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 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 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 invention relates to a feed device for use on a baling press (1) and for a loose fiber material (2) to be compressed, wherein the feed device (4) has a movable and driven and possibly guided feedelement (14, 15). The feed device (4) is assigned a protection device (3), which protects the drive area and possibly the guiding area of the feed device (4), in particular the bearing (19) thereof, against airborne fibers by using an opposing airstream (27).

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.

Disclosed is a subgrade for preventing and controlling the influence of swelling soil capillary water, and a construction and maintenance method thereof. The subgrade comprises a subgrade face layer at the topmost layer and a swelling soil subgrade cushion layer located on the lowest portion of the subgrade face layer. A water-absorbing fiber geotextile layer is arranged on the lower portion of the swelling soil subgrade cushion layer and formed by transverse composite water-absorbing resin fibers and longitudinal geotextile material fibers in a woven mode, the two ends of the composite water-absorbing resin fibers extend into resin water loss pipes on the two sides of the swelling soil subgrade cushion layer, and the resin water loss pipes are filled with high-performance composite water-absorbing resin. According to the subgrade for preventing and controlling the influence of the swelling soil capillary water, and the construction and maintenance method thereof, the resin water losspipes filled with the high-performance composite water-absorbing resin are arranged on the two sides of a road, the high-performance composite water-absorbing resin is connected with the composite water-absorbing resin fibers, the water-absorbing performance of the high-performance composite water-absorbing resin is far higner than that of the composite water-absorbing resin fibers, thus a one-waywater-absorbing channel is formed, back suction of water is prevented, the continuous water-absorbing performance of the water-absorbing fiber geotextile layer is ensured, and the backflow phenomenoncaused by other disasters is prevented.

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.