Flue gas purification device for horizontal drawing machine of BOPP (biaxially-oriented polypropylene) film production line

Abstract

The utility model relates to the field of flue gas purification, and discloses a BOPP film production line horizontal drawing machine flue gas purification device which comprises a purification tank, an air inlet is fixedly connected to the lower portion of the outer side of the purification tank, two filling layers are arranged in the purification tank, a circulation assembly is arranged on the outer side of the purification tank, and a scraper assembly is arranged in the purification tank. A cleaning assembly is arranged on the outer side of the purification tank scraper assembly, the scraper assembly comprises a triangular support, the outer side of the triangular support is fixedly connected to the top of the purification tank, a motor is fixedly connected to the outer side of the triangular support, and a rotating shaft is fixedly connected to the output end of the motor. According to the utility model, the driving motor drives the rotating shaft to rotate, and the rotating shaft rotates to further drive the stirring rod and the scraper blade to rotate, so that particles and volatile organic compounds on the inner wall are scraped off, the flue gas purification efficiency is improved, the adhesion of the inner wall of the lower part of the purification tank is reduced, the service life of equipment is prolonged, and the interior of the purification tank is ensured to be clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flue gas purification, especially relates to a BOPP film production line transverse pulling machine flue gas purification device. BACKGROUND

[0002] The BOPP film production line transverse pulling machine, also known as a transverse stretching machine, is used for producing biaxially oriented polypropylene film. It uniformly stretches the film in the transverse direction by precisely controlling temperature and speed, thereby improving the optical performance and mechanical strength of the film. The device is usually integrated with an automatic control system to ensure efficient and stable production process, and is suitable for food, packaging and other industries.

[0003] In the existing BOPP film production technology, the flue gas generated in the transverse pulling process contains certain pollutants. When these flue gases enter the purification tank, they do not fully react with the scrubbing liquid in the bottom filler layer, and a portion of the flue gas directly rises and adheres to the lower part of the filler layer on the inner wall of the purification tank, resulting in reduced purification efficiency, incomplete removal of pollutants, and ultimately affecting the effectiveness of the entire flue gas purification process, increasing the risk of environmental pollution.

[0004] To solve the above problems, a BOPP film production line transverse pulling machine flue gas purification device is proposed. SUMMARY

[0005] To overcome the above shortcomings, the utility model provides a kind of BOPP film production line transverse pulling machine flue gas purification device, to improve the existing technology in these flue gases enter the purification tank, since it is not fully reacted with the scrubbing liquid in the bottom filler layer, a portion of the flue gas directly rises and adheres to the lower part of the filler layer on the inner wall of the purification tank, resulting in reduced purification efficiency, incomplete removal of pollutants, and ultimately affecting the effectiveness of the entire flue gas purification process, increasing the risk of environmental pollution problem.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of BOPP film production line transverse pulling machine flue gas purification device, including purification tank, the lower part of the purification tank outside is fixedly connected with inlet, the inside of the purification tank is provided with two filler layers, the outside of the purification tank is provided with circulating assembly, the inside of the purification tank is provided with scraper assembly, the outside of the scraper assembly of the purification tank is provided with cleaning assembly;

[0007] The scraper assembly includes a triangular support, the triangular support is fixedly connected to the top of the purification tank, the triangular support is fixedly connected with a motor outside, the motor output end is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with a plurality of stirring rods outside, the stirring rod is slidably connected with a slide rod inside, the slide rod is sleeved with a spring outside, and the slide rod is fixedly connected with a scraper outside.

[0008] As a further description of the above technical scheme:

[0009] The cleaning assembly comprises a plurality of cleaning brushes fixedly connected inside the rotating shaft outside.

[0010] As a further description of the above technical solution:

[0011] The circulating assembly comprises a circulating water tank, a conveying pipe fixedly connected outside the circulating water tank, a conveying pump I arranged outside the lower part of the conveying pipe, an electromagnetic valve I arranged outside the lower part of the conveying pipe, two joints fixedly connected outside the conveying pipe, an input pipe fixedly connected outside the circulating water tank, an input pump arranged outside the input pipe, and an electromagnetic valve II arranged outside the input pipe.

[0012] As a further description of the above technical solution:

[0013] The bottom end of the rotating shaft is rotationally connected to the inner bottom wall of the purification tank, and the outer side of the purification tank is rotationally connected to the inside of the filling layer.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the purification tank is fixedly connected with a demisting grid at the top, and the outer side of the rotating shaft is rotationally connected to the inside of the demisting grid.

[0016] As a further description of the above technical solution:

[0017] The outer side of the joint is fixedly connected with a plurality of atomizing nozzles.

[0018] As a further description of the above technical solution:

[0019] The scraper is in abutment with the inner wall of the purification tank, one end of the spring is fixedly connected to the outer side of the scraper, and the other end of the spring is fixedly connected to the outer side of the stirring rod.

[0020] As a further description of the above technical solution:

[0021] The input pipe is fixedly connected to the lower part of the outer side of the purification tank away from the circulating water tank.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1、The utility model discloses a rotating shaft is rotated to stirring rod and scraper are rotated in turn, realize the particle on the inner wall and volatile organic compound are scraped off, improve the flue gas purification efficiency, reduce the adhesion of the lower inner wall of the purification tank, prolong the service life of equipment, ensure the internal cleanliness of the purification tank.

[0024] 2. In the utility model, the driving motor drives the rotating shaft to rotate, and then drives the cleaning brush to rotate, cleaning the blocked residues on the top and bottom of the filling layer, realizing the function of automatic cleaning of the filling layer, effectively removing the residues and blockages on the filling layer, ensuring the normal operation of the purification device, and also extending the service life of the filling material and reducing the maintenance frequency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional diagram of a fume purification device for a horizontal stretching machine of a BOPP film production line proposed by the present invention;

[0026] Figure 2 This is a structural schematic diagram of a stirring rod of a fume purification device for a horizontal stretching machine of a BOPP film production line proposed by the utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a structural schematic diagram of an atomizing nozzle of a fume purification device for a horizontal stretching machine of a BOPP film production line proposed by the utility model;

[0029] Figure 5 This is a structural schematic diagram of a cleaning brush for a fume purification device of a horizontal stretching machine of a BOPP film production line proposed by the utility model.

[0030] Legend:

[0031] 1. Purification tank; 2. Air inlet; 3. Triangular bracket; 4. Motor; 5. Delivery pipe; 6. Solenoid valve 1; 7. Delivery pump 1; 8. Circulating water tank; 9. Input pipe; 10. Solenoid valve 2; 11. Delivery pump; 12. Rotating shaft; 13. Demisting grille; 14. Cleaning brush; 15. Connector; 16. Filling layer; 17. Stirring rod; 18. Scraper; 19. Sliding rod; 20. Spring; 21. Atomizing nozzle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1 - Figure 5The utility model provides a kind of BOPP film production line transverse pull machine flue gas purification device, including purification tank 1, the lower part of purification tank 1 outside is fixedly connected with air inlet 2, two filling layers 16 are provided in purification tank 1, circulation assembly is provided in the outside of purification tank 1, scraper assembly is provided in the inside of purification tank 1, cleaning assembly is provided in the outside of the scraper assembly of purification tank 1;

[0034] Scraper assembly includes triangular support 3, triangular support 3 is fixedly connected in the top of purification tank 1 outside, motor 4 is fixedly connected in the outside of triangular support 3, motor 4 output end is fixedly connected with rotating shaft 12, rotating shaft 12 outside is fixedly connected with multiple stirring rods 17, stirring rod 17 inside is slidably connected with slide rod 19, spring 20 is sleeved in the outside of slide rod 19, slide rod 19 outside is fixedly connected with scraper 18.

[0035] Specifically, air inlet 2 is for flue gas from air inlet 2 into purification tank 1, filling layer is used for further purifying flue gas, by filling layer 16 and washing liquid fully react, remove harmful substances in flue gas, circulation assembly is used for recycling washing liquid, ensure the sustained purification capacity of washing liquid, improve purification efficiency, scraper assembly is used for removing the particulate matter and volatile organic compounds and other pollutants adhered on the inner wall of purification tank 1 and filling layer 16, avoid blockage, prolong the service life of equipment, cleaning assembly is used for cleaning the residue of filling layer 16, triangular support 3 is used as support structure, fixed motor 4 and rotating shaft 12, ensure the stability and reliability of the whole assembly, motor 4 provides power, rotating shaft 12 is rotated by output end, rotating shaft 12 is used for connecting motor 4 and stirring rod 17, power transmission, make it rotate, stirring rod 17 is used for rotating with rotating shaft 12, on the one hand promote the mixing of flue gas and washing liquid, on the other hand drive scraper 18 to rotate, slide rod 19 is slid in the inside of stirring rod 17, ensure that scraper 18 is always in contact with the inner wall of purification tank 1, spring 20 is sleeved in the outside of slide rod 19, provide certain elasticity, ensure that scraper 18 is closely attached to the inner wall of purification tank 1, even if scraper 18 abrasion can also keep good contact, scraper 18 is fixedly connected in the outside of slide rod 19, rotate with stirring rod 17, scrape the particulate matter and volatile organic compounds and other pollutants on the inner wall of purification tank 1, prevent adhesion and blockage.

[0036] Refer to Figure 1 Figure 3 Cleaning assembly includes multiple cleaning brushes 14, cleaning brush 14 is fixedly connected in the outside of rotating shaft 12 inside, circulation assembly includes circulating water tank 8, circulating water tank 8 outside is fixedly connected with delivery pipe 5, delivery pipe 5 outside lower part is provided with delivery pump one 7, delivery pipe 5 outside lower part is provided with electromagnetic valve one 6, delivery pipe 5 outside is fixedly connected with two joints 15, circulating water tank 8 outside is fixedly connected with input pipe 9, input pipe 9 outside is provided with input pump 11, input pipe 9 outside is provided with electromagnetic valve two 10. ​

[0037] Specifically, the cleaning brush 14 is used for cleaning 16 to avoid its blockage, the circulating water tank 8 is used for storing and recycling the washing liquid, ensuring the continuous purification ability of the washing liquid, the delivery pipe 5 connects the circulating water tank 8 and the purification tank 1, and is used for delivering the washing liquid, the delivery pump 7 is used for driving the washing liquid to flow through the delivery pipe 5, the electromagnetic valve 6 controls the flow of the washing liquid, ensuring that the washing liquid is delivered on demand, the joint 15 is used for connecting the atomizing nozzle 21, so that the washing liquid is atomized and sprayed into the purification tank 1, and the input pipe 9 is used for inputting the washing liquid on the bottom wall of the purification tank 1 into the inside of the circulating water tank 8 for treatment and reuse, and the input pump 11 is used for pumping the washing liquid on the bottom wall of the purification tank 1 into the circulating water tank 8, and the electromagnetic valve 2 controls the inflow of the washing liquid on the bottom wall of the purification tank 1

[0038] Referring to Figure 1 Figure 5 The bottom end of the rotating shaft 12 is rotatably connected to the bottom wall of the purification tank 1, the outer side of the purification tank 1 is rotatably connected to the inside of the filling layer 16, the top of the inner wall of the purification tank 1 is fixedly connected with the demisting grid 13, the outer side of the rotating shaft 12 is rotatably connected to the inside of the demisting grid 13, the outer side of the joint 15 is fixedly connected with a plurality of atomizing nozzles 21, the scraper 18 abuts against the inner wall of the purification tank 1, one end of the spring 20 is fixedly connected to the outer side of the scraper 18, and the other end of the spring 20 is fixedly connected to the outer side of the stirring rod 17. The end of the input pipe 9 away from the circulating water tank 8 is fixedly connected to the outer side of the lower part of the purification tank 1.

[0039] Specifically, the bottom end of the rotating shaft 12 is rotatably connected to the bottom wall of the purification tank 1, and the top end penetrates through the filling layer 16 and the demisting grid 13, so as to drive the stirring rod 17 and the scraper 18 to rotate, the filling layer 16 is used for further purifying the flue gas and preventing the rapid upward movement of the flue gas, the harmful substances in the flue gas are removed through the full reaction of the flue gas with the washing liquid, the demisting grid 13 is used for removing the water and small particles in the purified flue gas, improving the purification effect, the atomizing nozzle 21 is connected to the delivery pipe 5 through the joint 15, the washing liquid is atomized and sprayed into the purification tank 1, the contact area between the washing liquid and the flue gas is increased, and the purification effect is enhanced, the scraper 18 is always in contact with the inner wall of the purification tank 1 under the action of the spring 20, and the residues on the inner wall are scraped off, the spring 20 provides the elastic force, ensuring the good contact between the scraper 18 and the inner wall of the purification tank 1, and the input pipe 9 is used for delivering the washing liquid on the bottom wall of the purification tank 1, ensuring the continuous supply of the washing liquid.

[0040] ​Working principle: in use, through the drive delivery pump 7, the washing liquid is sprayed out from the circulating water tank 8 through the delivery pipe 5, the joint 15 and the atomizing nozzle 21, at this time, the flue gas enters from the air inlet 2, at this time, the driving motor 4 drives the rotating shaft 12 to rotate, and then drives the cleaning brush 14 to rotate, and the cleaning of the residual blockage on the top and bottom of the filling layer 16 is carried out, the use time of the filler is prolonged, the rotating shaft 12 rotates and drives the stirring rod 17 and the scraper 18 to rotate, so that the flue gas is mixed with the washing liquid scattered on the bottom of the purification tank 1, at the same time, the flue gas which does not enter the filling layer 16 for reaction will be scraped off from the inner wall of the fine particles and volatile organic compounds, when the scraper 18 is worn, the slide rod 19 will slide in the stirring rod 17 under the action of the spring 20, so that the scraper 18 is always in abutment with the inner wall of the purification tank 1, the flue gas successively passes through the filling layer 16 and the washing liquid for full reaction, and finally is discharged through the outlet at the top of the purification tank 1, so as to realize the purification and filtration of harmful substances and harmful odor in the gas.

[0041] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A fume cleaning device for a BOPP film production line transverse stretching machine, comprising a cleaning tank (1), characterized in that: The outside lower part of the purification tank (1) is fixedly connected with an air inlet (2), the inside of the purification tank (1) is provided with two filling layers (16), the outside of the purification tank (1) is provided with a circulating assembly, the inside of the purification tank (1) is provided with a scraper assembly, and the outside of the scraper assembly of the purification tank (1) is provided with a cleaning assembly. The scraper assembly comprises a triangular support (3), the outside of the triangular support (3) is fixedly connected to the top of the purification tank (1), the outside of the triangular support (3) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly connected with a rotating shaft (12), the outside of the rotating shaft (12) is fixedly connected with a plurality of stirring rods (17), the inside of the stirring rod (17) is slidably connected with a sliding rod (19), the outside of the sliding rod (19) is sleeved with a spring (20), and the outside of the sliding rod (19) is fixedly connected with a scraper (18).

2. A flue gas cleaning device for a BOPP film production line transverse stretching machine according to claim 1, characterized in that: The cleaning assembly comprises a plurality of cleaning brushes (14), and the inside of the cleaning brush (14) is fixedly connected to the outside of the rotating shaft (12).

3. A BOPP film production line transverse stretching machine flue gas purification device according to claim 1, characterized in that: The circulating assembly comprises a circulating water tank (8), the outside of the circulating water tank (8) is fixedly connected with a conveying pipe (5), the lower part of the outside of the conveying pipe (5) is provided with a conveying pump (7), the lower part of the outside of the conveying pipe (5) is provided with a solenoid valve (6), the outside of the conveying pipe (5) is fixedly connected with two connectors (15), the outside of the circulating water tank (8) is fixedly connected with an input pipe (9), the outside of the input pipe (9) is provided with a feeding pump (11), and the outside of the input pipe (9) is provided with a solenoid valve (10).

4. A flue gas cleaning device for a BOPP film production line transverse stretching machine according to claim 1, characterized in that: The bottom end of the rotating shaft (12) is rotatably connected to the inner bottom wall of the purification tank (1), and the outside of the purification tank (1) is rotatably connected to the inside of the filling layer (16).

5. A flue gas cleaning device for a BOPP film production line transverse stretching machine according to claim 1, characterized in that: The inside wall of the purification tank (1) is fixedly connected with a demisting grid (13), and the outside of the rotating shaft (12) is rotatably connected to the inside of the demisting grid (13).

6. A BOPP film production line transverse stretching machine flue gas purification device according to claim 3, characterized in that: The outside of the connector (15) is fixedly connected with a plurality of atomizing nozzles (21).

7. A flue gas cleaning device for a BOPP film production line transverse stretching machine according to claim 1, characterized in that: The scraper (18) abuts against the inner wall of the purification tank (1), one end of the spring (20) is fixedly connected to the outside of the scraper (18), and the other end of the spring (20) is fixedly connected to the outside of the stirring rod (17).

8. A BOPP film production line transverse stretching machine flue gas purification device according to claim 3, characterized in that: The input pipe (9) is fixedly connected to the lower part of the outside of the purification tank (1) away from the circulating water tank (8).

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