CN213609144U - Air pipe plug-in connector, air pressure monitoring assembly of plunger cavity and library preparation system - Google Patents

Abstract

The utility model provides an atmospheric pressure control subassembly and library preparation system in trachea plug-in connection, plunger chamber, include: a seat structure, a connection structure, and a clap structure; the first end of the communicating structure is provided with an air pipe channel, the second end of the communicating structure is provided with a rear end communicating channel, and the air pipe channel is communicated with the rear end communicating channel; a seat body channel is arranged in the seat body structure, and the connection structure is arranged in the seat body channel in a penetrating manner; the connecting structure can lock and unlock an air pipe inserted into the air pipe channel; the clapping part can be switched between a first position and a second position, when the clapping part is positioned at the first position, the clapping part claps and touches a clapping surface of the connecting structure along a first direction, and the connecting structure can release an air pipe inserted into the air pipe channel when the clapping surface is touched; when the patting part is located at the second position, a gap is formed between the patting part and the patting surface along the first direction.

Description

Air pipe plug-in connector, air pressure monitoring assembly of plunger cavity and library preparation system

Technical Field

The utility model relates to a trachea connection field especially relates to an atmospheric pressure control subassembly and library preparation system in trachea plug-in connection, plunger chamber.

Background

In some application fields, it is necessary to realize automatic and fast insertion and extraction of the air tube, for example: in the field of library preparation, the field of medical instruments, the field of kitchens and bathrooms, and the like, and further, taking the field of library preparation as an example, the air pipe splicing connector can be adopted to realize the quick splicing of the air pipe of the card box.

In the prior art, the air pipe plug connector is provided with an air pipe channel into which an air supply pipe is inserted, and the air pipe is inserted into the air pipe channel by manual plugging and unplugging, so that the air pipe is not convenient to rapidly unplug.

SUMMERY OF THE UTILITY MODEL

The utility model provides a trachea plug-in connection connects atmospheric pressure control subassembly and library preparation system in plunger chamber to solve the problem that is not convenient for realize that the trachea is extracted fast.

According to the utility model discloses an aspect provides a trachea plug-in connection, include: the base structure, the connecting structure and the clapping structure with the clapping part;

the first end of the communicating structure is provided with an air pipe channel for inserting an air supply pipe along a first direction, the second end of the communicating structure is provided with a rear end communicating channel, and the air pipe channel is communicated with the rear end communicating channel; a seat body channel is arranged in the seat body structure, and the connection structure is arranged in the seat body channel in a penetrating manner; the connecting structure can lock and unlock an air pipe inserted into the air pipe channel;

the clap portion can switch between first position and second position, wherein:

when the clapping part is positioned at the first position, the clapping part claps and touches the clapping surface of the connecting structure along the first direction, wherein the connecting structure can release the trachea inserted into the trachea channel when the clapping surface is touched;

when the patting part is located at the second position, a gap is formed between the patting part and the patting surface along the first direction.

Optionally, the clapping portion is switched between the first position and the second position by a rotational motion and/or a translational motion.

Optionally, the clapping structure is a clapping type electromagnet, and the clapping type electromagnet is mounted on the seat body structure.

Optionally, the switch-on structure includes straight-through portion and switching shaft, the trachea passageway is located the first end of straight-through portion, the first end of switching shaft is connected the second end of straight-through portion, rear end intercommunication passageway is located the switching shaft, straight-through portion can lock and unclamp and insert the trachea of trachea passageway, the face of clapping is located straight-through portion.

Optionally, the straight-through portion is a threaded straight-through joint with a clamping ring, the clamping ring can lock and loosen an air pipe inserted into the air pipe channel, and the clapping surface is arranged on the clamping ring.

Optionally, the matching surface is an end surface of the straight portion, which is far away from the transfer shaft.

Optionally, the switch-on structure can move relatively to the seat structure, and the relative movement includes a movement along the first direction and a movement along a second direction, where the second direction is opposite to the first direction.

Optionally, the air pipe plug connector further includes an elastic component, the elastic component is respectively connected to the seat structure and the connection structure, wherein the elastic component can provide an elastic acting force, and the elastic acting force is an acting force for driving the connection structure to move along the second direction relative to the seat structure.

Optionally, the seat structure includes a mounting seat, a front end cover and a rear end cover; the front end cover is arranged on a first side surface of the mounting seat, the rear end cover is arranged on a second side surface of the mounting seat, the first side surface is a side surface facing one side of the air pipe, and the second side surface is a side surface opposite to the first side surface;

when the switch-on structure is at the limit position along the first direction, the rear end cover blocks the second end of the switch-on structure from abutting.

Optionally, the inner wall of the seat channel has a first annular abutting surface, the outer wall of the connecting structure has a second annular abutting surface,

when the switch-on structure is at the limit position along the second direction, the first annular butt-joint surface is in matched butt joint with the second annular butt-joint surface.

Optionally, at least one of the first annular butt joint surface and the second annular butt joint surface is a circular table top, the diameter of the first end of the circular table top is smaller than that of the second end of the circular table top, and the first end of the circular table top is the end, close to the air pipe, of the circular table top.

According to the utility model discloses a second aspect provides an atmospheric pressure control subassembly in plunger chamber is applied to library preparation system, including the atmospheric pressure control instrument to and the trachea plug connector that first aspect and alternative involved, the trachea plug connector passes through rear end intercommunication passageway with insert the trachea passageway the trachea communicate in between plunger chamber and the atmospheric pressure control instrument.

According to a third aspect of the present invention there is provided a library preparation system comprising a plunger cavity and a pneumatic pressure monitoring assembly for the plunger cavity according to the second aspect and its alternatives.

The utility model provides an among air pressure monitoring subassembly and the library preparation system in trachea plug-in connection, plunger chamber, through introducing for example clap the structure of clapping of box-like electro-magnet, usable claps the portion of closing and claps and touch the face of clapping of switch-on structure, and then, claps the portion of closing and claps and touch when clapping the face, can trigger the switch-on structure and loosen the trachea, need not the manual work and do specific operation to the switch-on structure to be convenient for tracheal quick extraction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a structure of a clapper portion of a trachea plug-in connector according to an embodiment of the present invention;

fig. 2 is a schematic view of a structure of a clapper portion of the trachea plug connector according to an embodiment of the present invention;

fig. 3 is a first schematic structural view of the air tube plug connector before the air tube is inserted into the air tube in an embodiment of the present invention;

fig. 4 is a schematic structural view of a trachea plug-in connector before a trachea is inserted in an embodiment of the invention;

fig. 5 is a first schematic structural view of the air tube plug-in connector after the air tube is inserted in an embodiment of the present invention;

fig. 6 is a schematic structural view of a trachea plug-in connector after a trachea is inserted in an embodiment of the invention;

fig. 7 is a first schematic structural view of the air tube plug connector when the air tube is pulled out according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of the air pipe plug-in connector when the air pipe is pulled out according to an embodiment of the present invention.

Description of reference numerals:

1-a switch-on configuration;

11-tracheal passage;

12-a rear end communication channel;

13-a through portion;

14-a transfer shaft;

15-a second annular abutment surface;

2-seat structure;

21-seat channel;

211-a first annular abutment surface;

22-a mounting seat;

23-a front end cap;

24-a rear end cap;

3-an elastic member;

4-clapping structure;

41-clapping part;

5-trachea.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a schematic view of a structure of a clapper portion of a trachea plug-in connector according to an embodiment of the present invention; fig. 2 is a schematic view of a structure of a clapping portion of the trachea plug according to an embodiment of the present invention.

Referring to fig. 1 and 2 in combination with other figures, the air pipe connector includes: a seat structure 2, a connecting structure 1, and a clap structure 4 having a clap portion 41 (fig. 1 and 2 only show the clap portion 41).

The first end of the connection structure 1 is provided with an air pipe channel 11 for inserting an air supply pipe along a first direction, the second end of the connection structure 1 is provided with a rear end communication channel 12, and the air pipe channel is mutually communicated with the rear end communication channel 12 of the connection structure 11;

the inner diameter of the tracheal passage 11 may be adapted to the outer diameter of the trachea 5, which may be understood as any manner of accommodating the insertion requirement of the trachea 5, and further, the inner diameter of the tracheal passage 11 may be, for example, the same as or slightly different from the outer diameter of the trachea 5. The inner diameter of the air pipe channel 11 can be configured at will according to air passage tightness, air pipe materials and the like, so that the air pipe channel can meet actual requirements.

A seat body channel 21 is arranged in the seat body structure 2, and the connection structure 1 is arranged in the seat body channel 21 in a penetrating manner; the connecting structure 1 can lock and unlock an air pipe inserted into the air pipe channel.

In one embodiment, the switch-on structure 1 is movable relative to the seat structure 2; further, the seat body channel 21 can have a certain limiting and guiding function on the movement of the communication structure 1. It can be seen that the housing structure 2 can be any structure having a housing channel 21. The embodiment of the present invention does not exclude the structure form that the connection structure 1 is fixedly connected to the seat channel 21 of the seat structure 2.

The embodiment of the utility model provides an in, clap the portion of closing and can switch between primary importance and second place, wherein:

when the clapping portion 41 is in the first position (as shown in fig. 2), the clapping portion 41 claps and touches the clapping surface of the connection structure 1 along the first direction, wherein the connection structure 1 (e.g. the through portion 13 thereof) can release the trachea inserted into the tracheal passage when the clapping surface is touched.

When the patting portion is in the second position (as shown in fig. 1), a gap is formed between the patting portion 41 and the patting surface along the first direction.

Wherein the clapper 41 is switched between the first position and the second position by a rotational motion and/or a translational motion. The scheme for realizing switching includes a scheme that switching can be realized by rotating a single stroke back and forth, a scheme that switching can be realized by translating a single stroke back and forth, a scheme that switching can be realized by rotating multiple strokes (for example, rotating at different amplitudes and different angles), a scheme that switching is realized by translating multiple strokes (for example, translating at different lengths and different directions), and a scheme that switching is realized by combining one or more stroke rotations and one or more stroke translations. No matter how the actions are, the scope of the embodiments of the present invention is not deviated.

In the above scheme, through introducing the clap structure, usable clap portion claps and merges and touch the face of clapping of switch-on structure, and then, claps the portion of clapping and merges and touch when clapping the face, can trigger the switch-on structure and loosen the trachea, need not artifical and do specific operation to the switch-on structure to be convenient for tracheal quick extraction.

In a specific example, the clapping structure 4 may be a clapping type electromagnet, and the clapping type electromagnet is installed on the seat structure 2. The movement of the clap portion 41 may be triggered by electromagnetic action.

Fig. 3 is a first schematic structural view of the air tube plug connector before the air tube is inserted into the air tube in an embodiment of the present invention; fig. 4 is a schematic structural view of a trachea plug-in connector before a trachea is inserted in an embodiment of the invention; fig. 5 is a first schematic structural view of the air tube plug-in connector after the air tube is inserted in an embodiment of the present invention; fig. 6 is a schematic structural view of a trachea plug-in connector after a trachea is inserted in an embodiment of the invention; fig. 7 is a first schematic structural view of the air tube plug connector when the air tube is pulled out according to an embodiment of the present invention; fig. 8 is a schematic structural diagram of the air pipe plug-in connector when the air pipe is pulled out according to an embodiment of the present invention.

Wherein the access structure may be configured to lock and unlock an airway inserted into the airway passage; which may be achieved through structural design of the components and/or selection of applications for existing components.

In one embodiment, please refer to fig. 3 to 8, the connection structure includes a through portion 13 and a connection shaft 14, the air pipe channel 11 is disposed at a first end of the through portion 13, a first end of the connection shaft 14 is connected to a second end of the through portion 13, the rear end connection channel 12 is disposed on the connection shaft 14, the through portion can lock and unlock an air pipe inserted into the air pipe channel, and the engagement surface is disposed on the through portion.

The engagement surface may be, for example, an end surface of the through portion that is far away from the spindle. In other schemes, the clapping surface may also be the surface of the clapping matching part arranged outside the connection structure 1 and facing to the trachea, as long as it can make the trachea loosened, without departing from the scope of the embodiment of the present invention.

Further, if the elastic member 3 described later is disposed, one end of the elastic member 3 may be directly or indirectly fixedly connected to the transfer shaft 14.

The through portion 13 can be connected to the transfer shaft 14 through a male thread, for example, so as to achieve a fixed connection between the through portion 13 and the transfer shaft 14, and therefore, the through portion 13 can also be understood as a threaded through portion.

Specifically, the through portion 13 may be a threaded through joint having a snap ring, which is a threaded through joint for quick connection, the snap ring may lock and release an air pipe inserted into the air pipe passage, and the snap surface is disposed on the snap ring. After the trachea is finally inserted, the trachea can be locked through the clamping ring, and meanwhile, when the clamping ring is touched, the locked trachea can be loosened.

In other examples, the connection between the through portion 13 and the adapter shaft 14 may be realized by other means (for example, by a latch, an external thread, a radial thread, etc.).

Specifically, the through portion 13 is further provided with a middle passage, one end of the middle passage is connected to the air pipe passage 11, and the other end of the middle passage is connected to the rear end communicating passage 12, so that the air pipe passage 11 and the rear end communicating passage 12 are communicated with each other. The inner diameter of the intermediate channel may be smaller than the tracheal channel 11, so that the trachea may generate a corresponding pushing force by pushing the end face of the tracheal channel 11.

In addition, the embodiment of the present invention does not exclude the through portion 13 and the transfer shaft 14 which are integrally formed.

In one embodiment, the switch-on structure 1 can move relatively to the seat structure 2, and the relative movement includes a movement along the first direction and a movement along a second direction, and the second direction is opposite to the first direction.

If the radial dimensions of the seat channels 21 in the connecting structure 1 and the seat structure 2 are matched, as shown in fig. 1 and fig. 2, the relative movement between the connecting structure 1 and the seat structure 2 may mainly include a movement in a first direction and a movement in a second direction; if the two dimensions do not match or do not match exactly, as shown in fig. 3-8, the relative movement of the two may also include movement in a direction perpendicular to the first direction.

Referring to fig. 3 to 8, in one embodiment, the target position of the access structure 1 can swing with the inserted trachea 5.

The movement of the air tube 5 and the whole of the connection structure 1 can be regarded as a swing movement or a rotation movement, and the amplitude, direction and the like of the movement of each part of the connection structure 1 can also change along with the change of the movement mode, amplitude, angle and the like of the air tube 5, so long as the air tube 5 can swing, the invention does not depart from the scope of the embodiment of the invention.

Therefore, in the above scheme, through the swing of the connection structure relative to the seat body structure, after the air pipe is inserted, the connection structure still has the floating degree of freedom, and further, through the floating of the connection structure along with the air pipe within a certain range, the connection structure can adapt to the position change of the air pipe, the clamping box is prevented from being clamped, and the withdrawing of the clamping box is effectively guaranteed.

In one embodiment, the switch-on structure is movable relative to the seat structure between the target position and a non-target position to facilitate insertion and/or removal of a trachea;

after the air pipe 5 is inserted into the air pipe channel 11 in a matching way, the switch-on structure 1 is at the target position;

when the air pipe 5 is not inserted into the air pipe channel 11 in a matching way, the switch-on structure 1 is in a non-target position;

wherein the movement of the contact structure 1 from the non-target position to the target position comprises a movement in the first direction, and correspondingly, the movement of the contact structure 1 from the non-target position to the target position comprises a movement in the second direction. Meanwhile, when the target position and the non-target position move, in addition to the movement in the first direction and the second direction, the movement perpendicular to the first direction and the second direction also occurs simultaneously.

The target position may be any single or multiple positions suitable for achieving the swing after insertion into the trachea, and the corresponding non-target position may be any single or multiple positions different from the target position, such as an extreme position of the switch-on structure moving in the second direction.

In the above scheme, since the floating is generated at the target position, the trachea can not be inserted when the communicating structure is at the target position through the movement of the communicating structure in the first direction and the second direction, and further the influence of the floating movement of the communicating structure on the trachea insertion is avoided.

Referring to fig. 3 to 8, in an embodiment, the air pipe plug connector further includes an elastic component 3, and the elastic component 3 is respectively connected to the seat structure 2 and the connection structure 1, wherein the elastic component 3 can provide an elastic acting force, and the elastic acting force is an acting force for driving the connection structure 1 to move along the second direction relative to the seat structure 2.

The elastic component 3 can be directly or indirectly connected with the first side of the seat body structure 2 where the air pipe is inserted, and further, the elastic acting force is generated after the elastic component 3 is compressed; in other examples, the elastic component 3 can also be directly or indirectly connected to a second side of the seat structure 2 opposite to the first side, and the elastic force can be generated by stretching the elastic component 3.

The elastic component 3 may be, for example, a return spring, and in other examples, the elastic component 3 may also be a torsion spring or other components capable of generating elastic force.

When the air pipe 5 is not inserted into the air pipe channel 1 in a matching manner, the elastic acting force acts on the connection structure 1, and the non-target position is an extreme position of the connection structure along the second direction. The limit position may be defined by the resilient member or by an annular abutment surface or other limiting structure as referred to hereinafter.

After the air pipe 5 is inserted into the air pipe channel 1 in a matching mode, both the elastic acting force and the pushing acting force act on the switch-on structure 1.

The pushing acting force is acting force of the air pipe acting on the switch-on structure along the first direction, can be acting on the end face of one side, far away from the air pipe, of the air pipe channel, can also be provided with a pushing part on the outer side of the air pipe, and then the pushing part is used for pushing the switch-on structure 1 to generate pushing acting force, and the pushing acting force can be achieved through a clamping ring.

In the above scheme, through elastomeric element, can provide the ascending elastic drive power of second direction, and then, when the trachea inserts, can guarantee tracheal stable insertion through the position of the firm switch-on structure of this elastic drive power.

In one embodiment, referring to fig. 3 to 8, the inner wall of the seat channel 21 has a first annular abutting surface 211, and the outer wall of the connecting structure 1 has a second annular abutting surface 15. In a specific example, the second annular abutment surface 15 may be, for example, an outer surface of an annular projection protruding from an outer wall of the switch-on structure 1.

In the extreme position of the switch-on configuration 1 in the second direction, which can be seen in fig. 4, the first annular abutment surface 211 is in mating abutment with the second annular abutment surface 15. The matching butt joint can be understood as that all the circumferential parts can realize butt joint. At this time, the first annular abutment surface 211 coincides with the axial center of the second annular abutment surface 15. If the connection structure 1 is not swingable, the axes may always be overlapped, and if the connection structure 1 is swingable, the axes may be overlapped when in mating and butting, and may not be overlapped when in unmating and butting.

When the switch-on structure 1 is not in the extreme position, the first annular abutment surface 211 and the second annular abutment surface 15 may be partially in contact or completely disengaged.

In the above scheme, the limit of the movement stroke of the connection structure can be realized by introducing the butt joint surface and the matching butt joint between the first annular butt joint surface and the second annular butt joint surface when the connection structure is at the limit position.

In a further example, at least one of the first annular abutting surface and the second annular abutting surface is a circular table top, a diameter of a first end of the circular table top is smaller than a diameter of a second end of the circular table top, and the first end of the circular table top is an end of the circular table top close to the air pipe.

If the connecting structure 1 is swingable relative to the base structure 2, when the connecting structure 1 is not at the limit position along the second direction, the axes of the first annular abutting surface 211 and the second annular abutting surface 15 are not coincident, for example, may be parallel but not coincident, or may not be parallel. As shown in fig. 6, the connecting structure 1 can be supported on the seat body channel 21, and the upper side of the connecting structure 1 can form a gap with the seat body channel 21 and the first annular abutting surface 211 thereof.

Therefore, at least one of the butt joint surfaces adopts the circular table surface, and the axes of the annular butt joint surfaces coincide when the butt joint surfaces are matched and butted, the axial movement of the connecting structure can bring the positioning of the radial position, and further, the central position of the connecting structure can be uniquely determined, so that the insertion of the trachea is facilitated.

In one embodiment, the number of the second annular abutting surfaces 15 and the number of the first annular abutting surfaces 211 are at least two, and at least two first annular abutting surfaces 211 are in one-to-one correspondence with at least two second annular abutting surfaces 15, at least two second annular abutting surfaces 211 are sequentially distributed along the first direction, and correspondingly, at least two first annular abutting surfaces 15 are also sequentially distributed along the first direction.

In the example shown in fig. 4 and 6, one of the second annular abutment surfaces 15 can be disposed at the second end of the connecting structure 1, and can be moved away from the seat channel 21 in the second direction, so that the maximum radial dimension thereof is not limited by the seat channel 21.

In the example shown in fig. 4 and 6, the number of the second annular abutment surfaces 15 and the number of the first annular abutment surfaces 211 are both two. In addition to the second annular abutment surface 15 provided at the second end of the switch-on structure 1, another second annular abutment surface 15 may be provided at a position other than the second end (e.g. may be provided at a position near the midpoint of the transfer shaft 14).

If the first annular abutting surface 211 and the second annular abutting surface 15 are both circular truncated cones, and the radial dimension of the tube wall of the inner wall of the seat body channel 21 except the first annular abutting surface 211 is understood as the radial dimension of the channel, then:

the maximum radial dimension of the second annular abutment surface 15 provided at the second end of the switch-on structure 1 is greater than the radial dimension of the channel; the maximum radial dimension of the second annular abutment surface 15 (or, as can be understood, the second annular abutment surface 15 that is within the seat body passage 21) provided at the non-second end is less than the passage radial dimension.

In one embodiment, referring to fig. 3 to 8, the seat structure 2 includes a mounting seat 22, a front cover 23 and a rear cover 24; the front end cover 23 is mounted on a first side surface of the mounting seat 22, the rear end cover 24 is mounted on a second side surface of the mounting seat 22, the first side surface is a side surface facing one side of the air pipe, and the second side surface is a side surface opposite to the first side surface; if the elastic member 3 is disposed, the first end of the elastic member 3 is directly or indirectly fixedly connected to the front end cover 23.

The seat body channel 21 comprises a channel body arranged on the mounting seat and a front end cover channel arranged on the front end cover, wherein one first annular butt joint surface 211 is arranged on the front end cover channel; in the example shown in fig. 4, the inner wall of the front cover channel may form an entire first annular abutment surface 211, in other examples, the front cover channel may be combined with the channel body to form the first annular abutment surface 211, and the inner wall of the front cover channel may be configured to be only partially the first annular abutment surface 211.

When the switch-on structure is at the limit position along the first direction, the rear end cover blocks the second end of the switch-on structure from abutting. It can be seen that the travel of the switch-on structure 1 in the first and second directions is limited between two limit positions by the rear end cap 24 and the abutment surface.

Taking the structure shown in fig. 3 to 8 as an example, the insertion and extraction processes of the trachea will be explained below.

Referring to fig. 3 and 4, when the trachea 5 is not inserted, the clapper 41 is in the second position, the connection structure 1 moves to the limit position under the driving force of the elastic component 3 and the action of the annular butt joint surface, and at this time, the elastic component 3 (such as a return spring) is in a natural state, and the central position of the connection structure is uniquely determined due to the action of the circular table surface in the annular butt joint surface, so that the trachea can be conveniently inserted.

Referring to fig. 5 and 6, after the air tube 5 is inserted, the air tube 5 is filled into the air tube channel 11, and the inner cavity of the air tube 5 can be communicated with the rear end communication channel, and further communicated with other devices through the rear end communication channel.

Referring to fig. 7 and 8, when the trachea 5 needs to be pulled out, the clapper 41 can be controlled to reach the first position, the clapper 41 can block the first end of the connection structure 1, at this time, when the trachea 5 is pulled out, the connection structure 1 cannot move along with the connection structure 1 due to the friction force between the trachea and the connection structure 1, and further, the trachea 5 can be conveniently pulled out by the structure.

It can be seen that, during the above insertion and extraction processes:

through the cooperation of the rotary shaft and the round table surface on the front end cover and the mounting seat, and the action of an elastic component (such as a return spring), the following positive effects can be realized:

1) when the elastic component is in a natural state, the center position of the connection structure 1 is determined and unique, so that the trachea can be conveniently inserted;

2) after the trachea is inserted, the connecting structure 1 can float in a certain range to adapt to the position of the trachea. This effect is especially important when the trachea is the stereoplasm material, is being applied to the gas circuit connection between atmospheric pressure monitoring instrument and the card box plunger chamber, then can effectively prevent the card box card that the trachea card is dead to lead to from dying and can't pop out.

Furthermore, the embodiment of the present invention provides a solution that can be applied to a scene in which the air pipe is made of hard material, but does not exclude an application scene in which the air pipe is a hose.

The embodiment of the utility model provides an in, still provide an atmospheric pressure control subassembly in plunger chamber, be applied to library preparation system, including the atmospheric pressure monitoring instrument to and the trachea plug-in connection that above alternative relates, the trachea plug-in connection passes through rear end intercommunication passageway with insert the trachea passageway the trachea communicate in between plunger chamber and the atmospheric pressure monitoring instrument.

In the prior art, in a library preparation system, the conventional card box pipetting mainly depends on the reciprocating motion of a plunger in a plunger cavity to realize the pumping action of liquid, and because the plunger cavity has the influence of the draft, the material and the size of a sealing ring and other factors on the sealing effect, the problem of gas leakage exists between the plunger and the plunger cavity, and the pipetting precision is seriously influenced.

In order to promote and move liquid precision, the embodiment of the utility model provides a think of atmospheric pressure that can real time monitoring plunger intracavity. To this demand, can introduce the embodiment of the utility model provides a trachea plug connector realizes quick plug to establish the gas circuit between instrument and card box inner plunger chamber and be connected, and this gas circuit connection can establish rapidly and break off.

The card box can be specifically referred to a closed sequencing library preparation card box, and can be used for providing a closed environment and realizing the suction, addition and liquid transfer of reaction reagents and samples in the closed environment. The plunger chamber referred to above is the configuration required for use in pipetting.

In a specific example, the air pipe plug connector can be connected with the plunger cavity through the inserted air pipe, and at the moment, the rear end communication channel can be communicated with the air pressure monitoring instrument.

The embodiment of the utility model provides a library preparation system is still provided, including the plunger chamber and the atmospheric pressure monitoring subassembly in the plunger chamber that above alternative is related.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (12)

1. A trachea plug-in connection, comprising: the base structure, the connecting structure and the clapping structure with the clapping part;

the first end of the communicating structure is provided with an air pipe channel for inserting an air supply pipe along a first direction, the second end of the communicating structure is provided with a rear end communicating channel, and the air pipe channel is communicated with the rear end communicating channel; a seat body channel is arranged in the seat body structure, and the connection structure is arranged in the seat body channel in a penetrating manner; the connecting structure can lock and unlock an air pipe inserted into the air pipe channel;

the clap portion can switch between first position and second position, wherein:

when the clapping part is positioned at the first position, the clapping part claps and touches the clapping surface of the switch-on structure along the first direction; the connecting structure can release an air pipe inserted into the air pipe channel when the clapping surface is triggered;

when the patting part is located at the second position, a gap is formed between the patting part and the patting surface along the first direction.

2. An airway plug according to claim 1 wherein the clapper is switchable between the first and second positions by a rotational and/or translational action.

3. The air pipe connector as claimed in claim 2, wherein the clapper structure is a clapper electromagnet mounted to the base structure.

4. The trachea plug connector of claim 1, wherein the connection structure comprises a through portion and a switching shaft, the trachea channel is arranged at a first end of the through portion, a first end of the switching shaft is connected with a second end of the through portion, the rear end communication channel is arranged at the switching shaft, the through portion can lock and unlock a trachea inserted into the trachea channel, and the engagement surface is arranged at the through portion.

5. The trachea cannula joint of claim 4 wherein the feedthrough is a threaded feedthrough having a snap ring that can lock and unlock a trachea inserted into the trachea channel, the snap surface being provided on the snap ring.

6. The air pipe connector as claimed in any one of claims 1 to 5, wherein the switch-on structure is capable of relative movement with respect to the seat structure, and the relative movement includes movement in the first direction and movement in a second direction, the second direction being opposite to the first direction.

7. The air pipe plug connector according to claim 6, further comprising an elastic member respectively connecting the seat structure and the connection structure, wherein the elastic member is capable of providing an elastic force, the elastic force being a force for driving the connection structure to move in the second direction relative to the seat structure.

8. The air pipe plug connector according to claim 6, wherein the seat structure comprises a mounting seat, a front end cap and a rear end cap; the front end cover is arranged on a first side surface of the mounting seat, the rear end cover is arranged on a second side surface of the mounting seat, the first side surface is a side surface facing one side of the air pipe, and the second side surface is a side surface opposite to the first side surface;

when the switch-on structure is at the limit position along the first direction, the rear end cover blocks the second end of the switch-on structure from abutting.

9. An air pipe connector as defined in claim 6 wherein the inner wall of said housing passageway has a first annular abutment surface and the outer wall of said access structure has a second annular abutment surface,

when the switch-on structure is at the limit position along the second direction, the first annular butt-joint surface is in matched butt joint with the second annular butt-joint surface.

10. The air pipe plug connector according to claim 9, wherein at least one of the first annular abutting surface and the second annular abutting surface is a circular table surface, a first end of the circular table surface has a smaller diameter than a second end of the circular table surface, and the first end of the circular table surface is an end of the circular table surface close to the air pipe.

11. An air pressure monitoring assembly of a plunger cavity, applied to a library preparation system, characterized by comprising an air pressure monitoring instrument and the air pipe plug connector of any one of claims 1 to 10, wherein the air pipe plug connector is communicated between the plunger cavity and the air pressure monitoring instrument through the rear end communication channel and the air pipe inserted into the air pipe channel.

12. A library preparation system comprising a plunger chamber and a pneumatic monitoring assembly of the plunger chamber of claim 11.

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