阅读说明：本技术 一种校园宿舍消防灭火的新方法和灭火弹发射装置 (Novel method for fire fighting in campus dormitory and fire extinguishing bomb launching device ) 是由 张克胜 方世杰 李晓杰 唐春娟 李亚逊 张伟 吴锐 石雪 李晨 于 2019-10-08 设计创作，主要内容包括：一种灭火弹发射装置,包括三通,三通的前端安装有机匣,机匣的前端安装有炮管,三通的下端安装有气罐,所述三通、机匣、炮管、气罐相连通,三通上还设有用于监测气罐内气体压力的压力表；三通的后端还设有后堵头、气门以及球阀；所述炮管的内壁上设有导向套,导向套上开设有导向孔；机匣的内部设有击发装置,击发装置包括一端设有击块、另一端设有活塞的击杆,击杆上设有击块的端部穿过导向套上的导向孔并伸入到炮管内；机匣的后端还安装有用于限制活塞位置的阻块；当校园宿舍发生火灾时,使用本发明中的灭火方法和灭火弹发射装置可在第一时间内将火扑灭,实施可靠、有效的灭火救援,解决了校园消防工作的难题。(A fire extinguishing bomb launching device comprises a tee joint, wherein a case is installed at the front end of the tee joint, a gun barrel is installed at the front end of the case, a gas tank is installed at the lower end of the tee joint, the case, the gun barrel and the gas tank are communicated, and a pressure gauge for monitoring gas pressure in the gas tank is further arranged on the tee joint; the rear end of the tee is also provided with a rear plug, an air valve and a ball valve; the inner wall of the gun barrel is provided with a guide sleeve, and a guide hole is formed in the guide sleeve; a percussion device is arranged in the casing, the percussion device comprises a striking rod with a striking block at one end and a piston at the other end, and the end part of the striking rod, which is provided with the striking block, penetrates through a guide hole in the guide sleeve and extends into the gun barrel; the rear end of the casing is also provided with a stop block for limiting the position of the piston; when fire occurs in the campus dormitory, the fire extinguishing method and the fire extinguishing bomb launching device can extinguish the fire in the first time, implement reliable and effective fire extinguishing rescue, and solve the problem of campus fire fighting work.)

1. A fire extinguishing bomb launching device is characterized in that: the gas pressure monitoring device comprises a tee joint (9), wherein a case (11) is installed at the front end of the tee joint (9), a gun tube (14) is installed at the front end of the case (11), a gas tank (10) is installed at the lower end of the tee joint (9), the case (11), the gun tube (14) and the gas tank (10) are communicated, and a pressure gauge (8) for monitoring gas pressure in the gas tank is further arranged on the tee joint (9); the rear end of the tee joint (9) is also provided with a rear plug (5), an air valve (6) and a ball valve (7); a guide sleeve (12) is arranged on the inner wall of the gun barrel (14), and a guide hole is formed in the guide sleeve (12); a firing device is arranged in the casing (11), the firing device comprises a striking rod (1) with a striking block (13) at one end and a piston (3) at the other end, and the end part of the striking rod (1) with the striking block (13) penetrates through a guide hole in the guide sleeve (12) and extends into the gun barrel (14); and a stop block (4) for limiting the position of the piston (3) is further mounted at the rear end of the casing (11).

2. A fire extinguishing bomb launcher according to claim 1, characterised in that: the gun barrel (14) is a PVC pipe with the outer diameter of 110 mm.

3. A fire extinguishing bomb launcher according to claim 1, characterised in that: the striking rod (1) adopts a steel pipe with the outer diameter of phi 12mm and the inner diameter of phi 8 mm.

4. A fire extinguishing bomb launcher according to claim 1, characterised in that: the casing (11) is made of a PVC pipe with the inner diameter of 120mm and the wall thickness of 5 mm.

5. A fire extinguishing bomb launcher according to claim 1, characterised in that: the guide sleeve (12) is also provided with a plurality of air guide holes which take the guide holes as the circle centers and are distributed annularly, so that the air flow in the casing can be conveniently circulated, and the blocking of the air can be prevented.

6. A novel method for fire fighting in campus dormitories specifically comprises the following steps:

s1, when a fire occurs in the campus dormitory, a campus fireman immediately gives an alarm after receiving an alarm call, and goes out to move a campus fire-fighting special vehicle, carries four-wheel hydraulic electric lifting platform, a fire-fighting bomb launching device, a fire-fighting bomb, a portable rotary vane vacuum pump, a portable high-pressure water pump, a power extension line with a plug and a socket, a water pipe, a small gasoline generator and other equipment and equipment to rapidly arrive at the scene:

s2, a campus fireman firstly determines the specific position of a fire dormitory, then fixes a four-wheel hydraulic electric lifting platform to a proper position corresponding to a window of the fire dormitory, and places an extinguishing gun, a portable rotary vane vacuum pump, a portable high-pressure water pump, a power extension line with a plug and a socket (the other end of a power cord is electrically connected with a small gasoline generator on a vehicle), a water pipe and the like on the hydraulic lifting platform, and the fireman lifts to the position with the same height as the fire dormitory along with equipment, connects one end of the water pipe with the portable high-pressure water pump, connects the plugs of the portable rotary vane vacuum pump and the portable high-pressure water pump with the power extension line, puts the power extension line on the ground, and waits for the fireman below to connect the power extension line to the small gasoline generator;

s3, another fireman under the lifting platform is mainly responsible for starting the small gasoline generator, the power extension line plug of the equipment is inserted into the socket of the generator, and the water pipe is butted on the water tap.

S4, closing a ball valve air inlet switch on the fire-extinguishing gun by a fireman on the lifting platform, opening a switch of a portable rotary-vane vacuum pump, connecting an exhaust pipe of the vacuum pump to an air valve of the fire-extinguishing gun, and extracting air in an air tank to form a high-vacuum negative-pressure environment; when the negative pressure value of a pressure gauge on the fire extinguishing bomb launching device reaches a specified value, pulling out the exhaust tube, loading the fire extinguishing bomb from a gun opening, aligning the gun opening of the fire extinguishing bomb to a window of a fire dormitory by a fireman, screwing a ball valve switch handle to open a ball valve, rapidly filling the air tank of the fire extinguishing bomb with external air at the moment to form strong airflow, pushing a piston and a striking rod in a casing, launching the fire extinguishing bomb, and striking glass of a fire bedroom window into a fire room; repeating the step, vacuumizing the gas tank again, filling fire extinguishing bombs, striking out the fire extinguishing bombs, striking the fire extinguishing bombs into a room on fire from a broken window, and instantly exploding the fire extinguishing bombs when the fire extinguishing bombs meet high temperature, wherein the exploded dry powder extinguishes open fire in the room; 1-2 fire extinguishing bombs can be driven according to the size of the fire condition until the indoor open fire is extinguished;

s5, aligning a high-pressure water gun of the portable high-pressure water pump to the window, turning on a power supply, and injecting a high-pressure water column into a room suffering from fire at a high speed to play a role in quickly cooling; if the water source cannot be found on the site, the fire extinguishing bomb can be driven into the room again after a period of time to extinguish the secondary ignition open fire until the fire-fighting vehicle arrives at the site for rescue.

Technical Field

The invention belongs to the field of fire fighting, and particularly relates to a novel method for fire fighting in a campus dormitory and a fire extinguishing bomb launching device.

Background

In recent years, with the development of education institutions of colleges and universities, the campus building scale, the number of students and the electric equipment of the students are greatly increased, and the campus fire hazard is also greatly increased. In recent years, fire accidents frequently occur in campuses across the country, the normal teaching order is seriously disturbed, and the great economic loss and social influence are caused to the country, the society and individuals, so that the campus fire safety is enhanced, the occurrence of campus fires is avoided and reduced, and the campus fire safety teaching aid has very important social significance.

Colleges and universities are crowded places, and student apartments are high-rise areas of campus fires and are places needing important precaution. The reason is that: first, the fire safety awareness of colleges and universities is generally thin, most students have no so-called attitude for holding violation electrical appliances in apartments, and there is a lucky psychology for possible fire hazards. For example, the patch panel load is too heavy; use of high power appliances (electric furnaces, immersion heaters, etc.); the person leaves but the appliance continues to work, etc. And secondly, purchasing the electric appliance with low quality and low price. As college students basically have no economic income and lack social experience, the college students often purchase low-price and low-quality electric products to use in dormitories. Such as poor emergency lights, chargers, hair dryers, warmers, and extension plugs. And thirdly, fire is easily caused in extreme high-temperature weather. During 6 months in summer, the time is the time when extreme high-temperature weather frequently occurs, the resistance of the power grid can be increased along with the rise of the air temperature, so that the heat productivity of the power grid is increased, when the electric wire of the inferior electric appliance is connected into the power grid, the heat of the power grid is conducted to the electric wire of the inferior electric appliance, and the inferior electric appliance is easily heated, smokes and fires, so that fire is caused. If on the scene of a fire, students can find the fire, and can put out the fire dangerous case and alarm in time at the first time, so that the fire can be stopped quickly.

However, the biggest problems encountered in the fire rescue in the campus at present are: when students go on class, appliances used in a dormitory in violation still work and generate spontaneous combustion. Since no personnel are on the site where the fire happens, the fire danger can not be found and processed in time at the first time, and the fire is caused. When the fire truck arrives at the scene, the objects in the dormitory are completely burnt out, which causes great property loss; more seriously, a burning wire or other combustible material ignites an adjacent bedroom, causing a larger fire.

When the situation is met, the hostel personnel in the dormitory can find the situation in time, and can quickly call a fire alarm and inform the campus firefighter to carry out rescue. Since the fire often occurs in several minutes, when the campus firefighters arrive at the site, dense smoke may roll in the corridor of the dormitory building, and even if the campus firefighters wear the fire protection mask and rush into the fire-catching room through the corridor, the fire-catching room has half minute fire extinguishing time. If the time exceeds half a minute, the life safety of rescue workers cannot be guaranteed, and the fire can be increased by opening the door. Therefore, the method for rescuing the campus firefighters by breaking through the corridor is not feasible. The fire alarm telephone is dialed to wait for the rescue of the fire truck, but the fire truck needs a certain time to arrive at the scene when the fire truck gives an alarm, and the best initial rescue time can be missed, so that the fire is more vigorous and more vigorous, and even a larger area of fire is caused.

At present, the prior art for solving the problem is as follows: when fire occurs in the room, the fire extinguishing bomb will be triggered by high temperature and explode to spray dry powder to extinguish the open fire. This can work well, but the actual fire situation is quite complex, and some objects placed in the dormitory are also complex, and when the open fire is extinguished, the indoor heat is not controlled, especially in the relatively closed environment of the dormitory, the heat of the object on fire will continuously rise, and when the temperature reaches the combustion point of the comburent again, the open fire will be produced again, causing a secondary fire, and therefore the hanging fire extinguishing bomb cannot effectively solve all the problems. Therefore, how to implement reliable and effective fire fighting rescue in the first time is the biggest problem of the campus fire fighting work at present.

Disclosure of Invention

The invention aims to provide a novel fire extinguishing method for campus dormitory and a fire extinguishing bomb launching device.

The purpose of the invention is realized by adopting the following technical scheme. The fire extinguishing bomb launching device comprises a tee joint 9, wherein a casing 11 is installed at the front end of the tee joint 9, a gun tube 14 is installed at the front end of the casing 11, a gas tank 10 is installed at the lower end of the tee joint 9, the casing 11, the gun tube 14 and the gas tank 10 are communicated, and a pressure gauge 8 for monitoring gas pressure in the gas tank is further arranged on the tee joint 9; the rear end of the tee joint 9 is also provided with a rear plug 5, an air valve 6 and a ball valve 7; a guide sleeve 12 is arranged on the inner wall of the gun barrel 14, and a guide hole is formed in the guide sleeve 12; a firing device is arranged in the casing 11, the firing device comprises a striking rod 1, one end of the striking rod 1 is provided with a striking block 13, the other end of the striking rod 1 is provided with a piston 3, and the end part of the striking block 13, which is arranged on the striking rod, penetrates through a guide hole in a guide sleeve 12 and extends into a gun barrel 14; the rear end of the casing 11 is also provided with a stop 4 for limiting the position of the piston 3.

Preferably, the barrel 14 is a PVC pipe with an outer diameter of 110 mm.

Preferably, the striking rod 1 is a steel pipe with an outer diameter of 12mm and an inner diameter of 8 mm.

Preferably, the casing 11 is made of a PVC pipe with an inner diameter of 120mm and a wall thickness of 5 mm.

Preferably, the guide sleeve 12 is further provided with a plurality of air guide holes which are annularly distributed around the guide hole and facilitate air flow circulation in the casing to prevent air blockage.

The invention is also realized by adopting the following technical scheme. According to the novel campus dormitory fire fighting method provided by the invention, the method specifically comprises the following steps:

s1, when a fire occurs in the campus dormitory, a campus fireman immediately gives an alarm after receiving an alarm call, and goes out to move a campus fire-fighting special vehicle, carries four-wheel hydraulic electric lifting platform, a fire-fighting bomb launching device, a fire-fighting bomb, a portable rotary vane vacuum pump, a portable high-pressure water pump, a power extension line with a plug and a socket, a water pipe, a small gasoline generator and other equipment and equipment to rapidly arrive at the scene:

s2, a campus fireman firstly determines the specific position of a fire dormitory, then fixes a four-wheel hydraulic electric lifting platform to a proper position corresponding to a window of the fire dormitory, and places an extinguishing gun, a portable rotary vane vacuum pump, a portable high-pressure water pump, a power extension line with a plug and a socket (the other end of a power cord is electrically connected with a small gasoline generator on a vehicle), a water pipe and the like on the hydraulic lifting platform, and the fireman lifts to the position with the same height as the fire dormitory along with equipment, connects one end of the water pipe with the portable high-pressure water pump, connects the plugs of the portable rotary vane vacuum pump and the portable high-pressure water pump with the power extension line, puts the power extension line on the ground, and waits for the fireman below to connect the power extension line to the small gasoline generator;

s3, another fireman under the lifting platform is mainly responsible for starting the small gasoline generator, the power extension line plug of the equipment is inserted into the socket of the generator, and the water pipe is butted on the water tap.

S4, closing a ball valve air inlet switch on the fire-extinguishing gun by a fireman on the lifting platform, opening a switch of a portable rotary-vane vacuum pump, connecting an exhaust pipe of the vacuum pump to an air valve of the fire-extinguishing gun, and extracting air in an air tank to form a high-vacuum negative-pressure environment; when the negative pressure value of a pressure gauge on the fire extinguishing bomb launching device reaches a specified value, pulling out the exhaust tube, loading the fire extinguishing bomb from a gun opening, aligning the gun opening of the fire extinguishing bomb to a window of a fire dormitory by a fireman, screwing a ball valve switch handle to open a ball valve, rapidly filling the air tank of the fire extinguishing bomb with external air at the moment to form strong airflow, pushing a piston and a striking rod in a casing, launching the fire extinguishing bomb, and striking glass of a fire bedroom window into a fire room; repeating the step, vacuumizing the gas tank again, filling fire extinguishing bombs, striking out the fire extinguishing bombs, striking the fire extinguishing bombs into a room on fire from a broken window, and instantly exploding the fire extinguishing bombs when the fire extinguishing bombs meet high temperature, wherein the exploded dry powder extinguishes open fire in the room; 1-2 fire extinguishing bombs can be driven according to the size of the fire condition until the indoor open fire is extinguished;

s5, aligning a high-pressure water gun of the portable high-pressure water pump to the window, turning on a power supply, and injecting a high-pressure water column into a room suffering from fire at a high speed to play a role in quickly cooling; if the water source cannot be found on the site, the fire extinguishing bomb can be driven into the room again after a period of time to extinguish the secondary ignition open fire until the fire-fighting vehicle arrives at the site for rescue.

The novel method for fire fighting in campus dormitories and the fire extinguishing bomb launching device provided by the invention have the following advantages:

1. when a fire disaster occurs in a campus dormitory, the fire extinguishing method can reach a rescue site at the first time, is simple and convenient to operate, and can extinguish the open fire outdoors to prevent the fire from spreading.

2. When a fire disaster occurs in a campus dormitory, the fire extinguishing bomb launching device provided by the embodiment of the invention can extinguish the fire in the first time, so that reliable and effective fire extinguishing rescue is implemented, and the problem of campus fire fighting work is solved.

The foregoing is a summary of the present invention, and for the purpose of making the technical means of the present invention more comprehensible, embodiments thereof are described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a fire extinguishing bomb launching device according to the present invention.

Fig. 2 is an overall schematic view of a fire extinguishing bomb launching device according to the present invention.

[ reference numerals ]

1-impact rod, 2-nut, 3-piston, 4-block, 5-rear plug, 6-valve, 7-ball valve, 8-pressure gauge, 9-three

The method comprises the steps of 10-gas tank, 11-casing, 12-guide sleeve, 13-impact block and 14-gun barrel.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description will be made on a novel fire extinguishing method and a fire extinguishing bomb launching device for campus dormitory according to the present invention with reference to the accompanying drawings and preferred examples.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 2, the fire extinguishing bomb launching device comprises a tee joint 9, a casing 11 is installed at the front end of the tee joint 9, a gun barrel 14 is installed at the front end of the casing 11, an air tank 10 is installed at the lower end of the tee joint 9, the casing 11, the gun barrel 14 and the air tank 10 are communicated, the gun barrel 14 is a PVC pipe with the outer diameter of 110mm, the gun barrel 14 is heated during installation, the inner diameter of the gun barrel 14 is enlarged to 114mm, and then the gun barrel is installed at the front end of the casing 11. The inner wall of the gun barrel 14 is provided with a guide sleeve 12, the center of the guide sleeve 12 is provided with a guide hole and 6 air guide holes which are annularly distributed by taking the guide hole as a circle center, and the air guide holes are used for facilitating the air flow circulation in the case and preventing the air from blocking;

the outer wall of the rear end of the gun barrel 14 is bonded with the inner wall of the front end of the case 11 through PVC glue, the case 11 is made of a PVC pipe with the inner diameter of phi 120mm and the wall thickness of 5mm, a percussion device and a stop block 4 are arranged inside the case 11, the percussion device comprises a hollow striking rod 1, the striking rod 1 is made of a steel pipe with the outer diameter of phi 12mm and the inner diameter of phi 8mm, a striking block 13 is welded at the front end of the striking rod 1, a stud is welded at the rear end of the striking rod 1, 4 nuts 2 are mounted on the stud, a piston 3 is fixed at the rear end of the striking rod 1 through the nuts 2, and the striking rod 1 penetrates through a guide hole in a guide sleeve 12 and enables the end part of the striking rod 1, which is provided with the striking block 13, to extend into the gun barrel 14; the block 4 is arranged at the rear end of the casing 11 and used for limiting the position of the piston 3; the front end of the tee joint 9 is bonded with the rear end of the casing 11 through PVC glue.

A pressure gauge 8 for monitoring the pressure of gas in the gun body is also arranged at the lower end of the side wall at the bottom of the rear end of the tee joint 9; the rear end of the tee joint 9 is also provided with a rear plug 5, an air valve 6 and a ball valve 7.

The fire extinguishing bomb launcher of this embodiment mainly adopts PVC tubular product to form through PVC glue bonding, and the surface hardness and the tensile strength of PVC tubular product are high, and the ageing resistance can be good, and the inside and outside wall of pipeline is smooth to PVC tubular product quality is light, but greatly reduced fire extinguishing bomb launcher's weight, the campus fire fighter of being convenient for carries, reduces physical demands.

When the fire extinguishing bomb is used, the switch of the ball valve 7 is closed, the switch of the portable rotary-vane vacuum pump is opened, the exhaust pipe of the vacuum pump is connected to the air valve 6, air in the air tank 10 is extracted, the inside of the air tank 10 forms a high-vacuum negative pressure environment, when the negative pressure value of the pressure gauge 8 reaches a specified value, the exhaust pipe is pulled down, and the fire extinguishing bomb is loaded into the gun barrel 14 from the muzzle. The fireman aims at the muzzle of the fire extinguishing bomb launcher at the window of a fire catching room, opens the switch of the ball valve 7, at the moment, the external air is filled in the air tank of the fire extinguishing bomb launcher rapidly, strong air flow is formed, the piston 3 in the casing 11 is pushed, the piston 3 transmits the pushing force to the striking block 13 through the striking rod 11, the striking block 13 launches the fire extinguishing bomb to break the window of the room and fall into the room, at the moment, the fire extinguishing bomb encounters high temperature and explodes instantly, and the exploded dry powder can extinguish the indoor open fire.

The invention also provides a novel fire-fighting fire-extinguishing method for the campus dormitory, which comprises the following specific steps:

s1, when a fire occurs in the campus dormitory, a campus fireman immediately gives an alarm after receiving an alarm call, and goes to a campus fire-fighting special vehicle to carry the following equipment and equipment to rapidly arrive at the site:

1) four-wheel hydraulic electric lifting platform (model: GTJZ 0.32-8; lifting the maximum height of 20m, bearing 500kg and applying voltage of 380V);

2) the fire extinguishing bomb launching device in the embodiment;

3) fire extinguishing bomb (brand: AF 0; the model is as follows: TY-1.3; specification: phi 110mm, 0.5 kg);

4) a portable rotary vane vacuum pump (brand: fujiwara; the model is as follows: FUJ-PCV; the weight of the whole machine is as follows: 3.23 kg; vacuum degree: 2 PA);

5) portable high pressure water pump (brand: a seasoning library; the model is as follows: 1508B; range: 6m to 10 m; the type of the water receiving source: others, faucet, self-priming);

6) a power extension cord with a plug and a socket;

7) a water pipe (or hose);

(8) small gasoline generator (brand: Zun Yuan; model: Z8000K).

S2, a campus fireman determines the specific position of a fire dormitory first, then fixes a four-wheel hydraulic electric lifting platform to a proper position corresponding to a fire dormitory window, one fireman places an extinguishing gun, a portable rotary vane vacuum pump, a portable high-pressure water pump, a power extension line with a plug and a socket (the other end of a power cord is electrically connected with a small gasoline generator on a vehicle), a water pipe (or a hose) and the like on the hydraulic lifting platform, the fireman lifts up to the positions with the same height of the fire dormitory along with equipment, one end of the water pipe is connected with the portable high-pressure water pump, the plugs of the portable rotary vane vacuum pump and the portable high-pressure water pump are connected with the power extension line and the power extension line is put down to the ground, and the fireman below waits for connecting the power extension line to the small gasoline generator.

S3, another firefighter below the lift platform is mainly responsible for: starting the small gasoline generator, inserting the power extension line plug of the equipment into the socket of the generator, butting the water pipe on the water tap and the like.

S4, closing a ball valve air inlet switch on the fire-extinguishing gun by a fireman on the lifting platform, opening a switch of a portable rotary-vane vacuum pump, connecting an exhaust pipe of the vacuum pump to an air valve of the fire-extinguishing gun, and extracting air in an air tank to form a high-vacuum negative-pressure environment; when the negative pressure value of a pressure gauge on the fire extinguishing bomb launching device reaches a specified value, pulling down the exhaust tube, loading a fire extinguishing bomb (the diameter is 110mm) from a gun opening, aligning the gun opening of the fire extinguishing bomb to a window of a fire dormitory, screwing a ball valve switch handle to open a ball valve, and then quickly filling the air tank of the fire extinguishing bomb with external air to form strong airflow so as to push a piston and a striking rod in a casing, launching the fire extinguishing bomb and striking glass of a window of a fire bedroom into a room on fire; repeating the step, vacuumizing the gas tank again, filling fire extinguishing bombs, striking out the fire extinguishing bombs, striking the fire extinguishing bombs into a room on fire from a broken window, and instantly exploding the fire extinguishing bombs when the fire extinguishing bombs meet high temperature, wherein the exploded dry powder extinguishes open fire in the room; according to the size of the fire, 1-2 fire extinguishing bombs can be driven in again until the indoor open fire is extinguished.

S5, aligning a high-pressure water gun of the portable high-pressure water pump to the window, turning on a power supply, and injecting a high-pressure water column into a room suffering from fire at a high speed to play a role in quickly cooling; if the water source cannot be found on the site, the fire extinguishing bomb can be driven into the room again after a period of time to extinguish the secondary ignition open fire until the fire-fighting vehicle arrives at the site for rescue.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.