Wood shaving material drying equipment

Abstract

The utility model discloses wood shaving material drying equipment which comprises a drying barrel and a supporting frame, and the supporting frame is fixedly connected to the bottom of the drying barrel. A feed port is formed in the top of the drying barrel, and a discharge port is formed in the bottom of the drying barrel; at least two groups of microwave generator systems are arranged at the top of the drying barrel; each group of microwave generator system comprises a waveguide and a magnetron; a motor is arranged in the center of the end face of one side of the drying barrel, the two sides of the motor are each provided with a fixed connecting column, and the motor is fixedly connected to the outer surface of the drying barrel through the two fixed connecting columns; the driving output end of the motor is fixedly connected with a rotary reflecting plate device; and the rotary reflecting plate device comprises a turntable, a rotary connecting rod and a reflecting plate. According to the designed microwave generator system, microwaves penetrate through the interior of materials, water molecules in the materials vibrate and heat, and internal and external synchronous drying is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shaving board processing technical field especially relates to a shaving material drying equipment. BACKGROUND

[0002] The shaving board is a kind of composite board by wood chip and adhesive pressing.The raw material of shaving board is usually wood chip, shaving etc., and the initial moisture content of these materials is 40%~60% during the production process of shaving board.If the wood chip and shaving are directly glued and bonded, the high water content will dilute the adhesive, resulting in insufficient curing of glue layer, the adhesive cannot effectively penetrate wood fiber, and the board is easy to delaminate.In the subsequent hot-pressing process, the steam pressure breaks through the structure of the board, forming a bulge or crack, which causes the yield of shaving board to drop sharply, and then affects the comprehensive cost.In order to achieve the rational effect, it is usually necessary to dry the wood chip, shaving and other materials of shaving board to make the moisture content 2%~5%.In the prior art, air drying or drum drying is usually used, and both drying methods are drying materials by heating air or container, and most of the heat is lost with air, so the energy consumption is high. SUMMARY

[0003] The utility model discloses a kind of shaving material drying equipment to solve the technical problem of overcoming high energy consumption when material is dried.

[0004] To solve the above technical problems, the utility model provides a kind of shaving material drying equipment, including drying barrel and support frame, the support frame is fixedly connected at the bottom of the drying barrel;The top of the drying barrel is equipped with inlet, and the bottom is equipped with and outlet;

[0005] The top of the drying barrel is equipped with at least two groups of microwave generator system;

[0006] Each group of the microwave generator system includes waveguide and magnetron, the magnetron is detachably connected at one end of the waveguide, and the other end of the waveguide is connected with the inside of the drying barrel;

[0007] The central position of one side end surface of the drying barrel is equipped with motor, and each of the two sides of the motor is equipped with a fixed connection column, the motor is fixedly connected on the outer surface of the drying barrel by two fixed connection columns;

[0008] The drive output end of the motor is fixedly connected with rotary reflection plate device, and the rotary reflection plate device includes rotary disc, rotary connecting rod and reflection plate.

[0009] Preferably, in the technical scheme above, the driving output end of the motor is fixedly connected with the rotating disc, and at least three rotating connecting rods are evenly arranged on the rotating disc, and each end of each rotating connecting rod away from the rotating disc is fixedly connected with a reflecting plate.

[0010] Preferably, in the technical scheme above, the inner wall of the drying barrel is smooth and made of stainless steel.

[0011] Preferably, in the technical scheme above, the reflecting plate is a stainless steel spiral twisted blade with a smooth surface.

[0012] Preferably, in the technical scheme above, a metal cover plate is arranged on the feeding port, and a metal cover plate is arranged on the discharging port, and the metal cover plates are respectively hingedly connected to the mouth portions of the feeding port and the discharging port through hinges.

[0013] Preferably, in the technical scheme above, a dehumidifying fan is arranged on the top of one side end surface of the drying barrel, a first metal mesh shielding layer is arranged on the inner side of the dehumidifying fan, and the first metal mesh shielding layer is fixedly connected with the frame of the dehumidifying fan.

[0014] Preferably, in the technical scheme above, an observation window is arranged on the bottom of one side of the drying barrel, and a second metal mesh shielding layer is arranged on the inner side of the observation window.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The microwave generator system provided by the present application utilizes microwave penetration into the material, causes the internal water molecules to vibrate and generate heat, realizes synchronous drying inside and outside, directly heats and dries the individual material, avoids loss of excessive heat and causes waste of energy.

[0017] The rotating reflecting plate device arranged in the drying barrel, on the one hand, periodically changes the microwave reflection path of the rotating metal reflecting plate, forces the electromagnetic waves to superimpose in different directions, destroys the stability of the standing wave, can prevent the occurrence of local high-energy "hot spots" and low-energy "cold spots" of the microwave in the closed cavity, and causes the local overheating and carbonization of the material. On the other hand, the rotating reflecting plate can stir the material layer during drying, avoids the non-uniformity of the drying degree between regions, and the stirring can promote the microwave absorption efficiency of the bottom material, thereby improving the drying efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the present application;

[0019] Figure 2 It is a side view of the present application;

[0020] Figure 3 Figure 1 is a schematic view of the internal structure of the shavings material drying equipment of the present application;

[0021] Figure 4 Figure 1 is a schematic view of the internal structure of the shavings material drying equipment of the present application; Figure 1 Figure 1 is a schematic view of the internal structure of the shavings material drying equipment of the present application;

[0022] Main figure mark explanation:

[0023] 1-drying barrel, 2-support frame, 3-feeding port, 4-discharging port, 5-motor, 6-wet air exhaust fan, 8-microwave generator system, 81-waveguide, 82-magnetron, 9-rotary reflection plate device, 10-observation window, 31-feeding port metal cover plate, 41-discharging port metal cover plate, 51-fixed connection column, 61-first metal mesh shielding layer, 91-rotating disc, 92-rotating connecting rod, 93-reflection plate, 101-second metal mesh shielding layer. Specific implementation

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] As Figures 1 to 4As shown, the utility model relates to a kind of shaving material drying equipment, including drying barrel 1 and support frame 2, the support frame 2 is fixedly connected at the bottom of the drying barrel 1;The top of the drying barrel 1 is equipped with feed inlet 3, bottom is equipped with and discharge port 4;The top of the drying barrel 1 is equipped with at least two groups of microwave generator system 8;Each group of the microwave generator system 8 includes waveguide 81 and magnetron 82, the magnetron 82 is detachably connected at one end of the waveguide 81, the other end of the waveguide 81 is connected with the inside of the drying barrel 1;Magnetron 82 can generate microwave energy, in this embodiment, the frequency selection of magnetron 82 is 2450MHz, and the microwave absorption rate of this frequency is high, more suitable for the drying of shaving board material.Waveguide 81 can transmit microwave from magnetron to drying barrel 1, in this embodiment, waveguide 81 is preferably aluminum rectangular waveguide, and inner wall is polished to mirror surface level smoothness, which is beneficial to reduce microwave transmission loss.The central position of the side end surface of the drying barrel 1 is equipped with motor 5, and one fixed connecting column 51 is arranged on the two sides of the motor 5, and the motor 5 is fixedly connected to the outer surface of the drying barrel 1 by the two fixed connecting columns 51;The driving output end of the motor 5 is fixedly connected with rotating reflector plate device 9, and the rotating reflector plate device 9 includes rotating disc 91, rotating connecting rod 92 and reflector plate 93.The reflector plate 93 is stainless steel helical twisted blade with smooth surface.The driving output end of the motor 5 is fixedly connected with the rotating disc 91, and at least three rotating connecting rods 92 are evenly arranged on the rotating disc 91, and the reflector plate 93 is fixedly connected to the end of each rotating connecting rod 92 away from the rotating disc 91.Microwave can form standing wave in closed cavity, resulting in uneven energy distribution, local high-energy "hot spot" and low-energy "cold spot" appear;"Hot spot" refers to the region with maximum electric field intensity, which can easily cause local overheating and charring of material;"Cold spot" refers to the region with minimum electric field intensity, which has low microwave absorption rate, resulting in low drying efficiency.Rotating reflector plate device 9 can dynamically reflect microwave, and the rotation of reflector plate can periodically change the microwave reflection path, thereby forcing electromagnetic waves to superimpose in different directions, destroying the stability of standing wave and eliminating the occurrence of "cold spot" and "hot spot".In this embodiment, the reflector plate 93 is preferably helical twisted blade, which can improve the change range of reflection angle.The blade width is 1 / 4~1 / 2 of the wavelength of microwave, therefore, the blade width of the reflector plate 93 in this embodiment is preferably controlled within 3~6cm.In addition, the rotating reflector plate can stir the material layer in the drying barrel 1, and the material in each region of the barrel can be heated and dried by microwave through stirring the material, avoiding the difference in drying degree between bottom material and top material.The inner wall of the drying barrel 1 is smooth stainless steel.The wavelength of the microwave is usually in centimeter level, and the wavelength of the microwave emitted by the microwave generator system 8 is about 12.2 cm in the embodiment. When the surface roughness (Ra) is less than 1 / 8 (about 1.5 cm) of the wavelength, the reflection is mainly specular reflection; and when the surface roughness (Ra) exceeds the threshold, the reflection is diffuse reflection, which affects the transmission and reflection efficiency. When the surface roughness (Ra) of the stainless steel is less than 1.5 cm, the microwave energy is concentrated and directed reflected, and the reflection efficiency can be more than 95%; when the surface roughness (Ra) of the stainless steel is greater than 1.5 cm, the energy is scattered to the non-target area, and the reflection efficiency is reduced to 70%-80%, resulting in uneven heating. If there are local recesses or protrusions, the microwave propagation path will be disturbed, forming standing wave nodes, resulting in uneven distribution of energy in the cavity. Therefore, the inner wall of the drying barrel 1 and the reflection plate 93 in the embodiment are preferably smooth stainless steel materials, which can improve the microwave reflection efficiency and thus improve the drying rate of the material.

[0026] In the embodiment, the feeding port 3 is provided with a feeding port metal cover plate 31, and the discharging port 4 is provided with a discharging port metal cover plate 41. The feeding port metal cover plate 31 and the discharging port metal cover plate 41 are respectively hinged to the port of the feeding port 3 and the discharging port 4 through hinges. The feeding port metal cover plate 31 and the discharging port metal cover plate 41 can provide a relatively closed drying space to avoid microwave leakage. The top of one side end surface of the drying barrel 1 is provided with a dehumidification fan 6, the inner side of the dehumidification fan 6 is provided with a first metal mesh shielding layer 61, and the first metal mesh shielding layer 61 is fixedly connected with the frame of the dehumidification fan 6. The dehumidification fan 6 can exhaust the water vapor generated during drying in the drying barrel 1 to maintain low humidity in the cavity. The bottom of one side of the drying barrel 1 is provided with an observation window 10, and the inner side of the observation window 10 is provided with a second metal mesh shielding layer 101. The observation window 10 can observe the color and state of the material in the drying barrel 1, so as to control the drying time and avoid over-drying. When the microwave leaks, the microwave generates heat through the dipole rotation of water molecules. When the human body is exposed to a certain leakage field strength, it may cause skin burns or deep tissue damage, and in severe cases, it may cause damage to the eyes. Long-term low-dose leakage may interfere with the nervous system, causing headaches, insomnia, and even affecting the immune system. In addition, the leaked microwave does not participate in the heating of the material, which not only wastes energy, but also causes the microwave to reflect back to the magnetron, causing abnormal fluctuations in the working current, accelerating the aging of the cathode, and causing the magnetron to overload and shorten the service life. The first metal mesh shielding layer 61 and the second metal mesh shielding layer 101 can avoid microwave leakage and harm to the human body and the influence on the equipment.

[0027] In operation, first open the feed inlet metal cover plate 31 of the feed inlet 3, put the material to be dried into the drying barrel 1, then close the feed inlet metal cover plate 31, start the motor 5 and start the microwave generator system 8, and simultaneously open the moisture removal fan 6. After a certain period of time, the operator checks the color and drying state through the observation window 10 under certain protection, if the drying is completed, first close the microwave generator system 8, let the motor 5 and the moisture removal fan 6 continue to work, extract the internal water vapor, and cool down, after the cooling is completed, open the discharge port metal cover plate 41, unload the dried material, and then perform a new round of material drying, and so on.

[0028] The microwave generator system of the utility model utilizes the microwave to penetrate the inside of the material, makes the internal water molecules vibrate and heat, realizes the synchronous drying inside and outside, directly heats and dries the material individual, avoids the loss of excessive heat, and causes the waste of energy consumption.

[0029] The rotating reflection plate device arranged in the drying barrel, on the one hand, the rotating metal reflection plate periodically changes the microwave reflection path, forces the electromagnetic wave to superimpose in different directions, destroys the standing wave stability, can prevent the microwave from appearing local high-energy "hot spot" and low-energy "cold spot" in the closed cavity, causes the material to be locally overheated and carbonized. On the other hand, the rotating reflection plate can stir the material layer during drying, avoids the drying degree of each region to be not uniform, and the stirring can promote the microwave absorption efficiency of the bottom material, thereby improving the drying efficiency.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or part of the technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A shaving material drying device, characterized in that: it comprises a drying barrel (1) and a supporting frame (2), the supporting frame (2) is fixedly connected to the bottom of the drying barrel (1); the top of the drying barrel (1) is provided with an inlet (3), and the bottom is provided with an outlet (4); the top of the drying barrel (1) is provided with at least two groups of microwave generator systems (8); each group of microwave generator systems (8) comprises a waveguide (81) and a magnetron (82), the magnetron (82) is detachably connected to one end of the waveguide (81), and the other end of the waveguide (81) is in communication with the inside of the drying barrel (1); a motor (5) is arranged at the central position of one side end surface of the drying barrel (1), two fixed connecting columns (51) are arranged on the two sides of the motor (5), and the motor (5) is fixedly connected to the outer surface of the drying barrel (1) through the two fixed connecting columns (51); the driving output end of the motor (5) is fixedly connected with a rotating reflection plate device (9), and the rotating reflection plate device (9) comprises a rotating disc (91), a rotating connecting rod (92) and a reflection plate (93). the driving output end of the motor (5) is fixedly connected with the rotating disc (91), and at least three rotating connecting rods (92) are uniformly arranged on the rotating disc (91), and the reflection plate (93) is fixedly connected to the end of each rotating connecting rod (92) away from the rotating disc (91).

2. The shaving material drying apparatus according to claim 1, characterized by: The inner wall of the drying barrel (1) is smooth and made of stainless steel.

3. The shavings material drying apparatus according to claim 1, characterized in that: The reflection plate (93) is a stainless steel spiral twisted blade with a smooth surface.

4. The shavings material drying apparatus according to claim 2, characterized in that: A metal cover plate (31) is arranged on the inlet (3), a metal cover plate (41) is arranged on the outlet (4), and the metal cover plate (31) and the metal cover plate (41) are respectively hinged to the mouth of the inlet (3) and the outlet (4) through hinges.

5. The shavings material drying apparatus according to claim 1, characterized by: A dehumidification fan (6) is arranged at the top of one side end surface of the drying barrel (1), a first metal mesh shielding layer (61) is arranged on the inner side of the dehumidification fan (6), and the first metal mesh shielding layer (61) is fixedly connected with the frame of the dehumidification fan (6).

6. The shavings material drying apparatus according to claim 1, characterized by: A viewing window (10) is arranged at the bottom of one side of the drying barrel (1), and a second metal mesh shielding layer (101) is arranged on the inner side of the viewing window (10).

7. The shaving material drying apparatus according to claim 6, characterized in that: ​

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