阅读说明：本技术 自动吸塑机 (Automatic plastic sucking machine ) 是由 吴然平 吴然霞 于 2019-10-19 设计创作，主要内容包括：本发明公开了一种自动吸塑机,涉及吸塑设备领域。其技术要点是：一种自动吸塑机,包括吸塑机本体,吸塑机本体的一侧设置有吸气罩,吸气罩远离吸塑机本体的一侧连接有吸气管,吸气管远离吸气罩的一侧设置有废气处理箱,废气处理箱远离吸气管的一端设有吸风机；废气处理箱的上方和下方分别设置有主收卷辊和副收卷辊,主收卷辊的周侧缠绕有活性炭布,活性炭布的另一端与副收卷辊固定连接,活性炭布贯穿废气处理箱,废气处理箱的顶端和底端均开设有与活性炭布配合的活动孔,主收卷辊和副收卷辊的一端分别设置有驱动其转动的主驱动件和副驱动件,主收卷辊和副收卷辊的周围设置有保护罩。本发明具有去除有机废气、减少污染的优点。(The invention discloses an automatic plastic sucking machine, and relates to the field of plastic sucking equipment. The technical key points are as follows: an automatic plastic sucking machine comprises a plastic sucking machine body, wherein one side of the plastic sucking machine body is provided with an air suction cover, one side of the air suction cover, which is far away from the plastic sucking machine body, is connected with an air suction pipe, one side of the air suction pipe, which is far away from the air suction cover, is provided with a waste gas treatment box, and one end of the waste gas treatment box, which is far away from the air suction pipe, is provided with a suction; the top and the below of exhaust-gas treatment case are provided with main wind-up roll and vice wind-up roll respectively, the week side winding of main wind-up roll has activated carbon cloth, activated carbon cloth's the other end and vice wind-up roll fixed connection, activated carbon cloth runs through the exhaust-gas treatment case, the top and the bottom of exhaust-gas treatment case all seted up with activated carbon cloth complex movable orifice, the one end of main wind-up roll and vice wind-up roll is provided with its pivoted main driving piece of drive and vice driving piece respectively, be provided with the safety cover around main wind-up roll and the vice wind-up roll. The invention has the advantages of removing organic waste gas and reducing pollution.)

1. An automatic plastic sucking machine comprises a plastic sucking machine body (1) and is characterized in that one side of the plastic sucking machine body (1) is provided with an air suction cover (2), one side, far away from the plastic sucking machine body (1), of the air suction cover (2) is connected with an air suction pipe (3), one side, far away from the air suction cover (2), of the air suction pipe (3) is provided with a waste gas treatment box (4), and one end, far away from the air suction pipe (3), of the waste gas treatment box (4) is provided with a suction fan (5);

the top and the below of exhaust-gas treatment case (4) are provided with main wind-up roll (6) and vice wind-up roll (7) respectively, the week side winding of main wind-up roll (6) has activated carbon cloth (8), the other end and vice wind-up roll (7) fixed connection of activated carbon cloth (8), activated carbon cloth (8) run through exhaust-gas treatment case (4), the top and the bottom of exhaust-gas treatment case (4) all seted up with activated carbon cloth (8) complex activity hole (9), the one end of main wind-up roll (6) and vice wind-up roll (7) is provided with its pivoted of drive main driving piece (10) and vice driving piece (11) respectively, be provided with safety cover (12) around main wind-up roll (6) and vice wind-up roll (7).

2. The automatic plastic uptake machine according to claim 1, characterized in that an organic gas detector (13) is arranged inside the waste gas treatment box (4) on the side of the activated carbon cloth (8) away from the air intake pipe (3), a controller (14) electrically connected with the organic gas detector (13) is arranged on the waste gas treatment box (4), and the controller (14) is electrically connected with the main driving part (10) and the auxiliary driving part (11).

3. The automatic vacuum molding machine according to claim 1, characterized in that a set of guide rolls (15) is provided above and below the waste gas treatment tank (4), and the activated carbon cloth (8) is located between the two guide rolls (15).

4. The automatic vacuum molding machine according to claim 1, characterized in that a cloth releasing roll (16) and a cloth collecting roll (17) are respectively arranged above and below the waste gas treatment tank (4), the cloth releasing roller (16) and the cloth collecting roller (17) are positioned between the air suction pipe (3) and the activated carbon cloth (8), the periphery of the cloth releasing roller (16) is wound with a dust removing cloth (18), the other end of the dust removing cloth (18) is fixedly connected with a cloth collecting roller (17), the dust removing cloth (18) penetrates through the waste gas treatment box (4), the top end and the bottom end of the waste gas treatment box (4) are both provided with sliding holes (19) matched with the dust removing cloth (18), one end of the cloth releasing roller (16) and one end of the cloth collecting roller (17) are respectively provided with a cloth releasing motor (20) and a cloth collecting motor (28) which drive the cloth releasing roller and the cloth collecting roller to rotate, dust covers (21) are arranged around the cloth releasing roller (16) and the cloth collecting roller (17).

5. The automatic vacuum molding machine according to claim 4, characterized in that a beating assembly for beating the dust cloth (18) is provided between the cloth take-up roll (17) and the exhaust gas treatment tank (4).

6. The automatic plastic uptake machine of claim 5, characterized in that, the subassembly of patting includes patting motor (22), dwang (23) and a plurality of patting pole (24), patting pole (24) level setting and with the laminating of dust removal cloth (18), a plurality of the one end of patting pole (24) is connected with dwang (23), dwang (23) set up along the direction of motion of dust removal cloth (18), the one end of dwang (23) is connected with the pivot transmission of patting motor (22).

7. The automatic vacuum molding machine according to claim 6, characterized in that the beating rod (24) is provided with a plurality of protrusions (25) on the side facing the dusting cloth (18).

8. The automatic plastic uptake machine according to claim 6, characterized in that the bottom wall of the dust cover (21) around the cloth collecting roller (17) is inverted-splayed in vertical section, the lowest end of the bottom wall of the dust cover (21) is communicated with a dust falling pipe (26), and the lower end of the dust falling pipe (26) is detachably connected with a dust collecting hopper (27).

Technical Field

The invention relates to the field of plastic suction equipment, in particular to an automatic plastic suction machine.

Background

The plastic uptake is a plastic processing technology, and the main principle is that after a flat plastic hard sheet is heated and softened, the plastic hard sheet is absorbed on the surface of a mould in vacuum, and the plastic hard sheet is formed after cooling, so that the plastic hard sheet is widely used in the industries of plastic packaging, lamp decoration, advertisement, decoration and the like. The plastic sucking machine is also called a thermoplastic forming machine, and is a machine for sucking and manufacturing thermoplastic plastic coiled materials such as PVC, PE, PP, PET, HIPS and the like which are plasticized by heating into high-grade products such as packing decorative boxes, frames and the like with various shapes. The thermoplastic plastic sheets such as PVC, PET and the like which are heated and softened are subjected to vacuum forming by a mould into vacuum covers, plastic trays, bubble shells and the like with various shapes by utilizing vacuum suction force generated by a vacuum pump.

The Chinese patent with the publication number of CN104875364B discloses a plastic suction forming machine, which comprises a frame, an upper die, a lower die, a heating system and a control device, wherein the upper die is a movable die, the upper die can be driven by a lifting device to form buckling seal with the lower die, the cavity wall of the upper die is a honeycomb-shaped flow channel, the honeycomb flow channel is composed of a plurality of outer convex groove body plates which are vertically arranged, the outer convex groove body plate is composed of a plurality of polygonal outer convex groove bodies, the oblique line edge of the adjacent outer convex groove bodies forms a separation flow channel, the intervals among the plurality of outer convex groove body plates form a crisscross air flow channel, the heating system forms heat conduction on the cavity wall of the upper die to heat the upper end surface of a workpiece to be processed in the die, the lower die is a positioning die, the cavity wall of the lower die is of a hollow structure, and the inner cavity wall of the lower die is provided with a plurality of through, the heating system heats the lower end face of the workpiece to be processed in the mold by heat conduction formed by the cavity wall of the lower mold, and a vacuum suction device can generate vacuum suction on the lower end face of the workpiece to be processed through a plurality of through holes formed in the lower mold.

The prior art solutions in the above patents have the following drawbacks: when the above patent is used for heating plastics, a large amount of organic waste gas is generated, and the organic waste gas has peculiar smell and certain toxicity. Because the production workshop is a semi-closed space, the whole workshop can be filled with waste gas generated in the production process of the plastic suction machine, so that the quality of air in the workshop is reduced; if workers inhale the waste gas for a long time, the health of the workers is affected; if these exhaust gases are discharged directly to the outside of the workplace, outdoor air pollution is easily caused.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an automatic plastic sucking machine which has the advantages of effectively removing organic waste gas and reducing pollution.

The above object of the present invention is achieved by the following technical solutions:

an automatic plastic sucking machine comprises a plastic sucking machine body, wherein one side of the plastic sucking machine body is provided with an air suction cover, one side of the air suction cover, which is far away from the plastic sucking machine body, is connected with an air suction pipe, one side of the air suction pipe, which is far away from the air suction cover, is provided with a waste gas treatment box, and one end of the waste gas treatment box, which is far away from the air suction pipe, is provided with a suction fan;

the top and the below of exhaust-gas treatment case are provided with main wind-up roll and vice wind-up roll respectively, the week side winding of main wind-up roll has activated carbon cloth, activated carbon cloth's the other end and vice wind-up roll fixed connection, activated carbon cloth runs through the exhaust-gas treatment case, the top and the bottom of exhaust-gas treatment case all seted up with activated carbon cloth complex movable orifice, the one end of main wind-up roll and vice wind-up roll is provided with its pivoted main driving piece of drive and vice driving piece respectively, be provided with the safety cover around main wind-up roll and the vice wind-up roll.

By adopting the technical scheme, when the plastic suction forming work is carried out, the suction fan sucks organic waste gas through the suction cover, the organic waste gas enters the waste gas treatment box from the suction pipe, the organic waste gas is adsorbed by the activated carbon when passing through the activated carbon cloth, and the purified air is discharged out of the waste gas treatment box, so that the organic waste gas can be effectively removed, the pollution can be reduced, and the negative influence on the health of workers is reduced; when the activated carbon cloth in the waste gas treatment box is saturated, the main driving piece and the auxiliary driving piece rotate, and the activated carbon cloth saturated in adsorption is wound on the auxiliary winding roller, so that the activated carbon cloth is automatically replaced, the frequency of manual replacement is reduced, and the continuous production of the automatic plastic uptake machine is not influenced.

The invention is further configured to: the waste gas treatment box is characterized in that an organic gas detector is arranged on one side, away from the air suction pipe, of the activated carbon cloth inside the waste gas treatment box, a controller electrically connected with the organic gas detector is arranged on the waste gas treatment box, and the controller is electrically connected with the main driving piece and the auxiliary driving piece.

Through adopting above-mentioned technical scheme, the waste gas after the organic gas detector can on-line monitoring adsorbs through activated carbon cloth, and when the organic matter content in the waste gas exceeded the standard, it states that the activated carbon cloth in the exhaust-gas treatment incasement reaches the state of absorption saturation, and at this moment, the organic gas detector with signal transmission to controller, controller control main drive spare and auxiliary drive spare accomplish the automatic change of activated carbon cloth to change activated carbon cloth more in time, guarantee waste gas adsorption effect, reduce the pollution.

The invention is further configured to: a group of guide rollers is arranged above and below the waste gas treatment box respectively, and the activated carbon cloth is positioned between the two guide rollers.

Through adopting above-mentioned technical scheme, because activated carbon cloth can shift to vice wind-up roll from main wind-up roll, the guide roll can play the guide effect, guarantees activated carbon cloth normal motion.

The invention is further configured to: the waste gas treatment box is characterized in that a cloth releasing roller and a cloth collecting roller are arranged above and below the waste gas treatment box respectively, the cloth releasing roller and the cloth collecting roller are located between an air suction pipe and activated carbon cloth, dust removing cloth is wound on the periphery of the cloth releasing roller, the other end of the dust removing cloth is fixedly connected with the cloth collecting roller, the dust removing cloth penetrates through the waste gas treatment box, sliding holes matched with the dust removing cloth are formed in the top end and the bottom end of the waste gas treatment box, a cloth releasing motor and a cloth collecting motor which drive the cloth releasing roller to rotate are arranged at one end of the cloth releasing roller and the cloth collecting roller respectively, and dust covers are arranged on the periphery of the cloth releasing roller and the cloth collecting roller.

By adopting the technical scheme, the waste gas not only contains peculiar smell and toxic gas, but also contains tiny particles or dust. Dust is adsorbed on the dust removal cloth when passing through the dust removal cloth, so that the dust is prevented from being adsorbed on the activated carbon cloth to influence the adsorption capacity and regeneration of the activated carbon cloth; when dust on the dust removal cloth is more, put cloth motor and receive cloth motor and drive the dust removal cloth and rotate to accomplish the automatic change of dust removal cloth, guarantee dust removal and exhaust-gas treatment's effect, reduce the frequency of artifical change.

The invention is further configured to: a beating component for beating the dust removing cloth is arranged between the cloth collecting roller and the waste gas treatment box.

Through adopting above-mentioned technical scheme, because the dust only adsorbs on the surface of dust removal cloth, thereby dust removal cloth is patted through machinery easily and is realized the deashing, when dust removal cloth all shifts to on receiving the cloth roller, can also reverse once more and remove dust, further reduces the frequency of changing dust removal cloth.

The invention is further configured to: pat the subassembly including patting motor, dwang and a plurality of pole of patting, pat the pole level setting and with the laminating of dust removal cloth, it is a plurality of the one end of patting the pole is connected with the dwang, the direction of motion setting of dust removal cloth is followed to the dwang, the one end of dwang is connected with the pivot transmission of patting the motor.

Through adopting above-mentioned technical scheme, adsorb dust removal cloth behind the dust when the downstream, pat the motor and pass through the dwang and drive and pat the pole and pat dust removal cloth to make the dust break away from dust removal cloth, be favorable to the recycling of dust removal cloth.

The invention is further configured to: one side of the flapping rod facing the dust removing cloth is provided with a plurality of bulges.

Through adopting above-mentioned technical scheme, pat the pole when patting the dust removal cloth, the arch makes the dust removal cloth take place slight deformation, is favorable to the dust to break away from the dust removal cloth.

The invention is further configured to: lie in the vertical cross-section of dust cover diapire around the receipts cloth roller is the splayed that falls, the diapire least significant end intercommunication of dust cover has the ash falling pipe, the lower extreme of ash falling pipe can be dismantled and be connected with the ash collecting bucket.

Through adopting above-mentioned technical scheme, the dust that breaks away from dust removal cloth freely falls behind, along the dust cover diapire landing of splayed to the dust collecting hopper in, when the dust collection in the dust collecting hopper was full, pull down the deashing.

In conclusion, the beneficial technical effects of the invention are as follows:

(1) by arranging the waste gas treatment box, when the plastic suction molding works, the generated organic waste gas enters the waste gas treatment box from the air suction pipe, is adsorbed by the activated carbon when passing through the activated carbon cloth, and the purified air is discharged out of the waste gas treatment box, so that the organic waste gas can be effectively removed, the pollution can be reduced, and the negative influence on the health of workers is reduced; when the activated carbon cloth in the waste gas treatment box is saturated, the main driving piece and the auxiliary driving piece rotate, and the activated carbon cloth saturated in adsorption is wound on the auxiliary winding roller, so that the activated carbon cloth is automatically replaced, the frequency of manual replacement is reduced, and the continuous production of the automatic plastic uptake machine is not influenced.

(2) Through setting up organic gas detector and controller, the waste gas after the organic gas detector can on-line monitoring adsorbs through activated carbon cloth, organic matter content in the waste gas exceedes the standard, explains that the activated carbon cloth in the exhaust-gas treatment incasement reaches the state of adsorbing saturation, at this moment, organic gas detector is with signal transmission to controller, the automatic change of activated carbon cloth is accomplished to main drive spare and accessory drive spare of controller control to change activated carbon cloth more in time, guarantee waste gas adsorption effect, reduce the pollution.

(3) By arranging the dust removing cloth, the cloth releasing roller and the cloth collecting roller, dust is adsorbed on the dust removing cloth when passing through the dust removing cloth, so that the dust is prevented from being adsorbed on the activated carbon cloth to influence the adsorption capacity and regeneration of the activated carbon cloth; when dust on the dust removal cloth is more, put cloth motor and receive cloth motor and drive the dust removal cloth and rotate to accomplish the automatic change of dust removal cloth, guarantee dust removal and exhaust-gas treatment's effect, reduce the frequency of artifical change.

Drawings

FIG. 1 is a schematic view of the construction of an automatic vacuum molding machine;

FIG. 2 is a cross-sectional view of an automatic suction molding machine;

FIG. 3 is a cross-sectional view of the main wind-up roll and protective cover;

FIG. 4 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 5 is a cross-sectional view of a cloth take-up roll, beater assembly and hopper;

fig. 6 is a perspective view of the tapping assembly.

Reference numerals: 1. a plastic uptake machine body; 2. an air intake cover; 3. an air intake duct; 4. a waste gas treatment tank; 5. a suction fan; 6. a main wind-up roll; 7. a secondary wind-up roll; 8. activated carbon cloth; 9. a movable hole; 10. a primary drive member; 11. a secondary drive member; 12. a protective cover; 13. an organic gas detector; 14. a controller; 15. a guide roller; 16. a cloth releasing roller; 17. a cloth collecting roller; 18. dedusting cloth; 19. a slide hole; 20. a cloth releasing motor; 21. a dust cover; 22. beating a motor; 23. rotating the rod; 24. beating the rod; 25. a protrusion; 26. a dust falling pipe; 27. a dust collecting hopper; 28. receive cloth motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, an automatic vacuum molding machine disclosed by the invention comprises a vacuum molding machine body 1, wherein an air suction cover 2 is arranged on one side of the vacuum molding machine body 1, an air suction pipe 3 is connected to one side of the air suction cover 2, which is far away from the vacuum molding machine body 1, a waste gas treatment box 4 is connected to one side of the air suction pipe 3, which is far away from the air suction cover 2, and a suction fan 5 is arranged at one end of the waste gas treatment box 4, which is far away from the air suction pipe 3.

Referring to fig. 2 and 3, in order to purify organic waste gas, a main winding roller 6 and an auxiliary winding roller 7 are respectively arranged above and below the waste gas treatment tank 4, a protective cover 12 is arranged around the main winding roller 6 and the auxiliary winding roller 7, the protective cover 12 is hermetically and fixedly connected with the waste gas treatment tank 4, and two ends of the main winding roller 6 and the auxiliary winding roller 7 are rotatably connected with the protective cover 12. The winding of week side of main wind-up roll 6 has activated carbon cloth 8, activated carbon cloth 8's the other end and the 7 fixed connection of vice wind-up roll, activated carbon cloth 8 runs through exhaust-gas treatment case 4, exhaust-gas treatment case 4's top and bottom all seted up with 8 complex activity holes 9 of activated carbon cloth, activated carbon cloth 8 closely laminates with the inner wall of activity hole 9, owing to there is the sealing of safety cover 12, even there is a small amount of waste gas to leak from activity holes 9, also including being wrapped up by safety cover 12, can not leak to the workshop in. One end of the main winding roller 6 and one end of the sub winding roller 7 are respectively provided with a main driving piece 10 and a sub driving piece 11 (see fig. 1) for driving the main winding roller and the sub winding roller to rotate, and both the main driving piece 10 and the sub driving piece 11 can adopt motors.

After the suction fan 5 is started, organic waste gas enters the waste gas treatment box 4 from the suction cover 2 through the suction pipe 3, organic substances are adsorbed by activated carbon, and purified air is discharged out of the waste gas treatment box 4, so that pollution is reduced, and negative effects on the health of workers are reduced. When the activated carbon cloth 8 in the waste gas treatment box 4 is saturated in adsorption, the main driving part 10 and the auxiliary driving part 11 rotate, and the activated carbon cloth 8 saturated in adsorption is wound on the auxiliary winding roller 7, so that the activated carbon cloth 8 is automatically replaced, the frequency of manual replacement is reduced, and the continuous production of the automatic plastic uptake machine is not influenced.

In order to replace the activated carbon cloth 8 in time, an organic gas detector 13 is fixedly connected to one side, away from the air suction pipe 3, of the activated carbon cloth 8 inside the exhaust gas treatment box 4, a probe of the organic gas detector 13 extends into the exhaust gas treatment box 4, a controller 14 electrically connected with the organic gas detector 13 is connected to the exhaust gas treatment box 4, the controller 14 can be a PLC (programmable logic controller), and the controller 14 is electrically connected with the main driving part 10 and the auxiliary driving part 11. The organic gas detector 13 can monitor the exhaust gas adsorbed by the activated carbon cloth 8 on line, when the content of organic matters in the exhaust gas exceeds the standard, it indicates that the activated carbon cloth 8 in the exhaust gas treatment box 4 reaches the state of adsorption saturation, at this time, the organic gas detector 13 transmits a signal to the controller 14, and the controller 14 controls the main driving part 10 and the auxiliary driving part 11 to complete the automatic replacement of the activated carbon cloth 8, so that the exhaust gas adsorption effect is ensured, and the pollution is reduced.

Referring to fig. 3, a set of guide rollers 15 is respectively arranged above and below the waste gas treatment tank 4, two ends of each guide roller 15 are rotatably connected with the protective cover 12, and the activated carbon cloth 8 is positioned between the two guide rollers 15. Because activated carbon cloth 8 can be followed main wind-up roll 6 and shifted to vice wind-up roll 7, guide roll 15 can play the guide effect, guarantees activated carbon cloth 8 normal motion.

Referring to fig. 2 and 4, since the exhaust gas contains not only odor and toxic gas but also fine particles or dust. Therefore, the cloth releasing roller 16 and the cloth collecting roller 17 are respectively arranged above and below the waste gas treatment box 4, dust covers 21 are arranged around the cloth releasing roller 16 and the cloth collecting roller 17, the dust covers 21 are hermetically and fixedly connected with the waste gas treatment box 4, and two ends of the cloth releasing roller 16 and two ends of the cloth collecting roller 17 are rotatably connected with the dust covers 21. Put cloth roller 16 and cloth receiving roller 17 and be located between breathing pipe 3 and the active carbon cloth 8, the week side winding of putting cloth roller 16 has dust removal cloth 18, the other end and the cloth receiving roller 17 fixed connection of dust removal cloth 18, dust removal cloth 18 runs through exhaust-gas treatment case 4, exhaust-gas treatment case 4's top and bottom all seted up with dust removal cloth 18 complex sliding hole 19, put cloth roller 16 and cloth receiving roller 17's one end and be provided with its pivoted of drive respectively and put cloth motor 20 and receive cloth motor 28. When passing through the dust removing cloth 18, dust is adsorbed on the dust removing cloth 18, so that the dust is prevented from being adsorbed on the activated carbon cloth 8 to influence the adsorption capacity and regeneration of the activated carbon cloth 8; when the dust on the dust removing cloth 18 is more, the cloth placing motor 20 and the cloth collecting motor 28 drive the dust removing cloth 18 to rotate, so that the automatic replacement of the dust removing cloth 18 is completed, the dust removing and waste gas treatment effects are ensured, and the manual replacement frequency is reduced. Guide rollers 15 for guiding the dust removing cloth 18 are further provided above and below the exhaust gas treatment tank 4.

Referring to fig. 5 and 6, since the dust is only adsorbed on the surface of the dust removing cloth 18, the dust removing cloth 18 is easy to perform ash removal by mechanical beating, and therefore a beating assembly for beating the dust removing cloth 18 is arranged between the cloth collecting roller 17 and the exhaust gas treatment box 4. The beating component comprises a beating motor 22, a rotating rod 23 and a plurality of beating rods 24, wherein the beating rods 24 are horizontally arranged and attached to the dust removing cloth 18, one ends of the beating rods 24 are perpendicular to the rotating rod 23 and are fixedly connected with the rotating rod 23, the rotating rod 23 is arranged along the motion direction of the dust removing cloth 18, one end of the rotating rod 23 is connected with the rotating shaft of the beating motor 22 in a transmission mode, and in the embodiment, one end of the rotating rod 23 is connected with the rotating shaft of the beating motor 22 through a reduction gearbox. The side of the beating rod 24 facing the dust removing cloth 18 is provided with a plurality of protrusions 25, and when the beating rod 24 beats the dust removing cloth 18, the protrusions 25 enable the dust removing cloth 18 to slightly deform, so that dust can be separated from the dust removing cloth 18.

When the dust removing cloth 18 adsorbing dust moves downwards, the beating motor 22 drives the beating rod 24 to beat the dust removing cloth 18 through the rotating rod 23, so that the dust is separated from the dust removing cloth 18, and the recycling of the dust removing cloth 18 is facilitated.

The vertical section of the bottom wall of the dust cover 21 around the cloth collecting roller 17 is inverted-splayed, the lowest end of the bottom wall of the dust cover 21 is communicated with a dust falling pipe 26, the lower end of the dust falling pipe 26 is in threaded connection with a dust collecting hopper 27, the shape of the dust collecting hopper 27 is the same as that of a conical bottle, and dust can be prevented from being raised. After the dust separated from the dust removing cloth 18 falls freely, the dust falls into the dust collecting hopper 27 along the bottom wall of the splayed dust cover 21, and when the dust in the dust collecting hopper 27 is fully collected, the dust is removed.

The implementation principle of the embodiment is as follows: after the suction fan 5 is started, organic waste gas enters the waste gas treatment box 4 from the suction hood 2 through the suction pipe 3, dust is adsorbed on the dust removing cloth 18 when passing through the dust removing cloth 18, and the dust is prevented from being adsorbed on the activated carbon cloth 8 to influence the adsorption capacity and regeneration of the activated carbon cloth 8; when the dust on the dust removing cloth 18 is more, the cloth placing motor 20 and the cloth collecting motor 28 drive the dust removing cloth 18 to rotate, so that the dust removing cloth 18 is automatically replaced, and the dust removing and waste gas treating effects are ensured. Organic substances in the waste gas are adsorbed by the activated carbon, and the purified air is discharged out of the waste gas treatment box 4, so that the pollution is reduced, and the negative influence on the health of workers is reduced.

The organic gas detector 13 can monitor the exhaust gas adsorbed by the activated carbon cloth 8 on line, when the content of organic matters in the exhaust gas exceeds the standard, it indicates that the activated carbon cloth 8 in the exhaust gas treatment box 4 reaches the state of adsorption saturation, at this time, the organic gas detector 13 transmits a signal to the controller 14, and the controller 14 controls the main driving part 10 and the auxiliary driving part 11 to complete the automatic replacement of the activated carbon cloth 8, so that the activated carbon cloth 8 is replaced more timely, the exhaust gas adsorption effect is ensured, and the pollution is reduced.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.