CN216482148U - Intelligent temperature control device of hot-blast stove of cotton and fruit drying machine - Google Patents
Intelligent temperature control device of hot-blast stove of cotton and fruit drying machine Download PDFInfo
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- CN216482148U CN216482148U CN202122936148.4U CN202122936148U CN216482148U CN 216482148 U CN216482148 U CN 216482148U CN 202122936148 U CN202122936148 U CN 202122936148U CN 216482148 U CN216482148 U CN 216482148U
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Abstract
The utility model provides an intelligent temperature control device of a hot-blast stove of a cotton and fruit dryer, which relates to the field of temperature control of the hot-blast stove of the dryer and comprises an intelligent temperature control device body and a temperature sensor arranged in the hot-blast stove of the dryer, wherein the intelligent temperature control device body comprises a touch screen, a Programmable Logic Controller (PLC), a frequency converter, a solid-state relay and a circuit breaker, and the intelligent temperature control device can stably control the temperature of the hot-blast stove of the dryer so that the hot-blast stove of the dryer can provide low-temperature, high-flow-rate and large-flow hot air required by drying.
Description
Technical Field
The utility model relates to an intelligent temperature control device, in particular to an intelligent temperature control device of a hot-blast stove of a cotton and fruit drying machine.
Background
The humidity of the just-picked cotton is larger, usually between 15% and 22%, in order to prevent mildew during transportation and storage and meet processing requirements, the moisture content of the cotton is generally controlled between 6.5% and 8.5%, in order to solve the problem of high moisture content, the cotton needs to be dried in time, the moisture content of the cotton is reduced to between 6.5% and 8.5%, a cotton dryer is usually adopted to dry and reduce the moisture of the cotton with higher humidity, the decomposition temperature of the cotton is 150 ℃, therefore, in the drying system, firstly, attention needs to be paid to the fact that the temperature is strictly controlled below 140 ℃ when hot air is mixed with the cotton, the cotton dryer needs low-temperature, high-flow-rate and large-flow hot air, fruits and the like need to be made into dry fruits and also need to be dried by using the dryer, the existing dryer hot air furnaces generally do not adopt an automatic temperature regulating device or only simply add an inserting plate for controlling the air volume, the conventional method is to control the air outlet temperature of a heat source, so that the temperature delay and the floatability are large, and the air volume is greatly influenced, so that the drying effect is influenced.
The existing dryer generally adopts a 380V power supply directly, and an alternating current contactor is used for controlling the connection and disconnection of a resistance wire, so that a hot blast stove of the dryer is heated, and the defects that the temperature control is inaccurate, and contacts of the alternating current contactor are frequently connected and disconnected, so that the contact is easy to burn to cause high failure rate are overcome.
Disclosure of Invention
In order to solve the problems, the utility model provides an intelligent temperature control device for a hot blast stove of a drying machine, and aims to improve the temperature control precision of the hot blast stove of the drying machine, reduce the faults of an original control device and improve the production efficiency.
In order to achieve the purpose, the intelligent temperature control device for the hot-blast stove of the dryer mainly adopts a PLC (programmable logic controller), a solid-state relay, a touch screen and a temperature sensor, can accurately control the temperature of each section of the hot-blast stove of the dryer, and greatly reduces the failure rate of the temperature control device.
Drawings
The present invention is described in further detail below with reference to the attached drawings.
FIG. 1 is an outline view of the present invention.
Fig. 2 is an electrical schematic of the present invention.
FIG. 3 is a main view of the touch panel of the present invention.
FIG. 4 is a diagram of a parameter setting screen of the touch screen of the present invention.
FIG. 5 is a diagram of an electric energy monitoring screen of the touch screen of the present invention.
As shown in figure 1, 2, an intelligent temperature control device body (1).
As shown in fig. 2, a touch screen (2), 3, a molded case circuit breaker (3), a 4.24V power supply (4), 5, a solid state relay 1 (5), 6, a solid state relay 2 (6), 7, a solid state relay 3 (7), 8, a solid state relay 4 (8), 9, a solid state relay 5 (9), 10, a solid state relay 6 (10), 11, a solid state relay 7 (11), 12, a solid state relay 8 (12), 13, a solid state relay 9 (13), 14, a solid state relay 10 (14), 15, a solid state relay 11 (15), 16, a solid state relay 12 (16), 17, a solid state relay 13 (17), 18, a solid state relay 14 (18), 19, a solid state relay 15 (19), 20, a solid state relay 16 (20), 21, a solid state relay 17 (21), 22, a solid state relay 18 (22), 23, a temperature sensor 1 (23), and a solid state relay 1 (18) (10, 13, and a solid state relay 18, and a solid state relay 13, and a solid state relay 15, 24. the system comprises temperature sensors 2 (24), 25, 3 (25), 26, 4 (26), 27, a PLC (27), 28, a frequency converter (28), 29, a first-zone heating main heater 1 (29), 30, a first-zone heating auxiliary heater 2 (30), 31, a second-zone heating main heater 3 (31), 32, a second-zone heating auxiliary heater 4 (32), 33, a third-zone heating main heater 5 (33), 34 and a third-zone heating auxiliary heater 6 (34).
Detailed Description
As shown in fig. 2, the preferred embodiment of the present invention is that the touch screen (2) adopts a 7 inch touch screen and is equipped with an ethernet interface, the molded case circuit breaker (3), 350A, 600V, and 24V power supply (4) adopts a plain weft 24VDC10A, rail mounted, solid state relays 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11), 8 (12), 9 (13), 10 (14), 11 (15), 12 (16), 13 (17), 14 (18), 15 (19), 16 (20), 17 (21), and 18 (22) adopt a 350A solid state relay, the temperature sensors 1 (23), 2 (24), 3 (25) and 4 (26) adopt thermocouples with model number of wrnk-231, the PLC (27) adopts Siemens S7-200 SMART and is matched with an analog input module, and the frequency converter (28) adopts a positive Tai 22KW frequency converter.
The temperature sensors 1 (23), 2 (24), 3 (25) and 4 (26) are respectively arranged at an inlet, a first heating area, a second heating area and a third heating area of the hot-blast stove of the dryer, the main heater 1 (29) of the first heating area, the auxiliary heater 2 (30) of the first heating area, the main heater 3 (31) of the second heating area, the auxiliary heater 4 (32) of the second heating area, the main heater 5 (33) of the third heating area and the auxiliary heater 6 (34) of the third heating area are respectively arranged at the first heating area, the second heating area and the third heating area of the hot-blast stove of the dryer.
The solid state relay 1 (5), the solid state relay 2 (6), the solid state relay 3 (7) control the heating of the main heater 1 (29), the solid state relay 4 (8), the solid state relay 5 (9), the solid state relay 6 (10) control the heating of the auxiliary heater 2 (30), the solid state relay 7 (11), the solid state relay 8 (12), the solid state relay 9 (13) controls the heating second-zone main heater 3 (31), the solid state relay 10 (14), the solid state relay 11 (15), the solid state relay 12 (16) controls the heating second-zone auxiliary heater 4 (32), the solid state relay 13 (17), the solid state relay 14 (18), the solid state relay 15 (19) controls the heating third-zone main heater 5 (33), the solid state relay 16 (20), the solid state relay 17 (21) and the solid state relay 18 (22) controls the heating third-zone auxiliary heater 6 (34).
The working principle and the working process of the utility model are as follows: the system is powered on and enters a main picture of a hot blast stove touch screen shown in the attached figure 3, the main picture of the touch screen displays the temperature of an inlet of the hot blast stove and three areas of the hot blast stove, the variable-frequency running state, the running state of the hot blast stove, the manual-automatic state, the manual-automatic mode switching button, the main picture button, the electric energy monitoring button and the parameter setting button, the electric energy meter monitoring button is clicked, the electric energy monitoring picture of the touch screen shown in the attached figure 5 is displayed, the parameter setting button is clicked, the parameter setting picture of the touch screen shown in the attached figure 4 is displayed, and the parameter setting picture is divided into two parts: the upper part of the picture is set by the frequency conversion frequency of the fan, the setting range is 18HZ to 50HZ, and the lower part of the picture is set by the temperature of each zone, and the setting range is 0 to 150 ℃.
When the system is operated in the manual mode: the heaters in the zones can be started only when the temperature is met after the fan is started.
When the system is operating in automatic mode: clicking an automatic start button, starting when a fan and a heater meet heating conditions, measuring the inlet temperature by temperature sensors 1 and 23 without participating in control, controlling two heaters for heating a first area by the temperature sensors 2 and 24, controlling two heaters for heating a second area by the temperature sensors 3 and 25, and controlling two heaters for heating a third area by the temperature sensors 4 and 26.
Taking the temperature control of the first heating zone as an example: when the actual temperature is lower than the lower limit of the set temperature of the heating area, the solid state relays 1 (5), 2 (6) and 3 (7) are switched on, the main heater 1 (29) of the heating area is started, the solid state relays 4 (8), 5 (9) and 6 (10) are switched on, and the auxiliary heater 2 (30) of the heating area is started. After a period of time heating, when the actual temperature is greater than the lower limit of the set temperature of the heating first area and less than the upper limit of the set temperature of the heating first area, the solid state relays 1 (5), 2 (6) and 3 (7) are disconnected, and the main heater 1 (29) of the heating first area is heated to stop heating. After heating the first-zone auxiliary heater 2 (30) for a period of time, when the actual temperature is higher than the set upper temperature limit of the first-zone heating, the solid-state relay 4 (8), the solid-state relay 5 (9) and the solid-state relay 6 (10) are switched off, the first-zone auxiliary heater 2 (30) stops heating, after a period of time for cooling, when the actual temperature is lower than the upper temperature limit of the first-zone heating, the solid-state relay 4 (8), the solid-state relay 5 (9) and the solid-state relay 6 (10) are switched on, the first-zone auxiliary heater 2 (30) is started, after a period of time, if the temperature is lower than the set lower temperature limit of the first-zone heating, the solid-state relay 1 (5), the solid-state relay 2 (6) and the solid-state relay 3 (7) are switched on, the first-zone main heater 1 (29) is started, if the temperature is higher than the set upper temperature limit of the first-zone heating, the solid-state relay 4 (8), the solid-state relay 5 (9), The solid-state relay 6 (10) is turned off, and the auxiliary heater 2 (30) is heated to stop heating.
The temperature control process for heating the second zone and the third zone is similar to that for heating the first zone.
The data collected by the temperature sensors 1 (23), 2 (24), 3 (25) and 4 (26) are input into the PLC Siemens S7-200 SMART analog quantity input module through cables, and the PLC Siemens S7-200 SMART output control signals control the solid-state relays 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11), 8 (12), 9 (13), 10 (14), 11 (15), 12 (16), 13 (17), 14 (18), 15 (19), 16 (20) and 17 (21), And (4) switching on and off of the solid-state relay 18 (22).
Claims (1)
1. An intelligent temperature control device of a hot-blast stove of a cotton and fruit dryer is characterized in that the device comprises a touch screen (2), a molded case circuit breaker (3), a 24V power supply (4), a solid-state relay (1), (5), a solid-state relay (2), (6), a solid-state relay (3), (7), a solid-state relay (4), (8), a solid-state relay (5), (9), a solid-state relay (6), (10), (11), a solid-state relay (8), (12), a solid-state relay (9), (13), a solid-state relay (10), (14), a solid-state relay (11), (15), a solid-state relay (12), (16), a solid-state relay (13), (17), a solid-state relay (14), (18), a solid-state relay (15), (19), a solid-state relay (16), (20), a solid-state relay (17), (21), a solid-state relay (18), (22), a temperature sensor (1), (23), a temperature sensor (2), (24), a temperature sensor (3), (25), The temperature sensors 4 (26), the PLC (27) and the frequency converter (28) are respectively arranged at an inlet, a first heating area, a second heating area and a third heating area of a hot-blast stove of the dryer, the temperature sensors 1 (23), the temperature sensors 2 (24), the temperature sensors 3 (25) and the temperature sensors 4 (26) are respectively arranged at an inlet, the first heating area, the second heating area and the third heating area of the hot-blast stove of the dryer, a main heater 1 (29) of the first heating area, an auxiliary heater 2 (30) of the first heating area, a main heater 3 (31) of the second heating area, an auxiliary heater 4 (32) of the second heating area, a main heater 5 (33) of the third heating area, an auxiliary heater 6 (34) of the third heating area are respectively arranged at the first heating area, the second heating area and the third heating area of the hot-blast stove of the dryer, the solid-state relay 1 (5), the solid-state relay 2 (6) and the solid-state relay 3 (7) control the main heater 1 (29) of the first heating area, the solid-state relay 4 (8), The solid state relay 5 (9), the solid state relay 6 (10) controls the auxiliary heater 2 (30) in the first heating area, the solid state relay 7 (11), the solid state relay 8 (12), the solid state relay 9 (13) controls the main heater 3 (31) in the second heating area, the solid state relay 10 (14), the solid state relay 11 (15), the solid state relay 12 (16) controls the auxiliary heater 4 (32) in the second heating area, the solid state relay 13 (17), the solid state relay 14 (18), the solid state relay 15 (19) controls the main heater 5 (33) in the third heating area, the solid state relay 16 (20), the solid state relay 17 (21) and the solid state relay 18 (22) controls the auxiliary heater 6 (34) in the third heating area, and when the system runs in an automatic mode: clicking an automatic start button, starting when a fan and a heater meet heating conditions, wherein the inlet temperature is measured by temperature sensors 1 and 23 and is not involved in control, temperature sensors 2 and 24 control two heaters for heating a first area, temperature sensors 3 and 25 control two heaters for heating a second area, and temperature sensors 4 and 26 control two heaters for heating a third area, taking temperature control of the first area as an example: when the actual temperature is lower than the set lower limit of the heating-first-zone temperature, the solid-state relays 1 (5), 2 (6) and 3 (7) are switched on, the main heating-first-zone heater 1 (29) is started, the solid-state relays 4 (8), 5 (9) and 6 (10) are switched on, the auxiliary heating-first-zone heater 2 (30) is started, after a period of heating, when the actual temperature is higher than the set lower limit of the heating-first-zone temperature and lower than the set upper limit of the heating-first-zone temperature, the solid-state relays 1 (5), 2 (6) and 3 (7) are switched off, the main heating-first-zone heater 1 (29) is heated, and after the auxiliary heating-first-zone heater 2 (30) is heated for a period of time, when the actual temperature is higher than the set upper limit of the heating-first-zone temperature, the solid-state relays 4 (8), 5 (9) and 3 (7) are switched off, The solid state relay 6 (10) is disconnected, the heating-area auxiliary heater 2 (30) stops heating, the heating-area auxiliary heater 2 (30) is started after cooling for a period of time, when the actual temperature is lower than the heating-area upper temperature limit, the solid state relay 4 (8), the solid state relay 5 (9), the solid state relay 6 (10) are connected, the heating-area auxiliary heater 2 (30) is started, after a period of time, if the temperature is lower than the heating-area set lower temperature limit, the solid state relay 1 (5), the solid state relay 2 (6) and the solid state relay 3 (7) are connected, the heating-area main heater 1 (29) is started, if the temperature is higher than the heating-area set upper temperature limit, the solid state relay 4 (8), the solid state relay 5 (9), the solid state relay 6 (10) are disconnected, the heating-area auxiliary heater 2 (30) stops heating, the temperature sensors 1 (23), 2 (24), the temperature sensors 3 (25), Data collected by the temperature sensor 4 (26) is input into a PLC Siemens S7-200 SMART analog quantity input module through a cable, and control signals are output by the PLC Siemens S7-200 SMART to control the on-off of the solid-state relays 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11), 8 (12), 9 (13), 10 (14), 11 (15), 12 (16), 13 (17), 14 (18), 15 (19), 16 (20), 17 (21) and 18 (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122936148.4U CN216482148U (en) | 2021-11-27 | 2021-11-27 | Intelligent temperature control device of hot-blast stove of cotton and fruit drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122936148.4U CN216482148U (en) | 2021-11-27 | 2021-11-27 | Intelligent temperature control device of hot-blast stove of cotton and fruit drying machine |
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| Publication Number | Publication Date |
|---|---|
| CN216482148U true CN216482148U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122936148.4U Active CN216482148U (en) | 2021-11-27 | 2021-11-27 | Intelligent temperature control device of hot-blast stove of cotton and fruit drying machine |
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| CN (1) | CN216482148U (en) |
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- 2021-11-27 CN CN202122936148.4U patent/CN216482148U/en active Active
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