CN212056024U

CN212056024U - Combined sealed type panel turnover hot air isolation door

Info

Publication number: CN212056024U
Application number: CN202020352276.7U
Authority: CN
Inventors: 吴勇平; 吴海泉; 张守宝; 张鹏飞; 牛春雷; 康正文; 吴鑫瑞; 陆俊超; 司战勋; 吴雨洁
Original assignee: YANGZHOU RUNDA PNEUMATIC HYDRAULIC EQUIPMENT CO Ltd
Current assignee: YANGZHOU RUNDA PNEUMATIC HYDRAULIC EQUIPMENT CO Ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-12-01
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a combined sealed type plate turnover hot air isolation door, which comprises an air duct, a door frame and a door plate; the door frame is positioned in one end of the air inlet of the air duct, and the peripheries of the door frame and the air inlet are in sealed fit; the upper edge of the door plate is hinged with the door frame, the door plate is connected with the driving device through the connecting rod mechanism, two sealing rings are arranged on the periphery of the door frame facing the door plate, and a hole is formed in the door frame, and the outside of the hole is connected with an air blower. By adopting the technical scheme, the two sealing rings are arranged on the door frame, so that the sealing performance is enhanced, and the sealing ring grooves are formed in a combined mode. Then, a hole is formed in the door frame and communicated with the hollow annular groove in the middle of the sealing ring, the other end of the hole is connected with the air blower, when the door plate is closed, the air blower is started to blow cold air to the annular groove in the middle of the sealing ring, and reverse sealing air is formed by utilizing the pressure difference between the cold air and hot air. The leakage of hot air can be effectively prevented when the deformation leakage occurs. And meanwhile, the temperature in the pipeline is effectively reduced by utilizing cold air.

Description

Combined sealed type panel turnover hot air isolation door

Technical Field

The utility model belongs to the technical field of turn over the hot-blast isolated door of board, concretely relates to combination sealed turns over hot-blast isolated door of board.

Background

It is known in the thermal power generation industry that several coal mills are arranged in a generator set of a thermal power plant, and pulverized coal processed by the coal mills needs to be fed into a boiler furnace through high-temperature hot air. Wherein the temperature of hot air at the inlet of the coal mill is as high as nearly 500 ℃. In order to ensure that each coal mill can normally operate, the coal mills need to be overhauled and maintained in turn. In the coal mill overhauls and maintains the in-process, for the safety of guaranteeing to overhaul and maintainer entering coal pulverizer, need set up isolated door at the coal mill entrance and avoid hot-blast entering coal mill to the temperature in the coal pulverizer is in the within range that the human body can bear when guaranteeing to overhaul and maintain. At present, the isolation door that the coal pulverizer entrance used is mostly the board-inserting type isolation door and the board-turning type isolation door. Wherein picture peg formula isolation door is because the structure is complicated, and the fault rate is high, and the motion of picture peg and sealing washer is the contact slip, and is great to the wearing and tearing of sealing washer, so will be eliminated gradually. The turnover plate type isolation door is characterized in that the turnover plate type door plate is in contact with the sealing ring in a combined and separated mode, and the sealing ring is hardly abraded, so that the turnover plate type isolation door is gradually accepted by the market. However, the flap hot air isolation door on the market at present is provided with a circle of sealing strip on the door frame, namely the flap hot air isolation door is sealed by the circle of sealing strip. When the pipeline maintenance device is used at the beginning, the sealing effect is still good, but after long-term use, deformation of the door plate and the door frame (because the equipment is high in 500 ℃ high-temperature gas and the door frame is large) can cause the phenomena of loose sealing and gas leakage, the temperature in the channel is too high, and personnel cannot enter the pipeline to be maintained.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: to the deficiency that prior art exists, the utility model aims at providing a hot-blast isolated door of board is turned over to combination sealed.

The technical scheme is as follows: in order to realize the purpose of the utility model, the utility model discloses a technical scheme as follows:

the utility model discloses a combined sealed type plate turnover hot air isolation door, which comprises an air duct, a door frame and a door plate; the door frame is positioned in one end of the air inlet of the air duct, and the peripheries of the door frame and the air inlet are in sealed fit; the upper edge of the door plate is hinged with the door frame, and the door plate is connected with the driving device through the connecting rod mechanism to realize the opening and closing of the door plate around the door frame; the door frame is provided with twice sealing washer towards the door plant all around, and twice sealing washer form the combined seal ring, forms hollow groove in the middle of the combined seal ring, be provided with the hole in the door frame, the hole is the L type, and one end and hollow groove switch-on, the other end pass the wind channel wall and access to the outside, the hole external connection has the air-blower. By adopting the technical scheme, the two sealing rings are arranged on the door frame, so that the sealing performance is enhanced, and the sealing ring grooves are formed in a combined mode. Then, a hole is formed in the door frame and communicated with the hollow annular groove in the middle of the sealing ring, the other end of the hole is connected with the air blower, when the door plate is closed, the air blower is started to blow cold air to the annular groove in the middle of the sealing ring, and reverse sealing air is formed by utilizing the pressure difference between the cold air and hot air. The leakage of hot air can be effectively prevented when the deformation leakage occurs. And meanwhile, the temperature in the pipeline is effectively reduced by utilizing cold air.

Furthermore, an extension pipeline is arranged at the hole of the outer wall of the air duct, and the outer edge pipeline is connected with an air outlet pipe of the air blower. Adopt above-mentioned technical scheme to increase and set up outer convenient being connected with the air-blower along the pipeline.

Further, set up twice slot on the door frame, twice sealing washer sets up and sets up respectively in twice slot, and the sealing washer is higher than the slot. Adopt above-mentioned technical scheme to compare the sealing washer setting on the door frame surface with current directness, the sealing washer setting has not only increased the firmness of sealing washer in the slot to the height of hollow groove has been increased.

Furthermore, the door frame is arranged in an inclined manner, and the lower edge of the door frame inclines towards the inside of the air duct; the periphery of the door frame is welded on the inner wall of the air duct.

Furthermore, the upper edge of the door plate is hinged with the door frame through a hinge pin, a hinge shaft fixing seat is arranged on the air duct, and the hinge pin is fixed on the hinge shaft fixing seat.

Furthermore, a fixed support is arranged at the upper end of the air duct and is U-shaped, a hinge shaft support is arranged on a longitudinal truss of the fixed support, and a rotating shaft is erected between two transverse trusses on the other side; the driving device is an air cylinder, an air cylinder trunnion is arranged on an air cylinder shell, and the air cylinder trunnion is fixed on the hinge shaft support; the connecting rod mechanism comprises a force arm, a large connecting rod and a small connecting rod, one end of the force arm is connected with a fork head of the air cylinder, and the other end of the force arm is sleeved on the rotating shaft; one end of the large connecting rod is sleeved on the rotating shaft, the other end of the large connecting rod is hinged with the small connecting rod, and the small connecting rod is hinged with the door panel. The rotating shaft is fixed with the force arm and the large connecting rod through a flat key.

Furthermore, a limiting plate is arranged on the air duct at the position of the force arm, a through hole is formed in the limiting plate and penetrates through the rotating shaft, two first limiting holes are formed in the limiting plate, and a second limiting hole is formed in the corresponding force arm.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is following: the utility model discloses a hot-blast isolated door of board is turned over to combination sealed is through installing twice sealing washer on the door frame, owing to be twice sealing washer, has not only strengthened the leakproofness, still organizes and form the sealed annular simultaneously. Then, a hole is formed in the door frame and communicated with the hollow annular groove in the middle of the sealing ring, the other end of the hole is connected with the air blower, when the door plate is closed, the air blower is started to blow cold air to the annular groove in the middle of the sealing ring, and reverse sealing air is formed by utilizing the pressure difference between the cold air and hot air. The leakage of hot air can be effectively prevented when the deformation leakage occurs. And meanwhile, the temperature in the pipeline is effectively reduced by utilizing cold air.

Drawings

Fig. 1 is a perspective view of the external structure of the present invention;

FIG. 2 is a transverse cross-sectional internal block diagram of the intermediate position of FIG. 1;

FIG. 3 is a structural view of a door panel and a door frame;

fig. 4 is an enlarged view at I in fig. 3.

Detailed Description

The present invention will be further clarified by the following embodiments, which are implemented on the premise of the technical solution of the present invention, with reference to the attached drawings, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 and 2, the utility model discloses a combined sealed type flap hot air isolation door, which comprises an air duct 1, a door frame 2 and a door plate 3; the air duct 1 is a rectangular frame with openings at two ends, the door frame 2 is positioned at one end of an air inlet of the air duct 1 and is arranged in an inclined manner, and the lower edge of the door frame inclines towards the inside of the air duct 1; the periphery of the door frame 2 is welded on the inner wall of the air duct 1 and is in sealing fit with the air duct 1. The upper edge of the door plate 3 is hinged with the door frame 2 through a pin shaft 20, a hinge shaft fixing seat 21 is arranged on the air duct 1, and the pin shaft 20 is fixed on the hinge shaft fixing seat 21.

The door plate 3 is connected with the driving device through a connecting rod mechanism, and the opening and closing of the door plate 3 around the door frame 2 are realized. The structure is that the upper end of the air duct 1 is provided with a fixed support 8, the fixed support 8 is U-shaped, a longitudinal truss of the fixed support 8 is provided with a hinged shaft support 9, and a rotating shaft 10 is erected between two transverse trusses on the other side; the driving device is an air cylinder 11, an air cylinder trunnion 12 is arranged on the shell of the air cylinder 11, and the air cylinder trunnion 12 is fixed on the hinge support 9; the link mechanism comprises a force arm 13, a large link 14 and a small link 15, one end of the force arm 13 is connected with a fork 16 of the cylinder 11, and the other end is sleeved on the rotating shaft 10; one end of the big connecting rod 14 is sleeved on the rotating shaft 10, the other end of the big connecting rod is hinged with the small connecting rod 15, and the small connecting rod 15 is hinged with the door panel 3. The rotating shaft 10 is fixed with the force arm 13 and the large connecting rod 14 through a flat key. The fork 16 of the cylinder 11 can do telescopic motion and drive the power arm 13 to swing, the arm of force 13 swings to drive the rotating shaft 10 to rotate, the rotating shaft 10 drives the large connecting rod 14 to swing, the large connecting rod 14 drives the small connecting rod 15, and the small connecting rod 15 drives the door panel 3 to open and close around the pin shaft.

The air duct 1 at the position of the force arm 13 is provided with a limiting plate 17, the limiting plate 17 is provided with a through hole which penetrates through the rotating shaft 10, the limiting plate 17 is provided with two limiting holes I18, and the corresponding force arm 13 is provided with a limiting hole II 19. When the door panel 3 is opened, the second limiting hole 19 on the force arm 13 corresponds to the first limiting hole 18 on one side of the limiting plate 17, the limiting pin penetrates through the first limiting hole 18 and the second limiting hole 19 to fix the force arm 13, and the door panel 3 is ensured to be in an opened state.

As shown in fig. 3 and 4, the door frame 2 is provided with two sealing rings 4 around the door panel 3, the two sealing rings 4 form a combined sealing ring, a hollow groove 5 is formed in the middle of the combined sealing ring, a hole 6 is formed in the door frame 2, the hole 6 is L-shaped, one end of the hole is communicated with the hollow groove 5, the other end of the hole passes through the wall of the air duct 1 to be led to the outside, and the hole 6 is externally connected with an air blower.

As shown in fig. 1 and 4, an extension pipe 7 is arranged at a hole 6 on the outer wall of the air duct 1, and the extension pipe is connected with an air outlet pipe of the blower. The outer edge pipeline is convenient to be connected with the air blower. Fig. 4 also shows the sealing enhancement principle of the present invention, in which the blower is started to blow cold air into the hollow groove 5 in the middle of the sealing ring, and a sealing air is formed by using the pressure difference between the cold air and the hot air. Effectively prevent the leakage of hot air.

Two grooves are formed in the door frame 2, two sealing rings 4 are arranged in the two grooves respectively, and the sealing rings 4 are higher than the grooves. Compare with the current directness with sealing washer 4 setting on door frame 2 surfaces, sealing washer 4 sets up not only has increased the firmness of sealing washer 4 in the slot to the height of hollow groove 5 has been increased.

The utility model discloses a theory of operation is: the door frame is provided with two sealing rings which are combined to form a sealing ring, a hole is formed in the door frame and communicated with a hollow groove in the middle of the sealing ring, the other end of the hole is connected with an air blower, when the door plate is closed, the air blower is started to blow cold air into the hollow groove, and a sealing air is formed by utilizing the pressure difference between the cold air and the hot air. Effectively prevent the leakage of hot air.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A combined sealed type turning plate hot air isolation door comprises an air duct (1), a door frame (2) and a door plate (3); the door frame (2) is positioned in one end of the air inlet of the air duct (1), and the peripheries of the door frame and the air inlet are in sealed fit; the upper edge of the door plate (3) is hinged with the door frame (2), and the door plate (3) is connected with the driving device through a connecting rod mechanism to realize the opening and closing of the door plate (3) around the door frame (2); the method is characterized in that: door frame (2) are provided with twice sealing washer (4) around towards door plant (3), and twice sealing washer (4) form the combined seal ring, form hollow groove (5) in the middle of the combined seal ring, be provided with hole (6) in door frame (2), hole (6) are the L type, and one end and hollow groove (5) switch-on, the other end pass wind channel (1) wall and access to the outside, hole (6) external connection has the air-blower.

2. The combined sealing type flap hot air isolation door according to claim 1, characterized in that: an extension pipeline (7) is arranged at a hole (6) on the outer wall of the air duct (1), and the outer edge pipeline is connected with an air outlet pipe of the air blower.

3. The combined sealing type flap hot air isolation door according to claim 1, characterized in that: two grooves are formed in the door frame (2), two sealing rings (4) are arranged in the two grooves respectively, and the sealing rings (4) are higher than the grooves.

4. The combined sealing type flap hot air isolation door according to claim 1, characterized in that: the door frame (2) is arranged in an inclined manner, and the lower edge of the door frame is inclined towards the inside of the air duct (1); the periphery of the door frame (2) is welded on the inner wall of the air duct (1).

5. The combined sealing type flap hot air isolation door according to claim 1, characterized in that: the air duct is characterized in that the upper edge of the door plate (3) is hinged with the door frame (2) through a pin shaft (20), a hinge shaft fixing seat (21) is arranged on the air duct (1), and the pin shaft (20) is fixed on the hinge shaft fixing seat (21).

6. The combined sealing type flap hot air isolation door according to claim 1, characterized in that: a fixed support (8) is arranged at the upper end of the air duct (1), the fixed support (8) is U-shaped, a hinge shaft support (9) is arranged on a longitudinal truss of the fixed support (8), and a rotating shaft (10) is erected between two transverse trusses on the other side; the driving device is an air cylinder (11), an air cylinder trunnion (12) is arranged on the shell of the air cylinder (11), and the air cylinder trunnion (12) is fixed on the hinge support (9); the connecting rod mechanism comprises a force arm (13), a large connecting rod (14) and a small connecting rod (15), one end of the force arm (13) is connected with a fork head (16) of the cylinder (11), and the other end of the force arm is sleeved on the rotating shaft (10); one end of the big connecting rod (14) is sleeved on the rotating shaft (10), the other end of the big connecting rod is hinged with the small connecting rod (15), and the small connecting rod (15) is hinged with the door panel (3).

7. The combined sealed flap hot air isolation door according to claim 6, wherein: the air duct (1) at the position of the force arm (13) is provided with a limiting plate (17), the limiting plate (17) is provided with a through hole which penetrates through the rotating shaft (10), the limiting plate (17) is provided with two limiting holes I (18), and the corresponding force arm (13) is provided with a limiting hole II (19).