Anti-backflow building ventilating duct structure

Abstract

The utility model discloses an anti-backflow building ventilating duct structure, and relates to the technical field of building ventilating ducts. Comprising a first pipe body, a second pipe body is arranged at one end of the first pipe body, a sealing connecting assembly is arranged between the first pipe body and the second pipe body and comprises a sealing groove formed in the connecting end of the first pipe body, a sealing protruding pipe is fixed to the connecting end of the second pipe body, and the sealing protruding pipe is inserted into the sealing groove in a matched mode. Sealing rings are arranged between the overall connecting end face of the second pipe body and the sealing protruding pipe and the connecting end face of the first pipe body. Through the arrangement of the sealing connecting assembly, a sealing ring, a sealing groove and a sealing protruding pipe guarantee certain sealing performance of contact between the first pipe body and the second pipe body, the L-shaped locking plate is driven by the lantern ring and the rotating sleeve to stretch and rotate till the buckle makes contact with the locking block, and fixing is reinforced through the magnetic attraction block; sealing of the first pipe body and the second pipe body is guaranteed, meanwhile, dismounting and mounting are convenient, and operation is more convenient and faster.

Description

TECHNICAL FIELD

[0001] The utility model relates to building ventilation pipeline technical field, concretely is a building ventilation pipeline structure of anti -backflow. BACKGROUND

[0002] Building ventilation pipeline refers to the pipeline system for air circulation, exhaust or fresh air introduction in the building, they are important components of building ventilation system, ensure air quality, temperature and humidity adjustment, provide good indoor environment, and existing ventilation pipeline usually uses check fan and check valve to ensure that air does not backflow.

[0003] The existing building ventilation pipeline with sound insulation structure (authorized announcement number: CN221592020U) has the following defects: the above-mentioned ventilation pipeline sets up sound attenuation pipeline and shock absorption support frame to effectively reduce the noise generated by the pipeline and the shock absorption effect, and the connection between the pipe bodies in the existing anti-backflow building ventilation pipeline is usually installed and connected through flanges, which is relatively cumbersome and inconvenient, resulting in complex dismounting and mounting operation, therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a building ventilation pipeline structure to solve the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a building ventilation pipeline structure is provided, which comprises a first pipe body, a second pipe body is arranged at one end of the first pipe body, a sealing connection assembly is arranged between the first pipe body and the second pipe body, the sealing connection assembly comprises a sealing groove formed in the first pipe body connection end, a sealing convex pipe is fixed to the second pipe body connection end, the sealing convex pipe is inserted into the sealing groove, a sealing ring is arranged between the overall connection end face of the second pipe body and the sealing convex pipe and the first pipe body connection end face, a fixing ring is fixedly sleeved at one end of the first pipe body, a rotating sleeve is rotatably sleeved on the second pipe body, a limiting ring groove is symmetrically formed in the inner wall of the rotating sleeve, and a limiting convex ring is fixedly sleeved on the outer wall of the second pipe body and is matched with the limiting ring groove.

[0006] Preferably, a plurality of fixed plates are fixedly arranged on the outer wall of the rotating sleeve, a positioning rod is slidably inserted into the fixed plate, and a sleeve ring is arranged on one side of the rotating sleeve.

[0007] Preferably, the sleeve ring is slidably sleeved on the outer wall of the second pipe body, a plurality of connecting plates are fixedly arranged on the outer wall of the sleeve ring, one end of the positioning rod is fixed to the connecting plate at the corresponding position, a spring is sleeved on the outer side of the positioning rod, and one end of the spring is connected to the fixed plate.

[0008] Preferably, the other end of the spring is connected to the connecting plate, the outer wall of the sleeve ring is fixed with a handle block, the connecting plate is fixed with an L-shaped locking plate, the outer wall of the fixed ring is fixed with a plurality of locking blocks, the locking blocks are matched with the L-shaped locking plate and are matched and connected with magnetic attraction blocks.

[0009] Preferably, one side of the first pipe body is provided with a backflow prevention fan, the other side is provided with a mute filtering assembly, the second pipe body is provided with a check valve, and the mute filtering assembly comprises a positioning ring block fixedly arranged on the inner wall of the first pipe body.

[0010] Preferably, the positioning ring block is placed with sound-absorbing cotton, the sound-absorbing cotton is arranged as a pipe body, the sound-absorbing cotton is placed with an activated carbon block at one end, the activated carbon block is provided with a mounting ring block at the outer end, the mounting ring block is fixedly provided with a mounting magnetic attraction arch plate on the outer side, and the mounting magnetic attraction arch plate is provided with a magnetic attraction block between the inner wall of the first pipe body.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The anti-backflow building ventilation pipeline structure is provided with the sealing connection assembly, the sealing ring, the sealing groove and the sealing convex pipe ensure the certain sealing performance of the contact between the first pipe body and the second pipe body, the L-shaped locking plate is stretched and rotated to the buckle contact locking block under the driving of the sleeve ring and the rotating sleeve, and the magnetic attraction block is used for strengthening the fixation, so that the first pipe body and the second pipe body are sealed, and the dismounting and mounting are convenient, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is a sectional view of the utility model;

[0015] Figure 3 It is a three-dimensional split structure schematic view of the utility model;

[0016] Figure 4 It is a three-dimensional split structure schematic view of the utility model; Figure 3 It is an enlarged structure schematic view of part A.

[0017] In the drawing: 1, first pipe body; 101, sealing groove; 102, backflow prevention fan; 2, second pipe body; 201, sealing convex pipe; 202, check valve; 3, rotating sleeve; 301, limiting convex ring; 302, fixed plate; 303, positioning rod; 304, spring; 305, sleeve ring; 306, connecting plate; 307, L-shaped locking plate; 308, fixed ring; 309, locking block; 310, handle block; 4, positioning ring block; 401, sound-absorbing cotton; 402, activated carbon block; 403, mounting ring block; 404, mounting magnetic attraction arch plate. PREFERRED EMBODIMENT

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the process of building ventilation and exhaust operations, backflow prevention building ventilation ducts are required. The duct structure provided by this utility model is specifically designed to facilitate the installation and disassembly of the first duct body 1 and the second duct body 2 while ensuring backflow prevention. Before using this structure, preparatory work such as inspection is required to ensure its normal use.

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a building ventilation duct structure for preventing backflow, including a first pipe body 1, a second pipe body 2 at one end of the first pipe body 1, a sealing connection assembly between the first pipe body 1 and the second pipe body 2, the sealing connection assembly including a sealing groove 101 opened at the connecting end of the first pipe body 1, a sealing protrusion 201 fixed at the connecting end of the second pipe body 2, the sealing protrusion 201 being adapted to be inserted into the sealing groove 101, a sealing ring being provided between the integral connecting end face of the second pipe body 2 and the sealing protrusion 201 and the connecting end face of the first pipe body 1, a fixing ring 308 being sleeved and fixed at one end of the first pipe body 1, a rotating sleeve 3 being rotatably sleeved on the second pipe body 2, a limiting ring groove being symmetrically opened on the inner wall of the rotating sleeve 3, and a limiting protrusion 301 adapted to the limiting ring groove being symmetrically fixedly sleeved on the outer wall of the second pipe body 2.

[0021] In this embodiment, a plurality of fixing plates 302 are fixed around the outer wall of the rotating sleeve 3. A positioning rod 303 is slidably inserted on the fixing plate 302. A collar 305 is provided on one side of the rotating sleeve 3. The collar 305 is adapted to be slidably sleeved on the outer wall of the second tube 2. A plurality of connecting plates 306 are fixed around the outer wall of the collar 305. One end of the positioning rod 303 is fixed on the connecting plate 306 at the corresponding position. A spring 304 is adapted to be provided on the outside of the positioning rod 303. One end of the spring 304 is connected to the fixing plate 302. The sealing ring is a prior art.

[0022] In the embodiment, the other end of the spring 304 is connected to the connecting plate 306, the outer wall of the sleeve ring 305 is fixed with the handle block 310, the connecting plate 306 is fixed with the L-shaped locking plate 307, the outer wall of the fixed ring 308 is circumferentially fixed with a plurality of locking blocks 309, the locking blocks 309 are adapted with the L-shaped locking plate 307 and are adapted to be connected with the magnetic attraction blocks, through the sealing connection assembly, the sealing ring, the sealing groove 101 and the sealing convex pipe 201 ensure a certain sealing performance of the contact between the first pipe body 1 and the second pipe body 2, the L-shaped locking plate 307 is stretched and rotated to buckle the contact locking blocks 309 under the driving of the sleeve ring 305 and the rotating sleeve pipe 3 as a whole, and is fixed through the magnetic attraction blocks, so that the first pipe body 1 and the second pipe body 2 are sealed while being convenient to disassemble and install, and the operation is more convenient.

[0023] In the embodiment, the inside of the first pipe body 1 is provided with a check fan 102 on one side and a mute filtering assembly on the other side, and the inside of the second pipe body 2 is provided with a check valve 202, the mute filtering assembly comprises a positioning ring block 4 fixed to the inner wall of the first pipe body 1, the positioning ring block 4 is placed with sound-absorbing cotton 401 on one side, the sound-absorbing cotton 401 is provided as a pipe body, the sound-absorbing cotton 401 is placed with an activated carbon block 402 at one end, the activated carbon block 402 is provided with a mounting ring block 403 at the outer end, the mounting ring block 403 is fixed with a mounting magnetic attraction arch plate 404 on the outer side, and the mounting magnetic attraction arch plate 404 is provided with a magnetic attraction block between the inner wall of the first pipe body 1, wherein the mounting ring block 403 is convenient to take out and install, and ensures the installation operation of the sound-absorbing cotton 401 and the activated carbon block 402, the check fan 102, the check valve 202, the activated carbon block 402, the sound-absorbing cotton 401 and the magnetic attraction block are prior art.

[0024] Working principle: when the pipeline structure is used, the check fan 102 and the check valve 202 ensure that the wind body in the pipeline does not appear reverse flow, when the first pipe body 1 and the second pipe body 2 are installed, the sealing convex pipe 201 is installed into the sealing groove 101 to be preliminarily positioned, then the handle block 310 is held and rotated to ensure that the L-shaped locking plate 307 is dislocated with the locking block 309, the handle block 310 is pulled to make the L-shaped locking plate 307 close to the locking block 309 and then rotated, the L-shaped locking plate 307 is buckled on the locking block 309, and the magnetic attraction blocks correspond, at this time the spring 304 is in a stretched state, and the sealing effect is ensured.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the attached embodiments and its equivalents.

Claims

1. A backflow prevention building ventilation duct structure, comprising a first duct body (1), characterized in that: A second tube (2) is provided at one end of the first tube (1). A sealing connection assembly is provided between the first tube (1) and the second tube (2). The sealing connection assembly includes a sealing groove (101) opened at the connection end of the first tube (1). A sealing protrusion (201) is fixed at the connection end of the second tube (2). The sealing protrusion (201) is adapted to be inserted into the sealing groove (101). A sealing ring is provided between the overall connection end face of the second tube (2) and the sealing protrusion (201) and the connection end face of the first tube (1). A fixing ring (308) is sleeved and fixed at one end of the first tube (1). A rotating sleeve (3) is rotatably sleeved on the second tube (2). A limiting ring groove is symmetrically opened on the inner wall of the rotating sleeve (3). A limiting protrusion (301) adapted to the limiting ring groove is symmetrically fixed on the outer wall of the second tube (2).

2. The anti-backflow building ventilation duct structure according to claim 1, characterized in that: The outer circumference of the rotating sleeve (3) is fixed with multiple fixing plates (302), and a positioning rod (303) is slidably inserted on the fixing plate (302). A collar (305) is provided on one side of the rotating sleeve (3).

3. The anti-backflow building ventilation duct structure according to claim 2, characterized in that: The collar (305) is adapted to slide and be sleeved on the outer wall of the second tube (2). Multiple connecting plates (306) are fixed around the outer wall of the collar (305). One end of the positioning rod (303) is fixed on the corresponding connecting plate (306). A spring (304) is adapted to be provided on the outside of the positioning rod (303). One end of the spring (304) is connected to the fixing plate (302).

4. The anti-backflow building ventilation duct structure according to claim 3, characterized in that: The other end of the spring (304) is connected to the connecting plate (306). A handle block (310) is fixed on the outer wall of the collar (305). An L-shaped locking plate (307) is fixed on the connecting plate (306). Multiple locking blocks (309) are fixed on the circumference of the outer wall of the fixing ring (308). The locking block (309) is adapted to the L-shaped locking plate (307) and is connected to a magnetic block.

5. The anti-backflow building ventilation duct structure according to claim 1, characterized in that: The first pipe body (1) has a backflow preventer (102) on one side and a silent filter assembly on the other side. The second pipe body (2) has a check valve (202) inside. The silent filter assembly includes a positioning ring block (4) fixed to the inner wall of the first pipe body (1).

6. The anti-backflow building ventilation duct structure according to claim 5, characterized in that: A sound-absorbing cotton (401) is placed on one side of the positioning ring block (4). The sound-absorbing cotton (401) is set as a tube body. An activated carbon block (402) is placed at one end of the sound-absorbing cotton (401). An installation ring block (403) is set at the outer end of the activated carbon block (402). An installation magnetic arch plate (404) is fixed on the outer side of the installation ring block (403). A magnetic block is set between the installation magnetic arch plate (404) and the inner wall of the first tube body (1).

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