CN116539502B - Plug connector of sample tube and specific surface area instrument - Google Patents
Plug connector of sample tube and specific surface area instrument Download PDFInfo
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- CN116539502B CN116539502B CN202310816430.XA CN202310816430A CN116539502B CN 116539502 B CN116539502 B CN 116539502B CN 202310816430 A CN202310816430 A CN 202310816430A CN 116539502 B CN116539502 B CN 116539502B
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- sample tube
- connector
- cavity
- pressing plate
- floating
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- 238000003825 pressing Methods 0.000 claims abstract description 172
- 238000007789 sealing Methods 0.000 claims abstract description 73
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007667 floating Methods 0.000 claims description 79
- 238000009434 installation Methods 0.000 abstract description 9
- 239000002184 metal Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a plug connector of a sample tube and a specific surface area instrument, wherein the plug connector of the sample tube comprises: the connector comprises a connector body, a mounting block and a sample tube, wherein the connector body is suitable for being connected with the mounting block, an inserting cavity for inserting the sample tube is formed in the connector body, the inserting cavity is suitable for being communicated with a hollow cavity of the mounting block, and the sample tube is suitable for penetrating through the inserting cavity and extending into the hollow cavity; the elastic sealing piece is positioned in the inserting cavity and sleeved outside the sample tube; the pressing structure is movably mounted on the joint body and is suitable for pushing the elastic sealing piece to press the sample tube when moving relative to the joint body. The plug connector of the sample tube can realize the installation and the disassembly of the sample tube, has simple structure, shortens the steps and the time of the installation and the disassembly, improves the experimental efficiency, and has good sealing performance so as to ensure that the gas in the sample tube cannot leak.
Description
Technical Field
The invention relates to the technical field of gas adsorption industry, in particular to a plug connector of a sample tube and a specific surface area instrument with the plug connector of the sample tube.
Background
In the gas adsorption industry, when the specific surface area of a sample is measured, a quartz glass sample tube is required to be used for containing the sample to be measured. The quartz glass sample tube is required to be installed and fixed on a metal part of equipment by a connector, and the quartz glass tube is taken down after the test is finished, so that the connector structure is required to be easily disassembled and assembled, the tightness is good, and the gas in the quartz glass tube is ensured not to leak.
In the prior art, the following problems exist: 1. the sample tube clamping sleeve joint has complex structure, more parts and more complex processing and assembly; 2. the sample tube is complex in mounting and dismounting process, more in steps, time-consuming, labor-consuming and low in efficiency; 3. the control of the degree of compaction of the sample tube sealing ring each time is not accurate enough, the error is larger, and the sealing effect is difficult to ensure, so that there is room for improvement.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the plug connector of the sample tube, which has a simple structure, can facilitate the installation and the disassembly of the sample tube, shortens the time for the installation and the disassembly, and has good sealing effect so as to ensure that the gas in the sample tube cannot leak.
The plug connector of the sample tube according to the embodiment of the invention comprises: the connector comprises a connector body, a mounting block and a sample tube, wherein the connector body is suitable for being connected with the mounting block, an inserting cavity for inserting the sample tube is formed in the connector body, the inserting cavity is suitable for being communicated with a hollow cavity of the mounting block, and the sample tube is suitable for penetrating through the inserting cavity and extending into the hollow cavity; the elastic sealing piece is positioned in the inserting cavity and sleeved outside the sample tube; the pressing structure is movably mounted on the joint body and is suitable for pushing the elastic sealing piece to press the sample tube when moving relative to the joint body.
According to the plug connector of the sample tube, disclosed by the embodiment of the invention, the sample tube can be installed and disassembled through the matched use of the connector body, the elastic sealing piece and the pressing structure, the structure is simple, the steps and the time for installing and disassembling are shortened, the experimental efficiency is improved, and the sealing performance is good, so that the gas in the sample tube can not leak.
According to the plug connector of the sample tube, the pressing structure comprises a pressing piece and a floating pressing plate, the pressing piece and the floating pressing plate are respectively movably installed in the connector body, the floating pressing plate is located in the plug cavity, at least part of the pressing piece is located outside the connector body, and the pressing piece is used for driving the floating pressing plate to press the elastic sealing piece.
According to the plug connector of the sample tube, the floating pressing plate is movably arranged in the plug cavity along a first direction, the pressing piece is movably arranged in the connector body along a second direction, and the first direction is intersected with the second direction.
According to the plug connector of the sample tube, the first direction extends along the axial direction of the sample tube, and the second direction extends along the radial direction of the sample tube.
According to the plug connector of the sample tube, the pressing piece is provided with a driving boss, the floating pressing plate is provided with a driven boss, and the driving boss is in pressing contact with the driven boss in an inclined plane so as to push the floating pressing plate to move along the first direction when the pressing piece moves along the second direction.
According to the plug connector of the sample tube, according to some embodiments of the present invention, the floating pressing plate is configured to be annular and sleeved outside the sample tube, one axial end of the floating pressing plate abuts against the elastic sealing element, and the other axial end abuts against the pressing element.
According to the plug connector of the sample tube, the connector body is further provided with a movable cavity, the movable cavity is arranged around the plug cavity and is communicated with the plug cavity, and the pressing piece is movably arranged in the movable cavity and is sleeved outside the sample tube.
According to the plug connector of the sample tube, the connector body comprises an upper connector side and a lower connector side, the upper connector side and the lower connector side are detachably connected, the plug cavity penetrates through the upper connector side and the lower connector side, and the movable cavity is formed between the upper connector side and the lower connector side.
According to the plug connector of the sample tube, the inner diameter of the plug cavity is larger than that of the hollow cavity, the elastic sealing piece is propped between the floating pressing plate and the mounting block, and the elastic sealing piece presses the sample tube inwards in the radial direction and presses the bottom wall of the mounting block, which is positioned outside the hollow cavity, upwards in the axial direction when being pressed by the floating pressing plate.
The invention also provides a specific surface area instrument.
The specific surface area instrument provided by the embodiment of the invention comprises the mounting block, the sample tube and the plug connector of the sample tube of any embodiment, wherein the sample tube is detachably mounted on the mounting block through the plug connector.
The specific surface area instrument and the plug connector of the sample tube have the same advantages compared with the prior art, and are not described in detail herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of a specific surface area instrument according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a specific surface area instrument according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a specific surface area instrument according to an embodiment of the invention;
FIG. 4 is a schematic view of the construction of a plug connector, sample tube and metal capillary mounting according to an embodiment of the invention;
FIG. 5 is a schematic illustration of a partial structure of a plug connector, sample tube and metal capillary mounting according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a partial structure of a plug connector, sample tube and metal capillary mounting according to an embodiment of the invention;
fig. 7 is a schematic view of a part of the construction of a plug connector, sample tube and metal capillary mounting according to an embodiment of the invention.
Reference numerals:
the specific surface area instrument 100,
plug connector 1, connector body 11, plug cavity 111, elastic seal 12, pressing structure 13, pressing piece 131, driving boss 1311, movable space 1312, floating pressing plate 132, driven boss 1321, connector upper side 14, connector lower side 15,
the device comprises a mounting block 2, a hollow cavity 21, a sample tube 3, a metal capillary 4 and a clamping sleeve joint 5.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The following describes the plug connector 1 of the sample tube according to the embodiment of the present invention with reference to fig. 1 to 7, by pressing the pressing structure 13, the elastic sealing member 12 can be pushed to press the sample tube 3, so that the sample tube 3 can be mounted and sealed, and the structure is simple, the operation is convenient, and the sealing effect is good.
As shown in fig. 1 to 7, a plug connector 1 of a sample tube according to an embodiment of the present invention includes: the joint body 11, the elastic seal 12 and the pressing structure 13.
The joint body 11 is suitable for being connected with the mounting block 2, i.e. the joint body 11 can be fixedly connected with the mounting block 2, or the joint body 11 can be detachably connected with the mounting block 2, and the joint body 11 and the mounting block 2 can be fixedly connected.
Wherein, the connector body 11 is internally provided with a plug cavity 111 for plugging the sample tube 3, the plug cavity 111 is suitable for being communicated with the hollow cavity 21 of the mounting block 2, and the sample tube 3 is suitable for penetrating the plug cavity 111 and extending into the hollow cavity 21. In practical design, the plugging cavity 111 can be set as an open type, and the plugging cavity 111 penetrates through the connector body 11, wherein the hollow cavity 21 is arranged in the mounting block 2, the hollow cavity 21 of the mounting block 2 can be used for plugging the metal capillary 4, namely, after the connector body 11 is connected with the mounting block 2, the plugging cavity 111 is communicated with the hollow cavity 21 of the mounting block 2, at the moment, the sample tube 3 can penetrate through the plugging cavity 111 to extend into the hollow cavity 21 to be connected with the metal capillary 4, and the communication between the sample tube 3 and the metal capillary 4 can be realized, so that the plugging cavity 111 is communicated with the hollow cavity 21 while the connector body 11 is connected with the mounting block 2, and the sample tube 3 can be more conveniently installed.
And the elastic sealing member 12 is located in the plugging cavity 111 and sleeved outside the sample tube 3, that is, the elastic sealing member 12 is installed between the joint body 11 and the sample tube 3, for example, the elastic sealing member 12 is attached to the inner peripheral wall of the joint body 11 and/or the outer peripheral wall of the sample tube 3, so as to seal the sample tube 3, and the sealing performance is good.
The pressing structure 13 is movably mounted on the joint body 11, and the pressing structure 13 is adapted to push the elastic sealing member 12 to compress the sample tube 3 when moving relative to the joint body 11, that is, since the elastic sealing member 12 is compressible, the pressing structure 13 can compress or relax the elastic sealing member 12 when moving relative to the joint body 11, so as to compress or relax the sample tube 3.
Specifically, after the sample tube 3 is inserted into the insertion cavity 111 and is communicated with the metal capillary 4 of the hollow cavity 21, the pressing structure 13 can be pressed to move relative to the connector body 11 so as to push the elastic sealing element 12 to be pressed, so that the sample tube 3 can be pressed, the sample tube 3 can be mounted and sealed, the sample tube 3 can be mounted reliably, the sealing performance is good, the gas leakage in the sample tube 3 can be avoided, the reliability of detection in the sample tube 3 is improved, the elastic sealing element 12 can be loosened when the pressing structure 13 moves in the opposite direction relative to the connector body 11, and at the moment, the sample tube 3 can be directly pulled out to realize the disassembly of the sample tube 3, and the sample tube 3 has a simple structure and is convenient to operate.
Therefore, when the sample tube 3 is dismounted, the pressing structure 13 is only required to be operated to dismount the sample tube 3, the joint body 11 is not required to be dismounted, when the sample tube 3 is mounted again, the sample tube 3 is directly inserted into the insertion cavity 111 to fix and seal the sample tube 3, the insertion joint 1 has a simple structure and a small number of parts, the mounting and dismounting steps of the sample tube 3 can be reduced, the efficiency is improved, and the sealing performance is good.
According to the plug connector 1 of the sample tube, disclosed by the embodiment of the invention, the sample tube 3 can be mounted and dismounted through the cooperation of the connector body 11, the elastic sealing piece 12 and the pressing structure 13, the structure is simple, the mounting and dismounting steps and time are greatly shortened, the experimental efficiency is improved, and the sealing performance is good, so that the gas in the sample tube 3 can not leak.
In some embodiments, the pressing structure 13 includes a pressing member 131 and a floating pressing plate 132, where the pressing member 131 and the floating pressing plate 132 are respectively movably mounted on the connector body 11, and the floating pressing plate 132 is located in the plugging cavity 111, at least part of the pressing member 131 is located outside the connector body 11, and the pressing member 131 is used for driving the floating pressing plate 132 to press the elastic sealing member 12.
That is, the pressing member 131 and the floating pressing plate 132 may be moved with respect to the joint body 11, respectively, and the movement therebetween may be linked, i.e., the pressing member 131 may be moved to drive the floating pressing plate 132 to move.
In practical design, the outside of the pressing structure 13 may be set to be a square or cylindrical structure, the plugging cavity 111 is a circular cavity, the floating pressing plate 132 is matched with the plugging cavity 111, the outer diameter of the floating pressing plate 132 is smaller than the inner diameter of the plugging cavity 111, the floating pressing plate 132 and the elastic sealing member 12 may be installed inside the plugging cavity 111, as shown in fig. 3, at least part of the pressing member 131 protrudes out of the joint body 11, so as to facilitate manual operation of the pressing member 131, a connection structure is provided at the contact position between the floating pressing plate 132 and the pressing member 131, after the pressing member 131 moves relative to the joint body 11, the floating pressing plate 132 is driven to move close to the elastic sealing member 12 to squeeze the elastic sealing member 12 to seal the sample tube 3 located in the plugging cavity 111, or the floating pressing plate 132 is driven to move away from the elastic sealing member 12 to loosen the elastic sealing member 12, so as to loosen the sample tube 3 located in the plugging cavity 111, and at this time, the sample tube 3 may be directly removed.
Therefore, the floating pressing plate 132 can be driven to press or loosen the elastic sealing element 12 through the movement of the pressing piece 131, and multiple movement modes can be realized through one action, so that the structure is simple, the operation is convenient, the steps of installing and detaching the sample tube 3 can be reduced, and the operation is convenient for operators.
In some embodiments, the floating pressing plate 132 is movably installed in the plugging cavity 111 along a first direction, the pressing member 131 is movably installed in the connector body 11 along a second direction, and the first direction intersects with the second direction, that is, the moving directions of the floating pressing plate 132 and the pressing member 131 relative to the connector body 11 are different, and the moving directions of the floating pressing plate 132 and the pressing member 131 have intersection, so that the linkage during the moving of the floating pressing plate and the pressing member can be realized.
In practical design, as shown in fig. 3, the floating pressing plate 132 is movably installed in the plugging cavity 111, the floating pressing plate 132 is not connected with the plugging cavity 111, and the inner peripheral wall of the plugging cavity 111 has a limiting effect on the floating pressing plate 132, so that the floating pressing plate 132 can move relative to the plugging cavity 111 along a first direction, the pressing piece 131 is movably installed in the connector body 11, and the pressing piece 131 moves relative to the connector body 11 along a second direction, wherein the first direction can be along the axial direction of the plugging cavity 111, the second direction can be along the radial direction of the plugging cavity 111, and a certain included angle can be formed between the second direction and the radial direction of the plugging cavity 111, so that the intersection of the first direction and the second direction can be realized.
As shown in fig. 3, the pressing member 131 is located outside the joint body 11 relative to the floating pressing plate 132, and the pressing member 131 can be used as a driving member, and the floating pressing plate 132 is a driven member, so that the pressing member 131 can move along the first direction to drive the floating pressing plate 132 to move along the second direction, and the structure is simple and easy to realize.
In some embodiments, the first direction extends along the axial direction of the sample tube 3, and the second direction extends along the radial direction of the sample tube 3, that is, the first direction and the second direction are perpendicular to each other, so that the arrangement is simple in structure and convenient for manual operation of the plug connector 1.
As shown in fig. 1 to 4, the sample tube 3 may be vertically installed, and the axial direction of the sample tube 3 is the same as the vertical direction, i.e., the first direction is the vertical direction (up-down direction in the drawing), and the second direction is the horizontal direction (left-right direction in the drawing), so that the floating platen 132 moves in the vertical direction, the pressing member 131 moves in the horizontal direction, and the floating platen 132 intersects with the movement of the pressing member 131, so that movement linkage between the two can be realized.
Specifically, as shown in fig. 3, after the sample tube 3 is mounted on the connector body 11, pushing the pressing member 131 rightward can make the pressing member 131 move rightward, and the intersection of the pressing member 131 and the floating pressing plate 132 drives the floating pressing plate 132 to move upward, so as to squeeze the elastic sealing member 12 to fix and seal the sample tube 3, and pushing the pressing member 131 leftward can separate the pressing member 131 from the floating pressing plate 132, at this time, the floating pressing plate 132 moves downward, so that the elastic sealing member 12 can be loosened, and the sample tube 3 can be detached, thereby making the mounting and the detachment of the sample tube 3 more convenient.
In some embodiments, the pressing member 131 is provided with a driving boss 1311, the floating pressing plate 132 is provided with a driven boss 1321, and the driving boss 1311 is in inclined pressing contact with the driven boss 1321 to push the floating pressing plate 132 to move in the first direction when the pressing member 131 moves in the second direction.
Specifically, as shown in fig. 5-7, the pressing member 131 is located below the floating pressing plate 132, the pressing member 131 is provided with a driving boss 1311 on one side close to the floating pressing plate 132, inclined planes are formed on the left side and the right side of the driving boss 1311, the two inclined planes are vertically symmetrical, arc transitions are formed at corners of the driving boss 1311, and structural strength of the driving boss 1311 can be improved, wherein the floating pressing plate 132 is provided with a driven boss 1321 on one side close to the pressing member 131, the driven boss 1321 has the same structure as the driving boss 1311, the protruding heights of the driven boss 1321 and the driving boss 1311 are the same, and movement linkage between the pressing member 131 and the floating pressing plate 132 can be achieved through pressing of the inclined planes of the driving boss 1311 and the driven boss 1321.
Further, pushing the pressing member 131 rightward can move the driving boss 1311 close to the driven boss 1321, the inclined surface of the driving boss 1311 abuts against the inclined surface of the driven boss 1321, the floating pressing plate 132 can be pushed to move upward to squeeze the elastic sealing member 12, the sample tube 3 can be fixed and sealed, and pushing the pressing member 131 leftward can separate the driving boss 1311 from the driven boss 1321, the floating pressing plate 132 can move downward to loosen the elastic sealing member 12, the sample tube 3 can be detached, and the structure is simple and the manufacturing cost is low.
The driving boss 1311 and the driven boss 1321 are respectively set to two, as shown in fig. 6 and 7, the two driving bosses 1311 may be disposed on the front and rear sides of the pressing member 131, the two driven bosses 1321 may be disposed on the front and rear sides of the floating pressing plate 132, and the two driving bosses 1311 and the two driven bosses 1321 are disposed in a one-to-one correspondence manner, so that the floating pressing plate 132 can stably operate along the up-down direction through the press fit of the two groups of driving bosses 1311 and the driven bosses 1321, so that the extrusion force suffered by the elastic sealing member 12 is relatively balanced, and meanwhile, the boss gaps of the driving bosses 1311 and the driven bosses 1321 are fixed, so that the compression amount of the elastic sealing member 12 can be kept consistent each time, and the sealing accuracy and reliability are improved.
In some embodiments, the floating pressure plate 132 is configured in a ring shape and is sleeved outside the sample tube 3, with one axial end of the floating pressure plate 132 abutting against the elastic seal 12 and the other axial end abutting against the pressing piece 131.
Specifically, as shown in fig. 5, the floating pressing plate 132 is configured to be annular, the floating pressing plate 132 is axially installed, so that the floating pressing plate 132 is sleeved outside the sample tube 3, a certain gap is formed between the inner wall of the floating pressing plate 132 and the sample tube 3, the sample tube 3 is convenient to install and detach, in actual installation, as shown in fig. 5, the axial upper end of the floating pressing plate 132 is close to the elastic sealing element 12, and the axial lower end is close to the pressing element 131 to install, wherein the elastic sealing element 12 can be a sealing ring, the sealing ring is sleeved outside the sample tube 3, and thus, when the pressing element 131 abuts against the floating pressing plate 132 to move upwards, the floating pressing plate 132 can press the sealing ring along a circle to enable the compression amount of the sealing ring to be consistent in the circumferential direction, the sealing effect of the sealing ring is better, gas leakage entering the sample tube 3 can be effectively avoided, and the reliability of the detection of the sample tube 3 is improved.
In some embodiments, the connector body 11 is further provided with a movable cavity, the movable cavity is disposed around the plug cavity 111 and is communicated with the plug cavity 111, and the pressing member 131 is movably installed in the movable cavity and is sleeved outside the sample tube 3.
Specifically, the inside movable cavity that still is equipped with of joint body 11, the movable cavity is uncovered cavity, and radially open along joint body 11, and the movable cavity sets up and axially extends around grafting chamber 111, the movable cavity can be used to hold pressing piece 131, can be with pressing piece 131 movably connect in the movable cavity, and pressing piece 131's inside is formed with movable space 1312, movable space 1312 communicates with grafting chamber 111, can wear to locate in movable space 1312 and grafting chamber 111 with sample cell 3, in this way, can form a vertical grafting space, can make sample cell 3 along vertical installation and dismantlement.
The movable space 1312 axially penetrates through the pressing member 131, the radial dimension of the movable space 1312 of the pressing member 131 is greater than the radial dimension of the plugging cavity 111, when the sample tube 3 is not plugged and installed, the movable space 1312 is biased to the protruding structure of the pressing member 131, and is in an initial state at this time, as shown in fig. 3, the protruding structure of the pressing member 131 is at the left side, after the sample tube 3 is plugged and installed, an operator pushes the protruding structure of the pressing member 131 rightward, so that the movable space 1312 can move rightward, and the movable space 1312 remains communicated with the plugging cavity 111, and in this way, the floating pressing plate 132 can be pushed to squeeze the elastic sealing member 12 under the movement of the pressing member 131, otherwise, when the sample tube 3 needs to be disassembled, the pressing structure 13 moves reversely, so that the movable space 1312 can move leftward to loose the sample tube 3, and all can not interfere with the sample tube 3, thereby facilitating the installation and the disassembly of the sample tube 3 through the adjustment of the pressing member 131.
In some embodiments, the connector body 11 includes a connector upper portion 14 and a connector lower portion 15, the connector upper portion 14 and the connector lower portion 15 are detachably connected, and the socket 111 penetrates the connector upper portion 14 and the connector lower portion 15, and the movable cavity is formed between the connector upper portion 14 and the connector lower portion 15.
Wherein, connect the body 11 and connect downside 15 detachably through connecting upper lateral part 14, make things convenient for the installation of the internal structure of the body 11 of butt joint, and be convenient for later stage butt joint body 11 dismantle, overhaul.
Specifically, as shown in fig. 3, the upper joint part 14 and the lower joint part 15 are formed with a plugging cavity 111 inside, and the plugging cavity 111 penetrates the upper joint part 14 and the lower joint part 15 along the axial direction, wherein the upper joint part 14 and the lower joint part 15 are spaced apart to form a movable cavity, the middle of the upper joint part 14 and the lower joint part 15 is connected with a pressing piece 131, the pressing piece 131 can move relative to the upper joint part 14 and the lower joint part 15, and a floating pressing plate 132 and an elastic sealing piece 12 are installed in the plugging cavity 111 of the upper joint part 14, so that the floating pressing plate 132 can be driven to press or loosen the elastic sealing piece 12 when the pressing piece 131 moves, and the installation and the disassembly of the sample tube 3 can be realized.
In some embodiments, the inner diameter of the plugging chamber 111 is larger than the inner diameter of the hollow chamber 21, the elastic sealing member 12 is pressed between the floating pressing plate 132 and the mounting block 2, and the elastic sealing member 12 presses the sample tube 3 radially inwards when pressed by the floating pressing plate 132 and presses the bottom wall of the mounting block 2 located outside the hollow chamber 21 axially upwards.
The floating pressing plate 132 and the inserting cavity 111 jointly extrude the elastic sealing piece 12, so that the upper side of the elastic sealing piece 12 is in airtight fit with the bottom wall of the mounting block 2, and the inner side of the elastic sealing piece 12 is in airtight fit with the outer wall of the sample tube 3, thereby realizing airtight connection between the sample tube 3 and the hollow cavity 21, namely, the air path system between the sample tube 3 and the hollow cavity 21 is isolated from the outside atmosphere; the plug connector 1 has a simple structure, no adapter block is needed, and the adapter block is needed to be arranged in the conventional sample tube 3 mounting connector, because the connector is mostly a threaded piece, the processing difficulty is high and the processing precision is not easy to ensure on one hand, on the other hand, the metal mounting block and the threaded piece are usually made of different materials, the requirements to be met are different in emphasis, for example, the metal mounting block has less air release requirement, and the threaded piece has high strength and toughness; the plug connector 1 provided by the invention relates to a threaded connector structure, but the air tightness of threaded connection is not required, and the threaded connector structure is not required to be assembled and disassembled once every time the sample tube 3 is assembled and disassembled, so that the requirements on the strength and toughness of materials are lower than those of the prior art.
Specifically, as shown in fig. 3, a hollow cavity 21 and a small part of the plugging cavity 111 are formed in the mounting block 2, the inner diameter of the plugging cavity 111 is larger than that of the hollow cavity 21, a step can be formed at the joint of the plugging cavity 111 and the hollow cavity 21 for limiting the upper end of the sample tube 3, so that the hollow cavity 21 is communicated with the inner cavity of the sample tube 3, the air in the hollow cavity 21 is facilitated to flow into the sample tube 3, an elastic sealing element 12 is arranged between the mounting block 2 and the floating pressing plate 132, after the pressing element 131 drives the floating pressing plate 132 to move upwards to press the elastic sealing element 12, the elastic sealing element 12 is compressed along the axial direction, the inner walls of the sample tube 3 and the plugging cavity 111 are pressed to compress the sample tube 3, and therefore, the fixing of the sample tube 3 is realized, and meanwhile, the sealing effect can be realized.
The invention also proposes a specific surface area instrument 100.
The specific surface area instrument 100 according to the embodiment of the present invention includes a mounting block 2, a sample tube 3, and the plug connector 1 of the sample tube of any one of the above embodiments, the sample tube 3 being detachably mounted to the mounting block 2 through the plug connector 1.
The mounting block 2 is further provided with two ferrule joints 5 of the metal capillary tube 4, one ferrule joint 5 is arranged at an air inlet end and is communicated with the hollow cavity 21 in the radial direction, the other ferrule joint 5 is arranged at an air outlet end and is communicated with the hollow cavity 21 in the axial direction, specifically, as shown in fig. 1 and 2, the ferrule joint 5 at the air inlet end is horizontally arranged, the ferrule joint 5 at the air outlet end is vertically arranged, after the plug-in cavity 111 is aligned with the hollow cavity 21, the sample tube 3 is plugged into the plug-in cavity 111, the pressing piece 131 of the plug-in joint 1 drives the floating pressing plate 132 to press the elastic sealing piece 12 to tightly press the sample tube 3, then air is introduced from the ferrule joint 5 at the air inlet end, enters the sample tube 3 through the hollow cavity 21, after the specific surface area of the air is detected in the sample tube 3, the air is discharged from the sample tube 3 to the air outlet end, and the specific surface area detection of the air can be completed.
The elastic sealing piece 12 in the embodiment can be used for fixing and sealing the sample tube 3, so that the sample tube 3 can be installed and disassembled more simply and conveniently, the efficiency of detecting the specific surface area of gas is improved, the compression amount of the elastic sealing piece 12 after being pressed every time is consistent, the control precision is high, and the sealing effect is good.
1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
2. In the description of the invention, a "first feature" or "second feature" may include one or more of such features.
3. In the description of the present invention, "plurality" means two or more.
4. In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
5. In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A plug connector for a sample tube, comprising:
the connector comprises a connector body, a mounting block and a sample tube, wherein the connector body is suitable for being connected with the mounting block, an inserting cavity for inserting the sample tube is formed in the connector body, the inserting cavity is suitable for being communicated with a hollow cavity of the mounting block, and the sample tube is suitable for penetrating through the inserting cavity and extending into the hollow cavity;
the elastic sealing piece is positioned in the inserting cavity and sleeved outside the sample tube;
a pressing structure movably mounted to the joint body and adapted to urge the elastic seal against the sample tube when moved relative to the joint body;
the pressing structure comprises a pressing piece and a floating pressing plate, the floating pressing plate is movably arranged in the inserting cavity along a first direction, the pressing piece is movably arranged in the joint body along a second direction, at least part of the pressing piece is positioned outside the joint body, the pressing piece is used for driving the floating pressing plate to press the elastic sealing piece, and the first direction is intersected with the second direction;
the pressing piece is provided with a driving boss, the floating pressing plate is provided with a driven boss, and the driving boss is in pressing contact with the driven boss through an inclined plane so as to push the floating pressing plate to move along a first direction when the pressing piece moves along a second direction;
the inner diameter of the inserting cavity is larger than that of the hollow cavity, the elastic sealing element is propped between the floating pressing plate and the mounting block, and the elastic sealing element radially inwards compresses the sample tube and axially upwards compresses the bottom wall of the mounting block, which is positioned outside the hollow cavity, when being pressed by the floating pressing plate.
2. The connector of claim 1, wherein the first direction extends along an axial direction of the sample tube and the second direction extends along a radial direction of the sample tube.
3. The plug connector of the sample tube according to claim 1, wherein the floating pressing plate is configured to be annular and sleeved outside the sample tube, one axial end of the floating pressing plate abuts against the elastic sealing element, and the other axial end abuts against the pressing element.
4. The connector of claim 1, wherein the connector body is further provided with a movable cavity, the movable cavity surrounds the connector cavity and is communicated with the connector cavity, and the pressing piece is movably installed in the movable cavity and is sleeved outside the sample tube.
5. The connector of the sample tube according to claim 4, wherein the connector body comprises a connector upper side portion and a connector lower side portion, the connector upper side portion and the connector lower side portion are detachably connected, the connector cavity penetrates through the connector upper side portion and the connector lower side portion, and the movable cavity is formed between the connector upper side portion and the connector lower side portion.
6. A specific surface area instrument comprising a mounting block, a sample tube, and a plug connector for the sample tube of any one of claims 1-5, the sample tube being removably mounted to the mounting block by the plug connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310816430.XA CN116539502B (en) | 2023-07-05 | 2023-07-05 | Plug connector of sample tube and specific surface area instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310816430.XA CN116539502B (en) | 2023-07-05 | 2023-07-05 | Plug connector of sample tube and specific surface area instrument |
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| Publication Number | Publication Date |
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| CN116539502A CN116539502A (en) | 2023-08-04 |
| CN116539502B true CN116539502B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310816430.XA Active CN116539502B (en) | 2023-07-05 | 2023-07-05 | Plug connector of sample tube and specific surface area instrument |
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| CN218326174U (en) * | 2022-10-20 | 2023-01-17 | 北京精微高博仪器有限公司 | Sample pipe clamp sleeve joint, physical adsorption instrument and degasser |
| CN219062761U (en) * | 2022-09-23 | 2023-05-23 | 北京国仪精测技术有限公司 | Automatic on-off gas circuit system for crimping sample tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3445120A (en) * | 1964-08-20 | 1969-05-20 | Vernon L Barr | Wedge sealing gasket and joint |
| JPH11271248A (en) * | 1998-03-19 | 1999-10-05 | Jeol Ltd | Fixing device for esr sample tube |
| CN101619793A (en) * | 2009-07-22 | 2010-01-06 | 劳锦华 | Thin-wall metal pipe connecting piece of movable locking type |
| CN106769757A (en) * | 2016-11-21 | 2017-05-31 | 中山大学 | A kind of sample cell of the large scale ground surface characteristic analyzer of high leakproofness |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN116539502A (en) | 2023-08-04 |
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