CN114751199A - Intelligent object conveying method and system - Google Patents
Intelligent object conveying method and system Download PDFInfo
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- CN114751199A CN114751199A CN202111446225.6A CN202111446225A CN114751199A CN 114751199 A CN114751199 A CN 114751199A CN 202111446225 A CN202111446225 A CN 202111446225A CN 114751199 A CN114751199 A CN 114751199A
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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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- 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
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
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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
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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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/042—Granular material
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Abstract
The present disclosure provides a smart object conveying method and a system thereof, wherein the smart object conveying method is suitable for conveying an object by gas, and comprises the following steps. Inputting gas and objects into a conveying pipe; detecting the working air pressure value in the conveying pipe; when the working air pressure value rises to a first preset pressure value in a first time section, sending an overpressure early warning signal; reducing the feeding amount of the object according to the overpressure early warning signal and improving the conveying amount of the gas; when the working air pressure value is reduced to a safety pressure value from a first preset pressure value in a second time section, sending a steady-state signal; and the feeding amount of the object is increased according to the steady-state signal.
Description
Technical Field
The present application relates to methods and systems for gas dynamics for object transport.
Background
In daily life there is a wide variety of objects to be transported, wherein the transport demand for bulk objects exists in various fields, such as the transport of powdery, granular objects of ores, coal, grains, sand, cement, food materials and even various industrial raw materials. At present, methods for transporting bulk materials can be broadly classified into three major categories, mechanical transportation, fluid pipe transportation, and container transportation, according to the transportation principle.
Wherein the container transportation requires a lot of manual cooperation and thus cannot be completed fully automatically. Mechanical transport involves complex mechanical arrangements, is often limited in its applicability by space requirements, and is also less able to avoid contamination of the surrounding environment. The fluid pipeline transportation can transport objects by taking fluid as a carrier in a closed pipeline, has high transportation efficiency, small occupied area, low cost and less pollution, and can be fully automated.
In practical applications, the transportation method can be selected according to the material characteristics of the transported object, and the fluid pipeline transportation has the excellent characteristics, so that the fluid pipeline transportation is one of the most widely used object transportation methods at present.
The fluid pipeline transportation can be divided into liquid medium transportation or gaseous medium transportation according to the transportation carrier. The fluid pipeline conveying of the object by the gaseous medium is applied to the object conveying according to gas dynamics. The object size is small (0.5-10 mm) for a large amount of powder and particle objects which need to be converted for many times in the production process of the automatic continuous process3) The monomer is extremely light and is easily blown by gas, so that the powder and particle objects are particularly suitable for conveying the objects by gaseous media according to gas dynamics.
The gas dynamics is applied to the conveying efficiency of conveying the miniature objects, the automation is easy to realize, and the environmental pollution is not easy to cause. However, when the micro-object moves in the pipe network through the gas, the fine particles may collide with each other and the pipe wall to take on irregular random small-range movement, additionally consuming the kinetic energy of the gas supplied to the object, and when the gas dynamics is applied to the powder and granular objects with different conveyed sizes and uneven properties, or when the turning point of the transmission pipeline is more, if the required gas flow and the corresponding pressure are less than the gas power loss and the gas pressure loss during the pipeline transmission, the object may generate the uncertain risk of blockage in the conveying pipeline, once the blockage condition can not be eliminated, the operator must stop the machine to carry out the pipe cleaning action, which is very time-consuming, if the blockage phenomenon in the conveying pipeline cannot be timely treated, the conveying pipeline is possibly continuously pressed and damaged, so that unexpected loss can be caused, and the subsequent production cost is greatly increased.
Disclosure of Invention
An intelligent object conveying method suitable for conveying an object by gas includes the following steps. Feeding gas into the tube at a first feed rate and feeding the object into the tube at a first feed rate; detecting the working air pressure value in the conveying pipe; when the working air pressure value rises to a first preset pressure value in a first time section, sending an overpressure early warning signal; reducing the first feeding amount of the object input conveying pipe to a second feeding amount according to the overpressure early warning signal, and increasing the first conveying amount of the gas input conveying pipe to a second conveying amount; when the working air pressure value is reduced to a safety pressure value from a first preset pressure value in a second time section, sending a steady-state signal; and increasing the second feeding amount of the object input conveying pipe to the first feeding amount according to the steady-state signal.
In one embodiment, when the working air pressure value decreases from the safety pressure value to a second preset pressure value within a third time period, a pressure loss warning signal is sent.
In one embodiment, when the working pressure value rises from the first predetermined pressure value to an equipment bearing pressure value, the gas is stopped from being input into the delivery pipe.
In one embodiment, the method further comprises detecting a vibration value of the delivery tube, and changing the delivery amount of gas delivered into the delivery tube when the vibration value is greater than an alarm vibration value.
The present case also provides an intelligent object conveying system, includes conveyer pipe, pan feeding device, gas source, pressure detection device, pressure early warning module and intelligent control module. The feeding device is connected with the conveying pipe to input objects. The gas source is connected with the delivery pipe to input gas. The pressure detecting device is arranged on the conveying pipe to measure the working air pressure value in the conveying pipe. The pressure early warning module is coupled to the pressure detection device and used for sending an overpressure early warning signal when the working air pressure value rises to a first preset pressure value in a first time segment, and sending a steady-state signal when the working air pressure value drops to a safety pressure value from the first preset pressure value in a second time segment. The intelligent control module is coupled with the feeding device, the gas source and the pressure early warning module, and is used for controlling the feeding device to reduce the first feeding amount of the object input conveying pipe to the second feeding amount according to the overpressure early warning signal, controlling the gas source to lift the first conveying amount of the gas input conveying pipe to the second conveying amount, and lifting the second feeding amount of the object to the first feeding amount according to the steady-state signal.
In one embodiment, the pressure warning module includes a storage device for storing the first feeding amount, the second feeding amount, the first conveying amount, the second conveying amount, the first preset pressure value, the safety pressure value, the first time segment and the second time segment.
In an embodiment, the pressure warning module includes a comparator for receiving the working air pressure value detected by the pressure detecting device and comparing the first preset pressure value with the safety pressure value according to the working air pressure value.
In an embodiment, the pressure warning module includes a timer for recording a time corresponding to the working air pressure detected by the pressure detecting device.
In one embodiment, the pressure detecting device is disposed at a bent portion of the conveying pipe.
In one embodiment, the delivery pipe includes a plurality of pipe sections and a branch valve, the pipe sections are connected to the branch valve, and the pressure detecting device is disposed at a position corresponding to the branch valve.
In one embodiment, the branch valve includes a plurality of flanges, and the pressure detecting device is disposed at a position corresponding to the plurality of flanges.
In one embodiment, the intelligent control system further comprises a vibration sensor disposed on the delivery pipe and coupled to the intelligent control module.
Therefore, the working air pressure value, the air flow and the object conveying capacity in the process of conveying the object by the conveying pipe can be monitored in real time, warning and handling can be carried out before the object is blocked, the damage of the whole system due to the blockage of the object is avoided, and a better conveying strategy can be intelligently adjusted to be used for a stable and energy-saving pneumatic system.
Drawings
FIG. 1 is a schematic diagram of a system architecture of an embodiment of the present intelligent object conveying system;
FIG. 2 is a schematic flow chart of an embodiment of the intelligent object conveying method of the present disclosure;
FIG. 3 is a schematic view of an embodiment of the present intelligent object conveying system;
fig. 4 is a schematic diagram of an embodiment of a pressure warning module of the intelligent object conveying system.
[ notation ] to show
10 gas source
20, conveying pipe
30: feeding device
40 pressure detecting device
50 pressure early warning module
51 storage device
52 comparator
53, timer
54 display
60 intelligent control module
70 vibration sensor
T pipe section
F is flange
M is diverging valve
Step S01, gas and object are input into the delivery pipe
Step S02, detecting the working pressure in the delivery pipe
Step S03, sending an over-pressure warning signal when the working air pressure value rises to a first preset pressure value in a first time section
Step S04, reducing the material supply amount of the object according to the overpressure early warning signal and increasing the gas delivery amount
Step S05, sending a steady-state signal when the working pressure value decreases from the first preset pressure value to the safe pressure value in the second time segment
Step S06, increasing the feeding amount of the object according to the steady state signal
Detailed Description
Please refer to fig. 1, which is a schematic diagram of a system architecture of an embodiment of the present intelligent object conveying system. Fig. 2 is a flowchart illustrating an embodiment of the intelligent object conveying method. The intelligent object conveying method executed by the intelligent object conveying system conveys powdery and granular objects in a mode of applying gas dynamics to object conveying (Pneumatic conveyor). By continuously monitoring the air pressure or vibration state in the conveying pipe 20 during the operation of conveying the object, the abnormal condition can be immediately found out, and the abnormal condition can be eliminated when occurring, so as to avoid the unexpected loss caused by the expansion of the abnormal condition. The type of application of gas dynamics to the transport of objects is not limited to dilute phase transport (low transport pressure, high transport speed), medium phase transport (medium transport pressure, high transport speed) or dense phase transport (high transport pressure, low transport speed).
Referring to fig. 1, an embodiment of the present intelligent object conveying system includes a gas source 10, a conveying pipe 20, a feeding device 30, a pressure detecting device 40, a pressure pre-warning module 50, and an intelligent control module 60. The gas source 10 and the material feeding device 30 are connected to the delivery pipe 20 respectively for feeding gas and material. The pressure detecting device 40 is disposed on the delivery pipe 20 to measure the working air pressure in the delivery pipe 20. The pressure warning module 50 is coupled to the pressure detecting device 40 and configured to send an overpressure warning signal when the working air pressure rises to a first preset pressure value in a first time period, and send a steady-state signal when the working air pressure falls from the first preset pressure value to a safe pressure value in a second time period. The intelligent control module 60 is coupled to the feeding device 30, the gas source 10 and the pressure warning module 50, and is configured to control the feeding device 30 to decrease the first feeding amount of the object into the conveying pipe 20 to the second feeding amount according to the overpressure warning signal, and simultaneously control the gas source 10 to increase the first feeding amount of the object into the conveying pipe 20 to the second feeding amount according to the steady-state signal.
Referring to fig. 2, in one embodiment, a smart object delivery method is adapted to deliver an object with gas and comprises the steps of: the gas and the object are input into the duct 20 (step S01). The working air pressure in the delivery pipe 20 is detected (step S02). When the working air pressure value rises to a first preset pressure value in a first time segment, an overpressure warning signal is sent (step S03). The amount of the material supplied to the object is reduced and the amount of the gas to be delivered is increased according to the overpressure warning signal (step S04). When the working air pressure value is decreased from the first preset pressure value to the safety pressure value within the second time period, a steady-state signal is sent (step S05). The amount of the material supplied to the object is increased in accordance with the steady-state signal (step S06).
Therefore, by continuously detecting the working air pressure value in the conveying pipe 20, the abnormal condition can be immediately known by the working air pressure value when the conveying work in the conveying pipe 20 is abnormal, and the abnormal condition is immediately treated, so that the abnormal condition can be quickly eliminated at the initial stage of the abnormal condition, and the serious damage and the generation of maintenance cost caused by the expansion of the abnormal condition are avoided.
In one embodiment of the gas and object input into the conveying pipe 20 (step S01), the object may be input from the feeding device 30 of the smart object conveying system, and the gas may be input from the gas source 10. Here, the gas source 10 may deliver gas into the duct 20 at a first delivery volume, and the material inlet device 30 may deliver material into the duct 20 at a first supply volume.
In one embodiment, the first delivery amount and the first feeding amount can be manually set by an operator, but the present disclosure is not limited thereto.
Referring to fig. 1, in one embodiment, the first delivery rate and the first feed rate may also be controlled by the intelligent control module 60. In this embodiment, the pressure warning module 50 may include a storage device 51. The storage device 51 is used for storing a first feeding amount, a first conveying amount, a first preset pressure value and a safety pressure value, wherein the first preset pressure value is greater than the safety pressure value. In one embodiment, the storage device 51 may be, but is not limited to, any type of fixed or removable Random Access Memory (RAM), Read-Only Memory (ROM), flash Memory (flash Memory), Hard Disk Drive (HDD), Solid State Drive (SSD), or the like or any combination thereof.
Referring to fig. 3 and 4, in one embodiment, the pressure warning module 50 of the smart object delivery system may also include a display 54. In this regard, the intelligent control module 60 may display an operator interface on the display 54 for an operator to select the conveyed object and its properties. When the operator selects the object to be transported, the intelligent control module 60 can read the first feeding amount and the first transporting amount of the gas corresponding to the object from the storage device 51 according to the object selected by the operator, and control the feeding device 30 and the gas source 10 to input the object and the gas according to the read first feeding amount and the first transporting amount. In this embodiment, the first delivery amount and the first feed amount may be set according to the historical delivery experience of the gas dynamics for delivering the same object or objects with similar characteristics by the object delivery device, but the present invention is not limited thereto.
Further, the first predetermined pressure value is a predetermined pressure value at which the accumulation of the object in the delivery pipe 20 may start to occur. The accumulation of the objects in the delivery pipe 20 usually occurs in a time section, and the objects are gradually accumulated, so when the working air pressure value in the delivery pipe 20 rises to the first preset pressure value in a time section, most of the objects in the delivery pipe 20 are blocked, and the time section when the working air pressure value rises to the first preset pressure value is the first time section.
When the working pressure value rises to a first preset pressure value in a first time interval, the pressure early warning module 50 sends out an overpressure early warning signal, after the intelligent control module 60 receives the overpressure early warning signal, the pressure early warning module 50 determines that the delivery pipe 20 may start to be blocked by an object according to the overpressure early warning signal, and outputs the overpressure early warning signal to the intelligent control module 60 according to the situation, the intelligent control module 60 can reduce the first feeding amount of the object input into the conveying pipe 20 to the second feeding amount according to the over-pressure warning signal, slow down the feeding amount of the object input into the conveying pipe 20, and the first delivery amount of the gas input delivery pipe 20 is increased to the second delivery amount, so that the delivery amount of the gas input delivery pipe 20 is increased, more gas pushes fewer objects, the possibility of pushing the objects is increased, and the condition that objects are likely to be stacked or a small amount of objects are stacked in the delivery pipe 20 is eliminated.
Referring to fig. 1 and 4, in one embodiment, the pressure warning module 50 may include a comparator 52 and a timer 53. The comparator 52 is used for receiving the working air pressure value detected by the pressure detecting device 40 and comparing the first preset pressure value with the safety pressure value according to the working air pressure value. The timer 53 is used for recording the time corresponding to each working air pressure value detected by the pressure detecting device 40, and calculating the corresponding time interval between the two working air pressure values.
When the material accumulation in the delivery pipe 20 is gradually eliminated, the gas flowing state in the delivery pipe 20 gradually becomes smooth from the blocking state, so that the working pressure value in the delivery pipe 20 is gradually reduced to the safe pressure value within a continuous time, and the continuous time for the working pressure value to return to the safe pressure value can be set as the second time segment.
That is, when the working pressure value in the conveying pipe 20 decreases from the first preset pressure value to the safe pressure value in the second time period, the pressure early warning module 50 determines that the material accumulation condition in the conveying pipe 20 is eliminated, and accordingly sends out the steady-state signal, and after receiving the steady-state signal, the intelligent control module 60 can increase the second material supply amount of the object input into the conveying pipe 20 to the first material supply amount according to the steady-state signal, so as to return the conveying amount of the conveyed object to the preset value.
Specifically, the duration of material accumulation elimination is usually longer than the time of material accumulation, so in one embodiment, the second time period is longer than the first time period. The first time period may be less than 3 seconds, and the second time period may be 15 to 20 seconds, but the disclosure is not limited thereto.
Further, when the accumulated material is generated in the delivery pipe 20 and cannot be removed, the working air pressure value in the delivery pipe 20 will rise to the first preset pressure value and cannot fall, in order to avoid the damage to the delivery pipe 20 or the whole system caused by the continuous accumulated material, the storage device 51 of the pressure early warning module 50 also stores a preset time, the comparator 52, according to the timing of the timer 53 and the pressure value detected by the pressure detection device 40, after the working air pressure value rises to the first preset pressure value and lasts for the preset time, judges that the accumulated material in the delivery pipe 20 is not removed, the intelligent control module 60 can stop the material feeding device 30 from continuously inputting the object into the delivery pipe 20 according to the judgment result, the gas source 10 increases the gas flow rate and continuously inputs the gas into the delivery pipe 20, thereby the gas source 10 continuously inputs the gas to push the object originally existing in the delivery pipe 20, and the possibility of pushing the objects and removing accumulated materials is further improved. In this embodiment, the intelligent control module 60 increases the second delivery rate of the gas input pipe 20 to a third delivery rate.
When the material feeding device 30 stops feeding the objects into the conveying pipe 20 and the continuous feeding of the gas still cannot eliminate the accumulated material, the accumulated material in the conveying pipe 20 may be very dense and cannot be pushed, if the continuous feeding of the gas into the conveying pipe 20 may cause the gas pressure in the conveying pipe 20 to continuously rise, thereby damaging the conveying pipe 20 or the whole system. Therefore, in this embodiment, the storage device 51 of the pressure warning module 50 also stores a device withstand pressure value. The bearing pressure value of the equipment is a preset value set according to the system architecture and materials when the intelligent object conveying system is designed. Therefore, the pressure early warning module 50 can determine that the air pressure in the conveying pipe 20 reaches the critical value when the working air pressure value rises from the first preset pressure value to the equipment bearing pressure value, and then the intelligent control module 60 controls the gas source 10 and the feeding device 30 to stop inputting gas and objects according to the determination result, so as to avoid the damage of the conveying pipe 20 or the whole system, which is difficult to repair, caused by continuously inputting gas and objects into the conveying pipe 20.
In one embodiment, the feeding device 30 may be composed of a feeding hopper and a rotary feeding valve. The object holding has pan feeding mouth and bin outlet in going into the hopper, and rotatory feed valve sets up in the bin outlet in order to receive the object of being exported by going into the hopper and carry out the feed.
In one embodiment, the rotary feed valve is mainly composed of a housing and an impeller, the housing is provided with a feed port and a discharge port, the impeller comprises a plurality of blades annularly arranged, and the impeller is accommodated in the housing and is positioned between the feed port and the discharge port. The material in the feeding hopper can be input into the rotary feeding valve through the discharging port of the feeding hopper and the feeding port of the rotary feeding valve by gravity, and the space between the blades of the impeller can be filled with the material when the material is input into the rotary feeding valve. Along with the rotation of the impeller, when the position of the object on the impeller corresponds to the position of the discharge port, the object can be discharged from the discharge port. In this embodiment, the object is input into the delivery pipe 20 by rotating the feeding valve, so as to generate the effects of locking the air flow and preventing the air flow from flowing backwards, thereby ensuring the air pressure in the intelligent object delivery system and the stability of the object input into the delivery pipe 20.
In one embodiment, the gas source 10 may be a Roots Blower (Roots Blower), but is not limited thereto. The screw blower is a rotary compressor which compresses and conveys gas by rotating two blade-shaped rotors in opposite directions in a cylinder, has the characteristics of simple structure, convenient manufacture, easy maintenance, stable air volume and small pressure change, and is suitable for gas conveying and pressurization in low-pressure occasions.
In one embodiment, the gas source 10 may be a cooperating fluid control valve to control the flow of gas into the delivery tube 20. In this embodiment, the intelligent control module 60 is coupled to a fluid control valve to control the delivery volume of the gas source 10.
In one embodiment, the storage device 51 of the pressure warning module 50 may store an operation lookup table and warning data. The operation lookup table comprises first delivery quantities and second delivery quantities of gas corresponding to different characteristics and different feeding quantities of various objects suitable for being delivered by the intelligent object delivery system. Specifically, the different characteristics of the object include, for example, different particle sizes or different humidity of the object, but the present disclosure is not limited thereto. The operation look-up table may be aggregated from historical data of gas dynamics applied to the objects transported by the object transport device. The early warning data includes a first preset pressure value and a safety pressure value.
In one embodiment, the Pressure detecting device 40 is a Pressure Sensor (also called a Pressure gauge). Pressure sensors are sensors used to measure liquids and gases. The pressure sensor converts pressure into an electric signal to be output when working, and is suitable for environments such as machinery, steel, petrochemical industry, electronic factory buildings and the like. In addition to pressure sensors that measure pressure directly, pressure sensors may also be used to measure other quantities indirectly, such as the flow rate or velocity of a liquid/gas.
In one embodiment, the pressure detecting device 40 may be a capacitance type pressure gauge, which mainly uses the principle of parallel capacitance plates, when the diaphragm of the pressure detecting device 40 is deformed by pressure, the gap between the diaphragm and the bottom plate electrode changes to cause the change of capacitance, and the pressure can be sensed by the change of capacitance. The capacitance type pressure gauge can realize accurate and low-power-consumption height and pressure change measurement. The capacitance type pressure gauge has the advantage of low power consumption, and has better resolution and temperature change resistance than the piezoresistive pressure gauge.
In one embodiment, the pressure detecting device 40 may be a piezoresistive pressure gauge, which mainly utilizes the characteristics of a piezoresistive material, and when the piezoresistive material is deformed by a stress change, the resistance value of the piezoresistive material is also changed, so as to measure the air pressure through the change of the resistance. The piezoresistive sensor has the advantages of high output voltage, high sensitivity, low manufacturing cost, etc.
In one embodiment, the pressure detecting device 40 may be a piezoelectric pressure gauge, which mainly utilizes the characteristics of piezoelectric materials, and when the piezoelectric materials are stressed, the piezoelectric materials generate electric polarization to provide electric charges, so as to measure the air pressure through the change of the electric charges. The piezoelectric pressure gauge has the excellent characteristics of simple structure, small volume, light weight, long service life and the like.
During the aerodynamic application of the object conveying work, the object to be conveyed moves relative to the conveying pipe 20, so that the object is difficult to avoid wearing the conveying pipe 20. Further, the object in the duct 20 may not be smoothly conveyed depending on the change of the characteristics of the object, the use state of the duct 20, the operation method, and the increase of the air humidity. The most easily accumulated objects in the delivery tube 20 are uneven surface locations or bent locations. In particular, the uneven surface inside the delivery pipe 20 may be the location of the flange F to connect different pipe sections T; the bending position has a plurality of bending points at the position of the branch valve M for delivering the object to different directions in addition to the bending type delivery pipe 20. When the object is not smoothly conveyed in the conveying pipe 20, the material is accumulated on the uneven surface or the bent position, and the air pressure is increased.
Therefore, in one embodiment, the pressure detecting device 40 can be disposed at least at the position of the conveying pipe 20 where the material is not smooth or bent, so as to sense the change of the air pressure in the conveying pipe 20 at the position where the material accumulation is most likely to occur. In other embodiments, the pressure detecting device 40 may be disposed at a position corresponding to the position of the branch valve M or the position corresponding to the flange F of the branch valve M. However, the present disclosure is not limited thereto, and the pressure detecting device 40 may also be disposed along the delivery pipe 20 to ensure that the abnormal pressure change occurs at each position on the delivery pipe 20.
In one embodiment, the pressure detecting device 40 of the smart object conveying system can detect not only the material accumulation in the conveying pipe 20 but also abnormal pressure loss. Since the intelligent object conveying system is inevitably vibrated when the whole system is operated, and the conveying pipe 20 from the object inlet to the object outlet may be composed of a plurality of pipe sections T, a flange F and a branch valve M, when the conveying pipe 20 is abnormally loosened or broken due to material fatigue, engineering defects or impact, the gas in the conveying pipe 20 will leak a lot in a short time and lose pressure.
In order to monitor the pressure loss condition, in one embodiment, the storage device 51 of the pressure warning module 50 stores a second predetermined pressure value and a third time period. When the working pressure value drops to the second preset pressure value in the third time period, the pressure warning module 50 determines that the conveying pipe 20 is abnormally depressurized, and sends a depressurization warning signal according to the determination result, and the intelligent control module 60 receives the depressurization warning signal and controls the gas source 10 and the feeding device 30 to stop inputting gas and objects according to the depressurization warning signal, so as to avoid waste of the gas and the objects.
In the process of applying the gas dynamics to the object conveying work, since the random collision between the gas and the object and the conveying pipe 20 cannot be avoided, the conveying pipe 20 generates vibration inevitably in the process of conveying the object, and the vibration is one of the factors for damaging the system structure. In one embodiment, the smart object conveying system further comprises a vibration sensor 70. In this embodiment, the vibration sensor 70 is disposed on the conveying pipe 20 to sense the vibration value of the conveying pipe 20, the storage device 51 of the pressure warning module 50 stores a vibration safety value and a vibration warning value, the comparator 52 compares the vibration safety value with the vibration warning value according to the vibration value sensed by the vibration sensor 70, when the vibration value sensed by the vibration sensor 70 rises to the vibration warning value, the comparator sends a vibration warning signal, and the intelligent control module 60 can change the conveying amount of the gas source 10, the gas pressure or the feeding amount of the feeding device 30 according to the vibration warning signal to reduce the vibration value of the system, thereby preventing the intelligent object conveying system from damaging the conveyed objects and the system pipe network due to vibration. In one embodiment, the vibration sensor 70 may be an accelerometer for measuring the instantaneous vibration.
Although the present disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure. Therefore, the scope of the present invention is defined by the appended claims.
Claims (12)
1. A smart object transport method adapted to transport an object with gas, comprising:
inputting gas into a delivery pipe at a first delivery rate, and inputting the object into the delivery pipe at a first supply rate;
detecting a working air pressure value in the conveying pipe;
when the working air pressure value rises to a first preset pressure value in a first time section, sending an overpressure early warning signal;
reducing the first feeding amount of the object input into the conveying pipe to a second feeding amount according to the overpressure early warning signal, and increasing the first conveying amount of the gas input into the conveying pipe to a second conveying amount;
when the working air pressure value is reduced to a safe pressure value from the first preset pressure value in a second time section, sending a steady-state signal;
increasing the second feeding amount of the object input into the conveying pipe to the first feeding amount according to the steady-state signal; and
when the working pressure value rises to the first preset pressure value and lasts for a preset time, the object is stopped to be input into the conveying pipe, and the second conveying capacity of the gas input into the conveying pipe is increased to a third conveying capacity.
2. The smart object conveying method according to claim 1, wherein a pressure loss warning signal is sent when the working air pressure value decreases from the safety pressure value to a second predetermined pressure value within a third time period.
3. The smart object transport method of claim 1, wherein the input of gas into the transport pipe is stopped when the working gas pressure rises from the first predetermined pressure value to a device bearing pressure value.
4. The smart object conveying method of claim 1 further comprising detecting a vibration value of the conveying tube and changing the amount of gas conveyed into the conveying tube when the vibration value is greater than a warning vibration value.
5. A smart object conveying system, comprising:
a delivery pipe;
a feeding device connected with the conveying pipe to input an object;
a gas source connected to the delivery pipe to input gas;
a pressure detecting device arranged on the conveying pipe to measure a working air pressure value in the conveying pipe;
a pressure pre-warning module, coupled to the pressure detecting device, for sending an overpressure pre-warning signal when the working pressure value rises to a first preset pressure value in a first time period, and sending a steady-state signal when the working pressure value falls from the first preset pressure value to a safe pressure value in a second time period; and
an intelligent control module, coupled to the material feeding device, the gas source and the pressure pre-warning module, for controlling the material feeding device to reduce a first feeding amount of the object into the conveying pipe to a second feeding amount according to the over-pressure pre-warning signal, and simultaneously controlling the gas source to increase a first feeding amount of the gas into the conveying pipe to a second feeding amount, and increasing the second feeding amount of the object to the first feeding amount according to the steady-state signal; the intelligent control module is further configured to control the feeding device to stop inputting the object into the conveying pipe and control the gas source to increase the second conveying amount of the gas input into the conveying pipe to a third conveying amount when the working pressure value rises to the first preset pressure value and lasts for a preset time.
6. The intelligent object conveying system of claim 5, wherein the pressure warning module comprises a storage device for storing the values of the first feeding amount, the second feeding amount, the first conveying amount, the second conveying amount, the first predetermined pressure value, the safety pressure value, the first time segment and the second time segment.
7. The intelligent object conveying system of claim 5, wherein the pressure warning module comprises a comparator for receiving the working air pressure value detected by the pressure detecting device and comparing the first preset pressure value with the safety pressure value according to the working air pressure value.
8. The intelligent object conveying system of claim 5, wherein the pressure warning module comprises a timer for recording the time corresponding to the working air pressure detected by the pressure detecting device.
9. The intelligent object conveying system of claim 5, wherein the pressure detection device is disposed at a bend of the conveying pipe.
10. The intelligent object conveying system of claim 9, wherein the conveying pipe comprises a plurality of pipe segments and a branching valve, the plurality of pipe segments are connected to the branching valve, and the pressure detecting device is disposed at a position corresponding to the branching valve.
11. The smart object conveying system of claim 10, wherein the branch valve comprises a plurality of flanges, and the pressure detecting device is disposed at a position corresponding to the plurality of flanges.
12. The intelligent object conveying system of claim 5, further comprising a vibration sensor disposed on the conveying pipe and coupled to the intelligent control module.
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| TW110100891 | 2021-01-08 | ||
| TW110100891A TWI747705B (en) | 2021-01-08 | 2021-01-08 | Intelligent object conveying method and system thereof |
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Also Published As
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| TW202227348A (en) | 2022-07-16 |
| TWI747705B (en) | 2021-11-21 |
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