CN210304971U - Ventilation system for teaching laboratory - Google Patents

Abstract

The utility model relates to a ventilation system for teaching laboratories, which is characterized by comprising a classroom, a plurality of student tables, a plurality of cleaning groove tables, a plurality of air draft devices and an exhaust gas treatment device; the air draft device comprises an air guide cover, a lifting rod, an adjusting arm and a driving motor for controlling the lifting rod to lift, the lifting rod is installed below a ceiling of a classroom, the lifting rod and the adjusting arm are both of a hollow structure, the adjusting arm comprises a first connecting section, a second connecting section and a third connecting section, the second connecting section is respectively pivoted with the first connecting section and the third connecting section, one end, far away from the second connecting section, of the first connecting section is pivoted with the lifting rod, the first connecting section is communicated with the lifting rod, one end, far away from the second connecting section, of the third connecting section is communicated with the air guide cover, the student tables correspond to the air draft device one to one, and the air draft device is prevented from occupying too much space.

Description

Ventilation system for teaching laboratory

Technical Field

The utility model relates to a teaching equipment field especially relates to a ventilation system of teaching laboratory.

Background

In order to make students understand textbook knowledge better, it is an indispensable teaching link to do experiments. In some chemical experiments, chemical substances can generate harmful gas inevitably in the reaction process, in order to ensure the health of students, an exhaust fan is generally arranged for each desk, the exhaust fan is used for pumping away the harmful gas, however, the traditional exhaust fan is generally arranged on the desktop, so that a plurality of spaces are occupied, the exhaust fan also needs to be connected with a pipeline to guide the harmful gas to be subjected to non-toxic treatment outside the classroom, and the pipeline also occupies the spaces on the desktop.

Disclosure of Invention

An object of the utility model is to provide a teaching laboratory ventilation system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a ventilation system for a teaching laboratory is characterized by comprising a classroom, a plurality of student tables, a plurality of cleaning groove tables, a plurality of air draft devices and an exhaust gas treatment device; the air draft device comprises an air guide cover, a lifting rod, an adjusting arm and a driving motor for controlling the lifting rod to lift, the lifting rod is installed below a ceiling of a classroom, the lifting rod and the adjusting arm are both of a hollow structure, the adjusting arm comprises a first connecting section, a second connecting section and a third connecting section, the second connecting section is respectively pivoted with the first connecting section and the third connecting section, one end of the first connecting section, far away from the second connecting section, is pivoted with the lifting rod, the first connecting section is communicated with the lifting rod, one end of the third connecting section, far away from the second connecting section, is communicated with the air guide cover, the driving motor is located on the ceiling of the classroom, the waste gas treatment device is located on one side of the classroom, the waste gas treatment device is connected with the lifting rod pipeline, the student desk is located below the air draft device, and the student tables correspond to the air draft devices one to one, the cleaning groove table is positioned on one side of the student tables, and exhaust fans are arranged on the side walls of the classrooms.

Furthermore, the pivoting position of the lifting rod and the first connecting section, the pivoting position of the first connecting section and the second connecting section, and the pivoting position of the second connecting section and the third connecting section are all provided with rotary bolts for adjusting tightness.

Further, exhaust treatment device is the tubulose, just exhaust treatment device's bottom with the lifter pipeline links to each other, exhaust treatment device's inside from the bottom up is equipped with aspiration pump, photocatalyst net and ultraviolet tube in proper order.

Furthermore, the upper surface of the cleaning groove platform is provided with strip-shaped convex ribs, the lower surface of the desktop of the student desk is provided with strip-shaped grooves, and the convex ribs are embedded into the grooves.

Further, one side of air discharge fan is equipped with exhaust gas sensor and alarm, exhaust gas sensor with alarm electric connection.

Furthermore, the ceiling of the classroom is provided with a connecting plate and a rotating motor, the connecting plate is provided with a power supply interface, one end of the connecting plate is hinged with the ceiling of the classroom, and the rotating motor drives the connecting plate to rotate.

The utility model has the advantages that: through with updraft ventilator sets up on the ceiling in classroom, can avoid updraft ventilator occupies too much space, can also drop the updraft ventilator that corresponds according to the condition that the user did the experiment at the student desktop, avoid the waste of resource.

Drawings

The figures further illustrate the invention, but the embodiments in the figures do not constitute any limitation of the invention.

Fig. 1 is a schematic structural diagram according to an embodiment of the present invention;

fig. 2 is a combination view of a student desk and a sink stand.

Detailed Description

As shown in fig. 1, an embodiment of the present invention provides a ventilation system for teaching laboratory, which comprises a classroom 1, a plurality of student tables 2, a plurality of cleaning groove tables 3, a plurality of air draft devices 4, and an exhaust gas treatment device 5. The air draft device 4 comprises an air guide cover 41, a lifting rod 42, an adjusting arm 43 and a driving motor 44 for controlling the lifting rod 42 to lift, the lifting rod 42 is installed below the ceiling of the classroom 1, the lifting rod 42 and the adjusting arm 43 are both of a hollow structure, the adjusting arm 43 comprises a first connecting section 45, a second connecting section 46 and a third connecting section 47, the second connecting section 46 is respectively pivoted with the first connecting section 45 and the third connecting section 47, one end, far away from the second connecting section, of the first connecting section 45 is pivoted with the lifting rod 42, the first connecting section 45 is communicated with the lifting rod 42, one end, far away from the second connecting section 46, of the third connecting section 47 is communicated with the air guide cover 41, and the driving motor 44 is located on the ceiling of the classroom 1. The exhaust gas treatment device 5 is positioned on one side of the classroom 1, the exhaust gas treatment device 5 is connected with the lifting rod 42 through a pipeline, the student table 2 is positioned below the air draft device 4, the student tables 2 correspond to the air draft device 4 one by one, and the air draft device 4 is arranged on the ceiling of the classroom 1, so that the air blowing device can be prevented from occupying too much movement space, and the air draft device 4 can be lifted up to be kept when an experiment is not performed, and the artificial damage to the air draft device is avoided.

As shown in fig. 1-2, a control cabinet is provided at the corner of the wall in the classroom 1, and the control cabinet controls each driving motor 44 to operate independently, so that in actual use, the corresponding air draft device 4 can be lowered according to whether a person is using each student desk 2. The side wall of classroom 1 is equipped with exhaust fan 11, if updraft ventilator 4 can't take away all harmful gas, exhaust fan 11 can be with remaining harmful gas removal in classroom 1, avoids haring user's health. Exhaust fan 11's one side is equipped with exhaust gas sensor 12 and alarm 13, exhaust gas sensor 12 with alarm 13 electric connection, exhaust gas sensor 12 is used for detecting the harmful gas around exhaust fan 11, exhaust gas sensor 12 includes sulfur dioxide sensor and nitrogen dioxide sensor, works as exhaust gas sensor 12 detects the toxic gas and exceeds standard, alarm 13 then sends the police dispatch newspaper. Lifter 42 with the pin joint department of first linkage segment 45 with the pin joint department of second linkage segment 46 the second linkage segment 46 with the pin joint department of third linkage segment 47 all is equipped with the rotation bolt 48 of adjusting the elasticity, and as the user will when air exhaust device descends, can loosen according to actual need rotation bolt 48 is right again first linkage segment 45 the second is connected with the relative angle of second connection is adjusted, screws up again rotation bolt 48 is fixed, and convenience of customers adjusts according to the condition of actually doing the experiment, and the flexibility is strong.

As shown in fig. 1-2, the exhaust gas treatment device 5 is tubular, an air outlet is arranged at the top of the exhaust gas treatment device 5, the bottom end of the exhaust gas treatment device 5 is connected with the lifting rod 42 through a pipeline, and an air pump 51, a photocatalyst net 52 and an ultraviolet lamp tube 53 are sequentially arranged in the exhaust gas treatment device 5 from bottom to top. Under the action of the air pump 51, harmful gas enters the exhaust gas treatment device 5 from the bottom end of the exhaust gas treatment device 5, and under the irradiation of the ultraviolet lamp 53, the photocatalyst on the photocatalyst net 52 oxidizes and decomposes the harmful gas, so that the harmful gas is purified, and the remaining harmless gas is discharged from the gas outlet. The photocatalyst is a general name of a photo-semiconductor material represented by nano-scale titanium dioxide and having a photocatalytic function, and can generate a strong catalytic degradation function under the action of ultraviolet light and visible light, such as degradation of harmful gases in air, killing of various bacteria, formaldehyde removal, deodorization, stain resistance, air purification and the like.

As shown in fig. 1-2, the sink cleaning table 3 is located at one side of the student desk 2, a water tank and a water tap 32 are arranged in the middle of the sink cleaning table 3, the water tap 32 is located above the water tank, and a water discharge pipe is connected to the bottom of the water tank, penetrates through the floor of the classroom 1 and is connected to a water discharge channel below the classroom 1. The upper surface of the cleaning slot table 3 is provided with a strip-shaped convex rib 31, the lower surface of the desk top of the student desk 2 is provided with a strip-shaped groove 21, the convex rib 31 is embedded into the groove 21, when the cleaning slot table 3 and the student desk 2 are assembled, the convex rib 31 can slide into the groove 21 along the extending direction of the groove 21, and then the cleaning slot table 3 is limited to move in the direction back to the student desk 2, in the embodiment, one cleaning slot table 3 is clamped between every two student desks 2. The lower surface of the ceiling of the classroom 1 is provided with a power supply base 14, a connecting plate 15, a rotating shaft and a rotating motor are arranged in the power supply base 14, the rotating motor drives the rotating shaft to rotate, one end of the connecting plate 15 is connected with the rotating shaft, the connecting plate 15 rotates along with the rotation of the rotating shaft, and a power supply interface is arranged on the connecting plate 15. The user can through the control the switch board in classroom 1 and then control connecting plate 15 withdraws in power base 14, or will connecting plate 15 hangs down thereby convenience of customers links to external equipment power source, so set up, can avoid in the experimentation, thereby liquid splashes to cause the short circuit on the power source.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. A ventilation system for a teaching laboratory is characterized by comprising a classroom, a plurality of student tables, a plurality of cleaning groove tables, a plurality of air draft devices and an exhaust gas treatment device; the air draft device comprises an air guide cover, a lifting rod, an adjusting arm and a driving motor for controlling the lifting rod to lift, the lifting rod is installed below a ceiling of a classroom, the lifting rod and the adjusting arm are both of a hollow structure, the adjusting arm comprises a first connecting section, a second connecting section and a third connecting section, the second connecting section is respectively pivoted with the first connecting section and the third connecting section, one end of the first connecting section, far away from the second connecting section, is pivoted with the lifting rod, the first connecting section is communicated with the lifting rod, one end of the third connecting section, far away from the second connecting section, is communicated with the air guide cover, the driving motor is located on the ceiling of the classroom, the waste gas treatment device is located on one side of the classroom, the waste gas treatment device is connected with the lifting rod pipeline, the student desk is located below the air draft device, and the student tables correspond to the air draft devices one to one, the cleaning groove table is positioned on one side of the student tables, and exhaust fans are arranged on the side walls of the classrooms.

2. The teaching laboratory ventilation system of claim 1, wherein: and rotary bolts for adjusting tightness are arranged at the pin joint of the lifting rod and the first connecting section, the pin joint of the first connecting section and the second connecting section, and the pin joint of the second connecting section and the third connecting section.

3. The teaching laboratory ventilation system of claim 1, wherein: the waste gas treatment device is tubular, the bottom end of the waste gas treatment device is connected with the lifting rod pipeline, and an air suction pump, a photocatalyst net and an ultraviolet lamp tube are sequentially arranged in the waste gas treatment device from bottom to top.

4. The teaching laboratory ventilation system of claim 1, wherein: the upper surface of the cleaning groove table is provided with strip-shaped convex ribs, the lower surface of the desktop of the student desk is provided with strip-shaped grooves, and the convex ribs are embedded into the grooves.

5. The teaching laboratory ventilation system of claim 1, wherein: exhaust gas sensor and alarm are equipped with to one side of air discharge fan, exhaust gas sensor with alarm electric connection.

6. The teaching laboratory ventilation system of claim 1, wherein: the ceiling of classroom is equipped with connecting plate and rotation motor, be equipped with power source on the connecting plate, one end of connecting plate with the ceiling in classroom is articulated mutually, it rotates the motor drive the connecting plate rotates.

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