45results about How to "Improve blowback effect" patented technology

The invention relates to a low-resistance-drop filtering material and a preparation method thereof, and belongs to the technical field of high temperature flue gas, porous materials and high-flux filtering materials. The material is formed by compounding a metal fibrofelt base material and a metal powder film layer attached to the surface of the metal fibrofelt base material; and the metal powderfilm layer comprises the following raw materials: a Fe-Al series intermetallic compound and/or a NiCrAlFe intermetallic compound. The preparation method of the material comprises the following steps:firstly, mixing the intermetallic compound powder with a glue solution, and fully stirring to obtain metal powder suspension liquid; secondly, spraying the surface with high filtering precision of themetal fibrofelt base material with the metal powder suspension liquid to obtain a sprayed material; and finally, drying the sprayed material and then carrying out sintering treatment to obtain the low-resistance-drop filtering material finally. By the material, the problems that flux is low, resistance drop is high, high temperature resistance and sulfur attack resistance are poor, and the structural mode is single are solved, the thickness of a spraying layer and the filtering precision are controllable, and the cost is low.

The invention relates to a domestic garbage comprehensive processing device. The device comprises a coarse breaking chamber, a removing block chamber, a fine breaking device, a separating chamber, a burning chamber, a backflushing device and a water treatment device. Through the specific setting of each device, the domestic garbage can be comprehensively and harmlessly processed, especially by setting the backflushing device specifically so that the cleaned solid waste can be stratified according to the specific gravity, and then the natural classification, collection and treatment of the recyclable garbage are achieved.

The invention relates to the technical field of waste gas treatment equipment, in particular to a three-chamber regenerative thermal oxidizer (RTO) regenerative combustion furnace with a purging pipeline. The three-chamber RTO regenerative combustion furnace with the purging pipeline comprises a furnace body, a combustion chamber and a first regenerative chamber; the combustion chamber is disposedinside the furnace body; a combustor is disposed at the top of the combustion chamber and is connected with the combustion chamber in an embedded mode; the first regenerative chamber is disposed on the lower portion of one side of the combustion chamber; a second regenerative chamber is disposed in the middle of the lower portion of the combustion chamber; a third regenerative chamber is disposedon the lower portion of the other side of the combustion chamber; supporting legs are disposed at the bottom of the furnace body and connected with the furnace body in a welded mode; and a main fan is disposed on one side of the furnace body. Through the structural improvement, the three-chamber RTO regenerative combustion furnace with the purging pipeline has the advantages that the structural design is reasonable, pipeline layout is in order, an air source is clean, the back blowing effect is good, and the VOC removal rate is high.

The invention relates to a box body of a pure-suction type road sweeper, which is used for sweeping ground surfaces and roads in the environments such as plazas, airfields, cement plants, steel plants, electric power plants, harbors and the like and maintaining cleanliness. The boxy body of the pure-suction type road sweeper has the advantages of large volume, good dust separation effect, good back flushing effect, long filter cylinder service life and the like, and belongs to the technical field of road sweepers.

The invention discloses a filter element blowback device for an automatic sand blasting derusting device, and belongs to the field of pipeline derusting. In the filter element blowback device, a blowback rotary wing component comprises a square pipe and a vertical pipe, wherein the vertical pipe is fixed and communicated with middle parts of an upper horizontal pipe and a lower horizontal pipe ofthe square pipe; and a plurality of air outlets are formed in pipe walls of a left vertical straight pipe and a right vertical straight pipe of the square pipe. A bracket comprises a cylindrical support body, an annular support plate and a cover body, wherein the cylindrical support body, the annular support plate and the cover body are arranged from inside to outside; the annular support plate isfixed at the upper part of a filter element; an air inlet pipe penetrates through the top of the cover body; the lower end of the air inlet pipe is rotationally connected with the upper end of the vertical pipe; and the lower end of the vertical pipe rotationally penetrates through the bottom of the filter element. A blasting blowback pipe sequentially penetrates through the side walls of the cover body and the cylindrical support body, and the pipe opening of the blasting blowback pipe is downwards opposite to the open end of the filter element; a sealing plate can axially and slidably sleeve the air inlet pipe to open or close the cylindrical support body; and a blowback air storage tank is connected with a first pulse valve and a second pulse valve, the first pulse valve is connected with the upper end of the air inlet pipe, and the second pulse valve is connected with the pipe opening of the blasting blowback pipe.

A PM particle trap regeneration device comprises a backward-blow gas generation part and a particle trap regeneration heating part. The backward-blow gas generation part comprises a gas storage tank. The input end of the gas storage tank is connected with a gas pump, and the output end of the gas storage tank is connected with the particle trap regeneration heating part through an electromagnetic valve. The particle trap regeneration heating part comprises a heater capable of containing a particle trap inside. The bottom of the heater is connected with the output end of the gas storage tank through a spoiler. A pressure transmitter for collecting gas pressure in the tank is arranged on the gas storage tank. A thermal coupler for detecting the heating temperature is installed in the heater. The pressure transmitter and the thermal coupler are connected with an external controller. The controller outputs signals to control the electromagnetic valve to be opened and closed. The temperature is monitored in the whole process through the thermal coupler; when the combustion time is long enough and the gas pressure of the gas storage tank meets the requirements, the electromagnetic valve is automatically opened, the pressure gas is released for backward blowing, operation is easy and convenient, and the combustion of the particle trap is more accurately controlled.

The invention belongs to the technical field of gas turbines, discloses an efficient air inlet apparatus used for gas-turbine air purification, and aims at solving the problem that the filter efficiency is low because a part of a filter layer in a conventional filter cylinder is not fully utilized. The efficient air inlet apparatus comprises an air inlet chamber, a filter cylinder, a back blowing chamber and a back blowing system; the filter cylinder comprises a filter cylinder frame composed of an outer metal net layer and an inner metal net layer, and the outer metal net layer and the inner metal net layer form the cylindrical filter cylinder frame surrounded on three sides a filtering layer is arranged between the outer metal net layer and the inner metal net layer; one end of the cylinder filter frame is provided with a seal end cover, and the seal end cover is provided with a breather pipe communicated with the interior of the filer cylinder frame; one end of the breather pipe penetrates through the seal end cover and stretched into the cylinder filter frame, and the bottom end of the breather pipe is connected with an air distribution disk; the bottom side and the lateral side of the air distribution disk are both provided with air distribution ports communicated with the breather pipe; and the side wall of the breather pipe is provided with an air dividing port.

The invention relates to a coal tar filtering device and method. The device comprises at least one can-type filter, wherein the can-type filter is internally divided into an after-filtration residual oil collecting chamber, a filter liquor collecting chamber and a filtering chamber from top to bottom; a residual oil leading-out tube plate is arranged between the after-filtration residual oil collecting chamber and the filter liquor collecting chamber; a residual oil leading-out tube is arranged above the residual oil leading-out tube plate, an after-filtration residual oil guide tube is arranged in the filter liquor collecting chamber, an upper filter element fixing plate is arranged between the filter liquor collecting chamber and the filtering chamber, and filter elements and a raw oil distributor as well as a lower filter element fixing plate are arranged in the filtering chamber; the lower filter element fixing plate is connected with the upper filter element fixing plate by a connecting rod, and the upper and lower ends of the filter elements are fixed on the upper filter element fixing plate and the lower filter element fixing plate respectively. According to the invention, the sump oil quantity can be greatly reduced, the filtering precision of the device is improved, the equipment runs stably, the filtering method is relatively simple, the coal tar recovery rate is high, environmental pollution is less, the filtering efficiency is high, and the coal tar filtering device and method are suitable for industrialized application.

The invention provides a road sweeper carriage with a single-cabin structure, which omits an independent passage of a filtering dust room. The invention has the advantages of large carriage volume, good dust separation effect, good back-flushing effect, long service life of a filter cylinder and the like and also improves the service performance of the road sweeper.

The invention relates to the technical field of metal powder processing, in particular to a quantitative feeding device for metal powder processing, which comprises a stock bin mounted on a bottom plate and further comprises a feeding pipe arranged below the stock bin, an air pump is arranged at one end of the feeding pipe, a conveying pipe is arranged at the other end of the feeding pipe, and one end, far away from the feeding pipe, of the conveying pipe is connected with an arc-shaped pipe. A feeding cavity is formed in the end, away from the conveying pipe, of the arc-shaped pipe and comprises an inner wall and an outer wall, a gap is formed between the inner wall and the outer wall and used for installing an external expansion connector, an external expansion cavity is formed in the outer wall of the feeding cavity and penetrates through the outer wall of the feeding cavity to be connected with the external expansion connector in a penetrating mode, and the inner wall of the feeding cavity is of a smooth flexible shrinkage film structure. The shrink film, the external expansion connector and the external expansion cavity jointly form a closed space, a piston and a pushing mechanism connected with the piston are arranged in the external expansion cavity, metal powder can be prevented from being blocked in the feeding cavity, and quantitative feeding can be achieved so that it can be guaranteed that the amount of the metal powder in a pressed blank is within a reasonable range.

The invention discloses a reverse blowing component which comprises a pulse valve and a spraying and blowing structure connected with the pulse valve. A venturi tube is oppositely arranged an outlet of the spraying and blowing structure, the spraying and blowing structure comprises a spraying and blowing pipe and a nozzle connected with the spraying and blowing pipe, the spraying and blowing pipe is a heat compensation pipe body, heat compensation of the pipe body can be achieved under the high-temperature reverse blowing condition through the heat compensation pipe body, the spraying and blowing pipe can effectively keep alignment accuracy when the spraying and blowing structure is used, so that the nozzle is easily disassembled and assembled, and the reverse blowing effect of a gas filtering device is better.

The invention discloses an energy-storage backblowing filter and a filtration and filtration-regeneration method thereof. The energy-storage backblowing filter comprises a body, and an original liquid inlet valve, a filtration clear liquid outlet valve and a filter cake outlet valve which are correspondingly connected with the body, wherein a filter screen is arranged inside the body and divides the interior of the energy-storage backblowing filter into an original liquid space and a filtration clear liquid space; a power supply device is connected with the original liquid inlet valve; the original liquid inlet valve and the filter cake outlet valve communicate the original liquid space; the filtration clear liquid outlet valve communicates the filtration clear liquid space; meanwhile, the filter also comprises an air compression energy-storage member which is arranged on and connected with the body; the filter cake outlet valve is opened before filtration so as to naturally fill air into the interior of the energy-storage backblowing filter; the air compression energy-storage member forms an energy-storage space in individual or in cooperation with the body; and the air filled in the interior of the energy-storage backblowing filter undergoes compression and energy storage and is enclosed in the energy-storage space when filtration. The energy-storage backblowing filter provided by the invention has the advantages of simple structure, simple and convenient operation, and low equipment and operation costs.

The invention belongs to the technical field of air conditioners, and particularly relates to a defrosting control method of an air conditioner. The defrosting control method of the air conditioner isapplied to the air conditioner with double fans arranged on an outdoor unit so as to improve the defrosting efficiency of the air conditioner. The method includes the following steps that after the air conditioner enables the defrosting mode, an upper fan and a lower fan are controlled to stop rotation; after the first set time, only the upper fan is controlled to rotate reversely for the secondset time; after the first set time, the lower fan is controlled to rotate reversely for the second set time, and the upper fan is controlled to rotate reversely for the third set time; and after the second set time, only the lower fan is controlled to rotate reversely for the second set time. According to the method, the fans in the corresponding positions are controlled in a matched manner to rotate reversely according to the thawing sequence of frost, so that frost layers are blown off accurately, and the defrosting efficiency of the air conditioner is greatly improved.