Air inlet pipeline of drying bed and drying bed

Abstract

The utility model relates to the field of drying beds, and discloses an air inlet pipeline of a drying bed and the drying bed, the air inlet pipeline of the drying bed comprises a first pipeline and a second pipeline, the air inlet end of the first pipeline is connected to the air outlet end of the second pipeline, the air outlet end of the first pipeline is communicated with the interior of the drying bed, and a ladder stand is arranged in the first pipeline. And a manhole door is arranged on the second pipeline. According to the air inlet pipeline, the manhole door and the ladder stand are arranged, so that a maintainer can enter the drying bed from the air inlet pipeline, and the internal structure of the drying bed can be maintained under the condition that the outer shell of the drying bed does not need to be disassembled. Therefore, the maintenance difficulty of the internal structure of the drying bed is greatly reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of drying beds, in particular to an air inlet duct of a drying bed and a drying bed comprising the air inlet duct. Background Art

[0002] The drying bed is an enhanced special-purpose drying equipment. It is usually used in the final drying stage of materials. During the drying process, mechanical vibration is used to promote the fluidization of materials, which is not only conducive to boundary layer turbulence and enhanced heat and mass transfer, but also ensures that the drying equipment is produced and operated under relatively stable fluid dynamics.

[0003] Announcement No. CN 220818295 U discloses a hot air drying bed, which, like most drying beds today, does not have a structure specifically used for internal maintenance. Generally speaking, when regular maintenance is required or the internal structure of the drying bed fails and needs to be replaced, the outer shell of the drying bed must be disassembled before the internal structure of the drying bed can be inspected, so the maintenance is difficult. Utility Model Content

[0004] The utility model aims to solve the problem of difficulty in overhauling the internal structure of the drying bed in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an air inlet duct of a drying bed, characterized in that it includes a first duct and a second duct, the air inlet end of the first duct is connected to the air outlet end of the second duct, the air outlet end of the first duct is connected to the interior of the drying bed, a ladder is arranged in the first duct, and a manhole door is arranged on the second duct.

[0006] Preferably, the manhole door comprises a third pipe and a cover plate, the inner end of the third pipe is connected to the second pipe, a support portion is formed on the outer end of the third pipe, and the support portion is connected to the cover plate.

[0007] Optionally, a first connecting portion is formed on the supporting portion, a second connecting portion is formed on the cover plate, and the manhole door further comprises a first connecting member, and the first connecting portion and the second connecting portion are rotatably connected via the first connecting member.

[0008] Optionally, a third connecting portion is formed on the supporting portion, a fourth connecting portion is formed on the cover plate, the manhole door further comprises a second connecting member, and the third connecting portion and the fourth connecting portion are flipped and connected via the second connecting member.

[0009] Preferably, a plurality of the third connection parts and a plurality of the fourth connection parts are provided.

[0010] Preferably, the manhole door further comprises a fixing member, and the fixing member is used to fix the cover plate on the supporting portion.

[0011] Preferably, the air inlet duct further comprises a tool cabinet, and the tool cabinet and the manhole door are spaced apart in the extension direction of the second duct.

[0012] Preferably, a heat insulation board is provided in the tool cabinet.

[0013] Preferably, the tool cabinet is also provided with an opening.

[0014] The utility model also provides a drying bed comprising the air inlet duct.

[0015] Through the above technical solution, maintenance personnel can enter the drying bed through the manhole door and ladder of the air inlet duct, and inspect the internal structure of the drying bed without dismantling the outer shell of the drying bed. Therefore, the difficulty of inspecting the internal structure of the drying bed is greatly reduced, and the inspection efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the air inlet duct;

[0017] Figure 2 It is a schematic diagram of the first partial structure of the air inlet duct;

[0018] Figure 3 is a second partial structural schematic diagram of the air inlet duct;

[0019] Figure 4 It is a schematic diagram of the third partial structure of the air inlet duct.

[0020] Description of Reference Numerals

[0021] 11. First pipeline; 12. Second pipeline; 2. Ladder; 3. Manhole door; 31. Third pipeline; 311. Support portion; 3111. Third protrusion; 3112. First fixing hole; 312. Cover plate; 3121. Fourth protrusion; 3122. First handle; 41. Heat insulation board; 42. Adsorption board; 421. Second handle; 43. Opening. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" are usually understood in conjunction with the directions shown in the drawings and actual applications, and "inside and outside" refer to the inside and outside of the component outline.

[0023] The utility model provides an air inlet duct for a drying bed. Figure 1-2 As shown, the air inlet duct includes a first duct 11 and a second duct 12, the air inlet end of the first duct 12 is connected to the air outlet end of the second duct 11, the air outlet end of the first duct 11 is connected to the interior of the drying bed, a ladder 2 is arranged in the first duct 11, and a manhole door 3 is arranged on the second duct 12.

[0024] Specifically, when the drying bed is working normally, the air inlet duct is mainly used to continuously transport hot air to the inside of the drying bed. The ladder 2 is fixedly connected to the inner wall of the first pipe 11, and the ladder 2 extends from the connection between the second pipe 12 and the first pipe 11 (for example, the connection between the air outlet end of the second pipe 12 and the air inlet end of the first pipe 11) to the air inlet of the drying bed. The length of the ladder 2 is substantially the same as the length of the first pipe 11, and the extension direction of the ladder 2 is parallel to the extension direction of the first pipe 11. Further, the shape of the ladder 2 can be consistent with the shape of the pipe to leave more pipe space for smooth passage of maintenance personnel. For example, when the air inlet duct is a circular pipe, the ladder 2 can be an arc-shaped ladder that fits the inner wall of the first pipe 11. Further, the ladder 2 can be welded in the first pipe 11, which is more stable and the maintenance personnel are safer during the maintenance operation. The manhole door 3 is fixedly arranged on the outer wall of the second pipe 12. The specific fixing method can be welding or bolt connection. The manhole door 3 may be further arranged at a position close to the ladder 2 (for example, the distance between the manhole door 3 and the ladder 2 is less than one meter) so that maintenance personnel can enter and exit the drying bed more quickly.

[0025] The working process of the internal structure maintenance of the drying bed is as follows: the first step is to ensure that the internal space temperature of the drying bed and the air inlet duct is suitable for the human body; the second step is for the maintenance personnel to enter the second duct 12 through the manhole door 3; the third step is for the maintenance personnel to walk to the bottom of the ladder 2 and enter the drying bed along the first duct 11 through the ladder 2; the fourth step is to find the fault source in the drying bed and repair it or perform a routine inspection on the structure in the drying bed.

[0026] In addition, when the internal structure of the drying bed fails or is regularly overhauled, it needs to be shut down for maintenance. However, when the machine is just shut down, the temperature of the air inlet duct and the inside of the drying bed are both high, and maintenance personnel cannot directly perform maintenance without heat dissipation. Therefore, further, the air inlet duct can be connected to a cooling device and absorb and transfer the heat of the duct under its action to achieve the purpose of cooling, thereby effectively shortening the heat dissipation process before the drying bed is shut down for maintenance. Among them, the cooling device can be a water cooler, an evaporative cooler, an air cooler, etc., and you can make a choice according to the actual situation.

[0027] In order to enhance stability, several support bases can be further arranged at the connection points of the pipelines, with one end of the support base fixed to the ground and the other end fixed to the bottom of the pipeline. Figure 1-2 As shown, a first support base 111 is provided at the connection between the first pipe 11 and the second pipe 12 ; and a second support base 121 is provided at the connection between the second pipes 12 .

[0028] Furthermore, the first pipe 11 may be a vertical pipe; the second pipe 12 may be a horizontal pipe. The pipe system of the drying bed is composed of vertical pipes and horizontal pipes, which is more beautiful as a whole and can save space.

[0029] Preferably, if Figure 1 and Figure 3 As shown, the manhole door 3 includes a third pipe 31 and a cover plate 312 . The inner end of the third pipe 31 is connected to the second pipe 12 . A support portion 311 is formed on the outer end of the third pipe 31 , and the support portion 311 is connected to the cover plate 312 .

[0030] Specifically, the third duct 31 is used for people to enter and exit the air inlet duct, and the length and direction of the third duct 31 should be finally determined according to different actual conditions. When the second duct 12 connected to the third duct 31 is close to the ground (for example, the height is about half a meter to one meter), the maintenance personnel can directly drill into the second duct 12, and the third duct 31 can use a shorter and horizontal duct; when the second duct 12 connected to the third duct 31 is far from the ground, the maintenance personnel need assistance or transition to enter the second duct 12, and the third duct 31 can use a longer and inclined or vertical duct. If necessary, in the latter case, a ladder 2 can be further set in the third duct 31 to assist maintenance personnel to crawl in the third duct 31.

[0031] The cover plate 312 covers the support portion 311 of the third pipe 31, and is used to close the outer end of the third pipe 31 to prevent hot air from being discharged through the third pipe 31. The cover plate 312 is usually opened only during maintenance. Furthermore, a first handle 3122 may be provided on the cover plate 312 to facilitate maintenance personnel to open and close the cover plate.

[0032] Optionally, a first connection portion is formed on the support portion 311 , a second connection portion is formed on the cover plate 312 , and the manhole door 3 further includes a first connection member, and the first connection portion and the second connection portion are rotatably connected via the first connection member.

[0033] The advantage of the rotating connection method is that it is more labor-saving and space-saving when opening and closing the cover plate 312. Specifically, as shown in the figure, the first connecting part can be a first protrusion, and the first protrusion is provided with a first through hole; the second connecting part can be a second protrusion, and the second protrusion is provided with a second through hole; the first connecting member can be a first rotating shaft, and the first rotating shaft is inserted into the first through hole and the second through hole, and the end of the first rotating shaft can be threaded and fixed to the first protrusion and / or the second protrusion by a nut. Among them, the hole axes of the first through hole and the second through hole coincide with each other and are both parallel to the extension direction of the third pipe 31. Of course, the first connecting part and the second connecting part can also be directly the first through hole and the second through hole.

[0034] Furthermore, the first rotating shaft can be interference fit with the first through hole and the second through hole. The interference fit can prevent the first rotating shaft from being separated from the first through hole and the second through hole, and avoid the first protrusion and the second protrusion from being separated to affect the rotation of the cover plate 312. Moreover, the interference fit provides a damping force between the hole and the shaft, and the damping force can prevent the cover plate 312 from rebounding.

[0035] Optionally, a third connection portion is formed on the support portion 311, a fourth connection portion is formed on the cover plate 312, the manhole door 3 further includes a second connection member, and the third connection portion and the fourth connection portion are flipped and connected via the second connection member.

[0036] Specifically, the flip connection method has strong applicability and a wider range of applications than the rotary connection. For example, when the third pipe 31 of the manhole door 3 is not a vertical pipe, the rotating cover plate 312 is more affected by the deadweight of the cover plate 312 than the flip cover plate 312, resulting in the cover plate 312 opening and closing process The stability and controllability are not as good as the flip cover plate 312.

[0037] like Figure 3 As shown, the first connection part may be the third protrusion 3111, and the third through hole is formed on the third protrusion 3111; the second connection part may be the fourth protrusion 3121, and the fourth through hole is formed on the fourth protrusion 3121; the second connection member may be the second shaft, and the second shaft is plugged into the third through hole and the fourth through hole, and the end of the second shaft may be threaded and fixed to the third protrusion 3111 and / or the fourth protrusion 3121 by a nut. The axis of the third through hole and the fourth through hole coincide with each other and are both perpendicular to the extension direction of the third pipe 31.

[0038] Furthermore, the second rotating shaft can be interference fit with the third through hole and the fourth through hole. The interference fit can prevent the second rotating shaft from being separated from the third through hole and the fourth through hole, and prevent the third protrusion 3111 and the fourth protrusion 3121 from separating and affecting the flipping of the cover plate 312. In addition, the interference fit provides a damping force between the hole and the shaft, and the damping force can prevent the cover plate 312 from rebounding.

[0039] Preferably, a plurality of the third connection parts and a plurality of the fourth connection parts are provided.

[0040] Specifically, the arrangement directions of the plurality of third connection parts and the fourth connection parts are perpendicular to the extension direction of the third pipe 31. The number of the third connection parts and the fourth connection parts is consistent and corresponds one to one. With the increase of the flipping fulcrum (each group of the third connection parts and the fourth connection parts provides one flipping fulcrum), the cover plate 312 can be flipped stably to avoid shaking during the flipping process due to too few flipping fulcrums, thereby causing the cover plate 312 to be misaligned with the support part 311, and ultimately affecting the sealing of the manhole door 3. At the same time, the provision of a plurality of third connection parts and the fourth connection parts can also disperse the connection pressure between the cover plate 312 and the support part 311, and thus increase the service life of the connection parts. In addition, when any one of the connection parts is damaged, it will not affect the flipping of the cover plate 312, and the flipping stability is better.

[0041] Preferably, the manhole door 3 further includes a fixing member 313 , and the fixing member 313 is used to fix the cover plate 312 on the supporting portion 311 .

[0042] Specifically, the fixing member 313 can further improve the stability of the cover plate 312 when it is closed, and ensure that the cover plate 312 will not be displaced due to the impact of the airflow. If the cover plate 312 is not in a completely closed state, the manhole door 3 will not be able to play a sealing role, and the hot air transported in the air inlet duct will be diverted through the third duct 31 of the manhole door 3, which may cause the hot air that finally enters the dryer to be of substandard quality, and further affect the working quality and working efficiency of the dryer. Among them, the fixing member 313 can be a bolt and nut. For example, Figure 2 As shown in , a plurality of first fixing holes 3112 are provided on the support portion 311, and a plurality of second fixing holes with the same aperture as the first fixing holes 3112 are provided at corresponding positions of the cover plate 312. When the cover plate 312 is closed, the axis lines of the plurality of first fixing holes 3112 and the plurality of second fixing holes coincide with each other one by one, and the cover plate 312 can be limited by passing the bolts through the first fixing holes and the second fixing holes and then cooperating with the nuts. Of course, the fixing member can also be a snap-fit ​​structure, a magnetic structure, etc., as long as the closed state of the cover plate 312 can be positioned and the normal opening of the cover plate 312 will not be affected.

[0043] Preferably, a tool cabinet 4 is further included, and the tool cabinet 4 and the manhole door 3 are spaced apart in the extending direction of the second pipeline 12 .

[0044] Specifically, the tool cabinet 4 is fixedly arranged on the outer side wall of the second pipe 12. The fixing method can be welding or bolt connection. Figure 1-2The steps of setting the tool cabinet 4 on the second pipe 12 are illustrated as follows: first, an opening matching the shape of the second pipe 12 is cut on the back of the tool cabinet 4, then the cut tool cabinet 4 is mounted on the outer wall of the second pipe 12, and finally the contact edges of the tool cabinet 4 and the second pipe 12 are welded.

[0045] The purpose of arranging the tool cabinet 4 on the air inlet duct is to increase the convenience of the maintenance process, so that maintenance personnel can take and replace tools nearby during maintenance. In addition, the separate configuration of the tool cabinet 4 is also conducive to the classification and storage of special or common tools for maintenance of the internal structure of the drying bed. In addition, the spacing between the tool cabinet 4 and the manhole door 3 can be less than one meter to further improve the maintenance efficiency.

[0046] Preferably, a heat insulation board 41 is provided in the tool cabinet 4 .

[0047] Specifically, the heat insulation board 41 is fixed in the inner cavity of the tool cabinet 4 and is kept parallel to the cabinet door. It is located between the second pipe 12 and the maintenance tools and isolates the second pipe 12 from the maintenance tools to reduce the damage to the tools in the tool cabinet 4 caused by the high temperature transmitted from the second pipe 12. The heat insulation board 41 can be made of polystyrene, rock wool, glass wool, polyurethane, etc. The heat insulation board 41 can be directly welded to the inner wall of the tool cabinet 4, or it can be fixed to the inner wall of the tool cabinet 4 by bolts, or it can be connected to the inner wall of the tool cabinet 4 by an intermediate connecting piece such as a support plate, a magnetic plate (for example Figure 1 and Figure 4 The magnetic plate 42) and the like are indirectly connected to the tool cabinet 4.

[0048] Preferably, the tool cabinet 4 is further provided with an opening 43 .

[0049] In order to facilitate regular inspection of the status of the heat insulation board 41 and timely replacement of the aged or damaged heat insulation board 41 , an opening 43 is further provided on the side of the tool cabinet 4 , and the opening 43 is used for inserting or withdrawing the heat insulation board 41 .

[0050] Furthermore, if Figure 1 and Figure 4 As shown, one side of the heat insulation board 41 is fixed on the magnetic plate 42 and the two are perpendicular to each other, and the other side of the heat insulation board 41 is inserted into the tool cabinet 4 along the opening 43 until the magnetic plate 42 covers the opening 43 and is adsorbed on the tool cabinet 4, and at the same time, the heat insulation board 41 is positioned. Furthermore, a second handle 421 can be provided on the surface of the magnetic plate 42 facing away from the heat insulation board 41 to facilitate the insertion or extraction of the heat insulation board.

[0051] The utility model also provides a drying bed comprising the air inlet duct.

[0052] Specifically, the air inlet duct is arranged at the bottom of the drying bed, and the interior of the air inlet duct is communicated with the interior of the drying bed.

[0053] Combination Figure 1-4 The complete maintenance process is explained as follows: the first step is to stop the drying operation of the dryer and stop supplying hot air to the air inlet duct and ventilating it; the second step is to remove the fixings 313 on the manhole door 3 and open the cover 312 of the manhole door 3; the third step is to confirm that the temperature is suitable for the human body and the maintenance personnel take the required tools from the tool cabinet 4 and enter the second pipe 12 through the third pipe 31; the fourth step is to walk to the junction of the second pipe 12 and the first pipe 11 and pass through the first pipe 11 through the ladder 2 to enter the interior of the drying bed; the fifth step is to perform maintenance work inside the drying bed; the sixth step is to return along the original route to the interior of the drying bed; the seventh step is to close the cover 312 of the manhole door 3 and reinstall the fixings 313; the eighth step is to put the maintenance tools back into the tool box 4 as they are.

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An air inlet duct for a drying bed, characterized in that: The drying machine comprises a first pipe (11) and a second pipe (12), wherein the air inlet end of the first pipe (11) is connected to the air outlet end of the second pipe (12), the air outlet end of the first pipe (11) is connected to the interior of a drying bed, a ladder (2) is arranged in the first pipe (11), and a manhole door (3) is arranged on the second pipe (12).

2. The air inlet duct of the drying bed according to claim 1, characterized in that: The manhole door (3) comprises a third pipe (31) and a cover plate (312); the inner end of the third pipe (31) is connected to the second pipe (12); a support portion (311) is formed on the outer end of the third pipe (31); and the support portion (311) is connected to the cover plate (312).

3. The air inlet duct of the drying bed according to claim 2, characterized in that: A first connection portion is formed on the support portion (311), a second connection portion is formed on the cover plate (312), and the manhole door (3) further comprises a first connection member, and the first connection portion and the second connection portion are rotatably connected via the first connection member.

4. The air inlet duct of the drying bed according to claim 2, characterized in that: A third connection portion is formed on the support portion (311), a fourth connection portion is formed on the cover plate (312), and the manhole door (3) further comprises a second connection member, and the third connection portion and the fourth connection portion are flipped and connected via the second connection member.

5. The air inlet duct of the drying bed according to claim 4, characterized in that: A plurality of the third connection parts and a plurality of the fourth connection parts are provided.

6. The air inlet duct of the drying bed according to claim 2, characterized in that: The manhole door (3) further comprises a fixing member (313), wherein the fixing member (313) is used to fix the cover plate (312) on the support portion (311).

7. The air inlet duct of the drying bed according to any one of claims 1 to 6, characterized in that: It also comprises a tool cabinet (4), wherein the tool cabinet (4) and the manhole door (3) are arranged at a distance in the extension direction of the second pipeline (12).

8. The air inlet duct of the drying bed according to claim 7, characterized in that: A heat insulation board (41) is arranged in the tool cabinet (4).

9. The air inlet duct of the drying bed according to claim 8, characterized in that: The tool cabinet (4) is also provided with an opening (43).

10. A drying bed, characterized in that: Comprising the air inlet duct as described in any one of claims 1-9.

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