CN116459954A - Self-adaptive coarse slime dehydration adjustment test system and method - Google Patents
Self-adaptive coarse slime dehydration adjustment test system and method Download PDFInfo
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- CN116459954A CN116459954A CN202310551429.9A CN202310551429A CN116459954A CN 116459954 A CN116459954 A CN 116459954A CN 202310551429 A CN202310551429 A CN 202310551429A CN 116459954 A CN116459954 A CN 116459954A
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- scraper
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- frequency motor
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- 230000018044 dehydration Effects 0.000 title claims abstract description 38
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 38
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 10
- 239000002002 slurry Substances 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 27
- 239000003245 coal Substances 0.000 claims description 21
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000007599 discharging Methods 0.000 description 10
- 238000010998 test method Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 241000876443 Varanus salvator Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- 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
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- 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
- B04B15/00—Other accessories for centrifuges
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- 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
- B04B9/02—Electric motor drives
-
- 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
- B04B9/10—Control of the drive; Speed regulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Centrifugal Separators (AREA)
Abstract
The invention relates to the technical field of coarse slime dehydration and provides a self-adaptive coarse slime dehydration test system, which comprises a screen basket, a scraper and a driving mechanism, wherein the driving mechanism comprises a first variable frequency motor and a second variable frequency motor, the screen basket is connected with an output shaft of the first variable frequency motor, the scraper is connected with an output shaft of the second variable frequency motor, an inlet end of a variable frequency slurry pump is communicated with a discharge port of a mixing bucket, an outlet end of the variable frequency slurry pump is communicated with a feed port of the coarse slime centrifuge, signal output ends of a belt scale and an online moisture monitor are connected with an input end of a control cabinet, and an output end of the control cabinet is simultaneously connected with a variable frequency slurry pump, a first variable frequency motor and a controlled end of the second variable frequency motor. The problems that the rotation speed ratio of the scraper and the screen basket is fixed, the rotation speed of the scraper or the screen basket cannot be independently regulated, and the perfect matching of the treatment capacity and the dewatering effect cannot be realized according to the actual condition of the site in the related art are solved.
Description
Technical Field
The invention relates to the technical field of coarse slime dehydration, in particular to a system and a method for adaptively adjusting coarse slime dehydration test.
Background
The existing centrifuge test method is a single machine test, namely, single machine equipment is used as a main body, single feeding is performed, multiple tests are performed by changing the rotation speed and feeding amount and changing the forms of different screen baskets (different screen slits and strips), manual sampling and testing are performed, experimental data such as product moisture, throughput and the like are obtained, and the parameters are adjusted by stopping machine every time, and repeated tests are performed. The lack of a real-time data acquisition and self-adaptive adjustment system can not be quickly adjusted and is continuously tested.
At present, the dehydration effect of a slime centrifuge and the influence of various factors on the dehydration effect remain in a theoretical calculation stage, and proper centrifuge parameters are difficult to select according to specific coal quality due to lack of system dehydration effect evaluation and test. Along with the increase of the coarse slime input selection amount, the horizontal scraper discharging slime centrifugal machine becomes a new generation of coarse slime dehydration equipment with large treatment capacity which is gradually favored by a plurality of coal preparation plants, and is mainly used for the solid-liquid separation of coarse slime dehydration or similar materials with the grain size of 3-0mm in the coal preparation plants, and the rotation speed difference of a spiral scraper and a screen basket is realized through a planetary cycloid needle wheel differential mechanism by adopting single belt wheel driving. The rotation speed of the screen basket determines the centrifugal force and influences the dewatering effect. The size of the rotating speed difference influences the dehydration effect and the treatment capacity, the rotating speed difference is large, the spiral scraper pushes the material quickly, the treatment capacity is large, but the material stays on the surface of the screen basket for a short time, and the dehydration effect is poor. The rotational speed of scraper and basket can be adjusted through inverter motor, but because differential mechanism transmission ratio is fixed, so the rotational speed ratio of scraper and basket is fixed, can not adjust the rotational speed of scraper or basket alone, can not realize the perfect adaptation of throughput and dehydration effect according to the scene actual conditions.
Disclosure of Invention
The invention provides a self-adaptive coarse slime dehydration test system and a self-adaptive coarse slime dehydration test method, which solve the problems that in the prior art, the rotation speed ratio of a scraper and a screen basket is fixed, the rotation speed of the scraper or the screen basket cannot be independently regulated, and the perfect matching of the treatment capacity and the dehydration effect cannot be realized according to the actual condition of the site.
The technical scheme of the invention is as follows: the utility model provides a coarse slime dehydration test system is adjusted in self-adaptation, includes coal slime centrifuge, and coal slime centrifuge includes basket, scraper and actuating mechanism, and basket and scraper all are connected with actuating mechanism, and the key lies in: the driving mechanism comprises a first variable frequency motor and a second variable frequency motor, the screen basket is connected with an output shaft of the first variable frequency motor, the scraper is connected with an output shaft of the second variable frequency motor, the system further comprises a mixing bucket, a belt scale with one end connected with a discharge port of the slime centrifugal machine and the other end connected with a feed inlet of the mixing bucket, and an online moisture monitor arranged above the belt scale, and further comprises a variable frequency slurry pump and a control cabinet, an inlet end of the variable frequency slurry pump is communicated with a discharge port of the mixing bucket, an outlet end of the variable frequency slurry pump is communicated with a feed inlet of the slime centrifugal machine, signal output ends of the belt scale and the online moisture monitor are connected with an input end of the control cabinet, and an output end of the control cabinet is connected with the variable frequency slurry pump, the first variable frequency motor and a controlled end of the second variable frequency motor.
The utility model provides a coal slime centrifuge, the coal slime centrifuge comprises a housing, the pan feeding pipe, basket band pulley and scraper band pulley, the basket rotates to set up in the casing, the scraper rotates to set up in the basket inboard, the exit end of pan feeding pipe extends to the scraper inside, the exit end of frequency conversion sediment stuff pump communicates with the entrance point of pan feeding pipe, the one end coaxial setting of pan feeding pipe is kept away from to the basket is provided with the basket axle, the one end coaxial setting and fixed connection of basket band pulley and basket axle, the one end of pan feeding pipe is kept away from to the basket axle after passing through the basket axle with the basket band pulley coaxial setting and fixed connection, basket band pulley and first inverter motor's output shaft, the bin outlet of seting up in the casing bottom is located the basket outside, the position corresponding with the basket in the casing bottom has been seted up the leakage fluid dram, coal slime centrifuge is still including setting up in the scraper and with the coaxial feed divider of setting of scraper axle, the exit end orientation of pan feeding pipe.
The diameter of the screen basket is linearly reduced from one end close to the feeding pipe to the other end, the scraper comprises a cone with an opening facing the feeding pipe and a spiral blade coiled on the outer wall of the cone, and the shape of the cone is matched with that of the screen basket.
The diameter of the material distributing disc is linearly increased from one end close to the material feeding pipe to the other end.
The diameter of the lower end of the mixing barrel is linearly reduced from top to bottom.
A first regulating valve is connected between the inlet end of the variable-frequency slurry pump and the discharge port of the mixing barrel, and a second regulating valve is connected between the outlet end of the variable-frequency slurry pump and the feed inlet of the coal slime centrifugal machine.
The system also comprises a discharge pipe communicated with the discharge hole of the mixing bucket, and a discharge valve is arranged on the discharge pipe.
The clearance between the scraper and the screen basket is 5-15mm.
The test method for the self-adaptive adjustment coarse slime dehydration test system is characterized in that: the method comprises the following steps:
A. the online moisture monitor sends the detected data to the control cabinet;
B. the control cabinet compares the received real-time moisture data with the set moisture data, and when the real-time moisture data is larger than the set moisture data, the control cabinet sends out an instruction, the rotating speed of the screen basket is increased through the first variable frequency motor, and the rotating speed difference between the screen basket and the scraper is reduced; when the real-time moisture data is smaller than the set moisture data, the control cabinet sends out an instruction, the rotating speed of the screen basket is reduced through the first variable frequency motor, and the rotating speed difference between the screen basket and the scraper is increased.
Step a further comprises the steps of: the belt scale sends the detected data to the control cabinet;
step B further comprises the steps of: the control cabinet compares the received real-time discharge amount data with the set discharge amount data, and when the real-time discharge amount data is smaller than the set discharge amount data, the control cabinet sends out an instruction to increase the rotating speed of the variable-frequency slurry pump and increase the feeding amount; when the real-time discharge amount data is larger than the set discharge amount data, the control cabinet sends out an instruction, the rotating speed of the variable-frequency slurry pump is reduced, and the feeding amount is reduced.
The working principle and the beneficial effects of the invention are as follows: setting a mixing drum, setting a belt scale between a discharge hole of a coal slime centrifugal machine and a feed inlet of the mixing drum, setting an online water monitor above the belt scale, setting a variable frequency slurry pump between a discharge hole of the mixing drum and the feed inlet of the coal slime centrifugal machine, wherein signal output ends of the belt scale and the online water monitor are connected with an input end of a control cabinet, and an output end of the control cabinet is connected with a variable frequency slurry pump, a first variable frequency motor and a controlled end of a second variable frequency motor. The screen basket is connected with an output shaft of the first variable frequency motor, the scraper is connected with an output shaft of the second variable frequency motor, the screen basket and the scraper are driven by the two variable frequency motors respectively and are free to rotate relatively, no fixed rotation speed difference or rotation speed ratio exists, the online moisture monitor monitors real-time moisture of products discharged to the belt scale by the coal slime centrifugal machine in a far infrared mode, a microwave mode and the like, the belt scale weighs discharged materials in real time, real-time processing capacity is calculated, two signals of the real-time processing capacity and the real-time moisture can be transmitted to the control cabinet and displayed in a visual window of the control cabinet in real time, the control cabinet can be used for adjusting and setting the size of moisture data and the set discharge capacity (numerical values are selected in a reasonable range and are related with each other), the control cabinet is used for comparing and analyzing the acquired real-time signals and the set value, the rotation speed of the screen basket is adjusted according to the size of the real-time moisture data, so that the rotation speed difference of the screen basket and the scraper is changed, and the rotation speed of the variable frequency slurry pump is adjusted according to the size of the real-time discharge capacity. The invention can adjust the rotation speed of the screen basket and the rotation speed difference of the screen basket and the scraper in real time, and the rotation speed difference of the screen basket and the scraper is not set independently, but the reason for setting the rotation speed difference of the screen basket and the scraper is that the discharge amount (processing capacity) can be accurately controlled (calculated), and the perfect matching of the processing amount and the dewatering effect can be realized according to the actual condition of the site. The variable-frequency slurry pump is used for pressurizing materials, pumping the materials from the mixing barrel to the slime centrifugal machine, and is controlled by the control cabinet, and the feeding quantity of the slime centrifugal machine can be controlled by adjusting the rotating speed.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the slime centrifuge of the present invention.
Fig. 3 is a functional block diagram of the present invention.
In the figure: 1. the mixing drum comprises a mixing drum body, 2 parts of a variable frequency slurry pump, 3 parts of a coal slime centrifuge, 3-1 parts of a sieve basket, 3-2 parts of a scraper, 3-3 parts of a sieve basket shaft, 3-4 parts of a shell, 3-5 parts of a feeding pipe, 3-6 parts of a sieve basket belt wheel, 3-7 parts of a scraper belt wheel, 3-8 parts of a distributing disc, 3-9 parts of a scraper shaft, 4 parts of an online moisture monitor, 5 parts of a belt scale, 6 parts of a control cabinet, 7 parts of a first variable frequency motor, 8 parts of a second variable frequency motor, 9 parts of a discharging pipe, 10 parts of a discharging valve, 11 parts of a first regulating valve, 12 parts of a second regulating valve.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments of the present invention, are intended to be encompassed within the scope of the present invention.
The system comprises a coal slime centrifugal machine 3, wherein the coal slime centrifugal machine 3 comprises a screen basket 3-1, a scraper 3-2 and a driving mechanism, the screen basket 3-1 and the scraper 3-2 are connected with the driving mechanism, the driving mechanism comprises a first variable frequency motor 7 and a second variable frequency motor 8, the screen basket 3-1 is connected with an output shaft of the first variable frequency motor 7, the scraper 3-2 is connected with an output shaft of the second variable frequency motor 8, the system further comprises a mixing bucket 1, a belt scale 5 with one end connected with a discharge port of the coal slime centrifugal machine 3 and the other end connected with a feed port of the mixing bucket 1, an online moisture monitor 4 arranged above the belt scale 5, a variable frequency slurry pump 2 and a control cabinet 6, an inlet end of the variable frequency slurry pump 2 is communicated with a discharge port of the mixing bucket 1, a signal output end of the belt scale 5 and the online moisture monitor 4 are connected with an input end of the control cabinet 6, and simultaneously the variable frequency motor 6 is connected with the variable frequency slurry pump 7 and the second variable frequency motor 8.
As a further improvement of the invention, the slime centrifugal machine 3 also comprises a shell 3-4, a feeding pipe 3-5, a screen basket pulley 3-6 and a scraper pulley 3-7, wherein the screen basket 3-1 is rotatably arranged in the shell 3-4, the scraper 3-2 is rotatably arranged at the inner side of the screen basket 3-1, the outlet end of the feeding pipe 3-5 extends into the scraper 3-2, the outlet end of the variable frequency slurry pump 2 is communicated with the inlet end of the feeding pipe 3-5, one end of the screen basket 3-1 far away from the feeding pipe 3-5 is coaxially provided with a screen basket shaft 3-3, one end of the scraper 3-2 far away from the feeding pipe 3-5 is coaxially provided with a scraper shaft 3-9, the screen basket pulley 3-6 is coaxially arranged and fixedly connected with the screen basket shaft 3-3, one end of the scraper shaft 3-9 far away from the feeding pipe 3-5 passes through the sieve basket shaft 3-3 and then is coaxially arranged and fixedly connected with the scraper belt pulley 3-7, the sieve basket belt pulley 3-6 is connected with an output shaft of the first variable frequency motor 7, the scraper belt pulley 3-7 is connected with an output shaft of the second variable frequency motor 8, a discharge hole formed in the bottom of the shell 3-4 is positioned at the outer side of the sieve basket 3-1, a liquid discharge hole is formed in the bottom of the shell 3-4 at a position corresponding to the sieve basket 3-1, the slime centrifuge 3 further comprises a distributing disc 3-8 which is arranged in the scraper 3-2 and is coaxially arranged with the scraper shaft 3-9, and the outlet end of the feeding pipe 3-5 faces the distributing disc 3-8.
As shown in FIG. 2, a screen basket belt wheel 3-6 is arranged at the right end of a screen basket shaft 3-3, a screen basket 3-1 is arranged at the left end of the screen basket shaft 3-3, and the screen basket shaft 3-3 is a hollow shaft; the scraper shaft 3-9 is arranged in the sieve basket shaft 3-3 through a bearing, the length of the scraper shaft is longer than that of the sieve basket shaft 3-3, the scraper shaft can rotate relatively freely, the right end of the scraper shaft 3-9 is provided with a scraper belt wheel 3-7, and the left end of the scraper shaft is provided with a scraper 3-2; the scraper 3-2 is positioned in the screen basket 3-1, and a cone of the scraper 3-2 is provided with a discharge hole for discharging materials from the interior of the scraper 3-2 to the screen basket 3-1. The first variable frequency motor 7 drives the screen basket 3-1 to rotate through the screen basket belt wheel 3-6 and the screen basket shaft 3-3, the second variable frequency motor 8 drives the scraper 3-2 to synchronously rotate through the scraper belt wheel 3-7 and the scraper shaft 3-9, the rotating speed of the screen basket 3-1 can be regulated by utilizing the first variable frequency motor 7, the rotating speed of the scraper 3-2 can be regulated by utilizing the second variable frequency motor 8, the rotating speed difference is kept between the scraper 3-2 and the screen basket 3-1, the upper end of the feeding pipe 3-5 is vertical and is used for receiving materials, the lower end of the feeding pipe 3-5 is inclined, and the materials can rapidly enter the scraper 3-2 from the feeding pipe 3-5. The material is applied with an initial speed through a distributing disc 3-8 which rotates along with the scraper 3-2 at a high speed, flows out of a discharging hole of the scraper 3-2 and is uniformly distributed into a space between the scraper 3-2 and the screen basket 3-1. Under the action of centrifugal force, water and fine particles pass through the sieve slits of the sieve basket 3-1 and are discharged through the liquid outlet; the dehydrated material is attached to the inner wall of the screen basket 3-1, and moves to the discharge port of the slime centrifugal machine 3 and falls outside the discharge port to be discharged under the action of the rotation speed difference between the scraper 3-2 and the screen basket 3-1, the inclination angle of the screen basket 3-1, the thrust of the scraper 3-2 and the like, and the dehydration process is continuously carried out.
As a further improvement of the present invention, the diameter of the basket 3-1 is linearly reduced from one end near the feed pipe 3-5 to the other end, and the scraper 3-2 includes a cone opening toward the feed pipe 3-5 and a spiral blade wound around the outer wall of the cone, the shape of the cone being matched with the shape of the basket 3-1. As shown in fig. 2, the feeding pipe 3-5 is positioned at the left side of the screen basket 3-1, the diameter of the screen basket 3-1 is linearly reduced from left to right, the opening of the cone faces to the left side, and the diameter of the cone is linearly reduced from left to right, so that the material is more beneficial to sliding down to the left side and is discharged from the discharge port.
As a further improvement of the present invention, the diameter of the distribution tray 3-8 increases linearly from one end near the feed pipe 3-5 to the other end. As shown in fig. 2. In this way, the material and the material distributing disc 3-8 have a large enough contact area, and the material is more beneficial to the outward diffusion, and then enters the screen basket 3-1 through the discharging holes on the cone of the scraper 3-2.
As a further improvement of the invention, the diameter of the lower end of the mixing barrel 1 is linearly reduced from top to bottom. As shown in fig. 1, materials in the mixing barrel 1 can be discharged, and material residues in the mixing barrel 1 are avoided.
As a further improvement of the invention, a first regulating valve 11 is connected between the inlet end of the variable frequency slurry pump 2 and the discharge port of the mixing bucket 1, and a second regulating valve 12 is connected between the outlet end of the variable frequency slurry pump 2 and the feed port of the slime centrifuge 3. As shown in fig. 1, the first regulating valve 12 can be used for regulating the flow of the material entering the variable frequency slurry pump 2, and the second regulating valve 12 can be used for regulating the flow of the material returning to the slime centrifugal machine 3, so that the dewatering requirement is better met. The controlled ends of the first regulating valve 11 and the second regulating valve 12 are connected with the control cabinet 6, the flow of the first regulating valve 11 and the second regulating valve 12 is regulated by using the parameter setting of the control cabinet 6, the manual regulation process is omitted, and the regulation precision is higher.
As a further improvement of the invention, the system also comprises a discharge pipe 9 communicated with the discharge hole of the mixing barrel 1, and a discharge valve 10 is arranged on the discharge pipe 9. As shown in fig. 1, the flow rate of the mixing drum 1 during discharging can be adjusted by using the discharging valve 10, so that the discharging requirement can be better met. The controlled end of the discharge valve 10 is connected with the control cabinet 6, the flow of the discharge valve 10 is adjusted by using the parameter setting of the control cabinet 6, the manual adjustment process is omitted, and the adjustment precision is higher.
As a further improvement of the invention, the gap between the scraper 3-2 and the screen basket 3-1 is 5-15mm, so that dehydrated materials can be smoothly scraped off, and abrasion caused by direct contact of the scraper 3-2 with the screen basket 3-1 is avoided.
Example 1, test method for adaptively adjusting a coarse slime dehydration test system, comprising the steps of:
A. the online moisture monitor 4 sends the detected data to the control cabinet 6;
B. the control cabinet 6 compares the received real-time moisture data with the set moisture data, the rotating speed of the scraper 3-2 is always larger than the rotating speed of the screen basket 3-1, when the real-time moisture data is larger than the set moisture data, the control cabinet 6 sends out a command, the rotating speed of the screen basket 3-1 is increased through the first variable frequency motor 7, the rotating speed difference between the screen basket 3-1 and the scraper 3-2 is reduced, so that the centrifugal force is increased, the stay time of materials in the screen basket 3-1 is increased, the dehydration time is prolonged, and the purpose of reducing the moisture of products is achieved; when the real-time moisture data is smaller than the set moisture data, the control cabinet 6 sends out an instruction, the rotating speed of the screen basket 3-1 is reduced through the first variable frequency motor 7, and the rotating speed difference between the screen basket 3-1 and the scraper 3-2 is increased, so that energy conservation and consumption reduction are realized, and the discharging is accelerated.
Example 2, test method of an adaptive adjustment coarse slime dehydration test system, comprising the steps of:
A. the online moisture monitor 4 sends the detected data to the control cabinet 6, and the belt scale 5 sends the detected data to the control cabinet 6;
B. the control cabinet 6 compares the received real-time moisture data with the set moisture data, meanwhile, the control cabinet 6 compares the received real-time discharge amount data with the set discharge amount data, the rotating speed of the scraper 3-2 is always larger than that of the sieve basket 3-1, when the real-time discharge amount data is smaller than the set discharge amount data, the control cabinet 6 sends out a command to increase the rotating speed of the variable-frequency slurry pump 2 and increase the feeding amount, the feeding amount is increased possibly to cause the increase of the product moisture, and when the real-time moisture data is larger than the set moisture data, the control cabinet 6 sends out a command to increase the rotating speed of the sieve basket 3-1 through the first variable-frequency motor 7, so that the rotating speed difference between the sieve basket 3-1 and the scraper 3-2 is reduced, the centrifugal force is increased, the stay time of the material in the sieve basket 3-1 is prolonged, and the dehydration time is prolonged, so that the purpose of reducing the product moisture is achieved; when the real-time discharge amount data is larger than the set discharge amount data, the control cabinet 6 sends out an instruction, the rotating speed of the variable frequency slurry pump 2 is reduced, the feeding amount is reduced, the reduction of the feeding amount possibly causes the reduction of product moisture, when the real-time moisture data is smaller than the set moisture data, the control cabinet 6 sends out an instruction, the rotating speed of the screen basket 3-1 is reduced through the first variable frequency motor 7, the rotating speed difference between the screen basket 3-1 and the scraper 3-2 is increased, so that energy conservation and consumption reduction are realized, and the discharge is accelerated.
The invention has the two test methods of the embodiment 1 and the embodiment 2, any one of the two test methods can be selected by utilizing the control cabinet, the test system continuously operates, the rotation speed of the screen basket is adaptively regulated in real time, so that the rotation speed difference of the screen basket and the scraper is changed until the real-time moisture data is equal to the set moisture data (or the real-time moisture data is equal to the set moisture data and the real-time discharge data is equal to the set discharge data), the relatively stable state is achieved, the centrifuge operating parameter in the stable state is the optimal dehydration parameter of the material, test data is provided for parameterization customization of the centrifuge and field application parameter selection, and the self-adaptive coarse slime dehydration test method and the intelligent system can be applied to an intelligent coal washery, improve the accuracy of coarse slime dehydration and the intelligent degree of the whole coal washery, and realize perfect matching of the processing amount and the dehydration effect according to the field actual situation.
Claims (10)
1. The utility model provides a coarse slime dehydration test system is adjusted in self-adaptation, includes coal slime centrifuge (3), and coal slime centrifuge (3) are including sieve basket (3-1), scraper (3-2) and actuating mechanism, and sieve basket (3-1) and scraper (3-2) all are connected its characterized in that with actuating mechanism: the driving mechanism comprises a first variable frequency motor (7) and a second variable frequency motor (8), the screen basket (3-1) is connected with an output shaft of the first variable frequency motor (7), the scraper (3-2) is connected with an output shaft of the second variable frequency motor (8), the system further comprises a mixing bucket (1), one end of the mixing bucket is connected with a discharge port of the slime centrifugal machine (3), the other end of the mixing bucket is connected with a belt scale (5) connected with a feed port of the mixing bucket (1), the belt scale is arranged above the belt scale (5), the belt scale also comprises a variable frequency slurry pump (2) and a control cabinet (6), an inlet end of the variable frequency slurry pump (2) is communicated with a discharge port of the mixing bucket (1), an outlet end of the variable frequency slurry pump (2) is connected with a feed port of the slime centrifugal machine (3), and signal output ends of the belt scale (5) and the on-line moisture monitor (4) are connected with an input end of the control cabinet (6), and an output end of the control cabinet (6) is simultaneously connected with a controlled end of the variable frequency slurry pump (2), the first variable frequency motor (7) and the second variable frequency motor (8).
2. The adaptive adjustment coarse slime dehydration test system of claim 1, wherein: the coal slime centrifugal machine (3) further comprises a shell (3-4), a feeding pipe (3-5), a screen basket belt wheel (3-6) and a scraper belt wheel (3-7), wherein the screen basket (3-1) is rotationally arranged in the shell (3-4), the scraper (3-2) is rotationally arranged at the inner side of the screen basket (3-1), the outlet end of the feeding pipe (3-5) extends into the interior of the scraper (3-2), the outlet end of the variable frequency slurry pump (2) is communicated with the inlet end of the feeding pipe (3-5), one end of the screen basket (3-1) far away from the feeding pipe (3-5) is coaxially provided with a screen basket shaft (3-3), one end of the screen basket (3-2) far away from the feeding pipe (3-5) is coaxially provided with a scraper shaft (3-9), the screen basket belt wheel (3-6) is coaxially arranged and fixedly connected with the screen basket shaft (3-3), one end of the scraper shaft (3-9) far away from the feeding pipe (3-5) is penetrated into the screen basket shaft (3-3) and then coaxially connected with the screen basket shaft (3-7), one end of the screen basket shaft (3-5) is coaxially arranged with the screen basket shaft (3-7) and fixedly connected with an output shaft (7) of the variable frequency motor (7) of the screen basket (7), the discharge hole formed in the bottom of the shell (3-4) is located at the outer side of the screen basket (3-1), the discharge hole is formed in the bottom of the shell (3-4) and in a position corresponding to the screen basket (3-1), the slime centrifugal machine (3) further comprises a distributing disc (3-8) which is arranged in the scraper (3-2) and is coaxial with the scraper shaft (3-9), and the outlet end of the feeding pipe (3-5) faces the distributing disc (3-8).
3. The adaptively adjusted coarse slime dehydration test system of claim 2, wherein: the diameter of the screen basket (3-1) is linearly reduced from one end close to the feeding pipe (3-5) to the other end, the scraper (3-2) comprises a cone with an opening facing the feeding pipe (3-5) and a spiral blade coiled on the outer wall of the cone, and the shape of the cone is matched with that of the screen basket (3-1).
4. The adaptively adjusted coarse slime dehydration test system of claim 2, wherein: the diameter of the material distributing disc (3-8) is linearly increased from one end close to the material feeding pipe (3-5) to the other end.
5. The adaptive adjustment coarse slime dehydration test system of claim 1, wherein: the diameter of the lower end of the mixing barrel (1) is linearly reduced from top to bottom.
6. The adaptive adjustment coarse slime dehydration test system of claim 1, wherein: a first regulating valve (11) is connected between the inlet end of the variable-frequency slurry pump (2) and the discharge port of the mixing barrel (1), and a second regulating valve (12) is connected between the outlet end of the variable-frequency slurry pump (2) and the feed inlet of the slime centrifugal machine (3).
7. The adaptive adjustment coarse slime dehydration test system of claim 1, wherein: the system also comprises a discharge pipe (9) communicated with the discharge hole of the mixing barrel (1), and a discharge valve (10) is arranged on the discharge pipe (9).
8. The adaptive adjustment coarse slime dehydration test system of claim 1, wherein: the clearance between the scraper (3-2) and the screen basket (3-1) is 5-15mm.
9. The method for adaptively adjusting a coarse slime dehydration test system as in claim 1, wherein: the method comprises the following steps:
A. the online moisture monitor (4) sends the detected data to the control cabinet (6);
B. the control cabinet (6) compares the received real-time moisture data with the set moisture data, when the real-time moisture data is larger than the set moisture data, the control cabinet (6) sends out an instruction, the rotating speed of the screen basket (3-1) is increased through the first variable frequency motor (7), and the rotating speed difference between the screen basket (3-1) and the scraper (3-2) is reduced; when the real-time moisture data is smaller than the set moisture data, the control cabinet (6) sends out an instruction, the rotating speed of the screen basket (3-1) is reduced through the first variable frequency motor (7), and the rotating speed difference between the screen basket (3-1) and the scraper (3-2) is increased.
10. The method for testing the self-adaptive coarse slime dehydration test system according to claim 9, wherein: step a further comprises the steps of: the belt scale (5) sends the detected data to the control cabinet (6);
step B further comprises the steps of: the control cabinet (6) compares the received real-time discharge amount data with the set discharge amount data, and when the real-time discharge amount data is smaller than the set discharge amount data, the control cabinet (6) sends out a command to increase the rotating speed of the variable-frequency slurry pump (2) and increase the feeding amount; when the real-time discharge amount data is larger than the set discharge amount data, the control cabinet (6) sends out an instruction, the rotating speed of the variable-frequency slurry pump (2) is reduced, and the feeding amount is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310551429.9A CN116459954A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive coarse slime dehydration adjustment test system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310551429.9A CN116459954A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive coarse slime dehydration adjustment test system and method |
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| Publication Number | Publication Date |
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| CN116459954A true CN116459954A (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310551429.9A Pending CN116459954A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive coarse slime dehydration adjustment test system and method |
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| Country | Link |
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| CN (1) | CN116459954A (en) |
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- 2023-05-16 CN CN202310551429.9A patent/CN116459954A/en active Pending
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