CN218674293U

CN218674293U - Closed cavity for vacuumizing sampling tube

Info

Publication number: CN218674293U
Application number: CN202223147920.5U
Authority: CN
Inventors: 王伟伟; 潘定辉
Original assignee: Shanghai Aoxiang Medical Technology Co ltd
Current assignee: Shanghai Aoxiang Medical Technology Co ltd
Priority date: 2022-11-27
Filing date: 2022-11-27
Publication date: 2023-03-21
Anticipated expiration: 2032-11-27

Abstract

The utility model discloses a sampling tube is airtight chamber for evacuation, belong to airtight chamber equipment field, install the upper end including airtight chamber device and promote the subassembly and reciprocate the gland board in the cavity, gland board's removal is realized pressing the skull, the ring flange on the fixed subassembly is connected to the promotion piston through floating the joint, the central point that the ring flange passes through bolt installation to be fixed at the cavity upper surface puts, through the upper and lower displacement that reciprocates drive ring flange and cavity that promotes the piston, realize multiunit sampling tube evacuation simultaneously, the ring flange promotes the piston through floating the articulate simultaneously and reciprocates the cavity of opening and shutting and is convenient for the sampling tube layer board to remove the production batch operation that forms automatic assembly line, the design of fixed subassembly makes the removal of cavity better steady, the efficiency of production vacuum sampling tube has been improved, structural design on gland board and the fixed plate in the promotion subassembly has improved the success rate of gland, the efficiency of production vacuum sampling tube has been improved.

Description

Closed cavity for vacuumizing sampling tube

Technical Field

The utility model belongs to airtight chamber equipment field, more specifically relates to a sampling tube is airtight chamber for evacuation.

Background

The principle of the vacuum sampling tube is that a sampling tube test tube with a head cover is pre-pumped into different vacuum degrees, a gas sample is automatically and quantitatively collected by utilizing the negative pressure of the sampling tube, the sampled gas enters the sampling tube to be collected under the action of the negative pressure, however, a closed space is provided for vacuumizing by a closed cavity, and the movable gland plate in the closed cavity presses the head cover of the sampling tube to finish the vacuumizing of the sampling tube.

The existing sealed cavity is of a box structure, a cabinet door capable of being opened and closed is designed on the side face of the existing sealed cavity, a sampling tube bracket placed in the box is taken through a switch of the cabinet door, a plurality of groups of sampling tubes are placed on the sampling tube bracket, the cabinet door is closed to achieve the sealing performance in the sealed cavity, then the inside of the sealed cavity is vacuumized through a vacuum pump communication pipeline, but in the process of pressing the head cover, because some head covers are not placed in the middle, the pressing cover plate is unstable in movement, self-deformation and unevenness are other factors, the head cover can be biased in the pressing process, the success rate of sealing the sampling tube by the head cover is low,

influence production efficiency, the structure of current airtight chamber cubical switchboard door can not be suitable for modern high-speed automatic production simultaneously, and the efficiency of production vacuum sampling pipe can not fully improve.

Through the retrieval, the name that utility model created is: an evacuating device (application number: 201120318429.7, application publication date: 2011.08.29). This application discloses an evacuating device, air exhaust mechanism and vacuum vessel, air exhaust mechanism install on vacuum vessel's extraction opening, be provided with the gland plate that can reciprocate among the vacuum vessel, gland plate passes through the connecting rod and is connected with the outside flexible power unit of vacuum vessel, and vacuum vessel middling pressure apron's below is provided with the layer board that is used for laying the vacuum bottle, be provided with the card hole that is used for fixed vacuum bottle on the layer board, this vacuum vessel has improved efficiency with the multiunit vacuum bottle evacuation on a set of tray relatively, but every puts a set of tray and all will open the cabinet door layer board of taking repeatedly, can not be suitable for automatic production, and efficiency fails to fully improve.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model discloses an in-process that the lid clamp plate in solving airtight chamber pressed at the skull causes the skull biasing easily, and the success rate that causes the sealed sampling pipe of skull is lower, influences production efficiency, and the structure of airtight chamber cubical switchboard door can not be suitable for modern high-speed automatic production, and the efficiency of production vacuum sampling pipe fails fully to improve.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a closed chamber is used in sampling tube evacuation, install the upper end including closed chamber device and promote the subassembly and reciprocate to the gland plate in the cavity, gland plate's removal is realized pressing the head cover, the appearance of cavity is rectangle box structure, its side-mounting has the stopper, its lower terminal surface design is for covering sampling tube supporting plate subassembly for the opening, its lower extreme edge design has sealed recess to be used for the sealed cushion of installation, its up end installs fixed subassembly and pressure differential switch, the ring flange on the fixed subassembly is connected to the promotion piston through floating joint, the central point that the ring flange passes through the bolt installation to be fixed at the cavity upper surface puts, through the upper and lower displacement that reciprocates drive ring flange and cavity that promotes the piston.

Preferably, the front side surface and the rear side surface of the cavity are symmetrically provided with observation windows, the left side surface and the right side surface of the cavity are symmetrically provided with bent pipes, and the upper end surface of the cavity is provided with a fixing screw hole and a fixing hole.

Preferably, the pushing cylinder on the pushing assembly is connected to the fixed plate in the cavity through the press plug connector, mounting holes are formed in four corners of the pushing cylinder, the side face of the pushing cylinder is provided with a cylinder connector, the mounting holes correspond to the positions of the fixed screw holes in the cavity, and a sealing rubber ring is arranged at the connecting position of the pushing cylinder and the cavity.

Preferably, the design has the multiunit semicircle arch of array on the gland board, and it is installed on the fixed plate, and the design has the threaded holes of two sets of symmetries and the bar groove of multiunit array on the fixed plate, and the threaded holes passes through bolted connection tamponade joint, and the bellied position of semicircle is corresponding with the locating position of sampling pipe.

Preferably, the guide pillar base on the fixing assembly is mounted at four corners of the upper end face of the cavity through fixing holes, and the guide pillar base is used for mounting a guide pillar.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) The utility model discloses a sampling tube is airtight chamber for evacuation realizes multiunit sampling tube evacuation simultaneously, and the ring flange promotes the piston through unsteady articulate simultaneously and reciprocates the cavity of opening and shutting and is convenient for the sampling tube layer board and removes the production batch operation that forms automatic assembly line, and the design of fixed subassembly makes the removal of cavity better steady, has improved the efficiency of production vacuum sampling tube.

(2) The utility model discloses a sampling tube is airtight chamber for evacuation promotes the structural design on gland plate and the fixed plate in the subassembly and has improved the success rate of gland, has improved the efficiency of production vacuum sampling tube.

Drawings

Fig. 1 is the overall structure schematic diagram of the airtight cavity for vacuumizing the sampling tube of the utility model.

Fig. 2 is the schematic diagram of the cavity structure of the airtight cavity for evacuating the sampling tube of the present invention.

Fig. 3 is the schematic structural diagram of the pushing assembly of the airtight cavity for vacuumizing the sampling tube of the present invention.

Fig. 4 is the schematic diagram of the gland plate structure of the closed cavity for vacuumizing the sampling tube of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a closed cavity device; 110. a cavity; 120. a stopper; 130. sealing the groove; 140. a differential pressure switch; 150. an observation window; 160. bending the pipe; 170. fixing screw holes; 180. a fixing hole;

200. a pushing assembly; 210. a push cylinder; 211. mounting holes; 212. a cylinder joint; 220. a plug connector is pressed; 230. sealing the rubber ring; 240. pressing a cover plate; 241. a semicircular bulge; 250. a fixing plate; 251. a threaded hole; 252. a strip-shaped groove;

300. a fixing component; 310. a guide post base; 320. a flange plate; 330. a floating joint.

Detailed Description

In order to facilitate understanding of the invention, the invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and are not limited to the embodiments described herein, but which are provided so as to render the disclosure of the invention more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1-4, a closed cavity for vacuum pumping of a sampling tube is disclosed, which comprises a pushing assembly 200 mounted at the upper end of a closed cavity device 100 for moving a gland plate 240 in a cavity 110 up and down, the gland plate 240 moving to press the cap, the cavity 110 being a rectangular box structure, a stopper 120 mounted at the side thereof, a sealing groove 130 formed at the lower end thereof for mounting a sealing rubber gasket, a fixing assembly 300 and a pressure difference switch 140 mounted at the upper end thereof, a flange 320 on the fixing assembly 300 being connected to a pushing piston through a floating joint 330, the flange 320 being mounted and fixed at the center of the upper surface of the cavity 110 by bolts, the flange 320 and the cavity 110 moving up and down by the pushing piston, the pushing piston being connected to the floating joint 330, the floating joint 330 is connected to the flange 320, the flange 320 is fixedly connected with the cavity 110, the cavity 110 moves downwards due to the pushing of the pushing piston, the height value of the descending of the cavity 110 is controlled by the limiter 120, the pushing piston stops pushing, a sealing rubber gasket is arranged in a sealing groove 130 of the cavity 110 and is attached to a supporting surface at the bottom of the sampling tube supporting plate, the sealing performance of vacuum extraction is achieved in the cavity 110, a vacuumizing machine is connected to the two side bent pipes 160 to vacuumize the cavity 110, the precision of the vacuum extraction is controlled by the pressure difference switch 140, the pushing cylinder 210 in the pushing assembly 200 extends out, the pressing cover plate 240 is pushed to press the head cover on the sampling tube supporting plate, the sampling tube is pressed and sealed, the negative pressure in the cavity 110 is released again through the bent pipe 160, at the moment, the pushing piston moves upwards, the cavity 110 is opened, the internal sampling tube supporting plate is moved out through mechanical clamping, the cavity 110 is connected to ring flange 320 makes the removal process more stable, unsteady joint 330 can play and reduce the error, protect relevant parts, maintain equipment even running, make cavity 110 reciprocate through the connection of ring flange 320 and unsteady joint 330, cavity 110 that reciprocates is equipped with opening and sealed recess 130 and covers the whole airtight space that forms of sampling tube layer board owing to the terminal surface down, return bend 160 carries out evacuation in the cavity 110, realize that multiunit sampling tube evacuation simultaneously, it opens and shuts the production batch operation of cavity 110 automated assembly line of being convenient for to reciprocate simultaneously, the efficiency of production vacuum sampling tube has been improved.

The front side and the back side of the cavity 110 of this embodiment are symmetrically designed with the observation windows 150, the left side and the right side of the cavity are symmetrically installed with the bent tubes 160, the upper end surface of the cavity is designed with the fixing screw holes 170 and the fixing holes 180, the fixing screw holes 170 are designed to fix the pushing cylinders 210 on the upper end surface of the cavity 110, the fixing holes 180 are designed to fix the guide pillar bases 310 at the four corners of the upper end surface of the cavity 110, the observation windows 150 are designed to observe the vacuum pumping and pressing conditions in the cavity 110 in time, so that the emergency and timely treatment can be conveniently performed, the bent tubes 160 are designed to be symmetrical so that the bent tubes 160 on one side are connected with a vacuum extractor to vacuum the cavity 110, after the vacuum pumping is finished, the bent tubes 160 on the other side can release the negative pressure in the cavity 110 to facilitate the pushing of the piston to open and close the cavity 110 quickly, and the production efficiency is improved.

The pushing cylinder 210 on the pushing assembly 200 of this embodiment is connected to the fixing plate 250 in the cavity 110 through the plunger joint 220, the mounting holes 211 are designed at four corners of the pushing cylinder 210, the cylinder joint 212 is designed at a side surface of the pushing cylinder, the mounting holes 211 correspond to the fixing screw holes 170 on the cavity 110 in position, and the sealing rubber ring 230 is installed at a joint of the pushing cylinder 210 and the cavity 110, according to the design of the structure, the cylinder joint 212 is connected to the scavenging valve, the piston in the pushing cylinder 210 moves up and down through the difference of air intake directions, the output end of the pushing cylinder 210 is connected to the plunger joint 220, the plunger joint 220 is connected to the fixing plate 250 through the screw hole 251, so the moving of the pushing cylinder 210 can drive the fixing plate 250 to move up and down, the fixing plate 250 presses the head cap, the positions of the mounting holes 211 and the fixing screw holes 170 on the cavity 110 correspond to fix the pushing cylinder 210 through the long bolt, the sealing rubber ring 230 is designed to improve the vacuum-pumping efficiency in the cavity 110, and the vacuum-pumping of the head cap in the cavity 110 is realized after the vacuum-pumping, and the sealing of the sampling tube is completed.

The design of the multiunit semicircle that has the array on gland plate 240 of this embodiment, it installs on fixed plate 250, the design has the screw hole 251 of two sets of symmetries and the bar recess 252 of multiunit array on fixed plate 250, screw hole 251 passes through bolted connection tucking joint 220, the position of semicircle arch 241 corresponds with the locating position of sampling tube, the design of this structure, the design of semicircle arch 241 is in order to press down the lid at gland plate 240, semicircle arch 241 inserts the circular recess on the lid, tentatively fix a position the lid, continue descending along with pressing, the position of lid and gland plate 240 laminating realization lid is just, it is more accurate to pressing the lid sealing position, the success rate of pressing the lid has been improved, the design of bar recess 252 is in order to prevent gland plate 240 at the in-process of evacuation to warp, because gland plate 240 requires higher to the roughness of installation, so the laminating degree between gland plate 240 and fixed plate 250 is higher, if not designing bar recess 252 and exporting the air that the department of laminating can lead to press 240 and warp, cause the reduction to the gland plate, two sets of symmetrical screw hole 251 is connected to push up and smooth and makes the gland plate 240, thereby the success rate of the success of the production of sampling tube improves the success rate of the vacuum production of gland plate 240.

Guide pillar base 310 on the fixed subassembly 300 of this embodiment passes through fixed orifices 180 and installs the up end four corners department at cavity 110, guide pillar base 310 is used for installing the guide pillar, the design of this structure, install the guide pillar in the guide pillar base 310, the four corners that the guide pillar is located cavity 110 is the better cavity 110 stability of in-process in order to promote the piston to reciprocate cavity 110, cavity 110 rocks when having prevented to descend and causes the leakproofness of the sealed cushion laminating holding surface in the sealed recess 130, the efficiency of evacuation has been reduced, influence production efficiency.

The above-mentioned embodiments only express a certain implementation manner of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a closed chamber is used in sampling tube evacuation which characterized in that: install the upper end including airtight chamber device (100) and promote subassembly (200) and reciprocate gland board (240) in to cavity (110), the removal of gland board (240) is realized pressing the skull, the appearance of cavity (110) is rectangle box structure, and its side-mounting has stopper (120), and its lower terminal surface design is used for covering the sampling tube bracket subassembly for the opening, and its lower extreme edge design has sealed recess (130) to be used for the installation to seal the cushion, and its up end installs fixed subassembly (300) and differential pressure switch (140), ring flange (320) on fixed subassembly (300) are connected to the promotion piston through floating joint (330), ring flange (320) are put at the central point of cavity (110) upper surface through the bolt erection, drive ring flange (320) and the upper and lower displacement of cavity (110) through the reciprocating of promotion piston.

2. The sealed cavity for evacuating a sampling tube as claimed in claim 1, wherein: the front side surface and the rear side surface of the cavity (110) are symmetrically provided with observation windows (150), the left side surface and the right side surface of the cavity are symmetrically provided with bent pipes (160), and the upper end surface of the cavity is provided with a fixing screw hole (170) and a fixing hole (180).

3. The sealed cavity for evacuating a sampling tube as claimed in claim 1, wherein: push away on the subassembly (200) push cylinder (210) and connect (220) through the tamponade and be connected to fixed plate (250) in cavity (110), push cylinder (210) four corners department design has mounting hole (211), and its side design has cylinder joint (212), the position of fixed screw hole (170) on mounting hole (211) and the cavity (110) is corresponding, push cylinder (210) and cavity (110) junction installs sealed rubber ring (230).

4. The sealed cavity for evacuating a sampling tube as claimed in claim 1, wherein: the sampling tube pressing device is characterized in that a plurality of groups of semicircular bulges (241) of arrays are designed on the pressing cover plate (240) and are installed on the fixing plate (250), two groups of symmetrical threaded holes (251) and a plurality of groups of arrayed strip-shaped grooves (252) are designed on the fixing plate (250), the threaded holes (251) are connected with the pressing plug connector (220) through bolts, and the positions of the semicircular bulges (241) correspond to the placing positions of the sampling tubes.

5. The sealed cavity for evacuating a sampling tube as claimed in claim 1, wherein: the guide post base (310) on the fixing component (300) is installed at the four corners of the upper end face of the cavity (110) through the fixing holes (180), and the guide post base (310) is used for installing guide posts.