Static room type dryer automatic moisture control system

Abstract

The utility model provides an automatic moisture exhaust control system of static house type dryer, including exhaust fan, top temperature and humidity sensor, bottom temperature and humidity sensor, cylinder, touch -sensitive screen, PLC controller, AC contactor, the time setting module is loaded in touch -sensitive screen, the time setting module includes start -up unit and shutdown unit, and all are connected with PLC controller electrically, PLC controller is connected with AC contactor electrically, AC contactor is connected with exhaust fan, cylinder respectively electrically, PLC controller is connected with top temperature and humidity sensor, bottom temperature and humidity sensor and cylinder respectively electrically, the utility model discloses a top, bottom temperature and humidity sensor are set up respectively in dryer, and the data of real -time response are obtained then according to the humidity, temperature difference of dryer top and bottom, and the automatic switch of cylinder action and exhaust exhaust fan is controlled, thereby solves the problem of energy waste and economic loss caused by exhaust fan continuous work.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, specifically to an automatic dehumidification control system for a static chamber dryer. Background Technology

[0002] In recent years, a new type of static chamber dryer has rapidly gained market share in the grain drying industry due to its excellent grain drying efficiency and relatively low breakage rate. It uses the detection of internal humidity to control the continuous intake of hot air to achieve grain drying. However, in actual use, users have found that the hot air entering the dryer and the moisture generated during grain drying are quickly expelled from the dryer by the exhaust fan at the top. This necessitates a continuous intake of large amounts of hot air, resulting in significant energy waste and economic losses. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this invention is to provide an automatic dehumidification control system for a static chamber dryer, solving the problem of energy waste and economic losses caused by the continuous operation of the dehumidification fan.

[0004] This utility model is achieved through the following technical solution:

[0005] An automatic dehumidification control system for a static chamber dryer includes a dehumidification fan, a top temperature and humidity sensor, a bottom temperature and humidity sensor, a cylinder, a touch screen, a PLC controller, and an AC contactor. The touch screen is equipped with a time setting module, which includes a start-up unit and a stop unit, both electrically connected to the PLC controller. The PLC controller is electrically connected to the AC contactor, which is electrically connected to the dehumidification fan and the cylinder, respectively. The PLC controller is also electrically connected to the top and bottom temperature and humidity sensors and the cylinder, respectively. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches a set value, the PLC controller controls the AC contactor to engage. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches another set value, the PLC controller controls the AC contactor to disengage.

[0006] Preferably, when the temperature difference between the top temperature and humidity sensor and the bottom temperature and humidity sensor reaches between 50°C and 70°C or the humidity difference reaches not less than 15°C, the PLC controller controls the AC contactor to engage. When the temperature and humidity difference between the top temperature and humidity sensor and the bottom temperature and humidity sensor approaches 0, the PLC controller controls the AC contactor to disengage.

[0007] Preferably, the power-on unit is manually set to 10 minutes and the power-off unit is manually set to 3 minutes via the touchscreen.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] This invention solves the problem of energy waste and economic loss caused by continuous operation of the dehumidification fan by installing top and bottom temperature and humidity sensors on the top and bottom of the dryer, respectively. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the automatic dehumidification control system for the static chamber dryer of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the cylinder and dehumidifying fan of this utility model located on the dryer. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0015] like Figure 1An automatic dehumidification control system for a static chamber dryer was designed, including a dehumidification fan, a top temperature and humidity sensor, a bottom temperature and humidity sensor, a cylinder, a touch screen, a PLC controller, and an AC contactor. The touch screen is loaded with a time setting module, which includes a start-up unit and a stop unit, both of which are electrically connected to the PLC controller. The PLC controller is electrically connected to the AC contactor, and the AC contactor is electrically connected to the dehumidification fan and the cylinder, respectively. The PLC controller is also electrically connected to the top temperature and humidity sensor, the bottom temperature and humidity sensor, and the cylinder, respectively. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches a set value, the PLC controller controls the AC contactor to engage. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches another set value, the PLC controller controls the AC contactor to disengage.

[0016] The minimum setpoint for the temperature difference between the top and bottom temperature and humidity sensors is 50℃, and the maximum setpoint is 70℃. The default operating temperature is 55℃. The humidity difference between the two sensors is set to be no less than 15%. When this is the case, the PLC controller receives a signal and controls the AC contactor to engage. The contactor then controls the corresponding dehumidifying fan to start, and the cylinder retracts. Upon receiving a signal, the cylinder automatically pushes the baffle to completely cover the exhaust port, and the dehumidifying fan simultaneously shuts down. When the temperature and humidity difference between the top and bottom sensors approaches zero, the PLC controller receives a signal and controls the AC contactor to disengage. The contactor then controls the corresponding dehumidifying fan to stop, and the cylinder extends. The cylinder automatically pulls out the baffle at the exhaust port, and the dehumidifying fan simultaneously turns on to expel the accumulated hot and humid air. This cycle repeats, effectively solving the energy waste and economic losses caused by continuous dehumidifying operation.

[0017] The dehumidifier fan cycles on and off according to a set time. The on-time setting can be manually set to 10 minutes, and the off-time setting to 3 minutes via the touchscreen, repeating this cycle. The specific time can be freely set by inputting parameters into the time setting module using the touchscreen.

[0018] The working principle of this utility model:

[0019] When the dryer starts working, the cylinder and exhaust fan are in the off state. At this time, the temperature and humidity sensors installed at the top and bottom of the dryer start working simultaneously, continuously detecting the humidity and temperature at the top and bottom, and then transmitting the detected data to the automatic dehumidification control system. After the humidity and temperature difference between the top and bottom reaches the set value, the automatic dehumidification control system sends a signal to the cylinder and exhaust fan to open them, thus expelling the moisture from the top of the dryer. When the humidity and temperature difference between the top and bottom approaches 0 or reaches the set value, the automatic dehumidification control system sends a signal to the cylinder and exhaust fan to close them.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic dehumidification control system for a static chamber dryer, characterized in that: The device includes a dehumidifying fan, a top temperature and humidity sensor, a bottom temperature and humidity sensor, a cylinder, a touch screen, a PLC controller, and an AC contactor. The touch screen has a time setting module, which includes a start-up unit and a stop unit, both electrically connected to the PLC controller. The PLC controller is electrically connected to the AC contactor, which is electrically connected to the dehumidifying fan and the cylinder, respectively. The PLC controller is also electrically connected to the top and bottom temperature and humidity sensors and the cylinder, respectively. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches a set value, the PLC controller controls the AC contactor to engage. When the temperature and humidity difference between the top and bottom temperature and humidity sensors reaches another set value, the PLC controller controls the AC contactor to disengage.

2. The automatic dehumidification control system for a static chamber dryer according to claim 1, characterized in that: When the temperature difference between the top and bottom temperature and humidity sensors reaches 50℃-70℃ or the humidity difference reaches not less than 15℃, the PLC controller controls the AC contactor to engage. When the temperature and humidity difference between the top and bottom temperature and humidity sensors approaches 0, the PLC controller controls the AC contactor to disengage.

3. The automatic dehumidification control system for a static chamber dryer according to claim 1, characterized in that: The power-on unit can be manually set to 10 minutes via the touchscreen, and the power-off unit can be manually set to 3 minutes.

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