CN219417359U - Liquid chromatograph hand is twisted and is connected - Google Patents

Abstract

The utility model discloses a hand-screwed joint of a liquid chromatograph, which relates to the technical field of liquid chromatographs and comprises a pipeline and a threaded joint part sleeved on the pipeline by threads, wherein one end of the threaded joint part is provided with a blade ring sleeved on the pipeline, and the hand-screwed joint is characterized in that: the one end that the blade ring was kept away from to the screwed joint portion is provided with the hand and twists the joint portion, the movable sleeve of hand is located on the pipeline, the draw-in groove joint of hand twist the joint portion in the screwed joint portion lug, thereby twist the joint portion through the screw and extrude the blade ring with the screwed joint portion, thereby make blade ring and pipeline fasten on the pipeline through tight fit, ingenious power messenger two joint portion cooperations can effectively extrude the blade ring when screwing, changed traditional joint and adopted monkey wrench or ordinary spanner to twist the mode of operation, improved the convenience of staff in the restricted space, also improved the efficiency of screwing the joint.

Description

Liquid chromatograph hand is twisted and is connected

Technical Field

The utility model relates to the technical field of liquid chromatographs, in particular to a hand-screwed joint of a liquid chromatograph.

Background

At present, the liquid chromatograph needs to use a screwing joint on many parts in the use process, for example: infusion pumps, six-way valves, chromatographic columns, detectors, etc., particularly at the joints at the ends of the chromatographic column, are very frequently disassembled. CN214174263U discloses a double-blade ring capillary tube assembly for liquid chromatography, a metal blade ring is sleeved on a rigid pipe sleeve, and a better sealing effect is achieved by arranging the blade ring.

However, when the existing stainless steel joint is screwed and fixed, the operation is inconvenient, so that the blade ring cannot be effectively locked on the liquid path pipe, and liquid leakage is easy to occur; or that it is not possible to reserve a suitable protruding length of the liquid line, resulting in an excessive dead volume in the flow path.

Disclosure of Invention

The technical problem to be solved by the utility model is to improve the convenience of people in operating the screwing joint to enable the blade ring to be effectively fastened on the pipeline, and avoid the risk of overlarge dead volume in a flow path caused by liquid leakage and proper liquid pipeline protruding length which cannot be reserved due to insufficient screwing.

In order to solve the problems, the utility model provides a hand-screwed joint of a liquid chromatograph, which comprises a pipeline and a threaded joint part sleeved on the pipeline by threads, wherein one end of the threaded joint part is provided with a blade ring sleeved on the pipeline, and the hand-screwed joint is characterized in that: the one end that the screwed joint portion kept away from the cutting edge ring is provided with the hand and twists the joint portion, the joint portion movable sleeve is located on the pipeline to the hand, the draw-in groove joint of hand twist the joint portion in the screwed joint portion lug, thereby twist the hand and twist joint portion and thereby extrude the cutting edge ring with the screwed joint portion through screwing, thereby make cutting edge ring and pipeline fasten on the pipeline through tight fit.

Preferably, the threaded joint part comprises a threaded connection end and a joint protrusion end fixedly arranged at the side part of the threaded connection end, the threaded protrusion at the outer edge of the pipeline is connected with a threaded groove at the inner end of the threaded connection end in a rotary separation mode, the connection fixation of the pipeline and the threaded joint part can be effectively ensured, and meanwhile, the installation and the disassembly are convenient.

Preferably, the outer edge of the protruding end of the joint is provided with at least 3 positioning protrusions extending towards the side ends, and the center of the protruding end of the joint is provided with a through hole for the pipeline to pass through.

Preferably, the positioning protrusion is in an arc-shaped or square or columnar structure.

Preferably, the hand-screwing joint part comprises a screwing holding end and a locking positioning end fixedly arranged on the side part of the screwing holding end, the lower ends of the screwing holding end and the locking positioning end are both provided with a yielding slot, the pipeline penetrates through the yielding slot to movably sleeve the screwing holding end and the locking positioning end on the pipeline, the yielding slot can flexibly sleeve the hand-screwing joint part on the pipeline, and meanwhile, the hand-screwing joint part and the threaded joint part are convenient to clamp.

Preferably, the outer edge of the screwing and holding end is provided with an inwards concave positioning groove, the outer edge of the screwing and holding end is also provided with an anti-skid thread, the anti-skid thread can play an anti-skid role, the fixity of a hand-held screwing joint of a person can be effectively ensured, and the human engineering principle is met.

Preferably, the inner end of the locking positioning end is provided with a limiting clamping groove, the positioning protrusion is clamped in the limiting clamping groove, and the positioning protrusion and the limiting clamping groove are in adaptive arrangement.

Preferably, the opening of the edge ring inner edge is in a gradient structure.

By adopting the structure, the beneficial effects of the structure are that:

the utility model has simple structure, reasonable design and portability, is clamped in the lug of the threaded joint part through the clamping groove of the hand-screwed joint part, and the threaded joint part is screwed by screwing the hand so as to squeeze the blade ring, so that the blade ring is fastened on a pipeline, the blade ring can be effectively squeezed by the two joint parts in a matched manner by ingenious force during screwing, the blade ring is fastened on the pipeline, the way that the traditional joint is screwed by adopting an adjustable wrench or a common wrench is changed, the convenience of manual operation in a limited space is improved, and the efficiency of screwing the joint is also improved.

Drawings

Fig. 1 is a schematic structural view of a hand-screwed joint of a liquid chromatograph according to the present utility model.

Fig. 2 is a front view of the hand-screwed joint of the liquid chromatograph of the present utility model.

Fig. 3 is a cross-sectional view of A-A in fig. 2.

Fig. 4 is a schematic structural view of a threaded joint.

Fig. 5 is a schematic view of the structure of the hand-screwed head.

In the figure: the device comprises a 1-pipeline, a 2-threaded joint part, a 201-threaded joint end, a 202-joint protruding end, a 203-positioning protrusion, a 204-perforation, a 3-blade ring, a 4-hand-screwed joint part, a 401-screwing holding end, a 402-locking positioning end, a 403-yielding groove, a 404-positioning groove, a 405-anti-skid thread and a 406-limiting clamping groove.

Detailed Description

The utility model is further illustrated by the following figures and examples.

As shown in fig. 1, a liquid chromatograph hand-screwed joint, including pipeline 1 and screw thread joint portion 2 that the screw thread cup joints on the pipeline, the one end of screw thread joint portion 2 is provided with and cup joints the sword ring 3 on pipeline 1, the one end that sword ring 3 was kept away from to screw thread joint portion 2 is provided with hand-screwed joint portion 4, hand-screwed joint portion 4 movable sleeve locates on pipeline 1, the draw-in groove joint of hand-screwed joint portion 4 in the lug of screw thread joint portion 2, thereby through thereby screw-screwed joint portion 4 with screw thread joint portion 2 extrusion sword ring 3, thereby make sword ring 3 and pipeline 1 fasten on pipeline 1 through tight fit, ingenious the power of using makes two joint portion cooperations effectively extrude sword ring 3 when screwing, makes sword ring 3 fasten on pipeline 1, has changed traditional joint and has adopted adjustable wrench or ordinary wrench to screw the mode of screwing, has improved the convenience of the interior staff operation of restricted space, has also improved the efficiency of screwing the joint.

As shown in fig. 2, 3 and 4, the threaded joint portion 2 includes a threaded connection end 201 and a joint protrusion end 202 fixedly disposed at a side portion of the threaded connection end, and the threaded protrusion at the outer edge of the pipeline 1 is connected with the threaded groove at the inner end of the threaded connection end 201 in a rotationally separated manner, so that the connection fixability of the pipeline 1 and the threaded joint portion 2 can be effectively ensured, and meanwhile, the installation and the disassembly are convenient.

The outer edge of the joint protruding end 202 is provided with at least 3 positioning protrusions 203 extending towards the side ends, the positioning protrusions 203 are of arc-shaped or square or columnar structures, a through hole 204 for the pipeline 1 to pass through is formed in the center of the joint protruding end 202, and an opening at the inner edge of the blade ring (3) is of a gradient structure.

As shown in fig. 2, 3 and 5, the hand-screwing joint portion 4 includes a screwing holding end 401 and a locking positioning end 402 fixedly disposed at a side portion of the screwing holding end, a yielding slot 403 is disposed at lower ends of the screwing holding end 401 and the locking positioning end 402, the pipeline 1 passes through the yielding slot 403 to movably socket the screwing holding end 401 and the locking positioning end 402 on the pipeline 1, the yielding slot 403 can flexibly socket the hand-screwing joint portion 4 on the pipeline 1, and meanwhile, the hand-screwing joint portion 4 and the threaded joint portion 2 are convenient to be clamped.

The outer edge of the screwing and holding end 401 is provided with an inwards concave positioning groove 404, the outer edge of the screwing and holding end 401 is also provided with an anti-skid thread 405, the anti-skid thread 405 can play an anti-skid role, the fixity of a hand-holding and screwing joint of a person can be effectively ensured, and the human engineering principle is met.

The inner end of the locking positioning end 402 is provided with a limiting clamping groove 406, the positioning protrusion 203 is clamped in the limiting clamping groove 406, and the positioning protrusion 203 and the limiting clamping groove 406 are in adaptive arrangement.

In order to facilitate understanding of the above technical solutions of the present utility model, the following describes the above technical solutions of the present utility model in detail through a specific usage manner.

The specific working process is as follows: firstly, the threaded groove at the inner end of the threaded connection end 201 of the threaded joint part 2 is rotationally connected with the threaded bulge at the outer edge of the pipeline 1, the pipeline 1 passes through the through hole 204 at the center of the joint bulge end 202, then the pipeline 1 passes through the screwing holding end 401 of the screwing joint part 4 and the yielding slot 403 at the lower end of the locking positioning end 402, so that the screwing joint part 4 is movably sleeved on the pipeline 1, the positioning bulge 203 is clamped in the limiting clamping groove 406, so that the screwing joint part 4 is clamped and fixed with the threaded joint part 2, then the screwing joint part 4 is screwed, the threaded joint part 2 is rotated forwards by screwing the screwing joint part 4, the blade ring 3 is extruded, and the blade ring 3 is fastened on the pipeline 1.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features of the utility model described herein.

Claims (8)

1. The utility model provides a liquid chromatograph hand is twisted and is connected, includes pipeline (1) and screw thread joint portion (2) that the screw thread cup joints on pipeline (1), the one end of screw thread joint portion (2) is provided with and cup joints cutting edge ring (3) on pipeline (1), its characterized in that: the one end that blade ring (3) was kept away from to screwed joint portion (2) is provided with hand and twists joint portion (4), on pipeline (1) was located to hand and twist joint portion (4) movable sleeve, the draw-in groove joint of hand and twist joint portion (4) in screwed joint portion (2) lug, thereby twist joint portion (4) through the screw and thereby extrude blade ring (3) with screwed joint portion (2), thereby make blade ring (3) and pipeline (1) fasten on pipeline (1) through tight fit.

2. The liquid chromatograph hand-screw joint according to claim 1, characterized in that: the threaded joint part (2) comprises a threaded connection end (201) and a joint protrusion end (202) fixedly arranged on the side part of the threaded connection end, and the threaded protrusion at the outer edge of the pipeline (1) is connected with a threaded groove at the inner end of the threaded connection end (201) in a rotary separation mode.

3. The liquid chromatograph hand-screw joint according to claim 2, characterized in that: the outer edge of the joint protruding end (202) is provided with at least 3 positioning protrusions (203) extending towards the side ends, and a through hole (204) for the pipeline (1) to pass through is formed in the center of the joint protruding end (202).

4. A liquid chromatograph hand-screw joint according to claim 3, characterized in that: the positioning protrusion (203) is in an arc-shaped or square or columnar structure.

5. The liquid chromatograph hand-screwed joint according to claim 3 or 4, characterized in that: the hand-screwed joint part (4) comprises a screwing holding end (401) and a locking positioning end (402) fixedly arranged on the side part of the screwing holding end, the lower ends of the screwing holding end (401) and the locking positioning end (402) are respectively provided with a yielding slot (403), and the pipeline (1) penetrates through the yielding slots (403) to movably sleeve the screwing holding end (401) and the locking positioning end (402) on the pipeline (1).

6. The liquid chromatograph hand-screw joint of claim 5, wherein: the outer edge of the screwing holding end (401) is provided with an inwards concave positioning groove (404), and the outer edge of the screwing holding end (401) is also provided with an anti-skid thread (405).

7. The liquid chromatograph hand-screw joint of claim 5, wherein: the inner end of the locking positioning end (402) is provided with a limiting clamping groove (406), the positioning protrusion (203) is clamped in the limiting clamping groove (406), and the positioning protrusion (203) and the limiting clamping groove (406) are in adaptive arrangement.

8. The liquid chromatograph hand-screw joint according to claim 1, characterized in that: the opening of the inner edge of the blade ring (3) is in a gradient structure.