PP air pipe flame-retardant detection port

Abstract

The utility model relates to a wind pipe detection port technical field, and disclose a kind of PP wind pipe flame-retardant detection port, including stainless steel pipe one and stainless steel pipe two, the one end of stainless steel pipe one and stainless steel pipe two is fixedly installed with flange, the outer wall top end and bottom end of stainless steel pipe one and stainless steel pipe two are respectively movably sleeved with stainless steel pipe sleeve one and stainless steel pipe sleeve two, this PP wind pipe flame-retardant detection port, can be conveniently rotated stainless steel pipe sleeve one and stainless steel pipe sleeve two, so that personnel can be observed by different angle through the protruding pipe to wind pipe, greatly improve the flexibility of observation position, further improve the observation detection efficiency, solve the two protruding block position fixed on the stainless steel pipe in prior art scheme, when stainless steel pipe is connected and fixed with wind pipe, personnel can only be observed and detected by the toughened glass on two protruding blocks from fixed angle to wind pipe, leading to lower observation flexibility, there is certain observation limitation problem.

Description

Technical Field

[0001] This utility model relates to the technical field of duct inspection ports, specifically a flame-retardant inspection port for PP ducts. Background Technology

[0002] Polypropylene (PP) ducts are an indispensable part of modern building ventilation systems. Due to their excellent corrosion resistance, lightweight yet high strength, and ease of processing and installation, they are widely used in various commercial and industrial buildings, residential buildings, and underground facilities. However, with the increasing awareness of fire safety, the requirements for the flame-retardant performance of PP ducts are becoming increasingly stringent. According to Chinese Patent Publication No. CN217385374U, a flame-retardant detection port for PP ducts is disclosed. This port features a highly efficient and comprehensive observation structure with two observation slots. Tempered glass is fixedly connected to the inner wall of the opening on one side of each observation slot. Compared to a single observation port design, this PP duct flame-retardant detection port offers higher and more comprehensive observation efficiency. However, in this design, the two protrusions on the stainless steel pipe are fixed in position. Once the stainless steel pipe is connected to the duct, personnel can only observe the duct through the tempered glass on the two protrusions from a fixed angle, resulting in low observation flexibility and limitations. Therefore, we propose a flame-retardant detection port for PP ducts. Utility Model Content

[0003] The purpose of this invention is to provide a flame-retardant detection port for PP air ducts, which solves the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant detection port for PP air ducts, comprising a stainless steel pipe one and a stainless steel pipe two, each with a flange fixedly installed at one end; a stainless steel sleeve one and a stainless steel sleeve two movably fitted onto the top and bottom ends of the outer walls of the stainless steel pipe one and stainless steel pipe two, respectively; the stainless steel sleeve one and stainless steel sleeve two are detachably connected by bolts; a protruding tube is provided connecting the top end of the stainless steel sleeve one and the bottom end of the stainless steel sleeve two, with tempered glass fixedly embedded in the protruding tube; a connecting arc plate is fixedly installed on the inner wall of the stainless steel sleeve one and stainless steel sleeve two; a connecting ring groove is provided on the outer wall of the stainless steel pipe one and stainless steel pipe two; the number of connecting arc plates on the stainless steel sleeve one and stainless steel sleeve two are two, and the two connecting arc plates are slidably connected to the connecting ring grooves on the stainless steel pipe one and stainless steel pipe two, respectively.

[0005] Preferably, a sealing ring is fixedly installed at the bottom of the inner wall of the connecting ring groove. The sealing ring is tightly fitted with the bottom of the connecting arc plate. By setting the sealing ring, the sealing performance between the connecting arc plate and the connecting ring groove can be increased, thereby ensuring the sealing performance between stainless steel sleeve one and stainless steel sleeve two and between stainless steel pipe one and stainless steel pipe two.

[0006] Preferably, the sealing ring is made of wear-resistant rubber.

[0007] Preferably, both the stainless steel sleeve one and the stainless steel sleeve two have support protrusions fixedly installed on their inner walls. The support protrusions are arranged between the stainless steel sleeve one and the stainless steel sleeve two. By setting the support protrusions, the stainless steel sleeve one and the stainless steel sleeve two can be supported, thereby improving the connection strength between the stainless steel sleeve one and the stainless steel sleeve two.

[0008] Preferably, both ends of the supporting protrusion are provided with bead grooves, in which rolling balls are embedded. The opposite ends of stainless steel tube one and stainless steel tube two are provided with rolling grooves, and the rolling balls are connected to the rolling grooves in a rolling manner. By setting the rolling balls and rolling grooves, the friction between the supporting protrusion and stainless steel tube one and stainless steel tube two can be reduced, and the flexibility of stainless steel tube sleeve one and stainless steel tube sleeve two when rotating can be improved.

[0009] Preferably, both the stainless steel pipe sleeve one and the stainless steel pipe sleeve two are fixedly installed with handles on their outer walls. By providing handles, it is convenient for personnel to operate the stainless steel pipe sleeve one and the stainless steel pipe sleeve two through the handles.

[0010] This invention provides a flame-retardant detection port for PP air ducts. This flame-retardant detection port for PP air ducts has the following advantages: (1) The flame retardant detection port of the PP air duct can easily rotate the stainless steel pipe sleeve one and the stainless steel pipe sleeve two, so that personnel can observe the air duct through the convex pipe from different angles, which greatly improves the flexibility of the observation position and further improves the observation and detection efficiency. It solves the problem that in the existing technical solution, the two protrusions on the stainless steel pipe are fixed in position. When the stainless steel pipe is connected and fixed to the air duct, personnel can only observe and detect the air duct from a fixed angle through the tempered glass on the two protrusions, resulting in low observation flexibility and certain observation limitations. (2) The flame retardant detection port of the PP air duct can support the stainless steel pipe one and stainless steel pipe two by setting support protrusions, thereby improving the connection strength between stainless steel pipe one and stainless steel pipe two. In addition, by setting ball bearings and grooves, the friction between the support protrusions and stainless steel pipe one and stainless steel pipe two can be reduced, thereby improving the flexibility of stainless steel pipe sleeve one and stainless steel pipe sleeve two when rotating. The structure is simple and the practicality is strong. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the present invention. Figure 3 This is a schematic diagram of the disassembled structure of this utility model; Figure 4 This utility model Figure 2 Enlarged structural diagram of section A in the middle; Figure 5 This utility model Figure 3 Enlarged structural diagram of section B.

[0012] In the diagram: 1. Stainless steel pipe one; 2. Stainless steel pipe two; 3. Flange; 4. Stainless steel pipe sleeve one; 5. Stainless steel pipe sleeve two; 6. Convex pipe; 7. Tempered glass; 8. Connecting arc plate; 9. Connecting ring groove; 10. Sealing ring; 11. Handle; 12. Supporting convex strip; 13. Ball bearing; 14. Ball groove; 15. Roller groove. Detailed Implementation

[0013] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0014] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1-5As shown, this utility model provides a technical solution: a flame-retardant detection port for PP air ducts, including a stainless steel pipe 1 and a stainless steel pipe 2. A flange 3 is fixedly installed at one end of both stainless steel pipe 1 and stainless steel pipe 2. Stainless steel pipe sleeve 4 and stainless steel pipe sleeve 5 are movably sleeved at the top and bottom of the outer walls of stainless steel pipe 1 and stainless steel pipe 2, respectively. Stainless steel pipe sleeve 4 and stainless steel pipe sleeve 2 are detachably connected by bolts. A protruding pipe 6 is provided connecting the top of stainless steel pipe sleeve 4 and the bottom of stainless steel pipe sleeve 2. Tempered glass 7 is fixedly embedded in the protruding pipe 6. A connecting arc plate 8 is fixedly installed on the inner wall of both stainless steel pipe sleeve 4 and stainless steel pipe sleeve 2. A connecting ring groove 9 is opened on the outer wall of both stainless steel pipe 1 and stainless steel pipe 2. There are two connecting arc plates 8 on both stainless steel pipe sleeve 4 and stainless steel pipe sleeve 2. The two connecting arc plates 8 are slidably connected to the connecting ring grooves 9 on stainless steel pipe 1 and stainless steel pipe 2, respectively.

[0017] Specifically, in the above technical solution, when using the flame-retardant inspection port for the PP duct, stainless steel sleeve 4 and stainless steel sleeve 5 are fitted between the outer walls of stainless steel pipe 1 and stainless steel pipe 2, so that the connecting arc plate 8 is inserted into the connecting ring groove 9. Then, stainless steel sleeve 4 and stainless steel sleeve 5 are connected and fixed with bolts, thereby completing the connection between stainless steel pipe 1 and stainless steel pipe 2. Then, the flange 3 at one end of stainless steel pipe 1 and stainless steel pipe 2 is connected and installed to the duct. When personnel need to observe and inspect through the tempered glass 7 on the raised strip, they can directly rotate stainless steel sleeve 4 and stainless steel sleeve 5 by rotating the handle 11. The observation can be completed by aligning either the protruding tube 6 on the stainless steel sleeve 4 or the stainless steel sleeve 5 with the person's eye. The above structure allows for easy rotation of the stainless steel sleeve 4 and the stainless steel sleeve 5, enabling personnel to observe the duct through the protruding tube 6 from different angles. This greatly improves the flexibility of the observation position and further enhances the efficiency of observation and inspection. It solves the problem in the existing technical solution where the two protrusions on the stainless steel pipe are fixed in position. When the stainless steel pipe is connected and fixed to the duct, personnel can only observe and inspect the duct through the tempered glass 7 on the two protrusions from a fixed angle, resulting in low observation flexibility and certain observation limitations.

[0018] Furthermore, a sealing ring 10 is fixedly installed at the bottom of the inner wall of the connecting ring groove 9, and the sealing ring 10 is tightly fitted with the bottom of the connecting arc plate 8; By setting a sealing ring 10, the sealing performance between the connecting arc plate 8 and the connecting ring groove 9 can be increased, thereby ensuring the sealing performance between the stainless steel pipe sleeve 1 4 and the stainless steel pipe sleeve 2 5 and the stainless steel pipe 1 1 and the stainless steel pipe 2 2.

[0019] Furthermore, the sealing ring 10 is made of wear-resistant rubber.

[0020] Furthermore, support protrusions 12 are fixedly installed on the inner walls of both stainless steel pipe sleeve 1 4 and stainless steel pipe sleeve 2 5, and the support protrusions 12 are located between stainless steel pipe 1 and stainless steel pipe 2. By setting the support protrusion 12, the stainless steel pipe 1 and stainless steel pipe 2 can be supported, thereby improving the connection strength between the stainless steel pipe 1 and stainless steel pipe 2.

[0021] Furthermore, both ends of the support convex strip 12 are provided with bead grooves 14, in which balls 13 are rolled and embedded. Stainless steel tube 1 and stainless steel tube 2 are provided with rolling grooves 15 at their opposite ends, and the balls 13 are rolled and connected to the rolling grooves 15. By setting the ball bearing 13 and the groove 15, the friction between the support protrusion 12 and the stainless steel tube 1 and stainless steel tube 2 can be reduced, and the flexibility of the stainless steel tube sleeve 4 and stainless steel tube sleeve 2 when rotating can be improved.

[0022] Furthermore, handles 11 are fixedly installed on the outer walls of both stainless steel pipe sleeve 4 and stainless steel pipe sleeve 5. The design incorporates a handle 11, which allows personnel to easily operate the stainless steel pipe sleeve 4 and the stainless steel pipe sleeve 5.

[0023] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A flame-retardant testing port for PP ductwork, comprising a stainless steel pipe one (1) and a stainless steel pipe two (2), wherein a flange (3) is fixedly installed at one end of both the stainless steel pipe one (1) and the stainless steel pipe two (2), characterized in that: Stainless steel tube 1 (1) and stainless steel tube 2 (2) are respectively movably fitted with stainless steel tube sleeve 1 (4) and stainless steel tube sleeve 2 (5) at the top and bottom of their outer walls. Stainless steel tube sleeve 1 (4) and stainless steel tube sleeve 2 (5) are detachably connected by bolts. A protruding tube (6) is provided connecting the top of stainless steel tube sleeve 1 (4) and the bottom of stainless steel tube sleeve 2 (5). Tempered glass (7) is fixedly embedded in the protruding tube (6). A connecting arc plate (8) is fixedly installed on the inner wall of stainless steel tube sleeve 1 (4) and stainless steel tube sleeve 2 (5). A connecting ring groove (9) is opened on the outer wall of stainless steel tube 1 (1) and stainless steel tube 2 (2). There are two connecting arc plates (8) on stainless steel tube sleeve 1 (4) and stainless steel tube sleeve 2 (5). The two connecting arc plates (8) are slidably connected to the connecting ring grooves (9) on stainless steel tube 1 (1) and stainless steel tube 2 (2).

2. The flame-retardant detection port for PP air ducts according to claim 1, characterized in that: A sealing ring (10) is fixedly installed at the bottom of the inner wall of the connecting ring groove (9), and the sealing ring (10) is tightly fitted to the bottom of the connecting arc plate (8).

3. The flame-retardant detection port for PP ducts according to claim 2, characterized in that: The sealing ring (10) is made of wear-resistant rubber.

4. The flame-retardant detection port for PP air ducts according to claim 1, characterized in that: Both the inner walls of the stainless steel sleeve one (4) and the stainless steel sleeve two (5) are fixedly equipped with support protrusions (12), and the support protrusions (12) are arranged between the stainless steel sleeve one (1) and the stainless steel sleeve two (2).

5. A flame-retardant detection port for PP ducts according to claim 4, characterized in that: Both ends of the support protrusion (12) are provided with bead grooves (14), and rolling balls (13) are rolled in the bead grooves (14). The opposite ends of the stainless steel tube one (1) and the stainless steel tube two (2) are provided with rolling grooves (15), and the rolling balls (13) are rolled in connection with the rolling grooves (15).

6. The flame-retardant detection port for PP ducts according to claim 1, characterized in that: Handles (11) are fixedly installed on the outer walls of both the stainless steel sleeve one (4) and the stainless steel sleeve two (5).

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