An intelligent experimental teaching system with safety monitoring function

Abstract

The present invention relates to the technical field related to experimental teaching tools, and discloses an intelligent experimental teaching system with a safety monitoring function, comprising a test bench, a control console is arranged on the upper side of the test bench, an alarm is arranged on the upper side of the control console, a first flame sensor and a first smoke sensor are arranged on an inclined surface on one side of the control console, a first opening is arranged on the upper end wall of the test bench, a placement plate is slidably arranged inside the first opening, a bottom plate is fixedly arranged on the lower side of the placement plate, and a safety monitoring component is arranged inside the test bench; the present invention can guide and push two first slides by moving a guide plate, so that the two first slides are separated from each other, and the ventilation volume of the second opening is increased, so that the inert gas can be sprayed into a protective shell through a plurality of second openings, thereby reducing the oxygen concentration in the protective shell; and then the inert gas is sprayed onto the circuit element at a close distance by moving the guide plate, and the temperature of the ignition point of the circuit element is reduced by utilizing the heat absorption characteristic of the inert gas.

Description

Technical Field

[0001] The present invention belongs to the technical field related to experimental teaching tools, and more specifically, particularly relates to an intelligent experimental teaching system with a safety monitoring function. Background Art

[0002] Nowadays, quality-oriented education is gradually gaining popularity in the field of education system in my country. my country's education has changed from the original emphasis on knowledge inculcation to the cultivation of students' interests and hobbies and hands-on practical skills. Junior high school students have a strong thirst for knowledge, a wide range of interests and hobbies, and a strong interest in the things around them. Therefore, the teaching work of junior high school students plays a key role in their growth. As an experiment-based subject, physics requires students to have a basic grasp of experimental methods and ideas, so as to cultivate students' innovative ability, enable them to better discover the physical science around them, apply and solve practical problems, but the experimental teaching tools in the prior art have the following defects:

[0003] In the prior art, during physics teaching, the laboratory bench is an indispensable device in the basic education physics experiment teaching. When students perform physical circuit experiments improperly, the circuit short-circuit and heat up, which easily generates smoke and causes fire. The laboratory benches used in current physics experiments generally use fireproof materials, but cannot handle the circuit components that are on fire. Moreover, when the circuit fails, the circuit protection system of the laboratory will cause the entire laboratory to lose power, affecting the experimental teaching of other students.

[0004] In the prior art, when the safety monitoring component in the intelligent experimental teaching system processes the circuit element on fire, it usually sprays inert gas in the direction of the circuit element to extinguish the fire. However, the inert gas nozzle is far away from the circuit element, making it difficult to use the characteristics of the inert gas to absorb heat and reduce the temperature of the fire scene to quickly extinguish the circuit element.

[0005] In the prior art, when the safety monitoring component in the intelligent experimental teaching system processes the circuit elements that are on fire, since the circuit elements are located on the upper side of the experimental table and the space above the experimental table is large, it is difficult to quickly reduce the oxygen concentration near the circuit elements, causing the flame to be extinguished due to lack of oxygen, thereby affecting the effect of the safety monitoring component in extinguishing the fire on the circuit elements.

[0006] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and an intelligent experimental teaching system with safety monitoring function is provided, in order to achieve a more practical and valuable purpose. Summary of the invention

[0007] The present invention provides an intelligent experimental teaching system with a safety monitoring function, which is used to overcome the above-mentioned defects in the prior art.

[0008] The purpose and effect of the intelligent experimental teaching system with safety monitoring function of the present invention are achieved by the following specific technical means:

[0009] An intelligent experimental teaching system with a safety monitoring function comprises a test bench, a control console is provided on the upper side of the test bench, an alarm is provided on the upper side of the control console, a first flame sensor and a first smoke sensor are provided on an inclined surface of one side of the control console, a first opening is provided on the upper end wall of the test bench, a placement plate is slidably provided inside the first opening, a bottom plate is fixedly provided on the lower side of the placement plate, a safety monitoring component is provided inside the test bench; the safety monitoring component comprises a protective shell, the protective shell is fixed on the upper side of the inner part of the test bench, the bottom plate slides inside the protective shell, a second flame sensor and a second smoke sensor are installed on one side of the inner wall of the protective shell, and the outer wall of the protective shell is provided with a first opening. A cylinder is fixedly provided on one side of the wall, a rotating shaft is rotatably provided inside the cylinder, a first sleeve is sleeved on the outer wall of the rotating shaft, a piston plate is fixedly provided on the outer wall of one end of the first sleeve, the piston plate slides in the cylinder, the interior of the cylinder is separated by the piston plate into a first air pressure chamber and a second air pressure chamber, a circular hole is provided on one side of the inner wall of the protective shell, a disc is rotatably provided inside the circular hole, a plurality of second openings are provided on the circumference of the disc, a plurality of guide plates are provided in a circular array on one side of the piston plate facing the first air pressure chamber, a through hole is provided on the side wall of each guide plate close to the piston plate, and a spray hole is provided on the side wall of each guide plate close to the protective shell.

[0010] According to a further technical solution, two first slides are slidably provided on both sides of each second opening, two springs are connected between the ends of each pair of the first slides that are away from each other and the disc, and the ends of each pair of the first slides that are close to each other are respectively in sliding contact with the inclined surfaces on both sides of one end of the guide plate.

[0011] According to a further technical solution, an annular plate is fixedly disposed on the outer wall of the disk, and the annular plate slides in an annular manner in an inner wall of one side of the protective shell.

[0012] A further technical solution is that a stepper motor is installed on one side of the outer wall of the cylinder, and the output end of the stepper motor is fixedly connected to one end of the rotating shaft; a second sleeve is fixedly provided on one side of the inner wall of the second air pressure chamber, the second sleeve is sleeved on the outer wall of the first sleeve, the inner wall of the second sleeve is in sliding contact with the outer wall of the first sleeve, the inner wall of the second sleeve is symmetrically provided with two arc-shaped grooves, and the outer wall of the first sleeve is symmetrically fixed with two sliders, the two sliders slide in an arc shape in the two arc-shaped grooves respectively, and the two arc-shaped grooves are connected to each other at the head and tail to form a wave-shaped groove structure.

[0013] Further technical solution: on one side of the outer wall of the rotating shaft, a fixed block is fixedly arranged, and the outer wall of the fixed block is in horizontal sliding contact with the inner wall of the first sleeve.

[0014] Further technical solution: an electric telescopic cylinder is installed on the lower side of the protective shell, and the extending end of the electric telescopic cylinder is fixedly connected to the lower side of the bottom plate.

[0015] Further technical solution: two second sliding plates are horizontally slidably arranged on both sides of the first through port. One ends of the two second sliding plates close to each other are fixedly provided with a first rubber block and a second rubber block. A first sealing groove is arranged on one side of the first rubber block, and a first sealing member is fixedly arranged on one side of the second rubber block. The first sealing member slides in the first sealing groove.

[0016] Further technical solution: a plurality of second sealing members are fixedly arranged on the inclined surfaces on both sides of the first sealing member, and a plurality of second sealing grooves are arranged at intervals on the inclined surfaces on both sides inside the first sealing groove. Each second sealing member slides in the second sealing groove.

[0017] Further technical solution: two rotating plates are rotatably arranged at both ends of the bottom plate. Two connecting plates are connected between one ends of the two rotating plates and one ends of the two second sliding plates far from each other. One end of each connecting plate is rotatably connected to one end of the second sliding plate, and the other end of each connecting plate is rotatably connected to one end of the rotating plate.

[0018] Further technical solution: an inert gas tank is arranged on the lower side inside the test bench. A first one-way valve is communicated between the inside of the inert gas tank and the first air pressure chamber. The first air pressure chamber and the inside of the protective shell are communicated through the round hole and the second through port. A first connecting pipe is communicated between the second air pressure chamber and the inside of the protective shell. A gas processor is installed on the lower side inside the test bench. A second connecting pipe is communicated between the second air pressure chamber and the inside of the gas processor. Second one-way valves are installed on the inner walls of the first connecting pipe and the second connecting pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The intelligent experimental teaching system with a safety monitoring function of the present invention is provided with a second slide plate, a first rubber block, a second rubber block, a first sealing groove and a first sealing member. The bottom plate moves downward to drive one end of the two rotating plates to move downward. The one end of the two rotating plates moves downward to cooperate with the other end of the two rotating plates to be limited in the vertical direction by the two connecting plates and the second slide plate. Thus, the one end of the two rotating plates moves downward to drive the two second slide plates to approach each other in the horizontal direction through the two connecting plates. The two second slide plates approach each other to drive the first rubber block and the second rubber block to approach each other. The first rubber block and the second rubber block approach each other to drive the first sealing member to enter the first sealing groove. The first opening is closed by the two second slide plates approaching each other to reduce the space near the circuit element. The first sealing member enters the first sealing groove to perform a preliminary sealing effect on the first opening, which is beneficial to quickly reduce the oxygen concentration near the circuit element and extinguish the flame due to lack of oxygen. Then, through the arrangement of the second sealing groove and the second sealing member, the two second slide plates approach each other, driving the first rubber block and the second rubber block to approach each other, the first rubber block and the second rubber block to approach each other, the movement of the first sealing member drives the movement of the plurality of second sealing members, and the plurality of second sealing members move into the plurality of second sealing grooves respectively, so as to perform multiple sealing actions on the first opening through the contact of the plurality of second sealing members with the second sealing grooves. Finally, through the arrangement of the bottom plate and the rotating plate, when the bottom plate moves downward to the lowest point, one end of the two rotating plates is straightened by the two second slide plates, so that the bottom plate and the two rotating plates form a U-shaped frame inside the protective shell, and the two sides of the U-shaped frame are in sliding contact with the two side walls of the protective shell respectively, and a sealed space is formed by the U-shaped frame in cooperation with the two side walls of the protective shell and the two second slide plates, so as to further reduce the space near the circuit elements, which is conducive to rapidly reducing the oxygen concentration near the circuit elements, so that the flame is extinguished due to lack of oxygen; and to prevent the circuit elements from catching fire and exploding and causing harm to students.

[0021] The intelligent experimental teaching system with safety monitoring function of the present invention, through the setting of the guide plate, the first slide plate, and the spring, the piston plate moves to drive the movement of the plurality of guide plates, and the two first slide plates are guided and pushed by the sliding contact between the ends of the two first slide plates that are close to each other and the inclined surfaces on both sides of one end of the guide plate, so that the two first slide plates are moved away from each other to increase the ventilation volume of the second opening, so that the piston plate moves to spray the inert gas in the first air pressure chamber through the plurality of second openings into the protective shell, reduce the oxygen concentration in the protective shell, and extinguish the flame due to lack of oxygen. Then, through the setting of the through hole and the spray hole, the piston plate moves to make another part of the inert gas in the first air pressure chamber enter the guide plate through the through hole, and cooperate with the movement of the guide plate to pass through the second opening and the circular hole into the protective shell, so that the spray hole gradually approaches the circuit element placed on the board, and the inert gas in the guide plate is sprayed onto the circuit element through the spray hole, so that the inert gas is sprayed onto the circuit element at a close distance, and the heat absorption characteristic of the inert gas is used to reduce the temperature of the ignition point of the circuit element and suppress the spread of the fire. Finally, the first sleeve rotates to drive the piston plate to rotate, the piston plate rotates to drive the guide plates to rotate, the guide plates rotate to drive the disc to rotate, and the disc rotates to drive the second ports to rotate, so that the inert gas in the first air pressure chamber is diffusely sprayed out, and the guide plates rotate to make the inert gas in the guide plate diffusely sprayed out through the spray holes, thereby expanding the contact area between the inert gas and the circuit element, which is beneficial for the inert gas to effectively replace the oxygen around the circuit element, thereby reducing the oxygen concentration; and by expanding the contact area, the inert gas can more fully cover the surface of the circuit element that is on fire, forming a protective layer, effectively isolating oxygen, and preventing the combustion reaction from continuing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is an isometric structural schematic diagram of the present invention;

[0025] Figure 2 It is a front view structural schematic diagram of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0027] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0028] Figure 5 for Figure 3 A schematic diagram of the local enlarged structure at D in the middle;

[0029] Figure 6 It is an isometric structural schematic diagram of the second sleeve in the present invention;

[0030] Figure 7 is a schematic cross-sectional structural diagram of the second sleeve in the present invention;

[0031] Figure 8 It is a schematic diagram of the top view of the structure of the present invention;

[0032] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure at the initial state at the middle BB;

[0033] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at E in the middle;

[0034] Fig.11 for Figure 8 A schematic diagram of the cross-sectional structure of the middle BB in the contracted state;

[0035] Fig.12 for Fig.11 A schematic diagram of the local enlarged structure at F in the middle;

[0036] Fig.13 for Fig.11 Schematic diagram of the local enlarged structure at G in the middle.

[0037] Description of reference numerals:

[0038] Test bench 10, control console 11, alarm 12, first flame sensor 13, first smoke sensor 14, placement plate 15, bottom plate 16, protective shell 17, electric telescopic cylinder 18, cylinder 19, stepping motor 20, piston plate 21, first air pressure chamber 22, second air pressure chamber 23, rotating shaft 24, first sleeve 25, fixed block 26, second sleeve 27, slider 28, arc-shaped slide 29, guide plate 30, through hole 31, spray hole 32, circular hole 33, disc 34, annular plate 35, first slide plate 36, spring 37, inert gas box 38, first one-way valve 39, first connecting pipe 40, gas processor 41, second connecting pipe 42, first port 43, rotating plate 44, second slide plate 45, first rubber block 46, first sealing groove 47, second sealing groove 48, second rubber block 49, first sealing member 50, second sealing member 51, connecting plate 52, second flame sensor 53, second one-way valve 54, second smoke sensor 55, second port 56. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] As attached Figure 1 To Attachment Fig.13 As shown:

[0043] The invention provides an intelligent experimental teaching system with a safety monitoring function.

[0044] Refer to the attached Figure 1 To Attachment Fig.13, including a test bench 10, a control console 11 is provided on the upper side of the test bench 10, an alarm 12 is provided on the upper side of the control console 11, a first flame sensor 13 and a first smoke sensor 14 are provided on an inclined surface on one side of the control console 11, a first opening 43 is provided on the upper end wall of the test bench 10, a placement plate 15 is slidably provided inside the first opening 43, a bottom plate 16 is fixedly provided on the lower side of the placement plate 15, and a safety monitoring component is provided inside the test bench 10; the safety monitoring component includes a protective shell 17, the protective shell 17 is fixed on the upper side of the interior of the test bench 10, the bottom plate 16 slides in the protective shell 17, a second flame sensor 53 and a second smoke sensor 55 are installed on one side of the inner wall of the protective shell 17, and a cylinder 19 is fixedly provided on one side of the outer wall of the protective shell 17, A rotating shaft 24 is rotatably provided inside the cylinder 19, and a first sleeve 25 is sleeved on the outer wall of the rotating shaft 24. A piston plate 21 is fixedly provided on the outer wall of one end of the first sleeve 25, and the piston plate 21 slides inside the cylinder 19. The interior of the cylinder 19 is separated by the piston plate 21 to form a first air pressure chamber 22 and a second air pressure chamber 23. A circular hole 33 is provided on one side of the inner wall of the protective shell 17, and a disc 34 is rotatably provided inside the circular hole 33. A plurality of second openings 56 are provided on the circumference of the disc 34. A plurality of guide plates 30 are provided in a circumferential array on one side of the piston plate 21 facing the first air pressure chamber 22, and a through hole 31 is provided on the side wall of each guide plate 30 close to the piston plate 21, and a spray hole 32 is provided on the side wall of each guide plate 30 close to the protective shell 17.

[0045] Preferably, see Attachment Figure 3 , Attachment Figure 5 Two first slide plates 36 are slidably provided on both sides of each second opening 56 , two springs 37 are connected between the ends of each pair of first slide plates 36 away from each other and the disc 34 , and the ends of each pair of first slide plates 36 close to each other are respectively in sliding contact with the inclined surfaces on both sides of one end of the guide plate 30 .

[0046] Preferably, see Attachment Figure 5 An annular plate 35 is fixedly disposed on the outer wall of the disc 34 , and the annular plate 35 slides in an annular manner in the inner wall of one side of the protective shell 17 .

[0047] Preferably, see Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 6 , Attachment Figure 7A stepper motor 20 is installed on one side of the outer wall of the cylinder 19, and the output end of the stepper motor 20 is fixedly connected to one end of the rotating shaft 24. A second sleeve 27 is fixedly provided on one side of the inner wall of the second air pressure chamber 23. The second sleeve 27 is sleeved on the outer wall of the first sleeve 25. The inner wall of the second sleeve 27 is in sliding contact with the outer wall of the first sleeve 25. Two arc-shaped slide grooves 29 are symmetrically provided on the inner wall of the second sleeve 27. Two sliders 28 are symmetrically fixed on the outer wall of the first sleeve 25. The two sliders 28 slide in an arc shape in the two arc-shaped slide grooves 29 respectively, and the two arc-shaped slide grooves 29 are connected to each other at the head and tail to form a wave-shaped slide groove structure.

[0048] Preferably, see Attachment Figure 3 , Attachment Figure 4 A fixing block 26 is fixedly disposed on one side of the outer wall of the rotating shaft 24 , and the outer wall of the fixing block 26 is in horizontal sliding contact with the inner wall of the first sleeve 25 .

[0049] Preferably, see Attachment Figure 3 , Attachment Fig. 9 An electric telescopic cylinder 18 is installed on the lower side of the protective shell 17, and the extended end of the electric telescopic cylinder 18 is fixedly connected to the lower side of the base plate 16.

[0050] Preferably, see Attachment Fig. 9 To Attachment Fig.13 Two second slide plates 45 are horizontally slidably provided on both sides of the first opening 43, and a first rubber block 46 and a second rubber block 49 are fixedly provided at one end of the two second slide plates 45 close to each other. A first sealing groove 47 is provided on one side of the first rubber block 46, and a first sealing member 50 is fixedly provided on one side of the second rubber block 49. The first sealing member 50 slides in the first sealing groove 47.

[0051] Preferably, see Attachment Fig. 9 To Attachment Fig.13 A plurality of second sealing members 51 are fixedly provided on both side inclined surfaces of the first sealing member 50 , and a plurality of second sealing grooves 48 are spaced apart on both side inclined surfaces inside the first sealing groove 47 , and each second sealing member 51 slides in the second sealing groove 48 .

[0052] Preferably, see Attachment Fig. 9 To Attachment Fig.13 Two rotating plates 44 are rotatably provided at both ends of the bottom plate 16, and two connecting plates 52 are connected between one end of the two rotating plates 44 and one end of the two second slides 45 away from each other. One end of each connecting plate 52 is rotatably connected to one end of the second slide 45, and the other end of each connecting plate 52 is rotatably connected to one end of the rotating plate 44.

[0053] Preferably, see Attachment Figure 3 , Attachment Figure 5 , Attachment Fig.12An inert gas box 38 is provided on the lower side of the interior of the test bench 10, the interior of the inert gas box 38 is connected to the first air pressure chamber 22 and is provided with a first one-way valve 39, the first air pressure chamber 22 is connected to the interior of the protective shell 17 through a circular hole 33 and a second opening 56, the second air pressure chamber 23 is connected to the interior of the protective shell 17 and is provided with a first connecting pipe 40, a gas processor 41 is installed on the lower side of the interior of the test bench 10, the second air pressure chamber 23 is connected to the interior of the gas processor 41 and is provided with a second connecting pipe 42, and second one-way valves 54 are installed on the inner walls of the first connecting pipe 40 and the second connecting pipe 42.

[0054] Specific use of the present invention:

[0055] During normal physics teaching experiments, the teacher turns on the main power switch on the outer wall, and the students place the circuit components required for the experiment on the upper side of the placement board 15, and use the electrical instrument panel and connection jacks on the console 11 to conduct physical experiments. During the experiment, if the operation is improper, it is easy to cause the circuit components to overheat, or even cause the circuit components to smoke and catch fire. At this time, the first flame sensor 13 and the first smoke sensor 14 detect the fire source or smoke through induction and send an electrical signal to the control system. After receiving the electrical signal sent by the first flame sensor 13 and the first smoke sensor 14, the control system cuts off the power supply of the console 11 to prevent the console 11 from being electrified and causing other dangers. And the alarm 12 sounds an alarm to notify students and teachers to evacuate quickly.

[0056] At the same time, the control system controls the safety monitoring component to start, and the electric telescopic cylinder 18 contracts to drive the bottom plate 16 and the placement plate 15 to move downward, and the placement plate 15 moves downward to drive the circuit components that have caught fire to enter the protective shell 17.

[0057] Secondly, the bottom plate 16 moves downward to drive one end of the two rotating plates 44 to move downward. The one end of the two rotating plates 44 moves downward to cooperate with the other end of the two rotating plates 44 to be limited in the vertical direction by the two connecting plates 52 and the second slide plate 45, so that the one end of the two rotating plates 44 moves downward to drive the two second slide plates 45 to move closer to each other in the horizontal direction through the two connecting plates 52. The two second slide plates 45 move closer to each other to drive the first rubber block 46 and the second rubber block 49 to move closer to each other, and the first rubber block 46 and the second rubber block 49 move closer to each other to drive the first sealing member 50 to enter the first sealing groove 47. The first opening 43 is closed by the two second slide plates 45 moving closer to each other, reducing the space near the circuit element; and the first sealing member 50 enters the first sealing groove 47 to perform a preliminary sealing effect on the first opening 43, which is conducive to quickly reducing the oxygen concentration near the circuit element, so that the flame is extinguished due to lack of oxygen.

[0058] At the same time, the two second slide plates 45 approach each other, driving the first rubber block 46 and the second rubber block 49 to approach each other, the first rubber block 46 and the second rubber block 49 to approach each other, the first seal 50 moves, driving the plurality of second seals 51 to move, and the plurality of second seals 51 move and enter the plurality of second sealing grooves 48 respectively, so as to perform multiple sealing actions on the first opening 43 through the plurality of second seals 51 and the second sealing grooves 48 in close contact with each other.

[0059] Next, when the bottom plate 16 moves downward to the lowest point, one end of the two rotating plates 44 is straightened by the two second slide plates 45, so that the bottom plate 16 and the two rotating plates 44 form a U-shaped frame inside the protective shell 17, and the two sides of the U-shaped frame are in sliding contact with the two side walls of the protective shell 17 respectively. The U-shaped frame cooperates with the two side walls of the protective shell 17 and the two second slide plates 45 to form a sealed space, so as to further reduce the space near the circuit components, which is beneficial to quickly reduce the oxygen concentration near the circuit components, so that the flame is extinguished due to lack of oxygen; and prevent the circuit components from catching fire and exploding to cause harm to students.

[0060] Then, the second flame sensor 53 and the second smoke sensor 55 monitor the circuit elements in the protective shell 17. After the second flame sensor 53 and the second smoke sensor 55 sense the fire source or smoke, they send an electrical signal to the control system. After the control system analyzes and performs intelligent processing, the control system receives the electrical signals sent by the first flame sensor 13 and the first smoke sensor 14. The control system sends a command, the stepper motor 20 receives the command, the stepper motor 20 starts to drive the rotating shaft 24 to rotate, and the rotation of the rotating shaft 24 drives the fixed block 26 to rotate. Through the horizontal sliding of the outer wall of the fixed block 26 and the inner wall of the first sleeve 25, the fixed block 26 rotates in the vertical direction to drive the first sleeve 25 to rotate. The rotation of the first sleeve 25 drives the two sliders 28 to rotate, and the two sliders 28 rotate and slide in the two arc-shaped slide grooves 29 respectively. The sliders 28 are guided by the arc-shaped slide grooves 29, and the two arc-shaped slide grooves 29 are connected to each other at the head and tail to form a wave-shaped slide groove structure, so that the two sliders 28 move back and forth horizontally in the two arc-shaped slide grooves 29 in a wave-like manner. The slider 28 is fixedly connected to the first sleeve 25, and the slider 28 moves back and forth horizontally to drive the first sleeve 25 to move back and forth horizontally, and the rotating shaft 24 rotates through the fixed block 26 to drive the first sleeve 25 to rotate, so that the first sleeve 25 rotates and moves back and forth horizontally. The rotation and horizontal movement of the first sleeve 25 drive the piston plate 21 to rotate and move back and forth horizontally.

[0061] When the piston plate 21 moves toward the protective shell 17, the first air pressure chamber 22 is filled with inert gas. The movement of the piston plate 21 drives the movement of the plurality of guide plates 30. The ends of the two first slide plates 36 that are close to each other slide in contact with the inclined surfaces on both sides of one end of the guide plate 30. The movement of the guide plate 30 guides and pushes the two first slide plates 36, so that the two first slide plates 36 move away from each other, increasing the ventilation volume of the second opening 56, so that the piston plate 21 moves to spray a part of the inert gas in the first air pressure chamber 22 through the plurality of second openings 56 into the protective shell 17, reducing the oxygen concentration in the protective shell 17, and extinguishing the flame due to lack of oxygen. Among them, the two first slide plates 36 move away from each other and compress the two springs 37 to generate elastic force. Under the elastic force of the two springs 37, the ends of the two first slide plates 36 that are close to each other can always slide in contact with the inclined surfaces on both sides of one end of the guide plate 30, which is conducive to adjusting the ventilation volume of the second opening 56 according to the movement of the guide plate 30.

[0062] At the same time, the piston plate 21 moves through the first connecting pipe 40 and the second one-way valve 54 located on the inner wall of the first connecting pipe 40 to suck the gas in the protective shell 17 into the second air pressure chamber 23, which is beneficial to reduce the oxygen concentration in the protective shell 17.

[0063] Next, the piston plate 21 moves to allow another part of the inert gas in the first air pressure chamber 22 to enter the guide plate 30 through the through hole 31, and cooperates with the guide plate 30 to move through the second opening 56 and the circular hole 33 to enter the protective shell 17, so that the spray hole 32 gradually approaches the circuit element on the placement plate 15, and the inert gas in the guide plate 30 is sprayed onto the circuit element through the spray hole 32, so that the inert gas is sprayed onto the circuit element at a close distance, and the heat absorption characteristic of the inert gas is utilized to reduce the temperature of the ignition point of the circuit element, thereby suppressing the spread of the fire.

[0064] Then, the first sleeve 25 rotates to drive the piston plate 21 to rotate, the piston plate 21 rotates to drive the guide plates 30 to rotate, the guide plates 30 rotate to drive the disk 34 to rotate, and the disk 34 rotates to drive the annular plate 35 to rotate in an annular manner in the inner wall of the protective shell 17, so as to make the disk 34 rotate smoothly. The rotation of the disk 34 drives the second openings 56 to rotate, so as to make the inert gas in the first air pressure chamber 22 diffusely sprayed, and the guide plates 30 rotate to make the inert gas in the guide plates 30 diffusely sprayed through the spray holes 32, so as to expand the contact area between the inert gas and the circuit element, which is conducive to the inert gas effectively replacing the oxygen around the circuit element, thereby reducing the oxygen concentration; and by expanding the contact area, the inert gas can more fully cover the surface of the circuit element that is on fire, forming a protective layer, effectively isolating oxygen, and preventing the combustion reaction from continuing.

[0065] When the piston plate 21 moves toward the protective shell 17, the movement of the piston plate 21 drives the movement of the plurality of guide plates 30, and under the elastic force of the two springs 37, the two first slide plates 36 are moved closer to each other, thereby reducing the ventilation volume of the second opening 56, and reducing the gas in the protective shell 17 from entering the first air pressure chamber 22 through the circular hole 33 and the second opening 56. The piston plate 21 moves to suck the inert gas in the inert gas box 38 into the first air pressure chamber 22 through the first one-way valve 39, so as to supplement the inert gas in the first air pressure chamber 22, which is conducive to the continuous ejection of inert gas to extinguish the circuit components in the protective shell 17.

[0066] At the same time, the piston plate 21 moves to squeeze the gas in the second air pressure chamber 23 through the second connecting pipe 42 and the second one-way valve 54 located on the inner wall of the second connecting pipe 42 into the gas processor 41 for processing.

[0067] Therefore, by moving the piston plate 21 back and forth in the cylinder 19, the inert gas in the first air pressure chamber 22 is continuously ejected to extinguish the circuit components in the protective shell 17, and the gas in the protective shell 17 is continuously drawn into the second air pressure chamber 23, which is conducive to quickly reducing the oxygen concentration in the protective shell 17, promoting the rapid extinguishing of the circuit components in the protective shell 17, and reducing the degree of damage to the circuit components. The safety monitoring component can perform safety monitoring on the students' physics teaching experiments, and timely cut off the power supply and quickly extinguish the circuit components to prevent damage to students and improve the use of the intelligent experimental teaching system.

[0068] The intelligent experimental teaching system with a safety monitoring function of the present invention is provided with a second slide plate 45, a first rubber block 46, a second rubber block 49, a first sealing groove 47, and a first sealing member 50. The bottom plate 16 moves downward to drive one end of the two rotating plates 44 to move downward. The one end of the two rotating plates 44 moves downward to cooperate with the other end of the two rotating plates 44 to be restricted in the vertical direction of the two connecting plates 52 and the second slide plate 45, so that one end of the two rotating plates 44 moves downward to drive the two second slide plates 45 to approach each other in the horizontal direction through the two connecting plates 52; the two second slide plates 45 approach each other to drive the first rubber block 46 and the second rubber block 49 to approach each other, and the first rubber block 46 and the second rubber block 49 approach each other to drive the first sealing member 50 to enter the first sealing groove 47; the first opening 43 is closed by the two second slide plates 45 approaching each other, thereby reducing the space near the circuit element; and the first sealing member 50 enters the first sealing groove 47 to perform a preliminary sealing effect on the first opening 43, which is conducive to rapidly reducing the oxygen concentration near the circuit element, so that the flame is extinguished due to lack of oxygen. By setting the second sealing groove 48 and the second sealing member 51, the two second slide plates 45 approach each other, driving the first rubber block 46 and the second rubber block 49 to approach each other, and the first rubber block 46 and the second rubber block 49 to approach each other. The first sealing member 50 moves and drives the plurality of second sealing members 51 to move. The plurality of second sealing members 51 move and enter the plurality of second sealing grooves 48 respectively, so that the first opening 43 can be sealed multiple times by the plurality of second sealing members 51 and the second sealing grooves 48 being in close contact with each other. Finally, through the arrangement of the bottom plate 16 and the rotating plate 44, when the bottom plate 16 moves downward to the lowest point, one end of the two rotating plates 44 is straightened by the two second slide plates 45, so that the bottom plate 16 and the two rotating plates 44 form a U-shaped frame inside the protective shell 17, and the two sides of the U-shaped frame are in sliding contact with the two side walls of the protective shell 17 respectively. The U-shaped frame cooperates with the two side walls of the protective shell 17 and the two second slide plates 45 to form a sealed space, so as to further reduce the space near the circuit components, which is beneficial to quickly reduce the oxygen concentration near the circuit components, so that the flame is extinguished due to lack of oxygen; and prevent the circuit components from catching fire and exploding to cause harm to students.

[0069] The intelligent experimental teaching system with a safety monitoring function of the present invention, through the arrangement of the guide plate 30, the first slide plate 36, and the spring 37, the movement of the piston plate 21 drives the movement of the plurality of guide plates 30, and the ends of the two first slide plates 36 approaching each other are in sliding contact with the inclined surfaces on both sides of one end of the guide plate 30, and the movement of the guide plate 30 guides and pushes the two first slide plates 36, so that the two first slide plates 36 move away from each other to increase the ventilation volume of the second opening 56, so that the piston plate 21 moves to spray the inert gas in the first air pressure chamber 22 into the protective shell 17 through the plurality of second openings 56, thereby reducing the oxygen concentration in the protective shell 17 and extinguishing the flame due to lack of oxygen. By setting the through hole 31 and the spray hole 32, the piston plate 21 moves to allow another part of the inert gas in the first air pressure chamber 22 to enter the guide plate 30 through the through hole 31, and cooperates with the guide plate 30 to move through the second opening 56 and the circular hole 33 to enter the protective shell 17, so that the spray hole 32 gradually approaches the circuit element on the placement plate 15, and the inert gas in the guide plate 30 is sprayed onto the circuit element through the spray hole 32, so that the inert gas is sprayed onto the circuit element at a close distance, and the heat absorption characteristic of the inert gas is utilized to reduce the temperature of the ignition point of the circuit element, thereby suppressing the spread of the fire. Finally, the first sleeve 25 rotates to drive the piston plate 21 to rotate, the piston plate 21 rotates to drive the guide plates 30 to rotate, the guide plates 30 rotate to drive the disk 34 to rotate, and the disk 34 rotates to drive the second ports 56 to rotate, so that the inert gas in the first air pressure chamber 22 is diffusely sprayed out, and the guide plates 30 rotate to make the inert gas in the guide plates 30 diffusely sprayed out through the spray holes 32, thereby expanding the contact area between the inert gas and the circuit elements, which is beneficial for the inert gas to effectively replace the oxygen around the circuit elements, thereby reducing the oxygen concentration; and by expanding the contact area, the inert gas can more fully cover the surface of the circuit element that is on fire, forming a protective layer, effectively isolating oxygen, and preventing the combustion reaction from continuing.

[0070] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An intelligent experimental teaching system with safety monitoring function, characterized in that: The test bench (10) comprises a control console (11) on the upper side of the test bench (10), an alarm (12) on the upper side of the control console (11), a first flame sensor (13) and a first smoke sensor (14) on an inclined surface on one side of the control console (11), a first opening (43) on the upper end wall of the test bench (10), a placement plate (15) slidably disposed inside the first opening (43), a bottom plate (16) fixedly disposed on the lower side of the placement plate (15), and a safety monitoring component disposed inside the test bench (10); The safety monitoring component comprises a protective shell (17), wherein the protective shell (17) is fixed to the upper side of the interior of the test bench (10), the bottom plate (16) slides in the protective shell (17), a second flame sensor (53) and a second smoke sensor (55) are installed on one side of the inner wall of the protective shell (17), a cylinder (19) is fixedly provided on one side of the outer wall of the protective shell (17), a rotating shaft (24) is rotatably provided inside the cylinder (19), a first sleeve (25) is sleeved on the outer wall of the rotating shaft (24), a piston plate (21) is fixedly provided on the outer wall of one end of the first sleeve (25), the piston plate (21) slides in the cylinder (19), and the cylinder (19) is provided with a rotating shaft (24) for rotating inside the cylinder (19). The interior of the cylinder (19) is divided into a first air pressure chamber (22) and a second air pressure chamber (23) by the piston plate (21); a circular hole (33) is provided on one side of the inner wall of the protective shell (17); a circular disc (34) is rotatably provided inside the circular hole (33); a plurality of second openings (56) are provided on the circumference of the circular disc (34); a plurality of guide plates (30) are provided in a circular array on one side of the piston plate (21) facing the first air pressure chamber (22); a through hole (31) is provided on the side wall of each guide plate (30) close to the piston plate (21); and a spray hole (32) is provided on the side wall of each guide plate (30) close to the protective shell (17); Two second slide plates (45) are horizontally slidably provided on both sides of the first opening (43); a first rubber block (46) and a second rubber block (49) are fixedly provided at one end of the two second slide plates (45) close to each other; a first sealing groove (47) is provided on one side of the first rubber block (46); a first sealing member (50) is fixedly provided on one side of the second rubber block (49); and the first sealing member (50) slides in the first sealing groove (47); A plurality of second sealing members (51) are fixedly provided on the inclined surfaces on both sides of the first sealing member (50), a plurality of second sealing grooves (48) are spaced apart on the inclined surfaces on both sides inside the first sealing groove (47), and each of the second sealing members (51) slides in the second sealing groove (48); Two rotating plates (44) are rotatably provided at both ends of the bottom plate (16); two connecting plates (52) are connected between one end of the two rotating plates (44) and one end of the two second slide plates (45) that are away from each other; one end of each connecting plate (52) is rotatably connected to one end of the second slide plate (45), and the other end of each connecting plate (52) is rotatably connected to one end of the rotating plate (44).

2. The intelligent experimental teaching system with safety monitoring function according to claim 1 is characterized in that: Two first slide plates (36) are slidably provided on both sides of each second opening (56); two springs (37) are connected between the ends of each pair of first slide plates (36) that are away from each other and the disc (34); and the ends of each pair of first slide plates (36) that are close to each other are respectively in sliding contact with the inclined surfaces on both sides of one end of the guide plate (30).

3. The intelligent experimental teaching system with safety monitoring function according to claim 1 is characterized in that: An annular plate (35) is fixedly provided on the outer wall of the circular disc (34), and the annular plate (35) slides in an annular manner in the inner wall of one side of the protective shell (17).

4. The intelligent experimental teaching system with safety monitoring function according to claim 1 is characterized in that: A stepper motor (20) is installed on one side of the outer wall of the cylinder (19), and the output end of the stepper motor (20) is fixedly connected to one end of the rotating shaft (24). A second sleeve (27) is fixedly provided on one side of the inner wall of the second air pressure chamber (23). The second sleeve (27) is sleeved on the outer wall of the first sleeve (25), and the inner wall of the second sleeve (27) is in sliding contact with the outer wall of the first sleeve (25). The inner wall of the second sleeve (27) is symmetrically provided with two arc-shaped sliding grooves (29), and the outer wall of the first sleeve (25) is symmetrically fixed with two sliding blocks (28). The two sliding blocks (28) slide in an arc shape in the two arc-shaped sliding grooves (29) respectively, and the two arc-shaped sliding grooves (29) are connected to each other at the head and tail to form a wave-shaped sliding groove structure.

5. The intelligent experimental teaching system with safety monitoring function according to claim 4 is characterized in that: A fixing block (26) is fixedly provided on one side of the outer wall of the rotating shaft (24), and the outer wall of the fixing block (26) is in horizontal sliding contact with the inner wall of the first sleeve (25).

6. The intelligent experimental teaching system with safety monitoring function according to claim 1 is characterized in that: An electric telescopic cylinder (18) is installed on the lower side of the protective shell (17), and the extended end of the electric telescopic cylinder (18) is fixedly connected to the lower side of the base plate (16).

7. The intelligent experimental teaching system with safety monitoring function according to claim 1 is characterized in that: An inert gas box (38) is provided on the lower inner side of the test bench (10); the interior of the inert gas box (38) is connected to the first air pressure chamber (22) and is provided with a first one-way valve (39); the first air pressure chamber (22) is connected to the interior of the protective shell (17) through the circular hole (33) and the second opening (56); the second air pressure chamber (23) is connected to the interior of the protective shell (17) and is provided with a first connecting pipe (40); a gas processor (41) is installed on the lower inner side of the test bench (10); the second air pressure chamber (23) is connected to the interior of the gas processor (41) and is provided with a second connecting pipe (42); second one-way valves (54) are installed on the inner walls of the first connecting pipe (40) and the second connecting pipe (42).

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