CN114476684A - Pneumatic transmission system, speed control method and transmission control method - Google Patents
Pneumatic transmission system, speed control method and transmission control method Download PDFInfo
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- 239000008280 blood Substances 0.000 description 2
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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
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/36—Other devices for indicating or controlling movements of carriers, e.g. for supervising individual tube sections, for counting carriers, for reporting jams or other operating difficulties
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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
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/08—Controlling or conditioning the operating medium
- B65G51/16—Controlling or conditioning the operating medium varying, e.g. starting or stopping, gas pressure or flow
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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
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/24—Switches
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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
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/04—Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
- B65G51/26—Stations
- B65G51/28—Stations for despatch
Abstract
The invention relates to a pneumatic transmission system, a speed control method and a transmission control method, belonging to the technical field of pneumatic transmission systems, wherein the pneumatic transmission system comprises a fan, a vertical pipeline, a main horizontal pipeline and a sub horizontal pipeline, the fan is positioned on the main horizontal pipeline, the main horizontal pipeline is provided with a regulating valve, workstations positioned on different floors in the same building are sequentially communicated through the vertical pipeline, the bottom of the vertical pipeline is communicated with the sub horizontal pipeline, the vertical pipeline is at least provided with 1 pipeline, the vertical pipeline and the sub horizontal pipeline are arranged in a one-to-one manner, the sub horizontal pipeline is communicated with the main horizontal pipeline through a commutator, and a reducer is arranged on the main horizontal pipeline and between the fan and the commutator. Gentle, do not have the impact, avoid producing adverse effect to the sensitive sample of vibrations, guarantee the testing result degree of accuracy.
Description
Technical Field
The invention belongs to the technical field of pneumatic transmission systems, and particularly relates to a pneumatic transmission system, a speed control method and a transmission control method.
Background
The pneumatic transmission system is a modern rapid logistics transmission tool, is applied to places such as hospitals, banks, office buildings, supermarkets, production workshops and laboratories, which need to transmit a large number of articles every day, and is used for transmitting articles with any appropriate volume such as medical records, diagnostic books, medicines, laboratory sheets, bills, cash, documents and the like. The articles are placed in a conveying carrier during conveying, such as special conveying bottles, and the conveying bottles ensure that the articles are not damaged in the conveying process. The pneumatic transmission system uses the transmission bottle as a carrier, uses high-pressure air as power, carries out point-to-point article transmission in a closed pipeline, and conveys articles from one workstation to another workstation, so that the safety of conveying the articles can be effectively guaranteed, the time can be saved, and the working efficiency is improved. The existing pneumatic conveying system usually runs at a constant speed, and individual systems can set high and low speeds, also the constant speed, so that different speeds can not be set according to different conveyed objects, and meanwhile, impact exists when acceleration is excessively accelerated in starting and stopping.
Disclosure of Invention
In order to solve the above problems, a pneumatic transmission system, a speed control method and a transmission control method are proposed.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a pneumatic transmission system, includes fan, vertical pipeline, main horizontal pipeline and sub-horizontal pipeline, the fan is located main horizontal pipeline, and is equipped with the governing valve on the road of main horizontal pipeline, and the workstation that is located different floors in same building communicates through vertical pipeline in proper order, and the bottom and the sub-horizontal pipeline intercommunication of vertical pipeline, vertical pipeline is equipped with 1 at least, and vertical pipeline and sub-horizontal pipeline one to one setting, sub-horizontal pipeline passes through commutator and main horizontal pipeline intercommunication, main horizontal pipeline is gone up and is located and is equipped with the reduction gear between fan and the commutator.
Furthermore, a position photoelectric sensor and a plurality of speed photoelectric sensors are arranged on the sub-horizontal pipeline, and the plurality of speed photoelectric sensors are arranged at intervals along the sub-horizontal pipeline.
Further, the position photosensor is located between the commutator and the speed photosensor.
Further, the fan is communicated with the main horizontal pipeline through a three-way valve, the three-way valve can be switched to an air blowing mode, an air suction mode and an idle load mode, the fan blows air into the system in the air blowing mode, the fan sucks air into the system in the air suction mode, and the fan neither blows air into the system nor sucks air into the system in the idle load mode.
Furthermore, a pressure sensor is arranged on the main horizontal pipeline.
Furthermore, the three-way valve, the pressure sensor, the position photoelectric sensor, the speed photoelectric sensor and the regulating valve are all in communication connection with the control terminal.
Furthermore, photoelectric switches in communication connection with the control terminal are arranged in the commutator and the workstation.
In addition, the invention also provides a speed control method of the pneumatic transmission system, which comprises the following steps:
s100, adjusting the opening of an adjusting valve through a control terminal, respectively acquiring an arrival signal and a departure signal of a transmission bottle through a speed photoelectric sensor, and calculating a real-time transmission speed according to the time difference of the arrival signal and the departure signal;
s200, the control terminal compares the real-time transmission speed with a set transmission speed to correct the opening of the regulating valve;
and S300, repeating S100 to S200 until the real-time transmission speed is consistent with the set transmission speed, and the pressure in the system reaches the set pressure corresponding to the set transmission speed.
In addition, the invention also provides a transmission control method of the pneumatic transmission system, when the transmission bottles are transmitted among different workstations in the same vertical pipeline, the opening degree of the regulating valve is regulated, when the pressure in the system reaches the set pressure corresponding to the set transmission speed, the regulating valve keeps the opening degree unchanged, and the transmission bottles are directly transmitted to the target workstation in the vertical pipeline at the set transmission speed.
Further, when the transmission bottles are transmitted from top to bottom in the same vertical pipeline, the fan is in an out-of-operation state, the transmission bottles fall in the vertical pipeline by self gravity from an originating workstation, when the transmission bottles pass through a target workstation, a photoelectric switch in the target workstation detects that the transmission bottles pass through, the regulating valve is opened, the three-way valve is switched to a blowing mode, the fan is in an operating state, the regulating valve is gradually closed, the pressure and the flow in the system are gradually increased, the transmission bottles are gradually stopped and reversely accelerated, after the pressure sensor detects that the pressure in the system reaches a set pressure corresponding to a set transmission speed, the regulating valve keeps the opening degree unchanged, and the transmission bottles are transmitted to the target workstation at the set transmission speed.
Further, when the transmission bottles are transmitted from bottom to top in the same vertical pipeline, the fan is in a non-operating state, the transmission bottles fall in the vertical pipeline by the aid of self gravity from an originating workstation, when a photoelectric switch in the originating workstation detects that the transmission bottles pass through, the regulating valve is opened, the three-way valve is switched to a blowing mode, the fan is in an operating state, the regulating valve is gradually closed, pressure and flow in the system are gradually increased, the transmission bottles are gradually stopped and reversely accelerated, after the pressure sensor detects that the pressure in the system reaches a set pressure corresponding to a set transmission speed, the regulating valve keeps the opening degree unchanged, and the transmission bottles are transmitted to a target workstation at the set transmission speed.
In addition, the invention also provides a transmission control method of the pneumatic transmission system, when the transmission bottles are transmitted among different workstations of different vertical pipelines, the transmission bottles reach the vertical pipeline and the sub-horizontal pipeline which are communicated with the originating workstation through the originating workstation, enter the speed reducer through the commutator, are reversed through the commutator again, and then reach the target workstation through the sub-horizontal pipeline and the vertical pipeline which are communicated with the target workstation.
Further, the fan is in an out-of-operation state, the transmission bottle falls in the vertical pipeline by self gravity from the starting workstation, when a photoelectric switch in the starting workstation detects that the transmission bottle passes through, the regulating valve is opened, the three-way valve is switched to an air suction mode, the fan is in an operating state, the regulating valve is gradually closed, the transmission bottle gradually accelerates to move to the commutator under the action of negative pressure, when the transmission bottle passes through the position photoelectric sensor, the opening degree of the regulating valve gradually increases, the negative pressure value in the system gradually decreases, the transmission bottle starts to decelerate, firstly enters the speed reducer through the commutator and stops moving, the commutator switches the transmission direction, the three-way valve is switched to an air blowing mode, the regulating valve is gradually closed, the pressure in the system gradually increases, the transmission bottle gradually accelerates until the set transmission speed is reached, and the transmission bottle is transmitted to the target workstation.
Further, when the transmission bottle passes through the commutator for the first time, a photoelectric switch in the commutator sends out a signal, and the three-way valve is switched to an idle-load mode.
The invention has the beneficial effects that:
1. the system can preset a plurality of different set transmission speeds to adapt to different transmission requirements.
2. The transmission bottle accelerates or decelerates gradually when transmitting, and is gentle without impact, thereby avoiding adverse effects on blood and other samples sensitive to vibration, and ensuring the accuracy of detection results.
3. A plurality of speed photoelectric sensors for detecting the real-time transmission speed are arranged on the main horizontal pipeline, speed signals are fed back to the control terminal, the opening of the regulating valve is adjusted through the control terminal, the real-time transmission speed is corrected, and the real-time transmission speed is guaranteed to be consistent with the set transmission speed.
4. The pneumatic conveying system solves the problems of pressure loss and conveying speed reduction caused by factors such as conveying distance, the number of pipe elbows and the like in the conventional pneumatic conveying system.
5. Automatic and intelligent switching operation is realized through the control terminal, and the working efficiency is obviously improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a pneumatic conveying system.
In the drawings: 1-a fan, 2-a three-way valve, 3-a speed reducer, 4-a regulating valve, 5-a pressure sensor, 6-a commutator, 7-a position photoelectric sensor, 8-a speed photoelectric sensor, 9-a recoverer, 10-a first sub-horizontal pipeline, 11-a workstation, 12-a first vertical pipeline, 13-a second vertical pipeline, 14-a second sub-horizontal pipeline and 15-a main horizontal pipeline.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1, a pneumatic transmission system comprises a fan 1, a vertical pipeline, a main horizontal pipeline 15 and a sub horizontal pipeline, wherein the main horizontal pipeline 15 and the sub horizontal pipeline are both arranged along the horizontal direction, workstations 11 located on different floors in the same building are sequentially communicated through the vertical pipeline, and the bottom of the vertical pipeline is communicated with the sub horizontal pipeline.
The air blower 1 is located on a main horizontal pipeline 15, specifically, the air blower 1 is communicated with the main horizontal pipeline 15 through a three-way valve 2, the three-way valve 2 can be switched to an air blowing mode, an air suction mode and an idle load mode, the air blower 1 blows air into the system in the air blowing mode, the air blower 1 sucks air into the system in the air suction mode, and the air blower 1 neither blows air into the system nor sucks air into the system in the idle load mode.
Meanwhile, the main horizontal pipeline 15 is provided with a regulating valve 4 and a pressure sensor 5. The pneumatic transmission system is powered by high-pressure air, and when the pressure is fixed, the flow rate is higher, and the speed is higher. The fan 1 outputs fixed power, the opening of the regulating valve 4 is regulated to enable high-pressure air to overflow, the flow in a system pipeline is correspondingly regulated, and finally the speed of the high-pressure air driving the transmission bottle is changed. In fact, the opening of the regulating valve 4 not only affects the flow rate, but also changes the pressure, and in addition, the high-pressure air has the characteristic of easy compression, so the opening of the regulating valve 4 is not in a linear relation with the transmission speed, and needs to be input to the control terminal after actual measurement and calibration as a control basis.
The vertical pipeline is provided with at least 1, and the vertical pipeline and the sub-horizontal pipeline are arranged in a one-to-one manner, namely, the pneumatic transmission system can cover a plurality of buildings. The sub-horizontal pipeline is communicated with a main horizontal pipeline 15 through a commutator 6, and a speed reducer 3 is arranged on the main horizontal pipeline 15 and between the fan 1 and the commutator 6.
And a position photoelectric sensor 7 and a plurality of speed photoelectric sensors 8 are arranged on the sub-horizontal pipeline, and the plurality of speed photoelectric sensors 8 are arranged at intervals along the sub-horizontal pipeline. The position photosensor 7 is located between the commutator 6 and the speed photosensor 8. And the three-way valve 2, the pressure sensor 5, the position photoelectric sensor 7, the speed photoelectric sensor 8 and the regulating valve 4 are all in communication connection with a control terminal. Meanwhile, photoelectric switches in communication connection with the control terminal are arranged in the commutator 6 and the workstation 11. In addition, the commutator 6 is also communicated with the recoverer 9 through a pipeline, and when a transmission bottle transmission error occurs in the system operation process, the system can send the transmission bottle to the recoverer 9 for independent processing.
In this embodiment, the vertical pipelines include a first vertical pipeline 12 and a second vertical pipeline 13, the first vertical pipeline 12 and the second vertical pipeline 13 are respectively used for communicating with the workstation 11 in 2 buildings, and the sub-horizontal pipelines include a first sub-horizontal pipeline 10 and a second sub-horizontal pipeline 14, wherein the bottom of the first vertical pipeline 12 is communicated with the first sub-horizontal pipeline 10, and the bottom of the second vertical pipeline 13 is communicated with the second sub-horizontal pipeline 14.
Example two:
as shown in fig. 1, the same parts of this embodiment as those of the first embodiment are not described again, except that: a method of speed control for a pneumatic conveying system, comprising the steps of:
s100, in order to realize a certain set transmission speed, the control terminal gives a control signal to the electric actuator of the regulating valve 4 according to a pre-calibrated numerical value, adjusts the opening degree of the regulating valve 4, respectively collects an arrival signal and a departure signal of a transmission bottle through the speed photoelectric sensor 8, and calculates the real-time transmission speed according to the time difference of the arrival signal and the departure signal.
And S200, the control terminal compares the real-time transmission speed with the set transmission speed to correct the opening degree of the regulating valve 4, specifically, when the real-time transmission speed is lower than the set transmission speed, the opening degree of the regulating valve 4 is increased, otherwise, the opening degree of the regulating valve 4 is decreased.
And S300, repeating S100 to S200 until the real-time transmission speed is consistent with the set transmission speed, and the pressure in the system reaches the set pressure corresponding to the set transmission speed. In practical application, the different numbers of pipeline elbows cause high-pressure air pressure loss and gas leakage between the transmission bottle and the pipeline, and accurate control cannot be realized, so that the speed error is allowed to be within a range of +/-5%.
Through set up a plurality of speed photoelectric sensor 8 that detect real-time transmission speed on main horizontal pipeline 15, and feed back speed signal to control terminal, adjust the aperture of governing valve 4 through control terminal, in order to revise real-time transmission speed, guarantee that real-time transmission speed accords with the transmission speed of settlement, the pressure loss that has solved among the current pneumatic transmission system because of factors such as transmission distance, pipeline elbow quantity causes and the problem that transmission speed descends, and simultaneously, the system can predetermine a plurality of different transmission speeds of settlement, in order to adapt to different transmission requirements, can adopt higher speed like the document class, in order to raise the efficiency. The specimen class is adopted at a lower speed so as to ensure the transmission quality. In addition, automatic and intelligent switching operation is realized through the control terminal, and the working efficiency is obviously improved.
Example three:
as shown in fig. 1, the same parts of this embodiment as those of the first and second embodiments are not repeated, except that:
when the transmission bottles are transmitted between different workstations 11 in the same vertical pipeline, the opening degree of the regulating valve 4 is adjusted, after the pressure in the system reaches the set pressure corresponding to the set transmission speed, the opening degree of the regulating valve 4 is kept unchanged, and the transmission bottles are directly transmitted to the target workstation in the vertical pipeline at the set transmission speed.
When the transmission bottles are transmitted from top to bottom on the same vertical pipeline, the fan 1 is in an out-of-operation state, the transmission bottles fall in the vertical pipeline by self gravity from an originating workstation, and because the fan 1 is not started and the pipeline is sealed, air in the pipeline can only flow out from a gap between the transmission bottles and the pipeline, therefore, the transmission bottles can fall at a constant speed without being greatly approached. When a transmission bottle passes through the target workstation, a photoelectric switch in the target workstation detects that the transmission bottle passes through, the regulating valve 4 is opened, the three-way valve 2 is switched to a blowing mode, the fan 1 is in a working state, the regulating valve 4 is gradually closed, the pressure and the flow in the system are gradually increased, the transmission bottle is gradually stopped and reversely accelerated, the regulating valve 4 keeps the opening unchanged after the pressure sensor 5 detects that the pressure in the system reaches the set pressure corresponding to the set transmission speed, and the transmission bottle is transmitted to the target workstation at the set transmission speed.
When a transmission bottle is transmitted from bottom to top in the same vertical pipeline, the fan 1 is in a non-operating state, the transmission bottle falls in the vertical pipeline by the gravity of the transmission bottle from an originating workstation, when a photoelectric switch in the originating workstation detects that the transmission bottle passes through, the regulating valve 4 is opened, the three-way valve 2 is switched to a blowing mode, the fan 1 is in an operating state, the regulating valve 4 is gradually closed, the pressure and the flow in the system are gradually increased, the transmission bottle is gradually stopped and reversely accelerated, after the pressure sensor 5 detects that the pressure in the system reaches a set pressure corresponding to a set transmission speed, the regulating valve 4 keeps the opening degree unchanged, and the transmission bottle is transmitted to a target workstation at the set transmission speed.
That is to say, the transmission bottle accelerates gradually or decelerates when the transmission, and is gentle, does not have the impact, avoids producing adverse effect to blood etc. to the sensitive sample of vibrations, guarantees the degree of accuracy of testing result.
Example four:
as shown in fig. 1, the same parts of this embodiment as those of the first and second embodiments are not repeated, except that:
when the transmission bottles are transmitted among different workstations 11 of different vertical pipelines, the transmission bottles reach a vertical pipeline and a sub-horizontal pipeline which are communicated with the originating workstation through the originating workstation, enter the speed reducer 3 through the commutator 6, change the direction through the commutator 6 again, and then reach a target workstation through the sub-horizontal pipeline and the vertical pipeline which are communicated with the target workstation, wherein the commutator 6 is mature prior art, and reference can be made to a built-in rotary valve type steering gear system and a pneumatic pipeline intelligent system formed by the built-in rotary valve type steering gear system.
Specifically, the fan 1 is in a non-operating state, the transmission bottle falls in the vertical pipeline by self gravity from an originating workstation, when a photoelectric switch in the originating workstation detects that the transmission bottle passes through, the regulating valve 4 is opened, the three-way valve 2 is switched to an air suction mode, the fan 1 is in an operating state, the regulating valve 4 is gradually closed, no matter before the transmission bottle stops under the action of friction force in the sub-horizontal pipeline or gradually decelerates transmission under the action of inertia, the transmission bottle gradually accelerates to move to the commutator 6 under the action of negative pressure, when the transmission bottle passes through the position photoelectric sensor 7, the opening degree of the regulating valve 4 is gradually increased, the negative pressure value in the system is gradually reduced, the transmission bottle starts to decelerate and firstly enters the speed reducer 3 through the commutator 6 and stops moving, and simultaneously, when the transmission bottle firstly passes through the commutator 6, the photoelectric switch in the commutator 6 sends a signal, the three-way valve 2 is switched to the unloaded mode.
After the transmission bottle stops moving in the speed reducer 3, the commutator 6 switches the transmission direction, the three-way valve 2 is switched to the blowing mode, the regulating valve 4 is gradually closed, the pressure in the system is gradually increased, the transmission bottle is gradually accelerated, the real-time transmission speed is adjusted according to the signal of the speed photoelectric sensor 8 in the transmission process until the set transmission speed is reached, and the transmission bottle is transmitted to the target workstation.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (10)
1. The utility model provides a pneumatic transmission system, its characterized in that, includes fan, vertical pipeline, main horizontal pipeline and sub-horizontal pipeline, the fan is located main horizontal pipeline, and is equipped with the governing valve on the main horizontal pipeline, and the workstation that is located different floors in same building communicates through vertical pipeline in proper order, and the bottom and the sub-horizontal pipeline intercommunication of vertical pipeline, vertical pipeline is equipped with 1 at least, and vertical pipeline and sub-horizontal pipeline one to one setting, sub-horizontal pipeline passes through commutator and main horizontal pipeline intercommunication, main horizontal pipeline is gone up and is located and is equipped with the reduction gear between fan and the commutator.
2. A pneumatic conveying system as claimed in claim 1, wherein the sub-horizontal lines are provided with position photosensors and a plurality of velocity photosensors, the plurality of velocity photosensors being spaced along the sub-horizontal lines.
3. A pneumatic conveying system as claimed in claim 2, wherein the blower is in communication with the main horizontal duct via a three-way valve which is switchable between a blowing mode in which the blower blows air into the system, an aspirating mode in which the blower aspirates air into the system, and an unloaded mode in which the blower neither blows air into the system nor aspirates air into the system.
4. A pneumatic conveying system according to claim 3, wherein the three-way valve, the pressure sensor, the position photosensor, the speed photosensor and the regulating valve are all in communication with a control terminal.
5. A method of controlling the speed of a pneumatic conveying system, comprising the steps of:
s100, adjusting the opening of an adjusting valve through a control terminal, respectively acquiring an arrival signal and a departure signal of a transmission bottle through a speed photoelectric sensor, and calculating a real-time transmission speed according to a time difference between the arrival signal and the departure signal;
s200, the control terminal compares the real-time transmission speed with a set transmission speed to correct the opening of the regulating valve;
s300, repeating S100 to S200 until the real-time transmission speed is consistent with the set transmission speed, and the pressure in the system reaches the set pressure corresponding to the set transmission speed.
6. A transmission control method of a pneumatic transmission system is characterized in that when transmission bottles are transmitted among different workstations of the same vertical pipeline, the opening degree of an adjusting valve is adjusted, when the pressure in the system reaches a set pressure corresponding to a set transmission speed, the opening degree of the adjusting valve is kept unchanged, and the transmission bottles are directly transmitted to a target workstation in the vertical pipeline at the set transmission speed.
7. The transmission control method of the pneumatic transmission system according to claim 6, wherein when the transmission bottle is transmitted from top to bottom in the same vertical pipeline, the blower is in a non-operating state, the transmission bottle falls down in the vertical pipeline by its own weight from the originating workstation, when the transmission bottle passes through the destination workstation, the photoelectric switch in the destination workstation detects the passing of the transmission bottle, the regulating valve is opened, the three-way valve is switched to a blowing mode, the blower is in an operating state, the regulating valve is gradually closed, the pressure and flow in the system gradually rise, the transmission bottle is gradually stopped and reversely accelerated, the regulating valve keeps the opening degree unchanged after the pressure sensor detects that the pressure in the system reaches the set pressure corresponding to the set transmission speed, and the transmission bottle is transmitted to the destination workstation at the set transmission speed.
8. The transmission control method of the pneumatic transmission system according to claim 6, wherein when the transmission bottle is transmitted from bottom to top in the same vertical pipeline, the blower is in a non-operating state, the transmission bottle falls in the vertical pipeline from the originating workstation by its own gravity, when the photoelectric switch in the originating workstation detects the transmission bottle passing, the regulating valve is opened, the three-way valve is switched to a blowing mode, the blower is in an operating state, the regulating valve is gradually closed, the pressure and flow in the system gradually increase, the transmission bottle gradually stops and reversely accelerates, the regulating valve keeps the opening degree unchanged after the pressure sensor detects that the pressure in the system reaches the set pressure corresponding to the set transmission speed, and the transmission bottle is transmitted to the target workstation at the set transmission speed.
9. A transmission control method of a pneumatic transmission system is characterized in that when transmission bottles are transmitted among different workstations of different vertical pipelines, the transmission bottles reach a vertical pipeline and a sub-horizontal pipeline which are communicated with an originating workstation through the originating workstation, enter a speed reducer through a commutator, are reversed through the commutator again, and then reach a target workstation through the sub-horizontal pipeline and the vertical pipeline which are communicated with the target workstation.
10. The transmission control method of the pneumatic transmission system according to claim 9, wherein the blower is in an inoperative state, the transmission bottle falls down in the vertical pipeline from the originating workstation by its own weight, when the photoelectric switch inside the originating workstation detects the passage of the transmission bottle, the regulating valve is opened, the three-way valve is switched to an air suction mode, the blower is in an operative state, the regulating valve is gradually closed, the transmission bottle gradually accelerates to move to the reverser under the action of negative pressure, when the transmission bottle passes through the position photoelectric sensor, the opening degree of the regulating valve gradually increases, the negative pressure value in the system gradually decreases, the transmission bottle starts to decelerate, firstly enters the reducer through the reverser and stops moving, when the transmission bottle firstly passes through the reverser, the photoelectric switch inside the reverser sends a signal, and the three-way valve is switched to an idle mode;
the commutator switches the transmission direction, the three-way valve switches to the blowing mode, the regulating valve is gradually closed, the pressure in the system is gradually increased, the transmission bottle is gradually accelerated until the set transmission speed is reached, and the transmission bottle is transmitted to the target workstation.
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| CN202210167263.6A CN114476684B (en) | 2022-02-23 | 2022-02-23 | Pneumatic transmission system, speed control method and transmission control method |
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| CN202210167263.6A CN114476684B (en) | 2022-02-23 | 2022-02-23 | Pneumatic transmission system, speed control method and transmission control method |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1122856A (en) * | 1965-03-22 | 1968-08-07 | Int Standard Electric Corp | Arrangement for braking of dispatch carriers in pneumatic tube conveying systems |
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2022
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| GB1122856A (en) * | 1965-03-22 | 1968-08-07 | Int Standard Electric Corp | Arrangement for braking of dispatch carriers in pneumatic tube conveying systems |
| EP0019653A1 (en) * | 1979-05-18 | 1980-12-10 | Siemens-Albis Aktiengesellschaft | Pneumatic dispatch system with controllable driving air supply |
| US5738467A (en) * | 1993-02-01 | 1998-04-14 | Aidlin; Samuel S. | Apparatus for the feeding of articles at variable speeds |
| JPH09142655A (en) * | 1995-11-20 | 1997-06-03 | Nkk Corp | Combination air drive and linear motor drive type capsule transport method and device thereof |
| JPH09328226A (en) * | 1996-06-11 | 1997-12-22 | Hokkai Can Co Ltd | Air supply adjusting device in can pneumatic conveyer |
| JPH10265042A (en) * | 1997-03-24 | 1998-10-06 | Mitsubishi Heavy Ind Ltd | Transmission in pneumatic feed equipment |
| US6000884A (en) * | 1997-03-27 | 1999-12-14 | Advanced Manufacturing Technology | Apparatus for controlling flow in air conveyor systems |
| CN2343128Y (en) * | 1998-08-07 | 1999-10-13 | 宝山钢铁(集团)公司 | Positive pressure sample-feeding dynamic speed reducer |
| WO2000024654A1 (en) * | 1998-10-23 | 2000-05-04 | Netra Systems | Air-conveying apparatus with automatically adjusted transporting air stream |
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|---|---|
| CN114476684B (en) | 2024-04-12 |
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