CN217443785U

CN217443785U - Pneumatic transmission simulation test control system

Info

Publication number: CN217443785U
Application number: CN202221602956.5U
Authority: CN
Inventors: 朱望孟; 朱汉奇; 马莉; 马云; 赵坤; 李大坤; 马荣胜; 张群
Original assignee: Shandong Chuangxing Auxiliary Power Equipment Co ltd
Current assignee: Shandong Chuangxing Auxiliary Power Equipment Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-16
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a pneumatic conveying simulation test control system, which comprises a compressed air source, a main air pipe, an ash conveying pipeline, an ash storehouse and a storehouse pump, wherein the air outlet of the compressed air source is communicated with the main air supply port of the storehouse pump through the main air pipe; the automatic dredging device is characterized by further comprising a pressure detection module, a main control module, a time control module and an automatic dredging assembly. Through setting up the PLC controller, time control module and cooperation install the solenoid valve on each pipeline, when the defeated ash of actual simulation, realize opening and close of each pipeline of automatic control, be convenient for control, through setting up automatic mediation subassembly, when pipeline local jam appears, the mode that automatic mediation subassembly can carry out the air current to the jam department and blow and loose inter combination of machinery is to the jam department mediation, improves the effect of mediation jam to be favorable to the long-term stable work of system.

Description

Pneumatic transmission simulation test control system

Technical Field

The utility model relates to a pneumatic conveying control technical field. In particular to a pneumatic transmission simulation test control system.

Background

The pneumatic conveying means that the material is pushed to move forward in the pipeline by utilizing the force of air flow so as to achieve the purpose of conveying the material, when the pneumatic conveying is simulated, all valves need to be controlled, manual control is inconvenient to carry out, and when the ash is conveyed in a simulated mode, the pipeline needs to be stopped and cleaned after being blocked, so that the waste of time, manpower and material resources is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that a pneumatic conveying simulation test control system that carries out automatic control and can clear up the jam automatically is provided.

In order to solve the technical problem, the utility model provides a following technical scheme: a pneumatic conveying simulation test control system comprises a compressed air source, a main air conveying pipe, an ash conveying pipeline, an ash storage and a bin pump, wherein an air outlet of the compressed air source is in fluid communication with a main air supply port of the bin pump through the main air conveying pipe, and an ash conveying port of the bin pump is communicated with the bin pump through the ash conveying pipeline; the automatic dust removing device is characterized by further comprising a pressure detection module, a main control module, a time control module and an automatic dredging component, wherein the detection end of the pressure detection module is respectively arranged on a main gas pipe, an ash conveying pipeline and a bin pump, the automatic dredging component is arranged on the ash conveying pipeline, a fourth electromagnetic valve is arranged on a feed inlet of the bin pump, a third electromagnetic valve is arranged on an auxiliary gas inlet of the bin pump, the auxiliary gas inlet of the bin pump is communicated with compressed gas source fluid, a first electromagnetic valve is arranged on a main gas supply port of the bin pump, a second electromagnetic valve is arranged on an ash conveying port of the bin pump, the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are respectively in communication connection with the time control module, and the pressure detection module, the time control module and the automatic dredging component are all in communication connection with the main control module, and the air inlet end of the automatic dredging component is communicated with the compressed air source fluid.

According to the pneumatic transmission simulation test control system, the main control module comprises a control cabinet, a PLC (programmable logic controller) and a direct-current power supply, the PLC and the direct-current power supply are both installed in the control cabinet, and the output end of the direct-current power supply is connected with the power interface of the PLC; and the input end of the second electromagnetic valve is electrically connected with the output end of the PLC.

The pneumatic transmission simulation test control system comprises a time control module, a first time relay, a second time relay, a third time relay and a fourth time relay, wherein the output end of the first time relay is electrically connected with the input end of the first electromagnetic valve, the output end of the second time relay is electrically connected with an alarm lamp, the output end of the third time relay is electrically connected with the input end of the third electromagnetic valve, and the output end of the fourth time relay is electrically connected with the input end of the fourth electromagnetic valve; and the input ends of the first time relay, the second time relay, the third time relay and the fourth time relay are electrically connected with the output end of the PLC.

In the pneumatic transmission simulation test control system, the fourth time relay is of a power-off delay type, and the power-off delay of the fourth time relay is 5-3000 seconds; the second time relay is of an electrified delay type, and the electrification of the second time relay is delayed for 1800 seconds; the third time relay is of a power-off delay type, and the power-off delay of the third time relay is 120-600 seconds.

In the above pneumatic conveying simulation test control system, the pressure detection module includes a first pressure sensor, a second pressure sensor and a third pressure sensor, the first pressure sensor is installed on the main gas pipe, the second pressure sensor is installed on the ash conveying pipe, and the third pressure sensor is installed on the bin pump; and the output ends of the first pressure sensor, the second pressure sensor and the third pressure sensor are electrically connected with the input end of the PLC.

The automatic dredging component comprises a shell, a connecting pipe and a telescopic pipe, wherein the connecting pipe is fixedly connected to the bottom of the shell and communicated with the shell, a piston block is hermetically matched in the connecting pipe, the telescopic pipe is hermetically and slidably matched in the connecting pipe, the top end of the telescopic pipe is fixedly connected with the end part of the piston block, air holes are formed in the bottom end and the side wall of the connecting pipe, a through hole communicated with the shell is formed in the center of the piston block in a penetrating manner, a tension spring is fixedly connected to the inner top wall of the shell, the other end of the tension spring is fixedly connected with the top of the piston block, an air inlet pipe is installed on the side wall of the shell, a fifth electromagnetic valve is installed on the air inlet pipe, and the input end of the fifth electromagnetic valve is electrically connected with the output end of the PLC controller, the air inlet end of the fifth electromagnetic valve is in fluid communication with the air outlet end of the compressed air source; the connecting pipe is fixedly connected to the ash conveying pipeline and communicated with the ash conveying pipeline.

In the pneumatic transmission simulation test control system, the pressure of the compressed air source is 0.3-0.35 MPa.

The technical scheme of the utility model following profitable technological effect has been obtained:

1. through setting up PLC controller, time control module and cooperation installation solenoid valve on each pipeline, when the defeated ash of actual simulation, realize opening and close of each pipeline of automatic control, be convenient for control.

3. Through setting up automatic mediation subassembly, when the pipeline part blocks up appearing, automatic mediation subassembly can carry out the mode that the loose inter combination of air current blows and machinery to the jam department and dredge the jam department, improves the effect of mediation jam to be favorable to the long-term stable work of system.

Drawings

FIG. 1 is a schematic view of a connection structure of the present invention;

fig. 2 is a schematic view of the sectional structure of the automatic dredging assembly of the present invention.

The reference numbers in the figures denote: 1-a compressed gas source; 2-main gas pipe; 3-ash conveying pipeline; 4-ash storehouse; 5-bin pump; 6-a control cabinet; 7-a PLC controller; 8-a first time relay; 9-a second time relay; 10-a third time relay; 11-a fourth time relay; 12-a direct current power supply; 13-a first solenoid valve; 14-a second solenoid valve; 15-a third solenoid valve; 16-a fourth solenoid valve; 17-a first pressure sensor; 18-a second pressure sensor; 19-a third pressure sensor; 20-an automatic dredging component; 21-a housing; 22-connecting tube; 23-a telescopic tube; 24-a piston block; 25-a tension spring; 26-fifth solenoid valve.

Detailed Description

In this embodiment, a pneumatic conveying simulation test control system is shown in fig. 1, and includes a compressed air source 1, a main air pipe 2, an ash conveying pipeline 3, an ash storage 4, and a bin pump 5, wherein an air outlet of the compressed air source 1 is in fluid communication with a main air supply port of the bin pump 5 through the main air pipe 2, an ash conveying port of the bin pump 5 is in communication with the bin pump 5 through the ash conveying pipeline 3, and the pressure of the compressed air source 1 is 0.3-0.35 MPa; the automatic dust removing device is characterized by further comprising a pressure detection module, a main control module, a time control module and an automatic dredging component 20, wherein the detection end of the pressure detection module is respectively installed on a main gas pipe 2, a dust conveying pipeline 3 and a bin pump 5, the automatic dredging component 20 is installed on the dust conveying pipeline 3, a fourth electromagnetic valve 16 is installed on a feed inlet of the bin pump 5, a third electromagnetic valve 15 is installed on an auxiliary gas inlet of the bin pump 5, the auxiliary gas inlet of the bin pump 5 is communicated with a compressed gas source 1, a first electromagnetic valve 13 is installed on a main gas supply port of the bin pump 5, a second electromagnetic valve 14 is installed on a dust conveying port of the bin pump 5, the first electromagnetic valve 13, the third electromagnetic valve 15 and the fourth electromagnetic valve 16 are respectively in communication connection with the time control module, and the pressure detection module, the time control module and the automatic dredging component 20 are all in communication connection with the main control module, the air inlet end of the automatic dredging component 20 is communicated with the fluid of the compressed air source 1, and the PLC 7 and the time control module are arranged and are matched with electromagnetic valves arranged on all pipelines, so that the automatic dredging component can automatically control the opening and closing of all pipelines when actual simulation is performed on ash conveying, and is convenient to control.

The main control module comprises a control cabinet 6, a PLC (programmable logic controller) 7 and a direct-current power supply 12, wherein the PLC 7 and the direct-current power supply 12 are both installed in the control cabinet 6, and the output end of the direct-current power supply 12 is connected with a power supply interface of the PLC 7; the input end of the second electromagnetic valve 14 is electrically connected with the output end of the PLC controller 7.

The time control module comprises a first time relay 8, a second time relay 9, a third time relay 10 and a fourth time relay 11, wherein the output end of the first time relay 8 is electrically connected with the input end of the first electromagnetic valve 13, the output end of the second time relay 9 is electrically connected with an alarm lamp, the output end of the third time relay 10 is electrically connected with the input end of the third electromagnetic valve 15, and the output end of the fourth time relay 11 is electrically connected with the input end of the fourth electromagnetic valve 16; the input ends of the first time relay 8, the second time relay 9, the third time relay 10 and the fourth time relay 11 are all electrically connected with the output end of the PLC 7; the fourth time relay 11 is of a power-off delay type, and the power-off delay of the fourth time relay 11 is 120 seconds; the second time relay 9 is of an electrified delay type, the second time relay 9 is electrified for 1800 seconds, and when the continuous material conveying time exceeds 1800 seconds, an alarm lamp is triggered to prompt a worker to protect the ash conveying system; the third time relay 10 is of a power-off delay type, and the power-off delay of the third time relay 10 is 120 seconds; the pressure detection module comprises a first pressure sensor 17, a second pressure sensor 18 and a third pressure sensor 19, the first pressure sensor 17 is installed on the main gas transmission pipe 2, the second pressure sensor 18 is installed on the ash transmission pipeline 3, and the third pressure sensor 19 is installed on the bin pump 5; the output ends of the first pressure sensor 17, the second pressure sensor 18 and the third pressure sensor 19 are all electrically connected with the input end of the PLC controller 7.

As shown in fig. 2, the automatic dredging assembly 20 includes a housing 21, a connecting pipe 22 and a telescopic pipe 23, the connecting pipe 22 is fixedly connected to the bottom of the housing 21 and is communicated with the housing 21, a piston block 24 is hermetically fitted in the connecting pipe 22, the telescopic pipe 23 is hermetically and slidably fitted in the connecting pipe 22, the top end of the telescopic pipe 23 is fixedly connected with the end of the piston block 24, air holes are respectively formed in the bottom end and the side wall of the connecting pipe 22, a through hole communicated with the housing 21 is formed in the center of the piston block 24 in a penetrating manner, a tension spring 25 is fixedly connected to the inner top wall of the housing 21, the other end of the tension spring 25 is fixedly connected with the top of the piston block 24, an air inlet pipe is installed on the side wall of the housing 21, a fifth electromagnetic valve 26 is installed on the air inlet pipe, and the input end of the fifth electromagnetic valve 26 is electrically connected with the output end of the PLC controller 7, the air inlet end of the fifth electromagnetic valve 26 is in fluid communication with the air outlet end of the compressed air source 1; connecting pipe 22 fixed connection in on the ash conveying pipeline 3 and with ash conveying pipeline 3 intercommunication, through setting up automatic mediation subassembly 20, when the pipeline local jam appears, automatic mediation subassembly 20 can carry out the mode that the loose inter combination of air current blows and machinery to the jam department and dredge the jam department, improves the effect of mediation jam to be favorable to the long-term stable work of system.

The working principle is as follows: a corresponding program is set in the PLC 7 for automatic control, the PLC 7 outputs voltage to a third time relay 10 and controls a third electromagnetic valve 15 to be opened, the third electromagnetic valve 15 is closed after being delayed for 120 seconds, and when the pressure in the bin pump 5 reaches a lower limit value, the third electromagnetic valve 15 is closed;

after 60 seconds, the PLC 7 outputs voltage to a fourth time relay 11 and controls a fourth electromagnetic valve 16 to be opened, powder falls into the bin pump 5 through the opened fourth electromagnetic valve 16, meanwhile, the PLC 7 outputs voltage to a first time relay 8 to control a first electromagnetic valve 13 to be opened, the PLC 7 outputs voltage to control a second electromagnetic valve 14 to be opened, ash conveying operation is carried out, the fourth time relay 11 and the third time relay 10 are both closed in a time-delay mode for 120 seconds, and ash conveying is carried out through the bin pump 5 by using compressed air; after the timing is finished, the fourth electromagnetic valve 16, the first electromagnetic valve 13 and the second electromagnetic valve 14 are closed;

after the first conveying is finished, delaying for 60 seconds, carrying out pressure relief protection, outputting voltage to the fourth time relay 11, the third time relay 10 and the second electromagnetic valve 14 again, and carrying out material conveying in a circulating manner; when blockage occurs, the second pressure sensor 18 on the ash conveying pipeline 3 detects pressure rise and feeds back a signal to the PLC controller 7, the PLC controller 7 controls the fifth electromagnetic valve 26 to be opened, compressed air enters the shell 21 and is introduced into the extension pipe 23, the compressed air is firstly sprayed out through the air holes at the end part of the extension pipe 23, due to the small number of the air holes, the compressed air is sprayed out at higher pressure and flow rate to purge the blockage, meanwhile, under the action of air pressure, the piston block 24 and the extension pipe 23 are pushed to extend outwards, namely, extend into the ash conveying pipeline 3, contact with the blockage part and purge the blockage at the same time of extruding the blockage, the dredging effect is improved, along with the continuous extension of the extension pipe 23, the thickness of the blockage is reduced, the air holes on the side surface of the extension pipe 23 are exposed, the air flow passing area is increased, the high-pressure purging is changed into high-flow-rate purging, and the flow rate in the ash conveying pipeline 3 is improved, the conveying effect is improved, and after the fifth electromagnetic valve 26 is closed, the piston block 24 and the telescopic pipe 23 are pulled to reset by the tension spring 25.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims

1. A pneumatic conveying simulation test control system is characterized by comprising a compressed air source (1), a main air conveying pipe (2), an ash conveying pipeline (3), an ash storage (4) and a bin pump (5), wherein an air outlet of the compressed air source (1) is in fluid communication with a main air supply port of the bin pump (5) through the main air conveying pipe (2), and an ash conveying port of the bin pump (5) is communicated with the bin pump (5) through the ash conveying pipeline (3); the automatic dust removal device is characterized by further comprising a pressure detection module, a main control module, a time control module and an automatic dredging component (20), wherein the detection end of the pressure detection module is respectively installed on a main gas pipe (2), a dust conveying pipeline (3) and a bin pump (5), the automatic dredging component (20) is installed on the dust conveying pipeline (3), a fourth electromagnetic valve (16) is installed on a feed inlet of the bin pump (5), a third electromagnetic valve (15) is installed on an auxiliary gas inlet of the bin pump (5), the auxiliary gas inlet of the bin pump (5) is communicated with fluid of the compressed gas source (1), a first electromagnetic valve (13) is installed on a main gas supply port of the bin pump (5), a second electromagnetic valve (14) is installed on a dust conveying port of the bin pump (5), and the first electromagnetic valve (13), the third electromagnetic valve (15) and the fourth electromagnetic valve (16) are respectively in communication connection with the time control module, the pressure detection module, the time control module and the automatic dredging component (20) are in communication connection with the main control module, and the air inlet end of the automatic dredging component (20) is communicated with the fluid of the compressed air source (1).

2. The pneumatic conveying simulation test control system according to claim 1, wherein the main control module comprises a control cabinet (6), a PLC (7) and a DC power supply (12), the PLC (7) and the DC power supply (12) are both installed in the control cabinet (6), and the output end of the DC power supply (12) is connected with a power interface of the PLC (7); the input end of the second electromagnetic valve (14) is electrically connected with the output end of the PLC (7).

3. The pneumatic conveying simulation test control system according to claim 2, wherein the time control module comprises a first time relay (8), a second time relay (9), a third time relay (10) and a fourth time relay (11), an output end of the first time relay (8) is electrically connected with an input end of the first electromagnetic valve (13), an output end of the second time relay (9) is electrically connected with an alarm lamp, an output end of the third time relay (10) is electrically connected with an input end of the third electromagnetic valve (15), and an output end of the fourth time relay (11) is electrically connected with an input end of the fourth electromagnetic valve (16); the input ends of the first time relay (8), the second time relay (9), the third time relay (10) and the fourth time relay (11) are electrically connected with the output end of the PLC (7).

4. The pneumatic conveying simulation test control system according to claim 3, wherein the fourth time relay (11) is of a power-off delay type, and the power-off delay of the fourth time relay (11) is 5-3000 seconds; the second time relay (9) is of an electrified delay type, and the electrification of the second time relay (9) is delayed for 1800 seconds; the third time relay (10) is of a power-off delay type, and the power-off delay of the third time relay (10) is 120-600 seconds.

5. The pneumatic conveying simulation test control system according to claim 3, wherein the pressure detection module comprises a first pressure sensor (17), a second pressure sensor (18) and a third pressure sensor (19), the first pressure sensor (17) is installed on the main gas pipe (2), the second pressure sensor (18) is installed on the ash conveying pipeline (3), and the third pressure sensor (19) is installed on the bin pump (5); the output ends of the first pressure sensor (17), the second pressure sensor (18) and the third pressure sensor (19) are electrically connected with the input end of the PLC (7).

6. The pneumatic conveying simulation test control system according to claim 2, wherein the automatic dredging assembly (20) comprises a housing (21), a connecting pipe (22) and a telescopic pipe (23), the connecting pipe (22) is fixedly connected to the bottom of the housing (21) and communicated with the housing (21), a piston block (24) is hermetically matched in the connecting pipe (22), the telescopic pipe (23) is hermetically and slidably matched in the connecting pipe (22), the top end of the telescopic pipe (23) is fixedly connected with the end part of the piston block (24), air holes are formed in the bottom end and the side wall of the connecting pipe (22), a through hole communicated with the housing (21) is formed in the center of the piston block (24) in a penetrating manner, a tension spring (25) is fixedly connected to the inner part of the housing (21), and the other end of the tension spring (25) is fixedly connected with the top of the piston block (24), an air inlet pipe is installed on the side wall of the shell (21), a fifth electromagnetic valve (26) is installed on the air inlet pipe, the input end of the fifth electromagnetic valve (26) is electrically connected with the output end of the PLC (7), and the air inlet end of the fifth electromagnetic valve (26) is in fluid communication with the air outlet end of the compressed air source (1); the connecting pipe (22) is fixedly connected to the ash conveying pipeline (3) and communicated with the ash conveying pipeline (3).

7. The pneumatic conveying simulation test control system according to claim 1, wherein the pressure of the compressed air source (1) is 0.3-0.35 MPa.