44results about How to "Prevent suck back" patented technology

A maintenance-free moisture absorber comprises a connecting flange, an upper connecting base, a condensation cover and an air inlet and outlet module, moisture absorbing silica gel, a heating device and a control box, wherein the connecting flange, the upper connecting base, the condensation cover and the air inlet and outlet module are sequentially connected; the moisture absorbing silica gel and the heating device are arranged in the condensation cover; and the control box is positioned outside the condensation cover. A breathing tube communicated with the connecting end of the air inlet and outlet module through the moisture absorbing silica gel is arranged in the moisture absorbing silica gel, a condensation cavity is positioned in the upper connecting base, one end of the condensation cavity defined by an air duct is communicated with the top end of the breathing tube, and the other end of the condensation cavity is communicated with a flange opening of the connecting flange. A semiconductor refrigeration piece and a radiator are symmetrically arranged on the outer portion of the air duct, and the semiconductor refrigeration piece is connected to the refrigeration control end of the control box. A method for controlling the maintenance-free moisture absorber comprises collecting color information of the moisture absorbing silica gel in real time; comparing an RGB value at the set comparison moment and position on the day and a set RGB value; if the RGB value at the set comparison moment and position on the day is larger than the set RGB value, setting a night dehydration control mark, first starting to perform refrigeration and then performing heating; after the reduction process of the moisture absorbing silica gel is ended, first stopping heating and then stopping refrigeration; or else resetting.

The invention relates to an engine wind guide cover structure, wherein a cylinder body and a cylinder head of an engine can be wrapped by the wind guide cover. The structure is characterized mainly in that a diversion mechanism is arranged under a covering of the wind guide cover; the diversion mechanism is provided with a body, a lateral gasket, and a bottom gasket; the body is provided with a diversion part, a steering part and a stopping part; cooling wind can be guided by the diversion part towards a spark plug; the steering part is an inclined plane; the cooling wind can be steered by the inclined plane to a cooling plate to cool the cooling plate evenly; the cooling wind can be effectively prevented by the stopping part from being absorbed back by a fan; the diversion mechanism is modularized and located on a cover cap under the wind guide cover; when the standard of the engine has some changes, only the diversion mechanism is needed to have a changed design, thus reducing the manufacture cost of the wind guide cover; through the diversion mechanism, an overlarge space of the wind cover can be eliminated to reduce a turbulence of the cooling wind and to effectively distribute the cooling air current; then the radiating effect of the whole body of the engine can be promoted, thus improving the service efficacy of the engine.

The invention provides a broccoli dehydrating processing method which includes the following steps of selecting materials; cutting off stem and leaves below bud; rinsing by salt water; dicing; sterilizing and killing enzyme by blanching and scalding; blanching and scalding the diced broccoli by 97-99 DEG C hot water for 120-180 seconds; adding soda ash to control the pH value of the blanching and scalding liquid to be in 8.0-9.0; cooling; drying in two stages; selecting again the dried semi-finished product, seeking the foreign bodied out; sealing, packing, and loading in storeroom. The invention conducts effective protective processes during the process course, and the produced broccoli has high quality.

The invention relates to an oil injection device for a milling machine. The oil injection device for the milling machine comprises a supporting seat, wherein the supporting seat is coaxially connectedwith a bearing; the supporting seat is fixedly connected with an oil storage bin; a first oil inlet is formed in the oil storage bin; the supporting seat is rotatably connected with an oil outlet tube; one end of the oil outlet tube communicates with the first oil inlet; the end, which is away from the first oil inlet, of the oil outlet tube communicates with a hollow pressure ball; the hollow pressure ball is connected with a retractable oil storage bag; a first oil outlet is formed in a position where the hollow pressure ball is connected with the oil storage bag; a supporting spring is arranged in the oil storage bag; the supporting seat is fixedly connected with a supporting rod; the oil storage bag is fixedly connected to the supporting rod; a second oil outlet is formed in the bottom of the oil storage bag and is connected with an oil injection tube; an oil nozzle is arranged at the other end of the oil injection tube and is abutted to the bearing; the oil storage bin is connected with an oil inlet tube; the other end of the oil inlet tube is connected with a lubricating oil box; an oil receiving groove is formed below the bearing; and a recycling opening is formed in the bottom of the oil receiving groove. The problems that in traditional lubricating oil injection, labor investment is high, and degree of automation is low are solved.

The invention discloses a screw extruder for plant straw dehydration. The screw extruder comprises a rack, a spiral main shaft, a driving device, a screen barrel, a seal cover, a feeding opening and a discharging opening. The spiral main shaft comprises a feeding straight shaft section, a conveying section and a discharging straight shaft section, wherein the feeding straight shaft section is located below the feeding opening and used for being adapted to the situation when the feeding amount is high in fluctuation; the conveying section is connected with the tail end of the feeding straight shaft section and used for extruding conveyed materials; and the discharging straight shaft section is connected with the tail end of the conveying section and used for forming continuous material stuffing so that dryness of discharged materials can be improved, and part of the discharging straight shaft section is located above the discharging opening. Spiral vanes on the feeding straight shaft section and spiral vanes on the conveying section are unchanged in screw pitch. A backpressure disc structure provided with a backpressure disc is arranged at the discharging opening. The screw extruder is applicable to the pretreatment process for comprehensively utilizing plant straw for producing biomass fuel and suitable for the feeding mode large in fluctuation quantity; dryness of the extruded straw materials reaches 40-55%; and the screw extruder is stable in operation, free of blocking and low in power consumption.

The invention relates to a powerful suction-type sewer scavenger. The powerful suction-type sewer scavenger comprises a suction-type sewer scavenger body, wherein a tank body forming closed space is arranged on a chassis of the suction-type sewer scavenger body and provided with a feeding port I, a vent nozzle and a vacuum pumping port; a solid-liquid separation filter cartridge is arranged in the tank body; one axial end of the solid-liquid separation filter cartridge extends out of the rear end of the tank body; a seal cover is arranged at the axial end, extending out of the tank body, of the solid-liquid separation filter cartridge; an end plate is arranged at the axial end, located in the tank body, of the solid-liquid separation filter cartridge; a shaftless screw body is arranged in the solid-liquid separation filter cartridge; a support end of the shaftless screw body penetrates a via hole formed in the end plate of the solid-liquid separation filter cartridge, extends out of the solid-liquid separation filter cartridge and is connected with a power driving device through a transmission mechanism; a plurality of filter holes and a feeding port II are formed in the body, located in the tank body, of the solid-liquid separation filter cartridge; the feeding port II allowing entry of sewage is communicated with the feeding port I of the tank body; a liquid level control device is arranged in the tank body; a first filter device is communicated between the vacuum pumping port and a first vacuum pump through a pipeline.

The invention discloses seaweed cake making equipment, and belongs to the technical field of seaweed processing equipment. The seaweed cake making equipment comprises a feeding trolley, a vegetable peeling device, a cake formation device, an initial dehydration shaping device, a dehydration device, a loosening device and a reclaiming trolley which are arranged in sequence, and an artificial vegetable taking space is formed between the vegetable peeling device and the cake formation device; the seaweed cake making equipment further comprises a tray conveying rod which is provided with a rack meshed with a driving gear, multiple pulling claws are arranged on the tray conveying rod at intervals and installed on the tray conveying rod in a hinged mode, and a pulling claw limit which corresponds to each pulling claw and limits clockwise rotation of the pulling claw is arranged on the tray conveying rod. Accordingly, the technical problems that in seaweed production, the cake quality is poor, and the production efficiency is low are solved, and the seaweed cake making equipment is widely applied in seaweed processing.

The production method of vegetable core clear soup includes the following steps: preparing raw material, soaking is salt water, cleaning, cutting, scalding, cooling, centrifugal drying, flavouring, standing still, hot air drying, cooling, preservation, selecting, metal detection and packing so as to obtain the invented finished product. It is characterized by that A flavouring procedure: according to weight percentage of rape bolt after centrifugal drying respectively adding 1.5-2% of edible salt and 3-5% of lactose, and stirring and standing still for 20 min.; B. hot air drying procedure is divided into three stages: first stage, temp. is 80-85 deg.C and time is 1-2 hr; second stage, temp. is 60-70 deg.C and time is 1-1.5 hr; and third stage, temp. is 40-50 deg.C and time is 3 hr.; and C. preservation method, dried vegetable core is sealed and placed into low-temp. cold storage at 0-10 deg.C to make storage.

The vessel resporption preventing device for dental unit includes two synchronous non-return valves connected separately to the driving airflow pipe and cooling water flow pipe in the hand set of the dental unit. Each of the valves has one end communicated with atmosphere and the other end connected with the driving airflow pipe and cooling water flow pipe. When the hand set is in operation, two valves are closed; and when the driving airflow and cooling water flow is shut off, the turbine rotates inertially to open the valves for air to be led in, so as to avoid the formation of negative pressure in the driving airflow pipe and cooling water flow pipe and to avoid resporption pollution.

A maintenance-free moisture absorber comprises a connecting flange, an upper connecting base, a condensation cover and an air inlet and outlet module, moisture absorbing silica gel, a heating device and a control box, wherein the connecting flange, the upper connecting base, the condensation cover and the air inlet and outlet module are sequentially connected; the moisture absorbing silica gel and the heating device are arranged in the condensation cover; and the control box is positioned outside the condensation cover. A breathing tube communicated with the connecting end of the air inlet and outlet module through the moisture absorbing silica gel is arranged in the moisture absorbing silica gel, a condensation cavity is positioned in the upper connecting base, one end of the condensation cavity defined by an air duct is communicated with the top end of the breathing tube, and the other end of the condensation cavity is communicated with a flange opening of the connecting flange. A semiconductor refrigeration piece and a radiator are symmetrically arranged on the outer portion of the air duct, and the semiconductor refrigeration piece is connected to the refrigeration control end of the control box. A method for controlling the maintenance-free moisture absorber comprises collecting color information of the moisture absorbing silica gel in real time; comparing an RGB value at the set comparison moment and position on the day and a set RGB value; if the RGB value at the set comparison moment and position on the day is larger than the set RGB value, setting a night dehydration control mark, first starting to perform refrigeration and then performing heating; after the reduction process of the moisture absorbing silica gel is ended, first stopping heating and then stopping refrigeration; or else resetting.

The invention relates to a water squeezing device for fibers or fiber webs or other similar objects, and belongs to the technical field of liquid removal of textile materials. The device comprises twosqueezing rollers and two conveying mechanisms, and one of the two squeezing roller is a driving roller; each conveying mechanism at least comprises one driving roller, a plurality of supporting rollers and guide belts tensioned and mounted on the driving roller and the supporting rollers; a space for the fibers or the fiber webs or other similar objects to pass through is formed between the twoguide belts, the parts, constituting the passage space for the fibers or the fiber webs or other similar objects, of the two guide belts are parallel to each other, and the two squeezing rollers are mounted at the positions, corresponding to the passage space, of the two guide belts respectively. The device is applied to dewatering of the fibers or the fiber webs or other similar objects and has the advantages of being high in dewatering efficiency, high in dewatering speed and the like.

The invention discloses a facial mask, a mask, a mobile terminal and a system. The facial mask comprises a component content sensor used for detecting the content of components contained in the facialmask, and therefore the content is shown in a preset mode. By detecting residual components of the facial mask, the nutrition content absorption conditions of different facial areas of a facial maskuser are inferred, the state of the face is judged, and the time of facial mask wearing is determined, therefore the problems of facial mask texture and personal time of facial mask wearing in the prior art are solved, it can be avoided that the waste is caused due to too short time of facial mask wearing, or moisture is absorbed by the facial mask due to too long time of facial mask wearing, andtherefore the user experience is effectively improved.

The invention discloses a range hood with an odor removal device. The range hood comprises a range hood body comprising an air suction hole, an air duct and an exhaust hole, and is characterized by further comprising a turning cover assembly comprising a turning cover body rotatably connected with the front panel of the range hood and a fume collecting turning cover connected with the turning cover body, wherein the odor removal device is arranged in the turning cover body; an air inlet and a fresh air outlet are formed in one side of the turning cover body; the odor removal device comprises a grease filter net, an odor treatment device and an air exchange device; a fan is arranged in the air exchange device; the odor treatment device is detachable and convenient to clean; when the odor treatment effect of the odor treatment device is poor, a filter net in the odor treatment device can be replaced with a new filter net.

The production method of vegetable core clear soup includes the following steps: preparing raw material, soaking is salt water, cleaning, cutting, scalding, cooling, centrifugal drying, flavouring, standing still, hot air drying, cooling, preservation, selecting, metal detection and packing so as to obtain the invented finished product. It is characterized by that A flavouring procedure: according to weight percentage of rape bolt after centrifugal drying respectively adding 1.5-2% of edible salt and 3-5% of lactose, and stirring and standing still for 20 min.; B. hot air drying procedure is divided into three stages: first stage, temp. is 80-85 deg.C and time is 1-2 hr; second stage, temp. is 60-70 deg.C and time is 1-1.5 hr; and third stage, temp. is 40-50 deg.C and time is 3 hr.; and C. preservation method, dried vegetable core is sealed and placed into low-temp. cold storage at 0-10 deg.C to make storage.

This patent discloses a pasture drying room in the field of animal husbandry, comprising a square roof board, four corners of the roof board are connected with pillars, and the lower ends of the pillars are provided with ventilation plates; The upper plate surface is evenly distributed with small holes penetrating through the cavity, the side of the ventilation plate is provided with through holes penetrating through the cavity, and the through holes are connected with hot air devices; The grass-carrying board is located above the ventilation board, and the grass-carrying board includes a grass-carrying frame that can move horizontally between the pillars. The grass-carrying frame is provided with a mesh-like grass-carrying net for placing grass; the outer wall of the pillar is provided with a stopper Rain device, with dehumidifier on the pillar. The provision of roof roller shutters, rain shielding devices, ventilation panels, hot air devices and dehumidifiers solves the problem of forage grasses in the prior art due to the lack of timely drying in cloudy and rainy days, resulting in mildew, and the inability to dry quickly in sunny days. The problem of massive loss of material.

The invention provides an optimization method for improving photoetching defects caused by water adsorption of a front-layer film in photoetching. The optimization method comprises the following steps of: determining the thickness T of a standard SOC coating needing to be sprayed on a wafer substrate; spraying a first SOC coating with a C1 spraying amount on the wafer substrate; baking the first SOC coating to make the formed first SOC coating possess athickness of T1; carrying out surface treatment on the first SOC coating by utilizing a solvent or oxygen-containing plasma; spraying a second SOC coating with the C2 spraying amount on the first SOC coating; baking the second SOC coating so as to make the formed second SOC coating process a thickness of T2, and T be equal to the sum of T1 and T2; and coating an anti-reflection coating on the second SOC coating, then spin-coating a photoresist coating on the anti-reflection coating, and exposing, developing and etching the photoresist coating through a mask to form a required pattern. According to the method of the invention, the influence on photoetching and etching is reduced. Therefore, the purpose of saving cost is achieved, and the influence on the photoresist defects caused by the adsorption substance of the front-layer film is greatly reduced.

The invention belongs to the technical field of collodion mops, and especially relates to a collodion mop. The collodion mop comprises a mop rod; a mop head is movably arranged at the end part of themop rod; a cotton head is arranged on the mop head; a water squeezing rack is sleeved on the mop rod; the water squeezing rack can move along the mop rod; the mop head can be rotated to the length direction of the cotton head and is substantially parallel to the mop rod and aligned with the water squeezing rack; the cotton head is movably arranged on the mop head and the cotton head / partial cottonhead can laterally move in the mop head; and when water is squeezed, the water squeezing rack slides up and down along the length direction of the cotton head and squeezes the cotton head so as to achieve flattening or release of the cotton head in the length direction of the cotton head in the mop head, and the cotton head is completely detached from the water squeezing device when mopping the floor. The collodion mop provided by the invention is simple and stable in structure, capable of cleaning the surface of the cotton head and good in water squeezing effect.

The invention relates to a back-suction preventive bladder irrigator, comprising an irrigating tube, an irrigating liquid balloon and a rubber balloon. The rubber balloon is provided with protrusions formed integrally with the rubber balloon. The rubber balloon is provided with a rubber connecting tube. The irrigating liquid balloon is provided with a first connecting tube and a second connecting tube. The first connecting tube is connected with the irrigating tube. One end of the irrigating tube is connected with a silicone valve, and the other end thereof is connected with an irrigating connector. The silicone valve is funnel shaped, a large end face of the silicone valve is connected with the irrigating tube, and a small end face of the silicone valve is disposed in the first connecting tube. The silicone valve is composed of a valve flap which is provided with a strainer. The strainer is inwardly concave or outwardly convex. The back-suction preventive bladder irrigator has the advantages that the cost is low, the irrigator is handy, disposable and tolerant to high-temperature sterilizing and is suitable for fully irrigating the bladder, prostate or bladder tissues are avoided being sucked back into the bladder, the surgical time is shortened, surgical risk is decreased, and the irrigator has a promising clinical application prospect.

The invention relates to an engine wind guide cover structure, wherein a cylinder body and a cylinder head of an engine can be wrapped by the wind guide cover. The structure is characterized mainly in that a diversion mechanism is arranged under a covering of the wind guide cover; the diversion mechanism is provided with a body, a lateral gasket, and a bottom gasket; the body is provided with a diversion part, a steering part and a stopping part; cooling wind can be guided by the diversion part towards a spark plug; the steering part is an inclined plane; the cooling wind can be steered by the inclined plane to a cooling plate to cool the cooling plate evenly; the cooling wind can be effectively prevented by the stopping part from being absorbed back by a fan; the diversion mechanism is modularized and located on a cover cap under the wind guide cover; when the standard of the engine has some changes, only the diversion mechanism is needed to have a changed design, thus reducing the manufacture cost of the wind guide cover; through the diversion mechanism, an overlarge space of the wind cover can be eliminated to reduce a turbulence of the cooling wind and to effectively distribute the cooling air current; then the radiating effect of the whole body of the engine can be promoted, thus improving the service efficacy of the engine.

The invention discloses a screw extruder for dehydrating plant straw, which includes: a frame, a screw spindle, a driving device, a screen cylinder, a sealing cover, a feed port and a discharge port; wherein the screw spindle includes: located at the inlet The feed straight-axis section below the feed port is used to adapt to large fluctuations in feed volume; the conveyor section connected to the end of the feed straight-axis section is used to squeeze and transport materials; the conveyor section connected to the end is used to form a continuous material plug In order to improve the dryness of the discharged material, a part of the straight-axis section of the discharge is located above the discharge port; among them, the pitch of the spiral blades on the straight-axis section of the feed and the conveying section remains unchanged; among them, the discharge port is provided with a back The back pressure plate structure of the pressure plate. The screw extruder of the present invention is suitable for the pretreatment process of comprehensive utilization of plant straw to produce biomass fuel, and is suitable for feeding methods with large fluctuations. The dryness of the extruded straw material reaches 40-55%, and the operation is stable and non-clogging. , low power consumption.

The invention provides a dustproof protective cover capable of being mounted on a unit brake cylinder. The dustproof protective cover comprises a housing, wherein a drainage hole is arranged at the side, near the ground, of the housing. Through the arrangement of the drainage hole, the dustproof protective cover disclosed by the invention can discharge the accumulated water in the dustproof protective cover in time, and prevent the accumulated water from entering core components of the unit brake cylinder resulting in internal damage.

The invention discloses a direct current metering device for blind signal separation of a polymer hydrogen fuel cell, which belongs to the field of hydrogen fuel motors. A direct current metering device for blind signal separation of polymer hydrogen fuel cells, including a metering device and a hydrogen fuel cell, the rear side wall of the metering device is fixedly connected with a rectangular casing, and the air inlet and outlet of the rectangular casing are The dust-proof nets are fixedly installed, and the heat dissipation fan blades are rotatably installed in the air outlet through the bracket. The first rotating rod is rotatably connected between the inner walls of the rectangular cover, and the rotating shafts of the plurality of heat dissipation fan blades are connected with the first rotating shaft. A rotating rod is meshed and connected by two first gears, a motor is fixedly installed on the side wall of the rectangular cover, and a self-cleaning mechanism that cooperates with the dust-proof net is provided in the air outlet; the hydrogen fuel in the present invention The metering device used for the battery can effectively dissipate heat, so that the working accuracy is guaranteed, and the dust-proof net used also has a self-cleaning function.

The invention discloses a dedusting device for cement plants. The dedusting device can radically remove dusts, and the obstruction of pipeline is avoided. The dedusting device comprises a first air intake bucket, a second air intake bucket, an air suction pipe, a gas discharge pipe, an air supply pipe, a primary vacuum pump, a secondary vacuum pump, a first filter, and a second filter. One end of the air suction pipe is connected to the first air intake bucket, the other end is connected to the first filter; the air suction pipe is provided with a first air inlet control valve; the air outlet end of the first filter is connected to the primary vacuum pump and the secondary vacuum pump, the cavity of the first vacuum pump is larger than the cavity of the secondary vacuum pump; the air outlet end of the secondary vacuum pump is connected to the second filter through the gas discharge pipe, a second control valve is arranged on the gas discharge pipe; a unidirectional pipe is arranged between the second control valve and the second filter; one end of the unidirectional pipe is connected to a position between the primary vacuum pump and the second vacuum pump so as to form a passage between the primary vacuum pump and the second filter; one end of the air supply pipe is connected to the air outlet end of the secondary vacuum pump, the other end is connected to a position between the first control valve and the first air intake bucket, and a third control valve is arranged on the air supply pipe.

The invention discloses a health maintenance device, which comprises a first jar body and a second jar body, wherein the first jar body and the second jar body are vertically arranged and are connected through a middle plate; the middle plate is provided with a first through hole; a gas pump is arranged in the first jar body; the gas pump used for evacuating gas in the second jar body communicateswith the first through hole; a heating plate (i.e. an element plate) and a medicine bag containing cavity are arranged in the second jar body; the heating plate (i.e. the element plate) and the medicine bag containing cavity are arranged in sequence from top to bottom; the bottom of the second jar body is opened; the top of the first jar body is provided with a control device; and the control device is used for controlling opening and closing of the heating plate and the gas pump. The health maintenance device has the beneficial effects that the health maintenance device combines cupping andmedicine hot fumigation into a whole, has a simple structure and is convenient to operate. Since the health maintenance device adopts a material of purple sands, the health maintenance device has goodthermal insulation performance, a moderate body feeling and low heat conduction speed and is unlikely to scald a user.

The invention relates to a solid-liquid separation type household garbage treatment device. The solid-liquid separation type household garbage treatment device comprises a box body, a crushing device, a rolling device and a filter screen; the crushing device consists of a pair of crushing rollers and a crushing roller driving mechanism; a feeding hole is formed in the top of the box body, the pair of crushing rollers are arranged in the box body below the feeding hole, and the crushing roller driving mechanism is used for driving the two crushing rollers to rotate relatively; a liquid outlet is formed in the bottom of the box body, and a filter screen is arranged in the box body above the liquid outlet; the rolling device consists of a rolling roller and a rolling roller driving mechanism, the rolling roller is arranged at the top of the filter screen, and the rolling roller driving mechanism is used for driving the rolling roller to roll along the top surface of the filter screen; and a box door is arranged on one side of the box body. According to the solid-liquid separation type household garbage treatment device, solid garbage is crushed before solid-liquid separation, so that the solid-liquid separation effect is better.

The invention provides a broccoli dehydrating processing method which includes the following steps of selecting materials; cutting off stem and leaves below bud; rinsing by salt water; dicing; sterilizing and killing enzyme by blanching and scalding; blanching and scalding the diced broccoli by 97-99 DEG C hot water for 120-180 seconds; adding soda ash to control the pH value of the blanching andscalding liquid to be in 8.0-9.0; cooling; drying in two stages; selecting again the dried semi-finished product, seeking the foreign bodied out; sealing, packing, and loading in storeroom. The invention conducts effective protective processes during the process course, and the produced broccoli has high quality.

The invention relates to a flexible base preventing back sucking during a catapulting aftereffect stage. The flexible base preventing back sucking during the catapulting aftereffect stage comprises a base body and a protective net plate; the base body comprises a bottom plate and peripheral walls fixedly connected with the periphery of the bottom plate; a first flange is arranged at the upper end of the peripheral wall; a second flange of a metal material is arranged on the lower side of the first flange; a plurality of evenly distributed first installing holes are formed in the first flange in the peripheral direction; the second flange is provided with a plurality of second installing holes corresponding to the first installing holes in the first flange in the peripheral direction; the protective net plate is provided with a plurality of ventilating holes; and the protective net plate is arranged on the upper side of the base body and is made to be provided with a plurality of third installing holes corresponding to the first installing holes in the first flange in the peripheral direction. The flexible base preventing back sucking during the catapulting aftereffect stage has the beneficial effects of being simple in structure, convenient to use, safe and reliable, and effectively solves the problem that impacting loads generated because of back sucking of the flexible base during the catapulting aftereffect stage endanger equipment in a launch canister.

The invention discloses a dedusting device for cement plants. The dedusting device can radically remove dusts, and the obstruction of pipeline is avoided. The dedusting device comprises a first air intake bucket, a second air intake bucket, an air suction pipe, a gas discharge pipe, an air supply pipe, a primary vacuum pump, a secondary vacuum pump, a first filter, and a second filter. One end of the air suction pipe is connected to the first air intake bucket, the other end is connected to the first filter; the air suction pipe is provided with a first air inlet control valve; the air outlet end of the first filter is connected to the primary vacuum pump and the secondary vacuum pump, the cavity of the first vacuum pump is larger than the cavity of the secondary vacuum pump; the air outlet end of the secondary vacuum pump is connected to the second filter through the gas discharge pipe, a second control valve is arranged on the gas discharge pipe; a unidirectional pipe is arranged between the second control valve and the second filter; one end of the unidirectional pipe is connected to a position between the primary vacuum pump and the second vacuum pump so as to form a passage between the primary vacuum pump and the second filter; one end of the air supply pipe is connected to the air outlet end of the secondary vacuum pump, the other end is connected to a position between the first control valve and the first air intake bucket, and a third control valve is arranged on the air supply pipe.