Composite deodorization rotary disc type hot air circulation drying equipment

Abstract

The application discloses a composite deodorization rotary disc type hot air circulation drying equipment and belongs to the field of pharmaceutical equipment. The main components are a drying room (1), electric dust removal (3), a centrifugal fan (4), a heat exchange system (5), a spraying system (6), an ionization adsorption system (7) and an activated carbon filter plate (8). The application innovatively designs and functionally expands the conventional drying equipment. The new structures such as the electric dust removal (3), the heat exchange system (5), the spraying system (6) and the ionization adsorption system (7) achieve the effect of three times of deodorization and can realize the purification treatment of the gas generated during the drying of the materials. The drying equipment is energy-saving and emission-reducing, environment-friendly, and can promote the technological innovation and industrial upgrading of the traditional Chinese medicine pharmaceutical industry.

Description

Technical Field

[0001] This invention relates to a composite deodorizing rotary hot air circulating dryer, belonging to the field of pharmaceutical equipment. Background Technology

[0002] In the traditional Chinese medicine pharmaceutical industry, drying medicinal materials is an indispensable and crucial step to ensure long-term storage stability, increase the concentration of active ingredients, and meet the needs of large-scale industrial production. Drying effectively reduces the moisture content of medicinal materials, facilitating long-term preservation. Simultaneously, the reduction in moisture leads to a relative increase in the concentration of active ingredients, thereby enhancing efficacy. Furthermore, the reduced volume and dryness of the materials ensure compliance with specified moisture content and quality requirements. More importantly, it effectively reduces the microbial content, ensuring medication safety. However, during the heating and drying process, while the moisture in the medicinal materials evaporates, certain volatile components, including aroma components and unpleasant odor components (such as the distinctive odor of herbal medicines and the fishy smell of animal-derived medicines), may also volatilize, producing off-odors. This not only affects the sensory quality of the medicinal materials but may also potentially impact the quality stability of subsequent preparations. Animal-derived medicinal materials are an important component of traditional Chinese medicine. They originate from the whole animal, its organs or tissues, physiological or pathological products, excrement or secretions, or processed products. Most contain proteins, fatty acids, and trimethylamine oxide, which are prone to decomposition, producing a fishy or foul odor. The drying process further accelerates the release of this odor. In addition, traditional Chinese medicine preparations often contain various extracts, such as plant extracts and animal extracts. These extracts have complex compositions and may contain multiple volatile components, which volatilize and produce unpleasant odors during the drying process.

[0003] The odorous gases released during the processing of medicinal herbs, such as small-molecule aldehydes and volatile organic amines, are highly irritating. Long-term inhalation can irritate the respiratory mucosa, causing symptoms such as coughing and wheezing, and may also affect the digestive system, leading to adverse reactions such as nausea and vomiting. Some harmful gases are toxic to the nervous system, and some may cause allergic reactions or skin inflammation upon skin contact. Persistent odor stimulation may also affect the mental health of employees, leading to emotional problems such as anxiety and depression. From an environmental protection perspective, these odors may also negatively impact the quality of life of surrounding residents. Long-term emissions of odorous gases will deteriorate the regional air quality and may even lead to secondary pollution such as photochemical smog and acid rain, causing even greater damage to the ecological environment.

[0004] Odor issues during medicinal herb processing are a serious concern, and environmental regulations require that waste gases be collected, treated, and discharged in compliance with standards. Currently, there are no specific measures or equipment to control odors generated during the drying process. To reduce the impact of odors during medicinal herb processing, source control should be strengthened, such as by using modern, environmentally friendly, and efficient drying equipment. This can not only effectively remove odor-causing substances but also ensure the drying quality and safety of medicinal herbs, promoting technological innovation and industrial upgrading in the traditional Chinese medicine pharmaceutical industry. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of existing drying equipment, the technical problem to be solved by the present invention is to provide a composite deodorizing medicinal material drying equipment, which can remove the odor generated during the heating and drying process of medicinal materials. Through a combination of deodorization processes such as neutralization spraying, high-voltage ionization and adsorption, the odorous gas can be purified, thereby eliminating the negative impact on employees, society and the environment.

[0006] The technical problem solved by this invention is specifically achieved through the following technical solutions:

[0007] A composite deodorizing rotary hot air circulating dryer mainly consists of a drying chamber 1, an electrostatic precipitator 3, a centrifugal fan 4, a heat exchange system 5, a spray system 6, an ionization adsorption system 7, and an activated carbon filter plate 8. Its special feature is that the drying chamber 1 is connected to the composite deodorizing exhaust channel 2 and the exhaust bypass 9 respectively. The drying chamber 1 is sequentially connected to the electrostatic precipitator 3, the centrifugal fan 4, the heat exchange system 5, and the spray system 6 through the composite deodorizing exhaust channel 2.

[0008] The drying chamber 1 is equipped with a material tray support rotation drive device 15 inside, a control panel 11 is set on the upper left side of the outside of the drying chamber 1, a drying chamber heating system 13 is set below it, a drying chamber insulation door 12 is set on the right side, and a drying chamber insulation layer 14 is set on the outer periphery of the drying chamber 1.

[0009] In this invention, the spraying system 6 consists of a spraying tower 61 and a spraying agent conveying pipe 63. The top of the spraying tower 61 is provided with a demisting baffle 65, and an atomizing nozzle 67 is provided below the demisting baffle 65. The bottom of the spraying tower 61 is provided with a baffle 69, and a spraying agent recovery tank 62 and a water inlet pool 64 are respectively provided below the baffle 69. The water inlet pool 64 is provided with a stirring paddle 66. The water inlet pool 64 is connected to the atomizing nozzle 67 through the spraying agent conveying pipe 63. A water pump 68 is provided on the spraying agent conveying pipe 63.

[0010] A drain valve 70 is provided at the bottom of the spray system 6. A dryer 71 is provided between the spray system 6 and the ionization adsorption system 7, and a water valve 74 is provided below the dryer 71.

[0011] In this invention, the ionization adsorption system 7 consists of a tubular high-voltage ionization generator 72 and a low-voltage electrostatic adsorption partition 73, and is connected in sequence to the heat exchange system 5 and the activated carbon filter plate 8 through an exhaust pipe. The activated carbon filter plate 8 is connected to the exhaust bypass 9 through an exhaust pipe.

[0012] The rotating drive device 15 for the tray support consists of a support shaft 16, a tray support 17, and a tray 18.

[0013] An exhaust valve 10 is provided between the drying chamber 1 and the exhaust bypass 9.

[0014] In the process of improving and optimizing this composite deodorizing rotary hot air circulating dryer, the inventors noticed that conventional hot air circulating dryers directly emit volatile components and odor molecules when drying medicinal materials, lacking an odor removal process. This invention aims to solve the problem of combined deodorization through neutralization spraying, high-voltage ionization, and adsorption, thereby purifying odorous gases and eliminating negative impacts on employees, society, and the environment.

[0015] Specifically, when performing the drying operation of the composite deodorizing rotary hot air circulating dryer of the present invention, the following steps are taken: First, open the drying chamber insulation door 12 through the control panel 11, place the material tray 18 containing the material into the material tray support 17, and place it layer by layer; close the drying chamber insulation door 12; add sufficient sodium bicarbonate solid to the water inlet tank 64 in the spray system 6, turn on the stirring paddle 66, and prepare the sodium bicarbonate solution; set the drying temperature and circulating air speed, close the exhaust valve 10, open the composite deodorizing exhaust channel 2, and start the electrostatic precipitator 3, centrifugal fan 4, heat exchange system 5, spray system 6, and ionization adsorption system 7; turn on the drying chamber heating system 13 to start the drying process; the material tray support 17 is kept in a slow rotating state in the drying chamber, and its rotation speed is adjustable to ensure uniform drying efficiency until drying is complete.

[0016] Odor-laden air generated during the drying process is propelled into the composite deodorizing exhaust channel 2 by a centrifugal fan 4. After being dusted by an electrostatic precipitator 3 and heat-exchanged by a heat exchange system 5, it is transported through a pipeline to the spray tower 61. The prepared sodium bicarbonate solution is pressurized by a water pump 68 and sprayed upwards into the atomizing nozzle 67 for deodorization. The neutralized spray liquid flows down along the baffle 69 and is discharged by opening the drain valve 70. Recyclable spraying agent can enter the spraying agent recovery tank 62. Unabsorbed gas is transported through a pipeline to the ionization adsorption system 7 via a mist baffle 65. It is first dried by a dryer 71, then sequentially passes through a tubular high-voltage ionization generator 72 and a low-voltage electrostatic adsorption module 73 for secondary deodorization via ionization adsorption. If water vapor condenses during the gas's journey from the spray system 6 to the ionization adsorption system 7, it can be discharged through a water valve 74. The ionized gas undergoes heat exchange through the heat exchange system 5 and is then transported through a pipeline to an activated carbon filter plate 8 for tertiary deodorization. Afterward, it becomes clean air and is discharged into the atmosphere via an exhaust bypass 9. Once the material is dried to the specified degree, the hot air is turned off. When the temperature drops to a safe range, the relevant modules of the composite deodorization channel 2 are closed. An opening command is input, and the material tray support 17 automatically adjusts its position. The drying chamber insulated door 12 is opened, and the material is discharged, completing the material drying process.

[0017] This invention features a reasonable structure, unique design, and convenient operation, producing significant technical effects. It is suitable for drying materials such as Chinese medicinal herbs and extracts with odors. Compared with existing drying equipment, this invention has the following substantial features and advancements:

[0018] 1) By setting up a dual channel of "composite deodorization exhaust channel 2" and "exhaust bypass 9", the present invention can switch between drying ordinary materials and odorous materials respectively, which is convenient and quick.

[0019] 2) The present invention is equipped with modules such as "electrostatic precipitator 3", "spray system 6", "ionization adsorption system 7" and "activated carbon filter plate 8" on the composite deodorization exhaust channel 2 to achieve three-stage deodorization of the gas, so as to achieve the purpose of safe emission.

[0020] 3) The "heat exchange system 5" set up in this invention cools the hot air and heats the cold air, promotes the emission of gas, and achieves the purpose of energy saving and consumption reduction. Attached Figure Description

[0021] To facilitate understanding and mastery of the technical solution of this application, the accompanying drawings will be briefly described below. It should be understood that the following drawings should not be regarded as a limitation on the scope of the technical solution.

[0022] Appendix Figure 1 A schematic diagram of a composite deodorizing rotary hot air circulating dryer.

[0023] Appendix Figure 1 The markings are described below: Drying Room-1 Control panel - 11, Drying room insulation door - 12, Drying room heating system - 13, Drying room insulation layer - 14; Composite deodorization exhaust channel - 2, electrostatic precipitator - 3, centrifugal fan - 4, heat exchange system - 5, activated carbon filter plate - 8, exhaust bypass - 9, exhaust valve - 10; Sprinkler System - 6 Spray tower-61, spray agent recovery tank-62, spray agent delivery pipeline-63, water inlet tank-64, mist baffle-65, stirring paddle-66, atomizing nozzle-67, water pump-68, baffle-69, drain valve-70. Ionization Adsorption System - 7 Dryer-71, tubular high-voltage ionization generator-72, low-pressure electrostatic adsorption baffle-73, water valve-74.

[0024] Appendix Figure 2 Schematic diagram of the rotating drive device for the material tray support

[0025] Appendix Figure 2 The markings are described below: Material tray support rotation drive device - 15 Support shaft -16, tray support -17, tray -18. Detailed Implementation

[0026] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0027] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the following embodiments are only a part of, and not all of, the embodiments of this application. Generally speaking, the components and connection methods described and shown in the accompanying drawings and this embodiment can be set and arranged in other ways; due to space limitations, they will not be listed here one by one.

[0028] Therefore, the following detailed description of the embodiments is not intended to limit the scope of protection claimed in this application. Equivalent substitutions or modifications made by those skilled in the art without inventive effort should be included within the scope of protection of this invention.

[0029] Example 1: Structure and operation mode of a composite deodorizing rotary hot air circulating dryer

[0030] As attached Figure 1 , 2As shown, the present invention provides a composite deodorizing rotary hot air circulating drying device: the drying chamber 1 is connected to the composite deodorizing exhaust channel 2 and the exhaust bypass 9 respectively, and the drying chamber 1 is sequentially connected to the electrostatic precipitator 3, the centrifugal fan 4, the heat exchange system 5, and the spray system 6 through the composite deodorizing exhaust channel 2.

[0031] The drying chamber 1 is equipped with a material tray support rotation drive device 15 inside, a control panel 11 is set on the upper left side of the outside of the drying chamber 1, a drying chamber heating system 13 is set below it, a drying chamber insulation door 12 is set on the right side, and a drying chamber insulation layer 14 is set on the outer periphery of the drying chamber 1.

[0032] When performing the drying operation of the composite deodorizing rotary hot air circulating dryer of this invention, the following steps are taken: First, open the drying chamber insulation door 12 through the control panel 11, place the material tray 18 containing the material into the material tray support 17, and place it layer by layer; close the drying chamber insulation door 12; add sufficient sodium bicarbonate solid to the water inlet tank 64 in the spray system 6, turn on the agitator 66, and prepare the sodium bicarbonate solution; set the drying temperature and circulating air speed, close the exhaust bypass 9 through the exhaust valve 10, open the composite deodorizing exhaust channel 2, and start the electrostatic precipitator 3, centrifugal fan 4, heat exchange system 5, spray system 6, and ionization adsorption system 7; turn on the drying chamber heating system 13 to start the drying process; the material tray support 17 is kept in a slow rotating state in the drying chamber, and its rotation speed is adjustable to ensure uniform drying efficiency until drying is complete.

[0033] Odor-laden air generated during the drying process is propelled into the composite deodorizing exhaust channel 2 by a centrifugal fan 4. After being dusted by an electrostatic precipitator 3 and heat-exchanged by a heat exchange system 5, it is transported through a pipeline to the spray tower 61. The prepared sodium bicarbonate solution is pressurized by a water pump 68 and sprayed upwards into the atomizing nozzle 67 for deodorization. The neutralized spray liquid flows down along the baffle 69 and is discharged by opening the drain valve 70. Recyclable spraying agent can enter the spraying agent recovery tank 62. Unabsorbed gas is transported through a pipeline via mist baffle 65 into the ionization adsorption system 7. It is first dried by dryer 71, then sequentially passes through a tubular high-voltage ionization generator 72 and a low-voltage electrostatic adsorption module 73 for secondary deodorization via ionization adsorption. If water vapor condenses during the gas's journey from spray system 6 to ionization adsorption system 7, it can be discharged via water valve 74. The ionized gas undergoes heat exchange through heat exchange system 5 and is then transported through a pipeline to activated carbon filter plate 8 for tertiary deodorization, after which it becomes clean air, which is discharged into the atmosphere via exhaust bypass 9. Once the material is dried to the specified degree, the hot air is turned off. After the temperature drops to a safe range, the relevant modules of the composite deodorization channel 2 are closed. An opening command is input, and the material tray support 17 automatically adjusts its position. The drying chamber insulated door 12 is opened, and the material is discharged, completing the material drying process.

Claims

1. A composite deodorizing rotary hot air circulating drying device, mainly composed of a drying chamber (1), an electrostatic precipitator (3), a centrifugal fan (4), a heat exchange system (5), a spray system (6), an ionization adsorption system (7), and an activated carbon filter plate (8), characterized in that: The drying chamber (1) is connected to the composite deodorizing exhaust channel (2) and the exhaust bypass (9) respectively. The drying chamber (1) is connected to the electrostatic precipitator (3), centrifugal fan (4), heat exchange system (5) and spray system (6) in sequence through the composite deodorizing exhaust channel (2).

2. The drying equipment as described in claim 1, characterized in that, The drying room (1) is equipped with a material tray support rotation drive device (15), a control panel (11) is set on the upper left side of the drying room (1), a drying room heating system (13) is set below, a drying room insulation door (12) is set on the right side, and a drying room insulation layer (14) is set on the outer periphery of the drying room (1).

3. The drying equipment as described in claim 1, characterized in that, The spraying system (6) consists of a spraying tower (61) and a spraying agent conveying pipe (63). The top of the spraying tower (61) is equipped with a demisting baffle (65), and an atomizing nozzle (67) is installed below the demisting baffle (65). The bottom of the spraying tower (61) is equipped with a baffle (69), and a spraying agent recovery tank (62) and a water inlet pool (64) are respectively installed below the baffle (69). The water inlet pool (64) is equipped with a stirring paddle (66), and the water inlet pool (64) is connected to the atomizing nozzle (67) through the spraying agent conveying pipe (63). A water pump (68) is installed on the spraying agent conveying pipe (63).

4. The drying equipment as described in claim 3, characterized in that, The spray system (6) is equipped with a drain valve (70) at the bottom.

5. The drying equipment as described in claim 1, characterized in that, The ionization adsorption system (7) consists of a tubular high-voltage ionization generator (72) and a low-voltage electrostatic adsorption partition (73). It is connected in sequence to the heat exchange system (5) and the activated carbon filter plate (8) through the exhaust pipe. The activated carbon filter plate (8) is connected to the exhaust bypass (9) through the exhaust pipe.

6. The drying equipment as described in claim 2, characterized in that, The rotating drive device (15) for the tray support consists of a support shaft (16), a tray support (17), and a tray (18).

7. The drying equipment as described in claim 1, characterized in that, A dryer (71) is provided between the spray system (6) and the ionization adsorption system (7), and a water valve (74) is provided below the dryer (71).

8. The drying equipment as described in claim 1, characterized in that, An exhaust valve (10) is provided between the drying chamber (1) and the exhaust bypass (9).

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