Multi-cutting-edge-ring high-sealing-structure hand tightening connector

Abstract

The utility model discloses a multi-blade ring high-sealing structure hand tightening connector which comprises a connector body, a sealing structure channel and a pipeline channel are arranged in the connector body, the sealing structure channel is provided with a sealing structure, the sealing structure is composed of at least two blade rings and a blade ring sleeve, and the sealing structure directly acts on a pipeline. According to the utility model, the thought that a traditional hand tightening joint is sealed by one blade ring and a blade ring sleeve is broken through, and the at least two blade rings and the blade ring sleeve are adopted to clasp a pipeline in a segmented manner, so that the sealing performance of the structure is improved, and the liquid leakage failure rate is reduced. The utility model has the advantages of simple and clear structure, strong practicability, good sealing performance, high pressure resistance and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid chromatography and ion chromatography technical field, concretely relates to a kind of multi-blade ring high sealing structure hand tight joint. BACKGROUND

[0002] Hand tight joint is the key component of connecting pipeline, detector and chromatographic column. The connection of zero dead volume without leakage can ensure the efficiency and repeatability of chromatographic system.

[0003] Traditional hand tight joint mostly adopts one blade ring to seal, and the blade ring is tightly held on pipeline by rotating the joint, so as to seal. However, the traditional hand tight joint has relatively low pressure resistance, generally only 25-30 MPa. In the use scene of high-pressure environment and soft material, liquid leakage is easily caused, and there is a deficiency in sealing property. SUMMARY

[0004] The utility model provides a kind of multi-blade ring high sealing structure hand tight joint to solve the above problem, the structure breaks through the thought of one blade ring and blade ring sleeve pipe sealing of traditional hand tight joint, uses at least two blade rings and blade ring sleeve pipe, and the pipeline is segmented and tightly held, the sealing property of structure is improved, and liquid leakage failure rate is reduced.

[0005] To achieve the above purpose, the utility model adopts the technical scheme that:

[0006] A kind of multi-blade ring high sealing structure hand tight joint, including joint main body, the joint main body inside is equipped with sealing structure passageway and pipeline passageway, the sealing structure passageway is equipped with sealing structure, it is characterized in that, the sealing structure is at least composed of two blade rings and blade ring sleeve pipe, and the sealing structure directly acts on pipeline.

[0007] Further, the blade ring fixed in the sealing structure passageway entrance end is not movable.

[0008] Further, the sealing structure is connected by thread cooperation.

[0009] Further, the blade ring and blade ring sleeve pipe are locked when the sealing structure is stressed.

[0010] Further, the material of the joint main body is polyether ether ketone.

[0011] Further, the blade ring and blade ring sleeve pipe can be made of polyether ether ketone, stainless steel, titanium alloy and other corrosion-resistant materials.

[0012] In summary, the utility model has the following advantages:

[0013] (1) The utility model has simple and reasonable structure and strong practicability.

[0014] (2) the structure adopts sealing structure composed of multiple blade rings and blade ring sleeves to directly segmentally act on the pipeline, the sealing structure is pressed by the screwed hand tight connector, deforms, tightly holds the pipeline, and forms sealing, and the sealing of the structure is better than that of the traditional hand tight connector;

[0015] (3) the structure can resist high pressure of 20-100MPa, and is suitable for more scene chromatographic applications. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a multi-blade ring high sealing structure hand tight connector main body structure schematic view of the utility model;

[0017] Fig. 2 is a multi-blade ring high sealing structure hand tight connector structure schematic view of the utility model;

[0018] Fig. 3 is a multi-blade ring high sealing structure hand tight connector sealing structure partial structure enlarged view of the utility model;

[0019] In the figure, 1 is a connector main body, 2 is a sealing structure channel, 3 is a pipeline channel, 4 is a sealing structure, 5 is a blade ring, and 6 is a blade ring sleeve. DETAILED DESCRIPTION

[0020] The utility model will be further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be arbitrarily combined to form new embodiments without conflict.

[0021] As Figs. 1-3 the utility model embodiment provides a multi-blade ring high sealing structure hand tight connector, including connector main body 1, the inside of connector main body 1 is equipped with sealing structure channel 2 and pipeline channel 3, sealing structure channel 2 is equipped with sealing structure 4, and it is characterized in that, sealing structure 4 is at least composed of two blade rings and blade ring sleeves, and sealing structure 4 directly acts on the pipeline.

[0022] Specifically, the blade ring 5 fixedly and inactively at the inlet end of the sealing structure channel 2.

[0023] Specifically, the sealing structure 4 is connected by thread cooperation.

[0024] Specifically, the blade ring 5 and the blade ring sleeve 6 are locked when the sealing structure 4 is stressed.

[0025] Specifically, the material of the connector main body 1 is polyether ether ketone.

[0026] Specifically, the blade ring 5 and the blade ring sleeve 6 can be made of polyether ether ketone, stainless steel, titanium alloy and other corrosion-resistant materials.

[0027] The advantages of the multi-blade ring high sealing structure hand tight joint embodiment of the present application include:

[0028] (1) The present application has simple structure and strong practicability.

[0029] (2) The sealing structure 4 composed of multiple blade rings 5 and blade ring sleeves 6 directly acts on the pipeline in segments, and through the rotation of the hand tight joint, the sealing structure is subjected to pressure, deforms, tightly holds the pipeline, and forms a seal. The sealing performance of this structure is better than that of the traditional hand tight joint.

[0030] (3) The structure can withstand high pressure of 20-100MPa and is suitable for more scenarios of chromatographic application.

[0031] It should be understood that the above embodiments are exemplary and non-limiting, and various obvious or equivalent modifications or replacements of the above details can be made by those skilled in the art without departing from the basic principles of the present application, and all shall be included in the scope of the claims of the present application.

Claims

1. A multi-blade ring high sealing structure hand tight joint, comprising a joint body (1), a sealing structure channel (2) and a pipeline channel (3) are arranged inside the joint body (1), the sealing structure channel (2) is provided with a sealing structure (4), characterized in that, The sealing structure (4) is composed of at least two blade rings (5) and blade ring sleeves (6), and the sealing structure (4) directly acts on the pipeline.

2. The multi-bladed ring high seal structure hand tight joint according to claim 1, characterized in that, The blade ring (5) at the inlet end of the sealing structure channel (2) is fixed and cannot move.

3. The multi-bladed ring high seal structure hand tight joint according to claim 1, characterized in that, The sealing structure (4) is connected through a threaded fit.

4. The multi-bladed ring high seal structure hand tight joint according to claim 1, characterized in that, The blade ring (5) and the blade ring sleeve (6) are locked when the sealing structure (4) is stressed.

5. The multi-bladed ring high seal structure hand tight joint according to claim 1, characterized in that, The material of the joint body (1) is polyether ether ketone.

6. The multi-bladed ring high seal structure hand tight joint according to claim 1, characterized in that, The material of the blade ring (5) and the blade ring sleeve (6) is polyether ether ketone, stainless steel or titanium alloy.

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