Industrial low-nitrogen fuel oil burner

Abstract

The utility model discloses an industrial low-nitrogen type fuel oil burner, which relates to the technical field of fuel oil burners, and comprises a burner main body, an oil inlet of the burner main body is connected with a confluence pipe, two sides of the outer surface of the confluence pipe are connected with three-way pipes through first valves, one side of each three-way pipe is connected with an oil drain valve, and the other side of each three-way pipe is connected with a second valve. The tops of the two three-way pipes are connected with shells, and the outer surfaces of the two shells are connected with oil inlet pipes through second valves. Through the arrangement of the confluence pipe, the first valve, the three-way pipe, the oil drain valve, the second valve and the oil inlet pipe, the number of the filtering structures is two, but the two filtering structures are communicated through the oil inlet pipe and the confluence pipe, when the filtering holes and the fuel oil filter element of one cylinder body are blocked, entering can be stopped by closing the corresponding first valve and second valve; and the other first valve and the other second valve are opened, so that the fuel oil can enter the other set of filtering structure, online work is ensured, and therefore, offline is not needed, and the influence on equipment work is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel burner technology, specifically an industrial low-NOx fuel burner. Background Technology

[0002] A burner is a general term for a device that mixes and burns fuel and air in a certain way. Lighters, gas stoves and other combustion equipment can all be called burners. However, in the industrial field, burners usually refer to heating equipment used in furnaces such as boilers and kilns. The exhaust gas emissions of burners are crucial. Low-NOx burners are a type of burner with a lower content of nitrogen oxides in the exhaust gas after combustion, making them more environmentally friendly than ordinary burners.

[0003] Existing industrial low-NOx fuel oil burners may contain impurities in the fuel after prolonged use due to factors such as pipe aging and contact with impurities during fuel production and transportation. To prevent these impurities from affecting combustion, fuel filters are usually installed. These filters need to be replaced after a period of use to prevent clogging and disruption of fuel flow. However, when the filter is clogged, the pipeline needs to be shut off to prevent fuel from leaking out from the filter removal point. This inevitably affects the burner's operation, such as extending the time before startup or causing the burner to shut down when boilers, kilns, or other equipment are in operation, thus affecting the uniformity of heating. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an industrial low-NOx fuel burner to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an industrial low-NOx fuel burner, comprising a burner body, wherein the oil inlet of the burner body is connected to a confluence pipe, and both sides of the outer surface of the confluence pipe are connected to tee pipes via first valves; one side of each of the two tee pipes is connected to a drain valve; the top of each of the two tee pipes is connected to a housing, and the outer surface of each of the two housings is connected to an oil inlet pipe via a second valve; a cover plate is connected to the top of the housing, and a cylinder is connected to the bottom of the cover plate; a fuel filter element is connected inside the cylinder, and filter holes, a collection hopper, and reinforcing ribs are provided on both sides of the cylinder; a sealing gasket is connected between the housing and the cover plate; a limiting plate penetrates through the lower part of the housing, and a frame is fixed to the top of the limiting plate; a sealing ring is sleeved on the outside of the frame.

[0006] By adopting the above technical solution, the filter element is wrapped in a cylindrical body with filter holes, achieving a coarse filtration effect to remove large impurities such as mud and debris from the fuel. Reinforcing ribs increase the strength of the cylindrical body to prevent deformation. Impurities intercepted by the filter holes settle into the collection hopper, where they are then filtered by the fuel filter element to remove finer impurities. This staged filtration slows down fuel filter element clogging. Simultaneously, sealing gaskets prevent fuel leakage from the gap between the housing and the cover plate, while sealing rings prevent fuel from directly flowing into the burner body through the gap between the housing and the collection hopper, increasing sealing and preventing fuel escape, waste, and damage to the burner body. Furthermore, a frame combined with a limiting plate embedded in the housing prevents the sealing ring from rotating and wearing down, while the sealing gasket is limited by the penetration of the first bolt. When the fuel filter element and filter holes in a set of fuel filtration mechanisms are severely clogged, the operator can flush that set of fuel filters... The first and second valves of the filter mechanism are closed, cutting off the fuel inlet and outlet. Meanwhile, the first and second valves of another set of fuel filter mechanisms are closed, allowing the fuel filter element and filter holes in that other set to perform the filtration. Before disassembling the severely clogged fuel filter element and filter holes, the worker opens the drain valve in this set of fuel filter mechanisms to drain the residual fuel from the housing. A container is placed below the drain valve to collect the drained fuel, reducing waste. Afterwards, the worker removes the first bolt to remove the cover plate. The cover plate, along with the cylinder, fuel filter element, collection hopper, and reinforcing ribs, are pulled out together. During cylinder disassembly, the collection hopper separates directly from the sealing ring, and the cover plate separates directly from the sealing gasket, reducing wear on the sealing structure and extending its service life. Furthermore, the collection hopper removes sediment during cylinder disassembly, reducing the likelihood of sediment entering the burner body after the cylinder is removed.

[0007] Furthermore, a first bolt connects the cover plate to the housing, and the cover plate is detachably connected to the housing via the first bolt.

[0008] By adopting the above technical solution, the cover plate can be removed by removing the first bolt. When the cover plate is removed, the cylinder, fuel filter, collection hopper and reinforcing ribs are also pulled out together.

[0009] Furthermore, both the sealing gasket and the sealing ring are made of fluororubber.

[0010] By adopting the above technical solution, the sealing gasket can prevent fuel from leaking from the gap between the shell and the cover plate, while the sealing ring prevents fuel from flowing directly into the burner body through the gap between the shell and the collection hopper, thereby increasing the sealing performance and preventing fuel escape from causing waste and affecting the burner body.

[0011] Furthermore, multiple limiting plates are provided, and the multiple limiting plates are distributed in a ring array.

[0012] By adopting the above technical solution, the frame, in conjunction with the limiting plate embedded in the housing, prevents the sealing ring from rotating and causing wear, while the sealing gasket is limited and prevented from rotating due to the penetration of the first bolt.

[0013] Furthermore, the longitudinal section of the collection hopper is inverted "V" shape, and the cross-section of the collection hopper is annular.

[0014] By adopting the above technical solution, the impurities that are intercepted by the filter holes and precipitated will fall into the collection hopper. When the cylinder is disassembled, the collection hopper will scoop out the precipitated impurities together, reducing the occurrence of precipitated impurities entering the burner body after the cylinder is removed.

[0015] Furthermore, the bottom of the collection hopper abuts against the top of the sealing ring.

[0016] By adopting the above technical solutions, the collection hopper will be directly separated from the sealing ring when the cylinder is disassembled, and the cover plate will be directly separated from the sealing gasket when disassembled, reducing wear on the sealing structure and extending its service life.

[0017] Furthermore, the pore size of the filter is between 200 μm and 500 μm.

[0018] By adopting the above technical solution, filter holes are opened on the cylinder, which can achieve the effect of coarse filtration, thereby filtering out large-sized impurities such as mud and debris in the fuel.

[0019] Furthermore, the reinforcing ribs are provided in multiple forms, and the multiple reinforcing ribs are distributed in a ring array.

[0020] By adopting the above technical solution, the strength of the cylinder is increased by reinforcing ribs to prevent cylinder deformation, and more reinforcing ribs can increase the support area, further improving the structural strength of the cylinder.

[0021] Furthermore, a second bolt connects the cylinder body and the cover plate, and the cylinder body is detachably connected to the cover plate via the second bolt, while the fuel filter element is detachably connected to the cylinder body.

[0022] By adopting the above technical solution, after removing the cylinder, the staff can remove the second bolt and separate the cylinder from the cover plate. Then the staff can remove the fuel filter element from the cylinder separately. If the cylinder is not damaged, it can be cleaned and a new fuel filter element can be installed for reuse, thereby reducing costs.

[0023] Furthermore, the filter holes are provided in multiple ways, and the multiple filter holes are distributed in a ring array.

[0024] By adopting the above technical solution, the number of filter holes is increased, thereby increasing the fuel flow area and reducing the impact of filter hole settings on fuel flow.

[0025] In summary, the present invention has the following main advantages:

[0026] 1. This utility model features a merging pipe, a first valve, a three-way pipe, a drain valve, a second valve, and an inlet pipe. The filtration structure consists of two sets, connected by the inlet pipe and the merging pipe. When the filter holes and fuel filter element in one cylinder become clogged, the corresponding first and second valves can be closed to cut off the flow, while the other first and second valves can be opened to allow fuel to enter the other filtration structure, ensuring online operation. Therefore, offline operation is unnecessary and avoids impacting equipment operation. Furthermore, before replacing the cylinder and fuel filter element, the corresponding drain valve can be opened to discharge residual fuel into a container for collection, preventing waste.

[0027] 2. This utility model, through the arrangement of a cylinder, fuel filter element, filter holes, collection hopper, and reinforcing ribs, uses a cylinder to enclose the filter element. The filter holes on the cylinder provide a coarse filtration effect, filtering out large impurities such as mud and debris from the fuel. The reinforcing ribs increase the strength of the cylinder to prevent deformation. Then, the fuel filter element filters out fine impurities from the fuel. This staged filtration delays the clogging of the fuel filter element. At the same time, the precipitated impurities fall into the collection hopper, and when the cylinder is disassembled, these impurities are retrieved together, reducing the occurrence of precipitated impurities entering the burner body after the cylinder is removed.

[0028] 3. This utility model, through the setting of sealing gaskets, skeleton, limiting plate and sealing ring, can prevent fuel from leaking from the gap between the shell and the cover plate, while the sealing ring prevents fuel from flowing directly into the burner body through the gap between the shell and the collection hopper, thus increasing the sealing performance and preventing fuel escape, waste and impact on the burner body. At the same time, the skeleton and the limiting plate embedded in the shell prevent the sealing ring from rotating and wearing. When the cylinder is disassembled, the collection hopper and the sealing ring will be directly separated, and the cover plate will be directly separated from the sealing gasket, reducing the wear of the sealing structure and extending its service life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the back structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the side structure of the shell of this utility model;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0032] Figure 4 This is a top view of the cylindrical structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the exploded skeleton structure of this utility model.

[0034] In the diagram: 1. Burner body; 2. Combination pipe; 3. First valve; 4. T-pipe; 5. Oil drain valve; 6. Shell; 7. Second valve; 8. Oil inlet pipe; 9. Cover plate; 10. First bolt; 11. Sealing gasket; 12. Frame; 13. Limiting plate; 14. Sealing ring; 15. Cylinder; 16. Fuel filter element; 17. Filter holes; 18. Second bolt; 19. Collection hopper; 20. Reinforcing rib. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Example 1:

[0038] An industrial low-NOx fuel burner, such as Figure 1 and Figure 2 As shown, the oil inlet of the burner body 1 is connected to a manifold 2. Both sides of the outer surface of the manifold 2 are connected to a three-way pipe 4 via a first valve 3. One side of each of the two three-way pipes 4 is connected to a drain valve 5. The top of each of the two three-way pipes 4 is connected to a housing 6. The outer surface of each of the two housings 6 is connected to an oil inlet pipe 8 via a second valve 7. When the fuel filter element 16 and filter holes 17 in one set of fuel filtration mechanisms are severely clogged, the operator closes the first valve 3 and the second valve 7 of this set of fuel filtration mechanisms to cut off the fuel flow. The operator also closes the first valve 3 and the second valve 7 of another set of fuel filtration mechanisms. At this time, the fuel filter element 16 and filter holes 17 in the other set of fuel filtration mechanisms perform the filtration work. Before disassembling the severely clogged fuel filter element 16 and filter holes 17, the operator opens the drain valve 5 in this set of fuel filtration mechanisms to drain the residual fuel in the housing 6. A container is placed below the drain valve 5 to collect the drained fuel and reduce waste.

[0039] See Figures 1-4In the above embodiment, a cover plate 9 is connected to the top of the housing 6, and a first bolt 10 is connected between the cover plate 9 and the housing 6. The cover plate 9 is detachably connected to the housing 6 via the first bolt 10. A cylinder 15 is connected to the bottom of the cover plate 9, and a fuel filter element 16 is connected inside the cylinder 15. Filter holes 17, a collection hopper 19, and reinforcing ribs 20 are provided on both sides of the cylinder 15. The pore diameter of the filter holes 17 is 200μm to 500μm, and multiple filter holes 17 are provided. The multiple filter holes 17 are distributed in a ring array. The collection hopper 19... The longitudinal section is shaped like an inverted "V". The cross-section of the collection hopper 19 is circular. The filter element is wrapped by the cylinder 15. The cylinder 15 has filter holes 17, which can achieve a coarse filtration effect, thereby filtering out large impurities such as mud and debris in the fuel. The cylinder 15 is strengthened by the reinforcing ribs 20 to prevent deformation. The impurities that are intercepted by the filter holes 17 will fall into the collection hopper 19. Then, the fuel filter element 16 will filter out the fine impurities in the fuel. The staged filtration delays the clogging of the fuel filter element 16.

[0040] See Figure 2 and Figure 5 In the above embodiment, a sealing gasket 11 is connected between the housing 6 and the cover plate 9. A limiting plate 13 penetrates through the lower part of the housing 6. Multiple limiting plates 13 are provided and are arranged in a ring array. A frame 12 is fixed to the top of the limiting plate 13. A sealing ring 14 is sleeved on the outside of the frame 12. The bottom of the collection hopper 19 abuts against the top of the sealing ring 14. Both the sealing gasket 11 and the sealing ring 14 are made of fluororubber material. The sealing gasket 11 can prevent fuel from leaking from the gap between the housing 6 and the cover plate 9, while the sealing ring 14 prevents fuel from flowing directly into the burner body 1 through the gap between the housing 6 and the collection hopper 19, thereby increasing the sealing performance and preventing fuel escape, waste, and impact on the burner body 1. At the same time, the frame 12, in conjunction with the limiting plate 13 embedded in the housing 6, prevents the sealing ring 14 from rotating and wearing, while the sealing gasket 11 is limited by the penetration of the first bolt 10 to prevent rotation.

[0041] Example 2:

[0042] Based on the above embodiment 1, in order to facilitate the recycling of the cylinder 15 and reduce waste, the following settings are now implemented.

[0043] See Figure 3 and Figure 4 In the above embodiment, a second bolt 18 connects the cylinder 15 and the cover plate 9. The cylinder 15 is detached from the cover plate 9 by the second bolt 18. The fuel filter element 16 is detached from the cylinder 15. After removing the cylinder 15, the operator can remove the second bolt 18 and separate the cylinder 15 from the cover plate 9. Then the operator can remove the fuel filter element 16 from the cylinder 15 separately. If the cylinder 15 is not damaged, it can be cleaned and a new fuel filter element can be installed for reuse, thereby reducing costs.

[0044] Example 3:

[0045] Based on the above embodiment 1, in order to further increase the structural strength of the cylinder 15, the following settings are now adopted.

[0046] See Figure 3 and Figure 4 In the above embodiment, multiple reinforcing ribs 20 are provided, and the multiple reinforcing ribs 20 are distributed in a ring array. The reinforcing ribs 20 increase the strength of the cylinder 15 and prevent the cylinder 15 from deforming. Moreover, more reinforcing ribs 20 can increase the support area and further improve the structural strength of the cylinder 15.

[0047] The implementation principle of this utility model is as follows: First, fuel is supplied by an external fuel system. Fuel enters from the inlet pipe 8, passes sequentially through the second valve 7, housing 6, filter hole 17, fuel filter element 16, three-way pipe 4, first valve 3, and confluence pipe 2 before entering the burner body 1. The fuel filtration mechanism, composed of the first valve 3, three-way pipe 4, drain valve 5, housing 6, second valve 7, cover plate 9, first bolt 10, sealing gasket, frame 12, limiting plate 13, sealing ring 14, cylinder 15, fuel filter element 16, filter hole 17, second bolt 18, collection hopper 19, and reinforcing rib 20, is provided in two sets. Both sets of fuel filtration mechanisms are connected to the confluence pipe 2 and the inlet pipe 8, but only one set of fuel filtration mechanisms is in working condition each time, while the other set is in standby condition. The opening and closing of the two sets of fuel filtration mechanisms are controlled by the first valve 3 and the second valve 7. The first valve 3 controls the connection between the fuel filtration mechanism and the burner body 1, and the second valve 7 controls the connection between the fuel filtration mechanism and the external fuel system.

[0048] The filter element is enclosed by a cylinder 15, which has filter holes 17 for coarse filtration, thus filtering out large impurities such as mud and debris in the fuel. The cylinder 15 is reinforced by reinforcing ribs 20 to prevent deformation. Impurities that are intercepted by the filter holes 17 fall into the collection hopper 19 and then pass through the fuel filter element 16 to filter out fine impurities. This staged filtration delays the clogging of the fuel filter element 16. At the same time, the sealing gasket 11 prevents fuel from leaking from the gap between the housing 6 and the cover plate 9, while the sealing ring 14 prevents fuel from flowing directly into the burner body 1 through the gap between the housing 6 and the collection hopper 19, increasing the sealing performance and preventing fuel escape, waste, and damage to the burner body 1. The frame 12, together with the limiting plate 13 embedded in the housing 6, prevents the sealing ring 14 from rotating and wearing, while the sealing gasket 11 is limited by the penetration of the first bolt 10 to prevent rotation.

[0049] When the fuel filter element 16 and filter hole 17 in one set of fuel filter mechanisms are severely clogged, the operator closes the first valve 3 and the second valve 7 of this set of fuel filter mechanisms to cut off the fuel flow. At the same time, the operator closes the first valve 3 and the second valve 7 of another set of fuel filter mechanisms, and the fuel filter element 16 and filter hole 17 in the other set of fuel filter mechanisms will then perform the filtration work.

[0050] Before disassembling the severely clogged fuel filter element 16 and filter holes 17, the operator opens the drain valve 5 in this fuel filter mechanism to drain the residual fuel in the housing 6. A container is placed below the drain valve 5 to collect the drained fuel and reduce waste. Then, the operator removes the first bolt 10 to remove the cover plate 9. When the cover plate 9 is removed, the cylinder 15, fuel filter element 16, collection hopper 19, and reinforcing rib 20 are also pulled out. During the disassembly of the cylinder 15, the collection hopper 19 and the cover plate will separate directly from the sealing ring 14. 9 will be directly separated from the sealing gasket 11 during disassembly, reducing wear on the sealing structure and extending service life; and the collection hopper 19 will scoop out the sediment along with the cylinder body 15 during disassembly, reducing the occurrence of sediment entering the burner body 1 after the cylinder body 15 is removed; after removing the cylinder body 15, the operator can remove the second bolt 18 and then separate the cylinder body 15 from the cover plate 9. After that, the operator can remove the fuel filter element 16 from the cylinder body 15 separately. If the cylinder body 15 is not damaged, it can be cleaned and a new fuel filter element can be installed for reuse, thereby reducing costs.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An industrial low-NOx fuel oil burner, comprising a burner body, characterized in that: The burner body has an oil inlet connected to a manifold, and both sides of the manifold's outer surface are connected to tee pipes via first valves. One side of each of the two tee pipes is connected to a drain valve, and the top of each of the two tee pipes is connected to a housing. The outer surfaces of each housing are connected to an oil inlet pipe via second valves. A cover plate is connected to the top of the housing, and a cylinder is connected to the bottom of the cover plate. A fuel filter element is connected inside the cylinder, and filter holes, a collection hopper, and reinforcing ribs are provided on both sides of the cylinder. A sealing gasket is connected between the housing and the cover plate. A limiting plate passes through the lower part of the housing, and a frame is fixed to the top of the limiting plate. A sealing ring is fitted around the outside of the frame.

2. The industrial low-NOx fuel burner according to claim 1, characterized in that: The cover plate is connected to the housing by a first bolt, and the cover plate is detachably connected to the housing by the first bolt.

3. The industrial low-NOx fuel burner according to claim 1, characterized in that: Both the sealing gasket and the sealing ring are made of fluororubber.

4. The industrial low-NOx fuel burner according to claim 1, characterized in that: The limiting plates are provided in multiple ways, and the multiple limiting plates are distributed in a ring array.

5. The industrial low-NOx fuel burner according to claim 1, characterized in that: The longitudinal section of the collection hopper is inverted "V" shape, and the cross-section of the collection hopper is circular.

6. The industrial low-NOx fuel burner according to claim 5, characterized in that: The bottom of the collection hopper abuts against the top of the sealing ring.

7. The industrial low-NOx fuel burner according to claim 1, characterized in that: The pore size of the filter is 200μm to 500μm.

8. The industrial low-NOx fuel burner according to claim 1, characterized in that: The reinforcing ribs are provided in multiple ways, and the multiple reinforcing ribs are distributed in a ring array.

9. The industrial low-NOx fuel burner according to claim 1, characterized in that: A second bolt connects the cylinder body and the cover plate, and the cylinder body is detachably connected to the cover plate via the second bolt. The fuel filter element is detachably connected to the cylinder body.

10. The industrial low-NOx fuel burner according to claim 1, characterized in that: The filter holes are provided in multiple ways, and the multiple filter holes are distributed in a ring array.

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