Microwave dryer for drying shiitake mushrooms

Abstract

The utility model discloses a microwave drying machine for drying shiitake mushrooms, which comprises a reversing end frame and a power end frame, a bridge body and a conveyor belt are respectively arranged between the power end frame and the reversing end frame, the microwave drying machine further comprises a dispersing mechanism, a drying mechanism and a microwave drying mechanism, a suppressor is arranged on the outer wall of the top, close to the reversing end frame, of the bridge body, a cooling section is arranged on the outer wall of the top, close to the power end frame, of the bridge body, eight microwave heating boxes are arranged on the outer wall of the top of the bridge body, magnetron assembly boxes are arranged on the outer walls of the tops of the microwave heating boxes, and the magnetron assembly boxes are arranged on the outer walls of the tops of the microwave heating boxes. And a top cover is arranged on the outer wall of the top of the magnetron assembly box. The microwave drying machine for drying the shiitake mushrooms is provided with a high-reliability exhaust system, temperature rise and moisture removal of the shiitake mushrooms are facilitated, heat can be continuously discharged, machine faults caused by too high temperature are avoided, and the technical effects of orderly dispersing the conveyed shiitake mushrooms and uniformly heating the shiitake mushrooms can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave dryers, in particular to a microwave dryer used for drying mushrooms. Background Art

[0002] Microwave dryer is a device that uses microwave energy to heat and dry mushrooms. It has the advantages of high efficiency, speed, uniformity, energy saving and environmental protection. It is widely used in food, chemical, pharmaceutical and other industries.

[0003] The patent document with application number 201921173713.2 discloses a microwave dryer for drying and killing insects in agricultural products, which includes: a box, a conveying device, a magnetron, a hot air circulation device and a water vapor collection device. The conveying device is fixedly installed in the box, and the conveying device includes a drive motor, a roller and a conveyor belt. Two of the drive motors are fixedly installed on one side of the box, and one side of the two drive motors is fixedly connected to the roller. The five rollers are fixedly connected to the conveyor belt. Ten magnetrons are fixedly installed on the top and bottom of the box respectively, and the hot air circulation device is fixedly installed in the box.

[0004] However, when using traditional microwave dryers for drying mushrooms, if the exhaust system is unreliable, it will be detrimental to the heating and dehumidification of the mushrooms, and the heat generated by the microwave components when working cannot be continuously discharged. Excessive temperature can easily cause the microwave dryer to malfunction. For example: the working principle of the microwave dryer is mainly to use the microwave energy generated by the microwave generator, which is transmitted to the drying box through the microwave pipe to evenly heat the mushrooms, so that the moisture in them evaporates quickly to achieve the purpose of drying. If the exhaust system is not strong during operation, the heat and moisture inside the workpiece cannot be dissipated, and the high temperature can easily cause the machine to malfunction, and the safety is not high. Utility Model Content

[0005] The utility model discloses a microwave dryer for drying shiitake mushrooms, aiming to solve the technical problems that when a conventional microwave dryer for drying shiitake mushrooms is used, if the exhaust system is unreliable, it will be unfavorable for heating and dehumidifying the shiitake mushrooms, the heat generated by the microwave components when working cannot be continuously discharged, and the microwave dryer may easily malfunction due to excessive temperature.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A microwave drying machine for drying shiitake mushrooms, comprising a reversing end frame and a power end frame, wherein a bridge body and a conveyor belt are respectively provided between the power end frame and the reversing end frame, and further comprising:

[0008] Dispersing mechanism: The dispersing mechanism is used to disperse the mushrooms;

[0009] A suppressor is provided on the top outer wall of the bridge body near the reversing end frame, a cooling section is provided on the top outer wall of the bridge body near the power end frame, eight microwave heating boxes are provided on the top outer wall of the microwave heating boxes, a magnetron assembly box is provided on the top outer wall of the microwave heating boxes, and a top cover is provided on the top outer wall of the magnetron assembly box. A dehumidification duct is provided on one outer wall of the magnetron assembly box, heat exhaust vents are provided on the bottom outer wall of the microwave heating box and the top outer wall of the top cover, a dehumidification vent is provided on one side of the top outer wall of the magnetron assembly box, and a power supply rack is provided on one outer wall of the microwave heating box.

[0010] In this solution, the mushrooms are transported on a conveyor belt and evenly heated in a microwave heating box, so that the moisture in the mushrooms evaporates quickly to achieve the purpose of drying. The magnetron assembly box ensures the uniformity of the microwave field intensity, and the suppressor prevents the leakage of microwave energy. The heated and dried mushrooms are cooled in a cooling section. The heat exhaust port and moisture exhaust port on the microwave heating box, as well as the moisture exhaust duct with a flange connection welded on the magnetron assembly box, facilitate the installation of centrifugal fans and pipes to form an exhaust system, which discharges the heat generated by the magnetron and variable frequency power supply during operation. The highly reliable exhaust system is not only beneficial to the heating and dehumidification of the mushrooms, but also to the continuous discharge of heat generated by the microwave components during operation, avoiding machine failure caused by excessive temperature.

[0011] In a preferred solution, a feed hopper is provided on one side outer wall of the reversing end frame, a discharge hopper is provided on one side outer wall of the power end frame, a mounting plate is provided on one side outer wall of the microwave heating box close to the suppressor, one side of the bottom outer wall of the mounting plate is connected to a limit plate by a hinge, one side outer wall of the limit plate is connected to the inlet end of the microwave heating box, two reset springs are connected between the mounting plate and the limit plate, and limit blocks distributed at equal distances are provided on the bottom outer wall of the limit plate.

[0012] By adopting the above technical solution, the mushrooms are fed through a feed hopper and then conveyed on a conveyor belt to a microwave heating box for heating and drying. During this process, the limit plate evacuates the mushrooms under the action of a reset spring, and under the guidance of the limit block, the mushrooms are dispersed to the inlet end of the microwave heating box. The distance between the limit plate and the microwave heating box can only allow one mushroom to pass, so that the dispersed individual mushrooms are introduced into the microwave heating box and heated evenly, so that the mushrooms will not accumulate and are dispersed in an orderly manner. The dispersion effect is good, which is more conducive to the subsequent operation of the microwave heating box. After processing is completed, the material is discharged from the discharge hopper.

[0013] As can be seen from the above, a microwave drying machine for drying shiitake mushrooms includes a reversing end frame and a power end frame, wherein a bridge body and a conveyor belt are respectively provided between the power end frame and the reversing end frame, and further includes:

[0014] Dispersing mechanism: The dispersing mechanism is used to disperse the mushrooms;

[0015] A suppressor is provided on the top outer wall of the bridge body near the reversing end frame, a cooling section is provided on the top outer wall of the bridge body near the power end frame, eight microwave heating boxes are provided on the top outer wall of the microwave heating box, a magnetron assembly box is provided on the top outer wall of the magnetron assembly box, a top cover is provided on the top outer wall of the magnetron assembly box, a dehumidification duct is provided on one side outer wall of the magnetron assembly box, a heat exhaust port is provided on the bottom outer wall of the microwave heating box and the top outer wall of the top cover, a dehumidification port is provided on one side of the top outer wall of the magnetron assembly box, and a power supply rack is provided on one side outer wall of the microwave heating box. The microwave dryer for drying shiitake mushrooms provided by the utility model has a highly reliable exhaust system, which is conducive to the heating and dehumidification of shiitake mushrooms, and can also continuously discharge heat to avoid machine failure caused by excessive temperature. The transported shiitake mushrooms can be orderly dispersed and heated evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a front view showing the overall structure of a microwave drying machine for drying mushrooms.

[0017] Figure 2 The utility model is a top view of the overall structure of a microwave dryer for drying mushrooms.

[0018] Figure 3 This is an enlarged view of the limiting plate structure of a microwave dryer for drying shiitake mushrooms proposed in the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the limit block structure of a microwave dryer for drying mushrooms.

[0020] In the attached figure: 1. feed hopper; 2. reversing end frame; 3. power end frame; 4. conveyor belt; 5. suppressor; 6. microwave heating box; 7. mounting plate; 8. furnace door; 9. bridge body; 10. top cover; 11. magnetron assembly box; 12. dehumidification air duct; 13. cooling section; 14. discharge hopper; 15. power supply frame; 16. heat exhaust port; 17. dehumidification port; 18. limit plate; 19. reset spring; 20. limit block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0022] The utility model discloses a microwave dryer for drying shiitake mushrooms. The microwave dryer is mainly used in conventional microwave dryers for drying shiitake mushrooms. If the exhaust system is unreliable, it will be detrimental to the heating and dehumidification of the shiitake mushrooms, and the heat generated by the microwave components during operation cannot be continuously discharged. Excessive temperature may easily cause the microwave dryer to malfunction.

[0023] Reference Figure 1 and Figure 2 A microwave drying machine for drying shiitake mushrooms includes a reversing end frame 2 and a power end frame 3, a bridge body 9 and a conveyor belt 4 are respectively provided between the power end frame 3 and the reversing end frame 2, and further includes:

[0024] Dispersing mechanism: The dispersing mechanism is used to disperse the mushrooms;

[0025] A suppressor 5 is provided on the top outer wall of the bridge body 9 near the reversing end frame 2, a cooling section 13 is provided on the top outer wall of the bridge body 9 near the power end frame 3, eight microwave heating boxes 6 are provided on the top outer wall of the microwave heating box 6, a magnetron assembly box 11 is provided on the top outer wall of the magnetron assembly box 11, a top cover 10 is provided on the top outer wall of the magnetron assembly box 11, a dehumidification duct 12 is provided on one side outer wall of the magnetron assembly box 11, a heat exhaust port 16 is provided on the bottom outer wall of the microwave heating box 6 and the top outer wall of the top cover 10, a dehumidification port 17 is provided on one side of the top outer wall of the magnetron assembly box 11, and a power supply rack 15 is provided on one side outer wall of the microwave heating box 6.

[0026] During the specific working process, the mushrooms are transported on the conveyor belt 4 and transported to the microwave heating box 6 for uniform heating, so that the moisture of the mushrooms evaporates quickly to achieve the purpose of drying. The magnetron assembly box 11 is installed on the microwave heating box 6, and a cast aluminum rectangular waveguide is used to feed microwave energy from the magnetron to the microwave heating box 6 from top to bottom. After scientific calculation and precise network analysis, the power density level difference distribution in the microwave heating box 6 ensures the uniformity of the microwave field intensity. The suppressor 5 can prevent the leakage of microwave energy. The heated and dried mushrooms are cooled in the cooling section 13. The heat exhaust port 16 and moisture exhaust port 17 on the microwave heating box 6, and the moisture exhaust duct 12 with a flange connection welded on the magnetron assembly box 11 are convenient for installing a centrifugal fan and pipelines to form an exhaust system to discharge the heat generated by the magnetron and the variable frequency power supply during operation.

[0027] Among them, stainless steel rollers are provided inside the microwave heating box 6, and the conveyor belt 4 is supported on the circumferential outer wall of the stainless steel rollers. In this way, the conveyor belt 4 is used to transport mushrooms, and the stainless steel rollers are used to support the conveyor belt 4. In actual use, the conveyor belt 4 adopts a food-grade cloth-like glass fiber PTFE conveyor belt with a width of 800mm. It has significant advantages in food safety, high temperature resistance, corrosion resistance, physical properties, operating efficiency and customized services. It is an ideal conveyor belt choice for the food processing industry.

[0028] Among them, the microwave heating box 6 is made of 304#1.5mm stainless steel plate, and 8 microwave heating boxes 6 are connected in series to form a multi-mode cavity resonator. In this way, the microwave heating box 6 has excellent corrosion resistance, good processing performance, high temperature resistance, aesthetics and durability, and safety. Multiple microwave heating boxes 6 can heat evenly, energy-saving and efficient.

[0029] Among them, the power end frame 3 and the power supply frame 15 are both made of welded stainless steel square tubes, the suppressor 5 is made of aluminum plate with a thickness of 2.0 mm, and the top cover 10 of the microwave power supply frame 15 is a heat exhaust hood made of stainless steel plate, which is convenient for installing centrifugal fans and pipes to form an exhaust system.

[0030] Reference Figure 1 and Figure 3 In a preferred embodiment, a furnace door 8 is provided on one side outer wall of the microwave heating box 6, and the door frame of the furnace door 8 is made of stainless steel square tube. A lighting lamp is provided on the top of the microwave heating box 6.

[0031] Specifically, the oven door 8 adopts a precise anti-microwave leakage choke device and is equipped with a travel switch (with an automatic power-off protection function when the door is opened). A lighting lamp is installed on the top of the box. By opening the oven door 8, it is convenient to observe the changes of the mushrooms in the microwave heating box 6, inspect and clean them.

[0032] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In a preferred embodiment, a feed hopper 1 is provided on one side outer wall of the reversing end frame 2, a discharge hopper 14 is provided on one side outer wall of the power end frame 3, and a mounting plate 7 is provided on one side outer wall of a microwave heating box 6 close to the suppressor 5. One side of the bottom outer wall of the mounting plate 7 is connected to a limiting plate 18 by a hinge, and one side outer wall of the limiting plate 18 is connected to the inlet end of the microwave heating box 6. Two return springs 19 are connected between the mounting plate 7 and the limiting plate 18, and limit blocks 20 distributed at equal distances are fixedly connected to the bottom outer wall of the limiting plate 18.

[0033] Specifically, the mushrooms are fed through the feed hopper 1 and then conveyed on the conveyor belt 4 to the microwave heating box 6 for heating and drying. During this process, the limit plate 18 evacuates the mushrooms under the action of the return spring 19, and under the guidance of the limit block 20, the mushrooms are dispersed to the inlet end of the microwave heating box 6. The distance between the limit plate 18 and the microwave heating box 6 can only pass one mushroom, so that the dispersed single mushrooms are introduced into the microwave heating box 6 for uniform heating, which is more conducive to the subsequent operation of the microwave heating box 6. After processing, they are discharged from the discharge hopper 14.

[0034] Among them, several limit blocks 20 are symmetrically distributed in an "eight" shape, and the limit plate 18 is used in conjunction with the limit block 20. In this way, the "eight"-shaped limit block 20 becomes wider from the starting end to the terminal end, so that the mushrooms are arranged in an orderly manner and dispersed without piling up at the inlet end. The cooperation between the limit plate 18 and the limit block 20 allows the mushrooms to enter the microwave heating box 6 and be arranged neatly, and the heating is more even.

[0035] Working principle: When in use, the mushrooms are fed from the feed hopper 1 to the conveyor belt 4. At the first microwave heating box 6, the limit plate 18 squeezes and evacuates the mushrooms under the action of the return spring 19. Under the guidance of the limit block 20, the mushrooms are dispersed to the inlet end of the microwave heating box 6, so that the dispersed individual mushrooms are introduced into the microwave heating box 6 and heated evenly, so that the moisture of the mushrooms evaporates quickly to achieve the purpose of drying. The magnetron assembly box 11 ensures the uniformity of the microwave field intensity, and the suppressor 5 can prevent the leakage of microwave energy. The heated and dried mushrooms are cooled in the cooling section 13 and finally discharged from the discharging hopper 14. The heat exhaust port 16 and the moisture exhaust port 17 on the microwave heating box 6, and the moisture exhaust duct 12 with a flange connection welded on the magnetron assembly box 11 continuously discharge the heat generated during operation, which is beneficial to the heating and moisture exhaust of the mushrooms.

[0036] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A microwave drying machine for drying shiitake mushrooms, comprising a reversing end frame (2) and a power end frame (3), wherein a bridge body (9) and a conveyor belt (4) are respectively provided between the power end frame (3) and the reversing end frame (2), characterized in that: Also includes: Dispersing mechanism: The dispersing mechanism is used to disperse the mushrooms; A suppressor (5) is provided on the top outer wall of the bridge body (9) close to the reversing end frame (2), a cooling section (13) is provided on the top outer wall of the bridge body (9) close to the power end frame (3), eight microwave heating boxes (6) are provided on the top outer wall of the microwave heating box (6), a magnetron assembly box (11) is provided on the top outer wall of the magnetron assembly box (11), a top cover (10) is provided on the top outer wall of the magnetron assembly box (11), a dehumidification duct (12) is provided on one side outer wall of the magnetron assembly box (11), a heat exhaust port (16) is provided on the bottom outer wall of the microwave heating box (6) and the top outer wall of the top cover (10), a dehumidification port (17) is provided on one side of the top outer wall of the magnetron assembly box (11), and a power supply rack (15) is provided on one side outer wall of the microwave heating box (6).

2. A microwave dryer for drying shiitake mushrooms according to claim 1, characterized in that: A stainless steel roller is provided inside the microwave heating box (6), and the conveyor belt (4) is supported on the circumferential outer wall of the stainless steel roller.

3. A microwave dryer for drying shiitake mushrooms according to claim 2, characterized in that: The microwave heating box (6) is made of 304#1.5mm stainless steel plate, and eight microwave heating boxes (6) are connected in series to form a multi-mode cavity resonator.

4. A microwave dryer for drying shiitake mushrooms according to claim 3, characterized in that: The power end frame (3) and the power supply frame (15) are both formed by welding stainless steel square tubes, and the suppressor (5) is formed by an aluminum plate with a thickness of 2.0 mm.

5. A microwave drying machine for drying shiitake mushrooms according to claim 4, characterized in that: A furnace door (8) is provided on one side outer wall of the microwave heating box (6), and a door frame of the furnace door (8) is made of a stainless steel square tube. A lighting lamp is provided on the top of the microwave heating box (6).

6. A microwave dryer for drying shiitake mushrooms according to claim 1, characterized in that: A feed hopper (1) is provided on one side outer wall of the reversing end frame (2), a discharge hopper (14) is provided on one side outer wall of the power end frame (3), a mounting plate (7) is provided on one side outer wall of a microwave heating box (6) close to the suppressor (5), one side of the bottom outer wall of the mounting plate (7) is connected to a limiting plate (18) via a hinge, one side outer wall of the limiting plate (18) is connected to the inlet end of the microwave heating box (6), two return springs (19) are connected between the mounting plate (7) and the limiting plate (18), and limiting blocks (20) distributed at equal distances are provided on the bottom outer wall of the limiting plate (18).

7. A microwave dryer for drying shiitake mushrooms according to claim 6, characterized in that: A plurality of the limit blocks (20) are symmetrically distributed in an "eight" shape, and the limit plate (18) is used in conjunction with the limit blocks (20).

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