Laboratory gas discharging device

Abstract

The utility model relates to the technical field of gas discharging devices, in particular to a laboratory gas discharging device which comprises a laboratory, a protection frame is arranged at the top of the laboratory, an exhaust cylinder is arranged at the top of the protection frame, an air extracting pump is fixedly connected to the inner top wall of the protection frame, and the exhaust cylinder is fixedly connected to the inner top wall of the protection frame. An air inlet of the sucking pump is in threaded connection with an air inlet frame, the outer surface of the air inlet frame is connected with the inner wall of the protection frame in an embedded mode, filter screens are arranged on the inner walls of the protection frame and the exhaust cylinder, and the dust screens are arranged on the outer surfaces of the protection frame and the exhaust cylinder. The air pump, the protection frame, the exhaust cylinder, the filter screen and the dustproof net are arranged, the exhaust effect is guaranteed, the exhaust efficiency is extremely high, application and popularization are facilitated, in addition, the button, the connecting plate, the clamping block, the groove and the second purification plate are arranged, an activated carbon filter element is convenient to replace, and the adsorption purification function of the second purification plate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas exhaust devices, in particular to a laboratory gas exhaust device. Background Art

[0002] Experiments in the laboratory that produce small amounts of toxic gases should be conducted in a fume hood, and the small amount of toxic gases should be discharged to the outside through exhaust equipment to avoid contaminating the indoor air.

[0003] Patent document CN220634380U discloses a safe discharge device for handling hazardous gases in laboratories, "including a laboratory body, a door body hingedly installed on one side of the laboratory body, a controller fixedly installed on the surface of the door body, and two trapezoidal vertical plates fixedly installed on the top of the laboratory body. By setting a filter unit and a purification unit, when the hazardous gas passes through the filter net set on the surface of the filter cover, the filter net can intercept dust particles or impurities in the filter cover to prevent these dust particles or impurities from being directly discharged into the atmosphere and polluting the atmosphere. The filtered hazardous gas continues to float toward the exhaust fan. When passing through the purification cover, multiple activated carbon filter elements can adsorb and purify the hazardous gas to prevent the hazardous gas from containing more harmful gases and being discharged into the atmosphere, which affects the health of surrounding workers and improves the safety of laboratory work."

[0004] However, in the above scheme, the filtered hazardous gas continues to float toward the exhaust fan and is eventually discharged from the exhaust fan outside the discharge tube. However, in actual use, the amount of harmful gas inhaled easily exceeds the amount discharged, thereby increasing the gas concentration and being squeezed, and easily exploding in the discharge tube, which reduces the practicality of the device and thus reduces the safety of the device. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem that the laboratory gas exhaust device in the prior art is prone to explosion when in use and to provide a laboratory gas exhaust device;

[0006] To achieve the above purpose, the utility model provides the following technical solution: a laboratory gas exhaust device, comprising:

[0007] A laboratory, wherein a protection frame is disposed on the top of the laboratory, and an exhaust duct is disposed on the top of the protection frame;

[0008] An air pump, the air pump is fixedly connected to the inner top wall of the protection frame, the air inlet of the air pump is threadedly connected to the air inlet frame, and the outer surface of the air inlet frame is engaged with the inner wall of the protection frame, and the inner walls of the protection frame and the exhaust cylinder are both provided with a filter screen;

[0009] A dustproof net is arranged on the outer surfaces of the protection frame and the exhaust cylinder, both sides of the top of the protection frame are embedded with a first purification plate, and the inner wall of the exhaust cylinder is rotatably connected with a second purification plate.

[0010] As an optional technical solution, a block is rotatably connected to the inner wall of the second purification plate, and a button is provided on the outer surface of the second purification plate.

[0011] As an optional technical solution, a connecting plate is overlapped on one side of the button, and the connecting plate is rotatably connected to the inner wall of the second purification plate.

[0012] As an optional technical solution, a spring is provided on the inner wall of the second purification plate, and an activated carbon filter element is embedded and connected to the inner walls of the first purification plate and the second purification plate.

[0013] As an optional technical solution, a groove is provided on the inner wall of the exhaust tube, and the clamping block is engaged and connected to the inside of the groove.

[0014] As an optional technical solution, a support plate is provided on the inner wall of the protection frame, and connecting blocks are fixedly installed on the opposite sides of the two first purification plates, and the connecting blocks penetrate and connect to one side of the support plate.

[0015] As an optional technical solution, the inner walls of the protection frame and the exhaust duct are both provided with exhaust fans, and the top of the protection frame is embedded with a sealing cover.

[0016] The technical solution provided by the utility model has the following technical effects:

[0017] 1. The laboratory gas exhaust device provided by the utility model comprises a laboratory, an air pump and a dustproof net, wherein a protection frame is arranged on the top of the laboratory, an exhaust pipe and an air pump are arranged on the top of the protection frame, the air pump is fixedly connected to the inner top wall of the protection frame, the air inlet of the air pump is threadedly connected to the air inlet frame, and the outer surface of the air inlet frame is connected with the inner wall of the protection frame in an inlaid manner, the inner walls of the protection frame and the exhaust pipe are both provided with a filter net and a dustproof net, the dustproof net is arranged on the outer surfaces of the protection frame and the exhaust pipe, the first purification plate is inlaid and connected to both sides of the top of the protection frame, and the inner wall of the exhaust pipe is rotatably connected with the second purification plate;

[0018] By using a vacuum pump, a protection frame, an exhaust duct, a filter and a dust screen in combination, the filter filters the particles attached to the gas, and the placement of the filter among the protection frame and the exhaust duct can avoid clogging of the filter, thereby improving the permeability of the filter and ensuring the exhaust effect. In addition, by setting up multiple dust screens, exhaust can be carried out in multiple directions, thereby improving the exhaust efficiency, and then quickly improving the air environment of the laboratory, which is beneficial to the health of users.

[0019] 2. The laboratory gas exhaust device provided by the utility model comprises a card block, a groove and a second purification plate, the inner wall of the second purification plate is rotatably connected with the card block, the outer surface of the second purification plate is provided with a button, one side of the button is overlapped with a connecting plate, and the connecting plate is rotatably connected to the inner wall of the second purification plate, the inner wall of the second purification plate is provided with a spring, the inner walls of the first purification plate and the second purification plate are both connected with an activated carbon filter element, the inner wall of the exhaust cylinder is provided with a groove, and the card block is connected to the inside of the groove;

[0020] By using buttons, connecting plates, blocks, grooves and the second purification plate in combination, the second purification plate can be unfolded, thereby facilitating and quickly replacing the activated carbon filter element in the second purification plate, thereby ensuring the adsorption and purification function of the second purification plate and preventing the gas from being directly discharged into the atmosphere and causing an impact on human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the protection frame structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the card block structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the second purification plate of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the first purification plate of the utility model;

[0026] In the figure: 1. laboratory; 2. protection frame; 3. exhaust duct; 4. vacuum pump; 5. air intake frame; 6. filter screen; 7. dust screen; 8. first purification board; 9. second purification board; 10. block; 11. button; 12. connecting plate; 13. spring; 14. activated carbon filter element; 15. groove; 16. support plate; 17. connecting block; 18. exhaust fan; 19. sealing cover. DETAILED DESCRIPTION

[0027] Reference Figure 1 and Figure 2, the utility model provides an embodiment: a laboratory gas exhaust device, including a laboratory 1, a protection frame 2 is arranged on the top of the laboratory 1, an exhaust pipe 3 and an air pump 4 are arranged on the top of the protection frame 2, the air pump 4 is fixedly connected to the inner top wall of the protection frame 2, the air inlet of the air pump 4 is threadedly connected to the air intake frame 5, and the outer surface of the air intake frame 5 is embedded and connected with the inner wall of the protection frame 2, the inner walls of the protection frame 2 and the exhaust pipe 3 are both provided with a filter screen 6 and a dustproof net 7, the dustproof net 7 is arranged on the outer surfaces of the protection frame 2 and the exhaust pipe 3, both sides of the top of the protection frame 2 are embedded and connected with a first purification plate 8, and the inner wall of the exhaust pipe 3 is rotatably connected with a second purification plate 9;

[0028] When the gas is discharged, by turning on the vacuum pump 4, the gas can be drawn from the laboratory 1 into the protection frame 2 through the air intake frame 5, and the gas passes through the filter 6, which can filter the dust particles or impurities in the gas to avoid the problem of particulate dust polluting the environment. Then the gas passes through the first purification plate 8 and the second purification plate 9, and the activated carbon filter element 14 is used to adsorb and purify the harmful gas to avoid the harmful gas from being discharged into the atmosphere and affecting people's health. The position of the filter 6 is set so that the dust particles fall downward under the action of their own gravity to avoid clogging the filter 6, which is convenient for exhaust. In addition, the setting of multiple dustproof nets 7 is convenient for multi-directional exhaust, which improves the exhaust efficiency. While exhausting, the exhaust fan 18 can dissipate heat, thereby extending the service life of the exhaust fan 18. The protection frame 2 is set to a table, which can reduce the amount of external dust attached to the dustproof net 7, and the permeability of the dustproof net 7 is arranged to facilitate exhaust.

[0029] Reference Figure 3 and Figure 4 The inner wall of the second purification plate 9 is rotatably connected with a block 10, the outer surface of the second purification plate 9 is provided with a button 11, one side of the button 11 is overlapped with a connecting plate 12, and the connecting plate 12 is rotatably connected to the inner wall of the second purification plate 9, the inner wall of the second purification plate 9 is provided with a spring 13, the inner walls of the first purification plate 8 and the second purification plate 9 are both embedded with an activated carbon filter element 14, the inner wall of the exhaust cylinder 3 is provided with a groove 15, and the block 10 is embedded in the groove 15;

[0030] By pressing the button 11, the button 11 pushes a corner of the connecting plate 12 to rotate the connecting plate 12, and then the connecting plate 12 pushes the block 10 to rotate, so that the block 10 is away from the groove 15. At the same time, the block 10 squeezes the spring 13, and then the second purification plate 9 is rotated to keep it away from the exhaust pipe 3, so as to facilitate the replacement of the activated carbon filter element 14 in the second purification plate 9, thereby ensuring the purification function of the second purification plate 9 and making the surrounding environment safer, and the spring 13 pushes the block 10 to rotate and return it to its position.

[0031] Reference Figure 5, a support plate 16 is provided on the inner wall of the protection frame 2, and a connecting block 17 is fixedly installed on the opposite sides of the two first purification plates 8, and the connecting block 17 penetrates and is connected to one side of the support plate 16;

[0032] The staff drives the first purification plate 8 to move upward, and then the first purification plate 8 drives the connecting block 17 to move upward along the inner wall of the support plate 16, so that the first purification plate 8 can be taken out of the protection frame 2, and then the activated carbon filter element 14 in the first purification plate 8 can be replaced, thereby ensuring the purification function of the first purification plate 8.

[0033] Reference Figure 1 and Figure 2 The inner walls of the protection frame 2 and the exhaust tube 3 are both provided with exhaust fans 18, and the top of the protection frame 2 is connected with a sealing cover 19;

[0034] The exhaust fan 18 increases the air circulation rate in the exhaust tube 3, making it easier to discharge the gas. By opening the sealing cover 19, the dust particles in the protection frame 2 can be easily processed using the opening.

[0035] Working principle, when the gas is discharged, the filter 6 filters the gas through the combination of the vacuum pump 4, the protection frame 2, the exhaust pipe 3 and the filter 6, and the placement of the filter 6, the protection frame 2 and the exhaust pipe 3 can prevent the filter 6 from being blocked, thereby ensuring the permeability of the filter 6 and making the exhaust effect better, and the provision of multiple dust-proof nets 7 facilitates multi-directional exhaust, thereby improving the exhaust efficiency, thereby quickly improving the air quality of the laboratory 1, and in addition, through the combination of the button 11, the connecting plate 12, the block 10, the groove 15 and the second purification plate 9, the second purification plate 9 can be moved away from the exhaust pipe 3, and then the activated carbon filter element 14 in the second purification plate 9 can be easily removed, so that the new activated carbon filter element 14 can be quickly replaced, thereby ensuring the adsorption and purification function of the second purification plate 9 and avoiding direct discharge into the atmosphere and affecting human health.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A laboratory gas exhaust device, comprising: A laboratory (1), characterized in that: a protective frame (2) is provided on the top of the laboratory (1), and an exhaust duct (3) is provided on the top of the protective frame (2); An air pump (4), the air pump (4) being fixedly connected to the inner top wall of the protection frame (2), the air inlet of the air pump (4) being threadedly connected to an air inlet frame (5), and the outer surface of the air inlet frame (5) being engaged with the inner wall of the protection frame (2), and the inner walls of the protection frame (2) and the exhaust cylinder (3) are both provided with a filter screen (6); A dustproof net (7), the dustproof net (7) is arranged on the outer surface of the protection frame (2) and the exhaust tube (3), the first purification plate (8) is embedded and connected to both sides of the top of the protection frame (2), and the inner wall of the exhaust tube (3) is rotatably connected to the second purification plate (9).

2. The laboratory gas exhaust device according to claim 1, characterized in that: The inner wall of the second purification plate (9) is rotatably connected with a clamping block (10), and the outer surface of the second purification plate (9) is provided with a button (11).

3. The laboratory gas exhaust device according to claim 2, characterized in that: A connecting plate (12) is overlapped on one side of the button (11), and the connecting plate (12) is rotatably connected to the inner wall of the second purification plate (9).

4. The laboratory gas exhaust device according to claim 1, characterized in that: The inner wall of the second purification plate (9) is provided with a spring (13), and the inner walls of the first purification plate (8) and the second purification plate (9) are both embedded and connected with an activated carbon filter element (14).

5. The laboratory gas exhaust device according to claim 1, characterized in that: The inner wall of the exhaust cylinder (3) is provided with a groove (15), and the clamping block (10) is engaged and connected inside the groove (15).

6. The laboratory gas exhaust device according to claim 1, characterized in that: The inner wall of the protection frame (2) is provided with a support plate (16), and the two first purification plates (8) are fixedly mounted on one side facing each other with a connection block (17), and the connection block (17) penetrates and is connected to one side of the support plate (16).

7. The laboratory gas exhaust device according to claim 1, characterized in that: The inner walls of the protection frame (2) and the exhaust cylinder (3) are both provided with an exhaust fan (18), and the top of the protection frame (2) is embeddedly connected with a sealing cover (19).

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