A fume hood with adjustable top plate

Abstract

The utility model relates to the technical field of fume hoods, and specifically to a fume hood with an adjustable top plate, comprising a cabinet body, and also comprising: a top plate, which is arranged on the top of the cabinet body and can slide up and down relative to the cabinet body; a support frame, which is connected to the top plate; an up and down driving device, which is fixed to the top of the cabinet body, and the output end of the up and down driving device is connected to the support frame; a guide rail, which is arranged on the cabinet body; a slider, which is arranged on the top plate and / or the support frame, and is sleeved on the guide rail. The utility model can drive the support frame to move up and down through the up and down driving device, thereby driving the top plate to move up and down. When the top plate moves downward, the internal space of the cabinet body is reduced, so that the negative pressure increases, which is conducive to preventing the overflow of harmful gases, and the internal space is reduced, and the exhaust volume demand is reduced, so that energy consumption and noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to a fume hood with an adjustable top plate. Background Art

[0002] The size of the internal space of existing fume hoods is usually fixed. In order to meet the different needs of customers, the space inside the cabinet is usually designed to be larger. However, in actual use, most of the space is not fully utilized. When the space inside the cabinet is larger, the negative pressure is smaller, which is easy to cause internal harmful gas leakage. To avoid this problem, it is necessary to increase the exhaust volume, which leads to higher energy consumption. Therefore, it is necessary to design a fume hood that can change the size of the internal space of the fume hood to solve the above problems. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and proposes to design a fume hood with an adjustable top plate, which can reduce the internal space of the cabinet by adjusting the top plate up and down, thereby preventing harmful gas leakage and reducing energy consumption.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A fume hood with an adjustable top plate, comprising a hood body and:

[0006] A top plate, arranged on the top of the cabinet body, capable of sliding up and down relative to the cabinet body;

[0007] A supporting frame connected to the top plate;

[0008] The up and down driving device is fixed on the top of the cabinet, and the output end of the up and down driving device is connected to the supporting frame;

[0009] A guide rail is arranged on the cabinet;

[0010] The sliding block is arranged on the top plate and / or the supporting frame and sleeved on the guide rail.

[0011] The above technical solution can move the top plate downward to reduce the internal space of the cabinet, thereby increasing the negative pressure, preventing harmful gases from overflowing, reducing the exhaust volume, and reducing energy consumption and noise.

[0012] Furthermore, the up and down driving device is detachably connected to the support frame via the connecting ears, and the disassembly and assembly are convenient and quick.

[0013] Furthermore, the support frame is installed above or below the top plate.

[0014] Furthermore, an air outlet is arranged on the top plate, and the air outlet adopts a telescopic tube to ensure normal exhaust when the top plate moves up and down.

[0015] Furthermore, the support frame is detachably connected to the top plate, such as by bolts, pins, or snap-on connection.

[0016] Furthermore, the guide rails are arranged at the inner corners of the cabinet, and at least one group is provided.

[0017] Furthermore, the up and down driving device is located outside the cabinet, which is convenient for installation and can avoid being corroded by the gas in the cabinet.

[0018] Furthermore, the up and down driving device adopts driving equipment such as electric push rods, air cylinders, and oil cylinders.

[0019] Technical effects of the utility model:

[0020] Compared with the prior art, the utility model of a fume hood with an adjustable top plate can drive the support frame to move up and down through the up and down driving device, thereby driving the top plate to move up and down. When the top plate moves downward, the internal space of the cabinet is reduced, so that the negative pressure increases, which is conducive to preventing the overflow of harmful gases. The internal space is reduced, and the exhaust volume requirement is reduced, so that energy consumption and noise can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a fume hood with an adjustable top plate according to the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model fume hood with adjustable top plate (excluding the support frame and top plate);

[0023] Figure 3 For this utility model Figure 2 A-section structure enlarged view.

[0024] In the figure, 1. cabinet body; 2. top plate; 3. support frame; 4. upper and lower driving device; 5. guide rail; 6. slider; 7. connecting ear; 8. air outlet. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is clearly and completely described below in conjunction with the accompanying drawings of the specification.

[0026] Embodiment 1:

[0027] like Figure 1-3 As shown, the present embodiment involves a fume hood with an adjustable top plate, comprising a cabinet body 1, a top plate 2, a support frame 3, an up and down driving device 4, a guide rail 5 and a slide block 6.

[0028] The top plate 2 is arranged on the top of the cabinet 1, and sliders 6 are arranged at the four corners of the bottom surface of the top plate 2. The sliders 6 are sleeved on the guide rails 5 and can slide up and down along the guide rails 5, and the guide rails 5 are arranged on the cabinet 1. The top plate 2 is provided with air vents 8, and the air vents 8 adopt telescopic tubes to ensure normal exhaust during the up and down movement of the top plate 2.

[0029] The support frame 3 is detachably connected above the top plate 2 .

[0030] The up and down driving device 4 adopts an electric push rod, which is fixed on the cabinet 1 and located above the supporting frame 3. The output end of the up and down driving device 4 is detachably connected to the supporting frame 3 through a connecting ear 7, which is convenient for disassembly, assembly and maintenance.

[0031] Working principle: When the utility model is in use, the electric push rod is started, and the electric push rod pushes the supporting frame 3 and the top plate 2 downward, thereby reducing the internal space of the cabinet 1, so that the negative pressure increases, which is beneficial to prevent the overflow of harmful gases. The internal space is reduced, and the exhaust volume demand is reduced. Therefore, it can also reduce noise and energy consumption.

[0032] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.

Claims

1. A fume hood with an adjustable top plate, characterized in that: The invention comprises a cabinet (1), and further comprises: A top plate (2) is arranged on the top of the cabinet (1) and is capable of sliding up and down relative to the cabinet (1); A supporting frame (3) connected to the top plate (2); An up-and-down driving device (4) is fixed to the top of the cabinet (1), and an output end of the up-and-down driving device (4) is connected to the supporting frame (3); A guide rail (5) is arranged on the cabinet (1); The slider (6) is arranged on the top plate (2) and / or the supporting frame (3), and is sleeved on the guide rail (5).

2. The fume hood with adjustable top plate according to claim 1, characterized in that: The up and down driving device (4) is detachably connected to the supporting frame (3) via a connecting ear (7).

3. The fume hood with adjustable top plate according to claim 1, characterized in that: The support frame (3) is installed above or below the top plate (2).

4. The fume hood with adjustable top plate according to claim 1, characterized in that: An air outlet (8) is arranged on the top plate (2), and the air outlet (8) is a telescopic tube.

5. The fume hood with adjustable top plate according to claim 1, characterized in that: The support frame (3) is detachably connected to the top plate (2).

6. The fume hood with adjustable top plate according to claim 1, characterized in that: The guide rails (5) are arranged at the inner corners of the cabinet (1), and at least one group is provided.

7. The fume hood with adjustable top plate according to any one of claims 1 to 6, characterized in that: The up and down driving device (4) is located outside the cabinet (1).

8. The fume hood with adjustable top plate according to claim 7, characterized in that: The up and down driving device (4) adopts an electric push rod, a pneumatic cylinder or an oil cylinder.

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