Multi-stage dust removal type continuous drying integrated equipment for impregnated paperboards

Abstract

The invention relates to the technical field of impregnated paperboard drying, in particular to multistage dust removal type impregnated paperboard continuous drying integrated equipment which comprises a drying box body and a set of fans arranged on the two sides of the drying box body, an electric heating piece is arranged in the drying box body, and the inner wall of the drying box body is rotationally connected with a guide rotating roller used for conveying impregnated paperboards. Two fans in one group are oppositely arranged, and the central axis of each fan coincides with the thickness center of the impregnated paperboard; an airflow collision area is formed when the group of fans works, and airflow moves to the periphery of the airflow collision area; a group of oppositely-arranged fans are used for drying and blowing the impregnated paperboard, so that an airflow collision area is formed, airflow moves all around, the blowing area is increased, the airflow far away from the direction of the impregnated paperboard is recycled, the airflow is blown to the surface of the impregnated paperboard at an angle, and the surface of the impregnated paperboard is dried. And the part of air flow can also drive the removing assembly to remove the glue on the scraping plate.

Description

Technical Field

[0001] The invention relates to the technical field of impregnated cardboard drying, and in particular to a multi-stage dust removal type impregnated cardboard continuous drying integrated device. Background Art

[0002] Impregnated paper is made of a mixture of non-woven wood pulp, PE and plant fibers. It has superb absorption and anti-solvent capabilities and is also a very economical low-particle release paper towel. Impregnated cardboard is impregnated paper with a thickness greater than 0.3 mm. Impregnated paper will achieve different functions after being coated with specific glue. For example, when coated with phenolic glue, the impregnated paper has the function of improving the surface performance of artificial boards; when coated with a mixed glue of melamine formaldehyde resin and urea-formaldehyde resin, it is scratch-resistant and more beautiful.

[0003] After applying glue to the impregnated cardboard, it needs to be dried. If the impregnated cardboard is not dried enough, it is easy to produce pores and bright stars, and the product will have pinhole defects. Therefore, it is necessary to strengthen the drying effect of the impregnated cardboard.

[0004] After searching, the Chinese patent publication number CN117626708A discloses an integrated impregnation and drying equipment for impregnated paper, including a bracket and an impregnation device, a discharging device and a drying device connected to the bracket. The drying device includes multiple drying boxes, an air inlet assembly, a heating assembly, an air outlet assembly, a drain pipe and a control box. A drying chamber is opened in the drying box, and two movable rollers are fixedly connected to the two ends of the inner wall on both sides of the drying chamber. The air inlet assembly and the air outlet assembly are fixedly connected to the two sides of the drying box respectively, the heating assembly is fixedly connected to the surface of the drying box, and multiple condensing pipes are fixedly connected between the heating assembly and the air outlet assembly. The condensing pipes are arranged at an angle, and the drain pipe is fixedly connected to the bottom of the air outlet assembly. The drying boxes are arranged in a staggered manner in front and back. The above patent has the following shortcomings: when drying the impregnated paperboard, the fan fails to blow on the surface of the impregnated paperboard, but only blows from both sides of the impregnated paperboard, and cannot directly act on the surface of the impregnated paperboard, affecting the drying effect.

[0005] The purpose of the present invention is to solve the problem that the air flow has a poor effect on the surface of the impregnated paperboard during the drying process of the impregnated paperboard. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multi-stage dust removal impregnated cardboard continuous drying integrated equipment, which can effectively solve the existing problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a multi-stage dust removal type impregnated cardboard continuous drying integrated equipment, comprising a drying box and a group of fans arranged on both sides of the drying box, wherein an electric heating plate is arranged inside the drying box, and the inner wall of the drying box is rotatably connected to a guide roller for conveying the impregnated cardboard, wherein a group of fans comprises two fans arranged opposite to each other, and the central axis of the fans coincides with the center of the thickness of the impregnated cardboard; when the fans are in operation, an airflow collision area is formed and the airflow moves to the surrounding areas of the airflow collision area; a recovery cover arranged on both sides of the airflow collision area is further provided for recovering part of the airflow; a guide bellows is also provided for The invention is used to blow part of the recovered airflow at an angle to the surface of the impregnated paperboard; a steering tube is fixedly connected between the guide airbox and the recovery cover, and the angle between the extension line of the guide airbox and the surface of the impregnated paperboard is 15-60 degrees; support rollers are rotatably connected to the inner walls of both sides of the drying box body, and the support rollers are located at the intersection of the extension line of the guide airbox and the surface of the impregnated paperboard; the inner wall of the recovery cover is fixedly installed with evenly distributed guide plates; a plurality of vibration plates are provided inside the guide airbox to disperse the airflow; a scraper is fixedly connected to the inner wall of the drying box body to scrape glue off the surface of the impregnated paperboard.

[0009] Furthermore, the fan frame is provided with a first filter and a second filter in sequence from the inside to the outside; the first filter is made of activated carbon.

[0010] Furthermore, guide blocks are fixedly connected to both sides of the guide plate; the guide plate is arc-shaped, and the guide blocks are crescent-shaped.

[0011] Furthermore, one end of the guide bellows is processed with multiple ventilation holes; multiple fixed blocks are fixedly connected inside the guide bellows, one end of the fixed block is fixedly connected to a second elastic telescopic column, and the telescopic end of the second elastic telescopic column is fixedly connected to the vibration plate.

[0012] Furthermore, the surface of the scraper plate is processed into an arc shape;

[0013] Furthermore, it also includes a cleaning component for cleaning glue on the scraper plate; the cleaning component includes a wind wheel installed inside the steering tube and a cleaning block for scraping glue; the wind wheel is rotatably connected to a turntable through a transmission mechanism, and one end of the turntable is fixedly connected to a first elastic telescopic column, and the telescopic end of the first elastic telescopic column is fixedly connected to the cleaning block.

[0014] Furthermore, the surface of the cleaning block is processed into an arc shape that matches the arc of the scraper plate surface.

[0015] Furthermore, the upper and lower ends of the drying box are respectively provided with raised plates, the interior of the raised plates is provided with through grooves, and the interior of the through grooves is provided with sponges for recovering glue on the cleaning blocks.

[0016] Furthermore, the raised plate, the rotating disk and the scraping plate are located in the same plane.

[0017] Compared with the known public technologies, the technical solution provided by the present invention has the following beneficial effects:

[0018] A set of fans set in opposite directions are used to dry and blow the impregnated cardboard, forming an airflow collision area to move the airflow around, increasing the blowing area, and recycling the airflow away from the impregnated cardboard, so that this part of the airflow is blown at an angle to the surface of the impregnated cardboard. This part of the airflow can also drive the cleaning component to remove the glue on the scraper plate;

[0019] By using a small number of fans, the impregnated cardboard can be fully dried and the glue can be removed, which reduces the cost of the equipment, reduces the production noise and improves the factory efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal explosion structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the recovery cover and the guide air box of the present invention;

[0025] Figure 5 Schematic diagram of the guide plate structure of the present invention;

[0026] Figure 6 Schematic diagram of the vibration plate structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the fan structure of the present invention;

[0028] Figure 8 Schematic diagram of the angle between the guide bellows and the impregnated paperboard of the present invention.

[0029] Figure markings: 100-drying box; 101-guide roller; 102-support roller; 103-raised plate; 104-scraper plate; 200-fan; 201-first filter; 202-second filter; 300-recovery cover; 310-guide plate; 311-guide block; 400-cleaning component; 401-wind wheel; 402-turntable; 403-first elastic telescopic column; 404-cleaning block; 500-guide bellows; 501-steering pipe; 502-ventilation port; 510-vibration plate; 511-fixed block; 512-second elastic telescopic column. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0031] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0034] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] During the drying process of impregnated cardboard production, electric heating plates and fans are generally used in the drying box to dry the impregnated cardboard. The fans are generally located on both sides of the impregnated cardboard to prevent the wind from blowing directly onto the surface of the impregnated cardboard, thereby reducing the impact of the airflow on the tension of the impregnated cardboard during transportation. If the fans are directly set to blow directly onto the surface of the impregnated cardboard, on the one hand, the fan strength needs to be adjusted to avoid excessive wind force. On the other hand, due to the wide width of the impregnated cardboard, multiple sets of fans are required, which makes the drying process noisy and increases the equipment cost.

[0037] A multi-stage dust removal impregnated cardboard continuous drying integrated equipment, such as Figures 1-8 As shown, it includes a drying box body 100 and a group of fans 200 arranged on both sides of the drying box body 100. The frame of the fan 200 is sequentially provided with a first filter 201 and a second filter 202 from the inside to the outside. Specifically, the frame of the fan 200 is fixed to the inside of the drying box body 100 by bolts. The first filter 201 is distributed in a circular manner to form a relatively dense blocking area. The material of the first filter 201 is activated carbon. The activated carbon is used to recycle external dust and moisture, as well as evaporated glue inside the drying box body 100, thereby protecting the interior of the drying box body 100 from external environmental pollution and avoiding Chemical substances inside the drying box 100 diffuse to the outside. The second filter 202 is essentially a fence used to prevent large impurities from entering the drying box 100. An electric heating plate is provided inside the drying box 100. The inner wall of the drying box 100 is rotatably connected to a guide roller 101 for conveying the impregnated cardboard. It is worth noting that a set of fans 200 refers to two fans 200 arranged opposite to each other, and the central axis of the fans 200 coincides with the center of the thickness of the impregnated cardboard, so that the wind blown by the fans 200 is directed to both sides of the impregnated cardboard, and the airflow generated by the two fans 200 will form an airflow collision area on both sides of the impregnated cardboard (such as Figure 8 As shown in the figure, in the environment inside the drying box 100, the gas in the airflow collision area diffuses in all directions. A portion of the diffused airflow directly acts on the impregnated paperboard. This portion of the airflow is on both sides of the impregnated paperboard, and the forces acting thereon cancel each other out, which does not affect the tension of the impregnated paperboard during transportation. Another portion of the airflow moves along the surface of the impregnated paperboard, thereby blowing along the length of the impregnated paperboard. Another portion of the airflow moves in the opposite direction of the impregnated paperboard. At this time, the recovery covers 300 provided on both sides of the airflow collision area are used to recover this portion of the airflow.

[0038] The top of the recovery hood 300 is fixedly connected to the inner wall of the drying box 100 via a connecting rod. The inner wall of the recovery hood 300 is fixedly mounted with evenly distributed guide plates 310. The guide plates 310 prevent turbulence in the airflow recovered by the recovery hood 300, thereby guiding the airflow through the recovery hood 300. Guide blocks 311 are fixedly connected to both sides of the guide plates 310. The guide plates 310 are arc-shaped, and the guide blocks 311 are crescent-shaped. The guide blocks 311 are arranged on both sides of the guide plates 310, one high and one low. Multiple groups of guide blocks 311 cooperate with each other to guide the airflow through the recovery hood 300, and the recovered part of the airflow is blown toward the surface of the impregnated paperboard at an angle through the guide bellows 500.

[0039] The angle between the extension line of the guide air box 500 and the surface of the impregnated paperboard is 15-60 degrees. When the airflow acts on the impregnated paperboard within this angle range, the airflow will continue to move along the surface of the impregnated paperboard, reducing the pressure of the airflow directly acting on the surface of the impregnated paperboard. Figure 8 As shown, according to actual production and life, in order to facilitate and quickly install the equipment, the preferred angle of this embodiment is 45 degrees. A steering tube 510 is fixedly connected between the guide air box 500 and the recovery cover 300. The guide air box 500 is a rectangular parallelepiped. A plurality of vents 502 are processed on one end of the guide air box 500. After the air flow enters the guide air box 500 with a larger aperture from the steering tube 501 with a small aperture, the wind speed will become smaller, thereby reducing the subsequent pressure blowing onto the surface of the impregnated cardboard. A plurality of vibration plates 510 are provided inside the guide air box 500 to disperse the air flow. A plurality of fixed blocks 511 are fixedly connected inside the guide air box 500. One end of the fixed block 511 is fixedly connected to a second elastic telescopic column 512. The telescopic end of the second elastic telescopic column 512 is fixedly connected to the vibration plate 510. It should be noted that the second elastic The structure of the telescopic column 512 is that two rods are connected by a spring, and each vibration plate 510 cooperates with two groups of fixed blocks 511 respectively. Each group of fixed blocks 511 consists of two upper and lower blocks, which are respectively fixed at the upper and lower ends of the guide air box 500. The two groups of fixed blocks 511 are arranged front and back inside the guide air box 500. The front end of the front fixed block 511 is provided with a second elastic telescopic column 512, and the rear end of the rear fixed block 511 is provided with a second elastic telescopic column 512, so that the vibration plate 511 is arranged at an angle, and when the air flow passes through, the vibration plate 511 swings, thereby diffusing and diverting the air flow, so that when the air flow is discharged from the vent 502 of the guide air box 500, the overall air flow pressure difference is not much, avoiding the situation where the air flow in the middle position is large and the air flow at both ends is small, which causes the impregnated cardboard to sag when it is blown onto the surface of the impregnated cardboard.

[0040] In order to avoid large tension changes at the position where the guide bellows 500 blows towards the impregnated paperboard, support rollers 102 are rotatably connected to the inner walls of both sides of the drying box 100. The support rollers 102 are located at the intersection of the extension line of the guide bellows 500 and the surface of the impregnated paperboard. It is worth noting that there are four support rollers 102 in total, which are distributed in pairs on both sides of the inner wall of the drying box 100, and the support rollers 102 on one side of the drying box 100 are respectively placed on the upper and lower sides of the impregnated paperboard, thereby limiting the transmission of the impregnated paperboard and ensuring its transmission tension. In addition, the support rollers 102 are relatively short, and their length is slightly longer than the distance from the inner wall of the drying box 100 to the edge of the impregnated paperboard, ensuring that the support rollers 102 limit the position of the impregnated paperboard while not affecting the drying process of the impregnated paperboard over a large area.

[0041] Furthermore, during the drying process of the impregnated cardboard, if the glue on the impregnated cardboard is not completely integrated with the impregnated cardboard before drying, it will cause pores in the product. Therefore, the residual glue on the impregnated cardboard should be scraped off before drying.

[0042] The inner wall of the drying box 100 is fixedly connected with a scraping plate 104 for scraping glue off the surface of the impregnated cardboard. Specifically, there are two scraping plates 104 respectively arranged on both sides of the impregnated cardboard. During the transmission of the impregnated cardboard, the glue on both sides of the impregnated cardboard is scraped off simultaneously, and the transmission of the impregnated cardboard can also be limited. Figure 8 As shown, it should be understood that the direction of the impregnated cardboard is from top to bottom, that is, it first passes through the scraper plate 104 and then enters the airflow collision area. The surface of the scraper plate 104 is processed into an arc shape. The arc-shaped scraper plate 104 is convenient for collecting excess glue on the impregnated cardboard into the concave part of the scraper plate 104.

[0043] The device also includes a cleaning component 400 for cleaning glue on the scraper 104; the cleaning component 400 includes a wind wheel 401 installed inside the steering tube 501 and a cleaning block 404 for scraping glue; the wind wheel 401 is rotatably connected to the turntable 402 through a transmission mechanism, and one end of the turntable 402 is fixedly connected to a first elastic telescopic column 403, and the telescopic end of the first elastic telescopic column 403 is fixedly connected to the cleaning block 404. Specifically, there are two turntables 402, first elastic telescopic columns 403 and cleaning blocks 404 on one side of the impregnated cardboard, and each of the above components forms a group, and the two groups are arranged on both sides of the recovery cover 300, so as to achieve comprehensive cleaning of the scraper 104. It is worth noting that the structure of the first elastic telescopic column 403 is that the two rods are connected by a spring. The wind wheel 401 can use the airflow recovered by the recovery cover 300 to make the wind wheel 401 rotate, and then transmit power to the turntable 402 through the transmission mechanism, so that The rotary disk 402 drives the first elastic telescopic column 403 and the cleaning block 404 to rotate, thereby causing the cleaning block 404 to move and contact the recess of the scraper plate 104, cleaning and recycling the glue in the recess, and avoiding excessive glue on the scraper plate 104 causing the glue to overflow and flow onto the impregnated cardboard. In addition, it should be noted that the transmission mechanism is to transmit the rotational force of the wind wheel 401 into the rotational force of the rotary disk 402, which is a prior art, such as using a connecting rod gear or a connecting rod thread. The transmission mechanism is not described in detail herein. The surface of the cleaning block 404 is processed into an arc shape that matches the arc of the surface of the scraper plate 104. The shape of the cleaning block 404 matches the shape of the scraper plate 104 to ensure that it can scrape all the glue in the scraper plate 104, thereby ensuring the cleaning effect. At the same time, it should be noted that the cleaning block 404 in the cleaning assembly 400 should avoid motion interference. It is only necessary to stagger the circular motion of the cleaning block 404 or synchronize it in the same direction.

[0044] The drying box body 100 is respectively provided with a raised plate 103 at the upper and lower ends, and a through groove is provided inside the raised plate 103. A sponge is installed inside the through groove for recovering the glue on the cleaning block 404. The raised plate 103, the turntable 402, the cleaning block 404 and the scraper plate 104 are located in the same plane. The sponge in the raised plate 103 can absorb the glue on the cleaning block 404. At the same time, the sponge can also prevent external impurities from entering the drying box body 100 through the through groove of the raised plate 103. The staff can replace the sponge in time to ensure the effectiveness of the cleaning component 400. It is worth noting that, driven by the wind wheel 401, the cleaning block 404 performs a circular motion with the center of the turntable 402 as the center of the circle. On the one hand, the glue on the scraper plate 104 is collected and recovered, and on the other hand, the collected glue is placed in the sponge of the raised plate 103, thereby achieving the effect of scraping the residual glue on the impregnated cardboard for a long time without replacing parts, thereby avoiding the impact of equipment shutdown on production.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-stage dust removal impregnated cardboard continuous drying integrated device, comprising a drying box (100) and a set of fans (200) arranged on both sides of the drying box (100), wherein an electric heating plate is arranged inside the drying box (100), and the inner wall of the drying box (100) is rotatably connected to a guide roller (101) for conveying the impregnated cardboard, characterized in that: A set of fans (200) comprises two fans (200) arranged opposite to each other, and the central axis of the fans (200) coincides with the center of the thickness of the impregnated paperboard. The set further comprises recovery covers (300) arranged on both sides of the airflow collision area for recovering part of the airflow; and also comprises a guide bellows (500) for blowing the recovered part of the airflow toward the surface of the impregnated paperboard at an angle. A steering tube (501) is fixedly connected between the guide bellows (500) and the recovery cover (300). The angle between the extension line of the guide bellows (500) and the surface of the impregnated paperboard is 15°-60°, support rollers (102) are rotatably connected to the inner walls of both sides of the drying box (100), and the support rollers (102) are located at the intersection of the extension line of the guide air box (500) and the surface of the impregnated paperboard. Evenly distributed guide plates (310) are fixedly installed on the inner wall of the recovery cover (300), and a plurality of vibration plates (510) are provided inside the guide air box (500) to disperse the airflow. A scraping plate (104) is fixedly connected to the inner wall of the drying box (100) for scraping glue on the surface of the impregnated paperboard.

2. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 1, characterized in that: The frame of the fan (200) is provided with a first filter (201) and a second filter (202) in sequence from the inside to the outside, and the material of the first filter (201) is activated carbon.

3. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 1, characterized in that: Guide blocks (311) are fixedly connected to both sides of the guide plate (310); the guide plate (310) is in an arc shape, and the guide blocks (311) are in a crescent shape.

4. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 1, characterized in that: One end of the guide bellows (500) is processed with a plurality of ventilation openings (502), and a plurality of fixed blocks (511) are fixedly connected inside the guide bellows (500). One end of the fixed block (511) is fixedly connected to a second elastic telescopic column (512), and the telescopic end of the second elastic telescopic column (512) is fixedly connected to the vibration plate (510).

5. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 1, characterized in that: The surface of the scraper plate (104) is processed into an arc shape.

6. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 5, characterized in that: The invention also includes a cleaning component (400) for cleaning glue on the scraper plate (104); the cleaning component (400) includes a wind wheel (401) installed inside the steering tube (501) and a cleaning block (404) for scraping glue; the wind wheel (401) is rotatably connected to a turntable (402) via a transmission mechanism; one end of the turntable (402) is fixedly connected to a first elastic telescopic column (403); the telescopic end of the first elastic telescopic column (403) is fixedly connected to the cleaning block (404).

7. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 6, characterized in that: The surface of the cleaning block (404) is processed into an arc shape that matches the arc of the surface of the scraping plate (104).

8. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 7, characterized in that: The drying box (100) is provided with raised plates (103) at the upper and lower ends respectively. A through groove is provided inside the raised plates (103). A sponge is installed inside the through groove for recovering glue on the cleaning block (404).

9. The multi-stage dust removal impregnated cardboard continuous drying integrated equipment according to claim 8, characterized in that: The raised plate (103), the rotating disk (402) and the scraping plate (104) are located in the same plane.

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