CN114843883A - Direct current screen capable of quickly extinguishing fire - Google Patents

Abstract

The invention discloses a direct current screen capable of quickly extinguishing a fire, which relates to a direct current screen capable of quickly extinguishing a fire, and comprises a direct current screen body, air outlet holes and a leakage protector, wherein an electric control input end and an electric control output end of the direct current screen body are connected with the leakage protector, the top of the direct current screen body is connected with an air inlet structure, a filter screen is arranged in the top of the air inlet structure, the top of the air inlet structure is provided with a pressing structure for pressing the filter screen, the bottom of the air inlet structure is connected with an air inlet plugging structure, the lower end of the side wall of the direct current screen body is uniformly provided with the air outlet holes, the direct current screen body is connected with an air outlet plugging structure for plugging the air outlet holes at the inner side of the air outlet holes, the air outlet plugging structure is connected with the air inlet plugging structure, and the air outlet plugging structure is also connected with a quick fire extinguishing structure; through the mode, the fire extinguishing device can perform autonomous fire extinguishing treatment, and damage to electrical equipment elements caused by fire is reduced.

Description

Direct current screen capable of quickly extinguishing fire

Technical Field

The invention relates to the technical field of direct current screens, in particular to a direct current screen capable of quickly extinguishing fire.

Background

The universal name of the direct current screen is an intelligent maintenance-free direct current power supply screen, which is the basis for control and protection of a contemporary power system, and the direct current screen consists of a mating electricity unit, a charging module unit, a voltage reduction silicon chain unit, a direct current feed unit, a power distribution monitoring unit, a monitoring module unit and an insulation monitoring unit.

The electrical components of direct current screen can produce a large amount of heats when using, and the conflagration phenomenon can appear because of these heats in the direct current screen, can't independently put out a fire when current direct current screen breaks out a fire and handles, causes electrical components to damage easily.

Therefore, a direct current panel capable of rapidly extinguishing a fire is proposed to solve the above problems.

Disclosure of Invention

The invention aims to provide a direct current screen capable of rapidly extinguishing fire so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

but direct current screen of putting out a fire fast, including direct current screen body, venthole and earth-leakage protector, the automatically controlled input of direct current screen body and automatically controlled output are connected with earth-leakage protector, direct current screen body top is connected with air inlet structure, be equipped with the filter screen in the air inlet structure top, the air inlet structure top is equipped with the compact structure who is used for the filter screen to compress tightly, the air inlet structure bottom is connected with the shutoff structure that admits air, the venthole has evenly been seted up to direct current screen body lateral wall lower extreme, the direct current screen body is connected with the shutoff structure of giving vent to anger that is used for the venthole shutoff in venthole inboard department, the shutoff structure of giving vent to anger is connected with the shutoff structure that admits air, the shutoff structure of giving vent to anger still is connected with the structure of putting out a fire fast.

Furthermore, the air inlet structure comprises an air inlet cover and fans, the fans are fixed on the air inlet cover at equal intervals through a mounting frame, and the air inlet cover is installed in an air inlet hole in the top of the direct current screen body.

Furthermore, the filter screen is arranged at the inner top of the air inlet cover.

Furthermore, the compressing structure comprises a baffle, a connecting shaft, a lock rod and a first spring, wherein the connecting shaft is fixed at one end of the top of the air inlet cover, the connecting shaft is rotatably connected with one end of the baffle, the top of the other end of the baffle is connected with the first spring, the lock rod is fixed at the top of the first spring, and the other end of the top of the air inlet cover is inserted into the bottom of the lock rod through a jack which is arranged.

Further, the shutoff structure admits air includes steel cable, fixed pulley, U-shaped board, second picture peg, straight hole, fixed roof and second spring, the direct current screen body is fixed with the U-shaped board in the inlet port bottom, the laminating slip has the second picture peg in the U-shaped board, the straight hole has been seted up to U-shaped board and second picture peg equidistant, second picture peg front end is fixed with the second spring, second spring front end is fixed with fixed roof, and fixed roof installs in this internal top of direct current screen, second picture peg rear end is fixed with the steel cable, the fixed pulley is installed in direct current screen body rear inner wall upper end, the steel cable is connected along rotating with the pulley of fixed pulley outward.

Furthermore, when the fan admits air, the straight hole that the U-shaped plate was seted up coincides with the straight hole that the second picture peg was seted up, the solid position of second picture peg removes directly over the straight hole that the U-shaped plate was seted up when admitting air the structure shutoff.

Furthermore, the air outlet blocking structure comprises a first inserting plate, an L-shaped limiting plate, a first inclined hole, a temperature sensor, a smoke sensor, an n-shaped movable plate, a leakage protector, a circuit breaking protector, a limiting sliding sleeve, a limiting sliding block, a C-shaped connecting plate, a push rod, a transverse fixing plate, a fourth spring and a third spring, wherein the limiting sliding sleeve, the transverse fixing plate and the circuit breaking protector are installed on the rear inner wall of the direct current screen body, the third spring is fixed in the limiting sliding sleeve, the limiting sliding block which is attached to the inner wall of the limiting sliding sleeve in a sliding mode is fixed at the front end of the third spring, the push rod which is matched with the circuit breaking protector for use is fixed on the side wall of the limiting sliding block, the fourth spring is fixed at the bottom of the transverse fixing plate, the C-shaped connecting plate is fixed at the bottom of the fourth spring, the push rod is attached to the top of the C-shaped connecting plate in a sliding mode, the n-shaped movable plate is fixed at the top of the C-shaped connecting plate, there is first picture peg n shape fly leaf both ends bottom, first picture peg equidistant first inclined hole of having seted up, first picture peg front and back end and the laminating sliding connection of L shape limiting plate inner wall, L shape limiting plate is installed in direct current screen body inner wall front and back end, circuit breaker protector plug-in strip promotes the separation of push rod and C shape connecting plate after the downrotation, then the solid position of first picture peg plugs up the venthole, temperature-sensing ware and smoke inductor install at this internal top of direct current screen.

Furthermore, the bottom of the steel rope is fixedly connected with the front end of the top of the C-shaped connecting plate.

Further, the structure of putting out a fire fast includes plug bush, outlet duct, carbon dioxide storage jar, support frame, shutoff board and carbon dioxide venthole, the carbon dioxide venthole has been seted up to inner wall behind the direct current screen body, carbon dioxide venthole outer wall laminating sliding connection has the shutoff board, the direct current screen body is fixed with the plug bush at carbon dioxide venthole rear end, lateral wall is fixed with the support frame behind the direct current screen body, it has carbon dioxide storage jar to peg graft in the support frame, carbon dioxide storage jar top is connected with the outlet duct, the outlet duct is given vent to anger and is held to peg graft with the plug bush outer end, and the outlet duct is equipped with the control valve.

Further, the plugging plate is installed at the bottom of the C-shaped connecting plate.

The invention has the beneficial effects that:

1. according to the invention, the lock rod of the pressing structure is pulled upwards to move, then the baffle plate is rotated, the filter screen is taken out and then a new filter screen is placed in the air inlet cover, the baffle plate is rotated along the connecting shaft, the first spring drives the lock rod to move after the baffle plate rotates, the lock rod is inserted into the other end of the top of the air inlet cover through the arranged jack, and the pressing structure is convenient to press and limit the filter screen in the air inlet cover.

2. The fan of the air inlet structure drives air to flow, the air flows into the direct current screen body, a large amount of heat generated in the direct current screen body is driven to carry out rapid cooling treatment, the use of electrical elements is facilitated, and the possibility of fire hazard is reduced.

3. According to the air outlet plugging structure, when a temperature sensor or a smoke sensor senses a fire disaster, a knife switch of a circuit breaker protector pushes a push rod to move, the push rod drives a limiting slide block to move in a limiting slide sleeve, a fourth spring pushes an n-shaped movable plate to move downwards after the push rod is separated from a C-shaped connecting plate, the n-shaped movable plate drives a first plug plate to move downwards along an L-shaped limiting plate, a solid part of the first plug plate plugs an air outlet, the air outlet is conveniently plugged, and air is prevented from entering a direct current screen body from the air outlet.

4. According to the invention, the C-shaped connecting plate drives the steel rope of the air inlet plugging structure to move downwards, the steel rope drives the second inserting plate to move along the U-shaped plate through the fixed pulley, and the solid part of the second inserting plate plugs the straight hole formed in the U-shaped plate, so that air is prevented from entering the direct current screen body from the straight hole of the U-shaped plate, the air is effectively isolated, and oxygen is prevented from entering the direct current screen body.

5. According to the invention, the C-shaped connecting plate drives the blocking plate of the quick fire extinguishing structure to move downwards, the front end of the carbon dioxide air outlet hole is opened after the blocking plate moves downwards, the carbon dioxide gas cylinder air outlet pipe in the carbon dioxide storage tank enters the plug bush, then enters the carbon dioxide air outlet hole and then enters the direct current screen body, and the carbon dioxide gas quickly enters the direct current screen body, so that the quick fire extinguishing in the direct current screen body is facilitated.

6. The invention can carry out autonomous fire extinguishing treatment, and reduce the damage of fire to electric appliance elements.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a right side view of the present invention;

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

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a cross-sectional view of the present invention taken along line C-C of FIG. 2;

FIG. 8 is a cross-sectional view of the present invention taken along line D-D of FIG. 2;

FIG. 9 is a cross-sectional view of the present invention taken along line E-E of FIG. 3;

FIG. 10 is an enlarged view of the structure at F in FIG. 4;

FIG. 11 is an enlarged view of the structure at G of FIG. 5;

FIG. 12 is an enlarged view of the structure at H in FIG. 8;

fig. 13 is an enlarged view of the structure at I in fig. 9.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the direct current screen comprises a direct current screen body 2, an air outlet hole 3, an air inlet cover 4, a filter screen 5, a baffle 6, a plug bush 7, an air outlet pipe 8, a carbon dioxide storage tank 9, a support frame 10, a connecting shaft 11, a first plug board 12, an L-shaped limiting plate 13, a first inclined hole 14, a steel rope 15, a fixed pulley 16, a U-shaped plate 17, a second plug board 18, a fan 19, a straight hole 20, a fixed top board 21, a second spring 22, a temperature sensor 23, a smoke sensor 24, an n-shaped movable board 25, an electric leakage protector 26, a circuit breaker protector 27, a limiting sliding bush 28, a limiting sliding block 29, a C-shaped connecting board 30, a push rod 31, a lock rod 32, a first spring 33, a transverse fixing board 34, a fourth spring 35, a blocking board 36, a carbon dioxide air outlet hole 37 and a third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Example 1

As shown in fig. 1-13, but direct current screen of quick fire extinguishing, including direct current screen body 1, venthole 2 and earth-leakage protector 25, direct current screen body 1 automatically controlled input and automatically controlled output are connected with earth-leakage protector 25, direct current screen body 1 top is connected with air inlet structure, be equipped with filter screen 4 in the air inlet structure top, the air inlet structure top is equipped with the compact structure who is used for filter screen 4 to compress tightly, the air inlet structure bottom is connected with the shutoff structure that admits air, venthole 2 has evenly been seted up to direct current screen body 1 lateral wall lower extreme, direct current screen body 1 is connected with the shutoff structure of giving vent to anger that is used for the shutoff of venthole 2 in 2 inboard departments of venthole, the shutoff structure of giving vent to anger is connected with the shutoff structure of admitting air, the shutoff structure of giving vent to anger still is connected with the quick fire extinguishing structure.

Can carry out autonomous fire extinguishing treatment, and reduce the damage of fire to electric appliance elements.

Example 2

On the basis of embodiment 1, see fig. 1, 2, 3 and 5 and show, the air inlet structure includes air inlet cover 3 and fan 18, and air inlet cover 3 is fixed with fan 18 through the mounting bracket equidistance, and air inlet cover 3 is installed in the air inlet of direct current screen body 1 top, and filter screen 4 is installed in the interior top of air inlet cover 3.

The fan 18 of air inlet structure drives the air and flows, and the air flows to in the direct current screen body 1, drives away the drive of a large amount of heats that produce in the direct current screen body 1 and carries out rapid cooling and handle, does benefit to electrical components's use, reduces the possibility that the conflagration took place.

Example 3

On the basis of embodiment 2, as shown in fig. 1, 2, 3, 4 and 10, the pressing structure includes a baffle 5, a connecting shaft 10, a lock rod 31 and a first spring 32, the connecting shaft 10 is fixed at one end of the top of the air inlet cover 3, the connecting shaft 10 is rotatably connected with one end of the baffle 5, the first spring 32 is connected to the top of the other end of the baffle 5, the lock rod 31 is fixed at the top of the first spring 32, and the other end of the top of the air inlet cover 3 is inserted into the bottom of the lock rod 31 through a formed insertion hole.

Upwards stimulate compact structure's locking lever 31 and remove, rotate baffle 5 again, take out filter screen 4 and place new filter screen 4 again in air inlet housing 3, rotate baffle 5 along connecting axle 10, baffle 5 rotates back first spring 32 and drives locking lever 31 and remove, and locking lever 31 is inserted in the jack of 3 top other ends of air inlet housing through seting up, and compact structure conveniently compresses tightly filter screen 4 spacing in air inlet housing 3.

Example 4

On the basis of embodiment 3, referring to fig. 5, 6, 8 and 11, the air inlet plugging structure includes a steel rope 14, a fixed pulley 15, a U-shaped plate 16, a second insertion plate 17, a straight hole 19, a fixed top plate 20 and a second spring 21, the U-shaped plate 16 is fixed at the bottom of an air inlet of the direct current screen body 1, the second insertion plate 17 is slidably attached in the U-shaped plate 16, the straight hole 19 is formed at an equal interval between the U-shaped plate 16 and the second insertion plate 17, the second spring 21 is fixed at the front end of the second insertion plate 17, the fixed top plate 20 is fixed at the top of the direct current screen body 1, the steel rope 14 is fixed at the rear end of the second insertion plate 17, the fixed pulley 15 is mounted at the upper end of the rear inner wall of the direct current screen body 1, the steel rope 14 is rotatably connected with the outer edge of the pulley of the fixed pulley 15, the straight hole 19 formed in the U-shaped plate 16 coincides with the straight hole 19 formed in the second insertion plate 17 when the fan 18 admits air, and the second insertion plate 17 moves to a solid portion to a position just above the straight hole 19 formed in the U-shaped plate 16 when the air inlet plugging structure.

The C-shaped connecting plate 29 drives the steel rope 14 of the air inlet plugging structure to move downwards, the steel rope 14 drives the second inserting plate 17 to move along the U-shaped plate 16 through the fixed pulley 15, the solid part of the second inserting plate 17 plugs the straight hole 19 formed in the U-shaped plate 16, air is prevented from entering the direct current screen body 1 from the straight hole 19 of the U-shaped plate 16, air is effectively isolated, and oxygen is prevented from entering the direct current screen body 1.

Example 5

On the basis of embodiment 4, referring to fig. 6, 7, 8, 9, 12 and 13, the air outlet blocking structure includes a first inserting plate 11, an L-shaped limiting plate 12, a first inclined hole 13, a temperature sensor 22, a smoke sensor 23, an n-shaped movable plate 24, a leakage protector 25, a circuit breaker 26, a limiting sliding sleeve 27, a limiting slider 28, a C-shaped connecting plate 29, a push rod 30, a transverse fixing plate 33, a fourth spring 34 and a third spring 37, wherein the limiting sliding sleeve 27, the transverse fixing plate 33 and the circuit breaker 26 are mounted on the rear inner wall of the dc screen body 1, the third spring 37 is fixed in the limiting sliding sleeve 27, the limiting slider 28 attached to the inner wall of the limiting sliding sleeve 27 and sliding is fixed at the front end of the third spring 37, the push rod 30 used in cooperation with the circuit breaker 26 is fixed on the side wall of the limiting slider 28, the fourth spring 34 is fixed at the bottom of the transverse fixing plate 33, the C-shaped connecting plate 29 is fixed at the bottom of the fourth spring 34, the push rod 30 is in fit sliding connection with the top in the C-shaped connecting plate 29, the n-shaped movable plate 24 is fixed to the top of the C-shaped connecting plate 29, first inserting plates 11 are arranged at the bottoms of two ends of the n-shaped movable plate 24, first inclined holes 13 are formed in the first inserting plates 11 at equal intervals, the front end and the rear end of each first inserting plate 11 are in fit sliding connection with the inner wall of an L-shaped limiting plate 12, the L-shaped limiting plates 12 are installed at the front end and the rear end of the inner wall of the direct current screen body 1, a knife of the circuit breaker 26 rotates downwards to push the push rod 30 to be separated from the C-shaped connecting plate 29, then the air outlet 2 is blocked by the solid parts of the first inserting plates 11, the temperature sensor 22 and the smoke sensor 23 are installed at the top in the direct current screen body 1, and the bottom of the steel rope 14 is fixedly connected with the front end of the top of the C-shaped connecting plate 29.

When the temperature sensor 22 or the smoke sensor 23 of the air outlet blocking structure senses a fire, the knife of the circuit breaker 26 pushes the push rod 30 to move, the push rod 30 drives the limiting slide block 28 to move in the limiting slide sleeve 27, the fourth spring 34 pushes the n-shaped movable plate 24 to move downwards after the push rod 30 is separated from the C-shaped connecting plate 29, the n-shaped movable plate 24 drives the first plug board 11 to move downwards along the L-shaped limiting plate 12, the solid part of the first plug board 11 blocks the air outlet 2, the air outlet 2 is conveniently blocked, and air is prevented from entering the direct current screen body 1 from the air outlet 2.

Example 6

On the basis of embodiment 5, see fig. 3, 5, 8, 12 and 13 show, the structure of putting out a fire fast includes plug bush 6, outlet duct 7, carbon dioxide storage jar 8, support frame 9, plugging plate 35 and carbon dioxide venthole 36, carbon dioxide venthole 36 has been seted up to 1 rear inner wall of direct current screen body, the laminating sliding connection of 36 outer walls of carbon dioxide venthole has plugging plate 35, direct current screen body 1 is fixed with plug bush 6 at carbon dioxide venthole 36 rear end, direct current screen body 1 rear side wall is fixed with support frame 9, it has carbon dioxide storage jar 8 to peg graft in the support frame 9, carbon dioxide storage jar 8 top is connected with outlet duct 7, outlet duct 7 gives vent to anger the end and pegs graft with 6 outer ends of plug bush, and outlet duct 7 is equipped with the control valve, plugging plate 35 is installed in the department of 29 bottoms of C shape connecting plate.

C shape connecting plate 29 drives the plugging plate 35 downstream of the structure of putting out a fire fast, and the plugging plate 35 is opened carbon dioxide venthole 36 front end after the downstream, and carbon dioxide gas section of thick bamboo outlet duct 7 in the carbon dioxide storage jar 8 gets into plug bush 6 in, gets into carbon dioxide venthole 36 again, and in reentrant direct current screen body 1, carbon dioxide gas enters into direct current screen body 1 fast, does benefit to the conflagration in the direct current screen body 1 and destroys fast.

In actual use: a knife switch of the circuit breaking protector 26 is pushed upwards, a push rod 30 pushes a C-shaped connecting plate 29 to be horizontally supported, the C-shaped connecting plate 29 drives an n-shaped movable plate 24 to move, the n-shaped movable plate 24 drives a first inserting plate 11 to move upwards along an L-shaped limiting plate 12, the first inserting plate 11 drives a first inclined hole 13 to coincide with an air outlet hole 2, the air outlet hole 2 performs normal air exhaust, meanwhile, a second spring 21 drives a second inserting plate 17 to move, the second inserting plate 17 drives a straight hole 19 formed in the second inserting plate 17 and a straight hole 19 formed in a U-shaped plate 16, the straight hole 19 formed in the U-shaped plate 16 performs normal air inlet, a fan 18 of an air inlet structure drives air to flow, the air flows into a direct current screen body 1, a large amount of heat generated in the direct current screen body 1 is driven to perform rapid temperature reduction treatment, the use of electrical components is facilitated, and the possibility of fire occurrence is reduced; when needing to change filter screen 4, the locking lever 31 of upwards pulling compact structure removes, rotates baffle 5 again, takes out filter screen 4 and places new filter screen 4 again in air inlet cover 3, rotates baffle 5 along connecting axle 10, and baffle 5 rotates back first spring 32 and drives locking lever 31 and remove, and locking lever 31 inserts in the jack of 3 top other ends of air inlet cover through seting up, and compact structure conveniently compresses tightly filter screen 4 spacing in air inlet cover 3. When the temperature sensor 22 or the smoke sensor 23 of the air outlet blocking structure senses a fire, the knife of the circuit breaker 26 pushes the push rod 30 to move, the push rod 30 drives the limit slider 28 to move in the limit sliding sleeve 27, the fourth spring 34 pushes the n-shaped movable plate 24 to move downwards after the push rod 30 is separated from the C-shaped connecting plate 29, the n-shaped movable plate 24 drives the first inserting plate 11 to move downwards along the L-shaped limit plate 12, the solid part of the first inserting plate 11 blocks the air outlet 2, so as to block the air outlet 2 and prevent air from entering the dc screen body 1 from the air outlet 2, meanwhile, the C-shaped connecting plate 29 drives the steel rope 14 of the air inlet blocking structure to move downwards, the steel rope 14 drives the second inserting plate 17 to move along the U-shaped plate 16 through the fixed pulley 15, the solid part of the second inserting plate 17 blocks the straight hole 19 formed in the U-shaped plate 16, so as to prevent air from entering the dc screen body 1 from the straight hole 19 of the U-shaped plate 16, the air is effectively isolated, oxygen is prevented from entering the direct current screen body 1, in addition, the C-shaped connecting plate 29 drives the blocking plate 35 of the rapid fire extinguishing structure to move downwards, the front end of the carbon dioxide air outlet hole 36 is opened after the blocking plate 35 moves downwards, the carbon dioxide gas cylinder air outlet pipe 7 in the carbon dioxide storage tank 8 enters the plug bush 6, then enters the carbon dioxide air outlet hole 36 and then enters the direct current screen body 1, and carbon dioxide gas quickly enters the direct current screen body 1, so that the fire in the direct current screen body 1 is favorably and quickly extinguished; can carry out autonomous fire extinguishing treatment, and reduce the damage of fire to electric appliance elements.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. But quick fire extinguishing's direct current screen, including direct current screen body (1), venthole (2) and earth-leakage protector (25), its characterized in that: the direct current screen body (1) automatically controlled input and automatically controlled output are connected with earth-leakage protector (25), direct current screen body (1) top is connected with air inlet structure, be equipped with filter screen (4) in the air inlet structure top, the air inlet structure top is equipped with the compact structure who is used for filter screen (4) to compress tightly, the air inlet structure bottom is connected with the shutoff structure that admits air, venthole (2) have evenly been seted up to direct current screen body (1) lateral wall lower extreme, direct current screen body (1) is connected with the shutoff structure of giving vent to anger that is used for venthole (2) shutoff in venthole (2) inboard department, the shutoff structure of giving vent to anger is connected with the shutoff structure that admits air, the shutoff structure of giving vent to anger still is connected with the structure of putting out a fire fast.

2. A rapid fire suppression dc screen according to claim 1, wherein: the air inlet structure comprises an air inlet cover (3) and a fan (18), the fan (18) is fixed on the air inlet cover (3) at equal intervals through a mounting frame, and the air inlet cover (3) is installed in an air inlet hole in the top of the direct current screen body (1).

3. A rapid fire suppression dc screen according to claim 2, wherein: the filter screen (4) is arranged at the inner top of the air inlet cover (3).

4. A rapid fire suppression dc screen according to claim 3, wherein: the pressing structure comprises a baffle (5), a connecting shaft (10), a locking rod (31) and a first spring (32), wherein the connecting shaft (10) is fixed at one end of the top of the air inlet cover (3), the connecting shaft (10) is rotatably connected with one end of the baffle (5), the top of the other end of the baffle (5) is connected with the first spring (32), the locking rod (31) is fixed at the top of the first spring (32), and the other end of the top of the air inlet cover (3) is inserted into the bottom of the locking rod (31) through an insertion hole formed in the other end of the top of the air inlet cover.

5. A direct current screen that can extinguish fires quickly according to claim 4, wherein: the air inlet plugging structure comprises a steel rope (14), a fixed pulley (15), a U-shaped plate (16), a second inserting plate (17), a straight hole (19), a fixed top plate (20) and a second spring (21), a U-shaped plate (16) is fixed at the bottom of the air inlet of the direct current screen body (1), a second plug board (17) is attached and slid in the U-shaped plate (16), the U-shaped plate (16) and the second inserting plate (17) are provided with straight holes (19) at equal intervals, a second spring (21) is fixed at the front end of the second inserting plate (17), a fixed top plate (20) is fixed at the front end of the second spring (21), and the fixed top plate (20) is arranged at the top in the direct current screen body (1), a steel rope (14) is fixed at the rear end of the second inserting plate (17), the fixed pulley (15) is arranged at the upper end of the rear inner wall of the direct current screen body (1), the steel rope (14) is rotatably connected with the outer edge of the fixed pulley (15).

6. A direct current screen that can extinguish fires quickly according to claim 5, wherein: when fan (18) admit air straight hole (19) that U-shaped plate (16) were seted up coincide with straight hole (19) that second picture peg (17) were seted up, the solid position of second picture peg (17) removes directly over straight hole (19) that U-shaped plate (16) were seted up when the structure of admitting air blocked.

7. A fast extinguishing DC screen according to any of claims 5 to 6, characterized in that: the air outlet blocking structure comprises a first inserting plate (11), an L-shaped limiting plate (12), a first inclined hole (13), a temperature sensor (22), a smoke sensor (23), an n-shaped movable plate (24), a leakage protector (25), a circuit breaker (26), a limiting sliding sleeve (27), a limiting sliding block (28), a C-shaped connecting plate (29), a push rod (30), a transverse fixing plate (33), a fourth spring (34) and a third spring (37), wherein the limiting sliding sleeve (27), the transverse fixing plate (33) and the circuit breaker (26) are installed on the rear inner wall of the direct current screen body (1), the third spring (37) is fixed in the limiting sliding sleeve (27), the limiting sliding block (28) which is attached to the inner wall of the limiting sliding sleeve (27) in a sliding mode is fixed at the front end of the third spring (37), the push rod (30) matched with the circuit breaker (26) is fixed on the side wall of the limiting sliding block (28), the bottom of the transverse fixing plate (33) is fixed with a fourth spring (34), the bottom of the fourth spring (34) is fixed with a C-shaped connecting plate (29), a push rod (30) is attached to the top of the C-shaped connecting plate (29) in a sliding manner, the top of the C-shaped connecting plate (29) is fixed with an n-shaped movable plate (24), the bottoms of the two ends of the n-shaped movable plate (24) are provided with first inserting plates (11), the first inserting plates (11) are equidistantly provided with first inclined holes (13), the front end and the rear end of each first inserting plate (11) are attached to the inner wall of an L-shaped limiting plate (12) in a sliding manner, the L-shaped limiting plates (12) are arranged at the front end and the rear end of the inner wall of the direct current screen body (1), a switch protector (26) downwards rotates to push the push rod (30) to be separated from the C-shaped connecting plate (29), and then the solid part of the first inserting plate (11) plugs the air outlet (2), the temperature sensor (22) and the smoke sensor (23) are mounted at the top in the direct current screen body (1).

8. A direct current screen that can extinguish fires quickly according to claim 7, wherein: the bottom of the steel rope (14) is fixedly connected with the front end of the top of the C-shaped connecting plate (29).

9. A rapid fire suppression dc screen according to claim 8, wherein: quick fire extinguishing structure includes plug bush (6), outlet duct (7), carbon dioxide storage jar (8), support frame (9), shutoff board (35) and carbon dioxide venthole (36), carbon dioxide venthole (36) have been seted up to direct current screen body (1) rear inner wall, carbon dioxide venthole (36) outer wall laminating sliding connection has shutoff board (35), direct current screen body (1) is fixed with plug bush (6) at carbon dioxide venthole (36) rear end, direct current screen body (1) rear side wall is fixed with support frame (9), it has carbon dioxide storage jar (8) to peg graft in support frame (9), carbon dioxide storage jar (8) top is connected with outlet duct (7), outlet duct (7) give vent to anger the end and plug bush (6) outer end is pegged graft, and outlet duct (7) are equipped with the control valve.

10. A rapid fire suppression dc screen according to claim 9, wherein: the plugging plate (35) is arranged at the bottom of the C-shaped connecting plate (29).

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