CN219142748U - Chromatograph collecting buffer - Google Patents

Abstract

The utility model discloses a chromatograph collecting buffer, which comprises a main body, wherein the main body is cylindrical, a channel is arranged in the main body, a plurality of buffer cavities are arranged in the main body, the buffer cavities are respectively communicated with the channel, the buffer cavities are uniformly distributed in a ring shape by taking the axle center of the channel as the circle center, an annular groove is arranged on the inner peripheral surface of one end of the buffer cavity far away from the channel, a movable plug is slidably arranged on the inner surface of the annular groove, and an elastic piece is arranged between the movable plug and the corresponding annular groove.

Description

Chromatograph collecting buffer

Technical Field

The utility model relates to the technical field of chromatographs, in particular to a chromatograph collecting buffer.

Background

Currently, liquid chromatographs are used to prepare fractions that are isolated and collected for further characterization. For simple mixtures, the collection can be done manually with test tubes, or a three-way collection valve can be installed after the detector, and the fraction collection can be done by valve cutting.

The fraction collector consists of two basic components, a control component and a motion collection mechanical component. The control unit uses a timer to collect at constant time intervals and the mechanical unit is able to introduce the chromatographic effluent target component into a specific collection bottle.

One known method of collection of preparative chromatography fractions is as follows: a three-way collecting valve is arranged behind the detector, one way of the collecting valve is communicated with the fraction collector, and the other way is communicated with the waste liquid. The collection valve can switch to the collector when carrying out sample collection, and the sample passes through the collector nozzle and gets into the collection test tube this moment, and current test tube is collected and is required to drive through the arm and collect the nozzle and shift to next test tube after full. In order to ensure that the collecting drip nozzle cannot discharge liquid in the moving process of the mechanical arm, the pump is required to be stopped temporarily, the collecting valve is switched to waste liquid, the collecting valve is switched to recycle the collector after the mechanical arm moves to the next accurate position, and then the pump is continuously started, so that the cycle is repeated. At the moment of stopping the pump, the liquid in the pipeline has inertia due to short-time delay of stopping the pump, and the unclosed section of the pipeline can have the phenomenon of sample dripping, so that the sample is wasted.

For this purpose, a chromatograph collecting buffer is proposed.

Disclosure of Invention

The present utility model is directed to a chromatograph collecting buffer, which solves the above-mentioned problems in the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a chromatograph collects buffer, includes the main part, the main part is cylindrically, the inside of main part is provided with the passageway, the inside of main part is provided with a plurality of buffer chambers, buffer chamber communicates with the passageway respectively, and buffer chamber uses the axle center of passageway to be annular evenly distributed as the centre of a circle, buffer chamber keeps away from the one end inner peripheral surface of passageway and is provided with the ring channel, the internal surface slip of ring channel is equipped with movable stopper, movable stopper with correspond be provided with the elastic component between the ring channel.

According to the technical scheme, the novel portable electronic device further comprises a shell, wherein the shell is cylindrical, the main body is fixedly connected inside the shell, two ends of the main body are fixedly connected with two end side walls of the shell, and through holes are respectively formed in the corresponding channel of the side walls of the shell in a penetrating mode.

According to the technical scheme, the elastic piece comprises a fixed sleeve, the inner surface of the fixed sleeve is slidably provided with a movable rod, the fixed sleeve is located inside the annular groove, the inner peripheral surface of the annular groove is fixedly connected with the fixed sleeve through a plurality of connecting rods, the movable plug is fixedly connected with the movable rod, and a spring is arranged between the fixed sleeve and the corresponding movable rod.

According to the technical scheme, fixed telescopic internal surface slides and is equipped with the fly leaf, the both ends of spring contact with fly leaf and movable rod respectively, fixed telescopic inside rotates and is equipped with adjusting screw, adjusting screw runs through the terminal surface of fly leaf and with the fly leaf spiro union, the one end that adjusting screw kept away from the passageway runs through fixed telescopic terminal surface fixedly connected with adjust knob.

According to the technical scheme, the outer peripheral surface of the main body is sleeved with the rotating ring, the outer peripheral surface of the adjusting knob is provided with teeth, the surface of the rotating ring is fixedly connected with the crown gear, the adjusting knob is meshed with the crown gear through the teeth, the side wall of the shell is provided with the arc-shaped groove in a penetrating mode, and the outer peripheral surface of the rotating ring is fixedly connected with the shifting block corresponding to the arc-shaped groove.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the main body is provided, the channel is arranged in the main body, and the buffer cavities are arranged in the channel, so that after the equipment is connected into the chromatograph, when the pressure in the pipeline rises sharply, the buffer cavities can play a role in buffering to prevent the pipeline from being damaged, and meanwhile, the waste caused by liquid dripping is also prevented.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of the right-side cross-sectional structure of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3 at A;

in the figure: 1-main body, 2-channel, 3-buffer cavity, 4-ring channel, 5-movable plug, 6-shell, 7-through hole, 8-fixed sleeve, 9-movable rod, 10-spring, 11-movable plate, 12-adjusting screw, 13-adjusting knob, 14-rotating ring, 15-crown gear, 16-arc groove, 17-shifting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides a chromatograph collecting buffer, includes main part 1, as shown in fig. 2, main part 1 is cylindrically, the inside of main part 1 is provided with passageway 2, passageway 2 and main part 1 coaxial arrangement, the inside of main part 1 is provided with a plurality of buffer chambers 3, as shown in fig. 3, buffer chambers 3 communicate with passageway 2 respectively, and buffer chambers 3 take the axle center of passageway 2 to be the annular evenly distributed as the centre of a circle, buffer chambers 3 keep away from passageway 2's one end inner peripheral face is provided with ring channel 4, wherein ring channel 4 and the coaxial arrangement of corresponding buffer chambers 3, the internal surface slip of ring channel 4 is equipped with movable stopper 5, movable stopper 5 and correspond be provided with the elastic component between the ring channel 4, under the effect of elastic component, movable stopper 5 is located buffer chambers 3 and is close to passageway 2's one end, and when pipeline pressure increases, movable stopper 5 overcomes spring 10 and removes, plays the cushioning effect, prevents pipeline pressure from rising fast;

specifically, the device further comprises a shell 6, as shown in fig. 1, the shell 6 is cylindrical, the main body 1 is fixedly connected inside the shell 6, two ends of the main body 1 are fixedly connected with two end side walls of the shell 6, through holes 7 are respectively formed in the side walls of the shell 6 corresponding to the channels 2 in a penetrating manner, the through holes 7 and the channels 2 form a passage, and a gap is formed between the shell 6 and the main body 1 as shown in fig. 2;

specifically, the elastic piece comprises a fixed sleeve 8, a movable rod 9 is slidably arranged on the inner surface of the fixed sleeve 8, the fixed sleeve 8 is positioned in the annular groove 4, the inner peripheral surface of the annular groove 4 is fixedly connected with the fixed sleeve 8 through a plurality of connecting rods, the fixed sleeve 8 and the corresponding annular groove 4 are coaxially arranged under the action of the connecting rods, the movable plug 5 is fixedly connected with the movable rod 9, a spring 10 is arranged between the fixed sleeve 8 and the corresponding movable rod 9, and the movable rod 9 generates a trend of moving in the direction close to the channel 2 under the action of the spring 10, so that the movable plug 5 is limited;

specifically, the inner surface of the fixed sleeve 8 is slidably provided with a movable plate 11, the movable plate 11 can slide in the fixed sleeve 8 along the axis direction of the fixed sleeve 8, two ends of the spring 10 are respectively contacted with the movable plate 11 and the movable rod 9, an adjusting screw 12 is rotatably arranged in the fixed sleeve 8, the adjusting screw 12 is coaxially arranged with the fixed sleeve 8, the adjusting screw 12 penetrates through the end surface of the movable plate 11 and is in threaded connection with the movable plate 11, one end of the adjusting screw 12 far away from the channel 2 penetrates through the end surface of the fixed sleeve 8 and is fixedly connected with an adjusting knob 13, the adjusting knob 13 drives the adjusting screw 12 to rotate through rotating the adjusting knob 13, and the movable plate 11 is driven to slide in the fixed sleeve 8 under the action of threaded fit to adjust the pretightening force of the spring 10, so that the pretightening force of the spring 10 can be reasonably adjusted according to the actual pressure in a pipeline;

specifically, the outer peripheral surface of the main body 1 is sleeved with a rotating ring 14, the rotating ring 14 and the main body 11 are coaxially arranged, the outer peripheral surface of the adjusting knob 13 is provided with teeth, the surface of the rotating ring 14 is fixedly connected with a crown gear 15, the adjusting knob 13 is meshed with the crown gear 15 through the teeth, so that the rotating ring 14 is rotated, the rotating ring 14 drives the crown gear 15 to rotate, the crown gear 15 drives the adjusting knob 13 to synchronously rotate, the adjusting screw 12 is driven to synchronously rotate, the movable plate 11 is controlled to move in the fixed sleeve 8 under the action of screw thread fit, the pretightening force of the spring 10 is synchronously adjusted, the side wall of the shell 6 penetrates through an arc groove 16, a shifting block 17 is fixedly connected to the position, corresponding to the arc groove 16, of the outer peripheral surface of the rotating ring 14, and passes through the arc groove 16 and is positioned outside the shell 6, and the shifting block 17 slides along the arc groove 16 through control of the shifting block 17, so that the rotating ring 14 can rotate relative to the main body 1;

as shown in fig. 2, two ends of the main body 1 are respectively provided with a connecting nozzle, one end of the connecting nozzle is provided with an insertion tube, the insertion tube is inserted into two ends of the channel 2, the outer circumferential surface of the insertion tube is tightly attached to the inner circumferential surface of the channel 2, and the connecting nozzle is convenient to fix with the pipeline.

When the device is used, the device is connected to a pipeline, after the pressure in the pipeline suddenly increases, the movable plug 5 drives the movable rod 9 to overcome the movement of the spring 10, a buffer effect is achieved, the pipeline is prevented from being damaged due to the increase of the pressure in the pipeline, the rotating ring 14 drives the crown gear 15 to rotate, the crown gear 15 drives the adjusting knob 13 to synchronously rotate, the adjusting screw 12 is driven to synchronously rotate, the movable plate 11 is controlled to move in the fixed sleeve 8 under the action of screw thread fit to synchronously adjust the pretightening force of the spring 10, the side wall of the shell 6 penetrates through the arc-shaped groove 16, the shifting block 17 penetrates through the arc-shaped groove 16 to be positioned outside the shell 6, and the rotating ring 14 can rotate relative to the main body 1 by controlling the shifting block 17 to slide along the arc-shaped groove 16.

It is noted that 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.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a chromatograph collects buffer, includes main part (1), its characterized in that: the utility model discloses a buffer structure, including main part (1), buffer cavity (3), ring channel (4) are provided with in the inside of main part (1), the inside of main part (1) is provided with a plurality of buffer chamber (3), buffer chamber (3) communicate with passageway (2) respectively, and buffer chamber (3) use the axle center of passageway (2) to be annular evenly distributed as the centre of a circle, one end inner peripheral surface that passageway (2) was kept away from to buffer chamber (3) is provided with ring channel (4), the internal surface slip of ring channel (4) is equipped with activity stopper (5), activity stopper (5) are provided with the elastic component between ring channel (4) with corresponding.

2. A chromatograph-collection buffer according to claim 1, characterized in that: the novel multifunctional portable electric heating device is characterized by further comprising a shell (6), wherein the shell (6) is cylindrical, the main body (1) is fixedly connected inside the shell (6), two ends of the main body (1) are fixedly connected with two end side walls of the shell (6), and through holes (7) are respectively formed in the side walls of the shell (6) corresponding to the channels (2) in a penetrating mode.

3. A chromatograph-collecting buffer according to claim 2, characterized in that: the elastic piece comprises a fixed sleeve (8), a movable rod (9) is arranged on the inner surface of the fixed sleeve (8) in a sliding mode, the fixed sleeve (8) is located inside the annular groove (4), the inner peripheral surface of the annular groove (4) is fixedly connected with the fixed sleeve (8) through a plurality of connecting rods, the movable plug (5) is fixedly connected with the movable rod (9), and a spring (10) is arranged between the fixed sleeve (8) and the corresponding movable rod (9).

4. A chromatograph-collection buffer according to claim 3, characterized in that: the inner surface sliding of fixed sleeve (8) is equipped with fly leaf (11), the both ends of spring (10) contact with fly leaf (11) and movable rod (9) respectively, the inside rotation of fixed sleeve (8) is equipped with adjusting screw (12), adjusting screw (12) run through the terminal surface of fly leaf (11) and with fly leaf (11) spiro union, the terminal surface fixedly connected with adjust knob (13) are run through to the one end that passageway (2) were kept away from to adjusting screw (12).

5. The chromatograph collecting buffer according to claim 4, wherein: the outer peripheral surface of the main body (1) is sleeved with a rotating ring (14), the outer peripheral surface of the adjusting knob (13) is provided with teeth, the surface of the rotating ring (14) is fixedly connected with a crown gear (15), and the adjusting knob (13)

The side wall of the shell (6) is provided with an arc-shaped groove (16) in a penetrating way through the tooth to be meshed with the crown gear (15),

the outer peripheral surface of the rotating ring (14) is fixedly connected with a shifting block (17) corresponding to the arc-shaped groove (16).

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