A drying device for heat-resistant paper production line

Abstract

The present invention discloses a drying device for a heat-resistant paper production line, comprising a mounting frame and a plurality of drying cylinders arranged on the mounting frame, wherein a plurality of heating spaces are separated in the drying cylinders by fan-shaped partitions, a one-way pipe is connected between two adjacent heating spaces, and a switch valve is arranged on the plurality of one-way pipes; a fixed disk is fixedly connected to the mounting frame, a heat storage box and a hot air pipe are arranged on the fixed disk, and the heat storage box is connected with the hot air pipe through a bifurcated pipe; and a heating mechanism is also included, which is arranged on the fixed disk. By dividing the drying cylinder into a plurality of heating spaces, the heating space can be reduced, and the rotation of the drying cylinder drives the plurality of heating spaces synchronously, and the heating space to be in contact with the paper is heated by the heating mechanism, so that the temperature of the drying cylinder when in contact with the paper can be effectively guaranteed, and the heating efficiency of the heat-resistant paper is improved, and the device has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of paper production equipment, and in particular to a drying device for a heat-resistant paper production line. Background Art

[0002] Thermally modified insulating paper is a cellulose-based insulating paper that uses chemical modification to reduce its aging rate. By adding heat stabilizers during the preparation of traditional A-grade 105℃ insulating paper, its temperature resistance is increased to E-grade 120℃, thereby delaying the aging process of cellulose and having very good heat resistance and insulation. During its production process, it needs to be dried using a drying cylinder, which can continuously dry the paper blank after pulp forming.

[0003] For example, the Chinese utility model patent with application number: 202223404621.5, entitled A drying cylinder device, discloses a drying cylinder device, which forms a negative pressure by sucking vacuum through the through holes on the cylinder surface, removes superheated steam and bubbles in the paper sheets, slows down the heating rate of the paper sheets, and prevents the paper from becoming brittle and breaking. If the internal baffle needs to be maintained, it is only necessary to open the manhole cover first, and then the staff can enter the paper feeding area. It is only necessary to remove the support rod and then remove all the bolts on the connecting parts. At this time, the baffle can be fixed and removed, and the baffle can be maintained, which is very convenient for later maintenance, and the support rod strengthens the supporting force of the baffle and the paper feeding area.

[0004] The shortcomings of the prior art are that the drying cylinder equipment in the existing heat-resistant paper drying device, when drying paper, mostly directly fills the entire drying cylinder with hot air, and the internal space of the drying cylinder is large, the heating efficiency is slow, and during the process of the drying cylinder rotating and contacting the paper, not all surfaces are in contact with the outside of the paper. The cylinder wall that separates from the paper after contact may contain a certain amount of water vapor, which will also affect the effect of the hot air heating the drying cylinder. Summary of the invention

[0005] The object of the present invention is to provide a drying device for a heat-resistant paper production line to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying device for a heat-resistant paper production line, comprising a mounting frame and a plurality of drying cylinders arranged on the mounting frame, wherein a plurality of heating spaces are separated in the drying cylinders by fan-shaped partitions, and a one-way pipe is connected between two adjacent heating spaces, and a switch valve is arranged on the plurality of one-way pipes; a fixed disk is fixedly connected to the mounting frame, a heat storage box and a hot air pipe are arranged on the fixed disk, and the heat storage box is connected to the hot air pipe through a forked pipe; and a heating mechanism is also included, which is arranged on the fixed disk; during drying, the hot air in the heat storage box and the hot air pipe is transported to the plurality of heating spaces for intermittent heating through the heating mechanism, and the gas flow inside the next heating space is driven through the one-way pipe to achieve drainage and drying.

[0007] As a further description of the above technical solution:

[0008] The heating mechanism includes a first annular block and a second annular block on a fixed plate through a support rod, and the first annular block and the second annular block are rotatably connected to a third annular block; the first annular block is connected to a hot air pipe through a first connecting unit, the second annular block is connected to a heat storage tank through a second connecting unit, and the third annular block is connected to a corresponding heating space through a third connecting unit.

[0009] As a further description of the above technical solution:

[0010] The first connection unit includes a first heating groove opened on the first annular block, and the hot air pipe is connected to the first heating groove.

[0011] As a further description of the above technical solution:

[0012] The second connecting unit includes a second heating groove opened on the second annular block, and the second heating groove is connected to the heat storage tank through a connecting pipe.

[0013] As a further description of the above technical solution:

[0014] The third connection unit includes a plurality of conduction grooves opened in the third annular block, and the plurality of conduction grooves are all connected to the corresponding heating space through heat conduction pipes.

[0015] As a further description of the above technical solution:

[0016] A piston unit is arranged inside the heat storage box. The piston unit comprises a piston plate slidably connected in the heat storage box. A spring is arranged between the piston plate and the heat storage box.

[0017] As a further description of the above technical solution:

[0018] A plurality of the heating spaces are all connected with a drainage pipe, a sealing assembly is arranged on the drainage pipe, and a switch assembly for driving the sealing assembly to open is arranged on the fixed plate.

[0019] As a further description of the above technical solution:

[0020] The sealing assembly comprises a sealing plug arranged on the drain pipe, and the sealing plug is connected to the drain pipe through a telescopic rod.

[0021] As a further description of the above technical solution:

[0022] The switch assembly comprises a concave block fixedly connected to a fixed plate, wherein a track groove is provided in the concave block; and the sealing plug is slidably connected in the track groove via a limiting rod.

[0023] As a further description of the above technical solution:

[0024] A water guide pipe is arranged in the concave block.

[0025] In the above technical solution, the heat-resistant paper production line drying device provided by the present invention has the beneficial effects of:

[0026] The present invention can reduce the heating space by arranging a mounting frame, a drying cylinder, a heating space, a one-way pipe, a switching valve, a fixed plate, a heat storage device, a hot air pipe and a heating mechanism, and dividing the drying cylinder into a plurality of heating spaces. The drying cylinder drives the plurality of heating spaces synchronously by rotating, and the heating space that will contact the paper is heated by the heating mechanism, so that the temperature of the drying cylinder when contacting the paper can be effectively guaranteed, and the heating efficiency of the heat-resistant paper is improved. While the heating space is heated by hot air, the gas inside the heating space can be introduced into the next heating space to be heated through the cooperation of the one-way pipe and the switching valve, so as to drive the gas and liquid inside the next space to be heated to flow, and facilitate the drainage operation. The device has strong practicality.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0028] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0031] Figure 2 Another perspective view of the overall structure provided by the embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the structure of two adjacent drying cylinders provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structure of a drying cylinder provided in an embodiment of the present invention;

[0034] Figure 5-6 A schematic longitudinal section diagram of a heating mechanism structure provided by an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the internal structure of a heat storage tank provided in an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of the internal structure of a concave block provided in an embodiment of the present invention;

[0037] Fig. 9 for Figure 8 Enlarged view of point A in the middle.

[0038] Description of reference numerals:

[0039] 1. Mounting frame; 11. Fan-shaped partition; 12. Heating space; 13. One-way pipe; 14. Switch valve; 15. Fixed plate; 16. Heat storage box; 17. Bifurcated pipe; 18. Hot air pipe; 19. Drying cylinder; 21. First annular block; 22. Second annular block; 23. Third annular block; 24. Support rod; 3. First heating groove; 41. Second heating groove; 42. Connecting pipe; 51. Conducting groove; 52. Heat conducting pipe; 61. Piston plate; 62. Spring; 7. Drain pipe; 81. Sealing plug; 82. Telescopic rod; 91. Concave block; 92. Track groove; 93. Limit rod; 10. Water pipe. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0041] See also Figure 1-9 A heat-resistant paper production line drying device provided in this embodiment includes a mounting frame 1 and a plurality of drying cylinders 19 arranged on the mounting frame 1. The mounting frame 1 is provided with a driving member for driving the drying cylinders 19 to rotate. By providing the mounting frame 1, the plurality of drying cylinders 19 in the drying device can be installed and supported. The drying cylinders 19 are existing paper drying equipment and will not be described in detail herein. The drying cylinders 19 are each divided into a plurality of heating spaces 12 by a fan-shaped partition 11. The plurality of heating spaces 12 divided by the fan-shaped partition 11 have the same area, and the plurality of heating spaces 12 are distributed in a circular array around the axis of the drying cylinder 19. A one-way pipe 13 is connected between two adjacent heating spaces 12. A switch valve 14 is provided on the plurality of one-way pipes 13. The one-way pipe 13 can provide a channel for the flow of gas inside the two adjacent heating spaces 12. The switch valve 14 is used to control whether the gas inside the one-way pipe 13 can circulate. A fixed plate 15 is connected, on which a heat storage box 16 and a hot air pipe 18 are arranged. The heat storage box 16 is connected to the hot air pipe 18 through a bifurcated pipe 17, and the hot air pipe 18 is connected to an external boiler to provide heat energy for the operation of the entire device. The heat energy of the hot air pipe 18 can enter the heat storage box 16 through the bifurcated pipe 17 for temporary storage; it also includes a heating mechanism, which is arranged on the fixed plate 15; during drying, the hot air in the heat storage box 16 and the hot air pipe 18 is transported to multiple heating spaces 12 for intermittent heating through the heating mechanism, and the gas flow in the next heating space 12 is driven through the one-way pipe 13 to achieve drainage and drying. When the drying cylinder 19 rotates, the positions of the multiple heating spaces 12 arranged therein will change. In this process, the heating mechanism will heat the heating space 12 that will be in contact with the paper in turn. Compared with the heating of the entire drying cylinder 19, the heating space 12 of the heating space 12 is small, and its heating efficiency will also be relatively improved.

[0042] In an embodiment further provided by the present invention, the heating mechanism includes a first annular block 21 and a second annular block 22 on the fixed disk 15 through a support rod 24, and the first annular block 21 and the second annular block 22 are rotatably connected to a third annular block 23. The first annular block 21 and the second annular block 22 can be supported and fixed by setting the support rod 24. The two third annular blocks 23 and the corresponding first annular block 21 and the second annular block 22 can be combined to form a circular ring shape. The specific shape of the third annular block 23 can be referred to in the appendix of the specification. Figure 3 , Attachment Figure 5-6 , wherein the cross-sectional radius of the second annular block 22 is greater than the cross-sectional radius of the first annular block 21; the first annular block 21 is connected to the hot air pipe 18 through a first connecting unit, the second annular block 22 is connected to the heat storage tank 16 through a second connecting unit, and the third annular block 23 is connected to the corresponding heating space 12 through a third connecting unit.

[0043] Further, the first connection unit includes a first heating groove 3 opened on the first annular block 21, and the hot air pipe 18 is connected to the first heating groove 3. For the specific shape of the first heating groove 3, please refer to the attached manual. Figure 6 .

[0044] Furthermore, the second connecting unit includes a second heating groove 41 opened on the second annular block 22, and the second heating groove 41 is connected to the heat storage tank 16 through a connecting pipe 42. For the specific shape of the second heating groove 41, please refer to the appendix of the specification. Figure 6 , the first heating tank 3 and the second heating tank 41 are arranged in the same direction.

[0045] In an embodiment further provided by the present invention, the third connecting unit includes a plurality of conduction grooves 51 opened in the third annular block 23, and the plurality of conduction grooves 51 are connected to the relative heating space 12 through a heat pipe 52, and the conduction grooves 51 correspond to the heating space 12. When the third annular block 23 rotates so that the conduction grooves 51 are connected to the first heating groove 3 and the second heating groove 41, the heating space 12 can be heated.

[0046] In the embodiment provided by the present invention, a piston unit is provided inside the heat storage box 16, and the piston unit includes a piston plate 61 slidably connected to the heat storage box 16, and a spring 62 is provided between the piston plate 61 and the heat storage box 16. When the first heating tank 3 and the second heating tank 41 are not connected to the conduction tank 51, the gas inside the hot air pipe 18 will flow into the storage box through the bifurcated pipe 17, and the hot air enters the heat storage box 16 for temporary storage. When the gas inside the heat storage box 16 increases, the piston plate 61 is pushed to move and squeeze the spring 62. When the first heating tank 3 and the second heating tank 41 are connected to the conduction tank 51, the hot air pipe 18 no longer flows into the heat storage box 16, and the stored gas inside the heat storage box 16 will also be pressed into the second heating tank 41 through the connecting pipe 42 for use under the action of the spring 62 and the piston plate 61.

[0047] In the embodiment provided by the present invention, a plurality of heating spaces 12 are all connected to a drain pipe 7, and a sealing assembly is provided on the drain pipe 7. The drain pipe 7 can be sealed by providing the sealing assembly. A switch assembly for driving the sealing assembly to open is provided on the fixed plate 15. When drainage is required, the sealing assembly on the drain pipe 7 can be driven to open to perform drainage operation by providing the switch assembly.

[0048] Specifically, the sealing assembly includes a sealing plug 81 arranged on the drain pipe 7, which is connected to the drain pipe 7 via a telescopic rod 82. The sealing plug 81 can seal one end of the drain pipe 7, and the sealing plug 81 is always kept fixed on the drain pipe 7 via the telescopic rod 82.

[0049] In the solution further provided by the present invention, the switch assembly includes a concave block 91 fixedly connected to the fixed plate 15, and a track groove 92 is provided in the concave block 91; the sealing plug 81 is slidably connected to the track groove 92 through a limiting rod 93, and the track groove 92 is composed of an arc and an inclined groove. When the sealing plug 81 moves to the inclined groove of the track, the sealing plug 81 will be driven to separate from the drain pipe 7 under the action of the limiting rod 93. At this time, the water droplets generated in the heating space 12 can be discharged through the drain pipe 7.

[0050] In a solution further provided by the present invention, a water pipe 10 is provided in the concave block 91 , and the water pipe 10 can discharge the water flowing into the concave block 91 through the drainage pipe 7 to the outside of the concave block 91 .

[0051] Working principle: When working, the multiple drying cylinders 19 on the mounting frame 1 are driven to rotate by starting an external driving source. The heat-resistant paper transmitted can be heated and dried by the rotation of the drying cylinders 19. In the drying process, the external hot air will enter the first heating groove 3 inside the first annular block 21 through the hot air pipe 18, and the rotation of the drying cylinder 19 will drive the third annular block 23 to rotate synchronously. When the third annular block 23 rotates, the conduction groove 51 arranged inside it is not connected with the first heating groove 3. At this time, the excess of the hot air pipe 18 will enter the heat storage box 16 through the bifurcated pipe 17 for storage until the drying cylinder 1 When the conduction groove 51 in the third annular block 23 is connected to the first heating groove 3 by continuing to rotate, the conduction groove 51 in another third annular block 23 will also be connected to the second heating groove 41 in the second annular block 22. At this time, the hot air will enter the corresponding heating space 12 through the hot air pipe 18, the first heating groove 3, the conduction groove 51 and the heat pipe 52, and the hot air inside the heat storage box 16 will also enter the same heating space 12 through the spring 62, the piston plate 61, the connecting pipe 42, the second heating groove 41, the conduction groove 51 and the heat pipe 52 to heat the heating space 12 inside it;

[0052] At the same time, the switch valve 14 connected to the one-way pipe 13 between the heating space 12 and the next space to be heated 12 is opened, and the switch valve 14 connected to the one-way pipe 13 between the heating space 12 and the previous space to be heated 12 is closed, and the sealing plug 81 connected to the drain pipe 7 of the next heating space 12 will be separated from the drain pipe 7 under the action of the track groove 92 and the limit rod 93. At this time, the hot air entering the heating space 12 will diffuse in the heating space 12, resulting in an increase in the gas inside the heating space 12, and the previous gas inside it will be pressed into the next heating space 12 through the one-way pipe 13. After the gas enters the next heating space 12 through the one-way pipe 13, it can promote the gas flow in the next heating space 12, thereby blowing the water droplets attached to the inside of the drying cylinder 19 to flow and discharge them through the opened drain pipe 7. At this time, the drying cylinder 19 continues to rotate, and the heated heating space 12 rotates to contact the paper for drying operation, and the next heating space 12 will rotate to the heating position for heating operation, and the above operation steps can be continued.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drying device for a heat-resistant paper production line, comprising a mounting frame (1) and a plurality of drying cylinders (19) arranged on the mounting frame (1), characterized in that: The drying cylinder (19) is divided into a plurality of heating spaces (12) by a fan-shaped partition (11), two adjacent heating spaces (12) are connected by a one-way pipe (13), and a switch valve (14) is provided on each of the plurality of one-way pipes (13); A fixed plate (15) is fixedly connected to the mounting frame (1), a heat storage box (16) and a hot air pipe (18) are arranged on the fixed plate (15), and the heat storage box (16) is connected to the hot air pipe (18) via a bifurcated pipe (17); It also includes a heating mechanism, which is arranged on the fixed plate (15); During drying, the hot air in the heat storage box (16) and the hot air pipe (18) is transported to the multiple heating spaces (12) through the heating mechanism for intermittent heating, and the gas flow inside the next heating space (12) is driven through the one-way pipe (13) to achieve drainage and drying; The heating mechanism comprises a first annular block (21) and a second annular block (22) on a fixed plate (15) via a support rod (24), wherein a third annular block (23) is rotatably connected to both the first annular block (21) and the second annular block (22); The first annular block (21) is in communication with the hot air pipe (18) via a first connection unit, the second annular block (22) is in communication with the heat storage tank (16) via a second connection unit, and the third annular block (23) is in communication with the corresponding heating space (12) via a third connection unit; The first connection unit comprises a first heating groove (3) formed on a first annular block (21), and the hot air pipe (18) is in communication with the first heating groove (3); The second connection unit comprises a second heating groove (41) opened on the second annular block (22), and the second heating groove (41) is connected to the heat storage tank (16) through a connecting pipe (42).

2. A heat-resistant paper production line drying device according to claim 1, characterized in that: The third connection unit comprises a plurality of conduction grooves (51) formed in the third annular block (23); the plurality of conduction grooves (51) are connected to the corresponding heating space (12) via a heat conduction pipe (52).

3. A heat-resistant paper production line drying device according to claim 1, characterized in that: A piston unit is arranged inside the heat storage box (16), and the piston unit comprises a piston plate (61) slidably connected in the heat storage box (16), and a spring (62) is arranged between the piston plate (61) and the heat storage box (16).

4. A heat-resistant paper production line drying device according to claim 1, characterized in that: A plurality of the heating spaces (12) are all connected to a drainage pipe (7), a sealing component is provided on the drainage pipe (7), and a switch component for driving the sealing component to open is provided on the fixed disk (15).

5. A heat-resistant paper production line drying device according to claim 4, characterized in that: The sealing assembly comprises a sealing plug (81) arranged on the drain pipe (7), and the sealing plug (81) is connected to the drain pipe (7) via a telescopic rod (82).

6. A heat-resistant paper production line drying device according to claim 5, characterized in that: The switch assembly comprises a concave block (91) fixedly connected to a fixed plate (15), wherein a track groove (92) is provided in the concave block (91); The sealing plug (81) is slidably connected in the track groove (92) via a limiting rod (93).

7. A heat-resistant paper production line drying device according to claim 6, characterized in that: A water guide pipe (10) is arranged in the concave block (91).

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