CN109969794A - A kind of powder negative-pressure conveying system and method - Google Patents
A kind of powder negative-pressure conveying system and method Download PDFInfo
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- CN109969794A CN109969794A CN201910363384.6A CN201910363384A CN109969794A CN 109969794 A CN109969794 A CN 109969794A CN 201910363384 A CN201910363384 A CN 201910363384A CN 109969794 A CN109969794 A CN 109969794A
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- 239000000843 powder Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 144
- 238000007599 discharging Methods 0.000 claims abstract description 46
- 230000003139 buffering effect Effects 0.000 claims abstract description 24
- 230000001502 supplementing effect Effects 0.000 claims abstract description 14
- 238000007664 blowing Methods 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910017435 S2 In Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005007 materials handling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
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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
- B65G53/36—Arrangements of containers
-
- 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
- B65G53/40—Feeding or discharging devices
- B65G53/50—Pneumatic devices
-
- 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
The present invention relates to a kind of powder negative-pressure conveying system and method, which includes controller and at least one powder conveying route；Powder conveying route includes material bin, material buffering chamber and vacuum feeder；Material bin is connected to material buffering chamber by material transportation pipeline, and wind speed measuring device is equipped at the gas supplementing opening of material transportation pipeline starting point, and material bin is put into material into material transportation pipeline by discharging device, and vacuum feeder is connect with vacuum source；Controller is electrically connected with each wind speed measuring device, discharging device, the wind speed for being measured according to the wind speed measuring device in each powder conveying route, generates corresponding control feeding instruction, and the discharging device being sent in this powder conveying route.The present invention can adjust accurately and in time material conveying capacity according to material transport status in pipeline.
Description
Technical field
The present invention relates to materials-handling technology field more particularly to a kind of powder negative-pressure conveying system and methods.
Background technique
Currently, due to the characteristic of powder material itself, especially wet stock, being particularly easy in powder material transportation system
Accumulation is formed in pipeline corner or corner, leads to line clogging, influences system worked well.To realize that powder material is uninterrupted
Ground conveying often needs the pressure controlling material conveying capacity according to transportation system.
But the factor due in material-transporting system, influencing pressure change is complicated, and different location pressure is not often identical, pressure
Power variation can not intuitively reflect material delivery situation in pipeline, and therefore, the pressure according to transportation system is regulated and controled, and lead to
Chang Wufa accurately and timely adjusts the conveying capacity of material, is still likely to result in line clogging, influences system use.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to solve powder delivery system in the prior art to be difficult to judge accurately and in time
Material delivery situation in system, the problem of material conveying capacity can not be adjusted according to the actual situation rapidly.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of powder negative-pressure conveying system, including controller and extremely
A few powder conveying route；
The powder conveying route includes material bin, material buffering chamber and vacuum feeder；The material bin and the object
Material buffering chamber is connected to by material transportation pipeline, and measuring wind speed is equipped at the gas supplementing opening of material transportation pipeline starting point and is filled
It sets, the material bin is put into material into the material transportation pipeline by discharging device, the material buffering chamber and described true
Empty feeder connection, for receiving material, the vacuum feeder is connect with vacuum source；
The controller is electrically connected with each wind speed measuring device, the discharging device, for according to each
The wind speed that the wind speed measuring device in the powder conveying route measures generates corresponding control feeding instruction, and sends
Discharging device into this powder conveying route.
It preferably, further include vacuum degree measuring equipment, the vacuum degree measuring equipment is electrically connected with the controller, is used for
Measuring system vacuum degree is simultaneously fed back, the vacuum that the controller is measured according to the vacuum degree measuring equipment to the controller
Degree generates corresponding control feeding instruction, and is sent to corresponding discharging device.
Preferably, including a plurality of powder conveying route, the material bin of powder conveying route described in wherein at least two
Same material buffering chamber is inputted by the material transportation pipeline, realizes mixing feeding.
Preferably, the material buffering chamber is equipped with material measurement module, for measuring the object inside the material buffering chamber
Doses；The controller is electrically connected with each material measurement module, is used for powder conveying route according to each
Described in the measurement of material measurement module as a result, generate the instruction of corresponding control feeding, and be sent to this powder conveying
Discharging device in route.
Preferably, also with each vacuum feeding mechatronics, the controller includes: the controller
Vacuum degree judging unit, the setting working value of vacuum degree and storage for measuring the vacuum degree measuring equipment
It is compared and judges, when judging that vacuum degree is higher than setting working value, generate instruction of starting to work, and to the corresponding vacuum
Feeder is sent；
Wind speed judging unit is connect with the vacuum degree judging unit, is used for after vacuum feeder start-up operation,
The wind speed that the wind speed measuring device measures is compared and is judged with the wind speed threshold value of storage, is put according to judging result generation
Expect control instruction, and is sent to the corresponding discharging device；Wherein, the wind speed threshold value includes initial threshold, first threshold
And second threshold；When judging wind speed greater than initial threshold, generation starts blowing instruction；It is raw when judging that wind speed is less than first threshold
It is instructed at dispensing speed is reduced；When judging that wind speed is greater than second threshold, and it is continued above time threshold, generates and improve dispensing speed
Instruction；
Timing unit is connect with the wind speed judging unit, for judge wind speed greater than the in the wind speed judging unit
Start timing when two threshold values, after timing reaches the time threshold of storage, Xiang Suoshu wind speed judging unit feedback.
Preferably, the initial threshold v0With the first threshold v1, second threshold v2Between meet v1< v2< v0, and institute
State first threshold v1Range be 0.45v0~0.55v0, the range of the second threshold is 0.6v0~0.8v0。
The present invention also provides a kind of powder negative pressure transportation methods, using powder negative pressure transportation as described in any one of the above embodiments
System realizes powder material conveying, specifically comprises the following steps:
S1, vacuum source and vacuum feeder are opened；
Wind speed opens homologue if wind speed is greater than initial threshold at S2, measurement material transportation pipeline starting point gas supplementing opening
The discharging device of feed bin carries out blowing, starts to convey material；
Wind speed at S3, real-time monitoring material transportation pipeline starting point gas supplementing opening executes if wind speed is less than first threshold
Step S4；If wind speed is more than or equal to first threshold and is less than or equal to second threshold, controls corresponding discharging device and remain current
Dispensing speed；If wind speed is greater than second threshold, S5 is thened follow the steps；
S4, the corresponding discharging device of control reduce dispensing speed, reduce material conveying capacity；
S5, start timing, if it is more than time threshold that wind speed, which is greater than the second threshold duration, control corresponding blowing dress
Raising dispensing speed is set, material conveying capacity is increased.
Preferably, the step S4 includes:
Corresponding discharging device pause blowing is controlled, after waiting wind speed to rise to third threshold value, controls corresponding blowing dress
Beginning blowing is set, and reduces dispensing speed before relatively suspending.
Preferably, in the step S5, if wind speed is greater than the second threshold duration and is no more than time threshold, phase is controlled
The discharging device answered maintains current dispensing speed conveying material.
Preferably, the first threshold v1, second threshold v2, third threshold value v3Between meet v1< v2< v3< v0, and institute
State first threshold v1Range be 0.45v0~0.55v0, the range of the second threshold is 0.6v0~0.8v0, the third threshold
The range of value is 0.8v0~0.95v0。
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that the present invention provides a kind of powder negative-pressure conveying system, packets
Include controller and at least one powder conveying route, every powder conveying route starting point, i.e. material transportation pipeline starting point
It is equipped with wind speed measuring device at gas supplementing opening, is capable of the air compensation (intake) of the real-time measurement powder conveying route, at gas supplementing opening
Wind speed can intuitively reflect the density degree of material in pipeline；Controller is connect with each wind speed measuring device, being capable of foundation
Wind speed variation accurately judges, and transportation system plugging risk is effectively reduced in timely regulating system conveying speed.
The present invention also provides a kind of powder negative pressure transportation method, this method detection system wind speed, when wind speed reaches requirement
When, start to convey；Real-time detecting system wind speed in transmission process quickly adjusts dispensing speed according to wind speed, changes material conveying
Frequency.When wind speed is low, show that material is more in pipeline, need to reduce the dispensing speed of discharging device in time, reduces material conveying
Frequency prevents material plugging；When wind speed is high, show that material is less in pipeline, conveying smoothly, at this moment appropriate can improve
The dispensing speed of discharging device improves material frequency of delivery, guarantees production capacity.
Detailed description of the invention
Fig. 1 is powder negative-pressure conveying system structural schematic diagram in the embodiment of the present invention one；
Fig. 2 is powder negative pressure transportation method and step schematic diagram in the embodiment of the present invention two.
In figure: 1: material bin；2: wind speed measuring device；3: discharging device；4: material transportation pipeline；5: material buffering chamber；
6: vacuum feeder；7: vacuum degree measuring equipment.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1, a kind of powder negative-pressure conveying system provided in an embodiment of the present invention, including controller and at least one
Powder conveying route, specifically described below:
Fig. 1 shows the powder negative-pressure conveying system (wherein controller is not shown) with a powder conveying route, and one
It include material bin 1, material buffering chamber 5 and vacuum feeder 6 in powder conveying route.Wherein, material bin 1 and material buffering chamber
5 are connected to by material transportation pipeline 4.4 starting point of material transportation pipeline is equipped with gas supplementing opening (such as Fig. 1 for the tonifying Qi into system
Port shown in middle left side), wind speed measuring device 2 is equipped at gas supplementing opening.Material bin 1 passes through discharging device 3 to material transportation pipe
It is put into material in road 4, is put at material and is located at gas supplementing opening rear.Material buffering chamber 5 is connected to vacuum feeder 6, for receiving
By material bin 1 convey from material.Vacuum feeder 6 is connect with vacuum source, and vacuum source (not shown in figure 1) is true for taking out
Sky provides negative pressure transportation environment, and direction shown in arrow is that vacuum source vacuumizes direction at the port of right side in Fig. 1.
Controller is electrically connected with each wind speed measuring device 2, discharging device 3.System includes at least one powder conveying
Route, controller are used for the wind speed measured according to the wind speed measuring device 2 in each powder conveying route, and generation is put accordingly
Expect control instruction, and the discharging device 3 being sent in this powder conveying route, controls corresponding powder conveying line work shape
State.
In the prior art, negative-pressure conveying system according to system pressure regulate and control material transport status, but due to system pressure without
Material transport status in the intuitive reaction system of method is easy to appear plugging phenomenon if reducing conveying capacity not in time, increases not in time defeated
The amount of sending then will affect transfer efficiency.The present invention provides a kind of powder negative-pressure conveying systems, during transportation, according to tonifying Qi
Wind speed regulator control system material conveying capacity at mouthful, wind speed can accurately and timely reflect that powder material conveys density degree in pipeline,
To accurately and rapidly adjust charging rate, material plugging is avoided, while guaranteeing production capacity.
Preferably, which further includes vacuum degree measuring equipment 7, and vacuum degree measuring equipment 7 is preferably disposed to vacuum feeder 6
It connecting at vacuum source, vacuum degree measuring equipment 7 is electrically connected with the controller, it is fed back for measuring system vacuum degree and to controller,
The vacuum degree that controller is measured according to vacuum degree measuring equipment generates corresponding control feeding instruction, and is sent to corresponding put
Expect device.The system meets the requirements the condition that value starts as conveying using vacuum degree, has enough vacuum pressures in guarantee system, is
Powder material conveying provides sufficient power.
Preferably, which further includes a plurality of powder conveying route, wherein at least two powder conveying
The material bin 1 of route inputs same material buffering chamber 5 by material transportation pipeline 4, that is, at least two powder conveying line sharings
The same material buffering chamber 5.The material of multiple material bins 1 can be delivered in same material buffering chamber 5 by the system, realize mixing
Feeding.
It is further preferred that material buffering chamber 5 is equipped with material measurement module, for measuring 5 materials inside of material buffering chamber
Amount, such as weight of material or height of materials (volume of material).Controller is electrically connected with each material measurement module, is used for basis
What material measurement module measured in each powder conveying route instructs as a result, generating corresponding control feeding, and is sent to this
Discharging device 3 in powder conveying route realizes the blowing amount of each powder conveying route of control.
Preferably, material measurement module includes Weighing module or level sensor, and Weighing module is for measuring material caching
Storehouse materials inside weight, level sensor is for measuring material buffering chamber materials inside height (volume of material).
In view of practical effect and system cost, wind speed measuring device 2 is preferably flowmeter, and discharging device 3 is preferred
For Starlike valve or screw feeder.Vacuum degree measuring equipment 7 is preferably pressure transmitter.
Preferably, controller is also electrically connected with each vacuum feeder 6, for controlling the working condition of vacuum feeder 6.Control
Device processed includes vacuum degree judging unit, wind speed judging unit and timing unit, in which:
The setting working value of vacuum degree and storage that vacuum degree judging unit is used to measure vacuum degree measuring equipment 7 carries out
Relatively and judge, when judging that vacuum degree is higher than setting working value, generates instruction of starting to work, and to corresponding vacuum feeder 6
It sends, controls corresponding vacuum feeder 6 and start to work.
Wind speed judging unit is connect with vacuum degree judging unit, for after the start-up operation of vacuum feeder 6, wind speed to be surveyed
The wind speed that amount device 2 measures is compared and judges with the wind speed threshold value of storage, generates corresponding blowing control according to judging result
System instruction, and sent to corresponding discharging device 3.Wherein, wind speed threshold value includes initial threshold, first threshold and second threshold.
When wind speed judging unit judges that wind speed is greater than initial threshold, generation starts blowing and instructs and send, and controls corresponding discharging device 3
Start blowing；When judging wind speed less than first threshold, generating, which reduces dispensing speed, instructs and sends, and controls corresponding discharging device
3 reduce dispensing speed, reduce blowing amount；When judging that wind speed is greater than second threshold, and it is continued above time threshold, generates to improve and put
Material speed command is simultaneously sent, and is controlled corresponding discharging device 3 and is improved dispensing speed, increases blowing amount.
Timing unit is connect with wind speed judging unit, for opening when wind speed judging unit judges that wind speed is greater than second threshold
Beginning timing after timing reaches the time threshold of storage, is fed back to wind speed judging unit.It is anti-that wind speed judging unit receives timing unit
The information of feedback, to generate and improve blowing speed when to reach wind speed greater than second threshold and being continued above the condition of time threshold
Degree is instructed and is sent.
It is further preferred that wind speed judging unit is used for when judging that wind speed is less than first threshold, generates pause blowing and refer to
It enables and sends, control corresponding discharging device 3 and suspend blowing, wind speed is waited to rise to third threshold value, regeneration starts blowing control
System instruction and reduction dispensing speed instruction, control corresponding discharging device 3 and restart to convey, and dispensing speed is reduced, subtract
Small conveying capacity.
In actual use, about the setting working value of system vacuum, initial threshold, the first threshold and second of wind speed
Threshold value, and about the time threshold of time, can be configured according to the specific structure of powder negative-pressure conveying system, wind speed
Initial threshold, first threshold, second threshold and third threshold value can pass through maximum stream flow that system can provide, pipe diameter and defeated
Test is sent to determine.If the unloaded maximum wind velocity measured in system zero load conveying test is v, initial threshold v0Range it is preferred
For 0.7v~0.9v.Initial threshold v0With first threshold v1, second threshold v2Between meet v1< v2< v0, it is preferable that the first threshold
Value v1Range be 0.45v0~0.55v0, the range of second threshold is 0.6v0~0.8v0.It is further preferred that third threshold value v3
Meet v2< v3< v0, and the range of third threshold value is 0.8v0~0.95v0。
Embodiment two
As shown in Fig. 2, the present embodiment two provides a kind of powder material negative pressure transportation side according to blast velocity control conveying capacity
Method realizes powder material conveying using powder negative-pressure conveying system as described in any one of the above embodiments, for any powder conveying line
Road specifically comprises the following steps:
The vacuum source and vacuum feeder 6 that S1, unlatching and vacuum feeder 6 connect；Preferably, vacuum source is being opened
Afterwards, measuring system vacuum degree opens vacuum feeder 6 if vacuum degree is higher than setting working value；
Wind speed opens homologue if wind speed is greater than initial threshold at S2, measurement material transportation pipeline starting point gas supplementing opening
The discharging device 3 of feed bin 1 carries out blowing, starts to convey material；
Wind speed at S3, real-time monitoring material transportation pipeline starting point gas supplementing opening executes if wind speed is less than first threshold
Step S4；If wind speed is more than or equal to first threshold and is less than or equal to second threshold, controls corresponding discharging device 3 and remain current
Dispensing speed；If wind speed is greater than second threshold, S5 is thened follow the steps；
S4, the corresponding discharging device 3 of control reduce dispensing speed, reduce material conveying capacity；
S5, start timing, if it is more than time threshold that wind speed, which is greater than the second threshold duration, control corresponding blowing dress
3 raising dispensing speeds are set, material conveying capacity is increased.
It should be noted that when powder negative-pressure conveying system includes a plurality of powder conveying route, be especially in the presence of two and
When the material bin 1 of the above powder conveying route inputs same material buffering chamber 5 by material transportation pipeline 4, specific method step
It is essentially identical with the above-mentioned method and step for being directed to a powder conveying route, pay attention to each device in same powder conveying route line
Between corresponding relationship.
The present invention provides a kind of powder negative pressure transportation method, the vacuum degrees of inspection system before starting to convey, with system
Vacuum degree is higher than setting working value as the precondition for preparing conveying, it is ensured that system has enough power；In conveying material
When, using the state of material is conveyed in wind speed judgement system, to adjust the dispensing speed of powder material in time.This method only will
The precondition that system vacuum starts as conveying, and conveying speed can more accurately and rapidly be judged by blast velocity control
Powder material conveys density degree in pipeline, to accurately control conveying capacity, while avoiding plugging, guarantees higher production
Can, improve system working efficiency.
Preferably, to further decrease plugging risk, step S4 includes: that the corresponding discharging device 3 of control suspends blowing, etc.
After wind speed rises to third threshold value, controls corresponding discharging device 3 and start blowing, and reduce dispensing speed before relatively suspending.It should
Method first suspends blowing, starts again at blowing after place's dredging to be occluded, and suitably drop when there are plugging sign (wind speed reduction)
Low blowing frequency, facilitates under the premise of avoiding system jams, quickly adjusts dispensing speed in suitable range, to be
System long-time stable and can efficiently convey material.
Preferably, in step S1, if opening vacuum source after a certain period of time, vacuum degree is lower than setting value, then checks vacuum source
It is whether normal.After confirming vacuum source normal non-fault, step S1 is executed again, and vacuum source failure is avoided to influence conveying.Step S2
In, if wind speed is less than or equal to initial threshold, check the air-tightness of material transportation pipeline.Confirm that material transportation pipeline air-tightness is good
After good fault-free, step S2 is executed again, material transportation pipeline is avoided leakage contribution conveying occur.Preferably, in step S5, if
Wind speed is greater than the second threshold duration no more than time threshold, then controls corresponding discharging device 3 and maintain current dispensing speed
Material is conveyed, prevents from improving conveying capacity rashly and causes pipeline blockage, help quickly to adjust dispensing speed in suitable range.
Particularly, the initial threshold, first threshold of wind speed, second threshold and third threshold value can be provided by system
Maximum stream flow, pipe diameter and conveying test are to determine.If the unloaded maximum wind velocity measured in system zero load conveying test is
V, initial threshold v0Range preferably from 0.7v~0.9v.Preferably, first threshold v1, second threshold v2, third threshold value v3Between
Meet v1< v2< v3< v0, and first threshold v1Range be 0.45v0~0.55v0, the range of second threshold is 0.6v0~
0.8v0, the range of third threshold value is 0.8v0~0.95v0。
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of powder negative-pressure conveying system, it is characterised in that: including controller and at least one powder conveying route；
The powder conveying route includes material bin, material buffering chamber and vacuum feeder；The material bin and the material are slow
Storage is connected to by material transportation pipeline, and wind speed measuring device, institute are equipped at the gas supplementing opening of material transportation pipeline starting point
It states material bin and material, the material buffering chamber and the vacuum feeding is put into the material transportation pipeline by discharging device
Machine connection, for receiving material, the vacuum feeder is connect with vacuum source；
The controller is electrically connected with each wind speed measuring device, the discharging device, for according to each
The wind speed that the wind speed measuring device in powder conveying route measures generates corresponding control feeding instruction, and is sent to this
Discharging device in powder conveying route described in item.
2. powder negative-pressure conveying system according to claim 1, it is characterised in that: it further include vacuum degree measuring equipment, institute
It states vacuum degree measuring equipment to be electrically connected with the controller, be fed back for measuring system vacuum degree and to the controller, it is described
The vacuum degree that controller is measured according to the vacuum degree measuring equipment generates corresponding control feeding instruction, and is sent to correspondence
Discharging device.
3. powder negative-pressure conveying system according to claim 1, it is characterised in that: including a plurality of powder conveying route,
In the material bins of at least two powder conveying routes same material buffering chamber is inputted by the material transportation pipeline,
Realize mixing feeding.
4. powder negative-pressure conveying system according to claim 1, it is characterised in that: the material buffering chamber is surveyed equipped with material
Module is measured, for measuring the inventory inside the material buffering chamber；The controller and each material measurement module are equal
Electrical connection, for the measurement of material measurement module described in powder conveying route according to each as a result, generating corresponding
Control feeding instruction, and the discharging device being sent in this powder conveying route.
5. powder negative-pressure conveying system according to claim 2, which is characterized in that the controller also with each vacuum
Feeding mechatronics, the controller include:
The setting working value of vacuum degree judging unit, vacuum degree and storage for measuring the vacuum degree measuring equipment carries out
Relatively and judge, when judging that vacuum degree is higher than setting working value, generate instruction of starting to work, and to the corresponding vacuum feeding
Machine is sent；
Wind speed judging unit is connect with the vacuum degree judging unit, is used for after vacuum feeder start-up operation, by institute
It states the wind speed that wind speed measuring device measures to be compared and judge with the wind speed threshold value of storage, blowing control is generated according to judging result
System instruction, and sent to the corresponding discharging device；Wherein, the wind speed threshold value includes initial threshold, first threshold and
Two threshold values；When judging wind speed greater than initial threshold, generation starts blowing instruction；When judging wind speed less than first threshold, generation is dropped
Low dispensing speed instruction；When judging that wind speed is greater than second threshold, and it is continued above time threshold, generates and improve dispensing speed and refer to
It enables；
Timing unit is connect with the wind speed judging unit, for judging that wind speed is greater than the second threshold in the wind speed judging unit
Start timing when value, after timing reaches the time threshold of storage, Xiang Suoshu wind speed judging unit feedback.
6. powder negative-pressure conveying system according to claim 5, it is characterised in that: the initial threshold v0With described first
Threshold value v1, second threshold v2Between meet v1< v2< v0, and the first threshold v1Range be 0.45v0~0.55v0, described
The range of second threshold is 0.6v0~0.8v0。
7. a kind of powder negative pressure transportation method, which is characterized in that defeated using powder negative pressure as claimed in any one of claims 1 to 6
It send system to realize powder material conveying, specifically comprises the following steps:
S1, vacuum source and vacuum feeder are opened；
Wind speed opens corresponding material bin if wind speed is greater than initial threshold at S2, measurement material transportation pipeline starting point gas supplementing opening
Discharging device carry out blowing, start convey material；
Wind speed at S3, real-time monitoring material transportation pipeline starting point gas supplementing opening thens follow the steps if wind speed is less than first threshold
S4；If wind speed is more than or equal to first threshold and is less than or equal to second threshold, controls corresponding discharging device and maintain current blowing
Speed；If wind speed is greater than second threshold, S5 is thened follow the steps；
S4, the corresponding discharging device of control reduce dispensing speed, reduce material conveying capacity；
S5, start timing, if it is more than time threshold that wind speed, which is greater than the second threshold duration, controls corresponding discharging device and mention
High dispensing speed increases material conveying capacity.
8. powder negative pressure transportation method according to claim 7, which is characterized in that the step S4 includes:
Corresponding discharging device pause blowing is controlled to control corresponding discharging device after waiting wind speed to rise to third threshold value and open
Beginning blowing, and dispensing speed is reduced before relatively suspending.
9. powder negative pressure transportation method according to claim 7, it is characterised in that:
In the step S5, if wind speed is greater than the second threshold duration and is no more than time threshold, corresponding blowing dress is controlled
It sets and maintains current dispensing speed conveying material.
10. powder negative pressure transportation method according to claim 8, it is characterised in that: the first threshold v1, second threshold
v2, third threshold value v3Between meet v1< v2< v3< v0, and the first threshold v1Range be 0.45v0~0.55v0, described
The range of second threshold is 0.6v0~0.8v0, the range of the third threshold value is 0.8v0~0.95v0。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363384.6A CN109969794A (en) | 2019-04-30 | 2019-04-30 | A kind of powder negative-pressure conveying system and method |
Applications Claiming Priority (1)
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| US11858757B2 (en) * | 2021-12-28 | 2024-01-02 | Mitsubishi Heavy Industries, Ltd. | Control device, granular material supply system, control method, and program |
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