An air heater

Abstract

The utility model discloses an air heater relates to air heating technical field, including the casing, the number of casing is set to three, and three mounting plates series fixed connection, first mounting plate with the end of last mounting plate all is fixedly connected with the gas head, three mounting plates are intercommunicated, the top of casing all is fixedly connected with the top seat, the top of top seat all is fixedly connected with mounting plate through the bolt, the bottom of mounting plate and be located in the inside of casing all are fixedly connected with heat exchange pipe, this air heater is provided with the spray pipe and the spray head, when needing to clean the dust on the surface of heat exchange pipe and the radiating fin, need not to dismantle mounting plate from the top seat, takes out heat exchange pipe and the radiating fin from the inside of casing and cleans, can directly carry out the air blowing cleaning adhering object's mode to heat exchange pipe and the radiating fin, need not to dismantle, improves the cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air heating technology, specifically to an air heater. Background Technology

[0002] An air heater is an electric heating device primarily used to heat gas streams. According to a box-type air heater with application number CN216868816U, it features baffles that block normal airflow, slowing down air velocity and extending the residence time of air within the box, thereby improving heating efficiency. Furthermore, by incorporating heat sinks on the heating tubes, the surface area of ​​the tubes is increased, enhancing heat dissipation and ensuring the gas is heated to the specified temperature, thus avoiding wasted electrical resources. However, over time, dust and dirt accumulate on the heat sinks, reducing heat dissipation efficiency and affecting the heater's thermal conductivity. Accumulated dirt reduces heat exchange efficiency between the heat sink and the gas, increasing energy consumption and shortening equipment lifespan. Currently, this device requires the heat sink to be removed for heat dissipation, involving disassembly and reassembly, resulting in cumbersome cleaning and low cleaning efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides an air heater that solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an air heater, comprising a housing, wherein the housing comprises three units, and the three mounting plates are connected in series. An air head is fixedly connected to one end of both the first and last mounting plates. The three mounting plates are interconnected. A top seat is fixedly connected to the top of each housing, and a mounting plate is fixedly connected to the top of each top seat by bolts. A heat exchange tube is fixedly connected to the bottom of each mounting plate, located inside the housing. Both ends of the heat exchange tube extend above the mounting plate and are fixedly connected to liquid ends. Both sides of the heat exchange tube are fixedly connected to… The housing is equipped with heat sinks. Drive rails are fixedly connected to the top of the inner cavity of the housing, both before and after the heat exchange tubes. Each drive rail has a drive groove inside, and a threaded rod is rotatably connected to each drive groove via bearings. A slider is fitted onto the outer side of each threaded rod, and the slider engages with the threaded rod. The bottom end of each slider extends below the drive rail and is fixedly connected to a nozzle. Several nozzles are fixedly connected to the surface of each nozzle. The threaded rod and slider form a kinematic pair through a threaded engagement. When the threaded rod rotates, its thread engages with the internal thread of the slider, converting the rotational motion into axial movement of the slider through the helix angle.

[0005] Preferably, a first motor is fixedly mounted on one side of the housing via a motor mounting bracket, and the output end of the first motor is connected to one end of a threaded rod via a coupling. A sealed bearing is provided inside the housing and outside the output end of the first motor.

[0006] Preferably, a take-up box is fixedly connected to one side of the housing and between the two first motors. A rotating shaft is rotatably mounted inside the take-up box via bearings. Take-up rollers are fixedly sleeved on the outer sides of both ends of the rotating shaft. A flexible hose is wound around the outer side of each take-up roller. A guide groove is opened inside the drive rail and on one side of the drive slot. One end of each flexible hose passes through the guide groove and extends into the nozzle. A connecting pipe is fixedly installed inside the rotating shaft. The connecting pipe is connected to one end of each flexible hose via a connecting joint. A rotary joint is installed on one side of the take-up box. One end of each rotary joint is connected to one end of the connecting pipe.

[0007] Preferably, a pressurized air pump is fixedly connected to one side of the winding box, and one end of the pressurized air pump is connected to one end of the rotary joint.

[0008] Preferably, a second motor is fixedly installed on the other side of the winding box via a motor mounting bracket. The output end of the second motor is connected to one end of the rotating shaft via a coupling. Dustproof elastic sleeves are fixedly connected to both sides of the inner cavity of the drive groove, and one end of each dustproof elastic sleeve is connected to the outer side of the slider.

[0009] Preferably, a base is fixedly connected to the bottom of each housing, a connecting valve is fixedly connected to the bottom of each base, an integrated box is fixedly connected to the bottom of each connecting valve, an air pump is fixedly connected to the bottom of the integrated box, a dust filter is placed inside the integrated box, one end of the dust filter extends to the outside of the integrated box and is fixedly connected to one side of the integrated box by screws, and several filter holes are opened at the bottom of the dust filter. The first motor and the second motor can be JCV370 with self-locking, speed detection and adjustment or other models.

[0010] This utility model provides an air heater, which has the following beneficial effects:

[0011] 1. This air heater, equipped with a spray pipe and nozzle, allows for direct air blowing to clean the heat exchange tubes and fins. When dust needs to be cleaned from the surface of the heat exchange tubes and fins, there is no need to remove the mounting plate from the top base or take the heat exchange tubes and fins out of the housing for cleaning. This method improves cleaning efficiency by eliminating the need for disassembly.

[0012] 2. This air heater is equipped with an air pump, a connecting valve, and an integrated box. The air pump extracts the gas from inside the housing, and the gas carries the attached substances into the dust filter. The attached substances are separated from the gas through the filter holes. The air pump then extracts the gas and discharges it. The dust filter can be pulled out from inside the integrated box to clean the attached substances stored inside. Then, the dust filter is pushed back into the integrated box and fixed inside the integrated box with screws to continue the separation of gas and attached substances. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the housing of this utility model;

[0015] Figure 3 This is a schematic diagram of the drive component structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model;

[0017] Figure 5 This is a side view of the internal structure of the integrated box of this utility model.

[0018] In the diagram: 1. Housing; 2. Top seat; 3. Mounting plate; 4. Liquid end; 5. First motor; 6. Drive rail; 7. Threaded rod; 8. Slider; 9. Guide groove; 10. Hose; 11. Dustproof elastic sleeve; 12. Rewinding box; 14. Rotary joint; 15. Shaft; 16. Rewinding roller; 17. Drive groove; 18. Connecting pipe; 19. Pressurizing air pump; 20. Second motor; 21. Nozzle; 22. Nozzle head; 23. Base; 24. Connecting valve; 25. Suction pump; 26. Air head; 27. Heat exchange tube; 28. Heat sink; 29. ​​Integrated box; 30. Dust filter drawer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 5This utility model provides a technical solution: an air heater, including a housing 1, wherein the number of housings 1 is set to three, and the three mounting plates 3 are connected in series. An air head 26 is fixedly connected to one end of the first mounting plate 3 and the last mounting plate 3. The three mounting plates 3 are interconnected. A top seat 2 is fixedly connected to the top of each housing 1, and a mounting plate 3 is fixedly connected to the top of each top seat 2 by bolts. A heat exchange tube 27 is fixedly connected to the bottom of each mounting plate 3 and located inside the housing 1. Both ends of the heat exchange tube 27 extend to the upper part of the mounting plate 3. The heat exchange tube 27 is fixedly connected to the liquid end 4. Heat exchange fins 28 are fixedly connected to both sides of the heat exchange tube 27. Drive rails 6 are fixedly connected to the top of the inner cavity of the shell 1 and to the front and rear of the heat exchange tube 27. Drive grooves 17 are opened inside the drive rails 6. Threaded rods 7 are rotatably connected to the drive grooves 17 through bearings. Slider 8 is sleeved on the outside of the threaded rods 7. Slider 8 cooperates with threaded rods 7. The bottom end of the slider 8 extends to the bottom of the drive rail 6 and is fixedly connected to the nozzle 21. Several nozzles 22 are fixedly connected to the surface of the nozzle 21.

[0021] One side of the housing 1 is fixedly mounted with a first motor 5 via a motor mounting base. The output end of the first motor 5 is connected to one end of the threaded rod 7 via a coupling. A sealed bearing is provided inside the housing 1 and outside the output end of the first motor 5.

[0022] A take-up box 12 is fixedly connected to one side of the housing 1 and between the two first motors 5. A rotating shaft 15 is rotatably mounted inside the take-up box 12 via bearings. Take-up rollers 16 are fixedly sleeved on the outer sides of both ends of the rotating shaft 15. A flexible hose 10 is wound around the outer side of the take-up rollers 16. A guide groove 9 is opened inside the drive rail 6 and on one side of the drive groove 17. One end of the flexible hose 10 is inserted into the guide groove 9 and extends into the nozzle 21. A connecting pipe 18 is fixedly installed inside the rotating shaft 15. The connecting pipe 18 is connected to one end of the flexible hose 10 via a connecting joint. A rotary joint 14 is installed on one side of the take-up box 12. One end of the rotary joint 14 is connected to one end of the connecting pipe 18. The rotating shaft 15 can drive the two take-up rollers 16 to rotate, thereby winding or unwinding the two drive grooves 17.

[0023] A pressurizing air pump 19 is fixedly connected to one side of the winding box 12. One end of the pressurizing air pump 19 is connected to one end of the rotary joint 14. The pressurizing air pump 19 can pressurize the gas, and the model of the pressurizing air pump 19 can be Korchi MCH6 or other models.

[0024] On the other side of the winding box 12, a second motor 20 is fixedly installed via a motor mounting bracket. The output end of the second motor 20 is connected to one end of the rotating shaft 15 via a coupling. Dustproof elastic sleeves 11 are fixedly connected to both sides of the inner cavity of the drive groove 17. One end of the dustproof elastic sleeves 11 is connected to the outside of the slider 8. Trigger switches for position positioning are fixedly installed on both sides of the inner cavity of the drive groove 17.

[0025] The bottom of the housing 1 is fixedly connected to a base 23, the bottom of the base 23 is fixedly connected to a connecting valve 24, the bottom end of the connecting valve 24 is fixedly connected to an integrated box 29, the bottom of the integrated box 29 is fixedly connected to a vacuum pump 25, a dust filter 30 is placed inside the integrated box 29, one end of the dust filter 30 extends to the outside of the integrated box 29 and is fixedly connected to one side of the integrated box 29 by screws, the bottom of the dust filter 30 is provided with several filter holes, and a sealing strip for maintaining a seal is provided at one end of the integrated box 29 and on the inside of one end of the dust filter 30.

[0026] In summary, when this air heater is in use, an external air supply line is connected, and the air to be heated is input through the air head 26 located at the left end. Then, it enters the three housings 1 in sequence. The external heat transfer fluid heater inputs the hot liquid into the heat exchange tube 27 through one liquid end 4, and then inputs it again into the heat transfer fluid heater through another liquid end 4 for circulation heating. The air flows inside the housing 1 and comes into contact with the heat exchange tube 27 and the heat sink 28, thereby conducting temperature between the air and the hot liquid to achieve the function of heating the air. The hot air is discharged through the air head 26 at the right end to the external exhaust line for transportation and use.

[0027] When it is necessary to clean the dust on the surface of the heat exchange tube 27 and the heat sink 28, the air heating operation is paused and the cleaning operation is performed. At this time, the connecting valve 24 is opened, and then the air pump 25 is started. The air pump 25 draws the air out of the housing 1. At the same time, the output end of the first motor 5 drives the threaded rod 7 to rotate through the coupling, so that the threaded rod 7 drives the slider 8 to move, so that the slider 8 drives the nozzle 21 to move. At the same time, the output end of the second motor 20 drives the rotating shaft 15 to rotate, so that the rotating shaft 15 drives the two take-up rollers 16 to rotate synchronously, so that the two hoses 10 are released synchronously. The pressurized air pump 19 draws out the clean gas from the external air supply line and performs air purification. The gas is compressed and then discharged into the rotary joint 14, connecting pipe 18 and hose 10. It enters the nozzle 21 and nozzle 22 through the hose 10 and is sprayed out to blow away the dust and deposits on the surface of the heat exchange tube 27 and heat sink 28. The gas carries the deposits into the dust filter 30 and separates the deposits from the gas through the filter holes. The gas is then extracted by the air pump 25 and discharged. The dust filter 30 can be pulled out from the integrated box 29 to clean the deposits stored inside the dust filter 30. Then the dust filter 30 is pushed back into the integrated box 29 and fixed inside the integrated box 29 with screws to continue the separation of gas and deposits.

[0028] When the slider 8 moves to the leftmost maximum stroke, the trigger switch is triggered. At this time, the output end of the first motor 5 drives the threaded rod 7 to reverse, thereby driving the slider 8 to move the nozzle 21 and the nozzle 22 to reset. At the same time, the output end of the second motor 20 drives the rotating shaft 15 and the two take-up rollers 16 to reset and rotate, so that the take-up rollers 16 take up the hose 10.

[0029] The operation of the above-mentioned device is controlled by an external PLC controller according to a pre-written PLC control program. This enables the two first motors 5 to synchronously drive the threaded rod 7 to rotate, and the second motor 20 to synchronously drive the take-up roller 16 to rotate. Additionally, the pressurized air pump 19 pressurizes the cleaning gas according to the pre-set pressurization parameters and sprays it from the nozzle 22 to achieve the air pressure value required for air jet cleaning of the heat exchange tube 27 and the heat sink 28.

[0030] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the two ends of the shaft-shaped parts are connected by bearings, the connection position of the valve component is provided with anti-leakage rubber strips, the outside of the threaded rod or screw is provided with dust cover, and the equipment can be driven by either built-in battery or external power supply. The control method is automatic control by a 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. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air heater, comprising a housing (1), characterized in that: The number of housings (1) is set to three, and the three mounting plates (3) are connected in series. One end of the first mounting plate (3) and the last mounting plate (3) are fixedly connected to a gas head (26). The three mounting plates (3) are interconnected. The top of each housing (1) is fixedly connected to a top seat (2). The top of each top seat (2) is fixedly connected to a mounting plate (3) by bolts. The bottom of each mounting plate (3) and inside the housing (1) is fixedly connected to a heat exchange tube (27). Both ends of the heat exchange tube (27) extend to the top of the mounting plate (3) and are fixedly connected to a liquid end (4). Heat sinks (28) are fixedly connected to both sides of the shell (1). Drive rails (6) are fixedly connected to the top of the inner cavity of the shell (1) and to the front and rear of the heat exchange tube (27). Drive grooves (17) are opened inside the drive rails (6). Threaded rods (7) are rotatably connected to the drive grooves (17) through bearings. Sliders (8) are sleeved on the outside of the threaded rods (7). The sliders (8) cooperate with the threaded rods (7). The bottom of the sliders (8) extends to the bottom of the drive rails (6) and is fixedly connected to nozzles (21). Several nozzles (22) are fixedly connected to the surface of the nozzles (21).

2. An air heater according to claim 1, characterized in that: The first motor (5) is fixedly installed on one side of the housing (1) by a motor mounting base. The output end of the first motor (5) is connected to one end of the threaded rod (7) by a coupling.

3. An air heater according to claim 2, characterized in that: A winding box (12) is fixedly connected to one side of the housing (1) and between the two first motors (5). A rotating shaft (15) is rotatably installed inside the winding box (12) via bearings. A winding roller (16) is fixedly sleeved on the outer side of both ends of the rotating shaft (15). A flexible hose (10) is wound around the outer side of the winding roller (16). A guide groove (9) is opened inside the drive rail (6) and on one side of the drive groove (17). One end of the flexible hose (10) is inserted into the guide groove (9) and extends into the nozzle (21). A connecting pipe (18) is fixedly installed inside the rotating shaft (15). The connecting pipe (18) is connected to one end of the flexible hose (10) via a connecting joint. A rotary joint (14) is installed on one side of the winding box (12). One end of the rotary joint (14) is connected to one end of the connecting pipe (18).

4. An air heater according to claim 3, characterized in that: A pressurized air pump (19) is fixedly connected to one side of the winding box (12), and one end of the pressurized air pump (19) is connected to one end of the rotary joint (14).

5. An air heater according to claim 4, characterized in that: On the other side of the winding box (12), a second motor (20) is fixedly installed by a motor mounting base. The output end of the second motor (20) is connected to one end of the rotating shaft (15) by a coupling. Dustproof elastic sleeves (11) are fixedly connected to both sides of the inner cavity of the drive groove (17). One end of the dustproof elastic sleeves (11) is connected to the outside of the slider (8).

6. An air heater according to claim 5, characterized in that: The bottom of the housing (1) is fixedly connected to a base (23), the bottom of the base (23) is fixedly connected to a connecting valve (24), the bottom end of the connecting valve (24) is fixedly connected to an integrated box (29), the bottom of the integrated box (29) is fixedly connected to a vacuum pump (25), a dust filter (30) is placed inside the integrated box (29), one end of the dust filter (30) extends to the outside of the integrated box (29) and is fixedly connected to one side of the integrated box (29) by screws, and the bottom of the dust filter (30) has several filter holes.

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