阅读说明：本技术 离心式填充柱装柱机 (Centrifugal packed column packing machine ) 是由 马金婵 王钦玥 李莹 高艳华 于 2019-11-05 设计创作，主要内容包括：本发明的实施方式公开了一种离心式填充柱装柱机,包括,离心部件、推料部件和加料部件,并且推料部件和加料部件设置在离心部件上；其中,离心部件为可自转的圆锥,离心部件的外周壁在靠近离心部件的顶点的位置设置有引导槽,离心部件的侧面沿母线方向于引导槽和底面之间形成有固定槽；引导槽的过料口大于加料口,加料口通向固定槽；推料部件位于顶点和引导槽之间,推料部件包括在顶点和引导槽之间移动的推进件和驱动件；加料部件设置在离心部件上靠近顶点的位置,并且加料部件包括入口和环形出口。本发明通过离心力将固定相压入填充柱,解决了重复性差和人工成本高的问题,提高了加工的重复性的同时提高了生产效率。(The embodiment of the invention discloses a centrifugal packed column packing machine, which comprises a centrifugal part, a pushing part and a feeding part, wherein the pushing part and the feeding part are arranged on the centrifugal part; the centrifugal part is a cone capable of rotating, a guide groove is arranged on the outer peripheral wall of the centrifugal part at a position close to the vertex of the centrifugal part, and a fixing groove is formed between the guide groove and the bottom surface of the side surface of the centrifugal part along the bus direction; the material passing port of the guide groove is larger than the feeding port, and the feeding port is communicated with the fixed groove; the pushing component is positioned between the vertex and the guide groove and comprises a pushing piece and a driving piece which move between the vertex and the guide groove; the charging member is disposed on the centrifugal member proximate the apex and includes an inlet and an annular outlet. According to the invention, the stationary phase is pressed into the packed column through centrifugal force, so that the problems of poor repeatability and high labor cost are solved, the processing repeatability is improved, and the production efficiency is improved.)

1. The centrifugal packed column assembling machine is characterized by comprising a centrifugal part, a material pushing part and a material feeding part, wherein the material pushing part and the material feeding part are arranged on the centrifugal part; wherein the content of the first and second substances,

the centrifugal part is a cone and rotates around a straight line where the height of the cone is the rotation axis, a guide groove is arranged on the outer peripheral wall of the centrifugal part at a position close to the vertex of the centrifugal part, a fixing groove is formed on the side surface of the centrifugal part along the bus direction, and the fixing groove is positioned between the guide groove and the bottom surface of the centrifugal part;

the guide groove comprises a material passing opening and a material feeding opening, the material passing opening is larger than the material feeding opening, and the material feeding opening is communicated with the fixed groove; and the number of the first and second electrodes,

the fixing groove is used for placing a packed column, and when the packed column is placed in the fixing groove, a pipe orifice of the packed column is connected and communicated with the feed inlet;

the pushing component is arranged on the peripheral wall and positioned between the vertex and the guide groove, and comprises a pushing piece and a driving piece in transmission connection with the pushing piece; wherein the content of the first and second substances,

the propelling piece moves between the vertex and the guide groove and is used for pressing the stationary phase into the feeding port;

the feeding part is arranged on the centrifugal part at a position close to the vertex, the feeding part comprises an inlet and an annular outlet, the annular outlet is positioned above the feeding port, and the fixed phase flowing out from the annular outlet is annular when falling on the peripheral wall.

2. The centrifugal packed column packing machine according to claim 1, wherein said urging member comprises an annular elastic member whose circumferential length is variable, and is moved between a position near said apex and said guide groove by its own expansion and contraction;

when the annular elastic piece is in an extended state, the annular elastic piece abuts against the guide groove and elastically deforms to extrude the inner wall surface of the material passing hole;

when the annular elastic member is in a contracted state, the annular elastic member is close to the vertex, and the circumference and the inner part of the annular elastic member form a circular area which is smaller than that of the annular elastic member in an expanded state;

the annular outlet is located above a position between the guide groove and the annular elastic member in a contracted state.

3. The centrifugal packed column packing machine according to claim 1, wherein the guide groove is an annular groove formed around the outer peripheral wall of the centrifugal member.

4. The centrifugal type packed column packing machine according to claim 1, wherein the feed opening of the guide groove is formed with a stopper extending in a direction perpendicular to the outer peripheral wall.

5. The centrifugal packed column packing machine according to claim 1, wherein a fixing member is provided on the fixing groove.

6. The centrifugal packed column packing machine of claim 1, wherein the bottom end of the stationary chute is provided with a blocking member, the blocking member being an elastic material, the blocking member being in interference fit with the port at the bottom of the packed column when the packed column is placed in the stationary chute.

7. The centrifugal packed column packing machine of claim 1, wherein the inlet forms a receiving cavity and a sealing cover is provided on the receiving cavity.

8. The centrifugal packed column packing machine of claim 1, wherein the included angle of the generatrix of the centrifugal element with the bottom surface comprises 0-45 °.

Technical Field

The invention relates to the field of chromatography, in particular to a centrifugal packed column packing machine.

Background

The existing method for packing column is to plug glass wool on one end of the column, then connect a mechanical vacuum pump to pump air, install a funnel on the other end, slowly fill the dry stationary phase into the funnel, lightly knock the tube wall with a wooden stick until the column is full, and plug glass wool on a little space left at the end of the column.

This kind of mode needs the artificial ground to constantly strike the chromatographic column with the stick, and the dress post process generally will last a period, and the dress post people can be very tired and can't guarantee the even of the dynamics of strikeing, can destroy the stationary phase when strikeing the dynamics too big, and the packing post dress is not real during the undersize, leads to the repeatability relatively poor, and this mode can only adorn a packing post preparation inefficiency at the same time simultaneously, and the cost of labor is higher.

Disclosure of Invention

The invention aims to solve the problems of poor repeatability, low manufacturing efficiency and high labor cost in the prior art. The invention provides a centrifugal filling column packing machine which presses a fixed phase into a filling column through centrifugal force, and firstly, manual operation is omitted, and the problems of poor repeatability and high labor cost are solved; secondly, the invention can prepare a plurality of columns at the same time and apply force uniformly, thereby improving the repeatability and the production efficiency.

In order to solve the technical problem, the embodiment of the invention discloses a centrifugal packed column packing machine, which comprises a centrifugal part, a pushing part and a feeding part, wherein the pushing part and the feeding part are arranged on the centrifugal part; the centrifugal part is a cone and rotates around a straight line where the height of the cone is the rotation axis, a guide groove is arranged on the outer peripheral wall of the centrifugal part at a position close to the vertex of the centrifugal part, a fixed groove is formed on the side surface of the centrifugal part along the bus direction, and the fixed groove is positioned between the guide groove and the bottom surface of the centrifugal part; the guide groove comprises a material passing opening and a feeding opening, the material passing opening is larger than the feeding opening, and the feeding opening is communicated with the fixed groove; the fixing groove is used for placing a filling column, and when the filling column is placed in the fixing groove, a pipe orifice of the filling column is connected and communicated with the feeding port; the pushing component is arranged on the peripheral wall and positioned between the vertex and the guide groove, and comprises a pushing piece and a driving piece in transmission connection with the pushing piece; wherein the propelling part moves between the vertex and the guide groove, and the propelling part is used for pressing the stationary phase into the feeding port; the feeding part is arranged on the centrifugal part at a position close to the vertex, the feeding part comprises an inlet and an annular outlet, the annular outlet is positioned above the feeding port, and the fixed phase flowing out of the annular outlet is annular when falling on the peripheral wall.

By adopting the technical scheme, the stationary phase is added to the material passing port of the guide groove through the feeding component, then the stationary phase is pressed into the filling column through the guide groove by the extrusion of the material pushing component and the centrifugal action of the centrifugal component, the stationary phase is compacted in the filling column by the continuous operation of the centrifugal component, and the packed column is folded and coiled into the winding column according to the use requirement after being compacted, so that the packing column is suitable for packing of granular stationary phases such as molecular sieves, GDX series and the like. The manual knocking avoided by the scheme enables the stationary phase to be uniformly filled, and the problem of insufficient repeatability is solved by using centrifugal force for compaction.

According to another embodiment of the invention, the embodiment of the invention discloses a centrifugal packed column packing machine, wherein the propelling piece comprises an annular elastic piece with changeable circumferential length and moves between a position close to the vertex and the guide groove through self expansion and contraction; when the annular elastic piece is in an extension state, the annular elastic piece is abutted against the guide groove and elastically deforms to extrude the inner wall surface of the material passing hole; when the annular elastic part is in a contracted state, the annular elastic part is close to the vertex, and the circumference and the inner part of the annular elastic part form a circular area which is smaller than that of the annular elastic part in an expanded state; the annular outlet is located above a position between the guide groove and the annular elastic member in the contracted state.

Adopt above-mentioned technical scheme, through stretching of annular elastic component, because centrifugal part is conical, annular elastic component girth grow this moment, promptly at the width direction grow, and then make it move down until crossing the material mouth in vertical direction, continue to stretch and then annular elastic component is at the extrusion and the deformation of crossing the material mouth, annular elastic component is crowded to be filled up and is pressed the guiding groove with the stationary phase completely, the charge door and the packing column coupling and the intercommunication of guiding groove, the stationary phase gets into the packing post under the effect of centrifugal force, the effect of propelling the stationary phase to the guiding groove has been played, can extrude the stationary phase through elastic deformation again and get into inside the guiding groove completely.

According to another embodiment of the invention, the centrifugal packed column packing machine is disclosed in the embodiment of the invention, the guide groove is an annular groove and surrounds the outer peripheral wall of the centrifugal part.

Adopt above-mentioned technical scheme, the guiding groove supports each other and leans on and is the annular ring of arranging, arranges the annular ring around circular cone periphery wall round that is to say in the circumference of conical centrifugal part, and the stationary phase that annular export flowed out this moment is even falls in the guiding groove top, is pushed by the propulsion piece again, can carry out the dress post of many packing posts simultaneously.

According to another embodiment of the present invention, a centrifugal packed column packing machine is disclosed, in which a material passing port of a guide groove is formed with a blocking portion extending in a direction perpendicular to an outer peripheral wall.

Adopt above-mentioned technical scheme, set up the stopper and can block that the annular export flows out the stationary phase and is thrown away by the centrifugation before getting into the guiding groove.

According to another embodiment of the invention, the centrifugal packed column packing machine is disclosed, wherein the fixing groove is provided with a fixing piece.

Adopt above-mentioned technical scheme, can prevent through setting up the mounting that the packed column is thrown away by the centrifugation.

According to another specific embodiment of the invention, the centrifugal packed column packing machine disclosed by the embodiment of the invention is characterized in that the bottom end of the fixed groove is provided with a blocking piece, the blocking piece is made of elastic material, and when the packed column is placed in the fixed groove, the blocking piece is in interference fit with the port at the bottom of the packed column.

By adopting the technical scheme, the operation of inserting glass wool to block the port in the filling link is omitted, the glass wool can be repeatedly used, and the production efficiency is further improved.

According to another specific embodiment of the invention, the embodiment of the invention discloses a centrifugal packed column packing machine, an inlet forms a containing cavity, and a sealing cover is arranged on the containing cavity.

By adopting the technical scheme, the stationary phase is placed into the accommodating cavity of the inlet, and the upper sealing cover covers the accommodating cavity, so that the exposure probability of the stationary phase in the air can be reduced, and the inactivation of the stationary phase is avoided.

According to another embodiment of the invention, the centrifugal packed column packing machine is disclosed, wherein the included angle between the generatrix of the centrifugal part and the bottom surface is 0-45 degrees.

By adopting the technical scheme, the stationary phase can be kept to be at most one half towards the pipe wall of the filling column in the component force direction of the centrifugal force, so that the stationary phase is ensured to move towards the bottom end of the filling column under the action of the centrifugal force.

Drawings

FIG. 1 is a schematic view of a centrifugal packed column machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a centrifugal packed column machine in another embodiment in an example of the invention;

FIG. 3 is an enlarged partial view of the centrifugal part of a centrifugal packed column packing machine in an embodiment of the present invention;

FIG. 4 is a schematic view of an annular outlet structure of a centrifugal packed column packing machine in an embodiment of the present invention.

100: a centrifugal part; 110: an outer peripheral wall; 120: a vertex; 130: a guide groove; 131: a material passing port; 132: a feed inlet; 133: a blocking portion; 140: fixing grooves; 141: a fixing member; 142: a blocking member; 150: a rotation shaft;

200: a material pushing member; 210: a pusher member; 220: a drive member;

300: a charging member; 310: an inlet; 311: an accommodating chamber; 320: annular outlet

10: and (4) filling the column.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; 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 meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to solve the above technical problems, an embodiment of the present invention discloses a centrifugal packed column packing machine, as shown in fig. 1, including a centrifugal part 100, a pushing part 200 and a feeding part 300, and the pushing part 200 and the feeding part 300 are disposed on the centrifugal part 100; wherein, the centrifugal part 100 is a cone and rotates around a straight line where the height of the cone is a rotation axis, the outer peripheral wall 110 of the centrifugal part 100 is provided with a guide groove 130 at a position close to the vertex 120 of the centrifugal part 100, a fixing groove 140 is formed on the side surface of the centrifugal part 100 along the bus direction, and the fixing groove 140 is positioned between the guide groove 130 and the bottom surface of the centrifugal part 100; the guide groove 130 comprises a material passing opening 131 and a material feeding opening 132, the material passing opening 131 is larger than the material feeding opening 132, and the material feeding opening 132 leads to the fixing groove 140; the fixing groove 140 is used for placing the packing column 10, and when the packing column 10 is placed in the fixing groove 140, the nozzle of the packing column 10 is connected and communicated with the feed inlet 132; the pushing component 200 is arranged on the peripheral wall 110 and positioned between the vertex 120 and the guide groove 130, and the pushing component 200 comprises a pushing piece 210 and a driving piece 220 in transmission connection with the pushing piece 210; wherein the pushing member 210 moves between the apex 120 and the guiding groove 130, and the pushing member 210 is used for pressing the stationary phase into the feeding port 132; the charging member 300 is disposed on the centrifugal member 100 near the vertex 120, and the charging member 300 includes an inlet 310 and an annular outlet 320, the annular outlet 320 is located above the material passing opening 131, and the stationary phase flowing out of the annular outlet 320 is annular when it falls on the outer circumferential wall 110.

Specifically, the generatrix is the radius of the sector used to enclose the cone, and the generatrix direction is the waistline direction. The centrifugal part 100 rotates around a self-height straight line as a rotation axis to generate a centrifugal force in a horizontal direction, the packed column is placed along a waist line direction, and after a stationary phase (the stationary phase is a core of a chromatographic separation effect formed by the packed column 10 and mainly is a powdery or granular filler) enters the packed column 10, the stationary phase is subjected to the centrifugal force in the horizontal direction, is converted into a component force in a column tube direction under the influence of the inner wall of the packed column, and simultaneously moves towards the bottom of the column under the influence of gravity. The pumping and knocking operations are avoided.

When the packed column 10 is placed in the fixing groove 140, the column end of the packed column 10 is inserted into the feed opening 132 of the guide groove 130, and the stationary phase can directly enter the packed column 10 after entering from the feed opening 131. The bottom end of the packing column 10 can be inserted with glass wool or can be abutted with the bottom of the fixing groove 140 to form an interference fit. The guide groove is provided with the guide groove 130 at a position near the apex 120 of the centrifugal part 100, i.e., a position at a height in the drawing, which allows sufficient length of the fixing groove 140 on the belt line to place the packing column 10, and sufficient space to provide the pushing part 200 and the charging part 300.

The guiding groove 130 may be an annular groove as shown in fig. 2, and the material passing opening 131 is correspondingly an annular opening, and a plurality of material feeding openings 132 are disposed on the annular groove. The guide groove 130 may be a plurality of grooves as shown in fig. 1, and the fixing grooves 140 and the guide groove 130 may be the same in number and may be cooperatively disposed one-to-one. And the fixing groove 140 and the guide groove 130 are provided around the centrifugal part 100 one turn around the circumference so that the stationary phase of the conical centrifugal part 100 is pushed in the circumference direction at the same height as the material passing port 131. The guiding groove 130 can be gathered to the feeding opening 132 through the material passing opening 131, and the larger the number of the guiding groove 130 and the fixing groove 140, the smaller the material passing opening 131, the size of which can be specifically selected by those skilled in the art according to the design requirement. The stationary phase flowing out from the annular outlet 320 naturally falls down to the outer peripheral wall 110 to form an annular shape, that is, the stationary phase falls around the circumference of the centrifugal part 100 and above the guide groove 130 to be pushed into the packing column 10 by the pushing member 210.

The driving member 220 of the pushing member 200 may be driven by a shaft, a gear, or the like, which is commonly used by those skilled in the art, or may be driven by a combination of a telescopic rod and a force limiting spring in fig. 1, and the driving member 220 is driven by a power device such as a motor, which is not limited in this embodiment. The push driver 220 moves up and down in the belt line direction of the centrifugal part 100. The pusher 210 may be a piston or a push rod, and may also be an annular pusher.

Shown in fig. 1, 2 and 3 is a cross-sectional view of the feed block 300, wherein the inlet 310 of the feed block 300 is a single inlet, and the stationary phase is split and flows out at the annular outlet 320 after entering. And as shown in fig. 4, the annular outlet 320 is composed of a plurality of holes and is arranged in a ring shape, and since the annular outlet 320 is in a ring shape, the stationary phase is uniformly guided to flow out in a ring shape after reaching the annular outlet 320. For example, in the figure, the stationary phase enters at the inlet 310, the pipeline between the inlet 310 and the annular outlet 320 is concentrated, after reaching the annular outlet 320, the fixed phase moves towards the periphery at the middle convex position, and after reaching the annular outlet 320, the stationary phase uniformly flows out due to the same cross section at each position of the annular outlet 320, and the outflow is annular due to the annular combination of each cross section.

When the device is used, the stationary phase is added to the material passing port 131 of the guide groove 130 through the feeding component 300, then the stationary phase is pressed into the filling column 10 through the guide groove 130 through the extrusion of the material pushing component 200 and the centrifugal action of the centrifugal component 100, the stationary phase is compacted in the filling column 10 through the continuous operation of the centrifugal component 100, the long column is wound according to the use requirement after the filling column 10 is compacted, and the wound column is stretched at the bent position, so the device is particularly suitable for filling of granular stationary phases such as molecular sieves, GDX series and the like.

In a preferred embodiment, the pushing member 210 comprises an annular elastic member with a variable circumferential length, and is movable between a position near the apex 120 and the guide groove 130 by its expansion and contraction; when the annular elastic member is in an extended state, the annular elastic member abuts against the guide groove 130, and elastic deformation occurs to extrude the inner wall surface of the material passing port 131; when the annular elastic member is in a contracted state, the annular elastic member is close to the vertex 120, and the circumference and the inner part of the annular elastic member form a circular area smaller than that of the annular elastic member in an expanded state; the annular outlet 320 is located above a position between the guide groove 130 and the annular elastic member in the contracted state.

Specifically, the annular elastic member surrounds the centrifugal part 100, and since the centrifugal part 100 is conical, the annular elastic member can move up and down by changing the circumference of the annular elastic member as the height of the centrifugal part is higher and the circumference of the annular elastic member is smaller, that is, the driving member 220 pushes the annular elastic member from the vertical upper direction to the vertical lower direction along the waist line direction to stretch the annular elastic member, and conversely, the annular elastic member can be contracted by pulling the annular elastic member. When the annular elastic member is in an extended state and abuts against the guide groove 130, the annular elastic member is elastically deformed to press the inner wall surface of the material passing opening 131, and is contracted and then restored to an original state.

During the use, through stretching of annular elastic component, because centrifugal part 100 is conical, annular elastic component girth grow this moment, at the width direction grow promptly, and then make it move downwards at vertical direction until crossing material mouth 131, continue to stretch then annular elastic component at crossing material mouth 132 extrusion and deformation, annular elastic component is crowded to be filled up and is pressed the stationary phase guiding groove 130 completely into with the material mouth, the charge door 132 of guiding groove 130 is connected and communicates with filling post 10, the stationary phase gets into filling post 10 under the effect of centrifugal force, the effect of propelling the stationary phase to guiding groove 130 has been played, can extrude the stationary phase through elastic deformation and get into guiding groove 130 inside completely again.

In a preferred embodiment, as shown in fig. 2, the guide groove 130 is an annular groove that surrounds the outer peripheral wall 110 of the centrifuge member 100.

Specifically, the larger the number of the guide grooves 130 and the fixing grooves 140, the smaller the material passing opening 131, the size and the number of the guide grooves 130 can be specifically selected by those skilled in the art according to design requirements, as long as the plurality of guide grooves 130 can abut against each other and are annularly arranged on the separating member 100. At this time, the fixing groove 140 and the guide groove 130 are disposed around the centrifugal part 100 in a circle around the circumference, so that the stationary phase at any position of the conical centrifugal part 100 at the same height as the material passing port 131 in the circumference can be pushed in. Accordingly, the annular outlet 320 only needs to be formed into a ring, and the labor consumption in processing a plurality of outlets is avoided.

When the packing device is used, the guide grooves 130 are abutted against each other and annularly arranged, that is, the guide grooves 130 are annularly arranged around the conical outer peripheral wall 110 in the circumferential direction of the conical centrifugal part 100, at the moment, the stationary phase flowing out of the annular outlet 320 uniformly falls on the upper part of the guide grooves 130 and is pushed by the pushing piece 210, and then, the packing of a plurality of packing columns 10 can be simultaneously carried out.

In a preferred embodiment, as shown in fig. 2 and 3, the material passing opening 131 of the guide groove 130 is formed with a blocking portion 133 extending in a direction perpendicular to the outer circumferential wall 110.

Specifically, the blocking portion 133 may be L-shaped or straight plate-shaped.

In use, the blocking portion 133 is configured to block the annular outlet 320 from being spun off before the stationary phase enters the guide slot 130.

In a preferred embodiment, as shown in fig. 1 and 2, a fixing member 141 is provided on the fixing groove 140.

Specifically, the fixing member 141 may be a snap or a strap or a hinge and a lock, which are commonly used in the art.

When in use, the fixing member 141 can prevent the packed column 10 from being centrifugally thrown out.

In a preferred embodiment, as shown in fig. 1 and 2, the bottom end of the fixing groove 140 is provided with a blocking member 142, the blocking member 142 is made of an elastic material, and when the packing column 10 is placed in the fixing groove 140, the blocking member 142 is in interference fit with the port at the bottom of the packing column 10.

Specifically, the blocking member 142 may be a soft polymer or glass wool, and the bottom end alignment blocking member 142 of the packing column 10 is blocked by the same after the packing column 10 is inserted into the fixing groove 140, so as to facilitate the packing of the stationary phase

During the use, the operation of inserting glass wool to block up the port and then filling in the filling link among the prior art has been removed from to can used repeatedly, further improve production efficiency.

In a preferred embodiment, the inlet 310 forms a receiving cavity 311 and a sealing cover is provided on the receiving cavity.

Specifically, the receiving cavity 311 may be an inverted cone, and the sealing cover is a cover commonly used by those skilled in the art and covers the receiving cavity 311.

During the use, put into the stationary phase and hold the chamber of entry and cover sealed lid and can reduce the probability that the stationary phase exposes in the air, avoid the stationary phase deactivation.

In a preferred embodiment, as shown in fig. 1 and 2, the generatrix of the centrifugal part 100 includes an angle of 0-45 ° with the bottom surface.

When the device is used, the stationary phase can be kept to face the pipe wall of the filling column by at most one half of the component direction of the centrifugal force, so that the stationary phase is guaranteed to move towards the bottom end of the filling column under the action of the centrifugal force.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.