Closed high-efficiency heated humidifier that can reduce energy consumption in paperboard production lines

Abstract

The invention discloses a closed high-efficiency heating and humidifying device capable of reducing the energy consumption of a paperboard production line, comprising an outer cover and a steam humidifying device, wherein the outer cover comprises an upper cover and a lower cover, the upper cover and the lower cover are heated by themselves or provided with a heating body inside, the steam humidifying device comprises an upper steam humidifying device and a lower steam humidifying device, the upper steam humidifying device and the lower steam humidifying device are respectively arranged on the inner sides of the upper cover and the lower cover; the upper cover and the lower cover jointly enclose a heating and humidifying cavity, the heating and humidifying cavity corresponds to forming a paper threading channel between the upper cover and the lower cover, the front and rear ends between the upper cover and the lower cover are respectively a paper input port and a paper output port, and the paper threading channel is connected to the paperboard transmission path through the paper input port and the paper output port. The heating and humidifying device of the invention provides a closed cavity for the paperboard passing through, and the wet steam of the steam humidifying device is secondary heated inside the cavity to form steam with better atomization effect and higher temperature, which fills the cavity, so as to efficiently realize uniform heating and humidification of the paperboard.

Description

Technical Field

[0001] The invention relates to a paperboard heating and humidifying device, in particular to a closed high-efficiency heating and humidifying device capable of reducing the energy consumption of a paperboard production line. Background Art

[0002] See also Fig.14 As shown, it is an existing five-layer corrugated paperboard production line, which includes two first corrugating machine assemblies and a second corrugating machine assembly for outputting corrugated paper, a face paper output assembly, a gluing machine corresponding to the number of corrugating machine assemblies, and a double-sided machine for pressing corrugated paper and face paper into five-layer corrugated paperboard. The first corrugated paper output by the first corrugating machine assembly, the second corrugated paper output by the second corrugating machine assembly, and the face paper entering the double-sided machine are heated by the corresponding hot cylinders respectively. The heated first corrugated paper and the second corrugated paper enter the corresponding gluing machine for sizing and then enter the double-sided machine. The heated face paper also enters the double-sided machine together to further bond into five-layer corrugated paperboard. Since the first corrugated paper output by the first corrugating machine assembly needs to cross the second corrugating machine assembly, the transportation distance is long, resulting in serious heat and moisture loss, so heating and humidification are required. The existing heating method is mainly completed by a hot cylinder. The pit paper and the hot cylinder form a certain wrap angle for single-sided heating. If the other side needs to be heated, another hot cylinder is needed and combined with a guide roller to wrap around the other surface and heat it on another hot cylinder. Since the hot cylinder is open-type heating, heat loss is serious. Therefore, the hot cylinder needs a larger volume to store a large amount of high-temperature steam (that is, a larger power energy supply is required) to meet the heating needs.

[0003] As for humidification, the following Chinese patent number CN201921421090.6 was used to disclose a hot plate with a jet function on July 10, 2020, including a hot plate body, a steam channel is provided in the hot plate body, and a groove is provided on the surface of the hot plate body along its width direction, and a plurality of jet holes are provided in the groove, and the jet holes are connected to the steam channel. When high-temperature steam is passed into the steam channel of this hot plate with a jet function, the high-temperature steam is released through the jet holes, and the steam diffuses in the groove, so that the position of the groove has both the high temperature of the steam and the moisture of the steam. Therefore, the paper passing through the surface of the groove can be in a heated state, and can avoid excessive drying due to heating. However, this structure is only single-sided heating and humidification, and the degree of steam vaporization is not enough, the water content is high, and it is not easy to control the humidity of the paper when it is sprayed directly on the paper; in addition, it is in the shape of a plate and is in an open state, and the heat energy loss is more serious. Summary of the invention

[0004] The object of the present invention is to provide a closed high-efficiency heating and humidifying device with simple and reasonable structure, high heating and humidifying efficiency and capable of reducing the energy consumption of a paperboard production line.

[0005] The object of the present invention is achieved in that:

[0006] A closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line comprises a heating and humidifying device body arranged on a paperboard transmission path in the paperboard production line, characterized in that: the heating and humidifying device body comprises an outer cover and a steam humidifying device, the outer cover comprises an upper cover and a lower cover, the upper cover and the lower cover generate heat by themselves or are provided with a heating body on the inner side, the steam humidifying device comprises an upper steam humidifying device and a lower steam humidifying device, the upper steam humidifying device and the lower steam humidifying device are respectively arranged on the inner side of the upper cover and the lower cover; the upper cover and the lower cover jointly enclose a heating and humidifying cavity, the heating and humidifying cavity forms a paper threading channel corresponding to the upper cover and the lower cover, the front and rear ends between the upper cover and the lower cover are respectively a paper input port and a paper output port, and the paper threading channel is connected with the paperboard transmission path through the paper input port and the paper output port.

[0007] The purpose of the present invention can also be solved by the following technical measures:

[0008] As a more specific solution, the heating body includes an upper heat dissipation pipe and a lower heat dissipation pipe, and the upper heat dissipation pipe and the lower heat dissipation pipe are respectively arranged on the inner sides of the upper cover and the lower cover; the upper steam humidification device includes an upper steam pipe and an upper nozzle, and the upper nozzle is arranged on the upper steam pipe and faces the upper heat dissipation pipe; the lower steam humidification device includes a lower steam pipe and a lower nozzle, and the lower nozzle is arranged on the lower steam pipe and faces the lower heat dissipation pipe; at least one end of the upper steam pipe and the lower steam pipe extends out of the outer cover and is connected to the steam source; the upper heat dissipation pipe and the lower heat dissipation pipe are respectively connected to the high-temperature steam pipe.

[0009] As a further solution, the upper cover is composed of an upper heating plate and an upper side plate, and an upper heat medium channel pointing left and right is provided inside the upper heating plate, and the upper heat medium channel is connected with the upper heat medium channel inside the upper heating plate or through an external pipeline; the lower cover is composed of a lower heating plate and a lower side plate, and a lower heat medium channel pointing left and right is provided inside the lower heating plate, and the lower heat medium channel is connected with the lower heat medium channel inside the lower heating plate or through an external pipeline; the upper steam humidifying device includes an upper steam pipe and an upper nozzle, and the upper nozzle is arranged on the upper steam pipe and faces the upper heating plate; the lower steam humidifying device includes a lower steam pipe and a lower nozzle, and the lower nozzle is arranged on the lower steam pipe and faces the lower heating plate; at least one end of the upper steam pipe and the lower steam pipe extends out of the outer cover and is connected to the steam source; the upper heat medium channel and the lower heat medium channel are respectively connected to the high-temperature steam pipe.

[0010] As a further solution, the upper cover and the lower cover selectively generate heat and the upper steam humidifying device and the lower steam humidifying device selectively humidify.

[0011] As a further solution, the lower cover is fixed on the cross beam, a movable hinged arm is provided at one end of the upper cover, a fixed hinged arm is provided on the cross beam, and the movable hinged arm and the fixed hinged arm are hinged through a fulcrum; an opening and closing drive mechanism is provided between the other ends of the lower cover and the upper cover.

[0012] As a further solution, the opening and closing drive mechanism includes a cylinder and a hinged joint, the cylinder body of the cylinder is hinged to the cross beam, and the outer end of the piston rod of the cylinder is connected to the upper cover through the hinged joint.

[0013] As a further solution, the cardboard conveying path is a corrugated paper conveying path for conveying corrugated paper.

[0014] As a further solution, the cardboard production line is a corrugated cardboard production line with more than five layers, which includes more than two corrugating machine assemblies for outputting corrugated paper, a surface paper output assembly, a pasting machine assembly corresponding to the number of corrugating machine assemblies, and a double-sided machine for pressing corrugated paper and surface paper into corrugated cardboard with more than five layers. The corrugated paper output by at least one corrugating machine assembly passes through the paper threading channel of the heating and humidifier body and then enters the pasting machine assembly.

[0015] As a further solution, a low-power hot cylinder (the volume, steam volume and temperature can be reduced) is also provided between the heating humidifier body and the paste attachment machine.

[0016] A corrugated board processing technology, which uses closed heating and / or humidification to quickly reach the temperature and humidity required by the process before entering the gluing machine, so as to facilitate its sizing and subsequent lamination with other corrugated papers or face papers. While ensuring that the molding quality of the board remains unchanged, since the board is treated with closed heating and / or humidification, it can replace the hot cylinder or be used in combination with the hot cylinder, and its overall energy consumption is lower than that of using hot cylinder heating alone and using a humidifying device alone.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The closed high-efficiency heating and humidifying device of the present invention is applied to a corrugated cardboard production line to heat and humidify the cardboard passing through it. The heating and humidifying device provides a closed cavity for the cardboard passing through it, and the interior of the cavity or the cavity itself can be heated at high temperature. In combination with a steam pipe, wet steam is sprayed on the high-temperature heating position inside the cavity. After secondary heating, the wet steam forms steam with better atomization effect and higher temperature, which fills the cavity, thereby efficiently achieving uniform heating and humidification of the cardboard.

[0019] (2) The heating and humidification process of the present invention is carried out in a relatively closed space, which reduces energy loss and is more energy-efficient. Moreover, since the paperboard can be quickly heated and humidified, the use of hot cylinders in the corrugated paperboard production line can be reduced, or the capacity and temperature of the hot cylinder can be reduced to reduce manufacturing costs and be more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the paperboard production line in the present invention.

[0021] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0022] Figure 3 It is a right view structural schematic diagram of the present invention.

[0023] Figure 4 for Figure 3 Schematic diagram of the structure after the middle upper cover is opened and paper is inserted.

[0024] Figure 5 It is a rear view structural schematic diagram of the present invention.

[0025] Figure 6 for Figure 5 Schematic diagram of EE cross-sectional structure.

[0026] Figure 7 for Figure 6 Schematic diagram of the structure after paper penetration.

[0027] Figure 8 It is a schematic diagram of the upper cover structure of the present invention.

[0028] Fig. 9 It is a schematic diagram of the lower cover structure of the present invention.

[0029] Fig.10 It is a schematic structural diagram of another embodiment of the present invention.

[0030] Fig.11 It is a schematic diagram of the top view structure of the present invention.

[0031] Fig.12 for Fig.11 Schematic diagram of the FF cross-sectional structure.

[0032] Fig.13 for Fig.12 Schematic diagram of the structure after penetrating the pit paper.

[0033] Fig.14 This is a schematic diagram of the structure of an existing five-layer paperboard production line. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0035] Example 1, see Figures 1 to 9As shown, a closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line comprises a heating and humidifying device body 10 arranged on a paperboard transmission path in the paperboard production line, the heating and humidifying device body 10 comprises an outer cover and a steam humidifying device, the outer cover comprises an upper cover 1 and a lower cover 2, the upper cover 1 and the lower cover 2 generate heat by themselves or are provided with a heating body inside, the steam humidifying device comprises an upper steam humidifying device and a lower steam humidifying device, the upper steam humidifying device and the lower steam humidifying device are respectively arranged on the inner sides of the upper cover 1 and the lower cover 2; the upper cover 1 and the lower cover 2 jointly enclose a heating and humidifying cavity, the heating and humidifying cavity forms a paper threading channel corresponding to the upper cover 1 and the lower cover 2, the front and rear ends between the upper cover 1 and the lower cover 2 are respectively a paper input port A and a paper output port B, and the paper threading channel is connected with the paperboard transmission path through the paper input port A and the paper output port B.

[0036] The heating body includes an upper heat dissipation pipe 7 and a lower heat dissipation pipe 3, which are respectively arranged on the inner sides of the upper cover 1 and the lower cover 2; the upper steam humidifying device includes an upper steam pipe 8 and an upper nozzle 81, which is arranged on the upper steam pipe 8 and faces the upper heat dissipation pipe 7; the lower steam humidifying device includes a lower steam pipe 4 and a lower nozzle 41, which is arranged on the lower steam pipe 4 and faces the lower heat dissipation pipe 3; at least one end of the upper steam pipe 8 and the lower steam pipe 4 extends out of the outer cover and is connected to the steam source; the upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 are respectively connected to the high-temperature steam pipe.

[0037] The upper cover 1 and the lower cover 2 selectively heat up and work, and the upper steam humidifying device and the lower steam humidifying device selectively humidify and work.

[0038] The lower cover 2 is fixedly arranged on the cross beam 6, a movable hinged arm 12 is arranged at one end of the upper cover 1, a fixed hinged arm 61 is arranged on the cross beam 6, the movable hinged arm 12 and the fixed hinged arm 61 are hingedly connected through a fulcrum 11; an opening and closing drive mechanism is arranged between the other ends of the lower cover 2 and the upper cover 1.

[0039] The opening and closing driving mechanism comprises a cylinder and a hinged joint, the cylinder body of the cylinder is hinged to the cross beam 6, and the outer end of the piston rod of the cylinder is connected to the upper cover 1 through the hinged joint.

[0040] The working principle of the above-mentioned closed high-efficiency heated humidifier is: Figure 4, the upper cover 1 is controlled by the cylinder 5 to be turned up to a certain angle to facilitate the insertion of the paperboard C (the paperboard in this embodiment is corrugated paper), and then the upper cover 1 is controlled by the cylinder 5 to be closed again, but a certain distance is kept between the upper cover 1 and the lower cover 2 to form a paper-penetrating channel and avoid pressing the paperboard. High-temperature and high-pressure steam is introduced into the upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 to increase the surface temperature of the pipes; hot steam with a large water content is introduced into the upper steam pipe 8 and the lower steam pipe 4, and is uniformly sprayed through the nozzle and sprayed onto the surface of the upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 respectively. The sprayed steam is heated by the surface of the heat dissipation pipe to form steam with better atomization effect and higher temperature, and fills the entire inner cavity to heat and humidify the paperboard passing through the inner part of the outer cover.

[0041] Further, the upper steam pipe 8 and the lower steam pipe 4 can be connected to a steam source with high water content through a first electric control valve and a second electric control valve (not shown in the figure). By adjusting the first electric control valve and the second electric control valve, the steam output of the upper steam pipe 8 and the lower steam pipe 4 can be controlled respectively, so as to achieve the purpose of adjusting the temperature and humidity of the upper and lower sides of the cavity D. The upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 can be connected to a high-temperature and high-pressure steam source through a third electric control valve and a fourth electric control valve (not shown in the figure). By adjusting the third electric control valve and the fourth electric control valve, the heat of the upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 can be controlled respectively, so as to further adjust the temperature and adjust the evaporation state of the water vapor sprayed from the nozzle. Since the steam humidity, temperature, steam volume and water content of the upper steam pipe 8, the lower steam pipe 4, the upper heat dissipation pipe 7 and the lower heat dissipation pipe 3 are respectively adjustable, the temperature and humidity of the cavities corresponding to the upper and lower sides of the paper threading channel can be adjusted respectively.

[0042] The paperboard conveying path is a corrugated paper conveying path 40 for conveying corrugated paper.

[0043] The paperboard production line is a five-layer corrugated paperboard production line, which includes a first corrugator assembly 20, a second corrugator assembly 50, a face paper output assembly 60, a gluing machine assembly and a double-sided machine 90 arranged in a transverse order, and the gluing machine assembly includes a first gluing machine 80 and a second gluing machine arranged in an upper and lower manner. The corrugated paper C output by the first corrugator assembly 20 is led to the top of the second corrugator assembly 50 by a traction machine 30, and is transported to a position close to the gluing machine assembly through a corrugated paper transmission path 40; since the corrugated paper passes through a long path, its heat and humidity will be reduced. At this time, by passing the corrugated paper C through the heating and humidifying body 10, closed double-sided heating and humidification of the corrugated paper C can be achieved, achieving the effect of rapid heating and humidification.

[0044] Two sets of heat cylinders 701 and 702 may be further provided between the heating and humidifying device body 10 and the first pasting machine 80, and the two sets of heat cylinders further heat the two sides of the corrugated paper respectively.

[0045] The double-face machine 90 includes a hot plate portion 901 and a driving portion 902. The hot plate portion 901 is used to press the corrugated paper and the face paper into shape, and the driving portion 902 is used to provide output power for the formed corrugated paperboard.

[0046] The difference between the second embodiment and the first embodiment is: Figures 10 to 13 As shown, the upper cover 1 is composed of an upper hot plate 13 and an upper side plate 14, and an upper heat medium channel 15 pointing left and right is provided inside the upper hot plate 13, and the upper heat medium channel 15 is connected with the upper heat medium channel 15 inside the upper hot plate 13; the lower cover 2 is composed of a lower hot plate 22 and a lower side plate 21, and a lower heat medium channel 23 pointing left and right is provided inside the lower hot plate 22, and the lower heat medium channel 23 is connected with the lower heat medium channel 23 inside the lower hot plate 22; the upper steam humidifying device includes an upper steam pipe 8 and an upper nozzle 81, and the upper nozzle 81 is arranged on the upper steam pipe 8 and faces the upper hot plate 13; the lower steam humidifying device includes a lower steam pipe 4 and a lower nozzle 41, and the lower nozzle 41 is arranged on the lower steam pipe 4 and faces the lower hot plate 22; at least one end of the upper steam pipe 8 and the lower steam pipe 4 extends out of the outer cover and is connected to the steam source; the upper heat medium channel 15 and the lower heat medium channel 23 are respectively connected to the high-temperature steam pipe. Specifically, the heat medium channel 15 is formed by drilling holes on the steel plate, and a connecting groove 16 is provided between the two heat medium channels 15 that need to be connected at the end of the steel plate. Finally, an embedded plate 17 is welded at the end of the steel plate to seal the outside of the connecting groove 16. The heat medium channels 15 at both ends retain a port leading to the outside of the heating cover and connecting with the high-temperature and high-pressure steam source, wherein the heat medium channel 15 of the upper heating cover 1 is connected with the high-temperature and high-pressure steam source through the upper connector 71, and the lower cover 2 is connected with the high-temperature and high-pressure steam source through the lower connector 31.

[0047] A corrugated board processing technology, which uses closed heating and / or humidification to quickly reach the temperature and humidity required by the process before the corrugated paper enters the gluing machine, so as to facilitate its sizing and subsequent lamination with other corrugated paper or surface paper.

[0048] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line, comprising a heating and humidifying device body (10) arranged on a paperboard transmission path in the paperboard production line, characterized in that: The heating humidifier body (10) comprises an outer cover and a steam humidifying device, the outer cover comprises an upper cover (1) and a lower cover (2), the upper cover (1) and the lower cover (2) are self-heating or have a heating body inside, the steam humidifying device comprises an upper steam humidifying device and a lower steam humidifying device, the upper steam humidifying device and the lower steam humidifying device are respectively arranged on the inner side of the upper cover (1) and the lower cover (2); the upper cover (1) and the lower cover (2) together enclose a heating and humidifying chamber, the heating and humidifying chamber forms a paper threading channel between the upper cover (1) and the lower cover (2), the front and rear ends between the upper cover (1) and the lower cover (2) are respectively a paper input port (A) and a paper output port (B), and the paper threading channel is connected to the paperboard transmission path through the paper input port (A) and the paper output port (B); The heating element comprises an upper heat dissipation pipe (7) and a lower heat dissipation pipe (3), the upper heat dissipation pipe (7) and the lower heat dissipation pipe (3) being arranged on the inner sides of the upper cover (1) and the lower cover (2), respectively; the upper steam humidifying device comprises an upper steam pipe (8) and an upper nozzle (81), the upper nozzle (81) being arranged on the upper steam pipe (8) and facing the upper heat dissipation pipe (7); the lower steam humidifying device comprises a lower steam pipe (4) and a lower nozzle (41), the lower nozzle (41) being arranged on the lower steam pipe (4) and facing the lower heat dissipation pipe (3); at least one end of the upper steam pipe (8) and the lower steam pipe (4) extends out of the outer cover and is connected to a steam source; the upper heat dissipation pipe (7) and the lower heat dissipation pipe (3) are respectively connected to a high-temperature steam pipe.

2. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 1, characterized in that: The upper cover (1) is composed of an upper heating plate (13) and an upper side plate (14); an upper heat medium channel (15) pointing leftward and rightward is provided inside the upper heating plate (13); the upper heat medium channel (15) and the upper heat medium channel (15) are connected in series inside the upper heating plate (13) or through an external pipeline; the lower cover (2) is composed of a lower heating plate (22) and a lower side plate (21); a lower heat medium channel (23) pointing leftward and rightward is provided inside the lower heating plate (22); the lower heat medium channel (23) and the lower heat medium channel (23) are connected in series inside the lower heating plate (22) or through an external pipeline. The external pipelines are connected in series; the upper steam humidifying device comprises an upper steam pipe (8) and an upper nozzle (81), the upper nozzle (81) being arranged on the upper steam pipe (8) and facing the upper hot plate (13); the lower steam humidifying device comprises a lower steam pipe (4) and a lower nozzle (41), the lower nozzle (41) being arranged on the lower steam pipe (4) and facing the lower hot plate (22); at least one end of the upper steam pipe (8) and the lower steam pipe (4) extends out of the outer cover and is connected to a steam source; the upper heat medium channel (15) and the lower heat medium channel (23) are respectively connected to the high-temperature steam pipe.

3. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 1 or 2, characterized in that: The upper cover (1) and the lower cover (2) selectively generate heat and work, and the upper steam humidifying device and the lower steam humidifying device selectively humidify and work.

4. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 1 is characterized in that: The lower cover (2) is fixedly arranged on the cross beam (6); one end of the upper cover (1) is provided with a movable hinged arm (12); the cross beam (6) is provided with a fixed hinged arm (61); the movable hinged arm (12) and the fixed hinged arm (61) are hingedly connected via a fulcrum (11); an opening and closing drive mechanism is provided between the other ends of the lower cover (2) and the upper cover (1).

5. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 4 is characterized in that: The opening and closing drive mechanism comprises a cylinder and a hinged joint, the cylinder body of the cylinder is hinged to the cross beam (6), and the outer end of the piston rod of the cylinder is connected to the upper cover (1) via the hinged joint.

6. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 1 is characterized in that: The paperboard transmission path is a corrugated paper transmission path (40) for transmitting corrugated paper.

7. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 6, characterized in that: The paperboard production line is a corrugated paperboard production line with more than five layers, comprising more than two corrugating machine assemblies for outputting corrugated paper, a face paper output assembly (60), a gluing machine assembly corresponding to the number of corrugating machine assemblies, and a double-face machine (90) for pressing corrugated paper and face paper into corrugated paperboard with more than five layers, wherein the corrugated paper output by at least one corrugating machine assembly passes through the paper threading channel of the heating and humidifying device body (10) and then enters the gluing machine assembly.

8. The closed high-efficiency heating and humidifying device capable of reducing energy consumption of a paperboard production line according to claim 7, characterized in that: A low-power hot cylinder is also provided between the heating and humidifying device body (10) and the paste attachment machine.

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