CN106423593A - Removing method of residual filter cakes in horizontal scraper unloading centrifuge and filter cloth driving mechanism - Google Patents
Removing method of residual filter cakes in horizontal scraper unloading centrifuge and filter cloth driving mechanism Download PDFInfo
- Publication number
- CN106423593A CN106423593A CN201610850382.6A CN201610850382A CN106423593A CN 106423593 A CN106423593 A CN 106423593A CN 201610850382 A CN201610850382 A CN 201610850382A CN 106423593 A CN106423593 A CN 106423593A
- Authority
- CN
- China
- Prior art keywords
- filter cloth
- centrifuge
- filter
- rotary drum
- horizontal scraper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
-
- 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
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
Abstract
The invention discloses a safe removing method of residual filter cakes in a horizontal scraper unloading centrifuge capable of improving the removing efficiency. The removing method comprises the following steps: in the rotating process of a drum of the centrifuge, fixed ports of flanges at two ends of filter cloth perform opposite reciprocating forward and reverse rotating motions in the rotating direction of a main shaft of the centrifuge or/and opposite reciprocating stretching shrinkage motions in the axial direction of the main shaft of the centrifuge to force stretching and twisting of cylindrical filter cloth, so that the filter cloth is deviated from the inner wall of the drum, and residual filter cake layers on the filter cloth are deformed and ruptured to deviate from the filter cloth. The invention further discloses a filter cloth driving mechanism in the horizontal scraper unloading centrifuge for realizing the residual filter cake removing method. The removing method of the residual filter cakes in the horizontal scraper unloading centrifuge and the filter cloth driving mechanism can be widely applied to various scraper unloading centrifuges.
Description
Technical field
The present invention relates to a kind of horizontal scraper discharging centrifuge is and in particular to in a kind of horizontal scraper discharging centrifuge
The sweep-out method of remaining filter cake and the drive mechanism of filter cloth.
Background technology
At present, generally using based on the wash water, backwash water, compressed gas blowback or roller in horizontal scraper discharging centrifuge
The removing remnants filter cake device of+air blowing etc., so that remaining cake layer softening and shedding, is finally reached the purpose of filter cloth regeneration.Upper
In the removing remnants filter cake device stated, it is most commonly that：Remaining filter cake dress is removed based on blow-back and two kinds of roller+air blowing
Put.
As shown in figure 1, a kind of removing remnants filter cake device based on roller+air blowing, its structure includes：Roller 3 and its drive
Motivation structure and valve 4 and its drive mechanism.Its course of work is：Under the cooperation of the air-flow that valve 4 sprays, scraper 2 is to filter cake
Layer 7 carries out scraper, and after scraper finishes, scraper 2 is maintained at current location, and the linear velocity of the rotary drum 1 of centrifuge is down to 1-5
Meter per second (m/s), roller 3 under the promotion of its drive mechanism (usually cylinder), from initial position rotate to filter cloth 8
Remaining cake layer contacts, and remaining cake layer is carried out with spreading, crushes, and the remaining filter cake block 9 after crushing is in its own gravity
In the presence of, drop in dump skip 5.When removing remaining filter cake in this way, need for roller 3 to be close to filter cloth 8
On cloth cover, along rotary drum 1 axial movement, checkout time is longer, more importantly, roller 3 in spreading filter cake, make it broken
During, roller 3 must be adjacent on the cloth cover of filter cloth 8, often filter cloth 8 is caused to damage, and, roller 3 is in spreading
Cheng Zhong, the surface pressure to filter cloth 8, the fine particle in filter cake can be pressed in the filter bores of filter cloth 8, can cause on the contrary to filter
The blocking in hole, thus have influence on the regeneration of filter cloth 8.
As shown in Fig. 2 the removing remnants filter cake device based on blow-back, its structure includes：Scraper 2 and its drive mechanism
With the blow-back mechanism being placed in rotary drum 1 outside.Its course of work is：Under the cooperation of the air-flow that valve 4 sprays, scraper 2 is right
Cake layer 7 carries out scraper, and after scraper finishes, scraper 2 is maintained at current location, by the linear velocity fall of the rotary drum 1 of centrifuge
To 1-5 meter per second (m/s), gases at high pressure are by carrying out blowback with the corresponding nozzle 6 of filter bores 11 on rotary drum 1 to filter cloth 8, high
The pressure of body of calming the anger makes the filter cloth 8 of correspondence position disengage the inwall of rotary drum 1, abuts on the cutting edge of scraper 2 so that filter cloth 8
On remaining cake layer scraped by scraper 2 because the active force of gases at high pressure be flexible force, thereby may be ensured that filter cloth 8 not by
Scratch, the remaining filter cake block 9 being scraped drops in dump skip 5.When removing remaining filter cake in this way, due to rotary drum 1
Rotate constantly, be only directed at the moment of the filter bores 11 of rotary drum 1 in nozzle 6, just have air-flow to pass through from this filter bores 11,
Thrust is produced to filter cloth 8.Therefore, because air-flow is too short to the action time of filter cloth 8, the impulsive force very little that filter cloth 8 is really subject to,
For slightly hard (hardened) filter cake of a bit, filter cloth 8 cannot be made to disengage from the inwall of rotary drum 1, thus remnants also cannot be made
Cake layer splits away off from filter cloth 8.
Additionally, above-mentioned two kinds of remaining filter cake remove devices need to consume substantial amounts of inert gas, thus greatly increase
Use cost.
It is true that for some viscosity are big, easily hardened material, above two remnants filter cake remove device can not be thorough
Remaining filter cake is removed on ground, thus leading to be effectively realized the regeneration of filter cloth.Therefore, in the case, generally still adopt
The method of labor cleaning.In actual use, generally run in centrifuge and carry out clearing up once for 8 times about, its concrete mistake
Cheng Wei：Close down machine → open door closure → removing remnants filter cake, remove after finishing, (whether door closure is closed tight to shut door closure → inspection
Real), then could start shooting.Whole reset procedure typically requires about 1 hour, leverages yield.
Content of the invention
The technical problem to be solved is：Horizontal type scraper a kind of safe and that elimination efficiency can be improved is provided to unload
The sweep-out method of remaining filter cake in material centrifuge.
For solving above-mentioned technical problem, the technical solution used in the present invention is：In a kind of horizontal scraper discharging centrifuge
The sweep-out method of remaining filter cake, its step is：In the rotation process of bowl, allow the fixation of tubular filter cloth two ends shirt rim
The rotation direction that opening's edge centrifuge principal axis makees relative reciprocal rotating campaign or/and the axial direction along centrifuge principal axis makees phase
To back and forth draw and stretch retracting motion, force filter cloth to disengage from drum inner wall, force remaining cake layer deformation on filter cloth and disconnected
Split until departing from filter cloth.
As a kind of preferred version, the sweep-out method of remaining filter cake in a kind of described horizontal scraper discharging centrifuge
In, control bowl rotating speed so that with filter cloth depart from remaining filter cake in the presence of its own gravity from filter cloth
Come off, and make the remaining filter cake that splits away off in dropping process with bowl in including scraper, dump skip
Part collide, thus being crushed further.
As a kind of preferred version, the sweep-out method of remaining filter cake in a kind of described horizontal scraper discharging centrifuge
In, the diameter of the fixing port on the shirt rim of described filter cloth two ends is less than bowl internal diameter.
Present invention also offers a kind of horizontal type scraper of the sweep-out method for realizing remnants filter cake of the present invention unloads
The drive mechanism of filter cloth in material centrifuge, including：Main shaft and be arranged on rotary drum on main shaft, the consolidating of described filter cloth two ends shirt rim
Determine the forward and backward port that mouth is separately positioned on close described rotary drum, be provided with the back-end ports of rotary drum in described rotary drum
Concentric with rotary drum rotate unload charging tray, the fixing port of described filter cloth rear end shirt rim is circumferentially disposed at described unloading on charging tray.
As a kind of preferred version, in the drive mechanism of filter cloth in a kind of described horizontal scraper discharging centrifuge, institute
The front end stating rotary drum is provided with lip ring, and the fixing port of described filter cloth front end shirt rim is arranged on the annular groove between lip ring and rotary drum
Interior.
As a kind of preferred version, in the drive mechanism of filter cloth in a kind of described horizontal scraper discharging centrifuge, institute
The fixing port stating the front end shirt rim of filter cloth is arranged in the annular groove between lip ring and rotary drum by front end filter cloth retainer ring.
As a kind of preferred version, in the drive mechanism of filter cloth in a kind of described horizontal scraper discharging centrifuge, institute
The fixing port stating filter cloth rear end shirt rim is arranged on described unloading on charging tray by rear end filter cloth retainer ring.
As a kind of preferred version, in the drive mechanism of filter cloth in a kind of described horizontal scraper discharging centrifuge, institute
The concrete set-up mode unloading charging tray rotation concentric with rotary drum stated is：In described main shaft, activity is equipped with discharging disk drive shaft,
The inner end of discharging disk drive shaft is connected with the described charging tray that unloads, the outer end of discharging disk drive shaft be arranged on being used for outside rotary drum
Driving discharging disk drive shaft is made relatively back and forth to draw to stretch the device of retracting motion or/and along centrifugation along the axial direction of centrifuge principal axis
The rotation direction of owner's axle is made relatively reciprocal rotating telecontrol equipment and is connected, and filter cloth can be deflected with respect to rotary drum or/and stretch
Contracting motion, thus so that filter cloth obtains drawing stretches and reverse.
The invention has the beneficial effects as follows：The present invention passes through to allow the fixing port of filter cloth two ends shirt rim during centrifuge rotates
Axial direction along centrifuge principal axis is made relatively back and forth to draw and is stretched retracting motion or/and the rotation direction along centrifuge principal axis is made relatively
Reciprocal rotating campaign so that filter cloth disengages from drum inner wall, the remaining filter cake deformation on filter cloth and rupture up to and filter cloth
Depart from.Due to during removing remaining filter cake, any hardware such as scraper or roller does not contact so that filter cloth with filter cloth
Safer；And, whole reset procedure does not need to close down machine, opens door closure, artificial removing and close the actions such as door closure, from
And substantially reducing checkout time, whole reset procedure generally only needs to 3～5 minutes, substantially increases elimination efficiency；Except this it
Outward, the broken filter cake splitting away off from filter cloth also can include scraper with bowl in dropping process, dump skip exists
Interior part collides, thus further being crushed, improves crushing effect.In addition, it is present invention also offers a kind of
The drive mechanism of filter cloth in horizontal scraper discharging centrifuge, be arranged on unload between charging tray and main shaft for by filter cloth two ends shirt rim
Fixing port make relatively back and forth to draw and stretch the device of retracting motion or/and along centrifuge principal axis along the axial direction of centrifuge principal axis
Rotation direction make relatively reciprocal rotating telecontrol equipment so that this drive mechanism can easily realize of the present invention
The sweep-out method of remaining filter cake, the structure of whole drive mechanism is very simple and reliable.
Brief description
Fig. 1 is the structural representation of remaining filter cake remove device described in background technology.
Fig. 2 is the structural representation of remaining filter cake remove device described in background technology.
Reference in Fig. 1 to Fig. 2 is：1st, rotary drum, 11, filter bores, 2, scraper, 3, roller, 4, valve, 5, discharging
Bucket, 6, nozzle, 7, cake layer, 8, filter cloth, 9, remaining filter cake block.
Fig. 3 is the structural representation of horizontal scraper discharging centrifuge original state of the present invention.
Fig. 4 is the structural representation after horizontal scraper discharging centrifuge of the present invention generates filter cake.
Fig. 5 is the structural representation after horizontal scraper discharging centrifuge scraper of the present invention finishes.
Fig. 6 is the structural representation that horizontal scraper discharging centrifuge of the present invention removes during remaining filter cake.
Fig. 7 is the mplifying structure schematic diagram of part A in Fig. 3.
Fig. 8 is the mplifying structure schematic diagram of part B in Fig. 3.
Fig. 9 is partial enlargement structural representation in Fig. 5.
Figure 10 is partial enlargement structural representation in Fig. 6.
Figure 11 is that filter cloth is in and draws the perspective view stretched with twisting states.
Reference in Fig. 3 to Figure 11 is：1st, support, 2, spindle motor, 3, shell, 4, rotary drum, 5, main shaft, 6, discharging
Disk drive shaft, 7, unload charging tray, 8, filter cloth, 9, scraper, 10, dump skip, 11, vacuum or jet discharge equipment, 13, front end filter cloth solid
Determine ring, 14, rear end filter cloth retainer ring, 15, lip ring, 16, remaining cake layer, 161, remaining filter cake block.
Specific embodiment
Below in conjunction with the accompanying drawings, describe in detail the sweep-out method of remaining filter cake in the horizontal scraper discharging centrifuge of the present invention with
And the specific embodiments of the drive mechanism of filter cloth.
As shown in figure 3, a kind of horizontal scraper discharging centrifuge, including：Support 1, the spindle motor 2 being arranged on support 1,
Shell 3 and main shaft 5 and be arranged on rotary drum 4 on main shaft 5, main shaft 5 passes through the transmission including driving belt, belt pulley
Mechanism is connected with spindle motor 2, and activity in main shaft 5 is equipped with discharging disk drive shaft 6, and the inner end of discharging disk drive shaft 6 is stretched into and turned
In drum 4, be provided with diameter be less than rotary drum 4 intracavity diameter unload charging tray 7, be provided with lip ring 15 at the front-end port of rotary drum 4, turn
It is provided with the filter cloth 8 of two ends Jun Dai shirt rim, the fixing port of filter cloth 8 front end shirt rim passes through front end filter cloth retainer ring 13 along week in drum 4
Into the annular groove between the lip ring 15 being fixed at rotary drum 4 front-end port and rotary drum 4 -- shown in Figure 7, filter cloth 8
The fixing port of rear end shirt rim is circumferentially fixed on by rear end filter cloth retainer ring 14 and unloads charging tray 7 at rotary drum 4 back-end ports
Upper -- shown in Figure 8；It is additionally provided with scraper 9 and its driving means in described rotary drum 4 and be located in described shell 3
Dump skip 10 in end plate.
In practical application, described horizontal scraper discharging centrifuge also includes：For discharging drive shaft 6 along centrifugation
The rotation direction of the main shaft 5 of machine makees relatively reciprocal rotating telecontrol equipment or/and the axial direction along the main shaft 5 of centrifuge is made relatively
The device stretching retracting motion is back and forth drawn (back and forth to draw the device stretching retracting motion and reciprocal rotating telecontrol equipment to belong to this area
Conventional techniques).
Certainly, the vacuum for aspirating powdery filter cake also can be worn on the end plate of above-mentioned shell 3 or jet draws off dress
Put 11.
The sweep-out method of remaining filter cake in a kind of horizontal scraper discharging centrifuge of the present invention, it concretely comprises the following steps：
(define shown in Fig. 5 and Fig. 9 after scraper being carried out to the cake layer described in Fig. 4 after centrifuge high speed scraper finishes
Remaining cake layer 16), reduce bowl 4 rotating speed (specific numerical value is to ensure the remaining filter cake block 161 of free state
Drop from filter cloth 8 in the presence of its own gravity), in low speed rotation, discharging disk drive shaft 6 is in external force for rotary drum 4
In the presence of by unload charging tray 7 with corresponding one end shirt rim of tubular filter cloth 8 fixing port along the main shaft 5 of centrifuge rotation
The fixing port of the other end shirt rim with respect to described filter cloth 8 for the direction makees reciprocal rotating campaign, and (filter cloth 8 of tubular is with respect to rotary drum
4 deflection angle is normally controlled between 5-45 degree), force the filter cloth 8 of tubular to draw and stretch, reverse -- referring to Fig. 6, Figure 10 and Tu
So that filter cloth 8 disengages from the inwall of rotary drum 4 shown in 11, meanwhile, the remaining cake layer 16 on filter cloth 8 stretches fold because drawing
And deform and rupture, become the remaining filter cake block 161 of several free states -- referring to shown in Fig. 6 and Figure 10, these dissociate
The remaining filter cake block 161 of state, in the presence of self gravitation, overcomes centrifugal force when slowly running to fall, in the mistake falling
Collide with the part including scraper 9, dump skip 10 in bowl 4 in journey, thus further being broken
Broken, finally drop in dump skip 10, and the passage along dump skip 10 draws off from rotary drum 4；Certainly, dredge if running into powdery
Loose filter cake, after remaining cake layer is peeled off and crushed, outwards can be suctioned out by described vacuum or jet discharge equipment 11.
Certainly, above-mentioned discharging disk drive shaft 6 can also drive the master unloading charging tray 7 along centrifuge in the presence of external force
The axial direction of axle 5 back and forth draw stretch retracting motion so that filter cloth 8 two ends shirt rim fixing port along the main shaft 5 of centrifuge axial direction
Make relatively back and forth to draw to stretch retracting motion, draw the amplitude stretching retracting motion to be normally controlled between 10-50 millimeter (mm), action frequency
Depending on can be according to the characteristic of filter cake with frequency；Above-mentioned discharging disk drive shaft 6 can also be in the presence of external force, along centrifugation
The axial direction of the main shaft 5 of machine is back and forth drawn while stretching retracting motion, back and forth positive and negative along the rotation direction work of the main shaft 5 of centrifuge
Transhipment is dynamic so that the fixing port of filter cloth 8 two ends shirt rim is made relatively back and forth to draw and being stretched retraction fortune in the axial direction of the main shaft 5 along centrifuge
While dynamic, the rotation direction along the main shaft 5 of centrifuge makees relatively reciprocal rotating campaign, allows the filter cloth 8 can be with respect to rotary drum 4
Deflect and stretching motion, thus so that the filter cloth 8 of tubular obtains drawing stretches and reverse.
In sum, only presently preferred embodiments of the present invention, is not used for limiting the scope of present invention enforcement, all according to
Impartial change and modification that shape described in scope of the invention as claimed, construction, feature and spirit are made, all should be included at this
In the right of invention.
Claims (8)
1. in a kind of horizontal scraper discharging centrifuge remaining filter cake sweep-out method, its step is：Rotation in bowl
During, allow the fixing port of tubular filter cloth two ends shirt rim make relative back and forth positive and negative transhipment along the rotation direction of centrifuge principal axis
Dynamic or/and along centrifuge principal axis axial directions are made relative back and forth drawing and are stretched retracting motion, force tubular filter cloth to draw and stretch, reverse, make
Filter cloth disengages from drum inner wall, the remaining cake layer deformation on filter cloth and fracture up to filter cloth disengaging.
2. in horizontal scraper discharging centrifuge according to claim 1 remaining filter cake sweep-out method it is characterised in that：Control
The rotating speed of bowl processed so that the remaining filter cake being departed from filter cloth is come off in the presence of its own gravity from filter cloth,
And make the remaining filter cake that splits away off in dropping process with bowl in the part including scraper, dump skip
Collide, thus being crushed further.
3. in horizontal scraper discharging centrifuge according to claim 1 and 2 remaining filter cake sweep-out method, its feature exists
In：The diameter of the fixing port on the shirt rim of described filter cloth two ends is less than bowl internal diameter.
4. in a kind of horizontal scraper discharging centrifuge filter cloth drive mechanism, including：Main shaft and be arranged on rotary drum on main shaft,
The fixing port of described filter cloth two ends shirt rim be separately positioned near described rotary drum forward and backward port it is characterised in that：Described
Be provided with rotation concentric with rotary drum in rotary drum at the back-end ports of rotary drum unloads charging tray, the fixing port of described filter cloth rear end shirt rim
It is circumferentially disposed at described unloading on charging tray.
5. in horizontal scraper discharging centrifuge according to claim 4 filter cloth drive mechanism it is characterised in that：Described turn
The front end of drum is provided with detachable lip ring, and the fixing port of described filter cloth front end shirt rim is arranged on the ring between lip ring and rotary drum
In groove.
6. in horizontal scraper discharging centrifuge according to claim 5 filter cloth drive mechanism it is characterised in that：Described filter
The fixing port of the front end shirt rim of cloth is arranged in the annular groove between lip ring and rotary drum by front end filter cloth retainer ring.
7. in the horizontal scraper discharging centrifuge according to any one of claim 4 to 6 filter cloth drive mechanism, its feature
It is：The fixing port of described filter cloth rear end shirt rim is arranged on described unloading on charging tray by rear end filter cloth retainer ring.
8. in the horizontal scraper discharging centrifuge according to any one of claim 4 to 6 filter cloth drive mechanism, described
The concrete set-up mode of discharging axle rotation concentric with rotary drum is：In described main shaft, activity is equipped with discharging disk drive shaft, discharging
The inner end of disk drive shaft is connected with the described charging tray that unloads, the outer end of discharging disk drive shaft be arranged on outside rotary drum for driving
Discharging disk drive shaft makees relatively reciprocal rotating telecontrol equipment or/and along centrifugation owner along the rotation direction of centrifuge principal axis
The axial direction of axle is made relatively back and forth to draw the device stretching retracting motion to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850382.6A CN106423593A (en) | 2016-09-26 | 2016-09-26 | Removing method of residual filter cakes in horizontal scraper unloading centrifuge and filter cloth driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850382.6A CN106423593A (en) | 2016-09-26 | 2016-09-26 | Removing method of residual filter cakes in horizontal scraper unloading centrifuge and filter cloth driving mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN106423593A true CN106423593A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850382.6A Pending CN106423593A (en) | 2016-09-26 | 2016-09-26 | Removing method of residual filter cakes in horizontal scraper unloading centrifuge and filter cloth driving mechanism |
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| CN (1) | CN106423593A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694244A (en) * | 2017-02-28 | 2017-05-24 | 蚌埠市兴利离心机制造有限公司 | Rotary drum filter cloth support hoop structure for vertical centrifugal machine |
| CN107583770A (en) * | 2017-08-02 | 2018-01-16 | 苏州盛天力离心机制造有限公司 | Pulling bag device and its control method and the bag turning centrifugal machine using the pulling bag device |
| CN114832476A (en) * | 2022-03-16 | 2022-08-02 | 合肥通用机械研究院有限公司 | Residual filter cake removing equipment and system with air blowing effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106694244A (en) * | 2017-02-28 | 2017-05-24 | 蚌埠市兴利离心机制造有限公司 | Rotary drum filter cloth support hoop structure for vertical centrifugal machine |
| CN107583770A (en) * | 2017-08-02 | 2018-01-16 | 苏州盛天力离心机制造有限公司 | Pulling bag device and its control method and the bag turning centrifugal machine using the pulling bag device |
| CN107583770B (en) * | 2017-08-02 | 2024-01-09 | 苏州盛天力离心机制造有限公司 | Bag pulling device, control method thereof and bag turning centrifugal machine using bag pulling device |
| CN114832476A (en) * | 2022-03-16 | 2022-08-02 | 合肥通用机械研究院有限公司 | Residual filter cake removing equipment and system with air blowing effect |
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Application publication date: 20170222 |