Online atomic absorption spectrometer for heavy metals in water

Abstract

The utility model relates to the technical field of atomic absorption spectrometers, and discloses an on-line atomic absorption spectrometer for heavy metals in water, which comprises a turntable, a connecting base is mounted at the top of the turntable, a hollow cathode lamp is inserted into the inner wall of the connecting base, an outer sliding chute is formed in the outer wall of the connecting base, and the hollow cathode lamp is connected with the outer sliding chute. An inner sliding groove is formed in the outer wall of the bottom of the hollow cathode lamp, and fixing plates are slidably connected to the inner walls of the outer sliding groove and the inner sliding groove. A fixing plate is pulled outwards, then a protruding block corresponds to a vertical groove, then the hollow cathode lamp is inserted into a connecting base, force is released from the fixing plate, and at the moment, a first sliding rod is supported through a supporting spring, so that the fixing plate is reset; therefore, the problems that when an existing hollow cathode lamp is installed, the hollow cathode lamp is installed on a base through a threaded ring, the threaded ring needs to be arranged on the hollow cathode lamp in a sleeving mode during installation, then the hollow cathode lamp is inserted into the base, the installation process is complex, and rapid replacement and maintenance are not convenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of atomic absorption spectrometers, in particular to an online atomic absorption spectrometer for heavy metals in water. Background Art

[0002] Atomic absorption spectrometers can measure a variety of elements. Flame atomic absorption spectrometry can measure up to the order of 10-9 g / mL, and graphite furnace atomic absorption spectrometry can measure up to the order of 10-13 g / mL. In order to solve the actual measurement problems of atomic absorption method, the hollow cathode lamp is a special form of low-pressure glow discharge sharp line light source. Because the hollow cathode lamp emits a sharp line light source, it meets the conditions of atomic absorption spectrometry.

[0003] The existing hollow cathode lamp is installed on the base through a threaded ring. During installation, the threaded ring needs to be put on the hollow cathode lamp and then the hollow cathode lamp is plugged into the base. The installation process is relatively complicated and not convenient for quick replacement and maintenance. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides an online atomic absorption spectrometer for heavy metals in water, which has the advantages of easy disassembly and installation and stability, and solves the problems raised by the above background technology.

[0005] The utility model provides the following technical solution: an online atomic absorption spectrometer for heavy metals in water, comprising a turntable, a connecting base being installed on the top of the turntable, a hollow cathode lamp being plugged into the inner wall of the connecting base, an outer slide groove being provided on the outer wall of the connecting base, an inner slide groove being provided on the outer wall of the bottom of the hollow cathode lamp, a fixing plate being slidably connected to the inner walls of the outer slide groove and the inner slide groove, an arc groove being provided at the tail end of the top of the fixing plate, and grooves being provided on the outer walls of both ends of the fixing plate.

[0006] As a preferred technical solution of the present invention, a vertical groove is provided on the inner wall of the connecting base, and a protrusion is fixedly mounted on the outer wall of the bottom of the hollow cathode lamp.

[0007] As an optimal technical solution of the present invention, a slide rod 1 is installed at the bottom of the tail end of the fixed plate, the outer edge of the bottom of the slide rod 1 is slidably connected to a slide rail, and a slide rod 2 is fixedly assembled at the bottom of the fixed plate.

[0008] As a preferred technical solution of the present invention, a limit block is provided on the left side of the second slide bar, and the distance between the second slide bar and the limit block is the same as the distance between the center of the arc groove and the center of the hollow cathode lamp.

[0009] As an optimal technical solution of the present invention, a circular hole is opened on the outer edge of the sliding rod one, and a long rod is slidably connected to the inner wall of the circular hole. The end of the long rod away from the sliding rod one is fixedly equipped with a mounting plate, and the mounting plate is installed on the slide rail. The outer edge of the long rod is movably sleeved with a support spring.

[0010] As an optimal technical solution of the present invention, the outer wall of the connecting base is fixedly equipped with a mounting bracket, the bottom of the mounting bracket is fixedly equipped with a cylinder, the inner cavity of the cylinder is provided with a steel ball, and the outer edge of the steel ball is provided with a top ball spring.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The online atomic absorption spectrometer for heavy metals in water is constructed by pulling the fixing plate outward, aligning the protrusion with the vertical groove, inserting the hollow cathode lamp into the connecting base, and then unloading the fixing plate. At this time, the sliding rod is supported by the support spring to reset the fixing plate, thereby solving the problem that the existing hollow cathode lamp is installed on the base through a threaded ring. During installation, the threaded ring needs to be put on the hollow cathode lamp, and then the hollow cathode lamp is plugged into the base. The installation process is relatively complicated and is not convenient for quick replacement and maintenance.

[0013] 2. The online atomic absorption spectrometer for heavy metals in water supports the steel ball through the top ball spring. The steel ball is located in the groove. When the fixed plate is moved, a large force is required to move the fixed plate. When the turntable rotates, the centrifugal force will not move the fixed plate, making this structure more stable for fixing the hollow cathode lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the connection base position structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the hollow cathode lamp and the connection base of the utility model;

[0016] Figure 3 This is a schematic diagram of the expanded structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the fixed plate structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the utility model.

[0019] In the figure: 1. Turntable; 2. Connecting base; 3. Hollow cathode lamp; 4. Vertical slot; 5. Bump; 6. Outer slide slot; 7. Inner slide slot; 8. Fixed plate; 9. Arc slot; 10. Slide bar 1; 11. Round hole; 12. Slide rail; 13. Long rod; 14. Mounting plate; 15. Support spring; 16. Slide bar 2; 17. Limit block; 18. Groove; 19. Mounting bracket; 20. Cylinder; 21. Steel ball; 22. Top ball spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 - Figure 5 When the hopper 1 is in the working state, the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state, and the hopper 1 is in the working state,

[0022] In a preferred embodiment, a vertical groove 4 is provided on the inner wall of the connecting base 2, and a protrusion 5 is fixedly assembled on the outer wall of the bottom of the hollow cathode lamp 3. The vertical groove 4 and the protrusion 5 are used in conjunction with each other so that the protrusion 5 is located in the vertical groove 4. At this time, the hollow cathode lamp 3 is completely inserted into the connecting base 2, and the vertical groove 4 and the protrusion 5 are used in conjunction with each other to play a positioning role.

[0023] In a preferred embodiment, a slide bar 10 is installed at the bottom of the tail end of the fixed plate 8, and the outer edge of the bottom of the slide bar 10 is slidably connected to the slide rail 12, and the bottom of the fixed plate 8 is fixedly assembled with a slide bar 2 16. By utilizing the setting of the slide bar 10 and the slide bar 2 16, the slide bar 10 and the slide bar 2 16 play a role in supporting the fixed plate 8, so that the fixed plate 8 is more stably located in the outer slide groove 6 and the inner slide groove 7, thereby improving the stability of the device.

[0024] In a preferred embodiment, a limit block 17 is provided on the left side of the slide rod 16. The distance between the slide rod 16 and the limit block 17 is the same as the distance between the center of the arc groove 9 and the center of the hollow cathode lamp 3. The limit block 17 limits the slide rod 16. When the slide rod 16 contacts the limit block 17, the arc groove 9 corresponds to the hollow cathode lamp 3. At this time, the hollow cathode lamp 3 can be removed from the connecting base 2 through the arc groove 9.

[0025] In a preferred embodiment, a circular hole 11 is provided on the outer edge of the slide rod 10, and a long rod 13 is slidably connected to the inner wall of the circular hole 11. A mounting plate 14 is fixedly installed on the end of the long rod 13 away from the slide rod 10, and the mounting plate 14 is installed on the slide rail 12. A support spring 15 is movably sleeved on the outer edge of the long rod 13. When the fixed plate 8 moves, it will drive the slide rod 10 to move. At this time, the long rod 13 slides in the slide rod 10, so that the support spring 15 is compressed. In a static state, the support spring 15 supports the slide rod 10, so that the arc groove 9 is misaligned with the hollow cathode lamp 3, so that the hollow cathode lamp 3 cannot be detached, thereby improving the stability of the device.

[0026] In a preferred embodiment, the outer wall of the connecting base 2 is fixedly equipped with a mounting bracket 19, and the bottom of the mounting bracket 19 is fixedly equipped with a cylinder 20. The inner cavity of the cylinder 20 is provided with a steel ball 21, and the outer edge of the steel ball 21 is provided with a top ball spring 22. The steel ball 21 is supported by the top ball spring 22 so that the steel ball 21 is located in the groove 18, so that the fixed plate 8 needs to use a larger force to move the fixed plate 8 when moving. The centrifugal force when the turntable 1 rotates will not cause the fixed plate 8 to move, thereby improving the stability of the device.

[0027] Working principle: when in use, pull the fixing plate 8 outward, then make the protrusion 5 correspond to the vertical groove 4, then insert the hollow cathode lamp 3 into the connecting base 2, and then unload the force on the fixing plate 8. At this time, the slide bar 10 is supported by the support spring 15 to reset the fixing plate 8. At the same time, the steel ball 21 is located in the groove 18. When the hollow cathode lamp 3 needs to be disassembled, pull the fixing plate 8 outward. At this time, the slide bar 10 moves on the slide rail 12. When the slide bar 2 16 contacts the limit block 17, the arc groove 9 on the fixing plate 8 corresponds to the hollow cathode lamp 3. Then pull the hollow cathode lamp 3 upward, and the hollow cathode lamp 3 is detached from the connecting base 2. At this time, the hollow cathode lamp 3 is removed.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online atomic absorption spectrometer for heavy metals in water, comprising a turntable (1), characterized in that: A connecting base (2) is installed on the top of the turntable (1), a hollow cathode lamp (3) is plugged into the inner wall of the connecting base (2), an outer sliding groove (6) is provided on the outer wall of the connecting base (2), an inner sliding groove (7) is provided on the outer wall of the bottom of the hollow cathode lamp (3), the inner walls of the outer sliding groove (6) and the inner walls of the inner sliding groove (7) are both slidably connected to a fixed plate (8), an arc groove (9) is provided at the tail end of the top of the fixed plate (8), and grooves (18) are provided on the outer walls of both ends of the fixed plate (8).

2. The on-line atomic absorption spectrometer for heavy metals in water according to claim 1, wherein: A vertical groove (4) is provided on the inner wall of the connecting base (2), and a protrusion (5) is fixedly mounted on the outer wall of the bottom of the hollow cathode lamp (3).

3. The on-line atomic absorption spectrometer for heavy metals in water according to claim 1, wherein: A slide bar 1 (10) is installed at the bottom of the tail end of the fixed plate (8), and the outer edge of the bottom of the slide bar 1 (10) is slidably connected to a slide rail (12). The bottom of the fixed plate (8) is fixedly equipped with a slide bar 2 (16).

4. The on-line atomic absorption spectrometer for heavy metals in water according to claim 3, wherein: A limit block (17) is provided on the left side of the second slide bar (16), and the distance between the second slide bar (16) and the limit block (17) is the same as the distance between the center of the arc groove (9) and the center of the hollow cathode lamp (3).

5. The on-line atomic absorption spectrometer for heavy metals in water according to claim 4, characterized in that: A circular hole (11) is provided on the outer edge of the slide rod (10), and a long rod (13) is slidably connected to the inner wall of the circular hole (11). An end of the long rod (13) away from the slide rod (10) is fixedly equipped with a mounting plate (14), and the mounting plate (14) is mounted on the slide rail (12). A support spring (15) is movably sleeved on the outer edge of the long rod (13).

6. The on-line atomic absorption spectrometer for heavy metals in water according to claim 1, characterized in that: The outer wall of the connecting base (2) is fixedly equipped with a mounting bracket (19), the bottom of the mounting bracket (19) is fixedly equipped with a cylinder (20), the inner cavity of the cylinder (20) is provided with a steel ball (21), and the outer edge of the steel ball (21) is provided with a top ball spring (22).

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