A hot air isolation door of a coal mill capable of preventing jamming and air leakage

Abstract

The utility model discloses a kind of coal mill hot air isolation doors that can prevent jam and air leakage, including door frame, door frame inside is provided with sliding slot, sliding slot inside is slidably connected with door panel, the inner wall on the rear side of sliding slot is equipped with the sealing air bag of annular structure, the side of sealing air bag top is equipped with the first air inlet pipe and air outlet pipe of adjacent arrangement, first air inlet pipe and air outlet pipe all extend to door frame top, valve is installed on the outside of air outlet pipe, the inside of the front side of sliding slot is embedded with the gas delivery pipe of U shape structure, gas delivery pipe is close to the side of sliding slot and uniformly equipped with multiple air outlets, and air outlet all is inclined to the inner wall of sliding slot Setting, the side of gas delivery pipe top is equipped with the second air inlet pipe extending to door frame top. By the above structure, the efficient sealing between door panel and door frame is realized, effectively isolates hot air leakage, and can effectively remove dust and impurities, avoids the problem of door panel jam caused by dust, is beneficial to improve the opening and closing smoothness of door panel, and use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of coal mill technology, and in particular to a hot air isolation door for coal mills that can prevent jamming and air leakage. Background Technology

[0002] In industrial sectors such as thermal power generation, coal mills are one of the key pieces of equipment for pulverized coal preparation. As an important component of the coal mill, the hot air isolation door's sealing performance and operational smoothness directly affect the mill's operating efficiency and safety.

[0003] Currently, during the operation of the hot air isolation door in a coal mill, coal dust particles generated during mill operation easily adhere to the door's path. These tiny but persistent particles hinder the door's tight closure, causing hot air leakage and affecting the system's sealing and efficiency. Therefore, those skilled in the art provide a coal mill hot air isolation door that prevents jamming and air leakage to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a coal mill hot air isolation door that prevents jamming and air leakage, achieving a highly efficient seal between the door panel and the door frame, effectively isolating hot air leakage, and ensuring the stability and thermal efficiency of the internal environment of the coal mill. At the same time, it can effectively remove accumulated ash and impurities, avoiding door panel jamming caused by ash accumulation, thus improving the smoothness of door opening and closing and providing good performance.

[0005] To achieve the above objectives, a coal mill hot air isolation door that prevents jamming and air leakage is provided, comprising a door frame, an inner groove inside the door frame, a door panel slidably connected inside the groove, a ring-shaped sealing airbag installed on the inner wall of the rear side of the groove, a first air inlet pipe and an air outlet pipe arranged adjacent to each other on one side of the top of the sealing airbag, both the first air inlet pipe and the air outlet pipe extending to the top of the door frame, a valve installed on the outer side of the air outlet pipe, a U-shaped air supply pipe embedded inside the front side of the groove, a plurality of air outlets evenly provided on the side of the air supply pipe near the groove, and the air outlets are all inclined toward the inner wall of the groove, and a second air inlet pipe extending to the top of the door frame is installed on one side of the top of the air supply pipe.

[0006] The hot air isolation door for a coal mill that can prevent jamming and air leakage also includes an air pump. The top ends of the first air inlet pipe and the second air inlet pipe are both connected to the outlet of the air pump, and valves are also installed on the outside of the first air inlet pipe and the second air inlet pipe.

[0007] According to the aforementioned coal mill hot air isolation door that can prevent jamming and air leakage, a cylinder is installed on the outer side of the door frame and away from the sealing airbag, and the piston rod of the cylinder is connected to the side of the door panel near the air supply pipe.

[0008] According to the aforementioned coal mill hot air isolation door that can prevent jamming and air leakage, the side of the air outlet opposite to the air delivery pipe is provided with a gap from the chute.

[0009] According to the aforementioned coal mill hot air isolation door that can prevent jamming and air leakage, the door frame is provided with an insulation layer inside.

[0010] According to the aforementioned coal mill hot air isolation door that can prevent jamming and air leakage, the valve is a solenoid valve, and a one-way valve is installed inside each of the air outlets.

[0011] This utility model has the following beneficial effects:

[0012] Compared with existing technologies, this coal mill hot air isolation door, which prevents jamming and air leakage, achieves a highly efficient seal between the door panel and the frame, effectively preventing hot air leakage and ensuring the stability and thermal efficiency of the internal environment of the coal mill. Simultaneously, it effectively removes accumulated ash and impurities, avoiding door panel jamming caused by ash buildup, thus improving the smoothness of door opening and closing and resulting in superior performance.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a front sectional view of the structure of a coal mill hot air isolation door that can prevent jamming and air leakage according to the present invention.

[0016] Figure 2 This is a rear cross-sectional view of the hot air isolation door for a coal mill that can prevent jamming and air leakage according to the present invention.

[0017] Figure 3 This is a side sectional view of the hot air isolation door for a coal mill that can prevent jamming and air leakage according to the present invention.

[0018] Figure 4 This utility model relates to a hot air isolation door for coal mills that can prevent jamming and air leakage. Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This utility model relates to a hot air isolation door for coal mills that can prevent jamming and air leakage. Figure 2 Enlarged structural diagram at point B;

[0020] Figure 6This utility model relates to a hot air isolation door for coal mills that can prevent jamming and air leakage. Figure 3 Enlarged structural diagram at point C.

[0021] Legend:

[0022] 1. Door frame; 2. Door panel; 3. Cylinder; 4. Slide groove; 5. Sealing airbag; 6. First air inlet pipe; 7. Air pump; 8. Air outlet pipe; 9. Valve; 10. Air supply pipe; 11. Air outlet; 12. Second air inlet pipe; 13. Insulation layer. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1 - Figure 6 This utility model discloses a coal mill hot air isolation door that prevents jamming and air leakage. It includes a door frame 1 and an air pump 7. The door frame 1 has an internal insulation layer 13 to effectively isolate the internal working environment from external temperatures. A sliding groove 4 is provided inside the door frame 1, and a door panel 2 is slidably connected inside the groove 4. A ring-shaped sealing airbag 5 is installed on the inner wall of the rear side of the groove 4. A first air inlet pipe 6 and an air outlet pipe 8 are arranged adjacent to each other on one side of the top of the sealing airbag 5. Both the first air inlet pipe 6 and the air outlet pipe 8 extend to the top of the door frame 1. A valve 9 is installed on the outer side of the air outlet pipe 8. A U-shaped air supply pipe 10 is embedded inside the front side of the groove 4. Multiple air outlets 11 are evenly distributed on the side of the air supply pipe 10 near the groove 4. The side of the air outlet 11 opposite to the air supply pipe 10 is spaced apart from the groove 4, and the air outlets 11 are all inclined towards the inner wall of the groove 4, so that the ejected gas can cover the contact surface between the door panel 2 and the groove 4. A second air inlet pipe 12 extending to the top of the door frame 1 is installed on one side of the top of the air supply pipe 10.

[0025] Air is injected into the sealing airbag 5 through the first air inlet pipe 6. As the sealing airbag 5 expands, it fits tightly against the gap between the door panel 2 and the door frame 1, forming a sealing barrier to effectively prevent hot air leakage. When the door panel 2 needs to be opened, the air outlet pipe 8 is used to release the air from the sealing airbag 5, allowing the sealing airbag 5 to separate from the door panel 2 and facilitating the opening of the door panel 2. When dust accumulates inside the slide groove 4, the high-pressure gas in the air supply pipe 10 is evenly sprayed out through multiple air outlets 11. The gas sprayed from the air outlets 11 can remove the dust accumulated inside the slide groove 4, preventing jamming when opening and closing the door panel 2 and ensuring the sealing effect of the door panel 2.

[0026] Reference Figure 4 and Figure 6 The top ends of the first air inlet pipe 6 and the second air inlet pipe 12 are both connected to the outlet of the air pump 7. When the air pump 7 is started, air can be injected into the sealed airbag 5 through the first air inlet pipe 6, and air can be injected into the air delivery pipe 10 through the second air inlet pipe 12. Valves 9 are also installed on the outside of the first air inlet pipe 6 and the second air inlet pipe 12. Valves 9 are used to control the opening and closing of the first air inlet pipe 6, the second air inlet pipe 12 and the air outlet pipe 8.

[0027] Reference Figure 1 and Figure 2 A cylinder 3 is installed on the outer side of the door frame 1 and away from the sealing airbag 5. The piston rod of the cylinder 3 is connected to the side of the door panel 2 near the air supply pipe 10. The door panel 2 can be opened and closed by the cylinder 3 driving the door panel 2 to slide in the slide groove 4.

[0028] To facilitate the control of the opening and closing of the first air inlet pipe 6, the second air inlet pipe 12, and the air outlet pipe 8, valve 9 is a solenoid valve, which is conducive to realizing automated control. One-way valves are installed inside each air outlet 11 to prevent dust from falling into the air outlet 11.

[0029] Working principle: After installing the door frame 1 and air pump 7, the door panel 2 is driven by cylinder 3 to slide within the slide groove 4, thus opening and closing the door panel 2. When the door panel 2 is closed, the air pump 7 is activated, and air is injected into the sealing airbag 5 through the first air inlet pipe 6. As the sealing airbag 5 expands, it tightly fits against the gap between the door panel 2 and the door frame 1, forming a sealing barrier to effectively prevent hot air leakage. When it is necessary to open the door panel 2, the air outlet pipe 8 is used to release the air from the sealing airbag 5, so that the sealing airbag 5 separates from the door panel 2, facilitating the opening operation of the door panel 2.

[0030] When dust accumulates inside the slide groove 4, the air pump 7 can inflate the air supply pipe 10 through the second air inlet pipe 12. The high-pressure gas in the air supply pipe 10 is evenly sprayed out through multiple air outlets 11. The gas sprayed out from the air outlets 11 can remove the dust accumulated inside the slide groove 4, prevent jamming when opening and closing the door panel 2, and ensure the sealing effect of the door panel 2.

[0031] The overall design achieves a highly efficient seal between door panel 2 and door frame 1, effectively preventing hot air leakage and ensuring the stability and thermal efficiency of the internal environment of the coal mill. Simultaneously, it effectively removes accumulated ash and impurities, preventing door panel 2 from jamming due to ash buildup, thus improving the smoothness of door panel 2's opening and closing, resulting in excellent performance.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A hot air isolation door for a coal mill that prevents jamming and air leakage, characterized in that, The system includes a door frame (1), a sliding groove (4) is provided inside the door frame (1), a door panel (2) is slidably connected inside the sliding groove (4), a sealing airbag (5) with an annular structure is installed on the inner wall of the rear side of the sliding groove (4), a first air inlet pipe (6) and an air outlet pipe (8) are provided adjacent to each other on one side of the top of the sealing airbag (5), the first air inlet pipe (6) and the air outlet pipe (8) both extend to the top of the door frame (1), a valve (9) is installed on the outside of the air outlet pipe (8), a U-shaped air supply pipe (10) is embedded in the interior of the front side of the sliding groove (4), a plurality of air outlets (11) are evenly provided on the side of the air supply pipe (10) near the sliding groove (4), and the air outlets (11) are all inclined toward the inner wall of the sliding groove (4), a second air inlet pipe (12) extending to the top of the door frame (1) is installed on one side of the top of the air supply pipe (10).

2. A coal mill hot air isolation door to prevent jamming and air leakage according to claim 1, characterized in that, It also includes an air pump (7), the top ends of the first air inlet pipe (6) and the second air inlet pipe (12) are connected to the outlet of the air pump (7), and valves (9) are also installed on the outside of the first air inlet pipe (6) and the second air inlet pipe (12).

3. A coal mill hot air isolation door to prevent jamming and air leakage according to claim 2, characterized in that, A cylinder (3) is installed on the outer side of the door frame (1) and away from the sealing airbag (5). The piston rod of the cylinder (3) is connected to the side of the door panel (2) near the air supply pipe (10).

4. A coal mill hot air isolation door according to claim 3, characterized in that, The air outlet (11) is positioned with a gap between the side opposite to the air supply pipe (10) and the slide groove (4).

5. A coal mill hot air isolation door according to claim 4, characterized in that, The door frame (1) is provided with an insulation layer (13).

6. A coal mill hot air isolation door according to claim 5, characterized in that, The valve (9) is a solenoid valve, and a one-way valve is installed inside each of the air outlets (11).

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