A laboratory fume hood

Abstract

The utility model discloses a laboratory ventilation reagent cabinet relates to ventilation reagent cabinet technical field, including by the cabinet body, the cabinet door, the vertical baffle, the side concave baffle component of forming ventilation cabinet, vertical baffle divides cabinet body into storage bin, exhaust bin, the inside of side concave baffle is hollow structure, is equipped with with the air inlet of the communication of side concave baffle inner chamber on vertical baffle, the upper and lower end of side concave baffle all is equipped with the ventilation hole, and the passage for realizing vertical baffle and the air flow of storage bin is formed to the air inlet, side concave baffle inner chamber, ventilation hole. The utility model discloses through setting up vertical baffle, side concave baffle, through the structure that the upper and lower of side concave baffle all are equipped with ventilation hole, can realize the operation of upper and lower air suction, not only can realize the effect of high -efficient air flow, simultaneously, when the more reagent of side concave baffle is stored on, still can keep good air flow effect.

Description

Technical Field

[0001] This utility model relates to the field of ventilated reagent cabinet technology, specifically a laboratory ventilated reagent cabinet. Background Technology

[0002] A fume hood (also known as a ventilated reagent cabinet or laboratory fume hood) is a device specifically designed for the safe storage and handling of volatile, toxic, harmful, flammable, or odorous chemical reagents in laboratories. Its core function is to effectively exhaust or purify harmful gases, vapors, dust, or aerosols generated inside the cabinet through continuous ventilation, thereby protecting operators, the experimental environment, and the stored chemicals themselves. Its operating principle is roughly as follows:

[0003] The exhaust vents on the top or back of the cabinet are connected to the laboratory purification system through pipes. After the purification system fan is started, laboratory air is drawn in from the air inlet at the lower front of the cabinet, forming an inward airflow "barrier" (face velocity) to prevent pollutants inside the cabinet from escaping. At the same time, the polluted air is guided upward or backward and discharged through the exhaust vents and pipes.

[0004] Existing ventilated reagent cabinets use multiple layers of breathable grilles to classify and store reagents while allowing airflow. However, in actual use, when a large number of reagents are placed on the grilles, they can block the air vents over a large area, making airflow difficult. Therefore, this paper proposes a laboratory ventilated reagent cabinet. Utility Model Content

[0005] The purpose of this utility model is to provide a laboratory ventilated reagent cabinet in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a laboratory ventilated reagent cabinet, comprising a ventilated cabinet assembly consisting of a cabinet body and a cabinet door. The cabinet door is hinged to the front end of the cabinet body. Vertically distributed vertical partitions are welded and fixed inside the cabinet body, dividing the interior of the cabinet body into a storage compartment and an exhaust compartment. Multiple concave-shaped partitions are fixed to the inner side of the exhaust compartment, which are evenly distributed vertically. The rear end of the concave-shaped partitions is connected and fixed to the vertical partitions, and the interior of the concave-shaped partitions has a cavity structure. An air intake port communicating with the cavity of the concave-shaped partitions is provided on the vertical partitions.

[0007] Ventilation holes are provided at both the upper and lower ends of the concave partition. The air circulation between the vertical partition and the storage compartment is achieved through the air intake, the inner cavity of the concave partition, and the ventilation holes.

[0008] As a further improvement of this utility model: a bottom partition is fixed inside the storage compartment, which is used to separate the filter compartment. A grid front baffle is installed on the inner side of the front end of the inner wall of the filter compartment by a bolt structure, and a ventilation hole is opened on the top of the bottom partition to realize the air circulation between the storage compartment and the external environment.

[0009] As a further improvement of this utility model: multiple horizontally evenly distributed support plates are fixed to the bottom of the inner wall of the filter chamber, and a filter screen is installed on the top of the support plate. The filter screen is used to filter the air entering the storage chamber.

[0010] As a further improvement of this utility model: the longitudinal length of the concave partition is less than the longitudinal depth of the storage compartment, and the front end of the concave partition does not contact the cabinet door.

[0011] As a further improvement of this utility model: the top of the cabinet is fixed with an exhaust port extending into the exhaust chamber, and the top of the vertical partition is provided with a grille hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By setting up vertical partitions and concave side partitions, and with ventilation holes at both the top and bottom of the concave side partitions, vertical air intake can be achieved. This not only enables efficient airflow, but also maintains good airflow even when a large number of reagents are stored on the concave side partitions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a split diagram of the grille front baffle and filter screen of this utility model.

[0018] In the diagram: 1. Fume hood assembly; 101. Cabinet body; 102. Cabinet door; 103. Vertical partition; 104. Storage compartment; 105. Exhaust compartment; 106. Side concave partition; 107. Bottom partition; 108. Filter compartment; 109. Air intake; 110. Ventilation hole; 111. Grille hole; 2. Exhaust outlet; 3. Grille front baffle; 4. Support plate; 5. Filter screen. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 In this embodiment of the present invention, a laboratory ventilated reagent cabinet includes a ventilated cabinet assembly 1 consisting of a cabinet body 101 and a cabinet door 102. The cabinet door 102 is installed at the front end of the cabinet body 101 by a hinge. Vertically distributed vertical partitions 103 are welded and fixed inside the cabinet body 101. The vertical partitions 103 divide the interior of the cabinet body 101 into a storage compartment 104 and an exhaust compartment 105. Multiple concave side partitions 106 are fixed on the inner side of the exhaust compartment 105. The rear end of the concave side partitions 106 is connected and fixed to the vertical partitions 103. The interior of the concave side partitions 106 has a cavity structure. An air intake 109 communicating with the cavity of the concave side partitions 106 is provided on the vertical partitions 103.

[0021] Ventilation holes 110 are provided at both the upper and lower ends of the concave partition 106. The air circulation between the vertical partition 103 and the storage compartment 104 is achieved through the channel formed by the air intake 109, the inner cavity of the concave partition 106, and the ventilation holes 110.

[0022] The bottom of the storage compartment 104 is also fixed with a bottom partition 107. The bottom partition 107 is used to separate the filter compartment 108. The inner side of the front end of the inner wall of the filter compartment 108 is equipped with a grid front baffle 3 by bolt structure. The top of the bottom partition 107 is provided with a ventilation hole 110 to enable air circulation between the storage compartment 104 and the external environment.

[0023] The top of the cabinet 101 is fixed with an exhaust port 2 extending into the exhaust chamber 105, and the top of the vertical partition 103 is provided with a grille hole 111.

[0024] In this embodiment, it should be noted that: when this fume hood assembly 1 is in use, the exhaust port 2 is connected to the laboratory purification system through a pipe, and a sealing element is provided at the contact position between the cabinet door 102 and the cabinet body 101 to ensure a good seal between the cabinet door 102 and the cabinet body 101 when the cabinet door 102 is closed. The operating principle of this fume hood assembly 1 is as follows:

[0025] After the fan of the laboratory purification system is started, it draws air into the exhaust chamber 105 through the exhaust port 2. This suction force is transmitted to the storage chamber 104 through the channel formed by the air intake 109, the side concave partition 106, and the ventilation hole 110, causing the air in the storage chamber 104 to flow into the exhaust chamber 105 and finally be drawn away by the fan, thus realizing the operation of exhausting polluted air in the cabinet 101.

[0026] At the same time, air in the laboratory environment enters the storage compartment 104 through the grille opening on the grille front baffle 3, the filter compartment 108, and the ventilation hole 110 on the bottom partition 107. In this way, the effect of preventing pollutants from escaping from the cabinet 101 can be achieved.

[0027] With ventilation holes 110 provided at both the top and bottom of the concave partition 106, air can be drawn from both the top and bottom (it should be noted that the top space of the highest concave partition 106 can be drawn from the top through the grid holes 111). This not only achieves efficient airflow, but also maintains good airflow even when a lot of reagents are stored on the concave partition 106.

[0028] Please refer to this carefully. Figure 2 , Figure 4 The bottom of the inner wall of the filter chamber 108 is fixed with multiple horizontally evenly distributed support plates 4, and a filter screen 5 is installed on the top of the support plate 4. The filter screen 5 is used to filter the air entering the storage chamber 104.

[0029] In this embodiment: the filter screen 5 can filter out impurities that may be present in the air, thereby maintaining a good storage environment inside the cabinet 101;

[0030] It should also be noted that the detachable bolt structure between the front baffle 3 of the grille and the cabinet 101 is a conventional connection structure, so it will not be described in detail. The detachable structure of the front baffle 3 of the grille facilitates the replacement of the filter screen 5.

[0031] Please refer to this carefully. Figures 1-2 The longitudinal length of the concave partition 106 is less than the longitudinal depth of the storage compartment 104, and the front end of the concave partition 106 does not contact the cabinet door 102.

[0032] In this embodiment: when the ventilation hole 110 at the top of a concave partition 106 is blocked by a large number of reagent bottles, the air below the concave partition 106 can flow upward through the channel between the concave partition 106 and the cabinet door 102, thereby ensuring smooth airflow inside the storage compartment 104.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A laboratory fume hood, comprising a fume hood assembly (1) consisting of a cabinet body (101) and a cabinet door (102), wherein the cabinet door (102) is hinged to the front end of the cabinet body (101), characterized in that, The cabinet (101) is welded and fixed with vertically distributed vertical partitions (103) inside. The vertical partitions (103) divide the interior of the cabinet (101) into storage compartments (104) and exhaust compartments (105). Multiple concave side partitions (106) are fixed on the inner side of the exhaust compartment (105) and are evenly distributed vertically. The rear end of the concave side partitions (106) is connected and fixed to the vertical partitions (103), and the interior of the concave side partitions (106) has a cavity structure. The vertical partitions (103) are provided with air intakes (109) that communicate with the cavity of the concave side partitions (106). Ventilation holes (110) are provided at both the upper and lower ends of the concave partition (106). The air circulation between the vertical partition (103) and the storage compartment (104) is achieved through the channel formed by the air intake (109), the inner cavity of the concave partition (106), and the ventilation holes (110).

2. The laboratory ventilated reagent cabinet according to claim 1, characterized in that, The storage compartment (104) is also fixed with a bottom partition (107) at the bottom. The bottom partition (107) is used to separate the filter compartment (108). The inner wall of the filter compartment (108) is fitted with a grid front baffle (3) by bolts. The bottom partition (107) has ventilation holes (110) at the top to allow air circulation between the storage compartment (104) and the external environment.

3. A laboratory ventilated reagent cabinet according to claim 2, characterized in that, The bottom of the inner wall of the filter chamber (108) is fixed with a plurality of horizontally evenly distributed support plates (4), and a filter screen (5) is installed on the top of the support plate (4). The filter screen (5) is used to filter the air entering the storage chamber (104).

4. A laboratory ventilated reagent cabinet according to claim 1, characterized in that, The longitudinal length of the concave partition (106) is less than the longitudinal depth of the storage compartment (104), and the front end of the concave partition (106) does not contact the cabinet door (102).

5. A laboratory ventilated reagent cabinet according to claim 1, characterized in that, The top of the cabinet (101) is fixed with an exhaust port (2) extending into the exhaust chamber (105), and the top of the vertical partition (103) is provided with a grille hole (111).

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