Energy-saving drying machine

Abstract

The utility model discloses an energy -conserving drying machine, its technical scheme main points include hopper, drying barrel and heating pipeline, the hopper, drying barrel and heating pipeline all are set to hollow double -deck structure, and the hollow double -deck structure is filled with thermal insulation material, be provided with electric heating tube subassembly in the heating pipeline, electric heating tube subassembly includes the electric heating tube of multiple staggered settings, be provided with the heat conduction fin of array setting along the pipe body extension direction on electric heating tube, the utility model discloses can effectively solve the problem of heat dissipation, has the faster heating and heat dissipation speed simultaneously, more accurate control drying temperature.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and more specifically to an energy-saving dryer. Background Technology

[0002] A dryer is a mechanical device that uses heat energy to reduce the moisture content of materials, used for drying operations. Currently, in the field of plastic granule processing, dryers are required to dry plastic granules. While traditional dryers can dry materials, they suffer from significant energy waste. Firstly, the hot air in traditional dryers continuously dissipates heat during transport. Secondly, the heating elements in traditional dryers are relatively simple, resulting in slow heating and cooling rates, leading to inaccurate temperature control and frequent start-stop cycles. These problems cause substantial energy waste and increase the economic costs of production activities. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention provides an energy-saving dryer that can effectively solve the problem of heat dissipation, while having a faster heating and cooling speed and more precise control of drying temperature.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving dryer, comprising a hopper, a drying barrel, and a heating pipe, wherein the hopper, drying barrel, and heating pipe are all configured as hollow double-layer structures, and the hollow double-layer structures are filled with heat-insulating material; an electric heating tube assembly is provided inside the heating pipe, the electric heating tube assembly comprising multiple staggered electric heating tubes, and the electric heating tubes are provided with heat-conducting fins arranged in an array along the extension direction of the tube body.

[0005] The present invention is further configured such that the heat-conducting fins are configured as a ring structure.

[0006] The present invention is further configured such that: a blower for air intake is provided above the heating pipe, and a hopper is connected below the heating pipe for air outlet.

[0007] The present invention is further configured such that: a discharge port that can be opened or closed is provided below the hopper, and a drying barrel is detachably connected above the hopper.

[0008] The present invention is further configured such that: a sealing layer is provided between the hopper and the drying barrel, and a snap-fit ​​structure is provided on the outer side of the hopper and the drying barrel to achieve connection.

[0009] The present invention is further configured such that: a lid is provided on the top of the drying barrel, the lid is a hollow double-layer structure and is filled with heat-insulating material, and an air outlet pipe is provided on the top of the lid.

[0010] The present invention is further configured such that several of the heating elements are configured as U-shaped tubes.

[0011] The present invention is further configured such that: the heating tubes are configured as three, two of which are arranged side by side, and the third heating tube passes through the U-shaped space between the two side by side heating tubes, forming the staggered arrangement.

[0012] The present invention is further configured to include a control box, wherein the controller inside the control box is electrically connected to a first temperature control probe and a second temperature control probe, and the first temperature control probe and the second temperature control probe are respectively disposed in the drying barrel and the heating pipe.

[0013] The present invention is further provided with: a plurality of vertically extending protruding ribs are provided on the inner wall of the drying barrel.

[0014] In summary, this utility model has the following beneficial effects:

[0015] The hopper, drying drum, and heating pipe of this invention are all hollow structures filled with insulation material. The insulation material in the hopper and drying drum ensures stable internal temperature during material drying. The insulation material in the heating pipe reduces heat loss during hot air transport, keeping the temperature of the hot air entering the hopper and drying drum basically consistent with the set value. This greatly improves the overall insulation performance and temperature stability of the equipment, thus saving energy.

[0016] The electric heating tube assembly of this utility model concentrates the heating area and achieves good heating effect through the staggered arrangement of electric heating tubes. In addition, the heat-conducting fins increase the contact with the airflow. The electric heating tubes heat the gas quickly during heating, and the airflow can also quickly remove the heat after the electric heating tubes stop heating, resulting in a fast cooling speed. This makes the drying temperature control of the equipment more precise and avoids the problem of frequent start-stop of the heating tubes due to slow temperature changes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the dryer.

[0018] Figure 2 This is a schematic diagram of the frame cross-section structure of the dryer.

[0019] Figure 3 This is a schematic diagram of the electric heating tube assembly.

[0020] Attached reference numerals: 1. Hopper; 2. Drying barrel; 3. Heating pipe; 31. Electric heating tube; 32. Heat-conducting fins; 33. Blower; 4. Control box; 5. Discharge port; 6. Barrel lid; 61. Air outlet pipe; 7. Insulation material. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] This embodiment discloses an energy-saving dryer, such as Figure 1-3 As shown, the system includes a hopper 1, a drying drum 2, and a heating pipe 3. All three components—hopper 1, drying drum 2, and heating pipe 3—are hollow double-layered structures filled with insulation material 7. Specifically, the double-layered structure comprises an inner layer and an outer layer, with the insulation material 7 positioned between them. The inner and outer layers can be made of materials such as stainless steel, while the insulation material itself can be a commonly used and high-temperature resistant material in the field, such as rock wool. This design ensures stable internal temperatures for the hopper 1 and drying drum 2 during the drying process, resulting in effective drying of the material. Insulation of the heating pipe 3 reduces heat loss during hot air transport, ensuring that the temperature of the hot air entering the hopper and drying drum remains consistent with the set value, thus maintaining the drying effect. Furthermore, the insulation material 7 stabilizes the overall temperature of the equipment, saving energy. Moreover, the insulation material and double-layered structure prevent the high temperature of the inner layer from being conducted to the outer shell, thus preventing burns even if workers accidentally touch the outer shell, enhancing safety.

[0023] This embodiment further incorporates a novel electric heating tube assembly within the heating pipe 3. The assembly includes multiple staggered electric heating tubes 31, each equipped with an array of heat-conducting fins 32 arranged along the tube's extension direction. These heat-conducting fins 32 can be annular. This structure allows the staggered heating tubes 31 to have a more concentrated heating area, enabling rapid heating when airflow passes through. Combined with the increased contact area of ​​the gas flow by the heat-conducting fins 32, heating is both fast and effective, quickly reaching the set drying temperature. Simultaneously, during cooling, the heat-conducting fins also facilitate rapid heat dissipation from the heating tubes, resulting in more sensitive and precise temperature control.

[0024] Furthermore, refer to Figure 1 A blower 33 for air intake is installed above the heating pipe 3. The blower 33 sends outside air into the heating pipe 3 for heating. The bottom of the heating pipe 3 is connected to the hopper 1 for air outlet. Specifically, the air outlet at the bottom of the heating pipe 3 is connected to the bottom of the side wall of the hopper 1, so that the incoming hot air passes through the hopper 1 and the drying barrel 2 from bottom to top, achieving efficient drying.

[0025] Furthermore, a discharge port 5 is provided at the bottom of hopper 1, which can be opened or closed. Discharge port 5 is closed during drying and opened after drying to discharge the dried material from the bottom. When switching to dry different materials, the previously dried material needs to be thoroughly cleaned. To facilitate cleaning, the drying barrel 2 above hopper 1 is designed to be detachable, allowing the deeper drying barrel 2 to be directly removed for independent cleaning of hopper 1 and drying barrel 2. Furthermore, a sealing layer is provided between hopper 1 and drying barrel 2. This sealing layer can be made of high-temperature resistant rubber or other materials to ensure that although the hopper and drying barrel are detachable, there will be no hot air leakage after installation. Specifically, the detachable structure can be achieved by installing clips on the outside of hopper 1 and drying barrel 2.

[0026] Furthermore, a lid 6 is provided on top of the drying barrel 2. The lid 6 also features a hollow double-layer structure similar to the hopper, drying barrel, and heating channel, and is filled with insulation material, providing strong insulation performance inside the drying barrel 2 when the lid 6 is closed. An air outlet duct 61 is provided above the lid 6 to discharge moisture and other contaminants carried in the hot air. It is important to note that filters can be installed at both the air outlet duct 61 and the air inlet of the blower 33. The filter at the air outlet duct 61 reduces pollution of the outside air, while the filter at the air inlet of the blower 33 reduces the entry of dust and other pollutants into the equipment.

[0027] Furthermore, refer to Figure 3 Specifically, in this embodiment, several heating elements are configured as U-shaped tubes, and there are three heating elements 31. Two heating elements 31a are arranged side by side, and the third heating element 31b passes through the U-shaped space between the two side by side heating elements, forming an alternating arrangement. This alternating arrangement efficiently utilizes the space of the U-shaped tube, and the airflow from... Figure 3 The airflow enters the area formed by the heating element 31 through the hole above the center. Both the middle and outer parts of the airflow are surrounded by the heating element 31 for heating, which makes the heating area concentrated, the heating speed fast and the effect good. The corresponding heat dissipation speed is also fast. The air can be heated to the required temperature in a few seconds, avoiding the problem of frequent start-stop of the heating element due to slow temperature change.

[0028] Furthermore, to achieve stable temperature control, a control box 4 is installed on the equipment. The controller inside the control box 4 is electrically connected to a first temperature control probe and a second temperature control probe, which are respectively located inside the drying drum 2 and the heating pipe 3. The controller also controls the opening and closing of the heating element and the heating temperature. The first temperature control probe detects the ambient temperature inside the drying drum 2, while the second temperature control probe detects the hot air temperature inside the heating pipe. By comparing the two temperature control probes, temperature stability can be better maintained, and problems with excessively low or high temperatures can be easily detected. For example, if the temperature inside the drying drum 2 is normal for a short period, but the temperature in the heating pipe 3 fluctuates, it is possible that there is a problem with the heating element or the blower. Conversely, if the temperature inside the drying drum is unstable, but the temperature in the heating pipe 3 is stable for a short period, it is possible that there is a problem with the sealing of the drum lid or a blockage in the air outlet pipe. Therefore, setting up two temperature control probes allows for comprehensive judgment to control the temperature and facilitates problem detection by operators.

[0029] Furthermore, several vertically extending raised ribs can be provided on the inner wall of the drying barrel 2. This can increase the strength of the barrel and, due to the outer contour of the raised ribs, increase the gap between the material particles, the raised ribs, and the inner wall of the barrel, making it easier to guide hot air from bottom to top and avoiding the problem of heat accumulation in the lower layer of the material and insufficient temperature in the upper layer.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy-saving dryer, comprising a hopper (1), a drying drum (2), and a heating pipe (3), characterized in that: The hopper (1), drying barrel (2) and heating pipe (3) are all configured as hollow double-layer structures, and the hollow double-layer structure is filled with heat-insulating material (7); the heating pipe (3) is provided with an electric heating tube assembly, the electric heating tube assembly includes multiple staggered electric heating tubes (31), and the electric heating tubes (31) are provided with heat-conducting fins (32) arranged in an array along the extension direction of the tube body.

2. The energy-saving dryer according to claim 1, characterized in that: The heat-conducting fins (32) are configured as a ring structure.

3. The energy-saving dryer according to claim 1, characterized in that: A blower (33) for air intake is provided above the heating pipe (3), and a hopper (1) is connected below the heating pipe (3) for air outlet.

4. The energy-saving dryer according to claim 1, characterized in that: The hopper (1) is provided with an opening (5) that can be opened or closed below it, and a drying barrel (2) is detachably connected to the top of the hopper (1).

5. An energy-saving dryer according to claim 4, characterized in that: A sealing layer is provided between the hopper (1) and the drying barrel (2), and a snap-fit ​​structure is provided on the outside of the hopper (1) and the drying barrel (2) to achieve connection.

6. An energy-saving dryer according to claim 1, characterized in that: The drying barrel (2) is provided with a barrel cover (6) on top. The barrel cover (6) is a hollow double-layer structure and is filled with heat insulation material. An air outlet pipe (61) is provided on top of the barrel cover (6).

7. An energy-saving dryer according to claim 1, characterized in that: Some of the heating elements are configured as U-shaped tubes.

8. An energy-saving dryer according to claim 7, characterized in that: The heating element (31) is configured as three elements, with two heating elements arranged side by side and the third heating element passing through the U-shaped space between the two side by side heating elements, forming the staggered arrangement.

9. An energy-saving dryer according to claim 1, characterized in that: Includes a control box (4), in which a controller is electrically connected to a first temperature control probe and a second temperature control probe, which are respectively installed in the drying barrel (2) and the heating pipe (3).

10. An energy-saving dryer according to claim 1, characterized in that: The inner wall of the drying barrel (2) is provided with several vertically extending protruding ribs.

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