75results about How to "Balance internal and external air pressure" patented technology

The invention discloses an interchangeable water tank assembly and a domestic back-suction type dust collector. The interchangeable water tank assembly comprises a water tank body in which a water trough is arranged, a cover body which covers the water tank body to form a closed space in an encircling manner, an electromagnetic valve assembly mounted in the cover body, and flow guide cloth which is located in the water tank body and is close to the water trough, wherein a water flow guide opening is formed in the side wall of the water trough, and corresponds to the flow guide cloth; the electromagnetic valve assembly comprises an electromagnetic valve and a guide pipe with one end connected with the electromagnetic valve; an air injection opening communicated with the other end opening of the guide pipe is further formed in the side wall of the water trough. According to the technical scheme, the interchangeable water tank assembly can prevent a water tank from leaking water or seeping water; and furthermore, the water drain uniformity can be increased, and the cleanness of a floor cleaned by the dust collector is improved.

The invention provides a soil sampler, in particular a soil sampler applicable to hard or loose soil. The soil sampler consists of a back propping element, a transmission unit, a sampling head and a front propping element. The soil sampler can sample easily in the hardened soil; the sampling head is provided with a soil sample cutter; when a soil sample is put into a sampling box, the sample and the soil in the sampling box are completely separated by the soil sample cutter so as to ensure that the sample does not slip; the soil sampler can sample in the loose soil where the sample is difficult to form; the sampling head is provided with a plurality of sampling box chambers so as to ensure that the soil sample is finely layered and a plurality of samples can be sampled at the same time; the bottom section of the sampling box chamber is reserved with gaps, simultaneously the side wall of the sampling box chamber is provided with a partition table and the bottom of the sampling box chamber is provided with vent holes so as to ensure that the internal and external pressures are balanced when the sample is introduced into the sampling box, the soil is not disturbed, and in-situ sampling is realized; and the volume and weight of the sampling box are definite and convenient for measuring the volume weight of the soil sample.

The invention discloses a novel flexibly-packaged lithium ion battery and a preparation method therefor. The service life of the flexibly-packaged lithium ion battery can be prolonged, and the safety performance can be improved; two rings of sealed packaging edges are arranged on the periphery of an aluminium plastic film cell of the flexibly-packaged lithium ion battery; the two packaging edges comprise an inner side packaging edge and an outer side packaging edge; and an inert gas airbag is arranged between the inner side packaging edge and the outer side packaging edge. According to the novel flexibly-packaged lithium ion battery, the inert gas airbag is arranged around the cell part of the novel flexibly-packaged lithium ion battery, so that the internal cell is isolated from the external; moisture in the outside is hard to penetrate the packaging part and enter the interior of the cell, so that the service life of the battery is prolonged, and the production cost is saved; the inert gas airbag is arranged around the cell part of the novel flexibly-packaged lithium ion battery; the inner side packaging is relatively thick and the outer side packaging is relatively thin, so that when the interior of the battery cell is inflated, the inner side packaging part is inflated to be opened firstly, and the inert gas enters the cell part; therefore, a large amount of air is prevented from entering the interior of the cell to react with lithium to result in danger, and the safety performance of the battery is improved.

The invention discloses a sampler for undisturbed soil, and belongs to the technical field of soil sampling. The sampler comprises a rotating handle, sample storage barrels and a sampling drill bit, wherein the bottom end of the rotating handle is connected with a sample storage barrel mounting base; the sample storage barrels are mounted in the sample storage barrel mounting base; the sampling drill bit is detachably connected to the bottom end of the corresponding storage sample barrel; a plurality of the sample storage barrels are arranged; the plurality of the sample storage barrels are detachably connected up and down in sequence; the sampling drill bit is arranged at the bottom end of the bottommost sample storage barrel. The plurality of the sample storage barrels are arranged; through adjusting the quantity of the sample storage barrels, a length of the whole sampler can be adjusted; the soil at a different depth can be sampled; the stratified sampling is realized; the sample storage barrels can also have different lengths; the length of the sampler can be more flexibly adjusted, and the stratified sampling can be further better realized.

The invention discloses a cooling utensil. A gas channel is defined in the cooling utensil. The gas channel is provided with an inlet communicated with the outside, an outlet communicated with an inner cavity of the cooling utensil and a vent communicated with the inlet and the outlet. A plugging block for opening or sealing the vent is arranged at the vent. The plugging block normally seals the vent at least trough the gravity of the plugging block. According to the cooling utensil, cooling utensil inner-outer air pressure can be balanced, and a door body of the cooling utensil can be opened conveniently. The structure is simple; production and promotion can be well achieved; material cost is low.

The invention discloses an anti-overfilling urea box which comprises a box body. A filling opening is arranged on the top of the box body; a rated full position is arranged in the box body; expand space is formed between the rated full position and the top of the box body; a filling barrel extends from the filling opening; and the highest position of an output opening of the filling barrel and the rated full position of the box body are positioned on the same horizontal position. Accordingly, the filling barrel which extends into the box body extends from the filling opening, the highest position of the output opening of the filling barrel and the rated full position of the box body are positioned on the same horizontal position, so that the expand space in the box body is closed when the output opening of the filling barrel is blocked by urea liquor, new urea liquor cannot be filled in the box body, the level of the urea liquor in the box body cannot exceed the rated full position, enough space is provided for crystallization expansion of the urea liquor, the phenomenon that the box body is expanded and even is broken is stopped, and the anti-overfilling urea box brings convenience for users during use.

The invention provides an atomic gas chamber of a compound eye-type stacked dense multi-bubble structure. The atomic gas chamber comprises a glass shell and a filled medium, a plurality of micro-atomic air bubbles configured by glass walls are also arranged in the glass shell, and the micro-atomic air bubbles are filled with alkali metal atoms and a buffer gas. The atomic gas chamber of the compound eye-type stacked dense multi-bubble structure provided by the invention can stabilize the temperature coefficient and suppress the frequency shift, and solve the constrain of the bubble-type germanium atomic frequency standard and the rubidium atomic magnetometer on the long-term frequency stability index due to the changes of the temperature and pressure of the atomic chamber, thereby solvingthe problem of long-term frequency drift. The technical scheme of the invention provides atomic gas chambers with lower temperature coefficients, temperature fluctuation and less pressure shift for applications requiring higher demands such as atomic clocks, atomic magnetometers, atomic filters, and Faraday active light clocks, etc.

The invention discloses a vibratory screening combined chemical powder screening device. The vibratory screening combined chemical powder screening device comprises a shell. Electric push rods are arranged on the two sides of the shell. An upper cover is arranged at the upper ends of the electric push rods. The upper cover is provided with an elastic mounting plate, a feed pipe, a motor, a cam anda filter screen cylinder. A bottom plate is arranged at the internal bottom of the shell. The right wall of the shell is provided with a discharge pipe. Filter cloth, a screw cap, a rubber ball sleeve and an air injection cavity are arranged on the discharge pipe. The two sides of the shell are provided with notches. A sleeve is arranged on the sidewall of the shell and located below the notches.The sleeve is provided with a piston plate, a threaded rod, a rotary bearing and suction cups. According to the vibratory screening combined chemical powder screening device, the elastic mounting plate vibrates up and down to screen and intercept powder with different mesh numbers onto corresponding filter screens. In this way, screening and collection can be conducted rapidly. The vibratory screening combined chemical powder screening device can conduct exhausting and collect high-mesh powder through the design of the discharge pipe, the filter cloth, the screw cap, the rubber ball sleeve and the air injection cavity and improve the stability through the sleeve, the piston plate, the threaded rod, the rotary bearing and the suction cups.

The invention discloses a liquid crystal displaying panel. The liquid crystal displaying panel comprises two substrates and frame sealing glue, wherein the two substrates are opposite to each other; the frame sealing glue is arranged between the two substrates, is positioned on the peripheries of the two substrates and comprises a plurality of frame sealing glue units; each frame sealing glue unit comprises a connecting section and end structures positioned at two ends of the connecting section; the end structures are hook-shaped; and the end structures of each two adjacent frame sealing glue units are coupled to each other so as to form a bent channel. By using the bent channel of the liquid crystal displaying panel, UV (ultraviolet) glue and corrosive liquid are stopped in a panel thinning process, a phenomenon that the UV glue and the corrosive liquid permeate in the liquid crystal displaying panel, and a secondary liquid crystal displaying panel is scrapped is avoided, the yield rate is improved, the lengths of the frame sealing glue units can be accurately controlled, poor coating of frame sealing glue is avoided, and owing to a coupling structure, the displaying panel cannot be affected even if wires are disconnected in a poor state.

The invention discloses an oil storage tank, an oil shielding component of the oil storage tank and a vehicle with the oil storage tank. The oil storage tank comprises a tank body and a tank cover; a tank opening, an oil outlet and an oil return opening are formed in the tank body; the tank cover comprises an inner cover body, an oil shielding piece and an outer cover body; the inner cover body covers the tank opening; a first vent hole is formed in the inner cover body; the oil shielding piece is arranged under the first vent hole; the outer cover body covers the inner cover body; and a flowing passage is formed at the matched part of the inner cover body and the outer cover body. The oil storage tank has the advantages that the inside and outside pressures of the oil storage tank can be balanced and the good sealing performance of the oil storage tank can also be guaranteed.

An LED inorganic packaging method comprises the following steps: (1) carrying out die bonding in a metal support; (2) dispensing glue on the top of the enclosure frame of the metal bracket; (3) enabling a glass cover plate to cover the top of the metal support, and attaching the edge of the glass cover plate to the top of the surrounding frame through glue; (4) moving the metal bracket communicated with the glass cover plate into a high-pressure heating pot, and heating and curing the glue by utilizing heat radiation on the inner wall of the high-pressure heating pot; (5) in the heating process, enabling the air pressure in a closed space defined by the metal support and the glass cover plate and the air pressure in the sealed high-pressure heating pot to reach a balanced state; and (6) after heating and curing are finished, taking out the metal bracket after the pressure in the high-pressure heating pot is recovered to normal pressure, thereby finishing inorganic packaging of the LED.After heating, the air pressure in the metal bracket rises, and meanwhile, the air pressure in the high-pressure heating pot rises, so that the internal and external air pressures of the metal bracket are still kept balanced, and the glue cannot generate an internal air passage caused by unbalanced air pressure.

The invention relates to the field of plastic cups, in particular to a plastic cup. The plastic cup includes a heat insulation structure, antiskid strips, a sealing structure, a plastic cup body, a storage structure and a filtering structure; a driving rod on a base is connected with the plastic cup body in a threaded mode, the base abuts against and drives a heat insulation ring and the plastic cup body to slide, the heat insulation ring drives clamping blocks on a pull rod to correspond to rubber rings on an end cover one to one, the rubber rings abut against the clamping blocks, the rubber rings limit the clamping blocks, the base drives the driving rod and is connected with the plastic cup body in a threaded mode, the base moves away from the plastic cup body, the driving rod abuts against a blocking ring, the blocking ring abuts against the heat insulation ring, the heat insulation ring is slidably connected with a limiting block on the plastic cup body, the pull rod pulls the clamping blocks to abut against the end cover, the clamping blocks abut against the rubber rings, gas inside the rubber rings enters the interior of an accommodation chamber to deform a rubber pad, air pressure inside and outside the end cover and the plastic cup body is balanced, and the end cover is convenient to disassemble.

The invention discloses an electromagnetic valve for realizing pressure adjusting through mechanical force transmission. The electromagnetic valve for realizing pressure adjusting through mechanical force transmission comprises a pressure adjusting device. The pressure adjusting device comprises a pressure adjusting cylinder body, a high pressure gas exhaust plug, a low pressure gas inlet plug, anelastic supporting piece, a low pressure gas inlet cap, a high pressure gas exhaust cap and a middle push-and-pull connecting rod. The high pressure gas exhaust cap, the low pressure gas inlet plug and the elastic supporting piece are accommodated in a hollow cylinder body of the pressure adjusting cylinder body; the high pressure gas exhaust plug and the low pressure gas inlet plug are correspondingly arranged at the two ends of the elastic supporting piece; a low pressure gas inlet is formed in the high pressure gas exhaust plug; the low pressure gas inlet cap covers the low pressure gas inlet; a high pressure gas exhaust hole is formed in the low pressure gas inlet plug; the high pressure gas exhaust cap covers the high pressure gas exhaust hole; and the low pressure gas inlet cap andthe high pressure gas exhaust cap are connected with each other through the middle push-and-pull connecting rod. According to the electromagnetic valve for realizing pressure adjusting through mechanical force transmission, by arranging the pressure adjusting device, the pressure of a valve body can be automatically adjusted to realize balance of inside and outside pressures.

The invention relates to the technical field of electronic cigarettes. The problem of liquid leakage of a cartridge assembly of an electronic cigarette in a low-pressure environment is solved. The invention provides a cartridge assembly of an electronic cigarette and the electronic cigarette with the cartridge assembly. The cartridge assembly includes: an e-liquid bin, an atomizer, a micro pump and a one-way valve; a liquid outlet and a gas inlet are formed in the side wall of the e-liquid bin; at least one part of the side wall of the e-liquid bin except the part adjacent to the liquid outletand the gas inlet forms a flexible diaphragm, the micro pump communicates with the e-liquid cavity and the atomizer and used for pumping e-liquid in the tobacco e-liquid cavity into the atomizer, andthe one-way valve is arranged at the gas inlet and used for controlling gas to only enter the e-liquid cavity in a one-way mode. The flexible diaphragm correspondingly deforms according to the relationship between the internal pressure of the e-liquid cavity and the external pressure of the e-liquid cavity, so that the balance of the internal and external air pressure of the e-liquid bin is realized, the situation that the e-liquid is pushed out due to higher internal pressure of the e-liquid cavity is prevented, and the phenomenon of liquid leakage of the electronic cigarette is prevented.

The invention provides a leakproof sealant for a nickel-hydrogen battery. The leakproof sealant comprises the following ingredients (by weight): 15-20 parts of silicone rubber, 10-15 parts of olefin resin, 83-92 parts of a reactive diluent, 3-5 parts of an acidic regulator and 0.5-3.5 parts of an obstruction filler. The diameter of the obstruction filler is 1-10 microns. The invention also discloses a manufacturing method of the leakproof sealant for a nickel-hydrogen battery. By the manufacturing method, flowing property of the sealant can be remarkably reduced, the sealing performance of anelectrolyte is strong, and an alkaline electrolyte can be effectively prevented from leaking from the top of a battery. The sealant can effectively release a few of gases to balance internal and external air pressure. Then, stability of the sealant is strong, and the alkaline electrolyte will not leak from the top of the battery. Thus, normal service life and use performance of the battery are effectively ensured. As high and low temperature resistance of the sealant is also strong, stability of the sealant can be further ensured.

Disclosed is a lamp. The lamp comprises a lamp shell, wherein at least one groove is formed in the outer wall of the lamp shell, a plurality of through holes are formed in the bottom of each groove, a film is further laid inside each groove, and a top cover is arranged on each groove and used for covering the groove. According to the invention, heat generated by the lamp due to irradiation for a long time can be dissipated in time, the internal air pressure and the external air pressure are balanced, and the service life of components is prolonged. Meanwhile, water mist and dust located outside the lamp are prevented from entering the lamp, and the lamp has quite high practical value. In addition, the top covers of the lamp have the function of adjustment of the illumination angle.

The invention discloses an intelligent seal, and mainly relates to the field of seals for intelligent seal machines. The intelligent seal comprises column body, a camera, an information acquisition and transmission unit, a seal head, a seal check device and a pigment water supply device. The seal check device comprises a lighting LED lamp, a scanning transmission device and a matched seal die; scanning transmission equipment scans the matched seal die in a die groove and transmits the matched seal die to a mobile phone APP of an approved person through the information acquisition and transmission unit through a wireless signal; and the pigment water supply device comprises a pigment box and a plush core rod, and a seal character on the seal head is made of a fiber material. The intelligentseal has the beneficial effects that the camera and the seal check device can be transmitted to a mobile phone of an examining and approving person through the information acquisition and transmission unit when the examining and approving person is on the outside, so that the checking of the content and the seal head is carried out, the seal is correct, and the phenomenon of fake seal of the cover is avoided; and moreover, the supplement of seal head pigment can be conveniently and automatically carried out.

The invention provides a vibrating diaphragm which comprises a vibrating diaphragm main body, the vibrating diaphragm main body comprises a fixing part on the outer side, a folding ring part which isarranged on the inner ring side of the fixing part in a protruding mode and can generate elastic deformation and an inner side part located on the inner ring side of the folding ring part, and the vibrating diaphragm main body is made of a waterproof breathable material with waterproof breathable micropores. The invention further provides a loudspeaker with the vibrating diaphragm. According to the technical scheme of the invention, the vibrating diaphragm main body is made of the waterproof breathable material with the waterproof breathable micropores so that the vibrating diaphragm body is provided with the micropores, the size of the micropores is between that of water molecules and that of air molecules, so that the air molecules can smoothly pass through the micropores, meanwhile, thewater molecules are effectively prevented from passing through the micropores, the vibrating diaphragm has waterproof and breathable functions, internal and external air pressures of the loudspeakerare balanced, and the waterproof performance of the loudspeaker can be improved. Meanwhile, the vibrating diaphragm forms waterproof breathable micropores, thereby avoiding the forming of larger air vents and the additional pasting of a waterproof net, and guaranteeing the sound production performance of the diaphragm.

The invention discloses an electronic stethoscope. The electronic stethoscope comprises an upper shell (1) and a lower shell (2), wherein a stethoscope membrane (3) is fixed on the lower shell (2) and is used for touching a human body and transmitting heart sound or lung sound; a cavity cover (6) is tightly connected with the lower shell (2); the cavity cover (6) and the stethoscope membrane (3) encircle to form a sound collection cavity; a sound transmission device (4) is arranged in the sound collection cavity and is fixed on the cavity cover (6); a through hole (62) is formed in the cavity cover (6), so that the interior of the sound collection cavity is communicated with the exterior; the stethoscope further comprises an isolation cover (7); the isolation cover (7) covers the exterior of the cavity cover (6); a channel for communicating the through hole (62) with the outside is reserved; the upper shell (1) and the lower shell (2) are fixedly connected together; airflow is communicated with the outside via a pressure releasing hole (12) in the upper shell (1); the structures such as a pressure releasing channel and the isolation cover and the like are arranged, so that the inner air pressure intensity and the outer air pressure intensity of the stethoscope can be balanced; the noise is isolated; the sensitivity and the signal-to-noise ratio of the stethoscope can be improved.

The invention discloses a sealing cover of a washing machine and the washing machine. The washing machine comprises an outer barrel and a separation barrel which is fixedly connected or integrally formed on the bottom wall of the outer barrel, wherein an annular space between the separation barrel and the outer barrel forms a first washing area, and a second washing area is formed in the separation barrel; the sealing cover comprises a first sealing cover and a second sealing cover; the first sealing cover is arranged at the top of the outer barrel in an openable and closable mode and used for sealing and covering the first washing area; the second sealing cover is arranged at an opening in an openable and closable mode and used for sealing and covering the separation barrel; a first ventilation structure is arranged on the first sealing cover, and the interior of the first washing area communicates with the exterior of the first washing area through the first ventilation structure; and/or a second ventilation structure is arranged on the second sealing cover, and the interior of the second washing area communicates with the exterior of the second washing area through the second ventilation structure. The sealing cover can balance air pressure inside and outside a washing barrel, the drainage is efficient, and meanwhile the explosion risk caused by too high air pressure inside the washing barrel is prevented.

The invention discloses a gas compressor with variable camber guide vanes. The gas compressor is composed of a machine body assembly, a supercharging device and a servo motor. The supercharging deviceis installed between a gas inlet and a main gas chamber of the machine body assembly, gas supercharging is achieved, the supercharging process is stable, energy consumption is low, and high supercharging is achieved according to practical requirements. The servo motor is installed on the outer wall side of a shell. The variable camber guide vanes adopted in the gas compressor are simple in structure and are each composed of a fixed vane and a hinged vane, wherein the hinged position of the fixed vane and the hinged vane is located in the middle of the whole vane, the camber can be adjusted, and vane surface cambers of the two variable camber guide vanes are installed opposite to impeller bins. The inherent frequency of the vanes is changed, and the bending torsional stress of the roots ofthe vanes is reduced. Impellers adopted in the gas compressor are large in gas suction amount, low in noise, high in working efficiency and long in service life, flow equalizing processing for gas suction and gas exhaust is achieved, balance of gas pressure in the shell is ensured, and the surge phenomenon is avoided.

The invention provides an infrared temperature measurement sensing chip, and belongs to the technical field of temperature measurement sensing chips. The infrared temperature measurement sensing chip comprises a glass wafer provided with a groove and a thermopile microstructure film which is bonded by a silicon-glass wafer and covers the groove. An electrode through hole located in the glass wafer is formed around the groove, and metal is filled in the electrode through hole to serve as a wire; the thermopile microstructure film comprises an infrared absorption layer bonded to the upper surface of a supporting layer and a thermopile module bonded to the lower surface of the supporting layer, the thermopile module covers the upper portion of the groove to form a closed cavity in a vacuum state, the input end or the output end of the thermopile module is connected with one end of the electrode through hole, and the other end of the electrode through hole is connected with an external electrode. According to the infrared temperature measurement sensing chip provided by the invention, heat loss caused by gas heat convection in a normal temperature environment is avoided, and the sensitivity of temperature measurement is improved.