Drying machine with noise reduction function

Abstract

The utility model relates to the technical field of drying machines, in particular to a drying machine with a noise reduction function, which comprises a drying box, a fan and a heating component, the heating component comprises a heating box and an electric heating roller, a first soundproof box is arranged on the outer side of the drying box, and the bottom of the drying box and the bottom of the first soundproof box are conical. A certain space is reserved between the first soundproof box and the drying box, a heating box is arranged on one side of the first soundproof box, multiple sets of electric heating rollers are arranged on the inner side of the heating box, fans are arranged on the two sides of the first soundproof box, one set of fans blow air into the drying box, and the other set of fans exhaust air outwards from the first soundproof box. Impedance composite silencers are arranged at the air inlet end of the air blowing fan and the air outlet end of the air exhausting fan, second sound insulation boxes are arranged on the outer sides of the two sets of fans, and sound absorption cotton is arranged on the inner walls of the second sound insulation boxes and the inner wall of the first sound insulation box; the sound insulation box is arranged outside a main noise source of the drying machine, and noise generated when the drying machine is used is further reduced through the sound absorption cotton.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to a dryer with noise reduction function. Background Technology

[0002] A dryer is a mechanical device that uses heat energy to reduce the moisture content of materials. It is used to dry objects by heating the material to vaporize and escape the moisture (generally water or other volatile liquid components) to obtain solid materials with a specified moisture content.

[0003] Most existing dryers use hot air to dry materials, so they are equipped with fans and containers for storing materials. The sound of the fans and materials being blown and colliding with the containers is the main source of noise in dryers. Operators working in a high-noise environment for a long time can suffer health damage.

[0004] Therefore, to address the above issues, a dryer with noise reduction capabilities can be designed. A soundproof box can be installed outside the main noise source of the dryer, and sound-absorbing cotton can be used to further reduce noise during the operation of the dryer. Utility Model Content

[0005] To overcome the problem that most dryers use hot air to dry materials, they are equipped with fans and containers for storing materials. The noise from the fans and the materials being blown and colliding with the containers is the main source of noise in dryers, and operators working in high-noise environments for long periods of time can cause health damage.

[0006] The technical solution of this utility model is as follows: a dryer with noise reduction function, including a drying chamber, a fan, and a heating component. The heating component includes a heating chamber and electric heating rods. A first soundproof box is set on the outside of the drying chamber. The bottom of the drying chamber and the first soundproof box are conical. A certain space is left between the first soundproof box and the drying chamber. A heating chamber is set on one side of the first soundproof box. An electric heating rod is set on the inside of the heating chamber. Multiple sets of electric heating rods are set. Fans are set on both sides of the first soundproof box. One set of fans blows air into the drying chamber, and the other set of fans exhausts air out of the first soundproof box. Impedance composite silencers are set at the air inlet end of the blowing fan and the air outlet end of the exhaust fan. A second soundproof box is set on the outside of both sets of fans. Sound-absorbing cotton is set on the inner walls of the second soundproof box and the first soundproof box.

[0007] Preferably, a control module is provided on one side of the heating box. The control module is electrically connected to the fan and the heating roller. A display screen and control buttons are provided on the outside of the control module.

[0008] Preferably, a discharge pipe is provided at the bottom of the drying chamber, which extends through the bottom of the first soundproof box. An inlet pipe is provided at the top of the first soundproof box, and an exhaust vent is provided on the upper side wall of the drying chamber.

[0009] Preferably, the feed pipe and discharge pipe are equipped with solenoid valves, which are electrically connected to the control module.

[0010] Preferably, a baffle plate is provided on the inner side of the heating box. The length of the baffle plate is less than the width of the heating box. Multiple sets of baffle plates are provided and arranged in an alternating manner. The baffle plate divides the internal space of the heating box into a winding air duct.

[0011] Preferably, one end of the air duct is provided with a blower pipe, one end of which is connected to the air outlet of a blower used for blowing air, and the other end of the air duct is provided with an air inlet pipe, one end of which is connected to the bottom conical part of the drying box.

[0012] Preferably, the air inlet end of the fan used for ventilation is provided with an exhaust pipe, one end of which is provided with a diversion pipe. The diversion pipe is a one-to-four pipe and is connected to the four walls of the first soundproof box. An avoidance hole is provided at the connection between the sound-absorbing cotton and the diversion pipe.

[0013] The beneficial effects of this utility model are:

[0014] By setting up a fan to blow air heated by the electric heating rod into the drying chamber to dry the material, the two sets of fans, one for blowing and one for exhaust, can reduce the load on a single fan, allowing it to operate at a lower power to reduce noise. At the same time, the extended air duct of the heating chamber allows the electric heating rod to heat the air more thoroughly, enabling the fan to further reduce power without reducing drying efficiency. Furthermore, the lower power fan produces a lower airflow speed, resulting in less collision force between the material and the drying chamber, thus reducing noise in the drying chamber. In addition, the installation of an impedance composite silencer, a first sound insulation box, a second sound insulation box, and sound-absorbing cotton can further reduce the noise from the two sources of noise: the drying chamber and the fan. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the dryer with noise reduction function according to this utility model.

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the drying chamber of the dryer with noise reduction function according to this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the heating chamber of the dryer with noise reduction function according to this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the first soundproof box of the dryer with noise reduction function according to this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Drying oven; 2. First soundproof box; 3. Fan; 4. Impedance composite silencer; 5. Second soundproof box; 6. Sound-absorbing cotton; 7. Heating box; 8. Control module; 9. Heating roller; 101. Exhaust vent; 102. Feed pipe; 103. Discharge pipe; 104. Solenoid valve; 201. Exhaust pipe; 202. Diverter pipe; 203. Clearance hole; 701. Blower pipe; 702. Air inlet pipe; 703. Guide plate; 801. Display screen; 802. Control button. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-4 This utility model provides an embodiment of a dryer with noise reduction function, including a drying chamber 1, a fan 3, and a heating assembly. The heating assembly includes a heating chamber 7 and electric heating rods 9. A first soundproof box 2 is provided on the outside of the drying chamber 1. The bottoms of the drying chamber 1 and the first soundproof box 2 are conical, and a certain space is left between the first soundproof box 2 and the drying chamber 1. The heating chamber 7 is provided on one side of the first soundproof box 2, and electric heating rods 9 are provided on the inside of the heating chamber 7. Multiple sets of electric heating rods 9 are provided. Fans 3 are provided on both sides of the first soundproof box 2. One set of fans 3 blows air into the drying chamber 1, and the other set of fans 3 exhausts air out of the first soundproof box 2. Impedance composite silencers 4 are provided at the air inlet end of the blowing fan 3 and the air outlet end of the exhaust fan 3. A second soundproof box 5 is provided on the outside of both sets of fans 3. The inner wall of the first soundproof box 2 is lined with sound-absorbing cotton 6. Air heated by the electric heating roller 9 is blown into the drying box 1 by the fan 3 to dry the material. The configuration of two sets of fans 3, one blowing and one exhausting, can reduce the load on a single fan 3, so that the single fan 3 can operate at a lower power to reduce noise. At the same time, the extended air duct of the heating box 7 can make the electric heating roller 9 heat the air more fully, so that the fan 3 can further reduce the power without reducing the drying efficiency. In addition, the lower power of the fan 3 produces a lower airflow speed, and the collision force between the material and the drying box 1 is smaller, thus reducing the noise in the drying box 1. Furthermore, the combination of impedance composite silencer 4, first soundproof box 2, second soundproof box 5 and sound-absorbing cotton 6 can further reduce the sound of the two noise sources, the drying box 1 and the fan 3.

[0022] Please see Figures 1-2In this embodiment, a control module 8 is provided on one side of the heating box 7. The control module 8 is electrically connected to the fan 3 and the heating roller 9. A display screen 801 and control buttons 802 are provided on the outside of the control module 8. A discharge pipe 103 is provided at the bottom of the drying box 1, and the discharge pipe 103 passes through the bottom of the first soundproof box 2. A feed pipe 102 is provided at the top of the first soundproof box 2. An exhaust hole 101 is provided on the upper side wall of the drying box 1. A solenoid valve 104 is provided on the feed pipe 102 and the discharge pipe 103. The solenoid valve 104 is electrically connected to the control module 8. The operator inputs the device operating parameters to the control module 8 through the control button 802. The display screen 801 displays the parameters. The control module 8 controls the operation of the fan 3 and the electric heating roller 9 according to the parameters. When feeding, the solenoid valve 104 of the feed pipe 102 is opened and the solenoid valve 104 of the discharge pipe 103 is closed. The material enters the drying chamber 1 from the feed pipe 102. Then the solenoid valve 104 of the feed pipe 102 is closed for hot air drying. After drying is completed, the solenoid valve 104 of the discharge pipe 103 is opened and the material leaves the drying chamber 1 from the discharge pipe 103.

[0023] Please see Figure 3 In this embodiment, a guide plate 703 is provided on the inner side of the heating box 7. The length of the guide plate 703 is less than the width of the heating box 7. Multiple sets of guide plates 703 are provided and arranged in an alternating manner. The guide plate 703 divides the internal space of the heating box 7 into a meandering air duct. One end of the air duct is provided with a blower pipe 701. One end of the blower pipe 701 is connected to the air outlet of the blower 3 used for blowing air. The other end of the air duct is provided with an air inlet pipe 702. One end of the air inlet pipe 702 is connected to the bottom conical part of the drying box 1. Room temperature air enters the interior of the heating box 7 from the blower pipe 701. The guide plate 703 divides the internal space of the heating box 7 into a meandering air duct, which prolongs the residence time of the air in the heating box 7, so that the electric heating rod 9 can fully heat the air. The heated air enters the drying box 1 from the air inlet pipe 702.

[0024] Please see Figure 4 In this embodiment, the air inlet end of the fan 3 used for ventilation is provided with an exhaust pipe 201, and one end of the exhaust pipe 201 is provided with a diversion pipe 202. The diversion pipe 202 is a one-to-four pipe and is connected and interconnected with the four walls of the first soundproof box 2. The sound-absorbing cotton 6 is provided with a clearance hole 203 at the connection between it and the diversion pipe 202. The diversion pipe 202 allows the airflow to be evenly divided and enter the exhaust pipe 201 to reduce the airflow speed and thus reduce wind shear noise.

[0025] During feeding, the solenoid valve 104 of the feed pipe 102 opens, and the solenoid valve 104 of the discharge pipe 103 closes. The material enters the drying chamber 1 from the feed pipe 102. Afterward, the solenoid valve 104 of the feed pipe 102 closes, and the fan 3 on one side blows room temperature air into the heating chamber 7 from the blower pipe 701. The guide plate 703 divides the internal space of the heating chamber 7 into a meandering air duct, extending the residence time of the air in the heating chamber 7, so that the heating rod 9 can fully heat the air. The heated air enters the drying chamber 1 from the air inlet pipe 702 to dry the material with hot air. The airflow with moisture leaves the drying chamber 1 from the exhaust port 101 and enters the first soundproof box 2, and is discharged from the fan 3 on the other side through the diversion pipe 202 and the exhaust pipe 201. After drying is completed, the solenoid valve 104 of the discharge pipe 103 closes. When the drying chamber is turned on, the material leaves the drying chamber 1 through the discharge pipe 103. During the drying process, the impedance composite silencer 4 reduces the noise of the air inlet and outlet of the fan 3. The first sound insulation box 2 and the sound-absorbing cotton 6 reduce the noise of the material colliding with the drying chamber 1. The second sound insulation box 5 and the sound-absorbing cotton 6 reduce the noise of the fan 3 during operation. At the same time, the setting of two sets of fans 3, one blowing and one exhausting, can reduce the load of a single fan 3, so that a single fan 3 can operate at a lower power to reduce noise. In addition, the extended air duct heating box 7 can make the heating of the air by the electric heating roller 9 more complete, so that the fan 3 can further reduce the power without reducing the drying efficiency. Furthermore, the lower power fan 3 produces a lower airflow speed, and the collision force between the material and the drying chamber 1 will be smaller, thereby reducing the noise in the drying chamber 1.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A dryer with noise reduction function, comprising a drying chamber (1); characterized in that: It also includes a fan (3) and a heating assembly. The heating assembly includes a heating box (7) and an electric heating rod (9). A first soundproof box (2) is provided on the outside of the drying box (1). The bottom of the drying box (1) and the first soundproof box (2) are conical. A certain space is left between the first soundproof box (2) and the drying box (1). A heating box (7) is provided on one side of the first soundproof box (2). An electric heating rod (9) is provided on the inside of the heating box (7). The electric heating rod (9) is provided with multiple sets of Fans (3) are installed on both sides of the first soundproof box (2). One set of fans (3) blows air into the drying box (1), and another set of fans (3) draws air out of the first soundproof box (2). The air inlet of the blowing fan (3) and the air outlet of the drawing fan (3) are equipped with impedance composite silencers (4). A second soundproof box (5) is installed on the outside of both sets of fans (3). The inner walls of the second soundproof box (5) and the first soundproof box (2) are equipped with sound-absorbing cotton (6).

2. The dryer with noise reduction function according to claim 1, characterized in that: A control module (8) is provided on one side of the heating box (7). The control module (8) is electrically connected to the fan (3) and the electric heating rod (9). A display screen (801) and control buttons (802) are provided on the outside of the control module (8).

3. The dryer with noise reduction function according to claim 1, characterized in that: The bottom of the drying box (1) is provided with a discharge pipe (103), which passes through the bottom of the first soundproof box (2). The top of the first soundproof box (2) is provided with a feed pipe (102), and the top side wall of the drying box (1) is provided with an exhaust hole (101).

4. The dryer with noise reduction function according to claim 3, characterized in that: The feed pipe (102) and discharge pipe (103) are equipped with solenoid valves (104), which are electrically connected to the control module (8).

5. The dryer with noise reduction function according to claim 1, characterized in that: The inner side of the heating box (7) is provided with a guide plate (703). The length of the guide plate (703) is less than the width of the heating box (7). There are multiple sets of guide plates (703) arranged in an alternating manner. The guide plate (703) divides the internal space of the heating box (7) into a winding air duct.

6. The dryer with noise reduction function according to claim 5, characterized in that: One end of the air duct is provided with a blower pipe (701), one end of which is connected to the air outlet of the blower (3) used for blowing air, and the other end of the air duct is provided with an air inlet pipe (702), one end of which is connected to the bottom conical part of the drying box (1).

7. The dryer with noise reduction function according to claim 1, characterized in that: The fan (3) used for ventilation has an exhaust pipe (201) at the air inlet end. One end of the exhaust pipe (201) has a diversion pipe (202). The diversion pipe (202) is a one-to-four pipe and is connected to the four walls of the first soundproof box (2). The sound-absorbing cotton (6) is provided with a clearance hole (203) at the connection between it and the diversion pipe (202).

Images