Multifunctional exhaust cabinet with automatic lifting window

Abstract

The invention relates to the technical field of exhaust cabinets, in particular to an exhaust cabinet with a multifunctional automatic lifting window. The cabinet comprises a cabinet body, two mounting frames are symmetrically and fixedly connected to the two sides of the cabinet body, a window is slidably connected between the two mounting frames, and a cleaning mechanism used for removing dust on the surface of the window is arranged between the two mounting frames close to the window. The sides, close to the cleaning mechanism, of the two mounting frames are each provided with a driving mechanism and a supporting mechanism. The driving motor is started to drive the driving mechanism to move, so that the window is driven to move; when the driving mechanism drives the window to ascend, the driving mechanism also drives the cleaning rod to move downwards, the area capable of being cleaned by the cleaning rod is enlarged, the window and the cleaning rod move relatively, friction force between the cleaning rod and the surface of the window is made to be overlapped in two directions, and stubborn dust and stains on the surface of the window can be more effectively removed. And the cleaning rod is retracted to the upper part of the cabinet body by moving downwards from the window.

Description

Technical Field

[0001] The invention relates to the technical field of fume hoods, and in particular to a fume hood with a multifunctional automatic lifting window. Background Art

[0002] The fume hood is a device that integrates ventilation, safety protection and convenient operation. It is widely used in various chemical laboratories, biological laboratories, physical laboratories and other places. In the process of chemical experiments, various volatile chemical reagents are frequently used, such as hydrochloric acid, sulfuric acid, nitric acid and other inorganic acids. These reagents will evaporate in large quantities during the experimental operation, producing toxic and harmful gases. The fume hood can discharge these gases out of the laboratory in time to prevent the experimenters from inhaling them. When the fume hood needs to be used, the automatic lifting window can be automatically opened, which is convenient for the operator to put his hands, experimental equipment, etc. into the fume hood for operation. When the operator leaves the fume hood for a certain distance or the operation is completed, the automatic lifting window will automatically close to prevent harmful gases from leaking into the indoor environment;

[0003] In daily use of the fume hood, dust contained in the air will inevitably adhere to the window. If the dust accumulates on the window for a long time, it will not only affect the observation effect of the window next time, but also make the subsequent cleaning work more laborious when the dust accumulates for a long time to form stubborn stains. At present, most of the existing ways to clean the windows are manual cleaning. However, the manual cleaning method usually cleans only after observing that a lot of dust and stains are accumulated on the window. However, in the process of continuous accumulation of dust, it may have a negative impact on the transparency of the window. In view of this, we propose a multifunctional fume hood with automatic lifting windows. Summary of the invention

[0004] The object of the present invention is to provide a multifunctional exhaust cabinet with an automatically lifting window to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides a multifunctional exhaust cabinet with an automatic lifting window, comprising a cabinet body, two installation frames are symmetrically and fixedly connected to both sides of the cabinet body, wherein a window is slidably connected between the two installation frames, a cleaning mechanism for removing dust from the window surface is provided between the two installation frames close to the window, and a driving mechanism and a supporting mechanism are provided on one side of the two installation frames close to the cleaning mechanism;

[0006] When the window moves upward, the driving mechanism drives the cleaning mechanism to move downward to clean the window to the greatest extent. When the window moves downward, the driving mechanism drives the cleaning mechanism to retract. When the driving mechanism moves, the supporting mechanism is also retracted. After the driving mechanism is reset, the supporting mechanism elastically moves to support the driving mechanism.

[0007] As a further improvement of the technical solution, the cleaning mechanism includes a fixing rod slidably connected to two mounting frames, and a cleaning rod is rotatably connected between the two fixing rods.

[0008] As a further improvement of the technical solution, the driving mechanism includes a No. 1 spur rack fixedly connected to a window on one side of the mounting frame, a rotating rod rotatably connected to the inner wall of the mounting frame, a gear fixedly connected to the outer wall of the rotating rod, a No. 2 spur rack fixedly connected to the side of the fixed rod located inside the mounting frame, a side of the No. 2 spur rack close to the fixed rod is fixedly connected to the fixed rod, and both sides of the gear are respectively meshed with the No. 1 spur rack and the No. 2 spur rack.

[0009] As a further improvement of the present technical solution, the support mechanism comprises at least a mounting rod fixedly connected to the inner wall of the mounting frame, a support rod is slidably connected inside the mounting rod, and when the No. 2 spur rack is in the initial state, the support rod is located below the No. 2 spur rack.

[0010] As a further improvement of the technical solution, a reset spring is fixedly connected to the inner wall of the mounting rod, and the other side of the reset spring is fixedly connected to one side of the support rod, and a limiting block is fixedly connected to the side of the support rod close to the No. 1 spur rack.

[0011] As a further improvement of the technical solution, a side of the No. 1 spur rack close to the limit block is fixedly connected with an extrusion block.

[0012] As a further improvement of the technical solution, the side of the extrusion block close to the limit block is higher than the height of the teeth on the No. 1 spur rack.

[0013] As a further improvement of the technical solution, multiple installation frames are rotatably connected to the inside thereof, a connecting rod is rotatably connected to the installation frame, and two of the rollers are fixedly connected to the connecting rod, a driving motor is fixedly installed on the outer wall of the installation frame, and the output end of the driving motor passes through the installation frame and is fixedly connected to the connecting rod, a rope is sleeved between two adjacent rollers, and the side of the rope away from the roller is fixedly connected to one side of the No. 1 spur rack.

[0014] As a further improvement of the technical solution, an infrared sensor is fixedly installed on one side of the cabinet, a receiver is fixedly connected to one side of the cabinet, and the infrared sensor, the receiver and the drive motor are connected by wires.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the exhaust cabinet with the multifunctional automatic lifting window, the driving mechanism is driven to move by starting the driving motor, thereby driving the window to move;

[0017] When the driving mechanism drives the window to rise, the driving mechanism also drives the cleaning rod to move downward, which not only increases the area that the cleaning rod can clean, but also the relative movement between the window and the cleaning rod makes the friction between the cleaning rod and the window surface superimposed in two directions, thereby more effectively removing stubborn dust and stains on the window surface;

[0018] When the window moves downward, the cleaning rod can be retracted to the top of the cabinet to prevent the cleaning rod from being exposed to the external environment, thereby reducing the risk of accidental collision, scratching or other physical damage to the cleaning rod.

[0019] 2. In the exhaust cabinet with the multifunctional automatic lifting window, the limit block is not squeezed when the window moves downward, and the bottom of the No. 2 spur rack is supported by the elastic movement of the limit block, thereby ensuring the stability of the cleaning rod after it is retracted to the top of the installation frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 3 It is a first side cross-sectional schematic diagram of the installation frame of the present invention;

[0023] Figure 4 It is a second side cross-sectional schematic diagram of the installation frame of the present invention;

[0024] Figure 5 It is a schematic diagram of the cleaning mechanism, the driving mechanism and the supporting mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving mechanism and the supporting mechanism of the present invention;

[0026] Figure 7 It is a side plan view of the driving mechanism and the supporting mechanism of the present invention;

[0027] Figure 8 It is a front plan view of the driving mechanism and the supporting mechanism of the present invention.

[0028] The meaning of each number in the figure is:

[0029] 100, cabinet; 110, mounting frame; 111, window; 120, roller; 121, connecting rod; 122, driving motor; 123, rope; 130, infrared sensor; 140, receiver;

[0030] 200, cleaning mechanism; 210, fixing rod; 211, cleaning rod;

[0031] 300, driving mechanism; 310, spur rack No. 1; 311, rotating rod; 312, gear; 313, spur rack No. 2;

[0032] 400, support mechanism; 410, mounting rod; 411, support rod; 412, limit block; 413, return spring; 420, extrusion block. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 8 As shown, the present embodiment provides a multifunctional exhaust cabinet with an automatic lifting window, including a cabinet 100, two mounting frames 110 are symmetrically fixedly connected to both sides of the cabinet 100, wherein a window 111 is slidably connected between the two mounting frames 110, and the window 111 is made of transparent glass, so that the operator can observe the experimental conditions inside the cabinet 100 through the window 111, and a cleaning mechanism 200 for dust removal on the surface of the window 111 is provided between the two mounting frames 110 near the window 111, so as to ensure that the operator can clearly see the experimental process, equipment operation status or sample processing status in the cabinet 100, and a driving mechanism 300 and a supporting mechanism 400 are provided on one side of the two mounting frames 110 near the cleaning mechanism 200;

[0035] When the window 111 moves upward, the driving mechanism 300 drives the cleaning mechanism 200 to move downward to clean the window 111 to the greatest extent. When the window 111 moves downward, the driving mechanism 300 drives the cleaning mechanism 200 to be folded, effectively preventing the cleaning mechanism 200 from being exposed to the outside when not in use, thereby reducing the risk of accidental collision, scratches or other physical damage to the cleaning mechanism 200. When the driving mechanism 300 moves, the supporting mechanism 400 is driven to be folded. After the driving mechanism 300 is reset, the driving mechanism 300 is supported by the elastic movement of the supporting mechanism 400, thereby ensuring the stability of the driving mechanism 300 after movement.

[0036] The present invention takes into account that in the daily use of the exhaust cabinet, dust contained in the air will inevitably adhere to the window, which will affect the observation effect of the window next time. At present, the manual cleaning method is usually to clean the window only after observing that a lot of dust stains are accumulated on the window. However, in the process of continuous accumulation of dust, the transparency of the window may have an adverse effect; therefore, a cleaning mechanism 200 is provided, and when the window 111 is raised or lowered, the window 111 can be cleaned by the cleaning mechanism 200, so that when the window 111 is closed and an experiment is performed, the cleanliness of the window 111 can be ensured;

[0037] Considering that after the window 111 moves upward, there is still a distance between the bottom of the window 111 and the cleaning mechanism 200, in order to clean the window 111 to the greatest extent; therefore, a driving mechanism 300 is provided, and the driving mechanism 300 is driven to move while the window 111 moves upward, so that the driving mechanism 300 drives the cleaning mechanism 200 to move downward, so that the window 111 and the cleaning mechanism 200 move relative to each other, so that the friction between the cleaning mechanism 200 and the surface of the window 111 is superimposed in two directions, thereby being able to more effectively remove stubborn dust and stains on the surface of the window 111, and after the window 111 moves downward and closes, the cleaning mechanism 200 can be retracted above the cabinet 100 to avoid the cleaning mechanism 200 being exposed to the external environment, thereby reducing the risk of the cleaning mechanism 200 being accidentally hit, scratched or otherwise physically damaged;

[0038] In addition, when the driving mechanism 300 drives the window 111 to move upward, it drives the supporting mechanism 400 to elastically contract, so that the supporting mechanism 400 does not support the driving mechanism 300. When the driving mechanism 300 drives the window 111 to move downward, it drives the supporting mechanism 400 to elastically move to support the bottom of the driving mechanism 300, thereby ensuring the stability of the driving mechanism 300. Since the components of the driving mechanism 300 are connected to the cleaning mechanism 200, the stability of the driving mechanism 300 is ensured while also ensuring the stability of the cleaning mechanism 200 after it is retracted to the top of the cabinet 100.

[0039] Considering the need to clean the window 111, Figure 5 As shown, the specific structure of the cleaning mechanism 200 is further disclosed. The cleaning mechanism 200 includes a fixed rod 210 slidably connected to two mounting frames 110, and a cleaning rod 211 is rotatably connected between the two fixed rods 210. During the lifting and lowering process of the window 111, since one side of the cleaning rod 211 is in contact with the surface of the window 111, the cleaning rod 211 can roll and clean the surface of the window 111 when one side of the cleaning rod 211 passes through.

[0040] In order to increase the cleaning effect of the cleaning rod 211 on the window 111, as shown in FIG. Figure 4-Figure 8As shown, the specific structure of the driving mechanism 300 is further disclosed, the driving mechanism 300 includes a No. 1 spur rack 310 fixedly connected to one side of the window 111 inside the mounting frame 110, the inner wall of the mounting frame 110 is rotatably connected to a rotating rod 311, the outer wall of the rotating rod 311 is fixedly connected to a gear 312, a No. 2 spur rack 313 is fixedly connected to one side of the fixed rod 210 located inside the mounting frame 110, the No. 2 spur rack 313 is fixedly connected to the fixed rod 210 on one side close to the fixed rod 210, the two sides of the gear 312 are respectively meshed with the No. 1 spur rack 310 and the No. 2 spur rack 313, when the No. 1 spur rack 310 moves upward, it meshes with the gear 312, and can drive the gear 312 to mesh and rotate, because the gear 312 is meshed with the No. 2 spur rack 313, the No. 2 spur rack is driven by the rotation of the gear 312 The spur rack 313 moves downward, thereby driving the fixing rod 210 to move downward, and then driving the cleaning rod 211 to clean the window 111. When the cleaning rod 211 moves downward and the window 111 moves upward, a relative motion is generated between the two. This relative motion causes the friction between the cleaning rod 211 and the surface of the window 111 to be superimposed in two directions, thereby more effectively removing the stubborn dust and stains on the surface of the window 111. In addition, since the bottom of the window 111 is still at a distance from the cleaning rod 211 when it moves upward to the final state, and the cleaning rod 211 moves downward synchronously, the cleaning rod 211 can cover the area near the bottom of the window 111 through its own downward displacement during the upward movement of the window 111, thereby cleaning the window 111 to the greatest extent.

[0041] In order to ensure the stability of the cleaning rod 211 after it is retracted to the top of the cabinet 100, Figure 4-Figure 8 As shown, the specific structure of the support mechanism 400 is further disclosed. The support mechanism 400 at least includes a mounting rod 410 fixedly connected to the inner wall of the mounting frame 110, and a support rod 411 is slidably connected inside the mounting rod 410. When the No. 2 spur rack 313 is in an initial state, the support rod 411 is located below the No. 2 spur rack 313. When the cleaning rod 211 is located above the cabinet 100, the support rod 411 is located below the No. 2 spur rack 313, thereby supporting the No. 2 spur rack 313 and preventing the No. 2 spur rack 313 from sliding, thereby driving the fixed rod 210 and the cleaning rod 211 to slide, thereby ensuring the stability of the cleaning rod 211 after it is retracted to the top of the cabinet 100.

[0042] After the support rod 411 is compressed and retracted, when the support rod 411 is not compressed, the support rod 411 needs to be reset, such as Figure 4As shown, a return spring 413 is fixedly connected to the inner wall of the mounting rod 410, and the other side of the return spring 413 is fixedly connected to one side of the support rod 411, and the side of the support rod 411 close to the No. 1 spur rack 310 is fixedly connected to a limit block 412. When the limit block 412 is squeezed, the support rod 411 is driven to be retracted into the mounting rod 410. At this time, the return spring 413 is deformed by the force. After the limit block 412 is not squeezed, the return spring 413 drives the support rod 411 and the limit block 412 to reset and move under the force of restoring the deformation.

[0043] In order to drive the support rod 411 to shrink, Figure 6 As shown, a squeezing block 420 is fixedly connected to one side of the No. 1 spur rack 310 close to the limit block 412. When the No. 1 spur rack 310 moves upward, the squeezing block 420 is driven to move upward, so that the squeezing block 420 squeezes the support rod 411, thereby driving the support rod 411 to retract into the interior of the mounting rod 410.

[0044] Since the side of the support rod 411 supporting the second spur rack 313 has a certain length, before the first spur rack 310 is engaged with the gear 312, the top of the support rod 411 does not need to support the bottom of the second spur rack 313 to avoid motion interference. Figure 8 As shown, one side of the extrusion block 420 close to the limit block 412 is higher than the height of the teeth on the No. 1 spur rack 310. Therefore, before the teeth of the No. 1 spur rack 310 mesh with the gear 312, the extrusion block 420 has squeezed the limit block 412, driving the support rod 411 to move, thereby preventing the No. 1 spur rack 310 from meshing with the No. 2 spur rack 313 and driving the No. 2 spur rack 313 to move downward, thereby avoiding motion interference between the No. 2 spur rack 313 and the support rod 411.

[0045] In order to drive the first spur rack 310 to move, Figure 2 As shown, multiple installation frames 110 are rotatably connected to rollers 120 inside, and the installation frames 110 are rotatably connected to connecting rods 121, and two of the rollers 120 are fixedly connected to the connecting rods 121, and a driving motor 122 is fixedly installed on the outer wall of the installation frame 110, and the output end of the driving motor 122 passes through the installation frame 110 and is fixedly connected to the connecting rod 121, and a rope 123 is sleeved between two adjacent rollers 120, and the side of the rope 123 away from the roller 120 is fixedly connected to one side of the No. 1 spur rack 310, when the driving motor 122 is started, it drives the connecting rod 121 to rotate, thereby driving the roller 120 to rotate, and then drives the rope 123 to be reeled onto the roller 120, and the reeling of the rope 123 drives the No. 1 spur rack 310 to move upward.

[0046] When the operator moves to the front of the cabinet 100, the drive motor 122 can be automatically started. Figure 1As shown, an infrared sensor 130 is fixedly installed on one side of the cabinet 100, and a receiver 140 is fixedly connected to one side of the cabinet 100. The infrared sensor 130, the receiver 140 and the drive motor 122 are connected by wires. When the operator moves in front of the cabinet 100, the infrared sensor 130 senses the person and transmits the signal to the receiver 140. The signal processed by the receiver 140 will be transmitted to the controller, and the drive motor 122 will be started by the command issued by the controller.

[0047] Working principle: When the operator moves to the front of the cabinet 100, the infrared sensor 130 senses the person and transmits the signal to the receiver 140. The signal processed by the receiver 140 is transmitted to the controller. The command issued by the controller starts the drive motor 122. The drive motor 122 starts to drive the connecting rod 121 to rotate, thereby driving the roller 120 to rotate, and then drives the rope 123 to be rolled onto the roller 120. The rope 123 is rolled up and drives the No. 1 spur rack 310 to move upward, thereby driving the window 111 to move upward. The window 111 rises, which is convenient for the operator to place the tool inside the cabinet 100;

[0048] When the window 111 moves upward, the cleaning rod 211 can roll and clean the surface of the window 111, and when the No. 1 spur rack 310 moves upward, the extrusion block 420 is driven to move upward, and the extrusion block 420 squeezes the limit block 412 to drive the limit block 412 to contract, and the contraction of the limit block 412 drives the support rod 411 to contract toward the inside of the installation rod 410, so that the support rod 411 does not support the No. 2 spur rack 313 below. At the same time, the No. 1 spur rack 310 moves upward, driving the gear 312 to rotate in meshing, thereby driving the No. 2 spur rack 313 to move downward, and then driving the fixing rod 210 to move downward. The fixing rod 210 moves downward and drives the cleaning rod 211 to move downward, so as to clean the window 111 to the greatest extent.

[0049] When the operator places the tools and moves away from the cabinet 100 so that the infrared sensor 130 cannot detect the person, the window 111 is driven to move downward by the reverse rotation of the driving motor 122, thereby driving the No. 1 spur rack 310 and the extrusion block 420 to move downward, and driving the No. 2 spur rack 313 to move upward. When the extrusion block 420 moves downward, the limit block 412 is not squeezed. Under the elastic force of the reset spring 413, the limit block 412 is reset and moved, so that the limit block 412 supports the No. 2 spur rack 313, thereby ensuring the stability of the cleaning rod 211 after it is received above the installation frame 110.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional exhaust cabinet with an automatic lifting window, comprising a cabinet body (100), two mounting frames (110) are symmetrically fixedly connected to both sides of the cabinet body (100), wherein a window (111) is slidably connected between the two mounting frames (110), characterized in that: A cleaning mechanism (200) for removing dust from the surface of the window (111) is provided between the two installation frames (110) close to the window (111), and a driving mechanism (300) and a supporting mechanism (400) are provided on one side of the two installation frames (110) close to the cleaning mechanism (200); When the window (111) moves upward, the driving mechanism (300) drives the cleaning mechanism (200) to move downward to clean the window (111) to the greatest extent; when the window (111) moves downward, the driving mechanism (300) drives the cleaning mechanism (200) to retract; when the driving mechanism (300) moves, the supporting mechanism (400) is driven to retract; after the driving mechanism (300) is reset, the supporting mechanism (400) elastically moves to support the driving mechanism (300).

2. The multifunctional fume hood with automatic lifting window according to claim 1 is characterized in that: The cleaning mechanism (200) comprises a fixing rod (210) slidably connected to two installation frames (110), and a cleaning rod (211) is rotatably connected between the two fixing rods (210).

3. The multifunctional fume hood with automatic lifting window according to claim 2 is characterized in that: The driving mechanism (300) comprises a first spur rack (310) fixedly connected to a window (111) located on one side of the installation frame (110); a rotating rod (311) is rotatably connected to the inner wall of the installation frame (110); a gear (312) is fixedly connected to the outer wall of the rotating rod (311); a second spur rack (313) is fixedly connected to the side of the fixed rod (210) located inside the installation frame (110); a side of the second spur rack (313) close to the fixed rod (210) is fixedly connected to the fixed rod (210); and two sides of the gear (312) are respectively meshed with the first spur rack (310) and the second spur rack (313).

4. The multifunctional fume hood with automatic lifting window according to claim 3 is characterized in that: The support mechanism (400) at least comprises a mounting rod (410) fixedly connected to the inner wall of the mounting frame (110), a support rod (411) being slidably connected inside the mounting rod (410), and when the second spur rack (313) is in an initial state, the support rod (411) is located below the second spur rack (313).

5. The multifunctional fume hood with automatic lifting window according to claim 4 is characterized in that: A return spring (413) is fixedly connected to the inner wall of the mounting rod (410), and the other side of the return spring (413) is fixedly connected to one side of the support rod (411), and the side of the support rod (411) close to the first spur rack (310) is fixedly connected to a limit block (412).

6. The multifunctional fume hood with automatic lifting windows according to claim 5, characterized in that: A squeezing block (420) is fixedly connected to one side of the No. 1 spur rack (310) close to the limiting block (412).

7. The multifunctional fume hood with automatic lifting windows according to claim 6, characterized in that: The side of the extrusion block (420) close to the limit block (412) is higher than the height of the teeth on the No. 1 spur rack (310).

8. The multifunctional fume hood with automatic lifting windows according to claim 1, characterized in that: A plurality of the installation frames (110) are rotatably connected to rollers (120) inside, the installation frames (110) are rotatably connected to connecting rods (121), and two of the rollers (120) are fixedly connected to the connecting rods (121), a driving motor (122) is fixedly installed on the outer wall of the installation frame (110), and the output end of the driving motor (122) passes through the installation frame (110) and is fixedly connected to the connecting rod (121), a rope (123) is sleeved between two adjacent rollers (120), and a side of the rope (123) away from the rollers (120) is fixedly connected to a side of the first spur rack (310).

9. The multifunctional fume hood with automatic lifting windows according to claim 1, characterized in that: An infrared sensor (130) is fixedly mounted on one side of the cabinet (100), a receiver (140) is fixedly connected to one side of the cabinet (100), and electric wires are connected between the infrared sensor (130), the receiver (140) and the drive motor (122).

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