CN211148427U

CN211148427U - High-precision ultraviolet spectrophotometer

Info

Publication number: CN211148427U
Application number: CN201921763041.0U
Authority: CN
Inventors: 曹艳; 黄云涛
Original assignee: Jiangsu Guotai Environmental Monitoring Co ltd
Current assignee: Jiangsu Guotai Environmental Monitoring Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-31
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to an ultraviolet spectrophotometer of high accuracy, it includes the instrument body, set up the detection room on the instrument body, place the cell in the detection room, it is equipped with the base that is used for laying the cell to slide in the detection room, the glide direction along the base is equipped with the pull rod on the lateral wall of detection room, the both sides that lie in the base on the diapire of detection room are equipped with fixed cover, the one end that is close to the base in the fixed cover is equipped with the steel ball, be equipped with in the fixed cover and be used for contradicting the spring on the base with the steel ball, the array is equipped with the recess with steel ball complex on the base, the recess is for being less than half of. The utility model discloses have and fix a position through the cell to the difference, ensure that all cells are certain with the position of light source in the detection, and then improve the effect of measuring the accuracy.

Description

High-precision ultraviolet spectrophotometer

Technical Field

The utility model relates to an ultraviolet spectrophotometer field, more specifically says that it relates to an ultraviolet spectrophotometer of high accuracy.

Background

The ultraviolet spectrophotometer is mainly used for measuring the content of a certain substance in a solution. Since each substance has different molecules, atoms and different molecular space structures, the situation of absorbing light energy is not the same, so that each substance has a specific and fixed absorption spectrum curve, and the content of the substance can be judged or measured according to the absorbance at certain characteristic wavelengths on the absorption spectrum.

Chinese patent with publication number CN208140575U discloses an ultraviolet spectrophotometer, which comprises a main body, a liquid crystal display screen fixedly arranged on the outer surface of the upper end of the main body, a wide sample chamber arranged at the position of the upper end of the main body near the middle of the main body, a plurality of cuvettes arranged in the wide sample chamber, and an adjusting rod arranged on the outer surface of the front end of the main body. Firstly, a cuvette for containing solution is placed in a wide sample chamber, a light emitter in a main body irradiates light to the cuvette, substances absorb the light, and the content of a certain substance is measured through the wavelength change of the light. A plurality of cuvettes can be placed in the wide big sample room, adjust the cuvette position in the wide big sample room through adjusting the pole to make the light source shine on the cuvette of difference.

This kind of ultraviolet spectrophotometer, the pulling is adjusted the pole, adjusts the pole and drives different cuvettes and aim at the light source, when the pulling is adjusted the pole, lacks location structure for different cuvettes are in the in-process that removes, can't ensure that each cuvettes all is located same position when the absorption light source, and the cuvettes are different apart from the position of light source, and the absorbed dose of setting a camera also can be different, thereby influences the result that detects.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an ultraviolet spectrophotometer of high accuracy, its advantage is, fixes a position the cell of difference, ensures that all cells are certain with the position of light source in the detection.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an ultraviolet spectrophotometer of high accuracy, includes the instrument body, sets up detection room on the instrument body, places the cell in the detection room, it is equipped with the base that is used for laying the cell to slide in the detection room, the direction of sliding along the base is equipped with the pull rod on the lateral wall of detection room, the both sides that lie in the base on the diapire of detection room are equipped with fixed cover, the one end that is close to the base in the fixed cover is equipped with the steel ball, be equipped with in the fixed cover and be used for contradicting the spring on the base with the steel ball, the array is equipped with the recess with steel ball complex on the base, the recess is for being less than.

Through the technical scheme, the light source of the instrument body emits light and irradiates the cuvette, and the specific substance in the solution absorbs the energy of the light, so that the energy of the light is changed, and the content of the specific position in the solution is further calculated according to the change of the energy of the light. The instrument body is connected with a computer through a data line, and conversion tasks are completed by means of the computer. The plurality of cuvettes can compare the measurement to different solutions, and when the base removed, the recess supported the steel ball for the steel ball breaks away from the recess, and when the steel ball corresponded with next recess, the steel ball was contradicted in the recess in the effect of spring. Therefore, the force of the pull rod pulling the base changes, the changed node position is the position of the next cuvette, and the base senses the node position of the change of the pulling force manually in the sliding process due to the fact that the position of the steel ball is fixed, so that the situation that different cuvettes are the same as the position of the light source in the detection process is guaranteed, and the accuracy of measurement is further improved.

The utility model discloses further set up to: the detection chamber is characterized in that guide plates are fixedly arranged on the bottom wall of the detection chamber and located on two sides of the base along the sliding direction of the base, and the fixing sleeve is fixed on the guide plates.

Through above-mentioned technical scheme, the setting of deflector plays the effect of direction to the base, and the restriction base can only move along the length direction of deflector.

The utility model discloses further set up to: the pull rod is provided with a plurality of steps with gradually reduced diameters, and the length of each step is equal to the center distance between adjacent grooves.

Through above-mentioned technical scheme, because a plurality of cuvettes can number the color cell when measuring, the color cell is located the detecting chamber, can't see, consequently can't confirm specific color cell at the in-process that detects. The step and the cell one-to-one to judge the serial number of the cell being detected through the quantity of the step exposed outside, which is favorable for the experimental data and the cell one-to-one.

The utility model discloses further set up to: and a guide groove matched with the steel ball is horizontally arranged between every two adjacent grooves.

Through above-mentioned technical scheme, the steel ball slides in the guide way, makes the cooperation that the steel ball can be smooth and easy move down a recess through the guide way in, prevents that the base from at the in-process that removes, and the steel ball staggers with the recess.

The utility model is further arranged in that the upper end of the base is rotated with an L-shaped cover plate for shielding the opening of the cuvette, and one end of the base, which is far away from the rotation point of the cover plate, is provided with a locking device for locking the cover plate.

Through above-mentioned technical scheme, because the base is at the in-process that removes, the solution in the cell spills over easily, and the apron is used for the opening seal of cell, prevents that solution from spilling over.

The utility model discloses further set up to: the locking device comprises a T-shaped connecting rod hinged on the cover plate and a clamping seat fixed on the base, and a limiting groove matched with the connecting rod is formed in the clamping seat.

Through above-mentioned technical scheme, locking device is used for locking the apron on the base to prevent apron and cell to break away from.

The utility model discloses further set up to: the clamping seat is provided with a rotating shaft which is rotatably connected to one surface of the clamping seat far away from the base along the length direction of the base, and the rotating shaft is rotatably connected with a limiting rod used for preventing the connecting rod from being separated from the limiting groove.

Through above-mentioned technical scheme, the direction of rotation mutually perpendicular of gag lever post and connecting rod rotates the gag lever post, and the gag lever post blocks the opening of spacing groove to the restriction connecting rod breaks away from the spacing groove.

The utility model discloses further set up to: and one end of the fixed sleeve, which is far away from the steel ball, is in threaded connection with a resisting rod, and two ends of the spring respectively abut against the steel ball and the resisting rod.

Through above-mentioned technical scheme, rotate and support the pole, support the pole and slide in fixed cover to play the effect of adjusting spring elasticity, further make the spring conflict steel ball, the steel ball is contradicted on the base all the time.

To sum up, the utility model discloses following beneficial effect has:

1. the base is positioned by the steel balls in the sliding process, so that the relative positions of different cuvettes and the light source are always unchanged during detection, and the measurement precision is improved;

2. the cover plate is arranged to limit the overflow of the solution in the cuvette;

3. the elasticity of the spring can be adjusted, so that the steel balls can elastically abut against the base all the time.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment.

Fig. 2 is a schematic structural view of the base and the steel ball of the present embodiment.

FIG. 3 is a schematic diagram showing the positional relationship between the base, the L-shaped plate, and the cuvette in this embodiment.

Fig. 4 is a schematic structural view of the locking device of the present embodiment.

Reference numerals: 1. an instrument body; 2. a detection chamber; 21. sealing the cover; 3. a base; 30. a groove; 31. a guide plate; 32. fixing a sleeve; 33. a spring; 34. steel balls; 35. a support rod; 36. a guide groove; 4. a cuvette; 5. a cover plate; 6. a locking device; 61. a connecting rod; 62. a card holder; 63. a limiting groove; 64. a rotating shaft; 65. a limiting rod; 7. a pull rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1, an ultraviolet spectrophotometer of high accuracy includes instrument body 1, sets up detection room 2 on instrument body 1, sets up base 3 in detection room 2, and it has cell 4 to peg graft on base 3, and the solution that awaits measuring holds in cell 4. The light source of the instrument body 1 emits light and irradiates the cuvette 4, and the specific substance in the solution absorbs the energy of the light, so that the energy of the light is changed, and the content of the specific substance in the solution is further calculated according to the energy change of the light. The instrument body 1 is connected to a computer (not shown in the figure) through a data line, and the computer completes the conversion task.

Referring to fig. 1 and 2, four mounting grooves are formed in the upper surface of the base 3, and the cuvettes 4 are placed in the mounting grooves. The light source position of the instrument body 1 is fixed and unchanged, the base 3 is connected to the bottom wall of the detection chamber 2 in a sliding mode, the pull rod 7 is horizontally arranged at the front end of the base 3 along the length direction of the base 3, and the pull rod 7 penetrates through the side wall of the detection chamber 2. When different cuvettes 4 need to be measured, the pull rod 7 is pulled, and the base 3 is driven to move through the pull rod 7, so that the different cuvettes 4 are aligned to the light source position of the instrument body 1. So that a plurality of cuvettes 4 can be measured in comparison. The opening of the detection chamber 2 is rotatably connected with a sealing cover 21, light rays have certain damage to a human body in the measurement process, and the sealing cover 21 is used for shielding the light rays.

Referring to fig. 2, guide plates 31 are disposed on the bottom wall of the detection chamber 2 (see fig. 1) and located on both sides of the base 3, the guide plates 31 are disposed parallel to the pull rod 7, and the guide plates 31 limit the base 3 to only slide along the length direction of the guide plates 31. A fixing sleeve 32 is fixedly arranged on the upper surface of the guide plate 31 along the length direction vertical to the base 3, a steel ball 34 is arranged at one end, close to the base 3, of the fixing sleeve 32, the steel ball 34 is exposed out of the fixing sleeve 32, the exposed part of the steel ball 34 is smaller than half of the body of the steel ball 34, a spring 33 is further arranged in the fixing sleeve 32, and the spring 33 is used for abutting against the steel ball 34 to further enable the steel ball 34 to be abutted against the base 3 all the time. Four grooves 30 matched with the steel balls 34 are arranged on the base 3 in an array mode, and the grooves 30 are smaller than half of the body of each steel ball 34; the grooves 30 correspond one-to-one to the cuvettes 4.

Referring to fig. 1 and 2, when the position of the base 3 needs to be adjusted so that different cuvettes 4 are aligned with the light source in the instrument body 1, the pull rod 7 pulls the base 3 to move, the side wall of the groove 30 will interfere with the steel ball 34, so that the steel ball 34 is retracted into the fixing sleeve 32, and when the next groove 30 corresponds to the steel ball 34, the steel ball 34 will be engaged in the groove 30 under the action of the spring 33; therefore the staff is not the constant force when pulling pull rod 7, and when the change node of appearing power at every turn, this node is the position of next recess 30, sets up like this, guarantees to detect at every turn that the position of different cell 4 and light source is certain, avoids causing the detection data inaccurate because of position error. A guide groove 36 communicated with the groove 30 is horizontally arranged on the base 3, the depth of the guide groove 36 is smaller than that of the groove 30, the steel ball 34 slides in the guide groove 36, and the base 3 can be smoothly butted with the next groove 30 through the guide of the guide groove 36 in the sliding process.

Referring to fig. 1 and 2, a pushing rod 35 is connected to one end of the fixing sleeve 32 far from the steel ball 34 through a screw, one end of the spring 33 pushes against the pushing rod 35, the pushing rod 35 is rotated, and the pushing rod 35 slides in the fixing sleeve 32, so that the elastic force of the spring 33 is adjusted, and the spring 33 can push against the steel ball 34 all the time. The pull rod 7 is provided with a plurality of steps with the diameters being reduced, and the length of each step is equal to the center distance of the adjacent grooves 30. In this way, it can be determined that the number of cuvettes 4 is being measured from the number of steps in which the draw bar 7 is exposed outside the detection chamber 2.

Referring to fig. 3 and 4, in the process of pulling the base 3, the solution in the cuvette 4 overflows due to shaking, so that the L-shaped cover plate 5 is rotatably arranged on the base 3, after the cuvette 4 is placed on the base 3, the cover plate 5 is rotated, the horizontal end of the cover plate 5 is attached to the upper end face of the cuvette 4, so that the upper end opening of the cuvette 4 is sealed, the solution in the moving process of the base 3 is prevented from overflowing, a locking device 6 for locking the cover plate 5 on the base 3 is arranged at one end, far away from the rotation point, of the cover plate 5, the locking device 6 comprises a T-shaped connecting rod 61 hinged on the cover plate 5, a clamping seat 62 fixed on the base 3 and matched with the connecting rod 61, a limiting groove 63 matched with the connecting rod 61 is formed in the clamping seat 62, the connecting rod 61 is rotated, when the connecting rod 61 is separated from the limiting groove 63, the cover plate 5 can rotate at the moment, and when the connecting rod 61 is clamped in the limiting groove 63.

Referring to fig. 4, a rotating shaft 64 is disposed on a surface of the card holder 62 away from the base 3, the rotating shaft 64 is disposed along a length direction of the base 3, and a limiting rod 65 is rotatably connected to the rotating shaft 64. The limiting rod 65 is rotated, the limiting rod 65 shields the opening of the limiting groove 63, and the connecting rod 61 is limited to be separated from the limiting groove 63 because the rotating directions of the connecting rod 61 and the limiting rod 65 are mutually vertical.

The action process is as follows: firstly, placing a cuvette 4 filled with a solution on a base 3, and then rotating a cover plate 5 to seal the upper end of the cuvette 4; during detection, the light source of the instrument body 1 irradiates light to the colorimetric dish 4, data are transmitted to a computer, and the content of a specific substance in a solution is analyzed by means of the computing power of the computer.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides an ultraviolet spectrophotometer of high accuracy, includes instrument body (1), set up detection room (2) on instrument body (1), place cell (4) in detection room (2), its characterized in that: it is equipped with base (3) that are used for laying cell (4) to detect indoor (2) internal slipping, the slip direction of following base (3) on the lateral wall of detecting indoor (2) is equipped with pull rod (7), the both sides that lie in base (3) on the diapire of detecting indoor (2) are equipped with fixed cover (32), the one end that is close to base (3) in fixed cover (32) is equipped with steel ball (34), be equipped with in fixed cover (32) and be used for contradicting spring (33) on base (3) with steel ball (34), the array is equipped with on base (3) with steel ball (34) complex recess (30), recess (30) are for being less than half of steel ball (34).

2. The high precision ultraviolet spectrophotometer of claim 1, wherein: the detection device is characterized in that guide plates (31) are arranged on two sides of the base (3) on the bottom wall of the detection chamber (2) and are fixedly arranged along the sliding direction of the base (3), and the fixing sleeve (32) is fixed on the guide plates (31).

3. The high precision ultraviolet spectrophotometer of claim 2, wherein: a plurality of steps with gradually reduced diameters are arranged on the pull rod (7), and the length of each step is equal to the center distance between adjacent grooves (30).

4. The high precision ultraviolet spectrophotometer of claim 3, wherein: and a guide groove (36) matched with the steel ball (34) is horizontally arranged between the adjacent grooves (30).

5. The high-precision ultraviolet spectrophotometer according to claim 1 or 4, wherein the upper end of the base (3) is rotated with an L-shaped cover plate (5) for shielding the opening of the cuvette (4), and a locking device (6) for locking the cover plate (5) is arranged at one end of the base (3) far away from the rotation point of the cover plate (5).

6. The high precision ultraviolet spectrophotometer of claim 5, wherein: the locking device (6) comprises a T-shaped connecting rod (61) hinged on the cover plate (5) and a clamping seat (62) fixed on the base (3), and a limiting groove (63) matched with the connecting rod (61) is formed in the clamping seat (62).

7. The high precision ultraviolet spectrophotometer of claim 6, wherein: the clamp seat (62) is provided with a rotating shaft (64) which is rotatably connected with one surface far away from the base (3) along the length direction of the base (3), and the rotating shaft (64) is rotatably connected with a limiting rod (65) used for preventing the connecting rod (61) from being separated from the limiting groove (63).

8. The high precision ultraviolet spectrophotometer of claim 1, wherein: and one end of the fixed sleeve (32) far away from the steel ball (34) is in threaded connection with a resisting rod (35), and two ends of the spring (33) respectively abut against the steel ball (34) and the resisting rod (35).