噴溢的粉末涂料，可以回收利用，是粉末涂料的重要優(yōu)勢。回收是通過回收設(shè)備來完成的。粉末涂料回收設(shè)備的種類很多，有旋風分離式、袋 式、彈筒式（濾芯式）、傳送帶式、薄膜式等。在實際涂裝體系中，采用單一設(shè)備的很少，多數(shù)采用兩種或兩種以上設(shè)備組合在一起的復合型設(shè)備。這是因為每種設(shè)備既有各自的優(yōu)點，又有一定的缺點，只用一種設(shè)備往往不能得到滿意的結(jié)果，只有使用復合型設(shè)備，才能達到互為補償?shù)睦硐虢Y(jié)合。在自動化流水線上，用得最多的還是旋風分離器和袋濾器相結(jié)合的回收系統(tǒng)。旋風分離器主要回收大部分噴溢的粉末涂料，袋濾器則回收過細的粉末涂料。

　　The sprayed powder coating can be recycled, which is an important advantage of powder coating. Recycling is accomplished through recycling equipment. There are many types of powder coating recycling equipment, including cyclone separation, bag type, cartridge type (filter type), conveyor belt type, film type, etc. In actual painting systems, few use a single device, and most use composite equipment that combines two or more devices together. This is because each device has its own advantages and disadvantages, and using only one device often cannot achieve satisfactory results. Only by using composite devices can we achieve the ideal combination of mutual compensation. The most commonly used recycling system on automated assembly lines is still the combination of cyclone separators and bag filters. The cyclone separator mainly recovers most of the spilled powder coating, while the bag filter recovers ultra-fine powder coating.

　　鋼桶靜電粉末涂裝和回收生產(chǎn)線

　　Steel drum electrostatic powder coating and recycling production line

　　一、旋風分離式回收設(shè)備

　　1、 Cyclone separation recycling equipment

　　旋風分離式回收設(shè)備是由旋風分離器、鼓風機、振動篩等組成。它像旋風除塵器一樣，是利用龍卷風的原理制成的，當高速氣流通過倒錐形分離器上部圓筒部分時，氣流就在圓筒內(nèi)部高速旋轉(zhuǎn)，同時在倒錐形內(nèi)部產(chǎn)生離心力，這種離心力就把較重的粉末涂料顆粒分離出來。當被回收的粉末涂料隨著氣流被帶進分離器時，由于離心力的作用，粗粒子粉末涂料就沉積在錐形筒的底部，得到回收；過細的粉末涂料就隨氣流從上部帶走。這種設(shè)備對15μm 以上粉末涂料的回收率高達93%~94%。為了提高回收效率，開發(fā)了吹進二次空氣的改進型旋風分離設(shè)備。改進型二次旋風分離器的氣流流向和基本原理示意見圖1。高性能旋風分離器和高性能二次旋風分離器回收粉末涂料時，對不同粒度粉末涂料的回收效率的影響見圖2。從圖中可以看出，經(jīng)過二次旋風回收以后，對微細粉末涂料，特別是 10μm 以下粉末涂料的回收率有明顯的提高。

　　The cyclone separation recycling equipment is composed of a cyclone separator, a blower, a vibrating screen, etc. It is made using the principle of a tornado, similar to a cyclone dust collector. When high-speed airflow passes through the upper cylindrical part of the inverted cone separator, the airflow rotates at high speed inside the cylinder, while generating centrifugal force inside the inverted cone. This centrifugal force separates heavier powder coating particles. When the recycled powder coating is carried into the separator by the airflow, due to the centrifugal force, the coarse particle powder coating settles at the bottom of the conical cylinder and is recycled; The ultra-fine powder coating is carried away from the upper part by the airflow. This device has a recovery rate of up to 93% to 94% for powder coatings over 15 μ m. In order to improve the recycling efficiency, an improved cyclone separation equipment that blows in secondary air has been developed. Diagram 1 shows the airflow direction and basic principle of the improved secondary cyclone separator. The impact of high-performance cyclone separators and high-performance secondary cyclone separators on the recovery efficiency of powder coatings with different particle sizes is shown in Figure 2. From the figure, it can be seen that after the secondary cyclone recovery, the recovery rate of fine powder coatings, especially powder coatings below 10 μ m, has been significantly improved.

　　圖1 改進型二次旋風分離器的氣流流向和基本原理示意

　　Figure 1 Schematic diagram of the airflow direction and basic principle of the improved secondary cyclone separator

　　1-干凈空氣出口；2-二次空氣室；3-二次空氣噴嘴；4-二次空氣入口；5-未涂著上去的粉末涂料和空氣；6-二次旋風分離室；7-一次旋風分離室；8-擋板；9-回收粉末室；A-A 斷面為含粉末氣流流動圖

　　1. Clean air outlet; 2- Secondary air chamber; 3- Secondary air nozzle; 4- Secondary air inlet; 5- Powder coating and air that have not been applied; 6-Secondary cyclone separation chamber; 7-primary cyclone separation chamber; 8-baffle; 9-Recycling powder room; The A-A section is a flow diagram of powder containing airflow

　　圖2 高性能旋風分離器和高性能二次旋風分離器對不同粉末粒度回收效率的影響

　　Figure 2: The Influence of High Performance Cyclone Separators and High Performance Secondary Cyclone Separators on the Recovery Efficiency of Different Powder Particle Sizes

　　1-高性能二次旋風分離器；2-高性能旋風分離器

　　1. High performance secondary cyclone separator; 2-High performance cyclone separator

　　這種高性能二次旋風分離器的基本原理是：第一次旋風分離回收后排放的含有微細粉末涂料氣流中，從上部吹進二次空氣，通過噴嘴變成高速氣流，進行第二次旋風分離，使微細粉末涂料進一步分離出來。改進型旋風分離器對10pm粉末涂料的回收率達到 99.9%，回收率比前者提高很多。回收的粉末涂料還要經(jīng)過振動篩除去機械雜質(zhì)后，再與新粉末涂料混合后再用。這種回收設(shè)備有以下優(yōu)點：

　　The basic principle of this high-performance secondary cyclone separator is that the airflow containing fine powder coating discharged after the first cyclone separation and recovery is blown into the secondary air from the upper part, which is then transformed into a high-speed airflow through a nozzle for the second cyclone separation, further separating the fine powder coating. The improved cyclone separator achieved a recovery rate of 99.9% for 10pm powder coating, which is much higher than the former. The recycled powder coating needs to go through a vibrating screen to remove mechanical impurities, and then be mixed with new powder coating before use. This recycling device has the following advantages:

　　（1）?粉末涂料的回收率高；

　　（1）? The recovery rate of powder coating is high;

　　（2）設(shè)備的安裝位置比較隨便；

　　(2) The installation location of the equipment is relatively casual;

　　（3）?吸引空氣的位置可以任意選擇。

　　（3）? The location that attracts air can be chosen arbitrarily.

　　設(shè)備有存在以下的缺點：

　　The device has the following drawbacks:

　　（1）設(shè)備的占地面積大，高度高；

　　(1) The equipment has a large footprint and high height;

　　（2）設(shè)備運轉(zhuǎn)時噪音較大；

　　(2) The equipment produces loud noise during operation;

　　（3）有一部分粉塵排放到大氣中去。

　　(3) A portion of the dust is emitted into the atmosphere.

　　為了克服粉塵對大氣的污染，在旋風分離器的后面安裝袋濾器，這種組合體系更好。

　　To overcome the pollution of dust to the atmosphere, a bag filter is installed behind the cyclone separator, which is a better combination system.

　　二、袋濾式回收設(shè)備

　　2、 Bag filter recycling equipment

　　袋濾式回收設(shè)備是由袋濾器、振蕩器、抽風機、振動篩等組成（見圖3）。這種設(shè)備的基本原理是當帶有噴溢粉末涂料的氣流通過袋濾器時，只有空氣透過濾布，粉末涂料卻通不過去，從而使粉末涂料從空氣中分離出來，分離的粉末涂料進行收集，然后經(jīng)振動篩過篩除去雜質(zhì)，再與新粉末涂料混合后再用。這種設(shè)備的粉末涂料回收效率達99.9%，回收效率決定于濾布的材質(zhì)和孔隙，用于濾布的材料有毛氈、帆布、尼龍布、滌綸布和其他合成纖維材料等。

　　The bag filter recycling equipment is composed of bag filters, oscillators, exhaust fans, vibrating screens, etc. (see Figure 3). The basic principle of this device is that when the airflow with spilled powder coating passes through the bag filter, only the air passes through the filter cloth, but the powder coating cannot pass through, so that the powder coating is separated from the air. The separated powder coating is collected, then sieved through a vibrating screen to remove impurities, and mixed with new powder coating before use. The powder coating recovery efficiency of this equipment reaches 99.9%, which depends on the material and pores of the filter cloth. Materials used for filter cloth include felt, canvas, nylon cloth, polyester cloth, and other synthetic fiber materials.

　　圖3 袋濾式粉末涂料回收設(shè)備

　　Figure 3 Bag filter powder coating recycling equipment

　　1-電機；2-抽風機；3-干凈空氣出口；4-濾布；5-粉末留在濾布外面；6-振蕩器；7-粉末涂料；8-回收；9-未涂著上去的粉末涂料

　　1. Motor; 2- Exhaust fan; 3- Clean air outlet; 4- Filter cloth; 5- Powder left outside the filter cloth; 6-oscillator; 7-Powder coating; 8- Recycling; 9- Powder coating not applied

　　為了保證濾布的正常過濾功能，必須及時清掃附著于濾布上的粉末涂料。清掃的方法有兩種，一種是振蕩法；另一種是壓縮空氣反吹法。振蕩法是用振蕩裝置定時振蕩濾布，振掉附著在濾布上的粉末涂料。壓縮空氣反吹法是定時從袋濾器的濾布外面，往里吹壓縮空氣，把附著在濾布上的粉末涂料吹掉，保證濾布暢通。在壓縮空氣反吹法中使用的空氣流的速度為5~10m/s。這種設(shè)備有以下優(yōu)點：

　　In order to ensure the normal filtering function of the filter cloth, it is necessary to promptly clean the powder coating attached to the filter cloth. There are two methods for cleaning, one is the oscillation method; Another method is the compressed air blowback method. The oscillation method is to use an oscillation device to oscillate the filter cloth at regular intervals, and shake off the powder coating attached to the filter cloth. The compressed air back blowing method is to periodically blow compressed air from the outside of the filter cloth of the bag filter into the inside, blowing off the powder coating attached to the filter cloth to ensure its smoothness. The velocity of the air flow used in the compressed air blowback method is 5-10m/s. This device has the following advantages:

　　（1）粉末涂料的回收率高，排放空氣比較干凈；

　　(1) The recovery rate of powder coating is high, and the air emissions are relatively clean;

　　（2）比起旋風分離式回收設(shè)備，運轉(zhuǎn)時嗓音比較小；

　　(2) Compared to cyclone separation recycling equipment, the noise during operation is relatively low;

　　（3）設(shè)備所占面積和體積比旋風分離式回收設(shè)備小。

　　(3) The area and volume occupied by the equipment are smaller than those of cyclone separation recycling equipment.

　　缺點是設(shè)備清掃和換色比較困難。當不要求回收粉末涂料時可以單獨使用，一般情況下與旋風分離器配套使用。

　　The disadvantage is that it is difficult to clean and change the color of the equipment. When powder coating recycling is not required, it can be used alone and is generally used in conjunction with a cyclone separator.

　　三、彈筒（濾芯）式回收設(shè)備

　　3、 Bullet tube (filter element) type recycling equipment

　　彈筒（濾芯）式回收粉末涂料設(shè)備是袋濾式回收設(shè)備的改進型，其回收的基本原理是一樣的，主要區(qū)別在于過濾裝置的小型化和高效化。彈筒（濾芯）式過濾器的結(jié)構(gòu)及原理示意見圖4，裝有彈筒（濾芯）式過濾器粉末涂料回收設(shè)備的涂裝系統(tǒng)見圖5。這種回收粉末系統(tǒng)的關(guān)鍵設(shè)備是彈筒（濾芯）式過濾器，直接可安放在噴粉室內(nèi)部。

　　The drum (filter element) type powder coating recycling equipment is an improved version of the bag filter type recycling equipment, and its basic principle of recycling is the same, with the main difference being the miniaturization and high efficiency of the filtering device. The structure and principle diagram of the cartridge (filter element) filter are shown in Figure 4, and the coating system equipped with the cartridge (filter element) filter powder coating recycling equipment is shown in Figure 5. The key equipment of this powder recycling system is a cartridge (filter element) filter, which can be directly placed inside the powder spraying room.

　　圖4 彈筒（濾芯）式過濾器結(jié)構(gòu)及原理示意圖

　　Figure 4 Schematic diagram of the structure and principle of the cartridge (filter element) filter

　　（1）運動狀態(tài)；（2）清洗狀態(tài)

　　(1) Movement status; (2) Cleaning status

　　1-干凈空氣出口；2-吹氣管；3-濾芯；4-含粉末涂料入口；5-吹進空氣；6-粉末涂料

　　1. Clean air outlet; 2. Blow the trachea; 3- Filter element; 4- Inlet containing powder coating; 5- Blow in air; 6-Powder coating

　　圖5 裝有彈筒（濾芯）式過濾器粉末涂料回收設(shè)備的涂裝系統(tǒng)

　　Figure 5 Coating system equipped with bullet tube (filter element) filter powder coating recycling equipment

　　1-噴槍；2-電源；3-噴粉室；4-被涂物；5-彈筒（濾芯）式粉末回收裝置；6-旋風分離器；7-旋轉(zhuǎn)閥；8-供粉末槽；9-泵；10-容量送料器

　　1. Spray gun; 2- Power supply; 3- Powder spraying room; 4- Coated material; 5-cartridge (filter) type powder recovery device; 6-Cyclone separator; 7-Rotary valve; 8-Powder supply tank; 9-Pump; 10 Capacity feeder

　　當噴溢的粉末涂料隨空氣流進入彈筒（濾芯）式過濾器內(nèi)部時，由于濾芯的過濾作用，粉末涂料就不能透過濾芯，附著在濾芯外壁或者落到濾芯底部，只有空氣透過濾芯壁，排放到外部。因為濾芯頂部裝有一個噴嘴，定時地往濾芯內(nèi)部反吹壓縮空氣，把附著在濾芯外壁的粉末涂料吹下來，落到濾芯的下面。當回收粉末涂料達到一定量時，通過傾斜板把粉末涂料收集到噴粉室底部，經(jīng)過過篩，除去機械雜質(zhì)，跟新粉混合后使用。另外，濾芯達到規(guī)定使用壽命以后，及時更換新濾芯，以確保回收效果。這種設(shè)備有以下優(yōu)點：

　　When the sprayed powder coating enters the interior of the cartridge (filter element) filter with the air flow, due to the filtering effect of the filter element, the powder coating cannot pass through the filter element and adheres to the outer wall of the filter element or falls to the bottom of the filter element. Only the air passes through the filter element wall and is discharged to the outside. Because the top of the filter element is equipped with a nozzle that periodically blows compressed air back into the interior of the filter element, blowing off the powder coating attached to the outer wall of the filter element and falling underneath it. When the amount of recycled powder coating reaches a certain level, the powder coating is collected at the bottom of the powder spraying chamber through a tilted plate, sieved to remove mechanical impurities, and mixed with new powder before use. In addition, after the filter element reaches the specified service life, it should be replaced with a new filter element in a timely manner to ensure the recycling effect. This device has the following advantages:

　　（1）?設(shè)備的占地空間小，彈筒（濾芯）式過濾器可以直接安裝在噴粉室內(nèi)部；

　　（1）? The equipment has a small footprint, and the cartridge (filter element) filter can be directly installed inside the powder spraying room;

　　（2）粉末涂料回收系統(tǒng)的回路很短，涂料的物性變化小，涂料的損失也少；

　　(2) The circuit of the powder coating recycling system is very short, the physical properties of the coating change little, and the loss of the coating is also minimal;

　　（3）不存在粉塵爆炸的危險，涂裝的安全性高；

　　(3) There is no risk of dust explosion, and the safety of painting is high;

　　（4）過濾器的濾芯更換方便，換涂料顏色和品種簡單。

　　(4) The filter element of the filter is easy to replace, and changing the color and variety of the coating is simple.

　　缺點是粉末涂料的回收容量有限，不適用于大批量自動化流水線上使用。這種設(shè)備基本上是單獨使用。

　　The disadvantage is that the recycling capacity of powder coatings is limited and not suitable for use on large-scale automated assembly lines. This type of device is basically used alone.

　　四、傳送帶式回收設(shè)備

　　4、 Conveyor belt recycling equipment

　　傳送帶式粉末涂料回收設(shè)備是通過安裝在噴粉室下面，用過濾布制成，并不停地運轉(zhuǎn)的傳送帶回收粉末涂料。當噴粉室內(nèi)進行噴涂時，噴溢的粉末涂料就隨氣流進入回收設(shè)備，空氣就透過過濾布制成的傳送帶向外排放，粉末涂料就被傳送帶捕集，并由傳送帶送到真空吸粉器處，把粉末從傳送帶吸下，送往旋風分離器和袋濾器進行回收（見圖6）。

　　The conveyor belt type powder coating recycling equipment is installed under the powder spraying room, made of filter cloth, and runs continuously to recycle powder coating. When spraying in the powder spraying room, the spilled powder coating enters the recovery equipment with the airflow, and the air is discharged outward through the conveyor belt made of filter cloth. The powder coating is captured by the conveyor belt and sent to the vacuum powder absorber by the conveyor belt. The powder is sucked down from the conveyor belt and sent to the cyclone separator and bag filter for recovery (see Figure 6).

　　1-噴粉室；2-過濾傳送帶；3-噴槍；4-真空吸粉器；5-往復移行機；6-排風過濾器；7-排風扇；8-高性能過濾器；9-微型旋風分離器；10-旋轉(zhuǎn)閥；11-振動篩；12-涂料槽；13-超細粉收集器；14-袋濾器；15-安全過濾器；16-回收空氣；17-涂裝控制柜；18-定量供粉裝置；19-反沖噴嘴；20-換色器

　　1. Powder spraying room; 2- Filter conveyor belt; 3- Spray gun; 4- Vacuum powder suction device; 5-reciprocating moving machine; 6-Exhaust air filter; 7-exhaust fan; 8-High performance filters; 9-Micro cyclone separator; 10- Rotary valve; 11- vibrating screen; 12- Paint tank; 13- Ultra fine powder collector; 14- Bag filter; 15- Safety filter; 16- Recycling air; 17- Coating control cabinet; 18- Quantitative powder supply device; 19- Backwash nozzle; 20- Color changer

　　回收粉末涂料經(jīng)振動篩過篩除去機械雜質(zhì)，再與新粉末按比例混合后，供涂裝體系使用。從噴粉室排放的空氣是經(jīng)過濾器凈化以后排放大氣。這種設(shè)備可以單獨使用，也可以和其他回收設(shè)備組合后使用，圖6是同旋風分離器和袋濾器組合使用的例子。這種設(shè)備有以下優(yōu)點：

　　Recycled powder coating is sieved through a vibrating screen to remove mechanical impurities, and then mixed with new powder in proportion for use in the coating system. The air discharged from the powder spraying room is purified by a filter before being released into the atmosphere. This device can be used alone or in combination with other recycling equipment. Figure 6 shows an example of using it in combination with a cyclone separator and a bag filter. This device has the following advantages:

　　（1）噴粉室的換氣量小（5m^2/min），空氣的流動速度分布均勻，噴槍噴出的粉末噴束也比較均勻。

　　(1) The ventilation rate of the powder spraying room is small (5m ^ 2/min), the air flow velocity is evenly distributed, and the powder jet sprayed by the spray gun is also relatively uniform.

　　（2）?換氣扇的動力消耗小，屬于節(jié)能型。

　　（2）? The power consumption of the ventilation fan is low and it belongs to the energy-saving type.

　　（3）如果噴粉室內(nèi)部的頂部和側(cè)面內(nèi)壁，采用難于附著粉末涂料的特材料，將為過濾式傳送帶的換色和換品種帶來方便。

　　(3) If special materials that are difficult to adhere to powder coatings are used on the top and side walls inside the powder spraying room, it will bring convenience to the color and variety change of the filter conveyor belt.

　　缺點是連同設(shè)備的附屬系統(tǒng)在內(nèi)，整個回收系統(tǒng)結(jié)構(gòu)比較復雜。

　　The disadvantage is that the entire recycling system structure, including the ancillary systems of the equipment, is relatively complex.

　　五、薄膜式回收設(shè)備

　　5、 Thin film recycling equipment

　　薄膜式回收設(shè)備涂裝系統(tǒng)見圖7，噴粉室內(nèi)部的所有壁面都由透明塑料薄膜覆蓋，噴粉室外部是由旋風分離器和袋濾器組成的完整的粉末涂料回收系統(tǒng)。噴粉室的框架由管子構(gòu)成，上部安放新薄膜，底部安放用過的薄膜，當需要換色時，用過的薄膜卷起來回收粉末，同時重新鋪新薄膜。為了回收粉末涂料，噴粉室底部設(shè)計成圓筒狀，再與旋風分離器和袋濾器相連結(jié)。這種回收系統(tǒng)的優(yōu)點是換色時間短，10分鐘左右可以換色，適用于換色多的涂裝體系。

　　The coating system of the film recycling equipment is shown in Figure 7. All walls inside the powder spraying room are covered with transparent plastic film, and the outside of the powder spraying room is a complete powder coating recycling system composed of a cyclone separator and a bag filter. The frame of the powder spraying room is composed of pipes, with a new film placed at the top and a used film placed at the bottom. When a color change is needed, the used film is rolled up to recover the powder and a new film is laid. In order to recycle powder coating, the bottom of the powder spraying chamber is designed in a cylindrical shape and connected to a cyclone separator and a bag filter. The advantage of this recycling system is its short color change time, which can be changed in about 10 minutes, making it suitable for coating systems with multiple color changes.

　　本文由   自動噴粉線 友情奉獻.更多有關(guān)的知識請點擊  http://www.kuaijipeixun.cn/   真誠的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識我們將會陸續(xù)向大家奉獻.敬請期待.

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