A flow-guiding exhaust fireproof valve convenient to disassemble and assemble

Abstract

The utility model discloses a kind of flow-guiding exhaust fire damper convenient to dismount, including a valve body, at least one of the import and export of the valve body is connected with a telescopic joint, the displacement of the valve body and pipeline quick dismounting is realized through the joint simultaneously, the displacement of the displacement of pipeline due to thermal expansion and contraction or installation error can be effectively compensated.This utility model realizes the quick dismounting of valve body and pipeline, reduces installation difficulty and cost, improves installation efficiency, and the displacement of the displacement of pipeline due to thermal expansion and contraction or installation error can be effectively compensated through telescopic joint, avoids interface deformation due to stress effect, improves the reliability and service life of fire damper.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a flow-guiding and exhaust fireproof valve that is easy to disassemble and assemble. Background Technology

[0002] A fire damper is an automatic valve installed in the ducts of ventilation and air conditioning systems. When the temperature inside the duct reaches a preset threshold or a fire occurs, the valve automatically closes, cutting off the airflow channel and preventing flames and high-temperature smoke from spreading to other areas through the duct.

[0003] Currently, most fire damper bodies on the market are connected to pipes using a fixed interface design, which has the following drawbacks:

[0004] 1) The installation of the pipeline requires high precision. If there is a deviation between the actual installation position of the pipeline and the preset interface position of the fire damper, it may lead to installation difficulties, or even require readjustment of the pipeline layout or secondary processing of the fire damper interface. This not only increases the installation cost and time, but may also affect the sealing performance and normal operation of the fire damper due to non-standard operation during the installation process.

[0005] 2) During use, due to factors such as building settlement and thermal expansion and contraction of pipelines, fire dampers with fixed interfaces are prone to stress. After long-term use, problems such as interface deformation may occur, which will affect the reliability and service life of the fire damper.

[0006] Therefore, it is necessary to design a flow-guiding and exhaust fire damper that is easy to disassemble and assemble, so as to effectively solve the above-mentioned technical problems. Utility Model Content

[0007] In order to solve the problems existing in the prior art, this utility model aims to provide a flow-guiding and exhaust fire damper that is easy to disassemble and assemble. Through the telescopic interface design, it can realize quick and convenient disassembly and assembly operations while effectively buffering stress.

[0008] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0009] A flow-guiding and exhaust fireproof valve that is easy to assemble and disassemble includes a valve body, at least one of the inlet and outlet of the valve body is connected to a retractable joint, which enables quick assembly and disassembly of the valve body from the pipeline, while effectively compensating for displacement of the pipeline caused by thermal expansion and contraction or installation errors.

[0010] Furthermore, the joint includes inner and outer sleeves that coincide in axial center, the front end of the inner sleeve is slidably inserted inside the outer sleeve, and a sealing ring is provided between the inner and outer sleeves and the connecting section.

[0011] Furthermore, the rear end of the outer sleeve is provided with a pair of limiting plates that can limit the movement of the inner sleeve.

[0012] Furthermore, flanges are provided at the front and rear ends of the outer sleeve and at the rear end of the inner sleeve, respectively.

[0013] Furthermore, the inner hole of the outer sleeve is a stepped hole, which includes a first stepped hole and a second stepped hole, wherein the diameter of the second stepped hole is larger than the diameter of the first stepped hole.

[0014] Furthermore, the outer surface of the inner sleeve is stepped, comprising a first stepped segment and a second stepped segment, wherein the outer diameter of the second stepped segment is smaller than the outer diameter of the first stepped segment.

[0015] Furthermore, a groove for installing the sealing ring is provided on the outer surface of the first stepped section.

[0016] Furthermore, at least one set of blind holes are provided on the stepped surfaces of the first and second stepped holes; the front end face of the first stepped segment is provided with a pin corresponding to each of the blind holes, and the pin can slide through the corresponding blind hole.

[0017] Furthermore, the outer surface of the pin is provided with an venting groove that extends through its end face along the axial direction.

[0018] The beneficial effects of this utility model are as follows: By setting retractable joints at the inlet and outlet of the valve body, this utility model realizes the quick assembly and disassembly of the valve body and the pipeline, reduces the installation difficulty and cost, and improves the installation efficiency. At the same time, the retractable joints can effectively compensate for the displacement of the pipeline caused by thermal expansion and contraction or installation errors, avoid interface deformation caused by stress, and improve the reliability and service life of the fire damper.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the fire damper of this utility model;

[0022] Figure 2This is a schematic diagram of the connector structure of this utility model;

[0023] Figure 3 This is an exploded view of the connector of this utility model;

[0024] Figure 4 This is a cross-sectional view of the connector of this utility model;

[0025] Figure 5 This is an exploded sectional view of the connector of this utility model.

[0026] The following are the labels in the diagram: 1. Valve body; 2. Connector; 21. Inner sleeve; 22. Outer sleeve; 23. Sealing ring; 24. Limiting plate; 25. Flange; 211. First step; 212. Second step; 213. Pin; 221. First step hole; 222. Second step hole; 223. Blind hole; 2111. Groove. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] See Figure 1 As shown, a flow-guiding and exhaust fire damper that is easy to assemble and disassemble includes a valve body 1. A retractable connector 2 is connected to the outlet of the valve body 1. The connector 2 is not limited to being connected to the outlet of the valve body 1, but can also be connected to the inlet of the valve body 1, or a connector 2 can be connected to both the inlet and outlet of the valve body 1. The specific configuration can be set according to actual needs. In use, the valve body 1 can be quickly assembled and disassembled from the pipeline by the extension and retraction of the connector 2, while effectively compensating for the displacement of the pipeline caused by thermal expansion and contraction or installation errors.

[0030] Further, see Figure 2-5As shown, the connector 2 includes inner and outer sleeves 21 and 22 with their axial centers overlapping. The front end of the inner sleeve 21 is slidably inserted into the outer sleeve 22, and a sealing ring 23 is provided between the connecting sections of the inner and outer sleeves 21 and 22 to prevent flue gas from overflowing outward through the gap between the connecting sections of the inner and outer sleeves 21 and 22. A pair of limiting plates 24 are provided at the rear end of the outer sleeve 22 to limit the inner sleeve 21. The limiting plates 24 prevent the inner sleeve 21 from sliding into the outer sleeve 22 and limit the distance at which the inner sleeve 21 slides outward from the outer sleeve 22.

[0031] For further details, please refer to [link / reference]. Figure 2-3 As shown, flanges 25 are respectively provided at the front and rear ends of the outer sleeve 22 and the rear end of the inner sleeve 21; the flange 25 at the front end of the outer sleeve 22 enables the joint 2 and the valve body 1 to be detachably connected by corresponding locking bolts; the flange 25 at the rear end of the inner sleeve 21 enables the joint 2 and the pipeline to be detachably connected by corresponding locking bolts; and the flange 25 at the rear end of the outer sleeve 22 enables the outer sleeve 22 and a pair of limiting plates 24 to be detachably connected by corresponding locking bolts; wherein, in this embodiment, the flanges 25 provided on the outer sleeve 22 and the inner sleeve 21 are integrally formed with them to improve their connection strength.

[0032] Further, see Figure 4-5 As shown, the inner hole of the outer sleeve 22 is a stepped hole, which includes a first stepped hole 221 and a second stepped hole 222. The diameter of the second stepped hole 222 is larger than the diameter of the first stepped hole 221. The outer surface of the inner sleeve 21 is stepped, including a first stepped segment 211 and a second stepped segment 212. The outer diameter of the second stepped segment 212 is smaller than the outer diameter of the first stepped segment 211. In this embodiment, the first stepped segment 211 is slidably inserted into the second stepped hole 222, thereby realizing the front of the inner sleeve 21... The inner sleeve 21 is slidably inserted inside the outer sleeve 22. When sliding, the front end face of the inner sleeve 21 abuts against the stepped surfaces of the first stepped hole 221 and the second stepped hole 222 of the inner hole of the outer sleeve 22, thereby limiting the maximum sliding position of the inner sleeve 21 into the outer sleeve 22. The stepped surfaces of the first stepped segment 211 and the second stepped segment 212 of the inner sleeve 21 abut against a pair of limiting plates 24, thereby limiting the distance of the inner sleeve 21 sliding outward from the outer sleeve 22.

[0033] For further details, please refer to [link / reference]. Figure 3-5As shown, a groove 2111 for installing the sealing ring 23 is provided on the outer surface of the first stepped section 211. The sealing ring 23 can move synchronously with the inner sleeve 21 when the inner sleeve 21 slides inside the outer sleeve 22.

[0034] For further details, please refer to [link / reference]. Figure 3-5 As shown, eight sets of blind holes 223 are provided on the stepped surfaces of the first stepped hole 221 and the second stepped hole 222, but not limited to eight sets; other numbers can also be provided. The front end face of the first stepped section 211 is provided with a pin 213 corresponding to each of the blind holes 223. The pin 213 can slide through the corresponding blind hole 223. Through the cooperation of the pin 213 and the blind hole 223, the sliding of the inner sleeve 21 and the outer sleeve 22 is guided, while avoiding relative rotation between the inner sleeve 21 and the outer sleeve 22. In this embodiment, an venting groove (not shown in the figure) is provided on the outer surface of the pin 213 along the axial direction. The venting groove ensures that the pin 213 can slide smoothly in the blind hole 223.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flow-guiding and exhaust fire damper that is easy to disassemble and assemble, comprising a valve body (1), characterized in that: At least one of the inlet and outlet of the valve body (1) is connected to a retractable connector (2). The connector (2) enables the valve body (1) to be quickly disassembled and assembled with the pipeline, while effectively compensating for the displacement of the pipeline caused by thermal expansion and contraction or installation errors.

2. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 1, characterized in that: The connector (2) includes inner and outer sleeves (21, 22) with their axial centers overlapping. The front end of the inner sleeve (21) is slidably inserted into the outer sleeve (22), and a sealing ring (23) is provided between the connecting sections of the inner and outer sleeves (21, 22).

3. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 2, characterized in that: The outer sleeve (22) is provided with a pair of limiting plates (24) at its rear end, which can limit the inner sleeve (21).

4. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 2, characterized in that: Flanges (25) are provided at the front and rear ends of the outer sleeve (22) and the rear end of the inner sleeve (21).

5. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 2, characterized in that: The inner hole of the outer tube (22) is a stepped hole, which includes a first stepped hole (221) and a second stepped hole (222). The diameter of the second stepped hole (222) is larger than the diameter of the first stepped hole (221).

6. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 5, characterized in that: The outer surface of the inner sleeve (21) is stepped, including a first stepped section (211) and a second stepped section (212), the outer diameter of the second stepped section (212) being smaller than the outer diameter of the first stepped section (211).

7. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 6, characterized in that: The outer surface of the first stepped section (211) is provided with a groove (2111) for installing the sealing ring (23).

8. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 6, characterized in that: At least one set of blind holes (223) are provided on the stepped surfaces of the first stepped hole (221) and the second stepped hole (222); the front end face of the first stepped segment (211) is provided with a pin (213) corresponding to the blind hole (223) one by one, and the pin (213) can slide through the corresponding blind hole (223).

9. The easily disassembled and assembled flow-guiding and exhaust fire damper according to claim 8, characterized in that: The outer surface of the pin (213) is provided with an exhaust groove along the axial direction.

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