An air conveying device for low nitrogen burner

Abstract

The utility model discloses an air conveying device for a low-nitrogen burner, comprising a low-nitrogen burner, an air inlet cylinder is provided on one side of the low-nitrogen burner, an end cover is provided on one side of the air inlet cylinder, a mounting device is provided between the end cover and the air inlet cylinder, an air inlet pipe is provided on the upper end of the air inlet cylinder, a filtering device is provided in the air inlet pipe, and a pressure control device is provided in the end cover. The utility model belongs to the technical field of air intake for low-nitrogen burners, and specifically solves the problem that the existing low-nitrogen burners cannot control the air pressure in the air intake pipe during air delivery, which easily causes the air intake pipe to burst, and lacks filtering measures for the incoming air.

Description

Technical Field

[0001] The utility model belongs to the technical field of air intake for low-nitrogen burners, and specifically refers to an air conveying device for low-nitrogen burners. Background Art

[0002] A low-nitrogen burner is a device that adds a blower, induced draft fan, inverter, control valve and multiple circuits to a traditional burner to allow clean energy and burner operation to provide more efficient heat energy for the boiler.

[0003] When existing low-nitrogen burners transport air, the delivery pipes are mostly made of hard pipes. If the pressure in the pipe changes suddenly, it is easy to cause the delivery pipe to rupture or even explode. There is a lack of pressure control for air delivery, and there is a lack of air filtering measures when entering the air. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing low-nitrogen burner cannot control the air pressure in the air intake pipe during air delivery, which easily leads to the bursting of the air intake pipe, and at the same time lacks filtering measures for the incoming air.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: an air conveying device for a low-nitrogen burner, comprising a low-nitrogen burner, an air intake cylinder is provided on one side of the low-nitrogen burner, an end cover is provided on one side of the air intake cylinder, a mounting device is provided between the end cover and the air intake cylinder, an air intake pipe is provided at the upper end of the air intake cylinder, a filtering device is provided in the air intake pipe, and a pressure control device is provided in the end cover; the pressure control device comprises a connecting rod, the connecting rod runs through the center of the end cover, a piston plate is provided at the end of the connecting rod and is located in the air intake cylinder, a sealing ring is provided on the circumference of the piston plate, a spring is sleeved on the connecting rod, one end of the spring is fixed to the piston plate and the other end is fixed to the inner wall of the end cover, a guide rod is provided on the piston plate and runs through the end cover, when the air pressure in the air intake cylinder is abnormal and the pressure increases suddenly, the air will squeeze the piston plate, and the connecting rod will slide in the end cover, thereby increasing the space in the air intake cylinder, realizing the control of the air pressure, and avoiding the bursting of the air intake cylinder caused by excessive air pressure.

[0006] Furthermore, the filtering device includes a fixing plate, which is located on the side wall of the air inlet pipe. A screw is provided in the fixing plate through a threaded connection. A filter screen is connected to the other end of the screw screen. The filter screen can be inserted into the air inlet pipe. A second guide rod is provided on the filter screen. The second guide rod runs through the fixing plate. A hand wheel is provided at the end of the screw screen. The air in the air inlet pipe can be filtered by the filtering device, and the filter screen can also be dragged out of the air inlet pipe for cleaning.

[0007] Furthermore, the installation device includes a sleeve, which is located on the inner side of the end cover and can be sleeved on the air intake cylinder. The sleeve is provided with threaded holes around its circumference, and bolts can be fastened to the sleeve through the threaded holes, so as to facilitate the disassembly of the end cover.

[0008] Preferably, a connecting cylinder is provided at the outer end of the filter screen, and the end of the screw rod rotates in the connecting cylinder.

[0009] Preferably, the ends of the connecting rod and the guide rod are both provided with end caps.

[0010] The utility model adopts the above structure to achieve the following beneficial effects:

[0011] 1. The utility model can control the air pressure in the air intake cylinder by arranging a pressure control device. When the pressure in the air intake cylinder suddenly increases, the piston plate will be squeezed, and the spring can buffer the release force to prevent the pressure from causing the air intake cylinder to burst.

[0012] 2. The utility model can filter impurities from the air entering the air intake pipe by setting a filter device, and the filter can be disassembled and cleaned by turning the hand wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall stereogram of an air delivery device for a low-nitrogen burner according to the utility model;

[0014] Figure 2 It is a three-dimensional diagram of a pressure control device of an air delivery device for a low-nitrogen burner according to the utility model;

[0015] Figure 3 for Figure 1 A partial enlarged view of the middle part;

[0016] Figure 4 A three-dimensional diagram of the filter.

[0017] Among them, 1. low nitrogen burner, 2. air intake cylinder, 3. end cover, 4. air intake pipe, 5. mounting device, 6. filtering device, 7. pressure control device, 8. connecting rod, 9. piston plate, 10. sealing ring, 11. spring, 12. guide rod 1, 13. fixing plate, 14. screw rod, 15. filter screen, 16. guide rod 2, 17. hand wheel, 18. socket cylinder, 19. threaded hole, 20. connecting cylinder, 21. end cap. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] like Figure 1-4 The utility model discloses an air conveying device for a low-nitrogen burner, comprising a low-nitrogen burner 1, an air inlet cylinder 2 is arranged on one side of the low-nitrogen burner 1, an end cover 3 is arranged on one side of the air inlet cylinder 2, a mounting device 5 is arranged between the end cover 3 and the air inlet cylinder 2, an air inlet pipe 4 is arranged on the upper end of the air inlet cylinder 2, a filter device 6 is arranged in the air inlet pipe 4, and a pressure control device 7 is arranged in the end cover 3;

[0021] like Figure 1-2 The pressure control device 7 includes a connecting rod 8, which runs through the center of the end cover 3. A piston plate 9 is provided at the end of the connecting rod 8 and is located in the air intake cylinder 2. A sealing ring 10 is provided around the piston plate 9. A spring 11 is sleeved on the connecting rod 8. One end of the spring 11 is fixed to the piston plate 9 and the other end is fixed to the inner wall of the end cover 3. A guide rod 12 is provided on the piston plate 9 and runs through the end cover 3. End caps 21 are provided at the ends of the connecting rod 8 and the guide rod 12. When the air pressure in the air intake cylinder 2 is abnormal and the pressure suddenly increases, the air will squeeze the piston plate 9, and the connecting rod 8 will slide in the end cover 3, thereby increasing the space in the air intake cylinder 2, thereby achieving control of the air pressure and avoiding the bursting of the air intake cylinder 2 caused by excessive air pressure.

[0022] like Figure 1 , 34, the filter device 6 includes a fixed plate 13, the fixed plate 13 is located on the side wall of the intake pipe 4, the fixed plate 13 is internally threadedly connected with a screw rod 14, the other end of the screw rod 14 is connected to a filter screen 15, the outer end of the filter screen 15 is provided with a connecting cylinder 20, the end of the screw rod 14 rotates in the connecting cylinder 20, the filter screen 15 can be inserted into the intake pipe 4, the filter screen 15 is provided with a guide rod 2 16, the guide rod 2 16 runs through the fixed plate 13, the end of the screw rod 14 is provided with a hand wheel 17, the filter device 6 can be used to filter the air in the intake pipe 4, and the filter screen 15 can also be dragged out of the intake pipe 4 for cleaning.

[0023] like Figure 2 The mounting device 5 includes a sleeve 18, which is located on the inner side of the end cover 3 and can be sleeved on the air intake cylinder 2. The sleeve 18 is provided with threaded holes 19 around it, and bolts can be fastened to the sleeve 18 through the threaded holes 19, so as to facilitate the disassembly of the end cover 3.

[0024] During specific use, during installation, the sleeve 18 is sleeved on the air intake cylinder 2, the threaded hole 19 corresponds, and the end cover 3 is fastened and installed by bolts. The air enters the air intake pipe 4, and the air enters the low-nitrogen burner 1 through the air intake cylinder 2 to participate in combustion. When the pressure in the air intake cylinder 2 suddenly increases, the air pressure will squeeze the piston plate 9, and the connecting rod 8 and the guide rod 12 will slide in the end cover 3. The space in the air intake cylinder 2 will increase, thereby realizing the pressure relief of the air pressure and avoiding the sudden increase in pressure causing the air intake cylinder 2 to burst.

[0025] When air enters the air intake pipe 4, it will be filtered through the filter 15 to keep the incoming air clean. When the filter 15 needs to be disassembled or cleaned, the hand wheel 17 is turned, and the screw rod 14 is screwed into the fixed plate 13. The screw rod 14 pulls the filter 15 to slide, and the guide rod 16 will slide in the fixed plate 13 until the filter 15 is completely out of the air intake pipe 4. Then the filter 15 can be cleaned.

[0026] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An air delivery device for a low nitrogen burner, comprising a low nitrogen burner, characterized in that: An air inlet cylinder is provided on one side of the low-nitrogen burner, an end cover is provided on one side of the air inlet cylinder, a mounting device is provided between the end cover and the air inlet cylinder, an air inlet pipe is provided on the upper end of the air inlet cylinder, a filtering device is provided in the air inlet pipe, and a pressure control device is provided in the end cover.

2. The air delivery device for a low nitrogen burner according to claim 1, characterized in that: The pressure control device includes a connecting rod, which passes through the center of the end cover. A piston plate is provided at the end of the connecting rod and is located in the air intake cylinder. A sealing ring is provided around the piston plate. A spring is sleeved on the connecting rod, one end of the spring is fixed to the piston plate and the other end is fixed to the inner wall of the end cover. A guide rod is provided on the piston plate and passes through the end cover.

3. The air delivery device for a low nitrogen burner according to claim 2, characterized in that: The filtering device includes a fixing plate, which is located on the side wall of the air inlet pipe. A screw is provided in the fixing plate through a threaded connection. A filter screen is connected to the other end of the screw screen. The filter screen can be inserted into the air inlet pipe. A guide rod 2 is provided on the filter screen. The guide rod 2 passes through the fixing plate. A hand wheel is provided at the end of the screw screen.

4. The air delivery device for a low nitrogen burner according to claim 3, characterized in that: The installation device comprises a sleeve tube, which is located on the inner side of the end cover and can be sleeved on the air intake cylinder. The circumference of the sleeve tube is provided with threaded holes.

5. The air delivery device for a low nitrogen burner according to claim 4, characterized in that: The outer end of the filter screen is provided with a connecting tube, and the end of the screw rod is rotated in the connecting tube.

6. The air delivery device for a low nitrogen burner according to claim 5, characterized in that: The ends of the connecting rod and the guide rod are both provided with end caps.

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