CN219531555U - Temperature control blast drying device - Google Patents
Temperature control blast drying device Download PDFInfo
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- CN219531555U CN219531555U CN202320482890.9U CN202320482890U CN219531555U CN 219531555 U CN219531555 U CN 219531555U CN 202320482890 U CN202320482890 U CN 202320482890U CN 219531555 U CN219531555 U CN 219531555U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model provides a temperature-control blast drying device, which comprises: a drying chamber; the reticular conveying belt is arranged in the drying chamber and is connected with the front-end conveying belt and the rear-end conveying belt; the heating box is communicated with the drying chamber; the first air guide fan is connected with the air inlet end of the heating box; the air drying box is connected with the first air guide fan, and the air inlet end of the air drying box is connected with an air inlet pipe; the second air guide fan is communicated with the drying chamber and the air drying box; the first fan temperature control circuit is used for reversely controlling the rotating speed of the first fan according to the temperature of the drying chamber; and the second fan temperature control circuit is used for positively controlling the rotating speed of the second air guide fan according to the temperature of the drying chamber. The rotating speed of the first air guide fan is reversely controlled by the first fan temperature control circuit according to the temperature of the drying chamber, namely, the higher the temperature is, the lower the rotating speed is; the rotating speed of the second air guide fan is positively controlled by the temperature control circuit of the second air guide fan according to the temperature of the drying chamber, namely, the higher the temperature is, the higher the rotating speed is; finally, temperature control is realized by controlling the rotating speed of the fan.
Description
Technical Field
The utility model relates to the technical field of temperature-control forced air drying, in particular to a temperature-control forced air drying device.
Background
Each part of the Taxus media plant contains taxol, the branch and leaf content is more than 0.03%, the root system part can reach 0.06%, the whole plant is used for extracting taxol, the plant utilization rate is high, the comprehensive economic value is higher after the plant is deeply processed, and the Taxus media bacteriostat is a raw material.
Extracting paclitaxel and taxine as effective components from Taxus media to obtain Taxus extract, and adding matrine, osthole and Scutellariae radix extract as antibacterial substances to obtain antibacterial effect. The technical route of the process is generally as follows:
1. screening raw materials: determining the production place, harvesting season and growth age of Taxus media;
2. pretreatment of raw materials: picking the collected raw materials, cutting the raw materials into sections by a rotary-cut medicine cutting machine, drying the raw materials at a low temperature by a hot air circulation drying box, packaging the dried raw materials according to specified specifications, and checking;
3. extracting: putting the qualified raw materials into a multifunctional extraction tank, and adding a certain solvent for extraction;
4. concentrating: concentrating the extractive solution to obtain concentrated solution;
5. purifying: purifying the concentrated solution by a certain method to remove impurities therein, thereby improving the clarity of the liquid medicine and the stability of the effective components;
6. and (3) batching: adding certain screened antibacterial substances and substances for regulating drug stability into the liquid medicine.
In the pretreatment of raw materials, a hot air circulation drying box is needed, but a common drying box has few functions of realizing automatic temperature control, and the power of a heating device is controlled according to the temperature in the drying box so as to realize the control of the temperature; and the temperature control is realized by controlling the rotating speed of the fan; thus, a temperature controlled forced air drying device is provided.
Disclosure of Invention
The utility model provides a temperature control blast drying device which can realize an automatic temperature control function, realizes temperature control by controlling the rotating speed of a fan, meets the requirements of the process, at least provides more choices for the process, and provides a novel drying box scheme.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a temperature controlled forced air drying apparatus comprising:
a drying chamber;
the net-shaped conveying belt is arranged in the drying chamber, the conveying front end of the net-shaped conveying belt is used for being connected with the front-end conveying belt so as to convey raw materials to be dried into the drying chamber, and the conveying rear end of the net-shaped conveying belt is used for being connected with the rear-end conveying belt so as to convey the dried raw materials out of the drying chamber;
the air outlet end of the heating box is communicated with the drying chamber;
the air outlet end of the first air guide fan is connected with the air inlet end of the heating box;
the air outlet end of the air drying box is connected with the air inlet end of the first air guide fan, and the air inlet end of the air drying box is connected with an air inlet pipe;
the air inlet end of the second air guide fan is connected with the drying chamber, and the air outlet end of the second air guide fan is communicated with the air drying box;
the first fan temperature control circuit is used for reversely controlling the rotating speed of the first fan according to the temperature of the drying chamber;
and the second fan temperature control circuit is used for positively controlling the rotating speed of the second air guide fan according to the temperature of the drying chamber.
In one embodiment of the disclosure, the first fan temperature control circuit includes a positive temperature coefficient thermistor Rt1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a zener diode VD1, a thyristor VT1, a motor M1, and a time base chip IC1;
the positive temperature coefficient thermistor Rt1 has one end connected to the positive electrode of the capacitor C1 and one end of the resistor R4 and then connected to the external voltage terminal +12V, the other end of the positive temperature coefficient thermistor Rt1 is connected to the negative electrode of the capacitor C1, one end of the resistor R1 and the pin 5 of the time base chip IC1, the other end of the resistor R4 is connected to one end of the resistor R2, one end of the resistor C3, the negative electrode of the zener diode VD1, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C3 and the positive electrode of the zener diode VD1 are grounded, the other end of the resistor R2 is connected to one end of the resistor R3 and the pin 7 of the time base chip IC1, the other end of the resistor R3 is connected to one end of the capacitor C2, the pin 6 of the time base chip IC1 and the pin 2, the other end of the resistor R5 is connected to the electrode of the thyristor VT1, the motor thyristor T2 is connected to the other end of the thyristor VT1, and then connected to the other end of the resistor C1 and the other end of the time base chip IC1, and then connected to the other end of the resistor C1 and the end of the thyristor 220.
In one embodiment of the disclosure, the second fan temperature control circuit includes a negative temperature coefficient thermistor Rt2, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a zener diode VD2, a thyristor VT2, a motor M2, and a time base chip IC2;
one end of the negative temperature coefficient thermistor Rt2 is connected with the positive electrode of the capacitor C4 and one end of the resistor R9 and then is externally connected with a voltage end +12V, the other end of the negative temperature coefficient thermistor Rt2 is connected with the negative electrode of the capacitor C4, one end of the resistor R6 and a pin 5 of the time base chip IC2, the other end of the resistor R9 is connected with one end of the resistor R7, one end of the resistor C6, the negative electrode of the zener diode VD2, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C6 and the positive electrode of the zener diode VD2 are grounded, the other end of the resistor R7 is connected with one end of the resistor R8 and the pin 7 of the time base chip IC2, the other end of the resistor R8 is connected with one end of the capacitor C5, the pin 6 of the time base chip IC2 and the pin 2, the other end of the resistor R10 is connected with the electrode of the thyristor VT2, the other end of the motor thyristor T2 is connected with the other end of the time base chip IC2, and the other end of the voltage end of the thyristor VT2 is connected with the end of the resistor C2 and then is externally connected with the other end of the resistor C2, and then is externally connected with the end of the resistor C2V 2.
In one embodiment of the present disclosure, the time-base chip IC1 and the time-base chip IC2 are both NE555.
In one embodiment of the present disclosure, the desiccant in the air dryer is a chemical desiccant or a physical desiccant.
In one embodiment of the present disclosure, the physical desiccant is silica gel or activated alumina.
In one embodiment of the present disclosure, the chemical desiccant is calcium sulfate or calcium chloride.
In one embodiment of the disclosure, the mesh conveyor belt includes a conveyor belt body and a baffle plate, where the baffle plate is disposed around a conveying surface of the conveyor belt body to surround the conveying surface of the conveyor belt body; the conveying rear end of the front-end conveying belt penetrates through the baffle plate and is in conveying connection with the conveying front end of the conveying belt main body so as to convey raw materials to be dried into the drying chamber; a space is reserved between the conveying rear end of the conveying belt main body and the baffle plate so as to form a blanking port; the conveying front end of the rear-end conveying belt is positioned below the blanking port so as to convey the dried raw materials out of the drying chamber.
In one embodiment of the disclosure, the mesh conveyor belt further includes a protection plate, and the protection plate is disposed on an upper end surface of the protection plate.
In one embodiment of the utility model, a plurality of electric heating pipes which are uniformly distributed up and down and are horizontally arranged are arranged in the heating box.
In summary, the utility model has at least the following advantages:
according to the utility model, the rotating speed of the first air guide fan is reversely controlled by the first fan temperature control circuit according to the temperature of the drying chamber, namely, the higher the temperature is, the lower the rotating speed is; the rotating speed of the second air guide fan is positively controlled by the temperature control circuit of the second air guide fan according to the temperature of the drying chamber, namely, the higher the temperature is, the higher the rotating speed is; when the temperature of the drying chamber is too high, the ventilation quantity of hot air is reduced, the discharge quantity of the hot air is increased, and the temperature is further reduced; conversely, when the temperature of the drying chamber is too low, the ventilation quantity of hot air is increased, the discharge quantity of the hot air is reduced, and the temperature is further increased; finally, the temperature control is realized by controlling the rotating speed of the fan, and the alternative drying scheme is provided when the process requirement is met, namely, a novel drying box scheme is provided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a temperature-controlled blast drying apparatus according to some embodiments of the present utility model.
Fig. 2 is a circuit schematic diagram of a first fan temperature control circuit according to some embodiments of the present utility model.
FIG. 3 is a circuit schematic of a second fan temperature control circuit according to some embodiments of the present utility model.
Fig. 4 is a schematic top view of a mesh conveyor belt according to some embodiments of the utility model.
Fig. 5 is a schematic perspective view of a mesh conveyor belt according to some embodiments of the present utility model.
Reference numerals:
1. a drying chamber;
2. a mesh conveyor belt; 21. a conveyor belt body; 22. a baffle; 23. a blanking port; 24. a driving motor; 25. a protection plate;
3. a heating box; 31. an electric heating tube;
4. a first air guide machine;
5. an air drying box; 51. an air inlet pipe; 52. a dust filter screen;
6. a second air guide machine; 7. a front end conveyor belt; 8. a rear end conveyor belt; 9. a pipe; 10. and (5) supporting the rod.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a temperature-controlled blast drying apparatus includes:
a drying chamber 1;
a mesh conveyor belt 2 disposed in the drying chamber 1 and having a conveying front end for connecting with the front end conveyor belt 7 to convey the raw material to be dried into the drying chamber 1 and a conveying rear end for connecting with the rear end conveyor belt 8 to convey the dried raw material out of the drying chamber 1;
the air outlet end of the heating box 3 is communicated with the drying chamber 1;
the air outlet end of the first air guide fan 4 is connected with the air inlet end of the heating box 3;
the air drying box 5 is connected with the air inlet end of the first air guide fan 4 at the air outlet end thereof, and is connected with an air inlet pipe 51 at the air inlet end thereof;
the air inlet end of the second air guide fan 6 is connected with the drying chamber 1, and the air outlet end of the second air guide fan is communicated with the air drying box 5;
the first fan temperature control circuit is used for reversely controlling the rotating speed of the first air guide fan 4 according to the temperature of the drying chamber 1;
and the second fan temperature control circuit is used for positively controlling the rotating speed of the second air guide fan 6 according to the temperature of the drying chamber 1.
It should be understood that the first fan temperature control circuit and the second fan temperature control circuit may adopt conventional schemes, and may also adopt schemes of the following embodiments; the front end conveyor belt 7 is the conveyor belt of the previous process, and the rear end conveyor belt 8 is the conveyor belt of the next process.
The working process is as follows:
starting the mesh conveyor belt 2, the heating box 3, the first air guide fan 4, the second air guide fan 6, the first air guide fan temperature control circuit and the second air guide fan temperature control circuit; the first air guide fan 4 extracts air in the air drying box 5 and introduces the air into the heating box 3, so that external air enters the air drying box 5 through the air inlet pipe 51, and the air inlet pipe 51 can be provided with a dust filter screen 52 to filter dust of the entering air; the heating cabinet 3 heats the air that gets into, along with constantly having the air to get into, and hot air enters into drying chamber 1, and the air in the second air guide machine 6 extraction drying chamber 1 and lets in air drying cabinet 5, forms hot-blast circulation, effectively prevents simultaneously along with drying time's increase, and the humidity in the drying chamber 1 can constantly improve, and the improvement of humidity can hinder the normal clear of drying operation, and the too high humidity can reduce drying efficiency and drying effect promptly.
Raw materials to be dried are conveyed to the reticular conveyer belt 2 through the front-end conveyer belt 7, the raw materials on the reticular conveyer belt 2 are heated and dried by hot air, and the dried raw materials are conveyed to the rear-end conveyer belt 8 through the reticular conveyer belt 2 and leave the drying chamber 1 to finish drying.
In the drying process, when the temperature of the drying chamber 1 is too high, the first fan temperature control circuit reversely controls the rotating speed of the first air guide fan 4, the rotating speed of the first air guide fan 4 is reduced, the ventilation quantity of hot air is reduced, meanwhile, the second fan temperature control circuit positively controls the rotating speed of the second air guide fan 6, the rotating speed of the second air guide fan 6 is increased, the discharge quantity of hot air is increased, and then the temperature is reduced.
When the temperature of the drying chamber 1 is too low, the first fan temperature control circuit reversely controls the rotating speed of the first air guide fan 4, the rotating speed of the first air guide fan 4 is increased, the ventilation quantity of hot air is increased, meanwhile, the second fan temperature control circuit positively controls the rotating speed of the second air guide fan 6, the rotating speed of the second air guide fan 6 is reduced, the discharge quantity of hot air is reduced, and the temperature is further increased.
It will be appreciated that the above-described transport of air or hot air may be achieved through a duct, and that when the duct is too long, support bars may be used to support the duct.
In some embodiments, as shown in fig. 2, the first fan temperature control circuit includes a positive temperature coefficient thermistor Rt1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a zener diode VD1, a thyristor VT1, a motor M1, and a time base chip IC1; one end of the positive temperature coefficient thermistor Rt1 is connected with the positive electrode of the capacitor C1 and one end of the resistor R4 and then externally connected with a voltage end +12V, the other end of the positive temperature coefficient thermistor Rt1 is connected with the negative electrode of the capacitor C1, one end of the resistor R1 and one end of the time base chip IC1, the other end of the resistor R4 is connected with one end of the resistor R2, one end of the capacitor C3, the negative electrode of the voltage stabilizing diode VD1, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C3 and the positive electrode of the voltage stabilizing diode VD1 are grounded, the other end of the resistor R2 is connected with one end of the resistor R3 and one end of the time base chip IC1, the pin 6 and the pin 2 of the time base chip IC1, the pin 3 of the time base chip IC1 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with the G electrode of the thyristor VT1, the T2 electrode of the thyristor VT1 is connected with one end of the motor M1, the other end of the motor M1 is externally connected with one end of the voltage end 220V, the other end of the resistor R1 is connected with the pin of the capacitor C2 and the time base chip IC1, and the voltage end 220V of the other end of the time base chip IC1 is externally connected with the end of the time base chip 1.
In this embodiment, the time base chip IC1 is a 555 time base circuit, and forms a multivibrator with elements such as a resistor R2, a resistor R3, a capacitor C2, and the like, so as to emit a rectangular wave signal with an adjustable duty ratio. When the temperature changes, the resistance of the positive temperature coefficient thermistor Rt1 changes, the duty ratio of square waves output by the multivibrator is changed, the conduction angle of the thyristor VT1 is adjusted, the voltage at two ends of the motor M1 is changed, and the rotating speed of the first air guide fan 4 is automatically adjusted. When the temperature increases, the resistance of the positive temperature coefficient thermistor Rt1 increases, the duty ratio decreases, the output of the time base chip IC1 decreases, the conduction angle of the thyristor VT1 decreases, the voltage at two ends of the motor M1 decreases, and the rotating speed of the first wind guiding fan 4 decreases. Conversely, when the temperature decreases, the resistance of the ptc thermistor Rt1 decreases, the duty ratio increases, the output of the time base chip IC1 increases, the conduction angle of the thyristor VT1 increases, the voltage across the motor M1 increases, and the rotation speed of the first wind guiding fan 4 increases.
The time base chip IC1 adopts NE555 time base circuit, and can also use model numbers of LM555, TLC555 and the like. The thyristor VT1 is a bidirectional thyristor, the withstand voltage of the thyristor is more than 400V, and the rated current is reasonably selected according to the capacity of the first wind guiding machine 4 to be controlled. The resistors R1-R5 can be common 1/8 or 1/4W carbon film resistors; the positive temperature coefficient thermistor Rt1 can be a thermistor with a resistance value of about 10KΩ at normal temperature. The capacitor C1 is a common aluminum electrolytic capacitor; the capacitor C2 and the capacitor C3 are polyester capacitors. The zener diode VD1 is a zener diode having a voltage stabilizing value of 9.1V.
In some embodiments, as shown in fig. 3, the second fan temperature control circuit includes a negative temperature coefficient thermistor Rt2, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a zener diode VD2, a thyristor VT2, a motor M2, and a time base chip IC2; one end of the negative temperature coefficient thermistor Rt2 is connected with the positive electrode of the capacitor C4 and one end of the resistor R9 and then externally connected with a voltage end +12V, the other end of the negative temperature coefficient thermistor Rt2 is connected with the negative electrode of the capacitor C4, one end of the resistor R6 and one end of the time base chip IC2, the other end of the resistor R9 is connected with one end of the resistor R7, one end of the capacitor C6, the negative electrode of the zener diode VD2, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C6 and the positive electrode of the zener diode VD2 are grounded, the other end of the resistor R7 is connected with one end of the resistor R8 and the pin 7 of the time base chip IC2, the other end of the resistor R8 is connected with one end of the capacitor C5, the pin 6 and the pin 2 of the time base chip IC2, the pin 3 of the time base chip IC2 is connected with one end of the resistor R10, the other end of the resistor R10 is connected with the G pole of the thyristor VT2, the T2 pole of the thyristor VT2 is connected with one end of the motor M2, the other end of the motor M2 is externally connected with one end of the voltage end 220V, the other end of the resistor R6 is connected with the pin of the time base chip IC2 and the other end of the time base chip IC2 and then externally connected with the voltage 220V of the end of the resistor C1.
In this embodiment, the time base chip IC2 is a 555 time base circuit, and forms a multivibrator with elements such as a resistor R7, a resistor R8, a capacitor C5, and the like, so as to emit a rectangular wave signal with an adjustable duty ratio. When the temperature changes, the resistance of the negative temperature coefficient thermistor Rt2 changes, the duty ratio of square waves output by the multivibrator is changed, the conduction angle of the thyristor VT2 is adjusted, the voltage at two ends of the motor M2 is changed, and the rotating speed of the second air guide fan 6 is automatically adjusted. If the temperature increases, the resistance of the negative temperature coefficient thermistor Rt2 decreases, the duty ratio increases, the output of the time base chip IC2 increases, the conduction angle of the thyristor VT2 increases, the voltage at the two ends of the motor M2 increases, and the rotation speed of the second wind guiding fan 6 increases. Conversely, when the temperature is reduced, the resistance of the negative temperature coefficient thermistor Rt2 is increased, the duty ratio is reduced, the output of the time base chip IC2 is reduced, the conduction angle of the thyristor VT2 is reduced, the voltage at two ends of the motor M2 is reduced, and the rotating speed of the second air guide fan 6 is reduced.
The time base chip IC2 is a NE555 time base circuit, and can also use models such as LM555, TLC555 and the like. The thyristor VT2 is a bidirectional thyristor, the withstand voltage of the thyristor should be above 400V, and the rated current should be reasonably selected according to the capacity of the first wind guiding machine 4 to be controlled. The resistors R6-R10 can be common 1/8 or 1/4W carbon film resistors; the negative temperature coefficient thermistor Rt2 can be a thermistor with a resistance value of about 10KΩ at normal temperature. The capacitor C4 is a common aluminum electrolytic capacitor; the capacitor C5 and the capacitor C6 are polyester capacitors. The zener diode VD2 is a zener diode having a voltage stabilizing value of 9.1V.
In some embodiments, the desiccant within the air dryer 5 is a chemical desiccant or a physical desiccant.
In some embodiments, the physical desiccant is silica gel or activated alumina.
In some embodiments, the chemical desiccant is calcium sulfate or calcium chloride.
In some embodiments, as shown in fig. 4 and 5, the mesh conveyor belt 2 includes a conveyor belt body 21 and a baffle 22, the baffle 22 being provided around the conveying surface of the conveyor belt body 21 to surround the conveying surface of the conveyor belt body 21; the conveying rear end of the front-end conveying belt 7 penetrates through the baffle 22 and is in conveying connection with the conveying front end of the conveying belt main body 21 so as to convey raw materials to be dried into the drying chamber 1; a space is arranged between the conveying rear end of the conveying belt main body 21 and the baffle 22 to form a blanking port 23; the conveying front end of the rear end conveying belt 8 is positioned below the blanking port 23 to convey the dried raw material out of the drying chamber 1.
In this embodiment, the baffle 22 can prevent the raw material from falling to a place other than the conveyor belt main body 21, and meanwhile, the baffle 22 and the conveyor belt main body 21 can jointly form a drying cavity with relatively uniform temperature, which is beneficial to drying the raw material; it is clear that the conveyor belt body 21 is provided with a corresponding drive motor 24 and transmission mechanism, which is a conventional solution in the prior art and will not be described here. The conveyor main body 21 may be inclined from top to bottom from the conveying front end to the conveying middle end, and may be horizontally arranged from the conveying middle end to the conveying rear end, as shown in fig. 1.
In some embodiments, the mesh conveyor belt 2 further includes a shielding plate 25, and the shielding plate 25 is provided on an upper end surface of the shielding plate 22.
In this embodiment, the protection plate 25 and the baffle 22 may further form a drying cavity, which is beneficial to drying the raw materials.
In some embodiments, the heating box 3 has a plurality of electric heating pipes 31 disposed horizontally and uniformly arranged therein.
While the above examples describe various embodiments of the present utility model, those skilled in the art will appreciate that various changes and modifications can be made to these embodiments without departing from the spirit and scope of the present utility model, and that such changes and modifications fall within the scope of the present utility model.
Claims (10)
1. A temperature-controlled forced air drying apparatus, comprising:
a drying chamber;
the net-shaped conveying belt is arranged in the drying chamber, the conveying front end of the net-shaped conveying belt is used for being connected with the front-end conveying belt so as to convey raw materials to be dried into the drying chamber, and the conveying rear end of the net-shaped conveying belt is used for being connected with the rear-end conveying belt so as to convey the dried raw materials out of the drying chamber;
the air outlet end of the heating box is communicated with the drying chamber;
the air outlet end of the first air guide fan is connected with the air inlet end of the heating box;
the air outlet end of the air drying box is connected with the air inlet end of the first air guide fan, and the air inlet end of the air drying box is connected with an air inlet pipe;
the air inlet end of the second air guide fan is connected with the drying chamber, and the air outlet end of the second air guide fan is communicated with the air drying box;
the first fan temperature control circuit is used for reversely controlling the rotating speed of the first fan according to the temperature of the drying chamber;
and the second fan temperature control circuit is used for positively controlling the rotating speed of the second air guide fan according to the temperature of the drying chamber.
2. The temperature-controlled blast drying apparatus according to claim 1, wherein the first fan temperature control circuit comprises a positive temperature coefficient thermistor Rt1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a zener diode VD1, a thyristor VT1, a motor M1, and a time base chip IC1;
the positive temperature coefficient thermistor Rt1 has one end connected to the positive electrode of the capacitor C1 and one end of the resistor R4 and then connected to the external voltage terminal +12V, the other end of the positive temperature coefficient thermistor Rt1 is connected to the negative electrode of the capacitor C1, one end of the resistor R1 and the pin 5 of the time base chip IC1, the other end of the resistor R4 is connected to one end of the resistor R2, one end of the resistor C3, the negative electrode of the zener diode VD1, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C3 and the positive electrode of the zener diode VD1 are grounded, the other end of the resistor R2 is connected to one end of the resistor R3 and the pin 7 of the time base chip IC1, the other end of the resistor R3 is connected to one end of the capacitor C2, the pin 6 of the time base chip IC1 and the pin 2, the other end of the resistor R5 is connected to the electrode of the thyristor VT1, the motor thyristor T2 is connected to the other end of the thyristor VT1, and then connected to the other end of the resistor C1 and the other end of the time base chip IC1, and then connected to the other end of the resistor C1 and the end of the thyristor 220.
3. The temperature-controlled blast drying apparatus according to claim 2, wherein the second fan temperature control circuit comprises a negative temperature coefficient thermistor Rt2, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a zener diode VD2, a thyristor VT2, a motor M2, and a time base chip IC2;
one end of the negative temperature coefficient thermistor Rt2 is connected with the positive electrode of the capacitor C4 and one end of the resistor R9 and then is externally connected with a voltage end +12V, the other end of the negative temperature coefficient thermistor Rt2 is connected with the negative electrode of the capacitor C4, one end of the resistor R6 and a pin 5 of the time base chip IC2, the other end of the resistor R9 is connected with one end of the resistor R7, one end of the resistor C6, the negative electrode of the zener diode VD2, the pin 8 and the pin 4 of the time base chip IC1, the other end of the capacitor C6 and the positive electrode of the zener diode VD2 are grounded, the other end of the resistor R7 is connected with one end of the resistor R8 and the pin 7 of the time base chip IC2, the other end of the resistor R8 is connected with one end of the capacitor C5, the pin 6 of the time base chip IC2 and the pin 2, the other end of the resistor R10 is connected with the electrode of the thyristor VT2, the other end of the motor thyristor T2 is connected with the other end of the time base chip IC2, and the other end of the voltage end of the thyristor VT2 is connected with the end of the resistor C2 and then is externally connected with the other end of the resistor C2, and then is externally connected with the end of the resistor C2V 2.
4. A temperature-controlled forced air drying apparatus according to claim 3, wherein the time base chip IC1 and the time base chip IC2 are each NE555 in model number.
5. The temperature controlled forced air drying apparatus of claim 1, wherein the desiccant in the air drying cabinet is a chemical desiccant or a physical desiccant.
6. The temperature controlled forced air drying apparatus of claim 5, wherein the physical desiccant is silica gel or activated alumina.
7. The temperature-controlled forced air drying apparatus according to claim 5, wherein the chemical drying agent is calcium sulfate or calcium chloride.
8. The temperature-controlled blast drying apparatus according to claim 1, wherein the mesh conveyor belt comprises a conveyor belt body and a baffle plate provided around a conveying surface of the conveyor belt body so as to surround the conveying surface of the conveyor belt body; the conveying rear end of the front-end conveying belt penetrates through the baffle plate and is in conveying connection with the conveying front end of the conveying belt main body so as to convey raw materials to be dried into the drying chamber; a space is reserved between the conveying rear end of the conveying belt main body and the baffle plate so as to form a blanking port; the conveying front end of the rear-end conveying belt is positioned below the blanking port so as to convey the dried raw materials out of the drying chamber.
9. The temperature-controlled blast drying apparatus according to claim 8, wherein said mesh conveyor further comprises a protection plate provided on an upper end surface of said baffle plate.
10. The temperature-controlled blast drying device according to claim 1, wherein a plurality of electric heating pipes which are uniformly distributed up and down and are horizontally arranged are arranged in the heating box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320482890.9U CN219531555U (en) | 2023-03-14 | 2023-03-14 | Temperature control blast drying device |
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| CN202320482890.9U CN219531555U (en) | 2023-03-14 | 2023-03-14 | Temperature control blast drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447856A (en) * | 2023-06-09 | 2023-07-18 | 盛胜电子科技(广州)有限公司 | Container type coal low-temperature dryer and drying method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447856A (en) * | 2023-06-09 | 2023-07-18 | 盛胜电子科技(广州)有限公司 | Container type coal low-temperature dryer and drying method |
| CN116447856B (en) * | 2023-06-09 | 2024-05-07 | 盛胜电子科技(广州)有限公司 | Container type coal low-temperature dryer and drying method |
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