Mobile phase bottle

Abstract

The mobile phase bottle comprises a bottle body and a bottle neck connected to the bottle body, the bottle neck is provided with an opening end, and the opening end faces the inclined lower portion. Compared with the existing design that the opening of the bottle neck faces upwards, the bottle neck of the mobile phase bottle is provided with the opening end facing downwards obliquely, so that the cap top of the bottle cap for sealing the opening end also faces downwards obliquely, and particulate foreign matters such as dust can be prevented from falling into a channel through an external pipe opening formed in the cap top; and the channel cannot be blocked even if the liquid chromatograph is idle for a long time, so that the normal use of the liquid chromatograph is ensured. In addition, the opening end of the bottle neck faces the inclined lower portion, part of the section of the bottle neck is certainly in a bent extending posture, the bent extending section enables the mobile phase to be subjected to resistance in the volatilization process, then backflow is formed, and volatilization of the mobile phase can be remarkably reduced.

Description

Technical Field

[0001] The present application relates to the technical field of liquid chromatographs, and in particular to a mobile phase bottle. Background Art

[0002] Mobile phase bottles are generally used in conjunction with liquid chromatographs to store mobile phases. Commercially available mobile phase bottles are generally provided with at least one bottleneck, each of which is provided with a bottle cap, through which a pump tube is inserted through at least one channel provided on the bottle cap, and the mobile phase bottle is connected inside and outside through the remaining channels to ensure pressure balance and avoid the situation in which the mobile phase cannot be pumped out due to negative pressure when completely sealed.

[0003] The opening end of the bottleneck of the existing mobile phase bottle is generally set to be an upward horizontal opening. After the bottle cap is connected to the bottleneck, the top of the cap used to close the opening end is also in a horizontal posture or a roughly horizontal posture, and the external pipe opening of the channel is formed on the top of the cap, which is easy to accumulate dust and other foreign particles. In actual use, the bottle cap of the mobile phase bottle is generally only plugged with one pump inlet pipe, and the rest of the channels are idle. Over time, dust and other foreign particles are easy to fall into the channel through the idle external pipe openings, causing pipeline blockage, and even blocking the primary pump or accumulation pump, affecting the normal use of the liquid chromatograph. Utility Model Content

[0004] The present application provides a mobile phase bottle, which is used to solve the problem that the channel of the existing mobile phase bottle is prone to accumulating dust and other foreign particles through the external pipe opening due to idleness, resulting in pipeline blockage or even blockage of the primary pump or the accumulation pump. The mobile phase bottle provided by the present application has an opening end of the bottleneck arranged to face obliquely downward, and when the opening end is sealed by the bottle cap, the top of the bottle cap can present an outward tilted posture, effectively avoiding the problem of dust and other foreign particles falling into the channel through the external pipe opening formed on the bottle cap and causing the channel to be blocked.

[0005] The present application provides a mobile phase bottle, which comprises a bottle body and a bottleneck connected to the bottle body; the bottleneck is provided with an open end; the open end faces obliquely downward.

[0006] In some embodiments, a bottle cap is further included, the bottle cap seals the open end; the bottle cap is provided with at least two channels, the channels pass through the bottle cap to connect the inner cavity of the bottle body with the external space of the bottle body.

[0007] In some embodiments, the bottleneck includes an elbow portion extending and bending toward the outer circumference, and an opening is provided at a terminal end of the elbow portion to form the open end.

[0008] In some embodiments, there are multiple bottlenecks, and the elbows on the multiple bottlenecks have different orientations.

[0009] In some embodiments, the bottleneck further includes a connecting portion, which is connected between the bottle body and the elbow portion, and the connecting portion is a straight tube, or an arc-shaped tube, or a special-shaped tube with an arc-shaped structure.

[0010] In some embodiments, it also includes an inlet pipe part and a plug, and the plug is detachably sealed and connected to the inlet pipe part.

[0011] In some embodiments, the pipe inlet portion is vertically connected to the elbow portion, and the top has a pipe inlet port vertically connected to the inner cavity of the bottle body.

[0012] In some embodiments, the bottle cap is detachably mounted on the open end; the bottle cap includes a cover body and a seal; the cover body is detachably connected to the open end, and the channel passes through the cover body; the seal is disposed between the cover body and the open end.

[0013] In some embodiments, the plane where the opening end is located forms an angle α with the axial direction of the bottle body, and 0°<α<90°.

[0014] In some embodiments, the angle α is between 30° and 60°.

[0015] In some embodiments, at least one of the channels is disposed on a rotation center of the bottle cap.

[0016] In some embodiments, the sealing member is a sealing ring; the channel is disposed through the top of the cover body that closes the open end.

[0017] In some embodiments, the seal is a plunger, which is at least partially sealedly inserted into the open end and at least partially sealedly clamped between the periphery of the open end and the cover body; the channel runs through the plunger and the cover body to close the top of the cover of the open end.

[0018] The beneficial effects of the present application are as follows: the mobile phase bottle provided by the present application has a bottleneck with an open end facing obliquely downward. Compared with the existing mobile phase bottle with the bottleneck opening facing upward, when the open end of the bottleneck of the mobile phase bottle of the present application is sealed by the bottle cap, the top of the cover used to close the open end also presents a posture of tilting outwards toward obliquely downward. In this way, dust and other particulate foreign matter can be prevented from falling into the channel through the external pipe mouth formed on the top of the cover, and even if it is idle for a long time, it will not cause blockage of the channel, avoid clogging the primary pump or the accumulation pump, and ensure the normal use of the liquid chromatograph. In addition, the opening end of the bottleneck faces obliquely downward, which inevitably makes its part of the section present a curved and extended posture. This part of the curved and extended section makes the mobile phase encounter resistance during the volatilization process, thereby forming a reflux, which can significantly reduce the volatilization of the mobile phase. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure diagram of a mobile phase bottle in an embodiment, the mobile phase bottle comprises a bottle body, a bottleneck, a bottle cap and a sealing ring, the bottleneck comprises a connecting portion and an elbow, and the connecting portion is coaxial with the bottle body;

[0020] Figure 2 for Figure 1 Schematic diagram of the structural breakdown of the mobile phase bottle;

[0021] Figure 3 for Figure 1 A schematic cross-sectional view of the local structure of the mobile phase bottle;

[0022] Figure 4 The schematic diagram of the structure decomposition of a mobile phase bottle in an embodiment, wherein the mobile phase bottle comprises a bottle body, a bottleneck, a bottle cap, a plug and a sealing ring, wherein the bottleneck comprises a connecting portion, an elbow and a pipe inlet portion, and the connecting portion is coaxial with the bottle body;

[0023] Figure 5 for Figure 4 A schematic cross-sectional view of a local structure in which a mobile phase bottle is provided with a pump inlet tube;

[0024] Figure 6 The schematic diagram of the structure decomposition of a mobile phase bottle in an embodiment, the mobile phase bottle comprises a bottle body, a bottleneck, a bottle cap and a plunger, the bottleneck comprises a connecting portion and an elbow, and the connecting portion is coaxial with the bottle body;

[0025] Figure 7 It is a schematic cross-sectional view of a local structure of a mobile phase bottle in an embodiment, wherein the mobile phase bottle comprises a bottle body, a plurality of bottlenecks and a bottle cap, and each of the bottlenecks comprises an inclined connecting portion and an elbow portion.

[0026] The reference numerals are as follows:

[0027] 1-mobile phase bottle, 11-inner cavity;

[0028] 2-bottleneck, 21-connecting part, 22-elbow part, 221-opening end, 23-pipe inlet, 231-pipe inlet;

[0029] 3-bottle cap, 31-cap body, 311-cap top, 312-air-proof opening, 32-sealing member, 321-plug part, 322-stopper;

[0030] 4- pump inlet pipe, 41- straight pipe section, 42- curved pipe section;

[0031] 5- plug;

[0032] A-first central axis, B-second central axis. DETAILED DESCRIPTION

[0033] The technical solution of the present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments use associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0034] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0035] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0036] See also Figures 1 to 3 The present application provides a mobile phase bottle. In some embodiments, the mobile phase bottle includes a bottle body 1 and a bottleneck 2 connected to the bottle body 1. The bottleneck 2 is provided with an open end 221, and the open end 221 of the bottleneck 2 is arranged to face obliquely downward.

[0037] The mobile phase bottle of the present application further includes a bottle cap 3, the bottle body 1 has an inner cavity 11, the bottle cap 3 seals the open end 221, and the bottle cap 3 is provided with at least two channels 30, which penetrate the bottle cap 3 to connect the inner cavity 11 of the bottle body 1 with the external space of the bottle body 1. It can be understood that the bottle cap 3 can be threadedly connected to the bottleneck 2 and close the open end 221, or can be detachably connected to the open end 221 of the bottleneck 2 by plugging and unplugging, which is not limited in the present application and can be set accordingly according to actual use requirements.

[0038] The mobile phase bottle provided by the present application has a bottleneck 2 provided with an open end 221 facing obliquely downward. Compared with the existing mobile phase bottle with the bottleneck opening facing upward, when the open end 221 of the bottleneck 2 of the mobile phase bottle of the present application is sealed by the bottle cap 3, the top 311 of the cover used to close the open end 221 of the bottle cap 3 also presents a posture tilted outwardly toward obliquely downward. In this way, it is possible to prevent dust and other foreign particles from falling into the channel 30 through the external pipe mouth formed on the top 311 of the cover, and even if it is idle for a long time, it will not cause the blockage of the channel 30, avoid clogging the primary pump or the accumulation pump, and ensure the normal use of the liquid chromatograph. In addition, the open end 221 of the bottleneck 2 faces obliquely downward, which inevitably makes its part of the section present a curved and extended posture. This part of the curved and extended section makes the mobile phase subject to resistance during the volatilization process, thereby forming a reflux, which can significantly reduce the volatilization of the mobile phase.

[0039] It is understandable that only one bottleneck 2 or multiple bottlenecks 2 can be provided on the bottle body 1, and this application does not limit this, and can be provided accordingly according to actual use needs. In addition, the bottle cap 3 can be made of a silicone material, so that after the silicone bottle cap is locked on the bottleneck 2, it can achieve a reliable seal with the open end 221, and there is no need to provide a seal between the bottle cap 3 and the open end 221.

[0040] When in use, the pump tube can be inserted into one of the channels 30, and the remaining idle channels 30 can connect the inner cavity of the bottle body 1 with the external space of the bottle body 1 to achieve balanced regulation of the internal and external air pressures.

[0041] See also Figures 1 to 3 In some embodiments, the bottleneck 2 includes an elbow portion 22 extending and bending toward the periphery, the elbow portion 22 extends toward the periphery relative to the central axis (i.e., the first central axis A, which will not be described below) of the bottle body 1, and an opening is provided at the end of the elbow portion 22 to form the above-mentioned open end 221.

[0042] The elbow 22 is an arc-shaped tube with an arc-shaped bending structure, one end of which is connected to the bottle body 1, and the open end 221 of the other end extends outward to the periphery of the first central axis A, and presents an inclined posture toward obliquely downward. When the open end 221 of the elbow 22 is sealed by the bottle cap 3, the cap top 311 of the bottle cap 3 that closes the open end 221 also presents an inclined posture toward the outside. In this way, dust and other granular foreign matter can be prevented from falling into the channel 30 through the external pipe mouth formed on the cap top 311, and the channel 30 will not be blocked even if it is idle for a long time, so as to avoid blocking the primary pump or the accumulation pump, and ensure the normal use of the liquid chromatograph. In addition, the arc-shaped bending structure of the elbow 22 makes the inner wall of the corresponding section of the bottleneck 2 form an arc-shaped wall that drains into the inner cavity 11 of the bottle body 1, and the mobile phase is subjected to the resistance of the arc-shaped wall during the volatilization process to form a reflux, and flows back to the inner cavity 11 of the bottle body 1 along the arc-shaped wall, which can greatly reduce the volatilization of the mobile phase.

[0043] The length of the elbow portion 22 extending outward is at least enough to allow space between the open end 221 and the bottle body 1 for convenient insertion of the tube, so as to prevent interference between the pump tube and the bottle body 1 when the pump tube is inserted through the channel 30 on the bottle cap 3. In addition, leaving enough space is also convenient for the insertion operation, which is convenient for users. As for the specific outward extension length of the elbow portion 22 and the curvature of the elbow portion 22, they can be set accordingly according to actual use needs, so as to facilitate the insertion operation during use.

[0044] See also Figure 7 In some embodiments, the mobile phase bottle may have multiple bottlenecks 2 (two are used as an example in this embodiment), and the elbows 22 on the multiple bottlenecks 2 have different orientations, so that when the mobile phase bottle is used in multiple channels, interference between the pump inlet tubes on the elbows 22 can be avoided. It can be understood that for a mobile phase bottle with multiple bottlenecks, the specific orientation of the elbows 22 on each bottleneck 2 can be set accordingly according to actual use needs, and this application does not limit this, as long as it does not affect the use needs of multiple channels.

[0045] See also Figures 1 to 7 In some embodiments, the bottleneck 2 further includes a connecting portion 21, which is connected between the bottle body 1 and the elbow 22. The connecting portion 21 is a straight tube, or an arc tube (not shown), or a special-shaped tube with an arc structure (not shown).

[0046] In the mobile phase bottle provided in the present application, the connecting portion 21, on the one hand, serves as an intermediate connecting section to connect the elbow portion 22 and the bottle body 1 together, thereby playing a connecting role and reducing the difficulty of manufacturing the mobile phase bottle; on the other hand, it can also raise the height of the elbow portion 22 compared to the bottle body 1, so that the elbow portion 22 can bend and extend toward the outer peripheral side away from the central axis of the bottle body 1, leaving a sufficient gap between the open end 221 and the bottle body 1, avoiding the inner bend part of the elbow portion 22 from being too close to the bottle body 1 and affecting its extension length toward the periphery, preventing interference with the bottle body 1 when inserted into the pump tube, and facilitating the intubation operation.

[0047] It can be understood that when the connecting portion 21 is a straight tube, it can be a vertical straight tube (such as Figures 1 to 6 ), or it can be an inclined straight tube (as shown in Figure 7 ).

[0048] See also Figures 1 to 6 In some embodiments, when the connecting portion 21 is a vertical straight tube, its axis coincides with the first central axis A. At this time, the bottleneck 2 is arranged at the top center of the bottle body 1, and the connecting portion 21 is coaxial with the bottle body 1. This structural design is used for a mobile phase bottle with a single bottleneck 2, so that the center of gravity of the mobile phase bottle as a whole is concentrated near the first central axis A, ensuring the standing stability of the mobile phase bottle.

[0049] In some other embodiments, when the connecting portion is a vertical straight tube, the axis thereof may also be parallel to the first central axis, and the bottleneck is arranged on one side of the top center of the bottle body. This structural design is preferably used for a mobile phase bottle with multiple bottlenecks, and each bottleneck is symmetrically arranged with the first central axis as the symmetry axis, so that the center of gravity of the mobile phase bottle can be evenly distributed around the first central axis, ensuring the standing stability of the mobile phase bottle while meeting the multi-channel use requirements of the mobile phase bottle.

[0050] See also Figure 7 In some embodiments, when the connecting portion 21 is an inclined straight tube, an angle β is formed between the central axis (i.e., the second central axis B, which will not be described in detail below) and the first central axis A, which is above the intersection of the two, and 0°<β<90°, so that the connecting portion 21 can connect the bottle body 1 and the elbow 22 in a non-vertical inclined posture. This structural design is preferably used in mobile phase bottles with multiple bottlenecks, so that each bottleneck 2 can be distributed in the surroundings with the first central axis A as the center, avoiding interference between the multi-channel pump inlet tubes, and facilitating the multi-channel use and operation of the mobile phase bottle. In addition, the connecting portion 21 is arranged in an inclined posture, and its inclined inner wall can cooperate with the arc-shaped curved structure of the elbow, further improving the reflux guiding effect on the volatilized mobile phase, thereby reducing the volatilization of the mobile phase.

[0051] It can be understood that in a mobile phase bottle with multiple bottlenecks, the straight tube connecting parts 21 of each bottleneck 2 can all be vertical straight tubes, or all can be inclined straight tubes, or include both vertical straight tubes and inclined straight tubes. The present application does not impose any limitation on this, as long as it meets the actual use needs.

[0052] Preferably, when the connecting portion 21 is an inclined straight tube, the angle β formed between the second central axis B and the first central axis A is between 30° and 60° (including 30° and 60°) (taking 30° as an example in this embodiment), so that the inclination angle of the connecting portion 21 is more conducive to the reflux of the volatilized mobile phase to the inner cavity 11 of the bottle body 1.

[0053] It can be understood that in the mobile phase bottle with a multi-neck structure, the connection portion 21 of one of the necks 2 can be arranged at the top center of the bottle body 1 and coaxial therewith, and the connection portions 21 of the other necks 2 can be arranged outside the top center of the bottle body 1, and the angle β formed between the second central axis B of the corresponding connection portion 21 and the first central axis A is between 0° and 90°. In this way, the necks 2 can be evenly distributed on the top of the bottle body 1, which is conducive to maintaining the balance of the mobile phase bottle itself and ensuring the standing stability of the mobile phase bottle.

[0054] See also Figures 4 to 6 In some embodiments, the mobile phase bottle of the present application further includes an inlet tube portion 23 and a plug 5 , and the plug 5 is detachably and hermetically connected to the inlet tube portion 23 .

[0055] The pipe inlet portion 23 is vertically connected to the elbow portion 22 , and the top of the pipe inlet portion 23 has a pipe inlet opening 231 vertically connected to the inner cavity 11 of the bottle body 1 , and the plug 5 seals the pipe inlet opening 231 .

[0056] Due to the curved structural design of the elbow portion 22, the open end 221 of the bottleneck 2 is not vertically connected to the bottle body 1. In order to ensure that the hard pump inlet tube 4 can be smoothly plugged into the inner cavity 11 of the bottle body 1, the pump inlet tube 4 can be designed as a split plug-in assembly structure, wherein one part is designed as a straight tube section 41 adapted to the bottle body 1 and the connecting portion 21, and the other part is designed as a curved tube section 42 adapted to the curvature of the bottleneck 2, and the straight tube section 41 and the curved tube section 42 are assembled by plugging and fixing.

[0057] Correspondingly, the pipe inlet portion 23 is vertically connected to the elbow portion 22, wherein the axis thereof coincides with the first central axis A of the bottle body 1, or is parallel to the first central axis A of the bottle body 1, so that the pipe inlet port 231 at the upper end of the pipe inlet portion 23 can be vertically connected to the inner cavity 11 of the bottle body 1, ensuring that the straight pipe section 41 of the pump inlet tube 4 can be vertically inserted into the mobile phase bottle through the pipe inlet port 231, thereby cooperating and plugging with the elbow section 42 extending through the open end 221.

[0058] The plug 5 is preferably interference-fitted with the pipe inlet 231, and is used to seal the pipe inlet 231 of the pipe inlet portion 23. In actual use, the plug 5 is first removed to expose the pipe inlet 231, the bottle cap 3 is removed to expose the open end 221, and then the straight pipe section 41 of the split plug-in assembly of the pump inlet pipe is vertically placed in the bottle body 1 through the pipe inlet 231, the curved pipe section 42 is placed in the bottleneck 2 through the open end 221 and plugged and fixed with the straight pipe section 41, the plug 5 is sealed and plugged into the pipe inlet 231, and then the outer port of the curved pipe section 42 is inserted into the corresponding channel 30 at the rotation center of the bottle cap, and finally the bottle cap is tightened to close the open end 221 to achieve the sealing of the mobile phase bottle.

[0059] It can be understood that the pipe inlet portion 23 on the bottleneck 2 can not only be used to insert the straight pipe section 41 of the pump tube 4 into the bottle body 1, but also can be used to pour or pour liquid medium into or out of the inner cavity 11 of the bottle body 1 through the pipe inlet portion 23, which is convenient for users.

[0060] It is understandable that, in the case where the pipe inlet portion 23 is not provided, the pump inlet pipe may also be provided as a pressure-resistant hose to adapt to the curved structure of the elbow portion 22 .

[0061] See also Figure 3In some embodiments, an angle α is formed between the plane where the open end 221 of the bottleneck 2 is located and the central axis (first central axis A) of the bottle body 1, which is above the intersection of the two and on the same side as the open end 221, and 0°<α<90°. It can be understood that when α is 0°, the plane where the open end 221 of the bottleneck 2 is located will be in a vertical posture; when α is 90°, the plane where the open end 221 of the bottleneck 2 is located will be in a horizontal posture. The angle α formed between the plane where the open end 221 of the mobile phase bottle of the present application is located and the central axis of the bottle body 1 is limited to 0°<α<90°, so that the plane where the open end 221 of the elbow 22 is located can be in a posture inclined downward within a limited angle range.

[0062] After adopting the above technical solution, the plane where the open end 221 of the elbow 22 is located can extend to the periphery of the first central axis A in an angle range of 0° to 90° (excluding 0° and 90°) and present an inclined posture facing obliquely downward. Compared with the existing design, it can prevent the encapsulated bottle cap 3 from directly receiving dust and other particulate impurities that fall freely due to gravity in a horizontal posture or a nearly horizontal posture, and prevent the channel 30 from being blocked due to dust accumulation at the external pipe opening formed on the bottle cap 3. The mobile phase bottle provided in the present application limits the angle α to within 90°, so that the plane where the open end 221 is located is tilted downward to a nearly horizontal posture at the maximum, so as to avoid excessive bending of the elbow 22 and cause the open end 221 to tilt toward the first central axis A, thereby preventing interference with the bottleneck 2 or the bottle body 1 when connected to the pump tube.

[0063] It can be understood that when the mobile phase bottle is provided with multiple bottlenecks 2 at the same time, the angle α formed between the plane where the open end 221 of the elbow part 22 on different bottlenecks 2 is located and the first central axis A can be the same or different. The present application does not limit this and can be set accordingly according to actual usage requirements.

[0064] like Figure 3 As shown, in some embodiments, the angle α between the plane where the open end 221 of the bottleneck 2 is located and the first central axis A is between 30° and 60° (including 30° and 60°), that is, 30°≤α≤60°. The mobile phase bottle provided in the present application limits the angle α to between 30° and 60° (taking 45° as an example in this embodiment), which can play a good role in preventing dust and blocking the channel 30, and the open end 221 of the elbow 22 will not be excessively tilted outward within this tilt angle range, which is convenient for users to observe and facilitate the insertion of the channel 30 on the bottle cap 3 into the pump tube, which is convenient for users to operate and use.

[0065] The mobile phase bottle provided in the present application is inserted into the pump tube through the bottle cap 3 arranged on the bottleneck 2, and at least two channels 30 are arranged on each bottle cap 3. When in use, the pump tube can be connected through one of the channels 30, and the remaining channels 30 can be used for pressure balance between the inner cavity 11 of the bottle body 1 and the external space of the bottle body 1.

[0066] See also Figures 1 to 5 In some embodiments, at least one channel 30 is disposed at the rotation center of the bottle cap 3. The bottle cap 3 is generally locked and fixed on the bottleneck 2 by threaded connection and closes the open end 221. When inserting the tube, the pump inlet tube can be plugged and fixed on the channel 30 at the rotation center of the bottle cap 3, and the remaining channels 30 are used as ventilation lines to adjust the air pressure balance between the inside and outside of the bottle body 1. In this way, the pump inlet tube can be loosened or tightened while being plugged into the bottle cap 3, which will not affect the pump inlet tube, and is convenient for users.

[0067] In some embodiments, the bottle cap 3 is detachably mounted on the open end 221 of the bottle neck 2 .

[0068] The bottle cap 3 includes a cap body 31 and a sealing member 32 . The cap body 31 is detachably connected to the open end 221 of the bottle neck 2 , and the channel 30 passes through the cap body 31 .

[0069] The sealing member 32 is disposed between the cover 31 and the opening end 221 of the bottle neck 2 .

[0070] The mobile phase bottle provided in the present application can be further sealed between the bottle cap 3 and the bottleneck 2 by a sealing member 32, so that the inner cavity 11 of the bottle body 1 forms a relatively closed space, preventing the mobile phase in the inner cavity 11 from volatilizing to the external space. In addition, the channel 30 penetrates the cover body 31 to close the cover top 311 of the open end 221, thereby connecting the inner cavity 11 of the bottle body 1 with the external space of the bottle body 1, so that the user can connect the pump tube through the corresponding channel 30, and achieve the pressure balance between the inner cavity 11 of the bottle body 1 and the external space of the bottle body 1 through other channels 30, avoiding the situation that the mobile phase cannot be pumped out due to negative pressure caused by the complete sealing of the inner cavity 11.

[0071] It can be understood that the sealing member 32 is made of a soft material so that it has a certain elasticity and deformation recovery capability.

[0072] See also Figure 2 and Figure 4 In some embodiments, the sealing member 32 can be configured as a sealing ring, which is sealed and clamped between the periphery of the opening end 221 of the elbow 22 and the top 311 of the bottle cap 3 .

[0073] The sealing ring itself is an annular structure, and its size is adapted to the peripheral size of the opening end 221, and there is an opening in the middle. In this way, the channel 30 is provided through the top 311 of the cover body 31, and the inner cavity 11 of the bottle body 1 can be connected with the external space of the bottle body 1 through the opening in the middle of the sealing ring and through the channel 30, which can significantly reduce the structural complexity of the bottle cap 3 and reduce the manufacturing cost of the mobile phase bottle.

[0074] When the cover body 31 is detachably connected to the open end 221 of the elbow portion 22 by a threaded connection, the pump inlet tube 4 adapted to the curvature of the elbow portion 22 can be inserted through the channel 30 arranged at the rotation center of the top 311 of the cover. In this way, when the bottle cap 3 is disassembled, the bottle cap 3 can be freely rotated around the pump inlet tube through the channel 30, thereby avoiding interference between the pump inlet tube and the elbow portion 22 of the bottleneck 2.

[0075] See also Figure 6 In some embodiments, the sealing member 32 may also be a plunger, which is at least partially inserted into the elbow 22 through the open end 221 and at least partially clamped between the periphery of the open end 221 and the cap top 311 of the bottle cap 3. The channel 30 passes through the plunger and the cap top 311 to connect the inner cavity 11 of the bottle body 1 with the external space of the bottle body 1.

[0076] The plunger is at least partially sealed and inserted into the open end 221 of the elbow 22, so that the plunger and the open end 221 of the elbow 22 are detachably connected in an interference fit manner, which can achieve a better sealing effect than the sealing method of the sealing ring. In addition, the part of the channel 30 that passes through the plunger can elastically clamp and fix the pump inlet tube, thereby improving the stability and reliability of the fixed connection between the bottle cap 3 and the pump inlet tube, and will not cause hard damage to the pump inlet tube itself.

[0077] The plunger includes a plug column portion 321 and a stopper portion 322. The outer diameter of the plug column portion 321 is slightly larger than the inner diameter of the opening end 221 of the elbow portion 22, so that the two are plugged and fixed in an interference fit manner. The stopper portion 322 is formed at the outer end of the plug column portion 321, and its outer diameter matches the periphery of the opening end 221 and the inner diameter of the cap top 311. During actual installation, the plug column portion 321 of the plunger is first sealed and inserted into the opening end 221 until the stopper portion 322 stops at the periphery of the opening end 221, and then the bottle cap 3 is threadedly assembled on the opening end 221, and the stopper portion 322 is clamped and fixed by the cap top 311 and the periphery of the opening end 221 to limit the plunger and achieve sealing of the opening end 221.

[0078] See also Figure 6In some embodiments, the channel 30 is disposed through the plunger, and a clearance opening 312 is disposed on the top 311 of the cap to expose the channel 30. The clearance opening 312 is preferably coaxial with the bottle cap 3, so that when the bottle cap 3 is threadedly connected to the open end 221 of the elbow 22, the plunger does not need to be screwed during the disassembly of the bottle cap 3, and there is no interference between the clearance opening 312 and the channel 30 and the pump inlet pipe, which facilitates the disassembly of the pump inlet pipe and is convenient for users.

[0079] The above specific examples are used to illustrate the technical solution of the utility model, which is only used to help understand the content of the utility model and is not intended to limit the utility model. For technicians in the technical field to which the utility model belongs, they can also make some simple deductions, deformations or substitutions based on the idea of ​​the utility model.

Claims

1. A mobile phase bottle, characterized in that: It comprises a bottle body (1) and a bottleneck (2) connected to the bottle body (1); The bottleneck (2) is provided with an open end (221); The opening end (221) faces obliquely downward.

2. The mobile phase bottle as claimed in claim 1, characterized in that, It also includes a bottle cap (3), wherein the bottle cap (3) seals the open end (221); The bottle cap (3) is provided with at least two channels (30), and the channels (30) penetrate the bottle cap (3) to connect the inner cavity (11) of the bottle body (1) with the external space of the bottle body (1).

3. The mobile phase bottle as claimed in claim 1, characterized in that, The bottleneck (2) comprises an elbow (22) extending and bending toward the outer periphery, and an opening is arranged at the end of the elbow (22) to form the open end (221).

4. The mobile phase bottle as claimed in claim 3, characterized in that, A plurality of the bottlenecks (2) are provided, and the elbows (22) of the plurality of bottlenecks (2) have different orientations.

5. The mobile phase bottle as claimed in claim 3, characterized in that, The bottleneck (2) further comprises a connecting portion (21), wherein the connecting portion (21) is connected between the bottle body (1) and the elbow (22), and the connecting portion is a straight tube, or an arc-shaped tube, or a special-shaped tube with an arc-shaped structure.

6. The mobile phase bottle as claimed in claim 3, characterized in that, It also comprises an inlet pipe portion (23) and a plug (5), wherein the plug (5) is detachably sealed and connected to the inlet pipe portion (23).

7. The mobile phase bottle as claimed in claim 6, characterized in that, The pipe inlet portion (23) is vertically connected to the elbow portion (22), and has a pipe inlet (231) at the top thereof that is vertically connected to the inner cavity (11) of the bottle body (1).

8. The mobile phase bottle as claimed in claim 2, characterized in that, The bottle cap (3) is detachably mounted on the opening end (221); The bottle cap (3) comprises a cap body (31) and a sealing member (32); the cap body (31) is detachably connected to the opening end (221), and the channel (30) passes through the cap body (31); The sealing member (32) is disposed between the cover body (31) and the opening end (221).

9. The mobile phase bottle according to any one of claims 1 to 8, characterized in that: The plane where the opening end (221) is located forms an angle α with the axial direction of the bottle body (1), and 0°<α<90°.

10. The mobile phase bottle according to claim 9, characterized in that: The angle α is between 30° and 60°.

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