58results about How to "Avoid pressure difference" patented technology

A vent is mounted in a building wall so as to enable air exchange between the interior of the building and the outside environment. A first set of plural, spaced apart, air guide members and a second set of plural, spaced apart, air guide members are formed using elongate units each having a base element contiguous with opposing leg elements. The base elements of the first set of guide members are arranged in a first vertical plane, while the base elements of the second set of guide members are arranged in a second vertical plane, wherein the planes are in parallel horizontal mutual displacement. The leg elements of the two sets of air guide members are positioned and interlaced to force air flow moving through the apparatus is make a first right angle turn followed by a “Z” shaped turn and then a second right angle turn.

The invention discloses shading adhesive tape which comprises a first glue layer and a second glue layer. A groove is formed in the bonding side of the first glue layer or the bonding side of the second glue layer. According to the shading adhesive tape, the groove is formed in the bonding side of the first glue layer or the bonding side of the second glue layer, therefore, when the shading adhesive tape is used for being bonded with a liquid crystal display screen module with a backlight module, air existing between a liquid crystal screen and the backlight module and between all optical films in the backlight module can be communicated with external air through the groove, and a pressure difference is prevented from being generated. Therefore, in the vacuum all-gluing process, the problem that a liquid crystal display screen module is bent, deforms, skips, drifts and the like is avoided, and popularization of the vacuum all-gluing technology is achieved.

A vent is mounted in a building wall so as to enable air exchange between the interior of the building and the outside environment. A first set of plural, spaced apart, air guide members and a second set of plural, spaced apart, air guide members are formed using elongate units each having a base element contiguous with opposing leg elements. The base elements of the first set of guide members are arranged in a first vertical plane, while the base elements of the second set of guide members are arranged in a second vertical plane, wherein the planes are in parallel horizontal mutual displacement. The leg elements of the two sets of air guide members are positioned and interlaced to force air flow moving through the apparatus is make a first right angle turn followed by a “Z” shaped turn and then a second right angle turn.

The invention discloses a piece of shading tape, a backlight module, a display device and a cutting die and relates to the technical field of display. By means of the shading tape, the backlight module, the display device and the cutting die, on the basis of preventing the liquid crystal display device from generating light leakage, the problems of adsorption and attachment of an optical film layer and a liquid crystal panel can be solved. The shading tape is in an annular shape and comprises a shading layer and glue layers arranged on the surfaces of the two sides of the shading layer, each glue layer comprises an inner side face and an outer side face, the glue layers are provided with air through grooves, and the air through grooves penetrate through the outer side faces and the inner side faces. The shading tape, the backlight module, the display device and the cutting die are used for fixing the liquid crystal panel to the backlight module.

The invention discloses a liquid-crystal display panel and particularly relates to a manufacturing process of a large glass panel. The liquid-crystal display panel comprises auxiliary sealant arranged between a first substrate and a second substrate, the auxiliary sealant comprises outer auxiliary sealant and inner auxiliary sealant, the outer auxiliary sealant is arranged on the periphery of the first substrate or the second substrate, the inner auxiliary sealant is arranged in the middle of the first substrate or the second substrate, the plane of the outer auxiliary sealant is annular and is provided with at least one opening, and at least one frame of main sealant is arranged between the inner auxiliary sealant and the outer auxiliary sealant. The liquid-crystal display panel has the advantages that internal and external pressure difference is reduced in finished boxes during packaging, edge sealant and auxiliary sealant form a closed loop in the plane by means of a thinning process, pollution of the edge sealant into the boxes is avoided, procedures are reduced, and cost is reduced. In the follow-up etching process, etching materials are effectively prevented from entering the boxes to cause corrosion of panel electrodes, and production yield rate is increased.

The invention relates to a petroleum coke powder combustion transporting device for an improved industrial furnace, comprising a material cabinet, a feed machine, a feed machine controller, a pneumatic fluidifying cavity and a fuel transport pipeline; a ventilation balance room is arranged at the discharge port on the lower end of the material cabinet; the upper end of the ventilation balance room is connected with a gas pipe; the lower part of the ventilation balance room is communicated with the feed port of the feed machine; the discharge port of the feed machine is communicated with the pneumatic fluidifying cavity; the feed machine controller is used for controlling the concrete operation of the feed machine; the upper stream on the export of the pneumatic fluidifying cavity is connected with a normal-pressure air transport pipeline and the lower stream on the export of the pneumatic fluidifying cavity is connected with the fuel transport pipeline. The ventilation balance room is arranged on the discharge port on the lower end of the material cabinet through an inserting plate valve and a corrugated pipe communicated up and down. A vision lens is arranged between the discharge port of the feed machine and the pneumatic fluidifying cavity; and the vision lens is arranged at the lower stream of the fuel transport pipeline close to the export of the pneumatic fluidifying cavity. The device has the advantages of energy saving, environment protection and low noise.

The invention discloses a cooking utensil and a control method of the cooking utensil. The cooking utensil comprises: a body provided with a pot body, wherein the pot body is provided with an accommodating space for placing food materials; an air pump arranged on the body and having an air inlet pipe communicated with the outside and an air outlet pipe communicated with the accommodating space; and an exhaust hole formed in the body and communicated with the accommodating space. Through the arrangement, when foams are generated in a pot, a user can start the air pump to introduce cold air intothe pot; and after the cold air cools the temperature in the pot, the foams generated in the pot can be prevented from overflowing, so that the normal use is guaranteed for the user. Moreover, overflowing foams can be prevented from corroding the cooking utensil, so that the service life of the cooking utensil is prolonged.

The invention discloses an automobile fan impeller. The automobile fan impeller comprises a hub (1), first fan blades (2) and second fan blades (3). The first fan blades (2) and the second fan blades (3) are arranged in the circumferential direction of the hub (1). One ends of the first fan blades (2) are fixedly connected to the outer wall of the hub (1), and the other ends of the first fan blades (2) extend outwards in the radial direction; one ends of the second fan blades (3) are fixedly connected to the outer wall of the hub (1), and the other ends of the second fan blades (3) extend outwards in the radial direction; the length of the first fan blades (2) is 1.5 to 2 times that of the second fan blades (3); and the first fan blades (2) and the second fan blades (3) are arranged in a staggered manner. According to the automobile fan impeller, turbulence generated in the position close to the hub can be prevented from disturbing emission of the whole air flow, and the heat dissipation efficiency of a fan can be enhanced.

A gear apparatus for a solid-bowl screw centrifuge. The centrifuge includes a drum and a screw, both of which drum and screw are configured to be driven and the screw is further configured to be driven at a different rotational speed relative to the drum. The gear apparatus is connected between one or more drive motors and the screw and the drum. The gear apparatus is continuously filled with a lubricant and includes a hollow drive shaft having at least one hollow channel.

The invention relates to a device (2) which includes a thermostatic element (10), as well as a stopper (20), which is axially movable relative to a stationary seat (5A) of a housing (3) so as to openand close a passage for the circulation of the fluid and which is connected to a body (11) of the thermostatic element so that, during the expansion of a thermodilatable material contained in said body, said body drives the stopper relative to the seat, a piston (12) of the thermostatic element, which is immersed in said thermodilatable material, being securely connected to the housing. In order for the integration of an outflow in the stopper to be economical, efficient and reliable, the stopper includes, as two separate parts: an insert (22) for receiving the body of the thermostatic element, which is provided with outflow means (22.5, 22.6), suitable for, regardless of the axial position of the stopper (20) relative to the housing (3), allowing the fluid to flow freely between the bodyof the thermostatic element and the inner surface of the insert and to pass through the insert in order to reach the outer surface thereof; and a sleeve (23) for lining the outside of the body of thethermostatic element, which is securely attached to the insert, surrounding the entire periphery of the body of the thermostatic element at a distance so as to define radially between said body of thethermostatic element and the sleeve a free space (V) for fluid circulation passing through the outflow means.

A gear apparatus for a solid-bowl screw centrifuge. The gear apparatus includes a shaft, a gear, and a bearing. The centrifuge includies a drum and a screw, both of which are configured to be driven. The screw is further configured to be driven at a different rotational speed relative to the drum. The gear apparatus is connected between one or more drive motors and the screw and the drum. The gear apparatus is continuously filled with a lubricant and includes a hollow drive shaft having two hollow longitudinal channels extending in an axial direction. Also included is a lubricant compensating system having a lubricant compensating container connected via a line and a rotary lead-through for lubricating the bearing through the two hollow longitudinal channels.

The invention discloses an underwater sensor fixing device. The underwater sensor fixing device comprises a fixing ring composed of a semi-circular-arc-shaped fixing assembly and a complementary semi-circular-arc-shaped fixing assembly. The semi-circular arc fixing assembly and the complementary semi-circular arc fixing assembly are provided with arc grooves used for fixedly installing sensors. Abayonet is formed in one end of the semi-arc-shaped fixing assembly; a clamping block matched with the bayonet is arranged at one end of the complementary semi-arc-shaped fixing assembly. The bayonetis fixedly connected with the clamping block through an axial bolt; and fastening terminals are arranged at the other ends of the semi-circular arc fixing assembly and the complementary semi-circulararc fixing assembly and are locked and fixed through fastening bolts. The underwater sensor fixing device is simple in structure, convenient to process, firm in fixation, capable of fixing multiple ormultiple sensors, and particularly suitable for fixing underwater electric field sensors.

The invention discloses an internal-external gas pressure balancing assembly for a refrigerator and the refrigerator with the assembly. The balancing assembly disclosed by the invention is provided with an air tube which communicates with the inner part of an inner container of the refrigerator and an air door which is used for starting and closing the air tube; the air door is made of iron magnetic materials; the balancing assembly is also provided with an electromagnet which is arranged on one side of the air door and is used for controlling starting / closing of the air door; when the electromagnet is powered on, the electromagnet is adsorbed to start the air door and enable the air tube to be conducted; the inner part of the inner container of the refrigerator communicated with the outside through the air tube; and when the electromagnet is powered off, the electromagnet is released to close the air door so as to block the air tube. Based on the special structure of the internal-external gas pressure balancing assembly for the refrigerator disclosed by the invention, the air door is controlled through the electromagnet to be opened, so that communication between the inner container and the outside of the refrigerator can be realized; and moreover, in the application scene of the special refrigerator, before the door body of the refrigerator is opened, through communication between the inner container and the outside of the refrigerator, pressure intensity difference between the inside and the outside of the refrigerator can be avoided, and thus, the door body of the refrigerator is conveniently opened by a user.

The invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, comprising a magnetic actuator (1) for directly controlling a preferably needle-shaped injection valve member (2), by means of the stroke movement of which at least one injection opening (3) of the fuel injector can be released or closed. The magnetic actuator (1) comprises an armature element (4) that can carry out a stroke movement in order to control the control pressure in a control volume (5). According to the invention, the injection valve member (2) can be mechanically coupled to a hydraulic intensifier (6) during a first phase of the injection valve member opening stroke, said intensifier having a hydraulic active surface A1 which delimits the control volume (5) and which together with a hydraulic active surface A2 that is formed on the injection valve member (2) is larger than a hydraulic active surface A3 that is formed on the armature element (4) and delimits the control volume (5) so that a force amplification is caused on the basis of the surface area ratio of the hydraulic active surfaces A1, A2, and A3 that are relevant to the control volume (5). Furthermore, according to the invention the injection valve member (2) can be mechanically coupled to the armature element (4) during the injection valve member closing stroke, the pressing force of an armature spring (7) being applied to said armature element in the closing direction of the injection valve member (2) such that the closing stroke of the injection valve member (2) can be caused by means of the armature spring (7).

The invention discloses a bucket elevator. The bucket elevator comprises a driving device, an anti-reversal device, a traction device, a base, a housing, a supporting plate, a material stopping plate, a feeding opening and a discharging opening. The housing of the bucket elevator is provided with an air suction pipe and a ventilation opening, hence, internal pressure and external pressure of the bucket elevator can be balanced, pressure difference can be prevented, and the phenomenon that dust overflows from the discharging opening, and thus material waste and environmental pollution are caused is avoided. Moreover, the dust is accumulated in a gap between an inner filter net layer and an outer filter net layer through a double-layer filtering cover, and therefore workers can clean up the dust conveniently and regularly.

The invention provides a pure electric vehicle battery charging protection method and device. The method comprises the following steps that: the internal storage information of a system is emptied when a battery starts to be charged; voltage and current information of any battery cell is collected, and whether the current of the battery cell is stable or not is judged; if the current of the battery cell is stable, a first voltage value of the battery cell is acquired, and a second voltage value of the battery cell is acquired after T seconds; voltage difference value of the battery cell is calculated according to the first voltage value and the second voltage value, and the voltage difference values of all the battery cells in the system in a preset sampling period are recorded; and when the voltage difference value of any battery cell in the preset sampling period is greater than the threshold value, fault latching is carried out, and charging is forbidden. According to the method anddevice, whether a fault occurs or not is judged by judging a voltage drop condition when current is stable, voltage difference abnormity caused by current fluctuation is avoided, and the accuracy ishigh; and the abnormal drop of the voltage of each cell in a charging process is judged, the fault is locked, and therefore, safety is improved.

The invention relates to the field of tires, and provides an automobile multi-airbag inflatable explosion-proof inner tube. The automobile multi-airbag inflatable explosion-proof inner tube includes an inflatable expansive rubber tire body with the supporting effect, and the rubber tire body is internally provided with a plurality of limbs separating the rubber tire body into a plurality of airbags. The rubber tire body is internally provided with an inflating and deflating system, the inflating and deflating system comprises a plurality of inflating pipes which separately communicate with thecorresponding air bags and air nozzles penetrating out of the rubber tire body, the inflating pipes communicate with the air nozzles correspondingly, and the air nozzles are internally provided withone-way valves for allowing gas to enter the inflating pipes unidirectionally. By arranging the multiple airbags and the separate inflating and deflating system, the safety is improved.

The invention discloses a control valve of a carbon tank. The carbon tank comprises an upper cover and a shell, wherein the upper cover is provided with a Laval pipe shaped through hole; the shell is internally provided with a magnetic tank, a coil framework, a coil, a contact pin, a magnetic core, armature iron and a valve seat; and the magnetic tank is internally provided with a cavity. The coil framework, the coil and the contact pin are mounted in the cavity; the coil framework is provided with a hollow shaft; the coil is wound at the periphery of the hollow shaft of the coil framework; the contact pin is fixed on the coil framework; a copper line of the coil is electrically connected to one end of the contact pin; the magnetic core is located in the hollow shaft of the coil framework and is fixed with the magnetic tank by screw threads; the armature iron and the valve seat are respectively arranged on the coil framework; a through hole with a radial section is arranged at the center of the valve seat; and a spring is arranged between the magnetic core and the armature iron. By adopting the Laval pipe structure, the control valve of the carbon tank, disclosed by the invention, can overcome a difference of pressures at two ends of the control valve of the carbon tank and realize a relatively steady gas flow.

The invention discloses an air conditioning system with a pressure relief function. The air conditioning system comprises a compressor, a condenser, an expansion valve, an evaporator and a gas-liquid separator. A pressure relief branch is arranged between an inlet pipe of the condenser and an inlet pipe of the evaporator, an electromagnetic valve is serially connected in the pressure relief branch, and turning on and turning off of the electromagnetic valve are staggered and synchronized with turning on and turning off of the compressor. Since the pressure relief branch is arranged between the inlet pipe of the condenser and the inlet pipe of the evaporator, a high-pressure refrigerant in the condenser can be quickly released into low-pressure refrigerant of the evaporator, pressure balance of a refrigerating system is quickly established, and pressure difference is prevented from existing in the system when the compressor is started again; meanwhile, diameter of the pressure relief branch is large, so that oil return of the refrigerating system is well guaranteed, and heat exchange effect of the system is improved; moreover, a pressure sensor is further arranged at the position of the electromagnetic valve, pressure relief information can be fed back to an air conditioning control system by the pressure sensor, and accordingly convenience is brought to the control system to adjust states of an air conditioner.

The invention discloses a fly ash separation and returning device for a layer-burning biomass boiler. The device consists of a returning leg and a cyclone concentrator, wherein the cyclone concentrator consists of a cylindrical transition section, a funnel-shaped taper tube, a cylindrical central tube, a tobacco pipe-shaped inlet and a heat-resistant alloy steel filter screen mesh; the returning leg is arranged on the lower part of the cyclone concentrator, and is communicated with a lower cavity of a rear arch of the layer-burning biomass boiler; the cylindrical central tube is arranged in the upper center of the cylindrical transition section; the heat-resistant alloy steel filter screen mesh is arranged on the upper side part of the cylindrical transition section in a downward inclination way. According to the device, flue gas carrying a great number of small unburned biomass fuel particles enters the cylindrical transition section from the tobacco pipe-shaped inlet, the small unburned biomass fuel particles are separated and concentrated to an inlet of the returning leg, and reenter a hearth for burning under the action of the heat-resistant alloy steel filter screen mesh due to the fact that the flow velocity of the flue gas rapidly decreases, and clean flue gas flows out of the cylindrical central tube; therefore, the efficiency of the boiler is improved, tail burning risks are lowered, and equipment such as a bag-type dust collector is protected.

The invention relates to a self-decompression multi-lip sealing bearing which comprises an inner ring, an outer ring, steel balls arranged between the inner ring and the outer ring, a retainer and a seal ring, wherein the seal ring comprises a sealing piece and an L-shaped framework; the L-shaped framework is arranged in the sealing piece; a chuck is arranged on the outer side edge of the sealingpiece; a plurality of sealing lips forming dip angles outwards are arranged on the inner side edge of the sealing piece; the chuck is mounted in a groove in the inner circumferential surface of the outer ring in a clamping manner; the sealing lips are in interference contact with the outer circumferential surface of the inner ring and are uniformly distributed from inside to outside; the sealing lips and the inner ring jointly form labyrinth seal; the thickness of the sealing lip on the outer side is greater than that of the sealing lip on the inner side; an inner groove is formed in one sideof the sealing lip on the innermost side; an outer groove is formed in one side of the sealing lip on the innermost side; and the sealing piece adopts modified hydrogenated acrylonitrile butadiene rubber. The self-decompression multi-lip sealing bearing is high in sealing performance and can effectively release the pressure intensity in the bearing to enable the internal pressure intensity and external pressure intensity of the bearing to be consistent.

The invention discloses a bucket elevator. The bucket elevator comprises a driving device, an anti-reversal device, a traction device, a base, a housing, a supporting plate, a material stopping plate, a feeding opening and a discharging opening. The housing of the bucket elevator is provided with an air suction pipe and a ventilation opening, hence, internal pressure and external pressure of the bucket elevator can be balanced, pressure difference can be prevented, and the phenomenon that dust overflows from the discharging opening, and thus material waste and environmental pollution are caused is avoided. Moreover, the dust is accumulated in a gap between an inner filter net layer and an outer filter net layer through a double-layer filtering cover, and therefore workers can clean up the dust conveniently and regularly.

The invention discloses a device for preparing an organic fertilizer from sludge. The device comprises a preparation shell, a feeding groove is formed in one side of the preparation shell, one side ofthe feeding groove communicates with a feeding hopper, a feeding mechanism is arranged at the end, close to the feeding groove, of the feeding hopper, and a fixing groove is formed in the top of thepreparation shell; heating and dehumidifying mechanisms are fixedly connected to the inner walls of the fixing grooves correspondingly, supporting plates are rotatably connected to the two sides of the inner wall of the preparation shell through electric control rotating pins correspondingly, a smashing and self-cleaning mechanism is arranged below the inner wall, close to the supporting plates, of the preparation shell, and a door plate is rotatably connected to one side of the preparation shell through a hinge; and the lower portion of one side of the preparation shell communicates with a discharging port, and the bottom of the preparation shell is fixedly connected with a support. According to the device for preparing the organic fertilizer from the sludge, which relates to the technical field of fertilizer processing, the automation degree of the device for preparing the organic fertilizer is improved, the working efficiency of the device is improved, and the labor intensity of workers is reduced.

The invention relates to the technical field of glass processing, in particular to glass processing annealing equipment which comprises a glass annealing kiln and a conveying belt, the glass annealing kiln is internally provided with a heater, the conveying belt is installed in the middle of an inner cavity of the glass annealing kiln in the front-back direction, and the glass processing annealing equipment further comprises two windshield mechanisms and a driving mechanism, the two supports are respectively mounted at openings in the front and rear sides of the glass annealing kiln; the cleaning mechanism is arranged at the bottom end of an inner cavity of the glass annealing kiln in the front-back direction; the windshield mechanism comprises: a frame mounted at the opening of the glass annealing kiln; the multiple baffles are inserted into the inner cavity of the rack from left to right in an up-down sliding mode. Gas circulation between the glass annealing kiln and the outside is reduced, the air pressure difference in the glass annealing kiln is avoided, it is guaranteed that glass products are evenly heated, the annealing effect of the glass products is high, glass fragments can be conveniently collected and taken out, and personnel scalding caused by manual cleaning is prevented.

This bonding device 100 is a bonding device that bonds a substrate 12 and an electronic component 14 together by heating, while pressurizing, a pressurization unit 200 including a first transmission member 210 and a second transmission member 220 that sandwich an assembly 10 in which the electronic component 14 is placed on the substrate 12 with a metal particle paste 16 therebetween and that transmit pressure and heat to the assembly, the bonding device comprising: a heating mechanism part 120 including a first heating part 122 and a second heating part 124 that are arranged at positions opposing one another; a positioning mechanism part 130 for positioning the pressurization unit 200 at a position within a space between the first heating part 122 and the second heating part 124 where the pressurization unit contacts neither the first heating part 122 nor the second heating part 124; and a pressurizing mechanism part 140 that pressurizes the pressurization unit 200 by moving the first heating part 122 and / or the second heating part 124. With this bonding device 100, the substrate 12 and the electronic component 14 can be bonded together with high bonding force.

The invention discloses a pressure balance control method and device for a blast furnace coal injection system. The method includes the steps that a blowing tank A at the last phase in the braize blowing sub-process stable blowing state is connected with a blowing tank B in a blowing waiting state through a connecting pipe by opening a first stop valve and a second stop valve at the same time; and when the pressure difference deltaP between the blowing tank A and the blowing tank B is extremely small, the absolute value of a difference of PTA and PTB is smaller than or equal to deltaP, the first stop valve and the second stop valve are closed at the same time, and pressure balance control is completed. The pressure balance control device comprises the blowing tank A and the blowing tank B which are sequentially communicated through the connecting pipe, and the connecting pipe is sequentially provided with the first stop valve and the second stop valve. According to the pressure balance control method and device, the pressure difference between the blowing tank A and the blowing tank B is controlled through the first stop valve and the second stop valve, pressure balance between the blowing tank A and the blowing tank B is achieved, shortcomings such as pressure fluctuation, the hysteretic nature, overregulation or under-regulation in the prior art can be eliminated, and the pressure balance control method and device have the remarkable economic benefit on stable production of a blast furnace.

The invention discloses a novel aviation kerosene coalescence separator which comprises a barrel, a safety valve connector and an automatic exhaust valve are arranged at the upper end of the barrel, the automatic exhaust valve is connected into a torch system, the lower end of the barrel is connected with an inlet pipe and an outlet pipe, and a coalescence filter element, a separation filter element, a coalescence filter element tray and a separation filter element tray are arranged in the barrel. The coalescence filter element is connected to the coalescence filter element tray, the separation filter element is connected to the separation filter element tray, an opening used for being connected with the inlet pipe is formed in the lower portion of the coalescence filter element tray, and an opening used for being connected with the outlet pipe is formed in the lower portion of the separation filter element tray. The bottom of the barrel is further connected with a liquid cutting pipeline. The upper end and lower end of the outer surface of the barrel are connected with a first double-flange liquid level meter and a second double-flange liquid level meter respectively. By means of the coalescence separator, manual operation can be greatly reduced, long-term stable operation of the coalescence separator is achieved, abnormal pressure difference of the coalescence separator and damage to a filter element caused by gas gathering inside the coalescence separator are avoided, and long-term stable operation of the device is kept.

The invention relates to vacuum glass air exhaust method and device. The device is provided with a main air exhaust pipeline, a branch air exhaust pipeline and a relevant air exhaust pump. Through themethod characterized by firstly using the branch air exhaust pipeline for exhausting air at low speed and then using the main air exhaust pipeline for quickly exhausting air, a pressure difference between an inner chamber of vacuum glass and a vacuum chamber caused by an air exhaust efficiency difference inside and outside the vacuum glass in the vacuum extraction process in the prior art is effectively avoided, the damage on a sealing structure due to the pressure difference in the vacuum extraction process is further avoided, and the processing quality and the service life of the vacuum glass are ensured.