CN210639076U

CN210639076U - Cell frame for ultraviolet spectrophotometer

Info

Publication number: CN210639076U
Application number: CN201921098163.2U
Authority: CN
Inventors: 熊梓言
Original assignee: Wuhan Focused Photonics Testing Co ltd
Current assignee: Wuhan Focused Photonics Testing Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-05-29
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a cell frame for ultraviolet spectrophotometer relates to photometer technical field, is the pull formula usually for solving current cell frame, needs manual operation, and because of the relation of pull formula, needs to reserve out and remove the space, so generally only be provided with four fixed slots, detect the less problem of quantity. The base is installed to the below of swivel mount, the inside of swivel mount is provided with the cell fixed slot, and the cell fixed slot is provided with six, install step motor on the preceding terminal surface of base, the inside of base is provided with the toothed disc, one side of toothed disc is provided with the worm, the bearing is installed to the one end of worm, the below of toothed disc is provided with the toothed disc positioning seat, the top of toothed disc is provided with the pivot, and the one end of pivot runs through and extends to the inside of swivel mount, pivot fixing base and swivel mount fixed connection are passed through in the pivot.

Description

Cell frame for ultraviolet spectrophotometer

Technical Field

The utility model relates to a photometer technical field specifically is a cell frame for ultraviolet spectrophotometer.

Background

A spectrophotometer is an instrument for performing quantitative and qualitative analysis of a substance by using a spectrophotometric method. The spectrophotometric method is to perform qualitative and quantitative analysis on a substance to be measured by measuring the absorbance of the substance at a specific wavelength or within a certain wavelength range. The selective absorption wavelength of a substance to light, and the corresponding absorption coefficient, are the physical constants of that substance. When the absorption coefficient of a pure substance under a certain condition is known, the sample can be prepared into a solution under the same condition, and the absorption degree of the solution is measured, so that the content of the substance in the sample can be calculated by the formula. In the visible light region, except some substances which absorb light, many substances do not absorb the light, but a color reagent can be added under certain conditions or the visible light region is processed to develop color and then measured, so the method is also called colorimetric analysis. The cuvette is used for containing reference liquid and sample liquid and is matched with the spectral analysis instrument.

However, the conventional cuvette holder for the ultraviolet spectrophotometer is usually in a drawing type and needs manual operation, and due to the drawing type relation, the cuvette holder needs to move back and forth, a moving space needs to be reserved, so that only four fixing grooves are generally arranged, and the detection quantity is small; therefore, the existing requirements are not met, and a cuvette holder for an ultraviolet spectrophotometer is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultraviolet is cell frame for spectrophotometer to the current cell frame that provides among the above-mentioned background art of solution is the pull formula usually, needs manual operation, and because of the relation of pull formula, needs reserve out the removal space, so generally only be provided with four fixed slots, detect the less problem of quantity.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an ultraviolet is cell frame for spectrophotometer, includes the swivel mount, the base is installed to the below of swivel mount, the inside of swivel mount is provided with the cell fixed slot, and the cell fixed slot is provided with six, install step motor on the preceding terminal surface of base, the inside of base is provided with the toothed disc, one side of toothed disc is provided with the worm, the bearing is installed to the one end of worm, the below of toothed disc is provided with the toothed disc positioning seat, the top of toothed disc is provided with the pivot, and the one end of pivot runs through and extend to the inside of swivel mount, pivot fixing base and swivel mount fixed connection are passed through in the pivot.

Preferably, six the inside of cell fixed slot all is provided with the grip block, the grip block passes through spring mechanism and cell fixed slot fixed connection.

Preferably, the outer wall of the rotating frame is provided with six measuring grooves.

Preferably, the output end of the stepping motor is in transmission connection with a worm through a coupler, and the worm is in transmission connection with a gear disc.

Preferably, the stepping motor is fixedly connected with the outer wall of the base through a motor fixing plate.

Preferably, the shock pads are arranged below the base, and the number of the shock pads is four.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the swivel mount, be provided with the cell fixed slot on the swivel mount for fixed cell, change the cell that detects through rotatory mode, compare with the pull formula, need not reserve unnecessary space, the inside space occupancy of photometer is big, so can set up more cell fixed slots on the swivel mount.

2. Through setting up step motor, step motor is an actuating mechanism who turns into the digital pulse signal angular displacement, and the rotation angle that sets up step motor is sixty degrees, makes it through worm mechanism and swivel mount transmission, drives its rotation to change the cell that detects light department, need not to change labour saving and time saving through the mode of artifical pull.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal transmission structure of the present invention;

FIG. 3 is a front view of the present invention;

in the figure: 1. a rotating frame; 2. a base; 3. a cuvette fixing groove; 4. a spring mechanism; 5. a clamping plate; 6. a rotating shaft fixing seat; 7. a rotating shaft; 8. a stepping motor; 9. a motor fixing plate; 10. a bearing; 11. a gear plate; 12. a worm; 13. a coupling; 14. a measuring tank; 15. a shock pad; 16. gear disc positioning seat.

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.

Referring to fig. 1-3, the present invention provides an embodiment: a cuvette holder for an ultraviolet spectrophotometer comprises a rotating frame 1, wherein a base 2 is installed below the rotating frame 1, the base 2 is used for supporting the rotating frame 1, cuvette fixing grooves 3 are formed in the rotating frame 1, six cuvette fixing grooves 3 are formed in the cuvette fixing grooves 3, cuvettes are placed in the cuvette fixing grooves 3, a stepping motor 8 is installed on the front end face of the base 2, the stepping motor 8 adopts a stepping motor 8 with the model of 2301HS20AR10, the stepping motor 8 can be in transmission with a worm 12 mechanism to drive the rotating frame 1 to rotate, a gear disc 11 is arranged inside the base 2, a worm 12 is arranged on one side of the gear disc 11, a bearing 10 is installed at one end of the worm 12, the bearing 10 can ensure the rotation precision of the worm 12, a gear disc positioning seat 16 is arranged below the gear disc 11, the gear disc positioning seat 16 plays a role in positioning and supporting the gear disc 11, a rotating shaft 7 is arranged above the gear disc 11, and the one end of pivot 7 runs through and extends to the inside of swivel mount 1, and pivot 7 passes through pivot fixing base 6 and swivel mount 1 fixed connection, and pivot 7 pivoted can drive swivel mount 1 and rotate simultaneously.

Further, the inside of six cell fixed slots 3 all is provided with grip block 5, and grip block 5 passes through spring mechanism 4 and cell fixed slot 3 fixed connection, and when putting into cell fixed slot 3 with the cell, two grip blocks 5 of inslot can utilize reaction force to grasp the cell because of spring mechanism 4's effect shrink backward, reach fixed effect.

Further, be provided with measurement groove 14 on the outer wall of swivel mount 1, and measurement groove 14 is provided with six, and measurement groove 14 sets up the position in every cell fixed slot 3, makes detection light can see through measurement groove 14 and detect the cell in the contrast cell fixed slot 3.

Further, the output end of the stepping motor 8 is in transmission connection with the worm 12 through the coupler 13, the worm 12 is in transmission connection with the gear disc 11, the output end of the stepping motor 8 can drive the rotating frame 1 to rotate while rotating, the rotating angle is set to sixty degrees, and the next cuvette fixing groove 3 is replaced every time the rotating frame rotates.

Further, step motor 8 passes through motor fixed plate 9 and base 2's outer wall fixed connection, and motor fixed plate 9 can make step motor 8 more firm with base 2's connection, guarantees its stability of operation.

Further, the shock pad 15 is arranged below the base 2, the four shock pads 15 are arranged, the friction force between the base 2 and the contact surface can be increased by the shock pads 15, the shaking frequency of the stepping motor 8 during operation is reduced, and the noise reduction effect is achieved.

The working principle is as follows: during the use, install the cell frame in ultraviolet spectrophotometer, make cell fixed slot 3 and the photometer detection light position parallel and level on rightmost side, afterwards, place the cell in proper order in cell fixed slot 3, 3 inside grip block 5 that are provided with in cell fixed slot, grip block 5 can rely on the reaction force contrast color cell of spring mechanism 4 to fix, prevent that its rotatory in-process after from empting, fixed back, start the photometer, detection light in the photometer can see through measuring groove 14 on 1 rightmost side of swivel mount, detect the cell in the groove, detect the back that finishes, can start step motor 8, control swivel mount 1 clockwise turning sixty degrees, thereby it detects to next cell fixed slot 3, and is convenient and fast.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an ultraviolet is cell frame for spectrophotometer, includes swivel mount (1), its characterized in that: base (2) are installed to the below of swivel mount (1), the inside of swivel mount (1) is provided with cell fixed slot (3), and cell fixed slot (3) are provided with six, install step motor (8) on the preceding terminal surface of base (2), the inside of base (2) is provided with toothed disc (11), one side of toothed disc (11) is provided with worm (12), bearing (10) are installed to the one end of worm (12), the below of toothed disc (11) is provided with toothed disc positioning seat (16), the top of toothed disc (11) is provided with pivot (7), and the one end of pivot (7) runs through and extends to the inside of swivel mount (1), pivot (7) are through pivot fixing base (6) and swivel mount (1) fixed connection.

2. A cell holder for an ultraviolet spectrophotometer according to claim 1, wherein: six the inside of cell fixed slot (3) all is provided with grip block (5), grip block (5) are through spring mechanism (4) and cell fixed slot (3) fixed connection.

3. A cell holder for an ultraviolet spectrophotometer according to claim 1, wherein: the outer wall of the rotating frame (1) is provided with six measuring grooves (14), and the number of the measuring grooves (14) is six.

4. A cell holder for an ultraviolet spectrophotometer according to claim 1, wherein: the output end of the stepping motor (8) is in transmission connection with a worm (12) through a coupler (13), and the worm (12) is in transmission connection with a gear disc (11).

5. A cell holder for an ultraviolet spectrophotometer according to claim 1, wherein: the stepping motor (8) is fixedly connected with the outer wall of the base (2) through a motor fixing plate (9).

6. A cell holder for an ultraviolet spectrophotometer according to claim 1, wherein: the shock absorption device is characterized in that four shock absorption pads (15) are arranged below the base (2), and the number of the shock absorption pads (15) is four.