CN107226353B - It is a kind of from dredging material-transporting system and its from dredging method - Google Patents
It is a kind of from dredging material-transporting system and its from dredging method Download PDFInfo
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- CN107226353B CN107226353B CN201610177279.XA CN201610177279A CN107226353B CN 107226353 B CN107226353 B CN 107226353B CN 201610177279 A CN201610177279 A CN 201610177279A CN 107226353 B CN107226353 B CN 107226353B
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- pipeline
- conveys
- outlet door
- hopper
- feed bin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/56—Switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
Abstract
The present invention relates to a kind of from dredging material-transporting system and its from dredging method, solves the problems, such as existing material-transporting system blocking, it includes feed bins；Hopper；Material conveys lower pipeline, and input end is connected to by hopper outlet door with hopper, and outlet end inside sets pressure detector by being connected to feed bin；Material conveys upper pipeline, is placed in material in parallel by the connection of several cross over pipes and conveys above lower pipeline, outlet end is connected to by upper pipe outlet door with feed bin；Negative-pressure air fan is connected to by bin outlet pipeline with feed bin top, is conveyed material in lower pipeline and the upper pipeline of material conveying and is generated negative pressure gas flow；Hopper outlet door, negative-pressure air fan, lower pipe outlet door, upper pipe outlet door and feed bin inlet and outlet door controlled by controller.Conveyance conduit is set to upper layer and lower layer by the present invention, and spent material conveys lower pipeline and carries out material conveying when normal operation, by the upper pipeline of material conveying when blocking, realizes the function of material-transporting system automatic dredging.
Description
Technical field
The present invention relates to material-transporting system anti-clogging technologies, refer in particular to a kind of suitable for negative-pressure pneumatic transmission system
In, system pipeline occur can voluntarily to dredge when internal blocking from dredging material-transporting system and its from dredging method.
Background technique
Negative-pressure pneumatic transmission system is the system of material conveying to be carried out using the energy of air, in particular to using with one
The aerodynamic energy of constant speed degree is come the system that conveys material.
In such transportation system, line clogging is one of most common and least tractable failure of pneumatic ash transmitting system,
Account for about 60% or more of pneumatic ash transmitting system failure rate.
Referring to Fig. 1, the structure of existing material-transporting system is as follows: the material in hopper 15 passes through the (electricity of hopper outlet door 14
Dynamic or operated pneumatic valve) enter in material conveying pipe 13；Material conveying pipe 13 is connected to feed bin 11；Negative-pressure air fan 16 passes through material
Storehouse outlet conduit 17 makes to generate negative pressure gas flow in material conveying pipe 13, and negative pressure gas flow carries material and enters in feed bin 11, part
Material is collected by filter bag 19, blows off feed bin 11 by filter bag blowback system 18 (with instrument air blowback).The hopper outlet
The inlet and outlet door of door 14, negative-pressure air fan 16 and feed bin is by controller control (not shown).
Referring to fig. 2, the operating method that existing material-transporting system occurs is as follows:
Pressure detector 12 is installed on material conveying pipe 13, pressure detector 12 detects conveyance conduit pressure value
(pressure value of negative pressure gas flow) if being not below the preset setting value of controller, material-transporting system is in normal
Run mode of operation；Once pressure detector 12 detects that conveyance conduit pressure value is lower than the setting value of controller setting, control
Device determines to block inside conveyance conduit 13, and controller stops chain closing hopper outlet door 14 and feed bin import and export door negative
The running of pressure fan 16, material-transporting system are shut down, and carry out pipe-dredging by plant maintenance personnel.That is, once system occurs to block up
Failure is filled in, can only be dredged by manually pipeline is removed.Since the pipeline of ash pipeline wire length and big wherein most is frame
Empty, it is difficult to overhaul, and pipeline of every dredging just needs 7-8h when serious.In addition, meeting during conveyance conduit dredging
It causes pipeline materials inside to leak, causes dust from flying and pollute environment.
The generation of the phenomenon that in order to reduce air-transport system line clogging to the greatest extent, takes following measures at present: (1) reinforcing fortune
Row parameter monitoring, anti-locking system negative pressure gas flow hypotony；(2) setting system starts the purge time of front and back, prevents residue
Material deposition；(3) periodically pipe inspection is safeguarded, prevents pipeline from damaged leakage occurs.Although taking above-mentioned measure, pneumatic transporting
Send pipeline still can plugging fault frequent occurrence, seriously affect production.
Summary of the invention
The purpose of the present invention is to solve problems of the existing technology, provide a kind of dredging material-transporting system certainly,
Make in negative-pressure pneumatic transmission system, system pipeline, which occurs to be able to carry out when internal blocking, voluntarily to be dredged.
It is a further object of the present invention to provide a kind of from dredging material-transporting system from dredging method.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of dredging material-transporting system certainly, it includes feed bin, the top of feed bin is equipped with filter bag, and the top of feed bin is equipped with filter
Bag blowback system also includes:
Hopper, built-in transported material；
Material conveys lower pipeline, and input end is connected to by hopper outlet door with the hopper, the material in conveyor hopper；
Its outlet end is connected to by lower pipe outlet door with the feed bin；Material conveys in lower pipeline and is equipped with pressure detector；
Material conveys upper pipeline, is arranged in parallel in the top that material conveys lower pipeline, and material conveys upper pipeline and material
It conveys and is interconnected after being welded between lower pipeline by several cross over pipes；The input end that material conveys upper pipeline welds a closure plate；
Its outlet end is connected to by upper pipe outlet door with feed bin；
Negative-pressure air fan is connected to by bin outlet pipeline with the top of feed bin, and pipeline and material are defeated under conveying material
It serves and generates negative pressure gas flow in pipeline；
The hopper outlet door, negative-pressure air fan, lower pipe outlet door, the inlet and outlet door of upper pipe outlet door and feed bin are equal
It is controlled by controller.
The hopper outlet door is electric and pneumatic valve.
The cross over pipe is along air-flow conveying direction in the inclination angle of 30-45 degree.
The upper pipe outlet door is electric and pneumatic valve.
It is another object of the present invention to what is be achieved through the following technical solutions:
A kind of recited above from dredging material-transporting system from dredging method, it includes following below scheme:
S1, transportation system is when operation starts by the chain unlatching negative-pressure air fan of controller, hopper outlet door, lower pipe outlet
Door, the inlet and outlet door of feed bin, and upper pipe outlet door is closed, under the negative-pressure air fan conveys material by bin outlet pipeline
Negative pressure is generated in pipeline；
S2 differentiates that material conveys whether the pipeline pressure value that the pressure detector in lower pipeline detects is lower than by controller
First setting value of controller setting, if being not below the first setting value, transportation system is operated normally, and material conveys down tube
Negative pressure gas flow in road carries material and enters in feed bin；
S3, if the pipeline pressure value that material conveys in lower pipeline is lower than the first setting value, controller determines hopper blanking
It is too fast, close hopper outlet door；The pipeline pressure value under material conveys in pipeline is continued to test, always until material conveys down tube
When the pipeline pressure value in road is not less than the first setting value, controller automatically opens hopper outlet door, by material convey lower pipeline after
Continuous conveying material；
S4, second of the pipeline pressure value of pipeline lower than controller setting sets under pressure detector detects that material conveys
When definite value, controller determines that material conveys and blocks inside lower pipeline, chain closing hopper outlet door, pipe outlet door in unlatching,
Material conveys and generates negative pressure in upper pipeline, and material conveys the material blocked in lower pipeline and is sent to material conveying by several cross over pipes
In upper pipeline, upper pipeline is conveyed by material and continues to transport material in feed bin；It is conveyed in lower pipeline at this point, continuing to test material
Pipeline pressure value, after material convey lower pipeline it is unobstructed after, pipeline pressure value is just not less than the second setting value, at this time controller
Pipe outlet door is automatically closed, and opens hopper outlet door, system is made to restore the journey for conveying lower pipeline material by material
Sequence.
Material conveys the negative pressure gas flow in lower pipeline most when first setting value is material-transporting system normal operation
Low pressure values；
Second setting value is lower than first setting value.
Beneficial effects of the present invention:
The prior art can only dredge when conveyance conduit plugging fault occurs by manually pipeline is removed.Inspection
It is difficult to repair, and section of tubing is related to high-altitude dangerous operation, and dust from flying during pipe-dredging, pollutes environment.This hair
Bright that conveyance conduit is set to upper layer and lower layer, spent material conveys lower pipeline and carries out material conveying when normal operation.Once object
Material conveys lower pipeline and blocks, and opens the outlet valve that material conveys upper pipeline, will be blocked under material conveying using negative pressure
Material in pipeline is transported to feed bin, and after the lower pipeline of material conveying is unobstructed, controller can restore to be conveyed down by material automatically
The program of pipeline material.System realizes the function of automatic dredging, thus solve the problems, such as Pneumatic conveying pipeline blocking,
It avoids and stops the phenomenon that labour repairs brought economic loss, avoids the dangerous life manually overhauled and generated and environmental pollution
Occur.
To further illustrate above-mentioned purpose, design feature and effect of the invention, below with reference to attached drawing to the present invention into
Row is described in detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing material-transporting system；
Fig. 2 is the operating method schematic diagram of existing material-transporting system；
Fig. 3 is the structural schematic diagram from dredging material-transporting system of the invention；
Fig. 4 is the present invention from dredging material-transporting system from dredging method flow diagram.
Specific embodiment
Below with reference to the attached drawing of embodiment, detailed description of the preferred embodiments.
Conveyance conduit is arranged to upper layer and lower layer by the present invention, and even lower layer's pipeline buildup blocks, and can still be relied on upper
Layer pipeline conveys buildup, to guarantee the normal operation of entire transportation system.
Referring to Fig. 3, dredging material-transporting system certainly of the invention, it includes feed bin 21, the top of feed bin 21 is equipped with filter bag
213, the top of feed bin 21 is equipped with filter bag blowback system 212 (with the blowback of instrument air)；
Hopper 26, built-in transported material；
Material conveys lower pipeline 23, and input end is connected by hopper outlet door 25 (electric and pneumatic valve) and hopper 26
It is logical, the material in conveyor hopper 26；Its outlet end is connected to by lower pipe outlet door 214 with feed bin 21；Material conveys lower pipeline
Pressure detector 22 is equipped in 23；
Material conveys upper pipeline 28, is arranged in parallel in the top that material conveys lower pipeline 23, and material conveys upper pipeline 28
It conveys with material and is interconnected between lower pipeline 23 by several cross over pipes 24；The input end that material conveys upper pipeline 28 is equipped with stifled
Plate 27；Its outlet end is connected to by upper pipe outlet door 29 with feed bin 21；
Negative-pressure air fan 210 is connected in the top of filter bag 213 with feed bin 21 by bin outlet pipeline 211, keeps material defeated
It send lower pipeline 23 and material to convey in upper pipeline 28 and generates negative pressure gas flow；
The hopper outlet door 25, negative-pressure air fan 210, lower pipe outlet door 214, upper pipe outlet door 29 and feed bin
Door is imported and exported by controller control (not shown).
It is above-mentioned from dredging material-transporting system, material convey lower pipeline 23 with material convey upper pipeline 28 pass through it is several
Siphunculus 24 is welded to connect, and for cross over pipe 24 along air-flow conveying direction in the inclination angle of 30-45 degree, material conveys the input end of upper pipeline 28
Closure plate 27 is installed, closure plate 27 conveys upper pipeline 28 with material and is welded to connect, and the upper tube that material conveys upper 28 outlet end of pipeline is said
Mouth door 29 is electric and pneumatic valve.
Referring to fig. 4, the above-mentioned method flow for carrying out dredging certainly from dredging material-transporting system is as follows:
S1, transportation system is when operation starts by the chain unlatching negative-pressure air fan 210 of controller, hopper outlet door 25, lower pipeline
Outlet portal 214, the inlet and outlet door of feed bin simultaneously close upper pipe outlet door 29, and negative-pressure air fan 210 is made by bin outlet pipeline 211
Material conveys in lower pipeline 23 and generates negative pressure；
S2 differentiates that material conveys the pipeline pressure value that the pressure detector 22 installed in lower pipeline 23 detects by controller
The first setting value whether (pressure value of negative pressure gas flow) sets lower than controller, it is defeated if being not below the first setting value
System is sent to operate normally, the negative pressure gas flow that material conveys in lower pipeline 23 carries material and enters in feed bin 21, and partial material is filtered
Bag 213 is collected, and is blown off in feed bin 21 by filter bag blowback system 212；
S3, if the pipeline pressure value that material conveys in lower pipeline 23 is lower than the first setting value, controller determines hopper 26
Blanking is too fast, closes hopper outlet door 25；It continues to test material and conveys pipeline pressure value in lower pipeline 23, always until material
When conveying the pipeline pressure value of lower pipeline not less than the first setting value, controller automatically opens hopper outlet door 25, defeated by material
Lower pipeline 23 is sent to continue to convey material；
S4, when pressure detector 22 detects that material conveys second of pipeline pressure value lower than controller setting of lower pipeline
When setting value, controller determines that material conveys and blocks inside lower pipeline 23 that chain closing hopper outlet door 25 is opened upper tube and said
Mouth door 29, at this point, material, which conveys, generates negative pressure in upper pipeline 28, the material blocked in the lower pipeline 23 of material conveying passes through several
Siphunculus 24 is sent to material and conveys in upper pipeline 28, conveys upper pipeline 28 by material and continues to transport material in feed bin 21；At this point,
The pipeline pressure value under material conveys in pipeline 23 is continued to test, after the lower pipeline 23 of material conveying is unobstructed, pipeline pressure value
The second setting value would not be lower than, controller can be automatically closed pipe outlet door 29 at this time, and open hopper outlet door 25,
System is set to restore to convey the program that lower pipeline 23 conveys material by material.
Material conveys the negative pressure gas flow in lower pipeline most when first setting value is material-transporting system normal operation
Low pressure values；Second setting value is lower than the first setting value.Citing: material conveys in lower pipeline when material-transporting system operates normally
Negative pressure gas flow pressure value in -18kPa between -40kPa, then: the first setting value=- 40kPa；Second setting value=-
50kPa。
Conveyance conduit is set to upper layer and lower layer by the present invention, and spent material conveys lower pipeline and carries out material when normal operation
Conveying.Once material conveys lower pipeline and blocks, the outlet valve that material conveys upper pipeline is opened, will be blocked in using negative pressure
The material that material conveys in lower pipeline is transported to feed bin, after material convey lower pipeline it is unobstructed after, controller can restore automatically by
Material conveys the program of lower pipeline material, so that system is realized the function of automatic dredging, to solve Pneumatic conveying pipeline
The problem of blocking.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate it is of the invention
Purpose, and it is not used as limitation of the invention, as long as within the essential scope of the present invention, the change to embodiment described above
Change, modification will all be fallen in the scope of the claims of the invention.
Claims (5)
1. a kind of from dredging material-transporting system, it includes feed bin, the top of feed bin is equipped with filter bag, and the top of feed bin is equipped with filter bag
Blowback system, it is characterised in that also include:
Hopper, built-in transported material；
Material conveys lower pipeline, and input end is connected to by hopper outlet door with the hopper, the material in conveyor hopper；It goes out
Mouth end is connected to by lower pipe outlet door with the feed bin；Material conveys in lower pipeline and is equipped with pressure detector；
Material conveys upper pipeline, is arranged in parallel in the top that material conveys lower pipeline, and material conveys upper pipeline and material conveys
It is interconnected after being welded between lower pipeline by several cross over pipes；The input end that material conveys upper pipeline welds a closure plate；It goes out
Mouth end is connected to by upper pipe outlet door with feed bin；
Negative-pressure air fan is connected to by bin outlet pipeline with the top of feed bin, conveys material in lower pipeline and material conveying
Negative pressure gas flow is generated in pipeline；
The hopper outlet door, negative-pressure air fan, lower pipe outlet door, upper pipe outlet door and feed bin inlet and outlet door by control
Device control processed,
Wherein, the cross over pipe along air-flow conveying direction be in 30-45 degree inclination angle,
The chain closing hopper outlet door when controller determines that material conveys blocking inside lower pipeline, pipe outlet door in unlatching,
Material conveys and generates negative pressure in upper pipeline, and material conveys the material blocked in lower pipeline, and by several cross over pipes to be sent to material defeated
It serves in pipeline, upper pipeline is conveyed by material and continues to transport material in feed bin, be achieved under the material conveying to blocking
Voluntarily dredging inside pipeline.
2. as described in claim 1 from dredging material-transporting system, it is characterised in that:
The hopper outlet door is electric and pneumatic valve.
3. as described in claim 1 from dredging material-transporting system, it is characterised in that:
The upper pipe outlet door is electric and pneumatic valve.
4. a kind of as described in any one of claims 1 to 3 from dredging material-transporting system from dredging method, it is characterised in that
Include following below scheme:
S1, transportation system is when operation starts by the chain unlatching negative-pressure air fan of controller, hopper outlet door, lower pipe outlet door, material
The inlet and outlet door in storehouse, and upper pipe outlet door is closed, the negative-pressure air fan makes material convey lower pipeline by bin outlet pipeline
Interior generation negative pressure；
S2 differentiates that material conveys whether the pipeline pressure value that the pressure detector in lower pipeline detects is lower than control by controller
First setting value of device setting, if being not below the first setting value, transportation system is operated normally, and material conveys in lower pipeline
Negative pressure gas flow carry material enter in feed bin；
S3, if the pipeline pressure value that material conveys in lower pipeline is lower than the first setting value, controller determines that hopper blanking is too fast,
Close hopper outlet door；The pipeline pressure value under material conveys in pipeline is continued to test, always until material conveys lower pipeline
When pipeline pressure value is not less than the first setting value, controller automatically opens hopper outlet door, and it is defeated to convey lower pipeline continuation by material
Send material；
S4, when pressure detector detects that material conveys second setting value of the pipeline pressure value lower than controller setting of lower pipeline
When, controller determines that material conveys and blocks inside lower pipeline, chain closing hopper outlet door, pipe outlet door in unlatching, material
Negative pressure is generated in conveying in pipeline, the material blocked in pipeline under material conveys is sent to material by several cross over pipes and conveys upper tube
In road, upper pipeline is conveyed by material and continues to transport material in feed bin；At this point, continuing to test the pipe under material conveys in pipeline
Road pressure value, after the lower pipeline of material conveying is unobstructed, pipeline pressure value is just not less than the second setting value, and controller is automatic at this time
Pipe outlet door in closing, and hopper outlet door is opened, so that system is restored the program for conveying lower pipeline material by material,
Wherein, the cross over pipe is along air-flow conveying direction in the inclination angle of 30-45 degree.
5. as claimed in claim 4 from dredging material-transporting system from dredging method, it is characterised in that:
First setting value is the minimal pressure that material conveys the negative pressure gas flow in lower pipeline when material-transporting system operates normally
Force value；
Second setting value is lower than first setting value.
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| CN201610177279.XA CN107226353B (en) | 2016-03-25 | 2016-03-25 | It is a kind of from dredging material-transporting system and its from dredging method |
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| CN201610177279.XA CN107226353B (en) | 2016-03-25 | 2016-03-25 | It is a kind of from dredging material-transporting system and its from dredging method |
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| CN107226353B true CN107226353B (en) | 2019-08-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108584443A (en) * | 2018-04-16 | 2018-09-28 | 江苏师范大学 | A kind of Pneumatic conveying pipeline blocks dredging system and method |
| CN110775642A (en) * | 2019-09-18 | 2020-02-11 | 厦门捷盛龙自动化设备有限公司 | Vacuum negative pressure conveyor for metal waste of punch press |
| CN112173724B (en) * | 2020-09-17 | 2022-04-15 | 宏工科技股份有限公司 | Control system and method for negative pressure conveying system and storage medium |
| CN113844898A (en) * | 2021-09-15 | 2021-12-28 | 北京首钢股份有限公司 | Anti-blocking discharging device and using method thereof |
| CN116374634B (en) * | 2023-06-07 | 2023-09-29 | 常州海盟塑业有限公司 | Positive pressure pneumatic conveying system |
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|---|---|---|---|---|
| CN2411238Y (en) * | 1999-12-09 | 2000-12-20 | 浙江菲达机电集团有限公司 | Automatic anti-block device for pneumatic conveying pipeline |
| CN1923643A (en) * | 2006-09-04 | 2007-03-07 | 李玉清 | Method of alternately operating long-distance dredging and transportation for concentrated phase powdery material |
| CN201494928U (en) * | 2009-09-08 | 2010-06-02 | 镇江市电站辅机厂 | Positive-negative pressure integral multi-functional pump conveying system device |
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