CN115371367A - Heat cyclic utilization's medicinal material drying device - Google Patents

Abstract

The invention provides a medicinal material drying device capable of recycling heat, and relates to the technical field of air conditioning machinery. This heat cyclic utilization's medicinal material is dried device, including novel shell, the inboard upper portion fixedly connected with centrifugal fan of novel shell, centrifugal fan's top fixedly connected with wind channel plate, the inboard middle part fixedly connected with heater of novel shell, the inboard bottom fixedly connected with motor of novel shell, the equal fixedly connected with guide plate in the left and right sides of motor. Through the effect principle of last air inlet and lower return air, stay in the roof hot-air and indoor cold air in the stoving room effectively and circulate fast, not only energy-conservation but also improve heat utilization rate, the amount of wind that will produce simultaneously can improve the range effectively and jet out under the effect such as air duct board, water conservancy diversion piece for the wind speed, secondly, this drying device is vertical installation, can stably lay subaerial, and the structure is succinct, and the outward appearance is effectual.

Description

A medicinal material drying device for heat recycling

technical field

The invention relates to the technical field of air-conditioning machinery, in particular to a medicinal material drying device for heat recycling.

Background technique

Drying of medicinal materials is an important step to remove the moisture in medicinal materials under the premise of ensuring the medicinal properties of medicinal materials, thereby preventing the occurrence of mildew and deterioration of medicinal materials. In the prior art, the measures for drying medicinal materials are usually heating and drying methods or sun exposure. The heating and drying method mainly includes heating and drying the medicinal materials at the temperature generated by burning coal, fuel oil and other fuels, or heating and drying the medicinal materials by means of electric heating, while The sun-drying method is mainly to distribute the medicinal materials evenly on the ground, and use sunlight to remove the water in them. At the same time, attention should be paid to turning them in time to make the water distribution on the front and back of the medicinal materials unbalanced.

There are two traditional drying methods. The heating drying method is easy to waste fuel and pollute the environment, and it is impossible to reuse the dissipated heat. The solar drying method requires a long cycle time and cannot make the medicinal materials achieve rapid drying. Purpose, at the same time, in daily life, some medicinal materials and other similar medicinal materials such as chemicals containing acid and alkali components must be used in a very dry state when they need to be dried. If they are allowed to dry naturally, it will take time and effort, so , in order to quickly dry medicines and other similar items, there is a need for a medicinal material drying device that can realize heat recycling and can be quickly dried on the market.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a medicinal material drying device for heat recycling, which solves the problems that the traditional medicinal material drying equipment has a complex structure and cannot effectively quickly dry the required drying items.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a medicinal material drying device for heat recycling, including a new type of shell, the upper part of the inner side of the new type of shell is fixedly connected with a centrifugal fan, and the top of the centrifugal fan is fixed An air channel plate is connected, a heater is fixedly connected to the inner middle part of the novel housing, a motor is fixedly connected to the inner bottom end of the novel housing, and deflectors are fixedly connected to the left and right sides of the motor.

Preferably, the middle part of the front end of the novel housing is fixedly connected with an air inlet, and the right side of the lower part of the front end of the new housing is fixedly connected with an air outlet.

Preferably, the new shell is riveted by a square tube welded frame and an anti-corrosion cold-rolled plate.

A method for drying medicinal materials by heat recycling, comprising the following steps:

Step 1. First connect the air outlet of the drying chamber to the air inlet of the drying unit, and then put the medicinal materials into the drying device for drying treatment;

Step 2. During the drying process of medicinal materials, the hot air trapped in the roof of the drying room first enters the centrifugal fan through the air inlet of the drying unit, circulates quickly through the centrifugal fan, and uses the air duct plate to adjust the direction of the hot air to make the hot air Downward movement, the downward movement of the wind is heated by the heater in the open state, the moisture in it is transpired, the heated and dried hot air passes through the deflector, and finally is discharged through the air outlet;

Step 3: The air discharged from the air outlet is transported to the drying room. During this process, the air is continuously cooled, and finally enters the drying room, and acts on the medicinal materials again to speed up the drying rate of the medicinal materials. At the same time, the air stays in the drying room The hot air on the roof also repeats the process of step two, quickly circulating the hot air on the roof and the cold indoor air in the drying room.

Preferably, in the second step, the motors of the drying unit are directly connected; the centrifugal fan adopts a multi-blade centrifugal fan.

Preferably, in the second step, the heater can be heated by various heaters such as ordinary finned heaters, stainless steel finned heaters, and PTC ceramic heaters according to the different drying conditions required by the whole machine.

Preferably, in said step 2, the structural design of the deflector is based on the principles of fluid mechanics, and the three-dimensional model of the deflector is established in the three-dimensional modeling software SolidWorks according to the fan type line diagram, and the basic principles of fluid mechanics and computational fluid dynamics are used. Based on the relevant knowledge, the calculation domain is reasonably set in the numerical simulation software Fluent, and according to the characteristics of the research object and on the basis of the laboratory hardware, a targeted grid division method is proposed to calculate the boundary conditions to be added After the fluid dynamics Johnson-cook equation is calculated, the wind load coefficient at different angles is calculated by the numerical simulation method of computational fluid dynamics, and compared with the wind load coefficient estimated by the Isherwood empirical formula, the following calculation formula is used:

Among them, N represents the mass of combustion air, according to the law of conservation of mass, η represents the molar mass, and the continuity equation of Euler's method can be deduced; according to the momentum theorem, when N is 100 and η is 0.98, the best value can be deduced from Euler The included angle of the air outlet duct plate in the calculation formula of the normal momentum equation is α = 135°, and the height-width-span ratio

The invention provides a medicinal material drying device for heat recycling. Has the following beneficial effects:

1. Through the reasonable structural design of the drying unit and the principle of upward air intake and downward return air, the present invention can effectively circulate the hot air trapped in the roof and the cold indoor air in the drying room quickly, which is energy-saving and environmentally friendly, and can also increase heat utilization rate.

2. The present invention rationally arranges the internal structure of the drying unit. The upper part is equipped with a multi-wing centrifugal fan and air duct plate, the heater is arranged in the middle, and the deflectors and the lower point motor are arranged on both sides of the lower part. The internal structure of the entire drying unit can effectively increase the range of the generated air volume and accelerate the wind speed under the action of the air channel plate and the deflector.

3. In the present invention, a new type of shell formed by riveting a square tube welding frame and an anti-corrosion cold-rolled plate is used as external protection. Its three-dimensional shape is more convenient for vertical installation and can be placed stably on the ground. It has a simple structure and a good appearance .

Description of drawings

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is a side view sectional view of the present invention;

Fig. 4 is the bottom view of the present invention;

Fig. 5 is a top view of the present invention.

Among them, 1. New shell; 2. Centrifugal fan; 3. Air duct plate; 4. Air inlet; 5. Heater; 6. Deflector; 7. Air outlet; 8. Motor.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example:

As shown in Figures 1-5, the embodiment of the present invention provides a medicinal material drying device for heat recycling, which includes a new casing 1, a centrifugal fan 2 is fixedly connected to the inner upper part of the new casing 1, and the top of the centrifugal fan 2 is fixedly connected to There is an air duct plate 3, a heater 5 is fixedly connected to the inner middle part of the novel housing 1, a motor 8 is fixedly connected to the inner bottom end of the novel housing 1, and a deflector 6 is fixedly connected to the left and right sides of the motor 8.

A deflector 6, a heater 5, and an air channel plate 3 are installed on both sides of the new casing 1, the centrifugal fan 2, and the motor 8 to form a reasonable air cavity and a relatively high air pressure during work. At the same time, the drying machine adopts this structure The unit has larger air volume, high heat utilization rate and faster cycle, low noise and corrosion resistance.

The middle part of the front end of the novel housing 1 is fixedly connected with an air inlet 4 , and the right side of the lower front end of the novel housing 1 is fixedly connected with an air outlet 7 .

The new shell 1 is riveted by a square tube welded frame and an anti-corrosion cold-rolled plate.

An embodiment of the present invention provides a method for drying medicinal materials with heat recycling, comprising the following steps:

Step 1. First connect the air outlet of the drying chamber to the air inlet 4 of the drying unit, and then put the medicinal materials into the drying device for drying treatment;

Step 2: During the process of drying medicinal materials, the hot air trapped in the roof of the drying room first enters the centrifugal fan 2 through the air inlet 4 of the drying unit, circulates quickly through the centrifugal fan 2, and uses the air channel plate 3 to adjust the wind direction of the hot air , so that the hot air moves downward, the downward moving wind is heated by the heater 5 in the open state, the moisture in it is transpired, the heated and dried hot air passes through the deflector 6, and finally is discharged through the air outlet 7;

Step 3: The air discharged from the air outlet 7 is then transported to the drying room. During this process, the air is continuously cooled, and finally enters the drying room, and acts on the medicinal materials again to speed up the drying rate of the medicinal materials. At the same time, the air stays in the drying room The process of step 2 is also repeated on the hot air on the roof, and the hot air trapped in the roof and the cold indoor air in the drying room are quickly circulated.

In step 2, the motor of the whole machine in the drying unit is directly connected; the centrifugal fan 2 adopts a multi-blade centrifugal fan. The multi-blade centrifugal fan has stable performance, large air volume, high air pressure, small vibration and low noise.

In step 2, the heater 5 can be heated by various heaters 5 such as ordinary finned heaters, stainless steel finned heaters, and PTC ceramic heaters according to different drying conditions required by the whole machine.

In step 2, the structural design of the deflector 6 is based on the principle of fluid mechanics, and the three-dimensional model of the deflector 6 is established in the three-dimensional modeling software SolidWorks according to the fan type line diagram, and the basic principles of fluid mechanics and relevant knowledge of computational fluid dynamics are used. , the calculation domain is reasonably set in the numerical simulation software Fluent, and according to the characteristics of the research object and on the basis of the laboratory hardware, a targeted grid division method is proposed to calculate the boundary conditions and fluid dynamics that are selected to be added. After learning the Johnson-cook equation, the wind load coefficient at different angles is calculated by the numerical simulation method of computational fluid dynamics, and compared with the wind load coefficient estimated by the Isherwood empirical formula, the following calculation formula is used:

Among them, N represents the mass of combustion air, according to the law of conservation of mass, η represents the molar mass, and the continuity equation of Euler's method can be deduced; according to the momentum theorem, when N is 100 and η is 0.98, the best value can be deduced from Euler The angle α=135° of the air duct plate 3 of the air outlet 7 in the calculation formula of the normal momentum equation, and the height-width-span ratio

Compared with ordinary drying equipment, the drying unit designed by the above calculation formula has a deflector 6 installed in the shell of the whole machine, and there is no special deflector 6 structure inside the conventional heating unit, and the whole machine adopts a special motor 8 And a reasonable deflector 6 structure can effectively increase the range and increase the wind pressure. Secondly, due to the extremely high temperature in the drying chamber, the ordinary motor 8 cannot adapt to the high temperature environment and is easily damaged. Through the multi-blade centrifugal fan 2 and the deflector 6 cooperate to prevent the motor 8 from being in a high-temperature environment, thereby prolonging the service life of the motor 8.

Through the above calculation formula, using this air outlet form, special material heating device, multi-wing centrifugal fan and deflector 6, a total of two sets of comparative tests were done:

The first group of tests: when both the ordinary drying unit and the optimized structure drying unit are 10kW, after 10 minutes of starting up, the temperature difference between the inlet and outlet air of the ordinary dryer unit is 48°C, and the temperature difference between the inlet and outlet air of the optimized structure dryer unit is 67°C;

The second group of tests: under the condition of variable power between ordinary drying unit and optimized structure drying unit, when the temperature difference between the inlet and outlet air of the ordinary dryer unit reaches 50°C, the heating power is 11kW, and the temperature difference between the inlet and outlet air of the optimized structure dryer unit reaches 50°C ℃, the heating power is 7.8kW,

From this, the following conclusions can be drawn: first, the heating capacity of the optimized structure drying unit is far greater than that of the ordinary drying unit; second, the energy saving effect of the optimized structure drying unit and the ordinary drying unit is 30%, and the drying time is greatly shortened.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a medicinal material drying device of heat cyclic utilization, includes novel shell (1), its characterized in that: novel shell (1) inboard upper portion fixedly connected with centrifugal fan (2), the top fixed connection of centrifugal fan (2) has wind channel board (3), the inboard middle part fixedly connected with heater (5) of novel shell (1), the inboard bottom fixedly connected with motor (8) of novel shell (1), the equal fixedly connected with guide plate (6) of side about motor (8).

2. The medicinal material drying device capable of recycling heat according to claim 1, which is characterized in that: the novel shell (1) is characterized in that an air inlet (4) is fixedly connected to the middle of the front end of the novel shell (1), and an air outlet (7) is fixedly connected to the middle of the lower portion of the front end of the novel shell (1) on the right side.

3. The medicinal material drying device capable of recycling heat according to claim 1, which is characterized in that: the novel shell (1) is formed by riveting a square tube welding frame and an anti-corrosion cold-rolled sheet.

4. A medicinal material drying method for recycling heat is characterized in that: the method comprises the following steps:

firstly, communicating an air outlet of a drying chamber with an air inlet of a drying unit, and then putting medicinal materials into a drying device for drying treatment;

step two, hot air staying on a roof in a drying chamber in the medicinal material drying process firstly enters a centrifugal ventilator through an air inlet of a drying unit, the hot air circulates rapidly through the centrifugal ventilator, the wind direction of the hot air is adjusted by an air duct plate, the hot air moves downwards, the wind force moving downwards is heated by a heater in an open state to transpire moisture in the hot air, and the heated and dried hot air is discharged through a guide plate and an air outlet;

and step three, the air discharged from the air outlet is transmitted to the drying chamber again, in the process, the air is continuously cooled and cooled, finally enters the drying chamber and acts on the medicinal materials again, the drying speed of the medicinal materials is accelerated, meanwhile, the flow of the step two is repeated when the hot air is retained on the roof in the subsequent drying chamber, and the hot air retained on the roof in the drying chamber and the cold air in the drying chamber are quickly circulated.

5. The drying method of the medicinal materials with heat recycling according to claim 4, which is characterized in that: in the second step, a complete machine motor in the drying unit is directly connected; the centrifugal ventilator adopts a multi-wing type centrifugal ventilator.

6. The drying method of the medicinal materials with heat recycling according to claim 4, which is characterized in that: in the second step, the heater can select various heaters such as a common fin heater, a stainless steel fin heater, a PTC ceramic heater and the like for heating according to different drying conditions required by the whole machine.

7. The drying method of the medicinal materials with heat recycling according to claim 4, which is characterized in that: in the second step, the structural design of the guide plate is based on the fluid mechanics principle, a three-dimensional model of the guide plate is established in three-dimensional modeling software SolidWorks according to a fan-shaped line graph, a calculation domain is reasonably set in numerical simulation software Fluent by utilizing the fluid mechanics basic principle and relevant knowledge of computational fluid mechanics, a targeted grid division method is provided according to the characteristics of a research object and on the basis of laboratory hardware, wind load coefficients at different angles are calculated by a computational fluid mechanics numerical simulation method after selectively added boundary conditions and a fluid dynamics Johnson-hook equation are calculated, and are compared and analyzed with the wind load coefficients estimated by an Isherwood empirical formula, and the following calculation formula is adopted:

wherein N represents the mass of combustion air, eta represents molar mass according to the mass conservation law, and a continuous equation of an Eulerian method can be deduced; according to the momentum theorem, when N is 100 and eta is 0.98, the optimal value is obtained, the included angle alpha =135 degrees of the air outlet air duct plate and the high-width span ratio of the calculation formula of the Eulerian momentum equation can be deduced

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