CN209834867U - Sealing-tape machine protection system - Google Patents
Sealing-tape machine protection system Download PDFInfo
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- CN209834867U CN209834867U CN201920508539.6U CN201920508539U CN209834867U CN 209834867 U CN209834867 U CN 209834867U CN 201920508539 U CN201920508539 U CN 201920508539U CN 209834867 U CN209834867 U CN 209834867U
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Abstract
The utility model discloses a sealing-tape machine protection system, including temperature protection device, smog protection device, host computer PLC and watering device, watering device includes electric ball valve, water inlet and delivery port, smog protection device is connected with electric ball valve and host computer PLC, the sealing-tape machine includes driving drum, driving drum comprises a plurality of cylinder winding sticky tapes, temperature protection device sets up in one side of one of them cylinder, one side of one of them cylinder faces a delivery port of watering device, one side of the cylinder adjacent to one of them cylinder faces another delivery port of watering device; the utility model has the advantages of avoid the malfunction and do not move the security threat that the equipment heavy load starts to cause, make sealing-tape machine safe operation.
Description
Technical Field
The utility model relates to a colliery safety in production field, more specifically relates to sealing-tape machine protection system.
Background
According to the third hundred and seventy-four provisions of the coal mine safety regulation of the new edition: when the roller-driven belt conveyor is used for transportation, protective devices for preventing slipping, deviation, coal piling, tearing and the like must be arranged. Belt conveyors used in primary haulage roadways must be equipped with tension limit protection devices. If the goods load is over limit, the tension is not enough, the unloading is blocked, and the like, the running resistance is larger than the friction driving force between the driving roller and the adhesive tape, the phenomenon that the adhesive tape rotates and slips when the roller rotates is generated, and the adhesive tape is ignited due to the fact that the adhesive tape is tightly attached to the roller and the slipping time is long. The anti-skid protection, the coal piling protection, the deviation prevention protection and the tension limit protection are arranged on the driving roller, when the rubber belt slips, the coal piling is unloaded, the rubber belt deviates and the tension is reduced, the rubber belt can automatically stop running, and the friction fire is effectively prevented. And a temperature protection device, a smoke protection device and an automatic water sprinkling device are arranged near the driving roller. The high temperature and smoke generated by the ignition of the adhesive tape can lead the temperature protection device and the smoke protection device to act, automatically open the water spraying valve and automatically spray water to the adhesive tape for fire extinguishing.
The temperature sensor adopted in the existing temperature protection enables a voltage signal to be easily interfered by electromagnetism, data transmission is unstable, misoperation is often caused, and the safe operation of the adhesive tape machine is influenced. The smoke sensor adopted by the existing smoke protection only has one group of switching value output signals, so that a ground monitoring team cannot effectively monitor smoke of the underground belt conveyor lane. The prior art does not have relatively perfect tension limit protection.
The field application practice shows that some protection devices are not suitable, so that the protection effect cannot be achieved, misoperation can be caused, the belt conveyor is started in a heavy load mode, and the safe and reliable operation of equipment is seriously threatened. Therefore, it is necessary to modify the temperature, smoke detection, automatic watering protection and tension lower limit protection.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in prior art's sealing-tape machine protection system's protection device often causes malfunction and protection device imperfect, influences the problem of sealing-tape machine safe operation.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a protection system of a sealing-tape machine comprises a temperature protection device, a smoke protection device, a host PLC and a watering device, the sprinkler comprises an electric ball valve, one water inlet and at least one water outlet, the water inlet is connected with the electric ball valve through a water inlet pipeline, the electric ball valve is connected with the water outlet through a water outlet pipeline, the smoke protection device is connected with the electric ball valve and the host PLC, the temperature protection device is connected with the host PLC and the electric ball valve, the adhesive tape machine comprises a driving roller, the driving roller is formed by winding adhesive tapes on a plurality of rollers, the temperature protection device is arranged on one side of one roller, one side of one roller is right opposite to one water outlet of the water spraying device, one side of the roller adjacent to the one roller is opposite to the other water outlet of the water sprinkling device. The temperature protection device acts when the temperature of the roller is too high, the host machine PLC connected with the temperature protection device controls the automatic stop operation of the adhesive tape machine, and meanwhile, the sprinkling device works to sprinkle water and cool the adhesive tape and the roller, so that the safety of the adhesive tape machine is protected. When the adhesive tape slips to generate smoke, the smoke protection device works, the host machine PLC connected with the smoke protection device controls the adhesive tape machine to automatically stop running, and the sprinkling device sprinkles water to reduce the concentration of toxic and harmful smoke.
Preferably, the temperature protection device comprises a PT100 platinum thermal resistor, a temperature polling instrument and an intermediate relay ZJ, the temperature polling instrument comprises a normally open contact J, a power terminal RA, a power terminal RB, a signal terminal C, a +24V power terminal and a 0V power terminal, the intermediate relay ZJ comprises a normally open contact ZJ1, a normally open contact ZJ2 and a coil ZJ3, the first end, the second end and the third end of the PT100 platinum thermal resistor are respectively connected with the power terminal RA, the power terminal RB and the signal terminal C, the +24V power terminal and the 0V power terminal are respectively connected with two ends of a power supply V1, one end of the normally open contact J is connected with one end of a coil ZJ3 of the intermediate relay ZJ through the power supply V2, and the other end of the coil ZJ3 is connected with the other end of the normally open contact J; the two ends of the normally open contact ZJ1 are connected with the host PLC, one end of the normally open contact ZJ2 is connected with one end of an electric ball valve of the sprinkler through a power supply V3 of the sprinkler, the other end of the normally open contact ZJ2 is connected with the other end of the electric ball valve, and the PT100 platinum thermal resistor is arranged on one side of one roller. The resistance value of the PT100 platinum thermal resistor is 100 ohms at 0 ℃, the resistance value of the PT100 platinum thermal resistor increases approximately at a constant speed along with the temperature rise, and a current signal of 4-20mA is output. And after receiving the signal, the temperature polling instrument compares the signal with a preset value (50 ℃). If once the temperature is higher than the preset value (50 ℃), the patrol inspection instrument immediately gives an alarm to act, a normally open point J is closed, a coil of an intermediate relay ZJ is electrified, a normally open contact ZJ1 and a normally open contact ZJ2 are closed, a host PLC receives signals and controls the automatic stop operation of the adhesive tape machine, and meanwhile, a watering device is electrified to be started to sprinkle water and cool.
Preferably, the power supply V1 and the power supply V2 are both 24V.
Preferably, the temperature patrol instrument further comprises a display screen, and the display screen comprises site display and temperature display.
Preferably, the electric ball valve is a DFH-20-7 mining intrinsic safety type electric ball valve.
Preferably, the smoke protection device comprises a smoke sensor and an intermediate relay ZJ2, the smoke sensor comprises a normally open contact YJ, the intermediate relay ZJ2 comprises a normally open contact ZJ21, a normally open contact ZJ22 and a coil ZJ24, one end of the normally open contact YJ is connected with one end of the coil ZJ24 through a power supply V4, and the other end of the coil ZJ24 is connected with the other end of the normally open contact YJ; and two ends of the normally open contact ZJ21 are connected with the host PLC, and two ends of the normally open contact ZJ22 are connected with the electric ball valve of the sprinkler.
Preferably, the intermediate relay ZJ2 further comprises a normally open contact ZJ23, and both ends of the normally open contact ZJ23 are connected with a main controller of the monitoring substation. The original smoke sensor only has a group of switching value output signals, so that no switching value output signal is connected with the sprinkler and the monitoring substation, and a monitoring team cannot effectively monitor smoke of the underground rubber belt machine lane. Two groups of switching value output signals are expanded by additionally arranging a 24V intermediate relay ZJ 2. Thus, when the smoke sensor acts, the normally open contact YJ is closed, and the coil ZJ24 of the intermediate relay ZJ2 is electrified to work. Normally open contacts ZJ21, ZJ22, ZJ23 are closed, host PLC receives signals and controls the automatic shutdown of the adhesive tape machine, and the watering device waters to reduce smoke concentration and effectively monitors the smoke of the underground adhesive tape machine lane.
Preferably, the protection system of the adhesive tape machine further comprises a lower tension limit protection device, the lower tension limit protection device comprises a tension sports car and a travel switch, the adhesive tape machine further comprises a tension roller, the travel switch comprises a button, a switch box and a normally open contact J1, the button is pressed, the normally open contact J1 is closed, the button is located on the left side face of the switch box, and the normally open contact J1 is integrated in the switch box; the tensioning trolley is characterized in that the tensioning roller is fixedly connected to the tensioning trolley, a steel wire is horizontally and fixedly connected to the position, right side face of the tensioning trolley is opposite to a button of the travel switch, the tensioning trolley is located on a track, a switch box of the travel switch is fixedly connected with a longitudinal beam of the adhesive tape machine, and two ends of the normally open contact J1 are connected with a host PLC. When the adhesive tape machine runs, when the tensioning roller rolls towards the loosening direction due to accidents such as pressure relief of the tensioning oil cylinder and loosening of a tensioning foundation, a steel wire fixedly connected with the tensioning sports car is close to a button of a travel switch until the travel switch acts by pressing the button, a normally open contact J1 is closed, a host PLC receives a signal and controls the adhesive tape machine to automatically stop running, and the expansion of the adhesive tape machine accidents is avoided.
Preferably, the length of the steel wire is less than or equal to the distance between the tensioning sports car and the button of the travel switch.
Compared with the prior art, the utility model has the following advantages:
(1) the PT100 platinum thermal resistor is combined with a temperature polling instrument to realize the overtemperature protection during the slipping between the roller and the adhesive tape, the PT100 platinum thermal resistor has high measurement precision and stable performance, is not influenced by the severe environment on site, outputs a current signal and is slightly influenced by the electromagnetic interference on site. The temperature polling instrument can visually display the temperature data value in real time, has sensitive and reliable action, effectively avoids the safety threat caused by misoperation and immobility to the heavy load starting of equipment, and ensures that the adhesive tape machine safely operates.
(2) Through setting up smog protection device, when the sticky tape takes place to skid and produces smog, can reliably stop the operation of sticky tape machine to trigger the watering device action, realize that automatic watering reduces poisonous and harmful smog, smog protection device is connected with the controller of control substation, and when producing smog, the control substation receives the signal, helps the effective control of control team to sticky tape machine lane smog in the pit.
(3) The sprinkling device uses a DFH-20-7 mining intrinsic safety type electric ball valve, when a temperature protection device or a smoke protection device acts, a 12V power supply intermediate relay coil of the electric ball valve is controlled to be electrified, an electric ball valve mechanism acts, and water is drained from a water outlet to sprinkle the roller and the adhesive tape for cooling.
(4) Through setting up tensile force lower limit protection device, the action is sensitive reliable, stops the expansion of sealing-tape machine accident, and simple structure is practical, and the stroke adjustment is simple, convenient operation.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a protection system of an adhesive tape machine disclosed in an embodiment of the present invention;
fig. 2 is a circuit diagram of a temperature protection device of a protection system of an adhesive tape machine according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a smoke protection device of a protection system of an adhesive tape machine according to an embodiment of the present invention;
fig. 4 is a schematic view of a lower tension limit protection device of a protection system of an adhesive tape machine disclosed in an embodiment of the present invention;
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, a protection system for an adhesive tape machine comprises a temperature protection device 1, a smoke protection device 2, a host PLC and a water spraying device 3, wherein the water spraying device 3 comprises an electric ball valve 301, a water inlet 302 and a water outlet 303, the water inlet 302 has one water outlet 303, the water outlet 303 has at least one water inlet, the water inlet 302 is connected with the electric ball valve 301 through a water inlet pipe, the electric ball valve 301 is connected with the water outlet 303 through a water outlet pipe, the temperature protection device 1 is connected with the host PLC and the electric ball valve 301, the smoke protection device 2 is connected with the electric ball valve 301 and the host PLC, the adhesive tape machine (not shown) comprises a driving roller 4, the driving roller 4 is formed by winding an adhesive tape 6 on a plurality of rollers (not shown), the temperature protection device 1 is arranged on one side of one of the rollers, one side of the one of the rollers faces one water outlet 303 of the water spraying device 3, one side of the roller adjacent to one roller is opposite to the other water outlet 303 of the water spraying device 3, the number of the water outlets 303 can be multiple, and one water outlet 303 is opposite to one roller.
As shown in fig. 2, the temperature protection device 1 includes PT100 platinum thermal resistor 101, a temperature polling device 102 and an intermediate relay ZJ (not shown), the temperature polling device 102 includes a normally open contact J, a power terminal RA, a power terminal RB, a signal terminal C, +24V power terminal and a 0V power terminal, the intermediate relay ZJ includes a normally open contact ZJ1, a normally open contact ZJ2 and a coil ZJ3, the first, second and third ends of PT100 platinum thermal resistor 101 are respectively connected to the power terminal RA, the power terminal RB and the signal terminal C, the +24V power terminal and the 0V power terminal are respectively connected to two ends of a power source V1, one end of the normally open contact J is connected to one end of a coil ZJ3 of the intermediate relay ZJ through the power source V2, and the other end of the coil ZJ3 is connected to the other end of the normally open contact J; the two ends of the normally open contact ZJ1 are connected with the host PLC, one end of the normally open contact ZJ2 is connected with one end of the electric ball valve 301 of the sprinkler through the power supply V3 of the sprinkler, the other end of the normally open contact ZJ2 is connected with the other end of the electric ball valve 301, and the PT100 platinum thermal resistor 101 is arranged on one side of one of the rollers. The power supply V1 is 24V, the power supply V2 is 24V, and the power supply V3 is 12V.
Specifically, the temperature polling device 102 further includes a display screen (not shown), which includes a station display 1021 and a temperature display 1022.
Specifically, the electric ball valve 301 is a DFH-20-7 mining intrinsic safety type electric ball valve.
As shown in fig. 3, the smoke protection device 2 comprises a smoke sensor 201 and an intermediate relay ZJ2 (not shown), the smoke sensor 201 comprises a normally open contact YJ, the intermediate relay ZJ2 comprises a normally open contact ZJ21, a normally open contact ZJ22 and a coil ZJ24, one end of the normally open contact YJ is connected with one end of the coil ZJ24 through a power supply V4, and the other end of the coil ZJ24 is connected with the other end of the normally open contact YJ; two ends of the normally open contact ZJ21 are connected with the host PLC, and two ends of the normally open contact ZJ22 are connected with the electric ball valve 301 of the sprinkler 3.
Specifically, the intermediate relay ZJ2 further comprises a normally open contact ZJ23, and two ends of the normally open contact ZJ23 are connected with the main controller 7 of the monitoring substation.
As shown in fig. 4, the protection system of the tape machine further includes a lower-limit tension protection device, the lower-limit tension protection device includes a tensioning carriage 8 and a travel switch 9, the tape machine (not shown) further includes a tensioning roller 5, the travel switch 9 includes a button 901, a switch box 902, and a normally open contact J1, the button 901 is pressed, the normally open contact J1 is closed, the button 901 is located on the left side of the switch box 902, and the normally open contact J1 is integrated in the switch box 902; the tensioning sports car 8 is fixedly connected with the tensioning roller 5, specifically, a tensioning frame (not shown) is vertically and fixedly connected to the tensioning sports car 8, a screw hole (not shown) is formed in the tensioning frame, a bearing (not shown) of the tensioning roller 5 is fixed to a bearing seat (not shown), the bearing seat is fixed to the tensioning frame by a screw (not shown) perpendicular to the advancing direction of the tensioning sports car 8, a steel wire 10 is horizontally and fixedly connected to the position, right side face of the tensioning sports car 8 is opposite to a button 901 of the travel switch 9, the tensioning sports car 8 is located on a track 11, a switch box 902 of the travel switch 9 is fixedly connected with a longitudinal beam 12 of the adhesive tape machine, and two ends of the normally open contact 1 are connected with a host PLC.
Specifically, the length of the steel wire 10 is less than or equal to the distance between the tensioning sports car 8 and the button 901 of the travel switch 9.
The utility model discloses a working process does: the temperature protection device 1 acts when the temperature of the roller is too high, the host PLC connected with the temperature protection device 1 controls the automatic stop operation of the adhesive tape machine, and meanwhile, the water spraying device 3 works to spray water on the adhesive tape 6 and the roller to cool down, so that the safety of the adhesive tape machine is protected. When 6 skids of sticky tape and produces smog, smog protection device 2 works, and the host computer PLC control sealing-tape machine automatic shutdown operation of being connected with smog protection device 2, and watering device 3 sprinkles and reduces poisonous harmful smog concentration, and the control substation receives the signal and monitors smog concentration.
When the belt conveyor runs and the temperature of the roller exceeds a preset value, the temperature patrol instrument 102 receives a signal of a PT100 platinum thermal resistor and compares the signal with the preset value (50 ℃). If once the temperature is higher than the preset value (50 ℃), the patrol inspection instrument immediately gives an alarm to act, a normally open point J is closed, a coil of an intermediate relay ZJ is electrified, a normally open contact ZJ1 and a normally open contact ZJ2 are closed, a host PLC receives signals and controls the automatic stop operation of the adhesive tape machine, and meanwhile, the water spraying device 3 is electrified to start to spray water and cool.
When the adhesive tape machine runs and the adhesive tape 6 slips and generates smoke, two groups of switching value output signals are expanded by additionally arranging a 24V intermediate relay ZJ2 on the original smoke sensor. When the smoke sensor 201 acts, the normally open contact YJ is closed, and the coil ZJ24 of the intermediate relay ZJ2 is electrified to work. Normally open contacts ZJ21, ZJ22, ZJ23 are closed, host PLC received signal and control sealing-tape machine automatic shutdown, and watering device 3 sprinkles water and reduces smog concentration and control team to the effective control of rubber-tape machine lane smog in the pit.
When the adhesive tape machine runs, and the tensioning roller 5 rolls towards the loosening direction due to accidents such as pressure relief of a tensioning oil cylinder, loosening of a tensioning foundation and the like, the steel wire 10 fixedly connected with the tensioning sports car 8 is close to the button 901 of the travel switch 9 until the button 901 is extruded to enable the travel switch 9 to act, the normally open contact J1 is closed, the host PLC receives signals and controls the adhesive tape machine to automatically stop running, and the expansion of the adhesive tape machine accidents is avoided.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A protection system of a sealing-tape machine is characterized by comprising a temperature protection device, a smoke protection device, a host PLC and a watering device, the sprinkler comprises an electric ball valve, one water inlet and at least one water outlet, the water inlet is connected with the electric ball valve through a water inlet pipeline, the electric ball valve is connected with the water outlet through a water outlet pipeline, the smoke protection device is connected with the electric ball valve and the host PLC, the temperature protection device is connected with the host PLC and the electric ball valve, the adhesive tape machine comprises a driving roller, the driving roller is formed by winding adhesive tapes on a plurality of rollers, the temperature protection device is arranged on one side of one roller, one side of one roller is right opposite to one water outlet of the water spraying device, one side of the roller adjacent to the one roller is opposite to the other water outlet of the water sprinkling device.
2. The protection system of claim 1, wherein the temperature protection device comprises PT100 platinum thermal resistor, temperature polling device and intermediate relay ZJ, the temperature polling instrument comprises a normally open contact J, a power terminal RA, a power terminal RB, a signal terminal C, a +24V power terminal and a 0V power terminal, an intermediate relay ZJ comprises a normally open contact ZJ1, a normally open contact ZJ2 and a coil ZJ3, the first end, the second end and the third end of the PT100 platinum thermal resistor are respectively connected with the power supply terminal RA, the power supply terminal RB and the signal terminal C, the +24V power supply end and the 0V power supply end are respectively connected with two ends of a power supply V1, one end of the normally open contact J is connected with one end of a coil ZJ3 of the intermediate relay ZJ through a power supply V2, and the other end of the coil ZJ3 is connected with the other end of the normally open contact J; the two ends of the normally open contact ZJ1 are connected with the host PLC, one end of the normally open contact ZJ2 is connected with one end of an electric ball valve of the sprinkler through a power supply V3 of the sprinkler, the other end of the normally open contact ZJ2 is connected with the other end of the electric ball valve, and the PT100 platinum thermal resistor is arranged on one side of one roller.
3. The protection system of claim 2, wherein the power source V1 and the power source V2 are both 24V.
4. The protection system of the adhesive tape machine according to claim 2, wherein the temperature patrol instrument further comprises a display screen, and the display screen comprises a station display and a temperature display.
5. The protection system of claim 2, wherein the electric ball valve is a DFH-20-7 mining intrinsic safety type electric ball valve.
6. The protection system of claim 1, wherein the smoke protection device comprises a smoke sensor and an intermediate relay ZJ2, the smoke sensor comprises a normally open contact YJ, the intermediate relay ZJ2 comprises a normally open contact ZJ21, a normally open contact ZJ22 and a coil ZJ24, one end of the normally open contact YJ is connected with one end of the coil ZJ24 through a power supply V4, and the other end of the coil ZJ24 is connected with the other end of the normally open contact YJ; and two ends of the normally open contact ZJ21 are connected with the host PLC, and two ends of the normally open contact ZJ22 are connected with the electric ball valve of the sprinkler.
7. The protection system of claim 6, wherein the intermediate relay ZJ2 further comprises a normally open contact ZJ23, and both ends of the normally open contact ZJ23 are connected with a main controller of the monitoring substation.
8. The protection system of claim 1, further comprising a lower tension limit protection device, wherein the lower tension limit protection device comprises a tensioning carriage and a travel switch, the tape machine further comprises a tensioning roller, the travel switch comprises a button, a switch box and a normally open contact J1, the button is pressed, the normally open contact J1 is closed, the button is located on the left side face of the switch box, and the normally open contact J1 is integrated in the switch box; the tensioning trolley is characterized in that the tensioning roller is fixedly connected to the tensioning trolley, a steel wire is horizontally and fixedly connected to the position, right side face of the tensioning trolley is opposite to a button of the travel switch, the tensioning trolley is located on a track, a switch box of the travel switch is fixedly connected with a longitudinal beam of the adhesive tape machine, and two ends of the normally open contact J1 are connected with a host PLC.
9. The protection system of claim 8, wherein the length of the steel wire is less than or equal to the distance between the tensioning carriage and the button of the travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920508539.6U CN209834867U (en) | 2019-04-12 | 2019-04-12 | Sealing-tape machine protection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920508539.6U CN209834867U (en) | 2019-04-12 | 2019-04-12 | Sealing-tape machine protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911552A (en) * | 2019-04-12 | 2019-06-21 | 淮南矿业(集团)有限责任公司 | A kind of sealing-tape machine protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911552A (en) * | 2019-04-12 | 2019-06-21 | 淮南矿业(集团)有限责任公司 | A kind of sealing-tape machine protection system |
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