CN103884155A - Multi-cavity continuous-microwave vacuum spray drying device - Google Patents
Multi-cavity continuous-microwave vacuum spray drying device Download PDFInfo
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- CN103884155A CN103884155A CN201410129530.6A CN201410129530A CN103884155A CN 103884155 A CN103884155 A CN 103884155A CN 201410129530 A CN201410129530 A CN 201410129530A CN 103884155 A CN103884155 A CN 103884155A
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Abstract
A multi-cavity continuous-microwave vacuum spray drying device is convenient to use and efficient, saves energy and improves dried product quality, and can be widely applied to the fields like food, chemical industry, medicine and environment protection. The drying device mainly comprises a main distributor (1a), a sub distributor (1b), a microwave generator (3), a pressure control system, a feeding inlet (11), a discharging outlet (12), distribution pipes (13) and a plurality of drying cavities (2). A plurality of vacuum drying pipes (10) are arranged in the drying cavities (2), and the pressure control system comprises a valve (4), a distribution box (5), a pressure sensor (6), a dust remover (7), a cold trap (8) and a vacuum pump (9). Through the design of multiple cavities, within the same pressure fluctuation range, the spray wind speed is adjustable, different materials can be dried at the same time continuously and conveniently, output is large, and compared with other drying modes, the heating time is shorter, the drying rate is improved, the materials are more evenly heated, and product quality is improved.
Description
Technical field
The present invention relates to the dry materials of food, chemical industry, medicine and other fields, be specifically related to one under vacuum state, utilize the spouted drying equipment of Multicarity of microwave continuous heating.
Background technology
In recent years, there is the advantages such as drying efficiency is high, heat utilization efficiency is high, superior product quality due to vacuum microwave drying technology, more and more studied and apply in food, chemical industry, medicine and other fields.Microwave heating system and vacuum system are organically combined, make that firing rate is fast, dry or concentration time is short, baking temperature is low, be specially adapted to thermal sensitivity, oxidizable, sugary part of high material, as various food, medicine, chemical products etc.But existing vacuum microwave drying device exists that production process is discontinuous, output is few, inconvenient, can not be dried the shortcomings such as different material simultaneously.
Nanjing Chang Xin drying equipment Co., Ltd discloses a kind of micro-wave vacuum equipment (publication number: CN202274720U), and its structure comprises casing, heating in vacuum chamber and is arranged on microwave power supply system, microwave energy-feeding system, vacuum system and the control system in casing.This equipment comprises multiple microwave generators, be symmetricly set on the outer fix at top and four diagonal angles in heating in vacuum chamber, and be connected with cooling blower, power supply box is connected with exhaust fan, roof box is provided with Non-contact Infrared Temperature Measurement probe, temperature when detectable heating material.Heating in vacuum cavity wall is provided with the airtight flange being connected with the microwave feedback mouth of microwave generator, and bottom, heating in vacuum chamber is provided with pump mouth, and vacuum system comprises the bleeding point and the gas vent that are arranged on heating chamber side, for regulating the vacuum in heating in vacuum chamber.The shortcomings such as that this equipment exists is as discontinuous in charging, can not be dried different material simultaneously, time-consumingly grow, wind speed is non-adjustable.
The Cui Zhengwei of Southern Yangtze University discloses a kind of micro-wave vacuum equipment (publication number: CN101082464A).This invention relates to a kind of microwave and the integrated drying and dehydrating device of vacuum system, comprise a hothouse for the air-tight state of placing materials, the wall body of hothouse is provided with the switching door body of being convenient to pick and place material, the wall body of switching door body and hothouse is for being tightly connected, on the wall body of hothouse, be provided with microwave generating apparatus, the microwave that microwave generating apparatus produces can carry out heating using microwave to the material in hothouse through the wall body of hothouse, be provided with at the wall body of hothouse the vacuum stretching in hothouse and take over, vacuum is taken over and is connected with vacuum extractor.On the wall body of two relative hothouses, have a pair of mirror device, on switching door body, turn on electric light for one, can monitor dry indoor conditions.On mirror device, be provided with micro-wave screening wire netting.Drive motors is set below hothouse, and the turning cylinder of this drive motors stretches in hothouse, and is provided with the rotating disk for placing materials on the top of turning cylinder, is provided with outside framework oil seal device in the joint portion of turning cylinder and hothouse.Between the bottom surface of rotating disk and the bottom surface of hothouse, be provided with roller.Microwave generating apparatus comprises polypropylene board, waveguide and the magnetron thereof on the wall body that is arranged at hothouse.Take in vacuum one end of stretching in hothouse and be provided with vacuum-breaking valve, the vacuum adapter being positioned at outside hothouse is provided with vacuum line valve.The shortcoming of this device is: output is few, production efficiency is low, can not continuous operation and can not be dried different material etc. simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of Multicarity spray-moving type drying equipment that utilizes microwave continuous heating under vacuum state, have spouted wind speed adjustable, can be dried different material, continuous convenient, the feature such as output is large simultaneously, compared with other drying modes, the heat time is shorter, rate of drying improves, material is heated more evenly, product quality improves.
For achieving the above object, technical scheme of the present invention is as follows:
The spouted drying equipment of a kind of Multicarity continuous microwave vacuum, described equipment comprises: master shunter 1a, the current divider 1b of branch, microwave generator 3, control pressurer system, charging aperture 11, discharging opening 12, isocon 13 and multiple drying chamber 2, in drying chamber 2, comprise multiple vacuum drying pipes 10, described control pressurer system comprises valve 4, distribution box 5, pressure sensor 6, deduster 7, cold-trap 8, vavuum pump 9, wherein:
The upper and lower current divider 1b of branch that all arranges of each drying chamber 2, each current divider 1b of branch is formed and is flexible coupling with drying chamber 2 by many isocons 13 respectively, and extends the multiple vacuum drying pipes 10 that are connected to drying chamber 2 inside;
Upper and lower two master shunter 1a in the middle of multiple drying chambers 2 are connected into respectively by the upper and lower Liang Ge current divider 1b of branch, are provided with valve 4 between master shunter 1a and the current divider 1b of branch;
Between the isocon 13 on top and vacuum drying pipe 10, be provided with charging aperture 11, between the isocon 13 of bottom and vacuum drying pipe 10, be provided with discharging opening 12;
The master shunter 1a of bottom is provided with air inlet, and the master shunter 1a on top is provided with gas outlet;
Distribution box 5 is electrically connected with microwave generator 3, valve 4, pressure sensor 6, cold-trap 8, vavuum pump 9 respectively.
Each drying chamber 2 arranged outside microwave generators 3, the waveguide that the microwave of microwave generator 3 is equipped with by himself imports drying chamber 2.
In the air inlet that the master shunter 1a of bottom is provided with, there is microwave device for preventing leakage, the gas outlet that the master shunter 1a on top is provided with is Bonding pressure sensor 6, deduster 7, cold-trap 8 and vavuum pump 9 successively, vacuum pump outlet place has water seal arrangement to prevent microwave leakage, wherein, gas outlet is consistent with the switch of vavuum pump 9; The switch of the corresponding valve 4 of PLC procedure auto-control air inlet in distribution box 5, to regulate the pressure of drying chamber 2 inside.
Control pressurer system is set maximum pressure and minimum pressure fluctuation range by distribution box 5, thereby by the switch of valve 4 corresponding to the air inlet of the automatic control master shunter of distribution box 5 1a, in the time that the pressure in drying chamber 2 is less than setting minimum pressure, the valve 4 that air inlet is corresponding is opened, and blows material suspended in drying chamber 2; In the time that the pressure in drying chamber 2 is greater than setting maximum pressure, the valve 4 that air inlet is corresponding is closed.
Connected mode between charging aperture 11, discharging opening 12 and isocon 13 is clamp connection, between vacuum drying pipe 10 and charging aperture 11 and discharging opening 12, is connected with flange, between charging aperture 11, discharging opening 12 and isocon 13, screen pack is housed.
Under uniform pressure, automatically set or manually set the number of the switching of valve 4 and the start and stop of microwave generator 3 of controlling drying chamber 2 correspondences by the PLC program in distribution box 5.
Automatically set or manually set by the PLC program in distribution box 5, the start and stop of each self-corresponding valve 4 switchings of the each drying chamber 2 of rotation switch and microwave generator 3.
Control by distribution box 5 that the each self-corresponding valve 4 of each drying chamber 2 opens and closes and the start and stop of microwave generator 3.
Beneficial effect of the present invention is:
1. convenient continuously: be provided with multiple airtight vacuum drying chambers, can continuous feed, and charging and discharging open height low (being respectively 1.6 meters and 1.0 meters), charging discharging is convenient, meets base of principle of human engineering.
2. homogeneous heating: the spouted vacuum drying method of microwave changes by periodic vacuum pressure, drive material particles periodically spouted, thereby improve the uniformity of dry materials, that while having avoided product to maintain static, has caused because local temperature is too high burns phenomenon, thereby improve the quality of dry rear product, also correspondingly improve rate of drying, and reduce available energy dissipation simultaneously.
3. efficient energy-saving: microwave heating system and pumped vacuum systems organically combine, gets rid of the moisture of dry materials evaporation in time, has reduced the saturated vapor pressure in vacuum drying chamber, has improved mass transfer power; Spouted air-flow has improved convection transfer rate, has greatly improved heat and mass efficiency, thereby improves the utilization rate of the energy.
4. output is many: owing to adopting Multicarity design, feeding quantity can be several times of single cavity, can adopt laser heating to be simultaneously dried, and output increases, thereby more saves time.
5. under uniform pressure, adjustable wind speed, be convenient to the optimization of dried material quality etc.: regulate air-flow velocity by closing different vacuum cavities, compared with single cavity heating means, can adapt to more neatly the dry of different densities and different big or small material, effectively prevent that material is excessive and be difficult for the spouted or too small phenomenons such as vacuum tube top that excessively spout to of material, make material evenly spouted in microwave field, thereby more evenly utilize microwave energy, greatly improved drying efficiency and product quality.
6. can be dried different material: each cavity can add different dried materials, carries out heat drying simultaneously simultaneously.This equipment has multiple vacuum drying pipes, can load dry multiple different material simultaneously, can carry out research or the production of the spouted drying effect of microwave vacuum of various materials simultaneously, facilitates the accurate control of same process, has improved utilization rate of equipment and installations.
Accompanying drawing explanation
Fig. 1 is the structural representation (situation that only signal comprises two drying chambers 2, can be according to actual needs, connects multiple cavitys) of the spouted drying equipment of Multicarity continuous microwave vacuum of the present invention.
Fig. 2 is the top view (situation that only signal comprises four drying chambers 2, can be according to actual needs, connects multiple cavitys) of the spouted drying equipment of Multicarity continuous microwave vacuum of the present invention.
Reference numeral
1a master shunter 1b branch current divider
2 drying chamber 3 microwave generators
4 valve 5 distribution boxs
6 pressure sensor 7 dedusters
8 cold-trap 9 vavuum pumps
10 vacuum drying pipe 11 charging apertures
12 discharging opening 13 isocons
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the spouted drying equipment of Multicarity continuous microwave vacuum of the present invention, comprises master shunter 1a, the current divider 1b of branch, microwave generator 3, control pressurer system, charging aperture 11, discharging opening 12, isocon 13, and multiple drying chamber 2, in drying chamber 2, comprise multiple vacuum drying pipes 10, wherein, control pressurer system comprises valve 4, distribution box 5, pressure sensor 6, deduster 7, cold-trap 8, vavuum pump 9.
Distribution box 5 is electrically connected with microwave generator 3, valve 4, pressure sensor 6, cold-trap 8, vavuum pump 9 respectively.
The upper and lower current divider 1b of branch that all arranges of each drying chamber 2, each current divider 1b of branch is formed and is flexible coupling with drying chamber 2 by many isocons 13 respectively, and extends the multiple vacuum drying pipes 10 that are connected to drying chamber 2 inside; Upper and lower two master shunter 1a in the middle of multiple drying chambers 2 are connected into respectively by the upper and lower Liang Ge current divider 1b of branch, between master shunter 1a and the current divider 1b of branch, be provided with valve 4, control the switching of respective valves 4 and the start and stop of microwave generator 3 are carried out independent control to each drying chamber 2 by distribution box 5, realize the object of dry different material simultaneously; Under uniform pressure, automatically set or manually set the number of the switching of valve 4 and the start and stop of microwave generator 3 of controlling drying chamber 2 correspondences by the PLC program in distribution box 5, can realize the adjusting of spouted wind speed.Between the isocon 13 on top and vacuum drying pipe 10, be provided with charging aperture 11, between the isocon 13 of bottom and vacuum drying pipe 10, be provided with discharging opening 12, wherein, connected mode between charging aperture 11, discharging opening 12 and isocon 13 is clamp connection, between vacuum drying pipe 10 and charging aperture 11 and discharging opening 12, is connected with flange.Between charging aperture 11, discharging opening 12 and isocon 13, screen pack is housed, can shields because of spouted and enter the material of top isocon 13 or prevent from falling in work the material in bottom isocon 13.
Automatically set or manually set by the PLC program in distribution box 5, the each self-corresponding valve 4 of the each drying chamber 2 of rotation switch opens and closes and microwave generator 3 start and stop, thereby realizes the continuous microwave drying of integral device.
The master shunter 1a of bottom is provided with air inlet, has microwave device for preventing leakage in air inlet; The master shunter 1a on top is provided with gas outlet, and gas outlet is Bonding pressure sensor 6, deduster 7, cold-trap 8 and vavuum pump 9 successively, and the exit of vavuum pump 9 is provided with water seal arrangement and prevents microwave leakage, wherein, gas outlet is consistent with the switch of vavuum pump 9, and vavuum pump 9 is opened, and open gas outlet; Vavuum pump 9 cuts out, and gas outlet is closed naturally.The switch of the corresponding valve 4 of PLC procedure auto-control air inlet in distribution box 5, to regulate the pressure of drying chamber 2 inside.Pressure sensor 6 is for pressure measuring and regulating; Deduster 7, for removing impurity, guarantees equipment normal operation; The object of cold-trap 8 is that hot-air is cooling, in order to avoid cavitation occurs vavuum pump 9.
Control pressurer system can be set maximum pressure and the minimum pressure fluctuation range in drying chamber 2 by distribution box 5, thereby automatically controls the switch of the valve 4 that master shunter 1a air inlet is corresponding by distribution box 5.Set when minimum pressure when the pressure in drying chamber 2 is less than, the valve 4 that air inlet is corresponding is opened, blow material suspended in the vacuum drying pipe 10 of drying chamber 2, thereby realized the spouted function of material, accelerate rate of drying, homogeneous heating, efficient energy-saving; In the time that the pressure in drying chamber 2 is greater than setting maximum pressure, the valve 4 that air inlet is corresponding is closed.
The concrete operation step of the spouted drying equipment of Multicarity continuous microwave vacuum of the present invention is as follows:
A) the pressure bound by distribution box 5 setting pressure control systems, each drying chamber 2 corresponding different dry power and drying times, and PLC drying program (comprise and start valve 4 and the microwave generator 3 of multiple drying chambers 2 whether simultaneously or only start the corresponding valve 4 of single drying chamber 2 and microwave generator 3); By the control panel pushbutton enable pressure sensor 6 of distribution box 5, cold-trap 8, vavuum pump 9.
B) open the charging aperture 11 that needs the vacuum drying of charging pipe 10, after charging, close charging aperture 11; Start the microwave generator 3 of the residing drying chamber 2 of this vacuum drying pipe 10 simultaneously by distribution box 5, now open the upper lower valve 4 of drying chamber 2, by upper lower shunt tube 13, this drying chamber 2 is communicated with control pressurer system, enters dry materials process.Control pressurer system is controlled the switching of the valve 4 that air inlet is corresponding automatically by distribution box 5 according to the pressure bound of setting, in the time that the pressure in drying chamber 2 is less than setting minimum pressure, the valve 4 that air inlet is corresponding is opened; In the time that the pressure in drying chamber 2 is greater than setting maximum pressure, the valve 4 that air inlet is corresponding is closed, and controls thereby reach the object that enters drying tube 2 air-flows.
C) when reaching drying time setting value, manually or automatically close the microwave generator 3 of these drying chamber 2 correspondences and the upper lower valve 4 of this drying chamber 2 correspondences by distribution box 5 control systems.
D) open the discharging opening 12 of vacuum drying pipe 10 correspondences of closing microwave and upper lower valve 4, dryed product is discharging from vacuum drying pipe 10 automatically under Action of Gravity Field; After discharging, close discharging opening 12.
E) if desired carry out moving material and be dried, repeating step b-d.If dry materials work is complete, can cut off all power supplys, shutdown system.
Embodiment 1
The adjusting of the spouted wind speed of present device is achieved in the following ways: in dry run, if only open the valve 4 of 1 drying chamber 2 correspondence, spouted wind speed is full blast speed; If open the valve 4 of 2 drying chamber 2 correspondences, the interior wind speed of each drying chamber 2 is 1/2 of full blast speed; By that analogy.The number of controlling the unlatching of the valve 4 of drying chamber 2 correspondences, can realize the adjusting of spouted wind speed.In theory, the number of drying chamber 2 can be infinitely individual, can determine according to actual requirement the number of drying chamber 2.
In dry run, in the time that a drying chamber 2 is being dried, can opens other any one drying chambers 2 and feed in raw material and discharging, the reinforced discharging successively of drying chamber 2 orders, can realize the continuous drying operation of integral device.
Claims (8)
1. the spouted drying equipment of Multicarity continuous microwave vacuum, is characterized in that:
Described equipment comprises: master shunter (1a), branch's current divider (1b), microwave generator (3), control pressurer system, charging aperture (11), discharging opening (12), isocon (13) and multiple drying chamber (2), in drying chamber (2), comprise multiple vacuum drying pipes (10), described control pressurer system comprises valve (4), distribution box (5), pressure sensor (6), deduster (7), cold-trap (8), vavuum pump (9), wherein:
The upper and lower branch's current divider (1b) that all arranges of each drying chamber (2), each branch current divider (1b) is formed and is flexible coupling with drying chamber (2) by many isocons (13) respectively, and extends the multiple vacuum drying pipes (10) that are connected to drying chamber (2) inside;
Upper and lower two master shunters (1a) in the middle of multiple drying chambers (2) are connected into respectively by upper and lower Liang Ge branch's current divider (1b), are provided with valve (4) between master shunter (1a) and branch's current divider (1b);
Between the isocon (13) on top and vacuum drying pipe (10), be provided with charging aperture (11), between the isocon (13) of bottom and vacuum drying pipe (10), be provided with discharging opening (12);
The master shunter (1a) of bottom is provided with air inlet, and the master shunter (1a) on top is provided with gas outlet;
Distribution box (5) is electrically connected with microwave generator (3), valve (4), pressure sensor (6), cold-trap (8), vavuum pump (9) respectively.
2. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
Each drying chamber (2) arranged outside microwave generator (3), the waveguide that the microwave of microwave generator (3) is equipped with by himself imports drying chamber (2).
3. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
In the air inlet that the master shunter (1a) of bottom is provided with, there is microwave device for preventing leakage, the gas outlet that the master shunter (1a) on top is provided with is Bonding pressure sensor (6), deduster (7), cold-trap (8) and vavuum pump (9) successively, vacuum pump outlet place has water seal arrangement to prevent microwave leakage, wherein, gas outlet is consistent with the switch of vavuum pump (9); The switch of the corresponding valve of PLC procedure auto-control air inlet (4) in distribution box (5), to regulate the inner pressure of drying chamber (2).
4. according to the spouted drying equipment of Multicarity continuous microwave vacuum described in claim 1 or 3, it is characterized in that:
Control pressurer system is set maximum pressure and minimum pressure fluctuation range by distribution box (5), thereby automatically control the switch of the valve (4) that the air inlet of master shunter (1a) is corresponding by distribution box (5), in the time that the pressure in drying chamber (2) is less than setting minimum pressure, the valve (4) that air inlet is corresponding is opened, and blows material suspended in drying chamber (2); In the time that the pressure in drying chamber (2) is greater than setting maximum pressure, the valve (4) that air inlet is corresponding is closed.
5. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
Connected mode between charging aperture (11), discharging opening (12) and isocon (13) is clamp connection, between vacuum drying pipe (10) and charging aperture (11) and discharging opening (12), be connected with flange, between charging aperture (11), discharging opening (12) and isocon (13), screen pack be housed.
6. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
Under uniform pressure, control the switching of valve (4) of drying chamber (2) correspondence and the number of the start and stop of microwave generator (3) by the automatic setting of the PLC program in distribution box (5) or manual setting.
7. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
Automatically set or manually set by the PLC program in distribution box (5), the start and stop of the each self-corresponding valve of the each drying chamber of rotation switch (2) (4) switching and microwave generator (3).
8. the spouted drying equipment of Multicarity continuous microwave vacuum according to claim 1, is characterized in that:
Control the start and stop of the each self-corresponding valve of each drying chamber (2) (4) switching and microwave generator (3) by distribution box (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410129530.6A CN103884155B (en) | 2014-04-02 | 2014-04-02 | The spouted drying equipment of Multicarity continuous microwave vacuum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410129530.6A CN103884155B (en) | 2014-04-02 | 2014-04-02 | The spouted drying equipment of Multicarity continuous microwave vacuum |
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| CN103884155B CN103884155B (en) | 2016-02-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597638A (en) * | 2016-03-09 | 2016-05-25 | 中国工程物理研究院激光聚变研究中心 | Microsphere drying device |
| CN108007093A (en) * | 2017-12-06 | 2018-05-08 | 重庆市万盛区普惠城市建设咨询服务有限公司 | Easy to the Chinese prickly ash barn of rewinding |
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| US20100218395A1 (en) * | 2007-10-15 | 2010-09-02 | Enwave Corporation | Apparatus and method for microwave vacuum-drying of organic materials |
| CN202274720U (en) * | 2011-09-30 | 2012-06-13 | 南京长鑫干燥设备有限公司 | Microwave vacuum drying equipment |
| CN102987524A (en) * | 2012-12-06 | 2013-03-27 | 江南大学 | Pulse spouted microwave freeze-drying device for granular conditioning food and homogenization efficient processing method |
| CN103238887A (en) * | 2013-05-21 | 2013-08-14 | 广东嘉豪食品股份有限公司 | Method for making instant chicken sauce slices through microwave spouted freeze-drying |
| CN103453743A (en) * | 2012-05-29 | 2013-12-18 | 党庆风 | Efficient energy-saving vacuum microwave continuous drying device |
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2014
- 2014-04-02 CN CN201410129530.6A patent/CN103884155B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100218395A1 (en) * | 2007-10-15 | 2010-09-02 | Enwave Corporation | Apparatus and method for microwave vacuum-drying of organic materials |
| CN202274720U (en) * | 2011-09-30 | 2012-06-13 | 南京长鑫干燥设备有限公司 | Microwave vacuum drying equipment |
| CN103453743A (en) * | 2012-05-29 | 2013-12-18 | 党庆风 | Efficient energy-saving vacuum microwave continuous drying device |
| CN102987524A (en) * | 2012-12-06 | 2013-03-27 | 江南大学 | Pulse spouted microwave freeze-drying device for granular conditioning food and homogenization efficient processing method |
| CN103238887A (en) * | 2013-05-21 | 2013-08-14 | 广东嘉豪食品股份有限公司 | Method for making instant chicken sauce slices through microwave spouted freeze-drying |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597638A (en) * | 2016-03-09 | 2016-05-25 | 中国工程物理研究院激光聚变研究中心 | Microsphere drying device |
| CN105597638B (en) * | 2016-03-09 | 2017-10-31 | 中国工程物理研究院激光聚变研究中心 | A kind of microballoon drying device |
| CN108007093A (en) * | 2017-12-06 | 2018-05-08 | 重庆市万盛区普惠城市建设咨询服务有限公司 | Easy to the Chinese prickly ash barn of rewinding |
| CN108007093B (en) * | 2017-12-06 | 2024-01-05 | 重庆翼耀科技咨询有限公司 | Zanthoxylum bungeanum curing barn convenient for receiving materials |
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