A drying device for bonding multi-layer paperboard

Abstract

The present application relates to the technical field of paperboard production, and discloses a drying device for bonding multi-layer paperboards, comprising a drying box with a paper guide port, wherein a drying conveying roller line is arranged in the drying box, wherein the drying conveying roller line is composed of two drying conveying roller groups arranged opposite to each other, wherein the drying conveying roller group is composed of a drying roller arranged in the drying box and heat exchange rollers located on both sides of the drying roller, and a connecting component is arranged between two adjacent heat exchange rollers; the present application uses a drying box, a preheating roller, a drying roller, a cooling roller, a microwave generator, a connecting component, and a guide component in coordination, wherein the cooling roller is used to gradually cool down and exchange heat for the dried paperboard, so that the temperature of the cooling oil is increased, and finally the cooling oil enters the preheating roller, and then the paperboard is preheated by heat exchange of the preheating roller, thereby improving the utilization rate of thermal energy, reducing energy consumption, realizing rapid and uniform drying of the multi-layer paperboard, improving production efficiency and product quality, and having the effects of high drying efficiency, high energy utilization rate, and preventing curling.

Description

Technical Field

[0001] The present application relates to the technical field of paperboard production, and in particular to a drying device for bonding multi-layer paperboards. Background Art

[0002] In the production and processing of corrugated cardboard, multiple layers of cardboard need to be glued and bonded. In order to improve the bonding stability between the layers of cardboard, a dryer is needed to quickly dry the glued cardboard. Existing drying devices usually use a single hot air circulation or infrared radiation method for drying. When the cardboard dryer dries its cardboard, it needs to be transported by a conveyor belt. Although this method can achieve basic drying effects. However, the use of hot air and infrared radiation is inefficient in terms of heat energy utilization, resulting in serious energy waste.

[0003] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In order to solve the problem that the efficiency of heat energy utilization using hot air and infrared radiation is low, resulting in serious energy waste, the present application provides a drying device for bonding multi-layer paperboards.

[0005] The present application provides a drying device for bonding multi-layer paperboards using the following technical solution:

[0006] A drying device for gluing multi-layer paperboards comprises a drying box with a paper guide port, wherein a drying conveying roller line is arranged in the drying box, wherein the drying conveying roller line is composed of two drying conveying roller groups arranged opposite to each other, wherein the drying conveying roller group is composed of a drying roller arranged in the drying box and heat exchange rollers located on both sides of the drying rollers, wherein a connecting component is arranged between two adjacent heat exchange rollers, wherein a flow guide component is arranged between the two outermost heat exchange rollers, wherein the two flow guide components are connected with an external coolant circulation device, and are used for coolant to flow into the heat exchange roller on one side and flow out of the heat exchange roller on the other side, thereby realizing preheating of the paperboard to be dried on one side and cooling of the dried paperboard on the other side.

[0007] Preferably, the drying box is composed of a preheating chamber, a drying chamber and a cooling chamber. The preheating chamber and the drying chamber, and the drying chamber and the cooling chamber are connected to each other. A microwave generator is arranged in the drying chamber for heating the paperboard.

[0008] Preferably, the guide assembly includes a three-way pipe, one end of which passes through the drying box and is connected to an external coolant circulation device, and the two ends of the three-way pipe away from the external coolant circulation device are respectively rotatably connected to the corresponding two heat exchange rollers.

[0009] Preferably, the connecting component includes a conducting pipe, both ends of which are rotatably connected to corresponding heat exchange rollers, respectively, so as to realize the circulation of the coolant between the external coolant circulation device and the heat exchange roller.

[0010] Preferably, the drying roller comprises a roller body with a heating fluid, and a temperature sensor and a heater rotatably disposed in the roller body, and the temperature of the roller body is controlled by the temperature sensor and the heater.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] Through the coordinated use of a drying box, a preheating roller, a drying roller, a cooling roller, a microwave generator, a connecting component, and a guide component, the cooling roller, the preheating roller, and an external cooling oil circulation device are connected, and the cooling roller is used to gradually cool down the dried paperboard for heat exchange, so that the temperature of the cooling oil increases, and finally enters the preheating roller, and then the paperboard is preheated by heat exchange of the preheating roller, thereby improving the utilization rate of thermal energy, reducing energy consumption, realizing rapid and uniform drying of multi-layer paperboard, and improving production efficiency and product quality; compared with the existing technology, the method has the effects of high drying efficiency, high energy utilization rate, and preventing curling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0014] Figure 2 is a schematic diagram of a second perspective stereoscopic structure of an embodiment of the application;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure from a third perspective of an embodiment of the application.

[0016] Explanation of the reference numerals: 1. Drying box; 101. Preheating chamber; 102. Drying chamber; 103. Cooling chamber; 2. Preheating roller; 3. Drying roller; 301. Roller body; 302. Mounting seat one; 303. Temperature sensor; 304. Heater; 4. Cooling roller; 5. Microwave generator; 6. Connecting assembly; 601. Mounting seat two; 602. Conducting pipe; 7. Diversion assembly; 701. Three-way pipe; 702. Mounting seat three; 8. Chain transmission unit. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-3 This application is described in further detail.

[0018] The present application embodiment discloses a drying device for bonding multi-layer paperboards. Figure 1-3A drying device for bonding multi-layer paperboards comprises a drying box 1, which is composed of a preheating chamber 101, a drying chamber 102 and a cooling chamber 103. Notches are arranged between the preheating chamber 101 and the drying chamber 102, and between the drying chamber 102 and the cooling chamber 103, through which paperboards can be fed in and out and a chain transmission unit 8 can be driven. Two groups of drying rollers 3 are arranged in the drying chamber 102, which are relatively distributed up and down, and paperboards are heated and dried by the drying rollers 3. Two groups of heat exchange rollers are arranged in the preheating chamber 101 and the cooling chamber 103, and two adjacent heat exchange rollers are arranged in the preheating chamber 101 and the cooling chamber 103. A connecting component 6 is installed between the heat exchange rollers, and the high-temperature paperboard dried in the drying chamber 102 is cooled by heat exchange through the cooling chamber 103, so as to shorten the cooling time of the paperboard and prevent the paperboard from warping, so that the temperature of the fluid of the heat exchange roller in the cooling chamber 103 gradually increases. The high-temperature fluid is connected to the heat exchange roller in the preheating chamber 101 through the heat exchange roller, and contacts with the paperboard to be dried to realize heat exchange and increase the temperature of the paperboard. A guide component 7 is installed between the preheating chamber 101 and the cooling chamber 103, and the guide component 7 is connected with the two outermost heat exchange rollers.

[0019] Reference Figure 2 The flow guide assembly 7 includes a three-way pipe 701 and two mounting seats 702 installed on the three-way pipe 701. The two mounting seats 702 are rotatably installed on the corresponding heat exchange rollers. An external cooling oil circulation device is connected between the two three-way pipes 701 to realize cooling oil circulation.

[0020] Reference Figure 3 The connecting component 6 includes a conducting pipe 602 and two conducting pipes 602 installed at both ends of the mounting seat 601. The conducting pipes 602 are rotatably installed at the ends of the corresponding heat exchange rollers, and a mechanical seal is installed between the conducting pipe 602 and the inner wall of the heat exchange roller.

[0021] Reference Figure 2 The plurality of heat exchange rollers in the preheating chamber 101 constitute two layers of preheating rollers 2, which are used to preheat the passing cardboard. The plurality of heat exchange rollers in the cooling chamber 103 constitute two layers of cooling rollers 4, which are connected through the connecting component 6 to achieve the temperature of the fluid flowing through the preheating roller 2 and the cooling roller 4. The temperature is gradually reduced to both sides with the drying roller 3 as the center, so as to perform step-by-step cooling on the passing cardboard and prevent the cardboard from warping.

[0022] Reference Figure 2 Two microwave generators 5 are also installed in the drying chamber 102. The two microwave generators 5 are installed opposite to each other up and down. The microwave generators 5 perform microwave drying on the passing cardboard to accelerate the drying rate.

[0023] Reference Figure 3The drying roller 3 includes a roller body 301, on which a mounting seat 302 is rotatably mounted, and on which a temperature sensor 303 and a heater 304 are mounted. The temperature of the fluid in the roller body 301 is adjusted by the temperature sensor 303 and the heater 304, thereby adjusting the drying temperature. A mechanical seal is installed between the mounting seat 302 and the roller body 301.

[0024] Reference Figure 3 The two adjacent preheating rollers 2 are synchronously driven by the chain transmission unit 8, the two adjacent cooling rollers 4 are synchronously driven by the chain transmission unit 8, the two adjacent roller bodies 301 are synchronously driven by the chain transmission unit 8, and the innermost cooling roller 4 and preheating roller 2 are synchronously driven with the corresponding roller bodies 301 through the chain transmission unit 8 respectively.

[0025] The implementation principle of a drying device for bonding multi-layer cardboards in the embodiment of the present application is as follows: the multi-layer cardboards to be dried first enter the preheating chamber 101, the cardboards are preheated by the upper and lower preheating rollers 2, the preheated cardboards enter the drying chamber 102, the cardboards pass through the upper and lower drying rollers 3, heating fluid is passed through the drying rollers 3, the drying temperature is regulated by the temperature sensor 303 and the heater 304, and the microwave generator 5 can accelerate the evaporation of water inside the cardboards to improve the drying efficiency, the dried cardboards enter the cooling chamber 103, the cardboards are cooled by the upper and lower cooling rollers 4, the cooling fluid inside the cooling rollers 4 gradually increases as it approaches the roller body 301, and enters the preheating roller 2 through the connecting component 6, the temperature inside the preheating roller 2 gradually decreases as it moves away from the roller body 301, and returns to the external cooling circulation device, thereby realizing rapid and uniform drying of the multi-layer cardboards and improving production efficiency and product quality.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drying device for gluing multi-layer paperboards, comprising a drying box (1) with a paper guide port, wherein a drying conveying roller line is arranged in the drying box (1), wherein the drying conveying roller line is composed of two drying conveying roller groups arranged opposite to each other, wherein the drying conveying roller group is composed of a drying roller (3) arranged in the drying box (1) and heat exchange rollers located on both sides of the drying roller (3), wherein a connecting component (6) is arranged between two adjacent heat exchange rollers, and a flow guide component (7) is arranged between the two outermost heat exchange rollers, wherein the two flow guide components (7) are connected to an external coolant circulation device, and are used for coolant to flow into the heat exchange roller on one side and out of the heat exchange roller on the other side, so as to realize preheating of the paperboard to be dried on one side and cooling of the dried paperboard on the other side.

2. A drying device for bonding multi-layer paperboards according to claim 1, characterized in that: The drying box (1) is composed of a preheating chamber (101), a drying chamber (102) and a cooling chamber (103); the preheating chamber (101) and the drying chamber (102), and the drying chamber (102) and the cooling chamber (103) are connected to each other; a microwave generator (5) is arranged in the drying chamber (102) for heating paperboard.

3. A drying device for bonding multi-layer paperboards according to claim 1, characterized in that: The flow guide component (7) comprises a three-way pipe (701), one end of which passes through the drying box (1) and is connected to an external coolant circulation device, and the two ends of the three-way pipe (701) away from the external coolant circulation device are respectively rotatably connected to two corresponding heat exchange rollers.

4. A drying device for bonding multi-layer paperboards according to claim 1, characterized in that: The connecting component (6) comprises a conducting pipe (602), both ends of which are rotatably connected to corresponding heat exchange rollers, respectively, so as to enable the coolant to circulate between the external coolant circulation device and the heat exchange roller.

5. The drying device for bonding multi-layer paperboards according to claim 1, characterized in that: The drying roller (3) comprises a roller body (301) with a heating fluid, and a temperature sensor (303) and a heater (304) rotatably arranged in the roller body (301), and the temperature of the roller body (301) is controlled by the temperature sensor (303) and the heater (304).

Images