CN116871070A - Centrifuge discharge hopper and bottom discharge centrifuge based on same - Google Patents
Centrifuge discharge hopper and bottom discharge centrifuge based on same Download PDFInfo
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- CN116871070A CN116871070A CN202311139451.9A CN202311139451A CN116871070A CN 116871070 A CN116871070 A CN 116871070A CN 202311139451 A CN202311139451 A CN 202311139451A CN 116871070 A CN116871070 A CN 116871070A
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- connecting pipe
- wall
- discharge
- hopper
- centrifuge
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- 239000007788 liquid Substances 0.000 claims abstract description 70
- 238000007599 discharging Methods 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000004140 cleaning Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- 238000007789 sealing Methods 0.000 claims description 38
- 238000005406 washing Methods 0.000 claims description 36
- 238000007790 scraping Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 10
- 239000011343 solid material Substances 0.000 description 6
- 239000012065 filter cake Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
- B04B11/05—Base discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention relates to a centrifugal machine discharging hopper and a discharging centrifugal machine based on the discharging hopper, wherein a circumferentially uniformly distributed spray header is arranged at the top of an upper connecting pipe of the discharging hopper to flush the inner walls of the upper connecting pipe and an intermediate body, and a negative pressure generator is utilized to form negative pressure at an annular suction joint, so that the flushed fluid materials are sucked into an annular groove body and discharged through the suction joint, the automatic cleaning of the discharging hopper is realized, the materials below the discharging hopper are prevented from being polluted in the cleaning process, the solid-liquid separation process of the centrifugal machine is not influenced in the cleaning process, the cleaning of the discharging hopper can be carried out while the centrifugal machine works, the cleaning convenience of the discharging hopper is greatly improved, and the technical problem that the centrifugal machine cannot work normally in the cleaning process of the discharging hopper and further the using efficiency of the centrifugal machine is influenced is solved.
Description
Technical Field
The invention belongs to the technical field of centrifuges, and particularly relates to a centrifuge discharge hopper and a discharge centrifuge based on the discharge hopper.
Background
The solid-liquid mixture is separated through the rotary drum during the operation of the discharging centrifugal machine, the materials on the inner wall of the rotary drum are scraped by the scraping device after the separation, fall into the discharging hopper from the bottom of the rotary drum and are discharged through the discharging hopper, and the type of centrifugal machine is very convenient to discharge, so that the discharging centrifugal machine is widely applied to the food industry and the pharmaceutical industry.
The lower discharge centrifuge is convenient to use, but the maintenance is troublesome, particularly the cleaning of the discharge hopper, and the discharge hopper is inconvenient to clean from above or from below because the discharge hopper is arranged below the rotary drum and has a large distance from the upper opening of the centrifuge and has a high height. When the discharge hopper is cleaned, the centrifugal machine cannot work normally, so that the use efficiency of the centrifugal machine is also affected.
Disclosure of Invention
The invention aims to solve the technical problems that: the technical problems that the centrifugal machine cannot work normally in the cleaning process of the discharge hopper and the service efficiency of the centrifugal machine is affected are solved.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a centrifuge discharge hopper, including the cone cylindric midbody, the upper end diameter of midbody is greater than the lower extreme diameter, the midbody top is connected with straight cylindric last connecting pipe, the top of going up the connecting pipe is connected with down the flange ring, the internal diameter of flange ring is less than the internal diameter of last connecting pipe down, lower flange ring bottom surface internal edge is connected with the striker circle that sets up with last connecting pipe coaxial, form an annular channel between striker circle and the last connecting pipe, be provided with a sealing ring in the annular channel, this sealing ring inner edge and striker circle outer wall sealing connection, the outer fringe and the inner wall sealing connection of last connecting pipe of sealing ring, sealing ring and lower flange ring bottom surface are just right, sealing ring, last connecting pipe, lower flange ring and striker circle constitute an annular tank jointly, be connected with at least one water inlet connection with the water tank intercommunication on the upper connecting pipe outer wall, circumference equipartition has a plurality of shower heads with the inside intercommunication of water tank on the sealing ring, each water inlet connection is through first valve body and high-pressure water source intercommunication, the lower extreme of midbody is provided with a straight cylindric down and extends the pipe, be provided with the annular slot between midbody and the down and extends the pipe, this midbody forms annular suction seam, the sealing ring is connected with the annular channel lower ring lower edge and the annular channel portion down the lower part is connected with the annular channel, the annular channel portion down the lower side of the ring connector is connected with the annular channel and the lower side of the sealing ring, the lower connector is connected with the annular channel and the lower side of the lower ring connector is connected with the annular channel and the lower side of the lower sealing ring, the lower sealing ring is connected down.
As a preferred scheme, still be connected with a little awl fill that sets up coaxial with the midbody on the outer wall of lower extension pipe, the upper portion cover of little awl fill is established outside midbody lower extreme and is kept annular clearance between little awl fill and the midbody, little awl fill is located the ring channel internally, and the lower extreme that little awl was fought is connected in the below of lower extension pipe upper mouth, and the up end of lower extension pipe becomes the inclined plane of inside and outside low, and the up end of lower extension pipe and the circular arc transition of little awl fill inner wall, and the terminal surface is parallel with the lower terminal surface of lower extension pipe under the midbody.
As a preferable scheme, the inner diameter of the lower end of the intermediate body is consistent with the inner diameter of the lower extension pipe.
As a preferable scheme, the inner diameter of the stop ring is gradually enlarged from top to bottom, so that the inner wall of the stop ring is in an inverted cone shape.
As a preferable scheme, the outer wall of the upper connecting pipe is also connected with at least one air inlet joint communicated with the water tank, and the air inlet joint is communicated with a high-pressure air source through a second valve body.
As a preferred embodiment, the suction connections are connected by means of a conduit to the top cover of a closed negative pressure water storage tank, and the negative pressure generator is also connected by means of a conduit to the top cover of the negative pressure water storage tank.
The invention further solves the technical problems that: the technical problems that the centrifugal machine cannot work normally in the cleaning process of the discharging hopper and further the service efficiency of the centrifugal machine is affected are solved.
In order to solve the technical problems, the invention adopts the following technical scheme: the lower discharge centrifuge based on the centrifuge discharge hopper comprises a machine base, a bearing seat fixedly connected on the base and vertically arranged, a rotating shaft rotationally connected in the bearing seat, a rotary drum connected at the top end of the rotating shaft, a driven belt pulley connected at the bottom end of the rotating shaft, a housing fixedly connected on the base and covering the rotary drum, a feeding pipe and a scraping device connected at the top of the housing and inserted into the rotary drum, a driving motor fixedly connected on the base and used for driving the rotating shaft, a driving belt pulley connected on an output shaft of the driving motor, a driving belt pulley and a driven belt pulley are in transmission connection through a belt, the bearing seat comprises a vertically arranged discharge cylinder, a sleeve is coaxially arranged at the center of the discharge cylinder, the rotating shaft is rotationally connected in the sleeve, a plurality of vertically arranged connecting plates are connected between the discharge cylinder and the sleeve through circumferentially and uniformly distributed, each connecting plate is radially arranged along the discharge cylinder, fan-shaped discharge holes are formed between each connecting plate, the upper ends of the discharge cylinders extend upwards to the upper side of the base and are in clearance with the bottom surface of the rotary drum, a discharge port opposite to the upper side and lower side of the discharge hole is formed on the bottom surface of the rotary drum, a discharge cylinder is connected on the bottom surface of the rotary drum and a discharge cylinder is connected with a drain flange which is in the sealing flange which is in the clearance between the upper and the lower side of the upper flange and the lower flange of the discharge cylinder and the upper flange is connected, the upper flange is arranged on the sealing flange and the upper flange is arranged on the sealing flange of the upper flange and lower flange of the discharge cylinder and the bottom flange is arranged on the sealing flange and the upper end of the upper flange is arranged on the bottom flange, the lower end extends out of the base for discharging liquid in the liquid collecting area, an annular supporting ring is connected to the outer wall of the upper part of the discharging cylinder, and the bearing seat is connected with the base through the supporting ring.
As a preferable scheme, be provided with a belt cover in the last connecting pipe, the edge along the through-hole of this belt cover connects on last connecting pipe inner wall, and the other end extends to passive band pulley upper end, and the U-shaped groove that can supply the pivot to pass is inwards offered from the tip to the one end that the belt cover is located passive band pulley top, and the belt cover is located under a connecting plate, and this connecting plate lower extreme downwardly extending and with belt cover top fixed connection, belt cover cross-section becomes "n" shape.
As a preferable scheme, the negative pressure generator of the centrifugal machine discharging hopper is a liquid suction pump, and each suction joint is communicated with the feeding pipe through the liquid suction pump.
The invention further solves the technical problems that: the self-cleaning method for the centrifugal machine discharging hopper operation room is provided, so that the technical problems that the centrifugal machine cannot work normally in the discharging hopper cleaning process and the service efficiency of the centrifugal machine is affected are solved.
In order to solve the technical problems, the invention adopts the following technical scheme: the self-cleaning method for the centrifuge discharge hopper operation room comprises the following specific steps of applying the centrifuge discharge hopper to a discharging centrifuge, and then:
a. when the centrifugal machine separates materials, the first valve body is opened, a high-pressure water source is filled with water into the water tank through the water inlet joint and sprays washing liquid to the inner wall of the upper connecting pipe through the spray header; simultaneously starting a negative pressure generator, and sucking air by the negative pressure generator to form negative pressure at the annular suction seam; washing liquid flowing downwards along the upper connecting pipe and the inner wall of the middle body washes materials on the upper connecting pipe and the inner wall of the middle body, flows downwards to the annular suction joint, is sucked into the annular groove body and is discharged from the suction joint, and the maintaining time of the process is set according to actual conditions and is less than the total time of finishing the separation of the materials of the centrifugal machine;
b. after the step a is completed, the first valve body is closed, the second valve body is opened, high-pressure gas is injected into the water tank through the air inlet connector by the high-pressure gas source, after the washing liquid in the water tank is discharged, the gas is sprayed from the spray header to the inner wall of the upper connecting pipe, downward flowing gas flow is formed in the whole centrifugal machine discharging hopper, and the gas flow enables residual washing liquid on the upper connecting pipe and the inner wall of the intermediate body to be evaporated rapidly; the total time consumption of the step a and the step b is less than the total time length for completing the separation of the primary materials by the centrifugal machine;
c. and c, after the step b is completed, closing the second valve body, waiting for discharging of the centrifugal machine, and repeating the step a and the step b when the centrifugal machine finishes discharging and enters the next material separation.
The beneficial effects of the invention are as follows: according to the invention, the spray heads which are circumferentially and uniformly distributed are arranged at the top of the upper connecting pipe of the discharge hopper to flush the inner walls of the upper connecting pipe and the intermediate, and meanwhile, the negative pressure generator is utilized to form negative pressure at the annular suction joint, so that the flushed fluid materials are sucked into the annular groove body and discharged through the suction joint, the automatic cleaning of the discharge hopper is realized, the materials below the discharge hopper are prevented from being polluted in the cleaning process, the solid-liquid separation process of the centrifugal machine is not influenced in the cleaning process, the discharge hopper can be cleaned while the centrifugal machine works, the cleaning convenience of the discharge hopper is greatly improved, and the technical problem that the centrifugal machine cannot work normally in the cleaning process of the discharge hopper, and the use efficiency of the centrifugal machine is influenced is solved.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic view of a specific structure of a discharge hopper of a centrifuge according to the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1;
FIG. 3 is a bottom discharge centrifuge according to the present invention;
FIG. 4 is a top view of the bearing housing;
FIG. 5 is a schematic illustration of a specific construction of a belt cover;
in fig. 1 to 5: 1. intermediate, 2, upper connecting pipe, 3, lower flange ring, 4, striker, 5, annular groove, 6, sealing ring, 7, water tank, 8, water inlet joint, 9, spray header, 10, first valve body, 11, high-pressure water source, 12, lower extension pipe, 13, annular suction slit, 14, annular groove body, 15, suction joint, 16, negative pressure generator, 17, small cone bucket, 18, air inlet joint, 19, second valve body, 20, high-pressure water source, 21, conduit, 22, negative pressure water storage tank, 23, base, 24, bearing pedestal, 25, spindle, 26, drum, 27, driven pulley, 28, housing, 29, feed pipe, 30, scraping device, 31, driving motor, 32, driving pulley, 33, belt, 34, discharge cylinder, 35, sleeve, 36, connecting plate, 37, discharge hole, 38, discharge hole, 39, leak-proof pipe, 40, upper flange, 41, through hole, 42, liquid collecting area, 43, liquid discharge pipe, 44, belt cover, 45, U-shaped groove, 100, centrifuge hopper.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The centrifugal machine discharging hopper shown in fig. 1 and 2 comprises a conical cylindrical middle body 1, wherein the diameter of the upper end of the middle body 1 is larger than that of the lower end, a straight cylindrical upper connecting pipe 2 is connected to the top end of the middle body 1, a lower flange ring 3 is connected to the top end of the upper connecting pipe 2, the inner diameter of the lower flange ring 3 is smaller than that of the upper connecting pipe 2, a stop ring 4 coaxially arranged with the upper connecting pipe 2 is connected to the inner edge of the bottom surface of the lower flange ring 3, an annular groove 5 is formed between the stop ring 4 and the upper connecting pipe 2, a sealing ring 6 is arranged in the annular groove 5, the inner edge of the sealing ring 6 is in sealing connection with the outer wall of the stop ring 4, the outer edge of the sealing ring 6 is in sealing connection with the inner wall of the upper connecting pipe 2, the sealing ring 6 is opposite to the bottom surface of the lower flange ring 3, the sealing ring 6, the upper connecting pipe 2, the lower flange ring 3 and the stop ring 4 jointly form an annular water tank 7, a water inlet joint 8 communicated with the water tank 7 is connected to the outer wall of the upper connecting pipe 2, and the number of the water inlet joints 8 can be increased according to actual needs. Eight spray headers 9 communicated with the inside of the water tank 7 are circumferentially and uniformly distributed on the sealing ring 6, the water inlet joint 8 is communicated with a high-pressure water source 11 through a first valve body 10, the high-pressure water source 11 can be a water tower or a water pump, when the first valve body 10 is opened, the high-pressure water source 11 injects washing liquid into the water tank 7 and sprays the washing liquid on the inner wall of the upper connecting pipe 2 through the spray headers 9, the washing liquid flows downwards along the inner walls of the upper connecting pipe 2 and the intermediate body 1, materials on the inner walls of the upper connecting pipe 2 and the intermediate body 1 are washed downwards, and the inner wall of the discharge hopper is cleaned. The lower end of the intermediate body 1 is provided with a straight cylindrical lower extension pipe 12, a gap is formed between the intermediate body 1 and the lower extension pipe 12 to form an annular suction slit 13, an annular groove body 14 is connected to the outer wall of the lower part of the intermediate body 1, the annular groove body 14 is opened towards one side of the intermediate body 1, the upper edge of the opening part of the annular groove body 14 is in sealing connection with the outer wall of the lower part of the intermediate body 1, the lower edge of the opening part of the annular groove body 14 is in sealing connection with the outer wall of the lower extension pipe 12, the lower edge of the opening part of the annular groove body 14 is lower than the upper end of the lower extension pipe 12, a plurality of suction joints 15 communicated with the inner part of the annular groove body 14 are connected to the bottom of the annular groove body 14, and each suction joint 15 is communicated with a negative pressure generator 16. When the negative pressure generator 16 is started, negative pressure is formed inside the annular groove body 14, so that the annular suction slit 13 is formed, a mixture of the material washed down by the washing liquid and the washing liquid is sucked into the yellow groove body 14 and discharged through the suction connector 15, after long-time cleaning, the material on the inner walls of the intermediate body 1 and the upper connecting pipe 2 can be cleaned, the content of solid materials in the washing liquid entering the annular groove body 14 at the later stage is very low, and the annular groove body 14, the suction connector 15 and the guide pipe 21 can be washed, so that a self-cleaning function is realized.
As a further optimization of the above technical scheme, in this embodiment, a small cone bucket 17 coaxially arranged with the intermediate body 1 is further connected to the outer wall of the lower extension pipe 12, the upper portion of the small cone bucket 17 is sleeved outside the lower end of the intermediate body 1, an annular gap is reserved between the small cone bucket 17 and the intermediate body 1, the small cone bucket 17 is located in the annular groove 14, the lower end of the small cone bucket 17 is connected below the upper opening of the lower extension pipe 12, the upper end face of the lower extension pipe 12 is an inclined face with the inner height and the outer height, the upper end face of the lower extension pipe 12 is in circular arc transition with the inner wall of the small cone bucket 17, and the lower end face of the intermediate body 1 is parallel to the lower end face of the lower extension pipe 12.
The small cone hopper 17 can guide the mixture of the washing liquid and the materials sucked into the annular groove body 14 to upwards impact the inner wall of the annular groove body 14, the process can improve the mixing uniformity of the washing liquid and the materials, reduce the deposition of the solid materials in the annular groove body 14, and improve the stability and sustainability of the cleaning process.
As shown in fig. 1, the inner diameter of the lower end of the intermediate body 1 is preferably identical to the inner diameter of the lower extension pipe 12 in this embodiment, so that the material is not easy to fall into the annular suction slit 13 during normal discharging, and the negative pressure at the annular suction slit 13 can effectively suck the washing liquid and the material flowing down above into the annular groove body 14 completely when the negative pressure generator 16 is operated.
In order to avoid the inner wall of the stop ring 4 from being polluted by solid materials, the inner diameter of the stop ring 4 is further preferably gradually enlarged from top to bottom, so that the inner wall of the stop ring 4 is in an inverted cone shape.
As a further optimization of the above technical solution, the outer wall of the upper connecting pipe 2 in this embodiment is further connected with an air inlet connector 18 that is communicated with the water tank 7, and the air inlet connector 18 is communicated with a high-pressure air source 20 through a second valve body 19. The number of the air inlet connectors 18 can be increased according to practical situations, when the second valve body 19 is opened, the high-pressure air source 20 injects high-pressure air into the water tank 7 and sprays the high-pressure air into the inner wall of the upper connecting pipe 2 through the spray headers 9, the air flows sprayed by the spray headers 9 form downward flowing air flows in the whole discharging hopper, and the air flows improve the evaporation speed of washing liquid on the inner walls of the upper connecting pipe 2 and the intermediate body 1, so that the upper connecting pipe 2 and the inner wall of the intermediate body 1 are recovered to be dry. The second valve body 19 and the first valve body 10 are not simultaneously opened, and after the intermediate body 1 and the upper connecting pipe 2 are cleaned by using the washing liquid, the second valve body 19 is opened to blow-dry the inner walls of the intermediate body 1 and the upper connecting pipe 2 after the first valve body 10 is closed.
In the present embodiment, as shown in fig. 1, each suction connection 15 is connected to the top cover of a closed negative pressure water storage tank 22 through a conduit 21, and the negative pressure generator 16 is also connected to the top cover of the negative pressure water storage tank 22 through the conduit 21. The mixture of the washing liquid and the material is sucked into the negative pressure water storage tank 22 and stored and deposited therein, and the material stored in the negative pressure water storage tank 22 can be filtered by the centrifugal machine again, so that the solid material in the material can be filtered out.
The working procedure of this embodiment is: when the inner wall of the discharge hopper of the centrifugal machine needs to be cleaned, as long as the first valve 10 is opened, the washing liquid (the common washing liquid is water, and other solvents can be adopted for cleaning according to practical conditions, such as the solvent of the separated solid-liquid mixture) of the high-pressure water source 11 can be injected into the water tank 7 and sprayed onto the inner wall of the upper connecting pipe 2 through the spray header 9, the washing liquid flows downwards along the inner wall of the upper connecting pipe 2 to wash the solid materials on the inner walls of the upper connecting pipe 2 and the intermediate body 1 upwards, and most of the materials adhered to the upper connecting pipe 2 and the intermediate body 1 are powder or finely crushed particles due to low water content of the filter cake after the centrifugal machine is filtered, so that the materials can be washed away easily under the washing liquid. At the same time of starting cleaning, the negative pressure generator 16 is started, the negative pressure generator 16 can be a water pump or an air pump, the negative pressure generator 16 pumps the air in the annular groove body 14 through the suction joint 15, so that the interior of the annular groove body 14 is in a negative pressure state, therefore, the annular suction joint 13 communicated with the interior of the annular groove body 14 is also in a negative pressure state, and the mixed fluid of the washing liquid and the materials flowing downwards along the upper connecting pipe 2 and the inner wall of the intermediate body 1 flows to the annular suction joint 13, is sucked into the annular groove body 14 and is discharged from the suction joint 15.
In this embodiment, the suction connector 15 is connected to the negative pressure water storage tank 22 through the conduit 21, so that the mixed fluid of the washing liquid and the material is sucked into the negative pressure water storage tank 22 to be stored and deposited, and waiting for recycling.
In practical application, the suction connector 15 can be directly connected to the feed pipe of the centrifuge through the guide pipe 21, the cleaned mixture directly returns to the drum for solid-liquid separation, and the negative pressure generator 16 is a pump body, so that the material recovery efficiency can be further improved.
When the washing liquid entering the negative pressure water storage tank 22 is clear for a period of time, the materials on the upper connecting pipe 2 and the inner wall of the intermediate body 1 are basically cleaned, at the moment, the first valve body 10 can be closed, the second valve body 19 is opened, then the high-pressure air source 20 injects high-pressure air into the water tank 7, the high-pressure air firstly discharges the washing liquid in the water tank 7, then the air is sprayed to the inner wall of the upper connecting pipe 2 through the spray heads 9, and because the spray heads 9 spray the air at the same time, downward flowing air flow is formed in the whole discharge hopper, and the evaporation speed of the washing liquid on the inner wall of the discharge hopper is accelerated by the air flow, so that the inner wall of the discharge hopper is recovered to a dry state.
The whole cleaning process does not need manual field operation, so that the cleaning process can be performed in the centrifugal operation process of the centrifugal machine, a user can set the cleaning period according to the viscosity of the solid material, for example, after the centrifugal machine performs three solid-liquid separation and discharging, the centrifugal machine performs primary cleaning, and when the centrifugal machine performs the next solid-liquid separation, the cleaning duration does not exceed the primary solid-liquid separation duration of the centrifugal machine, so that the next discharging of the centrifugal machine is not influenced. The centrifugal machine discharging hopper with tertiary and tertiary structure is convenient to clean, and the centrifugal machine is not required to be stopped in the cleaning process, so that the technical problem that the use efficiency of the centrifugal machine is reduced due to the cleaning of the centrifugal machine discharging hopper is solved.
Example 2
The lower discharging centrifugal machine as shown in figures 3-5 comprises a machine base 23, a bearing seat 24 fixedly connected to the base 23 and vertically arranged, a rotating shaft 25 rotatably connected in the bearing seat 24, a rotary drum 26 connected to the top end of the rotating shaft 25, a driven belt pulley 27 connected to the bottom end of the rotary shaft 25, a housing 28 fixedly connected to the base 23 and covering the rotary drum 26, a feed pipe 29 and a scraping device 30 connected to the top of the housing 28 and inserted into the rotary drum 26, and a driving motor 31 fixedly connected to the base 23 and used for driving the rotary shaft 25 to rotate, wherein the output shaft of the driving motor 31 is connected with a driving belt pulley 32, the driving belt pulley 32 is in transmission connection with the driven belt pulley 27 through a belt 33, the bearing seat 24 comprises a vertically arranged discharge cylinder 34, a sleeve 35 is coaxially arranged in the center of the discharge cylinder 34, the rotating shaft 25 is rotatably connected in the sleeve 35, the discharge cylinder 34 is connected with the sleeve 35 through a plurality of vertically arranged connecting plates 36 uniformly distributed in the circumferential direction, each connecting plate 36 is arranged along the radial direction of the discharge barrel 34, a fan-shaped discharge hole 37 is formed between each connecting plate 36, the upper end of the discharge barrel 34 extends upwards to the upper side of the base 23 and is in clearance with the bottom surface of the rotary drum 26, a discharge hole 38 which is opposite to the discharge hole 37 in the upper-lower direction is formed on the bottom surface of the rotary drum 26, a leakage-proof pipe 39 which is inserted downwards into the discharge barrel 34 is also connected to the bottom surface of the rotary drum 26, a clearance is reserved between the outer wall of the leakage-proof pipe 39 and the inner wall of the discharge barrel 34, each connecting plate 36 is positioned below the leakage-proof pipe 39, an upper flange 40 is arranged at the lower end of the discharge barrel 34, the centrifuge discharge hopper 100 described in the embodiment 1 is connected to the upper flange 40, the lower flange ring 3 of the centrifuge discharge hopper 100 is in sealing butt joint with the upper flange 40, a through hole 41 for the belt 33 to pass through is formed on the upper connecting pipe 2 of the centrifuge discharge hopper 100, the belt 33 passes through the through hole 41 to connect the driving pulley 32 and the driven pulley 27, a liquid collecting area 42 is formed between the housing 28 and the discharge cylinder 34, a liquid discharging pipe 43 is connected to the base 23, the upper end of the liquid discharging pipe 43 is communicated with the liquid collecting area 42, the lower end of the liquid discharging pipe extends out of the base 23 to discharge liquid in the liquid collecting area 42, an annular supporting ring 46 is connected to the outer wall of the upper part of the discharge cylinder 34, and the bearing seat 24 is connected with the base 23 through the supporting ring 46.
In this embodiment, a belt cover 44 is disposed in the upper connecting tube 2, one end of the belt cover 44 is connected to the inner wall of the upper connecting tube 2 along the edge of the through hole 41, the other end extends to the upper end of the driven pulley 27, a U-shaped groove 45 through which the rotating shaft 25 can pass is formed inward from the end of the belt cover 44 above the driven pulley 27, the belt cover 44 is located under a connecting plate 36, the lower end of the connecting plate 36 extends downward and is fixedly connected to the top end of the belt cover 44, and the cross section of the belt cover 44 is n-shaped.
In this embodiment, the negative pressure generator 16 of the centrifuge discharge hopper 100 is a liquid suction pump, and each suction joint 15 is communicated with the feed pipe 29 through the liquid suction pump, so that the mixture of the washing liquid and the material washed by the centrifuge discharge hopper 100 is directly pumped into the drum 26 for solid-liquid separation, and in this case, the washing liquid is the raw solvent collected from the liquid discharge pipe 43 after the solid-liquid separation.
The working procedure of this embodiment is: firstly, the centrifuge is started, the driving motor 31 drives the rotary drum 26 to rotate at a high speed to centrifugally separate the solid-liquid mixture, the material is uniformly distributed on the inner wall of the rotary drum 26 through the feeding pipe 29, a certain amount of solid-liquid mixture is filled into the rotary drum 26, and then the feeding is stopped until the centrifugal separation is finished. After centrifugal separation is finished, the rotation speed of the driving motor 31 is reduced, the scraping device 30 scrapes the filter cake on the inner wall of the rotary drum 26, the broken filter cake falls to the bottom of the rotary drum 26 and is discharged downwards through the discharge hole 38, the material falls into the centrifugal discharge hopper 100 through the discharge hole 37 on the bearing seat 24 and finally is discharged through the opening at the lower end of the centrifugal discharge hopper 100, when the material passes through the centrifugal discharge hopper 100, part of the material remains on the inner wall of the centrifugal discharge hopper 100, if the material is not treated in time, the material is dried on the inner wall of the centrifugal discharge hopper 100, the cleaning is difficult, the smoothness of the inner wall of the centrifugal discharge hopper 100 is reduced, and more material is adhered on the inner wall of the centrifugal discharge hopper 100. Therefore, after one or more times of discharging, the worker may clean the inner wall of the centrifuge discharge hopper 100, and the specific cleaning process is referred to the working process of the centrifuge discharge hopper described in embodiment 1, which is not described herein.
When the centrifuge discharge hopper 100 is cleaned, the centrifuge performs the next centrifugation operation, and in this embodiment, the mixture of the washing liquid and the material cleaned by the centrifuge discharge hopper 100 is pumped back into the drum 26 through the negative pressure generating device for solid-liquid separation, thereby further improving the material recovery efficiency.
On the basis of the embodiment 2, the self-cleaning method for the centrifuge discharge hopper operation room comprises the following steps: the centrifuge discharge hopper 100 described in the above embodiment is applied to a down-discharge centrifuge, and then operated as follows:
a. when the centrifugal machine separates materials, a first valve body 10 is opened, a high-pressure water source 11 is used for injecting water into a water tank 7 through a water inlet joint 8 and spraying washing liquid to the inner wall of an upward connecting pipe 2 through a spray header 9; simultaneously starting a negative pressure generator 16, and sucking air by the negative pressure generator 16 to form negative pressure at the annular suction slit 13; the washing liquid flowing downwards along the inner walls of the upper connecting pipe 2 and the intermediate body 1 washes the materials on the inner walls of the upper connecting pipe 2 and the intermediate body 1, flows downwards to the annular suction slit 13, is sucked into the annular groove body 14 and is discharged from the suction joint 15, and the maintaining time of the process is set according to actual conditions and is less than the total time of finishing the separation of the materials of the centrifugal machine;
b. after the step a is completed, the first valve body 10 is closed, the second valve body 19 is opened, the high-pressure gas is injected into the water tank 7 through the air inlet joint 18 by the high-pressure gas source 20, after the washing liquid in the water tank 7 is discharged, the gas is sprayed from the spray header 9 to the inner wall of the upper connecting pipe 2, downward flowing gas flow is formed in the whole centrifugal machine discharging hopper, and the gas flow enables residual washing liquid on the upper connecting pipe 2 and the inner wall of the intermediate body 1 to be evaporated rapidly; the total time consumption of the step a and the step b is less than the total time length for completing the separation of the primary materials by the centrifugal machine;
c. after the step b is completed, the second valve body 19 is closed, the unloading of the centrifugal machine is waited, and when the unloading of the centrifugal machine is completed and the next material separation is carried out, the step a and the step b are repeated.
The above embodiments are merely illustrative of the principles and effects of the present invention, and some of the applied embodiments, and are not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (10)
1. The utility model provides a centrifuge discharge hopper, a serial communication port, including conical cylindric midbody (1), the upper end diameter of midbody (1) is greater than the lower extreme diameter, midbody (1) top is connected with straight cylindric last connecting pipe (2), the top of last connecting pipe (2) is connected with lower flange ring (3), the internal diameter of lower flange ring (3) is less than the internal diameter of last connecting pipe (2), lower flange ring (3) bottom surface inner edge is connected with striker (4) with last connecting pipe (2) coaxial arrangement, form an annular channel (5) between striker (4) and last connecting pipe (2), be provided with a sealing ring (6) in annular channel (5), this sealing ring (6) inner edge and striker (4) outer wall sealing connection, the outer fringe of sealing ring (6) and the inner wall sealing connection of last connecting pipe (2), sealing ring (6) are just right with lower flange ring (3) bottom surface, sealing ring (6), go up connecting pipe (2), lower flange ring (3) and striker (4) constitute a ring water tank (7) jointly, go up connecting pipe (2) and be connected with at least one water tank (7) and water tank (7) are connected with water tank (7) circumference and are connected with each other in a plurality of water tank (8) and water tank (7) are connected with each other, each water inlet joint (8) is communicated with a high-pressure water source (11) through a first valve body (10), a straight cylindrical lower extension pipe (12) is arranged at the lower end of the intermediate body (1), a gap is formed between the intermediate body (1) and the lower extension pipe (12) to form an annular suction slot (13), an annular groove body (14) is connected to the outer wall of the lower part of the intermediate body (1), one side of the annular groove body (14) faces the intermediate body (1) and is opened, the upper edge of the opening of the annular groove body (14) is in sealing connection with the outer wall of the lower part of the intermediate body (1), the lower edge of the opening of the annular groove body (14) is in sealing connection with the outer wall of the lower extension pipe (12), the lower edge of the opening of the annular groove body (14) is lower than the upper end of the lower extension pipe (12), a plurality of suction joints (15) communicated with the inner parts of the annular groove body (14) are connected to the bottom of the annular groove body (14), and each suction joint (15) is communicated with a negative pressure generator (16).
2. The centrifugal machine discharging hopper according to claim 1, wherein the outer wall of the lower extension pipe (12) is further connected with a small cone hopper (17) coaxially arranged with the intermediate body (1), the upper part of the small cone hopper (17) is sleeved outside the lower end of the intermediate body (1), an annular gap is reserved between the small cone hopper (17) and the intermediate body (1), the small cone hopper (17) is positioned in the annular groove body (14), the lower end of the small cone hopper (17) is connected below the upper opening of the lower extension pipe (12), the upper end face of the lower extension pipe (12) is an inclined face with the inner height and the outer height, the upper end face of the lower extension pipe (12) is in circular arc transition with the inner wall of the small cone hopper (17), and the lower end face of the intermediate body (1) is parallel to the lower end face of the lower extension pipe (12).
3. A centrifuge discharge hopper according to claim 2 wherein the intermediate body (1) has a lower end having an inner diameter corresponding to the inner diameter of the down-tube (12).
4. The discharge hopper of the centrifugal machine according to claim 1, wherein the inner diameter of the stop ring (4) is gradually enlarged from top to bottom so that the inner wall of the stop ring (4) is reversely tapered.
5. The centrifugal machine discharging hopper according to claim 1, wherein the outer wall of the upper connecting pipe (2) is also connected with at least one air inlet joint (18) communicated with the water tank (7), and the air inlet joint (18) is communicated with a high-pressure air source (20) through a second valve body (19).
6. A centrifuge discharge hopper according to claim 1, characterized in that each suction connection (15) is connected to the top cover of a closed negative pressure storage tank (22) by means of a conduit (21), and that the negative pressure generator (16) is also connected to the top cover of the negative pressure storage tank (22) by means of a conduit (21).
7. The lower discharging centrifuge based on the centrifuge discharging hopper according to any one of claims 1 to 6, comprising a machine base (23), a bearing seat (24) fixedly connected on the base (23) and vertically arranged, a rotating shaft (25) rotatably connected in the bearing seat (24), a rotary drum (26) connected at the top end of the rotating shaft (25), a driven belt pulley (27) connected at the bottom end of the rotating shaft (25), a housing (28) fixedly connected on the base (23) and covering the rotary drum (26), a feeding pipe (29) and a scraping device (30) connected at the top of the housing (28) and inserted into the rotary drum (26), a driving motor (31) fixedly connected on the base (23) and used for driving the rotating shaft (25), a driving belt pulley (32) is connected on an output shaft of the driving motor (31), the driving belt pulley (32) and the driven belt pulley (27) are in transmission connection through a belt (33), the bearing seat (24) comprises a discharging barrel (34) vertically arranged, a sleeve (35) is coaxially arranged at the center of the discharging barrel (34), the rotating shaft (25) is rotatably connected in the sleeve (35), a plurality of discharging barrels (36) are uniformly distributed along the radial direction between the discharging barrel (36) and the connecting plates (36) are uniformly distributed along the radial direction, a fan-shaped discharge hole (37) is formed between each connecting plate (36), the upper end of the discharge cylinder (34) extends upwards to the upper part of the base (23) and a gap is reserved between the upper end of the discharge cylinder and the bottom surface of the rotary drum (26), a discharge hole (38) which is opposite to the discharge hole (37) in the upper-lower direction is formed on the bottom surface of the rotary drum (26), a leakage-proof pipe (39) which is downwards inserted into the discharge cylinder (34) is also connected to the bottom surface of the rotary drum (26), a gap is reserved between the outer wall of the leakage-proof pipe (39) and the inner wall of the discharge cylinder (34), each connecting plate (36) is positioned below the leakage-proof pipe (39), an upper flange (40) is arranged at the lower end of the discharge cylinder (34), any one of claims 1-6 is connected to the upper flange (40), a lower flange ring (3) of the centrifugal discharge hopper (100) is in sealing butt joint with the upper flange (40), a through hole (41) for a belt (33) to pass through the through hole (41) is formed on the upper connecting pipe (2) of the centrifugal discharge hopper (100), the belt (33) passes through the through hole (41) and is connected with a driven pulley (27) and a liquid collecting area (42) to form a liquid collecting area (43) between the driving pulley (28) and the liquid collecting area (42) and the upper end of the discharge cylinder (42), the lower end of the material discharging barrel (34) extends out of the base (23) for discharging liquid in the liquid collecting area (42), an annular supporting ring (46) is connected to the outer wall of the upper part of the material discharging barrel, and the bearing seat (24) is connected with the base (23) through the supporting ring (46).
8. The downdischarge centrifuge as claimed in claim 7, wherein a belt cover (44) is provided in the upper connecting pipe (2), one end of the belt cover (44) is connected to the inner wall of the upper connecting pipe (2) along the edge of the through hole (41), the other end extends to the upper end of the driven pulley (27), a U-shaped groove (45) through which the rotating shaft (25) can pass is provided inward from the end of one end of the belt cover (44) above the driven pulley (27), the belt cover (44) is located under a connecting plate (36), the lower end of the connecting plate (36) extends downward and is fixedly connected with the top end of the belt cover (44), and the section of the belt cover (44) is in an n shape.
9. The downdischarge centrifuge as claimed in claim 7, characterized in that the negative pressure generator (16) of the centrifuge discharge hopper (100) is a suction pump, through which the suction connections (15) communicate with the feed pipe (29).
10. A method for cleaning a centrifuge discharge hopper during operation, which is characterized in that the centrifuge discharge hopper as claimed in claim 5 is applied to a lower discharge centrifuge and then operated according to the following specific steps:
a. when the centrifugal machine separates materials, a first valve body (10) is opened, a high-pressure water source (11) is used for injecting water into a water tank (7) through a water inlet joint (8) and spraying washing liquid to the inner wall of an upward connecting pipe (2) through a spray header (9); simultaneously starting a negative pressure generator (16), and sucking air by the negative pressure generator (16) to form negative pressure at the annular suction slit (13); washing liquid flowing downwards along the inner walls of the upper connecting pipe (2) and the intermediate body (1) washes materials on the inner walls of the upper connecting pipe (2) and the intermediate body (1) and flows downwards to the annular suction slit (13) to be sucked into the annular groove body (14) and discharged from the suction joint (15), and the maintaining time of the process is set according to actual conditions and is less than the total time of finishing the separation of the materials by the centrifugal machine;
b. after the step a is completed, the first valve body (10) is closed, the second valve body (19) is opened, a high-pressure gas source (20) injects high-pressure gas into the water tank (7) through the gas inlet connector (18), after the washing liquid in the water tank (7) is discharged, the gas is sprayed from the spray header (9) to the inner wall of the upper connecting pipe (2), downward flowing gas flow is formed in the whole centrifugal machine discharging hopper, and the gas flow enables residual washing liquid on the upper connecting pipe (2) and the inner wall of the intermediate body (1) to be evaporated rapidly; the total time consumption of the step a and the step b is less than the total time length for completing the separation of the primary materials by the centrifugal machine;
c. and c, after the step b is completed, closing the second valve body (19), waiting for discharging of the centrifugal machine, and repeating the step a and the step b when the centrifugal machine finishes discharging and enters the next material separation.
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| CN202311139451.9A CN116871070B (en) | 2023-09-06 | 2023-09-06 | Centrifuge discharge hopper and bottom discharge centrifuge based on same |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202880921U (en) * | 2012-08-03 | 2013-04-17 | 云南驰宏锌锗股份有限公司 | Germanium tetrachloride hydrolysate separating device |
| CN103153475A (en) * | 2009-07-29 | 2013-06-12 | Fl史密斯公司 | Bowl structure for a centrifugal concentrator |
| CN104138809A (en) * | 2014-07-11 | 2014-11-12 | 江苏华大离心机股份有限公司 | Top suspension centrifuge |
| CN205074110U (en) * | 2015-10-12 | 2016-03-09 | 张家港市永达机械制造有限公司 | Dull and stereotyped airtight scraper centrifugal separator |
| CN110000011A (en) * | 2019-04-08 | 2019-07-12 | 宁波锋成纳米科技有限公司 | A kind of separation of solid and liquid uses centrifugation apparatus |
| CN209631423U (en) * | 2019-01-25 | 2019-11-15 | 江西神田生物科技有限公司 | A kind of medical fluid centrifuge |
| CN211707102U (en) * | 2019-12-31 | 2020-10-20 | 广东省矿产应用研究所 | Centrifugal continuous concentrating machine |
| CN214515293U (en) * | 2020-12-30 | 2021-10-29 | 赤峰荣邦矿业有限责任公司 | Centrifugal separator for mineral separation |
| CN216173262U (en) * | 2021-10-15 | 2022-04-05 | 安徽东健化工科技有限公司 | Flat plate type automatic scraper lower discharging centrifugal machine |
| CN217368785U (en) * | 2022-02-09 | 2022-09-06 | 山东精准产品质量检测有限公司 | High-efficient centrifugal separation device of chemical industry |
-
2023
- 2023-09-06 CN CN202311139451.9A patent/CN116871070B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153475A (en) * | 2009-07-29 | 2013-06-12 | Fl史密斯公司 | Bowl structure for a centrifugal concentrator |
| CN202880921U (en) * | 2012-08-03 | 2013-04-17 | 云南驰宏锌锗股份有限公司 | Germanium tetrachloride hydrolysate separating device |
| CN104138809A (en) * | 2014-07-11 | 2014-11-12 | 江苏华大离心机股份有限公司 | Top suspension centrifuge |
| CN205074110U (en) * | 2015-10-12 | 2016-03-09 | 张家港市永达机械制造有限公司 | Dull and stereotyped airtight scraper centrifugal separator |
| CN209631423U (en) * | 2019-01-25 | 2019-11-15 | 江西神田生物科技有限公司 | A kind of medical fluid centrifuge |
| CN110000011A (en) * | 2019-04-08 | 2019-07-12 | 宁波锋成纳米科技有限公司 | A kind of separation of solid and liquid uses centrifugation apparatus |
| CN211707102U (en) * | 2019-12-31 | 2020-10-20 | 广东省矿产应用研究所 | Centrifugal continuous concentrating machine |
| CN214515293U (en) * | 2020-12-30 | 2021-10-29 | 赤峰荣邦矿业有限责任公司 | Centrifugal separator for mineral separation |
| CN216173262U (en) * | 2021-10-15 | 2022-04-05 | 安徽东健化工科技有限公司 | Flat plate type automatic scraper lower discharging centrifugal machine |
| CN217368785U (en) * | 2022-02-09 | 2022-09-06 | 山东精准产品质量检测有限公司 | High-efficient centrifugal separation device of chemical industry |
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