CN212987266U - Sealing structure of boiler feed opening - Google Patents
Sealing structure of boiler feed opening Download PDFInfo
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- CN212987266U CN212987266U CN202021865938.7U CN202021865938U CN212987266U CN 212987266 U CN212987266 U CN 212987266U CN 202021865938 U CN202021865938 U CN 202021865938U CN 212987266 U CN212987266 U CN 212987266U
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Abstract
The utility model relates to a sealing structure of a feed opening of a boiler, which comprises a boiler body, a feeding device and a sealing device; the sealing device comprises an air supply pipe and a first air supply branch pipe, one section of the first air supply branch pipe is obliquely inserted and connected onto the feeding pipe, the other end of the first air supply branch pipe is connected onto the air supply pipe, and the air supply pipe is connected onto a primary air fan of the boiler body. Draw cold wind to first air supply branch pipe from the primary air blower of boiler body through the blast pipe for first air supply branch pipe will have the cold wind of certain pressure to blow to the boiler feed opening direction to one side, block that the flue gas in the boiler returns from the feed opening and scurries, reduce the normal pressure of feed opening department, promote the material and flow in the pay-off pipe, effectively avoid blockking up, avoid conveyer and conveyer bearing spontaneous combustion and receive the problem of high temperature inefficacy, improve equipment's life and security. Simultaneously, direct follow boiler primary air fan and introduce cold wind, need not to add the fan again, can greatly reduced equipment cost and power consumption, the cold wind of introducing can also carry out cooling to the conveying pipe.
Description
Technical Field
The utility model relates to a boiler equipment field, in particular to boiler feed opening seal structure.
Background
The boiler feed opening is in the middle of the dense-phase region of the hearth, the pressure of hot smoke is large and reaches 3-5KPa, positive-pressure hot smoke at the feed opening can return from the feeding pipe to flee, the conveyor outlet and the feed opening are caused to be influenced by the hot smoke and are high in temperature, spontaneous combustion is easy to catch fire and hot ash appears, serious potential safety hazards exist, the feeding pipe is influenced by the pressure of the hot smoke of the boiler to flee, the falling of materials in the feeding pipe is blocked, blockage is easy to cause, the labor cleaning workload is increased, the failure rate of a bearing of conveyor equipment is increased due to heating, and the safe and stable operation of the boiler is.
SUMMERY OF THE UTILITY MODEL
Therefore, the sealing structure of the boiler feed opening is needed to be provided, and is used for solving the technical problems that the smoke pressure of the boiler feed opening is high, smoke returns to the feeding pipe, the material conveying is difficult, the feeding pipe is blocked, the manual cleaning workload is increased, time and labor are wasted, meanwhile, the conveyor is easy to catch fire, the fault of bearing equipment fails, and the safe and stable operation of the boiler is influenced.
In order to realize the purpose, the inventor provides a boiler feed opening seal structure, its characterized in that: comprises a boiler body, a feeding device and a sealing device;
the boiler body is provided with a feed opening and a primary fan;
the feeding device comprises a feeding pipe and a conveyor, the feeding pipe comprises an inclined section and a straight section, the inclined section is connected to the feed opening, the straight section is connected to the discharge end of the conveyor, and the included angle between the inclined section and the boiler body is larger than that between the straight section and the boiler body;
the sealing device comprises an air supply pipe and a first air supply branch pipe, the first air supply branch pipe is horizontally arranged, one end of the first air supply branch pipe is obliquely inserted and connected to the oblique section of the feeding pipe, the other end of the first air supply branch pipe is connected to the air supply pipe, and the air supply pipe is connected to a primary air fan of the boiler body.
As the utility model discloses a preferred structure, the conveying pipe still includes second air supply branch pipe, the department of buckling of oblique section and straight section on the conveying pipe is connected to second air supply branch pipe one end, and the other end is connected on the conveying pipe, the contained angle of oblique section is greater than the contained angle of oblique section on first air supply branch pipe and the conveying pipe on second air supply branch pipe and the conveying pipe.
As the utility model discloses a preferred structure, the conveying pipe still includes third air supply branch pipe, straight section department on the conveying pipe is connected to third air supply branch pipe one end, and the other end is connected on the conveying pipe, the contained angle of straight section is less than the contained angle of oblique section on first air supply branch pipe and the conveying pipe on third air supply branch pipe and the conveying pipe.
As a preferred structure of the utility model, the conveying pipe still includes fourth air supply branch pipe, straight section department on the conveying pipe is connected to fourth air supply branch pipe one end, and the other end is connected on the conveying pipe, fourth air supply branch pipe is located the top of third air supply branch pipe, the contained angle of straight section is less than the contained angle of oblique section on first air supply branch pipe and the conveying pipe on fourth air supply branch pipe and the conveying pipe.
As the utility model discloses a preferred structure, second air supply branch pipe, third air supply branch pipe, fourth air supply branch pipe are equipped with two respectively, and two second air supply branch pipe symmetric connections are in the conveying pipe bottom, and two third air supply branch pipe symmetric connections are in the conveying pipe bottom, and two fourth air supply branch pipe symmetric connections are in the conveying pipe bottom, first air supply branch union coupling is in conveying pipe bottom central authorities.
As a preferred structure of the utility model, first air supply branch pipe and second air supply branch pipe are the pipe, third air supply branch pipe and fourth air supply branch pipe are square pipes, the cross sectional area of first air supply branch pipe and second air supply branch pipe is less than the cross sectional area of third air supply branch pipe and fourth air supply branch pipe.
As an optimized structure of the utility model, the included angle between the third air supply branch pipe and the straight section of the feeding pipe and the included angle between the fourth air supply branch pipe and the straight section of the feeding pipe are within the range of 30-45 degrees.
As a preferred structure of the utility model, the included angle between the inclined section and the first air supply branch pipe is within the range of 50-70 degrees.
As a preferred structure of the present invention, the conveyor is a chain plate machine.
As the utility model discloses a preferred structure, be equipped with the governing valve on the blast pipe, the governing valve is used for adjusting the amount of wind of blast pipe.
Different from the prior art, the technical scheme provides a sealing structure of a feed opening of a boiler, which comprises a boiler body, a feeding device and a sealing device; the boiler body is provided with a feed opening and a primary fan; the feeding device comprises a feeding pipe and a conveyor, the feeding pipe comprises an inclined section and a straight section, the inclined section is connected to the feed opening, the straight section is connected to the discharge end of the conveyor, and the included angle between the inclined section and the boiler body is larger than that between the straight section and the boiler body; the sealing device comprises an air supply pipe and a first air supply branch pipe, one section of the first air supply branch pipe is obliquely inserted and connected onto the feeding pipe, the other end of the first air supply branch pipe is connected onto the air supply pipe, and the air supply pipe is connected onto a primary air fan of the boiler body.
When in work, the feeder conveys the materials into the feed inlet of the feed pipe, the materials fall down in the feed pipe under the action of weight, meanwhile, cold air is led from a primary air blower of the boiler body to the first air supply branch pipe through the air supply pipe, a certain included angle is formed between the first air supply branch pipe and the inclined pipe, make first air supply branch pipe blow the cold wind that will have certain pressure and blow to boiler feed opening direction to one side, block that the flue gas in the boiler returns from the feed opening and scurries, reduce the normal pressure of feed opening department, promote the material and flow in the pay-off pipe, effectively avoid blockking up, smooth and easy material circulation of pipe chute department also plays a solid particle flow siphon effect, it flows to drive upper portion straight tube partial material, reverse block the flue gas and return scurring from the feed opening, play the one-way sealed confined effect of flue gas in the boiler, avoid conveyer and conveyer bearing spontaneous combustion and receive the problem of high temperature inefficacy, improve equipment's life and security. On the other hand, directly introduce cold wind from boiler primary air fan, need not to add the fan again, can greatly reduced equipment cost and power consumption, the cold wind of introduction can also carry out cooling to the conveying pipe.
Drawings
FIG. 1 is a schematic structural diagram of a boiler feed opening sealing structure according to an embodiment;
fig. 2 is a partial right-view schematic diagram of a feed pipe of the boiler feed opening sealing structure according to the embodiment.
Description of reference numerals:
10. a boiler body;
11. a feeding port;
21. a chain plate machine; 22. a feed pipe; 221. an oblique section; 222. a straight section; 23. a hopper;
31. an air supply pipe; 32. a first air supply branch pipe; 33. a second air supply branch pipe; 34. a third air supply branch pipe; 35. a fourth air supply branch pipe;
40. and (3) feeding.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
Referring to fig. 1 and fig. 2, the present embodiment relates to a sealing structure of a boiler feed opening 11, which is characterized in that: comprises a boiler body 10, a feeding device and a sealing device.
The boiler body 10 is provided with a feed opening 11 and a primary air fan. The primary air fan of the boiler sends air taken from the environment into the air preheater for heating, one part of the heated hot air is sent into the coal mill for drying and conveying pulverized coal, and the primary air fan is a centrifugal air cooler and mainly conveys cold primary air. The feed opening 11 is arranged at the side of the reburning furnace.
As shown in fig. 1, the feeding device comprises a feeding pipe 22 and a conveyor, the conveyor is a chain plate machine 21, a hopper 23 is arranged below the chain plate machine 21, and the feeding pipe 22 is connected to the bottom of the hopper 23 below the discharging end of the chain plate machine 21. The feeding pipe 22 comprises an inclined section 221 and a straight section 222, the inclined section 221 is connected to the feed opening 11, the straight section 222 is connected to the discharge end of the conveyor, and the included angle between the inclined section 221 and the boiler body 10 is larger than the included angle between the straight section 222 and the boiler body 10. Conveying pipe 22 is formed by straight section 222 and oblique section 221 welding, oblique section 221 is connected on boiler feed opening 11, the contained angle of oblique section 221 and boiler lateral wall is 30, ensure that feed opening 11 is by certain inclination, make boiler feed opening 11 can not the overlength, the other end at oblique section 221 is connected to straight section 222, length is longer, the angle of inclination of relative boiler lateral wall is less, conveying pipe 22 passes through oblique section 221 and is connected with straight section 222, can reduce conveying pipe 22's transverse length greatly, increase chain trigger 21 and boiler feed opening 11's difference in height simultaneously, for boring provide sufficient whereabouts potential energy. The feeding pipe 22 is a square pipe formed by a straight section 222, a connecting part of an inclined section 221 and the straight section 222 is the square pipe, a circular pipe is arranged inside a connecting part of the inclined section 221 and the feed opening 11, and the circular pipe is matched with the feed opening 11.
The sealing device comprises an air supply pipe 31 and a first air supply branch pipe 32, the first air supply branch pipe 32 is horizontally arranged, one end of the first air supply branch pipe 32 is obliquely inserted and connected to the oblique section 221 of the feeding pipe 22, the other end of the first air supply branch pipe is connected to the air supply pipe 31, and the air supply pipe 31 is connected to a primary air fan of the boiler body 10. First air supply branch pipe 32 is the pipe, and the pipe diameter is 100mm, and first air supply branch pipe 32 is connected in oblique section 221 bottom center of conveying pipe 22, and first air supply branch pipe 32 is for the ellipse with oblique section 221 bottom connection face, as shown in fig. 2, looks for circularly from the right side, and the air outlet of first air supply branch pipe 32 is near feed opening 11, adopts the less circle interface of diameter to be favorable to improving the export pressure head, promotes the pay-off. First air supply branch pipe 32 level sets up, and the contained angle with the oblique section 221 of conveying pipe 22 is 60, mainly plays to press feed opening 11 and has located the malleation firework, prevents that firework from returning and scurring, reaches mediation material 40, prevents the effect of jam.
When the device works, the chain plate machine 21 conveys materials 40 into a feeding hole of the feeding pipe 22, the materials 40 fall in the feeding pipe 22 under the action of weight, and at the same time, cold air is guided from a primary air blower of the boiler body 10 to the first air supply branch pipe 32 through the air supply pipe 31, a certain included angle exists between the first air supply branch pipe 32 and the inclined pipe, so that the cold air with certain pressure is blown by the first air supply branch pipe 32 to be obliquely blown towards the direction of a boiler feed opening 11, smoke in the boiler is prevented from flowing back from the feed opening 11, the positive pressure at the feed opening 11 is reduced, the materials 40 are pushed to flow in the feeding pipe 22, the blockage is effectively avoided, smooth circulation of the materials 40 at the inclined pipe also plays a role in solid particle flowing, the siphoning of the materials 40 at the upper straight pipe part is driven to flow, the smoke is prevented from flowing back from the feed opening 11 in reverse, the function of sealing and sealing the smoke in a one way, the service life and the safety of the equipment are improved. On the other hand, directly introduce cold wind from boiler primary air fan, need not to add the fan again, but greatly reduced equipment cost and power consumption, the cold wind of introduction can also carry out cooling to conveying pipe 22. In addition, the first air supply branch pipe 32 blows cold air with certain pressure into the boiler obliquely, so that the materials 40 can be prevented from directly scouring the water-cooled wall, the water-cooled wall near the feed opening 11 is prevented from being seriously abraded, and a large amount of oxygen is brought into the boiler to promote combustion.
Further, the feeding pipe 22 further comprises a second air supply branch pipe 33, one end of the second air supply branch pipe 33 is connected to the bent part of the inclined section 221 and the straight section 222 on the feeding pipe 22, the other end of the second air supply branch pipe 33 is connected to the air supply pipe 31, and the included angle between the second air supply branch pipe 33 and the inclined section 221 on the feeding pipe 22 is larger than the included angle between the first air supply branch pipe 32 and the inclined section 221 on the feeding pipe 22. Second air supply branch pipe 33 is connected in the bottom of oblique section 221 on conveying pipe 22 with conveying pipe 22, the contained angle of oblique section 221 on second air supply branch pipe 33 and the conveying pipe 22 is 70, it is great for the contained angle of oblique section 221 on first air supply branch pipe 32 and the conveying pipe 22, mainly play sealing role, form the back scurring of firework that the first air supply branch pipe 32 was missed through second air supply branch pipe 33 promptly, further strengthen the one-way sealed confined effect of flue gas in the boiler, the bending department of oblique section 221 and straight section 222 easily causes material 40 to pile up on conveying pipe 22 simultaneously, through the second air supply branch pipe 33 at the bending department provides pressure wind and dashes and disperse, can effectively avoid the bending department of oblique section 221 and straight section 222 on conveying pipe 22 to take place material 40 and pile up. Furthermore, because the feeding pipe 22 at the bending part of the inclined section 221 and the straight section 222 on the feeding pipe 22 is a rectangular pipe, the bottom is longer, the cross section is larger, two second air supply branch pipes 33 are provided, the two second air supply branch pipes 33 are arranged at the bottom of the feeding pipe 22 in parallel, the two third air supply branch pipes 34 are round pipes, the pipe diameter is 100mm, the connecting surface between the two second air supply branch pipes 33 and the bottom of the inclined section 221 is oval, as shown in fig. 2, the right side of the connecting surface is circular, and the pressure head of the air outlet of the two second air supply branch pipes 33 is higher, so that smoke and fire in the boiler can be effectively prevented from returning and channeling, and a second effective barrier.
Further, the feeding pipe 22 further comprises a third air supply branch pipe 34, one end of the third air supply branch pipe 34 is connected to the straight section 222 of the feeding pipe 22, the other end of the third air supply branch pipe 34 is connected to the air supply pipe 31, and the included angle between the third air supply branch pipe 34 and the straight section 222 of the feeding pipe 22 is smaller than the included angle between the first air supply branch pipe 32 and the inclined section 221 of the feeding pipe 22. The included angle between the third air supply branch pipe 34 and the straight section 222 on the feeding pipe 22 is within the range of 30-45 degrees, in this embodiment, 30 degrees is taken according to the field environment, the third air supply branch pipe 34 is connected to the bottom of the straight section 222 on the feeding pipe 22, the included angle with the straight section 222 on the feeding pipe 22 is smaller, the direction of the air outlet of the third air supply branch pipe 34 is basically consistent with the flow direction of the material 40, the included angle is 30 degrees, the material 40 can be effectively pushed to uniformly flow on the straight section 222 on the feeding pipe 22, under the pushing of the air outlet of the third air supply branch pipe 34, the material 40 below the air outlet of the third air supply branch pipe 34 rapidly flows to form a small negative pressure environment, siphons are formed, the falling of the material 40 above is accelerated, the air flow below the air outlet of the third air supply branch pipe 34 is blocked, a third layer of sealing barrier is, and the returned residual flue gas in the boiler can be sealed, so that the residual flue gas is prevented from rising to the chain trigger 21 and affecting the chain trigger 21 and the bearing thereof. Furthermore, because the feeding pipe 22 at the straight section 222 of the feeding pipe 22 is a rectangular pipe, the bottom is longer and the cross section is larger, two third air supply branch pipes 34 are provided, the two third air supply branch pipes 34 are arranged at the bottom of the feeding pipe 22 in parallel, the two third air supply branch pipes 34 are circular pipes, the connecting part between the two third air supply branch pipes 34 and the bottom of the feeding pipe 22 is excessively a rectangular pipe, as shown in fig. 2, that is, the connecting surface between the two third air supply branch pipes 34 and the bottom of the inclined section 221 is rectangular, the rectangular section is 400mm long and 100mm wide, the air outlet surface area is larger, the pressure head is smaller, the pushing effect is mainly achieved, the smoke is prevented from returning through the flow of the material 40, and a third effective barrier is formed.
Further, the feeding pipe 22 further comprises a fourth air supply branch pipe 35, one end of the fourth air supply branch pipe 35 is connected to the straight section 222 of the feeding pipe 22, the other end of the fourth air supply branch pipe 35 is connected to the air supply pipe 31, the fourth air supply branch pipe 35 is located above the third air supply branch pipe 34, and an included angle between the fourth air supply branch pipe 35 and the straight section 222 of the feeding pipe 22 is smaller than an included angle between the first air supply branch pipe 32 and the inclined section 221 of the feeding pipe 22. The included angle between the fourth air supply branch pipe 35 and the upper straight section 222 of the feeding pipe 22 is within the range of 30-45 degrees, in this embodiment, 45 degrees is taken according to the field environment, the fourth air supply branch pipe 35 is connected to the bottom of the upper straight section 222 of the feeding pipe 22 and is positioned above the third air supply branch pipe 34, the included angle between the fourth air supply branch pipe 35 and the upper straight section 222 of the feeding pipe 22 is smaller, the flow direction of the air outlet of the fourth air supply branch pipe 35 is basically consistent with the flow direction of the material 40, the included angle is 45 degrees, the fourth air supply branch pipe 35 and the third air supply branch pipe 34 cooperate to push the material 40 to uniformly flow on the upper straight section 222 of the feeding pipe 22, under the push of the air outlet of the third air supply branch pipe 34 and the air outlet of the fourth air supply branch pipe 35, the material 40 below the air outlet of the third air supply branch pipe 34 rapidly and uniformly flows to block, a more robust third layer of sealing barrier is formed. Furthermore, because the feeding pipe 22 at the straight section 222 on the feeding pipe 22 is a rectangular pipe, the bottom is longer and the cross section is larger, two fourth air supply branch pipes 35 are arranged at the bottom of the feeding pipe 22 in parallel, the two third air supply branch pipes 34 are circular pipes, and the connecting part between the two third air supply branch pipes 34 and the bottom of the feeding pipe 22 is excessively a rectangular pipe, as shown in fig. 2, that is, the connecting surface between the two third air supply branch pipes 34 and the bottom of the inclined section 221 is rectangular, the rectangular cross section is 400mm long and 100mm wide, the air outlet area is larger, the pressure head is smaller, the pushing effect is mainly achieved, the smoke is prevented from flowing back through the material 40, and the third effective barrier is further stabilized.
Furthermore, the air supply pipe 31 is provided with an adjusting valve for adjusting the air volume of the air supply pipe 31. The regulating valve can adopt a manual butterfly valve to regulate the air quantity and can also adopt an electromagnetic valve for electric control. A flow control valve or a one-way valve can also be arranged on each air supply branch pipe.
In some embodiments, the inclined section 221 of the feeding pipe 22 has a different angle with the boiler body 10 due to different inclination angles of the feed openings 11 of different boilers, and when the first air supply branch pipe 32 is horizontally arranged, the angle between the first air supply branch pipe 32 and the inclined section 221 of the feeding pipe 22 is selected within a range of 50 ° to 70 °. The conveyor can also be a flap conveyor or a belt conveyor or other conveyors.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a boiler feed opening seal structure which characterized in that: comprises a boiler body, a feeding device and a sealing device;
the boiler body is provided with a feed opening and a primary fan;
the feeding device comprises a feeding pipe and a conveyor, the feeding pipe comprises an inclined section and a straight section, the inclined section is connected to the feed opening, the straight section is connected to the discharge end of the conveyor, and the included angle between the inclined section and the boiler body is larger than that between the straight section and the boiler body;
the sealing device comprises an air supply pipe and a first air supply branch pipe, the first air supply branch pipe is horizontally arranged, one end of the first air supply branch pipe is obliquely inserted and connected to the oblique section of the feeding pipe, the other end of the first air supply branch pipe is connected to the air supply pipe, and the air supply pipe is connected to a primary air fan of the boiler body.
2. The boiler feed opening sealing structure according to claim 1, characterized in that: the feeding pipe further comprises a second air supply branch pipe, one end of the second air supply branch pipe is connected to the bending part of the inclined section and the straight section on the feeding pipe, the other end of the second air supply branch pipe is connected to the air supply pipe, and the included angle between the second air supply branch pipe and the inclined section on the feeding pipe is larger than the included angle between the first air supply branch pipe and the inclined section on the feeding pipe.
3. The boiler feed opening sealing structure according to claim 2, characterized in that: the feeding pipe further comprises a third air supply branch pipe, one end of the third air supply branch pipe is connected to the straight section on the feeding pipe, the other end of the third air supply branch pipe is connected to the air supply pipe, and the included angle between the third air supply branch pipe and the straight section on the feeding pipe is smaller than the included angle between the first air supply branch pipe and the inclined section on the feeding pipe.
4. The boiler feed opening sealing structure according to claim 3, characterized in that: the feeding pipe further comprises a fourth air supply branch pipe, one end of the fourth air supply branch pipe is connected to the straight section on the feeding pipe, the other end of the fourth air supply branch pipe is connected to the air supply pipe, the fourth air supply branch pipe is located above the third air supply branch pipe, and the included angle between the fourth air supply branch pipe and the straight section on the feeding pipe is smaller than the included angle between the first air supply branch pipe and the inclined section on the feeding pipe.
5. The boiler feed opening sealing structure according to claim 4, wherein: the second air supply branch pipe, the third air supply branch pipe and the fourth air supply branch pipe are respectively provided with two air supply branch pipes, the two air supply branch pipes are symmetrically connected to the bottom of the feeding pipe, and the first air supply branch pipe is connected to the center of the bottom of the feeding pipe.
6. The boiler feed opening sealing structure according to claim 4, wherein: the air outlets of the first air supply branch pipe and the second air supply branch pipe are circular, the air outlets of the third air supply branch pipe and the fourth air supply branch pipe are square, and the cross-sectional areas of the air outlets of the first air supply branch pipe and the second air supply branch pipe are smaller than the cross-sectional areas of the air outlets of the third air supply branch pipe and the fourth air supply branch pipe.
7. The boiler feed opening sealing structure according to claim 6, wherein: the included angle between the third air supply branch pipe and the straight section of the feeding pipe and the included angle between the fourth air supply branch pipe and the straight section of the feeding pipe are within the range of 30-45 degrees.
8. The boiler feed opening sealing structure according to claim 1, characterized in that: the included angle between the inclined section of the feeding pipe and the first air supply branch pipe is within the range of 50-70 degrees.
9. The boiler feed opening sealing structure according to claim 1, characterized in that: the conveyor is a chain plate machine.
10. The boiler feed opening sealing structure according to claim 1, characterized in that: and the air supply pipe is provided with an adjusting valve, and the adjusting valve is used for adjusting the air quantity of the air supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021865938.7U CN212987266U (en) | 2020-08-31 | 2020-08-31 | Sealing structure of boiler feed opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021865938.7U CN212987266U (en) | 2020-08-31 | 2020-08-31 | Sealing structure of boiler feed opening |
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| Publication Number | Publication Date |
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| CN212987266U true CN212987266U (en) | 2021-04-16 |
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| CN202021865938.7U Active CN212987266U (en) | 2020-08-31 | 2020-08-31 | Sealing structure of boiler feed opening |
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| CN (1) | CN212987266U (en) |
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