Circulating drying equipment for enhancing compression resistance of cartons

Abstract

The utility model discloses a circulation drying device for enhancing carton compression resistance, which comprises two drying rooms arranged side by side, a steam return bucket is arranged outside the drying rooms, an air inlet pipe and an air return pipe connected with the steam return bucket are respectively arranged behind the two drying rooms, and the air inlet pipe and the air return pipe are connected with the steam return bucket. The air inlet pipe and the air return pipe extend into the two drying rooms, a plurality of heating air devices are arranged in each drying room, a plurality of air outlet pipes are arranged on the air return pipe, a pressurizing device is arranged on the air inlet pipe, and a control unit is arranged outside the drying rooms; hot water generated in the boiler is recycled into the steam water return barrel, heat energy of return water in the steam water return barrel is circulated through the air inlet pipe and the air return pipe through the pressurizing device, the heat energy is heated in the two drying rooms in a pipeline circulating mode, and the drying effect is achieved; electric energy is changed into heat energy, the heat energy is recycled while electricity is saved, the effects of saving energy and optimizing resources are achieved, and the overall energy efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper preparation, in particular to a circulating drying device for enhancing the compressive strength of cartons. Background Art

[0002] When the existing paper is just prepared, its humidity is relatively high and it needs to be dried. Generally, the existing drying room drives the drying equipment by electricity to heat, so as to achieve the drying effect of the paper. This process consumes a lot of electricity and the energy consumption is too large.

[0003] In order to improve the resource utilization efficiency, many production enterprises have begun to explore more sustainable drying technologies; the hot water generated by the boiler during the paper preparation process can be effectively utilized as a heat source for paper drying; by recycling the hot water in the boiler, the dependence on electric energy can be reduced and the energy consumption can be significantly reduced; specifically, this technical solution transports the hot water to the drying room through pipelines and combines with the fan system to conduct hot air circulation, so that the heat energy can be evenly transferred to the surface of the paper to achieve an efficient drying effect.

[0004] Therefore, a circulating drying device for enhancing the compressive strength of cartons is proposed. Content of the Utility Model

[0005] The purpose of the utility model is: aiming at the above problems, a circulating drying device for enhancing the compressive strength of cartons is provided. The utility model recovers the hot water generated in the boiler into the steam return water bucket, and forms a cycle of the return water heat energy in the steam return water bucket through a pressurizing device through the intake pipe and the return pipe, and raises the heat energy in two drying rooms through the circulating mode of the pipeline to achieve the drying effect; changes the electric energy into heat energy, saves electricity while reusing the heat energy, plays the role of energy saving and resource optimization, improves the overall energy efficiency. In order to achieve the above utility model purpose, the technical scheme adopted by the utility model is as follows:

[0006] According to one aspect of the utility model, a circulating drying device for enhancing the compressive strength of cartons is provided, which includes drying rooms. The two drying rooms are arranged side by side. A steam return water bucket is arranged outside the two drying rooms. An intake pipe and a return pipe are respectively arranged behind the two drying rooms, and both the intake pipe and the return pipe are connected to the steam return water bucket. The intake pipe and the return pipe both extend into the two drying rooms. A plurality of heating gas devices are arranged in each drying room. A plurality of air outlet pipes for hot air circulation are arranged on the return pipe, and all the air outlet pipes are located in the drying room. A pressurizing device is arranged at one end of the intake pipe close to the steam return water bucket, and a control unit is arranged outside the drying room on the side close to the steam return water bucket.

[0007] Preferably, the heating gas device includes a plurality of heating tube sleeves arranged on the intake pipe, and each heating tube sleeve is communicated with the intake pipe. An intake grille is arranged in each heating tube sleeve. The intake grille is composed of a plurality of intake plates. Each intake plate is hinged to the inner wall of the heating tube sleeve through a rotating rod. An adjusting component for adjusting the direction of the intake grille is arranged on the heating tube sleeve.

[0008] Preferably, the adjusting component includes a support plate arranged at the lower end of the heating tube sleeve. A vertically arranged telescopic rod is arranged on the support plate. A sliding groove is formed on the side of each intake plate. A connecting rod is arranged at the output end of the telescopic rod. A plurality of convex blocks are arranged on the connecting rod, and each convex block extends into the corresponding sliding groove. A triggering component electrically connected to the telescopic rod is arranged in the heating tube sleeve.

[0009] Preferably, the triggering component includes a connecting seat arranged at the lower end of the inner wall of the heating tube sleeve. A contact head is arranged on the connecting seat. A connecting plate is arranged on the inner side wall of the heating tube sleeve. A connecting head is arranged at the lower end of the connecting plate. The connecting head is electrically connected to an external power supply, and the contact head is electrically connected to the telescopic rod.

[0010] Preferably, there is a gap between the contact head and the connecting head, and the contact head is made of a heat-deformable material.

[0011] Preferably, the gap between the contact head and the connecting head is parallel to the direction of the hot air blown out of the intake pipe.

[0012] Preferably, a narrow throat is arranged in each outlet pipe.

[0013] Preferably, the return air pipe is located above the intake pipe.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] 1. For a cyclic drying device for enhancing the compressive strength of a carton according to the present utility model, the hot water generated in the boiler is recovered into the steam return water bucket. The heat energy of the return water in the steam return water bucket is circulated through the intake pipe and the return air pipe by a pressurizing device, and the heat energy is used to increase the temperature in the two drying rooms through the circulation mode of the pipeline, achieving the drying effect; converting electrical energy into heat energy, while saving electricity, heat energy is reused, playing the role of energy conservation and resource optimization, and improving the overall energy efficiency.

[0016] 2. A cyclic drying device for enhancing the compressive strength of cartons according to the present utility model. By providing an air intake grille inside the heating gas device, the hot air is divided into multiple parallel flow air currents. The divided air currents can be more evenly distributed throughout the system, ensuring uniform heat transfer, improving the heating efficiency. Moreover, the parallel flow air currents can reduce turbulence and chaos, making the air flow more stable, thereby reducing energy loss and noise.

[0017] 3. A cyclic drying device for enhancing the compressive strength of cartons according to the present utility model. If the hot air blows directly onto the paper for a long time, it is likely to damage the fiber structure of the paper, possibly resulting in deformation, curling or cracking, and even making it dry and brittle, prone to breakage or tearing. By providing an adjustment component on the heating tube sleeve in cooperation with the air intake grille, the air intake grille composed of multiple air intake plates is adjusted upward, so that the hot air is discharged upward and blows towards the ceiling. Without affecting the overall drying effect of the drying room, the safety of the paper is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic flow chart of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the intake pipe and the return pipe of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the heating gas device of the present utility model;

[0021] Figure 4 is a schematic specific structural diagram of the air intake grille of the present utility model;

[0022] Figure 5 is the present utility model Figure 4 magnified view of part A;

[0023] Figure 6 is the present utility model Figure 4 magnified view of part B;

[0024] In the drawings, 1, drying room; 2, steam return water bucket; 3, intake pipe; 4, return pipe; 5, outlet pipe; 6, pressurizing device; 7, control unit; 8, heating tube sleeve; 9, air intake grille; 901, air intake plate; 10, rotating rod; 11, support plate; 12, telescopic rod; 13, sliding groove; 14, connecting rod; 15, convex block; 16, connecting seat; 17, contact head; 18, connecting plate; 19, connecting head; 20, narrow throat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the purpose, technical solutions and advantages of the present utility model more clearly understood, the following preferred embodiments are cited with reference to the accompanying drawings for a further detailed description of the present utility model. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the utility model, and these aspects of the present utility model can be implemented even without these specific details.

[0026] Please refer to Figures 1 to 6 , the present utility model provides a cyclic drying device for enhancing the compressive strength of cartons, and the technical solutions are as follows:

[0027] It includes a drying chamber 1. The two drying chambers 1 are arranged side by side. A steam return water bucket 2 is provided outside the two drying chambers 1. An intake pipe 3 and a return pipe 4 are respectively provided behind the two drying chambers 1, and both the intake pipe 3 and the return pipe 4 are connected to the steam return water bucket 2. The intake pipe 3 and the return pipe 4 both extend into the two drying chambers 1. A plurality of heating gas devices are provided in each drying chamber 1. A plurality of outlet pipes 5 for hot gas circulation are provided on the return pipe 4, and all the plurality of outlet pipes 5 are located inside the drying chamber 1. A pressurizing device 6 is provided at one end of the intake pipe 3 close to the steam return water bucket 2, and a control unit 7 is provided outside the drying chamber 1 on the side close to the steam return water bucket 2.

[0028] The internal humidity of the prepared paper still does not meet the standard, and thus drying treatment is required. In this process, the paper needs to be transported to the drying chamber 1 for drying treatment. Generally, the existing drying chamber 1 drives the drying equipment by electricity for heating, so as to achieve the drying effect of the paper. This process consumes a large amount of electricity and has excessive energy consumption. During the paper preparation process, a boiler is needed. The hot water generated in the boiler is recovered into the steam return water bucket 2, and the heat energy of the return water in the steam return water bucket 2 is circulated through the intake pipe 3 and the return pipe 4 by the pressurizing device 6. The heat energy is increased in temperature in the two drying chambers 1 through the circulation mode of the pipeline, so as to achieve the drying effect. By changing electric energy to heat energy, while saving electricity, heat energy is reused, which plays a role in energy conservation and resource optimization and improves the overall energy efficiency.

[0029] The heating gas device includes a plurality of heating tube sleeves 8 provided on the intake pipe 3, and each heating tube sleeve 8 is communicated with the intake pipe 3. An intake grille 9 is provided in each heating tube sleeve 8. The intake grille 9 is composed of a plurality of intake plates 901. Each intake plate 901 is hinged to the inner wall of the heating tube sleeve 8 through a rotating rod 10. An adjusting component for adjusting the direction of the intake grille 9 is provided on the heating tube sleeve 8.

[0030] Stack the paper in the drying room 1. With the cooperation of the steam return bucket 2, the intake pipe 3, and the return pipe 4, the drying room 1 is heated for drying. The hot air enters into multiple heating tube sleeves 8 through the intake pipe 3, and then the hot air is divided into multiple parallel flow air currents through the intake grille 9. The divided air currents can be more evenly distributed throughout the system, ensuring uniform heat transfer, improving the heating efficiency, and the parallel flow air currents can reduce turbulence and chaos, making the air flow more stable, thereby reducing energy loss and noise;

[0031] Taking the distances between two drying rooms 1 and the steam return bucket 2 as a reference, they are the first drying room 1 and the second drying room 1 respectively. The temperature in the first drying room 1 is set at 80°C - 85°C, and the temperature in the second drying room 1 is set at 65°C. The adjustment component is only arranged on the intake grille 9 in the first drying room 1;

[0032] The temperature in the drying room 1 can reach a temperature of 65°C - 85°C through the action of the hot air in the steam return bucket 2. When it reaches above 85°C, if the hot air blows directly onto the paper for a long time, it is easy to damage the fiber structure of the paper, and there may be deformation, curling or cracking, and even make it dry and brittle, easy to break or tear; through the control of the adjustment component, the intake grille 9 composed of multiple intake plates 901 is adjusted upward, so that the hot air is discharged upward and blows towards the ceiling, ensuring the safety of the paper while not affecting the overall drying effect of the drying room 1.

[0033] The adjustment component includes a support plate 11 arranged at the lower end of the heating tube sleeve 8. A vertically arranged telescopic rod 12 is provided on the support plate 11. A chute 13 is opened on the side of each intake plate 901. A connecting rod 14 is provided at the output end of the telescopic rod 12. Multiple bumps 15 are provided on the connecting rod 14, and each bump 15 extends into the corresponding chute 13. A trigger component electrically connected to the telescopic rod 12 is arranged in the heating tube sleeve 8.

[0034] When the hot air temperature exceeds 85°C, the trigger component is activated, and then the telescopic rod 12 is activated to drive the connecting rod 14 to move upward. The multiple bumps 15 on the connecting rod 14 slide in the corresponding chutes 13 and slide to the edge of the chutes 13, and then drive the corresponding intake plates 901 to rotate upward around the rotating rod 10, playing a role in adjusting the direction of the intake grille 9, so that the hot air flows upward, avoiding direct contact between the high-temperature hot air and the paper, preventing damage to the fiber structure of the paper, and thus avoiding the situation of deformation, curling or cracking, and improving the stability of paper drying; when the hot air temperature drops below 85°C for a period of time, the trigger component stops, and then the telescopic rod 12 drives the connecting rod 14 to retract. Through the cooperation of the multiple bumps 15 and the chutes 13, the multiple intake plates 901 are driven back to the initial position and restored to the horizontal state, playing a role in cutting the hot air into multiple parallel flow air currents when the hot air passes through;

[0035] The connecting rod 14 is an L-shaped rod. When the telescopic rod 12 is arranged, it is slightly set outward so that the output end of the telescopic rod 12 can extend and retract normally. The connecting rod 14 is an L-shaped rod, which can penetrate into the gap between the air inlet plate 901 and the heating tube sleeve 8, cooperate with multiple protrusions and chutes 13, and drive multiple air inlet plates 901 to rotate. This design avoids punching holes in the heating tube sleeve 8 and reduces the possibility of hot air leaking from the punched holes.

[0036] The trigger assembly includes a connecting seat 16 arranged at the lower end of the inner wall of the heating tube sleeve 8. A contact head 17 is arranged on the connecting seat 16. A connecting plate 18 is arranged on the inner side wall of the heating tube sleeve 8. A connecting head 19 is arranged at the lower end of the connecting plate 18. The connecting head 19 is electrically connected to an external power supply, and the contact head 17 is electrically connected to the telescopic rod 12. There is a gap between the contact head 17 and the connecting head 19, and the contact head 17 is made of a heat-deformable material; the contact head 17 is made of a shape memory alloy, such as nickel-titanium alloy, etc., and can return to a preset shape after heating, which is suitable for applications that require shape adjustment under temperature changes.

[0037] There is a gap between the contact head 17 and the connecting head 19. Due to the reason of thermal expansion and contraction, the contact head 17 will expand and deform when it is in a high-temperature state. When the temperature reaches above 85 °C, the contact head 17 after being heated and expanded and deformed will cover the gap, and it will contact the connecting head 19, so that the telescopic rod 12 is connected to the external power supply, and the telescopic rod 12 starts to drive the air inlet grille 9 to move upward; when the temperature drops below 85 °C for a period of time, the contact head 17 will gradually cool and contract, and then the contact head 17 will move away from the connecting head 19, and then the telescopic rod 12 is disconnected from the external power supply, and the output end of the telescopic rod 12 drives the connecting rod 14 to retract, that is, drives the air inlet grille 9 to return to the initial state to prepare for the next adjustment;

[0038] By setting the contact head 17 as a heat-deformable material, the self-adaptability is improved. The gap between the connecting head 19 and the contact head 17 enables the contact head 17 to self-adjust according to the rise or fall of the temperature when the temperature changes, and maintain a good contact effect; at the same time, the adaptive design can improve the stability and reliability of the system, ensure normal operation under different working conditions; and by utilizing the thermal expansion and contraction characteristics of the material, additional adjustment mechanisms or complex mechanical structures can be reduced, the design can be simplified and the manufacturing cost can be reduced.

[0039] The gap between the contact head 17 and the connection head 19 is parallel to the direction of the hot air blown out by the air inlet pipe 3; after the hot air cools down, water droplets will condense, and the water droplets will hang on the contact head 17 or the connection head 19. When the hot air is blown out, the direction of the hot air can effectively carry away the condensed water, reducing the accumulation of moisture on the contact head 17 and the connection head 19, preventing the accumulation of moisture, ensuring the stable connection between the contact head 17 and the connection head 19, reducing corrosion or oxidation problems caused by moisture, thereby extending the service life of the component, and at the same time reducing the risk of poor contact or short circuit caused by moisture; enabling the contact head 17 and the connection head 19 to always remain dry during the connection process. A dry environment helps maintain the electrical conductivity of the contact points, reduces the increase in resistance caused by condensed water, ensures the smooth flow of current, and improves stability.

[0040] A narrow throat 20 is provided in each of the air outlet pipes 5; due to the pressure difference generated by the gas flow in the return air pipe 4, the hot air in the drying room 1 is driven to enter the return air pipe 4 through the air outlet pipe 5, enabling the steam return water bucket 2, the air inlet pipe 3, the drying room 1, and the return air pipe 4 to form a cycle. During the drying period, the drying room 1 can always play a drying role, ensuring the stability of drying;

[0041] A narrow throat 20 is provided in the air outlet pipe 5, and its structural design is used to convert the kinetic energy of the fluid from the pressure energy. After the fluid passes through a gradually narrowing throat, the velocity will increase significantly, and at the same time the pressure will decrease, that is, it can increase the flow rate of the hot air passing through the air outlet pipe 5, thereby accelerating the process of gas circulation, reducing the temperature cooling loss generated between the air inlet pipe 3 and the return air pipe 4, and to a certain extent ensuring that the temperature in the drying room 1 is maintained between 65°C and 85°C, that is, ensuring the stability of drying.

[0042] The return air pipe 4 is located above the air inlet pipe 3; the hot air flowing above can use gravity to guide the cooler return air gas to the heating area, thereby improving the heat exchange efficiency of the system; setting the return air pipe 4 above can reduce the accumulation of condensed water in the return air pipe 4, reduce the impact of moisture on the system, and ensure the smooth flow of gas.

[0043] Workflow: The hot water generated during the paper preparation process is recycled into the steam return bucket 2. When the paper needs to be dried, the pressurizing device 6 is manually started, and the heating gas in the steam return bucket 2 is introduced into the intake pipe 3. The hot gas is discharged through multiple intake grilles 9 to play a role in drying. Due to the heat energy consumption of the hot gas transfer, the first drying room 1 is relatively close to the steam return bucket 2, so the drying temperature is set at 80°C - 85°C. The second drying room 1 is set at a position farther away from the steam return bucket 2, so the drying temperature is set at about 65°C. The freshly prepared and relatively wet paper is placed in the first drying room 1 for drying. After drying in the first drying room 1 for a period of time, the paper is transferred to the second drying room 1 for continuous drying until the dryness of the paper reaches the standard.

[0044] During the process, in the first drying room 1, when the temperature of the hot gas exceeds 85°C, the contact head 17 after thermal expansion and deformation will cover the gap, and it contacts the connector 19, so that the telescopic rod 12 is connected to the external power supply. The telescopic rod 12 starts, drives the intake grille 9 to move upward, and adjusts the direction of the intake grille 9 upward to prevent the hot gas with too high temperature from directly contacting the wet paper, avoiding the direct contact of the high-temperature hot gas with the paper, preventing the fiber structure of the paper from being damaged, and thus preventing the paper from deforming, curling or cracking. When the temperature drops below 85°C for a period of time, the contact head 17 will gradually cool and shrink, so the contact head 17 moves away from the connector 19, and then the telescopic rod 12 is disconnected from the external power supply. The output end of the telescopic rod 12 drives the connecting rod 14 to retract, that is, drives the intake grille 9 to return to the initial state to prepare for the next adjustment.

[0045] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A cyclic drying device for enhancing the compressive strength of cardboard boxes, characterized in that Including: A drying room (1), two of the drying rooms (1) are arranged side by side, a steam return water bucket (2) is provided outside the two drying rooms (1), an air inlet pipe (3) and an air return pipe (4) are respectively provided behind the two drying rooms (1), and both the air inlet pipe (3) and the air return pipe (4) are connected to the steam return water bucket (2). The air inlet pipe (3) and the air return pipe (4) both extend into the two drying rooms (1). A plurality of heating gas devices are provided in each drying room (1). A plurality of air outlet pipes (5) for hot air circulation are provided on the air return pipe (4), and the plurality of air outlet pipes (5) are all located inside the drying room (1). A pressurizing device (6) is provided at one end of the air inlet pipe (3) close to the steam return water bucket (2), and a control unit (7) is provided outside the drying room (1) on the side close to the steam return water bucket (2).

2. The cyclic drying device for enhancing the compressive strength of a cardboard box according to claim 1, characterized in that: The heating gas device includes a plurality of heating tube sleeves (8) provided on the air inlet pipe (3), and each heating tube sleeve (8) is communicated with the air inlet pipe (3). An air inlet grille (9) is provided in each heating tube sleeve (8). The air inlet grille (9) is composed of a plurality of air inlet plates (901). Each air inlet plate (901) is hinged to the inner wall of the heating tube sleeve (8) through a rotating rod (10). An adjusting component for adjusting the direction of the air inlet grille (9) is provided on the heating tube sleeve (8).

3. The cyclic drying device for enhancing the compressive strength of a cardboard box according to claim 2, characterized in that: The adjusting component includes a support plate (11) provided at the lower end of the heating tube sleeve (8). A vertically arranged telescopic rod (12) is provided on the support plate (11). A chute (13) is opened on the side of each air inlet plate (901). A connecting rod (14) is provided at the output end of the telescopic rod (12). A plurality of convex blocks (15) are provided on the connecting rod (14), and each convex block (15) extends into the corresponding chute (13). A triggering component electrically connected to the telescopic rod (12) is provided inside the heating tube sleeve (8).

4. A cyclic drying device for enhancing the compressive strength of cardboard boxes according to claim 3, characterized in that: The triggering component includes a connecting seat (16) provided at the lower end of the inner wall of the heating tube sleeve (8). A contact head (17) is provided on the connecting seat (16). A connecting plate (18) is provided on the inner side wall of the heating tube sleeve (8). A connecting head (19) is provided at the lower end of the connecting plate (18). The connecting head (19) is electrically connected to an external power supply, and the contact head (17) is electrically connected to the telescopic rod (12).

5. The cyclic drying device for enhancing the compressive strength of a cardboard box according to claim 4, wherein: There is a gap between the contact head (17) and the connecting head (19), and the contact head (17) is made of a heat-deformable material.

6. A cyclic drying device for enhancing the compressive strength of cartons according to claim 5, characterized in that: The gap between the contact head (17) and the connecting head (19) is parallel to the direction of the hot air blown out by the air inlet pipe (3).

7. A cyclic drying device for enhancing the compressive strength of cardboard boxes according to claim 1, characterized in that: A narrow throat (20) is provided in each air outlet pipe (5).

8. A cyclic drying device for enhancing the compressive strength of cardboard boxes according to claim 1, characterized in that: The air return pipe (4) is located above the air inlet pipe (3).

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