CN217403730U

CN217403730U - Leakage detection device for sampling instrument

Info

Publication number: CN217403730U
Application number: CN202221001670.1U
Authority: CN
Inventors: 刘明耀; 王佳明; 寿淼钧
Original assignee: Ningbo Scientz Biotechnology Co ltd
Current assignee: Ningbo Scientz Biotechnology Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-09
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a weeping detection device for sample appearance includes the pick-up plate, the contact connecting piece, first separable contact, second separable contact and contact fixed plate, the pick-up plate is kept flat in the recess of seting up on the bottom plate, first wire and second wire have been laid to the upper surface of pick-up plate, clearance and contactless have between first wire and the second wire, first wire and second wire are connected through the contact connecting piece with the one end contact of first separable contact and second separable contact respectively, the other end of first separable contact and the separable contact of second is connected with the contact fixed plate contact respectively, the contact connecting piece is installed on the sample frame, the contact fixed plate is installed on a mount pad, the mount pad is installed on the bottom plate. This weeping detection device can in time respond to the liquid leakage of sample rack optional position under the appearance operating condition of taking a sample, and response sensitivity and degree of accuracy are high, can avoid causing experimental sample's waste or instrument trouble, have solved the quick assembly disassembly problem of sample rack simultaneously.

Description

Leakage detection device for sampling instrument

Technical Field

The utility model relates to a weeping detection device specifically is a weeping detection device for sample appearance.

Background

The sampling instrument is a common instrument in the process of dissolving out a medicine and sampling, the structure of the sampling instrument comprises a sampling frame and a bottom plate, the sampling frame is placed on the bottom plate, and the sampling frame is used for vertically placing a plurality of sample tubes. When the leakage problem is caused by improper operation or broken sample tube, the sample is wasted and even the instrument fails. The existing leakage detection device for the sampling instrument mostly depends on an inductor to detect capacitance signals and communicates through a cable, so that the leakage detection device is mostly applied to leakage detection on occasions where a sampling frame is fixed, and the detection device has low detection precision and long response time on micro-small amount of liquid. Some liquid leakage detection devices adopt a wireless communication mode to realize the transmission of detection signals, but the detection devices have complex structures, large signal transmission delay and need active power supply, and are troublesome in maintenance.

Disclosure of Invention

The utility model aims to solve the technical problem that, to prior art not enough, provide a response sensitivity and the high and sample frame easy dismounting's of the degree of accuracy weeping detection device for sample appearance of weeping detection.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a leakage detection device for a sampler comprises a sampling frame, a bottom plate and a sampler control system, wherein the sampling frame is detachably arranged on the bottom plate, the leakage detection device comprises a detection plate, a contact connecting piece, a first separable contact, a second separable contact and a contact fixing plate, a groove is formed in the upper end of the bottom plate, the detection plate is flatly arranged in the groove, a first lead and a second lead are distributed on the upper surface of the detection plate, a gap is formed between the first lead and the second lead and is not in contact with the first lead, the first lead is in contact connection with one end of the first separable contact through the contact connecting piece, the second lead is in contact connection with one end of the second separable contact through the contact connecting piece, and the other ends of the first separable contact and the second separable contact are respectively in contact connection with the contact fixing plate, the contact connecting piece is arranged on the sampling frame, the contact fixing plate is electrically connected with the sampling instrument control system, the contact fixing plate is arranged on an installation seat, and the installation seat is arranged on the bottom plate; when liquid leakage occurs, the liquid falls on the detection plate to communicate the first lead with the second lead, and the first lead, the second lead, the first separable contact, the second separable contact and the contact fixing plate are connected to form a liquid leakage detection loop.

The utility model discloses in the recess on the bottom plate was arranged in to the pick-up plate to weeping detection device for the sample appearance, but be connected pick-up plate and contact fixed plate through first separable contact, the separable contact of second, need not to connect in addition the power, can realize passive weeping and detect. When the liquid leakage of the sample tube on the sampling frame occurs, the liquid falls on the detection plate, the first lead and the second lead are instantly communicated under the conductive action of the falling liquid, the first lead, the second lead, the first separable contact, the second separable contact and the contact fixing plate are connected to form a liquid leakage detection loop, and the control system of the sampler can instantly respond and quickly send out a corresponding command to avoid further loss. Even a slight amount of liquid leakage can be detected and responded to instantly and quickly.

The groove on the bottom plate can be used as an open container for collecting leaked liquid, and even if part of leaked liquid exists, the leaked liquid can not directly flow into other positions of the instrument, so that further influence is avoided when large leaked liquid exists.

Sample rack detachably places on the bottom plate, just the utility model discloses subassembly settings such as weeping detection device's contact fittings can together be got along with the sample rack and put on the sample rack, help the quick assembly disassembly of sample rack on the bottom plate.

Preferably, the contact connecting member is connected to a third separable contact in a contacting manner, the first wire, the third separable contact and the contact fixing plate are connected to form an in-position detection loop, and the in-position detection loop is used for detecting whether the sampling frame is placed in position on the bottom plate. Under normal conditions, an in-place detection loop formed by connecting the lead, the third separable contact and the contact fixing plate is in a closed state, when the sampling frame is not correctly placed on the bottom plate, the in-place detection loop is disconnected, and a control system of the sampling instrument judges that the sampling frame is abnormal in position and sends out a corresponding instruction. The in-place detection loop is simple in structure and high in stability.

Preferably, the bottom plate is vertically fixed with a plurality of positioning pins, the detection plate is provided with a plurality of positioning holes corresponding to the positioning pins one by one, and each positioning pin is inserted into one positioning hole. The positioning pins are matched with the positioning holes to realize accurate positioning of the detection plate, and accuracy of a liquid leakage detection result is guaranteed. Other similar positioning structures may be used in addition to the positioning structure described above.

Preferably, the upper surfaces of the first lead and the second lead are respectively higher than the upper surface of the detection plate, so that instant communication of the first lead and the second lead during liquid leakage is ensured, and response sensitivity and accuracy of liquid leakage detection are ensured.

Preferably, the first separable contact, the second separable contact and the third separable contact are spring-loaded needles to ensure good contact and energization of the detection circuits after the sampler frame is placed in position on the bottom plate. Besides the spring thimble, other separable contact conductive structures can be adopted as the contact.

Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses weeping detection device for sample appearance can be to the timely response of the liquid leakage of sample frame optional position under the sample appearance operating condition, and response sensitivity and degree of accuracy are high, can avoid causing experimental sample's waste or instrument trouble, and this weeping detection device has solved the quick assembly disassembly problem of sample frame simultaneously.

Drawings

FIG. 1 is a schematic diagram illustrating the effect of the leakage detection apparatus after installation in the embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic external view of a sample rack according to an embodiment;

fig. 4 is a schematic top view of the detection plate in the embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The leakage detection device for the sampling instrument of the embodiment, as shown in fig. 1 to 4, the sampling instrument includes a sampling frame 1, a base plate 2 and a sampling instrument control system (not shown in the figure), the sampling frame 1 is detachably placed on the base plate 2, the leakage detection device includes a detection plate 3, a contact connecting member 4, a first separable contact 5, a second separable contact 6 and a contact fixing plate 7, a groove 21 is formed at the upper end of the base plate 2, the detection plate 3 is flatly placed in the groove 21, four positioning pins 22 are vertically fixed on the base plate 2, four positioning holes 34 corresponding to the four positioning pins 22 one by one are formed in the detection plate 3, each positioning pin 22 is inserted into one positioning hole 34, a first wire 31 and a second wire 32 are distributed on the upper surface of the detection plate 3, the upper surfaces of the first wire 31 and the second wire 32 are respectively higher than the upper surface of the detection plate 3, a gap 33 is formed between the first wire 31 and the second wire 32 and is not contacted, as shown in fig. 4, the first wire 31 and the second wire 32 are disposed opposite to each other, a white portion of the meander in fig. 4 is a gap 33 between the first wire 31 and the second wire 32, and four white circles near four corners in fig. 4 are four positioning holes 34; the first wire 31 is in contact connection with one end of the first separable contact 5 through the contact connector 4, the second wire 32 is in contact connection with one end of the second separable contact 6 through the contact connector 4, the other ends of the first separable contact 5 and the second separable contact 6 are respectively in contact connection with the contact fixing plate 7, the contact connector 4 is installed on the sampling frame 1, the contact fixing plate 7 is electrically connected with the control system of the sampling instrument, the contact fixing plate 7 is installed on a mounting seat 8, and the mounting seat 8 is installed on the bottom plate 2; when a liquid leakage occurs, the liquid falls on the detection plate 3 to connect the first lead 31 and the second lead 32, and the first lead 31, the second lead 32, the first separable contacts 5, the second separable contacts 6 and the contact fixing plate 7 are connected to form a liquid leakage detection loop.

In this embodiment, the contact connecting member 4 is connected to the third separable contact 9 in a contacting manner, and the first wire 31, the third separable contact 9 and the contact fixing plate 7 are connected to form an in-place detection circuit, which is used to detect whether the sampling frame 1 is placed in place on the base plate 2.

In this embodiment, the first separable contact 5, the second separable contact 6, and the third separable contact 9 are all pogo pins.

In this embodiment, the first separable contact 5, the second separable contact 6, and the third separable contact 9 are in independent contact with the contact fixing plate 7, respectively, and are electrically conductive, so that a power supply does not need to be additionally connected, and passive leakage detection can be realized. Only when the sampling frame 1 is placed in place on the bottom plate 2, each detection loop can be well contacted and electrified, and the sampling instrument can normally work. When the sample tube 11 on the sampling frame 1 leaks under the working state of the sampler, liquid falls on the detection plate 3, the first lead 31 and the second lead 32 are instantly communicated under the conductive action of the falling liquid, the first lead 31, the second lead 32, the first separable contact 5, the second separable contact 6 and the contact fixing plate 7 are connected to form a leakage detection loop, and the control system of the sampler can instantly respond and quickly send out corresponding instructions to avoid further loss. Even a slight amount of liquid leakage can be detected and responded to instantly and quickly.

Claims

1. The utility model provides a weeping detection device for sample appearance, the sample appearance include sample frame, bottom plate and sample appearance control system, sample frame detachably place the bottom plate on, its characterized in that, weeping detection device include pick-up plate, contact connecting piece, first separable contact, second separable contact and contact fixed plate, the upper end of bottom plate set up flutedly, the pick-up plate keep flat in the recess, the upper surface of pick-up plate cloth be equipped with first wire and second wire, first wire and second wire between have the clearance and contactless, first wire through the contact connecting piece with the one end contact connection of first separable contact, the second wire through the contact connecting piece with the one end contact connection of second separable contact, the other end of first separable contact and second separable contact respectively with the contact fixed plate contact connect even The contact connecting piece is arranged on the sampling frame, the contact fixing plate is electrically connected with the sampling instrument control system, the contact fixing plate is arranged on an installation seat, and the installation seat is arranged on the bottom plate; when liquid leakage occurs, the liquid falls on the detection plate to communicate the first lead with the second lead, and the first lead, the second lead, the first separable contact, the second separable contact and the contact fixing plate are connected to form a liquid leakage detection loop.

2. The leakage detection device for a sampler as claimed in claim 1, wherein said contact connecting member is connected to a third separable contact, said first conductive wire, said third separable contact and said contact fixing plate are connected to form an in-position detection circuit, said in-position detection circuit is used to detect whether said sampling frame is in place on said base plate.

3. The leakage detection device for the sampling instrument according to claim 1 or 2, wherein a plurality of positioning pins are vertically fixed on the bottom plate, a plurality of positioning holes corresponding to the positioning pins one to one are formed on the detection plate, and each positioning pin is inserted into one positioning hole.

4. The leak detector according to claim 1 or 2, wherein the upper surfaces of the first and second lead wires are respectively higher than the upper surface of the detection plate.

5. The apparatus of claim 2 wherein the first separable contact, the second separable contact, and the third separable contact are pogo pins.