are arranged in an axisymmetric way relative to the axis of the rotating shaft (30); each of the floor nozzles (50) is arranged in a spiral shape in a plan view parallel to the axis of the rotating shaft (30), and the jetting direction of each of the floor nozzles (50) is directed in the rotating direction of the rotating shaft (30).
7. The residual filter cake removal assembly of claim 1, or 2, or 3, or 4, wherein: the curvature k of the blade (13) is 0.015 to 0.03.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260169.5A CN114602230B (en) | 2022-03-16 | 2022-03-16 | Air-blowing prying type residual filter cake removing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260169.5A CN114602230B (en) | 2022-03-16 | 2022-03-16 | Air-blowing prying type residual filter cake removing assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114602230A true CN114602230A (en) | 2022-06-10 |
| CN114602230B CN114602230B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210260169.5A Active CN114602230B (en) | 2022-03-16 | 2022-03-16 | Air-blowing prying type residual filter cake removing assembly |
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|---|---|---|---|---|
| US5607588A (en) * | 1995-02-28 | 1997-03-04 | Peterson; John G. | Scraper for scraping filter cake from moving filter medium |
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| US6092255A (en) * | 1998-08-11 | 2000-07-25 | Kim; Frank Y. H. | Scraper or squeegee with curved blade surfaces |
| EP1228807A1 (en) * | 2001-02-01 | 2002-08-07 | Krauss-Maffei Process Technology AG | Device and method for scraping a solid cake out of a centrifuge drum |
| CN2748182Y (en) * | 2004-10-29 | 2005-12-28 | 张家港华大离心机制造有限公司 | Filter screen desludging device of centrifuge |
| US20140182972A1 (en) * | 2012-07-31 | 2014-07-03 | United Technologies Corporation | Case with integral lubricant scavenge passage |
| CN104307777A (en) * | 2014-11-18 | 2015-01-28 | 苏州禾盛新型材料股份有限公司 | Air sac type scraper mechanism for PCM production painting |
| CN210207414U (en) * | 2019-05-18 | 2020-03-31 | 浙江丰明实业有限公司 | Closed scraper |
| CN210303454U (en) * | 2019-04-29 | 2020-04-14 | 河北宏望食品有限公司 | Agitating unit is used in production of instant noodle seasoning |
| CN111391167A (en) * | 2020-03-31 | 2020-07-10 | 李亚 | Secondary granulation hot melting treatment process for recycling plastic products |
| CN111677247A (en) * | 2020-06-18 | 2020-09-18 | 合肥皖兴建设工程有限公司 | Waterproof engineering waterproof paint brushing construction method |
| CN111962000A (en) * | 2020-08-19 | 2020-11-20 | 唐山市佳冠实业有限公司 | Air knife body for air flow adjustable hot-dip galvanized plate production and use method |
| CN113509777A (en) * | 2021-07-12 | 2021-10-19 | 核工业烟台同兴实业集团有限公司 | Air-blowing type scraper for moving disc type filter |
-
2022
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| US5607588A (en) * | 1995-02-28 | 1997-03-04 | Peterson; John G. | Scraper for scraping filter cake from moving filter medium |
| JPH09141019A (en) * | 1995-11-17 | 1997-06-03 | Shinko Pantec Co Ltd | Filter dryer and agitating blade for the same |
| US6092255A (en) * | 1998-08-11 | 2000-07-25 | Kim; Frank Y. H. | Scraper or squeegee with curved blade surfaces |
| EP1228807A1 (en) * | 2001-02-01 | 2002-08-07 | Krauss-Maffei Process Technology AG | Device and method for scraping a solid cake out of a centrifuge drum |
| CN2748182Y (en) * | 2004-10-29 | 2005-12-28 | 张家港华大离心机制造有限公司 | Filter screen desludging device of centrifuge |
| US20140182972A1 (en) * | 2012-07-31 | 2014-07-03 | United Technologies Corporation | Case with integral lubricant scavenge passage |
| CN104307777A (en) * | 2014-11-18 | 2015-01-28 | 苏州禾盛新型材料股份有限公司 | Air sac type scraper mechanism for PCM production painting |
| CN210303454U (en) * | 2019-04-29 | 2020-04-14 | 河北宏望食品有限公司 | Agitating unit is used in production of instant noodle seasoning |
| CN210207414U (en) * | 2019-05-18 | 2020-03-31 | 浙江丰明实业有限公司 | Closed scraper |
| CN111391167A (en) * | 2020-03-31 | 2020-07-10 | 李亚 | Secondary granulation hot melting treatment process for recycling plastic products |
| CN111677247A (en) * | 2020-06-18 | 2020-09-18 | 合肥皖兴建设工程有限公司 | Waterproof engineering waterproof paint brushing construction method |
| CN111962000A (en) * | 2020-08-19 | 2020-11-20 | 唐山市佳冠实业有限公司 | Air knife body for air flow adjustable hot-dip galvanized plate production and use method |
| CN113509777A (en) * | 2021-07-12 | 2021-10-19 | 核工业烟台同兴实业集团有限公司 | Air-blowing type scraper for moving disc type filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114602230B (en) | 2023-09-19 |
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Effective date of registration: 20240808 Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Country or region after: China Patentee after: SINOMACH GENERAL MACHINERY SCIENCE & TECHNOLOGY CO.,LTD. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Country or region before: China Patentee before: HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY Co.,Ltd. |