CN210571970U - Raman spectrometer with safety lock - Google Patents

Abstract

The utility model relates to the technical field of detection equipment, in particular to a Raman spectrometer with a safety lock, which comprises a shell, wherein a laser and a power supply for supplying power to the laser are arranged in the shell, a power supply circuit between the power supply and the laser is connected with a locking switch in series, and the locking switch is used for controlling the power supply circuit to be an open circuit or a broken circuit; and a control switch for controlling the locking switch to be turned on or off is arranged on the outer side of the shell. The utility model discloses a be equipped with locking switch and control switch on the raman spectroscopy appearance for the realization is to laser instrument supply circuit's control, and the laser instrument only just allows laser emission under the state of opening at locking switch, and when locking switch was under the state of closing, the unable laser emission of laser instrument, thereby reduces the risk of spurious triggering, provides the safety in utilization.

Description

Raman spectrometer with safety lock

Technical Field

The utility model relates to a check out test set technical field particularly, relates to a raman spectroscopy appearance with safety lock.

Background

The Raman spectrometer is a product which can be used in spectral imaging and is convenient to use in detection activities, realizes substance component identification by exciting and checking the Raman spectrum of a substance, has quick and accurate detection performance because sample preparation is not needed, is widely applied to optical aspects such as physics and chemical laboratories of scientific research institutions and higher schools, biological and medical fields and the like, and researches on judgment and confirmation of substance components; and the method can also be applied to criminal investigation and jewelry industries for detecting drugs and identifying gems. The instrument is known for its simple structure, simple operation, fast, efficient and accurate measurement, and low wave number measurement capability; the confocal light path design is adopted to obtain higher resolution, micron-scale micro-area detection can be carried out on the surface of a sample, and microscopic image measurement can also be carried out by using the micro-area detection. With the development of semiconductor lasers and refrigeration type CCD detectors, the traditional Raman spectrometer with large volume can be held by hands.

Because the light source of the raman spectrometer is laser under a certain wavelength, the laser has strong radiation, if the emitted laser irradiates on an operator, safety risk can be generated, the raman spectrometer in the prior art often triggers a detection switch by mistake, and the potential safety hazard of sudden irradiation of the laser is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a raman spectroscopy appearance with safety lock.

According to the technical scheme, the Raman spectrometer with the safety lock comprises a shell, wherein a laser and a power supply for supplying power to the laser are arranged in the shell,

a power supply circuit between the power supply and the laser is connected with a locking switch in series, and the locking switch is used for controlling the power supply circuit to be on or off;

and a control switch for controlling the locking switch to be turned on or off is arranged on the outer side of the shell.

Furthermore, the Raman spectrometer with the safety lock further comprises a sample cell and a cover, wherein the cover is used for closing an opening of the sample cell, the control switch comprises a first connecting piece arranged on the cover, a second connecting piece is arranged on the sample cell, and the first connecting piece can be matched and locked with the second connecting piece in a locking mode under the condition that the cover closes the opening.

Further, the first connecting piece is a permanent magnet, and the second connecting piece is a magnetizer.

Further, locking switch includes stiff end, expansion end and elastic component under the elastic force effect of elastic component, the expansion end has and keeps away from the trend of stiff end, locking switch is just right the magnetizer, the expansion end is ferromagnetic material, it makes to have after the magnetizer is magnetized the expansion end lean on to the trend of stiff end.

Further, the Raman spectrometer with the safety lock further comprises a sample bottle, the sample bottle can be placed in the sample cell in a matched mode, and after the first connecting piece is connected with the second connecting piece in a matched and locked mode, the sample bottle is fixed between the bottom of the sample cell and the cover.

Furthermore, the sample cell is located inside the shell and the opening of the sample cell is located at one end of the shell, a light-passing window is formed in the bottom of the sample cell, a first detection objective of the Raman spectrometer is located in the shell and is right opposite to the light-passing window, and one focus of the first detection objective is located in the sample cell.

Furthermore, the lid is including the portion of inserting, first locking portion and the handheld portion that connect gradually, the opening part of sample cell is provided with the fixed plate, first connecting piece sets up first locking portion orientation one side of fixed plate, the second connecting piece sets up the fixed plate orientation one side of first locking portion, the portion of inserting with the inside cavity of sample cell is cylindricly.

Furthermore, the surface of the insertion part is provided with at least one protrusion, the inner wall of the sample cell is provided with a mounting groove matched with the protrusion, the mounting groove extends axially from the opening, and the extending length is the distance between the protrusion and the first locking part.

Furthermore, a sliding groove which is formed along the circumferential direction of the inner wall of the sample cell is formed in one end, far away from the opening, of the mounting groove, the protrusion can slide in the sliding groove in the rotation process of the cover along the axis, and the central angle between the protrusion and the first connecting piece is half of the central angle between the mounting groove and the second connecting piece.

Furthermore, a first rubber ring is sleeved on the insertion part.

The utility model discloses a be equipped with locking switch and control switch on the raman spectroscopy appearance for the realization is to laser instrument supply circuit's control, and the laser instrument only just allows laser emission under the state of opening at locking switch, and when locking switch was under the state of closing, the unable laser emission of laser instrument, thereby reduces the risk of spurious triggering, provides the safety in utilization.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and further features, objects, and advantages of the invention will become apparent. The drawings of the illustrative embodiments and their description are provided to explain the present invention and do not constitute an undue limitation on the invention. In the drawings:

fig. 1 schematically shows a structural reference diagram of a raman spectrometer according to the present invention;

fig. 2 is a schematic structural reference diagram of the raman spectrometer locking switch of the present invention;

fig. 3 is a schematic top view of the sample cell portion of the raman spectrometer of the present invention;

3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 3 3; 3

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 6 is a schematic perspective view of the cover of the present invention;

FIG. 7 is a schematic diagram of a sample bottle according to the present invention;

fig. 8 schematically shows a front view of a lid according to the present invention;

fig. 9 is a schematic view of a reference view of the cap in use according to the present invention;

FIG. 10 is a cross-sectional view taken at C-C of FIG. 4; and

fig. 11 schematically shows a structure diagram of an optical path inside the raman spectrometer of the present invention.

In the figure:

1. a housing; 2. a sample cell; 201. an opening; 202. a light-transmitting window; 203. a second connecting member; 204. a fixing plate; 205. mounting grooves; 206. a chute; 3. a sample bottle; 4. a cover; 401. a suction cup; 402. a first connecting member; 403. an insertion portion; 404. a first locking section; 405. a hand-held portion; 406. a protrusion; 407. a first rubber ring; 5. an optical path component; 501. a first detection objective lens; 502. a laser; 503. a first collimating lens; 504. a first optical filter; 505. a dichroic mirror; 506. a second optical filter; 507. a second collimating lens; 6. a spectrometer host; 7. a power source; 8. a locking switch; 801. a fixed end; 802. a movable end; 803. an elastic member.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below 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 efforts shall belong to the protection scope of the present invention.

It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings are intended to cover non-exclusive inclusions, such that a system, product or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

In the present invention, the terms "upper", "lower", "inner", "middle", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to the raman spectrometer with the safety lock provided by the technical scheme, as shown in fig. 1 and 2, the raman spectrometer comprises a shell 1, a laser 502 and a power supply 7 for supplying power to the laser 502 are arranged in the shell 1, a locking switch 8 is connected in series with a power supply circuit between the power supply 7 and the laser 502, and the locking switch 8 is used for controlling the power supply circuit to be on or off; a control switch for controlling the locking switch 8 to be turned on or off is arranged outside the housing 1. The utility model discloses be equipped with locking switch 8 and control switch on the raman spectrometer for the realization is to the control of laser 502's supply circuit, and laser 502 only just allows the lasing at locking switch 8 under the state of opening, and locking switch 8 is when the state of closing, and laser 502 can't launch laser, thereby reduces the risk of spurious triggering, provides the security of using, and control switch is used for operating personnel to control locking switch 8's state.

In some embodiments, as shown in fig. 1, the raman spectrometer with safety lock further comprises a sample cell 2 and a lid 4, the lid 4 being used to close an opening 201 of the sample cell 2. As a specific implementation manner, as shown in fig. 2 to 6, the control switch includes a first connecting member 402 disposed on the cover 4, and the sample cell 2 is provided with a second connecting member 203, and the first connecting member 402 can be in matching locking connection with the second connecting member 203 in a state that the cover 4 closes the opening 201. Lid 4 is used for sealing opening 201, can block completely that light among the external environment enters into sample cell 2 to the effect through lid 4 can carry out spacingly with the sample bottle of placing in sample cell 2, makes it be located sample cell 2 in, improves the fixed effect of sample bottle in sample cell 2, improves detection effect. In case the first connector 402 and the second connector 203 are in a mating locking connection, a stable connection of the lid 4 in the opening 201 is achieved, making the sealing even tighter.

In some embodiments, the first connecting member 402 is a permanent magnet, and the second connecting member 203 is a magnetizer, and the magnetic connection is easy to implement. As shown in fig. 2, the locking switch 8 includes a fixed end 801, a movable end 802, and an elastic member 803, under the elastic force of the elastic member 803, the movable end 802 has a tendency to move away from the fixed end 801, the locking switch 8 faces the magnetic conductor, the movable end 802 is made of a ferromagnetic material, and the magnetic conductor is magnetized to have a tendency to move the movable end 802 toward the fixed end 801. The locking switch 8 is controlled by the cooperation of the first connecting piece 402 and the second connecting piece 203, in a specific using process, when the first connecting piece 402 and the second connecting piece 203 are in an unconnected state, under the action of elastic force of the elastic piece 803, the movable end 802 is far away from the fixed end 801, at the moment, the locking switch 8 is in a closed state, the laser 502 has no power supply, and the function of emitting laser cannot be realized; when the first connecting piece 402 is connected with the second connecting piece 203, because the first connecting piece 402 is a permanent magnet and the second connecting piece 203 is a magnetizer, the magnetizer is magnetized by the permanent magnet and has magnetism, the movable end 802 of the movable switch 8 facing the magnetizer is magnetized by the magnetizer and is attracted by the ferromagnetic material, so that the movable end 802 and the fixed end 801 are connected by overcoming the elastic force of the elastic piece 803, the locking switch 8 is in an open state, the power supply circuit of the laser 502 is allowed to be conducted, and an operator can control the laser 502 to work through the switch at the moment; when the first connecting piece 402 and the second connecting piece 203 are disconnected from each other, the magnetism of the magnetizer disappears, the magnetizer does not have attraction to the movable end 802, the movable end 802 is far away from the fixed end 801 under the action of the elastic force of the elastic piece 803, and the movable end 802 is disconnected from the fixed end 801, so that the locking switch 8 is in a closed state, the power supply circuit of the laser 502 is in an open circuit, and the laser cannot be turned on. The state that this embodiment is ingenious to be connected lid 4 and sample cell 2 finishes corresponds with the on state of locking switch 8 to realize the automatic opening that realizes locking switch 8 after lid 4 and sample cell 2 accordant connection, avoided lid 4 not to install good and the work of spurious triggering laser 502. Normally, after the sample is put into the sample cell, the preparation work for measurement is already done, the cover 4 is covered to close the sample cell 2 and fix the sample, which belongs to the preparation work of the last step of measurement, and the locking switch 8 is opened through the matching connection of the cover 4 and the sample cell 2, so that the rationality and the continuity of the operation of the device are realized.

In some embodiments, the sample cell 2 is located inside the housing 1, the opening 201 of the sample cell 2 is located at one end of the housing 1, the light-passing window 202 is formed at the bottom of the sample cell 2, the first detection objective 501 of the raman spectrometer is located in the housing 1 and faces the light-passing window 202, and one focus of the first detection objective 501 is located in the sample cell 2. The raman spectrometer sample cell 2 that this embodiment provided is sunken to be set up inside the spectrum appearance, can place the sample bottle that contains the liquid sample that awaits measuring in sample cell 2 and detect, and overall structure is simple, need not complicated auxiliary member, because sample cell 2 is the sunken setting in the major structure, can realize natural light-resistant, the influence of light signal in the effectual solution environment to the test result. For example, as shown in fig. 1 and 7, the raman spectrometer with safety lock further comprises a sample bottle 3, the sample bottle 3 can be placed in the sample cell 2 in a matching way, and after the first connecting piece 402 is connected with the second connecting piece 203 in a matching and locking way, the sample bottle 3 is fixed between the bottom of the sample cell 2 and the cover 4. Through the structure assorted sample bottle 3 that uses shape and sample cell 2, perhaps suit sample cell 2's structural design with sample bottle 3's structure for can be effectual fixed after sample bottle 3 puts into sample cell 2, thereby realize the location and the fixing to sample bottle 3, make sample bottle and raman spectroscopy keep relative still, avoid the vibration of sample bottle to lead to the fact the influence to the test result.

In some embodiments, as shown in fig. 3 to 6 and 8, the cover 4 includes an insertion portion 403, a first locking portion 404 and a handle portion 405 connected in sequence, the fixing plate 204 is disposed at the opening 201 of the sample cell 2, the first connecting member 402 is disposed on a side of the first locking portion 404 facing the fixing plate 204, the second connecting member 203 is disposed on a side of the fixing plate 204 facing the first locking portion 404, and the insertion portion 403 and the internal cavity of the sample cell 2 are cylindrical. The insertion part 403 is used for matching with the inner cavity of the sample cell, and the first locking part 404 is used for abutting against the fixing plate 204 to limit the position of the cover 4 and the sample cell 2 in the insertion direction, at this time, the insertion part 403 is completely inserted into the cavity of the sample cell 2, and the insertion depth of the cover 4 is limited; the hand-held portion 405 is intended to be held by an operator and may have a planar shape as shown to facilitate hand pinching and control. In the use, the operating personnel holds handheld portion 405 through the hand and inserts the inside cavity of sample cell 2 with insertion portion 403 through opening 201 for it is spacing that first locking portion 404 and fixed plate 204 laminate, and then the position of adjustment first connecting piece 402 through rotating handheld portion 404 makes it just to second connecting piece 203, realizes the accordant connection of first connecting piece 402 and first connecting piece 203, and then realizes that the matching of lid 4 and sample cell 2 is fixed.

As shown in fig. 6, 8 and 9, in some embodiments, the bottom end of the cover 4 is provided with a suction cup 401, the suction cup 401 is used for sucking the sample bottle 3, and the cover of the sample bottle 3 can be sucked by the suction cup 401 on the cover 4 and put into the sample cell 2 or taken out of the sample cell 2. In addition, after the opening 201 is closed by the cover 4, the sample bottle 3 is pressed and limited in the sample cell 2 under the action of the cover 4, and the sucker 401 can play a role of buffering between the cover 4 and the sample bottle 3 due to the fact that the sucker 401 is made of elastic materials.

In some embodiments, as shown in fig. 3 to 6 and 8, the surface of the insertion portion 403 is provided with at least one protrusion 406, the inner wall of the sample cell 2 is formed with a mounting groove 205 matching with the protrusion 406, the mounting groove 205 extends from the opening 201 along the axial direction, and the extending length is the distance between the protrusion 406 and the first locking portion 404. Spacing accuracy in the installation process can be further improved through the cooperation of the protrusion 406 and the installation groove 205, specifically, the design can be made such that when the map area 406 is aligned with the installation groove, the first connecting piece 402 and the second connecting piece 203 are also in a state of being aligned with each other, as the protrusion 406 is gradually inserted along the installation groove 205, the first locking portion 404 gradually leans against the fixing plate 204, and since the extension length of the installation groove 205 from the opening 201 along the axis is the distance between the protrusion 406 and the first locking portion 404, after the protrusion 406 is inserted to the bottom of the installation groove 205, the first locking portion 404 is just attached to the fixing plate 204, so that the matching connection between the first connecting piece and the second connecting piece is realized, finally, the positioning of the cover 4 in the circumferential direction is realized through the cooperation of the installation groove 205 and the protrusion 406, and the positioning of the cover 4 in the axial direction and the circumferential direction is realized through the cooperation of.

In some embodiments, as shown in fig. 4, 5 and 10, a sliding groove 206 is formed at one end of the mounting groove 205 away from the opening 201, the sliding groove 206 is formed along the circumferential direction of the inner wall of the sample cell 2, the protrusion 406 can slide in the sliding groove 206 during the rotation of the cover 4 along the axis, the rotation center line of the cover is taken as the axis, that is, the rotation center line of the cylindrical cavity in the sample cell is taken as the axis, and the central angle between the protrusion 406 and the first connecting piece 402 is half of the central angle between the mounting groove 205 and the second connecting piece 203. The sliding groove 206 is matched with the protrusion 406 to realize the axial positioning of the cover, and the arrangement mode greatly improves the connection stability because the interference factor of the cover disengaging along the axial direction is stronger in the use process. The central angle between the protrusion 406 and the first connecting piece 402 is half of the central angle between the mounting groove 205 and the second connecting piece 203, that is, the central angle corresponding to the sliding groove 206, so that after the protrusion 406 rotates to the end of the sliding groove 206, the first connecting piece 402 just rotates to the position of the second connecting piece 203, and matching connection is achieved.

In some embodiments, as shown in fig. 6, the first rubber ring 407 is sleeved on the insertion portion 403, so that the cover 4 can be connected with the sample cell 2 more tightly and firmly.

Specifically, as shown in fig. 1 and 11, the raman spectrometer further includes a light path component 5 and a spectrometer host 6, the light path component 5 is configured to generate laser and focus the laser on a sample to be measured, and then converge raman scattering light of the sample to be measured into the spectrometer host 6, and the spectrometer host 6 is configured to detect the raman scattering light to obtain a raman spectrum. As an optional implementation manner, the optical path component 5 includes a laser 502, a first collimating lens 503, a first optical filter 504, a dichroic mirror 505, a second optical filter 506, a second collimating lens 507, and a first detection objective lens 501; laser emitted by the laser 502 passes through the first collimating lens 503 and the first optical filter 504 in sequence, is reflected by the dichroic mirror 505, and is focused on a sample to be detected through the first detection objective lens 502; the raman scattered light generated after the laser excites the sample to be measured passes through the second optical filter 506 after being transmitted by the dichroic mirror 505, and then enters the spectrometer host 6 after being converged by the second collimating lens 507. As an alternative implementation, the spectrometer mainframe 6 comprises a grating and a CCD detector.

It should be noted that the raman spectrometer according to the above embodiment may further include other necessary components or structures such as a control component, a display component, and a communication component, and the corresponding arrangement position and connection relationship can refer to the raman spectrometer in the prior art, and the connection relationship, operation, and working principle of each un-mentioned structure are known to those skilled in the art and will not be described in detail herein.

Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. Raman spectrometer with safety lock, comprising a housing (1), a laser (502) and a power supply (7) for supplying power to the laser (502) are arranged in the housing (1),

a locking switch (8) is connected in series with a power supply circuit between the power supply (7) and the laser (502), and the locking switch (8) is used for controlling the power supply circuit to be on or off;

and a control switch for controlling the locking switch (8) to be turned on or off is arranged on the outer side of the shell (1).

2. Raman spectrometer with safety lock according to claim 1, further comprising a sample cell (2) and a cover (4), said cover (4) being adapted to close an opening (201) of said sample cell (2), said control switch comprising a first connector (402) arranged on said cover, said sample cell (2) being provided with a second connector (203), said first connector (402) being adapted to be lockingly connected to said second connector (203) in a state in which said cover (4) closes said opening.

3. Raman spectrometer with safety lock according to claim 2, characterized in that said first connector (402) is a permanent magnet and said second connector (203) is a magnetizer.

4. The Raman spectrometer with the safety lock according to claim 3, wherein the locking switch (8) comprises a fixed end (801), a movable end (802) and an elastic member (803), the movable end (802) has a tendency to move away from the fixed end (801) under the elastic force of the elastic member (803), the locking switch (8) faces the magnetic conductor, the movable end (802) is made of a ferromagnetic material, and the magnetic conductor is magnetized to have a tendency to make the movable end (802) approach the fixed end (801).

5. Raman spectrometer with safety lock according to claim 3, further comprising a sample vial (3), said sample vial (3) being fittable inside said cuvette (2), said sample vial (3) being fixed between the bottom of said cuvette (2) and said lid (4) after said first connector (402) and said second connector (203) are fittingly locked together.

6. Raman spectrometer with safety lock according to claim 5, characterized in that said sample cell (2) is located inside said housing (1) and said opening (201) of said sample cell (2) is located at one end of said housing (1), said sample cell (2) has a light-transmitting window (202) opened at the bottom, a first detection objective (501) of the Raman spectrometer is located inside said housing (1) and opposite to said light-transmitting window (202), and a focus of said first detection objective (501) is located inside said sample cell (2).

7. Raman spectrometer with safety lock according to claim 2, characterized in that said cover (4) comprises an insertion portion (403), a first locking portion (404) and a hand-held portion (405) connected in sequence, a fixing plate (204) is provided at the opening (201) of said sample cell (2), said first connection member (402) is provided at the side of said first locking portion (404) facing said fixing plate (204), said second connection member (203) is provided at the side of said fixing plate (204) facing said first locking portion (404), said insertion portion (403) and the internal cavity of said sample cell (2) are both cylindrical.

8. Raman spectrometer with safety lock according to claim 7, characterized in that the surface of the insertion portion (403) is provided with at least one protrusion (406), the inner wall of the cuvette (2) being formed with a mounting groove (205) matching the protrusion (406), the mounting groove (205) extending axially from the opening (201) for the distance between the protrusion (406) and the first locking portion (404).

9. The Raman spectrometer with the safety lock according to claim 8, wherein a sliding groove (206) formed along the circumferential direction of the inner wall of the sample cell (2) is formed at one end of the mounting groove (205) far away from the opening (201), the protrusion (406) can slide in the sliding groove (206) during the rotation of the cover (4) along the axis, and the central angle between the protrusion (406) and the first connecting piece (402) is half of the central angle between the mounting groove (205) and the second connecting piece (203).

10. The Raman spectrometer with the safety lock of claim 8,

a first rubber ring (407) is sleeved on the insertion part.

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