Drying machine for paperboard production line

Abstract

The utility model relates to the technical field of paperboard production lines, in particular to a drying machine for a paperboard production line, which comprises a left-right through drying box, a paperboard conveying structure arranged at the inner bottom of the drying box, and a blocking structure capable of blocking the left side and the right side of the drying box, the outer portions of the two through grooves are fixedly provided with an air supply cover and an air return cover respectively, the outer portion of the drying box is provided with an air heating circulation structure, and the input end and the output end of the air heating circulation structure are fixedly communicated with the air return cover and the air supply cover respectively. And hot air is used for directly drying moisture in the adhesive, so that the drying energy consumption is reduced, and meanwhile, the condition that the adhesive is extruded out due to extrusion when the adhesive is dried through a hot pressing plate and the condition that a corrugated board is flattened and deformed are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of paperboard production lines, in particular to a drying machine for a paperboard production line. Background Art

[0002] Adhesives are used in the production process of corrugated cardboard, and the finished product often contains a certain amount of moisture, which reduces its compressive strength. Therefore, the corrugated cardboard needs to be dried. However, hot pressing plates are currently used for drying. When drying the corrugated cardboard, the hot pressing plates heat the two sides of the corrugated cardboard to dry it. This drying method has high energy consumption and squeezes the corrugated cardboard, which makes it easy to squeeze out the adhesive placed in the middle of the corrugated cardboard. For this reason, a dryer for a cardboard production line is designed that can easily utilize the gap in the middle of the corrugated cardboard as a hot air drying channel, so that the hot air can directly dry the moisture in the adhesive, reduce the drying energy consumption, and avoid the adhesive being squeezed out due to squeezing during drying through the hot pressing plate, and ensure the state of the corrugated cardboard. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a dryer for a cardboard production line, which facilitates the use of the gap in the middle of the corrugated cardboard as a hot air drying channel, so that the hot air directly dries the moisture in the adhesive, reducing the drying energy consumption, and at the same time avoiding the adhesive being squeezed out due to squeezing during drying through the hot pressing plate and avoiding the corrugated cardboard being flattened and deformed.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dryer for a cardboard production line, comprising a drying box that passes through from left to right, a cardboard transmission structure is arranged at the inner bottom of the drying box, and also comprises a blocking structure that can block the left and right sides of the drying box, through grooves are opened on the front and rear side walls of the drying box, and an air supply hood and a return air hood are fixedly installed on the outside of the two through grooves, respectively, an air heating circulation structure is arranged on the outside of the drying box, and the input end and the output end of the air heating circulation structure are fixedly connected with the return air hood and the air supply hood respectively.

[0007] Preferably, the air heating circulation structure includes a heating box, a dehumidification box and a fan. A support frame is fixedly installed on the bottom of the drying box. The heating box, the dehumidification box and the fan are all fixedly installed on the support frame. The output end of the fan is fixedly connected to the air supply hood, the input end of the fan is fixedly connected to the output end of the heating box, the input end of the dehumidification box is fixedly connected to the return air hood, and the output end of the dehumidification box is fixedly connected to the input end of the heating box through a connecting pipe.

[0008] Preferably, the fan and the air supply hood, as well as the return air hood and the dehumidification box are fixedly connected via a connecting pipe network having a plurality of connecting branches.

[0009] Preferably, the blocking structure includes two blocking plates respectively vertically slidingly matched with the left and right sides of the drying box, the bottoms of the two blocking plates are fixedly connected by a fixing bar, and the support frame is provided with a lifting and adjusting mechanism for driving the fixing bar to lift and lower.

[0010] Preferably, the lifting and adjusting mechanism includes a screw rod rotatably connected between the drying box and the support frame, the fixing bar is threadedly connected to the screw rod, and also includes a lifting and adjusting motor that drives the screw rod to rotate and is fixedly mounted on the support frame.

[0011] Preferably, it also includes a U-shaped blocking groove that is slidably matched with the two through grooves, and the U-shaped blocking groove is fixedly connected to the top of the drying box through a lifting drive cylinder.

[0012] Preferably, a protective mesh plate flush with the inner wall of the drying box is fixedly installed at the through groove.

[0013] Preferably, the outer tops of the two blocking plates are rotatably connected to guide rollers.

[0014] Preferably, the support plate conveying structure includes a conveyor belt arranged in the drying box and a conveying drive motor that drives the conveyor belt to rotate and is fixedly installed outside the drying box.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a dryer for a cardboard production line, which has the following

[0017] Beneficial effects:

[0018] The dryer for the cardboard production line facilitates horizontally pushing stacks of cardboards into the drying box through the cardboard conveying structure. The left and right sides of the drying box can be blocked by the blocking mechanism after multiple stacks of cardboards are sent into the drying box. The air supply hood and the return air hood are arranged on the front and rear sides of the drying box. The air in the drying box is sent into the air heating circulation structure through the return air hood for heating under the cooperation of the air heating circulation structure, and then sent into the drying box through the air supply hood. The structure of the corrugated cardboard is utilized to pass through the gap in the middle of the corrugated cardboard to heat the corrugated cardboard. The moisture in the adhesive in the board is entrained, and the air containing moisture is sent back to the air heating circulation structure through the return air hood, and the residual heat of the returned air is used to reheat and dry it, and then it is sent to the drying box through the air supply hood to dry the corrugated cardboard. The dryer used in the cardboard production line is convenient for using the gap in the middle of the corrugated cardboard as a hot air drying channel, so that the hot air can directly dry the moisture in the adhesive, reduce the drying energy consumption, and avoid the adhesive being squeezed out due to squeezing during drying through the hot pressing plate, and avoid the corrugated cardboard being flattened and deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model from other perspectives as a whole;

[0021] Figure 3 It is a schematic diagram of the structure of the air supply cover, the air return cover and the air heating circulation structure of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the plugging structure of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the cooperation between the U-shaped blocking groove and the protective mesh plate of the utility model.

[0024] Markings in the attached drawings: 1. Drying box; 2. Support frame; 3. Conveyor belt; 4. Conveying drive motor; 5. Air supply hood; 6. Return air hood; 7. Heating box; 8. Dehumidification box; 9. Fan; 10. Connecting pipe; 11. Connecting pipe network; 12. Connecting branch pipe; 13. Clamp; 14. Sealing plate; 15. Guide roller; 16. Fixing strip; 17. Screw; 18. Lifting and lowering adjustment motor; 19. Screw sleeve; 20. Protective mesh plate; 21. U-shaped sealing groove; 22. Lifting and lowering drive cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example:

[0027] See also Figure 1-5 A dryer for a cardboard production line includes a drying box 1 that passes through from left to right. A cardboard transmission structure is provided at the inner bottom of the drying box 1. The drying box 1 also includes a blocking structure that can block the left and right sides of the drying box 1. Through grooves are provided on the front and rear side walls of the drying box 1. An air supply hood 5 and a return air hood 6 are fixedly installed on the outside of the two through grooves. An air heating circulation structure is provided on the outside of the drying box 1. The input end and the output end of the air heating circulation structure are fixedly connected to the return air hood 6 and the air supply hood 5 respectively.

[0028] Specifically, the air heating circulation structure includes a heating box 7, a dehumidification box 8 and a fan 9. A support frame 2 is fixedly installed at the bottom of the drying box 1. The heating box 7, the dehumidification box 8 and the fan 9 are all fixedly installed on the support frame 2. The output end of the fan 9 is fixedly connected to the air supply hood 5, the input end of the fan 9 is connected to the output end of the heating box 7, the input end of the dehumidification box 8 is fixedly connected to the return air hood 6, and the output end of the dehumidification box 8 is fixedly connected to the input end of the heating box 7 through a connecting pipe 10. When the fan 9 is started, the air in the drying box 1 is first sent into the dehumidification box 8 through the return air hood 6 for dehumidification, and then sent into the heating box 7 through the connecting pipe 10 for heating, and then pressurized and sent back to the drying box 1 through the air supply hood 5. Furthermore, the connecting pipe 10 is provided with a clamp 13 fixedly connected to the support frame 2 to increase the stability of the connecting pipe 10.

[0029] Specifically, the fan 9 and the air supply hood 5, as well as the return air hood 6 and the dehumidification box 8 are fixedly connected via a connecting pipe network 11 having a plurality of connecting branches 12. The coordination of the connecting pipe network 11 and the connecting branches 12 facilitates uniform supply and return air, enables horizontal air circulation, and facilitates air circulation through the gaps in the corrugated cardboard.

[0030] Specifically, the blocking structure includes two blocking plates 14 which are respectively vertically slidably matched with the left and right sides of the drying box 1. The bottoms of the two blocking plates 14 are fixedly connected by a fixing bar 16. A lifting and adjusting mechanism for driving the fixing bar 16 to rise and fall is provided on the support frame 2. The left and right sides of the drying box 1 can be blocked conveniently through the two blocking plates 14. The lifting and adjusting mechanism can conveniently drive the fixing bar 16 and the two blocking plates 14 to rise and fall, thereby facilitating the two blocking plates 14 to move away from the left and right sides of the drying box 1, thereby facilitating the connection of the left and right sides of the drying box 1, and thus facilitating loading and unloading.

[0031] Specifically, the lifting and adjusting mechanism includes a screw 17 rotatably connected between the drying box 1 and the support frame 2, a fixing bar 16 threadedly connected to the screw 17, and also includes a lifting and adjusting motor 18 that drives the screw 17 to rotate and is fixedly installed on the support frame 2. The lifting and adjusting motor 18 is started to make the output end of the lifting and adjusting motor 18 rotate clockwise or counterclockwise, so as to drive the screw 17 to rotate clockwise or counterclockwise, thereby driving the fixing bar 16 and the two blocking plates 14 to perform lifting and lowering movements. Furthermore, the bottom of the fixing bar 16 is fixedly connected with a screw sleeve 19 threadedly connected to the screw 17, and the screw sleeve 19 is used to increase the stability of the connection.

[0032] Specifically, it also includes a U-shaped blocking groove 21 that slides with the two through grooves. The U-shaped blocking groove 21 is fixedly connected to the top of the drying box 1 through a lifting drive cylinder 22. Through the cooperation of the U-shaped blocking groove 21 and the lifting drive cylinder 22, the height of the air circulation can be limited to meet the drying needs of a stack of corrugated cardboards at different heights.

[0033] Specifically, a protective mesh plate 20 flush with the inner wall of the drying box 1 is fixedly installed at the through groove. The setting of the protective mesh plate 20 ensures that the corrugated cardboard is in the drying box 1 and prevents it from entering the air supply cover 5 or the air return cover 6 under the circulation of air.

[0034] Specifically, the outer tops of the two blocking plates 14 are rotatably connected with guide rollers 15, and the guide rollers 15 are arranged to turn over the introduction and export of a stack of corrugated cardboards.

[0035] Specifically, the support plate conveying structure includes a conveyor belt 3 arranged in the drying box 1 and a conveying drive motor 4 that drives the conveyor belt 3 to rotate and is fixedly installed on the outside of the drying box 1. Starting the conveying drive motor 4 can drive the conveyor belt 3 to rotate, thereby driving a stack of corrugated cardboard to be transported into the drying box 1 or sent out of the drying box 1.

[0036] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0037] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0038] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0039] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dryer for a cardboard production line, characterized in that: The invention comprises a drying box (1) which is through-connected on the left and right sides. The inner bottom of the drying box (1) is provided with a cardboard transmission structure. The invention also comprises a blocking structure which can block the left and right sides of the drying box (1). The front and rear side walls of the drying box (1) are provided with through slots. An air supply hood (5) and an air return hood (6) are respectively fixedly mounted on the outside of the two through slots. An air heating circulation structure is arranged on the outside of the drying box (1). The input end and the output end of the air heating circulation structure are respectively fixedly connected with the air return hood (6) and the air supply hood (5).

2. The dryer for a paperboard production line according to claim 1, characterized in that: The air heating circulation structure comprises a heating box (7), a dehumidification box (8) and a fan (9); a support frame (2) is fixedly installed at the bottom of the drying box (1); the heating box (7), the dehumidification box (8) and the fan (9) are all fixedly installed on the support frame (2); the output end of the fan (9) is fixedly connected to the air supply hood (5); the input end of the fan (9) is fixedly connected to the output end of the heating box (7); the input end of the dehumidification box (8) is fixedly connected to the return air hood (6); and the output end of the dehumidification box (8) is fixedly connected to the input end of the heating box (7) via a connecting pipe (10).

3. The dryer for a paperboard production line according to claim 2, characterized in that: The fan (9) and the air supply hood (5), as well as the air return hood (6) and the dehumidification box (8), are fixedly connected via a connecting pipe network (11) having a plurality of connecting branches (12).

4. The dryer for a paperboard production line according to claim 3, characterized in that: The blocking structure comprises two blocking plates (14) respectively vertically slidably matched with the left and right sides of the drying box (1); the bottoms of the two blocking plates (14) are fixedly connected via a fixing bar (16); and a lifting and adjusting mechanism for driving the fixing bar (16) to rise and fall is provided on the support frame (2).

5. The dryer for a paperboard production line according to claim 4, characterized in that: The lifting and adjusting mechanism comprises a screw rod (17) rotatably connected between the drying box (1) and the support frame (2), the fixing bar (16) being threadedly connected to the screw rod (17), and a lifting and adjusting motor (18) driving the screw rod (17) to rotate and fixedly mounted on the support frame (2).

6. The dryer for a paperboard production line according to claim 5, characterized in that: It also comprises a U-shaped blocking groove (21) that is slidably matched with the two through grooves, and the U-shaped blocking groove (21) is fixedly connected to the top of the drying box (1) via a lifting drive cylinder (22).

7. The dryer for a paperboard production line according to claim 6, characterized in that: A protective mesh plate (20) flush with the inner wall of the drying box (1) is fixedly installed at the through groove.

8. The dryer for a paperboard production line according to claim 7, characterized in that: The outer tops of the two blocking plates (14) are both rotatably connected to guide rollers (15).

9. The dryer for a paperboard production line according to claim 8, characterized in that: The cardboard transmission structure comprises a conveyor belt (3) arranged in a drying box (1) and a transmission drive motor (4) which drives the conveyor belt (3) to rotate and is fixedly installed outside the drying box (1).

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