31results about How to "Does not conduct electricity" patented technology

The invention discloses a tool for integrally removing nests. The tool is applied to maintenance operation for power systems and comprises a plurality of hollow insulating bars. Capturing portions are arranged on upper portions of the insulating bars, and control portions for controlling actions of the capturing portions are arranged on lower portions of the insulating bars. Each capturing portion comprises movable claws and a fixed claw which are arranged at the front end of a claw seat, the claw seat is hinged and locked with a support rod by a hinged shaft II, a positioning jaw and a locking nut, the support rod is connected to the upper portion of the corresponding insulating bar, and the movable claws can be opened under the control of stays connected to the lower end of an inner hole of the corresponding insulating bar, can be closed via springs, and are opened when a user holds a grasping handle and a control handle of the corresponding control portion. The tool has the advantages that the user standing on the ground or in a place far away from a nest can integrally take down the nest by the aid of the tool, the tool is simple in structure and convenient to install, detach and operate, the insulating bars and the stays are made of insulating materials and are non-conducting, equipment and load of line patrol personnel cannot be increased, required lengths of the stays can be determined by heights of the assembled insulating bars, and then the stays can be freely knotted according to the required lengths of the stays.

A portable atomizing spray fire extinguisher is composed of a fire extinguishing gun, a unit for supplying high pressure to fire-extinguishing chemical, and transmission tubes for fire-extinguishing chemical and compressed air and connected between the said gun and unit. The said gun has a gun body with two channels, a nozzle part and a switch. It features that the fire-extinguishing chemical is atomized and then sprayed out. Its advantages are high fire-extinguishing efficiency, small size, light weight, and low consumption of fire-extinguishing chemical.

The invention provides a double-fluid jet water mist fire gun belonging to the technical field of firefighting extinguishing apparatus. The fire gun is formed by a fire gun body (1), a gas-liquid supply bag (2), a pressure gas delivering tube (3) and a liquid delivery tube (4), wherein the fire gun body (1) is a steel body in gun shape; a gas incoming opening (11) and a liquid incoming opening (12) are formed side by side in the left and the right below the gun grip, and the gas delivery tube (3) and the liquid delivery tube (4) are connected to the gas-liquid supply bag (2); according to the invention, incipient fire in a spacecraft can be inhibited and extinguished by water mist ejected by the fire gun in the low-gravity environment, so that resource of extinguishing agent can be saved, and the fire gun is convenient to use and is flexible.

The invention discloses a lightning protection device of pole tower base station, and relates to the technical field of base station maintenance equipment. A vertical rod is vertically arranged at a top end of the base station, the vertical rod and a sliding rod both are of hollow shaft structures, a plurality of long grooves are vertically formed in an inner wall of an upper part of the vertical rod, sliding strips are fixedly connected to an outer wall of the sliding rod and are matched with the long grooves in a sliding way, a lifting device is arranged in the support rod, a mobile end of the lifting device is fixedly connected with the bottom of the sliding rod, a thunder conductor is vertically arranged at axes of the support rod and the sliding rod, a lower end of the thunder conductor extends to the top of the base station and is fixedly connected with a top end of the thunder guide body, a bottom end of the thunder guide body extends to ground and is fixedly connected with a grounding device, an upper end of the thunder conductor is fixedly connected with a lightning rod, an upper end of the sliding rod is fixedly connected with a sealing cover, and the lightning rod is inserted to the sealing cover in a sliding way. The lightning rod can be wrapped by the sliding rod under the effect of the lifting device, so that the situation that loss of the lightning rod is generated in an external environment to affect the lightning effect can be prevented.

The invention relates to the technical field of storage devices and particularly discloses a storage device for electro-mechanical products. The device comprises a waist bag, wherein the waist bag comprises a first box, partition boards are fixedly connected in the first box, the partition boards divide the first box into multiple chambers, and a portable power supply is mounted in one chamber; awaistband is fixedly connected with the first box, a second box is arranged on the waist band, a sliding plate is glidingly connected in the second box, multiple through holes are formed in the bottomwall of the second box, the second box is filled with water absorbent resin, and a vertical rod is fixedly connected with the sliding plate; an air bag is fixedly connected onto the waistband, sodiumperoxide solid is placed in the air bag communicated with a water inlet pipe, a solenoid valve and a one-way air valve are mounted on the water inlet pipe, the solenoid valve is electrically connected with the portable power supply, a switch for controlling on and off of the solenoid valve is electrically connected with the solenoid valve, and the switch is connected to the vertical rod. The storage device is portable and convenient to use, and the practicability of the storage device is improved.

The invention relates to the field of lighting lamps and particularly relates to an all-period-luminosity LED lamp tube. The all-period-luminosity LED lamp tube comprises a lamp tube shell, a lamp core and enc covers, wherein the lamp core is mounted in the lamp tube shell, and the end covers are connected to two ends of the lamp tube shell; the lamp tube shell is of a circular pipe shape with two open ends, lamp core fixing brackets for fixing the lamp core are arranged at two ends of the lamp tube shell, a driving circuit assembly is arranged at one end of the lamp tube shell and is connected with one end of the lamp core, and the lamp core is of a prismatic shape; and a plurality of LED chips are uniformly arranged on the surface of a prism, and two ends of the lamp cores are fixed on the lamp core fixing brackets to make the axis of the lamp core coincided with the axis of the lamp tube shell. According to the structure, the LED lamp tube has an all-period-luminosity lighting function and is simple in structure, strong in heat dissipation capacity and long in service life.

The invention discloses an automatic hot-wire work lifting platform and method, and the lifting platform comprises a wire stripper which is used for stripping a coating layer of a main wire lap joint section; a lap joint device which is used for performing lap joint on a branch wire and the main wire lap joint section of which the coating layer is stripped; an operation platform which is used for bearing the wire stripper and the lap joint device; and an insulating lifting column which is mounted between the ground and the bottom surface of the operating platform and is used for adjusting the height of the operating platform. The method comprises the steps of 1, preparing construction; 2, stripping the coating layer of the main wire lap joint section; and 3, lapping the branch wire and the main wire lap joint section of which the coating layer is stripped. According to the present invention, a constructor does not need to carry out manual hot-wire work at high altitude, safety and reliability are achieved, a phenomenon of electric shock is avoided, and the construction efficiency of installation and maintenance of the power grid devices can be improved.

The invention discloses a tool for integrally removing nests. The tool is applied to maintenance operation for power systems and comprises a plurality of hollow insulating bars. Capturing portions are arranged on upper portions of the insulating bars, and control portions for controlling actions of the capturing portions are arranged on lower portions of the insulating bars. Each capturing portion comprises movable claws and a fixed claw which are arranged at the front end of a claw seat, the claw seat is hinged and locked with a support rod by a hinged shaft II, a positioning jaw and a locking nut, the support rod is connected to the upper portion of the corresponding insulating bar, and the movable claws can be opened under the control of stays connected to the lower end of an inner hole of the corresponding insulating bar, can be closed via springs, and are opened when a user holds a grasping handle and a control handle of the corresponding control portion. The tool has the advantages that the user standing on the ground or in a place far away from a nest can integrally take down the nest by the aid of the tool, the tool is simple in structure and convenient to install, detach and operate, the insulating bars and the stays are made of insulating materials and are non-conducting, equipment and load of line patrol personnel cannot be increased, required lengths of the stays can be determined by heights of the assembled insulating bars, and then the stays can be freely knotted according to the required lengths of the stays.

The invention provides a stoking machine provided with an insulation machine. The stoking machine comprises a carriage, a working mechanism hinged at the front end of the carriage to stoke, a bodywork arranged on the carriage, a walking mechanism arranged below the carriage, and a driving cab, a hydraulic system and a cooling system which are arranged on the carriage. The junction joints of the working mechanism and the carriage are connected through insulated connectors; a front panel, a back panel and side panels of the carriage are all insulated baffle plates; and the junction points of the hydraulic system and the carriage are connected with the junction points of the cooling system and the carriage through insulated connectors. Therefore, the risk of electric leakage is eliminated when the working mechanism and the bodywork of the stoking machine provided with the insulation machine contact with the wall of a submerged arc furnace. In addition, the hydraulic system and the cooling system are not conductive, so the safety performance of the stoking machine provided with the insulation machine is further improved.

The embodiment of the invention discloses a magnetic-induction level gauge. The magnetic-induction level gauge is arranged on a side wall of a material bin and comprises a magnetic displacement assembly, a magnetic sensing assembly, wherein the magnetic displacement assembly is used for generating mechanical displacement towards a side wall of the material bin according to a height of a material in the material bin, the magnetic sensing assembly comprises a protection shell, a reluctance chip and a processing module, the reluctance chip and the processing module are arranged in the protectionshell, the protection shell is fixedly arranged on the side wall of the material bin, the reluctance chip is arranged on one side, facing the magnetic displacement assembly, of the processing module,and the magnetic sensing assembly is used for sensing a magnetic field signal of the magnetic displacement assembly and determining the height of the material in the material bin according to the magnetic field signal. In the magnetic-induction level gauge disclosed by the embodiment of the invention, the magnetic displacement assembly generates mechanical displacement according to the height of the material, and the reluctance structure is used for sensing the change of the magnetic field of the magnetic displacement assembly so as to determine the height of the material. Compared with the prior art, the magnetic-induction level gauge has the advantages of low power consumption, high sensitivity, simple structure and low cost and is suitable for solid-liquid material detection.

The invention discloses a spontaneous heating type floor for an exercise room and a pavement method of the spontaneous heating type floor, and belongs to the field of floors. The spontaneous heating type floor for the exercise room comprises a spontaneous heating type floor body, the spontaneous heating type floor body comprises a spontaneous heating board body, a heat conductive type veneer is arranged on the upper side of the spontaneous heating type floor body, and a rapid heating type heat conductive interlayer is arranged between the heat conductive type veneer and the spontaneous heatingtype floor body. Compared with the prior art and compared files, according to the scheme, even if a board body is damaged and generates cracks, water on the board surface permeates into a board, thepermeated water can be absorbed by wet drain filling ropes in the rapid heating type heat conductive interlayer, the wet drain filling ropes are heated and dried by using spontaneous heating of the board body, the board body cannot be further damaged, pure insulating materials are adopted in the rapid heating type heat conductive interlayer, the occurrence rate of electric conduction and electricleakage and the electric leakage potential safety hazards are greatly reduced, in addition, a user can heat floors of an area in which the user is located according to self requirements, and the userexperience is improved.

The invention discloses a buffet furnace. The buffet furnace comprises a furnace body and a furnace cover, wherein the furnace body comprises a support; baffles are arranged at both sides of the support; a holding region and a heating region located below the holding region are arranged on the support; a water storing disc is arranged in the holding region; a serving dish is movably arranged in the water storing disc; a tempered glass heating plate is arranged in the heating region, and is located below and in contact with the water storing disc; the furnace cover is movably connected on the support; the furnace cover corresponds to the baffles in shape. The buffet furnace disclosed by the invention has the characteristics of being simple in machining process, high in safety factor and good in energy-saving effect.

The invention discloses a four-prevention socket, and relates to the field of household appliances. The four-prevention socket comprises a socket body and a cover plate, wherein a guide groove is formed in the cover plate; the socket body is provided with a hardware waterproof cabin; the hardware waterproof cabin is internally provided with hardware which is opposite to the guide groove; a springcopper bush cabin is arranged below the hardware waterproof cabin; a movable copper cylinder is arranged at the bottom of the hardware; the lower end of the moveable copper cylinder goes through the hardware waterproof cabin, and the lower part of the movable copper cylinder is arranged inside a spring copper bush cabin; the spring copper bush cabin is internally provided with a spring, and the spring sleeves the exterior of the movable copper cylinder; a conducting strip opposite to the movable copper cylinder is arranged below the spring copper bush cabin, and the conducting strip and the movable copper cylinder are separated from each other. The four-prevention socket has the beneficial effects that the four-prevention socket can prevent water, electric shocks, fire and thunders, is ofversatility, and is convenient to operate and high in safety.

The invention discloses a telescopic shoe drying device. The telescopic shoe drying device comprises shells, switches, power lines, a plug and air heaters. The telescopic shoe drying device is characterized in that the shells are hollow shells and comprise the first shells and the second shells in sliding connection with the first shells, extending shells of the second shells are sleeved with the first shells, air outlet holes and bamboo charcoal filters are regularly arranged on the first shells and the second shells, ventilation lattice bars are arranged at the positions, corresponding to the air outlet holes and bamboo charcoal filters on the first shells, of the extending shells of the second shells, the air heaters are arranged at the 2 / 3 positions of the connecting ends of the first shells and the second shells, sealing baffles are arranged around the air heaters at the 2 / 3 positions of the connecting ends of the first shells and the second shells, and air inlet holes are formed in the upper surfaces of 1 / 3 positions of the first shells. Through the structural design, the shoe drying device is suitable for shoes of different sizes, smell and humidity inside the shoes are absorbed through the bamboo charcoal filters, the shoes are dried more rapidly, and because the shells are made of plastics, electric conduction will not occur, and the telescopic shoe drying device is safe and light.

A portable atomizing spray fire extinguisher is composed of a fire extinguishing gun, a unit for supplying high pressure to fire-extinguishing chemical, and transmission tubes for fire-extinguishing chemical and compressed air and connected between the said gun and unit. The said gun has a gun body with two channels, a nozzle part and a switch. It features that the fire-extinguishing chemical is atomized and then sprayed out. Its advantages are high fire-extinguishing efficiency, small size, light weight, and low consumption of fire-extinguishing chemical.

The invention relates to a magnetic switch for powering on and off of an autonomous underwater vehicle (AUV). A base is hermetically installed on a machine body of the AUV, an upper cover is in sealedconnection with the base, the two ends of a connecting piece are respectively provided with magnetic pieces and conductive pieces, and an elastic part is arranged between the connecting piece and theupper cover. Grooves for installing a contact or a convex body A are formed in the internal of the base respectively, and the magnetic piece at one end of the connecting piece is attracted and rotated by a bar-shaped magnet positioned outside the upper cover through the magnetic force with the upper cover positioned in between. The connecting piece is driven to rotate between the groove for installing the contact and the groove for installing the convex body A through the bar-shaped magnet. The connecting piece falls into the groove for installing the contact after the bar-shaped magnet is removed, and the conductive pieces contact with the contact to realize closing and connecting of the internal circuit of the machine body, or the connecting piece falls into the groove for installing the convex body A to realize disconnection of the internal circuit. The magnetic switch has the advantages of being simple in structure, convenient for operation, good in sealing performance and small in occupied space, frequent operation and the like can be achieved, and the service lifetime of the magnetic switch and the life of the machine body can be prolonged. The magnetic switch can be widelyapplied to various underwater devices.

The embodiment of the present invention discloses a magnetic induction material level gauge, which is installed on the side wall of the material bin. The magnetic induction material level gauge includes: a magnetic displacement assembly, which is used to move the material to the side wall of the material bin according to the height of the material in the material bin. Generate mechanical displacement; magnetic sensing component, magnetic sensing component includes a protective shell, a magnetoresistive chip and a processing module inside the protective shell, the protective shell is fixed on the side wall of the material bin, and the magnetoresistive chip is located on the side of the processing module On the side facing the magnetic displacement component, the magnetic sensing component is used to sense the magnetic field signal of the magnetic displacement component and determine the height of the material in the material bin according to the magnetic field signal. In the embodiment of the present invention, the magnetic displacement component generates mechanical displacement according to the height of the material, and the magnetoresistive structure senses the change of the magnetic field of the magnetic displacement component to determine the height of the material. Compared with the prior art, the magnetic induction level gauge has the advantages of low power consumption, high sensitivity, simple structure and low cost, and is suitable for detecting solid and liquid materials.

The invention relates to the field of electric control equipment, in particular to a case dehumidification device used in a humid environment. The problem that the electrical equipment is damaged dueto the fact that the case cannot be dehumidified in a humid environment can be solved, automatic or manual dehumidification of the electrical case is achieved, it is guaranteed that air in the case isdry, and the function of the electrical equipment is effectively protected. The case dehumidification device is provided with an air inlet and an air outlet, a filter screen (filter) is arranged at the air inlet, cold air in the atmosphere is sucked in by the fan and heated by a heater, and then hot air with water vapor is sent back to the atmosphere through the air outlet, so that the purpose ofdehumidification is achieved. The dehumidification device is controlled by a humidity switch and / or a temperature switch, an alternating current is automatically selected when the alternating currentexists, a built-in storage battery is automatically selected to supply power when the alternating current does not exist, and uninterrupted dehumidification is achieved. Before the main circuit boardis connected with a power supply, automatic moisture removal or manual moisture removal can be controlled through the PLC, so that circuits and electronic elements in the case are protected from being damaged by moisture.

The invention provides a safe electric connector. The safety electric connector comprises at least one electric connection module used for being connected with an external plug. Each electric connection module comprises: a plurality of insertion cabins, wherein the insertion cabins are arranged in a mutually isolated mode and provided with insertion cabin openings facing the same direction, and the insertion cabin openings of the insertion cabins are arranged to be in the shape matched with pins of the external plug to make a pin of an external plug inserted into the insertion cabin from the insertion cabin opening; and a plurality of power supply connecting ends respectively arranged corresponding to the plurality of insertion cabins. At least one of the multiple insertion cabins is a movable insertion cabin, and the movable insertion cabin integrally moves along with insertion of the insertion pins; and each movable insertion cabin is provided with a movable electric connection end outside the internal space for contacting the pins, and the movable electric connection ends are driven by the movable insertion cabins to approach the corresponding power supply connection ends and finally contact with the corresponding power supply connection ends, so that the movable insertion cabins are electrically connected to the corresponding power supply connection ends. According to the scheme, action parts are simple and reliable, potential safety hazards of electricity utilization are eliminated as much as possible, the service life is longer, and reliability is higher.

The invention relates to an electric heating tube set. The electric heating tube set comprises: an electric heating tube with a tube opening and a pipeline communicated with the tube opening; a filler filled in the pipeline; and a sealing piece for sealing at the pipe opening. a moisture-proof material also arranged between the filling material and the sealing element. According to the electric heating tube set, the moisture-proof material is arranged between the filler and the sealing piece, so that the sealing effect can be achieved in cooperation with the sealing piece, and the filler in the electric heating tube can be prevented from absorbing moisture. Therefore, the electric heating tube set is fast in heat dissipation, high in heat efficiency and not conductive, the potential safety hazard of electric leakage of the electric heating tube set is effectively avoided, and the use stability of the product is improved.

The invention relates to a magnetic switch for powering on and off of an autonomous underwater vehicle (AUV). A base is hermetically installed on a machine body of the AUV, an upper cover is in sealedconnection with the base, the two ends of a connecting piece are respectively provided with magnetic pieces and conductive pieces, and an elastic part is arranged between the connecting piece and theupper cover. Grooves for installing a contact or a convex body A are formed in the internal of the base respectively, and the magnetic piece at one end of the connecting piece is attracted and rotated by a bar-shaped magnet positioned outside the upper cover through the magnetic force with the upper cover positioned in between. The connecting piece is driven to rotate between the groove for installing the contact and the groove for installing the convex body A through the bar-shaped magnet. The connecting piece falls into the groove for installing the contact after the bar-shaped magnet is removed, and the conductive pieces contact with the contact to realize closing and connecting of the internal circuit of the machine body, or the connecting piece falls into the groove for installing the convex body A to realize disconnection of the internal circuit. The magnetic switch has the advantages of being simple in structure, convenient for operation, good in sealing performance and small in occupied space, frequent operation and the like can be achieved, and the service lifetime of the magnetic switch and the life of the machine body can be prolonged. The magnetic switch can be widelyapplied to various underwater devices.

The invention relates to the technical field of electro-tricycle power sources, and discloses a multi-power-source-shared electric tricycle which comprises a tricycle seat box body, and a power supply cooling mechanism and a multi-power-source switching mechanism are arranged in the tricycle seat box body. The power supply cooling mechanism comprises a round hole, a double-head motor, a first motor shaft, a second motor shaft, a blowing fan blade, an exhaust fan blade, a rotating rod, a generator and a battery box body. Round holes are formed in the left end and the right end of the front side of the tricycle seat box body. As a connecting shell, a square hole and a waterproof breathable film are arranged in a battery box body, three batteries can be stacked in the battery box body, the immersion liquid is arranged in the connecting shell, and the waterproof breathable film can be directly attached to the battery body, so that the batteries are cooled, the immersion liquid is not conductive, and even if the immersion liquid leaks, the battery is only soaked in the liquid, so that the use safety of the battery is improved.

The invention discloses a direct-current motor provided with a security insulator. The direct-current motor comprises a housing, a brush carrier located in the housing, and a rear end cover. An insulator is arranged between the rear end cover and the brush carrier, and the insulator, the rear end cover and the brush carrier are fixed through bolts. The insulator is composed of an insulating plate and an insulating upright column. The insulating plate is matted on a brush plate of the brush carrier. The insulating upright column is extended from the insulating plate into the rear end cover. The direct-current motor of the invention has the following advantages that the insulating plate and the insulating upright column of the direct-current motor insulator have an integrated structure, so the insulator not only can be easily fixed in the motor, and but also the insulator is used to isolate the brush carrier from the rear end cover to make the brush carrier from the rear end cover be in electric insulation, so the short-circuit condition between electrodes of the motor will not occur; and the motor insulation performance will not be reduced due to reasons, such as dust accumulation, increased humidity, etc., after long-term use, and at the same time, advantages of simple structure and convenient replacement can be realized.

The invention provides an oil-proof and dragging-resistant coiled control cable. The oil-proof and dragging-resistant coiled control cable comprises a plurality of cable cores twisted together and an outer sheath wrapped on the peripheries of the cable cores, wherein each of the cable cores sequentially comprises a cotton bearing rope, a plurality of insulating cable cores and an inner sheath from the interior to the exterior, and the cable cores are made through positioning the cotton bearing ropes in the centers, arranging the insulating cable cores around the cotton bearing ropes for one circle, twisting the cotton bearing ropes and the insulating cable cores together and tightly wrapping the inner sheaths on the peripheries through extruding; the insulating cable cores are made through winding tinned copper single wire harnesses on cotton support ropes and wrapping insulating layers on the peripheries through extruding. The center and all the layers of the cable are designed according to a dragging-resistant structure, so that the whole cable has excellent dragging-resistant performance, oil-proof performance and winding performance, and meets the connecting use of a control system for mobile electric appliances in a similar environment.

The invention discloses a spontaneous heating type floor for an exercise room and a pavement method of the spontaneous heating type floor, and belongs to the field of floors. The spontaneous heating type floor for the exercise room comprises a spontaneous heating type floor body, the spontaneous heating type floor body comprises a spontaneous heating board body, a heat conductive type veneer is arranged on the upper side of the spontaneous heating type floor body, and a rapid heating type heat conductive interlayer is arranged between the heat conductive type veneer and the spontaneous heatingtype floor body. Compared with the prior art and compared files, according to the scheme, even if a board body is damaged and generates cracks, water on the board surface permeates into a board, thepermeated water can be absorbed by wet drain filling ropes in the rapid heating type heat conductive interlayer, the wet drain filling ropes are heated and dried by using spontaneous heating of the board body, the board body cannot be further damaged, pure insulating materials are adopted in the rapid heating type heat conductive interlayer, the occurrence rate of electric conduction and electricleakage and the electric leakage potential safety hazards are greatly reduced, in addition, a user can heat floors of an area in which the user is located according to self requirements, and the userexperience is improved.

The invention discloses a high-safety oil-immersed transformer that ensures stable and normal sound and temperature. It includes a transformer shell, a support base is installed on the bottom of the transformer shell through bolts, and a sealing top cover is installed on the top of the transformer shell through a connecting block. A support plate is installed under the sealing top cover through bolts, a support column is installed under the support plate through bolts, a compression plate is installed under the support column through bolts, and a circuit integration box is installed on the surface of the compression plate through bolts. A transformer is installed under the pressing plate through bolts, a protective casing is wrapped around the outside of the transformer, a placement plate is welded inside the transformer casing, and a mounting plate is nested on the surface of the transformer casing. The present invention solves the existing oil-immersed transformer problems of poor heat dissipation, high noise during operation, and the risk of short circuit leakage due to internal high temperature by providing heat dissipation plates, heat dissipation filling, air outlets and diversion grooves.

The invention provides a double-fluid jet water mist fire gun belonging to the technical field of firefighting extinguishing apparatus. The fire gun is formed by a fire gun body (1), a gas-liquid supply bag (2), a pressure gas delivering tube (3) and a liquid delivery tube (4), wherein the fire gun body (1) is a steel body in gun shape; a gas incoming opening (11) and a liquid incoming opening (12) are formed side by side in the left and the right below the gun grip, and the gas delivery tube (3) and the liquid delivery tube (4) are connected to the gas-liquid supply bag (2); according to the invention, incipient fire in a spacecraft can be inhibited and extinguished by water mist ejected by the fire gun in the low-gravity environment, so that resource of extinguishing agent can be saved, and the fire gun is convenient to use and is flexible.