Air heat exchanger for boiler

Abstract

The utility model discloses an air heat exchanger for a boiler, which belongs to the technical field of boiler equipment and comprises a heat exchanger body, an air inlet pipeline is arranged on one side of the heat exchanger body, a flue gas purification box is fixedly mounted on the outer side of the air inlet pipeline, and a filter plate is arranged in the flue gas purification box. Cleaning assemblies used for cleaning the filter plate are symmetrically arranged in the flue gas purification box, each cleaning assembly comprises a motor fixedly mounted in the air purification box, one end of a screw rod is rotationally connected to the motor, and the other end of the screw rod is rotationally connected with the top in the air purification box. The motor is started to drive the screw rod to rotate, the sliding rod is arranged on the cleaning plate on the screw rod, so that the motor is started, the cleaning plate moves up and down on the sliding rod and the screw rod, dust residues on the filter plate are cleaned, and the advantage that smoke dust cannot be left on the filter plate to block the filter plate is achieved; therefore, the ventilation efficiency is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler equipment, in particular to an air heat exchanger for a boiler. Background Art

[0002] An air heat exchanger is a device used for heat exchange. Its primary function is to transfer heat from one fluid (usually air or liquid) to another. It is widely used in various industrial and residential applications, particularly in boilers, air conditioning, and ventilation systems. In traditional boiler systems, the piping between the air heat exchanger and the boiler is often equipped with filters to remove impurities and particulate matter from the flue gas. While filters effectively protect the heat exchanger and extend its service life, they present some significant challenges in practical applications.

[0003] The filter's location inside the duct makes cleaning relatively difficult. As particulate matter accumulates in the flue gas, the filter becomes clogged, reducing the air intake rate. This not only affects the heat exchange efficiency of the air heat exchanger but can also degrade the overall performance of the boiler. Leaving the filter uncleaned for extended periods can also lead to a series of safety hazards, such as flue gas backflow and boiler overheating, increasing the risk of equipment failure.

[0004] The purpose of the utility model is to provide an air heat exchanger for a boiler to solve the problems raised in the background technology. Utility Model Content

[0005] The purpose of the utility model is to provide an air heat exchanger for a boiler to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an air heat exchanger for a boiler, comprising a heat exchanger body, an air intake duct provided on one side of the heat exchanger body, a flue gas purification box fixedly mounted on the outside of the air intake duct, a filter plate provided in the flue gas purification box, and cleaning components for cleaning the filter plates symmetrically provided in the flue gas purification box;

[0007] A single cleaning assembly includes a motor fixedly installed in the air purification box, one end of the screw is rotatably connected to the motor, the other end of the screw is rotatably connected to the top of the air purification box, the outer side of the screw is threadedly connected to a cleaning plate for cleaning the filter plate, a sliding rod is slidably connected through the top of the cleaning plate, one end of the sliding rod is connected to a mounting block, and the mounting block is fixedly installed inside the flue gas purification box, and the other end of the sliding rod is connected to the top of the flue gas purification box.

[0008] Furthermore, a limit plate is fixedly installed symmetrically in the upper and lower parts of the flue gas purification box, and the filter plate is slidably connected to the limit plate. The filter plate is located between the two cleaning components, and a limit switch is provided on the limit plate at the bottom of the flue gas purification box to prevent the filter plate from sliding out of the limit plate.

[0009] Furthermore, a residue collection box for collecting dust on the cleaning plate is provided at the bottom of the flue gas purification box.

[0010] Furthermore, a mounting plate is fixedly installed in the collection box, a slot is provided on the mounting plate, a fixing block is fixedly installed between the mounting plate and the bottom of the collection box, and a sliding column is slidably connected in the fixing block.

[0011] Furthermore, the end of the sliding column is connected to a push plate for pushing the residue out of the residue collection box, and a first spring is sleeved on the outside of the sliding column, one end of the first spring is connected to the push plate, and the other end is connected to the fixed block.

[0012] Furthermore, a mounting groove is provided at the front end of the sliding column, one end of a second spring is connected to the mounting groove, and the other end of the second spring is connected to a limiting block.

[0013] Furthermore, an air extraction valve is provided on the outside of the air inlet pipe, and an air outlet pipe is provided on the top of the heat exchanger body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model provides a cleaning component, when the motor is started, the screw is driven to rotate, and since the cleaning plate on the screw is provided with a sliding rod, when the motor is started, the cleaning plate moves up and down on the sliding rod and the screw, thereby cleaning the dust residue on the filter plate. The advantage of this is that the smoke dust will not remain on the filter plate and cause the filter plate to be blocked, so that the ventilation efficiency will not be affected. In addition, the smoke dust residue cleaned from the filter plate will fall into the residue collection box, the box door of the residue collection box is opened, and then the limit block is pressed downward, the first spring recovers its deformation, and then the push plate is pulled to move, thereby pushing the smoke dust residue in the residue collection box out of the residue collection box. The advantage of this is that it avoids the inconvenience of manual cleaning and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the flue gas purification box in the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the residue collection box in the utility model;

[0020] Figure 4 This is a schematic structural diagram of the sliding column in the utility model;

[0021] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Description of reference numerals:

[0023] In the picture:

[0024] 1. Heat exchanger body; 2. Air inlet duct; 3. Flue gas purification box; 4. Residue collection box; 5. Air outlet duct; 6. Exhaust valve; 7. Filter plate; 8. Limit plate; 9. Limit switch; 10. Motor; 11. Cleaning plate; 12. Screw; 13. Sliding rod; 14. Mounting block; 15. Push plate; 16. Sliding column; 17. First spring; 18. Fixed block; 19. Mounting plate; 20. Limit block; 21. Mounting slot; 22. Second spring; 23. Card slot. DETAILED DESCRIPTION

[0025] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0026] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0027] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., subject to actual needs.

[0028] See also Figures 1 to 5As shown, an air heat exchanger for a boiler includes a heat exchanger body 1, an air extraction valve 6 is provided on the outside of an air inlet pipe 2, and the air extraction valve 6 is provided here to extract the filtered gas into the heat exchanger body 1, an air outlet pipe 5 is provided on the top of the heat exchanger body 1, an air inlet pipe 2 is provided on one side of the heat exchanger body 1, a flue gas purification box 3 is fixedly installed on the outside of the air inlet pipe 2, a filter plate 7 is provided in the flue gas purification box 3, and a cleaning component for cleaning the filter plate 7 is symmetrically provided in the flue gas purification box 3;

[0029] A single cleaning assembly includes a motor 10 fixedly installed in the air purification box, one end of which is rotatably connected to a screw 12 on the motor 10, and the other end of the screw 12 is rotatably connected to the top of the air purification box. A cleaning plate 11 for cleaning the filter plate 7 is threadedly connected to the outer side of the screw 12, and a sliding rod 13 is slidably connected to the top of the cleaning plate 11. One end of the sliding rod 13 is connected to a mounting block 14, and the mounting block 14 is fixedly installed inside the flue gas purification box 3, and the other end of the sliding rod 13 is connected to the top of the flue gas purification box 3. When the motor 10 is started, it drives the screw 12 to rotate, and then the cleaning plate 11 outside the screw 12 and the sliding rod 13 moves.

[0030] A limit plate 8 is fixedly installed symmetrically in the upper and lower parts of the flue gas purification box 3, and the filter plate 7 is slidably connected to the limit plate 8. The filter plate 7 is located between the two cleaning components. The limit plate 8 located at the bottom of the flue gas purification box 3 is provided with a limit switch 9 for preventing the filter plate 7 from sliding out of the limit plate 8. The limit switch 9 and the limit plate 8 are fixed by bolts. After the filter plate 7 is inserted into the limit plate 8, the limit switch 9 can be used to fix it in the limit plate 8.

[0031] A residue collection box 4 for collecting dust on the cleaning plate 11 is provided at the bottom of the flue gas purification box 3. A mounting plate 19 is fixedly installed in the collection box, and a slot 23 is provided on the mounting plate 19. A fixed block 18 is fixedly installed between the mounting plate 19 and the bottom of the collection box. A sliding column 16 is slidably connected in the fixed block 18. The end of the sliding column 16 is connected to a push plate 15 for pushing the residue out of the residue collection box 4. A first spring 17 is sleeved on the outside of the sliding column 16. One end of the first spring 17 is connected to the push plate 15, and the other end is connected to the fixed block 18. When the push plate 15 is at the innermost part of the residue collection box 4, the first spring 17 is in a stretched state. A mounting groove 21 is provided at the front end of the sliding column 16, and one end of the second spring 22 is connected in the mounting groove 21. The other end of the second spring 22 is connected to the limiting block 20. The slot 23 cooperates with the limiting block 20 to fix the sliding column 16.

[0032] The ventilator body 1, the exhaust valve 6, and the motor 10 are all related to the existing technology. The working principle, size and model are irrelevant to the problem solved by this application, so they are not described in detail. The control method of the present invention is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the present invention no longer explains the control method and circuit connection in detail.

[0033] Working principle: After the flue gas in the boiler enters the air intake pipe 2, it enters the flue gas purification box 3, is filtered through the filter plate 7 and then is sucked into the heat exchanger body 1 through the exhaust valve 6. When the filter plate 7 needs to be cleaned, the motor 10 is started, and the motor 10 drives the screw 12 to rotate. Since the cleaning plate 11 on the screw 12 is provided with a sliding rod 13, the motor 10 is started, and the cleaning plate 11 moves up and down on the sliding rod 13 and the screw 12, thereby cleaning the dust residue on the filter plate 7, and the dust residue enters the residue collection box 4 through the gap. When the residue in the residue collection box 4 needs to be cleaned, the door of the residue collection box 4 is opened, and the limit block 20 is pressed down. The limit block 20 enters the mounting slot 21 of the sliding column 16 through the slot, so that the second spring 22 is compressed. After the restriction is released, the first spring 17 restores its deformation, and then the sliding column 16 pulls the push plate 15 outward, thereby pushing out all the residue.

[0034] It should be noted that, in this article, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler air heat exchanger, comprising a heat exchanger body (1), characterized in that: An air intake pipe (2) is provided on one side of the heat exchanger body (1), a flue gas purification box (3) is fixedly installed on the outside of the air intake pipe (2), a filter plate (7) is provided in the flue gas purification box (3), and a cleaning component for cleaning the filter plate (7) is symmetrically provided in the flue gas purification box (3); A single cleaning assembly includes a motor (10) fixedly mounted in an air purification box, one end of a screw (12) being rotatably connected to the motor (10), the other end of the screw (12) being rotatably connected to the top of the air purification box, a cleaning plate (11) for cleaning the filter plate (7) being threadedly connected to the outer side of the screw (12), a sliding rod (13) being slidably connected through the top of the cleaning plate (11), one end of the sliding rod (13) being connected to a mounting block (14), and the mounting block (14) being fixedly mounted inside the flue gas purification box (3), and the other end of the sliding rod (13) being connected to the top of the flue gas purification box (3).

2. The air heat exchanger for a boiler according to claim 1, characterized in that: A limit plate (8) is fixedly installed symmetrically in the upper and lower parts of the flue gas purification box (3), and the filter plate (7) is slidably connected to the limit plate (8). The filter plate (7) is located between the two cleaning components. A limit switch (9) is provided on the limit plate (8) at the bottom of the flue gas purification box (3) for preventing the filter plate (7) from sliding out of the limit plate (8).

3. The air heat exchanger for a boiler according to claim 1, characterized in that: A residue collection box (4) for collecting dust on the cleaning plate (11) is provided at the bottom of the flue gas purification box (3).

4. The air heat exchanger for a boiler according to claim 3, characterized in that: A mounting plate (19) is fixedly installed in the collection box, a slot (23) is provided on the mounting plate (19), a fixed block (18) is fixedly installed between the mounting plate (19) and the bottom of the residue collection box (4), and a sliding column (16) is slidably connected in the fixed block (18).

5. The air heat exchanger for a boiler according to claim 4, characterized in that: The end of the sliding column (16) is connected to a push plate (15) for pushing the residue out of the residue collection box (4). A first spring (17) is sleeved on the outside of the sliding column (16). One end of the first spring (17) is connected to the push plate (15) and the other end is connected to the fixed block (18).

6. The air heat exchanger for a boiler according to claim 5, characterized in that: The front end of the sliding column (16) is provided with a mounting groove (21), one end of a second spring (22) is connected to the mounting groove (21), and the other end of the second spring (22) is connected to a limiting block (20).

7. The air heat exchanger for a boiler according to claim 1, characterized in that: An air extraction valve (6) is provided on the outside of the air inlet pipe (2), and an air outlet pipe (5) is provided on the top of the heat exchanger body (1).

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