Tunnel type microwave drying equipment and tunnel type microwave drying equipment for rubber tree seeds

Abstract

The utility model discloses tunnel type microwave drying equipment and rubber tree seed tunnel type microwave drying equipment adopting the same. The tunnel type microwave drying equipment comprises a drying channel (A), a conveying belt (17) and a tempering device (13), a microwave generator is arranged in the drying channel (A); different numbers of magnetrons are arranged in each microwave generator according to the heating temperature, each microwave generator is provided with a microwave power controller, and the conveying belt (17) sequentially penetrates through the drying channel (A) and the tempering device (13); a smoke detector is arranged below the drying channel (A); and the tempering device (13) is arranged behind the outlet of the drying channel (A). Materials on the conveying belt are subjected to multi-stage drying through the multiple microwave generators, it is guaranteed that the internal pressure of seeds is stable, and bursting is avoided; and meanwhile, the tempering device is arranged at the tail end of the drying channel, so that the material quality is prevented from being influenced by material surface shrinkage, hardening and browning.

Description

Technical Field

[0001] The utility model relates to the technical field of drying devices, in particular to tunnel type microwave drying equipment and tunnel type microwave drying equipment for rubber tree seeds using the equipment. Background Art

[0002] Dehumidification methods can be divided into three types according to the working principle: mechanical method, thermophysical method and physicochemical method. In general, thermophysical dehumidification is called drying. Drying is the process of using heat energy to vaporize the moisture (water or other solvents) in wet materials, and the water vapor or steam is taken away by air flow or removed by a vacuum pump to obtain a solid product. When drying wet materials, there are two drying processes. One is the surface vaporization process, in which heat is transferred from the surrounding environment to the surface of the material to evaporate the surface moisture; the other is the internal diffusion control process, in which the moisture inside the material is transferred to the surface of the material and then evaporated. The existing drying method is mainly heating drying, which uses heated gas to dry the seeds, that is, the surface vaporization process, but this method is high-temperature drying, which will cause the active substances of the dried material to denature and inactivate.

[0003] Microwave drying is different from traditional drying methods. Its heat conduction direction is the same as the water diffusion direction. Compared with traditional drying methods, it has the advantages of high drying rate, energy saving, high production efficiency, uniform drying, clean production, easy to realize automatic control and improve product quality. Therefore, it is increasingly valued in various fields of drying. Existing microwave dryers usually use a one-time drying method, which may cause damage to some specific drying objects.

[0004] Slow recovery refers to storing the material for a period of time during or after drying so that the moisture inside the material can be redistributed and become uniform due to heat and moisture exchange under the action of gradient difference. This reduces the internal stress impact caused by moisture migration during the drying process on the one hand, and avoids the excessive accumulation of surface heat caused by low moisture on the surface of the material on the other hand. The existing slow recovery method is usually air slow recovery, which places the material in the atmosphere and uses the atmospheric environment to exchange moisture and heat with the material. After a period of stillness, the internal moisture balance of the material is achieved. This slow recovery method takes a long time and will cause the growth of various microorganisms, which is far from meeting production needs. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel type microwave drying equipment to address the deficiencies of the prior art, which can achieve rapid drying and rapid slow recovery of materials through multi-stage microwave drying and a slow recovery device after drying, while ensuring the quality of the materials after drying.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model discloses a tunnel type microwave drying equipment, comprising a drying channel, a conveyor belt and a slow revival device; a microwave generator is arranged in the drying channel; each of the microwave generators is provided with a different number of magnetrons according to the heating temperature, each microwave generator is provided with a microwave power controller, the conveyor belt passes through the drying channel and the slow revival device in sequence; a smoke detector is arranged under the drying channel; the slow revival device is arranged behind the outlet of the drying channel.

[0008] The above structure uses multiple microwave generators to perform multi-stage drying on the materials on the conveyor belt to ensure that the internal pressure of the seeds is stable and will not burst. The smoke detector under the drying channel detects the smoke generated by the materials dropped from the conveyor belt to the bottom of the drying channel after long-term heating, and promptly reminds the staff to clean up. At the same time, a slow recovery device is set at the end of the drying channel, and the fan in the slow recovery device is used to quickly dissipate heat, so that after drying, the material undergoes heat and moisture exchange and redistribution under the action of the gradient difference, and tends to be uniform, avoiding deterioration of material quality due to excessive temperature difference, such as cracks, hardening, etc.

[0009] Furthermore, the number of magnetrons in each microwave generator decreases from the entrance to the exit of the drying channel, and the magnetrons in each microwave generator are evenly distributed on the upper inner wall of the microwave generator. A temperature sensor is provided in the microwave generator, and the temperature sensor is provided on the side wall of the microwave box.

[0010] In the above structure, the drying channel is composed of a plurality of detachable microwave boxes which are arranged in series on a conveyor belt. A microwave generator is arranged in each microwave box, and the microwave generator is arranged on the top of the microwave box to heat the material on the conveyor belt below. The microwave box can be increased or decreased according to the output. At the same time, a temperature sensor is arranged in the microwave box to monitor whether there is a large fluctuation in the temperature in the microwave box.

[0011] Furthermore, a dehumidification device is arranged above the drying channel, and the dehumidification device is connected with each microwave generator through a dehumidification pipeline.

[0012] Furthermore, moisture meters are respectively provided at the inlet and outlet of the drying channel, and an inactivation device is also provided at the inlet of the drying channel. The moisture meter at the outlet can display the moisture content lost by the dried material and the moisture content of the dried material after drying. The moisture meter at the outlet is connected to a moisture abnormality alarm.

[0013] Furthermore, a moisture meter at the outlet of the drying channel can input a desired moisture content value.

[0014] The above structure measures whether the moisture content after drying meets the requirements through moisture measuring instruments at the inlet and outlet of the drying channel.

[0015] Furthermore, a fan, a vacuum pump or a magnetron is provided in the slow recovery device.

[0016] The above structure can quickly slow down the dried material through the fan, reduce the internal thermal stress shock caused by drying, and avoid shrinkage, hardening and browning of the material surface that affect the quality of the material. It can also be slowed down by vacuum, using a vacuum pump to extract wet steam and hot air, while reducing the moisture content, so that the moisture in the center of the material gradually diffuses to the surface to achieve a new balance, and can also inhibit the occurrence of mold and insects in the material; it can also be slowed down by microwave, slowed down at an appropriate magnetron frequency, reducing the impact of uneven moisture distribution on the quality of the material surface cracking, and can quickly passivate or kill bacteria and parasites inside the material.

[0017] Furthermore, each microwave cabinet is provided with a side door.

[0018] In the above structure, when the smoke detector and the temperature sensor detect that the material has stayed in the microwave box for a long time, the side door is opened to take out the remaining material, so as to avoid affecting the drying effect and causing fire in the equipment.

[0019] Furthermore, the conveyor belt is a continuously variable speed conveyor belt.

[0020] Furthermore, a hoist is provided at the front end of the conveyor belt.

[0021] The utility model also discloses a tunnel type microwave drying device for rubber tree seeds, which adopts the tunnel type microwave drying device as described above.

[0022] Compared with the existing technology, the beneficial effects of the utility model are:

[0023] 1. The utility model uses multiple microwave generators to perform multi-stage drying on the materials on the conveyor belt to ensure that the internal pressure of the seeds is stable and will not burst. The smoke detector under the drying channel detects the smoke generated by the materials dropped from the conveyor belt to the bottom of the drying channel after long-term heating, and promptly reminds the staff to clean up; at the same time, a slow-release device is set at the end of the drying channel, so that the materials can quickly exchange heat and moisture under the action of the gradient difference after drying and redistribute them evenly, avoiding shrinkage, hardening and browning of the material surface and affecting the quality of the material.

[0024] 2. The utility model arranges a plurality of magnetrons in each microwave generator, and the number of magnetrons in each microwave generator can be set as needed to meet the drying requirements at different stages, and the magnetrons are arranged above the microwave generator to facilitate heating of the material on the conveyor belt below.

[0025] 3. The utility model detects that materials have been staying in the microwave box for a long time through smoke detectors and temperature sensors, and then opens the side door to take out the remaining materials, so as to avoid affecting the drying effect and causing fire in the equipment, thereby ensuring the safety of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the slow recovery device of the utility model;

[0028] Figure numerals: A, drying channel; 1-12, microwave box; 13, slow recovery device; 131, fan; 14-16, temperature sensor; 17, conveyor belt. DETAILED DESCRIPTION

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0031] like Figure 1 As shown, the utility model discloses a tunnel type microwave drying device, including a drying channel A, a conveyor belt 17 and a slow revival device 13; a microwave generator is arranged in the drying channel A; each microwave generator is provided with a different number of magnetrons according to the heating temperature, each microwave generator is provided with a microwave power controller, the conveyor belt 17 passes through the drying channel A and the slow revival device 13 in sequence; a smoke detector is arranged below the drying channel A; the slow revival device 13 is arranged behind the exit of the drying channel A. The number of magnetrons in each microwave generator decreases from the entrance to the exit of the drying channel A, and the magnetrons in each microwave generator are evenly distributed on the upper wall of the microwave generator, and a temperature sensor is arranged in the microwave generator, and the temperature sensor is arranged on the side wall of the microwave box.

[0032] As a technical optimization solution of the utility model: the drying channel A is composed of one to twelve microwave generators, and the number of microwave generators can be increased or decreased according to the output.

[0033] Moisture meters are provided at the inlet and outlet of the drying channel A. The moisture meter at the outlet can display the moisture content lost by the dried material and the moisture content of the dried material after drying. The moisture meter at the outlet can input the expected moisture content value, and adjust the microwave power according to the reduced moisture content and the moisture content after drying, so as to achieve accurate drying of the material and ensure the quality of the material.

[0034] like Figure 2 As shown, the conveyor belt 17 passes through the slow-release device 13, and the slow-release device 13 is provided with one or more combinations of a fan 131, a vacuum pump or a magnetron, and the fan 131, the vacuum pump or the magnetron is installed on the top of the slow-release device 13.

[0035] As a technical optimization solution of the present utility model: the slow-recovery device 13 is a vacuum cooling slow-recovery device.

[0036] In this embodiment, the fan 131 is replaced with a vacuum pump, and the wet steam and hot air are extracted by the vacuum pump, thereby reducing the moisture content and allowing the moisture in the center of the material to gradually diffuse to the surface to achieve a new balance.

[0037] As a technical optimization solution of the present utility model: the slow-release device 13 is a microwave slow-release device.

[0038] In this embodiment, the fan 131 is replaced with a magnetron, and slow recovery is performed at an appropriate magnetron frequency to reduce the impact of material surface cracking caused by uneven moisture distribution on quality, while being able to quickly passivate or kill bacteria and parasites inside the material.

[0039] As a technical optimization solution of the utility model: the slow recovery device can be set in different drying stages according to different material conditions, including setting a slow recovery device before drying, performing slow recovery during drying, and adding a slow recovery device in the cooling stage.

[0040] As a technical optimization solution of the utility model: each microwave cabinet is provided with a side door.

[0041] As a technical optimization solution of the utility model: the moisture measuring instrument at the outlet of the drying channel A is connected to a moisture abnormality alarm.

[0042] As a technical optimization solution of the utility model: the conveyor belt 17 is a continuously variable speed conveyor belt.

[0043] As a technical optimization solution of the utility model: a hoist is arranged at the front end of the conveyor belt.

[0044] The utility model also discloses a tunnel type microwave drying device for rubber tree seeds, which adopts the tunnel type microwave drying device described above.

[0045] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A tunnel type microwave drying equipment, characterized in that: The invention comprises a drying passage (A), a conveyor belt (17) and a slow-recovery device (13); a microwave generator is arranged in the drying passage (A); each microwave generator is provided with a different number of magnetrons according to the heating temperature, and each microwave generator is provided with a microwave power controller; the conveyor belt (17) passes through the drying passage (A) and the slow-recovery device (13) in sequence; a smoke detector is arranged below the drying passage (A); and the slow-recovery device (13) is arranged behind the outlet of the drying passage (A).

2. A tunnel type microwave drying equipment according to claim 1, characterized in that: The number of magnetrons in each microwave generator decreases from the entrance to the exit of the drying channel (A), and the magnetrons in each microwave generator are evenly distributed on the upper wall of the microwave generator. A temperature sensor is arranged in the microwave generator, and the temperature sensor is arranged on the side wall of the microwave box.

3. A tunnel type microwave drying equipment according to claim 1, characterized in that: A dehumidification device is arranged above the drying channel (A), and the dehumidification device is connected with each microwave generator through a dehumidification pipeline.

4. A tunnel type microwave drying equipment according to claim 2, characterized in that: The inlet and outlet of the drying channel (A) are respectively provided with moisture meters, and the inlet of the drying channel (A) is also provided with an inactivation device. The moisture meter at the outlet can display the moisture content lost by the dried material and the moisture content of the dried material after drying. The moisture meter at the outlet is connected to a moisture abnormality alarm.

5. The tunnel type microwave drying equipment according to claim 3, characterized in that: The moisture meter at the outlet of the drying tunnel (A) can input the desired moisture content value.

6. The tunnel type microwave drying equipment according to claim 1, characterized in that: The slow recovery device (13) is provided with a fan (131), a vacuum pump or a magnetron.

7. The tunnel type microwave drying equipment according to claim 2, characterized in that: Each microwave generator is provided with a side door.

8. The tunnel type microwave drying equipment according to claim 1, characterized in that: The conveyor belt (17) is a continuously variable speed conveyor belt.

9. The tunnel type microwave drying equipment according to claim 1, characterized in that: A hoist is arranged at the front end of the conveyor belt.

10. A tunnel type microwave drying device for rubber tree seeds, characterized in that: Use the tunnel type microwave drying equipment as described in claim 1.

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