Heating device

Abstract

The utility model discloses a heating device, which belongs to the technical field of paperboard processing equipment, and comprises a shell, at least a first partition plate, a first pipe assembly and a second pipe assembly, the shell is provided with a heating chamber, an input end and an output end, and the input end, the heating chamber and the output end are communicated in sequence; the first partition plate divides the heating chamber into a first heating cavity and a second heating cavity, and the first heating cavity and the second heating cavity communicate with the output end. The first heating cavity forms a first heating section, and the first heating cavity and the second heating cavity form a second heating section; the first pipe assembly is communicated with the first heating cavity, and the second pipe assembly is communicated with the second heating cavity. According to the heating device, the first pipe assembly can be started or the first pipe assembly and the second pipe assembly can be started at the same time according to paperboards of different specifications, the paperboards of the first specification are heated through the first heating section, the paperboards of the second specification are heated through the second heating section, and the adaptability of the heating device to heating the paperboards of different specifications is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to paperboard processing equipment's technical field, and especially a kind of heating device. BACKGROUND

[0002] Packaging materials such as carton are very widely used, and the paperboard used for carton needs to be laminated together when being made, and glue is used in the lamination, and the laminated paper is pressed by pressing plate, and the laminated paper is pressed and heated when passing through the pressing plate, and the glue laminates the laminated paper.

[0003] Generally, heating device is used to heat the laminated paper, and the existing heating device can only heat the paperboard of the same specification, and different specifications of paperboard need to use different types of heating device. Therefore, the existing heating device cannot adapt to heat different specifications of paperboard. SUMMARY

[0004] The utility model aims at improving the problem that the existing heating device cannot adapt to heat different specifications of paperboard, and provides a kind of heating device.

[0005] The technical scheme for realizing the above-mentioned purpose includes the following:

[0006] The heating device comprises:

[0007] The shell has a heating chamber, an input end and an output end, and the input end, the heating chamber and the output end are sequentially communicated;

[0008] At least a first partition plate is installed in the shell and separates the heating chamber to form a first heating cavity and a second heating cavity, and the first heating cavity and the second heating cavity are respectively communicated with the output end; the first heating cavity forms a first heating section, and the first heating cavity and the second heating cavity form a second heating section;

[0009] At least a first pipe assembly and a second pipe assembly are communicated with the first heating cavity and the second heating cavity respectively.

[0010] In one embodiment, the first partition plate has two pieces, and the first heating cavity is formed between the two pieces of first partition plate;

[0011] Two second heating cavities are formed between the two pieces of first partition plate and the inner walls of the two ends of the shell, and the two second heating cavities are respectively arranged on the two sides of the first heating section, and the two second heating cavities form the second heating section with the first heating cavity.

[0012] In one embodiment, the first pipe assembly comprises a first input pipe and a first output pipe, and the first input pipe and the first output pipe are both installed in the shell, and the middle sections of the first input pipe and the first output pipe are communicated;

[0013] The first output pipe has an output hole, and the output hole of the first output pipe is communicated with the first heating cavity.

[0014] In one embodiment, the second pipe assembly includes a second input pipe and a second output pipe, both of which are installed in the shell, and the second input pipe is communicated with the middle section of the second output pipe.

[0015] The two ends of the second output pipe have output holes, and the output holes of the two ends of the second output pipe are respectively communicated with two second heating cavities.

[0016] The output hole of the first output pipe is staggered with the output hole of the second output pipe, and the output hole of the first output pipe is located in the first heating cavity, the output hole of the second output pipe is located in the second heating cavity, and the output hole of the first output pipe is located between the two second heating cavities.

[0017] In one embodiment, the first partition plate is provided with a plurality of through holes for the first input pipe, the first output pipe, the second input pipe and the second output pipe.

[0018] The first pipe assembly has a first three-way joint, and the second pipe assembly has a second three-way joint, the middle section of the first output pipe is connected with the middle section of the first output pipe through the first three-way joint, and the middle section of the second output pipe is connected with the middle section of the second output pipe through the second three-way joint.

[0019] The two ends of the first input pipe and the second input pipe form input ends.

[0020] In one embodiment, it further includes a third pipe assembly and two second partition plates, the two second partition plates are installed in the shell, and the second heating cavity is formed between the first partition plate and the second partition plate; two third heating cavities are formed between the two second partition plates and the inner walls of the two ends of the shell, and the third pipe assembly is communicated with the two third heating cavities respectively.

[0021] The two third heating cavities are respectively arranged on the two sides of the second heating section, and the two third heating cavities, the two second heating cavities and the first heating cavity form a third heating section.

[0022] In one embodiment, it further includes a fourth pipe assembly and two third partition plates, the two third partition plates are installed in the shell, and the third heating cavity is formed between the second partition plate and the third partition plate; two fourth heating cavities are formed between the two third partition plates and the inner walls of the two ends of the shell, and the fourth pipe assembly is communicated with the two fourth heating cavities respectively.

[0023] The two fourth heating cavities are respectively arranged on the two sides of the third heating section, and the two fourth heating cavities, the two third heating cavities, the two second heating cavities and the first heating cavity form a fourth heating section.

[0024] In one embodiment, the shell comprises a first shell, a second shell mounted on the first shell, and a heating chamber formed between the inner wall of the second shell and the inner wall of the first shell; one side of the second shell is inclined and provided with a plurality of air outlet holes, the plurality of air outlet holes are located on the output end of the shell and communicate with the first heating cavity and the second heating cavity.

[0025] In one embodiment, the shell further has a baffle extending along the length direction of the shell; the baffle is mounted on the second shell and arranged close to the output end, and the baffle is located above the output hole.

[0026] In one embodiment, the heating device further has a drain pipe mounted on the bottom of the shell, the drain pipe is at least partially arranged in the first heating cavity and the second heating cavity, the bottom wall of the drain pipe is provided with a water inlet hole, the water inlet hole is attached to the bottom of the shell; the water inlet hole respectively communicates with the first heating cavity or the second heating cavity, and the end of the drain pipe has a water outlet, which communicates with the water inlet hole.

[0027] The technical scheme provided by the utility model has the following advantages and effects:

[0028] The first specification paperboard is placed in the first heating section, the width of the first heating section corresponds to the first specification paperboard, the first pipe assembly is started, the hot air of the first pipe assembly enters the first heating cavity through the input end, and the hot air of the first heating cavity heats the paperboard of the first heating section through the output end. The second specification paperboard is placed in the second heating section, and the first pipe assembly and the second pipe assembly are started at the same time, the width of the second specification paperboard is greater than that of the first specification paperboard, the hot air of the first pipe assembly enters the first heating cavity through the input end, the hot air of the second pipe assembly enters the second heating cavity through the input end, and the hot air of the first heating cavity and the hot air of the second heating cavity heat the paperboard of the second heating section through the output end. Therefore, the heating device can start the first pipe assembly or start the first pipe assembly and the second pipe assembly at the same time according to different specifications of paperboard, heat the first specification paperboard in the first heating section and heat the second specification paperboard in the second heating section, and improve the adaptability of the heating device to different specifications of paperboard. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings herein show specific examples of the technical scheme of the utility model and constitute part of the specification together with the specific embodiments, for explaining the technical scheme, principle and effect of the utility model.

[0030] Unless otherwise specified or defined, the same reference signs in different drawings represent the same or similar technical features, and different reference signs may also be used to represent the same or similar technical features.

[0031] Figure 1 is a schematic view of a traction machine in an embodiment of the present application;

[0032] Figure 2 is a sectional view of the traction machine in an embodiment of the present application;

[0033] Figure 3 is a schematic view of a heating device in an embodiment of the present application;

[0034] Figure 4 is a sectional view of the heating device in an embodiment of the present application Figure 1 ;

[0035] Figure 5 is a sectional view of the heating device in an embodiment of the present application Figure 2 ;

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 100, heating device;

[0038] 1, first pipe assembly; 11, first input pipe; 12, first output pipe; 10, first heating section; 20, second heating section; 30, third heating section; 40, fourth heating section; 15, input end; 16, first tee joint; 17, second tee joint;

[0039] 2, second pipe assembly; 21, second input pipe; 22, second output pipe; 221, output hole;

[0040] 3, shell; 301, first partition; 3011, through hole; 302, second partition; 303, third partition;

[0041] 31, first heating cavity; 32, second heating cavity; 33, third heating cavity; 34, fourth heating cavity; 35, output end; 36, first shell; 37, second shell; 38, baffle; 39, heating chamber;

[0042] 4, third pipe assembly; 41, third input pipe; 42, third output pipe;

[0043] 5, fourth pipe assembly; 51, fourth input pipe; 52, fourth output pipe;

[0044] 6, drain pipe;

[0045] 7, support. DETAILED DESCRIPTION

[0046] In order to facilitate understanding of the present application, the specific embodiments of the present application will be described in more detail below with reference to the drawings of the specification.

[0047] Unless specifically stated or otherwise as used herein, "first," "second," or other such designation of an element does not limit the quantity, number, or order of elements.

[0048] Unless specifically stated or otherwise as used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0049] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly fixed to the other element or intervening elements can also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present; when an element is referred to as being "mounted" to another element, it can be directly mounted to the other element or intervening elements can also be present. When an element is referred to as being "disposed" in another element, it can be directly disposed in the other element or intervening elements can also be present.

[0050] The utility model provides a kind of heating device 100, as shown in Figures 1 to 5 It includes shell 3, at least first partition 301, first pipe assembly 1, second pipe assembly 2, shell 3 has heating chamber 39, input end 15, output end 35, input end 15, heating chamber 39, output end 35 are sequentially communicated;First partition 301 is installed in shell 3, and heating chamber 39 is separated to form first heating cavity 31, second heating cavity 32, first heating cavity 31, second heating cavity 32 are communicated with output end 35 respectively;First heating cavity 31 constitutes first heating section 10, first heating cavity 31 and second heating cavity 32 constitute second heating section 20;First pipe assembly 1 is communicated with first heating cavity 31, and second pipe assembly 2 is communicated with second heating cavity 32.

[0051] Specifically, the paperboard of the first specification is placed in the first heating section 10, the width of the first heating section 10 corresponds to the width of the paperboard of the first specification, the first pipe assembly 1 is started, the hot gas of the first pipe assembly 1 enters the first heating cavity 31 through the input end 15, and the hot gas of the first heating cavity 31 heats the paperboard of the first heating section 10 through the output end 35. The paperboard of the second specification is placed in the second heating section 20, and the first pipe assembly 1 and the second pipe assembly 2 are started at the same time, the width of the paperboard of the second specification is greater than the width of the paperboard of the first specification, the hot gas of the first pipe assembly 1 enters the first heating cavity 31 through the input end 15, the hot gas of the second pipe assembly 2 enters the second heating cavity 32 through the input end 15, and the hot gas of the first heating cavity 31 and the hot gas of the second heating cavity 32 heat the paperboard of the second heating section 20 through the output end 35. Therefore, the heating device 100 can start the first pipe assembly 1 or start the first pipe assembly 1 and the second pipe assembly 2 at the same time according to different specifications of the paperboard, realize that the first heating section 10 heats the paperboard of the first specification, and the second heating section 20 heats the paperboard of the second specification, and improve the adaptability of the heating device 100 to heat paperboards of different specifications.

[0052] Preferably, the two sides of the shell 3 are provided with support members 7, and the shell 3 is installed on the workbench through the support members 7, thereby improving the stability of the shell 3.

[0053] In some embodiments, the first partition 301 has two pieces, and the first heating cavity 31 is formed between the two pieces of the first partition 301, and the first heating cavity 31 constitutes the first heating section 10; one piece of the first partition 301 and the inner wall of the shell 3 form two second heating cavities 32, and the other piece of the first partition 301 and the inner wall of the shell 3 form two second heating cavities 32, and the two second heating cavities 32 are arranged on the two sides of the first heating section 10, and the two second heating cavities 32 and the first heating cavity 31 constitute the second heating section 20.

[0054] Specifically, two pieces of the first partition 301 are arranged in the shell 3, and the heating chamber 39 is separated to form a first heating cavity 31 and two second heating cavities 32, and the two second heating cavities 32 are located at the two ends of the first heating cavity 31; when the second pipe assembly 2 is operated, the two ends of the second pipe assembly 2 respectively input hot gas to the two second heating cavities 32, and the two second heating cavities 32 and the first heating cavity 31 output hot gas to heat the paperboard in the same direction. Arranging two pieces of the first partition 301 can increase the length of the second heating section 20; when only the first heating cavity 31 and one second heating cavity 32 are combined to heat the paperboard, any one end of the second pipe assembly 2 can be closed, thereby further improving the adaptability of the heating device 100 to heat paperboards of different specifications.

[0055] Preferably, as shown in FIG. 1, the heating device 100 comprises a first pipe assembly 1 and a second pipe assembly 2, and the first pipe assembly 1 and the second pipe assembly 2 are arranged in the shell 3. Figure 2 and Figure 3As shown, the first pipe assembly 1 comprises a first input pipe 11, a first output pipe 12, and a first tee joint 16, the first input pipe 11 and the first output pipe 12 are both installed in the shell 3, the middle section of the first input pipe 11 communicates with the middle section of the first output pipe 12 through the first tee joint 16, and the two ends of the first input pipe 11 form an input end 15; the two ends of the first output pipe 12 have output holes 221, and the output holes 221 at the two ends of the first output pipe 12 communicate with the first heating cavity 31. It should be noted that the middle section of the first input pipe 11 and the first output pipe 12 is not absolutely the center, which can be understood as the position close to the center of the first input pipe 11 or the first output pipe 12.

[0056] Specifically, the heating source of the first pipe assembly 1 heats air and inputs the air into the first input pipe 11 through the input end 15, the first input pipe 11 communicates with the first output pipe through the first tee joint 16, the hot gas of the first output pipe 12 enters the first heating cavity 31 through the output holes 221, and the paperboard in the first heating section 10 is heated. Moreover, the two ends of the first input pipe 11 can be connected to the heating source, or one end is connected to the heating source, when one end is connected to the heating source, the other end of the first input pipe 11 will be closed, and the hot gas flows in the first input pipe 11, because the gas temperature of the first input pipe 11 and the first output pipe 12 is high, the air expands, and the pressure difference between the inside and outside of the first input pipe 11 and the first output pipe 12 is generated, which pushes the hot gas to flow quickly in the first input pipe 11 and the first output pipe 12, improves the efficiency of the hot gas flow, makes the gas in the first heating cavity 31 quickly sprayed from the output end 35, improves the gas flow of the output end 35, and improves the heating efficiency of the processed paperboard.

[0057] Preferably, as Figure 2 and Figure 3As shown, the second pipe assembly 2 comprises a second input pipe 21, a second output pipe 22, and a second tee joint 17, the second input pipe 21 and the second output pipe 22 are both installed in the housing 3, the middle section of the second input pipe 21 communicates with the middle section of the second output pipe 22 through the second tee joint 17, and the two ends of the second input pipe 21 form the input end 15; the two ends of the second output pipe 22 have output holes 221, and the output holes 221 at the two ends of the second output pipe 22 respectively communicate with two second heating cavities 32; the output holes 221 of the first output pipe 12 and the output holes 221 of the second output pipe 22 are staggered, and the output holes 221 of the first output pipe 12 are located in the first heating cavity 31, the output holes 221 of the second output pipe 22 are located in the second heating cavity 32, and the output holes 221 of the first output pipe 12 are located between the two second heating cavities 32. Specifically, the heating source of the second pipe assembly 2 heats air and inputs the air into the second input pipe 21 through the input end 15, the second input pipe 21 communicates with the second output pipe 22 through the second tee joint 17, and the hot air at the two ends of the second output pipe 22 enters the two second heating cavities 32 through the output holes 221, the two second heating cavities 32 are combined with the first heating cavity 31 to heat the paperboard in the second heating section 20.

[0058] Preferably, as Figure 4 As shown, the first partition plate 301 is provided with a plurality of through holes 3011 for the first input pipe 11, the first output pipe 12, the second input pipe 21, and the second output pipe 22 to pass through. Specifically, the through holes 3011 are provided for the first input pipe 11, the first output pipe 12, the second input pipe 21, and the second output pipe 22 to pass through, which facilitates the parallel arrangement of the first input pipe 11, the first output pipe 12, the second input pipe 21, and the second output pipe 22, makes full use of the space in the housing 3, and the structure layout is more reasonable; moreover, the first heating cavity 31 and the second heating cavity 32 are separated by the first partition plate 301, and the first heating cavity 31 and the second heating cavity 32 are relatively independent, when the first pipe assembly 1 is working, the hot air in the first heating cavity 31 heats the paperboard in the first heating section 10, when the first pipe assembly 1 and the second pipe assembly 2 work at the same time, the hot air in the second heating cavity 32 and the first heating cavity 31 heats the paperboard in the second heating section 20.

[0059] Further, as Figure 2As shown, the heating device 100 further comprises a third pipe assembly 4, two second partitions 302 installed in the shell 3, and a second heating cavity 32 formed between the first partition 301 and the second partition 302; one of the second partitions 302 and the inner wall of the shell 3 form a third heating cavity 33, and the other second partition 302 and the inner wall of the shell 3 form another third heating cavity 33, and the third pipe assembly 4 is in communication with the two third heating cavities 33; the two third heating cavities 33 are arranged on the two sides of the second heating section 20, and the two third heating cavities 33, the two second heating cavities 32, and the first heating cavity 31 form a third heating section 30. Specifically, the two second partitions 302 and the two first partitions 301 are installed in the shell 3, so that the shell 3 is divided into a first heating cavity 31, two second heating cavities 32, and two third heating cavities 33; the first pipe assembly 1 acts on the first heating cavity 31, the second pipe assembly 2 acts on the second heating cavity 32, and the third pipe assembly 4 acts on the third heating cavity 33; the first heating cavity 31, the second heating cavity 32, and the third heating cavity 33 are combined to form heating sections of different widths, thereby further improving the adaptability of the heating device 100.

[0060] Preferably, as shown in the drawings, Figure 2 As shown, the heating device 100 further comprises a fourth pipe assembly 5, two third partitions 303 installed in the shell 3, and a third heating cavity 33 formed between the second partition 302 and the third partition 303; one of the third partitions 303 and the inner wall of the shell 3 form a fourth heating cavity 34, and the other third partition 303 and the inner wall of the shell 3 form another fourth heating cavity 34, and the fourth pipe assembly 5 is in communication with the two fourth heating cavities 34; the two fourth heating cavities 34 are arranged on the two sides of the third heating section 30, and the two fourth heating cavities 34, the two third heating cavities 33, the two second heating cavities 32, and the first heating cavity 31 form a fourth heating section 40. The technical effects of the multiple pipe assemblies and the multiple partitions are described in detail in the embodiment, and will not be repeated here.

[0061] Preferably, the third pipe assembly 4 comprises a third input pipe 41 and a third output pipe 42, the fourth pipe assembly 5 comprises a fourth input pipe 51 and a fourth output pipe 52, the fourth pipe assembly 5, the third pipe assembly 4, the second pipe assembly 2, and the first pipe assembly 1 are installed in the same way, and the fourth pipe assembly 5 and the third pipe assembly 4 are installed in the same way as the second pipe assembly 2 and the first pipe assembly 1, which will not be repeated here.

[0062] In some embodiments, as shown in the drawings, Figure 3As shown, the shell 3 comprises a first shell 36, a second shell 37 mounted on the first shell 36, and a heating chamber 39 formed between the inner wall of the second shell 37 and the inner wall of the first shell 36. One side of the second shell 37 is inclined and provided with a plurality of air outlet holes, which are located on the output end 35 of the shell 3 and communicate with the first heating cavity 31 and the second heating cavity 32. Specifically, the two ends of the first shell 36 are respectively attached to the two ends of the second shell 37 to form a sealed heating chamber 39. The plurality of air outlet holes are arranged on the inclined side of the second shell 37, so that the hot air of the first heating section 10, the second heating section 20, the third heating section 30 and the fourth heating section 40 is inclined upward and sprayed onto the paperboard, and the heating direction of the output end 35 is aligned with the paperboard.

[0063] In addition, the plurality of air outlet holes arranged on the output end 35 can reduce the amount of gas at the output end 35, thereby increasing the gas speed at the output end 35, so that the hot air can be sprayed onto the paperboard to increase the spraying distance of the hot air.

[0064] Preferably, as shown in Figure 3 As shown, the shell 3 further has a baffle 38 extending along the length direction of the shell 3. The baffle 38 is mounted on the second shell 37 and arranged close to the output end 35, and located above the air outlet holes. Specifically, the baffle 38 is arranged above the air outlet holes to block the hot air of the air outlet holes, so that the hot air of the output end 35 is heated towards the paperboard, avoiding the hot air of the output end 35 from diffusing too early and avoiding the paperboard from being unable to be heated concentratedly.

[0065] Preferably, as shown in Figure 1 and Figure 3 As shown, the heating device 100 further has a drain pipe 6 mounted on the bottom of the shell 3. The drain pipe 6 is at least partially arranged in the first heating cavity 31 and the second heating cavity 32. The bottom wall of the drain pipe 6 is provided with a water inlet hole which is attached to the bottom of the shell 3. The water inlet hole communicates with the first heating cavity 31 or the second heating cavity 32. The end of the drain pipe 6 has a water outlet which communicates with the water inlet hole. Specifically, when the heating device 100 is working, the pipe assembly outputs hot air to the input pipe 11 and the output pipe 12. The hot air will be cooled in the continuous flow, resulting in a certain temperature difference between the inside and outside of the first heating cavity 31, the second heating cavity 32, the third heating cavity 33 and the fourth heating cavity 34. This temperature difference will cause air to condense and form water droplets, which will deposit on the bottom of the shell 3. The water droplets enter the drain pipe 6 through the plurality of water inlet holes and are discharged from the water outlet of the drain pipe 6. In this way, the condensate water can be prevented from accumulating in the shell 3, and the heating effect of the heating device 100 can be avoided.

[0066] When referring to the drawings, new features appearing in the drawings are explained; in order to avoid the description being less concise due to repeated reference to the drawings, features already described are not referred to again in the drawings where the description is clear.

[0067] The purpose of the above examples is to exemplarily reproduce and deduce the technical solutions of the present application, and to completely describe the technical solutions, purposes and effects of the present application, so as to make the public more thoroughly and comprehensively understand the disclosure of the present application, and not to limit the protection scope of the present application.

[0068] The above examples are not exhaustive based on the present application, and there can be many other unlisted embodiments. Any replacement and improvement made without violating the concept of the present application shall fall within the protection scope of the present application.

Claims

1. Heating device, characterized in that The utility model relates to a heating device, including: A shell has a heating chamber, an input end, an output end, and the input end, the heating chamber, the output end are communicated in proper order; At least a first baffle is installed in the shell and separates the heating chamber to form a first heating cavity and a second heating cavity, which are respectively communicated with the output end; The first heating cavity forms a first heating section, and the first heating cavity and the second heating cavity form a second heating section; At least a first pipe assembly and a second pipe assembly, the first pipe assembly is communicated with the first heating cavity, and the second pipe assembly is communicated with the second heating cavity.

2. The heating device of claim 1, wherein The first baffle has two pieces, and the first heating cavity is formed between the two pieces of the first baffle; Two second heating cavities are formed between the two pieces of the first baffle and the inner walls of the two ends of the shell, and the two second heating cavities are respectively arranged on the two sides of the first heating section, and the two second heating cavities form the second heating section with the first heating cavity.

3. The heating device of claim 2, wherein, The first pipe assembly includes a first input pipe and a first output pipe, and the first input pipe and the first output pipe are both installed in the shell, and the middle sections of the first input pipe and the first output pipe are communicated; The first output pipe has an output hole, and the output hole of the first output pipe is communicated with the first heating cavity.

4. The heating device of claim 3, wherein The second pipe assembly includes a second input pipe and a second output pipe, and the second input pipe and the second output pipe are both installed in the shell, and the middle sections of the second input pipe and the second output pipe are communicated; The two ends of the second output pipe have output holes, and the output holes of the two ends of the second output pipe are respectively communicated with the two second heating cavities; The output hole of the first output pipe and the output hole of the second output pipe are staggered, and the output hole of the first output pipe is located in the first heating cavity, and the output hole of the second output pipe is located in the second heating cavity, and the output hole of the first output pipe is located between the two second heating cavities.

5. The heating device of claim 4, wherein The first baffle is provided with a plurality of through holes for the first input pipe, the first output pipe, the second input pipe and the second output pipe to pass through; The first pipe assembly has a first three-way joint, the second pipe assembly has a second three-way joint, the middle section of the first output pipe is connected with the middle section of the first output pipe through the first three-way joint, and the middle section of the second output pipe is connected with the middle section of the second output pipe through the second three-way joint; The two ends of the first input pipe and the second input pipe form the input end.

6. The heating device of claim 2, wherein It also includes a third pipe assembly, two second baffles, the first baffle and the second baffle form the second heating cavity, two third heating cavities are formed between the two second baffles and the inner walls of the two ends of the shell, and the third pipe assembly is respectively communicated with the two third heating cavities; The two third heating cavities are respectively arranged on the two sides of the second heating section, and the two third heating cavities, the two second heating cavities and the first heating cavity form a third heating section.

7. The heating device of claim 6, wherein It also includes a fourth pipe assembly and two third baffles, the second baffle and the third baffle form the third heating cavity, two fourth heating cavities are formed between the two third baffles and the inner walls of the two ends of the shell, and the fourth pipe assembly is respectively communicated with the two fourth heating cavities. Two fourth heating cavities are arranged at two sides of the third heating section respectively, the two fourth heating cavities, the two third heating cavities, the two second heating cavities and the first heating cavity form a fourth heating section.

8. The heating device of claim 2, wherein, The shell comprises a first shell and a second shell, the second shell is mounted on the first shell, and a heating chamber is formed between the inner wall of the second shell and the inner wall of the first shell; one side of the second shell is arranged obliquely and is provided with a plurality of air outlet holes, the plurality of air outlet holes are located on the output end of the shell, and the plurality of air outlet holes are respectively communicated with the first heating cavity and the second heating cavity.

9. The heating device of claim 8, wherein, The shell is also provided with a baffle, the baffle is arranged along the length direction of the shell; the baffle is mounted on the second shell and is arranged close to the output end, and the baffle is located above the output hole.

10. The heating device according to any one of claims 1 to 9, characterized in that The heating device is also provided with a drain pipe, the drain pipe is mounted on the bottom of the shell, the drain pipe is at least partially arranged in the first heating cavity and the second heating cavity, a water inlet hole is formed in the bottom wall of the drain pipe, and the water inlet hole is attached to the bottom of the shell; the water inlet hole is respectively communicated with the first heating cavity or the second heating cavity, the end of the drain pipe is provided with a water outlet, and the water outlet is communicated with the water inlet hole. The heating device is also provided with a drain pipe, the drain pipe is mounted on the bottom of the shell, the drain pipe is at least partially arranged in the first heating cavity and the second heating cavity, a water inlet hole is formed in the bottom wall of the drain pipe, and the water inlet hole is attached to the bottom of the shell; the water inlet hole is respectively communicated with the first heating cavity or the second heating cavity, the end of the drain pipe is provided with a water outlet, and the water outlet is communicated with the water inlet hole.

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