Atomic absorption cover

Abstract

The utility model relates to an atom absorption cover which comprises a conveying mechanism, a cleaning mechanism is arranged in the conveying mechanism, the cleaning mechanism comprises a connecting thread sleeve, the connecting thread sleeve is arranged in the conveying mechanism, a filter box is fixedly installed in the connecting thread sleeve, a through hole is formed in the outer side face of the filter box, and the through hole is communicated with the conveying mechanism. And an intercepting screen plate in contact with the connecting thread sleeve is placed at the top of the filter box. According to the atomic absorption cover, through the arrangement of the cleaning mechanism and the conveying mechanism, moisture in gas is adsorbed while the whole atomic absorption cover extracts hot gas, generation of condensate water is prevented from interfering a test as much as possible, the test safety is guaranteed, meanwhile, dust is intercepted as much as possible and prevented from being attached into the whole atomic absorption cover, and maintenance is convenient and fast; and through the arrangement of the conveying mechanism, the extraction position of the conveying mechanism can be adjusted at will, so that the overall use flexibility of the atomic absorption cover is better, and the test safety is further ensured.

Description

Technical Field

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

[0002] The atomic absorption hood is a device used in atomic absorption spectrometry experiments. It can filter out interfering elements, reduce background interference, and improve the accuracy and reliability of analytical data. At the same time, it can quickly discharge small-scale suspended matter or gases such as dust, heat, volatile gases and harmful gases generated in the experiment or production process to protect the health of operators and surrounding personnel.

[0003] In the process of realizing this application, the inventors found that there are at least the following problems in this technology: the existing atomic absorption hood is prone to produce condensed water during the heat extraction process. At the same time, the extracted gas will carry dust, which is easy to cause the dust to adhere to the internal filtering equipment of the atomic absorption hood, affecting the normal use of its filtering equipment, thereby making the atomic absorption hood inefficient in gas treatment and requiring frequent maintenance, affecting laboratory use and increasing experimental costs. Therefore, further improvement is needed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an atomic absorption hood with the advantages of convenient cleaning and maintenance, thereby solving the problem of poor convenience in cleaning and maintenance of the existing atomic absorption hood.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an atomic absorption cover, comprising a conveying mechanism, wherein a cleaning mechanism is provided inside the conveying mechanism;

[0006] The cleaning mechanism includes a connecting screw sleeve, which is arranged inside the conveying mechanism. A filter box is fixedly installed inside the connecting screw sleeve, and a through hole is opened on the outer side of the filter box. An intercepting mesh plate in contact with the connecting screw sleeve is placed on the top of the filter box. The front side of the intercepting mesh plate and the front side of the inner wall of the filter box are fixedly installed with a positioning ring. A rotating shaft is inserted into the interior of the positioning ring as a whole, and a stirring blade is fixedly installed on the outside of the rotating shaft. The interior of the filter box is filled with desiccant particles.

[0007] Furthermore, the conveying mechanism includes a fixed pipe and a U-shaped extension pipe, the bottom of the fixed pipe is fixed and connected with an L-shaped transport pipe, the number of the U-shaped extension pipes is two, the outlet of the U-shaped extension pipe on the left is fixed and connected with the inlet of the U-shaped extension pipe on the right through a rotary joint, the inlet of the U-shaped extension pipe on the left is fixed and connected with the outlet of the L-shaped transport pipe through a rotary joint, the outlet of the U-shaped extension pipe on the right is fixed and connected with an L-shaped extraction pipe through a rotary joint, the outside of the L-shaped extraction pipe is fixed and connected with an adsorption hood, the front and rear ends of the left side of the U-shaped extension pipe on the left and the left rear end of the L-shaped extraction pipe are rotatably installed with adjustment rods, the two front adjustment rods pass through and extend to the right side of the U-shaped extension pipe, the rear adjustment rod passes through and extends to the right side of the L-shaped transport pipe, and the left and right ends of the adjustment rods are rotatably installed with fastening screw sleeves.

[0008] Furthermore, the two fastening screw sleeves at the front end on the right side are in contact with the U-shaped extension pipe on the right side, the fastening screw sleeves at the rear end on the right side are in contact with the L-shaped transport pipe, the two fastening screw sleeves at the rear end on the left side are in contact with the U-shaped extension pipe on the left side, and the fastening screw sleeves at the rear end on the left side are in contact with the L-shaped extraction pipe.

[0009] Furthermore, the connecting screw sleeve is threadedly installed on the outside of the L-shaped extraction pipe, and the cleaning mechanism is located inside the adsorption cover.

[0010] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0011] 1. The atomic absorption hood, through the setting of the cleaning mechanism and the conveying mechanism, can absorb the moisture in the gas while extracting the hot gas, so as to avoid the generation of condensed water to interfere with the test and ensure the safety of the test. At the same time, it can intercept the dust as much as possible to prevent it from adhering to the interior of the atomic absorption hood, making maintenance convenient.

[0012] 2. The atomic absorption cover has a conveying mechanism so that its extraction position can be adjusted arbitrarily, thereby making the overall use flexibility of the atomic absorption cover better and further ensuring the safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cleaning mechanism structure of the utility model;

[0015] Figure 3 A schematic diagram of the internal structure of the cleaning mechanism of the utility model;

[0016] Figure 4 For this utility model Figure 1Enlarged view of point A in the middle.

[0017] In the figure: 1. Fixed pipe; 2. L-shaped transport pipe; 3. U-shaped extension pipe; 4. Adjusting rod; 5. Fastening screw sleeve; 6. L-shaped extraction pipe; 7. Adsorption cover; 8. Connecting screw sleeve; 9. Through hole; 10. Filter box; 11. Intercepting mesh plate; 12. Positioning ring; 13. Rotating shaft; 14. Stirring blade. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying 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.

[0019] See also Figure 1-4 In this embodiment, an atomic absorption cover includes a conveying mechanism, and a cleaning mechanism is provided inside the conveying mechanism.

[0020] In this embodiment, the cleaning mechanism includes a connecting screw sleeve 8, which is arranged inside the conveying mechanism. A filter box 10 is fixedly installed inside the connecting screw sleeve 8. A through hole 9 is opened on the outer side of the filter box 10. An intercepting mesh plate 11 in contact with the connecting screw sleeve 8 is placed on the top of the filter box 10. The front of the intercepting mesh plate 11 and the front side of the inner wall of the filter box 10 are fixedly installed with a positioning ring 12. A rotating shaft 13 is inserted into the interior of the positioning ring 12 as a whole. A stirring blade 14 is fixedly installed on the outside of the rotating shaft 13. The interior of the filter box 10 is filled with desiccant particles.

[0021] The filter box 10 is rotated and the connecting screw sleeve 8 is driven to rotate, so that the filter box 10 can be quickly removed. At this time, the intercepting screen 11 loses the squeezing of the conveying mechanism and is no longer fixed, thereby realizing the rapid removal of the intercepting screen 11. Then, the rotating shaft 13 drives the stirring blade 14 to be quickly taken out through the positioning ring 12, so that the desiccant particles can be replaced, making maintenance convenient.

[0022] Specifically, when the conveying mechanism extracts laboratory gas, the airflow drives the stirring blades 14 to operate in the filter box 10, causing the rotating shaft 13 to rotate in the positioning ring 12, thereby driving the desiccant particles filled in the filter box 10 to move and fully contact with the extracted gas, thereby adsorbing moisture in the air and intercepting some dust. The extracted gas then contacts the interception mesh plate 11, intercepting the dust again, further reducing the dust in the gas, thereby preventing dust and moisture from entering and adhering to the inside of the atomic absorption hood, making maintenance convenient.

[0023] In this embodiment, the conveying mechanism includes a fixed pipe 1 and a U-shaped extension pipe 3. The bottom of the fixed pipe 1 is fixed and connected to the L-shaped transport pipe 2. There are two U-shaped extension pipes 3. The outlet of the left U-shaped extension pipe 3 is fixed and connected to the inlet of the right U-shaped extension pipe 3 through a rotary joint. The inlet of the left U-shaped extension pipe 3 is fixed and connected to the outlet of the L-shaped transport pipe 2 through a rotary joint. The outlet of the right U-shaped extension pipe 3 is fixed and connected to the L-shaped extraction pipe 6 through a rotary joint. The outside of the L-shaped extraction pipe 6 is fixed and connected to the adsorption cover 7. The front and rear ends of the left side of the U-shaped extension pipe 3 and the L-shaped extraction pipe 6 are fixed. The left and rear ends of the adjusting rods 4 are rotatably installed, the two front adjusting rods 4 pass through and extend to the right side of the U-shaped extension pipe 3, the rear adjusting rod 4 passes through and extends to the right side of the L-shaped transport pipe 2, and the left and right ends of the outside of the adjusting rod 4 are rotatably installed with fastening screw sleeves 5. The two fastening screw sleeves 5 at the front end of the right side are in contact with the U-shaped extension pipe 3 on the right side, the fastening screw sleeve 5 at the rear end of the right side is in contact with the L-shaped transport pipe 2, the two fastening screw sleeves 5 at the rear end of the left side are in contact with the U-shaped extension pipe 3 on the left side, and the fastening screw sleeve 5 at the rear end of the left side is in contact with the L-shaped extraction pipe 6. The connecting screw sleeve 8 is threadedly installed on the outside of the L-shaped extraction pipe 6, and the cleaning mechanism is located inside the adsorption cover 7.

[0024] in,

[0025] It should be noted that the fastening screw sleeve 5 is provided with resistance-increasing grooves on one side close to the L-shaped extraction pipe 6, the U-shaped extension pipe 3 and the L-shaped transport pipe 2. When the fastening screw sleeve 5 comes into contact with the three, the adjusting rod 4 is fixed, so that the L-shaped extraction pipe 6 and the U-shaped extension pipe 3 can be effectively fixed and adjusted.

[0026] Specifically, when the conveying mechanism is in use, the fastening screw sleeve 5 is rotated to move it away from the L-shaped extraction pipe 6, the U-shaped extension pipe 3 and the L-shaped transport pipe 2, so that the three are no longer fastened, and the angles of the three can be adjusted through the rotary joint, so that the adsorption cover 7 can flexibly extract the gas in the laboratory.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[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 atomic absorption cover, characterized in that: It comprises a conveying mechanism, wherein a cleaning mechanism is provided inside the conveying mechanism; The cleaning mechanism comprises a connecting screw sleeve (8), the connecting screw sleeve (8) is arranged inside the conveying mechanism, a filter box (10) is fixedly installed inside the connecting screw sleeve (8), a through hole (9) is opened on the outer side of the filter box (10), an intercepting screen (11) in contact with the connecting screw sleeve (8) is placed on the top of the filter box (10), a positioning ring (12) is fixedly installed on the front side of the intercepting screen plate (11) and the front side of the inner wall of the filter box (10), a rotating shaft (13) is inserted into the interior of the positioning ring (12), and a stirring blade (14) is fixedly installed on the outside of the rotating shaft (13), and the interior of the filter box (10) is filled with desiccant particles.

2. The atomic absorption cover according to claim 1, characterized in that: The conveying mechanism comprises a fixed pipe (1) and a U-shaped extension pipe (3), the bottom of the fixed pipe (1) is fixed and connected to the L-shaped transport pipe (2), the number of the U-shaped extension pipes (3) is two, the outlet of the left U-shaped extension pipe (3) is fixed and connected to the inlet of the right U-shaped extension pipe (3) through a rotary joint, the inlet of the left U-shaped extension pipe (3) is fixed and connected to the outlet of the L-shaped transport pipe (2) through a rotary joint, and the outlet of the right U-shaped extension pipe (3) is fixed and connected to the inlet of the L-shaped transport pipe (2) through a rotary joint. An L-shaped extraction pipe (6) is fixed and connected, and the outside of the L-shaped extraction pipe (6) is fixed and connected with an adsorption cover (7), and the front and rear ends of the left side of the U-shaped extension pipe (3) and the rear end of the left side of the L-shaped extraction pipe (6) are rotatably installed with adjustment rods (4), the two front adjustment rods (4) penetrate and extend to the right side of the U-shaped extension pipe (3), and the rear adjustment rod (4) penetrates and extends to the right side of the L-shaped transport pipe (2), and the left and right ends of the outside of the adjustment rod (4) are rotatably installed with fastening screw sleeves (5).

3. The atomic absorption cover according to claim 2, characterized in that: The two fastening screw sleeves (5) at the front end on the right side are in contact with the right U-shaped extension pipe (3), the fastening screw sleeve (5) at the rear end on the right side is in contact with the L-shaped transport pipe (2), the two fastening screw sleeves (5) at the rear end on the left side are in contact with the left U-shaped extension pipe (3), and the fastening screw sleeve (5) at the rear end on the left side is in contact with the L-shaped extraction pipe (6).

4. The atomic absorption cover according to claim 2, characterized in that: The connecting screw sleeve (8) is threadedly mounted on the outside of the L-shaped extraction pipe (6), and the cleaning mechanism is located inside the adsorption cover (7).

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