CN109178945A - A kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control - Google Patents
A kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control Download PDFInfo
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- CN109178945A CN109178945A CN201810825137.9A CN201810825137A CN109178945A CN 109178945 A CN109178945 A CN 109178945A CN 201810825137 A CN201810825137 A CN 201810825137A CN 109178945 A CN109178945 A CN 109178945A
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- fluidised form
- material conveying
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- pipe
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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
- B65G53/34—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
A kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control, including storage tank, feeding warehouse pump, two-chamber conveyance conduit mechanism, loading head, gas source and control cabinet, the bottom of storage tank is connect by feed pipe with the feed inlet that feeding warehouse pumps, and feed pipe is equipped with storehouse and pumps inlet valve；In summary, the main delivery air of the present invention and auxiliary delivery air realize material suspended two-phase transportation jointly, auxiliary delivery air size conveys fluidised form by material and feed-line pressure characteristic jointly controls, and auxiliary delivery air size is automatically adjusted according to fluidised form and pressure signal, overall construction design is reasonable, can stablize and swimmingly carry out Dense Phase Pneumatic Conveying.
Description
Technical field
The invention belongs to Pneumatic Conveying Technology fields, and in particular to a kind of dense phase gas based on fluidised form and pressure characteristic joint control
Power transportation system.
Background technique
Pneumatic Conveying Technology is to realize that the short distance of non-adhesive bulk granular material conveys in pipeline using compressed air.Gas
Power conveying have many advantages, such as cleaning, environmental protection, safety, high degree of automation, but simultaneously also with power consumption greatly, be also easy to produce material
The disadvantages of broken, pipeline blockage, pipeline are worn.Dense Phase Pneumatic Conveying is to solve effective way of current pneumatic conveying Problems Existing
Diameter, but harshness is required to conveying material attribute and feed adjustment simultaneously, easily there is line clogging and unstable transport status.
Summary of the invention
The present invention provides that a kind of energy consumption is small, protection material prevents damage, defeated to solve shortcoming in the prior art
Send the smooth stable Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of be based on fluidised form and pressure characteristic joint control
Dense Phase Pneumatic Conveying System, including storage tank, feeding warehouse pump, two-chamber conveyance conduit mechanism, loading head, gas source and control cabinet,
The bottom of storage tank is connect by feed pipe with the feed inlet that feeding warehouse pumps, and feed pipe is equipped with storehouse and pumps inlet valve, gas source
It is connected by capstan and feeding warehouse pump, capstan is equipped with storehouse and pumps pressurizing valve, and storage tank passes through relief pipeline and charging
Storehouse pump connection, relief pipeline are equipped with storehouse and pump relief valve, the discharge port of feeding warehouse pump and the feed inlet of two-chamber conveyance conduit mechanism
Connection, is equipped with pipeline inlet valve at the feed inlet of two-chamber conveyance conduit mechanism, the discharge port of two-chamber conveyance conduit mechanism with gather materials
The feed inlet of device connects；Gas source is connect by auxiliary admission line with two-chamber conveyance conduit mechanism；
Control cabinet passes through signal wire respectively and storehouse pump inlet valve, storehouse pump pressurizing valve, storehouse pump relief valve, pipeline inlet valve, two-chamber are defeated
Pipeline mechanism and gas source is sent to connect.
Two-chamber conveyance conduit mechanism is formed by connecting by several material conveying pipes, and two adjacent material conveying pipes are logical
Flanged joint is crossed, the bottom of every material conveying pipe is fixed with auxiliary carrier wall, auxiliary carrier wall and material along its length
The auxiliary delivery air chamber of sealing is formed between the bottom of conveyance conduit, offers air inlet in auxiliary carrier wall, every material is defeated
The bottom of pipeline is sent to offer several air inlets, the angle of the conveying direction of the outgassing direction and material conveying pipe of air inlet is
Acute angle；The middle part of material conveying pipe is equipped with fluidised form monitoring device, and material conveying pipe both ends are respectively equipped with pressure transmitter；
Control cabinet passes through signal wire respectively and connect with all pressure transmitters and fluidised form monitoring device, gas source pass through respectively it is auxiliary into
Feed channel is connect with all air inlets, and auxiliary admission line is equipped with multistage adjusting intake valve.
Loading head is connect by purge pipe with gas source, and air purifier is connected in purge pipe.
Fluidised form monitoring device includes three high frequency camera shooting heads, and the middle part of material conveying pipe is equipped with glass window, three height
Frequency camera is along the circumferential direction evenly arranged on the outside of glass window, and the shooting direction of three high frequency camera shooting heads is towards material delivery pipe
The radial direction in road, three high frequency camera shooting heads pass through signal wire respectively and connect with control cabinet.
By adopting the above technical scheme, the invention has the following advantages:
(1), the present invention is under feeding warehouse pump and auxiliary delivery air collective effect, and by two-chamber conveyance conduit, mechanism carries out conveying object
Material, auxiliary delivery air size conveys fluidised form by material and feed-line pressure characteristic jointly controls, and is believed according to fluidised form and pressure
Number auxiliary delivery air size of automatic adjustment；Wherein the two-chamber conveyance conduit mechanism connected by more piece material conveying pipe and
At material conveying pipe is material conveyor chamber, delivery air chamber supplemented by the lower section of material conveying pipe, in material conveying pipe
Both ends are respectively provided with pressure transmitter, are pressure monitoring point, and fluidised form monitoring device is arranged at the middle part of material conveying pipe, is fluidised form
Monitoring point；The bottom of material conveying pipe be equipped with several air inlets, enter hole be it is skewed, and the outgassing direction of air inlet with
The angle of the conveying direction of material conveying pipe is acute angle, and such material can be carried out in material conveying pipe with suspended state
Conveying；According to the material conveying fluidised form and both ends pressure difference feature in material conveying pipe, the multistage aperture for adjusting intake valve is determined,
And then control the size for entering auxiliary delivery air, it is ensured that material conveys in the form of close phase in material conveying pipe to stablize；
(2), the fluidised form monitors by the way of the shooting of high frequency camera shooting head, mainly the stream to material in material conveying pipe
Dynamic form identification, and distributional pattern of the material in pipeline is identified by characteristics of image；The pressure characteristic is mainly to material
Static pressure letter in conveyance conduit, which closes, to be monitored, and the pressure characteristic in pipeline is stated by the pressure difference feature of point-to-point transmission；
(3), the fluidised form and pressure characteristic combined control system have logic judgment ability, can according to different fluidised form and
Different size of auxiliary delivery air is realized in differential pressure characteristics control；When material is covered with material conveying pipe section and material conveying pipe
It is normal two-phase transportation state, without opening auxiliary delivery air when both ends monitoring point pressure difference feature is normal；When material cloth full with substance
When conveyance conduit section and the increase of material conveying pipe both ends monitoring point pressure difference characteristic remarkable, it is feed blocking pipeline, needs to open
Auxiliary delivery air, the intensity of auxiliary delivery air is larger at this time；When material is not covered with material conveying pipe section and material delivery pipe
When road both ends monitoring point pressure difference characteristic remarkable reduces, transport status is flowed in sand dune for material, auxiliary delivery air need to be opened, it is auxiliary at this time
The intensity of delivery air is smaller；When material is not covered with material conveying pipe section and material conveying pipe both ends monitoring point pressure difference spy
Sign is material deposited tube bottom state, need to open auxiliary delivery air, at this time the moderate strength of auxiliary delivery air without when being substantially reduced.
In conclusion the main delivery air of the present invention and auxiliary delivery air realize material suspended two-phase transportation, auxiliary conveying jointly
Air-flow size conveys fluidised form by material and feed-line pressure characteristic jointly controls, and is automatically adjusted according to fluidised form and pressure signal
Auxiliary delivery air size, overall construction design is reasonable, can stablize and swimmingly carry out Dense Phase Pneumatic Conveying.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of two-chamber conveyance conduit mechanism；
Fig. 3 is enlarged drawing at A in Fig. 2；
Fig. 4 is the scheme of installation of fluidised form monitoring device.
Specific embodiment
As shown in Figs 1-4, the Dense Phase Pneumatic Conveying System of the invention based on fluidised form and pressure characteristic joint control, including storing
Tank 1, feeding warehouse pump 2, two-chamber conveyance conduit mechanism, loading head 3, gas source 4 and control cabinet 5, the bottom of storage tank 1 pass through feed pipe
Road 6 is connect with the feed inlet of feeding warehouse pump 2, and multiple groups can be set in feeding warehouse pump 2, and two groups of feeding warehouse pumps 2 are arranged in the present embodiment,
Feed pipe 6 is equipped with storehouse and pumps inlet valve 7, and gas source 4 is connect by capstan 8 with feeding warehouse pump 2, and capstan 8 is equipped with
Storehouse pumps pressurizing valve 9, and storage tank 1 is connect by relief pipeline 10 with feeding warehouse pump 2, and relief pipeline 10 is equipped with storehouse and pumps relief valve
11, the discharge port of feeding warehouse pump 2 is connect with the feed inlet of two-chamber conveyance conduit mechanism, at the feed inlet of two-chamber conveyance conduit mechanism
Equipped with pipeline inlet valve 12, the discharge port of two-chamber conveyance conduit mechanism is connect with the feed inlet of loading head 3；Gas source 4 by it is auxiliary into
Feed channel 14 is connect with two-chamber conveyance conduit mechanism；
Control cabinet 5 pumps inlet valve 7 by signal wire and storehouse respectively, storehouse pumps pressurizing valve 9, storehouse pumps relief valve 11, pipeline inlet valve 12,
Two-chamber conveyance conduit mechanism and gas source 4 connect.
Loading head 3 is connect by purge pipe 15 with gas source, and air purifier 13 is connected in purge pipe 15.
Two-chamber conveyance conduit mechanism is formed by connecting by several material conveying pipes 16, two adjacent material conveying pipes
16 by flanged joint, and the bottom of every material conveying pipe 16 is fixed with auxiliary carrier wall 17, auxiliary delivery pipe along its length
The auxiliary delivery air chamber 18 of sealing is formed between wall 17 and the bottom of material conveying pipe 16, offered in auxiliary carrier wall 17 into
Port 19, the bottom of every material conveying pipe 16 offer several air inlets 20, and the outgassing direction and material of air inlet 20 are defeated
The angle for sending the conveying direction of pipeline 16 is acute angle；The middle part of material conveying pipe 16 is equipped with fluidised form monitoring device 21, and material is defeated
16 both ends of pipeline are sent to be respectively equipped with pressure transmitter 22；Fluidised form monitoring device 21 includes three high frequency camera shooting heads 24, material conveying
The middle part of pipeline 16 is equipped with glass window 25, and three high frequency camera shooting heads 24 are along the circumferential direction evenly arranged on the outside of glass window 25,
Towards the radial direction of material conveying pipe 16, three high frequency camera shooting heads 24 lead to the shooting direction of three high frequency camera shooting heads 24 respectively
Signal wire is crossed to connect with control cabinet 5；
The material conveying pipe of the present apparatus can be designed to elbow structure or curved pipe structure according to actual needs, when material is defeated
When to send pipeline be elbow structure, the auxiliary delivery air in auxiliary carrier wall is opened always, it is possible to reduce material is to curved material
The abrasion of conveying pipeline inner wall.
Control cabinet 5 is connect by signal wire with all pressure transmitter 22 and fluidised form monitoring device 21 respectively, and gas source 4 divides
Not Tong Guo auxiliary admission line 14 connect with all air inlets 19, auxiliary admission line 14, which is equipped with, multistage adjusts intake valve 23.
The present invention carries out conveying object by material conveying pipe mechanism under feeding warehouse pump and auxiliary delivery air collective effect
Material, auxiliary delivery air size conveys fluidised form by material and feed-line pressure characteristic jointly controls, and is believed according to fluidised form and pressure
Number auxiliary delivery air size of automatic adjustment；Wherein the material conveying pipe mechanism connected by more piece material conveying pipe 16 and
At material conveying pipe 16 is material conveyor chamber, and delivery air chamber 18 supplemented by the lower section of material conveying pipe 16 is conveyed in material
The both ends of pipeline 16 are respectively provided with pressure transmitter 22, are pressure monitoring point, and at the middle part of material conveying pipe 16, setting fluidised form is supervised
Device 21 is surveyed, is fluidised form monitoring point；The bottom of material conveying pipe 16 be equipped with several air inlets 20, enter hole be it is skewed,
And the angle of the conveying direction of the outgassing direction of air inlet 20 and material conveying pipe 16 is acute angle, such material can be in material
It is conveyed in conveyance conduit 16 with suspended state；Fluidised form is conveyed according to the material in material conveying pipe 16 and both ends pressure difference is special
Sign determines the multistage aperture for adjusting intake valve 23, and then controls the size for entering auxiliary delivery air, it is ensured that material is conveyed in material
It is conveyed in the form of close phase by stablizing in pipeline 16；
The fluidised form monitors by the way of the shooting of high frequency camera shooting head 24, mainly the stream to material in material conveying pipe 16
Dynamic form identification, and distributional pattern of the material in pipeline is identified by characteristics of image；The pressure characteristic is mainly to material
Static pressure letter in conveyance conduit 16, which closes, to be monitored, and the pressure characteristic in pipeline is stated by the pressure difference feature of point-to-point transmission；
The fluidised form and pressure characteristic combined control system has logic judgment ability, can be according to different fluidised form and pressure difference
Characteristics Control realizes different size of auxiliary delivery air；When material is covered with 16 section of material conveying pipe and material conveying pipe 16
It is normal two-phase transportation state, without opening auxiliary delivery air when both ends monitoring point pressure difference feature is normal；When material cloth full with substance
When 16 section of conveyance conduit and the increase of 16 both ends monitoring point pressure difference characteristic remarkable of material conveying pipe, it is feed blocking pipeline, needs
Auxiliary delivery air is opened, the intensity of auxiliary delivery air is larger at this time；When material is not covered with 16 section of material conveying pipe and material
When 16 both ends monitoring point pressure difference characteristic remarkable of conveyance conduit reduces, transport status is flowed in sand dune for material, auxiliary conveying gas need to be opened
Stream, the intensity of auxiliary delivery air is smaller at this time；When material is not covered with 16 section of material conveying pipe and 16 liang of material conveying pipe
When holding monitoring point pressure difference feature without being substantially reduced, it is material deposited tube bottom state, auxiliary delivery air need to be opened, at this time auxiliary conveying gas
The moderate strength of stream.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (4)
1. a kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control, it is characterised in that: including storage tank, charging
The bottom of storehouse pump, two-chamber conveyance conduit mechanism, loading head, gas source and control cabinet, storage tank is pumped by feed pipe and feeding warehouse
Feed inlet connection, feed pipe be equipped with storehouse pump inlet valve, gas source by capstan and feeding warehouse pump connect, capstan
It being equipped with storehouse and pumps pressurizing valve, storage tank is connected by relief pipeline and feeding warehouse pump, and relief pipeline is equipped with storehouse and pumps relief valve, into
The discharge port of feed bin pump is connect with the feed inlet of two-chamber conveyance conduit mechanism, and pipe is equipped at the feed inlet of two-chamber conveyance conduit mechanism
Road inlet valve, the discharge port of two-chamber conveyance conduit mechanism and the feed inlet of loading head connect；Gas source passes through auxiliary admission line and double
The connection of chamber conveyance conduit mechanism；
Control cabinet passes through signal wire respectively and storehouse pump inlet valve, storehouse pump pressurizing valve, storehouse pump relief valve, pipeline inlet valve, two-chamber are defeated
Pipeline mechanism and gas source is sent to connect.
2. a kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control according to claim 1, feature
Be: two-chamber conveyance conduit mechanism is formed by connecting by several material conveying pipes, and two adjacent material conveying pipes pass through
Flanged joint, the bottom of every material conveying pipe are fixed with auxiliary carrier wall along its length, and auxiliary carrier wall and material are defeated
The auxiliary delivery air chamber for forming sealing between the bottom of pipeline is sent, air inlet, every material conveying are offered in auxiliary carrier wall
The bottom of pipeline offers several air inlets, and the angle of the conveying direction of the outgassing direction and material conveying pipe of air inlet is sharp
Angle；The middle part of material conveying pipe is equipped with fluidised form monitoring device, and material conveying pipe both ends are respectively equipped with pressure transmitter；
Control cabinet passes through signal wire respectively and connect with all pressure transmitters and fluidised form monitoring device, gas source pass through respectively it is auxiliary into
Feed channel is connect with all air inlets, and auxiliary admission line is equipped with multistage adjusting intake valve.
3. a kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control according to claim 1, feature
Be: loading head is connect by purge pipe with gas source, and air purifier is connected in purge pipe.
4. a kind of Dense Phase Pneumatic Conveying System based on fluidised form and pressure characteristic joint control according to claim 2, feature
Be: fluidised form monitoring device includes three high frequency camera shooting heads, and the middle part of material conveying pipe is equipped with glass window, and three high frequencies are taken the photograph
As head is along the circumferential direction evenly arranged on the outside of glass window, the shooting direction of three high frequency camera shooting heads is towards material conveying pipe
Radial direction, three high frequency camera shooting heads pass through signal wire respectively and connect with control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825137.9A CN109178945B (en) | 2018-07-25 | 2018-07-25 | Dense-phase pneumatic conveying system based on flow state and pressure characteristic joint control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810825137.9A CN109178945B (en) | 2018-07-25 | 2018-07-25 | Dense-phase pneumatic conveying system based on flow state and pressure characteristic joint control |
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| CN109178945A true CN109178945A (en) | 2019-01-11 |
| CN109178945B CN109178945B (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021240554A1 (en) * | 2020-05-25 | 2021-12-02 | Nte Holding S.R.L. | Fluid control system in pneumatic conveying ducts for powdered or granular material |
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| US11891255B2 (en) | 2020-05-25 | 2024-02-06 | Nte Holding S.R.L. | Fluid control system in pneumatic conveying ducts for powdered or granular material |
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| CN109178945B (en) | 2020-06-16 |
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Effective date of registration: 20221122 Address after: No. 9, Longcang Avenue, Yuhua Economic Development Zone, Nanjing, Jiangsu 210000 Patentee after: Nanjing Xiangrui Intelligent Equipment Technology Co.,Ltd. Patentee after: Jiangsu Zhongke Ruibo Technology Co.,Ltd. Address before: No. 36 North Ring Road, Jinshui District, Zhengzhou City, Henan Province, Henan Patentee before: NORTH CHINA University OF WATER RESOURCES AND ELECTRIC POWER |