A wind back damper stack assembly

Abstract

This utility model belongs to the technical field of heat exchange devices and relates to an anti-backdraft exhaust pipe assembly, which includes: an exhaust pipe and an anti-backdraft mechanism disposed within the exhaust pipe; the anti-backdraft mechanism includes a backdraft stop seat, a first backdraft stop plate, a second backdraft stop plate, and a backdraft stop pin. The backdraft stop seat is spot-welded to a predetermined position within the exhaust pipe, and the outer wall of the backdraft stop seat is in contact with the inner wall of the exhaust pipe; the backdraft stop seat has exhaust holes; the first and second backdraft stop plates are respectively movably mounted on the backdraft stop pin; the backdraft stop pin is connected to the backdraft stop seat; the first and second backdraft stop plates cooperate with the corresponding exhaust holes. The advantages of this structure are: simple structure, smooth flow of flue gas, avoidance of backflow, reduction of flue gas and air crossflow, and improvement of heat transfer efficiency of the secondary heat exchange device.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange devices, specifically, it relates to an anti-backdraft exhaust pipe assembly. Background Technology

[0002] As a crucial component of flue gas treatment equipment, the anti-backflow exhaust duct plays a particularly important role. It prevents flue gas from flowing back, allowing for more effective flue gas treatment, reducing air pollutant emissions, and thus achieving environmental protection goals.

[0003] Traditional backdraft prevention and smoke extraction systems often have ineffective backdraft deflectors that don't close properly, resulting in poor smoke extraction performance. Therefore, improvements are necessary. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides an anti-backdraft exhaust pipe assembly, which has a simple structure, good sealing performance, and strong practicality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] As one aspect of this utility model, a backdraft prevention exhaust pipe assembly is proposed, which includes: an exhaust pipe and an backdraft prevention mechanism disposed within the exhaust pipe;

[0007] The anti-backdraft mechanism includes a backdraft stop seat, a first backdraft stop plate, a second backdraft stop plate, and a backdraft stop pin. The backdraft stop seat is connected to a preset position inside the exhaust pipe, and the outer wall of the backdraft stop seat is in contact with the inner wall of the exhaust pipe. The backdraft stop seat has an exhaust hole. The first and second backdraft stop plates are respectively movably mounted on the backdraft stop pin. The backdraft stop pin is connected to the backdraft stop seat. The first and second backdraft stop plates cooperate with the corresponding exhaust holes.

[0008] Alternatively, the number of smoke exhaust vents is two, and the two smoke exhaust vents are symmetrically arranged around the center of the backwind stop seat.

[0009] Optionally, the first and second backwind stop plates are respectively formed with mating bosses that are adapted to the corresponding smoke exhaust holes.

[0010] Optionally, the exhaust pipe's outlet end is rolled inward to form a curled section.

[0011] Optionally, the side of the backwind stop seat is formed with a mounting boss for mounting the backwind stop pin, and the two ends of the backwind stop pin are respectively connected to the corresponding mounting boss.

[0012] Optionally, the first backwind stop plate includes a first stop plate body, one end of which is formed with at least one first bushing rotatably connected to the backwind stop pin, and a mating boss is formed on the first stop plate body.

[0013] Optionally, the second backwind stop plate includes a second stop plate body, one end of which is formed with at least one second bushing that is rotatably connected to the backwind stop pin, and a mating boss is formed on the second stop plate body; the first bushing and the second bushing are spaced apart on the backwind stop pin.

[0014] The beneficial effects of this utility model's anti-backdraft exhaust pipe assembly are specifically reflected in the following aspects: its simple structure allows for smooth flow of flue gas, avoids reverse flow, reduces cross-flow between flue gas and air, and improves the heat transfer efficiency of the secondary heat exchange device; it can both ensure production safety and improve production efficiency. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] Figure 1 This is a schematic diagram of the anti-backdraft smoke exhaust pipe assembly of this utility model;

[0017] Figure 2 This is a structural cross-sectional view of the anti-backdraft smoke exhaust pipe assembly of this utility model;

[0018] Figure 3 This is an exploded schematic diagram of the anti-backdraft smoke exhaust pipe assembly of this utility model;

[0019] Figure 4 This is an explosion diagram of the anti-backdraft mechanism of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] One embodiment of this application provides an anti-backdraft smoke exhaust pipe assembly, such as... Figures 1-4 As shown, it includes: a smoke exhaust pipe 1 and an anti-backdraft mechanism 2 installed in the smoke exhaust pipe 1;

[0022] The exhaust pipe 1 is rolled inward at the air outlet end to form a curled part 11, which removes burrs and facilitates the installation of the anti-backdraft mechanism 2 inside the exhaust pipe 1.

[0023] The anti-backdraft mechanism 2 includes a backdraft stop seat 21, a first backdraft stop plate 22, a second backdraft stop plate 23, and a backdraft stop pin 24. The backdraft stop seat 21 is spot-welded to a predetermined position inside the exhaust pipe 1, and the outer wall of the backdraft stop seat 21 is in contact with the inner wall of the exhaust pipe 1. The backdraft stop seat 21 has two exhaust holes 211, symmetrically arranged around the center of the backdraft stop seat 21. The first backdraft stop plate 22 and the second backdraft stop plate 23 are respectively movably mounted on the backdraft stop pin 24. The backdraft stop pin 24 is connected to the backdraft stop seat 21. The first backwind stop plate 22 and the second backwind stop plate 23 are fitted with corresponding smoke exhaust holes 211. The first backwind stop plate 22 and the second backwind stop plate 23 are respectively formed with mating bosses 25 that are adapted to the corresponding smoke exhaust holes 211. When the smoke is discharged normally, the first backwind stop plate 22 and the second backwind stop plate 23 open outward with the backwind stop pin 24 as the axis to exhaust smoke. When there is no smoke discharge, the first backwind stop plate 22 and the second backwind stop plate 23 are adapted to the corresponding smoke exhaust holes 211 under their own weight to achieve the function of preventing backwind.

[0024] Furthermore, such as Figure 4 As shown, in this embodiment, the side of the backwind stop seat 21 is formed with a mounting boss 212 for mounting the backwind stop pin 24, and the two ends of the backwind stop pin 24 are respectively connected to the corresponding mounting boss 212.

[0025] Furthermore, in this embodiment, as Figure 4 As shown, the first backwind stop plate 22 includes a first stop plate body 221. At least one first bushing 222 is formed at one end of the first stop plate body 221, which is rotatably connected to the backwind stop pin 24. A mating boss 25 is formed on the first stop plate body 221.

[0026] Furthermore, in this embodiment, as Figure 4 As shown, the second backwind stop plate 23 includes a second stop plate body 231. At least one second bushing 232 is formed at one end of the second stop plate body 231 and is rotatably connected to the backwind stop pin 24. A mating boss 25 is formed on the second stop plate body 231. The first bushing 222 and the second bushing 232 are spaced apart on the backwind stop pin 24.

[0027] In summary, the beneficial effects of the anti-backdraft exhaust pipe assembly of this application are: simple structure, smooth flow of flue gas, avoidance of reverse flow, reduction of crossflow between flue gas and air, and improvement of heat transfer efficiency of the secondary heat exchange device; it can both ensure production safety and improve production efficiency.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0034] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A wind backdraft preventing smoke vent pipe assembly, characterized by, It includes: Smoke exhaust pipe and backdraft prevention mechanism installed inside the smoke exhaust pipe; The anti-backdraft mechanism includes a backdraft stop seat, a first backdraft stop plate, a second backdraft stop plate, and a backdraft stop pin. The backdraft stop seat is connected to a preset position inside the exhaust pipe, and the outer wall of the backdraft stop seat is in contact with the inner wall of the exhaust pipe. The backdraft stop seat has an exhaust hole. The first and second backdraft stop plates are respectively movably mounted on the backdraft stop pin. The backdraft stop pin is connected to the backdraft stop seat. The first and second backdraft stop plates cooperate with the corresponding exhaust holes.

2. The reverse air damper chimney assembly of claim 1, wherein, There are two smoke exhaust holes, which are symmetrically arranged around the center of the backwind stop seat.

3. The reverse-air damper vented smoke pipe assembly of claim 1, wherein, The first and second backwind stop plates each have a mating boss that matches the corresponding smoke exhaust hole.

4. The reverse-air damper vented smoke pipe assembly of claim 1, wherein, The exhaust pipe's outlet end is rolled inward to form a curled section.

5. The reverse-puffing smoke venting duct assembly of claim 1, wherein, The side of the backwind stop seat has a mounting boss for mounting the backwind stop pin, and both ends of the backwind stop pin are connected to the corresponding mounting boss.

6. The draft hood smoke vent assembly of claim 1, wherein, The first backwind stop plate includes a first stop plate body, one end of which is formed with at least one first bushing that is rotatably connected to the backwind stop pin, and a mating boss is formed on the first stop plate body.

7. A draught hood smoke vent assembly as claimed in claim 6, wherein, The second backwind stop plate includes a second stop plate body, one end of which is formed with at least one second bushing that is rotatably connected to the backwind stop pin, and a mating boss is formed on the second stop plate body; the first bushing and the second bushing are spaced apart on the backwind stop pin.

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