Pneumatic flap door sealing device

Abstract

To provide a pneumatic flap door sealing device that prevents deterioration of sealing performance. 【Solution means】The pneumatic flap door sealing device includes a door panel 1 and a door frame 2. The door panel is provided at the upper end of the door frame. A strip-shaped graphite packing 4 is provided at the lower part of the door panel. Circular graphite packings 5 are provided on both sides located at the lower end of the strip-shaped graphite packing at the lower part of the door panel. A protruding seal ring 3 is provided below and located between the two circular graphite packings at the upper end of the door frame. The longitudinal section of the protruding seal ring is triangular. Fixed side plates 6 are provided on both sides located outside the circular graphite packing at the lower part of the door frame. By connecting with the protruding seal ring through the circular graphite packing and connecting the strip-shaped graphite packing and the circular graphite packing, the dust-proof performance and sealing performance between the door panel and the door frame are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing devices, and more specifically to a pneumatic flap door sealing device.

Background Art

[0002] The pneumatic flap door sealing device is a sealing component used for a pneumatic flap door, mainly used to prevent leakage of the medium and maintain the sealing performance of the system. Currently, for the pneumatic flap door sealing device, a 20-mm graphite packing is attached to the door panel, and one flat seal strip is used on the door frame.

[0003] Although the above pneumatic flap door sealing device can initially achieve a sealing effect, when dust accumulates and hardens on the graphite packing, the sealing effect deteriorates. Therefore, a pneumatic flap door sealing device is proposed.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a pneumatic flap door sealing device for solving the problems pointed out in the above background art.

Means for Solving the Problems

[0005] To achieve the above object, the present invention adopts the following technical solutions. A pneumatic flap door sealing device, comprising a door panel and a door frame, wherein the door panel is provided at the upper end of the door frame, a strip-shaped graphite packing is provided at the lower part of the door panel, circular graphite packings are provided on both sides at the lower end of the strip-shaped graphite packing at the lower part of the door panel, a protruding sealing ring is provided below between the two circular graphite packings at the upper end of the door frame, the longitudinal section of the protruding sealing ring is triangular, and fixed side plates are provided on both sides outside the circular graphite packing at the lower part of the door frame.

[0006] Preferably, an outer ring is provided outside the door frame, and the outer ring and the door frame are connected via bolts, and a side shell is provided on the outer side of the outer ring.

[0007] Preferably, annular grooves are provided on both the upper and lower sides outside the outer ring, and the annular grooves are integrally formed with the outer ring, and the annular grooves are used to limit the movement locus of the side shell.

[0008] Preferably, balls are provided on both the upper and lower sides inside the side shell, and the balls are movably connected to the side shell. The balls are fitted into the annular grooves, and the installation of the balls makes the movement of the side shell smoother.

[0009] Preferably, an L-shaped inner frame is provided on the lower end side of the side shell, and a return spring is provided at the lower end of the L-shaped inner frame. The installation of the return spring enables the inner panel to have an automatic return function, thereby helping to push down the inner panel to enhance the cleaning force.

[0010] Preferably, an inner panel is provided at the lower end of the return spring, and a brush is provided on the side approaching the protruding seal ring at the lower end of the inner panel. The brush is used to clean the dust outside the protruding seal ring.

Advantages of the Invention

[0011] Compared with the prior art, the present invention provides a pneumatic flap door sealing device and has the following advantageous effects.

[0012] When the door panel and the door frame are closed, the circular graphite packing is combined with the protruding sealing ring, and the strip-shaped graphite packing is in close contact with the circular graphite packing to achieve a sealing effect. At the same time, dust is blocked through the circular graphite packing to prevent dust from entering the strip-shaped graphite packing and affecting the sealing performance. In addition, by fitting with the protruding sealing ring, when dust falls outside the protruding sealing ring, it slides downward under the action of gravity to reduce the accumulation of dust, prevent the deterioration of the sealing performance due to the accumulation of dust, and further solve the problems pointed out in the background art.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Hereinafter, the technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the drawings of the embodiments of the present invention. Of course, the embodiments described here are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present invention are within the scope of protection of the present invention.

[0015] As shown in FIGS. 1, 2, and 3, the technical solution provided by the present invention is a pneumatic flap door sealing device, which includes a door panel 1 and a door frame 2. The door panel 1 is provided at the upper end of the door frame 2. A strip-shaped graphite packing 4 is provided at the lower part of the door panel 1. Circular graphite packings 5 are provided on both sides at the lower end of the strip-shaped graphite packing 4 at the lower part of the door panel 1. A protruding sealing ring 3 is provided below and between the two circular graphite packings 5 at the upper end of the door frame 2. The longitudinal section of the protruding sealing ring 3 is triangular. Fixed side plates 6 are provided on both sides outside the circular graphite packing 5 at the lower part of the door frame 1. In addition, an automatic flue gas suction module, an automatic chemical injection module, an automatic stirring module, and an automatic shower module can be added on the door panel 1 side. It does not require a flue gas bypass, has a high degree of automation, excellent purification effect in combination with compressed air purging, and meets the environmental protection requirements and sustainable development requirements. Since the automatic flue gas suction module, the automatic chemical injection module, the automatic stirring module, and the automatic shower module are existing technologies, no further explanation is given in the claims and the specification.

[0016] As shown in FIGS. 1, 2, and 3, an outer ring 7 is provided outside the door frame 1, and the outer ring 7 and the door frame 1 are connected via bolts. A side shell 9 is provided on the outer side of the outer ring 7.

[0017] As shown in FIGS. 1, 2, and 3, annular grooves 8 are provided on both the upper and lower sides outside the outer ring 7, and the annular grooves 8 are integrally formed with the outer ring 7. The annular grooves 8 are used to limit the movement locus of the side shell 9.

[0018] As shown in FIG. 2, balls 10 are provided on both the upper and lower sides inside the side shell 9, and the balls 10 are movably connected to the side shell 9. The balls 9 are fitted into the annular grooves 8. The installation of the balls 10 makes the movement of the side shell 9 smoother.

[0019] As shown in Fig. 2, an L-shaped inner frame 11 is provided at the lower end side of the side shell 9, a return spring 12 is provided at the lower end of the L-shaped inner frame 11, and with the installation of the return spring 12, the inner panel 13 is provided with an automatic return function, thereby helping to push down the inner panel 13 to enhance the cleaning force.

[0020] As shown in Fig. 2, an inner panel 13 is provided at the lower end of the return spring 12, and a brush 14 is provided on the side approaching the protruding seal ring 3 at the lower end of the inner panel 13. The brush 14 is used to clean the dust outside the protruding seal ring 3.

[0021] In this technical solution, when the door panel 1 is closed through the pneumatic component, the circular graphite packing 5 at the lower end of the door panel 1 is combined with the protruding seal ring 3, and the two circular graphite packings 5 are in close contact with the inner and outer sides of the protruding seal ring 3, and are combined with the strip-shaped graphite packing 4 to seal the upper part of the circular graphite packing 5, playing a role in blocking the intrusion of dust. Compared with the conventional graphite packing, this solution can prevent dust from adhering to the outside of the graphite packing and affecting the sealing performance. When cleaning the dust outside the door frame 2, the side shell 9 is rotated along the outer ring 7, and the side shell 9 is fitted with the annular groove 8 through the ball 10, so that the side shell 9 is fitted with the L-shaped inner frame 11 and the inner panel 13 to drive the brush 14 to make one rotational movement around the door frame 2, thereby cleaning the outside of the protruding seal ring 3 and preventing the accumulation of dust.

[0022] In this specification, it should be explained that relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of such an actual relationship or order between these entities or operations. Also, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, where a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0023] As described above, the embodiments of the present invention have been shown and described. Those skilled in the art can make various changes, modifications, exchanges, and variations to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is limited by the claims and their equivalents.

Explanation of Reference Numerals

[0024] 1: Door panel, 2: Door frame, 3: Protruding seal ring, 4: Strip graphite packing, 5: Circular graphite packing, 6: Fixed side plate, 7: Outer ring, 8: Annular groove, 9: Side shell, 10: Ball, 11: L-shaped inner frame, 12: Return spring, 13: Inner panel, 14: Brush

Claims

1. A pneumatic flap door sealing device, comprising: The door panel (1) and the door frame (2) are included. The door panel (1) is provided at the upper end of the door frame (2), A band-shaped graphite packing (4) is provided on the lower part of the door panel (1), Circular graphite packings (5) are provided on both sides of the lower end of the band-shaped graphite packing (4) at the bottom of the door panel (1), A protruding seal ring (3) is provided below the upper end of the door frame (2) between two circular graphite packings (5); The longitudinal section of said protruding seal ring (3) is triangular; The pneumatic flap door sealing device has fixed side plates (6) on both sides located outside the circular graphite packing (5) at the bottom of the door frame (1).

2. An outer ring (7) is provided on the outside of the door frame (1), and The outer ring (7) and the door frame (1) are connected via bolts.

2. The pneumatic flap door sealing device according to claim 1, wherein a side shell (9) is provided on the outer side of the outer ring (7).

3. The outer ring (7) is provided with annular grooves (8) on both the upper and lower sides of the outside thereof, and 3. A pneumatic flap door sealing device according to claim 2, wherein the annular groove (8) is integrally formed with the outer ring (7).

4. The side shell (9) is provided with balls (10) on both the upper and lower sides inside the side shell (9), The ball (10) is movably connected to the side shell (9); 4. The pneumatic flap door sealing device according to claim 3, wherein said ball (10) fits into an annular groove (8).

5. An L-shaped inner frame (11) is provided on the lower end side of the side shell (9), The pneumatic flap door sealing device according to claim 4, wherein a return spring (12) is provided at the lower end of the L-shaped inner frame (11).

6. An inner panel (13) is provided at the lower end of the return spring (12), 6. The pneumatic flap door sealing device according to claim 5, wherein a brush (14) is provided on the lower end of the inner panel (13) on the side close to the protruding seal ring (3).

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