Walking-in type ventilation cabinet

Abstract

The utility model relates to the technical field of ventilation cabinets, and particularly discloses a walking-in type ventilation cabinet which comprises a cabinet body, an air blower and a gas collecting hood, the air blower is arranged on the cabinet body, the gas collecting hood is connected with an air inlet of the air blower, the gas collecting hood is located in the cabinet body, and an adsorption plate is movably arranged on the side, away from the air blower, of the gas collecting hood; a fixing assembly is arranged between the gas collecting hood and the adsorption plate and is used for fixing the adsorption plate on the gas collecting hood. The method has the effect of improving the maintenance efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of fume hoods, and in particular to a walk-in fume hood. Background Art

[0002] In order to prevent the staff in the laboratory from inhaling or swallowing some toxic, pathogenic or unknown toxic chemicals and organisms, the laboratory should have good ventilation, so fume hoods are usually installed in the laboratory. The fume hood is equipped with a blower and a gas hood, and the opening of the gas hood is located inside the fume hood. During the experiment, the experimental instruments are moved into the fume hood, and then the experiment is carried out in the fume hood. The toxic and harmful gases generated during the experiment can be extracted through the blower and the gas hood, thereby ensuring the working environment in the laboratory.

[0003] In order to reduce the emission of harmful gases, an adsorption plate is usually fixed on the open side of the gas hood. The adsorption plate can adsorb harmful gases, thereby reducing pollution to the environment. After the fume hood has been working for a long time, a large amount of harmful substances will adhere to the adsorption plate, causing the mesh holes on the adsorption plate to be blocked, thereby weakening the adsorption effect of the adsorption plate. In the prior art, it is generally necessary to remove the gas hood and then replace and maintain the adsorption plate. The maintenance efficiency of this process is low and the replacement cost is high. Utility Model Content

[0004] In order to reduce replacement costs, the present application provides a walk-in fume hood.

[0005] The walk-in fume hood provided in this application adopts the following technical solution:

[0006] A walk-in fume hood comprises a cabinet body, a blower and an air collecting hood, wherein the blower is arranged on the cabinet body, the air collecting hood is connected to an air inlet of the blower, the air collecting hood is located in the cabinet body, an adsorption plate is movably arranged on the air inlet side of the air collecting hood, the adsorption plate can be moved toward a side away from the air collecting hood, a fixing component is arranged between the air collecting hood and the adsorption plate, and the fixing component is used to fix the adsorption plate on the air collecting hood.

[0007] By adopting the above technical solution, the adsorption plate is movably arranged on the gas collecting hood. Therefore, after the fume hood has been working for a long time, the fixation between the gas collecting hood and the adsorption plate is released by the fixing assembly, and then the adsorption plate is removed in the direction away from the air inlet side of the gas collecting hood. At this time, there is no need to remove the gas collecting hood to complete the replacement of the adsorption plate. The new adsorption plate can be installed and the gas collecting hood can continue to be used, which improves the maintenance efficiency and reduces the replacement cost while ensuring the adsorption effect of harmful gases.

[0008] Optionally, the fixing assembly includes a connecting block, an insertion rod and an elastic member, the connecting block is arranged on the adsorption plate, a socket is opened on the connecting block, the insertion rod is slidably arranged on the gas collecting hood, the elastic member is connected between the insertion rod and the gas collecting hood, and when the adsorption plate and the gas collecting hood are in contact with each other, the insertion rod is inserted into the socket.

[0009] By adopting the above technical solution, after the adsorption plate is slid to a state where it fits with the gas collecting hood, the insertion rod is slid into the insertion hole to limit the movement of the adsorption plate and fix the adsorption plate; when the adsorption plate needs to be removed, the insertion rod is pulled out and then the adsorption plate is slid out, so the process of fixing and removing the adsorption plate is relatively simple and more convenient to use.

[0010] Optionally, a through hole is provided on the air collecting hood, and the connecting block is slidably arranged in the through hole.

[0011] By adopting the above technical solution, after the adsorption plate is fixed, the connecting block is located in the through hole. Therefore, the setting of the through hole enables the connecting block to slide only along the depth direction of the through hole, and the sliding along the depth direction of the through hole is limited by the insertion rod. Therefore, the setting of the through hole helps to improve the stability of the adsorption plate after it is fixed.

[0012] Optionally, the adsorption plate includes a working plate and a mounting ring, the working plate is provided with a positioning block, the mounting ring is provided with a positioning groove for inserting the positioning block, and the connecting block is arranged on the mounting ring.

[0013] By adopting the above technical solution, the working plate and the mounting ring can be detachably connected, so when replacing, the mounting ring can also be retained, and only the working plate needs to be replaced, which further reduces the replacement cost.

[0014] Optionally, the fixing components are provided in multiple groups and are ring-arranged around the circumference of the air collecting hood. A connecting rope is movably provided on the air collecting hood. The connecting rope includes a first rope body and a second rope body provided at one end of the first rope body. A plurality of second rope bodies are provided, and the number of the second rope bodies is the same as the number of the fixing components. Each of the second rope bodies corresponds to an insertion rod, and one end of the second rope body away from the first rope body is connected to the corresponding insertion rod.

[0015] By adopting the above technical solution, multiple groups of fixing components are provided, thereby being able to enhance the fixing effect of the adsorption plate; when the first rope body is pulled, the first rope body can drive multiple second rope bodies to move, and the second rope body drives the corresponding insertion rods to slide, so that the multiple insertion rods can slide synchronously, making the installation and disassembly process of the adsorption plate more convenient.

[0016] Optionally, the fixing component includes a first magnetic component and a second magnetic component, the first magnetic component is arranged on the air collecting cover, the second magnetic component is arranged on the adsorption plate, and the second magnetic component is used to be attracted to the first magnetic component.

[0017] By adopting the above technical solution, after the adsorption plate is attached to the air collecting hood, the first magnetic part and the second magnetic part are attracted together to fix the adsorption plate; when disassembling, the adsorption plate only needs to be pulled out, so the installation and disassembly process of the adsorption plate is simple.

[0018] Optionally, a sliding door is provided at the open end of the cabinet, and the sliding door includes a first door body arranged on the cabinet, a second door body slidably arranged on the first door body, and a third door body slidably arranged on the second door body, and the sliding directions of the second door body and the third door body are both arranged along the height direction of the cabinet.

[0019] By adopting the above technical solution, the sliding door is in a closed state during the experiment, thereby being able to block the harmful gases generated during the experiment and prevent the harmful gases from overflowing into the laboratory; after the experiment, the second door body and the third door body are slid upwards to open the cabinet, making it easier to take out the experimental instruments in the cabinet.

[0020] Optionally, a compact board is provided on the inner wall of the cabinet.

[0021] By adopting the above technical solution, the anti-folding board is resistant to acid and alkali, organic solvents and high temperatures, so it can protect the inner wall of the cabinet, thereby extending the service life of the cabinet.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The adsorption plate is movably arranged on the gas collecting hood. Therefore, when a large amount of harmful substances are accumulated on the adsorption plate, the adsorption plate can be removed and replaced, and the gas collecting hood can continue to be used. There is no need to remove the gas collecting hood during the replacement process. Therefore, the replacement process of the adsorption plate is simpler and helps to reduce the replacement cost.

[0024] 2. The adsorption plate can be fixed and removed by sliding the plug rod, so the installation and removal process of the adsorption plate is simple.

[0025] 3. By pulling the connecting rope, multiple insertion rods can slide synchronously, which helps to further simplify the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0027] Figure 2 This is a schematic diagram of the structure of Example 1 of the present application without the sliding door;

[0028] Figure 3 It is a schematic diagram of the structure of the gas collecting hood in Example 1 of the present application;

[0029] Figure 4 is a schematic diagram of an explosion at the gas collecting hood in Example 1 of the present application;

[0030] Figure 5 is a cross-sectional view of the gas collecting hood in Example 1 of the present application;

[0031] Figure 6 It is a schematic diagram of the explosion at the gas collecting hood in Example 2 of the present application.

[0032] Figure numerals: 1. cabinet; 2. blower; 3. air collecting hood; 31. perforation; 4. adsorption plate; 41. working plate; 411. positioning block; 42. mounting ring; 421. positioning groove; 5. fixing assembly; 51. connecting block; 511. plug hole; 52. sleeve; 521. avoidance hole; 53. plug rod; 54. elastic member; 55. first magnetic member; 56. second magnetic member; 6. connecting rope; 61. first rope body; 62. second rope body; 7. sliding door; 71. first door body; 72. second door body; 73. third door body; 8. anti-bate board. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] Example 1

[0035] The present application discloses a walk-in fume hood, which is described by taking its application in a laboratory as an example. Figure 1 and Figure 2 The walk-in fume hood includes a cabinet body 1, which is in the shape of a rectangular parallelepiped, and the height direction of the cabinet body 1 is vertically arranged. A cavity is arranged inside the cabinet body 1 for placing experimental instruments; an opening is arranged on one side of the cabinet body 1, and a sliding door 7 is arranged on the opening side of the cabinet body 1. A blower 2 and an air collecting hood 3 are arranged on the top of the cabinet body 1, and the blower 2 is fixedly connected to the top wall of the cabinet body 1 by bolts, and the air inlet of the blower 2 faces downward. The air collecting hood 3 is fixedly connected to the air inlet of the blower 2, and the air collecting hood 3 is located inside the cabinet body 1. Therefore, during the experiment, the blower 2 is turned on, and the blower 2 can extract the harmful gases generated in the experiment through the air collecting hood 3, thereby ensuring the working environment in the laboratory.

[0036] The sliding door 7 includes a first door body 71, a second door body 72 and a third door body 73. The first door body 71 is fixedly connected to the top of the side wall of the cabinet 1, the second door body 72 is slidably arranged on the outside of the first door body 71 along the vertical direction, and the third door body 73 is slidably arranged on the outside of the second door body 72 along the vertical direction, and the first door body 71 and the second door body 72, the second door body 72 and the third door body 73, and the first door body 71 and the third door body 73 are not in the same plane. Therefore, when the sliding door 7 needs to be opened, the second door body 72 and the third door body 73 can be folded upwards, thereby reducing the space occupied by the door bodies, making it easier to move the experimental equipment into the cabinet 1.

[0037] Reference Figure 3 and Figure 4 , an adsorption plate 4 is provided on the side of the air hood 3 away from the blower 2, and the adsorption plate 4 includes a working plate 41 and a mounting ring 42. The shape of the working plate 41 is adapted to the shape of the air hood 3, and the size of the working plate 41 is smaller than the size of the air hood 3, so the working plate 41 can be attached to the inner wall of the air hood 3. The working plate 41 includes a frame and activated carbon filled in the frame, and the activated carbon has a strong adsorption capacity, so it can adsorb harmful gases. The mounting ring 42 is arranged at the bottom end of the working plate 41; a positioning block 411 is fixedly connected to the bottom wall of the working plate 41, and four positioning blocks 411 are arranged, and the ring is arranged on the peripheral side of the working plate 41; correspondingly, a positioning groove 421 is opened on the top wall of the mounting ring 42, and four positioning grooves 421 are arranged, which correspond to the four positioning blocks 411 respectively. Inserting the positioning block 411 into the corresponding positioning groove 421 can temporarily connect the working plate 41 and the mounting ring 42.

[0038] Reference Figure 3 , Figure 4 and Figure 5 A fixing assembly 5 is provided between the mounting ring 42 and the air collecting hood 3, and the fixing assembly 5 comprises a connecting block 51, a sleeve 52, an insert rod 53 and an elastic member 54. The connecting block 51 is fixedly connected to the top wall of the mounting ring 42, and a plug hole 511 is provided on the connecting block 51, and the axis of the plug hole 511 is arranged horizontally; the sleeve 52 is a hollow cylinder, and the axis of the sleeve 52 is parallel to the axis of the plug hole 511, and the sleeve 52 is fixedly connected to the outer wall of the air collecting hood 3 on the side close to the blower 2; the insert rod 53 is a round rod, and the diameter of the insert rod 53 is the same as the inner diameter of the sleeve 52, and one end of the insert rod 53 is slidably arranged in the sleeve 52; the elastic member 54 is a spring, and the elastic member 54 is located in the sleeve 52, and the elastic member 54 is connected between one end of the insert rod 53 located in the sleeve 52 and the inner wall of the sleeve 52; under normal conditions, the elastic member 54 is at its original length.

[0039] When the mounting ring 42 needs to be fixed, the rod 53 is first slid into the sleeve 52, and then the mounting ring 42 is moved to the side close to the gas collecting hood 3 until the mounting ring 42 and the gas collecting hood 3 are butted against each other. At this time, the rod 53 and the insertion hole 511 are coaxial, and the rod 53 is loosened. Under the action of the elastic member 54, the end of the rod 53 slides into the insertion hole 511, thereby limiting the movement of the connecting block 51 and fixing the mounting ring 42. The fixing assembly 5 is provided with two groups, and is symmetrically arranged, which helps to enhance the fixing effect of the mounting ring 42.

[0040] In order to further enhance the fixing effect of the mounting ring 42, a through hole 31 is opened at the bottom end of the air collecting hood 3. There are two through holes 31, which correspond to the two connecting blocks 51 respectively. Therefore, after the connecting block 51 is inserted into the corresponding through hole 31, the insertion rod 53 is inserted into the socket 511 on the connecting block 51 to complete the fixing of the mounting ring 42.

[0041] Since the fixing assembly 5 is provided with two groups, it is necessary to slide two insertion rods 53 to complete the installation and removal of the mounting ring 42. In order to simplify the operation process, a connecting rope 6 is also slidably provided on the outer wall of the gas collecting hood 3. The connecting rope 6 includes a first rope body 61 and a second rope body 62. Two second rope bodies 62 are provided, corresponding to the two insertion rods 53 respectively; the two second rope bodies 62 are fixedly connected to the same end of the first rope body 61, and the end of the second rope body 62 away from the first rope body 61 is fixedly connected to the corresponding insertion rod 53; correspondingly, an avoidance hole 521 for the second rope body 62 to pass through is opened on the sleeve 52. By pulling the first rope body 61, the first rope body 61 can drive the corresponding insertion rod 53 to slide through the second rope body 62, so that the two insertion rods 53 slide synchronously, which helps to quickly complete the installation and removal of the mounting ring 42, making the operation process more convenient.

[0042] Reference Figure 2 A compressive board 8 is also bonded to the inner wall of the cabinet 1. The compressive board 8 has strong high temperature resistance and corrosion resistance, so it can protect the inner wall of the cabinet 1, thereby extending the service life of the cabinet 1.

[0043] An LED lamp is embedded on the inner wall at the top of the cabinet 1, so that the inside of the cabinet 1 can be illuminated, making it easy to observe the experimental conditions in the cabinet 1; a lampshade is provided on the outside of the LED lamp, so that the LED lamp can be protected, thereby reducing the damage to the LED lamp caused by the gas in the fume hood.

[0044] The implementation principle of Example 1 is as follows: when the adsorption plate 4 needs to be removed, the second door body 72 and the third door body 73 can be slid upwards first, so that the cabinet 1 is in an open state; then the operator enters the cabinet 1, pulls the first rope body 61, and the first rope body 61 drives the two plug rods 53 to slide synchronously through the second rope body 62. When the plug rods 53 slide out of the corresponding sockets 511, the adsorption plate 4 can be removed from the gas collecting hood 3; then the mounting ring 42 and the working plate 41 are disassembled, and a new working plate 41 is replaced, and the new working plate 41 is replaced. The plate 41 and the mounting ring 42 are temporarily plugged and fixed to form the adsorption plate 4; then the first rope body 61 is pulled, and then the adsorption plate 4 is moved upward, so that the working plate 41 and the inner wall of the gas collecting hood 3 are fitted together. At this time, the connecting block 51 passes through the corresponding through hole 31, and the insertion rod 53 and the corresponding socket 511 are in a coaxial state. Then the first rope body 61 is loosened, and under the action of the elastic member 54, the insertion rod 53 is inserted into the corresponding socket 511, thereby completing the fixation of the mounting ring 42, that is, fixing the adsorption plate 4 on the gas collecting hood 3.

[0045] Example 2

[0046] Reference Figure 6 , the difference between this embodiment and embodiment 1 is that the fixing assembly 5 in this embodiment includes a first magnetic member 55 and a second magnetic member 56. The first magnetic member 55 is fixedly connected to the outer wall at the top of the air collecting hood 3. Two first magnetic members 55 are provided and are respectively located on both sides of the air collecting hood 3; the second magnetic member 56 is fixedly connected to the adsorption plate 4. The number of the second magnetic members 56 is the same as the number of the first magnetic members 55. Each second magnetic member 56 corresponds to a first magnetic member 55. The first magnetic member 55 and the second magnetic member 56 are both magnet blocks, and the magnetic poles of the first magnetic member 55 and the second magnetic member 56 on one side close to each other are in opposite directions. Therefore, after the adsorption plate 4 is moved to a state where it is attracted to the bottom wall of the air collecting hood 3, the first magnetic member 55 and the second magnetic member 56 are attracted together, thereby fixing the adsorption plate 4 on the air collecting hood 3.

[0047] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A walk-in fume hood, comprising a cabinet body (1), a blower (2) and an air collecting hood (3), wherein the blower (2) is arranged on the cabinet body (1), the air collecting hood (3) is connected to an air inlet of the blower (2), and the air collecting hood (3) is located inside the cabinet body (1), characterized in that: An adsorption plate (4) is movably provided on the air inlet side of the air collecting hood (3); the adsorption plate (4) is movable towards a side away from the air collecting hood (3); a fixing component (5) is provided between the air collecting hood (3) and the adsorption plate (4); the fixing component (5) is used to fix the adsorption plate (4) on the air collecting hood (3).

2. A walk-in fume hood according to claim 1, characterized in that: The fixing assembly (5) comprises a connecting block (51), an insert rod (53) and an elastic member (54); the connecting block (51) is arranged on the adsorption plate (4); a plug hole (511) is provided on the connecting block (51); the insert rod (53) is slidably arranged on the gas collecting hood (3); the elastic member (54) is connected between the insert rod (53) and the gas collecting hood (3); when the adsorption plate (4) and the gas collecting hood (3) are in contact with each other, the insert rod (53) is inserted into the plug hole (511).

3. A walk-in fume hood according to claim 2, characterized in that: The gas collecting hood (3) is provided with a through hole (31), and the connecting block (51) is slidably arranged in the through hole (31).

4. A walk-in fume hood according to claim 3, characterized in that: The adsorption plate (4) comprises a working plate (41) and a mounting ring (42); a positioning block (411) is provided on the working plate (41); a positioning groove (421) for inserting the positioning block (411) is provided on the mounting ring (42); and the connection block (51) is arranged on the mounting ring (42).

5. The walk-in fume hood according to claim 2, characterized in that: The fixing components (5) are provided in a plurality of groups and are arranged in a ring around the circumference of the gas collecting hood (3). A connecting rope (6) is movably arranged on the gas collecting hood (3). The connecting rope (6) comprises a first rope body (61) and a second rope body (62) arranged at one end of the first rope body (61). A plurality of second rope bodies (62) are provided. The number of the second rope bodies (62) is the same as the number of the fixing components (5). Each second rope body (62) corresponds to an insertion rod (53). One end of the second rope body (62) away from the first rope body (61) is connected to the corresponding insertion rod (53).

6. The walk-in fume hood according to claim 1, characterized in that: The fixing assembly (5) comprises a first magnetic component (55) and a second magnetic component (56), wherein the first magnetic component (55) is arranged on the gas collecting cover (3), and the second magnetic component (56) is arranged on the adsorption plate (4), and the second magnetic component (56) is used to be attracted to the first magnetic component (55).

7. The walk-in fume hood according to claim 1, characterized in that: The open end of the cabinet (1) is provided with a sliding door (7), the sliding door (7) comprising a first door body (71) arranged on the cabinet (1), a second door body (72) slidably arranged on the first door body (71), and a third door body (73) slidably arranged on the second door body (72), wherein the sliding directions of the second door body (72) and the third door body (73) are both arranged along the height direction of the cabinet (1).

8. The walk-in fume hood according to claim 1, characterized in that: A compact board (8) is provided on the inner wall of the cabinet (1).

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