Suspension type pneumatic hot air double-plugboard isolation door

Abstract

The embodiment of the utility model discloses a suspension type pneumatic hot air double-plugboard isolation door, the suspension type pneumatic hot air double-plugboard isolation door comprises a frame, a power assembly, a door plate assembly and a suspension assembly, the frame is provided with an accommodating cavity and a chamber which are communicated with each other, and an opening penetrating through the accommodating cavity, the accommodating cavity is used for accommodating the door plate assembly, and the suspension assembly is used for suspending the door plate assembly. The cavity is used for containing the hanging assembly, the hanging assembly is connected with the door plate assembly and used for hanging the door plate assembly on the frame, the power assembly is installed on the frame and connected with the door plate assembly, the power assembly drives the door plate assembly to move, and the door plate assembly drives the hanging assembly to move in the cavity so that the door plate assembly can close the opening. Due to the fact that the frame is provided with the hanging assembly to hang the door plate assembly, the bottom of the frame is not provided with a walking guide rail, the bottom space of the frame is not blocked, generated accumulated dust can be taken away by hot air flow, and the situation that the door plate assembly is jammed by the accumulated dust is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal-fired thermal power generation, in particular to a suspended pneumatic hot air double-insertion plate isolation door. Background Art

[0002] The hot air isolation door in the pulverizing system of coal-fired thermal power units is extremely important. Whether the isolation door can be opened and closed normally, whether it is closed tightly, and whether it is reliable after closing will affect the safe operation of the pulverizing system and the personal safety of maintenance personnel. In thermal power plants, there have been many incidents of personal injury, burns, etc. caused by the hot air isolation door not closing tightly, which has led to personal injury, burns, etc. to personnel who are repairing downstream equipment. The existing plug-in isolation door adopts a guide rail at the bottom during use, and the isolation door roller runs on the guide rail. Because the hot air in the air duct carries a lot of ash during use, the ash will gather at the bottom guide rail of the isolation door. When the amount of accumulated ash reaches a certain level, it will affect the operation of the isolation door guide rail, and the switch will frequently fail to be in place. In serious cases, the door panel will be stuck. Utility Model Content

[0003] Based on this, it is necessary to provide a suspended pneumatic hot air double-plug isolation door, which aims to solve the problem that the existing plug-in isolation door adopts a guide rail at the bottom during use, and the isolation door roller runs on the guide rail. During use, the hot air in the air duct carries a large amount of dust, and the dust will gather at the bottom guide rail of the isolation door. When the amount of accumulated dust reaches a certain level, it affects the operation of the isolation door guide rail, and the switch frequently fails to be in place. In serious cases, the door panel may be stuck.

[0004] The utility model provides a suspended pneumatic hot air double-insulating plate insulating door, which comprises a frame, a power assembly, a door panel assembly and a suspension assembly. The frame is provided with a receiving cavity and a chamber that are interconnected, and an opening that passes through the receiving cavity. The receiving cavity is used to receive the door panel assembly, and the chamber is used to receive the suspension assembly. The suspension assembly is connected to the door panel assembly and is used to suspend the door panel assembly on the frame. The power assembly is installed on the frame and connected to the door panel assembly.

[0005] The power assembly drives the door panel assembly to move, and the door panel assembly drives the suspension assembly to move in the chamber, so that the door panel assembly closes the opening.

[0006] In one embodiment, the suspension assembly includes a mounting frame, a roller and a guide rail, the mounting frame is mounted on the door panel assembly, the guide rail is installed in the chamber, and the roller is rotatably connected to the mounting frame and rollingly connected to the guide rail.

[0007] In one embodiment, two suspension components are provided and symmetrically arranged on both sides of the door panel assembly.

[0008] In one embodiment, the power assembly includes a power element, a linkage head and a linkage pin. The door panel assembly includes a first door panel and a second door panel. The power element is connected to the linkage pin through the linkage head. One end of the linkage pin is inserted into one end of the first door panel, and the other end is inserted into one end of the second door panel.

[0009] In one embodiment, the suspended pneumatic hot air double-plate isolation door further includes a locking assembly. The locking assembly includes a connecting shaft, a connecting piece, a first connecting rod and a second connecting rod. One end of the first connecting rod is rotatably connected to the first door panel, and the other end is rotatably connected to the connecting piece. One end of the second connecting rod is rotatably connected to the second door panel, and the other end is rotatably connected to the connecting piece. The connecting piece is fixed on the connecting shaft;

[0010] During the process that the power assembly drives the first door panel and the second door panel to close the opening, the first door panel and the second door panel drive the connecting shaft, the connecting piece, the first connecting rod and the second connecting rod to move. When the connecting shaft abuts against the frame, the connecting shaft drives the connecting piece to drive the first connecting rod and the second connecting rod to swing. The first connecting rod and the second connecting rod respectively drive the first door panel and the second door panel to move away from each other, so that the first door panel and the second door panel respectively abut against the frame.

[0011] In one embodiment, two locking assemblies are provided and symmetrically arranged at both ends of the first door panel and the second door panel.

[0012] In one embodiment, the suspended pneumatic hot air double-plate isolation door further includes a first joint. The first joint is installed on the frame and communicated with the chamber. External purging air can enter the chamber from the first joint.

[0013] In one embodiment, the suspended pneumatic hot air double-plate isolation door further includes a second joint. The second joint is installed on the frame and communicated with the accommodation chamber. External purging air can enter the accommodation chamber from the second joint.

[0014] In one embodiment, a first groove is provided in the frame at the opening, an asbestos rope is provided in the first groove, a second groove is provided in the door panel assembly, and the asbestos rope is provided in the second groove.

[0015] In one embodiment, the frame at the opening is provided with a first groove, a wire is arranged in the first groove, the door panel assembly is provided with a second groove, and a graphite packing is arranged in the second groove.

[0016] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0017] By using the suspended pneumatic hot air double-plate isolation door of the present utility model, the accommodation cavity of the suspended pneumatic hot air double-plate isolation door is used to accommodate the door panel assembly, the chamber is used to accommodate the suspension assembly, the suspension assembly is connected to the door panel assembly and is used to suspend the door panel assembly on the frame, the power assembly is installed on the frame and is connected to the door panel assembly, the power assembly drives the door panel assembly to move, and the door panel assembly drives the suspension assembly to move in the chamber so that the door panel assembly closes the opening. Since the suspension assembly is arranged on the frame to suspend the door panel assembly, no walking guide rail is provided at the bottom of the frame, and there is no obstruction in the bottom space of the frame, so that the generated dust will be carried away by the hot air flow, and the situation of dust accumulation jamming the door panel assembly will not occur. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Wherein:

[0020] Figure 1 It is the front view of the suspended pneumatic hot air double-plate isolation door in one embodiment.

[0021] Figure 2 For Figure 1 It is the partial enlarged schematic view of part A of the suspended pneumatic hot air double-plate isolation door shown.

[0022] Figure 3 For Figure 1 It is the top view of the suspended pneumatic hot air double-plate isolation door shown.

[0023] Figure 4 For Figure 3 It is the partial enlarged schematic view of part B of the suspended pneumatic hot air double-plate isolation door shown.

[0024] Reference Signs:

[0025] 1. Frame; 11. Accommodation cavity; 12. Chamber; 13. Opening;

[0026] 2. Power assembly; 21. Power element; 22. Linking head; 23. Linking pin;

[0027] 3. Door panel assembly; 31. First door panel; 32. Second door panel;

[0028] 4. Suspension assembly; 41. Mounting bracket; 42. Roller; 43. Guide rail;

[0029] 5. Locking assembly; 51. Connecting shaft; 52. Connecting piece; 53. First connecting rod; 54. Second connecting rod. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0033] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0034] It should be noted that the features in the embodiments of the present utility model can be combined with each other without conflict.

[0035] Please refer to Figures 1 to 4 for an illustration of the suspended pneumatic hot air double-plate isolation door provided by the present utility model.

[0036] The hanging pneumatic hot air double-plate isolation door includes a frame 1, a power assembly 2, a door panel assembly 3 and a hanging assembly 4. The frame 1 is provided with a receiving cavity 11 and a chamber 12 that communicate with each other, and an opening 13 that penetrates the receiving cavity 11. The receiving cavity 11 is used to accommodate the door panel assembly 3, the chamber 12 is used to accommodate the hanging assembly 4, the hanging assembly 4 is connected to the door panel assembly 3 and is used to hang the door panel assembly 3 on the frame 1, and the power assembly 2 is installed on the frame 1 and is connected to the door panel assembly 3.

[0037] The power assembly 2 drives the door panel assembly 3 to move, and the door panel assembly 3 drives the hanging assembly 4 to move in the chamber 12 so that the door panel assembly 3 closes the opening 13. Specifically, since the opening 13 penetrates part of the receiving cavity 11, when the door panel assembly 3 moves in the receiving cavity 11, it will close the opening 13.

[0038] It can be understood that the receiving cavity 11 of the hanging pneumatic hot air double-plate isolation door is used to accommodate the door panel assembly 3, the chamber 12 is used to accommodate the hanging assembly 4, the hanging assembly 4 is connected to the door panel assembly 3 and is used to hang the door panel assembly 3 on the frame 1, the power assembly 2 is installed on the frame 1 and is connected to the door panel assembly 3. The power assembly 2 drives the door panel assembly 3 to move, and the door panel assembly 3 drives the hanging assembly 4 to move in the chamber 12 so that the door panel assembly 3 closes the opening 13. Since the hanging assembly 4 is provided on the frame 1 to hang the door panel assembly 3, no walking guide rail 43 is provided at the bottom of the frame 1, and there is no obstruction in the bottom space of the frame 1, so that the generated dust will be carried away by the hot air flow, and the situation of dust accumulation jamming the door panel assembly 3 will not occur.

[0039] In this embodiment, the hanging assembly 4 includes a mounting bracket 41, a roller 42 and a guide rail 43. The mounting bracket 41 is installed on the door panel assembly 3, the guide rail 43 is installed in the chamber 12, and the roller 42 is rotatably connected to the mounting bracket 41 and is in rolling connection with the guide rail 43. Specifically, the guide rail 43 extends along the direction of the chamber 12. During the process of the power assembly 2 driving the door panel assembly 3 to close the opening 13, the door panel assembly 3 drives the mounting bracket 41 and the roller 42 to move. The roller 42 is in rolling connection with the guide rail 43, so that the roller 42 can move along the guide rail 43, so that the hanging assembly 4 is arranged above the frame 1, without dust accumulation, the walking track is not restricted, and the opening and closing are smooth.

[0040] It should be added that the guide rail 43 is made of 40CrMo material treated by quenching and tempering, and the roller 42 is made of GCr15 material treated by quenching and tempering. Products of the above two materials can serve in a hot primary air environment with a temperature of 300 - 350 °C for a long time without performance degradation.

[0041] Further, two suspension components 4 are provided and symmetrically arranged on both sides of the door panel component 3. By providing two suspension components 4, the door panel component 3 can move more smoothly.

[0042] In an embodiment, as Figure 1 , Figure 3 and Figure 4 shown, the power component 2 includes a power element 21, a linkage head 22 and a linkage pin 23. The door panel component 3 includes a first door panel 31 and a second door panel 32. The power element 21 is connected to the linkage pin 23 through the linkage head 22. One end of the linkage pin 23 is inserted into one end of the first door panel 31, and the other end is inserted into one end of the second door panel 32. The power element 21 drives the linkage head 22 to move, the linkage head 22 drives the linkage pin 23 to move, and the linkage pin 23 drives the first door panel 31 and the second door panel 32 to move, so that the first door panel 31 and the second door panel 32 can close the opening 13. The power element 21 can be a cylinder. Since the first door panel 31 and the second door panel 32 are in a suspended state, the linkage pin 23 is connected at a position 300 mm above the center points of the first door panel 31 and the second door panel 32. In this way, when the power element 21 pushes and pulls the first door panel 31 and the second door panel 32, the first door panel 31 and the second door panel 32 can be in the best balance position.

[0043] The first door panel 31 and the second door panel 32 are made of alloy steel and then subjected to overall heat treatment to remove welding stress. The first door panel 31 and the second door panel 32 made of alloy steel material and subjected to overall heat treatment will never deform at a temperature not higher than 500 °C, saying goodbye to the problems that the hot air isolation doors of thermal power plants often cannot be closed tightly or other various sealing problems in the past, and completely solving the problems and hidden dangers of poor sealing and often incorrect opening and closing during the use of the hot air isolation doors of thermal power plants.

[0044] In this embodiment, the suspended pneumatic hot air double-plate isolation door further includes a locking component 5. The locking component 5 includes a connecting shaft 51, a connecting piece 52, a first connecting rod 53 and a second connecting rod 54. One end of the first connecting rod 53 is rotatably connected to the first door panel 31, and the other end is rotatably connected to the connecting piece 52. One end of the second connecting rod 54 is rotatably connected to the second door panel 32, and the other end is rotatably connected to the connecting piece 52. The connecting piece 52 is fixed on the connecting shaft 51.

[0045] During the process of the power assembly 2 driving the first door panel 31 and the second door panel 32 to close the opening 13, the first door panel 31 and the second door panel 32 drive the connecting shaft 51, the connecting member 52, the first connecting rod 53 and the second connecting rod 54 to move. When the connecting shaft 51 abuts against the frame 1, the connecting shaft 51 drives the connecting member 52 to drive the first connecting rod 53 and the second connecting rod 54 to swing. The first connecting rod 53 and the second connecting rod 54 respectively drive the first door panel 31 and the second door panel 32 to move away from each other, so that the first door panel 31 and the second door panel 32 respectively abut against the frame 1. In this way, the first door panel 31 and the second door panel 32 can be in close contact with the frame 1 respectively, thus playing a role of complete sealing.

[0046] Furthermore, two locking assemblies 5 are provided and symmetrically arranged at both ends of the first door panel 31 and the second door panel 32. By providing two locking assemblies 5, the sealing performance between the first door panel 31 and the second door panel 32 and the frame 1 can be improved.

[0047] In an embodiment, as Figure 1 shown, the suspended pneumatic hot air double-plate isolation door further includes a first joint, which is installed on the frame 1 and communicates with the chamber 12. The external purging air can enter the chamber 12 from the first joint. The ash contained in the hot air basically accumulates at the bottom of the frame 1. Therefore, it is very unlikely that ash accumulates on the upper track, especially coarse-grained ash. In order to ensure that no fine ash or coarse-grained ash accumulates on the upper part and affects the operation of the door panel assembly 3, a first joint is provided at the top of the frame 1 and communicates with the chamber 12. The external purging air enters the chamber 12 from the first joint, so as to remove the dust in the chamber 12. The purging air is taken from compressed air or clean cold air with a pressure 0.8 - 1 KPa higher than that in the hot air pipeline.

[0048] In this embodiment, the suspended pneumatic hot air double-plate isolation door further includes a second joint, which is installed on the frame 1 and communicates with the receiving chamber 11. The external purging air can enter the receiving chamber 11 from the second joint. If the door panel assembly 3 is in the open state, the ash carried by the medium in the pipeline will enter the receiving chamber 11. Therefore, a second joint is provided on the frame 1, and the second joint communicates with the receiving chamber 11, so that the external purging air can enter the receiving chamber 11 from the second joint, thereby removing the dust in the receiving chamber 11. The purging air is taken from compressed air or clean cold air with a pressure 0.8 - 1 KPa higher than that in the hot air pipeline.

[0049] In an embodiment, as Figure 1 shown, the frame 1 at the opening 13 is provided with a first groove, in which an asbestos rope is provided. The door panel assembly 3 is provided with a second groove, in which an asbestos rope is provided. After the door panel assembly 3 closes the opening 13, the door panel assembly 3 contacts the frame 1. By providing the asbestos rope, a non-leaking hot air medium is formed between the contact of the door panel assembly 3 and the frame 1, thus ensuring the sealing performance.

[0050] In yet another embodiment, the frame 1 at the opening 13 is provided with a first groove, a wire is arranged in the first groove, the door panel assembly 3 is provided with a second groove, and a graphite packing is arranged in the second groove. After the door panel assembly 3 closes the opening 13, the door panel assembly 3 contacts the frame 1. By arranging the wire and the graphite packing, a hot air medium leakage-free is formed between the contact of the door panel assembly 3 and the frame 1, thereby ensuring the sealing performance.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0052] The foregoing disclosure is only the preferred embodiments of the present invention, and of course, it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A suspended pneumatic hot air double-plate isolation door, characterized in that The hanging pneumatic hot air double-plate isolation door includes a frame, a power assembly, a door panel assembly, and a hanging assembly. The frame is provided with a communicating receiving cavity and a chamber, and an opening penetrating through the receiving cavity. The receiving cavity is used to accommodate the door panel assembly, and the chamber is used to accommodate the hanging assembly. The hanging assembly is connected to the door panel assembly and is used to hang the door panel assembly on the frame. The power assembly is installed on the frame and is connected to the door panel assembly; The power assembly drives the door panel assembly to move, and the door panel assembly drives the hanging assembly to move in the chamber, so that the door panel assembly closes the opening.

2. The hanging pneumatic hot air double-plate isolation door according to claim 1, characterized in that, The hanging assembly includes a mounting bracket, a roller, and a guide rail. The mounting bracket is installed on the door panel assembly, the guide rail is installed in the chamber, and the roller is rotatably connected to the mounting bracket and is in rolling connection with the guide rail.

3. The hanging pneumatic hot air double-plate isolation door according to claim 2, wherein, There are two hanging assemblies, which are symmetrically arranged on both sides of the door panel assembly.

4. The hanging pneumatic hot air double-plate isolation door according to claim 1, characterized in that, The power assembly includes a power element, a linkage head, and a linkage pin. The door panel assembly includes a first door panel and a second door panel. The power element is connected to the linkage pin through the linkage head. One end of the linkage pin is inserted into one end of the first door panel, and the other end is inserted into one end of the second door panel.

5. The hanging pneumatic hot air double-plate isolation door according to claim 4, characterized in that, The hanging pneumatic hot air double-plate isolation door further includes a locking assembly. The locking assembly includes a connecting shaft, a connecting piece, a first connecting rod, and a second connecting rod. One end of the first connecting rod is rotatably connected to the first door panel, and the other end is rotatably connected to the connecting piece. One end of the second connecting rod is rotatably connected to the second door panel, and the other end is rotatably connected to the connecting piece. The connecting piece is fixed on the connecting shaft; During the process that the power assembly drives the first door panel and the second door panel to close the opening, the first door panel and the second door panel drive the connecting shaft, the connecting piece, the first connecting rod, and the second connecting rod to move. When the connecting shaft abuts against the frame, the connecting shaft drives the connecting piece to drive the first connecting rod and the second connecting rod to swing. The first connecting rod and the second connecting rod respectively drive the first door panel and the second door panel to move away from each other, so that the first door panel and the second door panel respectively abut against the frame.

6. The hanging pneumatic hot air double-plate isolation door according to claim 5, wherein, There are two locking assemblies, which are symmetrically arranged at both ends of the first door panel and the second door panel.

7. The hanging pneumatic hot air double-plate isolation door according to claim 1, characterized in that, The hanging pneumatic hot air double-plate isolation door further includes a first joint. The first joint is installed on the frame and is communicated with the chamber. External purging air can enter the chamber from the first joint.

8. The hanging pneumatic hot air double-plate isolation door according to claim 1, characterized in that, The hanging pneumatic hot air double-plate isolation door further includes a second joint. The second joint is installed on the frame and is communicated with the receiving cavity. External purging air can enter the receiving cavity from the second joint.

9. The hanging pneumatic hot air double-plate isolation door according to claim 1, characterized in that, At the opening, the frame is provided with a first groove, and asbestos rope is arranged in the first groove. The door panel assembly is provided with a second groove, and the asbestos rope is arranged in the second groove.

10. The suspended pneumatic hot air double-plate isolation door according to claim 1, wherein, The frame at the opening is provided with a first groove, a wire is arranged in the first groove, the door panel assembly is provided with a second groove, and a graphite composite packing is arranged in the second groove.

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