A tangential air intake turn-back swirl tube fixing device
The technology of a fixing device and a swirl tube is applied in the field of a tangential air intake foldback type swirl tube fixing device, which can solve the problems of inability to meet mass production, poor production reliability, low production efficiency, etc., and achieves simple structure and guaranteed accuracy. degree, and the effect of facilitating production, processing and installation operations
Active Publication Date: 2020-11-24
CHINA NORTH VEHICLE RES INST
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Problems solved by technology
Therefore, improving the efficiency of the first-stage filter can greatly increase the life of the air filter, and its fixing device is also particularly important. The existing fixing devices mostly adopt an integrated or split-type non-sealed structure, and the materials are mostly made of plastic materials. , the traditional processing of swirl tubes is to insert and install the swirl tubes one by one by means of hot-melt flanging. The production efficiency is low and the production reliability is poor, which can no longer meet the needs of today's mass production. The purpose of the present invention is to A new type of tangential air intake swirl tube fixing device for air filters is designed and provided due to the shortcomings of the above products. Effect
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Embodiment 1
[0023] Such as Figure 1-5 As shown, the present invention provides a tangential inlet swirl pipe fixing device, wherein the swirl pipe is composed of a swirl pipe body 15, a gas tangential inlet pipe 14 and a central air outlet pipe 13. The pipe body 15 and the first fixed pipe arranged coaxially with the central air outlet pipe 13 and the second fixed pipe 1 arranged coaxially with the gas tangential air inlet pipe 13, the diameters of the first and second fixed pipes are all larger than the rotary Diameter of the flow tube, the first fixed tube is composed of an upper part and a lower part connected to each other, wherein the longitudinal section of the upper part is stepped, and the top is provided with a stepped small-diameter section 12 for installing the central air outlet pipe 13, stepped The small-diameter section 12 is provided with an undercut boss A and a limiting step A along the circumference, and an orientation structure 5 perpendicular to the two is arranged be...
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The invention provides a fixing device of a tangential air inflow reciprocating type rotational flow tube. The tangential air inflow reciprocating type rotational flow tube is composed of a rotational flow tube body, an air tangential inflow tube and a central air outflow tube, the fixing device comprises a first fixing tube and a second fixing tube, the first fixing tube and the rotational flow tube body are arranged with the same axis, the first fixing tube and the central air outflow tube are arranged with the same axis, the second fixing tube and the air tangential inflow tube are arranged with the same axis, the diameter of the first fixing tube and the diameter of the second fixing tube are larger than that of the rotational flow tube, the first fixing tube comprises an upper portion body and a lower portion body, the longitudinal section of the upper portion body is of a stepped shape, and the lower portion body is composed of a cylinder and a circular truncated cone. According to the first fixing tube and the second fixing tube which are arranged, on the premise that the degree of fitting is guaranteed, the space is greatly saved; and because each of the upper end and the lower end of the first fixing tube is provided with an overturned boss and a limiting step, the accuracy of installation is guaranteed.
Description
Technical field: [0001] The invention relates to the fields of machinery and air filtration, in particular to a tangential air intake turnback swirl tube fixing device. Background technique: [0002] The primary filter is one of the core components of the air filter. The dust-laden air enters the swirl tube along the intake pipe and rotates at high speed. Air enters the fine filter or the engine through the center outlet pipe. When the efficiency of the primary filter is 97%, the service life of the filter element is 20h; when the efficiency of the primary filter reaches 98.5%, the service life of the filter element can reach 40h. Therefore, improving the efficiency of the first-stage filter can greatly increase the life of the air filter, and its fixing device is also particularly important. The existing fixing devices mostly adopt an integrated or split-type non-sealed structure, and the materials are mostly made of plastic materials. , the traditional processing of swir...
Claims
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IPC IPC(8): F02M35/022
CPCF02M35/0204F02M35/0223
Inventor 李文超王建东邵春鸣陈克新李继新孙阳李明华卢进军乔梦华徐洪斌
Owner CHINA NORTH VEHICLE RES INST