Low-noise flat corrugated pipe

Abstract

The utility model relates to the technical field of corrugated pipes, in particular to a low-noise flat corrugated pipe which comprises a pipe body and a central tangent line, a plurality of corrugated grooves are arranged on the surface of the pipe body in a surrounding mode, protruding portions are arranged on concave portions of the corrugated grooves in a surrounding mode, and a connector and an air blowing head are arranged at two ends of the pipe body respectively. A plurality of first matching grooves are formed in the surface of the connector in a surrounding mode, and second matching grooves are formed in the positions, located between every two adjacent first matching grooves, of the inner side of the connector. Compared with a round corrugated pipe, the flat corrugated pipe can be installed in a narrow space, the flat shape of the flat corrugated pipe facilitates laying and connection of pipelines in some specific layouts, the installation difficulty is reduced, the protruding parts are arranged, it is equivalent to that an additional vibration absorption structure is additionally arranged in the corrugated groove, and the vibration absorption effect is improved. And residual vibration energy after preliminary damping of the corrugated grooves can be absorbed and dissipated again, and noise is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bellows, specifically relates to a low voice flat bellows. BACKGROUND

[0002] The bellows is a tubular elastic sensitive element with special structure and performance. It is usually connected by foldable corrugated sheets in a specific direction, showing good expansion performance. The thin wall of the bellows makes it have high sensitivity.

[0003] The existing bellows has the following problems: first, the noise generated by impacting other objects is too large, and second, the bellows is prone to random rotation and shaking during use after installation. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above defects, and provides a low voice flat bellows.

[0005] The utility model aims at solving the above defects, and provides a low voice flat bellows.

[0006] Further, the pipe body is provided with a first channel communicated between two sides, and the first channel has an inner diameter of 28.2±0.5mm; the connecting head is provided with a second channel communicated with the first channel, and the second channel is penetrated to the surface of the connecting head away from the first channel, and the second channel has an inner diameter of 32.8±0.5mm; and the blowing head is provided with a third channel communicated with the first channel, and the third channel is penetrated to the surface of the blowing head away from the first channel, and the third channel has an inner diameter of 32.5±0.5mm.

[0007] Further, the pipe body is made of LDPE material, which is a high molecular polymer polymerized under high temperature and high pressure conditions by free radical polymerization mechanism, and contains many long and short branches on the molecular chain, and the arrangement between the molecular chains is relatively loose, which makes the LDPE have good flexibility, transparency and low temperature resistance and other properties.

[0008] Further, the interval between the two adjacent first fitting grooves is consistent, and the outer diameter of the first fitting groove is 34.8±0.5mm.

[0009] Further, the interval between the two adjacent second fitting grooves is consistent.

[0010] Further, the interval between the two adjacent corrugated grooves is consistent, the groove width of the corrugated groove is 2.2mm, and the interval between the two corrugated grooves is 2.5mm.

[0011] Further, the interval between the two adjacent protruding portions is consistent.

[0012] The beneficial effects of the utility model are as follows:

[0013] Compared with the circular corrugated pipe, the flat corrugated pipe can be installed in a narrow space, can better fit the structure shape, save space, the flat shape is convenient for pipeline laying and connection in some specific layout, the installation angle and position can be flexibly adjusted according to the actual space condition, the installation difficulty is reduced, the inner wall is relatively flat, the echo generated by the wave cavity in the use process of the dust collector is reduced, the protruding portion is arranged, which is equivalent to increasing the additional vibration absorption structure in the corrugated groove, the residual vibration energy after preliminary damping of the corrugated groove can be absorbed and dissipated again, and the noise is further reduced. The protruding portion can increase the local rigidity and strength of the pipe body, especially in the concave part of the corrugated groove, which helps to prevent local deformation or rupture of the pipe body under a larger pressure or tension, and improves the structural stability of the entire corrugated pipe. In the fluid flow process, the protruding portion can produce more complex disturbance to the fluid, further optimize the flow state of the fluid, and help to realize more accurate fluid control. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model low voice flat corrugated pipe;

[0015] Figure 2 It is the utility model Figure 1 A partial sectional view;

[0016] Figure 3 It is the utility model Figure 1 B partial sectional view.

[0017] In the drawing, 1, pipe body;2, center tangent;3, corrugated groove;4, protruding portion;5, connecting head;6, blowing head;7, first fitting groove;8, second fitting groove;9, first channel;10, second channel;11, third channel. DETAILED DESCRIPTION

[0018] For the convenience of those skilled in the art to understand, the following will be further described with the embodiments and the drawings, the content mentioned in the embodiments is not a limitation of the utility model. The utility model will be described in detail below in combination with the drawings.

[0019] Please refer to Figures 1-3 , a low voice flat corrugated pipe, comprising a pipe body 1 and a center tangent line 2, the length of the pipe body 1 is 780±15mm, the pipe body 1 is flat, the distance between the surface of the pipe body 1 and the first channel 9 is 3.5mm, the surface of the pipe body 1 is circumferentially provided with a plurality of corrugated grooves 3, and the two ends of the corrugated groove 3 are mutually symmetrical with the center tangent line 2 as the center. The design of the corrugated groove makes the pipe body 1 have better stretchability and bending performance, can absorb the displacement and deformation of the pipeline caused by thermal expansion and contraction, equipment vibration and other reasons to a certain extent, protect the pipeline system from excessive stress damage. It can play a buffering role like a spring, absorb and disperse the vibration energy generated by the fluid flow in the pipeline, thereby effectively reducing the propagation of noise and making the pipeline system run more quietly. The corrugated structure improves the overall strength and pressure resistance of the pipe body 1 without increasing too much material, so that it can withstand certain internal pressure and external load, prolong the service life. The disturbance of the fluid in the pipe increases the contact area and turbulence degree of the fluid and the pipe wall, which is beneficial to improve the heat transfer efficiency.

[0020] The inner concave part of the corrugated groove 3 is circumferentially provided with a protruding part 4, the two ends of the protruding part 4 are mutually symmetrical with the center tangent line 2 as the center, and the spacing between adjacent two protruding parts 4 is consistent.

[0021] The two ends of the pipe body 1 are respectively provided with a connecting head 5 and a blowing head 6, the length of the connecting head 5 is 28.5±1mm, and the length of the blowing head 6 is 247±5mm. The connecting head 5 is convenient for the corrugated pipe to be connected with other equipment, pipeline or component, and through various connection modes (such as threaded connection, flange connection, sleeve connection, etc.), the firmness and sealing performance of the connection can be ensured, so that the whole pipeline system becomes a stable whole. The design of the connecting head 5 can provide accurate positioning for the installation of the corrugated pipe, ensure that the corrugated pipe can be correctly docked with other components during the installation process, reduce the installation error, improve the installation efficiency and the overall performance of the system.

[0022] The surface of the connecting head 5 is circumferentially provided with a plurality of first matching grooves 7, which cooperate with the corresponding structures on other connecting parts or equipment, can increase the tightness and stability of the connection, and ensure that the connection part will not be loose or leak during the operation of the pipeline system. The first matching groove 7 designed reasonably can make the connection process more smooth, facilitate the installation and disassembly operation of the operator, reduce the installation time and labor intensity, and also be beneficial to the later maintenance and replacement work.

[0023] The inner side of the connecting head 5 is provided with a second matching groove 8 between two adjacent first matching grooves 7. The second matching groove 8 is arranged between the adjacent first matching grooves 7, which can further improve the contact area and friction when the connecting head 5 is connected with other components, thereby enhancing the reliability and anti-tension and anti-torsion performance of the connection, especially in the pipeline system under large load or vibration, which can effectively prevent the loosening and falling of the connection part. It can cooperate with sealing elements (such as sealing rings, sealing pads, etc.) to form multiple sealing lines and improve the sealing performance of the connection part, which is of great significance for the pipeline system conveying special media such as pressure, toxic, flammable, explosive, etc.

[0024] The pipe body 1 is internally provided with a first channel 9 with two open ends, the inner diameter of the first channel 9 is 28.2±0.5mm, the connecting head 5 is internally provided with a second channel 10 communicating with the first channel 9, and the end of the second channel 10 away from the first channel 9 penetrates to the surface of the connecting head 5, the inner diameter of the second channel 10 is 32.8±0.5mm, the blowing head 6 is internally provided with a third channel 11 communicating with the first channel 9, and the end of the third channel 11 away from the first channel 9 penetrates to the surface of the blowing head 6, the inner diameter of the third channel 11 is 32.5±0.5mm. The pipe body 1 is made of LDPE material, which is a high molecular polymer polymerized under high temperature and high pressure conditions by free radical polymerization mechanism, and contains many long and short branches on the molecular chain. The arrangement between the molecular chains is relatively loose, which makes the LDPE have good flexibility, transparency and low temperature resistance and other properties.

[0025] The distance between the adjacent two first matching grooves 7 is consistent, and the outer diameter of the first matching groove 7 is 34.8±0.5mm. The distance between the adjacent two second matching grooves 8 is consistent. The distance between the adjacent two corrugated grooves 3 is consistent, the groove width of the corrugated groove 3 is 2.2mm, and the distance between the two corrugated grooves 3 is 2.5mm.

[0026] The working principle of the embodiment of the utility model is as follows: when installing, the pipe body 1 is installed on the equipment through the connecting head 5, the second matching groove 8 on the connecting head 5 is matched with the mounting part on the equipment, after installation, the gas enters through the second channel 10 of the connecting head 5, enters the third channel 11 after the first channel 9, and is blown out through the blowing head 6. During the blowing process, the noise of the gas in the first channel 9 can be reduced by the protruding part 4.

[0027] The above is a further detailed description of the utility model in combination with specific further embodiments, and cannot be deemed as limiting the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as the protection scope of the utility model.

Claims

1. A low voice frequency flat bellows characterized by, The utility model relates to a pipe body and center tangent, the pipe body is flat, the surface of pipe body is equipped with a plurality of corrugated groove, the both ends of corrugated groove are mutually symmetrical with center tangent as center, the inner recessed part of corrugated groove is equipped with protruding part, the both ends of protruding part are mutually symmetrical with center tangent as center, the both ends of pipe body are equipped with connecting head and blowing head respectively, the surface of connecting head is equipped with a plurality of first cooperation groove, the inside of connecting head is equipped with second cooperation groove between adjacent two first cooperation groove.

2. A low frequency flat corrugated pipe according to claim 1, characterized in that: The pipe body is equipped with first channel that two sides are communicated, the connecting head is equipped with second channel that is communicated with first channel in, and the one end of second channel is away from first channel and is penetrated to the surface of connecting head, the blowing head is equipped with third channel that is communicated with first channel, and the one end of third channel is away from first channel and is penetrated to the surface of blowing head.

3. The low frequency flat corrugated pipe according to claim 1, wherein: The pipe body is made of LDPE material.

4. The low frequency vocal audio flat corrugated tube according to any one of claims 1-3, characterized in that: The interval between adjacent two first cooperation grooves is consistent.

5. The low frequency vocal audio flat corrugated tube according to any one of claims 1-3, characterized in that: The interval between adjacent two second cooperation grooves is consistent.

6. The low frequency vocal audio flat corrugated tube according to any one of claims 1-3, characterized in that: The interval between adjacent two corrugated grooves is consistent.

7. The low frequency sound flat corrugated pipe according to any one of claims 1-3, characterized in that: The interval between adjacent two protruding parts is consistent.

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