Internal circulation dryer

Abstract

The utility model relates to the technical field of drying machines, and discloses an internal circulation drying machine which comprises a drying machine body, the top face of the drying machine body is fixedly connected with a filtering assembly, the side face of the drying machine body is provided with a circulation assembly, and one side of the drying machine body is provided with a pressure relief assembly. The filtering assembly comprises a filtering box fixedly connected to the top face of the drying machine body. According to the internal circulation drying machine, through the arrangement of the filtering assembly and the circulation assembly, when the internal circulation drying machine is used, an air pump is started, gas in the drying machine body is pumped out through a circulation pipe, the gas passes through an activated carbon filter screen during pumping, and the activated carbon filter screen filters the gas, so that water vapor, peculiar smells and the like generated in the device can be absorbed; and the filtered air is heated by the heating net and returns to the interior of the dryer body again, so that the air in the dryer body continuously and circularly flows, the drying speed is increased, and the drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to an internal circulation dryer. Background Technology

[0002] Drying plays a crucial role in numerous industrial and agricultural sectors. In agriculture, harvested agricultural products such as grains, fruits, vegetables, and tea require timely drying to reduce moisture content, inhibit microbial growth, extend shelf life, and ensure the quality and safety of the produce. For example, grains like wheat and rice are highly susceptible to mold and spoilage in humid environments if not dried promptly, resulting in significant economic losses. In industry, drying is also frequently necessary in the production of chemical raw materials, building materials, and textiles. Drying chemical raw materials removes excess moisture, increases purity, and facilitates subsequent chemical reactions; drying building materials such as gypsum board and wood enhances their physical properties and improves product quality; and drying textiles brings them to a suitable moisture content, facilitating subsequent processing and packaging.

[0003] In traditional dryers, a large amount of heat is directly discharged into the atmosphere along with the exhaust gas during the drying process, resulting in a huge waste of energy. At the same time, the direct discharge of hot gas means that the internal items have a short contact time with the hot gas, which makes the drying efficiency relatively low. Therefore, an internal circulation dryer is proposed. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a highly practical internal circulation dryer that is easy to operate and has a simple structure. This solves the problem mentioned in the background art that in traditional dryers, a large amount of heat is directly discharged into the atmosphere with the exhaust gas during the drying process, resulting in a huge waste of energy. At the same time, the direct discharge of hot gas results in a short contact time between the internal items and the hot gas, thus making the drying efficiency relatively low.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an internal circulation dryer, comprising a dryer body, a filter assembly fixedly connected to the top surface of the dryer body, a circulation assembly provided on the side of the dryer body, and a pressure relief assembly provided on one side of the dryer body. The filter assembly includes a filter box fixedly connected to the top surface of the dryer body, with two sets of filter frames slidably connected inside the filter box, each set of filter frames having an activated carbon filter screen fixedly connected inside. The circulation assembly includes a circulation pipe provided on the side of the dryer body, with a mounting block provided on one side of the circulation pipe, a heating grid fixedly connected inside the mounting block, and an air pump fixedly connected to one end of the mounting block. The pressure relief assembly includes a pressure relief pipe fixedly connected to one side of the dryer body, with a solenoid valve provided on the outside of the pressure relief pipe. One end of the solenoid valve is electrically connected to a controller via a power cord, one end of the controller is electrically connected to a pressure sensor via a power cord, and one side of the controller is electrically connected to an alarm light via a power cord.

[0006] As a further embodiment of this utility model, a fixing block is fixedly connected to the top surface of the dryer body, and the alarm light is fixedly connected to the top surface of the fixing block. The fixing block serves to install the alarm light.

[0007] As a further embodiment of this utility model, a label plate is provided on the surface of the dryer body, and a base plate is fixedly connected to the bottom surface of the dryer body. The base plate serves to support the device.

[0008] As a further embodiment of this utility model, four sets of support legs are fixedly connected to the bottom surface of the base plate, and each of the four sets of support legs is fixedly connected to a pad. The pads prevent the device from sliding.

[0009] As a further embodiment of this utility model, a protective door is provided on the surface of the dryer body, and a pull plate is fixedly connected to the surface of the protective door. The protective door allows workers to place items inside the dryer body.

[0010] As a further embodiment of this utility model, an observation window is fixedly connected to the surface of the protective door. The observation window is made of transparent glass, which allows staff to observe the interior.

[0011] As a further embodiment of this utility model, a control panel is provided on the surface of the dryer body, and a switch door is provided at the lower end of the surface of the dryer body. A handle is fixedly connected to the surface of the switch door. The switch door enables the staff to perform internal maintenance.

[0012] This utility model provides an internal circulation dryer, which has the following beneficial effects:

[0013] 1. This internal circulation dryer, through the setting of filter components and circulation components, when in use, the air pump is started, and the gas inside the dryer body is drawn out through the circulation pipe. When the gas is drawn out, it passes through the activated carbon filter screen, which filters it and can absorb the water vapor and odor generated inside the device. The filtered gas is heated by the heating grid and then returns to the inside of the dryer body, which can make the air inside the dryer body continuously circulate, thereby accelerating the drying speed and improving the drying efficiency.

[0014] 2. This internal circulation dryer, through the setting of the pressure relief component, allows for the setting of a pressure threshold inside the dryer body on the controller during operation. The pressure sensor is used to detect the pressure inside the device. When the detected pressure exceeds the threshold set on the controller, the controller controls the alarm light to sound an alarm. At the same time, the controller controls the solenoid valve to open, so that the pressure inside the device is released through the pressure relief pipe, preventing the pressure inside the dryer body from continuing to rise, thereby preventing the equipment from exploding or other safety accidents due to excessive pressure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the pressure relief component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the filter assembly structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the circulation component of this utility model.

[0019] In the diagram: 1. Dryer body; 2. Filter assembly; 201. Filter box; 202. Filter frame; 203. Activated carbon filter screen; 3. Circulation assembly; 301. Circulation pipe; 302. Mounting block; 303. Heating grid; 304. Air pump; 4. Pressure relief assembly; 401. Pressure relief pipe; 402. Solenoid valve; 403. Controller; 404. Pressure sensor; 405. Alarm light; 5. Fixing block; 6. Label plate; 7. Base plate; 8. Support leg; 9. Gasket; 10. Protective door; 11. Pull plate; 12. Observation window; 13. Control panel; 14. Opening and closing door; 15. Handle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: an internal circulation dryer, including a dryer body 1, a filter assembly 2 fixedly connected to the top surface of the dryer body 1, which filters the internally circulating gas. A circulation assembly 3 is provided on the side of the dryer body 1, which allows the device to circulate the internal gas. A pressure relief assembly 4 is provided on one side of the dryer body 1 to prevent excessive pressure inside the device. The filter assembly 2 includes a filter box 201 fixedly connected to the top surface of the dryer body 1, and two sets of filter frames 202 slidably connected inside the filter box 201. The interior of both sets of filter frames 202... An activated carbon filter 203 is fixedly connected; the circulation component 3 includes a circulation pipe 301 disposed on the side of the dryer body 1, a mounting block 302 disposed on one side of the circulation pipe 301, a heating grid 303 fixedly connected inside the mounting block 302, and an air pump 304 fixedly connected to one end of the mounting block 302; the pressure relief component 4 includes a pressure relief pipe 401 fixedly connected to one side of the dryer body 1, a solenoid valve 402 disposed on the outside of the pressure relief pipe 401, a controller 403 electrically connected to one end of the solenoid valve 402 via a power cord, a pressure sensor 404 electrically connected to one end of the controller 403 via a power cord, and an alarm light 405 electrically connected to one side of the controller 403 via a power cord.

[0022] A fixing block 5 is fixedly connected to the top surface of the dryer body 1, and an alarm light 405 is fixedly connected to the top surface of the fixing block 5. The fixing block 5 serves to install the alarm light 405.

[0023] A label plate 6 is provided on the surface of the dryer body 1, and a base plate 7 is fixedly connected to the bottom surface of the dryer body 1. The base plate 7 serves to support the device.

[0024] Four sets of support legs 8 are fixedly connected to the bottom surface of the base plate 7. Each set of support legs 8 has a pad 9 fixedly connected to its bottom surface. The pad 9 is used to prevent the device from sliding.

[0025] A protective door 10 is provided on the surface of the dryer body 1. A pull plate 11 is fixedly connected to the surface of the protective door 10. The protective door 10 enables the staff to place items inside the dryer body 1.

[0026] An observation window 12 is fixedly connected to the surface of the protective door 10. The observation window 12 is made of transparent glass, which allows staff to observe the interior.

[0027] A control panel 13 is provided on the surface of the dryer body 1, and a switch door 14 is provided at the lower end of the surface of the dryer body 1. A handle 15 is fixedly connected to the surface of the switch door 14. The switch door 14 enables the staff to inspect the interior.

[0028] The model of controller 403 is PG-R7. The above parameters and model can be selected according to the actual situation.

[0029] In this invention, the working steps of the device are as follows:

[0030] First step: When in use, start the air pump 304 to extract the gas inside the dryer body 1 through the circulation pipe 301. When the gas is extracted, it passes through the activated carbon filter 203, which filters it and absorbs the water vapor and odor generated inside the device. The filtered gas is heated by the heating net 303 and then returns to the inside of the dryer body 1, which makes the air inside the dryer body 1 continuously circulate, thereby speeding up the drying speed and improving the drying efficiency.

[0031] The second step: When in use, set the internal pressure threshold of the dryer body 1 on the controller 403. The pressure sensor 404 is used to detect the internal pressure of the device. When the detected pressure exceeds the threshold set on the controller 403, the controller 403 controls the alarm light 405 to sound an alarm. At the same time, the controller 403 controls the solenoid valve 402 to open, so that the internal pressure of the device is released through the pressure relief pipe 401 to prevent the pressure inside the dryer body 1 from rising continuously, thereby preventing the equipment from exploding or other safety accidents due to excessive pressure.

[0032] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0033] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal circulation dryer comprising a dryer body (1), characterized in that: The top surface of the drying machine body (1) is fixedly connected with a filter assembly (2), the side surface of the drying machine body (1) is provided with a circulating assembly (3), one side of the drying machine body (1) is provided with a pressure relief assembly (4), The filter assembly (2) comprises a filter box (201) fixedly connected to the top surface of the drying machine body (1), and two groups of filter frames (202) are slidably connected in the filter box (201), and the inside of each of the two groups of filter frames (202) is fixedly connected with an activated carbon filter screen (203); The circulating assembly (3) comprises a circulating pipe (301) arranged on the side surface of the drying machine body (1), an installation block (302) is arranged on one side of the circulating pipe (301), a heating net (303) is fixedly connected in the installation block (302), and a gas pump (304) is fixedly connected to one end of the installation block (302); The pressure relief assembly (4) comprises a pressure relief pipe (401) fixedly connected to one side of the drying machine body (1), an electromagnetic valve (402) is arranged on the outer side of the pressure relief pipe (401), a controller (403) is electrically connected to one end of the electromagnetic valve (402) through a power line, a pressure sensor (404) is electrically connected to one end of the controller (403) through a power line, and an alarm lamp (405) is electrically connected to one side of the controller (403) through a power line.

2. An internal-loop dryer according to claim 1, characterized in that: The top surface of the drying machine body (1) is fixedly connected with a fixed block (5), and the alarm lamp (405) is fixedly connected to the top surface of the fixed block (5).

3. An internal-loop dryer according to claim 1, characterized in that: The surface of the drying machine body (1) is provided with a label plate (6), and the bottom surface of the drying machine body (1) is fixedly connected with a bottom plate (7).

4. An internal-loop dryer according to claim 3, wherein: The bottom surface of the bottom plate (7) is fixedly connected with four groups of supporting legs (8), and the bottom surface of each of the four groups of supporting legs (8) is fixedly connected with a gasket (9).

5. An internal-loop dryer according to claim 1, wherein: The surface of the drying machine body (1) is provided with a protection door (10), and the surface of the protection door (10) is fixedly connected with a pull plate (11).

6. An internal-loop dryer according to claim 5, wherein: The surface of the protection door (10) is fixedly connected with an observation window (12), and the material of the observation window (12) is transparent glass.

7. An internal-loop dryer according to claim 1, wherein: The surface of the drying machine body (1) is provided with a control panel (13), and the surface of the drying machine body (1) is provided with a switch door (14) at the lower end, and the surface of the switch door (14) is fixedly connected with a handle (15).

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