Ventilation device for atomic absorption

Abstract

The utility model provides a ventilation device for atomic absorption. The ventilation device comprises a ventilation assembly and a filtering assembly, the ventilation assembly comprises a negative pressure cover used for collecting smoke, and a ventilation pipe is installed at the top of the negative pressure cover. The two mounting frames are mounted in the negative pressure cover, the fine filter screen is mounted in one mounting frame, the activated carbon filter screen is mounted in the other mounting frame, the activated carbon filter screen is mounted at the top of the fine filter screen, and sucked air is filtered when passing through the fine filter screen, so that the content of impurity particles in the air is reduced, and the air quality is improved. The filtered air passes through the activated carbon filter screen, so that harmful substances in the air can be conveniently adsorbed and filtered, and the discharged air is harmless to the environment.

Description

Technical Field

[0001] The utility model relates to the field of ventilation devices, in particular to a ventilation device for atomic absorption. Background Art

[0002] Atomic absorption is a phenomenon whereby, when irradiated onto a material that has been atomized by heating to a high temperature, or within a sample utilizing this phenomenon, the atomic absorption spectrum displays narrow absorption spectra of the constituent elements. It is a method for qualitative and quantitative elemental analysis. The atomic absorption process produces a large amount of toxic substances, necessitating rapid ventilation. Existing ventilation systems for atomic absorption typically utilize suction hoods to directly extract and exhaust the airflow. Since the extracted air cannot be filtered, the exhaust contains harmful substances, causing environmental pollution. Furthermore, some negative pressure hoods are equipped with internal fans, resulting in high noise levels. Utility Model Content

[0003] The purpose of the present utility model is to provide a ventilation device for atomic absorption, so as to solve the problems raised in the above-mentioned background technology that the exhaust gas contains harmful substances and pollutes the environment due to the inability to filter the sucked gas, and some negative pressure hoods are equipped with fans inside, which makes the on-site noise relatively large.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A ventilation device for atomic absorption, comprising: a ventilation component and a filter component;

[0006] Wherein: the ventilation assembly includes a negative pressure hood for collecting smoke, a ventilation pipe is installed on the top of the negative pressure hood, a mounting hood is installed at one end of the ventilation pipe, an exhaust pipe is installed on one side of the mounting hood, an impeller is rotatably installed inside the mounting hood, a support frame is installed on one side of the mounting hood, a drive motor is installed on the surface of the support frame, and the output end of the drive motor is transmission-connected to the impeller;

[0007] The filter assembly includes two mounting frames arranged inside the negative pressure cover, wherein a fine filter is installed inside one of the mounting frames, and an activated carbon filter is installed inside the other mounting frame, and the activated carbon filter is arranged on top of the fine filter.

[0008] As a preferred solution of the present invention: a driving flywheel is fixedly mounted on the output end of the driving motor, a driven flywheel is fixedly mounted on the back of the impeller, and the driving flywheel and the driven flywheel are connected via a transmission belt.

[0009] As a preferred solution of the present invention: a mounting groove is provided on one side of the negative pressure cover, slide bars are installed on both sides of the mounting frame, the slide bars slide inside the mounting groove, and a handle is fixedly installed on one end of the mounting frame.

[0010] As a preferred solution of the present invention: a support is fixedly installed on the surface of the ventilation pipe, an adjusting wrench is rotatably installed on the surface of the support, a valve plate is rotatably installed inside the ventilation pipe, and one end of the adjusting wrench is fixedly connected to the valve plate.

[0011] As a preferred solution of the present invention: a limiting rod is installed on the top of the surface of the support.

[0012] As a preferred solution of the present invention: the ventilation pipe is a telescopic and bendable aluminum foil tube.

[0013] As a preferred solution of the present invention: a negative pressure gauge is installed inside the ventilation pipe below the valve plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) A driving motor is installed on the surface of the support frame. The driving motor rotates to drive the active flywheel to rotate. The active flywheel rotates to drive the driven flywheel to rotate via a transmission belt. The driven flywheel drives the impeller inside the mounting cover to rotate. The rotation of the impeller forms a negative pressure inside the mounting cover. A negative pressure environment is formed at the negative pressure cover connected to the mounting cover through a ventilation pipe, which facilitates ventilation of the atomic absorption device. The driving motor and the impeller are installed at one end away from the negative pressure cover, so as to reduce noise at the negative pressure cover end.

[0016] (2) Two mounting frames are installed inside the negative pressure hood, one of which is equipped with a fine filter, and the other is equipped with an activated carbon filter. The activated carbon filter is installed on top of the fine filter. The sucked air is filtered when passing through the fine filter, thereby reducing the content of impurity particles in the air. The filtered air passes through the activated carbon filter, which facilitates the adsorption and filtration of harmful substances in the gas, making the discharged gas harmless to the environment.

[0017] (3) A negative pressure gauge is installed inside the ventilation pipe below the valve plate, and a driving motor drives the impeller to rotate inside the mounting cover to form a negative pressure. When the adjusting wrench is turned to drive the valve plate to adjust, the opening of the ventilation pipe is different, resulting in different changes in the internal negative pressure. The suction force inside the ventilation pipe can be detected by the negative pressure gauge, so that the change in the negative pressure inside the ventilation pipe can be known when the valve plate is adjusted, which serves as an adjustment indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the ventilation assembly structure of the present utility model;

[0020] Figure 3 This is a schematic diagram of the filter assembly structure of the present utility model;

[0021] Figure 4 This is a schematic diagram of the valve plate installation structure of the present utility model.

[0022] In the figure: 100, ventilation assembly; 101, negative pressure hood; 102, ventilation pipe; 103, mounting cover; 104, exhaust pipe; 105, impeller; 106, support frame; 107, drive motor; 108, active flywheel; 109, driven flywheel; 1010, transmission belt; 200, filter assembly; 201, mounting frame; 202, fine filter; 203, activated carbon filter; 300, mounting slot; 400, slide bar; 500, handle; 600, support; 601, limit rod; 700, adjusting wrench; 800, valve plate; 900, negative pressure gauge. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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.

[0024] See also Figure 1-Figure 4 , a ventilation device for atomic absorption, comprising: a ventilation component 100 and a filter component 200;

[0025] See also Figure 1 , Figure 2 The ventilation assembly 100 includes a negative pressure hood 101 for collecting smoke, a ventilation pipe 102 is installed on the top of the negative pressure hood 101, a mounting hood 103 is installed at one end of the ventilation pipe 102, an exhaust pipe 104 is installed on one side of the mounting hood 103, an impeller 105 is rotatably installed inside the mounting hood 103, a support frame 106 is installed on one side of the mounting hood 103, a driving motor 107 is installed on the surface of the support frame 106, the output end of the driving motor 107 is transmission-connected to the impeller 105, a driving flywheel 108 is fixedly installed on the output end of the driving motor 107, a driven flywheel 109 is fixedly installed on the back of the impeller 105, and the driving flywheel 108 and the driven flywheel 109 are transmission-connected by a transmission belt 1010.

[0026] During specific use: a drive motor 107 is installed on the surface of the support frame 106. The rotation of the drive motor 107 drives the active flywheel 108 to rotate. The rotation of the active flywheel 108 drives the driven flywheel 109 to follow the rotation through the transmission belt 1010. The driven flywheel 109 drives the impeller 105 inside the mounting cover 103 to rotate. The rotation of the impeller 105 causes negative pressure to be formed inside the mounting cover 103. A negative pressure environment is formed at the negative pressure cover 101 connected to the mounting cover 103 through the ventilation pipe 102, which is convenient for ventilation of the atomic absorption device. The sucked air is discharged through the exhaust pipe 104. The drive motor 107 and the impeller 105 are installed at the end away from the negative pressure cover 101 to reduce the noise at the negative pressure cover 101 end.

[0027] See also Figure 1 , Figure 3 The filter assembly 200 includes two mounting frames 201 arranged inside the negative pressure cover 101, wherein a fine filter screen 202 is installed inside one of the mounting frames 201, and an activated carbon filter screen 203 is installed inside the other mounting frame 201. The activated carbon filter screen 203 is arranged on the top of the fine filter screen 202.

[0028] During specific use: two installation frames 201 are installed inside the negative pressure cover 101, one of which is equipped with a fine filter 202, and the other is equipped with an activated carbon filter 203. The activated carbon filter 203 is installed on the top of the fine filter 202. The sucked air is filtered when passing through the fine filter 202, so as to reduce the content of impurity particles in the air. The filtered air passes through the activated carbon filter 203, which is convenient for adsorption and filtration of harmful substances in the gas, so that the discharged gas is harmless to the environment.

[0029] See also Figure 3 A mounting groove 300 is provided on one side of the negative pressure cover 101 , and slide bars 400 are installed on both sides of the mounting frame 201 . The slide bars 400 slide inside the mounting groove 300 , and a handle 500 is fixedly installed at one end of the mounting frame 201 .

[0030] During specific use: a mounting groove 300 is opened on one side of the negative pressure cover 101, and the mounting frame 201 slides in the mounting groove 300 through the slide bars 400 on both sides. By pulling the handle 500, the mounting frame 201 can be easily removed from the mounting groove 300, which facilitates the cleaning and replacement of the filter net inside the mounting frame 201 to ensure the filtering effect.

[0031] See also Figure 4 A support 600 is fixedly installed on the surface of the ventilation pipe 102, an adjusting wrench 700 is rotatably installed on the surface of the support 600, a valve plate 800 is rotatably installed inside the ventilation pipe 102, one end of the adjusting wrench 700 is fixedly connected to the valve plate 800, and a limiting rod 601 is installed on the top of the surface of the support 600.

[0032] During specific use: a support 600 is installed on the surface of the ventilation pipe 102, and an adjusting wrench 700 is installed on the surface of the support 600. Rotating the adjusting wrench 700 drives the valve plate 800 inside the ventilation pipe 102 to rotate, thereby adjusting the opening size of the ventilation pipe 102, so as to adjust the suction force of the negative pressure cover 101. The limiting rod 601 installed on the surface of the support 600 is used to limit the rotation angle of the adjusting wrench 700. When the adjusting wrench 700 contacts the limiting rod 601, the valve plate 800 is in the maximum opening state.

[0033] See also Figure 1 The ventilation tube 102 is a telescopic and bendable aluminum foil tube.

[0034] During specific use: the ventilation pipe 102 is an aluminum foil tube, which is convenient for adjusting the angle and height of the negative pressure cover 101 during installation.

[0035] See also Figure 4 A negative pressure gauge 900 is installed inside the ventilation pipe 102 below the valve plate 800.

[0036] During specific use: when the adjusting wrench 700 drives the valve plate 800 to rotate and adjust the opening, the negative pressure gauge 900 can detect the suction force inside the ventilation pipe 102 and play the role of adjustment indication.

[0037] A driving motor 107 is installed on the surface of the support frame 106. The rotation of the driving motor 107 drives the active flywheel 108 to rotate. The rotation of the active flywheel 108 drives the driven flywheel 109 to follow the rotation through the transmission belt 1010. The driven flywheel 109 drives the impeller 105 inside the mounting cover 103 to rotate. The rotation of the impeller 105 causes negative pressure to be formed inside the mounting cover 103, and a negative pressure environment is formed at the negative pressure cover 101 connected to the mounting cover 103 through the ventilation pipe 102, which is convenient for ventilation of the atomic absorption device. The sucked air is discharged through the exhaust pipe 104. The driving motor 107 and the impeller 105 are installed at the end away from the negative pressure cover 101, so as to reduce the noise at the negative pressure cover 101 end.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ventilation device for atomic absorption, characterized in that include: A ventilation assembly (100), the ventilation assembly (100) comprising a negative pressure hood (101) for collecting smoke, a ventilation pipe (102) being installed on the top of the negative pressure hood (101), a mounting hood (103) being installed at one end of the ventilation pipe (102), an exhaust pipe (104) being installed on one side of the mounting hood (103), an impeller (105) being rotatably mounted inside the mounting hood (103), a support frame (106) being installed on one side of the mounting hood (103), a driving motor (107) being installed on the surface of the supporting frame (106), and an output end of the driving motor (107) being transmission-connected to the impeller (105); A filter assembly (200) includes two mounting frames (201) disposed inside a negative pressure hood (101), wherein a fine filter screen (202) is mounted inside one of the mounting frames (201), and an activated carbon filter screen (203) is mounted inside the other mounting frame (201), wherein the activated carbon filter screen (203) is disposed on top of the fine filter screen (202).

2. The atomic absorption ventilation device according to claim 1, characterized in that: A driving flywheel (108) is fixedly mounted on the output end of the driving motor (107), a driven flywheel (109) is fixedly mounted on the back of the impeller (105), and the driving flywheel (108) and the driven flywheel (109) are connected to each other via a transmission belt (1010).

3. The atomic absorption ventilation device according to claim 1, characterized in that: A mounting groove (300) is provided on one side of the negative pressure cover (101), and slide bars (400) are installed on both sides of the mounting frame (201). The slide bars (400) slide inside the mounting groove (300), and a handle (500) is fixedly installed on one end of the mounting frame (201).

4. The ventilation device for atomic absorption according to claim 1, characterized in that: A support (600) is fixedly mounted on the surface of the ventilation pipe (102), an adjusting wrench (700) is rotatably mounted on the surface of the support (600), a valve plate (800) is rotatably mounted inside the ventilation pipe (102), and one end of the adjusting wrench (700) is fixedly connected to the valve plate (800).

5. The ventilation device for atomic absorption according to claim 4, characterized in that: A limiting rod (601) is installed on the top of the surface of the support (600).

6. The ventilation device for atomic absorption according to claim 1, characterized in that: The ventilation tube (102) is a telescopic and bendable aluminum foil tube.

7. The ventilation device for atomic absorption according to claim 1, characterized in that: A negative pressure gauge (900) is installed inside the ventilation pipe (102) below the valve plate (800).

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