CN212302276U - Dust explosion-proof safety monitoring system - Google Patents
Dust explosion-proof safety monitoring system Download PDFInfo
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- CN212302276U CN212302276U CN202020819582.7U CN202020819582U CN212302276U CN 212302276 U CN212302276 U CN 212302276U CN 202020819582 U CN202020819582 U CN 202020819582U CN 212302276 U CN212302276 U CN 212302276U
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- bucket elevator
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- dust remover
- dust
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Abstract
The utility model discloses a dust explosion-proof safety monitoring system, which comprises a dust remover body, a bucket elevator body, a buried scraper conveyor body, a main control module, a display module and an alarm module; the dust remover body is provided with a dust remover temperature monitoring module and a dust remover pressure difference monitoring module; the bucket elevator body is provided with a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module and a bucket elevator stall slip monitoring module; the chain breakage monitoring module of the buried scraper conveyor is arranged on the buried scraper conveyor body. The utility model relates to an explosion-proof safety monitoring system of dust can carry the machine and bury in real time to dust remover, fill and scrape the conveyer and monitor to send monitored signal for host system in real time, show or control alarm module by host system control display module and report to the police, improved the security, but wide application in workshop appliance technical field.
Description
Technical Field
The utility model belongs to the technical field of workshop appliance technique and specifically relates to an explosion-proof safety monitoring system of dust.
Background
The dust produced in the industrial production process can cause the potential safety hazard of dust explosion. In the production and processing industries of grains, feeds and the like, raw materials such as corn, bean pulp and the like are used for production and processing, and the produced feed dust, corn starch, rice starch, wheat starch and the like belong to combustible dust.
Common production and processing equipment in the production and processing industries of grains, feeds and the like: such as a dust remover, a bucket elevator and a buried scraper conveyor, explosive dust clouds exist for a long time, dust explosion is easy to occur due to reasons such as faults, and the dust remover has quite serious destructive capability.
In the prior art, common production equipment in industries such as grains and feeds has no safety monitoring system, and the equipment abnormity cannot be detected at the early stage of the fault, so that great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a higher explosion-proof safety monitoring system of dust of security.
The embodiment of the utility model provides a dust explosion-proof safety monitoring system, which comprises a dust remover body, a bucket elevator body, a buried scraper conveyor body, a main control module, a display module and an alarm module;
the dust remover body is provided with a dust remover temperature monitoring module and a dust remover pressure difference monitoring module;
the bucket elevator body is provided with a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module and a bucket elevator stall slip monitoring module;
a chain breakage monitoring module of the buried scraper conveyor is arranged on the buried scraper conveyor body;
the main control module is respectively connected with a dust remover temperature monitoring module, a dust remover pressure difference monitoring module, a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module, a bucket elevator stall slip monitoring module and a buried scraper conveyor broken chain monitoring module;
the main control module is also connected with the display module and the alarm module.
Further, dust remover temperature monitoring module includes temperature transmitter, temperature transmitter installs the air intake department of dust remover body, temperature transmitter is connected to host system.
Further, the dust remover pressure difference monitoring module comprises a pressure difference transmitter, and the pressure difference transmitter is connected to the main control module.
Further, the bucket elevator shaft temperature monitoring module comprises a PT100 thermal resistor, the PT100 thermal resistor is installed on the rotating shaft of the bucket elevator body, and the PT100 thermal resistor is connected to the main control module.
Further, the bucket elevator off tracking monitoring module includes first travel switch and second travel switch, first travel switch and second travel switch are installed respectively the left and right sides of bucket elevator body, first travel switch and second travel switch are connected to host system.
Further, the bucket elevator off tracking monitoring module still includes first proximity switch and second proximity switch, first proximity switch and second proximity switch are installed respectively the upper and lower axle of bucket elevator body, first proximity switch and second proximity switch are connected to host system.
The utility model discloses be equipped with dust remover temperature monitoring module and dust remover pressure differential monitoring module on the dust remover body, it carries quick-witted axle temperature monitoring module to be equipped with the fill on the fill is carried the quick-witted body, the fill is carried quick-witted off tracking monitoring module and fill and is carried quick-witted stall monitoring module that skids, it buries and scrapes conveyer broken chain monitoring module to be equipped with on scraping the conveyer body to bury, can be in real time to the dust remover, the fill is carried the machine and is buried and scrape the conveyer and monitor, and give host system with monitoring signal real-time transmission, show or control alarm module reports to the police by host system control display module, the security has been improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a dust explosion-proof safety monitoring system of the present invention;
fig. 2 is a block diagram of the overall structure of a dust explosion-proof safety monitoring system of the present invention;
fig. 3 is an electrical control schematic diagram of a dust explosion-proof safety monitoring system of the present invention;
fig. 4 is the utility model discloses an explosion-proof safety monitoring system's of dust PLC electrical control schematic diagram.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the embodiments in the following description.
Referring to fig. 1, an embodiment of the present invention provides a dust explosion-proof safety monitoring system, which includes a dust collector body 13, a bucket elevator body 14, a scraping conveyor body 15, a main control module, an alarm module 1 and a display module 2;
the dust remover body is provided with a dust remover temperature monitoring module 3 and a dust remover pressure difference monitoring module 4;
the bucket elevator body is provided with a bucket elevator shaft temperature monitoring module 5, a bucket elevator deviation monitoring module and a bucket elevator stall slip monitoring module.
The system comprises two bucket elevator deviation monitoring modules, namely a first bucket elevator deviation monitoring module 7 and a second bucket elevator deviation monitoring module 8; and two bucket elevator stall skid monitoring modules, namely a first bucket elevator stall skid monitoring module 6 and a second bucket elevator stall skid monitoring module 9.
As shown in fig. 1, the broken chain monitoring module of the buried scraper conveyor of the system includes a first broken chain monitoring module 10 and a second broken chain monitoring module 11.
In addition, the main control module of the present embodiment is disposed in the control box 12.
Referring to fig. 2, in the safety monitoring system of the embodiment, the main control module is respectively connected to a dust remover temperature monitoring module, a dust remover pressure difference monitoring module, a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module, a bucket elevator stall slip monitoring module and a buried scraper conveyor broken chain monitoring module; the main control module is also connected with the display module and the alarm module.
Specifically, dust remover temperature monitoring module includes dust remover temperature monitoring unit, and temperature monitoring unit passes through electrical connection with the signal of telecommunication that the dust remover temperature corresponds and inputs host system. The dust remover temperature monitoring unit comprises an integrated temperature transmitter arranged at an air inlet of the dust remover, and an induction probe of the integrated temperature transmitter extends into the air pipe of the air inlet of the dust remover. When the temperature of the air inlet of the dust remover is more than 70 ℃, the dust remover has potential explosion safety hazard. Therefore, when the temperature transmitter monitors that the temperature is higher than 70 ℃, the PLC of the main control module outputs an abnormal temperature signal, controls the alarm module to give out sound and light alarm and controls the display module to display temperature alarm.
The dust remover pressure difference monitoring module comprises a dust remover pressure difference monitoring unit for monitoring the pressure difference value at two sides of a filter cloth bag of the dust remover. The differential pressure monitoring unit inputs an electric signal corresponding to the differential pressure of the dust remover into the main control module through electrical connection. The dust remover differential pressure monitoring unit comprises a differential pressure transmitter arranged on the dust remover, a high pressure port of the differential pressure transmitter is connected into a dust remover dirty chamber through a rubber hose, and an air inlet of a low pressure port is connected into a dust remover clean chamber through a rubber hose. The pressure difference value of the two sides of the cloth bag filtering surface is monitored to indirectly obtain whether the cloth bag working state of the dust remover is normal. The working pressure difference of the common negative pressure pulse bag-type dust collector is about 0.2kPa-2.0 kPa. When the pressure difference of the dust remover is less than 0.2kPa, the situation that the cloth bag is damaged or falls off or the dust removing fan fails possibly exists in the dust remover, and the pressure difference value is reduced due to the reduction of the resistance of the cloth bag or the abnormal operation of the fan. When the pressure difference of the dust remover is more than 2.0kPa, the situation that the dust remover has the possibility of powder accumulation and agglomeration of a cloth bag or excessive powder accumulation in a dirty chamber of the dust remover is shown. The increased resistance through the cloth bag results in an increased differential pressure value. Therefore, when the differential pressure transmitter monitors that the temperature is more than 2.0kPa or less than 0.2kPa, the PLC of the main control module outputs a differential pressure abnormal signal, sound and light alarm is generated, and the display module displays the differential pressure alarm.
The bucket elevator shaft temperature monitoring module comprises a bucket elevator shaft temperature monitoring unit, and the electric signals corresponding to the bucket elevator shaft temperature are input into the main control module through electrical connection by the shaft temperature monitoring unit. The shaft temperature monitoring unit comprises a PT100 thermal resistor arranged on a rotating shaft of the bucket elevator, and a sensing part of the thermal resistor extends into a bearing of the bucket elevator. When the temperature of the rotating shaft of the bucket elevator is more than 80 ℃, the bucket elevator has potential explosion safety hazards. Therefore, when the temperature monitored by the thermal resistor is higher than 80 ℃, the PLC of the main control module outputs an abnormal shaft temperature signal, audible and visual alarm is generated, and the display module displays the shaft temperature alarm.
The bucket elevator deviation monitoring module comprises a bucket elevator deviation monitoring unit, when deviation occurs in the bucket elevator, the deviation monitoring unit is triggered to work, and abnormal signals are input into the main control module through electrical connection by the monitoring unit. The deviation monitoring unit comprises travel switches arranged on the left side and the right side of the bucket elevator. And monitoring balls of the travel switch extend into two sides of the bucket elevator. When the bucket elevator deviates, the bucket can deviate to two sides and touch the travel switch. The bucket elevator has a deviation, abnormal operation of internal parts such as a bucket and a belt easily causes friction to generate sparks, and dust explosion potential safety hazards exist, so that when the travel switch is touched, the PLC of the main control module outputs a deviation abnormal signal, sound and light alarm is generated, and the display module displays deviation alarm.
The bucket elevator stall slip monitoring module comprises a bucket elevator upper shaft rotation frequency monitoring unit and a bucket elevator lower shaft rotation frequency monitoring unit, and when the bucket elevator upper shaft and the bucket elevator lower shaft rotate, the rotation frequency monitoring unit inputs rotation speed signals of the bucket elevator upper shaft and the bucket elevator lower shaft into the main control module through electrical connection. The rotating speeds of the upper shaft and the lower shaft of the bucket elevator should be equal theoretically, and when the rotating speeds of the upper shaft and the lower shaft of the bucket elevator are not consistent, the fact that a belt in the bucket elevator possibly slips is shown, high temperature, sparks and the like are easily generated due to the slipping friction of the belt, and potential safety hazards of dust explosion exist. When the upper shaft rotation frequency and the lower shaft rotation frequency received by the controller are inconsistent, the rotation speed difference value is usually more than 3 circles within 1 minute, a PLC (programmable logic controller) of the main control module outputs a slipping abnormal signal, an audible and visual alarm is generated, and the display module displays the slipping alarm.
The chain breakage monitoring module of the buried scraper conveyor comprises a buried scraper conveyor driving shaft and driven shaft rotation frequency monitoring unit, and when the driving shaft and the driven shaft rotate, rotation speed signals of the buried scraper conveyor driving shaft and the driven shaft are input into a main control module through electrical connection by the rotation frequency monitoring unit. The rotating speeds of a driving shaft and a driven shaft of the buried scraping conveyor are theoretically equal, and when the rotating speeds of the shafts of the buried scraping conveyor are inconsistent, the phenomenon of chain breakage possibly exists in the buried scraping conveyor, and potential safety hazards of dust explosion exist. When the rotation frequency of the driving shaft and the rotation frequency of the driven shaft received by the controller are not consistent, the rotation speed difference value is usually more than 3 circles within 1 minute, a PLC (programmable logic controller) of the main control module outputs a chain breakage abnormal signal, audible and visual alarm is generated, and the display module displays the chain breakage alarm.
As shown in fig. 1, the display module and the alarm module are disposed on the control box 12, the display module of this embodiment is a display screen with a touch function, and the content of the display screen is controlled by the main control module. The alarm module comprises an audible and visual alarm, and the start and stop of the audible and visual alarm are controlled by the main control module.
In addition, referring to fig. 3, the present embodiment provides an electrical control schematic diagram of a safety monitoring system, which includes a differential pressure transmitter, a temperature transmitter, a thermal resistor, a proximity switch, a travel switch, a power supply, a PLC controller, a relay, a display screen, and an audible and visual alarm.
Wherein the power supply is capable of converting alternating current to 24V direct current.
The differential pressure transmitter, the temperature transmitter, the thermal resistor, the travel switch and the frequency sensor are used for collecting the running state parameters of the equipment, and various signal outputs are connected with IO (input/output) points of the PLC controller through cables.
Wherein, the signals of the differential pressure transmitter and the temperature transmitter are analog quantity signals and are input into an AI (analog input) contact of the PLC; the thermal resistor is converted into an analog quantity signal and is input into an AI (analog input) contact of the PLC; signals of the travel switch and the frequency sensor are digital quantity signals and are input into a DI (digital input) contact of the PLC. The monitored signals are output to control signals through the PLC, and the display screen is controlled to display.
In order to realize the automatic alarm function, a safety value can be set for the PLC through the touch display screen, when the received measurement value is not in the safety value range, the PLC sends an alarm instruction to the audible and visual alarm, the audible and visual alarm is sent out by the alarm, and the display screen displays specific abnormal conditions and helps maintenance personnel to quickly locate a fault point.
Additionally, for fig. 3, L1 is the live line of AC220V and N is the neutral line of AC 220V. In fig. 3, the power supply is externally supplied through AC220V, the whole circuit power supply is controlled through 1 breaker, then the power supply is supplied to the touch screen and the PLC through 1 DC24V switch power supply, and the on-off of the alarm lamp is controlled through the normally open contact of the relay controlled by the PLC.
For FIG. 4, I0.0-I0.4 represent 5 DI (digital input) points, 1M represents incoming DC0V, 1L and L + represent incoming DC24V, Q0.0 represents DO (digital output) points, A +, A-represents the first channel of analog, B +, B-represents the second channel of analog, and C +, C-represents the third channel of analog.
In fig. 4, a switch line numbered 1 receives an upper stall signal of the elevator, a switch line numbered 2 is connected to a lower stall signal of the elevator, the two signals are respectively connected to I0.0 and I0.1 points of the PLC, the on-off times of I0.0 and I0.1 in unit time are determined by the PLC, if the on-off times are consistent, the elevator runs normally, no stall occurs, and if the on-off times are inconsistent, the elevator has a fault, the elevator outputs to a Q0.0 point alarm for alarm and recording.
In fig. 4, a switch circuit with the reference number 3 receives a deviation signal of the hoist, the deviation signal of the hoist is connected to an I0.2 point of the PLC, when the PLC determines that the I0.2 is connected, the deviation of the hoist is represented, the deviation signal is output to a Q0.0 point alarm to alarm and record, and if the I0.2 is not connected, the normal operation is represented.
In fig. 4, a switch circuit with the reference number of 4 receives an upper chain breakage signal of the scraper, a switch circuit with the reference number of 5 receives a lower chain breakage signal of the scraper, the upper chain breakage signal and the lower chain breakage signal are respectively connected to I0.3 and I0.4 points of a PLC, the PLC determines the on-off times of I0.3 and I0.4 in unit time, if the on-off times are consistent, the scraper normally operates, no chain breakage occurs, and if the on-off times are inconsistent, the scraper fails, the switch circuit outputs to a Q0.0 point alarm to alarm and record.
The shaft temperature of the elevator is connected to the first point A +, A-of the analog quantity module, the PLC determines whether the temperature exceeds the set alarm temperature value, and if the temperature exceeds the set alarm temperature value, the temperature is output to a Q0.0 point alarm to alarm and record.
The temperature of the dust remover is connected to a second point B +, B-of the analog quantity module, and the PLC determines whether the temperature exceeds a set alarm temperature value, and if the temperature exceeds the set alarm temperature value, the temperature is output to a Q0.0 point alarm to alarm and record.
The pressure difference of the dust remover is connected to a third point C +, C-of the analog quantity module, and the PLC determines whether the pressure difference exceeds a set pressure difference range, and if the pressure difference exceeds the set pressure difference range, the pressure difference is output to a Q0.0 point alarm to alarm and record.
To sum up, the utility model discloses an all-round real time monitoring dust remover body, fill lifting machine body and bury the operational data of scraping the conveyer body and monitor production and processing equipment, when master control module monitored the abnormal conditions, timely control alarm module sent the warning to effective prevention dust explosion has improved the factor of safety of production.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (6)
1. The utility model provides an explosion-proof safety monitoring system of dust which characterized in that: the device comprises a dust remover body, a bucket elevator body, a buried scraper conveyor body, a main control module, a display module and an alarm module;
the dust remover body is provided with a dust remover temperature monitoring module and a dust remover pressure difference monitoring module;
the bucket elevator body is provided with a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module and a bucket elevator stall slip monitoring module;
a chain breakage monitoring module of the buried scraper conveyor is arranged on the buried scraper conveyor body;
the main control module is respectively connected with a dust remover temperature monitoring module, a dust remover pressure difference monitoring module, a bucket elevator shaft temperature monitoring module, a bucket elevator deviation monitoring module, a bucket elevator stall slip monitoring module and a buried scraper conveyor broken chain monitoring module;
the main control module is also connected with the display module and the alarm module.
2. A dust explosion-proof safety monitoring system according to claim 1, characterized in that: the dust remover temperature monitoring module comprises a temperature transmitter, the temperature transmitter is installed at an air inlet of the dust remover body, and the temperature transmitter is connected to the main control module.
3. A dust explosion-proof safety monitoring system according to claim 1, characterized in that: the dust remover pressure difference monitoring module comprises a pressure difference transmitter, and the pressure difference transmitter is connected to the main control module.
4. A dust explosion-proof safety monitoring system according to claim 1, characterized in that: the bucket elevator shaft temperature monitoring module comprises a PT100 thermal resistor, the PT100 thermal resistor is installed on a rotating shaft of the bucket elevator body, and the PT100 thermal resistor is connected to the main control module.
5. A dust explosion-proof safety monitoring system according to claim 1, characterized in that: the bucket elevator deviation monitoring module comprises a first travel switch and a second travel switch, the first travel switch and the second travel switch are respectively installed on the left side and the right side of the bucket elevator body, and the first travel switch and the second travel switch are connected to the main control module.
6. A dust explosion-proof safety monitoring system according to claim 5, characterized in that: the bucket elevator deviation monitoring module further comprises a first proximity switch and a second proximity switch, the first proximity switch and the second proximity switch are respectively installed on an upper shaft and a lower shaft of the bucket elevator body, and the first proximity switch and the second proximity switch are connected to the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020819582.7U CN212302276U (en) | 2020-05-15 | 2020-05-15 | Dust explosion-proof safety monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020819582.7U CN212302276U (en) | 2020-05-15 | 2020-05-15 | Dust explosion-proof safety monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN212302276U true CN212302276U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020819582.7U Active CN212302276U (en) | 2020-05-15 | 2020-05-15 | Dust explosion-proof safety monitoring system |
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| CN (1) | CN212302276U (en) |
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2020
- 2020-05-15 CN CN202020819582.7U patent/CN212302276U/en active Active
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