Wood microwave drying device

Abstract

The utility model discloses a wood microwave drying device which comprises a drying box, a plurality of microwave slot antennas are arranged on the side wall of the drying box, the front side and the rear side of the drying box are each provided with a lifting door capable of lifting up and down, a roller conveyor is arranged at the bottom of the drying box, and an electric push rod is arranged at the top in the drying box. A straightening plate is arranged at the bottom of the electric push rod, a plurality of air holes are formed in the straightening plate, a moisture discharging hole is formed in the top of the drying box, an air exchange hole is formed in one side of the drying box, and the moisture discharging hole is connected with the air exchange hole sequentially through a hot air circulating pipeline, a hot air circulating fan and a heat exchanger; an electric push rod is arranged at the top in the drying box, a straightening plate is arranged at the bottom of the electric push rod, the electric push rod drives the straightening plate to move downwards, the straightening plate presses the wood, and in the drying process, the straightening plate presses the wood to prevent the wood from deforming, warping or bending.

Description

Technical Field

[0001] The utility model belongs to the technical field of microwave drying equipment, in particular to a wood microwave drying device. Background Art

[0002] When drying and heating wood, microwave drying and heating devices are often needed. The uniformity of microwave low-temperature heating and small thermal deformation are used to dry and heat the wood.

[0003] Regarding the wood microwave drying device, in the prior art, after searching, the utility model patent with Chinese patent publication number CN204574735U discloses a microwave wood drying device, such as Figure 1 As shown, it mainly includes a drying box a, a door b is provided on the front side of the drying box a, a microwave transmitter is provided inside the drying box a, a slide rail c is provided at the bottom of the drying box a, and a placement rack d is provided on the slide rail c. When drying, the wood is placed on the placement rack and then dried and heated.

[0004] In the prior art, microwave drying devices for wood similar to the above-mentioned technical solutions have been found to have areas for improvement during actual implementation: when drying wood, the wood gradually loses moisture. During this process, the wood is prone to deformation, bending, and warping due to shrinkage, which affects the subsequent use of the wood. Utility Model Content

[0005] In view of the deficiencies and defects in the prior art, the purpose of the present utility model is to provide a wood microwave drying device, which solves the problem that the wood gradually loses moisture during drying in the prior art microwave drying device. During this process, the wood is easily deformed, bent, and warped due to shrinkage, which affects the subsequent use of the wood.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a wood microwave drying device, comprising a drying box, a plurality of microwave slit antennas are provided on the side walls of the drying box, a lifting door that can be lifted up and down is provided on the front and back sides of the drying box, a roller conveyor is provided at the bottom of the drying box, an electric push rod is provided at the top of the drying box, a straightening plate is provided at the bottom of the electric push rod, a plurality of air holes are provided on the straightening plate, a dehumidification hole is provided on the top of the drying box, and an air exchange hole is provided on one side of the drying box, and the dehumidification hole is connected to the air exchange hole in sequence through a hot air circulation pipe, a hot air circulation fan, and a heat exchanger.

[0007] As a further improvement of the present invention, a rectangular door frame is provided on both the front and rear sides of the drying box, the lifting door is connected to the rectangular door frame for up and down sliding, and the rectangular door frame is connected to the lifting door through a hydraulic rod.

[0008] As a further improvement of the present invention, the roller conveyor includes multiple rollers, both ends of which are rotatably connected to the side walls of the drying box, and each roller is connected to a sprocket. The multiple sprockets are connected by chains, and one of the rollers is connected to the motor.

[0009] As a further improvement of the present invention, a water-absorbing film is provided below the roller conveyor in the drying box.

[0010] As a further improvement of the present invention, a plurality of supporting legs are provided at the bottom of the drying box.

[0011] As a further improvement of the present invention, a plurality of small grooves are provided on the bottom of the straightening plate.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. By installing lifting doors on both the front and rear sides of the drying box and a roller conveyor at the bottom of the drying box, the wood is placed on the roller conveyor from the front side. After drying, it is taken out from the lifting door on the rear side. The roller conveyor transports the wood from one side to the middle of the drying box and then to the other side.

[0014] In addition, an electric push rod is installed at the top of the drying box, and a straightening plate is installed at the bottom of the electric push rod. The electric push rod drives the straightening plate to move downward, and then the straightening plate presses on the wood. During the drying process, the straightening plate presses the wood to prevent deformation, warping, or bending. In addition, when the wood needs to be compressed, it can also be directly pressed by the straightening plate. The compact structure has multiple ventilation holes, which ensure the ventilation and drying effect of the wood while straightening.

[0015] By arranging dehumidification holes and ventilation holes on the drying box, and the dehumidification holes are connected to the ventilation holes in sequence through the hot air circulation pipe, the hot air circulation fan, the heat exchanger, etc., when drying the wood, the hot air circulation method can be used to send the moist heat in the drying box into the heat exchanger through the hot air circulation pipe and the hot air circulation fan. The moist hot air is condensed into dry hot air after passing through the heat exchanger and enters the microwave box for utilization. In this process, the incoming air is only about 5°C lower than the outlet air temperature and the temperature can be controlled. The heat is effectively utilized, thereby improving the drying efficiency of the wood.

[0016] 2. By providing a water-absorbing film under the roller conveyor in the drying box, it can absorb the hot and humid moisture generated during the drying process, reduce the moisture in the drying box, and improve the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1It is a structural diagram of the prior art;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0021] Figure 4 It is a structural diagram of the roller conveyor;

[0022] Figure 5 It is a structural diagram of a straight plate;

[0023] In the figure: 1. Drying box; 2. Microwave crack antenna; 3. Lifting door; 4. Roller conveyor; 41. Roller; 42. Sprocket; 43. Chain; 44. Motor; 5. Electric push rod; 6. Straightening plate; 7. Dehumidification hole; 8. Ventilation hole; 9. Hot air circulation duct; 10. Hot air circulation fan; 11. Heat exchanger; 12. Rectangular door frame; 13. Hydraulic rod; 14. Support leg; 15. Ventilation hole. DETAILED DESCRIPTION

[0024] The following is combined with Figure 2-5 The present invention will be described in further detail. For a clearer illustration, only the structures related to the present invention are shown in the figures.

[0025] For the convenience of description, the coordinate system is defined as follows Figure 1 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0026] The embodiment of the utility model discloses a wood microwave drying device. Figure 2 A wood microwave drying device includes a drying box 1, a plurality of supporting legs 14 are provided at the bottom of the drying box 1, a plurality of microwave crack antennas 2 are provided on the side walls of the drying box 1, and a lifting door 3 that can be lifted up and down is provided on the front and rear sides of the drying box 1. Specifically, a rectangular door frame 12 is provided on the front and rear sides of the drying box 1, and the lifting door 3 is connected to the rectangular door frame 12 in a sliding manner up and down, and the rectangular door frame 12 is connected to the lifting door 3 through a hydraulic rod 13.

[0027] The bottom of the drying box 1 is provided with a roller conveyor 4, specifically, Figure 4As shown, the roller conveyor 4 comprises multiple rollers 41, each of which is rotatably connected to the sidewalls of the drying box 1. Each roller 41 is connected to a sprocket 42, which is connected via a chain 43. One of the rollers 41 is connected to a motor 44. During operation, the motor 44 rotates the rollers 41. Once the rollers 41 rotate, the sprockets 42 and chains 43 drive the other rollers 41 to rotate, thereby conveying the wood. Furthermore, a moisture-absorbing membrane (not shown) is provided below the roller conveyor 4 within the drying box 1 to absorb moisture generated during the drying process, reducing humidity within the drying box 1 and improving the drying effect. The wood is placed on the roller conveyor 4 from the front. After drying is complete, the wood is removed through the rear lift door 3. The roller conveyor 4 then transports the wood from one side to the center of the drying box 1 and then to the other side.

[0028] In addition, if Figure 3 and Figure 5 As shown, an electric push rod 5 is provided at the top of the drying box 1, and a straightening plate 6 is provided at the bottom of the electric push rod 5. A plurality of air holes 15 are provided on the straightening plate 6, and a plurality of small grooves are provided at the bottom of the straightening plate 6.

[0029] like Figure 2 and Figure 3 As shown, the drying box 1 is provided with a dehumidification hole 7 on the top and a ventilation hole 8 on one side. The dehumidification hole 7 is connected to the ventilation hole 8 through a hot air circulation pipe 9, a hot air circulation fan 10 and a heat exchanger 11 in sequence.

[0030] The present invention comprises an electric push rod 5 provided at the top of a drying box 1, and a straightening plate 6 provided at the bottom of the electric push rod 5. The electric push rod 5 drives the straightening plate 6 to move downward, and the straightening plate 6 then presses on the wood. During the drying process, the straightening plate 6 presses the wood to prevent deformation, warping, or bending of the wood. In addition, when compression is required, the straightening plate 6 can be used to directly press the wood. The compact structure has multiple application scenarios. The straightening plate 6 is provided with a plurality of ventilation holes 15, thereby ensuring a ventilation and drying effect on the wood while straightening.

[0031] By arranging dehumidification holes 7 and ventilation holes 8 on the drying box 1, and the dehumidification holes 7 are connected to the ventilation holes 8 in sequence through the hot air circulation pipe 9, the hot air circulation fan 10, and the heat exchanger 11, when drying the wood, the hot air can be recycled to send the moist heat in the drying box 1 into the heat exchanger 11 through the hot air circulation pipe 9 and the hot air circulation fan 10. The moist hot air is condensed into dry hot air after passing through the heat exchanger 11 and enters the microwave box for utilization. In this process, the incoming air is only about 5°C lower than the outlet air temperature and the temperature can be controlled. The heat is effectively utilized, thereby improving the drying efficiency of the wood.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. It should be understood that the specific embodiments described here are only used to understand the present utility model and are not used to limit the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

Claims

1. A wood microwave drying device, comprising a drying box, wherein a plurality of microwave crack antennas are provided on the side walls of the drying box, characterized in that: The front and rear sides of the drying box are each provided with a lifting door that can be raised and lowered; a roller conveyor is provided at the bottom of the drying box; an electric push rod is provided at the top of the drying box; a straightening plate is provided at the bottom of the electric push rod; a plurality of ventilation holes are provided on the straightening plate; a dehumidification hole is provided at the top of the drying box; and a ventilation hole is provided on one side of the drying box. The dehumidification hole is connected to the ventilation hole in sequence through a hot air circulation pipe, a hot air circulation fan, and a heat exchanger.

2. A wood microwave drying device according to claim 1, characterized in that: A rectangular door frame is provided on both the front and rear sides of the drying box. The lifting door is connected to the rectangular door frame in an up-and-down sliding manner, and the rectangular door frame is connected to the lifting door through a hydraulic rod.

3. The wood microwave drying device according to claim 1, characterized in that: The roller conveyor includes a plurality of rollers, both ends of which are rotatably connected to the side walls of the drying box, and each roller is connected to a sprocket. The plurality of sprockets are connected by chains, and one of the rollers is connected to a motor.

4. The wood microwave drying device according to claim 1, characterized in that: A water absorbing film is provided below the roller conveyor in the drying box.

5. A wood microwave drying device according to any one of claims 1 to 4, characterized in that: The bottom of the drying box is provided with a plurality of supporting legs.

6. A wood microwave drying device according to any one of claims 1 to 4, characterized in that: A plurality of small grooves are provided on the bottom of the straightening plate.

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