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Connecting structure

A technology for connecting structures and fixing joints, which is applied in the direction of filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problems of not being as good as coarse thread, increase cost, and cannot be used, so as to achieve good anti-loosening function and improve dismantling The effect of loading speed

Active Publication Date: 2014-12-24
江苏正本净化节水科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Reduce the lead angle of the thread, or reduce the pitch, that is, change the coarse thread to the fine thread, which can reduce the loosening force of the two parts on the thread contact surface, that is, the fine thread has better Relaxation performance, however, the connection strength of fine thread is not as good as that of coarse thread, and it puts forward higher requirements for the machining accuracy of parts, so this method is a method of increasing cost, and in the case of the connection structure required to withstand large internal pressure also can not be used

Method used

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Examples

Experimental program
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Embodiment 1

[0059] See Figure 1 to Figure 5 , The coupling structure of this embodiment includes a tubular housing 1 , a sealing ring 2 , a fixed coupling 3 and an end cap 4 .

[0060] The edge of the end cap 4 is provided with a cylindrical surface 4-1 fitted inside the tubular casing 1, and the end of the cylindrical surface 4-1 extends outwards from a first ring 4-2. The cylindrical axis of the cylindrical surface 4 - 1 is parallel to the axis of the tubular shell 1 , and the plane where the first ring 4 - 2 is located is perpendicular to the axis of the tubular shell 1 . The fixed link 3 is in the shape of a tube, and a second circular ring 3-1 extending inward toward the central axis is provided at the end thereof. The inner wall of the tubular housing 1, the inner wall of the second ring 3-1, the cylindrical surface 4-1 and the outer wall of the first ring 4-2 jointly define an annular space, and the sealing ring 2 is arranged in the annular space. The dimension of the cross sect...

Embodiment 2

[0067] See Figure 6 and Figure 7, This embodiment is basically the same as Embodiment 1, except that: the inner wall of the second ring 3-1 of the fixed coupling member 3 is provided with a first short tube 3-3. The inner wall of the tubular housing 1, the end surface of the first short pipe 3-3, the cylindrical surface 4-1 and the outer wall of the first ring 4-2 jointly define an annular space, and the sealing ring 2 is arranged in the annular space. The end cover 4 is provided with a limit cover 4-6. The limiting cover 4-6 is located outside the fixed coupling 3, and the outer diameter of the limiting ring 4-3 or the limiting cover 4-6 is larger than the inner diameter of the second ring 3-1.

Embodiment 3

[0069] See Figure 8 , This embodiment is basically the same as Embodiment 1, except that: the inner wall of the tubular casing 1 is provided with an annular platform 1-2 near the end. The inner diameter of the annular platform 1 - 2 is smaller than the outer diameter of the first circular ring 4 - 2 on the end cap 4 .

[0070] The annular platform 1-2 can stop the end cap 4 from moving inwardly from the end of the tubular casing 1. The principle of determining the position is: when assembling, when the end cap 4, the fixed coupling 3 and the tubular casing 1 are in the axial direction After the relative position reaches the set position, it can ensure that the sealing ring 2 produces enough compression. After the sealing ring 2 produces enough compression, the fixed coupling 3 or the tubular shell 1 is rotated to make the rotating fixed coupling 3 and the tubular shell The body 1 also fits in place circumferentially. The joint structure assembled in this way, the sealing ri...

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Abstract

The invention discloses a connecting structure. The connecting structure comprises a tubular shell, a sealing ring, a fixed connecting piece and an end cover, wherein the edge of the end cover is provided with a cylindrical surface which is assembled inside the tubular shell, and a first circular ring extends out from the end part of the cylindrical surface; the cylindrical axis of the cylindrical surface is parallel to the axis of the tubular shell, a plane on which the first circular ring is located is perpendicular to the axis of the tubular shell; the fixed connecting piece is in a tubular shape, and the end part of the fixed connecting piece is provided with a second circular ring which extends towards the inside of a central axis; the inner wall of the tubular shell, the inner wall of the second circular ring, the cylindrical surface and the outer side wall of the first circular ring collectively define an annular space, and the sealing ring is arranged in the annular space; 2 to 4 columns of second convex ribs are uniformly arranged on the inner wall of the fixed connecting piece along the circumferential direction; the outer wall of the end part of the tubular shell is provided with first convex ribs which are correspondently engaged with the second convex ribs, and the number of the first convex ribs is identical to that of the second convex ribs. Two components can be rotated in the circumferential direction in place only by rotating the connecting structure for 45 degrees, 60 degrees or 90 degrees, so that the disassembling and installation speed can be greatly increased.

Description

technical field [0001] The invention relates to a coupling structure. Background technique [0002] The tubular casing connection structure with threaded connection, or its end cover connection structure, can be disassembled, especially used in the filter element casing of the water purifier, and the filter element casing can be reused, which is a low-cost raw material saving Carbon-friendly structure. Since the filter element of the water purifier is generally under internal pressure, the connection structure is required to have high strength and tightness. In order to ensure the quality of the connection, it is generally required that the effective thread should not be less than 3 turns, usually designed to be 3 to 5 turns. In this way, when disassembling, there are several turns of the thread that need to be rotated several times, and the dismounting speed is not fast enough, which is a bit troublesome. On the other hand, the thread has a tendency to loosen automaticall...

Claims

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Application Information

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IPC IPC(8): B01D35/31
Inventor 徐立农黄樟焱
Owner 江苏正本净化节水科技实业有限公司
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