Air supply device for boiler burner

Abstract

The utility model relates to an air supply device for a boiler burner. The air supply device comprises a base; the air feeder body is arranged on the base, and the air outlet end of the air feeder body is used for being connected with a boiler burner; the air inlet box is arranged on the base, one end of the air inlet box is connected to the air inlet end of the air feeder body, the other end of the air inlet box is used for being communicated with the outside, and the air inlet box is hollow and provided with a filtering piece used for filtering air entering the air inlet box; the cleaning part is arranged in the air inlet box and located on the side, away from the air feeder body, of the filtering piece, the cleaning part comprises a first connecting piece, a push plate and a cleaning head, one end of the first connecting piece is connected with the top wall of the air inlet box, the other end of the first connecting piece is connected with the push plate, the end, away from the first connecting piece, of the push plate is connected with the cleaning head, and the cleaning head can make contact with the filtering piece; the extending direction of the push plate at least partially forms an included angle with the airflow direction in the air inlet box, so that the airflow drives the push plate to drive the cleaning head to move when air enters the air supply device.

Description

Technical Field

[0001] This disclosure relates to the field of boiler equipment technology, and more specifically, to an air supply device for a boiler burner. Background Technology

[0002] In thermal power plants, burners are responsible for igniting and burning fuel, and they often require an air supply system during operation. Existing air supply systems draw outside air into the system through inlet ducts. However, these inlet ducts are often only equipped with simple protective meshes, which are prone to accumulating impurities. Excessive accumulation of these impurities can negatively impact the air intake, reducing the system's efficiency and consequently affecting the burner's performance, leading to incomplete fuel combustion. Utility Model Content

[0003] The purpose of this disclosure is to provide an air supply device for a boiler burner to solve the problem of low air intake efficiency in related technologies.

[0004] To achieve the above objectives, this disclosure provides an air supply device for a boiler burner, comprising:

[0005] Base;

[0006] The blower body is mounted on the base, and the air outlet of the blower body is used to connect to the boiler burner.

[0007] An air inlet box is mounted on the base. One end of the air inlet box is connected to the air inlet end of the blower body, and the other end is used to communicate with the outside. The interior of the air inlet box is hollow and equipped with a filter element for filtering the gas entering the air inlet box; and

[0008] A cleaning section is disposed in the air inlet box and located on the side of the filter element away from the blower body. The cleaning section includes a first connector, a push plate, and a cleaning head. One end of the first connector is connected to the top wall of the air inlet box, and the other end is connected to the push plate. The end of the push plate away from the first connector is connected to the cleaning head, and the cleaning head can contact the filter element. The extension direction of the push plate is at least partially at an angle to the airflow direction in the air inlet box, so as to drive the push plate to move the cleaning head when the air supply device intakes air.

[0009] Optionally, the pusher plate includes:

[0010] The connecting segment is connected to the first connecting member;

[0011] A driving section is formed at the end of the connecting section away from the blower body, and the angle between the driving section and the connecting section is obtuse; and

[0012] A fixed section is connected to the end of the connecting section away from the pushing section, and the fixed section is connected to the cleaning head. A first groove is formed on the side of the fixed section near the filter element, which is recessed in a direction away from the filter element, and the cleaning head is disposed in the first groove.

[0013] Optionally, the side of the push segment away from the first connector has multiple second grooves spaced apart.

[0014] Optionally, the cleaning head includes:

[0015] A cleaning brush includes a handle and a brush head connected to each other, the handle being connected to the push plate, and the brush head contacting the filter element;

[0016] A rotating shaft, the rotating shaft being connected to the push plate; and

[0017] A wiping roller is rotatably mounted on the rotating shaft, and the wiping roller and the cleaning brush are spaced apart in the height direction of the air supply device and are able to contact the filter element.

[0018] Optionally, there are multiple push plates, which are spaced apart in the air inlet box. There are multiple cleaning heads, which are arranged in one-to-one correspondence with the push plates. The cleaning part also includes multiple second connectors, with each end of the second connector connected to two adjacent push plates.

[0019] Optionally, the air supply device further includes a fixing rod disposed in the air inlet box, the fixing rod extending along the height direction of the air supply device, and the two ends of the fixing rod being connected to the top wall of the air inlet box and the bottom wall of the air inlet box respectively, and the push plate passing through the fixing rod.

[0020] Optionally, both the first connector and the second connector are springs and are both sleeved on the fixed rod.

[0021] Optionally, there may be multiple fixing rods, which are spaced apart in the air inlet box.

[0022] Optionally, the air inlet box includes an air inlet opening, and the filter element includes:

[0023] A first filter screen, the cleaning head being in contact with the first filter screen; and

[0024] The second filter screen is spaced apart from the first filter screen and located on the side of the first filter screen away from the air inlet opening. The air inlet opening is connected to the blower body through the first filter screen and the second filter screen in sequence. The mesh count of the second filter screen is greater than that of the first filter screen.

[0025] Optionally, the top wall of the air inlet box has two mounting openings spaced apart, and each of the two mounting openings is detachably connected to a cover plate. The bottom wall of the air inlet box has two mounting grooves spaced apart. The top of the first filter screen is connected to one of the cover plates, and the bottom of the first filter screen is embedded in one of the mounting grooves. The top of the second filter screen is connected to the other cover plate, and the bottom of the second filter screen is embedded in the other mounting groove.

[0026] Through the above technical solution, a cleaning section is set on the air inlet side of the filter element in the air inlet box. When the blower body is working, a negative pressure is generated, so that the outside air enters the boiler burner through the air inlet box. When the outside air enters the air inlet box, it exerts a pushing force on the pusher plate as it passes through it, which in turn allows the pusher plate to move upward. Since the airflow is variable, the pusher plate can also fall back under the action of gravity, so that the cleaning head moves back and forth to clean the filter element in a timely manner, preventing impurities from adhering to the filter element, thereby improving the ventilation efficiency of the air supply device, reducing the impact on the efficiency of the boiler burner, and allowing the fuel to burn more completely.

[0027] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of an air supply device for a boiler burner according to one embodiment of the present disclosure.

[0030] Figure 2 This is a side view of an air supply device for a boiler burner according to one embodiment of the present disclosure.

[0031] Figure 3 This is a half-sectional view of an air supply device for a boiler burner according to one embodiment of the present disclosure.

[0032] Figure 4 yes Figure 3 An enlarged view of part A based on the basic structure.

[0033] Figure 5This is a schematic diagram of a cleaning device in an air supply device for a boiler burner according to one embodiment of the present disclosure.

[0034] Explanation of reference numerals in the attached figures

[0035] 1-Base; 11-Fixed seat; 2-Blower body; 21-Outlet duct; 22-Inlet duct; 3-Inlet box; 30-Filter element; 301-Inlet opening; 31-First filter screen; 32-Second filter screen; 33-Cover plate; 4-Cleaning section; 41-First connector; 42-Push plate; 421-Connecting section; 422-Pushing section; 4221-Second groove; 423-Fixed section; 4231-First groove; 43-Cleaning head; 431-Cleaning brush; 432-Rotating shaft; 433-Wiping roller; 44-Second connector; 5-Fixed rod. Detailed Implementation

[0036] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0037] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" are defined in relation to the actual arrangement direction of the air supply device during use, specifically as follows: Figure 3 The orientation of the drawing is shown. "Inner" and "outer" are defined relative to the contours of the corresponding components. The terms "first," "second," etc., are used to distinguish different components and do not indicate sequence or importance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0038] According to one embodiment of this disclosure, such as Figures 1 to 5As shown, an air supply device for a boiler burner is provided, which may include a base 1, a blower body 2, an air inlet box 3, and a cleaning unit 4. The blower body 2 can be mounted on the base 1, and its outlet end can be connected to the boiler burner. The air inlet box 3 can be mounted on the base 1, with one end connected to the air inlet end of the blower body 2 and the other end connected to the outside. The air inlet box 3 is hollow and equipped with a filter element 30 for filtering the gas entering the air inlet box 3. The blower body 2 can be used to guide the external gas through the filter element 30 to the boiler burner. The cleaning section 4 can be installed in the air inlet box 3 and located on the side of the filter element 30 away from the blower body 2. The cleaning section includes a first connector 41, a push plate 42 and a cleaning head 43. One end of the first connector 41 is connected to the top wall of the air inlet box 3 and the other end is connected to the push plate 42. The end of the push plate 42 away from the first connector 41 is connected to the cleaning head 43 and the cleaning head 43 can contact the filter element 30. The extension direction of the push plate 42 is at least partially at an angle to the airflow direction in the air inlet box 3, so that when the air supply device is inlet, the airflow drives the push plate 42 to move the cleaning head 43.

[0039] Through the above technical solution, a cleaning section 4 is set on the air inlet side of the filter element 30 in the air inlet box 3. When the blower body 2 is working, a negative pressure is generated, so that the outside air enters the boiler burner through the air inlet box 3. When the outside air enters the air inlet box 3, it will exert a pushing force on the pusher plate 42 when it passes through the pusher plate 42, so that the pusher plate 42 can move upward. Since the airflow is variable, the pusher plate 42 can also fall back under the action of gravity, so that the cleaning head 43 moves back and forth to clean the filter element 30 in time, avoid impurities adhering to the filter element 30, thereby improving the ventilation efficiency of the air supply device, reducing the impact on the efficiency of the boiler burner, and allowing the fuel to burn more completely.

[0040] It should be noted that the first connecting member 41 can be a telescopic rod, a spring, or an elastic rope; this disclosure does not limit its use. Both the push plate 42 and the cleaning head 43 can be made of lightweight materials to facilitate easier displacement of the push plate 42 by airflow; this disclosure does not limit their use either. When the filter element 30 has a small area, only one push plate 42 and one cleaning head 43 can be provided. When the filter element 30 has a large area, multiple push plates 42 and multiple cleaning heads 43, or one push plate 42 and multiple cleaning heads 43, can be provided; the specific structure can be shown later. One end of the first connecting member 41 can be connected to the top wall of the air inlet box 3, and the end of the first connecting member 41 connected to the air inlet box 3 can also be connected to the bottom wall of the air inlet box 3 or the side wall of the air inlet box 3; this disclosure does not limit their use either. When connecting to the side wall of the air inlet box 3, a base plate can also be provided below the first connector 41 to support the first connector 41. The base plate can be connected to the side wall of the air inlet box 3 at one end and extend in the same direction as the first connector 41. This can prevent the first connector 41 from deforming under the gravity of the push plate 42 connected at the other end when it has been used for a long time.

[0041] According to one embodiment of this disclosure, such as Figure 4 and Figure 5As shown, the pusher plate 42 may include a connecting section 421, a pushing section 422, and a fixing section 423. The connecting section 421 may be connected to the first connecting member 41. The pushing section 422 may be formed at the end of the connecting section 421 away from the blower body 2, and the angle between the pushing section 422 and the pushing section 422 may be an obtuse angle. The fixing section 423 may be connected to the end of the connecting section 421 away from the pushing section 422, and the fixing section 423 is connected to the cleaning head 43. A first groove 4231 recessed in the direction away from the filter element 30 is formed on the side of the fixing section 423 near the filter element 30, and the cleaning head 43 is disposed in the first groove 4231. Taking the first connector 41 connected to the top wall of the air inlet box 3 as an example, the first connector 41 extends towards the bottom wall of the air inlet box 3. The connecting section 421 can be horizontally connected to the end of the first connector 41 away from the top wall of the air inlet box 3. The angle between the pushing section 422 and the connecting section 421 is an obtuse angle. In this way, when the air inlet box 3 is filled with air, when the wind blows to the pushing section 422, it can apply force to the pushing section 422. Thus, the pushing section 422 is displaced under the action of the wind, which drives the cleaning head 43 in the fixed section 423 to move, so as to clean the filter element 30. The first groove 4231 can accommodate the cleaning head 43. If the cleaning head 43 is accidentally broken, the side wall of the first groove 4231 at the bottom in the height direction of the air supply device can also support the cleaning head 43. This not only prevents the cleaning head 43 from falling down and affecting other components, but also allows it to continue to clean the filter element 30 under the action of the fixed section 423, since it is still located in the first groove 4231 after the cleaning head 43 is broken.

[0042] Furthermore, such as Figure 4 and Figure 5 As shown, multiple second grooves 4221 can be spaced apart on the side of the pushing section 422 away from the first connector 41. Here, the second grooves 4221 can be directly formed on the pushing section 422, or a protrusion can be first formed on the side of the pushing section 422 away from the first connector 41, and the second grooves 4221 can be formed in this protrusion. The material of this protrusion can be the same as or different from the material of the pushing section 422 body; this disclosure does not limit this. The second grooves 4221 can guide the airflow, making it easier for the airflow to push the pushing section 422 when it comes into contact with it, thereby causing the pusher plate 42 to shift.

[0043] According to one embodiment of this disclosure, such as Figure 4As shown, the cleaning head 43 may include a cleaning brush 431, a rotating shaft 432, and a wiping roller 433. The cleaning brush 431 may include a brush handle and a brush head connected to each other. The brush handle is connected to a push plate 42, and the brush head contacts the filter element 30. The rotating shaft 432 is connected to the push plate 42. The wiping roller 433 is rotatably mounted on the rotating shaft 432, and the wiping roller 433 and the cleaning brush 431 are spaced apart in the height direction of the air supply device, and can contact the filter element 30. The dual cleaning section can improve the cleaning effect on the filter element 30. For example, taking the wiping roller 433 as being positioned above the cleaning brush 431, when the airflow pushes the push plate 42 to move the cleaning head 43 upward, the wiping roller 433 will first wipe a certain part of the filter element 30. At this time, under the continuous action of the airflow, the push plate 42 will drive the cleaning head 43 to continue moving upward until the cleaning brush 431 reaches the initial position of the wiping roller 433. Then, under the continuous action of the airflow, it will wipe the position that the wiping roller 433 has already wiped, so that the position can be cleaned a second time to improve the cleaning effect on the filter element 30.

[0044] According to one embodiment of this disclosure, such as Figure 3 and Figure 4 As shown, there can be multiple push plates 42, which can be spaced out in the air inlet box 3. There are multiple cleaning heads 43, which are arranged one-to-one with the push plates 42. The cleaning part 4 also includes multiple second connectors 44, with each end of the second connector 44 connected to two adjacent push plates 42. The number of push plates 42 can be determined according to the size of the filter element 30, and this disclosure does not limit this.

[0045] According to one embodiment of this disclosure, such as Figures 3 to 5 As shown, the air supply device also includes a fixing rod 5 disposed in the air inlet box 3. The fixing rod 5 extends along the height direction of the air supply device, and its two ends are respectively connected to the top wall and the bottom wall of the air inlet box 3. The push plate 42 can be inserted through the fixing rod 5. The fixing rod 5 can control the movement trajectory of the push plate 42. In this way, when the airflow exerts force on the push plate 42 and drives it to move, the push plate 42 can drive the cleaning head 43 to move along the extension direction of the fixing rod 5, so that the cleaning head 43 can always keep in contact with the filter element 30, thereby improving the cleaning effect. Here, there can also be multiple fixing rods 5, which are spaced apart in the air inlet box 3 to make the movement path of the push plate 42 more stable and effectively prevent the push plate 42 from rotating during movement.

[0046] Furthermore, such as Figures 3 to 5As shown, both the first connecting member 41 and the second connecting member 44 can be springs and are both sleeved on the fixed rod 5. When the airflow drives the push plate 42 to move upward, the spring is compressed. When the push plate 42 moves to a certain position, the spring force stored in the spring is greater than the thrust provided by the airflow. At this time, the spring can pop out and push the push plate 42 to slowly return to its original position, driving the cleaning head 43 to move downward to perform a second wiping on the areas wiped by the cleaning head 43 when it moved upward, thereby improving the cleaning ability of the cleaning head 43. Compared with the case without a spring, the thrust when the spring returns to its original position is more stable. Whether the push plate 42 is rising or falling, it can stably drive the cleaning head 43 to move, preventing the cleaning head 43 from not wiping properly when the push plate 42 suddenly rises or falls.

[0047] According to one embodiment of this disclosure, such as Figure 3 As shown, the air inlet box 3 may include an air inlet opening 301, and the filter element 30 includes a first filter screen 31 and a second filter screen 32. The cleaning head 43 can contact the first filter screen 31, and the second filter screen 32 can be spaced apart from the first filter screen 31 and located on the side of the first filter screen 31 away from the air inlet opening 301. The air inlet opening 301 is connected to the blower body 2 via the first filter screen 31 and the second filter screen 32 in sequence. The mesh count of the second filter screen 32 is greater than that of the first filter screen 31. That is, the mesh size of the first filter screen 31 is larger than that of the second filter screen 32. The first filter screen 31 is a coarse filter, and the second filter screen 32 is a fine filter. Since the coarse filter is more prone to dust accumulation than the fine filter, and has a greater impact on air delivery efficiency, the cleaning part 4 only needs to be located on the side of the first filter screen 31 near the air inlet opening 301. Of course, to improve cleaning efficiency, the cleaning part 4 can also be located on the side of the second filter screen 32 near the air inlet opening 301; this disclosure does not limit this.

[0048] Furthermore, such as Figure 3 As shown, the top wall of the air inlet box 3 has two spaced-apart mounting openings, each detachably connected to a cover plate 33, with each cover plate 33 corresponding to a mounting opening. The bottom wall of the air inlet box 3 has two spaced-apart mounting slots, also corresponding to mounting openings. The top of the first filter 31 is connected to one cover plate 33, and the bottom of the first filter 31 is embedded in one mounting slot. The top of the second filter 32 is connected to the other cover plate 33, and the bottom of the second filter 32 is embedded in the other mounting slot. Thus, when the first filter 31 or the second filter 32 needs to be replaced, simply open the corresponding cover plate 33, remove the filter 31 or the second filter 32 to be replaced, insert the new filter into the mounting opening until it is inserted into the corresponding mounting slot at the bottom, and then close the cover plate 33.

[0049] According to one embodiment of this disclosure, such as Figure 1 and Figure 2 As shown, the blower body 2 may include an outlet pipe 21 and an inlet pipe 22. The outlet pipe 21 can connect the outlet end of the blower body 2 and the inlet end of the boiler burner. The inlet pipe 22 can connect the outlet end of the inlet box 3 and the inlet end of the blower body 2. A fixing seat 11 may also be provided on the base 1, and the blower body 2 can also be connected to the fixing seat 11. This not only enhances the installation stability of the blower body 2, but also allows adjustment of the installation height of the blower body 2. This disclosure does not limit the scope of the invention.

[0050] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An air supply device for a boiler burner, characterized in that, include: Base; The blower body is mounted on the base, and the air outlet of the blower body is used to connect to the boiler burner. An air inlet box is mounted on the base. One end of the air inlet box is connected to the air inlet end of the blower body, and the other end is used to communicate with the outside. The interior of the air inlet box is hollow and equipped with a filter element for filtering the gas entering the air inlet box; and A cleaning section is disposed in the air inlet box and located on the side of the filter element away from the blower body. The cleaning section includes a first connector, a push plate, and a cleaning head. One end of the first connector is connected to the top wall of the air inlet box, and the other end is connected to the push plate. The end of the push plate away from the first connector is connected to the cleaning head, and the cleaning head can contact the filter element. The extension direction of the push plate is at least partially at an angle to the airflow direction in the air inlet box, so as to drive the push plate to move the cleaning head when the air supply device intakes air.

2. The air supply device for a boiler burner according to claim 1, characterized in that, The push plate includes: The connecting segment is connected to the first connecting member; A driving section is formed at the end of the connecting section away from the blower body, and the angle between the driving section and the connecting section is obtuse; and A fixed section is connected to the end of the connecting section away from the pushing section, and the fixed section is connected to the cleaning head. A first groove is formed on the side of the fixed section near the filter element, which is recessed in a direction away from the filter element, and the cleaning head is disposed in the first groove.

3. The air supply device for a boiler burner according to claim 2, characterized in that, The side of the push section away from the first connector has multiple second grooves spaced apart.

4. The air supply device for a boiler burner according to claim 1, characterized in that, The cleaning head includes: A cleaning brush includes a handle and a brush head connected to each other, the handle being connected to the push plate, and the brush head contacting the filter element; A rotating shaft, the rotating shaft being connected to the push plate; and A wiping roller is rotatably mounted on the rotating shaft, and the wiping roller and the cleaning brush are spaced apart in the height direction of the air supply device and are able to contact the filter element.

5. The air supply device for a boiler burner according to claim 1, characterized in that, The number of push plates is multiple and they are spaced apart in the air inlet box. The number of cleaning heads is multiple and they are arranged in a one-to-one correspondence with the push plates. The cleaning part also includes multiple second connectors, and the two ends of the second connectors are respectively connected to two adjacent push plates.

6. The air supply device for a boiler burner according to claim 5, characterized in that, The air supply device also includes a fixing rod disposed in the air inlet box. The fixing rod extends along the height direction of the air supply device, and the two ends of the fixing rod are respectively connected to the top wall of the air inlet box and the bottom wall of the air inlet box. The push plate passes through the fixing rod.

7. The air supply device for a boiler burner according to claim 6, characterized in that, Both the first connecting member and the second connecting member are springs and are both sleeved on the fixed rod.

8. The air supply device for a boiler burner according to claim 6, characterized in that, The number of fixing rods is multiple, and they are spaced apart in the air inlet box.

9. The air supply device for a boiler burner according to claim 1, characterized in that, The air inlet box includes an air inlet opening, and the filter element includes: A first filter screen, the cleaning head being in contact with the first filter screen; and The second filter screen is spaced apart from the first filter screen and located on the side of the first filter screen away from the air inlet opening. The air inlet opening is connected to the blower body through the first filter screen and the second filter screen in sequence. The mesh count of the second filter screen is greater than that of the first filter screen.

10. The air supply device for a boiler burner according to claim 9, characterized in that, The top wall of the air inlet box has two mounting openings spaced apart, and each of the two mounting openings is detachably connected to a cover plate. The bottom wall of the air inlet box has two mounting grooves spaced apart. The top of the first filter screen is connected to one of the cover plates, and the bottom of the first filter screen is embedded in one of the mounting grooves. The top of the second filter screen is connected to the other cover plate, and the bottom of the second filter screen is embedded in the other mounting groove.

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