CN216603914U - School laboratory safety management device based on thing networking - Google Patents

Abstract

The utility model provides a school laboratory safety management device based on the Internet of things, which comprises a laboratory table, wherein a laboratory zone and a cleaning zone are arranged on the laboratory table, a vertically arranged supporting plate is fixed on one side of the laboratory table, an installation frame arranged along the length direction of the laboratory table is fixed on the top of the supporting plate, a movable block capable of sliding along the length direction of the installation frame is arranged in the installation frame, a fire extinguisher horizontally arranged is installed at the bottom of the movable block through an installation seat, an opening and closing mechanism capable of opening and closing the fire extinguisher is installed in the movable block, a plurality of fire alarm devices are installed above the laboratory zone at the bottom of the installation frame, and the fire alarm devices can detect the fire condition of the corresponding area of the laboratory zone. The device can the automated inspection condition of a fire to drive the fire extinguisher and remove and carry out automatic fire extinguishing to corresponding fire extinguishing area, need not artificial putting out a fire, fire control effect is good, and safer.

Description

School laboratory safety management device based on thing networking

Technical Field

The utility model relates to the technical field of laboratory management, in particular to a school laboratory safety management device based on the Internet of things.

Background

The laboratory management system of the internet of things is a computer software and hardware system which scientifically manages various resources and information of a laboratory through a computer technology, an information technology and a network technology and can comprehensively monitor the safety of the laboratory.

However, when a fire disaster occurs on the laboratory bench, the fire is required to go to the fire extinguisher cabinet manually, the fire extinguisher is taken out and then returns to a fire area to extinguish the fire, the fire extinguishing time is delayed, the fire is easily uncontrollable, and the laboratory is in a relatively closed space, so that oxygen deficiency or burn is easily caused by manual fire extinguishing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a school laboratory safety management device based on the internet of things, which can automatically detect fire, drive a fire extinguisher to move to a corresponding fire extinguishing area for automatic fire extinguishing, does not need artificial fire extinguishing, and is good in fire extinguishing effect and safer.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

a school laboratory safety management device based on the Internet of things comprises a laboratory table, wherein a laboratory area and a cleaning area are arranged on the laboratory table, a supporting plate which is vertically arranged is fixed on one side of the experiment table, a mounting frame which is arranged along the length direction of the experiment table is fixed on the top of the supporting plate, a movable block which can slide along the length direction of the mounting frame is arranged in the mounting frame, a fire extinguisher which is horizontally placed is arranged at the bottom of the movable block through a mounting seat, an opening and closing mechanism which can open and close the fire extinguisher is arranged in the movable block, a plurality of fire alarm devices are arranged at the bottom of the mounting frame above the experimental area, the fire alarm devices can detect the fire condition of the corresponding area of the experimental area, when a small-range fire disaster occurs in the experimental area, the movable block drives the fire extinguisher to move above a fire disaster area, and the fire extinguisher is opened through the opening and closing mechanism and is ejected from top to bottom to extinguish the fire;

the fire extinguishing device is characterized in that the two sides of the mounting frame are respectively provided with a liquid pumping mechanism, the bottom of the moving block is provided with a liquid mixing pipe connected with the liquid pumping mechanism, and when a large-range fire disaster occurs in an experimental area, the moving block slides in the mounting frame in a reciprocating manner, so that a fire extinguishing agent pumped by the liquid pumping mechanism is uniformly sprayed out from top to bottom through the liquid mixing pipe to extinguish the fire.

Preferably, a motor capable of rotating forward and backward is installed at one end of the installation frame, a first threaded rod is connected in the installation frame in a rotating mode, the moving block is in threaded connection with the first threaded rod, and a pair of bevel gear pairs connected with the motor and the first threaded rod is installed in the installation frame and used for transmitting power of the motor to the first threaded rod.

Preferably, the opening and closing mechanism comprises a spring, a resisting plate, a plurality of pairs of conducting plates and two conducting heads, wherein a groove for inserting a pressing handle of the fire extinguisher is formed in the bottom of the moving block, the resisting plate is connected in the groove in a sliding mode, the spring is elastically connected between the inner wall of the groove and the side wall of the resisting plate, the two conducting heads are respectively embedded in two sides of the moving block and are respectively electrically connected with two ends of the spring, the plurality of pairs of conducting plates are respectively embedded in the inner wall, opposite to the installation frame, of the installation frame and correspond to the fire alarm in position one to one, the plurality of pairs of conducting plates are connected in parallel in an external power supply line, and after the conducting heads contact the conducting plates, the spring can be electrified.

Preferably, the liquid pumping mechanism comprises two cylinders, a magnetic piston and a magnetic slider, wherein one cylinder can pump aluminum sulfate liquid, the other cylinder can pump ammonium bicarbonate and foaming agent, the two cylinders are respectively fixed on two sides of the mounting frame, the magnetic piston is arranged in the cylinder, two guide rods penetrating through the magnetic piston are fixed in the cylinder, strip-shaped openings for the magnetic slider to penetrate through are respectively arranged on two sides of the mounting frame, one side of the magnetic slider is fixed on the side wall of the movable block, the other side of the magnetic slider can be attached to the side wall of the cylinder when moving to the position of the cylinder and is magnetically attracted with the magnetic piston in the cylinder, one end of the cylinder is connected with a liquid suction pipe and a liquid outlet pipe, check valves are respectively arranged in the liquid suction pipe and the liquid outlet pipe, the side wall of the liquid suction pipe is further connected with an air suction pipe, an electromagnetic three-way valve is arranged at the connection position, and a liquid mixing pipe connected with the two liquid outlet pipes is fixed at the bottom of the movable block, the bottom of the liquid mixing pipe is provided with a plurality of spray heads.

Preferably, the fire alarm further comprises a controller installed on the installation frame, the controller is electrically connected with the fire alarm, the motor and the electromagnetic three-way valve, and the controller is further used for controlling the on-off of the pair of conductive plate circuits.

Preferably, one side of the supporting plate, which faces the experiment table, is provided with a cabinet body for placing various experimental materials.

Preferably, the lateral wall that the backup pad is close to the cleaning zone rotates and is connected with the wind-up roll, it has the felt to wind on the wind-up roll, be equipped with the pond on the cleaning zone, the preceding lateral wall of backup pad has still coiled asbestos cloth through the pivot.

Preferably, be equipped with the gliding slide from top to bottom that supplies the cabinet body in the backup pad, the slide internal rotation is connected with the second threaded rod, the spiro union has two nuts on the second threaded rod, the nut lateral wall is fixed with the cabinet body back, the output shaft end of motor extends to in the slide and is fixed with the gear wheel, the upper end of second threaded rod is fixed with the elasticity telescopic link, the flexible end of elasticity telescopic link be fixed with gear wheel engagement's pinion, the top of slide inlay be equipped with the electro-magnet with elasticity telescopic link complex, the inner wall of installing frame inlays the conductor rail that is equipped with external power supply line, the lateral wall of movable block inlays be equipped with conductor rail complex conducting block, conducting block and electro-magnet electric connection.

Preferably, the elastic telescopic rod comprises a sleeve and a moving rod, the moving rod is connected in the sleeve in a vertical sliding mode, an iron block matched with the electromagnet is installed at the top of the moving rod, and an elastic piece is installed at the bottom of the moving rod in an elastic mode.

The utility model has the beneficial effects that:

1. through setting up a plurality of fire alarm, can detect the condition of a fire of great experimental area on the laboratory bench, when the condition of a fire appears in corresponding region, can start through controller control motor, drive fire extinguisher to the regional top of condition of a fire through the movable block, through the automatic pressure handle that pushes down the fire extinguisher of closing mechanism, top-down blowout fire extinguishing agent puts out a fire, and coverage area is wide, and fire control effect is good.

2. When the conflagration appears in the large tracts of land in the experimental area, first threaded rod can drive the movable block at experimental area length within range reciprocating motion, and then drives magnetic piston reciprocating motion in the barrel through the magnetism slider, makes two barrels pump aluminium sulfate and ammonium bicarbonate and foamer respectively, and the pump is gone into again and is mixed in the muddy liquid pipe, produces a large amount of foams and even sprays the experimental area, puts out the conflagration of large tracts of land rapidly.

3. Through setting up the cabinet body, can deposit the experimental material, the distance is more convenient for take, when the conflagration appearing, can drive the cabinet body automatically and move down to backup pad bottom position, keeps away from the conflagration of mesa, avoids the damage of experimental material.

4. The side wall of the supporting plate close to the cleaning area is wound with the felt, when a small fire disaster occurs on the table top, the felt can be pulled out to pass through a water tank of the cleaning area, the felt is soaked through a water faucet, and then the wet felt is covered on the flame to complete fire extinguishing.

5. Through setting up the asbestos cloth, can utilize the asbestos cloth to put out when the clothes catches fire.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a perspective view of the mounting frame of the present invention;

FIG. 5 is a schematic structural view of example 2;

fig. 6 is an enlarged schematic view of the structure at B in fig. 5.

In the figure: 1 experiment table, 2 experiment areas, 3 cleaning areas, 4 supporting plates, 5 mounting frames, 6 fire extinguishers, 7 asbestos cloth, 8 winding rollers, 9 motors, 10 cylinders, 11 bevel gear pairs, 12 and 13 first threaded rods, 14 conductive plates, 15 fire alarms, 16 movable blocks, 17 magnetic pistons, 18 liquid suction pipes, 19 liquid outlet pipes, 20 magnetic sliding blocks, 21 strip-shaped openings, 22 liquid mixing pipes, 23 conductive heads, 24 springs, 25 abutting plates, 26 mounting seats, 27 grooves, 28 conductive rails, 29 electromagnets, 30 pinions, 31 elastic telescopic rods, 32 second threaded rods, 33 large gears, 34 slideways and 35 nuts.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Example 1

Referring to fig. 1-4, a school laboratory safety management device based on the internet of things comprises a laboratory bench 1, a laboratory zone 2 and a cleaning zone 3 are arranged on the laboratory bench 1, a vertically arranged support plate 4 is fixed on one side of the laboratory bench 1, an installation frame 5 arranged along the length direction of the laboratory bench 1 is fixed on the top of the support plate 4, a movable block 16 capable of sliding along the length direction is arranged in the installation frame 5, a fire extinguisher 6 horizontally arranged is installed at the bottom of the movable block 16 through an installation seat 26, an opening and closing mechanism capable of opening and closing the fire extinguisher 6 is installed in the movable block 16, a plurality of fire alarm devices 15 are installed above the laboratory zone 2 at the bottom of the installation frame 5, the plurality of fire alarm devices 15 are used for detecting the fire situation of the corresponding area of the laboratory bench 2, when a small-range fire occurs in the laboratory zone, the movable block 16 drives the fire extinguisher 6 to move above the area where the fire occurs, the fire extinguisher 6 is opened through the opening and closing mechanism, and the fire extinguishing agent is sprayed from top to bottom to cover a fire area for extinguishing fire;

pump liquid mechanism is all installed to the both sides of installing frame 5, and the liquid mixing pipe 22 of being connected with pump liquid mechanism is installed to the bottom of movable block 16, and when 2 conflagrations on a large scale took place in the test area, movable block 16 is reciprocating sliding in installing frame 5, and then will be put out a fire by the even spraying of liquid mixing pipe 22 of fire extinguishing agent of pump liquid mechanism pump income to test area 2 and put out a fire.

The fire alarm 15 is a common smoke alarm, when a fire breaks out in a certain area, the generated smoke rises in the area and is detected by the corresponding smoke alarm, when a threshold is reached, the smoke alarm gives an alarm, and at the moment, the smoke concentration detected by the smoke alarms in other areas is low and cannot reach the threshold, and no alarm is given.

Further, motor 9 is installed to the one end of installing frame 5, the internal rotation of installing frame 5 is connected with first threaded rod 13, movable block 16 and first threaded rod 13 threaded connection, install a pair of bevel gear pair 11 of connecting motor 9 and first threaded rod 13 in the installing frame 5 for give first threaded rod 13 with the power transmission of motor 9, starter motor 9 drives first threaded rod 13 through bevel gear pair 11 and rotates, first threaded rod 13 drives movable block 16 and removes, and then drives fire extinguisher 6 and remove to the regional top of conflagration.

Specifically, the opening and closing mechanism includes spring 24, support plate 25, many pairs of conducting plates 14 and two conducting heads 23, the bottom of movable block 16 is equipped with the recess 27 that supplies fire extinguisher 6's pressure handle to insert, support plate 25 sliding connection is in recess 27, spring 24 elastic connection is between recess 27 inner wall and support plate 25 lateral wall, two conducting heads 23 inlay respectively and establish in the both sides of movable block 16, and respectively with the both ends electric connection of spring 24, many pairs of conducting plates 14 inlay respectively and establish on the relative inner wall of installing frame 5, and with a plurality of fire alarm 15 positions one-to-one, many pairs of conducting plates 14 connect in parallel in external power supply line, after conducting head 23 contact conducting plate 14, can be for spring 24 circular telegram.

Specifically, the liquid pumping mechanism comprises two cylinders 10, a magnetic piston 17 and a magnetic slider 20, the two cylinders 10 are respectively fixed on two sides of the mounting frame 5, the magnetic piston 17 is arranged in the cylinder 10, strip-shaped ports 21 for the magnetic slider 20 to pass through are arranged on two sides of the mounting frame 5, one side of the magnetic slider 20 is fixed on the side wall of the moving block 16, the other side of the magnetic slider is attached to the side wall of the cylinder 10 when moving to the position of the cylinder 10 and magnetically attracts the magnetic piston 17 in the cylinder 10, one end of the cylinder 10 is connected with a liquid suction pipe 18 and a liquid discharge pipe 19, check valves are respectively arranged in the liquid suction pipe 18 and the liquid discharge pipe 19, an electromagnetic three-way valve is arranged at the connection position of the liquid suction pipe 18, a liquid mixing pipe 22 connected with the two liquid discharge pipes 19 is fixed at the bottom of the moving block 16, a plurality of spray heads are arranged at the bottom of the liquid mixing pipe 22, and the check valves enable the liquid suction pipe 18 to suck liquid unidirectionally, the liquid outlet pipe 19 extrudes liquid in one direction.

Furthermore, two guide rods penetrating through the magnetic piston 17 are fixed in the cylinder 10 to ensure the stable movement of the magnetic piston 17.

Furthermore, the fire alarm device further comprises a controller arranged on the installation frame 5, the controller is electrically connected with the fire alarm device 15, the motor 9 and the electromagnetic three-way valve, the controller is also used for controlling the on-off of the circuits of the pair of conductive plates 14, and the controller, the fire alarm device 15, the motor 9 and the control circuit of the electromagnetic three-way valve are conventional control circuits.

Further, one side of the supporting plate 4 facing the experiment table 1 is provided with a cabinet body 12 for placing various experimental materials, and the distance is short, so that the cabinet body is convenient to take and store.

Furthermore, the side wall of the supporting plate 4 close to the cleaning area 3 is rotatably connected with a winding roller 8, a felt is wound on the winding roller 8, a water tank is arranged on the cleaning area 3, asbestos cloth 7 is wound on the front side wall of the supporting plate 4 through a rotating shaft, when a small fire disaster occurs on the table top, the felt can be pulled out to pass through the water tank of the cleaning area, the felt is soaked through a water tap, and then the wet felt covers the flame to complete fire extinguishing; through setting up the asbestos cloth, can utilize the asbestos cloth to put out when the clothes catches fire.

When a fire disaster happens to a certain area of the experimental area 2, the fire alarm 15 above the corresponding area detects the fire disaster, the detected fire disaster signal is sent to the controller, the controller starts the motor 9, the first threaded rod 13 is driven to rotate through the bevel gear pair 11, the first threaded rod 13 drives the movable block 16 to move, and then the fire extinguisher 6 is driven to move to the upper side of the fire disaster area, at the moment, the conductive heads 23 at two sides of the movable block 16 are respectively contacted with the pair of conductive plates 14 at the corresponding positions, the controller controls the circuit of the conductive plates 14 at the position to be closed to supply power to the spring 24, the spring 24 is equivalent to an electrified solenoid when being electrified, each circle of spring is equivalent to annular current, the current direction in each circle of spring is the same, and according to mutual attraction between currents in the same direction, each circle of spring is mutually attracted with the adjacent spring, so that the whole spring 24 can shrink, and then the abutting plate 25 is pulled to move, the pressing handle of the fire extinguisher 6 is pressed down (the safety pin is firstly pulled down by the mounted fire extinguisher 6), the fire extinguishing agent is sprayed from top to bottom and covers a fire area, automatic fire extinguishing is realized, and the fire extinguishing effect is good.

When a plurality of fire alarms 15 detect fire, which indicates that a large area of fire occurs in the experimental area 2, the controller controls the electromagnetic three-way valve to switch, closes the air suction pipe, opens the liquid suction pipes 18, the ends of the two liquid suction pipes 18 are connected with the liquid storage tank, when the moving block 16 moves to the upper part of the experimental area 2, the magnetic sliders 20 on the two sides magnetically attract the magnetic pistons 17 to drive the magnetic pistons 17 to move in the cylinder 10, the controller controls the motor 9 to rotate in the positive and negative directions in the gap, so that the moving block 16 keeps reciprocating movement in the range of the experimental area 2, further drives the magnetic pistons 17 to move in a reciprocating manner, one cylinder 10 pumps aluminum sulfate liquid, the other cylinder pumps ammonium bicarbonate and foaming agent, and pumps the ammonium bicarbonate and the foaming agent into the liquid mixing pipe 22 through the liquid outlet pipe 19 to mix, a large amount of foam is rapidly generated and is sprayed out through a plurality of spray nozzles uniformly to the experimental area 2 along with the reciprocating movement of the moving block 16, quickly extinguish large-area fire. It is noted that the electromagnetic three-way valve allows the suction pipe to communicate with the suction pipe 18 for pumping air during extinguishing of the corresponding fire area, without causing unnecessary use.

Example 2

Referring to fig. 5-6, the difference between this embodiment and embodiment 1 is that a slide 34 for the cabinet 12 to slide up and down is provided in the support plate 4, a second threaded rod 32 is rotatably connected in the slide 34, two nuts 35 are screwed on the second threaded rod 32, the side wall of the nut 35 is fixed to the back of the cabinet 12, the end of the output shaft of the motor 9 extends into the slide 34 and is fixed with a large gear 33, an elastic telescopic rod 31 is fixed to the upper end of the second threaded rod 32, a small gear 30 engaged with the large gear 33 is fixed to the telescopic end of the elastic telescopic rod 31, an electromagnet 29 engaged with the elastic telescopic rod 31 is embedded at the top of the slide 34, a conductive rail 28 externally connected with a power supply line is embedded in the inner wall of the mounting frame 5, a conductive block engaged with the conductive rail 28 is embedded in the side wall of the movable block 16, and the conductive block is electrically connected with the electromagnet 29.

Further, the elastic telescopic rod 31 comprises a sleeve and a moving rod, the moving rod is connected in the sleeve in a vertical sliding mode, an iron block matched with the electromagnet 29 is installed at the top of the moving rod, an elastic part is installed at the bottom of the moving rod in an elastic mode, and the elastic part is a spring.

When a fire occurs and moves above the cleaning area 3 at 16, the motor 9 drives the large gear 33 to rotate, the large gear 33 drives the small gear 30 to rotate rapidly, the elastic telescopic rod 31 drives the second threaded rod 32 to rotate, the nut 35 drives the cabinet body 12 to move downwards and move downwards to the bottom of the supporting plate 4, a fire far away from a table top is avoided, and damage to experimental materials is avoided, when the moving block 16 moves above the experimental area 2, the conductive block is in contact with the conductive rail 28 and moves in the range of the experimental area 2 all the time, so that the electromagnet 29 is powered on to suck the iron block at the telescopic end of the elastic telescopic rod 31, the magnetic attraction force is greater than the elastic force of the elastic piece (the elastic piece is a spring), and the small gear 30 moves upwards to be separated from the large gear 33, so that in the fire extinguishing process, no matter whether the motor 9 rotates forwards or backwards, the cabinet body 12 is always positioned at the bottom and cannot move upwards, when the moving block 16 moves out of the experimental area 2, when the circuit is disconnected, the elastic telescopic rod 31 drives the pinion 30 to reset, and the cabinet body 12 can reset by meshing again.

The using method of the utility model specifically comprises the following steps:

s1, when one fire alarm 15 detects a fire, a small-range fire happens in an experimental area 2, the fire alarm 15 sends a detected fire signal to a controller, the controller sends an instruction to a motor 9, the motor 9 drives a first threaded rod 13 to rotate, and then a moving block 16 is driven to move along the length direction of a mounting frame 5, so that a fire extinguisher 6 moves above a fire area;

s2, after the fire extinguisher 6 moves to the position above a fire area, the conductive heads 23 on the two sides of the moving block 16 are respectively contacted with the pair of conductive plates 14 at the corresponding positions, at the moment, the controller controls the circuit of the pair of conductive plates 14 at the position to be closed, the spring 24 is electrified and contracted, and then the pressing handle of the fire extinguisher 6 is pressed down by pulling the resisting plate 25, and the fire extinguishing agent is sprayed out from top to bottom to extinguish fire;

s3, when a plurality of fire alarms 15 detect a fire, a large-scale fire happens in the experimental area 2, the plurality of fire alarms 15 send detected fire signals to the controller, the controller sends instructions to the motor 9, the motor 9 drives the first threaded rod 13 to rotate forward and backward, the moving block 16 is driven to move in a reciprocating mode along the length direction of the mounting frame 5, the fire extinguisher 6 is driven to move in a reciprocating mode above a fire area, meanwhile, the magnetic sliders 20 on the two sides of the moving block 16 magnetically attract the magnetic piston 17, the magnetic attraction piston 17 is driven to move in the cylinder 10 in a reciprocating mode, one cylinder 10 pumps aluminum sulfate liquid, the other cylinder pumps ammonium bicarbonate and foaming agent, the ammonium bicarbonate and the foaming agent are pumped into the liquid mixing pipe 22 through the liquid outlet pipe 19 to be mixed, a large amount of foam is rapidly generated and sprayed out, and the large-scale rapid fire extinguishment is achieved;

s4, the fire extinguisher 6 moves above the cleaning area 3 along with the moving block 16, the motor 9 simultaneously drives the second threaded rod 32 to rotate, the cabinet body 12 for storing experimental materials is lowered to the lower part of the experimental area 2, and the influence of fire in the experimental area 2 is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. The school laboratory safety management device based on the Internet of things comprises a laboratory bench (1), wherein a laboratory zone (2) and a cleaning zone (3) are arranged on the laboratory bench (1), and is characterized in that a vertically arranged supporting plate (4) is fixed on one side of the laboratory bench (1), a mounting frame (5) arranged along the length direction of the laboratory bench (1) is fixed on the top of the supporting plate (4), a movable block (16) capable of sliding along the length direction is arranged in the mounting frame (5), a fire extinguisher (6) horizontally arranged is installed at the bottom of the movable block (16) through a mounting seat (26), an opening and closing mechanism capable of opening and closing the fire extinguisher (6) is installed in the movable block (16), a plurality of fire alarm devices (15) are installed above the laboratory zone (2) at the bottom of the mounting frame (5), and the fire alarm devices (15) can detect the fire condition of the corresponding region of the laboratory bench (2), when a small-range fire disaster occurs in the experimental area (2), the movable block (16) drives the fire extinguisher (6) to move above a fire disaster area, and the fire extinguisher (6) is opened through the opening and closing mechanism to spray fire extinguishing agent from top to bottom to extinguish the fire;

pump liquid mechanism is all installed to the both sides of installing frame (5), mix liquid pipe (22) of being connected with pump liquid mechanism are installed to the bottom of movable block (16), when taking place conflagration on a large scale in laboratory (2), reciprocating sliding in installing frame (5) movable block (16), and then will be by the even spraying of mixed liquid pipe (22) top-down of fire extinguishing agent of pump liquid mechanism pump income, put out a fire.

2. The school laboratory safety management device based on the internet of things as claimed in claim 1, wherein a motor (9) capable of rotating forward and backward is installed at one end of the installation frame (5), a first threaded rod (13) is connected in the installation frame (5) in a rotating mode, the moving block (16) is in threaded connection with the first threaded rod (13), and a pair of bevel gear pairs (11) for connecting the motor (9) and the first threaded rod (13) is installed in the installation frame (5) and used for transmitting power of the motor (9) to the first threaded rod (13).

3. The school laboratory safety management device based on the internet of things as claimed in claim 1, wherein the opening and closing mechanism comprises a spring (24), a resisting plate (25), a plurality of pairs of conducting plates (14) and two conducting heads (23), the bottom of the moving block (16) is provided with a groove (27) for inserting a pressing handle of the fire extinguisher (6), the resisting plate (25) is slidably connected in the groove (27), the spring (24) is elastically connected between the inner wall of the groove (27) and the side wall of the resisting plate (25), the two conducting heads (23) are respectively embedded on two sides of the moving block (16) and are respectively electrically connected with two ends of the spring (24), the plurality of pairs of conducting plates (14) are respectively embedded on the inner wall opposite to the mounting frame (5) and correspond to the positions of the plurality of fire alarms (15) one by one, and the plurality of pairs of conducting plates (14) are connected in parallel in an external power supply line, when the conductive head (23) contacts the conductive plate (14), the spring (24) can be electrified.

4. The school laboratory safety management device based on the internet of things as claimed in claim 1, wherein the liquid pumping mechanism comprises two cylinders (10), magnetic pistons (17) and magnetic sliders (20), one cylinder (10) can pump aluminum sulfate liquid, the other cylinder can pump ammonium bicarbonate and foaming agent, the two cylinders (10) are respectively fixed on two sides of the mounting frame (5), the magnetic pistons (17) are arranged in the cylinders (10), two guide rods penetrating through the magnetic pistons (17) are fixed in the cylinders (10), strip-shaped openings (21) for the magnetic sliders (20) to penetrate through are arranged on two sides of the mounting frame (5), one side of each magnetic slider (20) is fixed on the side wall of the moving block (16), and the other side of each magnetic slider can be attached to the side wall of the cylinder (10) when moving to the position of the cylinder (10) and is magnetically attracted with the magnetic piston (17) in the cylinder (10), the utility model discloses a liquid mixing device, including barrel (10), pipette (18) and drain pipe (19), the one end of barrel (10) is connected with pipette (18) and drain pipe (19), all install the check valve in pipette (18) and drain pipe (19), the lateral wall of pipette (18) still is connected with the breathing pipe, and the junction installs the electromagnetism three-way valve, the bottom of movable block (16) is fixed with mixes liquid pipe (22) of being connected with two drain pipes (19), the bottom of mixing liquid pipe (22) is equipped with a plurality of shower nozzles.

5. The school laboratory safety management device based on the internet of things of claim 1, further comprising a controller installed on the installation frame (5), wherein the controller is electrically connected with the fire alarm (15), the motor (9) and the electromagnetic three-way valve, and the controller is further used for controlling the on-off of the circuit of the pair of conductive plates (14).

6. The school laboratory safety management device based on the internet of things of claim 1, wherein a cabinet body (12) is arranged on one side of the supporting plate (4) facing the laboratory table (1) and used for placing various experimental materials.

7. The school laboratory safety management device based on the internet of things as claimed in claim 1, wherein the side wall of the supporting plate (4) close to the cleaning area (3) is rotatably connected with a winding roller (8), a felt is wound on the winding roller (8), a water tank is arranged on the cleaning area (3), and asbestos cloth (7) is wound on the front side wall of the supporting plate (4) through a rotating shaft.

8. The school laboratory safety management device based on the internet of things of claim 5, characterized in that, be equipped with in backup pad (4) and supply the cabinet body (12) gliding slide (34) from top to bottom, slide (34) internal rotation is connected with second threaded rod (32), the spiro union has two nuts (35) on second threaded rod (32), nut (35) lateral wall is fixed with the cabinet body (12) back, the output shaft end of motor (9) extends to in slide (34) and is fixed with gear wheel (33), the upper end of second threaded rod (32) is fixed with elasticity telescopic link (31), the flexible end of elasticity telescopic link (31) is fixed with pinion (30) with gear wheel (33) meshing, the top of slide (34) is inlayed and is equipped with electro-magnet (29) with elasticity telescopic link (31) complex, the inner wall of installing frame (5) is inlayed and is equipped with conductor rail (28) of external power supply line, and a conductive block matched with the conductive rail (28) is embedded in the side wall of the moving block (16), and the conductive block is electrically connected with the electromagnet (29).

9. The school laboratory safety management device based on the internet of things of claim 8, wherein the elastic telescopic rod (31) comprises a sleeve and a moving rod, the moving rod is connected in the sleeve in a sliding mode up and down, an iron block matched with the electromagnet (29) is installed at the top of the moving rod, and an elastic piece is installed at the bottom of the moving rod in an elastic mode.

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