CN217037363U - Automatic information acquisition device for concrete mixing plant - Google Patents
Automatic information acquisition device for concrete mixing plant Download PDFInfo
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- CN217037363U CN217037363U CN202123343591.7U CN202123343591U CN217037363U CN 217037363 U CN217037363 U CN 217037363U CN 202123343591 U CN202123343591 U CN 202123343591U CN 217037363 U CN217037363 U CN 217037363U
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Abstract
The utility model provides an automatic information acquisition device for a concrete mixing plant, which comprises an aggregate temperature acquisition unit, a machine outlet temperature acquisition unit, a controller and a communication module. The aggregate temperature acquisition unit comprises a plurality of temperature sensors, a plurality of Hall current sensors and a plurality of ultrasonic distance sensors, wherein the temperature sensors are arranged at a feeding hole of the mixing building, a feeding hole of each primary air cooling bin, a feeding hole of each secondary air cooling bin and the conveying belt, the Hall current sensors are arranged on a power supply cable of a driving motor of the conveying belt in a penetrating manner, and the ultrasonic distance sensors are arranged at the end part of the conveying belt. The outlet temperature acquisition unit comprises a temperature sensor arranged at the outlet of the mixer. The signal output ends of the temperature sensors, the Hall current sensors and the ultrasonic distance sensors are respectively connected with the signal input end of the controller; the controller senses the position of the aggregate according to the Hall current sensor and the ultrasonic distance sensor and reads the temperature of the aggregate or concrete at different positions and different time periods; and uploading the data to an upper computer/server through a communication module.
Description
Technical Field
The utility model relates to an information acquisition device, in particular to an information acquisition device for automatically acquiring aggregate temperature of a concrete mixing plant and concrete temperature at a mixer outlet.
Background
The aggregate temperature of the concrete mixing plant and the concrete temperature at the mixer outlet are main indexes for controlling the production quality of the concrete mixing plant. At present, the collection mode of concrete mix building aggregate temperature, mixer export concrete temperature is mainly artifical the collection, and the handheld contact temperature sensor of operative employee gathers promptly, has not realized automatic, intelligent collection yet, and its drawback is: 1. due to the influences of a plurality of factors such as the particle size of aggregate, strength, aggregate transportation speed, discharging opportunity at an outlet, receiving space and the like, manual collection cannot timely and accurately grasp collection time and collection intervals, so that the collected data is discontinuous and inaccurate, and the data availability is low; 2. because the contact temperature sensor is used during manual collection, the contact temperature sensor is directly inserted into aggregate or concrete for temperature measurement during collection, the aggregate or concrete falls down under the action of gravity, and the contact temperature sensor is easily broken, so that the temperature sensor is easy to damage and wear, and is frequently replaced; 3. the temperature measuring working environment of an operator is severe.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to provide an automatic information acquisition device for a concrete mixing plant. The information acquisition device can automatically acquire the aggregate temperatures and the concrete temperature at the outlet of the mixer in different types and different positions according to the aggregate conveying state and position and the outlet state of the mixer, and the data acquisition is accurate and timely and has high reference value.
In order to achieve the purpose, the utility model adopts the following technical scheme: an automatic information acquisition device for a concrete mixing plant comprises an aggregate temperature acquisition unit, a machine outlet temperature acquisition unit, a controller, a communication module and a power module;
the aggregate temperature acquisition unit comprises at least nine temperature sensors, at least four closed-loop Hall current sensors and at least four ultrasonic distance sensors;
the nine temperature sensors comprise six temperature sensors arranged in a primary air cooling area of the mixing plant and three temperature sensors arranged in a secondary air cooling area of the mixing plant; the six temperature sensors arranged in the primary air cooling area comprise a first temperature sensor arranged at a feed inlet of the primary air cooling area, a second temperature sensor arranged at a feed outlet of a primary air cooling super-large stone bin, a third temperature sensor arranged at a feed outlet of the primary air cooling large stone bin, a fourth temperature sensor arranged at a feed outlet of a primary air cooling medium stone bin, a fifth temperature sensor arranged at a feed outlet of a primary air cooling small stone bin and a sixth temperature sensor arranged at a main feed outlet of the primary air cooling area; the three temperature sensors arranged in the secondary air cooling area comprise a seventh temperature sensor arranged at a feed opening of a secondary air cooling super stone bin, an eighth temperature sensor arranged at a feed opening of a secondary air cooling super stone bin and a ninth temperature sensor arranged at a mixing machine feed opening of the mixing area;
the four closed-loop Hall current sensors comprise two closed-loop Hall current sensors arranged in a primary air cooling area of the mixing plant and two closed-loop Hall current sensors arranged in a secondary air cooling area of the mixing plant; the two closed-loop Hall current sensors installed in the primary air cooling area comprise a first closed-loop Hall current sensor arranged on a motor power supply cable for driving a conveying belt at a feeding hole of the primary air cooling area to operate in a penetrating manner and a second closed-loop Hall current sensor arranged on a motor power supply cable for driving a conveying belt below a feeding hole of each primary air cooling area to operate in a penetrating manner; the two closed-loop Hall current sensors installed in the secondary air cooling area comprise a third closed-loop Hall current sensor and a fourth closed-loop Hall current sensor which are respectively arranged on a motor power supply cable for driving a conveyor belt below the secondary air cooling super-large stone bin and the secondary air cooling super-large stone bin to operate in a penetrating manner;
the four ultrasonic distance sensors comprise two ultrasonic distance sensors arranged in a primary air cooling area of the mixing plant and two ultrasonic distance sensors arranged in a secondary air cooling area of the mixing plant; the two ultrasonic distance sensors arranged in the primary air cooling area are a first ultrasonic distance sensor arranged at a feed inlet of the primary air cooling area and a second ultrasonic distance sensor arranged at the end part of the conveyor belt below a feed outlet of the primary air cooling area; the two ultrasonic distance sensors arranged in the secondary air cooling area are a third ultrasonic distance sensor arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling super-large stone bin and a fourth ultrasonic distance sensor arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling large stone bin;
the signal output ends of all temperature sensors, all closed-loop Hall current sensors and all ultrasonic distance sensors which form the aggregate temperature acquisition unit are respectively connected with the signal input end of the controller;
the outlet temperature acquisition unit comprises a tenth temperature sensor arranged at the outlet of the mixing machine in the mixing area, and the signal output end of the temperature sensor is connected with the signal input end of the controller; meanwhile, a normally closed contact or a normally open contact of an electromagnetic valve for controlling the mixer outlet to be opened is connected with a signal input end of the controller;
the serial port of the controller is connected with the communication module, and the controller uploads the aggregate temperatures read by the controller at different positions and the concrete temperature at the mixer outlet to the upper computer/server through the communication module according to a ZigBee protocol or a TCP/IP protocol.
In a preferred embodiment of the utility model, the ultrasonic distance sensor is a columnar ultrasonic distance sensor, the ultrasonic distance sensor is fixed on a U-shaped bracket, and the U-shaped bracket is fixed on a conveyor belt bracket of a primary air cooling area and a secondary air cooling area of a mixing plant; the signal transmitting direction of the ultrasonic distance sensor is parallel to the running direction of the conveyor belt; the ultrasonic distance sensor is positioned above the conveyor belt, and the vertical distance between the ultrasonic distance sensor and the conveyor belt is 5 cm-10 cm.
In a preferred embodiment of the utility model, the first temperature sensor arranged at the feeding port of the primary air cooling area, the sixth temperature sensor arranged at the total discharging port of the conveyor belt below the primary air cooling bin and the ninth temperature sensor arranged at the feeding port of the mixing machine of the mixing area are fixed above the conveyor belt through U-shaped supports, and the vertical distance between the first temperature sensor and the conveyor belt is 30-40 cm; and the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the fifth temperature sensor which are arranged at the feed opening of the primary air cooling bin in the primary air cooling area, and the seventh temperature sensor and the eighth temperature sensor which are arranged at the feed opening of the secondary air cooling bin in the secondary air cooling area are all arranged on the side surface of the feed opening bracket of each air cooling bin through T-shaped brackets, form an included angle of 30-45 degrees with the feed opening, and are horizontally away from the central line of the feed opening by 25-30 cm.
In a preferred embodiment of the present invention, the temperature sensor is a non-contact infrared temperature sensor.
Drawings
FIG. 1 is a view of the present invention in its constructed and installed position;
FIG. 2 is a schematic diagram of the structure of the purge unit of the present invention.
Detailed Description
The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and therefore, the embodiments disclosed in the specification should not be construed as limiting the present invention, but merely as exemplifications of embodiments thereof, which are intended to make the features of the present invention obvious.
FIG. 1 is a schematic view of the structure and installation position of the present invention. As shown in the figure, a common concrete mixing plant comprises an aggregate primary air cooling zone 1, an aggregate secondary air cooling zone 2 and a mixing zone 3. The aggregate (namely the stone for mixing concrete) is firstly conveyed to an aggregate primary air-cooling area 1, and is respectively conveyed to a primary air-cooling extra-large stone bin 11, a primary air-cooling large stone bin 12, a primary air-cooling medium stone bin 13 and a primary air-cooling small stone bin 14 according to the difference of aggregate particle sizes after being sorted; after primary air cooling, the extra large stone aggregate and the large stone aggregate are conveyed to a secondary air cooling extra large stone bin 21 and a secondary air cooling large stone bin 22 of a secondary air cooling area 2 for secondary air cooling, and the medium stone aggregate and the small stone aggregate are directly conveyed to a feed inlet of a mixing machine of a mixing area 3; after primary air cooling and secondary air cooling, the aggregates (stones) with different grain sizes are conveyed to a feed inlet of a mixer 31 of a mixing area 3, and concrete mixing is carried out in the mixer; the mixed concrete finished product is poured out through a mixer outlet 32 of the mixer and is conveyed to a construction site.
Because the temperature of the aggregate after air cooling is an important index influencing the quality of the mixed concrete, and the temperature of the concrete at the mixer outlet of the mixer after mixing is a main index for measuring the production quality of the concrete mixing plant, the temperature of the aggregate after air cooling in each air cooling bin and the temperature of the concrete at the mixer outlet need to be accurately mastered in the concrete mixing process. As shown in fig. 1, the automatic information acquisition device for a concrete mixing plant of the present invention includes an aggregate temperature acquisition unit, an outlet temperature acquisition unit, a controller, a communication module, and a power module.
The aggregate temperature acquisition unit comprises at least nine temperature sensors, at least four closed-loop Hall current sensors and at least four ultrasonic distance sensors.
The nine temperature sensors comprise six temperature sensors arranged in a primary air cooling area of the mixing building and three temperature sensors arranged in a secondary air cooling area of the mixing building.
The six temperature sensors installed in the primary air cooling area comprise a first temperature sensor 41 installed at a feed inlet of the primary air cooling area, a second temperature sensor 42 installed at a feed outlet of the primary air cooling super-large stone bin 11, a third temperature sensor 43 installed at a feed outlet of the primary air cooling large stone bin 12, a fourth temperature sensor 44 installed at a feed outlet of the primary air cooling medium stone bin 13, a fifth temperature sensor 45 installed at a feed outlet of the primary air cooling small stone bin 14 and a sixth temperature sensor 46 installed at a main feed outlet of the primary air cooling area. The six temperature sensors are arranged to respectively measure the temperature of the aggregates treated by each primary air cooling bin and the temperature of all the aggregates before and after primary air cooling.
The three temperature sensors arranged in the secondary air cooling area comprise a seventh temperature sensor 47 arranged at a feed opening of a secondary air cooling large stone bin, an eighth temperature sensor 48 arranged at a feed opening of a secondary air cooling large stone bin and a ninth temperature sensor 49 arranged at a feed opening of a mixing machine in the mixing area. The three temperature sensors arranged in the secondary air cooling area are used for measuring the temperature of the aggregates treated by each secondary air cooling bin and the temperature of the aggregates before all the aggregates are conveyed into the mixing area, namely the temperature of the aggregates at the feeding port of the mixer.
The temperature of the aggregates with different particle sizes after primary air cooling and secondary air cooling is controlled, so that the time for stirring the aggregates with cement in the mixer can be better controlled, and the temperature of water injected into the mixer can be better controlled, so that the temperature of the mixed concrete meets the design requirement.
The four closed-loop Hall current sensors comprise two closed-loop Hall current sensors arranged in a primary air cooling area and two closed-loop Hall current sensors arranged in a secondary air cooling area.
The two closed-loop Hall current sensors installed in the primary air cooling area are a first closed-loop Hall current sensor 51 arranged on a motor power supply cable for driving the conveyor belt at the feed inlet of the primary air cooling area to operate in a penetrating manner and a second closed-loop Hall current sensor 52 arranged on a motor power supply cable for driving the conveyor belt below the feed inlet of each primary air cooling area to operate in a penetrating manner. The first closed loop hall current sensor 51 is used for sensing whether aggregates are conveyed to the feeding port of the primary air-cooling area 1, and when the first closed loop hall current sensor 51 senses that the aggregates are conveyed, the controller starts to read the temperature of the aggregates detected by the first temperature sensor 41 at the feeding port of the primary air-cooling area. The second closed loop hall current sensor 52 is used for sensing whether aggregates are dumped onto the conveyor belt below the feeding opening of the primary air cooling bin after primary air cooling, and when the second closed loop hall current sensor 52 senses that the aggregates after primary air cooling are dumped onto the conveyor belt, the controller starts to read the temperature of the aggregates after the primary air cooling zone.
Because the conveyor belts are respectively arranged below the secondary air-cooled super-large stone bin and the secondary air-cooled large stone bin, the two closed-loop Hall current sensors arranged in the secondary air-cooled area are a third closed-loop Hall current sensor 53 and a fourth closed-loop Hall current sensor 54 which are respectively arranged on motor power supply cables for driving the conveyor belts below the secondary air-cooled super-large stone bin and the secondary air-cooled large stone bin to operate in a penetrating manner and are used for sensing whether the discharge of the discharge hole of the secondary air-cooled super-large stone bin and the discharge hole of the secondary air-cooled large stone bin is discharged or not. When the closed-loop hall current sensor senses that the secondary air-cooled huge stone bin and/or the secondary air-cooled huge stone bin discharges materials, the controller reads the seventh sensor 47 and/or the eighth sensor 48.
After primary air cooling and secondary air cooling, aggregates with different particle sizes are conveyed to a feed inlet of the mixing area mixer 31, and before the aggregates are put into the mixer, the controller reads aggregate temperature data, detected by the ninth temperature sensor 49, of the aggregates put into the mixer.
The four ultrasonic distance sensors comprise two ultrasonic distance sensors arranged in a primary air cooling area and two ultrasonic distance sensors arranged in a secondary air cooling area.
The two ultrasonic distance sensors arranged in the primary air cooling area are a first ultrasonic distance sensor 61 arranged at a feed inlet of the primary air cooling area and a second ultrasonic distance sensor 62 arranged at the end part of the conveyor belt below a feed outlet of the primary air cooling area. The first ultrasonic distance sensor 61 is used for detecting whether the aggregates are conveyed to the feeding port of the primary air-cooling area, and if the first ultrasonic distance sensor 61 senses that the aggregates are conveyed to the feeding port, the controller starts to read the temperature of the aggregates detected by the first temperature sensor 41 at the feeding port of the primary air-cooling area. The second ultrasonic distance sensor 62 is used for detecting the primary air-cooled area bin feed opening from which the aggregates are poured, and the controller reads the temperature data detected by the second temperature sensor 42, the third temperature sensor 43, the fourth temperature sensor 44, the fifth temperature sensor 45 or the sixth temperature sensor 46 according to the position signals sensed by the second ultrasonic distance sensor 62.
When the first temperature sensor 41 to the sixth temperature sensor 46 start working once being electrified, the first temperature sensor will continuously detect the aggregate temperature at the position, in order to obtain meaningful and accurate aggregate temperature, the utility model arranges the closed loop type Hall current sensor and the ultrasonic position sensor at different positions, the purpose is to accurately grasp the aggregate position, the controller only reads the aggregate temperature when the aggregate is transmitted to the feeding port of the primary air cooling area and when the aggregate is discharged from each primary air cooling bin, and the controller does not read the data detected by the temperature sensors at other time periods.
The ultrasonic distance sensor arranged in the secondary air cooling area comprises a third ultrasonic distance sensor 63 arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling super-large stone bin and a fourth ultrasonic distance sensor 64 arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling large stone bin. When the third ultrasonic distance sensor 63 senses the discharge of the secondary air-cooled huge stone bin feed opening, the controller starts to read the aggregate temperature detected by the seventh temperature sensor 47. When the fourth ultrasonic distance sensor 64 senses that the discharge of the secondary air-cooled large stone bin discharge opening starts, the controller starts to read the aggregate temperature detected by the eighth temperature sensor 48.
When the seventh temperature sensor 47 to the ninth temperature sensor 49 start working once being electrified, the temperature data of the positions can be continuously detected, in order to obtain meaningful and accurate aggregate temperature, the utility model arranges the closed-loop Hall current sensor and the ultrasonic position sensor at different positions of the secondary air cooling area, the purpose is to accurately master the aggregate state after secondary air cooling, when the secondary air cooling bin discharges, all aggregates are put into the mixing area after primary air cooling and secondary air cooling are converged, the controller reads the aggregate temperature at the time point and the corresponding positions, and the data detected by the temperature sensors in other time periods are not read by the controller.
The closed-loop Hall current sensor is used for sensing the state of a motor driving the conveyor belt to run, when aggregate is loaded on the conveyor belt, the current in a power supply cable of the motor changes according to the weight of the aggregate on the conveyor belt, and the instant impact current of the starting of the motor can reach more than 4-7 times of the rated current, so that the Hall sensor senses the impact current of the motor and further senses whether the conveyor belt conveying the aggregate is loaded with the aggregate. The ultrasonic distance sensor detects position information where aggregate is transported on the conveyor belt by transmitting and receiving ultrasonic signals.
The signal output ends of a temperature sensor, a closed loop type Hall current sensor and an ultrasonic distance sensor which form the aggregate temperature acquisition unit are respectively connected with the signal input end of the controller. When the closed-loop Hall current sensor and the ultrasonic distance sensor sense that aggregates are on the conveyor belt, the controller immediately reads the aggregate temperatures at different positions detected by the temperature sensors, and therefore automatic collection of aggregate temperature information is achieved.
In an embodiment of the present invention, the ultrasonic distance sensor is a pillar-shaped ultrasonic distance sensor. During installation, the columnar ultrasonic distance sensor is fixed on a U-shaped support, and then the U-shaped support is fixed on the conveyor belt support. During installation, the signal transmitting direction of the ultrasonic distance sensor is parallel to the transmission direction of the conveyor belt, the columnar ultrasonic distance sensor is kept above the conveyor belt, and the vertical distance between the columnar ultrasonic distance sensor and the conveyor belt is 5 cm-10 cm.
The first temperature sensor 41 arranged at the feeding port of the primary air cooling area, the sixth temperature sensor 46 arranged at the total discharging port of the conveyor belt below the primary air cooling bin and the ninth temperature sensor 49 arranged at the feeding port of the mixing area are fixed above the conveyor belt bracket through U-shaped brackets, and the vertical distance between the first temperature sensor 41 and the conveyor belt is 30-40 cm. The second temperature sensor 42-the fifth temperature sensor 45 arranged at the feed opening of the primary air cooling bin, the seventh temperature sensor 47 and the eighth temperature sensor 48 arranged at the feed opening of each secondary air cooling bin are arranged on the side surface of the support of the feed opening of each air cooling bin through T-shaped supports, form an included angle of 30-45 degrees with the feed opening, and have a horizontal distance of 25-30 cm from the central line of the feed opening.
The outlet temperature acquisition unit comprises a tenth temperature sensor 7 arranged at the outlet 32 of the mixing zone mixer 31, and the signal output end of the temperature sensor is connected with the signal input end of the controller; meanwhile, a normally closed contact or a normally open contact of an electromagnetic valve for controlling the opening of the mixer outlet is connected with a signal input end of the controller. When the controller detects that the electromagnetic valve of the mixer outlet is operated and the mixer outlet is opened, the controller reads the concrete temperature at the mixer outlet detected by the tenth temperature sensor 7.
The controller forming the utility model can be a PLC or a 64-bit microprocessor, and the communication module is manufactured by Shenzhen Bei Fuke technology Limited and has the model of IBF 30. The controller uploads the aggregate temperature and the concrete temperature at the outlet of the machine, which are read by the controller, to the upper computer/server through the communication module according to a ZigBee protocol or a TCP/IP protocol.
In the preferred embodiment of the utility model, each temperature sensor for detecting the aggregate temperature is a non-contact infrared temperature sensor with high precision and high sensitivity and capable of adjusting the size of a detection area. The advantages are that: 1. the non-contact temperature sensor can avoid the damage of aggregate and stone particles in the mixed concrete to the sensor, and prolong the service life of the temperature sensor; 2. the non-contact sensor can effectively solve the problem of temperature drift caused by gaps between the contact temperature sensor and aggregate particles; 3. the non-contact temperature sensor can avoid the influence of the adhesion and solidification of the mixed concrete and the contact temperature sensor on the temperature measurement precision; 4. the infrared temperature sensor has the advantages that: the sensor is relatively less influenced by external factors (mainly influenced by distance, air temperature and dust), relatively mature and stable technology is favorable for popularization, and the installation condition is relatively loose compared with other non-contact temperature sensors.
As the aggregate is mixed with soil, dust in the aggregate can cover the surface of the temperature sensor during pouring of the aggregate, the surface cannot be cleaned for a long time, the sensitivity of the temperature sensor can be influenced, and the service life of the temperature sensor can also be influenced, so that the dust-removing device also comprises a plurality of purging units, and the dust on the temperature sensor can be periodically purged. As shown in fig. 2, each purging unit has the same structure, and includes a dust sensor 8 and a purging sleeve 9, the temperature sensor and the dust sensor are both disposed in the purging sleeve 9, and an air inlet 10 is disposed on a pipe wall of the purging sleeve 9. The signal output end of the dust sensor is connected with the signal input end of the controller. When the dust sensor senses that dust falling on the temperature sensor affects temperature collection sensitivity, the controller outputs a control signal to start the air compressor to blow air into the blowing sleeve, and the dust on the temperature sensor is blown off (the blowing can be closed when the dust falling on the temperature sensor is cleared until the temperature collection is met). Or the controller starts the air compressor at regular time, blows air into the sweeping sleeve and blows off dust on the temperature sensor.
Compared with the prior art, the utility model has the following advantages:
1. the automatic data acquisition is realized, the data acquisition is accurate, and the data validity is strong.
The utility model senses the motor state and aggregate position information of the driving conveyor belt through the Hall sensor and the ultrasonic distance sensor, and the controller reads the data detected by the temperature sensor when sensing that the conveyor belt really carries the aggregates and the aggregates are positioned at the position of the information to be collected, so that the utility model completely realizes the automatic collection of the information, can accurately collect the temperature information of the aggregates at different moments and different positions, and has strong validity of the collected data.
2. The non-contact infrared temperature sensor is adopted for temperature measurement, so that the phenomenon that the sensor is frequently damaged and replaced due to abrasion of aggregate and stone particles contained in mixed concrete can be avoided; the temperature drift caused by the clearance between the contact temperature sensor and the aggregate particles can be effectively solved; the data acquisition is accurate and the precision is high.
3. The temperature sensor has long service life and stable and reliable work.
Because each temperature sensor is provided with the dust sweeping unit, the dust sweeping device can sense the dust falling condition of the probe of the temperature sensor in time and sweep the dust on the temperature sensor in time, thereby ensuring the measurement precision of the temperature sensor, prolonging the service life of the temperature sensor and ensuring the stable and reliable work of the temperature sensor.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides a concrete mix building information automatic acquisition device which characterized in that: the device comprises an aggregate temperature acquisition unit, an outlet temperature acquisition unit, a controller, a communication module and a power module;
the aggregate temperature acquisition unit comprises at least nine temperature sensors, at least four closed-loop Hall current sensors and at least four ultrasonic distance sensors;
the nine temperature sensors comprise six temperature sensors arranged in a primary air cooling area of the mixing plant and three temperature sensors arranged in a secondary air cooling area of the mixing plant; the six temperature sensors arranged in the primary air cooling area comprise a first temperature sensor arranged at a feed inlet of the primary air cooling area, a second temperature sensor arranged at a feed outlet of a primary air cooling super-large stone bin, a third temperature sensor arranged at a feed outlet of the primary air cooling large stone bin, a fourth temperature sensor arranged at a feed outlet of a primary air cooling medium stone bin, a fifth temperature sensor arranged at a feed outlet of a primary air cooling small stone bin and a sixth temperature sensor arranged at a main feed outlet of the primary air cooling area; the three temperature sensors arranged in the secondary air cooling area comprise a seventh temperature sensor arranged at a feed opening of a secondary air cooling super large stone bin, an eighth temperature sensor arranged at a feed opening of a secondary air cooling large stone bin and a ninth temperature sensor arranged at a feed opening of a mixing machine in a mixing area;
the four closed-loop Hall current sensors comprise two closed-loop Hall current sensors arranged in a primary air cooling area of the mixing plant and two closed-loop Hall current sensors arranged in a secondary air cooling area of the mixing plant; the two closed-loop Hall current sensors installed in the primary air cooling area comprise a first closed-loop Hall current sensor arranged on a motor power supply cable for driving a conveying belt at a feeding hole of the primary air cooling area to operate in a penetrating mode and a second closed-loop Hall current sensor arranged on a motor power supply cable for driving the conveying belt below a discharging hole of each primary air cooling bin to operate in a penetrating mode; the two closed-loop Hall current sensors arranged in the secondary air cooling area comprise a third closed-loop Hall current sensor and a fourth closed-loop Hall current sensor which are respectively arranged on a motor power supply cable for driving the conveyor belt below the secondary air cooling super-large stone bin and the secondary air cooling super-large stone bin to run in a penetrating manner;
the four ultrasonic distance sensors comprise two ultrasonic distance sensors arranged in a primary air cooling area of the mixing plant and two ultrasonic distance sensors arranged in a secondary air cooling area of the mixing plant; the two ultrasonic distance sensors arranged in the primary air cooling area are a first ultrasonic distance sensor arranged at a feed inlet of the primary air cooling area and a second ultrasonic distance sensor arranged at the end part of the conveyor belt below a feed opening of the primary air cooling area; the two ultrasonic distance sensors arranged in the secondary air cooling area are a third ultrasonic distance sensor arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling super-large stone bin and a fourth ultrasonic distance sensor arranged at the end part of the conveyor belt below the feed opening of the secondary air cooling large stone bin;
the signal output ends of all temperature sensors, all closed-loop Hall current sensors and all ultrasonic distance sensors which form the aggregate temperature acquisition unit are respectively connected with the signal input end of the controller;
the outlet temperature acquisition unit comprises a tenth temperature sensor arranged at the outlet of the mixing machine in the mixing area, and the signal output end of the temperature sensor is connected with the signal input end of the controller; meanwhile, a normally closed contact or a normally open contact of an electromagnetic valve for controlling the opening of the mixer outlet of the mixer is connected with a signal input end of the controller;
the serial port of the controller is connected with the communication module, and the controller uploads the aggregate temperatures read by the controller at different positions and the concrete temperature at the mixer outlet to the upper computer/server through the communication module according to a ZigBee protocol or a TCP/IP protocol.
2. The automatic information acquisition device of a concrete mixing plant according to claim 1, characterized in that: the ultrasonic distance sensor is a columnar ultrasonic distance sensor, the ultrasonic distance sensor is fixed on a U-shaped support, and the U-shaped support is fixed on a conveyor belt support of a primary air cooling area and a secondary air cooling area of the mixing building;
the signal transmitting direction of the ultrasonic distance sensor is parallel to the running direction of the conveyor belt;
the ultrasonic distance sensor is positioned above the conveyor belt, and the vertical distance between the ultrasonic distance sensor and the conveyor belt is 5 cm-10 cm.
3. The automatic information acquisition device of a concrete mixing plant according to claim 1 or 2, characterized in that: the first temperature sensor arranged at a feed inlet of the primary air cooling area, the sixth temperature sensor arranged at a total discharge outlet of the conveying belt below the primary air cooling bin and the ninth temperature sensor arranged at a feed inlet of a mixing machine of the mixing area are fixed above the conveying belt through U-shaped supports, and the vertical distance between the ninth temperature sensor and the conveying belt is 30-40 cm;
and the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the fifth temperature sensor which are arranged at the feed opening of the primary air cooling bin in the primary air cooling area, and the seventh temperature sensor and the eighth temperature sensor which are arranged at the feed opening of the secondary air cooling bin in the secondary air cooling area are all arranged on the side surface of the feed opening bracket of each air cooling bin through T-shaped brackets, form an included angle of 30-45 degrees with the feed opening, and are horizontally away from the central line of the feed opening by 25-30 cm.
4. The automatic information acquisition device of a concrete mixing plant according to claim 3, characterized in that: and each temperature sensor is a non-contact infrared temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123343591.7U CN217037363U (en) | 2021-12-28 | 2021-12-28 | Automatic information acquisition device for concrete mixing plant |
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| CN202123343591.7U CN217037363U (en) | 2021-12-28 | 2021-12-28 | Automatic information acquisition device for concrete mixing plant |
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