Atomic absorption spectrophotometer

Abstract

The utility model relates to the technical field of photometers, and discloses an atomic absorption spectrophotometer which comprises a base, a photometer body fixedly mounted at the top of the base, a control mechanism erected on one side of the base, and a clamping mechanism assembled on one side of the control mechanism, the control mechanism comprises an L-shaped rod erected on one side of the base in parallel in the transverse direction and a U-shaped block horizontally assembled on the surface of the base in the transverse direction. According to the atomic absorption spectrophotometer, the control mechanism is matched with the clamping mechanism. When the arc-shaped plate is pulled open, the spring is stretched, the sample cup is placed between the arc-shaped plate and the arc position of the semicircular plate, the arc-shaped plate is loosened, the spring resets to drive the arc-shaped plate to abut against one side of the surface of the sample cup, and meanwhile the arc-shaped plate moves in an empty groove formed in the surface of the semicircular plate and pushes the sample cup to enable the other side of the surface of the sample cup to abut against the arc position of the semicircular plate. Therefore, the sample cups with different sizes can be clamped and fixed, and the condition that the sample cups incline or topple during sampling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of photometers, in particular to an atomic absorption spectrophotometer. Background Art

[0002] Atomic absorption spectrophotometer is an instrument used to analyze the content of metal elements in substances. Atomic absorption spectroscopy is a commonly used analytical method that uses atoms to absorb the energy of specific elements under a light source of a specific wavelength to determine the content of metal elements in a sample. It is now widely used in various fields such as metallurgy, geology, mining, petroleum, light industry, agriculture, medicine, health, food and environmental monitoring.

[0003] Among them, the Chinese patent (CN218726571 U) discloses a sampling device based on an atomic absorption spectrophotometer, including a sampling mechanism and a positioning mechanism, wherein the middle of the capillary of the sampling mechanism is connected to the fixed sleeve of the atomic absorption spectrophotometer, the sample cup at the lower part of the capillary is connected to the rotating disk of the positioning mechanism, the rotating disk is evenly provided with a number of positioning grooves matching the sample cup, the limit sleeve slidably connected below the rotating disk is arranged on the outer side of the telescopic rod of the pneumatic component, the positioning hole at the bottom of the positioning groove is connected to the limit sleeve, the lower part of the rotating shaft connected to the middle of the rotating disk is sleeved with a horizontal gear, the horizontal gear is meshed with the vertical gear on the motor, and the bottom of the rotating shaft is hinged with the bearing of the fixed seat. The utility model adopts a sampling device for an atomic absorption spectrophotometer with the above structure, which is simple to operate. After manually placing the sample cup into the positioning groove, automatic and continuous sampling of the sample cup can be realized.

[0004] The shortcomings of the sampling device of the atomic absorption spectrophotometer in the above-mentioned comparative document are as follows: the size of the positioning groove is fixed, which makes it difficult to clamp and fix sample cups of different sizes, so that when the sample cup is ejected for sampling, the sample cup may be tipped or tilted, affecting the capillary tube from extracting the sample liquid in the sample cup, resulting in low practicality;

[0005] For this purpose, we designed an atomic absorption spectrophotometer. Utility Model Content

[0006] The technical problem solved by the utility model is to provide an atomic absorption spectrophotometer which is highly practical, can be simply operated and has a relatively simple structure, and solves the problem in the above-mentioned background technology that it is difficult to clamp and fix sample cups of different sizes, which may cause the sample cup to topple or tilt when the sample cup is ejected for sampling.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an atomic absorption spectrophotometer, including a base, a photometer body fixedly installed on the top of the base, a control mechanism mounted on one side of the base, and a clamping mechanism assembled on one side of the control mechanism.

[0008] The control mechanism includes an L-shaped rod erected in parallel on one side of the base in the transverse direction, a U-shaped block horizontally mounted on the surface of the base in the transverse direction, and a round rod penetrating the circular ring and both sides of the top of the U-shaped block. The surface of the round rod is fixedly connected to the limited block and is located on the two inner sides of the top of the U-shaped block. The surface of the circular ring is movably connected to one side of the bottom of the U-shaped block through two symmetrically distributed connecting blocks.

[0009] The clamping mechanism includes four semicircular plates assembled in an array along the horizontal direction on one side of the U-shaped block and two springs symmetrically distributed on the inner wall of the semicircular plate. The other ends of the two springs are fixedly connected to an arc plate, and the arc plate is slidably connected to a slide groove on one side of the semicircular plate. A buffer rod is sleeved inside the spring.

[0010] Optionally, a plurality of fixing rings are fixedly connected to the top and front side of the L-shaped rod, a capillary is sleeved inside the fixing ring, one end of the capillary is through-connected to the input end of the photometer body, and the other end of the capillary extends to the bottom of the L-shaped rod.

[0011] Optionally, one end of the round rod is fixedly connected to a pull rod, and a non-slip pad is fixedly connected to the surface of the pull rod.

[0012] Optionally, a pull block is fixedly connected to the surface of the arc-shaped plate, and the surface of the pull block is provided with rounded corners.

[0013] Optionally, a hollow groove matched with the arc-shaped plate is opened on one side of the semicircular plate, and a stopper is fixedly connected to one side of the semicircular plate.

[0014] Optionally, a slide groove matched with the U-shaped block is provided on the surface of the base, and the bottom of the U-shaped block is slidably connected to the slide groove.

[0015] The utility model provides an atomic absorption spectrophotometer, which has the following beneficial effects:

[0016] The atomic absorption spectrophotometer cooperates with the control mechanism and the clamping mechanism. The arc plate spring is stretched, and then the sample cup is placed between the arc plate and the arc of the semicircular plate, and the arc plate is released. At this time, the spring resets and drives the arc plate to press against one side of the surface of the sample cup. At the same time, the arc plate moves in the empty groove opened on the surface of the semicircular plate, and pushes the sample cup so that the other side of its surface presses against the arc of the semicircular plate. Sample cups of different sizes can be clamped and fixed, thereby avoiding the sample cup from tilting or falling during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the control mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the clamping mechanism of the utility model.

[0021] In the figure: 1. base; 2. photometer body; 3. control mechanism; 301. L-shaped rod; 302. U-shaped block; 303. circular ring; 304. circular rod; 305. limit block; 306. connecting block; 4. clamping mechanism; 401. semicircular plate; 402. spring; 403. arc plate; 5. fixing ring; 6. capillary; 7. pull rod; 8. stop block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4The utility model provides a technical solution: an atomic absorption spectrophotometer, comprising a base 1, a photometer body 2 fixedly mounted on the top of the base 1, a control mechanism 3 mounted on one side of the base 1, and a clamping mechanism 4 assembled on one side of the control mechanism 3, the control mechanism 3 comprising an L-shaped rod 301 mounted on one side of the base 1 in parallel along the transverse direction, a U-shaped block 302 assembled on the surface of the base 1 in the transverse direction, and a round rod 304 penetrating through a circular ring 303 and both sides of the top of the U-shaped block 302, a limited block 305 fixedly connected to the surface of the round rod 304 and located at the U-shaped block 30 On the two inner sides of the top, the surface of the ring 303 is movably connected to the bottom side of the U-shaped block 302 through two symmetrically distributed connecting blocks 306. The clamping mechanism 4 includes four semicircular plates 401 arranged in a horizontal array on one side of the U-shaped block 302 and two springs 402 symmetrically distributed on the inner wall of the semicircular plate 401. The other ends of the two springs 402 are fixedly connected to the arc plate 403, which is slidably connected to the slide groove on one side of the semicircular plate 401. The inside of the spring 402 is sleeved with a buffer rod. Through the cooperation of the control mechanism 3 and the clamping mechanism 4. The curved plate 403 is pulled open and the spring 402 is stretched. Then the sample cup is placed between the curved plate 403 and the arc of the semicircular plate 401. The curved plate 403 is released. At this time, the spring 402 is reset to drive the curved plate 403 to press against one side of the surface of the sample cup. At the same time, the curved plate 403 moves in the empty groove provided on the surface of the semicircular plate 401 and pushes the sample cup so that the other side of its surface presses against the arc of the semicircular plate 401. In this way, sample cups of different sizes can be clamped and fixed, thereby preventing the sample cup from tilting or falling during sampling.

[0024] A plurality of fixing rings 5 ​​are fixedly connected to the top and the front side of the L-shaped rod 301, and a capillary 6 is sleeved inside the fixing ring 5. One end of the capillary 6 is connected to the input end of the photometer body 2, and the other end of the capillary 6 extends to the bottom of the L-shaped rod 301. The capillary 6 extends to the bottom of the L-shaped rod 301 to facilitate the absorption of the sample liquid in the sample cup.

[0025] One end of the round rod 304 is fixedly connected to a pull rod 7, and a non-slip pad is fixedly connected to the surface of the pull rod 7, wherein the pull rod 7 facilitates the control of the round rod 304 to move;

[0026] A pulling block is fixedly connected to the surface of the arc plate 403, and the surface of the pulling block is provided with rounded corners, wherein the pulling block facilitates pulling the arc plate 403;

[0027] A slot matching the arc-shaped plate 403 is provided on one side of the semicircular plate 401, and a stopper 8 is fixedly connected to one side of the semicircular plate 401, wherein the stopper 8 can block the arc-shaped plate 403 and prevent it from escaping from the slot of the semicircular plate 401;

[0028] The surface of the base 1 is provided with a slide groove matched with the U-shaped block 302 , and the bottom of the U-shaped block 302 is slidably connected to the slide groove, wherein the slide groove facilitates the sliding of the U-shaped block 302 .

[0029] In the utility model, the working steps of the device are as follows:

[0030] Step 1: Pull open the curved plate 403 so that the spring 402 is stretched, and then place the sample cup between the curved plate 403 and the arc of the semicircular plate 401, and release the curved plate 403. At this time, the spring 402 is reset to drive the curved plate 403 to press against one side of the surface of the sample cup. At the same time, the curved plate 403 moves in the empty groove opened on the surface of the semicircular plate 401, and pushes the sample cup so that the other side of its surface presses against the arc of the semicircular plate 401.

[0031] The second step: hold the pull rod 7 again and pull it counterclockwise with the round rod 304 as the axis. While pulling, the ring 303 on the surface of the round rod 304 is blocked by the limit block 305 to make it rotate. At the same time, the round rod 304 rotates on both sides of the top of the U-shaped block 302, and then drives the end rotatably connected to the L-shaped rod 301 to move downward through the connecting block 306, and the surface of the L-shaped rod 301 rotates on both sides of the inner wall of the rectangular groove of the base 1, so that the other end of the L-shaped rod 301 moves upward and drives the capillary 6 to move upward. At this time, push the round rod 304 according to the sample cup for sampling as needed, so that the limit blocks 305 on its surface block the two sides of the top of the U-shaped block 302, and then drive the U-shaped block 302 to move left and right. After adjusting to the appropriate sample, lift the pull rod 7 upward and make the end of the L-shaped rod 301 with the capillary 6 move toward the sample cup.

[0032] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0033] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atomic absorption spectrophotometer, characterized in that: The invention comprises a base (1), a photometer body (2) fixedly mounted on the top of the base (1), a control mechanism (3) mounted on one side of the base (1), and a clamping mechanism (4) mounted on one side of the control mechanism (3). The control mechanism (3) comprises an L-shaped rod (301) erected in parallel on one side of the base (1) in the transverse direction, a U-shaped block (302) mounted horizontally on the surface of the base (1) in the transverse direction, and a round rod (304) penetrating the circular ring (303) and the two sides of the top of the U-shaped block (302); the surface of the round rod (304) is fixedly connected to a limit block (305) and is located on the two inner sides of the top of the U-shaped block (302); the surface of the circular ring (303) is movably connected to one side of the bottom of the U-shaped block (302) through two symmetrically distributed connecting blocks (306); The clamping mechanism (4) comprises four semicircular plates (401) arranged in a horizontal array on one side of the U-shaped block (302) and two springs (402) symmetrically distributed on the inner wall of the semicircular plate (401), the other ends of the two springs (402) being fixedly connected to an arc-shaped plate (403), the arc-shaped plate (403) being slidably connected to a slide groove on one side of the semicircular plate (401), and a buffer rod being sleeved inside the spring (402).

2. An atomic absorption spectrophotometer according to claim 1, characterized in that: A plurality of fixing rings (5) are fixedly connected to the top and the front side of the L-shaped rod (301), a capillary (6) is sleeved inside the fixing ring (5), one end of the capillary (6) is connected to the input end of the photometer body, and the other end of the capillary (6) extends to the bottom of the L-shaped rod (301).

3. An atomic absorption spectrophotometer according to claim 1, characterized in that: One end of the round rod (304) is fixedly connected to a pull rod (7), and the surface of the pull rod (7) is fixedly connected to an anti-slip pad.

4. An atomic absorption spectrophotometer according to claim 1, characterized in that: A pull block is fixedly connected to the surface of the arc-shaped plate (403), and the surface of the pull block is provided with rounded corners.

5. The atomic absorption spectrophotometer according to claim 1, characterized in that: One side of the semicircular plate (401) is provided with a hollow groove matched with the arc-shaped plate (403), and one side of the semicircular plate (401) is fixedly connected with a stopper (8).

6. An atomic absorption spectrophotometer according to claim 1, characterized in that: A sliding groove matched with the U-shaped block (302) is disposed on the surface of the base (1), and the bottom of the U-shaped block (302) is slidably connected to the sliding groove.

Images