CN220763492U - VOC gas exhaust device for wood-plastic plate extruder - Google Patents
VOC gas exhaust device for wood-plastic plate extruder Download PDFInfo
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- CN220763492U CN220763492U CN202322614525.1U CN202322614525U CN220763492U CN 220763492 U CN220763492 U CN 220763492U CN 202322614525 U CN202322614525 U CN 202322614525U CN 220763492 U CN220763492 U CN 220763492U
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- collecting hood
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- exhaust
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000007423 decrease Effects 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- 239000002023 wood Substances 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000007665 sagging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a VOC gas exhaust device for a wood-plastic plate extruder, which comprises: the device comprises a gas collecting hood and a sliding rail, wherein the two ends of the gas collecting hood are open, the inner diameter of the gas collecting hood gradually decreases along with the flowing direction of exhaust air flow, the large-diameter end of the gas collecting hood faces to the plate discharging position of the extruder, the small-diameter end of the gas collecting hood is communicated with an exhaust pipe, and reinforcing cross beams are arranged on the periphery of the top wall of the gas collecting hood; the reinforcing cross beam is connected to the sliding rail in a sliding way, so that the gas collecting hood can translate along the sliding rail under the action of external force; a drooping shielding curtain is arranged on the circumference of the large-diameter end of the gas collecting hood, and a reinforcing strip for supporting is arranged on the inner side of the shielding curtain; according to the utility model, the gas collecting cover is arranged on the sliding rail in a sliding manner, so that the gas collecting cover can be slid above the die in normal production of equipment, VOC gas is collected, and meanwhile, a large amount of gas is prevented from escaping from the gas collecting cover area to flow into the surrounding environment through the arrangement of the shielding, and disturbance of external gas flow to the exhaust gas flow formed in the area below the gas collecting cover is reduced.
Description
Technical Field
The utility model relates to the technical field of wood-plastic plate manufacturing, in particular to a VOC gas exhaust device for a wood-plastic plate extruder.
Background
The wood plastic plate extruder can release a large amount of VOC gas in the production process, so that the gas collecting hood is additionally arranged, and activated carbon is adopted for adsorption treatment, but in the normal production process, the existence of the gas collecting hood has a certain influence on the normal production, such as the debugging of a die before starting up and the maintenance of equipment faults.
The sliding type gas collecting hood in the prior art can solve the problems, the movable slideway is additionally arranged above the gas collecting hood, the gas collecting hood can be slid to the upper part of the die in normal production of equipment and used for collecting VOC gas, the gas collecting hood can be pushed away from an operation area to facilitate maintenance or debugging of the equipment when the equipment is debugged or maintained, but the gas collecting hood is used for collecting VOC-containing gas below the gas collecting hood, and the negative pressure ventilation process of the gas collecting hood is easily disturbed by surrounding air flow due to the lack of effective blocking measures for escaping the gas in the circumferential direction of the gas inlet of the gas collecting hood, so that the collection effect of the VOC gas is poor and the human health is endangered.
Therefore, it is necessary to provide a VOC gas exhaust apparatus for a wood-plastic panel extruder, so as to solve the problem that the collection effect of the gas collecting apparatus in the prior art on VOC gas is poor.
Disclosure of Invention
The utility model aims to provide a VOC gas exhaust device for a wood-plastic plate extruder, which aims to solve the technical problem that a gas collecting device in the prior art has poor collecting effect on VOC gas.
In order to solve the technical problems, the utility model specifically provides the following technical scheme:
in a first aspect of the present utility model, there is provided a VOC gas vent for a wood plastic panel extruder comprising: the two ends of the gas collecting hood are opened, the inner diameter of the gas collecting hood gradually decreases along with the flowing direction of exhaust air flow, the large-diameter end of the gas collecting hood faces to the plate discharging position of the extruder, and the small-diameter end of the gas collecting hood is communicated with an exhaust pipe, so that VOC gas volatilized after plate discharging is collected by the gas collecting hood and then is discharged along the exhaust pipe, and reinforcing cross beams are arranged around the top wall of the gas collecting hood; the gas collecting hood is provided with a gas collecting hood, a sliding rail and a reinforcing cross beam, wherein the reinforcing cross beam is connected to the sliding rail in a sliding way, so that the gas collecting hood can translate along the sliding rail under the action of external force; wherein, the big footpath end circumference of gas collecting channel is upwards equipped with the shielding of sagging, and the inboard of shielding is equipped with the reinforcement strip that is used for supporting to make the shielding form the hindrance to the escape of VOC gas in the below of gas collecting channel.
Further, an active carbon net is arranged on the circumference of the large-diameter end of the gas collecting hood and is used for absorbing the escaped VOC gas.
Further, the wall surface of the gas collecting hood is provided with a double-layer structure, a circulation cavity is formed between the double-layer wall surfaces of the gas collecting hood, and air flow flowing from top to bottom is introduced into the circulation cavity through a fan, so that an air curtain is formed around the lower part of the large-diameter end of the gas collecting hood to prevent VOC gas from escaping.
Further, a plurality of jet pipes are arranged in the circulation cavity, air flow opposite to the flow direction of the exhaust air flow is introduced into each jet pipe through a fan, and the jet pipes extend to the lower part of the gas collecting hood and are close to the discharging plane of the plate; wherein, jet holes are arranged on jet pipes below the gas collecting hood, and the jet holes are all arranged towards the inner side of the gas collecting hood, so that a plurality of airflows flowing towards the inner side of the gas collecting hood are formed to block the escape of VOC gas.
Further, the end of the jet pipe located below the gas-collecting channel is sealed, so that the pressure of the air flow flowing through the jet hole towards the inner side of the gas-collecting channel is increased.
Further, at least two groups of jet holes are symmetrically arranged on each jet pipe along the central axial plane of the jet pipe, and the air flows discharged between the adjacent jet holes on the adjacent jet pipes are combined to form an air curtain for preventing VOC gas from escaping.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model aims to realize the collection of VOC gas by sliding the gas collecting hood arranged on the sliding rail, and in normal production of equipment, the gas collecting hood can be slid above the die, and meanwhile, through the arrangement of the shielding, a large amount of gas is prevented from escaping from the gas collecting hood area to flow into the surrounding environment, and the disturbance of external gas flow to the exhaust gas flow formed in the area below the gas collecting hood is also reduced; when the equipment is debugged or maintained, the gas collecting hood can be pushed away from the operation area so as to facilitate the maintenance or debugging of the equipment.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
Fig. 1 is a schematic structural diagram of an embodiment of a VOC gas exhaust apparatus for a wood-plastic panel extruder according to the present utility model;
FIG. 2 is a perspective view of the hood of FIG. 1 in an embodiment of the present utility model;
FIG. 3 is a schematic view of the gas hood of FIG. 2 in another embodiment of the present utility model;
FIG. 4 is a schematic view of the gas hood of FIG. 2 in another embodiment of the present utility model;
FIG. 5 is a schematic view of the gas hood of FIG. 2 in another embodiment of the present utility model;
FIG. 6 is an enlarged view of I-I of FIG. 5.
Reference numerals in the drawings are respectively as follows:
10. a gas collecting hood; 11. an exhaust pipe; 12. a reinforcing beam; 13. a screen; 131. reinforcing strips; 14. an activated carbon net; 15. a flow-through chamber; 16. jet pipe; 161. jet holes; 20. a slide rail.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2, the present utility model provides a VOC gas exhaust apparatus for a wood plastic panel extruder, comprising:
the two ends of the gas collecting hood 10 are opened, the inner diameter of the gas collecting hood gradually decreases along with the flowing direction of exhaust air flow, the large-diameter end of the gas collecting hood 10 faces to the plate discharging position of the extruder, and the small-diameter end of the gas collecting hood 10 is communicated with the exhaust pipe 11, so that VOC gas volatilized after plate discharging is collected by the gas collecting hood 10 and then is discharged along the exhaust pipe 11, and reinforcing cross beams 12 are arranged on the periphery of the top wall of the gas collecting hood 10;
the sliding rail 20 is connected with the reinforcing cross beam 12 in a sliding way, so that the gas collecting channel 10 can translate along the sliding rail 20 under the action of external force;
wherein, the circumference of the large diameter end of the gas collecting hood 10 is provided with a drooping shielding plate 13, and the inner side of the shielding plate 13 is provided with a reinforcing strip 131 for supporting, thereby the shielding plate 13 forms a barrier to the escape of VOC gas under the gas collecting hood 10.
The utility model aims to realize the collection of VOC gas by sliding the gas collecting hood 10 arranged on the sliding rail 20, and in normal production of equipment, the gas collecting hood 10 can be slid above a die, meanwhile, through the arrangement of the shielding 13, a large amount of gas is prevented from escaping from the region of the gas collecting hood 10 to flow into the surrounding environment, and the disturbance of external gas flow to the exhaust gas flow formed in the region below the gas collecting hood 10 is also reduced; when the equipment is debugged or maintained, the gas collecting hood can be pushed away from the operation area so as to facilitate the maintenance or debugging of the equipment.
In order to solve the problem that VOC gas escapes from the bottom edge of the shielding 13 during collection, as shown in fig. 3, another preferred embodiment of the present utility model is provided, in which an activated carbon net 14 is provided on the circumference of the large diameter end of the gas collecting hood 10, and the activated carbon net 14 is used to absorb the escaping VOC gas.
In this embodiment, the flexible shielding 13 is replaced by the rigid activated carbon net 14, so that the VOC gas can be adsorbed, and the problem that the flexible shielding 13 is affected by the airflow so that it cannot effectively form a blocking effect on the VOC gas is avoided, in other words, the rigid activated carbon net 14 is not deformed by the airflow, and can stably prevent the escape of the VOC gas by absorbing the VOC gas.
In the above embodiment, the activated carbon net 14 needs to be replaced frequently during the use process to ensure the absorption effect, and the replacement time of the activated carbon net 14 is not easy to be grasped accurately, and before the activated carbon net 14 is replaced when the absorption amount of the VOC gas on the activated carbon net is maximum, the VOC gas is easy to escape from the bottom edge of the activated carbon net 14 along the surface thereof, thereby polluting the surrounding environment.
In order to solve the above problems, as shown in fig. 4, in another preferred embodiment of the present utility model, the wall surface of the gas collecting hood 10 has a double-layer structure, a circulation cavity 15 is formed between the double-layer wall surfaces of the gas collecting hood 10, and the inside of the circulation cavity 15 is introduced with an air flow flowing from top to bottom through a fan, so that an air curtain is formed around the periphery under the large diameter end of the gas collecting hood 10 to block the escape of VOC gas.
In this embodiment, the arrangement of the heavy-flow cavity 15 is avoided through the double layers of the gas collecting cover 10, so that the passing air flow forms a circumferential air curtain below the gas collecting cover 10 to obstruct the escape of the VOC gas, and the air flow intensity can be enhanced by increasing the fan power, so that the air curtain extends downwards to a larger extent, the obstruction effect of the air curtain on the VOC gas is more stable, the defect that the VOC gas is easy to escape when the air flow treatment capacity is too large or influenced by the external air flow is overcome, and the fixed length of the shielding 13 or the active carbon net 14 in the embodiment is overcome.
In the above embodiment, although the escape of VOC gas is blocked by the air curtain, it is not able to assist the exhaust air flow formed in the exhaust duct 11 to timely exhaust VOC gas, which is liable to cause air flow accumulation inside the gas collecting hood 10.
In order to solve the above problem, as shown in fig. 5-6, in another preferred embodiment of the present utility model, a plurality of jet pipes 16 are disposed in the flow chamber 15, and air flow opposite to the flow direction of the exhaust air flow is introduced into each jet pipe 16 through a fan, and the jet pipes 16 extend below the gas collecting hood 10 and are close to the discharge plane of the board;
wherein, jet pipe 16 below gas collecting hood 10 is provided with jet holes 161, and jet holes 161 are all opened towards the inner side of gas collecting hood 10, thereby forming a plurality of airflows flowing towards the inner side of gas collecting hood 10 to prevent VOC gas from escaping.
In this embodiment, by arranging the jet pipes 16 opposite to each other, the air flow ejected from the jet holes 161 on the jet pipes flows to the inner side of the gas collecting hood 10 to form convection and converging with the exhaust air flow, so that the escape of the VOC gas is not only hindered, but also the exhaust air flow can be assisted to be timely discharged from the exhaust pipe 11, and the gas is prevented from accumulating in the gas collecting hood 10.
In order to obtain a higher flow rate of the air flow emitted from the jet hole 161 during actual use, the end of the jet pipe 16 below the gas collecting channel 10 is sealed, so that the pressure of the air flow flowing from the jet hole 161 towards the inner side of the gas collecting channel 10 is increased, and the flow rate is correspondingly increased.
In order to avoid VOC gas escaping from the gaps between adjacent jet pipes 16, as shown in fig. 6, the present embodiment preferably has at least two groups of jet holes 161 symmetrically arranged on each jet pipe 16 along its central axis, and the air flows discharged between adjacent jet holes 161 on adjacent jet pipes 16 are combined to form an air curtain for blocking the escape of VOC gas.
In this embodiment, the opening position and angle of the jet hole 161 are further changed, so that the jet direction is changed, so that the jet airflows first fill the gap between the adjacent jet pipes 16 when they meet each other, avoiding the escape of VOC gas, and it should be noted that the jet hole 161 is generally formed along the central axis of the jet pipe 16 in a plurality of positions, so as to stably form a gas curtain for blocking the escape of VOC gas.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.
Claims (6)
1. A VOC gaseous exhaust device for wood plastic panel extruder, its characterized in that includes:
the exhaust hood (10) is provided with openings at two ends and the inner diameter gradually decreases along with the flowing direction of exhaust air flow, the large-diameter end of the exhaust hood (10) faces the plate discharging position of the extruder, and the small-diameter end of the exhaust hood (10) is communicated with the exhaust pipe (11), so that VOC gas volatilized after plate discharging is collected by the exhaust hood (10) and then is discharged along the exhaust pipe (11), and reinforcing cross beams (12) are arranged around the top wall of the exhaust hood (10);
the reinforcing cross beam (12) is connected to the sliding rail (20) in a sliding manner, so that the gas collecting hood (10) can translate along the sliding rail (20) under the action of external force;
the gas collecting hood is characterized in that a sagging shielding plate (13) is arranged on the circumference of the large-diameter end of the gas collecting hood (10), and a reinforcing strip (131) for supporting is arranged on the inner side of the shielding plate (13), so that the shielding plate (13) can form a barrier to the escape of VOC gas under the gas collecting hood (10).
2. A VOC gas exhaust device for a wood plastic panel extruder as claimed in claim 1, wherein,
an active carbon net (14) is arranged on the circumference of the large-diameter end of the gas collecting hood (10), and the active carbon net (14) is used for absorbing the escaped VOC gas.
3. A VOC gas exhaust device for a wood plastic panel extruder as claimed in claim 1, wherein,
the wall surface of the gas collecting hood (10) is of a double-layer structure, a circulation cavity (15) is formed between the double-layer wall surfaces of the gas collecting hood (10), and air flow flowing from top to bottom is introduced into the circulation cavity (15) through a fan, so that an air curtain is formed around the lower part of the large-diameter end of the gas collecting hood (10) to prevent VOC gas from escaping.
4. A VOC gas exhaust device for a wood plastic panel extruder as claimed in claim 3, wherein,
a plurality of jet pipes (16) are arranged in the circulation cavity (15), air flow with the opposite flow direction to the air exhaust air flow is introduced into each jet pipe (16) through a fan, and the jet pipes (16) extend to the lower part of the gas collecting hood (10) and are close to the plate discharging plane;
wherein, be located in the jet pipe (16) of gas-collecting channel (10) below offer jet hole (161), jet hole (161) all are offered towards gas-collecting channel (10) inboard to form the multistrand towards gas-collecting channel (10) inboard air current that flows is in order to hinder the escape of VOC gas.
5. A VOC gas exhaust device for a wood plastic panel extruder as claimed in claim 4, wherein,
the end of the jet pipe (16) located below the gas-collecting hood (10) is sealed, so that the pressure of the air flow flowing towards the inner side of the gas-collecting hood (10) from the jet hole (161) is increased.
6. A VOC gas exhaust device for a wood plastic panel extruder as claimed in claim 5, wherein,
the jet holes (161) are at least symmetrically arranged on each jet pipe (16) along the central axial plane, and the air flows discharged between the adjacent jet holes (161) on the adjacent jet pipes (16) are combined to form an air curtain for preventing VOC gas from escaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322614525.1U CN220763492U (en) | 2023-09-26 | 2023-09-26 | VOC gas exhaust device for wood-plastic plate extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322614525.1U CN220763492U (en) | 2023-09-26 | 2023-09-26 | VOC gas exhaust device for wood-plastic plate extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220763492U true CN220763492U (en) | 2024-04-12 |
Family
ID=90597408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322614525.1U Active CN220763492U (en) | 2023-09-26 | 2023-09-26 | VOC gas exhaust device for wood-plastic plate extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220763492U (en) |
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2023
- 2023-09-26 CN CN202322614525.1U patent/CN220763492U/en active Active
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