Ventilation cabinet with filtering function

Abstract

The utility model relates to the technical field of fume cupboards, in particular to a fume cupboard with a filtering function, which comprises a fume cupboard body, a working space arranged inside the fume cupboard body, an operating platform arranged below the working space, two guide plates fixed on the inner side of the working space, a confluence frame fixed at the top end of the fume cupboard, and an opening arranged on one side of the confluence frame. A plurality of filter plates are clamped between the bottom plate and the baffle plate; a round opening is formed in the top end of the filter frame; an air outlet is formed in the top end of the confluence frame and is positioned at the round opening; and a sealing ring is embedded in the edge of one end of the filter frame, which is close to the opening. The utility model solves the problems that the existing fume hood is generally not provided with a filtering structure, and the output gas is generally treated in a centralized manner, so that the pressure of treatment equipment is too high, and the treatment effect is influenced.

Description

Technical Field

[0001] This utility model relates to the field of fume hood technology, specifically to a fume hood with a filtration function. Background Technology

[0002] Fume hoods are important safety equipment in laboratories, mainly used to remove harmful gases, vapors, dust and other pollutants generated during experiments, protecting the health and safety of laboratory personnel.

[0003] Structurally, it generally includes a cabinet, with a workspace inside the cabinet. The workspace is equipped with a baffle plate, a ventilation grille on one side of the cabinet, and a manifold at the top of the cabinet. During operation, air in the laboratory enters the workspace through the ventilation grille on one side of the cabinet, then passes through the baffle plate and exits through the manifold to achieve a ventilation effect.

[0004] However, existing fume hoods generally do not have internal filtration structures. They typically collect the gas from several fume hoods through ventilation ducts and then process it centrally. This can cause excessive pressure on the filtration equipment, affecting its service life and the effectiveness of gas treatment. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing fume hoods generally do not have a filtration structure, and their output gas is usually centrally processed, which can cause excessive pressure on the processing equipment and affect the processing effect.

[0006] To solve the above problems, the technical solution adopted by this utility model is a fume hood with a filtration function, including a fume hood body, a working space inside the fume hood body, an operating table below the working space, two guide plates fixed inside the working space, a converging frame fixed at the top of the fume hood body, an opening on one side of the converging frame, a filter frame slidingly disposed in the opening, a baffle fixed inside the filter frame, a base plate fixed to the bottom of the filter frame by screws, several filter plates sandwiched between the base plate and the baffle, a round opening at the top of the filter frame, an air outlet at the round opening at the top of the converging frame, and a sealing ring nested at one edge of the filter frame near the opening.

[0007] As a further embodiment of this utility model: both the top of one side of the fume hood body and the bottom of one end of the operating table are provided with perforated grid plates that are connected to the work space for ventilation.

[0008] As a further embodiment of this utility model, a handle is fixed on one side of the filter frame to facilitate pulling the filter frame.

[0009] As a further embodiment of this utility model: baffles are fixed on the lower side of the baffle and the upper side of the base plate on the filter plate side to limit the position of the filter plate.

[0010] As a further embodiment of this utility model, the length of the base plate and the length of the baffle are both less than the length of the filter frame, so as to reserve an airflow channel.

[0011] As a further embodiment of this utility model: a filter plate is fixed on the upper side of the workspace at the junction frame to prevent debris from entering the air outlet.

[0012] Compared with the prior art, the advantages of this utility model are: this application adds a filter frame structure, the filter frame is set at the top of the fume hood cabinet and is provided with several filter plates, which can perform preliminary filtration of the passing air and improve the quality of the output air. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a three-dimensional view of the overall structure of a fume hood with filtration function according to this utility model.

[0015] Figure 2 This is a cross-sectional view of the overall structure of a fume hood with filtration function according to this utility model.

[0016] Figure 3 This is a cross-sectional view of the filter frame structure in a fume hood with filtration function according to the present invention.

[0017] Figure 4 This is an enlarged view of section A of a fume hood with filtration function according to this utility model.

[0018] In the attached image:

[0019] 1. Fume hood body; 2. Baffle plate; 3. Combination frame; 4. Filter frame; 5. Baffle; 6. Base plate; 7. Filter plate; 8. Sealing ring; 9. Handle; 10. Perforated filter plate; 11. Perforated grille; 1.1. Operating table; 3.1. Air outlet; 4.1. Round opening. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution to address the existing problems mentioned in the background art.

[0022] Combined with appendix Figure 1 , 2 It can be seen that the fume hood body 1 is included. The fume hood body 1 has a working space inside. Below the working space is the operating table 1.1. Two guide plates 2 are fixed inside the working space to facilitate the airflow. The top of one side of the fume hood body 1 and the bottom of one end of the operating table 1.1 are both provided with perforated grid plates 11 that are connected to the working space for ventilation. A filter plate 10 is fixed on the upper side of the working space at the junction frame 3 to prevent debris from entering the air outlet 3.1.

[0023] Combined with appendix Figure 2-4 It can be seen that a manifold frame 3 is fixed at the top of the fume hood body 1. An opening is opened on one side of the manifold frame 3, and a filter frame 4 is slidably installed in the opening. A handle 9 is fixed on one side of the filter frame 4 to facilitate pulling and moving the filter frame 4. A baffle 5 is fixed inside the filter frame 4. A base plate 6 is fixed to the lower side of the filter frame 4 by screws for easy disassembly. Several filter plates 7 are sandwiched between the base plate 6 and the baffle 5 to filter the passing air. A baffle is fixed on the lower side of the baffle 5 and the upper side of the base plate 6 on the side of the filter plate 7 to limit the position of the filter plate 7. A round opening 4.1 is opened at the top of the filter frame 4. An air outlet 3.1 is provided at the round opening 4.1 at the top of the manifold frame 3. A sealing ring 8 is nested at one edge of the filter frame 4 near the opening to provide a sealing effect. The length of the base plate 6 and the length of the baffle 5 are both less than the length of the filter frame 4 to allow for airflow channels.

[0024] The working principle of this application is as follows: When the fume hood body 1 is ventilating, the air in the laboratory will first move to the working space through the perforated grid plate 11, so as to bring the gas in the working space to the filter plate 10 and enter the filter frame 4. The gas will move from one end of the bottom plate 6 to the filter plate 7, be filtered by the filter plate 7, and then be output through the round opening 4.1 and the air outlet 3.1.

[0025] When it is necessary to replace the filter plate 7, the filter frame 4 can be pulled out from the opening, and then the screws fixing the base plate 6 can be removed to replace the filter plate 7. Then the base plate 6 can be installed and fixed, and the filter frame 4 can be inserted into the opening.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A fume hood with filtration function, comprising a fume hood body (1), wherein the fume hood body (1) has a working space inside, an operating table (1.1) is located below the working space, and two guide plates (2) are fixed inside the working space, characterized in that: The top of the fume hood body (1) is fixed with a manifold frame (3). An opening is provided on one side of the manifold frame (3). A filter frame (4) is slidably provided in the opening. A baffle (5) is fixed inside the filter frame (4). A base plate (6) is fixed to the bottom of the filter frame (4) by screws. Several filter plates (7) are sandwiched between the base plate (6) and the baffle (5). A round opening (4.1) is provided at the top of the filter frame (4). An air outlet (3.1) is provided at the round opening (4.1) at the top of the manifold frame (3). A sealing ring (8) is nested at one edge of the filter frame (4) near the opening.

2. A fume hood with filtration function according to claim 1, characterized in that: The fume hood body (1) has a perforated grid plate (11) on one side of the top and one side of the operating table (1.1) below, which is connected to the work space.

3. A fume hood with filtration function according to claim 1, characterized in that: A handle (9) is fixed to one side of the filter frame (4).

4. A fume hood with filtration function according to claim 1, characterized in that: The baffle (5) is fixed with a platform on the lower side and the bottom plate (6) on the upper side of the filter plate (7).

5. A fume hood with filtration function according to claim 1, characterized in that: The lengths of the base plate (6) and the baffle (5) are both less than the length of the filter frame (4).

6. A fume hood with filtration function according to claim 1, characterized in that: A filter plate (10) is fixed on the upper side of the workspace at the junction box (3).

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