Double-sealing hand-screwing connector

Abstract

The utility model discloses a double-seal hand-screwed joint, which relates to the technical field of fine parts, and comprises a male end, a female end and a sealing element, one end of the male end is provided with a connecting plug, and the end part of the connecting plug is provided with a first sealing groove; one end of the female end is provided with a receiving groove matched with the connecting plug, and the receiving groove is internally provided with a second sealing groove; a first sealing head and a second sealing head are arranged at the two ends of the sealing piece respectively, the first sealing head is matched with the first sealing groove, and the second sealing head is matched with the second sealing groove. According to the utility model, the pipeline is connected to the male end and the female end, during insertion, the sealing element is sleeved on the pipeline penetrating out of the male end, then the insertion head is inserted into the receiving groove, the first sealing head of the sealing element is inserted into the first sealing groove, and the second sealing head of the sealing element is inserted into the second sealing groove, so that the sealing performance between the male end and the female end is ensured; and the sealing piece is independently arranged and is convenient to disassemble, assemble and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to fine parts technical field, concretely is a double seal hand screw joint. BACKGROUND

[0002] High performance liquid chromatography is an important branch of chromatography, with liquid as mobile phase, using high pressure liquid delivery system, single solvent or mixed solvent of different proportion, buffer solution and other mobile phase are pumped into the chromatographic column with stationary phase, after each component is separated in the column, into the detector for detection, thereby realizing the analysis of sample. The system structure of high performance liquid chromatography includes liquid reservoir, pump, sample injector, chromatographic column, detector, recorder and several parts. The mobile phase in the liquid reservoir is pumped into the system by the high pressure pump, the sample solution enters the mobile phase through the sample injector, is carried into the chromatographic column (stationary phase) by the mobile phase, because each component in the sample solution has different distribution coefficient in two phases, when the two phases move relatively, after repeated adsorption-desorption distribution process, each component produces great difference in moving speed, is separated into single component and flows out from the column, when passing through the detector, the sample concentration is converted into electric signal and transmitted to the recorder, and the data is printed in the form of atlas.

[0003] High pressure liquid delivery pump, automatic sample injector and chromatographic column all belong to very important unit of liquid chromatograph, can take sample, sample and analyze autonomously in unattended condition. High pressure liquid delivery pump, automatic sample injector and chromatographic column are all assembled with fine liquid pipeline connection, so pipeline joint is often used. Because the existing pipeline joint is directly inserted into the female end of the pipeline joint through the male end of the pipeline joint, the sealing performance is poor, and liquid leakage may occur.

[0004] Therefore, a double seal hand screw joint is needed. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model solves the problems by the following technical structure.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A double seal hand screw joint, comprising: male end, female end and sealing piece, one end of the male end is provided with a plug joint, the end of the plug joint is provided with a first sealing groove;

[0008] One end of the female end is provided with a receiving groove matched with the plug joint, and a second sealing groove is arranged in the receiving groove;

[0009] Both ends of the sealing piece are respectively provided with a first sealing head and a second sealing head, the first sealing head is matched with the first sealing groove, and the second sealing head is matched with the second sealing groove.

[0010] Further features are characterized in that,

[0011] The ring side of the plug-in connector and the inner side of the receiving groove are provided with threads.

[0012] The male end is provided with a screw head at one end of the plug-in connector, and the diameter of the screw head is greater than that of the plug-in connector.

[0013] The ring side of the screw head is provided with a knurled pattern.

[0014] The first sealing groove is a tapered groove, and the first sealing head is tapered.

[0015] The second sealing groove is a tapered groove, and the second sealing head is tapered.

[0016] The taper of the first sealing head and the second sealing head is 1° to 5°.

[0017] The male end is provided with a tapered plug-in groove at the end away from the plug-in connector.

[0018] The sealing member is made of rubber material.

[0019] The first sealing head and the second sealing head are coaxially arranged.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] By connecting the pipeline on the male end and the female end, when plugging, the sealing member is sleeved on the pipeline passing through the male end, and then the plug-in connector is inserted into the receiving groove. At this time, the first sealing head of the sealing member is inserted into the first sealing groove, and the second sealing head is inserted into the second sealing groove, which ensures the sealing between the male end and the female end, and the sealing member is separately arranged, which is convenient for disassembly, assembly and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a structural schematic view of the embodiment;

[0023] Fig. 2 It is a structural schematic view of the male end in the embodiment;

[0024] Fig. 3 It is a structural schematic view of the female end in the embodiment.

[0025] In the figure: 1, plug-in connector; 2, first sealing groove; 3, receiving groove; 4, second sealing groove; 5, first sealing head; 6, second sealing head; 7, screw head. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0027] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment comprising a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0028] The above and other embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figs. 1-3 The present application will be described in further detail.

[0029] Reference will be made to Figs. 1-3 The double-sealing hand twist connector shown in the figure comprises a male end, a female end and a sealing element, one end of the male end is provided with a plug connector 1, and the end of the plug connector 1 is provided with a first sealing groove 2;

[0030] One end of the female end is provided with a receiving groove 3 matched with the plug connector 1, and the receiving groove 3 is provided with a second sealing groove 4;

[0031] Both ends of the sealing element 1 are respectively provided with a first sealing head 5 and a second sealing head 6, the first sealing head 5 is matched with the first sealing groove 2, and the second sealing head 6 is matched with the second sealing groove 4.

[0032] Based on the above structure, by connecting the pipeline on the male end and the female end, when plugging, the sealing element is sleeved on the pipeline passing out from the male end, and then the plug connector 1 is inserted into the receiving groove 3, at this time, the first sealing head 5 of the sealing element 1 is inserted into the first sealing groove 2, and the second sealing head 6 is inserted into the second sealing groove 4, so as to ensure the sealing property between the male end and the female end, and the sealing element is separately arranged, so as to facilitate disassembly, assembly and maintenance.

[0033] Further optimization is that, in order to ensure that the male end and the female end are firmly plugged, the ring side of the plug connector 1 and the inner side of the receiving groove 3 are both provided with threads, in this way, when in use, the plug connector 1 is directly screwed into the receiving groove 3, and when the plug connector 1 is screwed into the receiving groove 3, the both ends of the sealing element are deformed, so as to improve the sealing property.

[0034] As Fig. 1 and 2As shown, in order to facilitate the operation of the male end, the male end is provided with a screw head 7 at one end of the plug-in connector 1, the diameter of the screw head 7 is larger than that of the plug-in connector 1, and the male end can be conveniently operated by the screw head 7 with a larger diameter to screw the plug-in connector 1 into or out of the female end, and the ring side of the screw head 7 is provided with a knurled pattern to avoid slipping.

[0035] As shown in the drawings, Figs. 1-3 The first sealing groove 2 is a tapered groove, and the first sealing head 5 is tapered, and similarly, the second sealing groove 4 is a tapered groove, and the second sealing head 6 is tapered, and the tapered setting increases the contact area between the sealing element and the male end or the female end, improves the sealing performance, and when the male end is screwed into the female end, the sealing element deforms, further improving the sealing performance. In the embodiment, the taper of the first sealing head 5 and the second sealing head 6 is 10 degrees to 50 degrees.

[0036] Further optimization is that, as shown in Fig. 1 and Fig. 2 In order to facilitate the insertion of the pipeline into the male end, the male end is provided with a tapered insertion groove at the end away from the plug-in connector 1, so as to guide the pipeline into the male end.

[0037] Further optimization is that, in the embodiment, the sealing element is made of rubber material.

[0038] Further optimization is that, in the embodiment, the first sealing head 5 and the second sealing head 6 are coaxially arranged to ensure the sealing performance.

[0039] In summary, by connecting the pipeline to the male end and the female end, the sealing element is sleeved on the pipeline protruding from the male end when plugging, and then the plug-in connector 1 is inserted into the receiving groove 3, at this time the first sealing head 5 of the sealing element 1 is inserted into the first sealing groove 2, and the second sealing head 6 is inserted into the second sealing groove 4, ensuring the sealing performance between the male end and the female end, and the sealing element is separately arranged, facilitating disassembly, assembly and maintenance.

[0040] The above is only the preferred embodiment of the present application, and the utility model is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the utility model should be considered to be included in the protection scope of the utility model.

Claims

1. A dual seal screw-on fitting, characterized in that, The utility model relates to a kind of sealing structure of plug-in connector, including: Public end, female end and sealing piece, one end of the public end is provided with plug-in head (1), and the end of plug-in head (1) is provided with first sealing groove (2); One end of the female end is provided with the receiving groove (3) adapted with plug-in head (1), and the receiving groove (3) is provided with second sealing groove (4) in it; Two ends of the sealing piece are provided with first sealing head (5) and second sealing head (6) respectively, and the first sealing head (5) is adapted with first sealing groove (2), and the second sealing head (6) is adapted with second sealing groove (4).

2. A dual seal screw cap according to claim 1, wherein: The ring side of plug-in head (1) and the inside of receiving groove (3) are provided with thread.

3. A dual seal screw cap according to claim 2, wherein: One end of the public end in plug-in head (1) is provided with screw head (7), and the diameter of screw head (7) is greater than plug-in head (1).

4. A dual seal screw cap according to claim 3, wherein: The ring side of screw head (7) is provided with knurled net texture.

5. A dual seal screw cap according to claim 1, wherein: The first sealing groove (2) is tapered groove, and the first sealing head (5) is tapered.

6. A dual seal screw cap according to claim 5, wherein: The second sealing groove (4) is tapered groove, and the second sealing head (6) is tapered.

7. A dual seal screw cap according to claim 6, wherein: The taper of the first sealing head (5) and second sealing head (6) is 10 degrees to 50 degrees.

8. A dual seal screw cap according to claim 1, wherein: One end of the public end away from plug-in head (1) is provided with tapered plug-in groove.

9. A dual seal screw cap according to claim 1, wherein: The sealing piece is made of rubber material.

10. A dual seal screw cap according to claim 1, wherein: The first sealing head (5) and second sealing head (6) are coaxially arranged.

Images