Laboratory integrated fume hood

Abstract

The present invention discloses a comprehensive fume hood for a laboratory, and specifically relates to the technical field of laboratory ventilation equipment, and mainly includes a fume hood body, a guide frame plate, and a linkage screw. The guide frame plate is located at the top of the fume hood body and is fixedly connected, and the linkage screw is rotatably connected to the inside of the guide frame plate through a bearing, and the outer wall of the linkage screw is provided with a protective mechanism; wherein the protective mechanism includes two threaded sleeves arranged on the outer wall of the linkage screw, and the two threaded sleeves are horizontally slidably connected to the inside of the guide frame plate. The present invention uses a protective mechanism to start a rotating motor to drive the linkage screw to rotate inside the guide frame plate, and the two threaded sleeves respectively drive two linkage racks away from each other, and the rotating shaft stably rotates inside the sleeve support block. After the two suction pipes adjust the lateral angle, the side suction operation is realized, and the toxic gas overflowing from both sides can be realized by fitting the suction ventilation on both sides, which effectively improves the safety of use.

Description

Technical Field

[0001] The present invention relates to the technical field of laboratory ventilation equipment, and more particularly to a comprehensive fume hood for a laboratory. Background Art

[0002] Laboratory fume hoods are one of the important equipment for experimental environment protection. They are widely used and important in many industries such as chemistry, life sciences, pharmaceuticals, and environmental protection. Their main function is to ensure the safety of operators. During the experiment, toxic gases, droplets and other harmful substances may be produced. Fume hoods can take over and absorb these harmful substances to provide operators with a clean and safe working environment.

[0003] After searching the prior art, the Chinese patent publication number CN210230960U discloses a laboratory fume hood, which is provided with a side air outlet assembly on the fume hood; the side air outlet assembly is provided on both the left and right panels; the side air outlet assembly includes a side air outlet cylinder provided on the left panel, a side fan installed on the side air outlet cylinder, and a side outlet provided on the side air outlet cylinder; side guard plates are respectively installed on the left and right panels in the same direction; the side air outlet cylinder is detachably connected to the side guard plate, automatically blowing air into the chamber, and preventing the toxic gas in the chamber of the fume hood from escaping from the side column of the workbench. However, the patent has the following defects:

[0004] Although the laboratory fume hood can inhale toxic gases during the test, the side parts are very likely to cause some toxic gases to spread, the ventilation and inhalation effects on both sides are poor, and the safety of use is poor. For this reason, a comprehensive laboratory fume hood is provided. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a comprehensive fume hood for a laboratory, which comprises a fume hood body, a guide frame plate and a linkage screw, wherein the guide frame plate is located at the top of the fume hood body and is fixedly connected, the linkage screw is rotatably connected to the inside of the guide frame plate through a bearing, and a protective mechanism is provided on the outer wall of the linkage screw;

[0006] The protection mechanism includes two threaded sleeves arranged on the outer wall of the linkage screw, and the two threaded sleeves are horizontally slidably connected to the inside of the guide frame plate, and a rotating motor for driving the linkage screw to rotate is fixedly connected to one side of the guide frame plate; a linkage rack is welded on one side of the two threaded sleeves, and a rotating gear ring is meshingly connected on one side of each linkage rack, and a rotating shaft is fixedly connected to the inner wall of the rotating gear ring concentrically, a linkage plate is welded on the bottom end of the rotating shaft, and a rotating protection component is provided on one side of the linkage plate; a distributed suction component is installed on one side of the inner wall of the fume hood body, and the two threaded sleeves are threadedly connected to the outer wall of the linkage screw, and the two threads of the outer wall of the linkage screw are opposite and symmetrically opened, and the center point of the rotating gear ring and the center point of the rotating shaft are symmetrically arranged on the two threaded sleeves on the same numerical line, and the rotating shaft and the rotating gear ring are both made of carbon fiber material.

[0007] Preferably, a socket support block fixedly connected to the fume hood body is installed below the rotating gear ring, and the bottom end of the rotating shaft passes through the socket support block and is rotatably connected, the rotating gear ring and the socket support block are rotatably connected, an angle sensor is fixedly connected to the top concentrically of the rotating shaft, and a support frame is installed on the outer wall of the angle sensor; the support frame is fixedly connected to the rotating motor and the angle sensor respectively, a controller for driving the output end transmission of the rotating motor is installed on one side of the fume hood body, and the controller is fixedly connected to the fume hood body.

[0008] According to the above technical solution, the rotating motor is started to drive the linkage screw to rotate inside the guide frame plate. The two threaded sleeves move away from each other under the action of the threads. At the same time, the two threaded sleeves respectively drive the two linkage racks to move away from each other. The linkage racks mesh and rotate with the rotating gear ring. The rotating shaft rotates stably inside the sleeve support block, and the rotating shaft drives the linkage plate to rotate at the same time. The rotating rod drives the suction pipe to rotate the lateral angle. When the two suction pipes adjust the lateral angle, the two suction pipes are located on both sides of the laboratory operator.

[0009] Preferably, the rotating protection component includes a suction pipe rotatably arranged on one side of the linkage plate, and adjacent two sides of the suction pipe are fixedly connected with multiple suction buckets in sequence from top to bottom, and one side of the suction pipe is provided with a rotating rod penetrating the linkage plate, and a reciprocating reduction motor is installed at one end of the rotating rod, and the rotating rod is respectively fixedly connected to the suction pipe and the output end of the reciprocating reduction motor, and the outer wall of the rotating rod is rotatably connected to the inside of the linkage plate through a bearing; a support block fixedly connected to the linkage plate is installed above the reciprocating reduction motor, and the reciprocating reduction motor is fixedly connected to the support block, and a connecting hose is fixedly connected to the rear of the suction pipe.

[0010] According to the above technical solution, the fan is started to generate suction force in the two connecting hoses, and the suction pipe generates lateral suction force in the multiple suction buckets. The suction buckets suck the lateral gaps of the lateral ventilation cabinet to complete the suction operation. The support block provides support force for the reciprocating reduction motor, and the reciprocating reduction motor drives the rotating rod to rotate downward 180 degrees inside the linkage plate and then rotate upward 180 degrees. The multiple suction buckets rotate reciprocatingly up and down to suction sideways.

[0011] Preferably, the distributed suction assembly comprises an inclined plate fixedly mounted on one side of the inner wall of the fume hood; a plurality of air-permeable rectangular holes are sequentially opened from top to bottom on one side of the inclined plate, an air intake frame plate is embedded and fixedly connected to the front of the fume hood, and a plurality of air intake rectangular holes are sequentially embedded and opened on one side of the air intake frame plate from top to bottom; a double-headed suction pipe is embedded and fixedly connected to the rear of the fume hood, a connecting pipe is installed on the top of the outer wall of the double-headed suction pipe, a collecting suction pipe is fixedly connected to the top of the connecting pipe, and a sleeve support plate fixedly connected to the connecting pipe is provided on one side of the collecting suction pipe;

[0012] A fan for negative pressure air is installed at the top of the collecting suction pipe, and an output pipe is threadedly connected to the output end of the fan. A flange is fixedly connected to the outer wall of the output pipe away from the fan. The double-ended suction pipe is welded and connected to the fume hood body, and the inner wall diameter of the double-ended suction pipe is larger than the inner wall diameter of the connecting pipe.

[0013] According to the above technical scheme, the fan is started so that the double-headed suction pipe forms negative pressure air for the air inside the fume hood. The multiple air-permeable holes on the inclined plate can realize the suction operation of toxic gases in the laboratory. The air intake holes on the air intake frame plate can realize the side suction operation of the lower part of the operator. The bottom suction and front suction can effectively inhale the toxic gases generated by the experiment inside the fume hood. The connecting pipe passes through the inside of the sleeve support plate and is transported to the inside of the collecting suction pipe for collection, and then transported to the laboratory docking pipeline through the output pipe to complete the external exhaust operation.

[0014] Technical effects and advantages of the present invention:

[0015] The present invention adopts a protective mechanism to start a rotating motor to drive a linkage screw to rotate inside a guide frame plate. The two threaded sleeves move away from each other under the action of the thread. At the same time, the two threaded sleeves respectively drive two linkage racks to move away from each other. The linkage racks mesh and rotate with the rotating gear ring. The rotating shaft rotates stably inside the sleeve support block. The linkage plate enables the rotating rod to drive the suction pipe to rotate at a lateral angle. After the two suction pipes adjust the lateral angles, a side suction operation is realized. The toxic gas overflowing from both sides can be sucked in by both sides. The ventilation and suction effects on both sides are better, and the use safety is effectively improved.

[0016] The present invention uses a rotating protection component to start the fan to generate suction force on two connecting hoses, the connecting hoses generate suction force on the suction pipe, the suction pipe generates side suction force on multiple suction buckets, and the side gaps of the side ventilation cabinet are sucked to complete the suction operation. The side suction air can realize the suction operation of the overflow air on both sides of the experimenter, and the reciprocating reduction motor drives the rotating rod to rotate downward 180 degrees inside the linkage plate and then rotate upward 180 degrees. Multiple suction buckets reciprocate up and down to suck sideways, which can realize the reciprocating up and down large-area side suction of the overflowed toxic experimental gas, and the safety of the experimental operation is effectively improved;

[0017] The present invention uses a distributed suction component to start the fan so that the double-headed suction pipe forms negative pressure air for the air inside the fume hood. The multiple air permeable holes on the inclined plate can realize the suction operation of the laboratory toxic gas. The air intake holes on the air intake frame plate can realize the side suction operation for the lower part of the operator. The bottom suction and front suction can effectively inhale the toxic gas generated by the experiment inside the fume hood. The connecting pipe passes through the inside of the sleeve support plate and is transported to the inside of the collecting suction pipe for collection and then discharged. The side suction and bottom range can be sucked during the experiment to avoid the toxic gas of the experiment from overflowing through the experimental cabinet surface, and the ventilation safety is effectively improved.

[0018] Based on the mutual influence of the above-mentioned multiple effects, the present invention first drives the two suction pipes to synchronously rotate the lateral angles, and then drives the reciprocating reduction motor to drive the rotating rod to rotate downward one hundred and eighty degrees inside the linkage plate, and then continues to rotate upward one hundred and eighty degrees, and finally realizes the suction operation of the side suction and bottom range during the experiment. In summary, it can realize large-scale absorption of laboratory harmful gases on both sides, top sides, front and rear of the laboratory cabinet. The ventilation range of the comprehensive fume hood is wider, the inhalation of harmful gases is avoided, and the ventilation safety is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the comprehensive fume hood for laboratory use of the present invention.

[0020] Figure 2 It is a schematic diagram of the partial structure of the connection between the fume hood body and the guide frame plate of the present invention.

[0021] Figure 3 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0022] Figure 4 It is a schematic diagram of the vertical cross-section structure of the comprehensive fume hood for laboratory use of the present invention.

[0023] Figure 5 It is a schematic diagram of the rear view structure of the comprehensive fume hood for laboratory use of the present invention.

[0024] Figure 6It is a schematic diagram of the partial structure of the connection between the fume hood body and the collecting suction pipe of the present invention.

[0025] The accompanying drawings are marked as follows: 1. fume hood body; 2. guide frame plate; 3. linkage screw; 4. threaded sleeve block; 5. rotating motor; 6. linkage rack; 7. rotating gear ring; 8. rotating shaft; 9. linkage plate; 10. sleeve support block; 11. angle sensor; 12. support frame; 13. controller; 14. rotating rod; 15. suction pipe; 16. suction bucket; 17. reciprocating reduction motor; 18. support block; 19. connecting hose; 20. inclined plate; 21. air permeable rectangular hole; 22. air intake frame plate; 23. air intake rectangular hole; 24. double-headed suction pipe; 25. connecting pipe; 26. collecting suction pipe; 27. fan; 28. output pipe; 29. ​​sleeve support plate; 30. flange. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of 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.

[0027] As attached Figure 1-Figure 6 The laboratory integrated fume hood shown in the figure is provided with a protective mechanism, a rotating protective component, and a distributed suction component. The settings of the various mechanisms and components can achieve a large-scale absorption of laboratory harmful gases on both sides, top sides, front and rear of the laboratory cabinet. The ventilation range of the integrated fume hood is wider, and the inhalation of harmful gases is avoided, and the ventilation safety is effectively improved. The specific structural settings of the various mechanisms and components are as follows.

[0028] In some embodiments of the present invention, as shown in the attached Figure 1-Figure 2 As shown, the comprehensive fume hood for laboratory use, the protection mechanism includes two threaded sleeves 4 arranged on the outer wall of the linkage screw 3, and the two threaded sleeves 4 are horizontally slidably connected to the inside of the guide frame plate 2, and a rotating motor 5 for driving the linkage screw 3 to rotate is fixedly connected to one side of the guide frame plate 2; a linkage rack 6 is welded to one side of the two threaded sleeves 4, and a rotating gear ring 7 is meshingly connected to one side of each linkage rack 6, and a rotating shaft 8 is fixedly connected to the inner wall of the rotating gear ring 7 concentrically, and a linkage plate 9 is welded to the bottom end of the rotating shaft 8, and a rotating protection component is provided on one side of the linkage plate 9; a distributed suction component is installed on one side of the inner wall of the fume hood body 1.

[0029] In some embodiments of the present invention, as shown in the attached Figure 1-Figure 2As shown, a sleeve support block 10 fixedly connected to the fume hood body 1 is installed below the rotating gear ring 7, and the bottom end of the rotating shaft 8 passes through the sleeve support block 10 and is rotatably connected. The rotating gear ring 7 is rotatably connected to the sleeve support block 10, so that the rotating gear ring 7 drives the rotating shaft 8 to rotate stably inside the sleeve support block 10, and the stability of the rotating shaft 8 is effectively improved when it rotates. The top of the rotating shaft 8 is fixedly connected to the same center of the circle with an angle sensor 11, and a support frame 12 is installed on the outer wall of the angle sensor 11; the support frame 12 is respectively connected to the rotating motor 5 and the angle sensor 11 between It is fixedly connected so that when the rotating shaft 8 rotates an angle, the support frame 12 provides a supporting force to the angle sensor 11. The angle sensor 11 senses the rotation angle of the rotating shaft 8. When the rotation angle of the rotating shaft 8 is the same as the angle set by the controller 13, the rotating motor 5 is turned off by the controller 13. A controller 13 for driving the output end transmission of the rotating motor 5 is installed on one side of the fume hood 1, and the controller 13 is fixedly connected to the fume hood 1 so that the controller 13 can control the drive of the rotating motor 5, or implement a shut-down operation on the rotating motor 5.

[0030] In some embodiments of the present invention, as shown in the attached Figure 2-Figure 3 As shown, the rotating protection component includes a suction pipe 15 rotatably arranged on one side of the linkage plate 9, and the adjacent two sides of the suction pipe 15 are fixedly connected with multiple suction buckets 16 in sequence from top to bottom. A rotating rod 14 penetrating the linkage plate 9 is provided on one side of the suction pipe 15, and a reciprocating reduction motor 17 is installed at one end of the rotating rod 14. The rotating rod 14 is fixedly connected to the suction pipe 15 and the output end of the reciprocating reduction motor 17 respectively, and the outer wall of the rotating rod 14 is rotatably connected to the inside of the linkage plate 9 through a bearing; a support block 18 fixedly connected to the linkage plate 9 is installed above the reciprocating reduction motor 17, and the reciprocating reduction motor 17 is fixedly connected to the support block 18, and a connecting hose 19 is fixedly connected to the rear of the suction pipe 15.

[0031] In some embodiments of the present invention, as shown in the attached Figure 4-6 As shown, the distributed suction assembly includes an inclined plate 20 fixedly mounted on one side of the inner wall of the fume hood 1; a plurality of air-permeable rectangular holes 21 are sequentially penetrated from top to bottom on one side of the inclined plate 20; an air intake frame plate 22 is embedded and fixedly connected in front of the fume hood 1, and a plurality of air intake rectangular holes 23 are sequentially embedded and opened on one side of the air intake frame plate 22 from top to bottom; a double-headed suction pipe 24 is embedded and fixedly connected at the rear of the fume hood 1, a connecting pipe 25 is installed at the top end of the outer wall of the double-headed suction pipe 24, a collecting suction pipe 26 is fixedly connected to the top end of the connecting pipe 25, and a sleeve support plate 29 fixedly connected to the connecting pipe 25 is installed on one side of the collecting suction pipe 26;

[0032] A fan 27 for negative pressure air is installed at the top of the collecting suction pipe 26, and an output pipe 28 is threadedly connected to the output end of the fan 27. A flange 30 is fixedly connected to the outer wall of the output pipe 28 and away from the fan 27. The double-ended suction pipe 24 is welded and connected to the fume hood body 1, and the inner wall diameter of the double-ended suction pipe 24 is larger than the inner wall diameter of the connecting pipe 25.

[0033] The working principle of the comprehensive fume hood for laboratory of the present invention is as follows:

[0034] First, when the present invention is side-suctioned, the installer first docks the flange 30 onto the laboratory docking pipe, and the controller 13 starts the rotating motor 5 to drive the linkage screw 3 to rotate inside the guide frame plate 2. The linkage screw 3 drives the two threaded sleeves 4 to move away from each other under the action of the thread, and at the same time, the two threaded sleeves 4 respectively drive the two linkage racks 6 to move away from each other, and the linkage racks 6 and the rotating gear ring 7 mesh and rotate, and the rotating gear ring 7 drives the rotating shaft 8 to rotate stably inside the sleeve support block 10, and the rotating shaft 8 drives the linkage plate 9 to rotate at the same time, and the linkage plate 9 enables the rotating rod 14 to drive the suction pipe 15 to rotate the lateral angle. When the two suction pipes 15 adjust the lateral angle, the two suction pipes 15 are located on both sides of the laboratory operator;

[0035] Secondly, when the present invention rotates to side-suction, the fan 27 is started to make the two connecting hoses 19 generate suction force, and at the same time, the connecting hoses 19 make the suction pipe 15 generate suction force, and the suction pipe 15 makes multiple suction buckets 16 generate side suction force, and the suction buckets 16 suck the lateral gap of the side ventilation cabinet 1 to complete the suction operation, and the side suction air can realize the suction operation of the overflow air on both sides of the experimenter, and at the same time, the support block 18 provides support force for the reciprocating reduction motor 17, and the reciprocating reduction motor 17 drives the rotating rod 14 to rotate downward 180 degrees inside the linkage plate 9 and then rotate upward 180 degrees, and the suction pipe 15 drives multiple suction buckets 16 to rotate reciprocatingly up and down to side-suction, and inhale harmful air on both sides of the ventilation cabinet 1;

[0036] When the present invention performs the front bottom suction at the end, the fan 27 is started so that the double-headed suction pipe 24 forms negative pressure air for the air inside the fume hood 1, and the fan 27 is provided with support force by the sleeve support plate 29. The multiple air-permeable rectangular holes 21 on the inclined plate 20 can realize the suction operation of the laboratory toxic gas. At the same time, the air intake rectangular holes 23 on the air intake frame plate 22 can realize the side suction operation for the lower part of the operator. The bottom suction and the front suction can effectively inhale the toxic gas generated by the experiment inside the fume hood 1. The toxic gas is poured into the inside of the connecting pipe 25 along the double-headed suction pipe 24, and the connecting pipe 25 passes through the inside of the sleeve support plate 29 and is transported to the inside of the collecting suction pipe 26 for collection. The collecting suction pipe 26 transports the air to the inside of the output pipe 28, and then transports it to the laboratory docking pipeline through the output pipe 28, so that the toxic gas can be processed.

[0037] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A comprehensive fume hood for a laboratory, comprising a fume hood body (1), a guide frame plate (2) and a linkage screw (3), wherein the guide frame plate (2) is located at the top of the fume hood body (1) and is fixedly connected, and the linkage screw (3) is rotatably connected to the inside of the guide frame plate (2) through a bearing, and is characterized in that: The outer wall of the linkage screw (3) is provided with a protective mechanism; The protection mechanism comprises two threaded sleeves (4) arranged on the outer wall of the linkage screw (3), and the two threaded sleeves (4) are both horizontally slidably connected to the inside of the guide frame (2), and a rotary motor (5) for driving the linkage screw (3) to rotate is fixedly connected to one side of the guide frame (2); A linkage rack (6) is welded to one side of the two threaded sleeves (4); one side of each linkage rack (6) is meshingly connected to a rotating gear ring (7); a rotating shaft (8) is fixedly connected to the inner wall of the rotating gear ring (7) cocentrically; a linkage plate (9) is welded to the bottom end of the rotating shaft (8); and a rotation protection component is provided on one side of the linkage plate (9); A distribution suction assembly is installed on one side of the inner wall of the fume hood (1); A sleeve support block (10) fixedly connected to the fume hood body (1) is installed below the rotating gear ring (7), and the bottom end of the rotating shaft (8) passes through the sleeve support block (10) and is rotatably connected thereto, and the rotating gear ring (7) and the sleeve support block (10) are rotatably connected thereto; The rotation protection assembly comprises a suction pipe (15) rotatably arranged on one side of a linkage plate (9), a plurality of suction buckets (16) are fixedly connected to adjacent two sides of the suction pipe (15) in sequence from top to bottom, a rotating rod (14) penetrating the linkage plate (9) is provided on one side of the suction pipe (15), a reciprocating reduction motor (17) is mounted on one end of the rotating rod (14), the rotating rod (14) is fixedly connected to the suction pipe (15) and the output end of the reciprocating reduction motor (17), respectively, and the outer wall of the rotating rod (14) is rotatably connected to the inside of the linkage plate (9) via a bearing; A support block (18) fixedly connected to the linkage plate (9) is installed above the reciprocating reduction motor (17), the reciprocating reduction motor (17) and the support block (18) are fixedly connected, and a connecting hose (19) is fixedly connected to the rear of the suction pipe (15); The distributed suction assembly comprises an inclined plate (20) fixedly mounted on one side of the inner wall of the fume hood (1); A plurality of air permeable rectangular holes (21) are sequentially penetrated from top to bottom on one side of the inclined plate (20); an air intake frame plate (22) is embedded and fixedly connected to the front of the fume hood body (1); and a plurality of air intake rectangular holes (23) are sequentially embedded and opened on one side of the air intake frame plate (22) from top to bottom; A double-ended suction pipe (24) is embedded and fixedly connected to the rear of the fume hood (1); a connecting pipe (25) is installed at the top of the outer wall of the double-ended suction pipe (24); a collecting suction pipe (26) is fixedly connected to the top of the connecting pipe (25); and a sleeve support plate (29) fixedly connected to the connecting pipe (25) is installed on one side of the collecting suction pipe (26); A fan (27) for negative pressure air is installed at the top end of the collecting suction pipe (26), an output pipe (28) is threadedly connected to the output end of the fan (27), and a flange (30) is fixedly connected to the outer wall of the output pipe (28) at a position away from the fan (27).

2. The integrated fume hood for laboratory use according to claim 1, characterized in that: The two threaded sleeves (4) are both threadedly connected to the outer wall of the linkage screw (3); the two threads on the outer wall of the linkage screw (3) are opposite and symmetrically arranged; and the two threaded sleeves (4) are symmetrically arranged.

3. The integrated fume hood for laboratory use according to claim 1, characterized in that: The center point of the rotating gear ring (7) and the center point of the rotating shaft (8) are located on the same numerical line, and the rotating shaft (8) and the rotating gear ring (7) are both made of carbon fiber material.

4. The integrated fume hood for laboratory use according to claim 1, characterized in that: An angle sensor (11) is fixedly connected to the top end of the rotating shaft (8) and co-center therewith, and a support frame (12) is mounted on the outer wall of the angle sensor (11); The support frame (12) is fixedly connected to the rotating motor (5) and the angle sensor (11) respectively.

5. The integrated fume hood for laboratory use according to claim 1, characterized in that: A controller (13) for driving the output end transmission of the rotating motor (5) is installed on one side of the fume hood (1), and the controller (13) is fixedly connected to the fume hood (1).

6. The integrated fume hood for laboratory use according to claim 1, characterized in that: The double-ended suction pipe (24) is welded to and communicates with the fume hood body (1); the inner wall diameter of the double-ended suction pipe (24) is greater than the inner wall diameter of the connecting pipe (25).

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