Pneumatic quick-opening air door device

Abstract

The utility model relates to the technical field of flue air doors, and discloses a pneumatic quick-opening air door device which comprises an outer shell, a connecting seat is fixedly assembled on the outer wall of the outer shell, an air cylinder is movably connected to the outer edge of the connecting seat, a connecting piece is movably connected to a power output shaft of the air cylinder, and the connecting piece is fixedly connected with the outer wall of the outer shell. A connecting shaft is fixedly connected to the inner wall of the connecting piece in a sleeving mode, a middle blade is fixedly assembled at the end, away from the connecting piece, of the connecting shaft, a left blade and a right blade are arranged on the left side and the right side of the middle blade respectively, and a blocking strip is fixedly assembled on the inner wall of the outer shell. The bolt and the nut are detached, then the first sleeve and the second sleeve move in the opposite direction of the blade body, at the moment, the blade body can be taken down to be replaced, and then the problems that an existing air door blade is corroded and cannot be used due to long-time contact with smoke, and the existing air door blade cannot be independently replaced, so that the service life of the blade is prolonged are solved. And the whole body needs to be replaced when being damaged, so that the maintenance cost is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of flue dampers, in particular to a pneumatic quick-opening damper device. Background Art

[0002] The smoke and air duct is the pipe for exhausting smoke and taking in air from the industrial furnace. The pipe is equipped with a damper (valve) to adjust the wind speed and pressure in the pipe. It is composed of the heating surface pipe of the furnace wall and the wall-wrapped pipe. It is divided into horizontal smoke duct and tail smoke duct.

[0003] During long-term use of the existing damper, the blades on the damper will come into contact with the smoke. Long-term contact will cause the blades to be corroded and become unusable. The existing damper blades cannot be replaced individually and need to be replaced as a whole when damaged, which leads to the problem of increased maintenance costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pneumatic quick-opening damper device, which has the advantages of replaceable blades and reduced maintenance costs, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a pneumatic quick-opening damper device, comprising an outer shell, an outer wall of the outer shell is fixedly equipped with a connecting seat, an outer edge of the connecting seat is movably connected to a cylinder, a connecting piece is movably connected to a power output shaft of the cylinder, an inner wall of the connecting piece is fixedly sleeved with a connecting shaft, an end of the connecting shaft away from the connecting piece is fixedly equipped with a middle blade, a left blade and a right blade are respectively provided on the left and right sides of the middle blade, and a baffle is fixedly equipped on the inner wall of the outer shell.

[0006] As a preferred technical solution of the utility model, a rotating plate is fixedly installed on the outer edge of the connecting shaft, one end of the rotating plate is movably connected to a pull rod, and the end of the pull rod away from the rotating plate is movably connected to a pull tab, and the inner wall of the pull tab is fixedly sleeved on the outer edge of the right blade.

[0007] As a preferred technical solution of the utility model, the other end of the rotating plate is movably connected to a pull rod 2, and the end of the pull rod 2 away from the rotating plate is movably connected to a pull tab 2, and the inner wall of the pull tab 2 is fixedly sleeved on the outer edge of the left blade, and the right blade, the left blade and the middle blade have the same structure.

[0008] As a preferred technical solution of the utility model, the right blade includes a blade body, and sleeve one and sleeve two are movably connected at both ends of the blade body, and connecting column one and connecting column two are slidably connected on the inner walls of sleeve one and sleeve two.

[0009] As a preferred technical solution of the utility model, both ends of the blade body are provided with vertical holes, the outer edges of the sleeves 1 and 2 are provided with vertical holes, the inner cavities of the vertical holes are provided with bolts, and the outer edges of the bolts are threadedly connected with nuts.

[0010] As a preferred technical solution of the utility model, there are two baffles, and the two baffles are respectively located between the right blade and the middle blade, and between the middle blade and the left blade. The top of the baffle is fixedly equipped with a sealing strip 1, and the bottom of the baffle is fixedly equipped with a sealing strip 2.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The pneumatic quick-opening damper device removes the bolts and nuts and then moves the sleeve one and the sleeve two in the opposite direction of the blade body. At this time, the blade body can be removed for replacement, thereby solving the problem that the existing damper blades are corroded and cannot be used due to long-term contact with smoke, and the existing damper blades cannot be replaced individually. When damaged, they need to be replaced as a whole, which increases the maintenance cost.

[0013] 2. The pneumatic quick-opening damper device is provided with a baffle strip, a sealing strip 1 and a sealing strip 2, so that baffle strips, a sealing strip 1 and a sealing strip 2 are provided between the right blade and the middle blade, and between the middle blade and the left blade. The joints between the right blade and the middle blade, and between the middle blade and the left blade can be sealed by the sealing strip 1 and the sealing strip 2, so that the sealing performance of the device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the right blade of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of a sleeve of the utility model.

[0020] In the figure: 1. outer shell; 2. connecting seat; 3. cylinder; 4. connecting plate; 5. connecting shaft; 6. rotating plate; 7. pull rod 1; 8. pull tab 1; 9. right blade; 901. blade body; 902. sleeve 1; 903. sleeve 2; 904. vertical hole; 905. bolt; 906. nut; 907. connecting column 1; 908. connecting column 2; 10. pull rod 2; 11. pull tab 2; 12. left blade; 13. middle blade; 14. stop strip; 15. sealing strip 1; 16. sealing strip 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 A pneumatic quick-opening damper device comprises an outer shell 1, an outer wall of the outer shell 1 is fixedly equipped with a connecting seat 2, an outer edge of the connecting seat 2 is movably connected to a cylinder 3, a connecting piece 4 is movably connected to the power output shaft of the cylinder 3, a connecting shaft 5 is fixedly sleeved on the inner wall of the connecting piece 4, a middle blade 13 is fixedly equipped on the end of the connecting shaft 5 away from the connecting piece 4, a left blade 12 and a right blade 9 are respectively provided on the left and right sides of the middle blade 13, a baffle 14 is fixedly equipped on the inner wall of the outer shell 1, the connecting piece 4 is rotated by the extension and contraction of the cylinder 3, and the connecting piece 4 drives the connecting shaft 5 and the middle blade 13 to rotate, so that the middle blade 13 is opened, and when the middle blade 13 is in a closed state, the middle blade 13 contacts the baffle 14, and the baffle 14 is used to seal the middle blade 13 and the right blade 9, thereby improving the sealing performance of the device.

[0023] In a preferred embodiment, a rotating piece 6 is fixedly mounted on the outer edge of the connecting shaft 5, one end of the rotating piece 6 is movably connected to a pull rod 7, and the end of the pull rod 7 away from the rotating piece 6 is movably connected to a pull tab 8, and the inner wall of the pull tab 8 is fixedly sleeved on the outer edge of the right blade 9. The connecting shaft 5 rotates to drive the rotating piece 6 to rotate. At this time, the rotating piece 6 pulls the pull rod 7, and the pull rod 7 pulls the pull tab 8, so that the right blade 9 can be opened, so that the right blade 9 and the middle blade 13 can be opened and closed at the same time.

[0024] In a preferred embodiment, the other end of the rotating piece 6 is movably connected to a pull rod 2 10, and the end of the pull rod 2 10 away from the rotating piece 6 is movably connected to a pull tab 2 11, and the inner wall of the pull tab 2 11 is fixedly sleeved on the outer edge of the left blade 12. The right blade 9, the left blade 12 and the middle blade 13 have the same structure. At the same time, the rotating piece 6 pulls the pull rod 2 10, and the pull rod 2 10 pulls the pull tab 2 11, so that the left blade 12 can be opened, so that the right blade 9, the left blade 12 and the middle blade 13 can be opened and closed at the same time.

[0025] In a preferred embodiment, the right blade 9 includes a blade body 901, and the two ends of the blade body 901 are respectively movably connected with a sleeve 1 902 and a sleeve 2 903, and the inner walls of the sleeve 1 902 and the sleeve 2 903 are respectively slidably connected with a connecting column 1 907 and a connecting column 2 908. The sleeve 1 902 and the sleeve 2 903 are sleeved on the blade body 901. When the blade body 901 needs to be replaced, we need to remove the bolt 905 and the nut 906, and then slide the sleeve 1 902 and the sleeve 2 903 on the connecting column 1 907 and the connecting column 2 908 to separate the sleeve 1 902 and the sleeve 2 903 from the blade body 901. At this time, the blade body 901 can be replaced.

[0026] In a preferred embodiment, vertical holes 904 are provided at both ends of the blade body 901, and vertical holes 904 are provided at the outer edges of sleeve one 902 and sleeve two 903. Bolts 905 are provided in the inner cavity of the vertical hole 904, and nuts 906 are threadedly connected to the outer edge of the bolts 905. By utilizing the arrangement of the bolts 905 and the nuts 906, sleeve one 902 and sleeve two 903 are fixed to the blade body 901 by the bolts 905 and the nuts 906, so that the blade body 901 on the device is easy to disassemble and install.

[0027] In a preferred embodiment, two baffles 14 are provided, and the two baffles 14 are respectively located between the right blade 9 and the middle blade 13, and between the middle blade 13 and the left blade 12. A sealing strip 15 is fixedly installed on the top of the baffle 14, and a sealing strip 2 16 is fixedly installed on the bottom of the baffle 14. By utilizing the arrangement of the sealing strip 15 and the sealing strip 2 16, the joints between the right blade 9 and the middle blade 13, and between the middle blade 13 and the left blade 12 can be sealed by the sealing strip 15 and the sealing strip 2 16, thereby improving the sealing performance of the device.

[0028] Working principle: when in use, the cylinder 3 is extended and retracted to drive the connecting piece 4 to rotate, the connecting piece 4 drives the connecting shaft 5 and the middle blade 13 to rotate, the connecting shaft 5 rotates to drive the rotating piece 6 to rotate, and at the same time, the rotating piece 6 pulls the pull rod 1 7, the pull rod 1 7 pulls the pull tab 1 8, the rotating piece 6 rotates and pulls the pull rod 2 10, and the pull rod 2 10 pulls the pull tab 2 11, so that the right blade 9, the left blade 12 and the middle blade 13 can be opened and closed at the same time. When the blade body 901 needs to be replaced, the bolt 905 Remove the sleeve 1 902 and the nut 906, and then move the sleeve 1 902 and the sleeve 2 903 in the opposite direction of the blade body 901. At this time, the blade body 901 can be removed for replacement, and the two ends of the new blade body 901 are placed between the sleeve 1 902 and the sleeve 2 903, and then move the sleeve 1 902 and the sleeve 2 903 in the direction of the sleeve 1 902 and the sleeve 2 903, so that the sleeve 1 902 and the sleeve 2 903 are on the blade body 901, and then fix them with bolts 905 and nuts 906.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic quick-opening damper device, comprising an outer shell (1), characterized in that: The outer wall of the outer shell (1) is fixedly equipped with a connecting seat (2), the outer edge of the connecting seat (2) is movably connected to a cylinder (3), a connecting plate (4) is movably connected to the power output shaft of the cylinder (3), a connecting shaft (5) is fixedly sleeved on the inner wall of the connecting plate (4), a middle blade (13) is fixedly equipped at one end of the connecting shaft (5) away from the connecting plate (4), a left blade (12) and a right blade (9) are respectively provided on the left and right sides of the middle blade (13), and a retaining bar (14) is fixedly equipped on the inner wall of the outer shell (1).

2. A pneumatic quick-opening damper device according to claim 1, characterized in that: A rotating plate (6) is fixedly mounted on the outer edge of the connecting shaft (5), one end of the rotating plate (6) is movably connected to a pull rod (7), and the end of the pull rod (7) away from the rotating plate (6) is movably connected to a pull tab (8), and the inner wall of the pull tab (8) is fixedly sleeved on the outer edge of the right blade (9).

3. A pneumatic quick-opening damper device according to claim 2, characterized in that: The other end of the rotating plate (6) is movably connected to a pull rod 2 (10), and the end of the pull rod 2 (10) away from the rotating plate (6) is movably connected to a pull tab 2 (11), and the inner wall of the pull tab 2 (11) is fixedly sleeved on the outer edge of the left blade (12). The right blade (9), the left blade (12) and the middle blade (13) have the same structure.

4. A pneumatic quick-opening damper device according to claim 1, characterized in that: The right blade (9) comprises a blade body (901), and sleeve 1 (902) and sleeve 2 (903) are movably sleeved at two ends of the blade body (901), and connecting column 1 (907) and connecting column 2 (908) are slidably sleeved on the inner walls of sleeve 1 (902) and sleeve 2 (903).

5. A pneumatic quick-opening damper device according to claim 4, characterized in that: Both ends of the blade body (901) are provided with vertical holes (904), the outer edges of the sleeve 1 (902) and the sleeve 2 (903) are provided with vertical holes (904), the inner cavity of the vertical hole (904) is provided with a bolt (905), and the outer edge of the bolt (905) is threadedly connected with a nut (906).

6. A pneumatic quick-opening damper device according to claim 1, characterized in that: There are two baffles (14) in total, and the two baffles (14) are respectively located between the right blade (9) and the middle blade (13), and between the middle blade (13) and the left blade (12). The top of the baffle (14) is fixedly equipped with a sealing strip 1 (15), and the bottom of the baffle (14) is fixedly equipped with a sealing strip 2 (16).

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