CN205404419U - Food sulfur dioxide content detector - Google Patents
Food sulfur dioxide content detector Download PDFInfo
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- CN205404419U CN205404419U CN201620170293.2U CN201620170293U CN205404419U CN 205404419 U CN205404419 U CN 205404419U CN 201620170293 U CN201620170293 U CN 201620170293U CN 205404419 U CN205404419 U CN 205404419U
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- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 235000013305 food Nutrition 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 4
- AXDJCCTWPBKUKL-UHFFFAOYSA-N 4-[(4-aminophenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]aniline;hydron;chloride Chemical compound Cl.C1=CC(=N)C(C)=CC1=C(C=1C=CC(N)=CC=1)C1=CC=C(N)C=C1 AXDJCCTWPBKUKL-UHFFFAOYSA-N 0.000 claims 3
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 230000036461 convulsion Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 230000001012 protector Effects 0.000 description 2
- 102000004316 Oxidoreductases Human genes 0.000 description 1
- 108090000854 Oxidoreductases Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009895 reductive bleaching Methods 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
本实用新型属于食品检测设备技术领域且公开了一种食品二氧化硫含量检测仪，包括检测仪主体、支撑底座、加热底板、电源导线、插头、电阻丝、真空加热箱、食品导入仓、密封仓门、抽真空管、压力泵、单向出气塞、导气管、可抽动密封片、透明反应筒、刻度条、溶液滴管、流速控制阀、品红溶液盛放筒和加液口，所述检测仪主体下侧设置有支撑底座。本实用新型体积较小，便于移动，检测所用的反应试剂比较容易得到，无需专业的工作人员进行操作，大大降低了检测花费的成本，而且该装置检测所用的时间较短，结果较为准确，不会误导食品生产厂家做出错误的判断，该装置结构简单易操作，投入成本低，安全高效，易于推广。
The utility model belongs to the technical field of food testing equipment and discloses a food sulfur dioxide content detector, which comprises a main body of the detector, a support base, a heating bottom plate, a power supply wire, a plug, a resistance wire, a vacuum heating box, a food introduction bin, and a sealed bin door , vacuum tube, pressure pump, one-way air outlet plug, air guide tube, twitchable sealing sheet, transparent reaction cylinder, scale bar, solution dropper, flow rate control valve, magenta solution holding cylinder and liquid filling port, the detector The lower side of the main body is provided with a supporting base. The utility model has a small volume and is easy to move. The reaction reagents used in the detection are relatively easy to obtain, and no professional staff is required to operate, which greatly reduces the cost of detection. Moreover, the detection time of the device is relatively short, and the result is relatively accurate. It can mislead food manufacturers to make wrong judgments. The device is simple in structure and easy to operate, low in input cost, safe and efficient, and easy to popularize.
Description
技术领域 technical field
本实用新型涉及一种食品检测设备，具体涉及一种食品二氧化硫含量检测仪，属于食品检测设备技术领域。 The utility model relates to food testing equipment, in particular to a food sulfur dioxide content detector, which belongs to the technical field of food testing equipment.
背景技术 Background technique
二氧化硫是中国允许使用的还原性漂白剂，对食品有漂白作用，对植物性食品内的氧化酶有强烈的抑制作用，我国在食品中二氧化硫的使用量有着严格的控制，二氧化硫含量的超标不仅会影响食品正常的气味，还会给食用者的身体带来一定的危害。 Sulfur dioxide is a reductive bleaching agent allowed to be used in China. It has a bleaching effect on food and a strong inhibitory effect on oxidase in plant foods. my country has strict controls on the amount of sulfur dioxide used in food. Excessive sulfur dioxide content will not only cause Affect the normal smell of food, but also bring certain harm to the body of the eater.
因此需要对生产的食品在出售前进行二氧化硫含量的检测，传统的检测方法操作起来过于繁琐，需要食品生产厂家将生产的食品送往专业的检测机构进行检测，一次检测花费的成本较高，如果食品生产厂家自行操作进行检测的话检测的结果又会出现较大的偏差，影响食品生产厂家的正确判断，长此以往增大了食品二氧化硫含量检测的工作难度。 Therefore, it is necessary to test the sulfur dioxide content of the produced food before sale. The traditional detection method is too cumbersome to operate, and the food manufacturer needs to send the produced food to a professional testing agency for testing. The cost of a test is relatively high. If If the food manufacturer conducts the test by itself, there will be a large deviation in the test result, which will affect the correct judgment of the food manufacturer and increase the difficulty of the detection of sulfur dioxide content in food in the long run.
实用新型内容 Utility model content
本实用新型要解决的技术问题克服现有的缺陷，提供一种食品二氧化硫含量检测仪，可以有效解决背景技术中的问题。 The technical problem to be solved by the utility model overcomes the existing defects and provides a food sulfur dioxide content detector, which can effectively solve the problems in the background technology.
为了解决上述技术问题，本实用新型提供了如下的技术方案： In order to solve the above technical problems, the utility model provides the following technical solutions:
本实用新型提供一种食品二氧化硫含量检测仪，包括检测仪主体、支撑底座、加热底板、电源导线、插头、电阻丝、真空加热箱、食品导入仓、密封仓门、抽真空管、压力泵、单向出气塞、导气管、可抽动密封片、透明反应筒、刻度条、溶液滴管、流速控制阀、品红溶液盛放筒和加液口，所述检测仪主体下侧设置有支撑底座，所述检测仪主体内部设置有加热底板，加热底板左侧设置有电源导线，电源导线左侧设置有插头，且加热底板内部设置有电阻丝，所述加热底板上侧设置有真空加热箱，真空加热箱右侧设置有食品导入仓，食品导入仓右侧设置有密封仓门，所述真空加热箱左侧设置有抽真空管，抽真空管左侧设置有压力泵，且抽真空管内部设置有单向出气塞，所述真空加热箱上侧设置有导气管，导气管内部设置有可抽动密封片，且导气管上侧设置有透明反应筒，透明反应筒前侧设置有刻度条，所述透明反应筒上侧设置有溶液滴管，溶液滴管右侧设置有流速控制阀，所述溶液滴管上侧设置有品红溶液盛放筒，品红溶液盛放筒上侧设置有加液口。 The utility model provides a food sulfur dioxide content detector, which comprises a detector main body, a supporting base, a heating base, a power supply wire, a plug, a resistance wire, a vacuum heating box, a food introduction bin, a sealed bin door, a vacuum tube, a pressure pump, a single To the air outlet plug, air guide tube, twitchable sealing sheet, transparent reaction cylinder, scale bar, solution dropper, flow rate control valve, magenta solution holding cylinder and liquid filling port, the lower side of the main body of the detector is provided with a supporting base, The main body of the detector is provided with a heating base, the left side of the heating base is provided with a power lead, the left side of the power lead is provided with a plug, and the inside of the heating base is provided with a resistance wire, and the upper side of the heating base is provided with a vacuum heating box. The right side of the heating box is provided with a food introduction bin, the right side of the food introduction bin is provided with a sealed bin door, the left side of the vacuum heating box is provided with a vacuum tube, the left side of the vacuum tube is provided with a pressure pump, and the inside of the vacuum tube is provided with a one-way Air outlet plug, the upper side of the vacuum heating box is provided with an air guide tube, the inside of the air guide tube is provided with a twitchable sealing sheet, and the upper side of the air guide tube is provided with a transparent reaction tube, and the front side of the transparent reaction tube is provided with a scale bar. A solution dropper is arranged on the upper side of the cylinder, and a flow rate control valve is arranged on the right side of the solution dropper. A magenta solution holding cylinder is arranged on the upper side of the solution dropping pipe, and a liquid filling port is arranged on the upper side of the magenta solution holding cylinder.
作为本实用新型的一种优选技术方案，所述电源导线上设置有漏电保护器。 As a preferred technical solution of the present utility model, a leakage protector is arranged on the power supply wire.
作为本实用新型的一种优选技术方案，所述密封仓门上侧设置有把手。 As a preferred technical solution of the utility model, a handle is provided on the upper side of the sealed bin door.
作为本实用新型的一种优选技术方案，所述真空加热箱和导气管结合处设置有橡胶垫圈。 As a preferred technical solution of the utility model, a rubber gasket is provided at the junction of the vacuum heating box and the air duct.
作为本实用新型的一种优选技术方案，所述溶液滴管下侧壁设置有缓冲网。 As a preferred technical solution of the present invention, the lower side wall of the solution dropper is provided with a buffer net.
本实用新型所达到的有益效果是：一种食品二氧化硫含量检测仪，该装置体积较小，便于移动，检测所用的反应试剂比较容易得到，无需专业的工作人员进行操作，大大降低了检测花费的成本，而且该装置检测所用的时间较短，结果较为准确，不会误导食品生产厂家做出错误的判断，该装置结构简单易操作，投入成本低，安全高效，易于推广。 The beneficial effects achieved by the utility model are: a food sulfur dioxide content detector, the device is small in size, easy to move, and the reaction reagents used in the detection are relatively easy to obtain, without the need for professional staff to operate, greatly reducing the cost of detection cost, and the detection time of the device is relatively short, and the result is relatively accurate, which will not mislead food manufacturers to make wrong judgments. The device is simple in structure and easy to operate, low in input cost, safe and efficient, and easy to promote.
附图说明 Description of drawings
附图用来提供对本实用新型的进一步理解，并且构成说明书的一部分，与本实用新型的实施例一起用于解释本实用新型，并不构成对本实用新型的限制。 The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model.
在附图中： In the attached picture:
图1是本实用新型实施例所述的一种食品二氧化硫含量检测仪整体结构示意图； Fig. 1 is a schematic diagram of the overall structure of a food sulfur dioxide content detector described in an embodiment of the present invention;
图2是本实用新型实施例所述的一种食品二氧化硫含量检测仪的品红溶液盛放筒结构示意图； Fig. 2 is a schematic structural view of a magenta solution holding cylinder of a food sulfur dioxide content detector described in an embodiment of the present invention;
图中标号：1、检测仪主体；2、支撑底座；3、加热底板；4、电源导线；5、插头；6、电阻丝；7、真空加热箱；8、食品导入仓；9、密封仓门；10、抽真空管；11、压力泵；12、单向出气塞；13、导气管；14、可抽动密封片；15、透明反应筒；16、刻度条；17、溶液滴管；18、流速控制阀；19、品红溶液盛放筒；20、加液口。 Labels in the figure: 1. Main body of the detector; 2. Supporting base; 3. Heating base; 4. Power wire; 5. Plug; 6. Resistance wire; 7. Vacuum heating box; Door; 10, vacuum tube; 11, pressure pump; 12, one-way air outlet plug; 13, air guide tube; 14, twitchable sealing piece; 15, transparent reaction cylinder; 16, scale bar; 17, solution dropper; 18, Flow rate control valve; 19, magenta solution holding cylinder; 20, liquid filling port.
具体实施方式 detailed description
以下结合附图对本实用新型的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本实用新型，并不用于限定本实用新型。 The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.
实施例：请参阅图1-2，本实用新型一种食品二氧化硫含量检测仪，包括检测仪主体1、支撑底座2、加热底板3、电源导线4、插头5、电阻丝6、真空加热箱7、食品导入仓8、密封仓门9、抽真空管10、压力泵11、单向出气塞12、导气管13、可抽动密封片14、透明反应筒15、刻度条16、溶液滴管17、流速控制阀18、品红溶液盛放筒19和加液口20，所述检测仪主体1下侧设置有支撑底座2，所述检测仪主体1内部设置有加热底板3，加热底板3左侧设置有电源导线4，电源导线4左侧设置有插头5，且加热底板3内部设置有电阻丝6，所述加热底板3上侧设置有真空加热箱7，真空加热箱7右侧设置有食品导入仓8，食品导入仓8右侧设置有密封仓门9，所述真空加热箱7左侧设置有抽真空管10，抽真空管10左侧设置有压力泵11，且抽真空管10内部设置有单向出气塞12，所述真空加热箱7上侧设置有导气管13，导气管13内部设置有可抽动密封片14，且导气管13上侧设置有透明反应筒15，透明反应筒15前侧设置有刻度条16，所述透明反应筒15上侧设置有溶液滴管17，溶液滴管17右侧设置有流速控制阀18，所述溶液滴管17上侧设置有品红溶液盛放筒19，品红溶液盛放筒19上侧设置有加液口20。 Embodiment: Please refer to Fig. 1-2, the utility model is a food sulfur dioxide content detector, which includes a detector main body 1, a support base 2, a heating base 3, a power lead 4, a plug 5, a resistance wire 6, and a vacuum heating box 7 , food introduction bin 8, sealed bin door 9, vacuum tube 10, pressure pump 11, one-way air outlet plug 12, air guide tube 13, twitchable sealing sheet 14, transparent reaction cylinder 15, scale bar 16, solution dropper 17, flow rate Control valve 18, magenta solution holding cylinder 19 and liquid filling port 20, a support base 2 is provided on the lower side of the main body 1 of the detector, a heating base 3 is arranged inside the main body 1 of the detector, and the left side of the heating base 3 is arranged There is a power wire 4, a plug 5 is arranged on the left side of the power wire 4, and a resistance wire 6 is arranged inside the heating bottom plate 3, a vacuum heating box 7 is arranged on the upper side of the heating bottom plate 3, and a food inlet is arranged on the right side of the vacuum heating box 7. Bin 8, the right side of the food import bin 8 is provided with a sealed bin door 9, the left side of the vacuum heating box 7 is provided with a vacuum tube 10, the left side of the vacuum tube 10 is provided with a pressure pump 11, and the inside of the vacuum tube 10 is provided with a one-way Air outlet plug 12, the upper side of the vacuum heating box 7 is provided with an air guide tube 13, the inside of the air guide tube 13 is provided with a twitchable sealing sheet 14, and the upper side of the air guide tube 13 is provided with a transparent reaction cylinder 15, and the front side of the transparent reaction cylinder 15 is provided There is a scale bar 16, the upper side of the transparent reaction cylinder 15 is provided with a solution dropper 17, the right side of the solution dropper 17 is provided with a flow rate control valve 18, and the upper side of the solution dropper 17 is provided with a magenta solution holding cylinder 19 , The upper side of the magenta solution holding cylinder 19 is provided with a liquid filling port 20 .
所述电源导线4上设置有漏电保护器，可以在装置发生漏电对装置和操作人员进行保护；所述密封仓门9上侧设置有把手，可以便于密封仓门9的开合；所述真空加热箱7和导气管13结合处设置有橡胶垫圈，可以对真空加热箱7和导气管13结合处进行更好的密封，保证其气密性良好；所述溶液滴管17下侧壁设置有缓冲网，可以对滴入的品红溶液进行缓冲，防止滴入的品红溶液飞溅。 The power wire 4 is provided with a leakage protector, which can protect the device and the operator when the device leaks; the upper side of the sealed door 9 is provided with a handle, which can facilitate the opening and closing of the sealed door 9; the vacuum The junction of heating box 7 and air guide pipe 13 is provided with a rubber gasket, which can better seal the junction of vacuum heating box 7 and air guide pipe 13 to ensure its good airtightness; the lower side wall of the solution dropper 17 is provided with The buffer net can buffer the dripping magenta solution to prevent splashing of the dripping magenta solution.
需要说明的是，本实用新型为一种食品二氧化硫含量检测仪，在使用该装置时先从需要检测的食品中随机取出少许的食品样品，打开密封仓门9将样品从食品导入仓8加入到真空加热箱7内，然后插上插头5将装置接入电源，通过压力泵11将真空加热箱7内的空气抽走使真空加热箱7内达到真空环境，通过加热底板3对真空加热箱7内的样品进行加热，加热的样品会挥发出大量的气体，气体通过导气管13导入到透明反应筒15内，然后操作可抽动密封片14对透明反应筒15进行密封，缓慢的打开流速控制阀18将品红溶液盛放筒19内的品红溶液放入到透明反应筒15内，待到放入的品红溶液不再褪色后关闭流速控制阀18，通过观察刻度条16来得到加入品红溶液的量，通过计算得到二氧化硫的含量，通过二氧化硫的含量来判断食品中的二氧化硫是否超标即可。 It should be noted that the utility model is a food sulfur dioxide content detector. When using the device, a small amount of food samples are randomly taken out from the food to be tested, and the sealed chamber door 9 is opened to add the samples from the food introduction chamber 8 to the In the vacuum heating box 7, then plug in the plug 5 to connect the device to the power supply, and the air in the vacuum heating box 7 is sucked away by the pressure pump 11 to make the vacuum heating box 7 reach a vacuum environment, and the vacuum heating box 7 is heated by the heating base plate 3 The sample inside is heated, and the heated sample will volatilize a large amount of gas. The gas is introduced into the transparent reaction cylinder 15 through the gas guide tube 13, and then the twitchable sealing sheet 14 is operated to seal the transparent reaction cylinder 15, and the flow rate control valve is slowly opened. 18 Put the magenta solution in the magenta solution holding cylinder 19 into the transparent reaction cylinder 15, close the flow control valve 18 after the put magenta solution no longer fades, and obtain the added product by observing the scale bar 16. The amount of red solution can be obtained by calculating the content of sulfur dioxide, which can be used to judge whether the sulfur dioxide in the food exceeds the standard.
最后应说明的是：以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，尽管参照前述实施例对本实用新型进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。 Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims (5)
- null1. a food sulfur dioxide detector，Including detector main body (1)、Support base (2)、Heating base plate (3)、Power lead (4)、Plug (5)、Resistance wire (6)、Heating in vacuum case (7)、Food imports storehouse (8)、Seal door (9)、Vacuum-pumping tube (10)、Compression pump (11)、Unidirectional go out vent plug (12)、Airway (13)、Diaphragm seal (14) can be twitched、Transparent reaction cylinder (15)、Scale strip (16)、Solution dripping nozzle (17)、Flow control valve (18)、Fuchsin solution holds cylinder (19) and filling opening (20)，It is characterized in that: described detector main body (1) downside is provided with support base (2)，Described detector main body (1) is internally provided with heating base plate (3)，Heating base plate (3) left side is provided with power lead (4)，Power lead (4) left side is provided with plug (5)，And heating base plate (3) is internally provided with resistance wire (6)，Described heating base plate (3) upside is provided with heating in vacuum case (7)，Heating in vacuum case (7) right side is provided with food and imports storehouse (8)，Food imports right side, storehouse (8) and is provided with sealing door (9)，Described heating in vacuum case (7) left side is provided with vacuum-pumping tube (10)，Vacuum-pumping tube (10) left side is provided with compression pump (11)，And vacuum-pumping tube (10) be internally provided with unidirectional go out vent plug (12)，Described heating in vacuum case (7) upside is provided with airway (13)，Airway (13) is internally provided with can twitch diaphragm seal (14)，And airway (13) upside is provided with transparent reaction cylinder (15)，Transparent reaction cylinder (15) front side is provided with scale strip (16)，Described transparent reaction cylinder (15) upside is provided with solution dripping nozzle (17)，Solution dripping nozzle (17) right side is provided with flow control valve (18)，Described solution dripping nozzle (17) upside is provided with fuchsin solution and holds cylinder (19)，Fuchsin solution holds cylinder (19) upside and is provided with filling opening (20).
- 2. a kind of food sulfur dioxide detector according to claim 1, it is characterised in that described power lead is provided with earth leakage protective device on (4).
- 3. a kind of food sulfur dioxide detector according to claim 1, it is characterised in that described sealing door (9) upside is provided with handle.
- 4. a kind of food sulfur dioxide detector according to claim 1, it is characterised in that described heating in vacuum case (7) and airway (13) junction are provided with rubber washer.
- 5. a kind of food sulfur dioxide detector according to claim 1, it is characterised in that described solution dripping nozzle (17) lower wall is provided with buffer subsystem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170293.2U CN205404419U (en) | 2016-03-07 | 2016-03-07 | Food sulfur dioxide content detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170293.2U CN205404419U (en) | 2016-03-07 | 2016-03-07 | Food sulfur dioxide content detector |
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| Publication Number | Publication Date |
|---|---|
| CN205404419U true CN205404419U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620170293.2U Expired - Fee Related CN205404419U (en) | 2016-03-07 | 2016-03-07 | Food sulfur dioxide content detector |
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| Country | Link |
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| CN (1) | CN205404419U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030713A (en) * | 2018-08-13 | 2018-12-18 | 苏州安纳赛分析仪器有限公司 | A kind of integrated form content of sulfur dioxide determining instrument |
| CN109765340A (en) * | 2019-01-24 | 2019-05-17 | 北京农业质量标准与检测技术研究中心 | Device and method for detecting residual sulfur dioxide in edible fungi |
| CN115804981A (en) * | 2022-12-08 | 2023-03-17 | 大峘集团有限公司 | Environmental protection equipment for flue gas desulfurization wastewater treatment |
-
2016
- 2016-03-07 CN CN201620170293.2U patent/CN205404419U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030713A (en) * | 2018-08-13 | 2018-12-18 | 苏州安纳赛分析仪器有限公司 | A kind of integrated form content of sulfur dioxide determining instrument |
| CN109765340A (en) * | 2019-01-24 | 2019-05-17 | 北京农业质量标准与检测技术研究中心 | Device and method for detecting residual sulfur dioxide in edible fungi |
| CN115804981A (en) * | 2022-12-08 | 2023-03-17 | 大峘集团有限公司 | Environmental protection equipment for flue gas desulfurization wastewater treatment |
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