30results about How to "Flexible seal" patented technology

An atmospheric glow-discharge plasma reactor with rotary spiral electrode for preparing C2 hydrocarbon from methane features that its rotary spiral electrode is made up by fixing the spiral metallic band with toothed edge to a cylindrical metal column, and the electrically insulated top end of said electrode is linked to sealing unit. Its advantages are high uniformity of plasma distribution and high reaction efficiency.

The application relates to pre-deformed aircraft spoilers and droop panels designed to seal with flap in deflected state, and relates to a methodology for designing spoilers or droop panels (113) andan aerodynamic systems including the designed spoilers or the designed droop panels 5. In one embodiment, the spoilers and the droop panels (113) can be deployed on a wing (100) with a flap system which provides for trailing edge variable camber (TEVC) system. During flight, the fixed portions of the wing (25, 100), the flaps, the spoilers and droop panels (113) can all deform. The spoilers or thedroop panels (113) 10 can each be pre-deformed to a first shape (152) on the ground such that in flight the spoilers or the droop panels (113) deform to a second shape (150) under aerodynamic loads.In the second shape (150), the spoilers or the droop panels (113) are configured to seal better against the flaps. The spoilers or the droop panels can be configured to seal to the flaps during all of15 the positions the flaps take as part of the TEVC system.

The invention relates to a liquid level seal connector and an underwater connection signal transmission and air guide method thereof. The connector comprises a cable. One end of the cable is sleeved by a casing cap. The front end of the casing cap can be sleeved in a sensor casing body of a transmitter sensing part. A first sealing device is arranged at the joint of the casing cap and the sensor casing body. A second sealing device which is used for sealing the cable and the casing cap is arranged on the tail end of the casing cap. A plug of a connector is arranged in the casing cap. The plug is connected with the cable. The socket of the inserter is arranged in the sensor casing body and is connected with a transmitter signal line, so as to form an integral connector structure. According to the invention, the casing cap is sleeved in the sensor casing body; the transmitter sensing part, the cable and a power supply can be flexibly separated, which is convenient for replacement and maintenance; through first and second sealing devices, the casing cap and the sensor casing body are sealed to form a cavity; the cable, the plug and the socket are arranged in the cavity and are effectively isolated from an external medium; and the liquid level seal connector has the advantages of good sealing effect, high protection degree and great reliability.

An expanding seal for preventing water and air intrusion in gaps formed between aperture-engaged components of a wall which are surrounded by stucco or the like is provided. The device is configured to prevent moisture ingress between formed gaps created as stucco surfaces expand and contract over time which can exacerbate gaps. A first side of the body of the device engages the fixture while the opposing side is adapted for an embedded engagement with cured stucco whereby intrusion into gaps is prevented by elastic expansion and contraction of the seal.

The invention discloses a wind power air compressor system. The wind power air compressor system comprises a stand column with a gas transmission channel, a wind power mechanism, an air compressor sub-system and a load-free centrifugal start control mechanism, wherein the wind power mechanism comprises fan blades, a main shaft, a driving pulley, a rotating chassis and a tail wing; the air compressor sub-system comprises an air compressor, a driven pulley arranged on a power shaft of the air compressor, a normal close button valve and a rotating joint; the rotating joint comprises a static joint, a moving joint and a hold-down mechanism; the lower end of the moving joint is inserted into the static joint, and the contacting surface of the moving joint and the static joint is a cone surface; the hold-down mechanism comprises a shield, an annular shield base, an adjustable bolt, a pressure spring and an upper spring base, the moving joint is communicated with an air channel of the static joint, and the load-free centrifugal start control mechanism comprises a centrifugal shaft, a pair of driving centrifugal rods, a centrifugal ball, a pair of driven centrifugal rods, a shaft sleeve and a button valve control mechanism. The wind power air compressor system provided by the invention has the advantages that the load-free starting is adopted, the utilization rate of wind energy is high, and the rotation is flexible.

The invention discloses a double-gate-plate wedge gate valve. The double-gate-plate wedge gate valve comprises a valve body, a flow channel, a closing part, a driving part, a bypass assembly and a valve deck. The flow channel is formed in the valve body, the closing part is used for controlling opening and closing of the flow channel, the driving part is used for providing driving power for action of the closing part, the valve deck is arranged at the right end of the valve body, the bypass assembly is arranged outside the valve deck, connected with the valve deck and used for controlling an external gas source to input low-pressure inert gas into the valve deck, and the valve deck is further linked with the driving part to control closing of the flow channel in the valve body. The double-gate-plate wedge gate valve is provided with a double-gate-plate structure, and bidirectional forced sealing can be achieved; when the valve is opened and closed, only the friction force at the inclined surface of a wedge block needs to be overcome, and gate plates can flexibly move after the wedge block moves; and when the valve is closed, the external gas source is controlled through valve rod limiting to input the low-pressure inert gas to assist in sealing, and when the valve is opened, input of the external gas source is controlled through valve rod limiting to be cut off.

The invention belongs to the technical field of fertilizer preparation, and discloses a preparation method of a compound microbial organic fertilizer of trace elements and actinomycetes in slow release, which comprises the following steps: selecting an ingredient through a batching module, mixing a bran, livestock dung and a selenium through a hydrolysis module, hydrolyzing to obtain a hydrolysismixture; inoculating actinomycetes in the hydrolysis mixture through a fermentation module, adjusting the pH, and fermenting. The preparation method of a compound microbial organic fertilizer of traceelements and actinomycetes in slow release uses sodium alginate as a coating agent to prepare a slow-release biological organic fertilizer; improves the disease resistance of the crops and the characteristics of promoting the growth of the plants (the disease resistance of a certain gram-positive bacteria can be targeted) by using actinomycetes to release the containing sugar-peptide ingredient,sugar-the lipid component ; meanwhile, provides the nutrition needed for plant growth, promotes the growth of the plants, improves the utilization rate of the chemical fertilizer, reduces the occurrence of diseases and insect pests, enhances the stress resistance of the crops, improves the quality and the yield of the crops, has an important effect, can be popularized and used in the agriculturalproduction.

The invention relates to an anti-blocking intelligent hydraulic hoist with a quantitative control function. The anti-blockage intelligent hydraulic hoist comprises an oil tank, an oil injection pipe,an oil pumping pipe, a hydraulic pump, a hydraulic cylinder, a piston, a supporting block and a controller; the side, away from the supporting block, of the oil injection pipe is provided with a cleaning mechanism, and the side, away from the supporting block, of the oil pumping pipe is provided with a cleaning mechanism; a quantitative mechanism is arranged in the oil tank, wherein the quantitative mechanism comprises a floating block, a connecting assembly, a sliding rod, a balancing block, a sealing assembly and four fixing rods; and each cleaning mechanism comprises a cleaning pipe, a driving chamber, a supporting frame and a sealing assembly, and each cleaning pipe is provided with a frame and a sponge block. According to the anti-blocking intelligent hydraulic hoist with the quantitative control function, dust impurities adsorbed on a filter screen can be adsorbed in time through the cleaning mechanisms, so that net holes of the filter screen are prevented from being blocked, andthe smooth circulation of hydraulic oil is guaranteed; and moreover, in the oil tank, the quantitative mechanism can automatically realize sealing of the oil injection pipe according to the oil level, the quantitative hydraulic oil is conveniently added into the oil tank, and the practicability of equipment is improved.

The invention provides a novel rotating shaft sealing device which comprises a lip-shaped seal, an elastic force compensation O-shaped ring and an adaptive ring which are sleeved in a bearing cover cavity, the lip-shaped seal is composed of a lip part, a supporting part, an outer gluing part and an L-shaped exposed metal framework, a C-shaped cavity is formed, a lip tip is arranged at the contact position of the lip part and a rotating shaft, and the elastic force compensation O-shaped ring is arranged on the lip tip. A semi-circular groove is formed in the outer upper edge, an air side lip corner and an oil side lip corner are arranged on the left side and the right side of the lip tip respectively, the elastic compensation O-shaped ring is made of rubber materials and sleeved with the semi-circular groove, the adaptive ring is composed of an upper supporting section and a lower pressurizing section, the profile of the section of the adaptive ring is in an S shape, and a U-shaped deformation cavity and a semi-closed pressurizing cavity are formed. A tiny protrusion is arranged on the upper edge of the outer portion of the upper supporting section and pressed into a C-shaped cavity of the lip-shaped seal, the lower pressurizing section presses and seals the elastic compensation O-shaped ring, and the elastic compensation O-shaped ring is wide in application range, good in sealing flexibility, high in dynamic eccentricity compensation capacity, small in friction torque, good in sealing performance and long in service life.

The invention discloses a welding process for a stainless steel pipe fitting. The welding process comprises the following steps of S1, manufacturing a threaded part; S2, extruding a molded part, specifically, processing a thin-wall pipe by virtue of an extrusion molding machine to form the molded part with one closed end; S3, preheating, specifically, heating the threaded part and the molded partto 500 DEG C through a heater; S4, performing vacuum sealing, specifically, clamping the threaded part at a rotating end of a welding machine, clamping the molded part at a moving end of the welding machine, forming a sealed space by means of a housing, and vacummizing the sealed space; S5, performing friction welding, specifically, driving the threaded part by a motor to rotate at a high speed, meanwhile, enabling the molded part to gradually get close to the threaded part under the action of axial force of an oil cylinder piston, and after the threaded part makes contact with the molded partand is pressed tightly, maintaining the state for 6s; and S6, upsetting, specifically, performing braking, enabling the axial force to rapidly increase to the set upsetting pressure of 3.0-4.0MPa/mm2for upsetting, and the upsetting pressure maintaining time is 1-5 seconds. By means of cooperation of friction welding, preheating and vacuum welding, high-quality welding of the stainless steel pipefitting is achieved.

The invention discloses a fluoroplastic lining centrifugal pump which comprises a pump body. A feeding opening is formed in one side of the pump body. A discharging opening is formed in one side, awayfrom the feeding opening, of the pump body. A feeding pipe is connected between the pump body and the feeding opening. A discharging pipe is connected between the pump body and the discharging opening. A lining is arranged in the pump body. An impeller is arranged in the lining. According to the fluoroplastic lining centrifugal pump, by arranging an anti-corrosion clamping ring, in the using process, the feeding pipe is connected with the feeding opening, then the anti-corrosion clamping ring is aligned to the connecting portion of the feeding pipe and the feeding opening, a moving ring is moved to enable an anti-corrosion layer to completely cover the connecting portion, finally, a butterfly nut on the outer side of a screw is screwed down, the anti-corrosion clamping ring is fixed, after the anti-corrosion clamping ring is used for a period of time, the butterfly nut can be loosened, a new anti-corrosion clamping ring is replaced, the device can seal a gap in the connecting portionof the feeding pipe and the feeding opening flexibly, the situation that the centrifugal pump works for a long time, and as a result, high-corrosion liquid in the pump body leaks can be prevented, andthe pump body is protected against corrosion.

The invention relates to a recycling-friendly packaging laminate having an exterior sealing layer (2) with a polyethylene content of at least 80 vol.%, a substrate layer (4) with a polyethylene content of at least 60 vol.% and a thermal stability layer (6), wherein the thermal stability layer (3) is arranged on the outside, opposite the sealing layer (2) and the substrate layer (4) is arranged between the sealing layer (2) and the thermal stability layer (3), wherein the thermal stability layer (3) is made of ethylene vinyl alcohol copolymer and the thickness of the thermal stability layer (3)amounts to up to 10% of the total thickness of the packaging laminate (1), but at most 10 [mu]m.