CN111963720A - In-vitro diagnostic analyzer, liquid supply device and switch valve unit - Google Patents
In-vitro diagnostic analyzer, liquid supply device and switch valve unit Download PDFInfo
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- CN111963720A CN111963720A CN202010685038.2A CN202010685038A CN111963720A CN 111963720 A CN111963720 A CN 111963720A CN 202010685038 A CN202010685038 A CN 202010685038A CN 111963720 A CN111963720 A CN 111963720A
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
- F16K11/0853—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in a single plane perpendicular to the axis of the plug
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
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Abstract
The invention discloses an in vitro diagnostic analyzer, a liquid supply device and a switch valve unit, wherein the switch valve unit comprises a mounting part, a valve seat and a valve core; the mounting piece is provided with a through hole and an annular convex body arranged at the outer edge of the through hole, and the annular convex body is surrounded to form a mounting groove; one end of the valve seat is inserted into the mounting groove, the end part of one end of the valve seat is in sealing fit with the side wall of the mounting part, the outer side wall of the valve seat is in sealing fit with the inner side wall of the annular convex body, the valve seat is provided with a matching cavity communicated with the through hole, and the valve seat is also provided with an air inlet hole, a liquid inlet hole and an outer connecting hole which are communicated with the matching cavity; the valve core is provided with a valve body, the valve body is inserted into the matching cavity through the through hole and is in sealing matching with the matching cavity, the valve body is provided with a flow passage, and the valve body can move relative to the valve seat, so that the flow passage is communicated with the air inlet hole and the external connection hole, or the flow passage is communicated with the liquid inlet hole and the external connection hole, or the valve body seals the air inlet hole, the liquid inlet hole and the external connection hole. The switch valve unit is reliable in sealing and applied to a liquid supply device.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an in-vitro diagnosis analyzer, a liquid supply device and a switch valve unit.
Background
An in vitro diagnostic analyzer is an instrument that can perform quantitative or qualitative analysis of a sample of a patient's bodily fluid. When the in vitro diagnosis analyzer is used for analyzing samples, calibration liquid is often used for calibration.
At present, when the reagent card is not internally provided with the calibration solution, a liquid supply device is required to provide the calibration solution for the in-vitro diagnostic analyzer. In order to ensure the stability and the tightness of the components of the calibration liquid, the liquid supply device is usually stored by using a specific reagent bag, and the on-off control of the delivery of the calibration liquid is carried out by using an on-off valve unit. The traditional switch valve unit has design defects, and the conditions of scaling liquid leakage or pollution easily occur due to unreliable sealing.
Disclosure of Invention
In view of the above, it is desirable to provide an in vitro diagnostic analyzer, a liquid supply device, and an on-off valve unit. The switch valve unit is reliable in sealing, and calibration liquid cannot leak or be polluted when the switch valve unit is applied to a liquid supply device. The in-vitro diagnosis analyzer adopts the liquid supply device, and can ensure the authenticity of the detection data.
The technical scheme is as follows:
in one aspect, the present application provides a switching valve unit including a mounting member, a valve seat, and a valve core; the mounting piece is provided with a through hole and an annular convex body arranged at the outer edge of the through hole, and the annular convex body is surrounded to form a mounting groove; one end of the valve seat is inserted into the mounting groove, the end part of one end of the valve seat is in sealing fit with the side wall of the mounting part, the outer side wall of the valve seat is in sealing fit with the inner side wall of the annular convex body, the valve seat is provided with a matching cavity communicated with the through hole, and the valve seat is also provided with an air inlet hole, a liquid inlet hole and an outer connecting hole which are communicated with the matching cavity; the valve core is provided with a valve body, the valve body is inserted into the matching cavity through the through hole and is in sealing matching with the matching cavity, the valve body is provided with a flow passage, and the valve body can move relative to the valve seat, so that the flow passage is communicated with the air inlet hole and the external connection hole, or the flow passage is communicated with the liquid inlet hole and the external connection hole, or the valve body seals the air inlet hole, the liquid inlet hole and the external connection hole.
The switch valve unit is provided with an installation groove for installing the valve seat by arranging the annular convex body on the installation part, and the valve seat is fixed on the installation part. Meanwhile, the end part of one end of the valve seat is in sealing fit with the side wall of the mounting part, and the outer side wall of the valve seat is in sealing fit with the inner side wall of the annular convex body, so that a reliable sealing structure is formed between the valve seat and the mounting part, and liquid cannot overflow from the space between the valve seat and the mounting part. Furthermore, the valve body is in sealing fit with the matching cavity, so that liquid cannot overflow from the valve seat and the valve body, the liquid can be conveniently switched only through the flow channel, and the sealing reliability of the switch valve unit is further improved.
When the switch valve unit is used and calibration liquid is required to be output, only the valve body needs to be driven to move, so that the flow channel is communicated with the liquid inlet hole and the outer connecting hole, and the calibration liquid can be output. After the calibration analysis is finished, the valve body is driven to move, so that the flow channel is communicated with the air inlet hole and the outer connecting hole, and further, gas can be introduced into the reagent card, and the calibration liquid can conveniently flow in the reagent card. When the sample liquid is extracted again, the valve body is driven to move, so that the flow channel is staggered with the air inlet hole, the liquid inlet hole and the external connection hole, the air inlet hole, the liquid inlet hole and the external connection hole are sealed, namely the air inlet hole, the liquid inlet hole and the external connection hole are sealed by utilizing the side wall of the valve body.
The technical solution is further explained below:
in one embodiment, the air inlet hole, the liquid inlet hole and the external hole are arranged at intervals along the same circumference, and the valve body can rotate relative to the valve seat.
In one embodiment, the valve seat is provided with a first sealing part which is arranged in the matching cavity and is close to the bottom of the matching cavity, and the valve body is provided with a second sealing part which is in sealing fit with the first sealing part and can rotate relative to the first sealing part.
In one embodiment, the valve core is provided with a force application part fixed with the valve body, and the force application part is arranged outside the through hole.
In one embodiment, the switch valve unit further comprises a gland fixedly connected with the mounting part, the gland covers the outer side of the valve seat, the gland is provided with a first cover body, the first cover body is provided with an installation cavity, and the installation cavity is in sealing sleeve fit with the valve seat.
In one embodiment, the pressing cover is provided with a second cover body fixed with the first cover body, and the second cover body and the valve seat are arranged at intervals to form an air inlet channel communicated with the air inlet hole.
In one embodiment, the second cover body is sleeved and matched with the outer side wall of the annular convex body.
On the other hand, this application still provides a liquid supply device, including the ooff valve unit in above-mentioned any embodiment, still include the protecting crust and be used for saving the stock solution spare of calibration solution, the protecting crust be equipped with the communicating storage chamber of through-hole, the ooff valve unit is installed on the protecting crust through the installed part for the disk seat sets up in the storage intracavity, stock solution spare and feed liquor hole communicate with each other, and set up in the storage intracavity.
When the liquid supply device is used, only the valve body needs to be driven to move, so that the flow channel is communicated with the liquid inlet hole and the outer connecting hole, and the calibration liquid in the liquid storage part can be output. After the calibration analysis is finished, the valve body is driven to move, so that the flow channel is communicated with the air inlet hole and the outer connecting hole, and further, gas can be introduced into the reagent card, and the calibration liquid can conveniently flow in the reagent card. Before the sample liquid is extracted, the valve body is driven to move, so that the flow channel is staggered with the air inlet hole, the liquid inlet hole and the external connection hole, the air inlet hole, the liquid inlet hole and the external connection hole are sealed, namely the air inlet hole, the liquid inlet hole and the external connection hole are sealed by utilizing the side wall of the valve body. The valve seat is arranged in the storage cavity, and can prevent the calibration solution from leaking or being polluted.
The technical solution is further explained below:
in one embodiment, the liquid supply device further comprises a supporting seat fixed on the protective shell, the supporting seat is provided with a hollow needle and a connecting pipe, the hollow needle is fixed on the supporting seat, one end of the connecting pipe is communicated with the hollow needle, and the other end of the connecting pipe is communicated with the external hole.
In another aspect, the present application further provides an in vitro diagnostic analyzer, including a liquid supply device as in any of the above embodiments.
When the in-vitro diagnostic analyzer is used, a calibration liquid inlet of the reagent card is in butt joint with the external connection hole, then the valve body is driven to move, so that the flow channel is communicated with the liquid inlet hole and the external connection hole, and the calibration liquid in the liquid storage part can be input into the reagent card and enter the detection area for calibration; after the calibration analysis is finished, the valve body is driven to move, so that the flow channel is communicated with the air inlet hole and the outer connecting hole, air can be introduced into the reagent card, and the calibration liquid in the reagent card can flow to the waste liquid cavity conveniently. Before the sample liquid is extracted again, the valve body is driven to move, so that the flow channel is staggered with the air inlet hole, the liquid inlet hole and the external connection hole, the air inlet hole, the liquid inlet hole and the external connection hole are sealed, and therefore the phenomenon that in the process of extracting the sample liquid, air or calibration liquid is sucked into the reagent card again to affect the extraction of the sample liquid is avoided. Because the switch valve unit is reliable in sealing, the calibration liquid cannot leak or be polluted when the switch valve unit is applied to a liquid supply device, and the in-vitro diagnosis analyzer can ensure the authenticity of detection data.
Drawings
FIG. 1 is a schematic front view of a liquid supply apparatus according to an embodiment;
FIG. 2 is a schematic view, in half section A-A, of the liquid supply apparatus shown in FIG. 1;
FIG. 3 is an enlarged view of part A shown in FIG. 2;
FIG. 4 is a schematic view of the valve cartridge of FIG. 3 in another position;
FIG. 5 is a schematic left side view of the liquid supply apparatus shown in FIG. 1;
FIG. 6 is a schematic view, in half section B-B, of the liquid supply apparatus shown in FIG. 5;
FIG. 7 is an enlarged partial view of B shown in FIG. 6;
FIG. 8 is a schematic view of the valve cartridge of FIG. 7 in another position;
FIG. 9 is an exploded view of the liquid supply apparatus shown in FIG. 1;
fig. 10 is a partially enlarged view of C shown in fig. 9.
Description of reference numerals:
100. an on-off valve unit; 110. a mounting member; 114. a through hole; 116. an annular convex body; 118. mounting grooves; 120. a valve seat; 120a, a mating cavity; 122. an air inlet; 124. a liquid inlet hole; 126. an outer connecting hole; 128. a first seal portion; 130. a valve core; 132. a valve body; 102. a flow channel; 104. a second seal portion; 134. a force application part; 140. a gland; 142. a first cover body; 106. a mounting cavity; 144. a second cover body; 108. an air intake passage; 200. a protective shell; 210. a storage chamber; 400. a liquid storage member; 300. a supporting seat; 310. a hollow needle; 320. a connecting pipe; 330. an air outlet needle; 340. and an air outlet pipe.
Brief description of the drawingsthe accompanying drawings, which form a part of this application, are included to provide a further understanding of the invention, and are included to explain illustrative embodiments of the invention and the description thereof and are not to be considered limiting of the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
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.
As shown in fig. 2, 6, 9 and 10, in one embodiment, a liquid supply apparatus is provided, which includes a switching valve unit 100, a protective case 200 and a liquid storage part 400 for storing calibration liquid.
As shown in fig. 1 to 3, 7 and 10, in one embodiment, the switching valve unit 100 includes a mounting member 110, a valve seat 120 and a valve core 130; the mounting member 110 is provided with a through hole 114 and an annular convex body 116 arranged at the outer edge of the through hole 114, and the annular convex body 116 is surrounded to form a mounting groove 118; one end of the valve seat 120 is inserted into the mounting groove 118, and the end of one end of the valve seat 120 is in sealing fit with the side wall of the mounting member 110, the outer side wall of the valve seat 120 is in sealing fit with the inner side wall of the annular convex body 116, the valve seat 120 is provided with a matching chamber 120a communicated with the through hole 114, and the valve seat 120 is further provided with an air inlet hole 122, an air inlet hole 124 and an outer connecting hole 126 which are communicated with the matching chamber 120 a; the valve core 130 is provided with a valve body 132, the valve body 132 is inserted into the matching cavity 120a through the through hole 114, the valve body 132 is in sealing fit with the matching cavity 120a, the valve body 132 is provided with the flow passage 102, the valve body 132 can move relative to the valve seat 120, so that the flow passage 102 is communicated with the air inlet hole 122 and the external hole 126, or the flow passage 102 is communicated with the air inlet hole 124 and the external hole 126, or the valve body 132 seals the air inlet hole 122, the air inlet hole 124 and the external hole 126.
The shield case 200 is provided with a storage chamber 210 communicating with the through-hole 114, and the switching valve unit 100 is mounted on the shield case 200 by means of the mounting member 110 such that the valve seat 120 is disposed in the storage chamber 210 and the liquid storage member 400 communicates with the liquid inlet hole 124 and is disposed in the storage chamber 210.
As shown in fig. 3 and 4, the on-off valve unit 100 can prevent the liquid from overflowing the storage chamber 210 by providing the mounting member 110 and the storage chamber 210, and securing the valve seat 120 in the storage chamber 210 by forming the mounting groove 118 for mounting the valve seat 120 by providing the annular protrusion 116 on the mounting member 110. Meanwhile, the end part of one end of the valve seat 120 is in sealing fit with the side wall of the mounting member 110, and the outer side wall of the valve seat 120 is in sealing fit with the inner side wall of the annular convex body 116, so that a reliable sealing structure is formed between the valve seat 120 and the mounting member 110, and liquid cannot overflow from the space between the valve seat 120 and the mounting member 110; and the mounting member 110 is easily sealed from the containment vessel 200 so that liquid is easily prevented from escaping the storage chamber 210. Further, the valve body 132 is in sealing engagement with the engagement chamber 120a, so that liquid does not overflow between the valve seat 120 and the valve body 132, and the liquid can be switched only through the flow passage 102, further improving the sealing reliability of the on-off valve unit 100.
When the liquid supply device is used, the valve body 132 is driven to move, so that the flow channel 102 is communicated with the liquid inlet hole 124 and the external connection hole 126, and the calibration liquid can be output (as shown in fig. 3 and 7). After the calibration analysis is completed, the valve body 132 is driven to move, so that the flow channel 102 is communicated with the air inlet 122 and the external connection hole 126, and further, air can be introduced into the reagent card, thereby facilitating the flow of the calibration solution in the reagent card (as shown in fig. 4 and 8). Before the sample liquid is extracted, the valve body 132 is driven to move, so that the flow channel 102 is staggered with the air inlet 122, the liquid inlet 124 and the external hole 126, and the air inlet 122, the liquid inlet 124 and the external hole 126 are sealed, that is, the air inlet 122, the liquid inlet 124 and the external hole 126 are sealed by using the side wall of the valve body 132. The valve seat 120 is disposed in the storage chamber 210, i.e., the air inlet hole 122 is also disposed in the storage chamber 210, so that leakage or contamination of the calibration solution can be prevented.
It should be noted that the specific structure of the "liquid storage component 400" includes, but is not limited to, a liquid storage tank, a liquid storage box, a liquid storage bag, etc.
Specifically, in this embodiment, the liquid storage member 400 is an aluminum-plastic composite film bag. Therefore, the calibration liquid is beneficial to ensuring the sterile sealed storage of the calibration liquid and prolonging the quality guarantee period of the calibration liquid of the liquid supply device.
It should be noted that the phrase "the valve body 132 is movable relative to the valve seat 120" includes rotation and reciprocal linear movement, and can be selected according to the arrangement and formation of the air inlet hole 122, the liquid inlet hole 124 and the external connection hole 126.
It should be noted that the "mounting member 110" and the "protective shell 200" are integrally formed, such as injection molding; or may be separately manufactured and then assembled and secured together.
Specifically, in the present embodiment, the "mounting member 110" is integrally injection-molded with the "protective shell 200" as a single piece.
Specifically, in the present embodiment, as shown in fig. 6 to 7, the air inlet hole 122, the liquid inlet hole 124 and the external connection hole 126 are disposed along the same circumference at intervals, and the valve body 132 can rotate relative to the valve seat 120. Therefore, the valve body 132 is only rotated to switch the flow channel 102, so as to communicate the air inlet hole 122 with the external hole 126, or communicate the liquid inlet hole 124 with the external hole 126, or not communicate with the air inlet hole 122, the liquid inlet hole 124 and the external hole 126, thereby achieving the sealing effect by the valve body 132. While also facilitating improved reliability of the sealing engagement of the valve body 132 with the through-bore 114.
In addition to the above embodiments, as shown in fig. 3 and 4, in one embodiment, the valve seat 120 is provided with a first sealing portion 128, the first sealing portion 128 is disposed in the mating cavity 120a and is disposed near the bottom of the mating cavity 120a, the valve body 132 is provided with a second sealing portion 104 in sealing engagement with the first sealing portion 128, and the second sealing portion 104 can rotate relative to the first sealing portion 128. In this way, by the cooperation of the first sealing portion 128 and the second sealing portion 104, the sealing performance between the valve body 132 and the valve seat 120 is further improved, so that the liquid can only flow through the flow passage 102, and the risk of leakage of the calibration liquid is further avoided.
Specifically, as shown in fig. 3 and 4, the first sealing portion 128 is an annular protrusion, and the second sealing portion 104 is an annular groove that is in interference fit with the annular protrusion. The valve body 132 and the valve seat 120 are tightly fitted to form a sealing structure by the interference fit of the annular protrusion and the annular groove.
Or, equivalently, the second seal portion 104 is an annular projection and the first seal portion 128 is an annular groove that has an interference fit with the annular projection.
In addition to any of the above embodiments, as shown in fig. 3 and 4, in one embodiment, the valve body 130 is provided with an urging portion 134 fixed to the valve body 132, and the urging portion 134 is provided outside the through hole 114. In this way, the valve body 132 can be driven to move only by driving the biasing portion 134, thereby facilitating the operation and controlling the switching of the flow path 102.
Specifically, the force application portion 134 is a knob structure, a handle structure, an inner hexagonal structure, an outer hexagonal structure, or the like.
On the basis of any of the above embodiments, as shown in fig. 3 and 4, in an embodiment, the switching valve unit 100 further includes a pressing cover 140 fixedly connected to the mounting member 110, the pressing cover 140 covers the outer side of the valve seat 120, the pressing cover 140 is provided with a first cover 142, the first cover 142 is provided with the mounting cavity 106, and the mounting cavity 106 is in sealing sleeve fit with the valve seat 120. In this way, the valve seat 120 is fixed on the mounting member 110 by the pressing cover 140, and the mounting cavity 106 of the first cover 142 is in sealing fit with the valve seat 120, and at this time, the fitting cavity 120a may be a through cavity, and a sealing structure is formed by the first cover 142 and the valve seat 120.
It can be understood that the matching cavity 120a is a through cavity, which is convenient for air to flow out, so that the installation and matching of the valve body 132 and the valve seat 120 are smoother, and under the condition that the sealing performance of the valve seat 120 and the installation part 110, the valve seat 120 and the valve body 132, and the valve body 132 and the installation part 110 can be ensured first, the first pressing cover 140 is further fixed, and meanwhile, the first cover body 142 is used for sealing the matching cavity 120a, which is convenient for forming a reliable switch valve structure, so that the liquid can be switched only through the flow channel 102.
In addition to the above embodiments, as shown in fig. 3 and 4, in one embodiment, the pressing cover 140 is provided with a second cover 144 fixed to the first cover 142, and the second cover 144 and the valve seat 120 are spaced apart to form the air inlet channel 108 communicating with the air inlet 122. Thus, the air inlet channel 108 is formed by the second cover 144 and the valve seat 120, so that the air inlet hole 122 is not directly exposed to the outside, and the air inlet hole 122 is prevented from being blocked. Meanwhile, a circuitous air inlet channel is formed by the air inlet channel 108, which is beneficial to blocking impurities, and prevents the impurities from entering the channel 102 and subsequent pipelines through the air inlet 122 to pollute the calibration solution and influence the authenticity of the detection data.
In addition, it can be understood that the second cover 144 is spaced from the valve seat 120 to form the air inlet channel 108, and an air inlet pipe is not required to be arranged, which is beneficial to reducing the manufacturing cost; meanwhile, the phenomenon that the air inlet pipe sleeved with the air inlet pipe falls off to influence air inlet when the working time is long is avoided.
On the basis of the above embodiments, as shown in fig. 3 and fig. 4, in an embodiment, the second cover body 144 is sleeved and matched with the outer side wall of the annular convex body 116. In this way, the annular protrusion 116 is sleeved and matched with the second cover 144 to fix the pressing cover 140, so that the overall structure is more compact.
The first cover 142 and the second cover 144 can be fixed by various methods, such as screwing, welding, bonding, and the like. Specifically, in the present embodiment, the two are integrally formed.
On the basis of any of the above embodiments, as shown in fig. 6 and 9, in an embodiment, the liquid supply apparatus further includes a supporting base 300, the supporting base 300 is fixed on the protective shell 200, the supporting base 300 is provided with a hollow needle 310 and a connecting tube 320, the hollow needle 310 is fixed on the supporting base 300, one end of the connecting tube 320 is communicated with the hollow needle 310, and the other end of the connecting tube 320 is communicated with the external connection hole 126. Thus, the hollow needle 310 is matched with the support base 300 to form a socket for butting the reagent card, so that the reagent card is conveniently fixed on the support base 300 to extract the calibration solution. In addition, the connection tube 320 is provided, so that the position of the hollow needle 310 on the support base 300 can be flexibly set.
On the basis of the above embodiments, as shown in fig. 6, 7 and 9, in an embodiment, the supporting base 300 further includes a gas outlet needle 330 and a gas outlet pipe 340 communicated with the gas outlet needle 330, and the gas outlet needle 330 and the hollow needle 310 are disposed at an interval. In this way, the air outlet needle 330 can be used to interface with the air suction hole of the reagent card, and then the air outlet pipe 340 can be used to interface with the vacuum pump, so as to provide negative pressure for the flow channel 102 of the reagent card.
In one embodiment, an in vitro diagnostic analyzer is further provided, comprising the liquid supply device as in any one of the above embodiments.
When the in-vitro diagnostic analyzer is used, a calibration liquid inlet of the reagent card is in butt joint with the external connection hole 126, then the valve body 132 is driven to move, the flow channel 102 is communicated with the liquid inlet hole 124 and the external connection hole 126, and calibration liquid in the liquid storage part 400 can be input into the reagent card and enter a detection area for calibration; after the calibration analysis is completed, the valve body 132 is driven to move, so that the flow channel 102 is communicated with the air inlet hole 122 and the external connection hole 126, and further, gas can be introduced into the reagent card, and the calibration solution in the reagent card can flow to the waste liquid cavity conveniently. Before the sample liquid is extracted, the valve body 132 is driven to move, so that the flow channel 102 is staggered with the air inlet hole 122, the liquid inlet hole 124 and the external connection hole 126, the air inlet hole 122, the liquid inlet hole 124 and the external connection hole 126 are sealed, and therefore the phenomenon that air or calibration liquid is sucked into the reagent card again to affect the extraction of the sample liquid in the process of extracting the sample liquid is avoided. Because the switch valve unit 100 is reliable in sealing, the calibration liquid cannot leak or be polluted when the switch valve unit is applied to a liquid supply device, so that the in-vitro diagnosis analyzer can ensure the authenticity of detection data.
It should be noted that, equivalently, "some" or "some" may be a part corresponding to "a member", that is, "some" or "some" may be manufactured integrally with "another part of the member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.
It should be noted that, the components included in the "unit", "assembly", "mechanism" and "device" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" 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. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A switching valve unit, characterized by comprising:
the mounting piece is provided with a through hole and an annular convex body arranged at the outer edge of the through hole, and the annular convex body is surrounded to form a mounting groove;
the valve seat is provided with a matching cavity communicated with the through hole, and is also provided with an air inlet hole, a liquid inlet hole and an outer connecting hole which are communicated with the matching cavity; and
the valve body can move relative to the valve seat, so that the flow passage is communicated with the air inlet hole and the outer connecting hole, or the flow passage is communicated with the liquid inlet hole and the outer connecting hole, or the valve body seals the air inlet hole, the liquid inlet hole and the outer connecting hole.
2. The switching valve unit as claimed in claim 1, wherein the air inlet hole, the liquid inlet hole and the external connection hole are provided at intervals along the same circumference, and the valve body is rotatable with respect to the valve seat.
3. A switching valve unit according to claim 2, characterized in that the valve seat is provided with a first seal portion which is provided in the fitting chamber and is provided near the bottom of the fitting chamber, and the valve body is provided with a second seal portion which is sealingly engaged with the first seal portion, the second seal portion being rotatable relative to the first seal portion.
4. The switching valve unit according to claim 1, wherein the valve core is provided with an urging portion fixed to the valve body, the urging portion being provided outside the through hole.
5. The switch valve unit according to any one of claims 1 to 4, further comprising a gland fixedly connected to the mounting member, wherein the gland is covered on the outer side of the valve seat, and the gland is provided with a first cover body, the first cover body is provided with a mounting cavity, and the mounting cavity is in sealing sleeve fit with the valve seat.
6. The switching valve unit as claimed in claim 5, wherein the pressing cover is provided with a second cover fixed to the first cover, the second cover being spaced apart from the valve seat to form an intake passage communicating with the intake port.
7. The switch valve unit of claim 6, wherein the second cover body is in sleeved engagement with an outer side wall of the annular convex body.
8. A liquid supply apparatus comprising the on-off valve unit as claimed in any one of claims 1 to 7, further comprising a shield case provided with a storage chamber communicating with the through-hole, and a liquid storage member for storing a calibration liquid, the on-off valve unit being attached to the shield case by the mounting member such that the valve seat is disposed in the storage chamber, and the liquid storage member communicating with the liquid inlet hole and being disposed in the storage chamber.
9. The liquid supply device as claimed in claim 8, further comprising a support base fixed to the protective case, wherein the support base is provided with a hollow needle and a connecting tube, the hollow needle is fixed to the support base, one end of the connecting tube is in communication with the hollow needle, and the other end of the connecting tube is in communication with the external hole.
10. An in vitro diagnostic analyzer comprising the liquid supply apparatus of claim 8 or 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685038.2A CN111963720A (en) | 2020-07-16 | 2020-07-16 | In-vitro diagnostic analyzer, liquid supply device and switch valve unit |
| PCT/CN2020/115460 WO2022011820A1 (en) | 2020-07-16 | 2020-09-16 | In vitro diagnostic analyzer, liquid supply device and switch valve unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685038.2A CN111963720A (en) | 2020-07-16 | 2020-07-16 | In-vitro diagnostic analyzer, liquid supply device and switch valve unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111963720A true CN111963720A (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010685038.2A Pending CN111963720A (en) | 2020-07-16 | 2020-07-16 | In-vitro diagnostic analyzer, liquid supply device and switch valve unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111963720A (en) |
| WO (1) | WO2022011820A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298026A (en) * | 1979-12-17 | 1981-11-03 | Instrumentation Laboratory Inc. | Spool valve |
| CN103543185B (en) * | 2012-12-06 | 2015-06-24 | 理邦（美国）诊断有限公司 | Testing cartridge for an in vitro medical diagnostic device |
| JP6015440B2 (en) * | 2012-12-28 | 2016-10-26 | 株式会社島津製作所 | Material testing machine |
| CN106483181B (en) * | 2016-03-31 | 2023-08-15 | 深圳市理邦精密仪器股份有限公司 | Blood gas analyzer |
| CN109099189A (en) * | 2018-10-13 | 2018-12-28 | 广东长青（集团）股份有限公司 | A kind of double gas kind switching valves |
| CN209309392U (en) * | 2018-11-16 | 2019-08-27 | 宁国聚隆减速器有限公司 | A kind of switching valve module |
| CN110964715B (en) * | 2019-12-05 | 2021-11-26 | 广州万孚生物技术股份有限公司 | In-vitro diagnosis and analysis device and reagent card |
| CN212429843U (en) * | 2020-07-16 | 2021-01-29 | 广州万孚生物技术股份有限公司 | In-vitro diagnostic analyzer, liquid supply device and switch valve unit |
-
2020
- 2020-07-16 CN CN202010685038.2A patent/CN111963720A/en active Pending
- 2020-09-16 WO PCT/CN2020/115460 patent/WO2022011820A1/en active Application Filing
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| Publication number | Publication date |
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| WO2022011820A1 (en) | 2022-01-20 |
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