Anti-pollution external hot air circulating oven

Abstract

The utility model relates to an anti-pollution external hot air circulating oven which comprises an oven body, a Y-shaped air inlet pipe, a first connecting pipe, a heating oven body, a centrifugal fan, a motor, a heater, a first filter, a moisture discharging piece, an air inlet box, an exhaust pipe and a second connecting pipe. The centrifugal fan, the heater, the filter, the air inlet box and the conveying pipeline are matched with one another, so that air is circularly heated and filtered outside the drying oven, and medicine in the drying oven is prevented from being polluted in the drying process.

Description

Technical Field

[0001] The utility model relates to an anti-pollution external hot air circulation oven. Background Art

[0002] Most existing hot air circulation ovens are closed-circuit internal circulation ovens, meaning that unfiltered and unpurified high-temperature airflow directly circulates in contact with the medicines to be dried. For example, a hot air circulation oven for producing Chinese herbal medicine slices, published as CN118031567 A, comprises an oven body, a control box disposed on the outside of the oven body, a blower disposed on the top of the oven body, air duct baffles disposed on both sides of the oven body, the air duct baffles being in an inverted L-shape, a heating tube disposed between the inner wall of the oven body and the vertical portion of the inverted L-shaped air duct baffle, and a magnetic plate disposed on the side of the air duct baffle away from the heating tube; a circular groove is formed at the bottom of the oven body, a placement groove is formed in the middle of the circular groove, a reduction motor is fixed to the bottom of the placement groove, a tray is fixed to the output end of the reduction motor, and a flip assembly is disposed above the tray. The hot air circulation oven uses a turning component to turn over the Chinese herbal medicine slices, which improves the efficiency of hot air drying of the Chinese herbal medicine slices. However, it directly heats the air inside the box through the heating pipe inside the box, and causes the hot air to circulate directly with the Chinese herbal medicine slices, which poses a certain risk of contamination and cannot meet the standards of drug supervision and management. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] The technical problem to be solved by the utility model is how to prevent the medicines in the drying oven from being contaminated during the drying process.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-pollution external hot air circulation oven, comprising an oven body, a Y-shaped air inlet pipe, a first connecting pipe, a heating box body, a centrifugal fan, a motor, a heater, a first filter, a dehumidification component, an air inlet box, an exhaust pipe and a second connecting pipe, two air inlets are symmetrically provided on both sides of the top of the oven body, an exhaust port is provided in the center of the top of the oven body, the air outlet ends at both ends of the Y-shaped air inlet pipe are respectively connected to the two air inlets, the heating box body is arranged on one side of the oven body, and the air outlet end of the heating box body is connected to the air inlet of the Y-shaped air inlet pipe through the first connecting pipe. The air ends are connected, the centrifugal fan is arranged at the bottom of the heating box body, the motor is arranged on the centrifugal fan, the heater is arranged in the heating box body, and is used to heat the inhaled air, the first filter is arranged at the air outlet end at the top of the heating box body, and is used to filter the heated hot air, the dehumidification component is arranged at the air outlet end of the centrifugal fan, and is used to discharge part of the wet air, the air inlet box is arranged on the back of the baking oven body, the exhaust port of the baking oven body is connected to the air inlet end of the air inlet box through the exhaust pipe, and the air outlet end of the air inlet box is connected to the air inlet end of the centrifugal fan through the second connecting pipe.

[0006] As a preferred solution of the anti-pollution external hot air circulation oven described in the utility model, the dehumidification component includes a dehumidification pipe and a high-efficiency filter, the dehumidification pipe is arranged at the air outlet end of the centrifugal fan, the air inlet end of the dehumidification pipe is connected to the air outlet end of the centrifugal fan, and is used to discharge wet air, and the high-efficiency filter is arranged on the dehumidification pipe to filter the discharged wet air.

[0007] As a preferred solution of the anti-pollution external hot air circulation oven described in the utility model, a first valve is provided at the inlet end of the dehumidification pipe near the high-efficiency filter to prevent external wet air from flowing back to the outlet end of the centrifugal fan.

[0008] As a preferred solution of the pollution-proof external hot air circulation oven of the present invention, a second valve is provided on the first connecting pipe to control the filtered hot air in the first connecting pipe.

[0009] As a preferred solution of the anti-pollution external hot air circulation oven of the utility model, a second filter is provided on the air intake box to filter the external air entering the air intake box.

[0010] As a preferred solution of the anti-pollution external hot air circulation oven of the present invention, a third valve is provided at one end of the exhaust pipe close to the air inlet box to control the humid air in the exhaust pipe to enter the air inlet box.

[0011] As a preferred solution of the pollution-proof external hot air circulation oven of the present invention, a third filter is provided at the air inlet end near the exhaust pipe in the air inlet box to filter the wet air entering the air inlet box.

[0012] Beneficial effect: Through the cooperation between the centrifugal fan, heater, filter, air inlet box and conveying pipe, the air outside the oven is circulated, heated and filtered, thereby preventing the medicines in the oven from being contaminated during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0014] Figure 1 Schematic diagram of the overall structure of an external hot air circulation oven to prevent pollution.

[0015] Figure 2 Schematic diagram of the position structure of the air inlet box of an external hot air circulation oven to prevent pollution.

[0016] Figure 3 Schematic diagram of the position structure of the second filter of the external hot air circulation oven to prevent pollution.

[0017] In the figure: 1. Oven body; 2. Y-shaped air inlet pipe; 3. First connecting pipe; 4. Heating box; 5. Centrifugal fan; 6. Motor; 7. Heater; 8. First filter; 9. Air inlet box; 10. Exhaust pipe; 11. Second connecting pipe; 12. Air inlet; 13. Exhaust port; 14. Dehumidification pipe; 15. HEPA filter; 16. First valve; 17. Second valve; 18. Second filter; 19. Third valve; 20. Third filter. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0021] Example

[0022] Reference Figures 1 to 3 , This embodiment provides an anti-pollution external hot air circulation oven, including an oven body 1, a Y-shaped air inlet pipe 2, a first connecting pipe 3, a heating box 4, a centrifugal fan 5, a motor 6, a heater 7, a first filter 8, a dehumidification component, an air inlet box 9, an exhaust pipe 10 and a second connecting pipe 11. Two air inlets 12 are symmetrically provided on both sides of the top of the oven body 1, an exhaust port 13 is provided in the center of the top of the oven body 1, the air outlet ends at both ends of the Y-shaped air inlet pipe 2 are respectively connected to the two air inlets 12, the heating box 4 is arranged on one side outside the oven body 1, and the air outlet end of the heating box 4 is connected to the Y-shaped air inlet through the first connecting pipe 3. The air inlet end of the tube 2 is connected, the centrifugal fan 5 is arranged at the bottom of the heating box body 4, the motor 6 is arranged on the centrifugal fan 5, the heater 7 is arranged in the heating box body 4, and is used to heat the inhaled air, the first filter 8 is arranged at the air outlet end at the top of the heating box body 4, and is used to filter the heated hot air, the dehumidification component is arranged at the air outlet end of the centrifugal fan 5, and is used to discharge part of the wet air, the air inlet box 9 is arranged on the back of the oven body 1, the exhaust port 13 of the oven body 1 is connected to the air inlet end of the air inlet box 9 through the exhaust pipe 10, and the air outlet end of the air inlet box 9 is connected to the air inlet end of the centrifugal fan 5 through the second connecting pipe 11.

[0023] The oven body 1 is a rectangular parallelepiped structure, which serves as the installation base of the entire oven. Two air inlets 12 are symmetrically provided on the left and right sides of the top of the oven body 1. The air inlet 12 is a rectangular structure as a whole, so that the filtered hot air can quickly and evenly enter the oven. An exhaust port 13 is provided at the center of the top of the oven body 1. The exhaust port 13 is a rectangular structure as a whole, so that the humid air after heat exchange in the oven can be quickly discharged. A Y-shaped air inlet pipe 2 is installed at the air inlet 12 on the top of the oven body 1. An air inlet hood that matches the air inlet 12 of the oven body 1 is installed on the air outlet end of the Y-shaped air inlet pipe 2. The air outlet ends at both ends of the Y-shaped air inlet pipe 2 are connected to the air inlet 12 of the oven body 1 through the air inlet hood, so that the hot air in the Y-shaped air inlet pipe 2 can pass through The air inlet 12 enters the interior of the oven, and a heating box 4 is installed on the left side of the outside of the oven body 1. An air outlet is provided on the top of the heating box 4. A first connecting pipe 3 is installed on the air outlet on the top of the heating box 4. The other end of the first connecting pipe 3 is connected to the air inlet end of the Y-shaped air inlet pipe 2, so that the hot air in the heating box 4 enters the Y-shaped air inlet pipe 2 through the first connecting pipe 3. A centrifugal fan 5 is installed at the bottom of the heating box 4. A motor 6 is installed on the centrifugal fan 5 to drive the centrifugal fan 5 to work. A heater 7 is installed in the heating box 4. The heater 7 is above the centrifugal fan 5, and the air inlet end of the heater 7 is connected to the air outlet end of the centrifugal fan 5, so that the air inhaled by the centrifugal fan 5 can enter the heater 7 above Internal heating, a first filter 8 is installed at the air outlet end at the top of the heating box body 4, the first filter 8 is directly above the heater 7, the air inlet end of the first filter 8 is connected to the air outlet end of the heater 7, and the air outlet end of the first filter 8 is connected to the air outlet end at the top of the heating box body 4, so that the heated hot air is directly filtered through the first filter 8, and the hot air after filtration flows from the air outlet end at the top of the heating box body 4 to the first connecting pipe 3, and a dehumidification component is installed on the left side of the air outlet end of the centrifugal fan 5, through which part of the humid air inhaled by the centrifugal fan 5 can be discharged to reduce the power loss of the heater 7, and an air inlet box 9 is installed on the back of the oven body 1, and an exhaust pipe is installed at an air inlet end of the air inlet box 9 close to the oven body 1 10. The other end of the exhaust pipe 10 is equipped with an exhaust hood that matches the exhaust port 13 of the oven body 1. The exhaust pipe 10 is connected to the exhaust port 13 of the oven body 1 through the exhaust hood, so that the moist air in the oven can flow into the exhaust pipe 10 through the exhaust port 13 and enter the air inlet box 9 through the exhaust pipe 10 to achieve the recycling of the moist air. A second connecting pipe 11 is installed at the air outlet end of the air inlet box 9. The other end of the second connecting pipe 11 is connected to the air inlet end of the centrifugal fan 5, so that the centrifugal fan 5 can suck the moist air discharged into the air inlet box 9 into the heating box 4 through the second connecting pipe 11, so as to realize the circulation, heating and filtration of the air outside the oven, thereby avoiding contamination of the medicines in the oven during the drying process.

[0024] Specifically, the dehumidification component includes a dehumidification pipe 14 and a high-efficiency filter 15. The dehumidification pipe 14 is arranged at the air outlet end of the centrifugal fan 5. The air inlet end of the dehumidification pipe 14 is connected to the air outlet end of the centrifugal fan 5. The high-efficiency filter 15 is arranged on the dehumidification pipe 14.

[0025] The dehumidification component in this embodiment is mainly composed of a dehumidification pipe 14 and a high-efficiency filter 15. The dehumidification pipe 14 is installed on the left side of the air outlet end of the centrifugal fan 5 to discharge part of the wet air inhaled by the centrifugal fan 5, reducing the power loss of the heater 7 and achieving a certain energy-saving effect. A high-efficiency filter 15 is installed on the dehumidification pipe 14. The high-efficiency filter 15 can filter the discharged wet air to prevent the wet air from being directly discharged into the atmosphere and causing certain pollution to the environment.

[0026] Furthermore, a first valve 16 is provided at the inlet end of the moisture drain pipe 14 close to the high efficiency filter 15 .

[0027] In this embodiment, a first valve 16 is installed at the inlet end of the dehumidification pipe 14 near the high-efficiency filter 15 (on the dehumidification pipe 14 at the lower end of the high-efficiency filter 15), and the opening and closing of the first valve 16 are controlled to prevent external wet air from flowing back into the centrifugal fan 5.

[0028] Furthermore, a second valve 17 is provided on the first connecting pipe 3 .

[0029] In this embodiment, a second valve 17 is installed on the first connecting pipe 3 so as to control the flow rate of hot air in the first connecting pipe 3 according to actual needs.

[0030] Furthermore, a second filter 18 is provided on the air intake box 9 .

[0031] In this embodiment, a second filter 18 is installed at the other air inlet end of the air inlet box 9 to facilitate filtering of the external air entering the air inlet box 9 .

[0032] Furthermore, a third valve 19 is provided at one end of the exhaust pipe 10 close to the air intake box 9 .

[0033] In this embodiment, a third valve 19 is installed at one end of the exhaust pipe 10 close to the air inlet box 9 (the air outlet end of the exhaust pipe 10) to control the flow rate of the humid air discharged from the oven into the exhaust pipe 10 according to actual needs.

[0034] Furthermore, a third filter 20 is provided in the air intake box 9 near the air intake end of the exhaust pipe 10 .

[0035] In this embodiment, a third filter 20 is installed in the air intake box 9 at the air intake end close to the exhaust pipe 10 to filter the wet air entering the air intake box 9 .

[0036] During use, the motor 6 drives the centrifugal fan 5 to work, so that the humid air after the heat exchange in the oven is discharged from the exhaust port 13 on the top of the oven body 1 to the exhaust pipe 10, and enters the air inlet box 9 through the exhaust pipe 10. The third filter 20 in the air inlet box 9 filters the humid air. The humid air after filtering is sucked by the centrifugal fan 5 and enters the centrifugal fan 5 through the second connecting pipe 11, and flows out from the air outlet end of the centrifugal fan 5. At this time, part of the humid air passes through the dehumidification pipe 14 and is filtered again by the high-efficiency filter 15 on the dehumidification pipe 14 before being discharged to the atmosphere, so as to reduce the power loss of the heater 7 and achieve a certain energy-saving effect. The other part of the humid air enters the heater 7 above the centrifugal fan 5 to heat the humid air. In this process, since part of the humid air is discharged from the dehumidification pipe 14, the external air It will be filtered by the second filter 18 and enter the air intake box 9, and enter the centrifugal fan 5 together with the humid air in the air intake box 9 through the second connecting pipe 11 to achieve the effect of replenishing air. The hot air after heating passes through the first filter 8 and enters the first connecting pipe 3. Then the high-temperature air after filtration enters the Y-shaped air intake pipe 2 through the first connecting pipe 3, and flows to the two sides of the oven body 1 through the air inlet 12 at both ends of the Y-shaped air intake pipe 2. The hot air on both sides flows to the middle of the oven body 1 to achieve the effect of drying the medicines in the tray. Finally, the humid air after heat exchange is discharged to the exhaust pipe 10 through the exhaust port 13 in the middle of the top of the oven body 1, completing a hot air cycle until the medicines are dried, thereby avoiding contamination of the medicines in the oven during the drying process to meet drug supervision management specifications.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An anti-pollution external hot air circulation oven, characterized by: The invention comprises a drying oven body (1), a Y-shaped air inlet pipe (2), a first connecting pipe (3), a heating box body (4), a centrifugal fan (5), a motor (6), a heater (7), a first filter (8), a dehumidification component, an air inlet box (9), an exhaust pipe (10) and a second connecting pipe (11), wherein two air inlets (12) are symmetrically provided on both sides of the top of the drying oven body (1), an exhaust port (13) is provided in the center of the top of the drying oven body (1), the air outlet ends at both ends of the Y-shaped air inlet pipe (2) are respectively connected to the two air inlets (12), the heating box body (4) is arranged on one side outside the drying oven body (1), the air outlet end of the heating box body (4) is connected to the air inlet end of the Y-shaped air inlet pipe (2) through the first connecting pipe (3), the centrifugal fan ( 5) is arranged at the bottom of the heating box (4), the motor (6) is arranged on the centrifugal fan (5), the heater (7) is arranged in the heating box (4) for heating the inhaled air, the first filter (8) is arranged at the air outlet end of the top of the heating box (4) for filtering the heated hot air, the dehumidification component is arranged at the air outlet end of the centrifugal fan (5) for discharging part of the wet air, the air inlet box (9) is arranged on the back of the drying box (1), the exhaust port (13) of the drying box (1) is connected to the air inlet end of the air inlet box (9) through the exhaust pipe (10), and the air outlet end of the air inlet box (9) is connected to the air inlet end of the centrifugal fan (5) through the second connecting pipe (11).

2. The anti-pollution external hot air circulation oven according to claim 1, characterized in that: The dehumidification component comprises a dehumidification pipe (14) and a high-efficiency filter (15); the dehumidification pipe (14) is arranged at the air outlet end of the centrifugal fan (5); the air inlet end of the dehumidification pipe (14) is connected to the air outlet end of the centrifugal fan (5); and the high-efficiency filter (15) is arranged on the dehumidification pipe (14).

3. The anti-pollution external hot air circulation oven according to claim 2, characterized in that: The moisture drain pipe (14) is provided with a first valve (16) at the inlet end close to the high efficiency filter (15).

4. The anti-pollution external hot air circulation oven according to claim 1, characterized in that: A second valve (17) is provided on the first connecting pipe (3).

5. The anti-pollution external hot air circulation oven according to claim 1, characterized in that: The air inlet box (9) is provided with a second filter (18).

6. The anti-pollution external hot air circulation oven according to claim 1, characterized in that: A third valve (19) is provided at one end of the exhaust pipe (10) close to the air inlet box (9).

7. The anti-pollution external hot air circulation oven according to claim 6, characterized in that: A third filter (20) is provided in the air intake box (9) at the air intake end close to the exhaust pipe (10).

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