CN115414981A - Laboratory teaching is with experiment podium - Google Patents

Abstract

The invention relates to the field of experimental teaching equipment, and specifically discloses an experimental platform for laboratory teaching, comprising: a counterweight base; a pedestal assembly, the pedestal assembly is fixedly connected to the counterweight base; The filter removal device is connected with the base assembly; the base expansion device, the base expansion device is connected with the base assembly; the protective panel assembly, the protective panel assembly is connected with the base assembly; wherein, the base expansion device includes: a linkage expansion assembly, the The above-mentioned linkage expansion component is connected with the base component; the booster transmission component, the booster transmission component is connected with the base component, and the internal air-introduced filter device of the device can realize the filtration and purification of harmful gases, and at the same time, it can drive the booster transmission component to run , and then the linkage drives the operation of the protective panel assembly and the linkage expansion assembly to realize the expansion of the use area of the bench and the protection of the experiment, reduce the hidden danger of the experiment safety, and improve the shortcomings of the existing experimental platform.

Description

An experimental platform for laboratory teaching

technical field

The invention relates to the industry of experimental teaching equipment, in particular to an experimental platform for laboratory teaching.

Background technique

The laboratory is a place for experiments, which plays a very important role in the development of science and technology. Conducting experiments can intuitively allow students to learn and perceive, improve students' hands-on ability and practical ability. An important teaching link for technically skilled and applied talents.

At present, when carrying out some experimental operations in the laboratory, most of them need to be taught by teachers on the podium first, but when carrying out some chemical experiments, certain harmful gases or deflagration and explosion phenomena will be produced, and there are certain safety hazards. Therefore, in order to solve this problem Problem, urgently need to develop a kind of experimental platform for laboratory teaching.

Contents of the invention

The object of the present invention is to provide an experimental platform for laboratory teaching to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

An experimental platform for laboratory teaching, comprising:

counterweight base;

A pedestal assembly, the pedestal assembly is fixedly connected to the counterweight base;

Induced air filter device, the induced air filter device is connected with the pedestal assembly, used for induced air purification of harmful gases in experiments;

a pedestal extension device connected to the pedestal assembly;

a protective panel assembly, the protective panel assembly is connected to the pedestal assembly;

Wherein, the pedestal extension device includes:

A linkage expansion component, the linkage expansion component is connected to the pedestal component, and is used for expanding the usable area of the pedestal component;

The supercharging transmission assembly is connected with the pedestal assembly and is used to drive the rotation of the linkage expansion assembly.

Compared with the prior art, the beneficial effect of the present invention is: the design of the device is reasonable, and the internal induced air filter device can realize the filtration and purification of harmful gases, and at the same time, it can drive the booster transmission assembly to run, and then drive the protective panel assembly and The operation of the linkage expansion components realizes the expansion of the use area of the bench and the protection of the experiment, reduces the hidden dangers of the experiment, improves the shortcomings of the existing experimental platform, and has high practicability and market prospects.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of an experimental platform for laboratory teaching in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the external structure of an experimental platform for laboratory teaching in an embodiment of the present invention.

FIG. 3 is a schematic diagram of a local structure at point A in FIG. 1 .

Fig. 4 is a schematic structural diagram of an expansion panel in an experimental platform for laboratory teaching in an embodiment of the present invention.

In the figure: 1-counterweight base, 2-pedestal assembly, 3-induced air filter device, 4-pedestal expansion device, 5-pressurized transmission assembly, 6-linkage expansion assembly, 7-second transmission frame, 8- Protective panel assembly, 201-bottom box, 202-inner compartment, 203-bench, 204-fixed frame, 301-intake grid, 302-filter, 303-fixed frame compartment, 304-driver, 305-elastic Telescopic sleeve, 306-control piece, 307-exhaust window, 501-limiting frame, 502-connecting sliding seat, 503-first transmission frame, 504-connecting shaft frame, 505-limiting telescopic frame, 601-transmission Rack frame, 602-linkage gear, 603-expansion panel, 801-telescopic connection frame, 802-transparent protective panel, 803-pressure sensor.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An experimental platform for laboratory teaching, in one embodiment of the present invention, as shown in Figure 1 and Figure 2, includes: a counterweight base 1; a pedestal assembly 2, and the pedestal assembly 2 is fixedly connected to the counterweight base 1 ; Introduced wind filter device 3, said induced air filter device 3 is connected with pedestal assembly 2, for the induced air purification of experimental harmful gas; pedestal expansion device 4, said pedestal expansion device 4 is connected with pedestal assembly 2; protection A panel assembly 8, the protective panel assembly 8 is connected to the pedestal assembly 2; wherein, the pedestal expansion device 4 includes: a linkage expansion assembly 6, and the linkage expansion assembly 6 is connected to the pedestal assembly 2 for the use of the pedestal assembly 2 area expansion; booster transmission assembly 5, the booster transmission assembly 5 is connected with the pedestal assembly 2, and is used to drive the rotation of the linkage expansion assembly 6.

In one embodiment of the invention:

As shown in Fig. 1 and Fig. 2, the pedestal assembly 2 includes: a bottom box 201, the bottom box 201 is fixedly connected with the counterweight base 1; an inner compartment 202, the inner compartment 202 is fixedly connected with the bottom box 201; A platform 203, the platform 203 is fixedly connected with the end of the bottom box 201 away from the counterweight base 1; a fixed frame 204, the fixed frame 204 is fixedly connected with the inside of the bottom box 201;

The counterweight base 1 can stabilize the overall center of gravity of the podium, and a door (not shown in the figure) is provided outside the bottom box 201, which can be opened to temporarily store the teaching aids through the inner storehouse 202. 3, with the booster transmission assembly 5, it can drive the linkage expansion assembly 6 on both sides to carry out rotation adjustment, so that the linkage expansion assembly 6 on both sides is integrated with the pedestal assembly 2, and the actual usable area of the stand 203 is expanded. At the same time, it can Drive protective panel assembly 8 to jack up.

In one embodiment of the invention:

As shown in Figures 1 to 3, the induced wind filter device 3 includes: an air intake grid 301, which is fixedly connected with the platform 203 through and through; a fixed rack warehouse 303, the fixed rack warehouse 303 communicates with the air intake grid 301; the filter element 302, the filter element 302 communicates with the fixed frame warehouse 303; Internally connected; the driving part 304 is a negative pressure fan; the elastic telescopic sleeve 305 is connected with the fixed frame warehouse 303; the control part 306 is connected with the elastic telescopic sleeve 305 ; The control member 306 selects an electromagnetic valve; the exhaust window 307, the exhaust window 307 is fixedly connected with the stand 203, and communicates with the filter element 302;

When carrying out chemical experiments that generate harmful gases, the driver 304 is turned on to form a negative pressure inside the fixed shelf compartment 303, and the harmful gas negative pressure is introduced into the fixed shelf compartment 303. When the control component 306 is closed, the harmful gas is filtered through the filter component 302 Purify, and then discharge to the outside through the exhaust window 307. When the control member 306 is opened, part of the harmful gas is introduced into the elastic telescopic sleeve 305, so that the elastic telescopic sleeve 305 extends outward, driving the booster transmission assembly 5 to run;

In this application, the control member 306 is not limited to a battery valve, and can also be controlled by a manual valve, as long as the conduction control and adjustment of the gas can be realized, and no specific limitation is made here; the filter member 302 is not limited to a HEPA filter element, and can also use an activated carbon filter element, etc., as long as it can realize the purification and filtration of harmful gases, and there is no specific limitation here.

In one embodiment of the invention:

As shown in Figure 1, the booster transmission assembly 5 includes: a limit frame 501, which is connected to the inside of the platform 203; at least two connecting slides 502, which are connected to the limit Frame 501 limit sliding connection; the first transmission frame 503, the first transmission frame 503 is movably connected with the connecting slide 502; the connecting shaft frame 504, the connecting shaft frame 504 and the first transmission frame 503 on both sides are away from the connecting slide One end of the seat 502 is movably connected; the limit telescopic frame 505, one end of the limit telescopic frame 505 is movably connected with the connecting shaft frame 504, and the other end is fixedly connected with the fixed frame 204;

When the elastic telescopic sleeve 305 moves to the outside, it can drive the connecting shaft frame 504 to move synchronously, and the limit telescopic frame 505 moves down vertically to improve the longitudinal movement stability of the connecting shaft frame 504. The frame 504 is the axis and rotates in opposite directions, and the sliding seats 502 connected on both sides move in opposite directions along the limit frame 501 .

In one embodiment of the invention:

As shown in Figures 1 and 3, the linkage expansion assembly 6 includes: a transmission rack 601, which is fixedly connected to the connecting slide 502; a linkage gear 602, which is connected to the stand 203 is rotatably connected, and meshed with the transmission rack 601; the expansion panel 603, the expansion panel 603 is arranged outside the platform 203, and connects with the linkage gear 602 through the platform 203;

When the connecting slides 502 on both sides move in opposite directions, the transmission racks 601 on both sides can be driven to move in opposite directions, and the linkage gears 602 on both sides can rotate in opposite directions, thereby driving the expansion panels 603 on both sides to rotate backwards, so that the expansion panels on both sides 603 rotates to a horizontal position, and is integrated with the stand 203, thereby expanding the actual use area of the stand 203.

In one embodiment of the invention:

As shown in Figure 1, the experimental platform for laboratory teaching also includes: a second transmission frame 7, the second transmission frame 7 is arranged inside the bench 203, and is fixedly connected with the linkage gear 602;

The second transmission frame 7 is connected with the shaft position of the linkage gear 602. When the linkage gear 602 rotates axially, it can drive the second transmission frame 7 to rotate synchronously, and the second transmission frame 7 that rotates synchronously on both sides can drive the protective panel assembly 8 jacking movement.

In one embodiment of the invention:

As shown in Figures 1 and 2, the protective panel assembly 8 includes: at least two telescopic connecting frames 801, the telescopic connecting frames 801 are connected to the inside of the stand 203; a transparent protective panel 802, one end of the transparent protective panel 802 It is fixedly connected to the two telescopic connecting frames 801, and the other end is connected through the platform 203; at least two pressure sensors 803 are fixedly connected to the outside of the transparent protective panel 802;

When the second drive frame 7 on both sides rotates in opposite directions, it can rotate against the bottom side of the transparent protective panel 802, and drive the transparent protective panel 802 to lift up, preventing the chemical laboratory from causing explosion and causing damage to the students in the front row. A groove body (not shown) is provided inside the top side of the platform 203 for the through connection of the transparent protective panel 802. The device has a built-in PLC logic processor (not shown in the figure). When the transparent protective panel 802 When jacking up, the pressure sensors 803 on both sides are jacked up synchronously. When the pressure sensors 803 on both sides abut against the inner top of the platform 203, the PLC logic controller sends a signal, the control part 306 is closed, and the internal air pressure of the elastic telescopic sleeve 305 is stable. No longer moving, the transmission racks 601 on both sides and the interlocking gear 602 stop running. At this time, the expansion panels 603 on both sides are in the horizontal position, and the gas that is introduced into the interior of the fixed frame warehouse 303 is filtered by the filter element 302 and discharged through the exhaust window 307. to the outside.

The working principle of the present invention is: the counterweight base 1 can stabilize the overall center of gravity of the podium, and a warehouse door (not shown in the figure) is arranged outside the bottom box 201, which can be opened to temporarily store teaching aids through the inner warehouse 202 , under the drive of the air-inducing filter device 3, in conjunction with the booster transmission assembly 5, it can drive the linkage expansion assembly 6 on both sides to perform rotation adjustment, so that the linkage expansion assembly 6 on both sides is integrated with the pedestal assembly 2, and the expansion stand 203 The actual usable area, at the same time, can drive the protective panel assembly 8 to lift up. When carrying out chemical experiments that generate harmful gases, open the driver 304 to form a negative pressure inside the fixed shelf warehouse 303, and the harmful gas negative pressure is introduced into the fixed shelf warehouse 303. , when the control part 306 is closed, the harmful gas is filtered and purified by the filter part 302, and then discharged to the outside through the exhaust window 307. When the control part 306 is opened, part of the harmful gas is introduced into the elastic sleeve 305, so that the elastic sleeve 305 extends to the outside to drive the booster transmission assembly 5 to run. The control member 306 is not limited to a battery valve, but can also be controlled by a manual valve, as long as the conduction control and adjustment of the gas can be realized. Here Not specifically limited; the filter element 302 is not limited to a device such as a HEPA filter element, and can also use an activated carbon filter element, etc., as long as it can realize the purification and filtration of harmful gases, it is not specifically limited here. When the elastic telescopic sleeve When 305 moves to the outside, it can drive the connecting shaft frame 504 to move synchronously, and the limit telescopic frame 505 moves down vertically to improve the longitudinal movement stability of the connecting shaft frame 504. The first transmission frame 503 on both sides takes the connecting shaft frame 504 as the axis , rotate in opposite directions, and the sliding seats 502 connected on both sides move in opposite directions along the limit frame 501;

When the connecting slides 502 on both sides move in opposite directions, the transmission racks 601 on both sides can be driven to move in opposite directions, and the linkage gears 602 on both sides can rotate in opposite directions, thereby driving the expansion panels 603 on both sides to rotate backwards, so that the expansion panels on both sides 603 is rotated to a horizontal position, integrated with the stand 203, and then expands the actual use area of the stand 203. The second transmission frame 7 is connected with the shaft position of the linkage gear 602. When the linkage gear 602 rotates axially, it can drive The second transmission frame 7 rotates synchronously, and the second transmission frame 7 which rotates synchronously on both sides can drive the protective panel assembly 8 to lift and move. When the second transmission frame 7 on both sides rotates oppositely, it can rotate with the bottom side of the transparent protective panel 802 Butt against, drive the transparent protective panel 802 to lift up, prevent the chemical laboratory, produce explosion, and cause damage to the students in the front row. A tank (not shown) is arranged inside the top side of the platform 203 for In the through connection of the transparent protective panel 802, the device has a built-in PLC logic processor (not shown in the figure). When the transparent protective panel 802 is lifted, the pressure sensors 803 on both sides are lifted synchronously. When the inner top of 203 touches, the PLC logic controller sends a signal, the control part 306 is closed, the internal air pressure of the elastic telescopic sleeve 305 is stable, and no longer moves, and the transmission rack 601 and the linkage gear 602 on both sides stop running. The expansion panel 603 is in a horizontal position, and the gas introduced into the fixed shelf compartment 303 is filtered by the filter element 302 and then discharged to the outside through the exhaust window 307 .

The air-inducing filter device 3 inside the device can realize the filtration and purification of harmful gases. At the same time, it can drive the booster transmission component 5 to run, and then drive the protective panel component 8 and the linkage expansion component 6 to run in linkage, so as to realize the expansion of the usable area of the stand 203 And experimental protection, reduce the hidden dangers of experimental safety, and improve the shortcomings of the existing experimental platform.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. An experimental platform for laboratory teaching, characterized in that it comprises: counterweight base; A pedestal assembly, the pedestal assembly is fixedly connected to the counterweight base; Induced air filter device, the induced air filter device is connected with the pedestal assembly, used for induced air purification of harmful gases in experiments; a pedestal extension device connected to the pedestal assembly; a protective panel assembly, the protective panel assembly is connected to the pedestal assembly; Wherein, the pedestal extension device includes: A linkage expansion component, the linkage expansion component is connected to the pedestal component, and is used for expanding the usable area of the pedestal component; The supercharging transmission assembly is connected with the pedestal assembly and is used to drive the rotation of the linkage expansion assembly. 2. The experimental platform for laboratory teaching according to claim 1, wherein the pedestal assembly comprises: a bottom box, the bottom box is fixedly connected to the counterweight base; an inner compartment, the inner compartment is fixedly connected to the inside of the bottom box; a platform, the platform is fixedly connected to the end of the bottom box away from the counterweight base; A fixing frame, the fixing frame is fixedly connected with the inside of the bottom box. 3. The experimental platform for laboratory teaching according to claim 2, characterized in that, the induced air filter device comprises: an air intake grid, and the air intake grid is fixedly connected through the stand; A fixed shelf warehouse, the fixed shelf warehouse is connected with the air intake grid; filter element, the filter element communicates with the fixed frame warehouse; a driving part, the driving part is connected with the inside of the fixed frame; An elastic telescopic sleeve, the elastic telescopic sleeve communicates with the fixed frame warehouse; a control part, the control part is connected with the elastic telescopic sleeve; The exhaust window is fixedly connected with the stand through and communicated with the filter element. 4. The experimental platform for laboratory teaching according to claim 2, wherein the booster transmission assembly comprises: A limit frame, the limit frame is connected with the inside of the bench; At least two connecting sliding seats, the connecting sliding seats are limited and slidingly connected with the limit frame; a first transmission frame, the first transmission frame is movably connected with the connecting slide; Connecting the shaft frame, the connecting shaft frame is movably connected with the end of the first transmission frame on both sides away from the connecting slide seat; A space-limiting telescopic frame, one end of the space-limiting telescopic frame is movably connected with the connecting shaft frame, and the other end is fixedly connected with the fixed frame. 5. The experimental platform for laboratory teaching according to claim 4, characterized in that, the linkage expansion component comprises: A transmission rack frame, the transmission rack frame is fixedly connected with the connecting slide seat; A linkage gear, the linkage gear is rotatably connected to the stand, and meshed with the transmission rack; An expansion panel, the expansion panel is arranged on the outside of the stand, and passes through the stand to be connected with the linkage gear. 6. The experimental platform for laboratory teaching according to claim 2, wherein the experimental platform for laboratory teaching also includes: The second transmission frame, the second transmission frame is arranged inside the platform, and is fixedly connected with the linkage gear. 7. The experimental platform for laboratory teaching according to claim 2, wherein the protective panel assembly comprises: At least two telescopic connecting frames, the telescopic connecting frames are connected to the inside of the platform; A transparent protective panel, one end of the transparent protective panel is fixedly connected to the two telescopic connecting frames, and the other end is connected through the platform; At least two pressure sensors are fixedly connected to the outside of the transparent protective panel.

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