Air heating device

Abstract

The utility model relates to the technical field of air heating equipment, in particular to an air heating device which comprises an air heating box, an air inlet is formed in the front face of the air heating box, an air adding pipe is connected to the top face of the air heating box, a flow meter is installed at the outer end of the air adding pipe, and two connecting pipes are installed on the back face of the air heating box. A high-temperature air pump is installed on the connecting pipe, a plurality of finned tubes are fixedly installed in the air heating box, a filtering frame is fixedly installed on the inner side of the air inlet, a filtering net is arranged in the filtering frame, and a cleaning assembly is installed on the inner side surface of the filtering frame and used for cleaning the filtering net. According to the air heating device, by arranging the cleaning rod, when the filter screen is used for a long time, a worker can hold the push rod and slide up and down to drive the cleaning rod to clean the screen surface of the filter screen, and the cleaned dust falls out of the air heating box, so that the filter screen is prevented from being blocked by the dust and fluff, and the speed of air entering the air heating box is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of air heating equipment, in particular to an air heating device. Background Art

[0002] In the production process of wet-process phosphoric acid, the fluorine content and other impurities in the wet-process phosphoric acid are purified to meet the production requirements; the quality of the defluorination technology directly affects the yield and quality of the final product phosphorus. Tower gas stripping defluorination is generally used. Tower gas stripping defluorination requires heating the air and transporting it to the tower gas stripping defluorination for use.

[0003] According to the Chinese patent application number: CN202320857772.1, an air energy heating device is disclosed, which belongs to the field of air energy heating technology. The air energy heating device includes a supporting protection structure and a heating structure. The supporting protection structure includes a protection box and a support member, and the support member is fixed to the bottom of the protection box. The heating structure includes a guide pipe, a traction member and a pre-treatment member. The guide pipe is fixed to the inside of the protection box, and the two ends of the guide pipe extend to the outside of the protection box. The two ends of the guide pipe are respectively fixed with an air outlet hood and an air inlet hood. An electric heating plate and a deflector are installed inside the guide pipe. The traction member is installed on the air outlet hood, and the pre-treatment member is installed on the air inlet hood. The structure of the utility model is more compact, which is conducive to reducing the volume for convenient installation and transportation. At the same time, it can make the heating more fully used and more convenient during the heating process.

[0004] At present, there are still some shortcomings in an air energy heating device. For example, after the filter is used for a long time, dust and lint will remain in the mesh of the filter, which is inconvenient for the staff to clean, affecting the rate at which air enters the heating box. Utility Model Content

[0005] The purpose of the utility model is to provide an air heating device to solve the problem raised in the above background technology that after the filter is used for a long time, dust and lint will remain in the mesh of the filter, which is inconvenient for the staff to clean and affects the rate at which air enters the heating box.

[0006] To achieve the above-mentioned purpose, the utility model provides an air heating device, including an air heating box, an air inlet is opened on the front of the air heating box, an air filling pipe is connected to the top surface of the air heating box, a flow meter is installed on the outer end of the air filling pipe, two connecting pipes are installed on the back of the air heating box, a high-temperature air pump is installed on the connecting pipes, a plurality of fin tubes are fixedly installed inside the air heating box, a filter frame is fixedly installed on the inner side of the air inlet, a filter screen is arranged inside the filter frame, a cleaning component is installed on the inner surface of the filter frame, and the cleaning component is used to clean the filter screen.

[0007] Preferably, the cleaning component includes two placement racks, which are arranged at the bottom of the air heating box near both sides of the filter frame. The air heating box is provided with movable openings at the outer walls on both sides near the air inlet. A cleaning rod is horizontally arranged between the two movable openings. Push rods are installed at both ends of the cleaning rod. The push rods pass through the movable openings and extend to the outside of the air heating box.

[0008] Preferably, an air inlet plate is installed inside the air heating box near the air inlet, and two mounting holes are provided on the surface of the air inlet plate, and a hair dryer is installed inside the mounting holes.

[0009] Preferably, a plurality of air guide vanes are fixedly mounted on the outer side of the air heating box near the air inlet.

[0010] Preferably, a pressure gauge is installed on the top surface of the air heating box.

[0011] Preferably, two drain pipes are connected to the bottom surface of the air heating box.

[0012] Preferably, the placement rack is a U-shaped structure, and when the cleaning rod is not in use, both ends of the cleaning rod are clamped on the placement rack.

[0013] Preferably, the finned tubes are arranged vertically at equal intervals inside the air heating box, and the upper and lower ends are welded and fixed to the inner wall of the air heating box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the air heating device, by providing a cleaning rod, when the filter is used for a long time, the staff can hold the push rod and slide up and down to drive the cleaning rod to clean the mesh surface of the filter, and the cleaned dust falls out of the air heating box, thereby preventing the filter from being blocked by dust and lint, affecting the rate at which air enters the air heating box. By providing a hair dryer and starting the hair dryer to pump the outside air into the air heating box, it is beneficial to increase the rate at which air enters the air heating box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model from one angle;

[0017] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0018] Figure 3 It is a structural schematic diagram of the connecting mechanism in the utility model;

[0019] Figure 4It is a schematic diagram of the internal structure of the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Air heating box; 2. Air inlet; 3. Gas filling pipe; 4. Connecting pipe; 5. Filter frame; 6. Filter net; 7. Placement rack; 8. Movable opening; 9. Cleaning rod; 10. Push rod; 11. Air inlet plate; 12. Mounting hole; 13. Blower; 15. Air guide vane; 16. Drain pipe; 17. Pressure gauge; 18. Flow meter; 19. High temperature air pump; 20. Fin tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides an air heating device, such as Figure 1-Figure 3 As shown, it includes an air heating box 1, an air inlet 2 is provided on the front of the air heating box 1 for air to enter, a gas filling pipe 3 is connected to the top surface of the air heating box 1 for steam to enter, a flow meter 18 is installed at the outer end of the gas filling pipe 3 for monitoring the flow rate, two connecting pipes 4 are installed on the back of the air heating box 1, a high-temperature air pump 19 is installed on the connecting pipe 4 for pumping the high-temperature gas to the defluorination tower for use, a plurality of fin tubes 20 are fixedly installed inside the air heating box 1 for heat exchange operation, a filter frame 5 is fixedly installed on the inner side of the air inlet 2, and a filter screen 6 is arranged inside the filter frame 5, A cleaning component is installed on the inner surface of the filter frame 5, and the cleaning component is used to clean the filter screen 6. By setting the gas filling pipe 3, the staff in the tower gas lift defluorination can convey steam into the air heating box 1 through the gas filling pipe 3, and the steam enters the fin tube 20. The heat transfer area is increased through the fin tube 20, and the heat exchange efficiency is improved. The heat of the steam is transferred to the outer wall of the fin tube 20. After the air enters the air heating box 1 through the air inlet 2, heat exchange is performed between the air and the steam through the fin tube 20. The heat of the steam is transferred to the air, so that the temperature of the air rises rapidly, thereby meeting the needs of subsequent tower gas lift defluorination.

[0024] In this embodiment, the cleaning component includes two placement racks 7, and the two placement racks 7 are arranged at the bottom of the air heating box 1 near both sides of the filter frame 5. A movable opening 8 is opened at the outer walls of both sides of the air heating box 1 near the air inlet 2. A cleaning rod 9 is horizontally arranged between the two movable openings 8. Push rods 10 are installed at both ends of the cleaning rod 9. The push rod 10 passes through the movable opening 8 and extends to the outside of the air heating box 1. By setting the cleaning rod 9, when the filter screen 6 is used for a long time, the staff can hold the push rod 10 and slide it up and down to drive the cleaning rod 9 to clean the mesh surface of the filter screen 6. The cleaned dust falls out of the air heating box 1, thereby preventing the filter screen 6 from being blocked by dust and lint, affecting the rate at which air enters the air heating box.

[0025] Specifically, an air inlet plate 11 is installed inside the air heating box 1 near the air inlet 2, and two mounting holes 12 are provided on the surface of the air inlet plate 11. A hair dryer 13 is installed inside the mounting hole 12. By setting the hair dryer 13 and starting the hair dryer 13, the outside air is pumped into the air heating box 1, which is beneficial to increase the rate at which air enters the air heating box.

[0026] Furthermore, a plurality of air guide plates 15 are fixedly installed on the outer side of the air heating box 1 near the air inlet 2 . The provision of the air guide plates 15 facilitates the entry of air into the air heating box 1 .

[0027] Furthermore, a pressure gauge 17 is installed on the top surface of the air heating box 1. By setting the pressure gauge 17, when steam enters the air heating box 1, the staff can observe the pressure in the air heating box 1 in time through the pressure gauge 17, control the amount of steam entering, and avoid excessive pressure.

[0028] Furthermore, two drain pipes 16 are connected to the bottom surface of the air heating box 1. By setting the drain pipes 16, when the steam enters the air heating box 1, after heat exchange and steam cooling, the generated condensed water can be discharged through the drain pipes 16, thereby avoiding the condensed water not being discharged in time and affecting the flow of steam in the air heating box 1.

[0029] Furthermore, the placement rack 7 is a U-shaped structure. When the cleaning rod 9 is not in use, both ends of the cleaning rod 9 are clamped on the placement rack 7, so as to facilitate fixing the cleaning rod 9.

[0030] Furthermore, the fin tubes 20 are arranged vertically at equal intervals inside the air heating box 1, and the upper and lower ends are welded and fixed to the inner wall of the air heating box 1 to facilitate uniform contact between air and each fin tube 20. The top end of the fin tube 20 is connected to the air filling pipe 3 to facilitate the introduction of high-temperature steam, and the bottom end of the fin tube 20 is connected to the drain pipe 16 to facilitate the discharge of condensed water after heat exchange.

[0031] When the air heating device of the utility model is in use, first, the connecting pipe 4 of the air heating box 1 is connected to the defluorination tower through a flange, and then the hair dryer 13 is started to pump the outside air into the air heating box 1. During the air pumping process, dust and lint in the air are filtered through the filter screen 6. In the tower-type gas lift defluorination, the staff can convey steam into the air heating box 1 through the gas filling pipe 3, and the steam enters the fin tube 20. The heat transfer area is increased through the fin tube 20, and the heat exchange efficiency is improved. The heat of the steam is transferred to the outer wall of the fin tube 20. After the air enters the air heating box 1 through the air inlet 2, heat exchange is performed between the air and the steam through the fin tube 20. The heat of the steam is transferred to the air, so that the temperature of the air rises rapidly. The heated air is pumped to the defluorination tower for use through the high-temperature air pump 19 installed on the connecting pipe 4. After the steam is cooled, the generated condensed water can be discharged through the drain pipe 16 to avoid the condensed water being not discharged in time and affecting the flow of steam in the air heating box 1.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An air heating device, comprising an air heating box (1), characterized in that: The front of the air heating box (1) is provided with an air inlet (2), the top surface of the air heating box (1) is connected to an air supply pipe (3), the outer end of the air supply pipe (3) is installed with a flow meter (18), the back of the air heating box (1) is installed with two connecting pipes (4), the connecting pipes (4) are installed with a high-temperature air pump (19), a plurality of fin tubes (20) are fixedly installed inside the air heating box (1), a filter frame (5) is fixedly installed on the inner side of the air inlet (2), a filter screen (6) is arranged inside the filter frame (5), and a cleaning component is installed on the inner surface of the filter frame (5).

2. The air heating device according to claim 1, characterized in that: The cleaning component comprises two placement racks (7), the two placement racks (7) being arranged at the bottom of the air heating box (1) near both sides of the filter frame (5), the air heating box (1) being provided with movable openings (8) at the outer walls on both sides near the air inlet (2), a cleaning rod (9) being arranged horizontally between the two movable openings (8), and push rods (10) being installed at both ends of the cleaning rod (9), the push rods (10) passing through the movable openings (8) and extending to the outside of the air heating box (1).

3. The air heating device according to claim 1, characterized in that: An air inlet plate (11) is installed inside the air heating box (1) near the air inlet (2), and two mounting holes (12) are provided on the surface of the air inlet plate (11), and a hair dryer (13) is installed inside the mounting hole (12).

4. The air heating device according to claim 1, characterized in that: A plurality of air guide blades (15) are fixedly mounted on the outside of the air heating box (1) near the air inlet (2).

5. The air heating device according to claim 1, characterized in that: A pressure gauge (17) is installed on the top surface of the air heating box (1).

6. The air heating device according to claim 1, characterized in that: The bottom surface of the air heating box (1) is connected to two drainage pipes (16).

7. The air heating device according to claim 2, characterized in that: The placement rack (7) is a U-shaped structure, and when the cleaning rod (9) is not in use, the two ends of the cleaning rod (9) are clamped on the placement rack (7).

8. The air heating device according to claim 1, characterized in that: The fin tubes (20) are arranged vertically at equal intervals inside the air heating box (1), and the upper and lower ends are welded and fixed to the inner wall of the air heating box (1).

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