CN210322802U - Detection head for chemiluminescence detector - Google Patents
Detection head for chemiluminescence detector Download PDFInfo
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- CN210322802U CN210322802U CN201920893835.2U CN201920893835U CN210322802U CN 210322802 U CN210322802 U CN 210322802U CN 201920893835 U CN201920893835 U CN 201920893835U CN 210322802 U CN210322802 U CN 210322802U
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Abstract
The utility model relates to a detection head for a chemiluminescence detector, which comprises a photoelectric mounting block, a first mounting block and a second mounting block, a mounting plate, a pressing plate, a spherical part, a head cover, a light avoiding pipe, an optical fiber, a guide rod and a compression spring, wherein the photoelectric mounting block is internally provided with an end surface type photomultiplier; the utility model discloses detect first compact structure, can effectual reduction chemiluminescence detector's the complete machine the volume, adopt plug-type electro-magnet as Z axle power unit, with low costs, the utility model discloses can realize that hood downstream realizes that reading, function are practical through mechanisms such as plug-type electro-magnet.
Description
Technical Field
The utility model belongs to the technical field of the chemiluminescence detector, concretely relates to chemiluminescence detector is with detecting head.
Background
Bioluminescence and chemiluminescence, a common phenomenon in nature, refers to the light emitted during a chemical reaction, also known as luminescence, and is often used to determine the amount of an unknown component in a sample, and the concentration of the unknown component can be deduced by the ratio of the emitted light, so that it is very useful to determine the emitted light during the chemical reaction. The rate of light generated during the reaction is directly related to the amount of emitted light, and accordingly, is proportional to the concentration of the luminescent material. Therefore, the light during the reaction can relatively reflect the amount of the luminescent substance in the target sample.
The chemiluminescence detector is provided with an optical measurement module, most of the chemiluminescence detectors adopt a scheme that a photomultiplier tube directly collects photons and then counts the photons, because the photosurface of the photomultiplier tube is arranged at one end of the chemiluminescence detector, generally, when the chemiluminescence detector detects a sample loaded on an ELISA plate, a light guide optical fiber is needed to conduct light quanta emitted by the sample to the photosurface of the photomultiplier tube, and the periphery of a light path needs to ensure a strict darkroom state in the process of receiving and conducting the light quanta, so that the detection accuracy can be ensured.
Chinese patent 201721523750.2 discloses a reading module of a semi-automatic chemiluminescence immunoassay analyzer, which comprises a mounting plate, a photomultiplier tube and a light guide rod, wherein the light guide rod comprises a horizontal section and a vertical section which are perpendicular to each other, the end of the horizontal section is connected with the photomultiplier tube, the end of the vertical section penetrates through the mounting plate and then is sleeved with a light-taking and light-avoiding sleeve, a fully-closed dark box which encloses the photomultiplier tube and the light guide rod is fixedly arranged on the mounting plate, the light-taking and light-avoiding sleeve is made of rubber material, the microplate reactant can be obtained to emit light in a sealed and light-tight state, the lower end of the light-taking and light-avoiding sleeve is tapered, and the upper end of the light-taking and light-avoiding sleeve is provided with; this patent sets firmly the motor through the one side at the camera bellows, carries out the collection of light quantum through gear drive leaded light stick up-and-down motion, but this structure adopts the motor, and the cost is higher, and whole reading module occupies the volume great, is unfavorable for the shrink of chemiluminescence detector volume.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a detection head for a chemiluminescence detector, which has compact structure, low cost and practical function.
The technical scheme of the utility model as follows:
a detection head for a chemiluminescence detector comprises a photoelectric mounting block, a first mounting block, a second mounting block, a mounting plate, a pressing plate, a spherical part, a head cover, a light avoiding tube, an optical fiber, a guide rod and a compression spring, wherein the photoelectric mounting block is internally provided with an end face type photomultiplier, the first mounting block and the second mounting block are sequentially fixed on the front end face of the photoelectric mounting block from top to bottom and are hollow, the mounting plate is arranged on the upper end face of the photoelectric mounting block and extends forwards, the pressing plate is arranged between the mounting plate and the first mounting block, the spherical part is arranged on the pressing plate, the head cover is arranged below the second mounting block, the lower end of the light avoiding tube is connected with the head cover, the upper end of the light avoiding tube is always positioned in the second mounting block, the lower end of the optical fiber is arranged in the light avoiding tube, the upper end of the optical fiber sequentially penetrates through the light avoiding tube and the second mounting block and faces a measurement;
the front portion of mounting panel is provided with plug-type electro-magnet, the top of plug-type electro-magnet's push rod is provided with the kicking block, be equipped with the top of sloping below the kicking block, the top of sloping with spherical part butt can drive spherical part down and take place the displacement under the drive of drawing the electro-magnet.
Further, the guide bar between second installation piece and the hood is gone up to the cover and is equipped with anticollision spring, anticollision spring's the top is provided with the jump ring that is used for spacing anticollision spring's highest position.
Furthermore, in a natural state that the pressing plate is not pressed, the distance from the snap spring to the lower end face of the second mounting block is H1, the downward displacement distance of the spherical piece driven by the top block is H2, and the distance between H1 and H2 is 1-2 mm.
Further, the spherical member is a cap nut or a ball stud.
Further, be provided with the top cap that is used for preventing the kicking block skew upwards skew on the mounting panel, be provided with the kicking block storage tank that is used for the push rod via hole that the push rod passed, is used for partial holding kicking block in the top cap, be provided with the steamboat groove that extends along the push rod direction on the last cell wall of kicking block storage tank, be provided with the steamboat in the steamboat groove, the lower up end butt with the kicking block of steamboat below the steamboat.
Furthermore, the front part of the mounting plate is provided with a large through hole corresponding to the push rod and the ejector block.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has compact detection head structure, can effectively reduce the volume of the complete machine of the chemiluminescence detector, adopts the push-pull electromagnet as the power mechanism of the Z shaft, has low cost, and can realize downward movement of the hood through mechanisms such as the push-pull electromagnet to realize reading and practical functions; the first mounting block and the second mounting block are hermetically mounted to form a darkroom structure, so that stray light is prevented from being incident to a detection window of the photomultiplier tube, and accurate reading is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an assembly schematic diagram of the guide bar according to the embodiment of the present invention.
Fig. 3 is a schematic view of a top cover structure according to an embodiment of the present invention.
Fig. 4 is an assembly schematic diagram of the push-pull electromagnet and the ejector block according to the embodiment of the present invention.
In the figure, the photoelectric mounting block 1, the mounting plate 2, the top block 3, the inclined top 31, the top cover 4, the top cover main body 41, the small wheel groove 42, the push rod via hole 44, the small wheel 45, the large via hole 46, the push-pull electromagnet 5, the push rod 51, the first mounting block 6, the pressing plate 71, the head cover 72, the guide rod 73, the anti-collision spring 74, the cone 76, the compression spring 77, the spherical member 78, the guide rod fixing screw 79, the second mounting block 8 and the light-shielding tube 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 4, a detecting head for a chemiluminescence detector, the photoelectric mounting block comprises a photoelectric mounting block 1 internally provided with an end face type photomultiplier, a hollow first mounting block 6 and a hollow second mounting block 8 which are fixedly arranged on the front end face of the photoelectric mounting block 1 from top to bottom in sequence, a mounting plate 2 which is arranged on the upper end face of the photoelectric mounting block 1 and extends forwards, a pressing plate 71 arranged between the mounting plate 2 and the first mounting block 6, a spherical surface part 78 arranged on the pressing plate 71, a head cover 72 arranged below the second mounting block 8, a light shielding pipe 9 of which the lower end is connected with the head cover 72 and the upper end is always positioned in the second mounting block 8, an optical fiber of which the lower end is arranged in the light shielding pipe 9 and the upper end sequentially penetrates through the light shielding pipe 9 and the second mounting block 8 and faces a measuring window of the photomultiplier, a guide rod 73 of which the upper end is connected with the pressing plate 71 and the lower end is connected with the head cover 72, and a compression spring 77 which is sleeved on the guide rod 73 and positioned between the pressing plate 71 and the first mounting;
the front part of the mounting plate 2 is provided with a push-pull electromagnet 5, the top end of a push rod 51 of the push-pull electromagnet 5 is provided with an ejector block 3, an inclined top part 31 is arranged below the ejector block 3, the inclined top part 31 is abutted against a spherical part 78 and can drive the spherical part 78 to displace downwards under the driving of the push-pull electromagnet 5.
Preferably, as shown in fig. 1 and 2, the lower portion of the hood 72 has a conical head 76 in the shape of a frustum, and when the hood 72 is moved downward for reading, the conical head 76 partially enters and closes the plate hole of the microplate.
Specifically, as shown in fig. 1 and 2, the guide rod 73 has internal threads at both ends thereof and is screwed to the presser plate 71 and the head cover 72 by guide rod fixing screws 79, respectively.
Preferably, as shown in fig. 1 and 2, a bump spring 74 is sleeved on the guide rod 73 between the second mounting block 8 and the head cover 72, and a snap spring for limiting the highest position of the bump spring 74 is arranged at the uppermost end of the bump spring 74, so as to prevent the head cover 72 from being excessively displaced upwards and colliding with the second mounting block 8 when the compression spring 77 is reset by losing the pressure of the top block 3.
Specifically, as shown in fig. 1 and 2, in a natural state where the pressing plate 71 is not pressed, a distance between the capture spring and the lower end surface of the second mounting block 8 is H1, a downward displacement distance of the spherical surface piece 78 driven by the top block 3 is H2, and a distance between H1 and H2 is 1-2 mm, which is a reserved collision-proof distance.
The purpose of the spherical member 78 is to reduce the contact area with the slanted top portion 31 to reduce frictional resistance, and the spherical member 78 is a cap nut or a ball stud, and preferably, the spherical member 78 is a ball stud.
Preferably, as shown in fig. 1 and 3, due to the existence of the elastic force of the compression spring 77, the top block 3 tends to shift upward when the spherical member 78 is pressed, in order to prevent the top block 3 from shifting obliquely upward, the mounting plate 2 is provided with the top cover 4, the top cover 4 is provided with a push rod through hole 44 for the push rod 51 to pass through, and a top block accommodating groove for partially accommodating the top block 3, the upper groove wall of the top block accommodating groove is provided with a small wheel groove 42 extending along the push rod 51 direction, a small wheel 45 is arranged in the small wheel groove 42, the lower surface of the small wheel 45 abuts against the upper end surface of the top block 3, that is, the top block 3 is pressed by the small wheel 45 so as to ensure that the top block 3 is shifted substantially in the horizontal direction all the time.
Specifically, as shown in fig. 1, the front portion of the mounting plate 2 is provided with a large through hole corresponding to the push rod 51 and the top block 3, so as to facilitate the push rod 51 to penetrate into the top cover main body 41 and the top block 3 to penetrate out of the top cover main body 41.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a chemiluminescence detector is with detecting head which characterized in that: comprises a photoelectric mounting block (1) internally provided with an end face type photomultiplier, a hollow first mounting block (6) and a hollow second mounting block (8) which are fixedly arranged on the front end face of the photoelectric mounting block (1) from top to bottom in sequence, a mounting plate (2) which is arranged on the upper end face of the photoelectric mounting block (1) and extends forwards, a pressing plate (71) arranged between the mounting plate (2) and the first mounting block (6), a spherical part (78) arranged on the pressing plate (71), a head cover (72) arranged below the second mounting block (8), a light avoiding tube (9) of which the lower end is connected with the head cover (72) and of which the upper end is always positioned in the second mounting block (8), an optical fiber of which the lower end is arranged in the light avoiding tube (9) and of which the upper end sequentially passes through the light avoiding tube (9) and the second mounting block (8) and faces a measuring window of the photomultiplier, a guide rod (73) of which the upper end is connected with the pressing plate (71) and of which the lower end is connected with the head cover (72, A compression spring (77) sleeved on the guide rod (73) and positioned between the pressing plate (71) and the first mounting block (6);
the front portion of mounting panel (2) is provided with plug-type electro-magnet (5), the top of push rod (51) of plug-type electro-magnet (5) is provided with kicking block (3), be equipped with below kicking block (3) oblique top (31), oblique top (31) with spherical surface spare (78) butt can order about spherical surface spare (78) downwards under the drive of drawing formula electro-magnet (5) and take place the displacement.
2. The detecting head for a chemiluminescent detector according to claim 1 wherein: the utility model discloses a helmet, including first installation piece (8) and hood (72), be equipped with anticollision spring (74) on guide bar (73) between second installation piece (8) and hood (72) the cover, the top of anticollision spring (74) is provided with the jump ring that is used for spacing anticollision spring (74) highest position.
3. The detecting head for a chemiluminescent detector according to claim 2 wherein: in a natural state that the pressing plate (71) is not pressed, the distance between the clamp spring and the lower end face of the second mounting block (8) is counted as H1, the downward displacement distance of the spherical piece (78) driven by the top block (3) is counted as H2, and the distance between H1 and H2 is 1-2 mm.
4. The detecting head for a chemiluminescent detector according to claim 1 wherein: the spherical member (78) is a cap nut or a ball stud.
5. The detecting head for a chemiluminescent detector according to claim 1 wherein: be provided with on mounting panel (2) and be used for preventing top cap (4) of kicking block (3) skew upwards, be provided with in top cap (4) and be used for push rod via hole (44) that push rod (51) passed, be used for the kicking block storage tank of part holding kicking block (3), be provided with on the last cell wall of kicking block storage tank along little race (42) that push rod (51) direction extended, be provided with in little race (42) steamboat (45), below and the up end butt of kicking block (3) of steamboat (45).
6. The detecting head for a chemiluminescent detector according to claim 1 wherein: the front part of the mounting plate (2) is provided with a large through hole corresponding to the push rod (51) and the ejector block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920893835.2U CN210322802U (en) | 2019-06-14 | 2019-06-14 | Detection head for chemiluminescence detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920893835.2U CN210322802U (en) | 2019-06-14 | 2019-06-14 | Detection head for chemiluminescence detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322802U true CN210322802U (en) | 2020-04-14 |
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ID=70143730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920893835.2U Active CN210322802U (en) | 2019-06-14 | 2019-06-14 | Detection head for chemiluminescence detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322802U (en) |
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2019
- 2019-06-14 CN CN201920893835.2U patent/CN210322802U/en active Active
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