CN211528305U

CN211528305U - Hand tight joint structure

Info

Publication number: CN211528305U
Application number: CN201922346202.2U
Authority: CN
Inventors: 杨攀
Original assignee: Macy Scientific Instruments Suzhou Co ltd
Current assignee: Macy Scientific Instruments Suzhou Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-18
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a joint design is tightened to hand, including screwing up screw, clamping sleeve and sealing ring, screw up the inside cavity pipeline that is equipped with of screw, the outside is the step and is equipped with the thread, screws up the mesa and the end is twisted to the hand, and clamping sleeve is spacing in the cavity pipeline, and the sealing ring acts on clamping sleeve outside front end. The utility model discloses the structure is succinct reasonable, and the practicality is strong, and monomer screw cooperation lock sleeve adopts the hand to twist the setting of holding the end cooperation spanner, possesses better pressure resistance, can reach 140 MPa's tolerance pressure.

Description

Hand tight joint structure

Technical Field

The utility model relates to a medical instrument structure, concretely relates to high pressure joint of high performance liquid chromatograph, in particular to tight joint design of hand.

Background

The liquid chromatograph uses the difference of the distribution ratio of the mixture between two liquids which are liquid-solid or immiscible, to separate the mixture first, and then analyze and identify the mixture.

In the process of analysis and identification, the connection of the joint is required to be connected, and the traditional hand-screw structure resists pressure

Is relatively low, generally only 25-30MPa, and is relatively limited in application of a chromatograph.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem, provide a hand tight joint structure, the structure is succinct reasonable, and the practicality is strong, and monomer screw cooperation lock sleeve adopts the hand to twist the setting of holding the end of screwing up the end cooperation spanner, possesses better compressive property, can reach 140 MPa's tolerance pressure.

Furthermore, the sealing performance is improved by the arrangement of the sealing head, the conical diffusion pipeline is matched with the diffusion surface, the direction of the metal pipe can be conveniently adjusted, and the metal pipe is not easily damaged.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a hand-tightening joint structure comprises a tightening screw, a clamping sleeve and a sealing ring, wherein a hollow pipeline is arranged inside the tightening screw, the outer side of the tightening screw is provided with screw teeth, a tightening table board and a hand-tightening end in a stepped mode, the clamping sleeve is limited in the hollow pipeline, and the sealing ring acts on the front end of the outer side of the clamping sleeve.

Further, the hollow pipeline comprises a clamping pipeline at the front end, a limiting pipeline in the middle and a conical diffusion pipeline at the rear end.

Furthermore, the rear end of the conical diffusion pipeline is also provided with a diffusion surface.

Furthermore, the whole clamping sleeve is arranged in a conical shape, at least three equal parts of the clamping sleeve are provided with clamping pieces, and the middle part of the clamping sleeve is provided with a through pipeline clamping piece which is clamped after being limited by a clamping pipeline.

Further, the sealing ring is a tapered PEEK ring, and the larger end face of the sealing ring is matched with the larger end face of the clamping sleeve.

Furthermore, the hand twisting end is provided with anti-skid stripes.

To sum up, the utility model discloses possess following advantage:

the utility model discloses the structure is succinct reasonable, and the practicality is strong, and monomer screw cooperation lock sleeve adopts the hand to twist the setting of holding the end cooperation spanner, possesses better pressure resistance, can reach 140 MPa's tolerance pressure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a screw tightening structure;

FIG. 3 is a schematic view of a clamping sleeve configuration.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example 1:

a hand-tightened joint structure, as shown in FIGS. 1 to 3, includes a tightening screw 1, a clamping sleeve 2, and a seal ring 3.

Specifically, the interior of the tightening screw 1 is provided with a hollow pipeline 11, the outer side of the tightening screw is provided with screw teeth 12, a tightening table 13 and a hand-tightening end 14 in a stepped manner, and with reference to fig. 1, the hollow pipeline 11 comprises a clamping pipeline 111 at the front end, a limiting pipeline 112 at the middle part and a conical diffusion pipeline 113 at the rear end.

The clamping pipe 111 is used for locking the clamping sleeve 2, the diameter of the middle limiting pipe is matched with that of a 16-inch liquid conveying pipe, the conical diffusion pipe 113 facilitates bending of the liquid conveying pipe, and the rear end of the conical diffusion pipe 113 is further provided with a diffusion surface 114.

The clamping sleeve 2 is limited in the hollow pipeline 11, and particularly in the clamping pipeline 111, the sealing ring 3 acts on the front end of the outer side of the clamping sleeve 2.

Referring to fig. 3, the clamping sleeve 2 is integrally tapered, at least three equal parts of the clamping sleeve are provided with clamping pieces 21, a through pipeline 22 is formed in the middle of the clamping sleeve, and the clamping pieces 21 are clamped after being limited by the clamping pipeline 111.

In the embodiment, the clamping pieces 21 are arranged to be 4, namely, the clamping pieces are orthogonally and uniformly distributed, and the better clamping effect is achieved.

On the setting of sealing ring 3, it is the toper PEEK ring specifically, and its great terminal surface cooperates with the great terminal surface of clamping sleeve 2, and the pipeline of transmission liquid can pass clamping sleeve and sealing ring simultaneously.

Preferably, the hand-twisting end 14 is provided with anti-slip stripes to play an anti-slip role, so that the hand twisting is convenient.

To further explain in combination with the use mechanism, firstly, a pipeline for conveying the liquid penetrates through a hollow pipeline of a screwed screw, specifically penetrates through the conical diffusion pipeline 113, penetrates through the clamping pipeline 111, then penetrates through the clamping sleeve, penetrates through the smaller end surface of the clamping sleeve, penetrates through the larger end surface of the clamping sleeve, finally penetrates through the sealing ring, and the larger end surface of the sealing ring is matched with the larger end surface of the clamping sleeve 2.

The clamping sleeve penetrates into the clamping pipeline 111, then the screw is integrally screwed into a screw thread interface of a position to be used through the screw thread 12 and is manually locked, and in the screwing process, the clamping pipeline 111 and the clamping sleeve 2 continuously displace to achieve the locking effect.

Moreover, the screwing table top 13 can assist in screwing by a wrench under the condition that hand screwing cannot be completed, so that the structure can bear 140MPa pressure.

To sum up, this scheme structure is succinct reasonable, and the practicality is strong, and monomer screw cooperation lock sleeve adopts the hand to twist the setting of end cooperation spanner end, possesses better pressure resistance.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.

Claims

1. A hand tight joint structure which is characterized in that: including screwing up screw (1), clamp sleeve (2) and sealing ring (3), screw up screw (1) inside and be equipped with hollow pipeline (11), the outside is the step and is equipped with thread (12), screws up mesa (13) and hand and twists end (14), clamp sleeve (2) are in by spacingly in hollow pipeline (11), sealing ring (3) act on clamp sleeve (2) outside front end.

2. The hand cinching joint structure of claim 1, wherein: the hollow pipeline (11) comprises a clamping pipeline (111) at the front end, a limiting pipeline (112) in the middle and a conical diffusion pipeline (113) at the rear end.

3. The hand-tightened joint structure of claim 2, wherein: the rear end of the conical diffusion pipeline (113) is also provided with a diffusion surface (114).

4. The hand-tightened joint structure of claim 2, wherein: the whole clamping sleeve (2) is arranged in a conical shape, at least three clamping pieces (21) are arranged in trisection, a through pipeline (22) is formed in the middle of the clamping sleeve, and the clamping pieces (21) are limited by the clamping pipeline (111) and then clamped.

5. The hand cinching joint structure of claim 1, wherein: the sealing ring (3) is a conical PEEK ring, and the larger end face of the sealing ring is matched with the larger end face of the clamping sleeve (2).

6. The hand cinching joint structure of claim 1, wherein: the hand twisting end (14) is provided with anti-skid stripes.