76results about How to "Improve flameproof performance" patented technology

The invention relates to a land and submerged high-pressure resistant explosion-proof wire outlet device, which comprises a bed plate, wherein the bottom of the bed plate is provided with a flange inside which an outlet hole is formed; a lead wire has a tapered structure; a tapered high-pressure resistant explosion-proof sealing ring is sleeved in the tapered hole; a jointing face between the bedplate and a wire outlet device of a motor is provided with a high-pressure resistant sealing ring and an explosion-proof face; a flange cover is fixed on the upper part of the bed plate; and the part, outside an outlet, of an outgoing line is sleeved with a high pressure sealed hose. The high-pressure resistant explosion-proof wire outlet device has a rational structural design, high sealing properties, high pressure resistance and explosion-proof performance, is quick and convenient to wire, can effectively fulfill the aim of sealing the outgoing line and bear the water pressure of 8MPa without leakage to achieve good sealing effects, and is particularly suitable for use in explosion-proof occasions with high pressure media.

The invention relates to the field of explosive-proof equipment, in particular to a dust backpressure explosive-proof valve. The dust backpressure explosive-proof valve comprises a valve body and a valve disk. An inclined end face is integrally and fixedly installed in the valve body, the valve disk is fixedly connected with a valve disk rocker, a positioning shaft is fixedly arranged at the upper end of the valve disk rocker, a limiting plate is fixedly installed on one side of the inclined end face, and the positioning shaft is connected with a transmission device installed outside the valve body. A valve cover is fixedly connected with the valve body, and a sealing gasket is installed at the position, making contact with the valve body, on the valve cover. A detonation or an explosion occurs on the outlet side of the explosive-proof valve, as the backpressure is increased, air flow flows in the reverse direction, the backpressure valve disk is closed, the pressure wave produced by the explosion will enable the valve disk to be closed to the inclined end face on the inlet side, the explosion is prevented from being transmitted to an upstream pipeline and equipment, and an isolation effect is achieved.

The invention relates to an overhead anti-explosion air conditioner. An air conditioner shell is arranged on a top plate of a cabin and internally and successively provided with an evaporator, a centrifugal fan, a totally closed rotary compressor, an anti-explosion motor, an anti-explosion line control box, an axial fan and a condenser, wherein an air outlet return panel is arranged below the top plate of the cabin; an air outlet of the air outlet return panel is communicated with an air return inlet of the air outlet return panel through an air outlet tube, the centrifugal fan and the evaporator successively; and the cable joints of the evaporator, the condenser, the totally closed rotary compressor, the anti-explosion motor and the anti-explosion electric control box are encapsulated by anti-explosion glue. The anti-explosion air conditioner is reasonable in structural design and high in protection level, can effectively prevent electric spark, arc light or dangerous temperature, avoids combustion or explosion accidents, improves the explosive-proof effect of the air conditioner, ensures the safe use of the air conditioner, and is suitable for oil drilling, chemical engineering and ambient temperature regulation of various occasions with combustible and explosive substances and gas.

The invention relates to the technical field of robots. The invention discloses a quick-release box body of an inspection robot. The box body comprises a box body with an opening in the top and a cover plate covering the opening in the top of the box body, the cover plate is hinged to the box body, transverse partition plates are arranged in a cavity of the box body and divide the box body into aplurality of cavities, all components of the inspection robot are located in the cavities, and the transverse partition plates are hinged to the inner side wall of the box body. The cover plate and the transverse partition plates are hinged to the box body, only the cover plate or the transverse partition plate needs to be turned over during overhaul and maintenance, the cover plate or the transverse partition plate does not need to be completely moved away, time and labor are saved in the operation process, meanwhile, the length of a wire for connecting an element on the cover plate and an element in the box body is shortened, and consumable items are possibly reduced.

A mine under-shaft automatic explosive-suspension device triggered in two directions comprises receiving rod hanging devices, impact wave receiving devices, motion triggering components, transferring rod assemblies, outer-layer sleeve assemblies, air spraying pipe assemblies, middle sleeve assemblies, an outer cover assembly, a pressing sieve assembly, a pressure gauge component and pressure gauge protective cover, a valve needle and inflation cover assembly and a main body hanging device, the rest of the parts except the first two parts form the main body part, the number of each of the first seven parts is two, and the first seven parts are in bilateral symmetry regarding the axial vertical central line of the main body part as the center. The air spraying pipe assemblies are assembled inside axial center holes of the middle sleeve assemblies, are in sliding fit, are located in the center of the main body part, and are in bilateral symmetry regarding the axial vertical central line of the main body part as the center. The motion triggering components adopt safety gaskets. The mine under-shaft automatic explosive-suspension device triggered in the two directions is installed in an mine under-shaft tunnel with gas and coal duct explosion dangers, automatically suppressing an explosion in a bi-direction-triggered and spraying mode when the explosion occurs, and prevents the explosion from expanding and causing a secondary explosion, one set of the automatic explosive-suspension device replaces an original front set and an original reverse set, the cost of equipment is reduced, and installation and coal dust filling are convenient.

The invention relates to the field of a mining power supply technology, and discloses a mining explosion suppression type intelligent integrated power supply apparatus. The integrated power supply apparatus comprises an explosion suppression type feed device and at least one storage battery power supply device connected with the explosion suppression type feed device, wherein the explosion suppression type feed device is also connected with an external underground distribution substation communication device, an external emergency illumination device, an external high-voltage switchgear and an external power supply device. According to the invention, AC or DC power supplies with different voltage grades and for different purposes can be provided, the power supply reliability is high, the power supply quality is good, the backup time is long, and the pressing problems can be well solved that conventional home and abroad coal mine underground backup power supplies are in short supply, or the management is chaotic and complex, the control power supply of an electric facility is unstable, the harmonic wave interference is severe, the voltage bounce is obvious, the backup time of communication equipment is short, and under the condition of power failure of an underground main power supply, accidents may be caused due to incapability of real-time monitoring of underground power supply equipment.

The invention discloses a slider-type safety isolation mechanism based on a hot-melting safety mechanism. The slider-type safety isolation mechanism based on the hot-melting safety mechanism comprisesa body (1), a slider (2), a cover plate (8) and the hot-melting safety mechanism (6). The hot-melting safety mechanism (6) comprises a limiting rod (601) and a hot-melting expansion structure. A sidegroove (202) is formed in the big end face of the slider (2), and the head of a pin pusher (5) is pressed on a steel ball installed in the side groove (202). A second blind hole (204) is formed in the other side of the big end face of the slider (2). The head of the limiting rod (601) sequentially penetrates through the second blind hole (204) and a first step hole (105). Holes used for mountingan initiating explosive device are formed in the body (1), the slider (2) and the cover plate (8), and the hole in the body (1), the hole in the cover plate (8) and the hole in the slider (2) in a released state coincide in the vertical direction. The slider-type safety isolation mechanism based on the hot-melting safety mechanism has a good explosion-proof isolation effect and is compact in structure and high in safety.

The invention relates to a flameproof cable reel and coal mine machinery. The flameproof cable reel includes a cylinder body, a baffle plate and a main shaft; the baffle plate includes a first baffle plate and a second baffle plate, and the first baffle plate and the second The baffles are respectively arranged at both ends of the barrel; the main shaft is set as a partial hollow structure, and the two ends of the main shaft are movably mounted on the first baffle and the second baffle through bearings; the two ends of the main shaft are respectively fixedly installed with left and right supports. seat. The main shaft is movably installed on the first and second stop discs through bearings, and the main shaft is supported by the left support and the right support to realize double support for the main shaft, so that the explosion-proof cable reel is not easy to tilt and the force is even.

The invention discloses a sliding block type insurance isolation device based on an electric pin pulling device. The sliding block type insurance isolation device comprises a body (1), a cover plate (8), a sliding block (2), a pin pushing device (5), the electric pin pulling device (6) and a status indication switch (7), wherein the body (1) is corresponding to a hole in the cover plate (2); a side groove (202) is formed in a large end surface on one side of the sliding block (2); a steel ball (3) is arranged in the side groove (202); the head of the pin pushing device (5) is pressed on the steel ball (3); a second blind hole (204) is formed in a large end surface on the other side of the sliding block (2); a first stepped hole (105) corresponding to the second blind hole (204) is formed in the body (1); a pin head of the electric pin pulling device (6) is stuck in the second blind hole (204) and the first stepped hole (105) in sequence; a hole in the sliding block (2) in the limitingstate is staggered from a hole in the body (1); and after limiting relief, the sliding block (2) is aligned with the body (1). The sliding block type insurance isolation device based on the electric pin pulling device is simple in structure and good in isolation effect.

The invention relates to an overhead explosion-proof air conditioner which comprises a condenser, an evaporator, a motor, a compressor and an explosion-proof line control box which are arranged in an air conditioner shell, wherein the air conditioner shell is arranged on a top plate of an air-condoning cabin; the motor is a biaxial extension explosion-proof motor; a centrifugal fan and an axial fan are respectively and correspondingly connected to the evaporator and the condenser; the centrifugal fan is connected to a shaft head at one end of the biaxial extension explosion-proof motor through a copper volute; and the axial fan is connected to a shaft head at the other end of the biaxial extension explosion-proof motor through a guide wind ring. The air conditioner is simple and compact in structure, flame-retardant, explosion-proof and high in security level.

The invention discloses a miner lamp which comprises a lamp holder component and a power supply box electrically connected with the lamp holder component, wherein the power supply box comprises a box body, a storage battery located in the box body, a charging device and a power generation device partially accommodated in the box body; a step hole is formed in the side wall of the box body; the power generation device comprises an electric generator, a rocking handle rotating shaft and a power generation rocking handle; the electric generator comprises an upper casing and a lower casing which are in plane explosion-proof fit; a through hole is formed in the side wall of the lower casing; a circular bulge communicated with the through hole is formed on the outer wall; one end of the circular bulge abuts against the inner wall of the box body and is communicated with the step hole; a rotating shaft end of the electric generator is accommodated in the circular bulge; the rocking handle rotating shaft penetrates through the step hole, and one end of the rocking handle rotating shaft is connected with a rotating shaft of the electric generator; and the other end of the rocking handle rotating shaft is connected with the power generation rocking handle. The power generation rocking handle is rotated, so that the electric generator generates power, and the storage battery supplies power to the lamp holder component in time; the upper casing, the lower casing and the rotating shaft of the electric generator form a sealed explosion-proof structure, and the circular bulge seals the step hole, so that electric sparks produced in the box body are prevented from floating towards the outside, and the safety of the miner lamp is higher.

The invention relates to a mining scraper conveyer driving control system. The mining scraper conveyer driving control system comprises two sets of branch control systems, wherein one set of branch control system is a main control system which is used for controlling the speed of a driving motor of a scraper conveyor, the other set of branch control system is a slave control system which is used for controlling the moment of a driven motor of the scraper conveyor, the two sets of systems are the main and slave control systems to each other, and each set of branch control system comprises a three-electrical-level PWM rectifier, a super-capacitor set, a three-electrical-level inverter and a wave filter which are connected together in sequence. The mining scraper conveyer driving control system has the advantages that an electric circuit is simple in structure, low in cost, easy to control and high in performance cost ratio, a power electronic technology and an all-digital intelligent technology are utilized, efficient utilization of the motors and electric energy thereof is realized, by means of organic combination with the super-capacitor sets, various special working conditions ofthe scraper conveyor can be realized more effectively, and effective utilization of regenerative energy is realized.