71results about How to "Prevent blowby" patented technology

The invention belongs to continuous coating device for solar selective absorption coating in plate-type solar apparatus, in particular relates to a continuous winding magnetic control sputtering vacuum coating device. The continuous winding magnetic control sputtering vacuum coating device comprises an unwinding chamber, a winding chamber, tension controlling chambers, a pre-processing chamber and craft chambers; the unwinding chamber and the winding chamber are respectively arranged at the head and tail ends of the device and respectively connected with a tension controlling chamber; the tension controlling chamber at one end of the unwinding chamber is connected with the pre-processing chamber; at least one craft chamber is arranged between the pre-processing chamber and the tension controlling chamber at one end of the winding chamber; one end of unwinding chamber, one end of winding chamber, two ends of tension controlling chambers, two ends of pre-processing chamber, and two endsof craft chambers are provided with flange plates of the same dimension, the unwinding chamber, the winding chamber, the tension controlling chambers, the pre-processing chamber and the craft chambers are connected into an integral by the flange plates. The invention provides a special coating device for long-term continuous solar selective absorption coating, and the device has the advantages ofhigh production efficiency, stable quality and outstanding film performance.

The invention provides a beer spear, and belongs to the technical field of beer drinking equipment. The problem of poor sealing performance of an existing beer spear is solved. The beer spear comprises a valve body. A fixing seat is connected inside the valve body. The upper end of the fixing seat is sleeved with a valve seat in a sliding mode. An air inlet passage is formed between the outer wall of the valve seat and the inner wall of the valve body. A spring I which enables the valve seat to move upwards and abut against the valve body to seal the air inlet passage is arranged in the valve body. A valve element is arranged in the fixing seat in a sliding mode. A beer outlet passage is formed between the outer wall of the valve element and the inner wall of the fixing seat. A spring II is arranged in the fixing seat. The valve element abuts against the fixing seat to form sealing under the action of the spring II. The valve seat is provided with a contact portion protruding downwards, or the valve element is provided with a contact portion protruding upwards. When the valve seat moves downwards to open the air inlet passage, the valve seat enables the valve element to move downwards to open the beer outlet passage through the contact portion. The beer spear has good sealing performance.

A second-stage regulator for scuba divers, wherein the user's inhalation effort is lessened considerably by the reduction of the friction between selected components thereof. Coaxially to the regulator poppet, a flexible sleeve is sealingly connected to the poppet and the baffle, so as to avoid blow-by of gaseous mixture through the baffle opening through which there extends the tail of the poppet connected to the lever of the regulator extending in the outlet chamber thereof. The poppet head is placed in ferrule with an at least part-circular profile abutting the inner part of the intermediate chamber to allow the poppet oscillation. The lever end contacting the diaphragm, separating the outlet chamber from the outside, has a generally arched shape with a profile such that the length of the arch between two adjacent contact points measured along the lever is generally equal to the length of the segment between the same adjacent contact points measured along the diaphragm.

In an internal combustion engine includes an intake valve port that opens into a combustion chamber on one side of a plane containing the axis of a cylinder bore. An exhaust valve port opens into the combustion chamber on the other side of the plane. A spark plug has a tip end that fronts a substantially central portion of the combustion chamber. The spark plug is disposed between the intake valve and the exhaust valve. In order to restrain the blow-by of an unburned fuel-air mixture, and to suppress the bulging of the cylinder head to the intake system side, the operation axis of an intake valve is set to be substantially parallel to the axis of the cylinder bore. In addition, one side surface of a cylinder head is formed to be substantially parallel to the axis of the cylinder bore.

A reciprocating-piston uniflow engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. When released, the inlet valve head undergoes a single oscillation past the equilibrium position to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. In other embodiments, the harmonic oscillator arrangement of the inlet valve enables the uniflow engine to be reversibly operated as a uniflow compressor.

The invention relates to a method for manufacturing a bipolar level battery and the bipolar level battery. The method comprises the following steps: providing a battery core of a horizontal battery; putting the battery cell as an embedded part into an injection mold; a battery shell is formed in an injection mold through injection molding, the battery shell surrounds the battery core, the battery shell and the battery core are combined into a whole, and a circulation channel is formed between the battery core and the battery shell so that the electrolyte can circulate in the circulation channel; a top cover and a bottom cover are respectively arranged on the top surface and the bottom surface of the battery shell and are sealed, so that a sealed space is formed in the battery shell and is used for storing electrolyte; and injecting an electrolyte into the battery case. According to the horizontal battery manufactured by the method, the battery core and the battery shell can be directly, conveniently and stably fixed together, and the sealing among the battery monomers of the battery core can be conveniently and effectively realized.

An exhaust control device for a vehicle engine includes an exhaust control valve capable of changing the opening area of an exhaust passage. The exhaust control valve is disposed in exhaust passage forming means so as to be able to change a bent-internal side partial passage sectional area of the passage sectional area of an exhaust passage. Specifically the exhaust control valve is disposed at a bent portion of the exhaust passage that is closest to an exhaust valve port. With this configuration, the exhaust flow rate can be controlled satisfactorily.

It is an object of the present invention to provide a sealing mechanism that, while preventing a clearance that passes in an axial direction through an entire abutting surface without involving large resistance and that invites blow-by of a working fluid, can prevent adjacent seal segments from sticking to each other, and a method for manufacturing the sealing mechanism. A sealing device includes: an annular sealing ring that includes a plurality of seal segments annularly juxtaposed; a plurality of seal fins provided in an axial direction on an inner peripheral surface of the sealing ring; a joint surface on a circumferential end of the seal segment, the joint surface facing a joint surface on an adjacent seal segment; a groove that extends in a radial direction in the joint surface; and a protrusion formed by bending part of a surface that constitutes a long side of the groove toward an outside of the joint surface.

The invention provides a dry film lubricant composition. Based on a liter, the composition comprises the following components: 40 to 80 grams of graphite powder; 230 to 300 milliliters of aid, 450 to 650 milliliters of main solvent, 30 to 100 milliliters of auxiliary solvent and 50 to 150 milliliters of lubrication improver. With low requirements on curing environment, the dry film lubricant composition provided by the invention can cure after being placed at a curing temperature. The curing temperature of the composition is low, and the curing time is short. In addition, the dry film lubricant composition obtained by the invention has high heat resistance, hot water resistance, oil resistance, lubricating performance and high adhesion force and flexibility and therefore can adapt to various working environments. Without self-curing capacity, the dry film lubricant composition provided by the invention avoids blocking spraying equipment in a spraying process. Meanwhile, the dry film lubricant composition provided by the invention has long period of validity.

The invention provides a self-generating electricity air blowing mechanism for an outdoor heater. The self-generating electricity air blowing mechanism comprises a combustion barrel, a combustion headarranged inside the combustion barrel and an ignition device which is arranged inside the combustion barrel and opposite to the combustion head and further comprises an air distribution plate, a cooling barrel, an air fan, a motor and a self-generating electricity component, wherein the air distribution plate is located at the rear end of the combustion barrel; the combustion barrel is arranged inside the cooling barrel, and the gap between the combustion barrel and the cooling barrel forms a cooling air passage; the air fan is used for supplying air to the cooling air passage and the combustion barrel; the motor is in transmission connection with the air fan; and the self-generating electricity component comprises heat conduction blocks, temperature difference electricity generating pieces and heat dissipation devices, the heat conduction blocks are used for conducting heat, the temperature difference electricity generating pieces are attached to the corresponding heat conduction blocks and are in electric connection with the motor, and the heat dissipation devices are used for performing heat dissipation and cooling on one end surfaces of the temperature difference electricity generating pieces. The self-generating electricity air blowing mechanism for the outdoor heater is simple and reasonable in structure and convenient and fast to use, the outdoor heater is made to havethe self-generating electricity function, running of the motor and the air fan can be realized, thus the heat inside the combustion barrel is transferred outwards, the convection effect is realized, so that the better outdoor heating effect is obtained.

A muzzle loading bullet gas check has external recess and ridge system, and/or an internal locking ridge system. The preferred gas check has an opening or recess on its front end for receiving and frictionally engaging a rearwardly extending post of the bullet, the opening also preferably including an internal radial ridge for gripping the post and/or locking with an indent on the post. The barrel-interacting part of the gas check has one or more external recesses and adjacent radial ridges/edges protruding relative to the recesses, which serves to reduce the total surface area of the gas check contacting the bore. The recesses do not touch the bore of the firearm, resulting in less friction and easier loading, while the outer ends/surfaces of the ridges/edges do touch the bore to retain the bullet in the bore during handling and hunting and to effectively capture gasses after the firing explosion.

A muzzle loading bullet gas check has external recess and ridge system, and/or an internal locking ridge system. The preferred gas check has an opening or recess on its front end for receiving and frictionally engaging a rearwardly extending post of the bullet, the opening also preferably including an internal radial ridge for gripping the post and/or locking with an indent on the post. The barrel-interacting part of the gas check has one or more external recesses and adjacent radial ridges/edges protruding relative to the recesses, which serves to reduce the total surface area of the gas check contacting the bore. The recesses do not touch the bore of the firearm, resulting in less friction and easier loading, while the outer ends/surfaces of the ridges/edges do touch the bore to retain the bullet in the bore during handling and hunting and to effectively capture gasses after the firing explosion.

A system and method for preventing blow-by of liquefied gases is disclosed, which senses the occurrence of blow-by and shuts off the source of the liquefied gas. As one example, a system for preventing blow-by of LN2 is disclosed, which includes a temperature sensor located near an exhaust line of a heat exchanger, a shutoff valve located in an inlet line, and a controller coupled to the temperature sensor and the shutoff valve. The sensor measures the temperature of the exhaust, and provides a signal to the controller that indicates if the temperature of the exhaust approaches the temperature of LN2. If the exhaust temperature approaches the temperature of LN2, the controller sends a signal to the shutoff valve, which causes the valve to close and stops the flow of LN2 to the heat exchanger involved. The controller can also send an alarm signal to a display, which indicates to a user that the blow-by is occurring. If the exhaust temperature increases significantly above the temperature of LN2 (e.g., blow-by is no longer occurring), the controller can send a second signal to the shutoff valve, which causes the valve to open and resume the flow of LN2.

It is intended to effectively prevent blow-by with no need for large changes in typical structures of two-cycle internal combustion engines. A main scavenging passage (24) for supplying air-fuel mixture from a crankcase to a combustion chamber for scavenging purposes has a branch scavenging passage (26) that extends upward aslant toward an intake port (14). The main scavenging passage (24) communicates with a first scavenging port (20) located nearer to an exhaust port (16). The branch scavenging passage (26) communicates with a second scavenging port (22). A mean cross-sectional area of the branch scavenging passage (26) is smaller than that of the main scavenging passage (24). Cross-sectional area of a portion (24b) next to an inlet port (24a) of the main scavenging passage (24) opening to the crankcase is smaller than the sum of cross-sectional areas of the first and second scavenging ports (20, 22).

The invention discloses an automatic compensating type magnetic descaling pipe clearing device, which comprises a cylindrical shell. A main guiding shaft is arranged in the shell and provided with a thrust spring in a sleeved mode; one end of the thrust spring is connected with a top plate, and the other end of the thrust spring is connected with a bottom plate; the outer diameter of the bottom plate is larger than that of the shell; the inner side of the top plate is connected with a spring compression rope, and the tail end of the spring compression rope is connected with the bottom plate through a pull rope release; a cone body is arranged on the outer side of the top plate and sleeves the main guiding shaft; a universal ball is annularly arranged at the front end of the cone body and located at the other end of the shell; a plurality of fan-shaped sealing straight plates are arranged on the universal ball in a surrounding mode and can move in the radial direction of the main guiding shaft; and one sides of the sealing straight plates are sequentially provided with fixed guiding plates, steel brushes and leather cups. According to the automatic compensating type magnetic descaling pipe clearing device, in the traveling process of the pipe clearing device, the fan-shaped sealing straight plates automatically move outwards for compensating after being abraded, and the problemthat sealing straight plates of a pipe clearing device are not resistant to abrasion is solved.

The invention discloses a combined inserting protective sleeve of a waste heat boiler, and solves the problem of the current protective sleeve that the actual forming quality is poor and the dimensional tolerance is difficult to control because the section size of a cone section is too small so that this position easily generates the fit clearance of gas carry-over. The technical scheme comprises an outer protective pipe and an inner protective pipe sleeved in the outer protective pipe; the outer pipe wall of the inlet end of the inner protective pipe and the inner pipe wall of the inlet end of the outer protective pipe are the conical surface fit; and the rear sections of the conical surfaces of the inner protective pipe and the outer protective pipe are provided with steps correspondingly. The combined inserting protective sleeve of the waste heat boiler has the characters of simple structure, convenient maintenance, low size fit requirement of the inner and outer pipes, difficult gas carrying-over, and good sealing performance.

The invention relates to a vertical-shaft tube carbonization furnace, and belongs to the field of carbonization of carbon-containing organic matter. The carbonization furnace is particularly suitable for carbonization of agricultural straw waste, and is also suitable for carbonization of waste biomass including municipal sludge. The carbonization furnace provided by the invention has the following advantages: 1, a material is located in a pipe, so that the carbonization furnace cannot have uneven material falling and dead angles, and even if material attachment occurs, the furnace does not need to be stopped for cleaning; 2, a yield of wood vinegar can be regulated and controlled according to the market of the wood vinegar; and 3, a drying furnace and the carbonization furnace are respectively provided with one material adding machine, so that the possibility of gas blowby is avoided