Fresh air silencing pipeline

Abstract

The utility model discloses a fresh air noise reduction pipeline, relates to the technical field of pipelines, and aims to solve the problem that the connection between an air supply pipe and a noise reduction hose is easy to loosen to cause noise, and adopts the technical scheme that the fresh air noise reduction pipeline comprises the noise reduction hose and the air supply pipe detachably connected to the noise reduction hose, and a positioning ring is connected to the inner wall of the noise reduction hose in a sliding manner; an air bag is fixedly connected to the side, close to the air supply pipe, of the positioning ring and attached to the air supply pipe, a plurality of clamping assemblies used for clamping the air supply pipe are arranged on the outer wall of the silencing hose, and a plurality of control assemblies used for controlling expansion of the air bag are arranged on the inner wall of the silencing hose. According to the fresh air silencing pipeline, through the arrangement of the air bag and the clamping assembly, it can be guaranteed that air leakage does not occur at the joint of the air supply pipeline and the silencing hose, noise is avoided, the silencing hose is made of polyformaldehyde materials, high strength and abrasion resistance are achieved, and it can be guaranteed that the silencing hose can be used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, and more particularly to a fresh air silencer pipeline. Background Art

[0002] Fresh air refers to the air outside the building or that has not been circulated by the air conditioning and ventilation system. In order to deliver fresh air into the building, a fresh air unit will be used. When the fresh air unit delivers fresh air, it generally uses a fan to draw in outside air, and then transports it through various pipes to the fresh air fans in each room for discharge. The fresh air fan and the air supply pipe are generally connected with a silencer hose to reduce the noise generated during air supply.

[0003] The existing silencer hose can reduce noise through the isolation layer and sound-absorbing layer set inside it. However, since the air supply pipe and the silencer hose are connected only by bolts and nuts, the connection is prone to loosening after a period of use. When the connection is loose and fresh air continues to be transported, some of the fresh air will be blown out from the gap between the two, causing noise.

[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a fresh air silencer duct, which can ensure that there is no air leakage at the connection between the air supply pipe and the silencer hose through the arrangement of air bags and clamping components, thereby avoiding noise.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a fresh air silencer duct comprises a silencer hose and an air supply pipe detachably connected to the silencer hose, a positioning ring is slidably connected to the inner wall of the silencer hose, an airbag is fixedly connected to the side of the positioning ring close to the air supply pipe, the airbag is fitted with the air supply pipe, a plurality of clamping components for clamping the air supply pipe are provided on the outer wall of the silencer hose, and a plurality of control components for controlling the expansion of the airbag are provided on the inner wall of the silencer hose.

[0007] The utility model is further configured as follows: the clamping assembly includes a sleeve fixedly connected to the outer wall of the silencer hose, a positioning rod slidably connected to the sleeve, and a clamping block fixedly connected to the positioning rod; the inner bottom side of the sleeve is connected to the positioning rod by a spring; and a plurality of grooves for the clamping blocks to be placed are provided on the air supply pipe.

[0008] The utility model is further configured as follows: the control component includes an air cylinder fixedly connected to the inner wall of the silencer hose, a piston rod slidably connected to the air cylinder, and an air pipe fixedly connected to the air cylinder; the air pipe is fixedly connected to the airbag; and the air cylinder, the air pipe and the airbag are interconnected.

[0009] The utility model is further configured as follows: a second spring is fixedly connected between the inner bottom side of the air cylinder and the piston rod.

[0010] The utility model is further configured as follows: a fixing ring is fixedly connected to the inner wall of the positioning ring, an air guide pipe is fixedly connected to the side of the fixing ring away from the air supply pipe, and the air guide pipe has elastic deformation capability.

[0011] The utility model is further configured such that: the clamping block is arranged at an angle away from the side of the silencer hose.

[0012] The utility model is further configured as follows: a plurality of sliders are slidably connected to the outer wall of the silencer hose, a plurality of sliders are fixedly connected to connecting rings, and a side of the connecting ring close to the clamping block is arc-shaped.

[0013] The utility model is further configured as follows: the middle section of the trachea is spirally configured.

[0014] To sum up, the utility model has the following beneficial effects: it can ensure that there is no air leakage at the connection between the air supply pipe and the silencer hose under the premise of simple disassembly and assembly, thereby avoiding noise, and the silencer hose is made of polyformaldehyde material, which has high strength and wear resistance, and can ensure that the silencer hose can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a cross-sectional view of the utility model Figure 1 ;

[0017] Figure 3 This is a cross-sectional view of the utility model Figure 2 ;

[0018] Figure 4 This is a cross-sectional view of the utility model Figure 3 ;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0020] Figure 6 This is a cross-sectional view of the utility model Figure 4 .

[0021] In the figure: 1. Silencer hose; 2. Air supply pipe; 3. Positioning ring; 4. Air bag; 5. Sleeve; 6. Positioning rod; 7. Block; 8. Spring 1; 9. Groove; 10. Air cylinder; 11. Piston rod; 12. Air pipe; 13. Spring 2; 14. Fixing ring; 15. Air guide pipe; 16. Slider; 17. Connecting ring. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0023] A fresh air silencer duct, such as Figures 1-6 As shown, it includes a silencer hose 1 and an air supply pipe 2 detachably connected to the silencer hose 1. The silencer hose 1 is made of polyformaldehyde material, which has high strength and wear resistance, and can ensure that the silencer hose 1 can be used for a long time. A positioning ring 3 is slidably connected to the inner wall of the silencer hose 1, and an airbag 4 is fixedly connected to the side of the positioning ring 3 close to the air supply pipe 2. The airbag 4 fits with the air supply pipe 2. A number of clamping components for clamping the air supply pipe 2 are provided on the outer wall of the silencer hose 1, and a number of control components for controlling the expansion of the airbag 4 are provided on the inner wall of the silencer hose 1. During installation, the air supply pipe 2 can be fixed to the silencer hose 1 through the clamping component, and when fixed, the control component will be triggered to expand the airbag 4, thereby sealing the gap between the silencer hose 1 and the air supply pipe 2, thereby preventing air leakage at the connection between the silencer hose 1 and the air supply pipe 2, which causes noise.

[0024] like Figure 1-Figure 5 When the clamping block 7 is pulled out, the positioning rod 6 will move away from the bottom side of the sleeve 5, and the spring 18 will be stretched. After the clamping blocks 7 are pulled out, the air supply pipe 2 is inserted into the silencer hose 1. When inserting, the clamping block 7 needs to be aligned with the groove 9. When the clamping block 7 is sunk into the groove 9, the positioning rod 6 will be close to the bottom side of the sleeve 5, and the spring 18 will be reset for a period of time, but the spring 18 is not completely reset at this time. When the clamping block 7 is sunk into the groove 9 and the spring 18 is in a stretched state, the clamping block 7 will be clamped in the groove 9, so that the silencer hose 1 and the air supply pipe 2 can be clamped and fixed.

[0025] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 As shown, the control component includes an air cylinder 10 fixedly connected to the inner wall of the silencer hose 1, a piston rod 11 slidably connected to the air cylinder 10, and an air pipe 12 fixedly connected to the air cylinder 10. The air pipe 12 is fixedly connected to the airbag 4, and the air cylinder 10, the air pipe 12 and the airbag 4 are interconnected. When the air supply pipe 2 is inserted into the silencer hose 1, the air supply pipe 2 will first contact the positioning ring 3 and the airbag 4, and then continue to be inserted into the air supply pipe 2. The piston rod 11 moves toward the bottom side of the air cylinder 10 and sends the gas in the air cylinder 10 along the air pipe 12 into the airbag 4, so as to control the expansion of the airbag 4, and when the block 7 is stuck in the groove 9, the expanded airbag 4 can block the gap between the silencer hose 1 and the air supply pipe 2, thereby improving the sealing.

[0026] like Figure 6 As shown, a spring 2 13 is fixedly connected between the inner bottom side of the air cylinder 10 and the piston rod 11. When the piston rod 11 moves toward the bottom side of the air cylinder 10, the spring 2 13 is in a compressed state. When the silencer hose 1 and the air supply pipe 2 are separated for maintenance, the spring 2 13 will reset, causing the piston rod 11 to move toward the bottom side of the air cylinder 10 and extract the gas in the airbag 4, so that the airbag 4 can be contracted to its minimum state for the next docking.

[0027] like Figure 2 As shown, a fixing ring 14 is fixedly connected to the inner wall of the positioning ring 3, and an air guide pipe 15 is fixedly connected to the side of the fixing ring 14 away from the air supply pipe 2. The air guide pipe 15 has elastic deformation ability. When the air supply pipe 2 is installed, the positioning ring 3 will drive the fixing ring 14 and the air guide pipe 15 to move together. At this time, the air guide pipe 15 starts to deform from the contracted state of contacting the silencer hose 1. When the air supply pipe 2 is in a fixed state, the air guide pipe 15 no longer contacts the inner wall of the silencer hose 1 and becomes a normal state. When the air supply pipe 2 sends fresh air into the room, due to the existence of the air guide pipe 15, the fresh air sent in can be directly sent into the room without contacting components such as the air cylinder 10, thereby avoiding the fresh air blowing through the gaps between the components and making noise.

[0028] like Figure 2-Figure 5 As shown, the block 7 is tilted away from the side of the silencer hose 1. When the air supply pipe 2 is inserted, the air supply pipe 2 will first contact the inclined surface of the block 7. After contacting the inclined surface, the air supply pipe 2 is continued to be pushed, which can make the positioning rod 6 away from the bottom side of the sleeve 5. In this way, the step of pulling out the block 7 can be avoided for quick installation.

[0029] like Figure 2-Figure 4 As shown, a number of sliders 16 are slidably connected to the outer wall of the silencer hose 1, and a connecting ring 17 is fixedly connected to the sliders 16. The connecting ring 17 is arc-shaped on the side close to the block 7. When the silencer hose 1 and the air supply pipe 2 need to be separated for maintenance, the surface of the connecting ring 17 can be pressed so that the arc surface of the connecting ring 17 contacts the inclined surface of the block 7. At this time, continue to press the surface of the connecting ring 17, and the block 7 will be squeezed out of the groove 9 of the air supply pipe 2, so that it can be quickly unlocked and easily removed.

[0030] like Figure 2-Figure 6 As shown, the middle section of the air pipe 12 is spirally arranged to prevent the air pipe 12 from affecting the operation of other components when the positioning ring 3 moves.

[0031] Working principle: During installation, first align the air supply pipe 2 with the groove 9 and insert it into the silencer hose 1. When inserting the air supply pipe 2, the air supply pipe 2 will first contact the inclined surface of the block 7. After contacting the inclined surface, continue to push the air supply pipe 2, which can make the block 7 and the positioning rod 6 away from the bottom side of the sleeve 5. At this time, the spring 1 8 is stretched, and then the air supply pipe 2 can be continued to be inserted into the silencer hose 1, so that the block 7 is sunk into the groove 9. When the block 7 is sunk into the groove 9, the positioning rod 6 is close to the bottom side of the sleeve 5, and the spring 1 8 is reset for a while, but at this time the spring 1 8 is not completely reset. When the block 7 is sunk into the groove 9 and the spring 1 When the block 8 is in the stretched state, the clamping block 7 will be clamped in the groove 9, and the silencer hose 1 and the air supply pipe 2 will be clamped and fixed. When the air supply pipe 2 is inserted into the silencer hose 1, the air supply pipe 2 will first contact the positioning ring 3 and the air bag 4, and then continue to be inserted into the air supply pipe 2. The piston rod 11 will approach the bottom side of the air cylinder 10 and send the gas in the air cylinder 10 into the air bag 4 along the trachea 12 to expand the air bag 4. When the clamping block 7 is trapped in the groove 9, the air bag 4 expands and blocks the gap between the silencer hose 1 and the air supply pipe 2, thereby preventing air leakage at the connection between the silencer hose 1 and the air supply pipe 2, which causes noise.

[0032] When separating the silencer hose 1 and the air supply pipe 2 for maintenance, the surface of the connecting ring 17 can be pressed so that the arc surface of the connecting ring 17 contacts the inclined surface of the block 7. At this time, continue to press the surface of the connecting ring 17, and the block 7 will be squeezed out of the groove 9 of the air supply pipe 2, and then the silencer hose 1 and the air supply pipe 2 can be separated.

[0033] In this way, under the premise of simple disassembly and assembly, it can be ensured that there is no air leakage at the connection between the air supply pipe 2 and the silencer hose 1, thereby avoiding noise. The silencer hose 1 is made of polyformaldehyde material, which has high strength and wear resistance, and can ensure that the silencer hose 1 can be used for a long time.

[0034] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A fresh air silencer duct, comprising a silencer hose (1) and an air supply pipe (2) detachably connected to the silencer hose (1), characterized in that: A positioning ring (3) is slidably connected to the inner wall of the silencer hose (1); an air bag (4) is fixedly connected to the side of the positioning ring (3) close to the air supply pipe (2); the air bag (4) fits the air supply pipe (2); a plurality of clamping components for clamping the air supply pipe (2) are provided on the outer wall of the silencer hose (1); and a plurality of control components for controlling the expansion of the air bag (4) are provided on the inner wall of the silencer hose (1).

2. The fresh air silencing duct according to claim 1, characterized in that: The clamping assembly comprises a sleeve (5) fixedly connected to the outer wall of the silencer hose (1), a positioning rod (6) slidably connected to the sleeve (5), and a clamping block (7) fixedly connected to the positioning rod (6); the inner bottom side of the sleeve (5) and the positioning rod (6) are connected via a spring (8); and a plurality of grooves (9) for the clamping blocks (7) to be placed are provided on the air supply pipe (2).

3. The fresh air silencing duct according to claim 2, characterized in that: The control assembly comprises an air cylinder (10) fixedly connected to the inner wall of the silencer hose (1), a piston rod (11) slidably connected to the air cylinder (10), and an air pipe (12) fixedly connected to the air cylinder (10); the air pipe (12) is fixedly connected to the air bag (4); and the air cylinder (10), the air pipe (12) and the air bag (4) are in communication with each other.

4. The fresh air silencing duct according to claim 3, characterized in that: A second spring (13) is fixedly connected between the inner bottom side of the air cylinder (10) and the piston rod (11).

5. The fresh air silencing duct according to claim 4, characterized in that: A fixing ring (14) is fixedly connected to the inner wall of the positioning ring (3); an air guide pipe (15) is fixedly connected to the side of the fixing ring (14) away from the air supply pipe (2); and the air guide pipe (15) has elastic deformation capability.

6. The fresh air silencing duct according to claim 2, characterized in that: The clamping block (7) is arranged at an angle away from the side of the muffler hose (1).

7. The fresh air silencing duct according to claim 6, characterized in that: A plurality of sliders (16) are slidably connected to the outer wall of the muffler hose (1), and a connecting ring (17) is fixedly connected to the plurality of sliders (16). The connecting ring (17) is arc-shaped on a side close to the clamping block (7).

8. The fresh air silencing duct according to claim 3, characterized in that: The middle section of the trachea (12) is arranged in a spiral shape.

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