A heating and drying device for processing a lamp tube

Abstract

The utility model discloses a kind of heating drying devices for lamp tube processing, belong to lamp tube processing technical field, including drying cabinet, heating piece for lamp tube drying is provided on the drying cabinet;The heating piece includes the air deflector slidingly connected in the inside of drying cabinet, the lower surface of the drying cabinet is connected with ventilation bin, and several groups of heating pipes are installed in ventilation bin, and one end of the left and right sides of ventilation bin is communicated and penetrates drying cabinet.This utility model, since air deflector is mouth-shaped, and hot air can flow from bottom to top, therefore, the air in ventilation bin is mouth-shaped by the air deflector of lifting, conveyed to the lamp tube placed on, to improve the heating uniformity of lamp tube in drying process, to improve drying effect, simultaneously, hot air in drying cabinet can be conveyed to ventilation bin and backflow to drying cabinet, to improve the heating rate in drying cabinet, and reduce the power consumption of heating pipe, to improve drying efficiency, and save energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of lamp tube processing technology, and in particular to a heating and drying device for lamp tube processing. Background Technology

[0002] An ultraviolet lamp is a device that emits ultraviolet light. It is an essential tool for observing the fluorescence and phosphorescence characteristics of samples and is also a physical means of sterilization and disinfection. Its wavelength ranges from 10 to 400 nm.

[0003] As one of the main components of ultraviolet lamps, the lamp tube usually requires multiple processing steps during manufacturing. Fluorescent powder coating is one of the main steps. After coating, the lamp tube needs to be dried. For example, utility model CN212902319U discloses a glass lamp cover drying box, including a drying box shell. A glass cover is movably fitted onto the front surface of the drying box shell. A movable baffle is movably fitted inside the drying box shell. A snap-fit ​​baffle is movably fitted onto one side of the movable baffle. A snap-fit ​​groove is opened on one side of the inner wall of the drying box shell. Through the designed control switch, ventilation holes, dust cover, and fan, the glass lamp cover drying box allows for convenient use. During use, the heating block is controlled by the control switch, and then the dust cover is opened to start the fan to expel the heat, thereby achieving the drying and dehumidification effect. This avoids the limitations of traditional drying boxes that can only perform drying, greatly improving the efficiency of workers and enhancing the practicality and economy of the drying box in use.

[0004] In the drying oven described in the above application, the heat generated by the heating block is applied from top to bottom when drying the lamp cover. However, the heat generated by the heating block decreases as it is transferred from top to bottom, which affects the uniformity of heating of the lamp cover below and thus affects the heating and drying effect. Therefore, a heating and drying device for lamp tube processing is proposed to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a heating and drying device for lamp tube processing. The heating element in the drying chamber can reciprocate to deliver hot air to the placed lamp tubes, thereby improving the heating uniformity of the lamp tube drying process and having the advantage of improving the drying effect.

[0007] (II) Technical Solution

[0008] This utility model provides a heating and drying device for lamp tube processing, including a drying box, on which a heating element for drying lamp tubes is provided;

[0009] The heating element includes an air guide frame slidably connected to the inside of the drying chamber. A ventilation chamber is connected to the lower surface of the drying chamber, and several sets of heating tubes are installed inside the ventilation chamber. Both sides of the ventilation chamber are connected to a ventilation pipe with one end penetrating the drying chamber and fixed to the air guide frame. A fan is fixedly installed on one side of the drying chamber. The air inlet of the fan is connected to a fresh air pipe, and the air outlet of the fan is connected to the ventilation chamber through a pipe fitting. A dehumidification pipe is connected to the upper surface of the drying chamber. A three-way valve is installed at the connection between the dehumidification pipe and the drying chamber, and a return pipe with one end connected to the fresh air pipe is connected through the three-way valve.

[0010] The air guide frame is U-shaped and has an opening on its front side. The interior of the air guide frame is hollow, and several equidistant air outlets are opened on the inner side of the air guide frame, and the air outlets are connected to the hollow part of the air guide frame.

[0011] The drying oven is equipped with a lifting assembly for driving the air guide frame to move vertically up and down.

[0012] The drying oven is equipped with a holder for placing lamp tubes.

[0013] Preferably, the ventilation duct is a flexible hose, and the upper end of the ventilation duct is connected to the hollow part of the air guide frame. A set of humidity sensors is installed below the air guide frame.

[0014] Preferably, the left and right sides of the air guide frame are both convex, and the left and right side walls of the drying chamber are provided with grooves for the convex ends of the air guide frame to slide and connect. The lifting assembly includes two threaded rods that are rotatably connected in the two grooves respectively. The upper end of the threaded rod passes through the drying chamber. A dual-axis motor is fixedly installed in the middle of the upper surface of the drying chamber, and the output shafts on both sides of the dual-axis motor are fixedly connected with rotating rods. The end of the rotating rod away from the dual-axis motor and the end of the threaded rod passing through the drying chamber are fixedly connected with meshing bevel gears.

[0015] Preferably, threaded holes are provided on the convex ends of the air guide frame on both the left and right sides, and the threaded holes are compatible with the threads on the outside of the threaded rod.

[0016] Preferably, the placement component includes a partition fixedly connected to the middle of the inner side of the drying oven, and several sets of placement racks are slidably connected to the left and right sides of the partition, and a connecting plate is fixedly connected to the front side of each set of placement racks, and a tray is placed in each placement rack.

[0017] Preferably, the front side of the partition is provided with a rectangular groove to which the connecting plate extends, and each of the placement racks is equipped with a slider extending into the partition on the side near the partition. The left and right sides of the partition are provided with sliding grooves for the slider to slide. The placement rack and the tray are provided with a number of interconnected ventilation holes.

[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0019] 1. The heating and drying device for lamp tube processing has a U-shaped air guide frame, and the blown hot air can flow from bottom to top. Therefore, the heated air in the ventilation chamber can be delivered to the placed lamp tube in a U-shape through the lifting air guide frame, so as to improve the uniformity of heating of the lamp tube during the drying process, thereby improving the drying effect. At the same time, the hot air in the drying box can be transported to the ventilation chamber and then flow back to the drying box, so as to increase the heating rate in the drying box and reduce the power consumption of the heating tube, thereby improving the drying efficiency and saving energy.

[0020] 2. In this heating and drying device for lamp tube processing, each set of placement racks can slide on the partition and can be pulled out through the connecting plate. Therefore, when the operator is handling lamp tubes, he only needs to pull the corresponding placement rack to take the corresponding tray from the placement rack, which improves the convenience of the operation of the entire device. Attached Figure Description

[0021] Figure 1 This is a perspective view of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the heating element structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the placement component of this utility model.

[0024] Reference numerals: 1. Drying oven; 2. Heating element; 21. Dual-shaft motor; 22. Rotating rod; 23. Bevel gear; 24. Air guide frame; 25. Threaded rod; 26. Ventilation chamber; 27. Heating tube; 28. Ventilation duct; 29. ​​Fan; 210. Fresh air duct; 211. Return duct; 212. Exhaust duct; 213. Three-way valve; 214. Air outlet; 215. Humidity sensor; 3. Placement component; 31. Partition; 32. Placement rack; 33. Tray; 34. Connecting plate; 35. Slider; 36. Slide rail. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1-3 As shown, the present invention proposes a heating and drying device for lamp tube processing, including a drying box 1, on which a heating element 2 for drying lamp tubes is provided;

[0029] The drying oven 1 is equipped with a holder 3 for placing lamp tubes.

[0030] In this invention, the heating element 2 inside the drying oven 1 can move the placed lamp tubes up and down and reciprocate to deliver hot air, thereby improving the heat uniformity of the lamp tube drying process.

[0031] It should be noted that the front of the drying oven 1 is hinged with a door, and a controller is installed on the door of the drying oven 1, and the controller contains sensors.

[0032] In an optional embodiment, the heating element 2 includes an air guide frame 24 slidably connected to the inside of the drying chamber 1. A ventilation chamber 26 is connected to the lower surface of the drying chamber 1, and several sets of heating pipes 27 are installed in the ventilation chamber 26. A ventilation pipe 28 is connected to both the left and right sides of the ventilation chamber 26, with one end penetrating through the drying chamber 1 and fixed to the air guide frame 24. A fan 29 is fixedly installed on one side of the drying chamber 1. The air inlet end of the fan 29 is connected to a fresh air pipe 210, and the air outlet end of the fan 29 is connected to the ventilation chamber 26 through a pipe fitting. A dehumidification pipe 212 is connected to the upper surface of the drying chamber 1, and dustproof nets are installed at the connection points between the pipe fitting and the ventilation chamber 26, and between the dehumidification pipe 212 and the drying chamber 1. A three-way valve 213 is installed at the connection point between the dehumidification pipe 212 and the drying chamber 1, and a return pipe 211 with one end connected to the fresh air pipe 210 is connected through the three-way valve 213.

[0033] In this embodiment, since the air guide frame 24 is U-shaped and the blown hot air can flow from bottom to top, the heated air in the ventilation chamber 26 can be transported in a U-shape to the placed lamp tubes by the lifting air guide frame 24, so as to improve the heating uniformity of the lamp tubes during the drying process, thereby improving the drying effect. At the same time, the hot air in the drying box 1 can be transported to the ventilation chamber 26 and then flow back into the drying box 1, so as to increase the heating rate in the drying box 1 and reduce the power consumption of the heating tube 27, thereby improving the drying efficiency and saving energy.

[0034] It should be noted that the air guide frame 24 is U-shaped and has an opening on its front side. The interior of the air guide frame 24 is hollow, and several air outlets 214 are evenly distributed on the inner side of the air guide frame 24. The air outlets 214 are connected to the hollow part of the air guide frame 24, so that the hot air delivered to the air guide frame 24 can be blown out evenly through the several air outlets 214.

[0035] The ventilation duct 28 is a flexible hose, and its upper end is connected to the hollow part of the air guide frame 24. A set of humidity sensors 215 is installed below the air guide frame 24. The three-way valve 213 is a solenoid valve. The humidity sensor 215 located below the air guide frame 24 detects the humidity in the drying chamber 1, thereby controlling the opening and closing of the three-way valve 213 to control the moisture in the drying chamber 1 to be discharged from the exhaust pipe 212 or the return pipe 211. If the humidity is controlled at 70%, that is, when the humidity sensor 215 detects that the moisture in the drying chamber 1 is greater than 70%, the connection between the exhaust pipe 212 and the drying chamber 1 is opened, and the moisture is directly discharged through the exhaust pipe 212. Conversely, if the humidity is less than 70%, the connection between the return pipe 211 and the drying chamber 1 is opened, so that the return pipe 211 returns the hot air in the drying chamber 1.

[0036] Meanwhile, in order to facilitate temperature detection inside the drying oven 1 and enable operators to control the temperature of the heating tube 27, a temperature sensor is also installed below the air guide frame 24. The temperature sensor is not shown in the figure. It is used to detect the temperature inside the drying oven 1 in order to control and adjust the heating temperature of the heating tube 27.

[0037] In addition, both the left and right sides of the air guide frame 24 are convex, and the left and right side walls of the inner cavity of the drying box 1 are provided with grooves for the convex ends of the air guide frame 24 to slide vertically in the grooves of the inner wall of the drying box 1.

[0038] Next, the drying chamber 1 is equipped with a lifting assembly for driving the air guide frame 24 to move vertically. The lifting assembly includes two threaded rods 25, which are rotatably connected to two grooves respectively. The upper end of the threaded rod 25 passes through the drying chamber 1. A dual-axis motor 21 is fixedly installed in the middle of the upper surface of the drying chamber 1. The output shafts on both sides of the dual-axis motor 21 are fixedly connected to rotating rods 22. The end of the rotating rod 22 away from the dual-axis motor 21 and the end of the threaded rod 25 passing through the drying chamber 1 are fixedly connected to meshing bevel gears 23, so that the rotating rod 22 can drive the threaded rod 25 to rotate synchronously through the meshing bevel gears 23, thereby driving the convex end of the air guide frame 24 to adjust its height. The dual-axis motor 21 is a servo motor.

[0039] Then, threaded holes are provided on the convex ends of the air guide frame 24 on both the left and right sides, and the threaded holes are matched with the threads on the outside of the threaded rod 25, so that the rotating threaded rod 25 can cooperate with the threaded holes on the convex ends of the air guide frame 24 to drive the air guide frame 24 to adjust.

[0040] In an optional embodiment, the placement component 3 includes a partition 31 fixedly connected to the middle of the inner side of the drying oven 1. Several sets of placement racks 32 are slidably connected to both the left and right sides of the partition 31, and a connecting plate 34 is fixedly connected to the front side of each set of placement racks 32. Each placement rack 32 contains a tray 33.

[0041] In this embodiment, by pulling out the connecting plate 34, a set of placement racks 32 on each connecting plate 34 are slid out of the partition 31, so that the operator can place the tray 33 with the light tubes laid flat into the placement rack 32.

[0042] It should be noted that a rectangular groove is provided on the front side of the partition 31 for the connecting plate 34 to extend into, so that the connecting plate 34 will not be blocked by the partition 31 when it slides towards the inside of the drying box 1. Each placement rack 32 is equipped with a slider 35 extending into the partition 31 on the side near the partition 31. Slide grooves 36 are provided on the left and right sides of the partition 31 for the slider 35 to slide.

[0043] The placement rack 32 can slide stably on the partition 31 along a horizontal plane through the sliding support of the slider 35 and the slide groove 36. Both the placement rack 32 and the tray 33 have several interconnected ventilation holes, so that the hot air can be blown evenly through the placement rack 32 and the tray 33 to the lamp tube placed in the tray 33.

[0044] Furthermore, both the front of the tray 33 and the connecting plate 34 are fixedly connected with heat-insulated handles, allowing operators to pick up and put down the tray 33 and pull out the connecting plate 34.

[0045] The controller is electrically connected to the humidity sensor 215, the dual-axis motor 21, the fan 29, the three-way valve 213, and the temperature sensor, respectively. It is used to control the opening and closing of the dual-axis motor 21 and the fan 29, and to receive the humidity and temperature values ​​transmitted by the humidity sensor 215 and the temperature sensor. It also controls the opening and closing of the three-way valve 213 and the heating temperature of the heating element 27. The control method of this utility model is automatic control through the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. However, this utility model is mainly used to protect the mechanical structure, so the control method and circuit connection and other technical means will not be described in detail.

[0046] Meanwhile, a dustproof net is installed at the air inlet of the fresh air duct 210, and a nitrogen delivery pipe is also connected to the air inlet of the fresh air duct 210. A VOC concentration detector is installed in the drying area of ​​the drying box 1 to monitor the drying box 1 in real time. If the concentration exceeds the lower explosive limit (LEL) of 25%, nitrogen is automatically injected for dilution.

[0047] The working principle in the above embodiments is as follows:

[0048] Pull out the connecting plates 34 in sequence to make a set of placement racks 32 on each connecting plate 34 slide out of the partition 31, and then place the tray 33 with the light tubes laid flat into the placement rack 32. Then push the connecting plates 34 to make the placement racks 32 slide back into the drying oven 1.

[0049] After closing the door of the drying oven 1, the heating tube 27 and the fan 29 can be started in sequence. The fan 29 blows air into the ventilation chamber 26. After being heated by the heating tube 27, the air is blown into the air guide frame 24 through the ventilation pipe 28 and then blown out evenly through several air outlets 214. During the blowing process, the dual-shaft motor 21 can be started to drive the rotating rods 22 on both sides to rotate. Then, through the meshing bevel gear 23, the threaded rod 25 is driven to rotate, which drives the air guide frame 24 to move up and down along the vertical and horizontal planes. This allows the blown hot air to be blown evenly up and down onto the lamp tubes placed on the tray 33 to dry the lamp tubes.

[0050] During the drying process, the humidity sensor 215, in conjunction with the opening and closing of the three-way valve 213, controls the discharge and recirculation of moisture in the drying chamber 1. If the humidity sensor 215 detects that the moisture in the drying chamber 1 is greater than 70%, the three-way valve 213 controls the opening of the connection between the exhaust pipe 212 and the drying chamber 1, allowing moisture to be discharged directly through the exhaust pipe 212. Conversely, if the moisture is less than 70%, the return pipe 211 is connected to the connection between the return pipe 211 and the drying chamber 1, allowing the return pipe 211 to return the hot air in the drying chamber 1 to the fresh air pipe 210, mix it with fresh air, and blow it into the drying chamber 1. This reduces the power consumption required by the heating pipe 27 to heat the air, thereby saving energy.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating and drying device for lamp tube processing, comprising a drying oven (1), characterized in that: The drying oven (1) is equipped with a heating element (2) for drying lamp tubes; The heating element (2) includes an air guide frame (24) slidably connected to the inside of the drying box (1). The lower surface of the drying box (1) is connected to a ventilation chamber (26), and several sets of heating tubes (27) are installed in the ventilation chamber (26). Both sides of the ventilation chamber (26) are connected to a ventilation pipe (28) that passes through the drying box (1) and is fixed to the air guide frame (24). A fan (29) is fixedly installed on one side of the drying box (1). The air inlet of the fan (29) is connected to a fresh air pipe (210), and the air outlet of the fan (29) is connected to the ventilation chamber (26) through a pipe fitting. The upper surface of the drying box (1) is connected to a dehumidification pipe (212). A three-way valve (213) is installed at the connection between the dehumidification pipe (212) and the drying box (1), and a return pipe (211) with one end connected to the fresh air pipe (210) is connected through the three-way valve (213). The air guide frame (24) is shaped like a square and has an opening on its front side. The interior of the air guide frame (24) is hollow. Several air outlets (214) are evenly distributed on the inner side of the air guide frame (24), and the air outlets (214) are connected to the hollow part of the air guide frame (24). The drying box (1) is equipped with a lifting assembly for driving the air guide frame (24) to rise and fall vertically; The drying oven (1) is equipped with a holder (3) for placing lamp tubes.

2. The heating and drying device for lamp tube processing according to claim 1, characterized in that, The ventilation pipe (28) is a flexible hose, and the upper end of the ventilation pipe (28) is connected to the hollow part of the air guide frame (24). A set of humidity sensors (215) is installed below the air guide frame (24).

3. The heating and drying apparatus for lamp tube processing according to claim 1, characterized in that, The air guide frame (24) has a convex shape on both the left and right sides, and the inner walls of the drying box (1) are provided with grooves for sliding connection of the convex end of the air guide frame (24). The lifting assembly includes two threaded rods (25) that are rotatably connected in the two grooves respectively. The upper end of the threaded rod (25) passes through the drying box (1). A dual-axis motor (21) is fixedly installed in the middle of the upper surface of the drying box (1), and the output shafts on both the left and right sides of the dual-axis motor (21) are fixedly connected with rotating rods (22). The end of the rotating rod (22) away from the dual-axis motor (21) and the end of the threaded rod (25) passing through the drying box (1) are fixedly connected with meshing bevel gears (23).

4. The heating and drying apparatus for lamp tube processing according to claim 1, characterized in that, The convex ends on both sides of the air guide frame (24) are provided with threaded holes, and the threaded holes are compatible with the threads on the outside of the threaded rod (25).

5. The heating and drying apparatus for lamp tube processing according to claim 1, characterized in that, The placement component (3) includes a partition (31) fixedly connected to the middle of the inner side of the drying box (1). Several sets of placement racks (32) are slidably connected to the left and right sides of the partition (31), and a connecting plate (34) is fixedly connected to the front side of each set of placement racks (32). A tray (33) is placed in each of the placement racks (32).

6. The heating and drying apparatus for lamp tube processing according to claim 5, characterized in that, The front side of the partition (31) is provided with a rectangular groove to which the connecting plate (34) extends. Each of the placement racks (32) is equipped with a slider (35) extending into the partition (31) on the side near the partition (31). The left and right sides of the partition (31) are provided with sliding grooves (36) for the slider (35) to slide. The placement rack (32) and the tray (33) are provided with a number of ventilation holes that are interconnected.

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