CN209971468U - Dust-absorbing and smoke-discharging system for extruder - Google Patents
Dust-absorbing and smoke-discharging system for extruder Download PDFInfo
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- CN209971468U CN209971468U CN201920366461.9U CN201920366461U CN209971468U CN 209971468 U CN209971468 U CN 209971468U CN 201920366461 U CN201920366461 U CN 201920366461U CN 209971468 U CN209971468 U CN 209971468U
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Abstract
The utility model relates to a dust-absorbing and smoke-discharging system for an extruder, which comprises a gas-collecting hood, a ventilator and an exhaust chimney, wherein gas circuits of the gas-collecting hood, the ventilator and the exhaust chimney are connected with each other in a through way; the gas collecting hood is used for sucking powder and waste gas generated by a feeding port of the extruder and/or an exhaust port of the extruder. The system also comprises a powder and waste gas collecting and filtering device; the powder and waste gas collecting and filtering device is connected between the gas collecting hood and the ventilator and the gas path is communicated, and the air outlet of the ventilator is connected with the exhaust chimney. The utility model discloses a system is high to raise dust, the harmful flue gas collection rate that produce in the extruder production process to accord with discharge to reach standard after handling through the environmental protection. The system equipment is simplified, and the operation is simple.
Description
Technical Field
The utility model belongs to the technical field of polymer processing and specifically relates to a dust absorption system of discharging fume for extruder.
Background
The twin-screw extruder, one of the main equipments for polymer processing, has been widely used in polymer processing and modification, and is the most important equipment for plastic modification at present. In the plastic modification production and processing process, the feeding port of the extruder not only can generate various smoke, but also can easily generate dust flying above the feeding port in the process of feeding the stirred material into the double screws for products containing powder components in a formula system. The middle section of the double-screw extruder is generally provided with an exhaust hole (glass fiber opening), and the modified plastic can also generate partial harmful waste gas in the heating, melting and extruding process. At present, the dedusting and exhausting solution adopted by most modification plants is to install a large-scale exhaust fan on the wall of a production workshop, the dedusting and exhausting effect is common, the environmental protection problem exists, dust and harmful waste gas are only subjected to space transfer, and the treatment and the exhaust are not achieved.
The treatment measures of waste gas and dust generated in the production process of the existing double-screw extruder mainly have the following defects:
1. the exhaust gas collection rate of the exhaust dust removal system is low, and the exhaust gas collection rate is only transferred in space and diffused to a larger environment space, so that the environmental protection problem is not solved and sustainable development is not achieved.
2. The large exhaust fan is used for dust removal and exhaust, and has large energy consumption and poor effect, and the high concentration of harmful dust and waste gas in a workshop is not beneficial to the long-term occupational health of production operators.
3. The effective exhaust dust removal system has high manufacturing cost and high operation and maintenance cost, and common enterprises select less construction and use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in: the utility model provides a dust absorption system of discharging fume for extruder solves dust waste gas collection rate in the extruder production process and hangs down, purifying effect is poor, the polluted environment scheduling problem.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a dust-absorbing and smoke-discharging system for an extruder comprises a gas-collecting hood, a ventilator and an exhaust chimney, wherein gas paths of the gas-collecting hood, the ventilator and the exhaust chimney are connected in a run-through manner; the gas collecting hood is used for sucking powder and waste gas generated by a feeding port of the extruder and/or an exhaust port of the extruder; the system also comprises a powder and waste gas collecting and filtering device; the powder and waste gas collecting and filtering device is connected between the gas collecting hood and the ventilator and the gas path is communicated, and the air outlet of the ventilator is connected with the exhaust chimney.
Preferably, powder and waste gas are collected filter equipment and are provided with two-layer filter screen structure: the first layer structure is dust adsorption filtration cellucotton, and the second layer structure is the active carbon device of absorption harmful waste gas.
Preferably, the two layers of filter screen structures face the airflow direction and are arranged in front and at the back; the two-layer filter screen structure is arranged in the waste gas collecting and filtering device in a replaceable way; the first layer structure is a dust adsorption and filtration cellucotton which can be extracted and replaced, and the second layer structure is a drawer type active carbon device; the powder and the waste gas collecting and filtering device are connected with the air inlet end of the ventilator through a hose.
In some embodiments, the powder and the waste gas collecting and filtering device are integrally a hollow tank body, and an air inlet and an air outlet are arranged on two sides of the hollow tank body and are respectively communicated with the gas collecting hood and the ventilator pipeline; the two-layer filter screen structure can be inserted into the hollow tank body in a removable or drawer mode.
In some embodiments, the two layers of filter screen structures are inserted into the cross section of the hollow tank body, and each layer of filter screen structure is matched with the cross section of the hollow tank body in shape and size and is hermetically connected with the shell of the hollow tank body after being inserted; replacing the corresponding filter screen structure by extracting or drawing out each layer of filter screen structure; the two layers of filter screen structures are arranged in parallel opposite to the airflow direction at intervals.
In some embodiments, the ventilator serves as a power source for the system to generate negative pressure to the gas collecting hood end so as to suck the powder and waste gas generated by the extruder, and also serves as a power source for filtering and adsorbing the gas after the treatment and discharging the gas to the exhaust chimney; the ventilator is a high-pressure centrifugal ventilator; and the top of the exhaust chimney is provided with a rainproof device.
In some embodiments, the system comprises two gas-collecting hoods, which are respectively arranged above a feeding port and a gas exhaust port of the extruder with the openings facing downwards; the gas-collecting hood is of a trapezoidal semi-open structure.
In some embodiments, the two gas collecting hoods are respectively communicated with the powder and the waste gas collecting and filtering device through a branch pipeline; the branch pipeline is provided with an air volume adjusting valve, and the system controls the air volume demand size through the air volume adjusting valve and the fan rotating speed according to the actual production state of the extruder.
In some embodiments, the gas collecting hood is connected with the branch pipeline through a flange; the flange is provided with a sealing gasket.
In some embodiments, the two branch pipelines are connected with the main pipeline through an elbow and a tee joint, and the other end of the main pipeline is connected with and communicated with the powder and the waste gas collecting and filtering device; the main pipeline is provided with an air volume adjusting valve.
The utility model has the advantages that:
the utility model discloses an adopt powder and waste gas to collect filter equipment and ventilation blower cooperation, the dust and the waste gas that the extruder produced are siphoned away to the brute force and purification treatment carries out, can effectively collect dust and waste gas, purify dust and waste gas, avoid polluted environment or influence the health. Specifically, the method comprises the following steps:
the utility model discloses the system is high to raise dust, the harmful flue gas collection rate that produce in the extruder production process to accord with discharge to reach standard after handling through the environmental protection. The system has simplified equipment, simple operation, low investment cost for initial construction, convenient later operation and maintenance and low cost. The production environment of a plastic modification extrusion workshop is effectively improved, and the occupational hazards of production staff are reduced.
Drawings
Fig. 1 is a schematic structural view of a dust and smoke suction system for an extruder according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the present invention relates to a dust absorption and smoke exhaust system 10 (hereinafter referred to as system 10) 10 for an extruder, which is used for absorbing and treating dust and waste gas generated by an extruder 20, so that the emission reaches the standard, and the environmental protection requirement is met. The extruder 20 is provided with a feeding port 21 for feeding the material and an exhaust port 22.
The system 10 comprises a gas collecting hood 1, a powder and waste gas collecting and filtering device 5, a ventilator 3 and an exhaust chimney 4, wherein gas paths are sequentially communicated through a ventilation pipeline, for example, a white iron ventilation pipeline. The gas-collecting hood 1 is arranged above the feeding port 22 of the extruder and/or the exhaust port 22 of the extruder and is used for sucking raised dust and smoke generated by the feeding port 22 of the extruder and smoke generated by the exhaust port 22 of the extruder. Powder and waste gas collection filter equipment 5 are connected between gas collecting channel 1 and ventilation blower 3 and the gas circuit intercommunication, and the end of breathing in of ventilation blower 3 is collected filter equipment 5 and gas collecting channel 1 intercommunication through powder and waste gas, and exhaust chimney 4 is connected to the air outlet of ventilation blower 3 exhaust end promptly. The dust and the flue gas are conveyed to a filtering device 5 through a ventilation pipeline for collection and filtering treatment; the powder and the waste gas collecting and filtering device 5 are connected with the ventilator 3 through a hose, and the gas after filtering and adsorbing treatment is discharged through the exhaust chimney 4 by taking the high-pressure centrifugal ventilator 3 as a power source, so that adverse effects on a workshop and the surrounding environment can be avoided.
As a specific embodiment, the system 10 includes a gas collecting hood 1, a branch pipeline air volume adjusting valve 60, a white iron ventilation main pipeline 2, a main pipeline air volume adjusting valve 7, a powder and waste gas collecting and filtering device 5, a high-pressure centrifugal ventilator 3, and an exhaust chimney 4. The equipment connection sequence of the present system 10 is: the two trapezoidal semi-open gas collecting hoods 1 are connected with a branch pipeline 6 with an air volume adjusting valve through a flange with a sealing gasket; the two branch pipelines 6 are connected with the main pipeline 2 of the white iron ventilation pipeline through an elbow 61 and a tee 20; the main pipeline 2 is also provided with an air volume regulating valve 7, and the other end of the main pipeline 2 is connected with the powder and waste gas collecting and filtering device 5; the waste gas collecting and filtering device 5 is connected with the high-pressure centrifugal fan 3 through a hose, and an air outlet of the high-pressure centrifugal fan 3 is connected with the exhaust chimney 4; a rain-proof device 8 is designed and installed on the top of the exhaust chimney 4.
The ventilation pipeline comprises branch pipelines 6 connected with the gas collecting hood 1 and a main pipeline 2 connected with the branch pipelines 6, branch pipelines 6 of the ventilation pipeline are provided with branch pipeline air quantity regulating valves 60 for regulating the air quantity of the branch pipelines, and the main pipeline 2 is provided with a main pipeline air quantity regulating valve 7 for regulating the air quantity of the main pipeline 2.
Specifically, the galvanized iron ventilation pipeline comprises two branch pipelines 6 and a converged main pipeline 2, the two branch pipelines 6 are connected with the main pipeline 2 through an elbow 61 and a tee joint 20, and the other end of the main pipeline 2 is connected and communicated with powder and a waste gas collecting and filtering device 5.
The system 10 of the present embodiment includes two gas collecting channels 1, and only one gas collecting channel may be provided, or more than two gas collecting channels may be provided, as required. The gas collecting hood 1 is in a trapezoidal semi-open structure, and the opening of the gas collecting hood is downward arranged above a feeding port 21 of the extruder and an exhaust port 22 of the extruder, and the gas collecting hood is used for collecting dust generated by the feeding port 21 and smoke released by the exhaust port 22 in the production process. The two gas-collecting hoods 1 are respectively communicated with the powder and the waste gas collecting and filtering device 5 through a branch pipeline 6; the branch pipeline 6 is provided with an air volume adjusting valve 60, and the system 10 controls the air volume demand according to the actual production state of the extruder through the air volume adjusting valves 60 and 7 and the rotating speed of the fan 3.
The gas-collecting channel 1 is connected with the branch pipeline 6 by a flange; the flange is provided with a sealing gasket.
In this embodiment, the whole body of the powder and the waste gas collecting and filtering device 5 is a hollow tank body, the two sides of the hollow tank body are provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively communicated with the pipeline between the gas collecting hood 1 and the ventilator 3. Powder and waste gas collection filter equipment 5's hollow tank is internal to be provided with two-layer filter screen structure: the first layer structure is dust adsorption filtration cellucotton 52, and the second layer structure is active carbon device 53 that adsorbs harmful waste gas. The two layers of filter screen structures are arranged in front and back in the way of facing the airflow direction. The two-layer filter screen structures 52 and 53 are arranged in the exhaust gas collecting and filtering device 5 in a replaceable manner, specifically, the two-layer filter screen structures 52 and 53 are inserted into the hollow tank body of the exhaust gas collecting and filtering device 5 in a removable or drawer-type manner, wherein the first layer structure is a dust adsorption and filtration fiber cotton 52 which can be replaced in a removable manner, and the second layer is a drawer-type activated carbon device 53. The two-layer filter screen structure in the powder and waste gas collecting and filtering device 5 adopts a drawer type structure which can be flexibly replaced; the consumables can be replaced conveniently in the later period.
Preferably, the two layers of filter screen structures 52 and 53 are inserted into the cross section of the hollow tank body, each layer of filter screen structure is matched with the cross section of the hollow tank body in shape and size, and is hermetically connected with the shell of the hollow tank body after being inserted; and replacing the corresponding filter screen structure by extracting or drawing out each layer of filter screen structure. The two layers of filter screen structures are arranged in parallel opposite to the airflow direction at intervals. Most of dust is filtered out by the dust and the waste gas sucked by the gas collecting hood 1 through the first layer of dust-absorbing cellucotton, and the rest of tail gas is adsorbed by the second layer of active carbon.
The ventilator 3 is preferably a high pressure centrifugal ventilator, available in the prior art. The system 10 generates a higher negative pressure at the end of the gas collecting hood 1 by means of the high-pressure centrifugal fan 3, so that the gas collecting hood 1 forcibly sucks the powder and the waste gas generated by the extruder feeding port 21 and/or the extruder exhaust port 22. When the high-pressure centrifugal fan works, air is sucked in from the ventilation pipeline connected with the air suction end by the high-pressure centrifugal fan 3, so that higher negative pressure is generated in the ventilation pipeline, air below the gas collecting hood 1 is forcibly sucked, and the sucked air is discharged from the exhaust chimney 4 connected with the exhaust end.
The utility model discloses a when system 10 moves, start high-pressure centrifugal fan 3 earlier and make the gas collecting channel end produce higher negative pressure, the raise dust that extruder feed inlet 21 produced, the flue gas that the flue gas produced with extruder gas vent 22 are forced by the gas collecting channel 1 of top to be sucked, carry through the white iron ventilation pipeline. According to the amount of flue gas generated in the actual production state of the extruder, the air quantity demand is controlled through the air quantity regulating valves 60 and 7 and the rotating speed of the ventilator. Dust, flue gas are carried through the galvanized iron ventilation pipeline and are arrived powder and waste gas collection filter equipment 5 and collect, filtration treatment, filter most dust through first layer dust absorption cellucotton, and all the other tail gases carry out adsorption treatment through second floor active carbon. The harmful smoke volatilized in the heating, melting and extruding process of the modified plastic is mainly organic substances with low molecular weight, and can reach the emission standard of environmental protection through the adsorption and purification of the active carbon. The gas after the filtration and adsorption treatment is discharged through the exhaust chimney 4 by using the high-pressure centrifuge 3 as a power source, and adverse effects on workshops and the surrounding environment are avoided. The fiber cotton adsorbs and collects dust, and harmful gas adsorbed by the activated carbon layer can be periodically pumped out and replaced.
In the above embodiment, all the parts of the ventilation pipeline, the gas collecting hood 1, the powder and exhaust gas collecting and filtering device 5, the ventilator 3, and the exhaust chimney 4 can be fixedly installed by the supporting body such as the wall, the installation table, the supporting column, and the ceiling. The mounting structure is various applicable mounting modes in the prior art, and is not described herein.
Can effectual solution double screw extruder produce raise dust, harmful flue gas collect the emission problem through above scheme, the initial stage input construction cost is low for system's equipment simplification, later stage operation maintenance low cost, convenient operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a dust absorption system of discharging fume for extruder which characterized in that: the system comprises a gas collecting hood, a ventilator and an exhaust chimney, wherein gas paths of the gas collecting hood, the ventilator and the exhaust chimney are connected in a penetrating way; the gas collecting hood is used for sucking powder and waste gas generated by a feeding port of the extruder and/or an exhaust port of the extruder; the system also comprises a powder and waste gas collecting and filtering device; the powder and waste gas collecting and filtering device is connected between the gas collecting hood and the ventilator and the gas path is communicated, and the air outlet of the ventilator is connected with the exhaust chimney.
2. A dust and smoke extraction system for an extruder as claimed in claim 1 wherein: powder and waste gas are collected and are provided with two-layer filter screen structure in the filter equipment: the first layer structure is dust adsorption filtration cellucotton, and the second layer structure is the active carbon device of absorption harmful waste gas.
3. A dust and smoke extraction system for an extruder as claimed in claim 2 wherein: the two layers of filter screen structures are arranged in front and back in the way of facing the airflow direction; the two-layer filter screen structure is arranged in the powder and waste gas collecting and filtering device in a replaceable way; the first layer structure is a dust adsorption and filtration cellucotton which can be extracted and replaced, and the second layer structure is a drawer type active carbon device; the powder and the waste gas collecting and filtering device are connected with the air inlet end of the ventilator through a hose.
4. A dust and smoke extraction system for an extruder as claimed in claim 3 wherein: the powder and waste gas collecting and filtering device is integrally a hollow tank body, an air inlet and an air outlet are arranged on two sides of the hollow tank body, and the air inlet and the air outlet are respectively communicated with the gas collecting hood and the ventilator pipeline; the two-layer filter screen structure can be inserted into the hollow tank body in a removable or drawer mode.
5. A dust and smoke extraction system for an extruder as claimed in claim 4 wherein: the two layers of filter screen structures are inserted into the cross section of the hollow tank body, each layer of filter screen structure is matched with the cross section of the hollow tank body in shape and size, and is hermetically connected with the shell of the hollow tank body after being inserted; replacing the corresponding filter screen structure by extracting or drawing out each layer of filter screen structure; the two layers of filter screen structures are arranged in parallel opposite to the airflow direction at intervals.
6. A dust and smoke extraction system for an extruder according to any one of claims 1 to 5, wherein: the ventilator is used as a power source for the system to generate negative pressure for the gas collecting hood end so as to suck powder and waste gas generated by the extruder, and also used as a power source for filtering and adsorbing the gas after treatment and discharging the gas to an exhaust chimney; the ventilator is a high-pressure centrifugal ventilator; and a rainproof device is arranged at the top of the exhaust chimney.
7. A dust and smoke extraction system for an extruder as claimed in claim 6 wherein: the system comprises two gas-collecting hoods, and the openings of the two gas-collecting hoods are downward and are respectively arranged above a feeding port and an exhaust port of the extruder; the gas-collecting hood is of a trapezoidal semi-open structure.
8. A dust and smoke extraction system for an extruder as claimed in claim 7 wherein: the two gas-collecting hoods are respectively communicated with the powder and the waste gas collecting and filtering device through a branch pipeline; the branch pipeline is provided with an air volume adjusting valve, and the system controls the air volume demand size through the air volume adjusting valve and the fan rotating speed according to the actual production state of the extruder.
9. A dust and smoke extraction system for an extruder as claimed in claim 8 wherein: the gas-collecting hood is connected with the branch pipeline through a flange; the flange is provided with a sealing gasket.
10. A dust and smoke extraction system for an extruder as claimed in claim 8 wherein: the two branch pipelines are connected with a main pipeline through an elbow and a tee joint, and the other end of the main pipeline is connected and communicated with the powder and a waste gas collecting and filtering device; the main pipeline is provided with an air volume adjusting valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366461.9U CN209971468U (en) | 2019-03-21 | 2019-03-21 | Dust-absorbing and smoke-discharging system for extruder |
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| CN201920366461.9U CN209971468U (en) | 2019-03-21 | 2019-03-21 | Dust-absorbing and smoke-discharging system for extruder |
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| CN209971468U true CN209971468U (en) | 2020-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521936A (en) * | 2021-08-13 | 2021-10-22 | 湖州名远环保科技有限公司 | Factory waste gas purification environmental protection equipment |
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2019
- 2019-03-21 CN CN201920366461.9U patent/CN209971468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521936A (en) * | 2021-08-13 | 2021-10-22 | 湖州名远环保科技有限公司 | Factory waste gas purification environmental protection equipment |
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