A double panel door

Abstract

The utility model discloses a double plugboard door, including the casing, be provided with the front plugboard and rear plugboard in the casing, the front plugboard with rear plugboard is connected through the linkage pin, the linkage pin is connected with the drive arrangement of setting in the casing end portion, be provided with at least a group locking device between the front plugboard with rear plugboard, be provided with the apron on the casing, be provided with the sealed hole on the casing. The utility model locking device makes the front plugboard and rear plugboard compress in the casing, has realized mechanical seal, the sealed hole is used for going into sealed air, and the sealed air is gone into in the cavity, can form sealed air isolation layer between the front plugboard and rear plugboard, mechanical seal plus air seal realizes the effect of good blocking the through of flue gas, avoids the problem of flue gas leakage in the use process.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a double-panel door. Background Technology

[0002] Single-slot gates rely solely on a single slide gate and sealing seat for sealing, resulting in a limited sealing contact area. Even slight deformation of the slide gate or sealing seat can easily create gaps. Furthermore, most single-slot gates, without a complex locking mechanism, struggle to achieve an ideal seal. Even with such a mechanism, wear on the drive components over time can lead to incomplete locking of the slide gate, causing leaks. Additionally, the constant friction between the slide gate and the sealing surface during opening and closing gradually wears down the sealing surface, compromising the integrity of the seal. Single-slot gates are commonly used in pipelines transporting high-temperature flue gas, corrosive media, or those containing ash and slag. High temperatures cause deformation between the slide gate and the sealing element due to their different coefficients of thermal expansion, creating sealing gaps. Corrosive media erode the materials of both the sealing element and the slide gate, leading to aging of the sealing element and damage to the slide gate surface. Ash and other impurities easily embed themselves in the sealing gaps, hindering a tight fit between the slide gate and the sealing seat and scratching the sealing surface during slide gate movement, further exacerbating leakage problems.

[0003] For pipelines transporting flue gas containing pollutants, a single-slot valve leak can lead to the direct release of pollutants into the environment. This damages the ecological environment and may also violate environmental regulations, subjecting companies to hefty penalties. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a double-panel door that employs both mechanical and air seals to effectively block the passage of smoke and prevent smoke leakage during use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a double-panel door, comprising a housing, wherein a front panel and a rear panel are disposed within the housing, and the front panel and the rear panel are connected by a linkage pin; the linkage pin is connected to a driving device disposed at the end of the housing; at least one locking device is disposed between the front panel and the rear panel; a cover plate is disposed on the housing, and a sealing hole is disposed on the housing.

[0006] As a preferred technical solution of this utility model: the housing includes a valve seat and a slide plate cavity; the driving device includes a cylinder, and the cylinder rod of the cylinder enters the slide plate cavity through a connecting flange; the end of the cylinder rod is connected to the linkage pin through a connector.

[0007] As a preferred technical solution of this utility model: a cooling air inlet is provided on the connecting flange.

[0008] As a preferred technical solution of this utility model: the cylinder is mounted on the outside of the insert plate cavity via a cylinder frame; a limit rod is provided on the cylinder rod, and a limit switch that cooperates with the limit rod is provided on the cylinder frame, and the limit switch is electrically connected to the cylinder.

[0009] As a preferred technical solution of this utility model: the locking device includes a locking lever, and folding cranks are provided at both ends of the locking lever. The folding cranks are used to connect the front insert plate and the rear insert plate; a fixing rod that cooperates with the locking lever is provided on the housing.

[0010] As a preferred technical solution of this utility model: the locking lever includes a first locking rod and a second locking rod, and the first locking rod and the second locking rod are connected by an elastic element.

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

[0012] The locking device presses the front and rear insert plates tightly into the housing, achieving a mechanical seal. The sealing hole is used to introduce sealing air. When sealing air is introduced into the cavity, a sealing air isolation layer is formed between the front and rear insert plates. The mechanical seal combined with the air seal effectively blocks the passage of flue gas, preventing flue gas leakage during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0015] Figure 3 This is a left view of the overall structure of this utility model;

[0016] Figure 4 for Figure 3 Enlarged view of the internal structure;

[0017] Figures 1-4 In the middle section, 1. Housing; 2. Front insert plate; 3. Rear insert plate; 4. Linkage pin; 5. Locking device; 6. Drive device; 7. Cover plate; 8. Sealing hole; 9. Insert plate cavity; 10. Valve seat; 11. Cylinder; 12. Connecting flange; 13. Connector; 14. Cylinder frame; 15. Locking lever; 16. Folding crank; 17. Fixing rod; 18. First locking rod; 19. Second locking rod; 20. Elastic element; 21. Limit rod; 22. Limit block; 23. Limit switch; 24. First limit switch; 25. Second limit switch; 26. Cooling air inlet; 27. Maintenance manhole; 28. Cylinder rod. Detailed Implementation

[0018] To make the objectives and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] like Figures 1-4 As shown, this embodiment of the utility model provides a double-panel door, including a housing 1. A front panel 2 and a rear panel 3 are disposed within the housing 1, connected by a linkage pin 4. This linkage ensures synchronized opening and closing, achieving integrated operation. At least one locking device 5 is provided between the front panel 2 and the rear panel 3; the locking device 5 presses the front panel 2 and the rear panel 3 tightly within the housing 1, achieving a mechanical seal. The linkage pin 4 is connected to a drive device 6 located at the end of the housing 1. A cover plate 7 is provided on the housing 1, forming a sealed cavity. A sealing hole 8 is provided on the housing 1, allowing sealing air to pass through. The introduction of sealing air into the cavity creates a sealed air isolation layer between the front panel 2 and the rear panel 3. The mechanical seal combined with the air seal effectively blocks the passage of smoke and gas.

[0020] The housing 1 includes a slide plate cavity 9 and a valve seat 10. The drive device 6 includes a cylinder 11, the cylinder rod 28 of which enters the slide plate cavity 9 through a connecting flange 12; the end of the cylinder rod 28 is connected to the linkage pin 4 through a connector 13. The cylinder 11 is mounted on the outside of the slide plate cavity 9 via a cylinder bracket 14; in this embodiment, two sets are preferred. The locking device 5 includes a locking lever 15, with folding cranks 16 at both ends of the locking lever 15, the folding cranks 16 being used to connect the front slide plate 2 and the rear slide plate 3; a fixing rod 17 cooperating with the locking lever 15 is provided on the housing 1. When cylinder 11 receives a closing command, it controls cylinder rod 28 to move the front insert plate 2 and rear insert plate 3 towards valve seat 10 within housing 1. Once the front insert plate 2 and rear insert plate 3 are closed, locking lever 15 presses against fixed rod 17. Cylinder rod 28 then pushes linkage pin 4, causing locking lever 15 to open folding crank 16, pressing the front insert plate 2 and rear insert plate 3 against the valve seat 10, thus achieving a good mechanical seal. Locking lever 15 includes a first locking rod 18 and a second locking rod 19, connected by elastic element 20. The elastic element 20 buffers the impact force of locking lever 15 pressing against fixed rod 17, improving the service life of the equipment.

[0021] To prevent damage to the equipment due to excessive movement of the cylinder rod 28, a limit rod 21 is provided on the cylinder rod 28, and a limit block 22 is provided on the limit rod 21. A limit switch 23 that cooperates with the limit block 22 is provided on the cylinder frame 14. The limit switch 23 is electrically connected to the cylinder 11. In this embodiment, two sets of limit switches 23 are provided, namely a first limit switch 24 closer to the housing 1 and a second limit switch 25 farther away from the housing 1. When the limit rod 21 moves with the cylinder rod 28, when the limit block 22 touches the first limit switch 24, it indicates that the locking device 5 has pressed the front insert plate 2 and the rear insert plate 3. At this time, the first limit switch 24 stops the cylinder 11 through the control device. When the limit block 22 touches the second limit switch 25, it indicates that the front insert plate 2 and the rear insert plate 3 are fully opened. At this time, the second limit switch 25 stops the cylinder 11 through the control device. To prevent the cylinder rod 28 from being damaged by the high-temperature flue gas, a cooling air inlet 26 is provided on the connecting flange 12. For convenient maintenance, a maintenance manhole 27 is provided on the slide plate cavity 9.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A double-panel door, characterized in that: The device includes a housing (1), a front insert plate (2) and a rear insert plate (3) are provided inside the housing (1), the front insert plate (2) and the rear insert plate (3) are connected by a linkage pin (4); the linkage pin (4) is connected to a drive device (6) provided at the end of the housing (1); at least one locking device (5) is provided between the front insert plate (2) and the rear insert plate (3); a cover plate (7) is provided on the housing (1), and a sealing hole (8) is provided on the housing (1).

2. A double-panel door according to claim 1, characterized in that: The housing (1) includes a valve seat (10) and a slide plate cavity (9); the drive device (6) includes a cylinder (11), and the cylinder rod (28) of the cylinder (11) enters the slide plate cavity (9) through a connecting flange (12); the end of the cylinder rod (28) is connected to the linkage pin (4) through a connector (13).

3. A double-panel door according to claim 2, characterized in that: A cooling air inlet (26) is provided on the connecting flange (12).

4. A double-panel door according to claim 2, characterized in that: The cylinder (11) is mounted on the outside of the insert cavity (9) via a cylinder frame (14); a limit rod (21) is provided on the cylinder rod (28), and a limit switch (23) that cooperates with the limit rod (21) is provided on the cylinder frame (14), and the limit switch (23) is electrically connected to the cylinder (11).

5. A double-panel door according to any one of claims 1-4, characterized in that: The locking device (5) includes a locking lever (15), and folding cranks (16) are provided at both ends of the locking lever (15). The folding cranks (16) are used to connect the front insert plate (2) and the rear insert plate (3). A fixing rod (17) that cooperates with the locking lever (15) is provided on the housing (1).

6. A double-panel door according to claim 5, characterized in that: The locking lever (15) includes a first locking rod (18) and a second locking rod (19), which are connected by an elastic element (20).

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