A drying device for pin shaft paint spraying

Abstract

The utility model relates to surface treatment technical field discloses a kind of drying device for pin shaft paint spraying, the utility model includes chain conveyor belt;It further includes insulation board, the tunnel structure of the transmission direction along conveyor belt is formed by the insulation board being fixed in chain conveyor belt outside;Electric heating circulating fan, setting in the top of the insulation board, the insulation board includes two air ports respectively to the air blowing and air suction in the insulation board;The electric heating circulating fan has an air circulation path located in the outside of the insulation board, and also be equipped with electric heater setting in the air circulation path to air heating.The utility model reduces heat leakage by improving the air path of hot air circulation, effectively shortens the waiting time of early hot machine, to reach the energy consumption of reducing hot time, and hot air and heat energy are concentrated in the middle position of insulation board in work, compared with the heat energy wasted in prior art through conveying device is lower.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment technology, and in particular to a drying device for spray painting pins. Background Technology

[0002] The existing patent publication number (CN217764326U) discloses a hot air circulation device for a high-temperature tunnel oven. This device includes a tunnel oven body, a pump body fixedly installed on the outer side of the oven body, and a first flow pipe fixedly connected to the outer side of the pump body. The other end of the first flow pipe is fixedly connected to an air intake pipe, and air intake holes are evenly spaced on the outer side of the air intake pipe. A deflector pipe is fixedly connected to the outer side of the pump body. This invention, by positioning the air intake pipe and exhaust pipe above and below the conveyor belt, allows hot air to be transferred from the upper region of the tunnel oven body to the lower region by activating the pump body when items move from the upper surface of the conveyor belt into the interior of the tunnel oven body for drying. This allows the hot air to exit through the exhaust pipe. However, when hot air comes into contact with the conveyor belt, the obstruction and guiding effect of the conveyor belt wall cause a large amount of hot air to be discharged to the openings at both ends, resulting in a significant loss of heat. Even with perforations in the conveyor belt, a large amount of hot air will still leak out. In addition, heat continuously passes through the perforated conveyor belt, causing heat exchange between the air and the conveyor belt, which then carries away the heat. Furthermore, a cooling fan is installed, which not only cools the parts but also the conveyor belt when it reaches the end. This setup results in a continuous flow of heat being carried away by the conveyor belt and cooled by the cooling fan. Obviously, such an air path design layout leads to a significant increase in equipment energy consumption.

[0003] This proposal is put forward in order to improve and optimize the above-mentioned problems or shortcomings. Utility Model Content

[0004] This utility model provides a drying device for spray painting pins to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution to solve the above-mentioned technical problems: A drying device for pin-type spray painting includes a chain conveyor belt; It also includes an insulation board, which is fixed to the outside of the chain conveyor belt to form a tunnel structure along the conveyor belt's transmission direction; An electric heating circulating fan is installed on the top of the insulation board, which includes two air outlets that blow air into the insulation board and draw air in. The electric heating circulating fan has an air circulation path located outside the insulation board and is also equipped with an electric heater installed in the air circulation path to heat the air. The air guide plate has at least one inclined or arc-shaped wall surface, and the air guide plate is fixed to the top wall or inner side wall of the insulation board. The inclined or arc-shaped wall surface is located on the air blowing path of the electric heating circulating fan.

[0006] Preferably, the electric heating circulating fan includes a hot circulating fan, a fan shroud, and a circulating duct. The circulating duct is connected to the intake end of the hot circulating fan, and the fan shroud is connected to the exhaust end of the hot circulating fan. The circulating duct and the fan shroud are connected to the cavity formed by the insulation board. The hot circulating fan draws air from inside the insulation board back to the hot circulating fan, pressurizes it, and then discharges it back into the insulation board through the fan shroud.

[0007] Preferably, the air intake port of the circulating air duct is closer to both ends of the insulation board than the exhaust port of the electric heater.

[0008] Preferably, a wind baffle is fixedly provided on the inner top wall of the insulation board.

[0009] Preferably, it also includes an exhaust pipe and a transition pipe, wherein the transition pipe connects the exhaust pipe and the circulating air pipe, and the air intake end of the exhaust pipe points to the middle of the insulation board, and the air intake port of the exhaust pipe is located on the lower side of the baffle plate.

[0010] Preferably, the diameter of the exhaust duct is smaller than the diameter of the recirculation duct.

[0011] Preferably, the electric heating circulating fan is provided with a hot air fan protective cover.

[0012] The advantages and positive effects of this utility model are: By improving the air path of hot air circulation, heat leakage is reduced, and the initial warm-up waiting time is effectively shortened, thereby reducing heat consumption. In addition, during operation, hot air and heat energy are concentrated in the middle of the insulation board, which is less than the heat energy wasted by the conveying device in the existing technology. Two exhaust pipes for circulation recovery are configured on both sides of the air outlet. Hot air is absorbed as it moves to the two ends inside the insulation board, passes through the air hood again, is heated by the electric heater, and then enters the insulation board to form a circulation. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is an enlarged structural diagram of the present invention with cross-section AA. Figure 4 This is a side view structural diagram of the present invention.

[0015] The following labels are used in the attached diagram: 10. Hot air blower protective cover; 11. Hot air circulation fan; 12. Air hood; 13. Electric heater; 14. Circulating air duct; 15. Electric heating circulating fan; 16. Exhaust duct; 17. Transition pipe; 18. Baffle plate; 19. Air guide plate; 20. Insulation board. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance. The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: like Figure 1-4 As shown, the present invention provides a drying device for pin-shaft painting, which includes a chain conveyor belt (existing technology, including a driving motor and a chain drive structure). It also includes an insulation board 20, which is fixed to the outside of the chain conveyor belt to form a tunnel structure along the conveyor belt transmission direction; An electric heating circulating fan 15 is disposed on the top of the insulation board 20. The insulation board 20 includes two air outlets that blow air into the insulation board 20 and draw air in. The electric heating circulating fan 15 has an air circulation path located outside the insulation board 20, and is also provided with an electric heater 13 disposed in the air circulation path to heat the air. The air guide plate 19 has at least one inclined or arc-shaped wall surface. The air guide plate 19 is fixed to the inner top wall or inner side wall of the insulation plate 20. The inclined or arc-shaped wall surface is located on the air blowing path of the electric heating circulating fan 15, thereby adjusting the air blowing direction of the electric heating circulating fan 15. Specifically, the end of the air guide plate 19 points to the middle of the insulation plate 20, thereby guiding the hot air blown by the electric heating circulating fan 15 to the middle of the insulation plate 20. On the one hand, it moves away from the front and rear ports of the insulation plate 20 to reduce the heat loss rate. On the other hand, through the inclined guiding effect, the air is not only vertically downward but also horizontally displaced, thereby increasing the air flow speed on the side wall of the part and improving the drying uniformity of the side wall.

[0018] Preferably, the electric heating circulating fan 15 includes a hot circulating fan 11, a fan shroud 12, and a circulating air duct 14. The circulating air duct 14 is connected to the intake end of the hot circulating fan 11, and the fan shroud 12 is connected to the exhaust end of the hot circulating fan 11. The circulating air duct 14 and the fan shroud 12 are connected to the cavity formed by the insulation plate 20. The hot circulating fan 11 draws air from the insulation plate 20 back to the hot circulating fan 11, pressurizes it, and then discharges it back into the insulation plate 20 through the fan shroud 12. The air is heated by an electric heater 13 disposed in the fan shroud 12.

[0019] Preferably, the air intake port of the circulating air duct 14 is closer to both ends of the insulation board 20 than the exhaust port of the electric heater 13. In this way, after the hot air enters the insulation board 20, it undergoes heat transfer with the internal structure of the insulation board 20. The heat is transferred from the middle of the insulation board 20 to both ends. Before the hot air is discharged through both ends of the insulation board 20, it is recovered through the circulating air duct 14. After recovery, it is reheated by the electric heater 13 through the air hood 12. This can effectively reduce the rapid loss of heat.

[0020] Preferably, a wind baffle 18 is fixedly provided on the inner top wall of the insulation board 20.

[0021] Preferably, it also includes an exhaust pipe 16 and a transition pipe 17. The transition pipe 17 connects the exhaust pipe 16 and the circulating air pipe 14. The air intake end of the exhaust pipe 16 points to the middle of the insulation board 20. The air intake port of the exhaust pipe 16 is located on the lower side of the baffle plate 18. The hot air is light and located at the top inside the insulation board 20. The hot air is quickly drawn back through the exhaust pipe 16.

[0022] Preferably, the diameter of the exhaust duct 16 is smaller than the diameter of the circulating duct 14. After the hot air circulation fan 11 starts working, it draws air and increases the air pressure of the exhaust duct 16 through the diameter change of the transition pipe 17, thereby increasing the air speed.

[0023] Preferably, the electric heating circulating fan 15 is provided with a hot air fan protective cover 10, which covers the electric heating circulating fan 15 for physical protection.

[0024] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A drying device for pin-type spray painting, comprising a chain conveyor belt; characterized in that It also includes an insulation board (20), which is fixed to the outside of the chain conveyor belt to form a tunnel structure along the conveyor belt transmission direction; An electric heating circulating fan (15) is installed on the top of the insulation board (20). The insulation board (20) includes two air outlets that blow air into the insulation board (20) and draw air in. The electric heating circulating fan (15) has an air circulation path located outside the insulation board (20) and is also provided with an electric heater (13) installed in the air circulation path to heat the air. The air guide plate (19) has at least one inclined or arc-shaped wall surface. The air guide plate (19) is fixed to the inner top wall or inner side wall of the insulation board (20). The inclined or arc-shaped wall surface is located on the air blowing path of the electric heating circulating fan (15).

2. A pin shaft paint drying device according to claim 1, characterized in that: The electric heating circulating fan (15) includes a hot circulating fan (11), a fan shroud (12), and a circulating air duct (14). The circulating air duct (14) is connected to the air intake end of the hot circulating fan (11), and the fan shroud (12) is connected to the exhaust end of the hot circulating fan (11). The circulating air duct (14) and the fan shroud (12) are connected to the cavity formed by the insulation board (20). The hot circulating fan (11) draws air from the insulation board (20) back to the hot circulating fan (11), pressurizes it, and then discharges it back into the insulation board (20) through the fan shroud (12).

3. The drying device for spray painting pins according to claim 2, characterized in that: The air intake port of the circulating air duct (14) is closer to both ends of the insulation board (20) than the exhaust port of the electric heater (13).

4. The pin shaft paint drying device according to claim 3, characterized in that: A wind baffle (18) is fixedly provided on the inner top wall of the insulation board (20).

5. A pin drying device for use in pin painting, according to claim 4, characterized in that: It also includes an exhaust pipe (16) and a transition pipe (17), the transition pipe (17) connecting the exhaust pipe (16) and the circulating air pipe (14), and the air intake end of the exhaust pipe (16) points to the middle of the insulation board (20), and the air intake port of the exhaust pipe (16) is located on the lower side of the baffle plate (18).

6. A drying device for spray painting pins according to claim 5, characterized in that: The diameter of the exhaust duct (16) is smaller than the diameter of the circulating duct (14).

7. The pin shaft paint drying device according to any one of claims 2-6, characterized in that: The electric heating circulating fan (15) is provided with a hot air fan protective cover (10).

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