PP clean air type fume hood

Abstract

The utility model discloses a kind of PP fume hoods of clean gas, it is related to fume hood field, the utility model includes fume hood main part and cylinder, the inside top of fume hood main part is respectively equipped with fixed ring and internal thread cylinder, the inside of cylinder is respectively equipped with filter screen cylinder and activated carbon layer, the bottom of cylinder is equipped with air inlet, the bottom of cylinder is equipped with collection assembly.The utility model is equipped with collection assembly, when the impurities adhered inside filter screen cylinder need to be cleaned, staff can rotate collection ring by push block, collection ring will drive cleaning brush to rotate after rotating, cleaning brush can clean the impurities adhered to filter screen cylinder inner wall after rotating, and the impurities cleaned down are dropped to the inside of the collection groove of collection ring, to avoid the impurities cleaned down directly falling on workbench, to achieve the purpose of collecting impurities.

Description

Technical Field

[0001] This utility model relates to the field of fume hoods, specifically a clean air type PP fume hood. Background Technology

[0002] A fume hood is a safety device specifically designed for laboratory environments. It typically consists of a housing, filter, fan, and control system. Its main function is to protect workers and the environment from harmful substances. Its working principle is to filter out harmful gases in the laboratory through a high-efficiency filtration system and exhaust them outdoors, thereby ensuring the quality and safety of the air in the laboratory.

[0003] According to Chinese Patent No. CN221361796U, an explosion-proof ventilation hood is disclosed. This explosion-proof ventilation hood filters impurities in the air drawn in through the exhaust hood by setting a filter screen. With the action of the disassembly mechanism, the filter screen and the exhaust hood can be quickly installed and disassembled, which facilitates the replacement of the filter screen and improves the connection stability between the filter screen and the exhaust hood.

[0004] Regarding the aforementioned patent content, a filter screen is provided to filter impurities in the gas, and a movable cleaning brush is also provided so that the cleaning brush can clean the impurities attached to the filter screen. However, the cleaned impurities will fall directly onto the worktable, causing impurities to accumulate on the worktable and affecting subsequent experiments on the worktable, thereby reducing the collection effect of impurities. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a clean air type PP fume hood to solve the technical problem of inconvenience in collecting the impurities that are cleaned off the filter screen.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a clean air PP fume hood, comprising a fume hood body and a cylindrical body. A fixing ring and an internally threaded cylinder are respectively installed on the upper interior of the fume hood body. A filter screen cylinder and an activated carbon layer are respectively installed inside the cylindrical body. An air inlet is provided at the bottom of the cylindrical body. A collection assembly is provided at the bottom of the cylindrical body, and the collection assembly further includes an installation groove opened at the bottom of the cylindrical body. An installation plate is inserted into the installation groove, and an annular groove is opened on the inner wall of the installation plate. Multiple sliders are arranged inside the annular groove, and a collection ring is installed between the multiple sliders. A collection groove is opened at the top of the collection ring, and a cleaning brush is installed on the inner wall of the collection groove. A push block is fixed at the bottom of the collection ring.

[0007] By adopting the above technical solution, when it is necessary to clean the impurities attached to the inside of the filter screen, the staff can rotate the collection ring by pushing the block. After the collection ring rotates, it will drive the cleaning brush to rotate.

[0008] Furthermore, the collecting assembly also includes positioning grooves on both sides of the bottom of the cylinder, with positioning blocks inserted inside the positioning grooves, and the bottom of the positioning blocks being fixedly connected to the top of the mounting plate.

[0009] By adopting the above technical solution, when installing the installation plate, the positioning block can be inserted into the positioning slot to position the installation plate.

[0010] Furthermore, locking bolts extending into the cylinder are installed on both sides of the bottom of the mounting plate, and the mounting plate is detachably connected to the cylinder.

[0011] By adopting the above technical solution, after the locking bolt is screwed into the mounting plate and the cylinder, the mounting plate can be locked and fixed to prevent it from falling off the cylinder.

[0012] Furthermore, the internal threaded cylinder has a threaded head connected to its internal thread, and the cylinder body is installed at the bottom of the threaded head.

[0013] By adopting the above technical solution, when it is necessary to disassemble the cylinder, the operator can rotate the cylinder and unscrew the threaded head from the inside of the internal thread cylinder, thus removing the cylinder and achieving the purpose of disassembling the cylinder.

[0014] Furthermore, a sealing groove is provided at the bottom of the fixing ring, and a sealing ring is inserted inside the sealing groove, with the bottom of the sealing ring fixedly connected to the top of the cylinder.

[0015] By adopting the above technical solution, the sealing ring can be inserted into the sealing groove to improve the sealing performance between the fixing ring and the cylinder.

[0016] Furthermore, an air extractor and an air guide box are respectively installed on the top of the fume hood body, and an air guide pipe extending into the interior of the fume hood body is connected to the bottom of the air guide box.

[0017] By adopting the above technical solution, the gas enters the gas box through the gas guide pipe and is then discharged through the gas outlet pipe.

[0018] Furthermore, the exhaust end of the vacuum pump is connected to an exhaust pipe, and the intake end of the vacuum pump is connected to an exhaust pipe extending into the air guide box.

[0019] By adopting the above technical solution, when the air extraction fan is working, the air inside the fume hood can be extracted through the air extraction pipe.

[0020] Furthermore, the outer surface of the fume hood body is also provided with a sliding door, the interior of the fume hood body is provided with a workbench, and the top of the cylinder is also provided with multiple exhaust ports.

[0021] By adopting the above technical solution, after the gas is filtered through the filter screen and activated carbon layer, it will enter the interior of the fixed ring through the exhaust port.

[0022] Furthermore, one side of the cleaning brush is attached to the inner wall of the filter cylinder, and the collection ring is located inside the air inlet.

[0023] By adopting the above technical solution, the cleaning brush will clean the impurities attached to the filter screen when it rotates, and the cleaned impurities will fall into the collection tank.

[0024] Furthermore, the slider is slidably connected to the annular groove, and the positioning block is adapted to the positioning groove.

[0025] By adopting the above technical solution, the slider can slide inside the annular groove, thereby improving the stability of the collecting ring during rotation.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model is equipped with a collection component. When it is necessary to clean the impurities attached to the inside of the filter cylinder, the operator can rotate the collection ring by pushing the block. After the collection ring rotates, it will drive the cleaning brush to rotate. After the cleaning brush rotates, it can clean the impurities attached to the inner wall of the filter cylinder. The cleaned impurities fall into the collection groove of the collection ring, thereby preventing the cleaned impurities from falling directly onto the worktable, thus achieving the purpose of collecting impurities.

[0028] 2. This utility model is equipped with a positioning block, a positioning groove, and a locking bolt. When it is necessary to clean the impurities in the collection tank, the operator can rotate the locking bolt to unscrew it from the mounting plate and the cylinder. At this time, the mounting plate is no longer locked and limited. Then the mounting plate and the collection ring can be removed so that the impurities in the collection tank can be poured out, thereby cleaning the impurities in the collection tank. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall orthographic structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the cylindrical body structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the cylindrical body of this utility model;

[0033] Figure 5 This is a schematic diagram of the filter cylinder structure of this utility model;

[0034] Figure 6 This is a schematic diagram of the collection ring structure of this utility model;

[0035] Figure 7 For the present utility model Figure 2 A magnified structural diagram of point A in the middle.

[0036] In the diagram: 1. Fume hood body; 2. Workbench; 3. Sliding door; 4. Air guide box; 5. Air guide pipe; 6. Air extractor; 7. Air extraction pipe; 8. Fixing ring; 9. Collection assembly; 901. Mounting slot; 902. Mounting plate; 903. Positioning slot; 904. Collection ring; 905. Collection slot; 906. Cleaning brush; 907. Push block; 908. Sliding block; 909. Annular groove; 910. Positioning block; 911. Locking bolt; 10. Cylinder; 11. Exhaust port; 12. Activated carbon layer; 13. Sealing ring; 14. Sealing groove; 15. Internally threaded cylinder; 16. Threaded head; 17. Filter screen cylinder; 18. Air inlet. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1:

[0040] A type of clean air PP fume hood, such as Figures 1-7 As shown, the fume hood includes a main body 1 and a cylindrical body 10. The main body 1 is made of PP material. A fixing ring 8 and an internally threaded cylinder 15 are installed on the upper part of the interior of the main body 1. A filter screen cylinder 17 and an activated carbon layer 12 are installed inside the cylindrical body 10. An air inlet 18 is opened at the bottom of the cylindrical body 10. A collection component 9 is provided at the bottom of the cylindrical body 10. A threaded head 16 is connected to the internal thread of the internally threaded cylinder 15, and the cylindrical body 10 is installed at the bottom of the threaded head 16. When the cylindrical body 10 needs to be disassembled, the operator can rotate the cylindrical body 10 and unscrew the threaded head 16 from the inside of the internally threaded cylinder 15, so that the cylindrical body 10 can be removed, thus achieving the purpose of disassembling the cylindrical body 10. An exhaust fan 6 and an air guide box 4 are installed on the top of the fume hood main body 1.

[0041] See Figures 1-6The bottom of the air guide box 4 is connected to an air guide pipe 5 that extends into the interior of the fume hood body 1. Gas enters the interior of the air guide box 4 through the air guide pipe 5 and is then discharged through the air outlet pipe. The air outlet end of the air extractor 6 is connected to an air outlet pipe, and the air inlet end of the air extractor 6 is connected to an air extraction pipe 7 that extends into the interior of the air guide box 4. When the air extractor 6 is working, air inside the fume hood body 1 can be extracted through the air extraction pipe 7. A sliding door 3 is also slidably provided on the outer surface of the fume hood body 1. A workbench 2 is provided inside the fume hood body 1. Multiple exhaust ports 11 are also provided on the top of the cylinder 10. After the gas is filtered by the filter screen cylinder 17 and the activated carbon layer 12, it will enter the interior of the fixed ring 8 through the exhaust ports 11.

[0042] Specifically, the collection component 9 also includes a mounting groove 901 located at the bottom of the cylinder 10. A mounting plate 902 is inserted into the mounting groove 901, and an annular groove 909 is formed on the inner wall of the mounting plate 902. Multiple sliders 908 are arranged inside the annular groove 909, and a collection ring 904 is installed between the sliders 908. A collection groove 905 is formed at the top of the collection ring 904, and a cleaning brush 906 is installed on the inner wall of the collection groove 905. A pusher 907 is fixed to the bottom of the collection ring 904. When it is necessary to clean impurities adhering to the inside of the filter cylinder 17... The operator can rotate the collection ring 904 by pushing the block 907. After the collection ring 904 rotates, it will drive the cleaning brush 906 to rotate. One side of the cleaning brush 906 is in contact with the inner wall of the filter cylinder 17. The collection ring 904 is located inside the air inlet 18. When the cleaning brush 906 rotates, it will clean the impurities attached to the filter cylinder 17. The cleaned impurities will fall into the collection groove 905. The slider 908 is slidably connected to the annular groove 909 so that the slider 908 can slide inside the annular groove 909, thereby improving the stability of the collection ring 904 when it rotates.

[0043] Example 2:

[0044] Based on the above embodiment 1, the following structure will be set to facilitate the installation of installation disk 902.

[0045] Specifically, the collecting component 9 also includes positioning grooves 903 on both sides of the bottom of the cylinder 10. Positioning blocks 910 are inserted into the positioning grooves 903. The bottom of the positioning blocks 910 is fixedly connected to the top of the mounting plate 902. When installing the mounting plate 902, the positioning blocks 910 can be inserted into the positioning grooves 903 to position the mounting plate 902. Locking bolts 911 extending into the cylinder 10 are installed on both sides of the bottom of the mounting plate 902. The mounting plate 902 is detachably connected to the cylinder 10. When the locking bolts 911 are screwed into the mounting plate 902 and the cylinder 10, the mounting plate 902 can be locked and fixed to prevent it from falling off the cylinder 10. The positioning blocks 910 are adapted to the positioning grooves 903.

[0046] Example 3:

[0047] Based on the above embodiment 1, in order to improve the sealing between the fixing ring 8 and the cylinder 10, the following structure will be set.

[0048] See Figures 2-5 The bottom of the fixing ring 8 is provided with a sealing groove 14, and a sealing ring 13 is inserted into the sealing groove 14. The bottom of the sealing ring 13 is fixedly connected to the top of the cylinder 10. After the sealing ring 13 is inserted into the sealing groove 14, the sealing performance between the fixing ring 8 and the cylinder 10 can be improved.

[0049] The working principle of this utility model is as follows: First, before use, the power supply is turned on. When the staff uses the fume hood, the exhaust fan 6 can be started. The exhaust fan 6 can extract the gas inside the fume hood body 1 through the exhaust pipe 7. The gas enters the cylinder 10 through the air inlet 18, is filtered by the filter screen 17, and then enters the activated carbon layer 12. After being adsorbed and purified by the activated carbon layer 12, it enters the air guide pipe 5 through the exhaust port 11, then enters the air guide box 4, and is discharged through the air outlet pipe.

[0050] When it is necessary to clean the impurities attached to the inside of the filter cylinder 17, the operator can rotate the collection ring 904 by pushing the block 907. After the collection ring 904 rotates, it will drive the cleaning brush 906 to rotate. After the cleaning brush 906 rotates, it can clean the impurities attached to the inner wall of the filter cylinder 17. The cleaned impurities fall into the collection groove 905 of the collection ring 904, thus preventing the cleaned impurities from falling directly onto the workbench 2.

[0051] When the filter cylinder 17 and activated carbon layer 12 need to be replaced, the operator can rotate the cylinder 10 to unscrew the threaded head 16 on the cylinder 10 from the internal threaded cylinder 15, and then remove the cylinder 10. Next, the operator can rotate the locking bolt 911 to unscrew the locking bolt 911 from the mounting plate 902 and the cylinder 10. At this time, the mounting plate 902 is no longer locked and limited. Then the mounting plate 902 and the collection ring 904 can be removed so that the impurities in the collection tank 905 can be poured out. At the same time, the cylinder 10, activated carbon layer 12 and filter cylinder 17 can be replaced.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A clean air type PP fume hood, comprising a fume hood body (1) and a cylindrical body (10), characterized in that: The upper part of the fume hood body (1) is equipped with a fixing ring (8) and an internal threaded cylinder (15). The inside of the cylinder (10) is equipped with a filter cylinder (17) and an activated carbon layer (12). The bottom of the cylinder (10) is provided with an air inlet (18). The bottom of the cylinder (10) is provided with a collection component (9). The collection component (9) also includes an installation groove (901) opened at the bottom of the cylinder (10). An installation plate (902) is inserted into the installation groove (901). An annular groove (909) is opened on the inner wall of the installation plate (902). Multiple sliders (908) are provided inside the annular groove (909). A collection ring (904) is installed between the multiple sliders (908). A collection groove (905) is opened at the top of the collection ring (904). A cleaning brush (906) is installed on the inner wall of the collection groove (905). A push block (907) is fixed at the bottom of the collection ring (904).

2. The clean air type PP fume hood according to claim 1, characterized in that: The collecting component (9) also includes positioning grooves (903) on both sides of the bottom of the cylinder (10), and positioning blocks (910) are inserted inside the positioning grooves (903). The bottom of the positioning blocks (910) is fixedly connected to the top of the mounting plate (902).

3. A clean air PP fume hood according to claim 1, characterized in that: Both sides of the bottom of the mounting plate (902) are fitted with locking bolts (911) that extend into the cylinder (10), and the mounting plate (902) is detachably connected to the cylinder (10).

4. A clean air PP fume hood according to claim 1, characterized in that: The internal threaded cylinder (15) has a threaded head (16) connected to its internal thread, and the bottom of the threaded head (16) is fitted with a cylinder body (10).

5. A clean air PP fume hood according to claim 4, characterized in that: The bottom of the fixing ring (8) is provided with a sealing groove (14), and a sealing ring (13) is inserted inside the sealing groove (14), and the bottom of the sealing ring (13) is fixedly connected to the top of the cylinder (10).

6. A clean air PP fume hood according to claim 1, characterized in that: The top of the fume hood body (1) is equipped with an air extractor (6) and an air guide box (4), and the bottom of the air guide box (4) is connected to an air guide pipe (5) extending into the interior of the fume hood body (1).

7. A clean air PP fume hood according to claim 6, characterized in that: The exhaust end of the vacuum pump (6) is connected to an exhaust pipe, and the intake end of the vacuum pump (6) is connected to an exhaust pipe (7) extending into the air guide box (4).

8. A clean air PP fume hood according to claim 1, characterized in that: The outer surface of the fume hood body (1) is also provided with a sliding door (3), the inside of the fume hood body (1) is provided with a workbench (2), and the top of the cylinder (10) is also provided with multiple exhaust ports (11).

9. A clean air PP fume hood according to claim 1, characterized in that: One side of the cleaning brush (906) is attached to the inner wall of the filter cylinder (17), and the collection ring (904) is located inside the air inlet (18).

10. A clean air PP fume hood according to claim 2, characterized in that: The slider (908) is slidably connected to the annular groove (909), and the positioning block (910) is adapted to the positioning groove (903).

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