Closable ventilation cabinet

Abstract

The utility model relates to the technical field of laboratory fume cupboards, in particular to a closable fume cupboard which comprises a cupboard body. The device further comprises a temporary storage bin, a sealing plate, a sliding door and gloves. The number of the temporary storage bins is two, and the two temporary storage bins are arranged on the two sides of the cabinet body in the length direction of the cabinet body. The two sliding doors are arranged on the cabinet body in a sliding mode in the length direction of the cabinet body, and the two sliding doors move in the opposite directions; the gloves are arranged on the sliding doors, and driving grooves are formed in the side walls of the two sides of the cabinet body in the width direction of the cabinet body. The closing plate is arranged in the driving groove in a sliding mode, when the two sliding doors are closed, the closing plate extends out of the driving groove and makes contact with the sliding doors, and the closing plate, the sliding doors and the cabinet body jointly form an experiment cavity used for experiments. The glove can adapt to toxic tests and non-toxic tests, and the service life of the glove is prolonged.

Description

Technical Field

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

[0002] In existing fume hoods, most fume hoods are not completely closed. However, during experiments, some experiments will produce toxic and harmful gases. Since most fume hoods are not completely closed, baffles are installed on the fume hoods to prevent the toxic gases from escaping. During operation, the experimenters reduce the distance between the baffle and the experimental table, but this can still cause the toxic gases to overflow.

[0003] Chinese Patent Publication No. CN220195882U discloses a fully enclosed fume hood structure, comprising: a rear assembly for ventilation and transfer of items; a lower front assembly located on the front side of the rear assembly, including a base; a middle front assembly located on the base, including a pair of parallel and staggered first movable plates and a pair of parallel and staggered second movable plates, a liftable circular portion is fitted between the first and second movable plates, third movable plates are respectively provided on the upper and lower outer periphery of the circular portion, an outer ring is fitted at the outer end of the circular portion, and a glove is fixed on the inner periphery of the outer ring; and an upper front assembly located on the middle front assembly, including a top seat that matches the base.

[0004] The aforementioned document establishes a fully enclosed structure for the fume hood. However, gloves are required during use regardless of whether the experiment produces toxic gases, leading to an increased number of glove uses and a reduced lifespan. Additionally, multiple movable panels are installed for ease of operation, which can create gaps between adjacent panels, allowing toxic gases to easily leak out. Utility Model Content

[0005] To address the aforementioned issues, a closable fume hood is provided. By setting temporary storage compartments on both sides of the hood, the sliding doors can be moved to these compartments when non-toxic experiments are required, thus eliminating the need for gloves to be used during testing and reducing glove usage frequency. When toxic experiments are required, the sliding doors slide out from the temporary storage compartments and move to one side of the experimental chamber. After both sliding doors close, a sealing plate extends from the drive groove, ensuring the sealing of the experimental chamber. The sealing plate's sliding position within the drive groove ensures that the sealing plate does not obstruct the gloves as they move with the sliding doors, avoiding the need to repeatedly flip the gloves after toxic experiments. Repeatedly flipping gloves attached to the sliding doors can easily damage the connection between the gloves and the sliding doors. Furthermore, the gloves are only used during toxic experiments, extending their lifespan.

[0006] To address the problems in the existing technology, this utility model provides a closable fume hood, including a cabinet body;

[0007] It also includes temporary storage compartments, enclosures, sliding doors, and gloves;

[0008] There are two temporary storage compartments, which are located on both sides of the cabinet along the length of the cabinet.

[0009] The sliding doors are installed on the cabinet along the length of the cabinet body. There are two sliding doors, which can move towards each other or in opposite directions.

[0010] The gloves are installed on the sliding door, and drive grooves are provided on the side walls of both sides of the cabinet along the width of the cabinet.

[0011] The sealing plate is slidably installed in the drive groove. When the two sliding doors are closed, the sealing plate extends out from the drive groove and contacts the sliding doors. The sealing plate, the sliding doors, and the cabinet together form an experimental chamber for experiments.

[0012] Preferably, a nozzle capable of spraying cleaning fluid is installed in the temporary storage compartment.

[0013] Preferably, a drain hole is provided at the bottom of the temporary storage compartment to drain the cleaning solution.

[0014] Preferably, the sliding door is provided with a glove-installation opening, and a protective frame is fixedly installed on one side of the temporary storage compartment. When the sliding door is located in the temporary storage compartment, the protective frame will block the opening.

[0015] Preferably, an air pump is installed on the protective frame, and when the sliding door is in the temporary storage compartment, the air pump blows air onto the gloves through the opening.

[0016] Preferably, the protective frame and the sliding door are fitted with a clearance.

[0017] Preferably, a slide is vertically fixed inside the temporary storage compartment, and a lifting plate that moves vertically is provided on the slide.

[0018] Preferably, a dryer is installed above the temporary storage compartment.

[0019] Preferably, a retaining ring is fixedly provided at the tail of the glove, and the retaining ring can be fixedly provided at the through-hole.

[0020] Preferably, the outside of the gloves is coated with an anti-corrosion material.

[0021] The advantages of this utility model compared to the prior art are:

[0022] 1. This utility model features temporary storage compartments on both sides of the cabinet. When non-toxic experiments are required, the sliding door is moved to the temporary storage compartment, eliminating the need for gloves on the sliding door during testing and reducing glove usage frequency. When toxic experiments are required, the sliding door slides out from the temporary storage compartment and moves to one side of the experimental chamber. After both sliding doors close, a sealing plate extends from the drive groove, ensuring the sealing of the experimental chamber. The sealing plate, slidably positioned within the drive groove, prevents obstruction of the gloves as they move with the sliding doors, avoiding the need to repeatedly flip the gloves after toxic experiments. Repeated flipping of gloves attached to the sliding door can easily damage the connection between the gloves and the door. Furthermore, the gloves are only used during toxic experiments, extending their lifespan. In summary, this fume hood is suitable for both toxic and non-toxic experiments while extending the lifespan of gloves.

[0023] 2. By setting up a nozzle, the nozzle sprays cleaning fluid to clean the gloves. At the same time, a protective frame, air pump and lifting plate are set up. First, the air pump blows the gloves to fill them, and then the lifting plate lifts them. During this process, the nozzle continuously sprays cleaning fluid, reducing the blind spots of the cleaning fluid when cleaning the gloves. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the sliding door of a closable fume hood of this utility model when it is in the closed state.

[0025] Figure 2 This utility model relates to a closable fume hood. Figure 1 A magnified view of a portion of point A in the middle.

[0026] Figure 3 This is a three-dimensional schematic diagram of the sliding door of a closable fume hood of this utility model when it is in the open state.

[0027] Figure 4 This is a cross-sectional perspective view of a closable fume hood according to this utility model. Figure 1 .

[0028] Figure 5 This utility model relates to a closable fume hood. Figure 4 A magnified view of a portion of point B in the middle.

[0029] Figure 6 This is a cross-sectional perspective view of a closable fume hood according to this utility model. Figure 2 .

[0030] Figure 7 This utility model relates to a closable fume hood. Figure 6 A magnified view of a portion of point C.

[0031] The numbers on the map are:

[0032] 1. Cabinet; 11. Enclosure panel; 12. Sliding door; 121. Through opening; 13. Glove; 131. Fixing ring; 14. Drive slot; 2. Temporary storage compartment; 21. Nozzle; 22. Drain hole; 23. Protective frame; 24. Air pump; 25. Slide table; 26. Lifting plate; 27. Dryer. Detailed Implementation

[0033] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0034] Reference Figure 1 , Figure 3 , Figure 4 and Figure 7 A closable fume hood, comprising a cabinet body 1;

[0035] It also includes temporary storage compartment 2, enclosure panel 11, sliding door 12 and gloves 13;

[0036] There are two temporary storage compartments 2, which are respectively located on both sides of the cabinet 1 along the length of the cabinet 1;

[0037] The sliding door 12 is slidably mounted on the cabinet 1 along the length of the cabinet 1. There are two sliding doors 12, which can move towards or away from each other.

[0038] The gloves 13 are installed on the sliding door 12, and drive grooves 14 are provided on the side walls on both sides of the cabinet 1 along the width direction of the cabinet 1.

[0039] The sealing plate 11 is slidably disposed in the drive groove 14. When the two sliding doors 12 are closed, the sealing plate 11 extends out from the drive groove 14 and contacts the sliding doors 12. The sealing plate 11, the sliding doors 12 and the cabinet 1 together form an experimental chamber for experiments.

[0040] Traditional fume hoods are mostly open-ended. During experiments, one side of the fume hood has an opening, which is a rectangular strip structure, allowing researchers to easily insert their hands into the hood. However, some experiments produce toxic gases, which can easily leak out of the opening. Therefore, existing technologies have designed fully enclosed fume hoods specifically for toxic gases. However, fully enclosed fume hoods are specific to certain applications. In the same laboratory, both fully enclosed and conventional fume hoods need to be placed to accommodate different experiments. If only fully enclosed fume hoods are placed in the laboratory to save costs or due to space constraints, then they must be used for every experiment. Fully enclosed fume hoods are equipped with gloves (13), which must be used for each experiment. After a period of use, the gloves (13) will break due to repeated pulling, leading to leaks in the fully enclosed fume hood. Furthermore, fully enclosed fume hoods are difficult to maintain.

[0041] To avoid the aforementioned situations, the existing fume hood structure was redesigned and optimized to create a closable structure. When toxic gases are generated during the experiment, the fume hood is used in a closed configuration; when no toxic gases are generated, the fume hood is used in an open configuration. This allows for control of the fume hood's sealing as needed. When the fume hood is open, the experimenter does not need to wear gloves 13, avoiding wear and tear on the gloves during use. The specific structure and operation of this fume hood are as follows:

[0042] During the experiment, it was divided into toxic and non-toxic experiments based on whether toxic gases were produced. In the non-toxic experiment, the two sliding doors 12 were located in the temporary storage chamber 2, and the cabinet 1 was open. The gloves 13 mounted on the sliding doors 12 were located inside the temporary storage chamber 2. During the experiment, the experimenter did not need to operate the gloves 13 on the sliding doors 12. Only in the toxic experiment was it necessary to close the two sliding doors 12 and operate them using the gloves 13. Because the cabinet 1 has a sealing plate 11, when a toxic experiment was required, the sliding doors 12 needed to move from the temporary storage chamber 2 to the experimental chamber side of the cabinet 1. It is worth noting that at this time, the sealing plate 11 was completely retracted into the drive groove 14. When the sliding door 12 moved the gloves 13 past the sealing plate 11... When the two sliding doors 12 are closed, the sealing plate 11 does not obstruct the gloves 13. After the two sliding doors 12 are closed, the sealing plate 11 extends from the drive groove 14 and contacts the side wall of the sliding door 12. At this time, the experimental chamber is completely closed. The experimenter conducts the experiment using the gloves 13 mounted on the sliding doors 12. When it is necessary to switch from a toxic experiment to a non-toxic experiment, the two sliding doors 12 move towards the two temporary storage compartments 2 respectively. Before the sliding doors 12 move, the sealing plate 11 slides into the drive groove 14, disengaging from the sliding doors 12. Therefore, the gloves 13 mounted on the sliding doors 12 do not need to be flipped out beforehand; the gloves 13 remain on the side of the sliding doors 12 facing the cabinet 1. When the two sliding doors 12 move to the temporary storage compartments 2 respectively, the two sliding doors 12 stop moving, and simultaneously, the sealing plate 11 in the drive groove 14 extends and contacts the sliding doors 12. This allows the fume hood to accommodate both toxic and non-toxic experiments.

[0043] By setting temporary storage compartments 2 on both sides of the cabinet 1, the sliding door 12 can be moved to the temporary storage compartment 2 when a non-toxic experiment is required. Therefore, the experimenters will not use the gloves 13 on the sliding door 12 during the experiment, reducing the frequency of use of the gloves 13. When a toxic experiment is required, the sliding door 12 slides out from the temporary storage compartment 2 and moves to one side of the experimental chamber. When the two sliding doors 12 are closed, the sealing plate 11 extends from the drive groove 14, thereby ensuring the sealing of the experimental chamber. The sealing plate 11 is slidably set in the drive groove 14, ensuring that the sealing plate 11 will not obstruct the gloves 13 when the gloves 13 move with the sliding door 12. This avoids the situation where the gloves 13 need to be turned out after the toxic experiment. Repeatedly turning out the gloves 13 on the sliding door 12 can easily cause damage to the connection between the gloves 13 and the sliding door 12. At the same time, the gloves 13 are only used during toxic experiments, which extends the service life of the gloves 13. In summary, this fume hood is suitable for both toxic and non-toxic experiments, while also extending the service life of gloves 13.

[0044] Reference Figure 4The temporary storage compartment 2 is equipped with a nozzle 21 that can spray cleaning fluid.

[0045] When the glove 13 is in the temporary storage compartment 2, the nozzle 21 sprays out cleaning fluid to clean the glove 13, and at this time the sealing plate 11 slides out from the drive groove 14 and comes into contact with the sliding door 12.

[0046] Reference Figure 2 A drain hole 22 is provided at the bottom of the temporary storage compartment 2 to drain the cleaning liquid.

[0047] The cleaning solution after washing gloves 13 is discharged through drain hole 22.

[0048] Reference Figure 2 and Figure 5 A through-hole 121 for installing gloves 13 is provided on the sliding door 12. A protective frame 23 is fixedly installed on one side of the temporary storage compartment 2. When the sliding door 12 is located in the temporary storage compartment 2, the protective frame 23 will block the through-hole 121.

[0049] When the glove 13 is in the temporary storage compartment 2, the glove 13 is not in use. However, in order to prevent external objects from accidentally colliding with the through-hole 121 during use, which could cause the glove 13 to be damaged, the protective frame 23 is installed to avoid the above situation.

[0050] Reference Figure 6 An air pump 24 is installed on the protective frame 23. When the sliding door 12 is located in the temporary storage compartment 2, the air pump 24 blows air onto the glove 13 through the through-hole 121.

[0051] Since the glove 13 is in a drooping state when not in use, the blind spot of the drooping glove 13 is large, and the cleaning liquid sprayed by the nozzle 21 is difficult to clean the glove 13. However, after the air pump 24 blows air, the glove 13 is in a full state, which reduces the cleaning blind spot.

[0052] Reference Figures 1-7 The protective frame 23 and the sliding door 12 are fitted with a clearance.

[0053] When the sliding door 12 slides, the sliding door 12 and the protective frame 23 slide together, and the protective frame 23 and the sliding door are fitted with a gap, which avoids wear between the protective frame 23 and the sliding door due to sliding. At the same time, it avoids the situation where the glove 13 is overfilled when the air pump 24 blows air on it, and avoids the situation where the glove 13 is blown apart by the air pump 24.

[0054] Reference Figure 2 and Figure 7 A slide 25 is vertically fixed inside the temporary storage compartment 2, and a lifting plate 26 that moves vertically is provided on the slide 25.

[0055] After the air pump 24 inflates the glove 13, the slide table 25 drives the lifting plate 26 to lift it, so that the inflated glove 13 is flipped upward by the lifting plate 26, thereby allowing the cleaning fluid to thoroughly clean the glove 13.

[0056] Reference Figure 6 A dryer 27 is installed on the upper part of the temporary storage compartment 2.

[0057] After the gloves 13 are cleaned with cleaning solution, the dryer 27 dries the gloves 13 to prevent the outside of the gloves 13 from being in a damp state for a long time, thereby preventing mold from growing on the outside of the gloves 13.

[0058] Reference Figure 5 A fixing ring 131 is fixedly provided at the tail of the glove 13, and the fixing ring 131 can be fixedly provided on the through hole 121.

[0059] When the glove 13 is damaged, remove the retaining ring 131 along with the damaged glove 13, and replace it with a new glove 13 and its matching retaining ring 131. During installation, the retaining ring 131 can be fixed to the sliding door 12 with screws.

[0060] Reference Figures 1-7 The outside of glove 13 is coated with an anti-corrosion material.

[0061] Working Principle: During the experiment, it is divided into toxic and non-toxic experiments based on whether toxic gases are produced. In the non-toxic experiment, the two sliding doors 12 are located in the temporary storage chamber 2, and the cabinet 1 is open. The gloves 13 mounted on the sliding doors 12 are located inside the temporary storage chamber 2. During the experiment, the experimenter does not need to operate the gloves 13 on the sliding doors 12. Only in the toxic experiment is it necessary to close the two sliding doors 12 and operate them using the gloves 13. Because the cabinet 1 has a sealing plate 11, when a toxic experiment is required, the sliding doors 12 need to move from the temporary storage chamber 2 to the experimental chamber side of the cabinet 1. It is worth noting that at this time, the sealing plate 11 is completely retracted into the drive groove 14. When the sliding door 12 moves the gloves 13 past the sealing plate 11... When the two sliding doors 12 are closed, the sealing plate 11 does not obstruct the glove 13. When the two sliding doors 12 are closed, the sealing plate 11 extends from the drive groove 14 and contacts the side wall of the sliding door 12. At this time, the experimental chamber is completely closed. The experimenter conducts the experiment using the glove 13 set on the sliding door 12. When it is necessary to switch from a toxic experiment to a non-toxic experiment, the two sliding doors 12 move towards the two temporary storage compartments 2 respectively. Before the sliding doors 12 move, the sealing plate 11 slides into the drive groove 14, and the sealing plate 11 disengages from the sliding door 12. Therefore, the glove 13 set on the sliding door 12 does not need to be flipped out in advance. The glove 13 is always located on the side of the sliding door 12 facing the cabinet 1. When the two sliding doors 12 move to the temporary storage compartments 2 respectively, the two sliding doors 12 stop moving. At the same time, the sealing plate 11 in the drive groove 14 extends and contacts the sliding door 12. This allows the fume hood to be suitable for both toxic and non-toxic experiments.

[0062] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A closable fume hood, comprising a cabinet body (1); Its features are, It also includes a temporary storage compartment (2), a sealing panel (11), a sliding door (12), and gloves (13); There are two temporary storage compartments (2), which are respectively located on both sides of the cabinet (1) along the length of the cabinet (1); The sliding door (12) is slidably installed on the cabinet (1) along the length of the cabinet (1). There are two sliding doors (12), and the two sliding doors (12) move towards each other or in opposite directions. The gloves (13) are set on the sliding door (12), and drive grooves (14) are provided on the side walls on both sides of the cabinet (1) along the width direction of the cabinet (1); The sealing plate (11) is slidably set in the drive groove (14). When the two sliding doors (12) are closed, the sealing plate (11) extends out from the drive groove (14) and contacts the sliding door (12). The sealing plate (11), the sliding door (12) and the cabinet (1) together form an experimental cavity for the experiment.

2. The closable fume hood according to claim 1, characterized in that, A nozzle (21) capable of spraying cleaning fluid is installed inside the temporary storage compartment (2).

3. A closable fume hood according to claim 2, characterized in that, A drain hole (22) is provided at the bottom of the temporary storage compartment (2) to drain the cleaning liquid.

4. A closable fume hood according to claim 2, characterized in that, A through-hole (121) for installing gloves (13) is provided on the sliding door (12). A protective frame (23) is fixedly installed on one side of the temporary storage compartment (2). When the sliding door (12) is located in the temporary storage compartment (2), the protective frame (23) will block the through-hole (121).

5. A closable fume hood according to claim 4, characterized in that, An air pump (24) is installed on the protective frame (23). When the sliding door (12) is located in the temporary storage compartment (2), the air pump (24) blows air onto the glove (13) through the through-hole (121).

6. A closable fume hood according to claim 5, characterized in that, The protective frame (23) and the sliding door (12) are fitted with a clearance.

7. A closable fume hood according to claim 5, characterized in that, A slide (25) is vertically fixed inside the temporary storage compartment (2), and a lifting plate (26) that moves vertically is provided on the slide (25).

8. A closable fume hood according to claim 2, characterized in that, A dryer (27) is installed on the upper part of the temporary storage bin (2).

9. A closable fume hood according to claim 4, characterized in that, A fixing ring (131) is fixedly provided at the tail of the glove (13), and the fixing ring (131) can be fixedly provided on the through hole (121).

10. A closable fume hood according to claim 1, characterized in that, The outside of the gloves (13) is coated with an anti-corrosion material.

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